1 /* Compiler driver program that can handle many languages. 2 Copyright (C) 1987-2018 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 /* This program is the user interface to the C compiler and possibly to 21 other compilers. It is used because compilation is a complicated procedure 22 which involves running several programs and passing temporary files between 23 them, forwarding the users switches to those programs selectively, 24 and deleting the temporary files at the end. 25 26 CC recognizes how to compile each input file by suffixes in the file names. 27 Once it knows which kind of compilation to perform, the procedure for 28 compilation is specified by a string called a "spec". */ 29 30 #include "config.h" 31 #include "system.h" 32 #include "coretypes.h" 33 #include "multilib.h" /* before tm.h */ 34 #include "tm.h" 35 #include "xregex.h" 36 #include "obstack.h" 37 #include "intl.h" 38 #include "prefix.h" 39 #include "gcc.h" 40 #include "diagnostic.h" 41 #include "flags.h" 42 #include "opts.h" 43 #include "params.h" 44 #include "filenames.h" 45 #include "spellcheck.h" 46 47 48 49 /* Manage the manipulation of env vars. 50 51 We poison "getenv" and "putenv", so that all enviroment-handling is 52 done through this class. Note that poisoning happens in the 53 preprocessor at the identifier level, and doesn't distinguish between 54 env.getenv (); 55 and 56 getenv (); 57 Hence we need to use "get" for the accessor method, not "getenv". */ 58 59 class env_manager 60 { 61 public: 62 void init (bool can_restore, bool debug); 63 const char *get (const char *name); 64 void xput (const char *string); 65 void restore (); 66 67 private: 68 bool m_can_restore; 69 bool m_debug; 70 struct kv 71 { 72 char *m_key; 73 char *m_value; 74 }; 75 vec<kv> m_keys; 76 77 }; 78 79 /* The singleton instance of class env_manager. */ 80 81 static env_manager env; 82 83 /* Initializer for class env_manager. 84 85 We can't do this as a constructor since we have a statically 86 allocated instance ("env" above). */ 87 88 void 89 env_manager::init (bool can_restore, bool debug) 90 { 91 m_can_restore = can_restore; 92 m_debug = debug; 93 } 94 95 /* Get the value of NAME within the environment. Essentially 96 a wrapper for ::getenv, but adding logging, and the possibility 97 of caching results. */ 98 99 const char * 100 env_manager::get (const char *name) 101 { 102 const char *result = ::getenv (name); 103 if (m_debug) 104 fprintf (stderr, "env_manager::getenv (%s) -> %s\n", name, result); 105 return result; 106 } 107 108 /* Put the given KEY=VALUE entry STRING into the environment. 109 If the env_manager was initialized with CAN_RESTORE set, then 110 also record the old value of KEY within the environment, so that it 111 can be later restored. */ 112 113 void 114 env_manager::xput (const char *string) 115 { 116 if (m_debug) 117 fprintf (stderr, "env_manager::xput (%s)\n", string); 118 if (verbose_flag) 119 fnotice (stderr, "%s\n", string); 120 121 if (m_can_restore) 122 { 123 char *equals = strchr (const_cast <char *> (string), '='); 124 gcc_assert (equals); 125 126 struct kv kv; 127 kv.m_key = xstrndup (string, equals - string); 128 const char *cur_value = ::getenv (kv.m_key); 129 if (m_debug) 130 fprintf (stderr, "saving old value: %s\n",cur_value); 131 kv.m_value = cur_value ? xstrdup (cur_value) : NULL; 132 m_keys.safe_push (kv); 133 } 134 135 ::putenv (CONST_CAST (char *, string)); 136 } 137 138 /* Undo any xputenv changes made since last restore. 139 Can only be called if the env_manager was initialized with 140 CAN_RESTORE enabled. */ 141 142 void 143 env_manager::restore () 144 { 145 unsigned int i; 146 struct kv *item; 147 148 gcc_assert (m_can_restore); 149 150 FOR_EACH_VEC_ELT_REVERSE (m_keys, i, item) 151 { 152 if (m_debug) 153 printf ("restoring saved key: %s value: %s\n", item->m_key, item->m_value); 154 if (item->m_value) 155 ::setenv (item->m_key, item->m_value, 1); 156 else 157 ::unsetenv (item->m_key); 158 free (item->m_key); 159 free (item->m_value); 160 } 161 162 m_keys.truncate (0); 163 } 164 165 /* Forbid other uses of getenv and putenv. */ 166 #if (GCC_VERSION >= 3000) 167 #pragma GCC poison getenv putenv 168 #endif 169 170 171 172 /* By default there is no special suffix for target executables. */ 173 #ifdef TARGET_EXECUTABLE_SUFFIX 174 #define HAVE_TARGET_EXECUTABLE_SUFFIX 175 #else 176 #define TARGET_EXECUTABLE_SUFFIX "" 177 #endif 178 179 /* By default there is no special suffix for host executables. */ 180 #ifdef HOST_EXECUTABLE_SUFFIX 181 #define HAVE_HOST_EXECUTABLE_SUFFIX 182 #else 183 #define HOST_EXECUTABLE_SUFFIX "" 184 #endif 185 186 /* By default, the suffix for target object files is ".o". */ 187 #ifdef TARGET_OBJECT_SUFFIX 188 #define HAVE_TARGET_OBJECT_SUFFIX 189 #else 190 #define TARGET_OBJECT_SUFFIX ".o" 191 #endif 192 193 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; 194 195 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ 196 #ifndef LIBRARY_PATH_ENV 197 #define LIBRARY_PATH_ENV "LIBRARY_PATH" 198 #endif 199 200 /* If a stage of compilation returns an exit status >= 1, 201 compilation of that file ceases. */ 202 203 #define MIN_FATAL_STATUS 1 204 205 /* Flag set by cppspec.c to 1. */ 206 int is_cpp_driver; 207 208 /* Flag set to nonzero if an @file argument has been supplied to gcc. */ 209 static bool at_file_supplied; 210 211 /* Definition of string containing the arguments given to configure. */ 212 #include "configargs.h" 213 214 /* Flag saying to print the command line options understood by gcc and its 215 sub-processes. */ 216 217 static int print_help_list; 218 219 /* Flag saying to print the version of gcc and its sub-processes. */ 220 221 static int print_version; 222 223 /* Flag indicating whether we should ONLY print the command and 224 arguments (like verbose_flag) without executing the command. 225 Displayed arguments are quoted so that the generated command 226 line is suitable for execution. This is intended for use in 227 shell scripts to capture the driver-generated command line. */ 228 static int verbose_only_flag; 229 230 /* Flag indicating how to print command line options of sub-processes. */ 231 232 static int print_subprocess_help; 233 234 /* Linker suffix passed to -fuse-ld=... */ 235 static const char *use_ld; 236 237 /* Whether we should report subprocess execution times to a file. */ 238 239 FILE *report_times_to_file = NULL; 240 241 /* Nonzero means place this string before uses of /, so that include 242 and library files can be found in an alternate location. */ 243 244 #ifdef TARGET_SYSTEM_ROOT 245 #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT) 246 #else 247 #define DEFAULT_TARGET_SYSTEM_ROOT (0) 248 #endif 249 static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT; 250 251 /* Nonzero means pass the updated target_system_root to the compiler. */ 252 253 static int target_system_root_changed; 254 255 /* Nonzero means append this string to target_system_root. */ 256 257 static const char *target_sysroot_suffix = 0; 258 259 /* Nonzero means append this string to target_system_root for headers. */ 260 261 static const char *target_sysroot_hdrs_suffix = 0; 262 263 /* Nonzero means write "temp" files in source directory 264 and use the source file's name in them, and don't delete them. */ 265 266 static enum save_temps { 267 SAVE_TEMPS_NONE, /* no -save-temps */ 268 SAVE_TEMPS_CWD, /* -save-temps in current directory */ 269 SAVE_TEMPS_OBJ /* -save-temps in object directory */ 270 } save_temps_flag; 271 272 /* Output file to use to get the object directory for -save-temps=obj */ 273 static char *save_temps_prefix = 0; 274 static size_t save_temps_length = 0; 275 276 /* The compiler version. */ 277 278 static const char *compiler_version; 279 280 /* The target version. */ 281 282 static const char *const spec_version = DEFAULT_TARGET_VERSION; 283 284 /* The target machine. */ 285 286 static const char *spec_machine = DEFAULT_TARGET_MACHINE; 287 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE; 288 289 /* List of offload targets. Separated by colon. Empty string for 290 -foffload=disable. */ 291 292 static char *offload_targets = NULL; 293 294 /* Nonzero if cross-compiling. 295 When -b is used, the value comes from the `specs' file. */ 296 297 #ifdef CROSS_DIRECTORY_STRUCTURE 298 static const char *cross_compile = "1"; 299 #else 300 static const char *cross_compile = "0"; 301 #endif 302 303 /* Greatest exit code of sub-processes that has been encountered up to 304 now. */ 305 static int greatest_status = 1; 306 307 /* This is the obstack which we use to allocate many strings. */ 308 309 static struct obstack obstack; 310 311 /* This is the obstack to build an environment variable to pass to 312 collect2 that describes all of the relevant switches of what to 313 pass the compiler in building the list of pointers to constructors 314 and destructors. */ 315 316 static struct obstack collect_obstack; 317 318 /* Forward declaration for prototypes. */ 319 struct path_prefix; 320 struct prefix_list; 321 322 static void init_spec (void); 323 static void store_arg (const char *, int, int); 324 static void insert_wrapper (const char *); 325 static char *load_specs (const char *); 326 static void read_specs (const char *, bool, bool); 327 static void set_spec (const char *, const char *, bool); 328 static struct compiler *lookup_compiler (const char *, size_t, const char *); 329 static char *build_search_list (const struct path_prefix *, const char *, 330 bool, bool); 331 static void xputenv (const char *); 332 static void putenv_from_prefixes (const struct path_prefix *, const char *, 333 bool); 334 static int access_check (const char *, int); 335 static char *find_a_file (const struct path_prefix *, const char *, int, bool); 336 static void add_prefix (struct path_prefix *, const char *, const char *, 337 int, int, int); 338 static void add_sysrooted_prefix (struct path_prefix *, const char *, 339 const char *, int, int, int); 340 static char *skip_whitespace (char *); 341 static void delete_if_ordinary (const char *); 342 static void delete_temp_files (void); 343 static void delete_failure_queue (void); 344 static void clear_failure_queue (void); 345 static int check_live_switch (int, int); 346 static const char *handle_braces (const char *); 347 static inline bool input_suffix_matches (const char *, const char *); 348 static inline bool switch_matches (const char *, const char *, int); 349 static inline void mark_matching_switches (const char *, const char *, int); 350 static inline void process_marked_switches (void); 351 static const char *process_brace_body (const char *, const char *, const char *, int, int); 352 static const struct spec_function *lookup_spec_function (const char *); 353 static const char *eval_spec_function (const char *, const char *); 354 static const char *handle_spec_function (const char *, bool *); 355 static char *save_string (const char *, int); 356 static void set_collect_gcc_options (void); 357 static int do_spec_1 (const char *, int, const char *); 358 static int do_spec_2 (const char *); 359 static void do_option_spec (const char *, const char *); 360 static void do_self_spec (const char *); 361 static const char *find_file (const char *); 362 static int is_directory (const char *, bool); 363 static const char *validate_switches (const char *, bool); 364 static void validate_all_switches (void); 365 static inline void validate_switches_from_spec (const char *, bool); 366 static void give_switch (int, int); 367 static int default_arg (const char *, int); 368 static void set_multilib_dir (void); 369 static void print_multilib_info (void); 370 static void perror_with_name (const char *); 371 static void display_help (void); 372 static void add_preprocessor_option (const char *, int); 373 static void add_assembler_option (const char *, int); 374 static void add_linker_option (const char *, int); 375 static void process_command (unsigned int, struct cl_decoded_option *); 376 static int execute (void); 377 static void alloc_args (void); 378 static void clear_args (void); 379 static void fatal_signal (int); 380 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 381 static void init_gcc_specs (struct obstack *, const char *, const char *, 382 const char *); 383 #endif 384 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 385 static const char *convert_filename (const char *, int, int); 386 #endif 387 388 static void try_generate_repro (const char **argv); 389 static const char *getenv_spec_function (int, const char **); 390 static const char *if_exists_spec_function (int, const char **); 391 static const char *if_exists_else_spec_function (int, const char **); 392 static const char *sanitize_spec_function (int, const char **); 393 static const char *replace_outfile_spec_function (int, const char **); 394 static const char *remove_outfile_spec_function (int, const char **); 395 static const char *version_compare_spec_function (int, const char **); 396 static const char *include_spec_function (int, const char **); 397 static const char *find_file_spec_function (int, const char **); 398 static const char *find_plugindir_spec_function (int, const char **); 399 static const char *print_asm_header_spec_function (int, const char **); 400 static const char *compare_debug_dump_opt_spec_function (int, const char **); 401 static const char *compare_debug_self_opt_spec_function (int, const char **); 402 static const char *compare_debug_auxbase_opt_spec_function (int, const char **); 403 static const char *pass_through_libs_spec_func (int, const char **); 404 static const char *replace_extension_spec_func (int, const char **); 405 static const char *greater_than_spec_func (int, const char **); 406 static const char *debug_level_greater_than_spec_func (int, const char **); 407 static char *convert_white_space (char *); 408 409 /* The Specs Language 410 411 Specs are strings containing lines, each of which (if not blank) 412 is made up of a program name, and arguments separated by spaces. 413 The program name must be exact and start from root, since no path 414 is searched and it is unreliable to depend on the current working directory. 415 Redirection of input or output is not supported; the subprograms must 416 accept filenames saying what files to read and write. 417 418 In addition, the specs can contain %-sequences to substitute variable text 419 or for conditional text. Here is a table of all defined %-sequences. 420 Note that spaces are not generated automatically around the results of 421 expanding these sequences; therefore, you can concatenate them together 422 or with constant text in a single argument. 423 424 %% substitute one % into the program name or argument. 425 %i substitute the name of the input file being processed. 426 %b substitute the basename of the input file being processed. 427 This is the substring up to (and not including) the last period 428 and not including the directory unless -save-temps was specified 429 to put temporaries in a different location. 430 %B same as %b, but include the file suffix (text after the last period). 431 %gSUFFIX 432 substitute a file name that has suffix SUFFIX and is chosen 433 once per compilation, and mark the argument a la %d. To reduce 434 exposure to denial-of-service attacks, the file name is now 435 chosen in a way that is hard to predict even when previously 436 chosen file names are known. For example, `%g.s ... %g.o ... %g.s' 437 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches 438 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it 439 had been pre-processed. Previously, %g was simply substituted 440 with a file name chosen once per compilation, without regard 441 to any appended suffix (which was therefore treated just like 442 ordinary text), making such attacks more likely to succeed. 443 %|SUFFIX 444 like %g, but if -pipe is in effect, expands simply to "-". 445 %mSUFFIX 446 like %g, but if -pipe is in effect, expands to nothing. (We have both 447 %| and %m to accommodate differences between system assemblers; see 448 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) 449 %uSUFFIX 450 like %g, but generates a new temporary file name even if %uSUFFIX 451 was already seen. 452 %USUFFIX 453 substitutes the last file name generated with %uSUFFIX, generating a 454 new one if there is no such last file name. In the absence of any 455 %uSUFFIX, this is just like %gSUFFIX, except they don't share 456 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' 457 would involve the generation of two distinct file names, one 458 for each `%g.s' and another for each `%U.s'. Previously, %U was 459 simply substituted with a file name chosen for the previous %u, 460 without regard to any appended suffix. 461 %jSUFFIX 462 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is 463 writable, and if save-temps is off; otherwise, substitute the name 464 of a temporary file, just like %u. This temporary file is not 465 meant for communication between processes, but rather as a junk 466 disposal mechanism. 467 %.SUFFIX 468 substitutes .SUFFIX for the suffixes of a matched switch's args when 469 it is subsequently output with %*. SUFFIX is terminated by the next 470 space or %. 471 %d marks the argument containing or following the %d as a 472 temporary file name, so that file will be deleted if GCC exits 473 successfully. Unlike %g, this contributes no text to the argument. 474 %w marks the argument containing or following the %w as the 475 "output file" of this compilation. This puts the argument 476 into the sequence of arguments that %o will substitute later. 477 %V indicates that this compilation produces no "output file". 478 %W{...} 479 like %{...} but mark last argument supplied within 480 as a file to be deleted on failure. 481 %o substitutes the names of all the output files, with spaces 482 automatically placed around them. You should write spaces 483 around the %o as well or the results are undefined. 484 %o is for use in the specs for running the linker. 485 Input files whose names have no recognized suffix are not compiled 486 at all, but they are included among the output files, so they will 487 be linked. 488 %O substitutes the suffix for object files. Note that this is 489 handled specially when it immediately follows %g, %u, or %U 490 (with or without a suffix argument) because of the need for 491 those to form complete file names. The handling is such that 492 %O is treated exactly as if it had already been substituted, 493 except that %g, %u, and %U do not currently support additional 494 SUFFIX characters following %O as they would following, for 495 example, `.o'. 496 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot 497 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH 498 and -B options) and -imultilib as necessary. 499 %s current argument is the name of a library or startup file of some sort. 500 Search for that file in a standard list of directories 501 and substitute the full name found. 502 %eSTR Print STR as an error message. STR is terminated by a newline. 503 Use this when inconsistent options are detected. 504 %nSTR Print STR as a notice. STR is terminated by a newline. 505 %x{OPTION} Accumulate an option for %X. 506 %X Output the accumulated linker options specified by compilations. 507 %Y Output the accumulated assembler options specified by compilations. 508 %Z Output the accumulated preprocessor options specified by compilations. 509 %a process ASM_SPEC as a spec. 510 This allows config.h to specify part of the spec for running as. 511 %A process ASM_FINAL_SPEC as a spec. A capital A is actually 512 used here. This can be used to run a post-processor after the 513 assembler has done its job. 514 %D Dump out a -L option for each directory in startfile_prefixes. 515 If multilib_dir is set, extra entries are generated with it affixed. 516 %l process LINK_SPEC as a spec. 517 %L process LIB_SPEC as a spec. 518 %M Output multilib_os_dir. 519 %G process LIBGCC_SPEC as a spec. 520 %R Output the concatenation of target_system_root and 521 target_sysroot_suffix. 522 %S process STARTFILE_SPEC as a spec. A capital S is actually used here. 523 %E process ENDFILE_SPEC as a spec. A capital E is actually used here. 524 %C process CPP_SPEC as a spec. 525 %1 process CC1_SPEC as a spec. 526 %2 process CC1PLUS_SPEC as a spec. 527 %* substitute the variable part of a matched option. (See below.) 528 Note that each comma in the substituted string is replaced by 529 a single space. A space is appended after the last substition 530 unless there is more text in current sequence. 531 %<S remove all occurrences of -S from the command line. 532 Note - this command is position dependent. % commands in the 533 spec string before this one will see -S, % commands in the 534 spec string after this one will not. 535 %>S Similar to "%<S", but keep it in the GCC command line. 536 %<S* remove all occurrences of all switches beginning with -S from the 537 command line. 538 %:function(args) 539 Call the named function FUNCTION, passing it ARGS. ARGS is 540 first processed as a nested spec string, then split into an 541 argument vector in the usual fashion. The function returns 542 a string which is processed as if it had appeared literally 543 as part of the current spec. 544 %{S} substitutes the -S switch, if that switch was given to GCC. 545 If that switch was not specified, this substitutes nothing. 546 Here S is a metasyntactic variable. 547 %{S*} substitutes all the switches specified to GCC whose names start 548 with -S. This is used for -o, -I, etc; switches that take 549 arguments. GCC considers `-o foo' as being one switch whose 550 name starts with `o'. %{o*} would substitute this text, 551 including the space; thus, two arguments would be generated. 552 %{S*&T*} likewise, but preserve order of S and T options (the order 553 of S and T in the spec is not significant). Can be any number 554 of ampersand-separated variables; for each the wild card is 555 optional. Useful for CPP as %{D*&U*&A*}. 556 557 %{S:X} substitutes X, if the -S switch was given to GCC. 558 %{!S:X} substitutes X, if the -S switch was NOT given to GCC. 559 %{S*:X} substitutes X if one or more switches whose names start 560 with -S was given to GCC. Normally X is substituted only 561 once, no matter how many such switches appeared. However, 562 if %* appears somewhere in X, then X will be substituted 563 once for each matching switch, with the %* replaced by the 564 part of that switch that matched the '*'. A space will be 565 appended after the last substition unless there is more 566 text in current sequence. 567 %{.S:X} substitutes X, if processing a file with suffix S. 568 %{!.S:X} substitutes X, if NOT processing a file with suffix S. 569 %{,S:X} substitutes X, if processing a file which will use spec S. 570 %{!,S:X} substitutes X, if NOT processing a file which will use spec S. 571 572 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be 573 combined with '!', '.', ',', and '*' as above binding stronger 574 than the OR. 575 If %* appears in X, all of the alternatives must be starred, and 576 only the first matching alternative is substituted. 577 %{%:function(args):X} 578 Call function named FUNCTION with args ARGS. If the function 579 returns non-NULL, then X is substituted, if it returns 580 NULL, it isn't substituted. 581 %{S:X; if S was given to GCC, substitutes X; 582 T:Y; else if T was given to GCC, substitutes Y; 583 :D} else substitutes D. There can be as many clauses as you need. 584 This may be combined with '.', '!', ',', '|', and '*' as above. 585 586 %(Spec) processes a specification defined in a specs file as *Spec: 587 588 The switch matching text S in a %{S}, %{S:X}, or similar construct can use 589 a backslash to ignore the special meaning of the character following it, 590 thus allowing literal matching of a character that is otherwise specially 591 treated. For example, %{std=iso9899\:1999:X} substitutes X if the 592 -std=iso9899:1999 option is given. 593 594 The conditional text X in a %{S:X} or similar construct may contain 595 other nested % constructs or spaces, or even newlines. They are 596 processed as usual, as described above. Trailing white space in X is 597 ignored. White space may also appear anywhere on the left side of the 598 colon in these constructs, except between . or * and the corresponding 599 word. 600 601 The -O, -f, -g, -m, and -W switches are handled specifically in these 602 constructs. If another value of -O or the negated form of a -f, -m, or 603 -W switch is found later in the command line, the earlier switch 604 value is ignored, except with {S*} where S is just one letter; this 605 passes all matching options. 606 607 The character | at the beginning of the predicate text is used to indicate 608 that a command should be piped to the following command, but only if -pipe 609 is specified. 610 611 Note that it is built into GCC which switches take arguments and which 612 do not. You might think it would be useful to generalize this to 613 allow each compiler's spec to say which switches take arguments. But 614 this cannot be done in a consistent fashion. GCC cannot even decide 615 which input files have been specified without knowing which switches 616 take arguments, and it must know which input files to compile in order 617 to tell which compilers to run. 618 619 GCC also knows implicitly that arguments starting in `-l' are to be 620 treated as compiler output files, and passed to the linker in their 621 proper position among the other output files. */ 622 623 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ 624 625 /* config.h can define ASM_SPEC to provide extra args to the assembler 626 or extra switch-translations. */ 627 #ifndef ASM_SPEC 628 #define ASM_SPEC "" 629 #endif 630 631 /* config.h can define ASM_FINAL_SPEC to run a post processor after 632 the assembler has run. */ 633 #ifndef ASM_FINAL_SPEC 634 #define ASM_FINAL_SPEC \ 635 "%{gsplit-dwarf: \n\ 636 objcopy --extract-dwo \ 637 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ 638 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\ 639 objcopy --strip-dwo \ 640 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ 641 }" 642 #endif 643 644 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor 645 or extra switch-translations. */ 646 #ifndef CPP_SPEC 647 #define CPP_SPEC "" 648 #endif 649 650 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus 651 or extra switch-translations. */ 652 #ifndef CC1_SPEC 653 #define CC1_SPEC "" 654 #endif 655 656 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus 657 or extra switch-translations. */ 658 #ifndef CC1PLUS_SPEC 659 #define CC1PLUS_SPEC "" 660 #endif 661 662 /* config.h can define LINK_SPEC to provide extra args to the linker 663 or extra switch-translations. */ 664 #ifndef LINK_SPEC 665 #define LINK_SPEC "" 666 #endif 667 668 /* config.h can define LIB_SPEC to override the default libraries. */ 669 #ifndef LIB_SPEC 670 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" 671 #endif 672 673 /* When using -fsplit-stack we need to wrap pthread_create, in order 674 to initialize the stack guard. We always use wrapping, rather than 675 shared library ordering, and we keep the wrapper function in 676 libgcc. This is not yet a real spec, though it could become one; 677 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping 678 only works with GNU ld and gold. */ 679 #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK 680 #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}" 681 #else 682 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" 683 #endif 684 685 #ifndef LIBASAN_SPEC 686 #define STATIC_LIBASAN_LIBS \ 687 " %{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}" 688 #ifdef LIBASAN_EARLY_SPEC 689 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS 690 #elif defined(HAVE_LD_STATIC_DYNAMIC) 691 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \ 692 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \ 693 STATIC_LIBASAN_LIBS 694 #else 695 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS 696 #endif 697 #endif 698 699 #ifndef LIBASAN_EARLY_SPEC 700 #define LIBASAN_EARLY_SPEC "" 701 #endif 702 703 #ifndef LIBTSAN_SPEC 704 #define STATIC_LIBTSAN_LIBS \ 705 " %{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}" 706 #ifdef LIBTSAN_EARLY_SPEC 707 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS 708 #elif defined(HAVE_LD_STATIC_DYNAMIC) 709 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \ 710 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \ 711 STATIC_LIBTSAN_LIBS 712 #else 713 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS 714 #endif 715 #endif 716 717 #ifndef LIBTSAN_EARLY_SPEC 718 #define LIBTSAN_EARLY_SPEC "" 719 #endif 720 721 #ifndef LIBLSAN_SPEC 722 #define STATIC_LIBLSAN_LIBS \ 723 " %{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}" 724 #ifdef LIBLSAN_EARLY_SPEC 725 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS 726 #elif defined(HAVE_LD_STATIC_DYNAMIC) 727 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \ 728 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \ 729 STATIC_LIBLSAN_LIBS 730 #else 731 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS 732 #endif 733 #endif 734 735 #ifndef LIBLSAN_EARLY_SPEC 736 #define LIBLSAN_EARLY_SPEC "" 737 #endif 738 739 #ifndef LIBUBSAN_SPEC 740 #define STATIC_LIBUBSAN_LIBS \ 741 " %{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}" 742 #ifdef HAVE_LD_STATIC_DYNAMIC 743 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \ 744 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \ 745 STATIC_LIBUBSAN_LIBS 746 #else 747 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS 748 #endif 749 #endif 750 751 /* Linker options for compressed debug sections. */ 752 #if HAVE_LD_COMPRESS_DEBUG == 0 753 /* No linker support. */ 754 #define LINK_COMPRESS_DEBUG_SPEC \ 755 " %{gz*:%e-gz is not supported in this configuration} " 756 #elif HAVE_LD_COMPRESS_DEBUG == 1 757 /* GNU style on input, GNU ld options. Reject, not useful. */ 758 #define LINK_COMPRESS_DEBUG_SPEC \ 759 " %{gz*:%e-gz is not supported in this configuration} " 760 #elif HAVE_LD_COMPRESS_DEBUG == 2 761 /* GNU style, GNU gold options. */ 762 #define LINK_COMPRESS_DEBUG_SPEC \ 763 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ 764 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ 765 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} " 766 #elif HAVE_LD_COMPRESS_DEBUG == 3 767 /* ELF gABI style. */ 768 #define LINK_COMPRESS_DEBUG_SPEC \ 769 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ 770 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ 771 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} " 772 #else 773 #error Unknown value for HAVE_LD_COMPRESS_DEBUG. 774 #endif 775 776 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is 777 included. */ 778 #ifndef LIBGCC_SPEC 779 #if defined(REAL_LIBGCC_SPEC) 780 #define LIBGCC_SPEC REAL_LIBGCC_SPEC 781 #elif defined(LINK_LIBGCC_SPECIAL_1) 782 /* Have gcc do the search for libgcc.a. */ 783 #define LIBGCC_SPEC "libgcc.a%s" 784 #else 785 #define LIBGCC_SPEC "-lgcc" 786 #endif 787 #endif 788 789 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */ 790 #ifndef STARTFILE_SPEC 791 #define STARTFILE_SPEC \ 792 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" 793 #endif 794 795 /* config.h can define ENDFILE_SPEC to override the default crtn files. */ 796 #ifndef ENDFILE_SPEC 797 #define ENDFILE_SPEC "" 798 #endif 799 800 #ifndef LINKER_NAME 801 #define LINKER_NAME "collect2" 802 #endif 803 804 #ifdef HAVE_AS_DEBUG_PREFIX_MAP 805 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}" 806 #else 807 #define ASM_MAP "" 808 #endif 809 810 /* Assembler options for compressed debug sections. */ 811 #if HAVE_LD_COMPRESS_DEBUG < 2 812 /* Reject if the linker cannot write compressed debug sections. */ 813 #define ASM_COMPRESS_DEBUG_SPEC \ 814 " %{gz*:%e-gz is not supported in this configuration} " 815 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */ 816 #if HAVE_AS_COMPRESS_DEBUG == 0 817 /* No assembler support. Ignore silently. */ 818 #define ASM_COMPRESS_DEBUG_SPEC \ 819 " %{gz*:} " 820 #elif HAVE_AS_COMPRESS_DEBUG == 1 821 /* GNU style, GNU as options. */ 822 #define ASM_COMPRESS_DEBUG_SPEC \ 823 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \ 824 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \ 825 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} " 826 #elif HAVE_AS_COMPRESS_DEBUG == 2 827 /* ELF gABI style. */ 828 #define ASM_COMPRESS_DEBUG_SPEC \ 829 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ 830 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ 831 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} " 832 #else 833 #error Unknown value for HAVE_AS_COMPRESS_DEBUG. 834 #endif 835 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */ 836 837 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' 838 to the assembler. */ 839 #ifndef ASM_DEBUG_SPEC 840 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ 841 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 842 # define ASM_DEBUG_SPEC \ 843 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ 844 ? "%{%:debug-level-gt(0):" \ 845 "%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \ 846 : "%{%:debug-level-gt(0):" \ 847 "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP) 848 # else 849 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 850 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gstabs}}" ASM_MAP 851 # endif 852 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) 853 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gdwarf2}}" ASM_MAP 854 # endif 855 # endif 856 #endif 857 #ifndef ASM_DEBUG_SPEC 858 # define ASM_DEBUG_SPEC "" 859 #endif 860 861 /* Here is the spec for running the linker, after compiling all files. */ 862 863 /* This is overridable by the target in case they need to specify the 864 -lgcc and -lc order specially, yet not require them to override all 865 of LINK_COMMAND_SPEC. */ 866 #ifndef LINK_GCC_C_SEQUENCE_SPEC 867 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" 868 #endif 869 870 #ifndef LINK_SSP_SPEC 871 #ifdef TARGET_LIBC_PROVIDES_SSP 872 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ 873 "|fstack-protector-strong|fstack-protector-explicit:}" 874 #else 875 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ 876 "|fstack-protector-strong|fstack-protector-explicit" \ 877 ":-lssp_nonshared -lssp}" 878 #endif 879 #endif 880 881 #ifdef ENABLE_DEFAULT_PIE 882 #define PIE_SPEC "!no-pie" 883 #define NO_FPIE1_SPEC "fno-pie" 884 #define FPIE1_SPEC NO_FPIE1_SPEC ":;" 885 #define NO_FPIE2_SPEC "fno-PIE" 886 #define FPIE2_SPEC NO_FPIE2_SPEC ":;" 887 #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC 888 #define FPIE_SPEC NO_FPIE_SPEC ":;" 889 #define NO_FPIC1_SPEC "fno-pic" 890 #define FPIC1_SPEC NO_FPIC1_SPEC ":;" 891 #define NO_FPIC2_SPEC "fno-PIC" 892 #define FPIC2_SPEC NO_FPIC2_SPEC ":;" 893 #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC 894 #define FPIC_SPEC NO_FPIC_SPEC ":;" 895 #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC 896 #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;" 897 #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC 898 #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;" 899 #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC 900 #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;" 901 #else 902 #define PIE_SPEC "pie" 903 #define FPIE1_SPEC "fpie" 904 #define NO_FPIE1_SPEC FPIE1_SPEC ":;" 905 #define FPIE2_SPEC "fPIE" 906 #define NO_FPIE2_SPEC FPIE2_SPEC ":;" 907 #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC 908 #define NO_FPIE_SPEC FPIE_SPEC ":;" 909 #define FPIC1_SPEC "fpic" 910 #define NO_FPIC1_SPEC FPIC1_SPEC ":;" 911 #define FPIC2_SPEC "fPIC" 912 #define NO_FPIC2_SPEC FPIC2_SPEC ":;" 913 #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC 914 #define NO_FPIC_SPEC FPIC_SPEC ":;" 915 #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC 916 #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;" 917 #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC 918 #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;" 919 #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC 920 #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;" 921 #endif 922 923 #ifndef LINK_PIE_SPEC 924 #ifdef HAVE_LD_PIE 925 #ifndef LD_PIE_SPEC 926 #define LD_PIE_SPEC "-pie" 927 #endif 928 #else 929 #define LD_PIE_SPEC "" 930 #endif 931 #define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} " 932 #endif 933 934 #ifndef LINK_BUILDID_SPEC 935 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) 936 # define LINK_BUILDID_SPEC "%{!r:--build-id} " 937 # endif 938 #endif 939 940 /* Conditional to test whether the LTO plugin is used or not. 941 FIXME: For slim LTO we will need to enable plugin unconditionally. This 942 still cause problems with PLUGIN_LD != LD and when plugin is built but 943 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable 944 plugin only when LTO is enabled. We still honor explicit 945 -fuse-linker-plugin if the linker used understands -plugin. */ 946 947 /* The linker has some plugin support. */ 948 #if HAVE_LTO_PLUGIN > 0 949 /* The linker used has full plugin support, use LTO plugin by default. */ 950 #if HAVE_LTO_PLUGIN == 2 951 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto" 952 #define PLUGIN_COND_CLOSE "}" 953 #else 954 /* The linker used has limited plugin support, use LTO plugin with explicit 955 -fuse-linker-plugin. */ 956 #define PLUGIN_COND "fuse-linker-plugin" 957 #define PLUGIN_COND_CLOSE "" 958 #endif 959 #define LINK_PLUGIN_SPEC \ 960 "%{" PLUGIN_COND": \ 961 -plugin %(linker_plugin_file) \ 962 -plugin-opt=%(lto_wrapper) \ 963 -plugin-opt=-fresolution=%u.res \ 964 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ 965 }" PLUGIN_COND_CLOSE 966 #else 967 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ 968 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ 969 %e-fuse-linker-plugin is not supported in this configuration}" 970 #endif 971 972 /* Linker command line options for -fsanitize= early on the command line. */ 973 #ifndef SANITIZER_EARLY_SPEC 974 #define SANITIZER_EARLY_SPEC "\ 975 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \ 976 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \ 977 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}" 978 #endif 979 980 /* Linker command line options for -fsanitize= late on the command line. */ 981 #ifndef SANITIZER_SPEC 982 #define SANITIZER_SPEC "\ 983 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\ 984 %{static:%ecannot specify -static with -fsanitize=address}}\ 985 %{%:sanitize(thread):" LIBTSAN_SPEC "\ 986 %{static:%ecannot specify -static with -fsanitize=thread}}\ 987 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\ 988 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}" 989 #endif 990 991 #ifndef POST_LINK_SPEC 992 #define POST_LINK_SPEC "" 993 #endif 994 995 /* This is the spec to use, once the code for creating the vtable 996 verification runtime library, libvtv.so, has been created. Currently 997 the vtable verification runtime functions are in libstdc++, so we use 998 the spec just below this one. */ 999 #ifndef VTABLE_VERIFICATION_SPEC 1000 #if ENABLE_VTABLE_VERIFY 1001 #define VTABLE_VERIFICATION_SPEC "\ 1002 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\ 1003 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}" 1004 #else 1005 #define VTABLE_VERIFICATION_SPEC "\ 1006 %{fvtable-verify=none:} \ 1007 %{fvtable-verify=std: \ 1008 %e-fvtable-verify=std is not supported in this configuration} \ 1009 %{fvtable-verify=preinit: \ 1010 %e-fvtable-verify=preinit is not supported in this configuration}" 1011 #endif 1012 #endif 1013 1014 #ifndef CHKP_SPEC 1015 #define CHKP_SPEC "" 1016 #endif 1017 1018 /* -u* was put back because both BSD and SysV seem to support it. */ 1019 /* %{static|no-pie|static-pie:} simply prevents an error message: 1020 1. If the target machine doesn't handle -static. 1021 2. If PIE isn't enabled by default. 1022 3. If the target machine doesn't handle -static-pie. 1023 */ 1024 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker 1025 scripts which exist in user specified directories, or in standard 1026 directories. */ 1027 /* We pass any -flto flags on to the linker, which is expected 1028 to understand them. In practice, this means it had better be collect2. */ 1029 /* %{e*} includes -export-dynamic; see comment in common.opt. */ 1030 #ifndef LINK_COMMAND_SPEC 1031 #define LINK_COMMAND_SPEC "\ 1032 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 1033 %(linker) " \ 1034 LINK_PLUGIN_SPEC \ 1035 "%{flto|flto=*:%<fcompare-debug*} \ 1036 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \ 1037 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \ 1038 "%X %{o*} %{e*} %{N} %{n} %{r}\ 1039 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} \ 1040 %{static|no-pie|static-pie:} %{L*} %(mfwrap) %(link_libgcc) " \ 1041 VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o " CHKP_SPEC " \ 1042 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 1043 %:include(libgomp.spec)%(link_gomp)}\ 1044 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ 1045 %(mflib) " STACK_SPLIT_SPEC "\ 1046 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \ 1047 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ 1048 %{!nostdlib:%{!nostartfiles:%E}} %{T*} \n%(post_link) }}}}}}" 1049 #endif 1050 1051 #ifndef LINK_LIBGCC_SPEC 1052 /* Generate -L options for startfile prefix list. */ 1053 # define LINK_LIBGCC_SPEC "%D" 1054 #endif 1055 1056 #ifndef STARTFILE_PREFIX_SPEC 1057 # define STARTFILE_PREFIX_SPEC "" 1058 #endif 1059 1060 #ifndef SYSROOT_SPEC 1061 # define SYSROOT_SPEC "--sysroot=%R" 1062 #endif 1063 1064 #ifndef SYSROOT_SUFFIX_SPEC 1065 # define SYSROOT_SUFFIX_SPEC "" 1066 #endif 1067 1068 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC 1069 # define SYSROOT_HEADERS_SUFFIX_SPEC "" 1070 #endif 1071 1072 static const char *asm_debug = ASM_DEBUG_SPEC; 1073 static const char *cpp_spec = CPP_SPEC; 1074 static const char *cc1_spec = CC1_SPEC; 1075 static const char *cc1plus_spec = CC1PLUS_SPEC; 1076 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; 1077 static const char *link_ssp_spec = LINK_SSP_SPEC; 1078 static const char *asm_spec = ASM_SPEC; 1079 static const char *asm_final_spec = ASM_FINAL_SPEC; 1080 static const char *link_spec = LINK_SPEC; 1081 static const char *lib_spec = LIB_SPEC; 1082 static const char *link_gomp_spec = ""; 1083 static const char *libgcc_spec = LIBGCC_SPEC; 1084 static const char *endfile_spec = ENDFILE_SPEC; 1085 static const char *startfile_spec = STARTFILE_SPEC; 1086 static const char *linker_name_spec = LINKER_NAME; 1087 static const char *linker_plugin_file_spec = ""; 1088 static const char *lto_wrapper_spec = ""; 1089 static const char *lto_gcc_spec = ""; 1090 static const char *post_link_spec = POST_LINK_SPEC; 1091 static const char *link_command_spec = LINK_COMMAND_SPEC; 1092 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; 1093 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; 1094 static const char *sysroot_spec = SYSROOT_SPEC; 1095 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; 1096 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; 1097 static const char *self_spec = ""; 1098 1099 /* Standard options to cpp, cc1, and as, to reduce duplication in specs. 1100 There should be no need to override these in target dependent files, 1101 but we need to copy them to the specs file so that newer versions 1102 of the GCC driver can correctly drive older tool chains with the 1103 appropriate -B options. */ 1104 1105 /* When cpplib handles traditional preprocessing, get rid of this, and 1106 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so 1107 that we default the front end language better. */ 1108 static const char *trad_capable_cpp = 1109 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}"; 1110 1111 /* We don't wrap .d files in %W{} since a missing .d file, and 1112 therefore no dependency entry, confuses make into thinking a .o 1113 file that happens to exist is up-to-date. */ 1114 static const char *cpp_unique_options = 1115 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ 1116 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ 1117 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ 1118 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ 1119 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ 1120 %{remap} %{g3|ggdb3|gstabs3|gxcoff3|gvms3:-dD}\ 1121 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ 1122 %{H} %C %{D*&U*&A*} %{i*} %Z %i\ 1123 %{E|M|MM:%W{o*}}"; 1124 1125 /* This contains cpp options which are common with cc1_options and are passed 1126 only when preprocessing only to avoid duplication. We pass the cc1 spec 1127 options to the preprocessor so that it the cc1 spec may manipulate 1128 options used to set target flags. Those special target flags settings may 1129 in turn cause preprocessor symbols to be defined specially. */ 1130 static const char *cpp_options = 1131 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ 1132 %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\ 1133 %{!fno-working-directory:-fworking-directory}}} %{O*}\ 1134 %{undef} %{save-temps*:-fpch-preprocess}"; 1135 1136 /* This contains cpp options which are not passed when the preprocessor 1137 output will be used by another program. */ 1138 static const char *cpp_debug_options = "%{d*}"; 1139 1140 /* NB: This is shared amongst all front-ends, except for Ada. */ 1141 static const char *cc1_options = 1142 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ 1143 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ 1144 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\ 1145 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \ 1146 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \ 1147 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ 1148 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ 1149 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ 1150 %{-target-help:--target-help}\ 1151 %{-version:--version}\ 1152 %{-help=*:--help=%*}\ 1153 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ 1154 %{fsyntax-only:-o %j} %{-param*}\ 1155 %{coverage:-fprofile-arcs -ftest-coverage}\ 1156 %{fprofile-arcs|fprofile-generate*|coverage:\ 1157 %{!fprofile-update=single:\ 1158 %{pthread:-fprofile-update=prefer-atomic}}}"; 1159 1160 static const char *asm_options = 1161 "%{-target-help:%:print-asm-header()} " 1162 #if HAVE_GNU_AS 1163 /* If GNU AS is used, then convert -w (no warnings), -I, and -v 1164 to the assembler equivalents. */ 1165 "%{v} %{w:-W} %{I*} " 1166 #endif 1167 ASM_COMPRESS_DEBUG_SPEC 1168 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; 1169 1170 static const char *invoke_as = 1171 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 1172 "%{!fwpa*:\ 1173 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ 1174 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ 1175 }"; 1176 #else 1177 "%{!fwpa*:\ 1178 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ 1179 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ 1180 }"; 1181 #endif 1182 1183 /* Some compilers have limits on line lengths, and the multilib_select 1184 and/or multilib_matches strings can be very long, so we build them at 1185 run time. */ 1186 static struct obstack multilib_obstack; 1187 static const char *multilib_select; 1188 static const char *multilib_matches; 1189 static const char *multilib_defaults; 1190 static const char *multilib_exclusions; 1191 static const char *multilib_reuse; 1192 1193 /* Check whether a particular argument is a default argument. */ 1194 1195 #ifndef MULTILIB_DEFAULTS 1196 #define MULTILIB_DEFAULTS { "" } 1197 #endif 1198 1199 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; 1200 1201 #ifndef DRIVER_SELF_SPECS 1202 #define DRIVER_SELF_SPECS "" 1203 #endif 1204 1205 /* Linking to libgomp implies pthreads. This is particularly important 1206 for targets that use different start files and suchlike. */ 1207 #ifndef GOMP_SELF_SPECS 1208 #define GOMP_SELF_SPECS \ 1209 "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \ 1210 "-pthread}" 1211 #endif 1212 1213 /* Likewise for -fgnu-tm. */ 1214 #ifndef GTM_SELF_SPECS 1215 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" 1216 #endif 1217 1218 static const char *const driver_self_specs[] = { 1219 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns", 1220 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS 1221 }; 1222 1223 #ifndef OPTION_DEFAULT_SPECS 1224 #define OPTION_DEFAULT_SPECS { "", "" } 1225 #endif 1226 1227 struct default_spec 1228 { 1229 const char *name; 1230 const char *spec; 1231 }; 1232 1233 static const struct default_spec 1234 option_default_specs[] = { OPTION_DEFAULT_SPECS }; 1235 1236 struct user_specs 1237 { 1238 struct user_specs *next; 1239 const char *filename; 1240 }; 1241 1242 static struct user_specs *user_specs_head, *user_specs_tail; 1243 1244 1245 /* Record the mapping from file suffixes for compilation specs. */ 1246 1247 struct compiler 1248 { 1249 const char *suffix; /* Use this compiler for input files 1250 whose names end in this suffix. */ 1251 1252 const char *spec; /* To use this compiler, run this spec. */ 1253 1254 const char *cpp_spec; /* If non-NULL, substitute this spec 1255 for `%C', rather than the usual 1256 cpp_spec. */ 1257 int combinable; /* If nonzero, compiler can deal with 1258 multiple source files at once (IMA). */ 1259 int needs_preprocessing; /* If nonzero, source files need to 1260 be run through a preprocessor. */ 1261 }; 1262 1263 /* Pointer to a vector of `struct compiler' that gives the spec for 1264 compiling a file, based on its suffix. 1265 A file that does not end in any of these suffixes will be passed 1266 unchanged to the loader and nothing else will be done to it. 1267 1268 An entry containing two 0s is used to terminate the vector. 1269 1270 If multiple entries match a file, the last matching one is used. */ 1271 1272 static struct compiler *compilers; 1273 1274 /* Number of entries in `compilers', not counting the null terminator. */ 1275 1276 static int n_compilers; 1277 1278 /* The default list of file name suffixes and their compilation specs. */ 1279 1280 static const struct compiler default_compilers[] = 1281 { 1282 /* Add lists of suffixes of known languages here. If those languages 1283 were not present when we built the driver, we will hit these copies 1284 and be given a more meaningful error than "file not used since 1285 linking is not done". */ 1286 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, 1287 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, 1288 {".mii", "#Objective-C++", 0, 0, 0}, 1289 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, 1290 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, 1291 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, 1292 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, 1293 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, 1294 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, 1295 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0}, 1296 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0}, 1297 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, 1298 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0}, 1299 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, 1300 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0}, 1301 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0}, 1302 {".r", "#Ratfor", 0, 0, 0}, 1303 {".go", "#Go", 0, 1, 0}, 1304 /* Next come the entries for C. */ 1305 {".c", "@c", 0, 0, 1}, 1306 {"@c", 1307 /* cc1 has an integrated ISO C preprocessor. We should invoke the 1308 external preprocessor if -save-temps is given. */ 1309 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 1310 %{!E:%{!M:%{!MM:\ 1311 %{traditional:\ 1312 %eGNU C no longer supports -traditional without -E}\ 1313 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 1314 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ 1315 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ 1316 %(cc1_options)}\ 1317 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ 1318 cc1 %(cpp_unique_options) %(cc1_options)}}}\ 1319 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1}, 1320 {"-", 1321 "%{!E:%e-E or -x required when input is from standard input}\ 1322 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, 1323 {".h", "@c-header", 0, 0, 0}, 1324 {"@c-header", 1325 /* cc1 has an integrated ISO C preprocessor. We should invoke the 1326 external preprocessor if -save-temps is given. */ 1327 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 1328 %{!E:%{!M:%{!MM:\ 1329 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 1330 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ 1331 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ 1332 %(cc1_options)\ 1333 %{!fsyntax-only:%{!S:-o %g.s} \ 1334 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\ 1335 %W{o*:--output-pch=%*}}%V}}\ 1336 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ 1337 cc1 %(cpp_unique_options) %(cc1_options)\ 1338 %{!fsyntax-only:%{!S:-o %g.s} \ 1339 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\ 1340 %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0}, 1341 {".i", "@cpp-output", 0, 0, 0}, 1342 {"@cpp-output", 1343 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0}, 1344 {".s", "@assembler", 0, 0, 0}, 1345 {"@assembler", 1346 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0}, 1347 {".sx", "@assembler-with-cpp", 0, 0, 0}, 1348 {".S", "@assembler-with-cpp", 0, 0, 0}, 1349 {"@assembler-with-cpp", 1350 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 1351 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ 1352 %{E|M|MM:%(cpp_debug_options)}\ 1353 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 1354 as %(asm_debug) %(asm_options) %|.s %A }}}}" 1355 #else 1356 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ 1357 %{E|M|MM:%(cpp_debug_options)}\ 1358 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 1359 as %(asm_debug) %(asm_options) %m.s %A }}}}" 1360 #endif 1361 , 0, 0, 0}, 1362 1363 #include "specs.h" 1364 /* Mark end of table. */ 1365 {0, 0, 0, 0, 0} 1366 }; 1367 1368 /* Number of elements in default_compilers, not counting the terminator. */ 1369 1370 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; 1371 1372 typedef char *char_p; /* For DEF_VEC_P. */ 1373 1374 /* A vector of options to give to the linker. 1375 These options are accumulated by %x, 1376 and substituted into the linker command with %X. */ 1377 static vec<char_p> linker_options; 1378 1379 /* A vector of options to give to the assembler. 1380 These options are accumulated by -Wa, 1381 and substituted into the assembler command with %Y. */ 1382 static vec<char_p> assembler_options; 1383 1384 /* A vector of options to give to the preprocessor. 1385 These options are accumulated by -Wp, 1386 and substituted into the preprocessor command with %Z. */ 1387 static vec<char_p> preprocessor_options; 1388 1389 static char * 1390 skip_whitespace (char *p) 1391 { 1392 while (1) 1393 { 1394 /* A fully-blank line is a delimiter in the SPEC file and shouldn't 1395 be considered whitespace. */ 1396 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') 1397 return p + 1; 1398 else if (*p == '\n' || *p == ' ' || *p == '\t') 1399 p++; 1400 else if (*p == '#') 1401 { 1402 while (*p != '\n') 1403 p++; 1404 p++; 1405 } 1406 else 1407 break; 1408 } 1409 1410 return p; 1411 } 1412 /* Structures to keep track of prefixes to try when looking for files. */ 1413 1414 struct prefix_list 1415 { 1416 const char *prefix; /* String to prepend to the path. */ 1417 struct prefix_list *next; /* Next in linked list. */ 1418 int require_machine_suffix; /* Don't use without machine_suffix. */ 1419 /* 2 means try both machine_suffix and just_machine_suffix. */ 1420 int priority; /* Sort key - priority within list. */ 1421 int os_multilib; /* 1 if OS multilib scheme should be used, 1422 0 for GCC multilib scheme. */ 1423 }; 1424 1425 struct path_prefix 1426 { 1427 struct prefix_list *plist; /* List of prefixes to try */ 1428 int max_len; /* Max length of a prefix in PLIST */ 1429 const char *name; /* Name of this list (used in config stuff) */ 1430 }; 1431 1432 /* List of prefixes to try when looking for executables. */ 1433 1434 static struct path_prefix exec_prefixes = { 0, 0, "exec" }; 1435 1436 /* List of prefixes to try when looking for startup (crt0) files. */ 1437 1438 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; 1439 1440 /* List of prefixes to try when looking for include files. */ 1441 1442 static struct path_prefix include_prefixes = { 0, 0, "include" }; 1443 1444 /* Suffix to attach to directories searched for commands. 1445 This looks like `MACHINE/VERSION/'. */ 1446 1447 static const char *machine_suffix = 0; 1448 1449 /* Suffix to attach to directories searched for commands. 1450 This is just `MACHINE/'. */ 1451 1452 static const char *just_machine_suffix = 0; 1453 1454 /* Adjusted value of GCC_EXEC_PREFIX envvar. */ 1455 1456 static const char *gcc_exec_prefix; 1457 1458 /* Adjusted value of standard_libexec_prefix. */ 1459 1460 static const char *gcc_libexec_prefix; 1461 1462 /* Default prefixes to attach to command names. */ 1463 1464 #ifndef STANDARD_STARTFILE_PREFIX_1 1465 #define STANDARD_STARTFILE_PREFIX_1 "/lib/" 1466 #endif 1467 #ifndef STANDARD_STARTFILE_PREFIX_2 1468 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" 1469 #endif 1470 1471 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ 1472 #undef MD_EXEC_PREFIX 1473 #undef MD_STARTFILE_PREFIX 1474 #undef MD_STARTFILE_PREFIX_1 1475 #endif 1476 1477 /* If no prefixes defined, use the null string, which will disable them. */ 1478 #ifndef MD_EXEC_PREFIX 1479 #define MD_EXEC_PREFIX "" 1480 #endif 1481 #ifndef MD_STARTFILE_PREFIX 1482 #define MD_STARTFILE_PREFIX "" 1483 #endif 1484 #ifndef MD_STARTFILE_PREFIX_1 1485 #define MD_STARTFILE_PREFIX_1 "" 1486 #endif 1487 1488 /* These directories are locations set at configure-time based on the 1489 --prefix option provided to configure. Their initializers are 1490 defined in Makefile.in. These paths are not *directly* used when 1491 gcc_exec_prefix is set because, in that case, we know where the 1492 compiler has been installed, and use paths relative to that 1493 location instead. */ 1494 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; 1495 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; 1496 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; 1497 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; 1498 1499 /* For native compilers, these are well-known paths containing 1500 components that may be provided by the system. For cross 1501 compilers, these paths are not used. */ 1502 static const char *md_exec_prefix = MD_EXEC_PREFIX; 1503 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; 1504 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; 1505 static const char *const standard_startfile_prefix_1 1506 = STANDARD_STARTFILE_PREFIX_1; 1507 static const char *const standard_startfile_prefix_2 1508 = STANDARD_STARTFILE_PREFIX_2; 1509 1510 /* A relative path to be used in finding the location of tools 1511 relative to the driver. */ 1512 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; 1513 1514 /* A prefix to be used when this is an accelerator compiler. */ 1515 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX; 1516 1517 /* Subdirectory to use for locating libraries. Set by 1518 set_multilib_dir based on the compilation options. */ 1519 1520 static const char *multilib_dir; 1521 1522 /* Subdirectory to use for locating libraries in OS conventions. Set by 1523 set_multilib_dir based on the compilation options. */ 1524 1525 static const char *multilib_os_dir; 1526 1527 /* Subdirectory to use for locating libraries in multiarch conventions. Set by 1528 set_multilib_dir based on the compilation options. */ 1529 1530 static const char *multiarch_dir; 1531 1532 /* Structure to keep track of the specs that have been defined so far. 1533 These are accessed using %(specname) in a compiler or link 1534 spec. */ 1535 1536 struct spec_list 1537 { 1538 /* The following 2 fields must be first */ 1539 /* to allow EXTRA_SPECS to be initialized */ 1540 const char *name; /* name of the spec. */ 1541 const char *ptr; /* available ptr if no static pointer */ 1542 1543 /* The following fields are not initialized */ 1544 /* by EXTRA_SPECS */ 1545 const char **ptr_spec; /* pointer to the spec itself. */ 1546 struct spec_list *next; /* Next spec in linked list. */ 1547 int name_len; /* length of the name */ 1548 bool user_p; /* whether string come from file spec. */ 1549 bool alloc_p; /* whether string was allocated */ 1550 const char *default_ptr; /* The default value of *ptr_spec. */ 1551 }; 1552 1553 #define INIT_STATIC_SPEC(NAME,PTR) \ 1554 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \ 1555 *PTR } 1556 1557 /* List of statically defined specs. */ 1558 static struct spec_list static_specs[] = 1559 { 1560 INIT_STATIC_SPEC ("asm", &asm_spec), 1561 INIT_STATIC_SPEC ("asm_debug", &asm_debug), 1562 INIT_STATIC_SPEC ("asm_final", &asm_final_spec), 1563 INIT_STATIC_SPEC ("asm_options", &asm_options), 1564 INIT_STATIC_SPEC ("invoke_as", &invoke_as), 1565 INIT_STATIC_SPEC ("cpp", &cpp_spec), 1566 INIT_STATIC_SPEC ("cpp_options", &cpp_options), 1567 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), 1568 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), 1569 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), 1570 INIT_STATIC_SPEC ("cc1", &cc1_spec), 1571 INIT_STATIC_SPEC ("cc1_options", &cc1_options), 1572 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), 1573 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), 1574 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), 1575 INIT_STATIC_SPEC ("endfile", &endfile_spec), 1576 INIT_STATIC_SPEC ("link", &link_spec), 1577 INIT_STATIC_SPEC ("lib", &lib_spec), 1578 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), 1579 INIT_STATIC_SPEC ("libgcc", &libgcc_spec), 1580 INIT_STATIC_SPEC ("startfile", &startfile_spec), 1581 INIT_STATIC_SPEC ("cross_compile", &cross_compile), 1582 INIT_STATIC_SPEC ("version", &compiler_version), 1583 INIT_STATIC_SPEC ("multilib", &multilib_select), 1584 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), 1585 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), 1586 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), 1587 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), 1588 INIT_STATIC_SPEC ("multilib_options", &multilib_options), 1589 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse), 1590 INIT_STATIC_SPEC ("linker", &linker_name_spec), 1591 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec), 1592 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec), 1593 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec), 1594 INIT_STATIC_SPEC ("post_link", &post_link_spec), 1595 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), 1596 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), 1597 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), 1598 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), 1599 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), 1600 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), 1601 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), 1602 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), 1603 INIT_STATIC_SPEC ("self_spec", &self_spec), 1604 }; 1605 1606 #ifdef EXTRA_SPECS /* additional specs needed */ 1607 /* Structure to keep track of just the first two args of a spec_list. 1608 That is all that the EXTRA_SPECS macro gives us. */ 1609 struct spec_list_1 1610 { 1611 const char *const name; 1612 const char *const ptr; 1613 }; 1614 1615 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; 1616 static struct spec_list *extra_specs = (struct spec_list *) 0; 1617 #endif 1618 1619 /* List of dynamically allocates specs that have been defined so far. */ 1620 1621 static struct spec_list *specs = (struct spec_list *) 0; 1622 1623 /* List of static spec functions. */ 1624 1625 static const struct spec_function static_spec_functions[] = 1626 { 1627 { "getenv", getenv_spec_function }, 1628 { "if-exists", if_exists_spec_function }, 1629 { "if-exists-else", if_exists_else_spec_function }, 1630 { "sanitize", sanitize_spec_function }, 1631 { "replace-outfile", replace_outfile_spec_function }, 1632 { "remove-outfile", remove_outfile_spec_function }, 1633 { "version-compare", version_compare_spec_function }, 1634 { "include", include_spec_function }, 1635 { "find-file", find_file_spec_function }, 1636 { "find-plugindir", find_plugindir_spec_function }, 1637 { "print-asm-header", print_asm_header_spec_function }, 1638 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function }, 1639 { "compare-debug-self-opt", compare_debug_self_opt_spec_function }, 1640 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function }, 1641 { "pass-through-libs", pass_through_libs_spec_func }, 1642 { "replace-extension", replace_extension_spec_func }, 1643 { "gt", greater_than_spec_func }, 1644 { "debug-level-gt", debug_level_greater_than_spec_func }, 1645 #ifdef EXTRA_SPEC_FUNCTIONS 1646 EXTRA_SPEC_FUNCTIONS 1647 #endif 1648 { 0, 0 } 1649 }; 1650 1651 static int processing_spec_function; 1652 1653 /* Add appropriate libgcc specs to OBSTACK, taking into account 1654 various permutations of -shared-libgcc, -shared, and such. */ 1655 1656 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1657 1658 #ifndef USE_LD_AS_NEEDED 1659 #define USE_LD_AS_NEEDED 0 1660 #endif 1661 1662 static void 1663 init_gcc_specs (struct obstack *obstack, const char *shared_name, 1664 const char *static_name, const char *eh_name) 1665 { 1666 char *buf; 1667 1668 #if USE_LD_AS_NEEDED 1669 buf = concat ("%{static|static-libgcc|static-pie:", static_name, " ", eh_name, "}" 1670 "%{!static:%{!static-libgcc:%{!static-pie:" 1671 "%{!shared-libgcc:", 1672 static_name, " " LD_AS_NEEDED_OPTION " ", 1673 shared_name, " " LD_NO_AS_NEEDED_OPTION 1674 "}" 1675 "%{shared-libgcc:", 1676 shared_name, "%{!shared: ", static_name, "}" 1677 "}}" 1678 #else 1679 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" 1680 "%{!static:%{!static-libgcc:" 1681 "%{!shared:" 1682 "%{!shared-libgcc:", static_name, " ", eh_name, "}" 1683 "%{shared-libgcc:", shared_name, " ", static_name, "}" 1684 "}" 1685 #ifdef LINK_EH_SPEC 1686 "%{shared:" 1687 "%{shared-libgcc:", shared_name, "}" 1688 "%{!shared-libgcc:", static_name, "}" 1689 "}" 1690 #else 1691 "%{shared:", shared_name, "}" 1692 #endif 1693 #endif 1694 "}}", NULL); 1695 1696 obstack_grow (obstack, buf, strlen (buf)); 1697 free (buf); 1698 } 1699 #endif /* ENABLE_SHARED_LIBGCC */ 1700 1701 /* Initialize the specs lookup routines. */ 1702 1703 static void 1704 init_spec (void) 1705 { 1706 struct spec_list *next = (struct spec_list *) 0; 1707 struct spec_list *sl = (struct spec_list *) 0; 1708 int i; 1709 1710 if (specs) 1711 return; /* Already initialized. */ 1712 1713 if (verbose_flag) 1714 fnotice (stderr, "Using built-in specs.\n"); 1715 1716 #ifdef EXTRA_SPECS 1717 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); 1718 1719 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) 1720 { 1721 sl = &extra_specs[i]; 1722 sl->name = extra_specs_1[i].name; 1723 sl->ptr = extra_specs_1[i].ptr; 1724 sl->next = next; 1725 sl->name_len = strlen (sl->name); 1726 sl->ptr_spec = &sl->ptr; 1727 gcc_assert (sl->ptr_spec != NULL); 1728 sl->default_ptr = sl->ptr; 1729 next = sl; 1730 } 1731 #endif 1732 1733 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1734 { 1735 sl = &static_specs[i]; 1736 sl->next = next; 1737 next = sl; 1738 } 1739 1740 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1741 /* ??? If neither -shared-libgcc nor --static-libgcc was 1742 seen, then we should be making an educated guess. Some proposed 1743 heuristics for ELF include: 1744 1745 (1) If "-Wl,--export-dynamic", then it's a fair bet that the 1746 program will be doing dynamic loading, which will likely 1747 need the shared libgcc. 1748 1749 (2) If "-ldl", then it's also a fair bet that we're doing 1750 dynamic loading. 1751 1752 (3) For each ET_DYN we're linking against (either through -lfoo 1753 or /some/path/foo.so), check to see whether it or one of 1754 its dependencies depends on a shared libgcc. 1755 1756 (4) If "-shared" 1757 1758 If the runtime is fixed to look for program headers instead 1759 of calling __register_frame_info at all, for each object, 1760 use the shared libgcc if any EH symbol referenced. 1761 1762 If crtstuff is fixed to not invoke __register_frame_info 1763 automatically, for each object, use the shared libgcc if 1764 any non-empty unwind section found. 1765 1766 Doing any of this probably requires invoking an external program to 1767 do the actual object file scanning. */ 1768 { 1769 const char *p = libgcc_spec; 1770 int in_sep = 1; 1771 1772 /* Transform the extant libgcc_spec into one that uses the shared libgcc 1773 when given the proper command line arguments. */ 1774 while (*p) 1775 { 1776 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) 1777 { 1778 init_gcc_specs (&obstack, 1779 "-lgcc_s" 1780 #ifdef USE_LIBUNWIND_EXCEPTIONS 1781 " -lunwind" 1782 #endif 1783 , 1784 "-lgcc", 1785 "-lgcc_eh" 1786 #ifdef USE_LIBUNWIND_EXCEPTIONS 1787 # ifdef HAVE_LD_STATIC_DYNAMIC 1788 " %{!static:%{!static-pie:" LD_STATIC_OPTION "}} -lunwind" 1789 " %{!static:%{!static-pie:" LD_DYNAMIC_OPTION "}}" 1790 # else 1791 " -lunwind" 1792 # endif 1793 #endif 1794 ); 1795 1796 p += 5; 1797 in_sep = 0; 1798 } 1799 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) 1800 { 1801 /* Ug. We don't know shared library extensions. Hope that 1802 systems that use this form don't do shared libraries. */ 1803 init_gcc_specs (&obstack, 1804 "-lgcc_s", 1805 "libgcc.a%s", 1806 "libgcc_eh.a%s" 1807 #ifdef USE_LIBUNWIND_EXCEPTIONS 1808 " -lunwind" 1809 #endif 1810 ); 1811 p += 10; 1812 in_sep = 0; 1813 } 1814 else 1815 { 1816 obstack_1grow (&obstack, *p); 1817 in_sep = (*p == ' '); 1818 p += 1; 1819 } 1820 } 1821 1822 obstack_1grow (&obstack, '\0'); 1823 libgcc_spec = XOBFINISH (&obstack, const char *); 1824 } 1825 #endif 1826 #ifdef USE_AS_TRADITIONAL_FORMAT 1827 /* Prepend "--traditional-format" to whatever asm_spec we had before. */ 1828 { 1829 static const char tf[] = "--traditional-format "; 1830 obstack_grow (&obstack, tf, sizeof (tf) - 1); 1831 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); 1832 asm_spec = XOBFINISH (&obstack, const char *); 1833 } 1834 #endif 1835 1836 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ 1837 defined LINKER_HASH_STYLE 1838 # ifdef LINK_BUILDID_SPEC 1839 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ 1840 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1); 1841 # endif 1842 # ifdef LINK_EH_SPEC 1843 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ 1844 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1); 1845 # endif 1846 # ifdef LINKER_HASH_STYLE 1847 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had 1848 before. */ 1849 { 1850 static const char hash_style[] = "--hash-style="; 1851 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1); 1852 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1); 1853 obstack_1grow (&obstack, ' '); 1854 } 1855 # endif 1856 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 1857 link_spec = XOBFINISH (&obstack, const char *); 1858 #endif 1859 1860 specs = sl; 1861 } 1862 1863 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is 1864 removed; If the spec starts with a + then SPEC is added to the end of the 1865 current spec. */ 1866 1867 static void 1868 set_spec (const char *name, const char *spec, bool user_p) 1869 { 1870 struct spec_list *sl; 1871 const char *old_spec; 1872 int name_len = strlen (name); 1873 int i; 1874 1875 /* If this is the first call, initialize the statically allocated specs. */ 1876 if (!specs) 1877 { 1878 struct spec_list *next = (struct spec_list *) 0; 1879 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1880 { 1881 sl = &static_specs[i]; 1882 sl->next = next; 1883 next = sl; 1884 } 1885 specs = sl; 1886 } 1887 1888 /* See if the spec already exists. */ 1889 for (sl = specs; sl; sl = sl->next) 1890 if (name_len == sl->name_len && !strcmp (sl->name, name)) 1891 break; 1892 1893 if (!sl) 1894 { 1895 /* Not found - make it. */ 1896 sl = XNEW (struct spec_list); 1897 sl->name = xstrdup (name); 1898 sl->name_len = name_len; 1899 sl->ptr_spec = &sl->ptr; 1900 sl->alloc_p = 0; 1901 *(sl->ptr_spec) = ""; 1902 sl->next = specs; 1903 sl->default_ptr = NULL; 1904 specs = sl; 1905 } 1906 1907 old_spec = *(sl->ptr_spec); 1908 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) 1909 ? concat (old_spec, spec + 1, NULL) 1910 : xstrdup (spec)); 1911 1912 #ifdef DEBUG_SPECS 1913 if (verbose_flag) 1914 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); 1915 #endif 1916 1917 /* Free the old spec. */ 1918 if (old_spec && sl->alloc_p) 1919 free (CONST_CAST (char *, old_spec)); 1920 1921 sl->user_p = user_p; 1922 sl->alloc_p = true; 1923 } 1924 1925 /* Accumulate a command (program name and args), and run it. */ 1926 1927 typedef const char *const_char_p; /* For DEF_VEC_P. */ 1928 1929 /* Vector of pointers to arguments in the current line of specifications. */ 1930 1931 static vec<const_char_p> argbuf; 1932 1933 /* Were the options -c, -S or -E passed. */ 1934 static int have_c = 0; 1935 1936 /* Was the option -o passed. */ 1937 static int have_o = 0; 1938 1939 /* Was the option -E passed. */ 1940 static int have_E = 0; 1941 1942 /* Pointer to output file name passed in with -o. */ 1943 static const char *output_file = 0; 1944 1945 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated 1946 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for 1947 it here. */ 1948 1949 static struct temp_name { 1950 const char *suffix; /* suffix associated with the code. */ 1951 int length; /* strlen (suffix). */ 1952 int unique; /* Indicates whether %g or %u/%U was used. */ 1953 const char *filename; /* associated filename. */ 1954 int filename_length; /* strlen (filename). */ 1955 struct temp_name *next; 1956 } *temp_names; 1957 1958 /* Number of commands executed so far. */ 1959 1960 static int execution_count; 1961 1962 /* Number of commands that exited with a signal. */ 1963 1964 static int signal_count; 1965 1966 /* Allocate the argument vector. */ 1967 1968 static void 1969 alloc_args (void) 1970 { 1971 argbuf.create (10); 1972 } 1973 1974 /* Clear out the vector of arguments (after a command is executed). */ 1975 1976 static void 1977 clear_args (void) 1978 { 1979 argbuf.truncate (0); 1980 } 1981 1982 /* Add one argument to the vector at the end. 1983 This is done when a space is seen or at the end of the line. 1984 If DELETE_ALWAYS is nonzero, the arg is a filename 1985 and the file should be deleted eventually. 1986 If DELETE_FAILURE is nonzero, the arg is a filename 1987 and the file should be deleted if this compilation fails. */ 1988 1989 static void 1990 store_arg (const char *arg, int delete_always, int delete_failure) 1991 { 1992 argbuf.safe_push (arg); 1993 1994 if (delete_always || delete_failure) 1995 { 1996 const char *p; 1997 /* If the temporary file we should delete is specified as 1998 part of a joined argument extract the filename. */ 1999 if (arg[0] == '-' 2000 && (p = strrchr (arg, '='))) 2001 arg = p + 1; 2002 record_temp_file (arg, delete_always, delete_failure); 2003 } 2004 } 2005 2006 /* Load specs from a file name named FILENAME, replacing occurrences of 2007 various different types of line-endings, \r\n, \n\r and just \r, with 2008 a single \n. */ 2009 2010 static char * 2011 load_specs (const char *filename) 2012 { 2013 int desc; 2014 int readlen; 2015 struct stat statbuf; 2016 char *buffer; 2017 char *buffer_p; 2018 char *specs; 2019 char *specs_p; 2020 2021 if (verbose_flag) 2022 fnotice (stderr, "Reading specs from %s\n", filename); 2023 2024 /* Open and stat the file. */ 2025 desc = open (filename, O_RDONLY, 0); 2026 if (desc < 0) 2027 pfatal_with_name (filename); 2028 if (stat (filename, &statbuf) < 0) 2029 pfatal_with_name (filename); 2030 2031 /* Read contents of file into BUFFER. */ 2032 buffer = XNEWVEC (char, statbuf.st_size + 1); 2033 readlen = read (desc, buffer, (unsigned) statbuf.st_size); 2034 if (readlen < 0) 2035 pfatal_with_name (filename); 2036 buffer[readlen] = 0; 2037 close (desc); 2038 2039 specs = XNEWVEC (char, readlen + 1); 2040 specs_p = specs; 2041 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) 2042 { 2043 int skip = 0; 2044 char c = *buffer_p; 2045 if (c == '\r') 2046 { 2047 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ 2048 skip = 1; 2049 else if (*(buffer_p + 1) == '\n') /* \r\n */ 2050 skip = 1; 2051 else /* \r */ 2052 c = '\n'; 2053 } 2054 if (! skip) 2055 *specs_p++ = c; 2056 } 2057 *specs_p = '\0'; 2058 2059 free (buffer); 2060 return (specs); 2061 } 2062 2063 /* Read compilation specs from a file named FILENAME, 2064 replacing the default ones. 2065 2066 A suffix which starts with `*' is a definition for 2067 one of the machine-specific sub-specs. The "suffix" should be 2068 *asm, *cc1, *cpp, *link, *startfile, etc. 2069 The corresponding spec is stored in asm_spec, etc., 2070 rather than in the `compilers' vector. 2071 2072 Anything invalid in the file is a fatal error. */ 2073 2074 static void 2075 read_specs (const char *filename, bool main_p, bool user_p) 2076 { 2077 char *buffer; 2078 char *p; 2079 2080 buffer = load_specs (filename); 2081 2082 /* Scan BUFFER for specs, putting them in the vector. */ 2083 p = buffer; 2084 while (1) 2085 { 2086 char *suffix; 2087 char *spec; 2088 char *in, *out, *p1, *p2, *p3; 2089 2090 /* Advance P in BUFFER to the next nonblank nocomment line. */ 2091 p = skip_whitespace (p); 2092 if (*p == 0) 2093 break; 2094 2095 /* Is this a special command that starts with '%'? */ 2096 /* Don't allow this for the main specs file, since it would 2097 encourage people to overwrite it. */ 2098 if (*p == '%' && !main_p) 2099 { 2100 p1 = p; 2101 while (*p && *p != '\n') 2102 p++; 2103 2104 /* Skip '\n'. */ 2105 p++; 2106 2107 if (!strncmp (p1, "%include", sizeof ("%include") - 1) 2108 && (p1[sizeof "%include" - 1] == ' ' 2109 || p1[sizeof "%include" - 1] == '\t')) 2110 { 2111 char *new_filename; 2112 2113 p1 += sizeof ("%include"); 2114 while (*p1 == ' ' || *p1 == '\t') 2115 p1++; 2116 2117 if (*p1++ != '<' || p[-2] != '>') 2118 fatal_error (input_location, 2119 "specs %%include syntax malformed after " 2120 "%ld characters", 2121 (long) (p1 - buffer + 1)); 2122 2123 p[-2] = '\0'; 2124 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 2125 read_specs (new_filename ? new_filename : p1, false, user_p); 2126 continue; 2127 } 2128 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) 2129 && (p1[sizeof "%include_noerr" - 1] == ' ' 2130 || p1[sizeof "%include_noerr" - 1] == '\t')) 2131 { 2132 char *new_filename; 2133 2134 p1 += sizeof "%include_noerr"; 2135 while (*p1 == ' ' || *p1 == '\t') 2136 p1++; 2137 2138 if (*p1++ != '<' || p[-2] != '>') 2139 fatal_error (input_location, 2140 "specs %%include syntax malformed after " 2141 "%ld characters", 2142 (long) (p1 - buffer + 1)); 2143 2144 p[-2] = '\0'; 2145 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 2146 if (new_filename) 2147 read_specs (new_filename, false, user_p); 2148 else if (verbose_flag) 2149 fnotice (stderr, "could not find specs file %s\n", p1); 2150 continue; 2151 } 2152 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) 2153 && (p1[sizeof "%rename" - 1] == ' ' 2154 || p1[sizeof "%rename" - 1] == '\t')) 2155 { 2156 int name_len; 2157 struct spec_list *sl; 2158 struct spec_list *newsl; 2159 2160 /* Get original name. */ 2161 p1 += sizeof "%rename"; 2162 while (*p1 == ' ' || *p1 == '\t') 2163 p1++; 2164 2165 if (! ISALPHA ((unsigned char) *p1)) 2166 fatal_error (input_location, 2167 "specs %%rename syntax malformed after " 2168 "%ld characters", 2169 (long) (p1 - buffer)); 2170 2171 p2 = p1; 2172 while (*p2 && !ISSPACE ((unsigned char) *p2)) 2173 p2++; 2174 2175 if (*p2 != ' ' && *p2 != '\t') 2176 fatal_error (input_location, 2177 "specs %%rename syntax malformed after " 2178 "%ld characters", 2179 (long) (p2 - buffer)); 2180 2181 name_len = p2 - p1; 2182 *p2++ = '\0'; 2183 while (*p2 == ' ' || *p2 == '\t') 2184 p2++; 2185 2186 if (! ISALPHA ((unsigned char) *p2)) 2187 fatal_error (input_location, 2188 "specs %%rename syntax malformed after " 2189 "%ld characters", 2190 (long) (p2 - buffer)); 2191 2192 /* Get new spec name. */ 2193 p3 = p2; 2194 while (*p3 && !ISSPACE ((unsigned char) *p3)) 2195 p3++; 2196 2197 if (p3 != p - 1) 2198 fatal_error (input_location, 2199 "specs %%rename syntax malformed after " 2200 "%ld characters", 2201 (long) (p3 - buffer)); 2202 *p3 = '\0'; 2203 2204 for (sl = specs; sl; sl = sl->next) 2205 if (name_len == sl->name_len && !strcmp (sl->name, p1)) 2206 break; 2207 2208 if (!sl) 2209 fatal_error (input_location, 2210 "specs %s spec was not found to be renamed", p1); 2211 2212 if (strcmp (p1, p2) == 0) 2213 continue; 2214 2215 for (newsl = specs; newsl; newsl = newsl->next) 2216 if (strcmp (newsl->name, p2) == 0) 2217 fatal_error (input_location, 2218 "%s: attempt to rename spec %qs to " 2219 "already defined spec %qs", 2220 filename, p1, p2); 2221 2222 if (verbose_flag) 2223 { 2224 fnotice (stderr, "rename spec %s to %s\n", p1, p2); 2225 #ifdef DEBUG_SPECS 2226 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec)); 2227 #endif 2228 } 2229 2230 set_spec (p2, *(sl->ptr_spec), user_p); 2231 if (sl->alloc_p) 2232 free (CONST_CAST (char *, *(sl->ptr_spec))); 2233 2234 *(sl->ptr_spec) = ""; 2235 sl->alloc_p = 0; 2236 continue; 2237 } 2238 else 2239 fatal_error (input_location, 2240 "specs unknown %% command after %ld characters", 2241 (long) (p1 - buffer)); 2242 } 2243 2244 /* Find the colon that should end the suffix. */ 2245 p1 = p; 2246 while (*p1 && *p1 != ':' && *p1 != '\n') 2247 p1++; 2248 2249 /* The colon shouldn't be missing. */ 2250 if (*p1 != ':') 2251 fatal_error (input_location, 2252 "specs file malformed after %ld characters", 2253 (long) (p1 - buffer)); 2254 2255 /* Skip back over trailing whitespace. */ 2256 p2 = p1; 2257 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) 2258 p2--; 2259 2260 /* Copy the suffix to a string. */ 2261 suffix = save_string (p, p2 - p); 2262 /* Find the next line. */ 2263 p = skip_whitespace (p1 + 1); 2264 if (p[1] == 0) 2265 fatal_error (input_location, 2266 "specs file malformed after %ld characters", 2267 (long) (p - buffer)); 2268 2269 p1 = p; 2270 /* Find next blank line or end of string. */ 2271 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) 2272 p1++; 2273 2274 /* Specs end at the blank line and do not include the newline. */ 2275 spec = save_string (p, p1 - p); 2276 p = p1; 2277 2278 /* Delete backslash-newline sequences from the spec. */ 2279 in = spec; 2280 out = spec; 2281 while (*in != 0) 2282 { 2283 if (in[0] == '\\' && in[1] == '\n') 2284 in += 2; 2285 else if (in[0] == '#') 2286 while (*in && *in != '\n') 2287 in++; 2288 2289 else 2290 *out++ = *in++; 2291 } 2292 *out = 0; 2293 2294 if (suffix[0] == '*') 2295 { 2296 if (! strcmp (suffix, "*link_command")) 2297 link_command_spec = spec; 2298 else 2299 { 2300 set_spec (suffix + 1, spec, user_p); 2301 free (spec); 2302 } 2303 } 2304 else 2305 { 2306 /* Add this pair to the vector. */ 2307 compilers 2308 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); 2309 2310 compilers[n_compilers].suffix = suffix; 2311 compilers[n_compilers].spec = spec; 2312 n_compilers++; 2313 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); 2314 } 2315 2316 if (*suffix == 0) 2317 link_command_spec = spec; 2318 } 2319 2320 if (link_command_spec == 0) 2321 fatal_error (input_location, "spec file has no spec for linking"); 2322 2323 XDELETEVEC (buffer); 2324 } 2325 2326 /* Record the names of temporary files we tell compilers to write, 2327 and delete them at the end of the run. */ 2328 2329 /* This is the common prefix we use to make temp file names. 2330 It is chosen once for each run of this program. 2331 It is substituted into a spec by %g or %j. 2332 Thus, all temp file names contain this prefix. 2333 In practice, all temp file names start with this prefix. 2334 2335 This prefix comes from the envvar TMPDIR if it is defined; 2336 otherwise, from the P_tmpdir macro if that is defined; 2337 otherwise, in /usr/tmp or /tmp; 2338 or finally the current directory if all else fails. */ 2339 2340 static const char *temp_filename; 2341 2342 /* Length of the prefix. */ 2343 2344 static int temp_filename_length; 2345 2346 /* Define the list of temporary files to delete. */ 2347 2348 struct temp_file 2349 { 2350 const char *name; 2351 struct temp_file *next; 2352 }; 2353 2354 /* Queue of files to delete on success or failure of compilation. */ 2355 static struct temp_file *always_delete_queue; 2356 /* Queue of files to delete on failure of compilation. */ 2357 static struct temp_file *failure_delete_queue; 2358 2359 /* Record FILENAME as a file to be deleted automatically. 2360 ALWAYS_DELETE nonzero means delete it if all compilation succeeds; 2361 otherwise delete it in any case. 2362 FAIL_DELETE nonzero means delete it if a compilation step fails; 2363 otherwise delete it in any case. */ 2364 2365 void 2366 record_temp_file (const char *filename, int always_delete, int fail_delete) 2367 { 2368 char *const name = xstrdup (filename); 2369 2370 if (always_delete) 2371 { 2372 struct temp_file *temp; 2373 for (temp = always_delete_queue; temp; temp = temp->next) 2374 if (! filename_cmp (name, temp->name)) 2375 { 2376 free (name); 2377 goto already1; 2378 } 2379 2380 temp = XNEW (struct temp_file); 2381 temp->next = always_delete_queue; 2382 temp->name = name; 2383 always_delete_queue = temp; 2384 2385 already1:; 2386 } 2387 2388 if (fail_delete) 2389 { 2390 struct temp_file *temp; 2391 for (temp = failure_delete_queue; temp; temp = temp->next) 2392 if (! filename_cmp (name, temp->name)) 2393 { 2394 free (name); 2395 goto already2; 2396 } 2397 2398 temp = XNEW (struct temp_file); 2399 temp->next = failure_delete_queue; 2400 temp->name = name; 2401 failure_delete_queue = temp; 2402 2403 already2:; 2404 } 2405 } 2406 2407 /* Delete all the temporary files whose names we previously recorded. */ 2408 2409 #ifndef DELETE_IF_ORDINARY 2410 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ 2411 do \ 2412 { \ 2413 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ 2414 if (unlink (NAME) < 0) \ 2415 if (VERBOSE_FLAG) \ 2416 perror_with_name (NAME); \ 2417 } while (0) 2418 #endif 2419 2420 static void 2421 delete_if_ordinary (const char *name) 2422 { 2423 struct stat st; 2424 #ifdef DEBUG 2425 int i, c; 2426 2427 printf ("Delete %s? (y or n) ", name); 2428 fflush (stdout); 2429 i = getchar (); 2430 if (i != '\n') 2431 while ((c = getchar ()) != '\n' && c != EOF) 2432 ; 2433 2434 if (i == 'y' || i == 'Y') 2435 #endif /* DEBUG */ 2436 DELETE_IF_ORDINARY (name, st, verbose_flag); 2437 } 2438 2439 static void 2440 delete_temp_files (void) 2441 { 2442 struct temp_file *temp; 2443 2444 for (temp = always_delete_queue; temp; temp = temp->next) 2445 delete_if_ordinary (temp->name); 2446 always_delete_queue = 0; 2447 } 2448 2449 /* Delete all the files to be deleted on error. */ 2450 2451 static void 2452 delete_failure_queue (void) 2453 { 2454 struct temp_file *temp; 2455 2456 for (temp = failure_delete_queue; temp; temp = temp->next) 2457 delete_if_ordinary (temp->name); 2458 } 2459 2460 static void 2461 clear_failure_queue (void) 2462 { 2463 failure_delete_queue = 0; 2464 } 2465 2466 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK 2467 returns non-NULL. 2468 If DO_MULTI is true iterate over the paths twice, first with multilib 2469 suffix then without, otherwise iterate over the paths once without 2470 adding a multilib suffix. When DO_MULTI is true, some attempt is made 2471 to avoid visiting the same path twice, but we could do better. For 2472 instance, /usr/lib/../lib is considered different from /usr/lib. 2473 At least EXTRA_SPACE chars past the end of the path passed to 2474 CALLBACK are available for use by the callback. 2475 CALLBACK_INFO allows extra parameters to be passed to CALLBACK. 2476 2477 Returns the value returned by CALLBACK. */ 2478 2479 static void * 2480 for_each_path (const struct path_prefix *paths, 2481 bool do_multi, 2482 size_t extra_space, 2483 void *(*callback) (char *, void *), 2484 void *callback_info) 2485 { 2486 struct prefix_list *pl; 2487 const char *multi_dir = NULL; 2488 const char *multi_os_dir = NULL; 2489 const char *multiarch_suffix = NULL; 2490 const char *multi_suffix; 2491 const char *just_multi_suffix; 2492 char *path = NULL; 2493 void *ret = NULL; 2494 bool skip_multi_dir = false; 2495 bool skip_multi_os_dir = false; 2496 2497 multi_suffix = machine_suffix; 2498 just_multi_suffix = just_machine_suffix; 2499 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) 2500 { 2501 multi_dir = concat (multilib_dir, dir_separator_str, NULL); 2502 multi_suffix = concat (multi_suffix, multi_dir, NULL); 2503 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); 2504 } 2505 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) 2506 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); 2507 if (multiarch_dir) 2508 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); 2509 2510 while (1) 2511 { 2512 size_t multi_dir_len = 0; 2513 size_t multi_os_dir_len = 0; 2514 size_t multiarch_len = 0; 2515 size_t suffix_len; 2516 size_t just_suffix_len; 2517 size_t len; 2518 2519 if (multi_dir) 2520 multi_dir_len = strlen (multi_dir); 2521 if (multi_os_dir) 2522 multi_os_dir_len = strlen (multi_os_dir); 2523 if (multiarch_suffix) 2524 multiarch_len = strlen (multiarch_suffix); 2525 suffix_len = strlen (multi_suffix); 2526 just_suffix_len = strlen (just_multi_suffix); 2527 2528 if (path == NULL) 2529 { 2530 len = paths->max_len + extra_space + 1; 2531 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); 2532 path = XNEWVEC (char, len); 2533 } 2534 2535 for (pl = paths->plist; pl != 0; pl = pl->next) 2536 { 2537 len = strlen (pl->prefix); 2538 memcpy (path, pl->prefix, len); 2539 2540 #if 0 /* DragonFly base: MACHINE/VERSION isn't used anywhere */ 2541 /* Look first in MACHINE/VERSION subdirectory. */ 2542 if (!skip_multi_dir) 2543 { 2544 memcpy (path + len, multi_suffix, suffix_len + 1); 2545 ret = callback (path, callback_info); 2546 if (ret) 2547 break; 2548 } 2549 #endif 2550 2551 /* Some paths are tried with just the machine (ie. target) 2552 subdir. This is used for finding as, ld, etc. */ 2553 if (!skip_multi_dir 2554 && pl->require_machine_suffix == 2) 2555 { 2556 memcpy (path + len, just_multi_suffix, just_suffix_len + 1); 2557 ret = callback (path, callback_info); 2558 if (ret) 2559 break; 2560 } 2561 2562 /* Now try the multiarch path. */ 2563 if (!skip_multi_dir 2564 && !pl->require_machine_suffix && multiarch_dir) 2565 { 2566 memcpy (path + len, multiarch_suffix, multiarch_len + 1); 2567 ret = callback (path, callback_info); 2568 if (ret) 2569 break; 2570 } 2571 2572 /* Now try the base path. */ 2573 if (!pl->require_machine_suffix 2574 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) 2575 { 2576 const char *this_multi; 2577 size_t this_multi_len; 2578 2579 if (pl->os_multilib) 2580 { 2581 this_multi = multi_os_dir; 2582 this_multi_len = multi_os_dir_len; 2583 } 2584 else 2585 { 2586 this_multi = multi_dir; 2587 this_multi_len = multi_dir_len; 2588 } 2589 2590 if (this_multi_len) 2591 memcpy (path + len, this_multi, this_multi_len + 1); 2592 else 2593 path[len] = '\0'; 2594 2595 ret = callback (path, callback_info); 2596 if (ret) 2597 break; 2598 } 2599 } 2600 if (pl) 2601 break; 2602 2603 if (multi_dir == NULL && multi_os_dir == NULL) 2604 break; 2605 2606 /* Run through the paths again, this time without multilibs. 2607 Don't repeat any we have already seen. */ 2608 if (multi_dir) 2609 { 2610 free (CONST_CAST (char *, multi_dir)); 2611 multi_dir = NULL; 2612 free (CONST_CAST (char *, multi_suffix)); 2613 multi_suffix = machine_suffix; 2614 free (CONST_CAST (char *, just_multi_suffix)); 2615 just_multi_suffix = just_machine_suffix; 2616 } 2617 else 2618 skip_multi_dir = true; 2619 if (multi_os_dir) 2620 { 2621 free (CONST_CAST (char *, multi_os_dir)); 2622 multi_os_dir = NULL; 2623 } 2624 else 2625 skip_multi_os_dir = true; 2626 } 2627 2628 if (multi_dir) 2629 { 2630 free (CONST_CAST (char *, multi_dir)); 2631 free (CONST_CAST (char *, multi_suffix)); 2632 free (CONST_CAST (char *, just_multi_suffix)); 2633 } 2634 if (multi_os_dir) 2635 free (CONST_CAST (char *, multi_os_dir)); 2636 if (ret != path) 2637 free (path); 2638 return ret; 2639 } 2640 2641 /* Callback for build_search_list. Adds path to obstack being built. */ 2642 2643 struct add_to_obstack_info { 2644 struct obstack *ob; 2645 bool check_dir; 2646 bool first_time; 2647 }; 2648 2649 static void * 2650 add_to_obstack (char *path, void *data) 2651 { 2652 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; 2653 2654 if (info->check_dir && !is_directory (path, false)) 2655 return NULL; 2656 2657 if (!info->first_time) 2658 obstack_1grow (info->ob, PATH_SEPARATOR); 2659 2660 obstack_grow (info->ob, path, strlen (path)); 2661 2662 info->first_time = false; 2663 return NULL; 2664 } 2665 2666 /* Add or change the value of an environment variable, outputting the 2667 change to standard error if in verbose mode. */ 2668 static void 2669 xputenv (const char *string) 2670 { 2671 env.xput (string); 2672 } 2673 2674 /* Build a list of search directories from PATHS. 2675 PREFIX is a string to prepend to the list. 2676 If CHECK_DIR_P is true we ensure the directory exists. 2677 If DO_MULTI is true, multilib paths are output first, then 2678 non-multilib paths. 2679 This is used mostly by putenv_from_prefixes so we use `collect_obstack'. 2680 It is also used by the --print-search-dirs flag. */ 2681 2682 static char * 2683 build_search_list (const struct path_prefix *paths, const char *prefix, 2684 bool check_dir, bool do_multi) 2685 { 2686 struct add_to_obstack_info info; 2687 2688 info.ob = &collect_obstack; 2689 info.check_dir = check_dir; 2690 info.first_time = true; 2691 2692 obstack_grow (&collect_obstack, prefix, strlen (prefix)); 2693 obstack_1grow (&collect_obstack, '='); 2694 2695 for_each_path (paths, do_multi, 0, add_to_obstack, &info); 2696 2697 obstack_1grow (&collect_obstack, '\0'); 2698 return XOBFINISH (&collect_obstack, char *); 2699 } 2700 2701 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 2702 for collect. */ 2703 2704 static void 2705 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, 2706 bool do_multi) 2707 { 2708 xputenv (build_search_list (paths, env_var, true, do_multi)); 2709 } 2710 2711 /* Check whether NAME can be accessed in MODE. This is like access, 2712 except that it never considers directories to be executable. */ 2713 2714 static int 2715 access_check (const char *name, int mode) 2716 { 2717 if (mode == X_OK) 2718 { 2719 struct stat st; 2720 2721 if (stat (name, &st) < 0 2722 || S_ISDIR (st.st_mode)) 2723 return -1; 2724 } 2725 2726 return access (name, mode); 2727 } 2728 2729 /* Callback for find_a_file. Appends the file name to the directory 2730 path. If the resulting file exists in the right mode, return the 2731 full pathname to the file. */ 2732 2733 struct file_at_path_info { 2734 const char *name; 2735 const char *suffix; 2736 int name_len; 2737 int suffix_len; 2738 int mode; 2739 }; 2740 2741 static void * 2742 file_at_path (char *path, void *data) 2743 { 2744 struct file_at_path_info *info = (struct file_at_path_info *) data; 2745 size_t len = strlen (path); 2746 2747 memcpy (path + len, info->name, info->name_len); 2748 len += info->name_len; 2749 2750 /* Some systems have a suffix for executable files. 2751 So try appending that first. */ 2752 if (info->suffix_len) 2753 { 2754 memcpy (path + len, info->suffix, info->suffix_len + 1); 2755 if (access_check (path, info->mode) == 0) 2756 return path; 2757 } 2758 2759 path[len] = '\0'; 2760 if (access_check (path, info->mode) == 0) 2761 return path; 2762 2763 return NULL; 2764 } 2765 2766 /* Search for NAME using the prefix list PREFIXES. MODE is passed to 2767 access to check permissions. If DO_MULTI is true, search multilib 2768 paths then non-multilib paths, otherwise do not search multilib paths. 2769 Return 0 if not found, otherwise return its name, allocated with malloc. */ 2770 2771 static char * 2772 find_a_file (const struct path_prefix *pprefix, const char *name, int mode, 2773 bool do_multi) 2774 { 2775 struct file_at_path_info info; 2776 2777 #ifdef DEFAULT_ASSEMBLER 2778 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) 2779 return xstrdup (DEFAULT_ASSEMBLER); 2780 #endif 2781 2782 #ifdef DEFAULT_LINKER 2783 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0) 2784 return xstrdup (DEFAULT_LINKER); 2785 #endif 2786 2787 /* Determine the filename to execute (special case for absolute paths). */ 2788 2789 if (IS_ABSOLUTE_PATH (name)) 2790 { 2791 if (access (name, mode) == 0) 2792 return xstrdup (name); 2793 2794 return NULL; 2795 } 2796 2797 info.name = name; 2798 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; 2799 info.name_len = strlen (info.name); 2800 info.suffix_len = strlen (info.suffix); 2801 info.mode = mode; 2802 2803 return (char*) for_each_path (pprefix, do_multi, 2804 info.name_len + info.suffix_len, 2805 file_at_path, &info); 2806 } 2807 2808 /* Ranking of prefixes in the sort list. -B prefixes are put before 2809 all others. */ 2810 2811 enum path_prefix_priority 2812 { 2813 PREFIX_PRIORITY_B_OPT, 2814 PREFIX_PRIORITY_LAST 2815 }; 2816 2817 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending 2818 order according to PRIORITY. Within each PRIORITY, new entries are 2819 appended. 2820 2821 If WARN is nonzero, we will warn if no file is found 2822 through this prefix. WARN should point to an int 2823 which will be set to 1 if this entry is used. 2824 2825 COMPONENT is the value to be passed to update_path. 2826 2827 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without 2828 the complete value of machine_suffix. 2829 2 means try both machine_suffix and just_machine_suffix. */ 2830 2831 static void 2832 add_prefix (struct path_prefix *pprefix, const char *prefix, 2833 const char *component, /* enum prefix_priority */ int priority, 2834 int require_machine_suffix, int os_multilib) 2835 { 2836 struct prefix_list *pl, **prev; 2837 int len; 2838 2839 for (prev = &pprefix->plist; 2840 (*prev) != NULL && (*prev)->priority <= priority; 2841 prev = &(*prev)->next) 2842 ; 2843 2844 /* Keep track of the longest prefix. */ 2845 2846 prefix = update_path (prefix, component); 2847 len = strlen (prefix); 2848 if (len > pprefix->max_len) 2849 pprefix->max_len = len; 2850 2851 pl = XNEW (struct prefix_list); 2852 pl->prefix = prefix; 2853 pl->require_machine_suffix = require_machine_suffix; 2854 pl->priority = priority; 2855 pl->os_multilib = os_multilib; 2856 2857 /* Insert after PREV. */ 2858 pl->next = (*prev); 2859 (*prev) = pl; 2860 } 2861 2862 /* Same as add_prefix, but prepending target_system_root to prefix. */ 2863 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */ 2864 static void 2865 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, 2866 const char *component, 2867 /* enum prefix_priority */ int priority, 2868 int require_machine_suffix, int os_multilib) 2869 { 2870 if (!IS_ABSOLUTE_PATH (prefix)) 2871 fatal_error (input_location, "system path %qs is not absolute", prefix); 2872 2873 if (target_system_root) 2874 { 2875 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); 2876 size_t sysroot_len = strlen (target_system_root); 2877 2878 if (sysroot_len > 0 2879 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) 2880 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; 2881 2882 if (target_sysroot_suffix) 2883 prefix = concat (sysroot_no_trailing_dir_separator, 2884 target_sysroot_suffix, prefix, NULL); 2885 else 2886 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); 2887 2888 free (sysroot_no_trailing_dir_separator); 2889 2890 /* We have to override this because GCC's notion of sysroot 2891 moves along with GCC. */ 2892 component = "GCC"; 2893 } 2894 2895 add_prefix (pprefix, prefix, component, priority, 2896 require_machine_suffix, os_multilib); 2897 } 2898 2899 /* Execute the command specified by the arguments on the current line of spec. 2900 When using pipes, this includes several piped-together commands 2901 with `|' between them. 2902 2903 Return 0 if successful, -1 if failed. */ 2904 2905 static int 2906 execute (void) 2907 { 2908 int i; 2909 int n_commands; /* # of command. */ 2910 char *string; 2911 struct pex_obj *pex; 2912 struct command 2913 { 2914 const char *prog; /* program name. */ 2915 const char **argv; /* vector of args. */ 2916 }; 2917 const char *arg; 2918 2919 struct command *commands; /* each command buffer with above info. */ 2920 2921 gcc_assert (!processing_spec_function); 2922 2923 if (wrapper_string) 2924 { 2925 string = find_a_file (&exec_prefixes, 2926 argbuf[0], X_OK, false); 2927 if (string) 2928 argbuf[0] = string; 2929 insert_wrapper (wrapper_string); 2930 } 2931 2932 /* Count # of piped commands. */ 2933 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) 2934 if (strcmp (arg, "|") == 0) 2935 n_commands++; 2936 2937 /* Get storage for each command. */ 2938 commands = (struct command *) alloca (n_commands * sizeof (struct command)); 2939 2940 /* Split argbuf into its separate piped processes, 2941 and record info about each one. 2942 Also search for the programs that are to be run. */ 2943 2944 argbuf.safe_push (0); 2945 2946 commands[0].prog = argbuf[0]; /* first command. */ 2947 commands[0].argv = argbuf.address (); 2948 2949 if (!wrapper_string) 2950 { 2951 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); 2952 commands[0].argv[0] = (string) ? string : commands[0].argv[0]; 2953 } 2954 2955 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) 2956 if (arg && strcmp (arg, "|") == 0) 2957 { /* each command. */ 2958 #if defined (__MSDOS__) || defined (OS2) || defined (VMS) 2959 fatal_error (input_location, "-pipe not supported"); 2960 #endif 2961 argbuf[i] = 0; /* Termination of 2962 command args. */ 2963 commands[n_commands].prog = argbuf[i + 1]; 2964 commands[n_commands].argv 2965 = &(argbuf.address ())[i + 1]; 2966 string = find_a_file (&exec_prefixes, commands[n_commands].prog, 2967 X_OK, false); 2968 if (string) 2969 commands[n_commands].argv[0] = string; 2970 n_commands++; 2971 } 2972 2973 /* If -v, print what we are about to do, and maybe query. */ 2974 2975 if (verbose_flag) 2976 { 2977 /* For help listings, put a blank line between sub-processes. */ 2978 if (print_help_list) 2979 fputc ('\n', stderr); 2980 2981 /* Print each piped command as a separate line. */ 2982 for (i = 0; i < n_commands; i++) 2983 { 2984 const char *const *j; 2985 2986 if (verbose_only_flag) 2987 { 2988 for (j = commands[i].argv; *j; j++) 2989 { 2990 const char *p; 2991 for (p = *j; *p; ++p) 2992 if (!ISALNUM ((unsigned char) *p) 2993 && *p != '_' && *p != '/' && *p != '-' && *p != '.') 2994 break; 2995 if (*p || !*j) 2996 { 2997 fprintf (stderr, " \""); 2998 for (p = *j; *p; ++p) 2999 { 3000 if (*p == '"' || *p == '\\' || *p == '$') 3001 fputc ('\\', stderr); 3002 fputc (*p, stderr); 3003 } 3004 fputc ('"', stderr); 3005 } 3006 /* If it's empty, print "". */ 3007 else if (!**j) 3008 fprintf (stderr, " \"\""); 3009 else 3010 fprintf (stderr, " %s", *j); 3011 } 3012 } 3013 else 3014 for (j = commands[i].argv; *j; j++) 3015 /* If it's empty, print "". */ 3016 if (!**j) 3017 fprintf (stderr, " \"\""); 3018 else 3019 fprintf (stderr, " %s", *j); 3020 3021 /* Print a pipe symbol after all but the last command. */ 3022 if (i + 1 != n_commands) 3023 fprintf (stderr, " |"); 3024 fprintf (stderr, "\n"); 3025 } 3026 fflush (stderr); 3027 if (verbose_only_flag != 0) 3028 { 3029 /* verbose_only_flag should act as if the spec was 3030 executed, so increment execution_count before 3031 returning. This prevents spurious warnings about 3032 unused linker input files, etc. */ 3033 execution_count++; 3034 return 0; 3035 } 3036 #ifdef DEBUG 3037 fnotice (stderr, "\nGo ahead? (y or n) "); 3038 fflush (stderr); 3039 i = getchar (); 3040 if (i != '\n') 3041 while (getchar () != '\n') 3042 ; 3043 3044 if (i != 'y' && i != 'Y') 3045 return 0; 3046 #endif /* DEBUG */ 3047 } 3048 3049 #ifdef ENABLE_VALGRIND_CHECKING 3050 /* Run the each command through valgrind. To simplify prepending the 3051 path to valgrind and the option "-q" (for quiet operation unless 3052 something triggers), we allocate a separate argv array. */ 3053 3054 for (i = 0; i < n_commands; i++) 3055 { 3056 const char **argv; 3057 int argc; 3058 int j; 3059 3060 for (argc = 0; commands[i].argv[argc] != NULL; argc++) 3061 ; 3062 3063 argv = XALLOCAVEC (const char *, argc + 3); 3064 3065 argv[0] = VALGRIND_PATH; 3066 argv[1] = "-q"; 3067 for (j = 2; j < argc + 2; j++) 3068 argv[j] = commands[i].argv[j - 2]; 3069 argv[j] = NULL; 3070 3071 commands[i].argv = argv; 3072 commands[i].prog = argv[0]; 3073 } 3074 #endif 3075 3076 /* Run each piped subprocess. */ 3077 3078 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) 3079 ? PEX_RECORD_TIMES : 0), 3080 progname, temp_filename); 3081 if (pex == NULL) 3082 fatal_error (input_location, "pex_init failed: %m"); 3083 3084 for (i = 0; i < n_commands; i++) 3085 { 3086 const char *errmsg; 3087 int err; 3088 const char *string = commands[i].argv[0]; 3089 3090 errmsg = pex_run (pex, 3091 ((i + 1 == n_commands ? PEX_LAST : 0) 3092 | (string == commands[i].prog ? PEX_SEARCH : 0)), 3093 string, CONST_CAST (char **, commands[i].argv), 3094 NULL, NULL, &err); 3095 if (errmsg != NULL) 3096 { 3097 if (err == 0) 3098 fatal_error (input_location, errmsg); 3099 else 3100 { 3101 errno = err; 3102 pfatal_with_name (errmsg); 3103 } 3104 } 3105 3106 if (i && string != commands[i].prog) 3107 free (CONST_CAST (char *, string)); 3108 } 3109 3110 execution_count++; 3111 3112 /* Wait for all the subprocesses to finish. */ 3113 3114 { 3115 int *statuses; 3116 struct pex_time *times = NULL; 3117 int ret_code = 0; 3118 3119 statuses = (int *) alloca (n_commands * sizeof (int)); 3120 if (!pex_get_status (pex, n_commands, statuses)) 3121 fatal_error (input_location, "failed to get exit status: %m"); 3122 3123 if (report_times || report_times_to_file) 3124 { 3125 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time)); 3126 if (!pex_get_times (pex, n_commands, times)) 3127 fatal_error (input_location, "failed to get process times: %m"); 3128 } 3129 3130 pex_free (pex); 3131 3132 for (i = 0; i < n_commands; ++i) 3133 { 3134 int status = statuses[i]; 3135 3136 if (WIFSIGNALED (status)) 3137 switch (WTERMSIG (status)) 3138 { 3139 case SIGINT: 3140 case SIGTERM: 3141 /* SIGQUIT and SIGKILL are not available on MinGW. */ 3142 #ifdef SIGQUIT 3143 case SIGQUIT: 3144 #endif 3145 #ifdef SIGKILL 3146 case SIGKILL: 3147 #endif 3148 /* The user (or environment) did something to the 3149 inferior. Making this an ICE confuses the user into 3150 thinking there's a compiler bug. Much more likely is 3151 the user or OOM killer nuked it. */ 3152 fatal_error (input_location, 3153 "%s signal terminated program %s", 3154 strsignal (WTERMSIG (status)), 3155 commands[i].prog); 3156 break; 3157 3158 #ifdef SIGPIPE 3159 case SIGPIPE: 3160 /* SIGPIPE is a special case. It happens in -pipe mode 3161 when the compiler dies before the preprocessor is 3162 done, or the assembler dies before the compiler is 3163 done. There's generally been an error already, and 3164 this is just fallout. So don't generate another 3165 error unless we would otherwise have succeeded. */ 3166 if (signal_count || greatest_status >= MIN_FATAL_STATUS) 3167 { 3168 signal_count++; 3169 ret_code = -1; 3170 break; 3171 } 3172 #endif 3173 /* FALLTHROUGH */ 3174 3175 default: 3176 /* The inferior failed to catch the signal. */ 3177 internal_error_no_backtrace ("%s signal terminated program %s", 3178 strsignal (WTERMSIG (status)), 3179 commands[i].prog); 3180 } 3181 else if (WIFEXITED (status) 3182 && WEXITSTATUS (status) >= MIN_FATAL_STATUS) 3183 { 3184 /* For ICEs in cc1, cc1obj, cc1plus see if it is 3185 reproducible or not. */ 3186 const char *p; 3187 if (flag_report_bug 3188 && WEXITSTATUS (status) == ICE_EXIT_CODE 3189 && i == 0 3190 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR)) 3191 && ! strncmp (p + 1, "cc1", 3)) 3192 try_generate_repro (commands[0].argv); 3193 if (WEXITSTATUS (status) > greatest_status) 3194 greatest_status = WEXITSTATUS (status); 3195 ret_code = -1; 3196 } 3197 3198 if (report_times || report_times_to_file) 3199 { 3200 struct pex_time *pt = ×[i]; 3201 double ut, st; 3202 3203 ut = ((double) pt->user_seconds 3204 + (double) pt->user_microseconds / 1.0e6); 3205 st = ((double) pt->system_seconds 3206 + (double) pt->system_microseconds / 1.0e6); 3207 3208 if (ut + st != 0) 3209 { 3210 if (report_times) 3211 fnotice (stderr, "# %s %.2f %.2f\n", 3212 commands[i].prog, ut, st); 3213 3214 if (report_times_to_file) 3215 { 3216 int c = 0; 3217 const char *const *j; 3218 3219 fprintf (report_times_to_file, "%g %g", ut, st); 3220 3221 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) 3222 { 3223 const char *p; 3224 for (p = *j; *p; ++p) 3225 if (*p == '"' || *p == '\\' || *p == '$' 3226 || ISSPACE (*p)) 3227 break; 3228 3229 if (*p) 3230 { 3231 fprintf (report_times_to_file, " \""); 3232 for (p = *j; *p; ++p) 3233 { 3234 if (*p == '"' || *p == '\\' || *p == '$') 3235 fputc ('\\', report_times_to_file); 3236 fputc (*p, report_times_to_file); 3237 } 3238 fputc ('"', report_times_to_file); 3239 } 3240 else 3241 fprintf (report_times_to_file, " %s", *j); 3242 } 3243 3244 fputc ('\n', report_times_to_file); 3245 } 3246 } 3247 } 3248 } 3249 3250 if (commands[0].argv[0] != commands[0].prog) 3251 free (CONST_CAST (char *, commands[0].argv[0])); 3252 3253 return ret_code; 3254 } 3255 } 3256 3257 /* Find all the switches given to us 3258 and make a vector describing them. 3259 The elements of the vector are strings, one per switch given. 3260 If a switch uses following arguments, then the `part1' field 3261 is the switch itself and the `args' field 3262 is a null-terminated vector containing the following arguments. 3263 Bits in the `live_cond' field are: 3264 SWITCH_LIVE to indicate this switch is true in a conditional spec. 3265 SWITCH_FALSE to indicate this switch is overridden by a later switch. 3266 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S). 3267 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored. 3268 SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored, 3269 should be included in COLLECT_GCC_OPTIONS. 3270 in all do_spec calls afterwards. Used for %<S from self specs. 3271 The `known' field describes whether this is an internal switch. 3272 The `validated' field describes whether any spec has looked at this switch; 3273 if it remains false at the end of the run, the switch must be meaningless. 3274 The `ordering' field is used to temporarily mark switches that have to be 3275 kept in a specific order. */ 3276 3277 #define SWITCH_LIVE (1 << 0) 3278 #define SWITCH_FALSE (1 << 1) 3279 #define SWITCH_IGNORE (1 << 2) 3280 #define SWITCH_IGNORE_PERMANENTLY (1 << 3) 3281 #define SWITCH_KEEP_FOR_GCC (1 << 4) 3282 3283 struct switchstr 3284 { 3285 const char *part1; 3286 const char **args; 3287 unsigned int live_cond; 3288 bool known; 3289 bool validated; 3290 bool ordering; 3291 }; 3292 3293 static struct switchstr *switches; 3294 3295 static int n_switches; 3296 3297 static int n_switches_alloc; 3298 3299 /* Set to zero if -fcompare-debug is disabled, positive if it's 3300 enabled and we're running the first compilation, negative if it's 3301 enabled and we're running the second compilation. For most of the 3302 time, it's in the range -1..1, but it can be temporarily set to 2 3303 or 3 to indicate that the -fcompare-debug flags didn't come from 3304 the command-line, but rather from the GCC_COMPARE_DEBUG environment 3305 variable, until a synthesized -fcompare-debug flag is added to the 3306 command line. */ 3307 int compare_debug; 3308 3309 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */ 3310 int compare_debug_second; 3311 3312 /* Set to the flags that should be passed to the second compilation in 3313 a -fcompare-debug compilation. */ 3314 const char *compare_debug_opt; 3315 3316 static struct switchstr *switches_debug_check[2]; 3317 3318 static int n_switches_debug_check[2]; 3319 3320 static int n_switches_alloc_debug_check[2]; 3321 3322 static char *debug_check_temp_file[2]; 3323 3324 /* Language is one of three things: 3325 3326 1) The name of a real programming language. 3327 2) NULL, indicating that no one has figured out 3328 what it is yet. 3329 3) '*', indicating that the file should be passed 3330 to the linker. */ 3331 struct infile 3332 { 3333 const char *name; 3334 const char *language; 3335 struct compiler *incompiler; 3336 bool compiled; 3337 bool preprocessed; 3338 }; 3339 3340 /* Also a vector of input files specified. */ 3341 3342 static struct infile *infiles; 3343 3344 int n_infiles; 3345 3346 static int n_infiles_alloc; 3347 3348 /* True if undefined environment variables encountered during spec processing 3349 are ok to ignore, typically when we're running for --help or --version. */ 3350 3351 static bool spec_undefvar_allowed; 3352 3353 /* True if multiple input files are being compiled to a single 3354 assembly file. */ 3355 3356 static bool combine_inputs; 3357 3358 /* This counts the number of libraries added by lang_specific_driver, so that 3359 we can tell if there were any user supplied any files or libraries. */ 3360 3361 static int added_libraries; 3362 3363 /* And a vector of corresponding output files is made up later. */ 3364 3365 const char **outfiles; 3366 3367 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3368 3369 /* Convert NAME to a new name if it is the standard suffix. DO_EXE 3370 is true if we should look for an executable suffix. DO_OBJ 3371 is true if we should look for an object suffix. */ 3372 3373 static const char * 3374 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, 3375 int do_obj ATTRIBUTE_UNUSED) 3376 { 3377 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3378 int i; 3379 #endif 3380 int len; 3381 3382 if (name == NULL) 3383 return NULL; 3384 3385 len = strlen (name); 3386 3387 #ifdef HAVE_TARGET_OBJECT_SUFFIX 3388 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ 3389 if (do_obj && len > 2 3390 && name[len - 2] == '.' 3391 && name[len - 1] == 'o') 3392 { 3393 obstack_grow (&obstack, name, len - 2); 3394 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 3395 name = XOBFINISH (&obstack, const char *); 3396 } 3397 #endif 3398 3399 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3400 /* If there is no filetype, make it the executable suffix (which includes 3401 the "."). But don't get confused if we have just "-o". */ 3402 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) 3403 return name; 3404 3405 for (i = len - 1; i >= 0; i--) 3406 if (IS_DIR_SEPARATOR (name[i])) 3407 break; 3408 3409 for (i++; i < len; i++) 3410 if (name[i] == '.') 3411 return name; 3412 3413 obstack_grow (&obstack, name, len); 3414 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, 3415 strlen (TARGET_EXECUTABLE_SUFFIX)); 3416 name = XOBFINISH (&obstack, const char *); 3417 #endif 3418 3419 return name; 3420 } 3421 #endif 3422 3423 /* Display the command line switches accepted by gcc. */ 3424 static void 3425 display_help (void) 3426 { 3427 printf (_("Usage: %s [options] file...\n"), progname); 3428 fputs (_("Options:\n"), stdout); 3429 3430 fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n"), stdout); 3431 fputs (_(" --help Display this information.\n"), stdout); 3432 fputs (_(" --target-help Display target specific command line options.\n"), stdout); 3433 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n"), stdout); 3434 fputs (_(" Display specific types of command line options.\n"), stdout); 3435 if (! verbose_flag) 3436 fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n"), stdout); 3437 fputs (_(" --version Display compiler version information.\n"), stdout); 3438 fputs (_(" -dumpspecs Display all of the built in spec strings.\n"), stdout); 3439 fputs (_(" -dumpversion Display the version of the compiler.\n"), stdout); 3440 fputs (_(" -dumpmachine Display the compiler's target processor.\n"), stdout); 3441 fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n"), stdout); 3442 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n"), stdout); 3443 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n"), stdout); 3444 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n"), stdout); 3445 fputs (_("\ 3446 -print-multiarch Display the target's normalized GNU triplet, used as\n\ 3447 a component in the library path.\n"), stdout); 3448 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n"), stdout); 3449 fputs (_("\ 3450 -print-multi-lib Display the mapping between command line options and\n\ 3451 multiple library search directories.\n"), stdout); 3452 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n"), stdout); 3453 fputs (_(" -print-sysroot Display the target libraries directory.\n"), stdout); 3454 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n"), stdout); 3455 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n"), stdout); 3456 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n"), stdout); 3457 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n"), stdout); 3458 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n"), stdout); 3459 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n"), stdout); 3460 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n"), stdout); 3461 fputs (_(" -save-temps Do not delete intermediate files.\n"), stdout); 3462 fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n"), stdout); 3463 fputs (_("\ 3464 -no-canonical-prefixes Do not canonicalize paths when building relative\n\ 3465 prefixes to other gcc components.\n"), stdout); 3466 fputs (_(" -pipe Use pipes rather than intermediate files.\n"), stdout); 3467 fputs (_(" -time Time the execution of each subprocess.\n"), stdout); 3468 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n"), stdout); 3469 fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n"), stdout); 3470 fputs (_("\ 3471 --sysroot=<directory> Use <directory> as the root directory for headers\n\ 3472 and libraries.\n"), stdout); 3473 fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n"), stdout); 3474 fputs (_(" -v Display the programs invoked by the compiler.\n"), stdout); 3475 fputs (_(" -### Like -v but options quoted and commands not executed.\n"), stdout); 3476 fputs (_(" -E Preprocess only; do not compile, assemble or link.\n"), stdout); 3477 fputs (_(" -S Compile only; do not assemble or link.\n"), stdout); 3478 fputs (_(" -c Compile and assemble, but do not link.\n"), stdout); 3479 fputs (_(" -o <file> Place the output into <file>.\n"), stdout); 3480 fputs (_(" -pie Create a dynamically linked position independent\n\ 3481 executable.\n"), stdout); 3482 fputs (_(" -shared Create a shared library.\n"), stdout); 3483 fputs (_("\ 3484 -x <language> Specify the language of the following input files.\n\ 3485 Permissible languages include: c c++ assembler none\n\ 3486 'none' means revert to the default behavior of\n\ 3487 guessing the language based on the file's extension.\n\ 3488 "), stdout); 3489 3490 printf (_("\ 3491 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ 3492 passed on to the various sub-processes invoked by %s. In order to pass\n\ 3493 other options on to these processes the -W<letter> options must be used.\n\ 3494 "), progname); 3495 3496 /* The rest of the options are displayed by invocations of the various 3497 sub-processes. */ 3498 } 3499 3500 static void 3501 add_preprocessor_option (const char *option, int len) 3502 { 3503 preprocessor_options.safe_push (save_string (option, len)); 3504 } 3505 3506 static void 3507 add_assembler_option (const char *option, int len) 3508 { 3509 assembler_options.safe_push (save_string (option, len)); 3510 } 3511 3512 static void 3513 add_linker_option (const char *option, int len) 3514 { 3515 linker_options.safe_push (save_string (option, len)); 3516 } 3517 3518 /* Allocate space for an input file in infiles. */ 3519 3520 static void 3521 alloc_infile (void) 3522 { 3523 if (n_infiles_alloc == 0) 3524 { 3525 n_infiles_alloc = 16; 3526 infiles = XNEWVEC (struct infile, n_infiles_alloc); 3527 } 3528 else if (n_infiles_alloc == n_infiles) 3529 { 3530 n_infiles_alloc *= 2; 3531 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); 3532 } 3533 } 3534 3535 /* Store an input file with the given NAME and LANGUAGE in 3536 infiles. */ 3537 3538 static void 3539 add_infile (const char *name, const char *language) 3540 { 3541 alloc_infile (); 3542 infiles[n_infiles].name = name; 3543 infiles[n_infiles++].language = language; 3544 } 3545 3546 /* Allocate space for a switch in switches. */ 3547 3548 static void 3549 alloc_switch (void) 3550 { 3551 if (n_switches_alloc == 0) 3552 { 3553 n_switches_alloc = 16; 3554 switches = XNEWVEC (struct switchstr, n_switches_alloc); 3555 } 3556 else if (n_switches_alloc == n_switches) 3557 { 3558 n_switches_alloc *= 2; 3559 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); 3560 } 3561 } 3562 3563 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it 3564 as validated if VALIDATED and KNOWN if it is an internal switch. */ 3565 3566 static void 3567 save_switch (const char *opt, size_t n_args, const char *const *args, 3568 bool validated, bool known) 3569 { 3570 alloc_switch (); 3571 switches[n_switches].part1 = opt + 1; 3572 if (n_args == 0) 3573 switches[n_switches].args = 0; 3574 else 3575 { 3576 switches[n_switches].args = XNEWVEC (const char *, n_args + 1); 3577 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *)); 3578 switches[n_switches].args[n_args] = NULL; 3579 } 3580 3581 switches[n_switches].live_cond = 0; 3582 switches[n_switches].validated = validated; 3583 switches[n_switches].known = known; 3584 switches[n_switches].ordering = 0; 3585 n_switches++; 3586 } 3587 3588 /* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is 3589 not set already. */ 3590 3591 static void 3592 set_source_date_epoch_envvar () 3593 { 3594 /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations 3595 of 64 bit integers. */ 3596 char source_date_epoch[21]; 3597 time_t tt; 3598 3599 errno = 0; 3600 tt = time (NULL); 3601 if (tt < (time_t) 0 || errno != 0) 3602 tt = (time_t) 0; 3603 3604 snprintf (source_date_epoch, 21, "%llu", (unsigned long long) tt); 3605 /* Using setenv instead of xputenv because we want the variable to remain 3606 after finalizing so that it's still set in the second run when using 3607 -fcompare-debug. */ 3608 setenv ("SOURCE_DATE_EPOCH", source_date_epoch, 0); 3609 } 3610 3611 /* Handle an option DECODED that is unknown to the option-processing 3612 machinery. */ 3613 3614 static bool 3615 driver_unknown_option_callback (const struct cl_decoded_option *decoded) 3616 { 3617 const char *opt = decoded->arg; 3618 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' 3619 && !(decoded->errors & CL_ERR_NEGATIVE)) 3620 { 3621 /* Leave unknown -Wno-* options for the compiler proper, to be 3622 diagnosed only if there are warnings. */ 3623 save_switch (decoded->canonical_option[0], 3624 decoded->canonical_option_num_elements - 1, 3625 &decoded->canonical_option[1], false, true); 3626 return false; 3627 } 3628 if (decoded->opt_index == OPT_SPECIAL_unknown) 3629 { 3630 /* Give it a chance to define it a spec file. */ 3631 save_switch (decoded->canonical_option[0], 3632 decoded->canonical_option_num_elements - 1, 3633 &decoded->canonical_option[1], false, false); 3634 return false; 3635 } 3636 else 3637 return true; 3638 } 3639 3640 /* Handle an option DECODED that is not marked as CL_DRIVER. 3641 LANG_MASK will always be CL_DRIVER. */ 3642 3643 static void 3644 driver_wrong_lang_callback (const struct cl_decoded_option *decoded, 3645 unsigned int lang_mask ATTRIBUTE_UNUSED) 3646 { 3647 /* At this point, non-driver options are accepted (and expected to 3648 be passed down by specs) unless marked to be rejected by the 3649 driver. Options to be rejected by the driver but accepted by the 3650 compilers proper are treated just like completely unknown 3651 options. */ 3652 const struct cl_option *option = &cl_options[decoded->opt_index]; 3653 3654 if (option->cl_reject_driver) 3655 error ("unrecognized command line option %qs", 3656 decoded->orig_option_with_args_text); 3657 else 3658 save_switch (decoded->canonical_option[0], 3659 decoded->canonical_option_num_elements - 1, 3660 &decoded->canonical_option[1], false, true); 3661 } 3662 3663 static const char *spec_lang = 0; 3664 static int last_language_n_infiles; 3665 3666 /* Parse -foffload option argument. */ 3667 3668 static void 3669 handle_foffload_option (const char *arg) 3670 { 3671 const char *c, *cur, *n, *next, *end; 3672 char *target; 3673 3674 /* If option argument starts with '-' then no target is specified and we 3675 do not need to parse it. */ 3676 if (arg[0] == '-') 3677 return; 3678 3679 end = strchr (arg, '='); 3680 if (end == NULL) 3681 end = strchr (arg, '\0'); 3682 cur = arg; 3683 3684 while (cur < end) 3685 { 3686 next = strchr (cur, ','); 3687 if (next == NULL) 3688 next = end; 3689 next = (next > end) ? end : next; 3690 3691 target = XNEWVEC (char, next - cur + 1); 3692 memcpy (target, cur, next - cur); 3693 target[next - cur] = '\0'; 3694 3695 /* If 'disable' is passed to the option, stop parsing the option and clean 3696 the list of offload targets. */ 3697 if (strcmp (target, "disable") == 0) 3698 { 3699 free (offload_targets); 3700 offload_targets = xstrdup (""); 3701 break; 3702 } 3703 3704 /* Check that GCC is configured to support the offload target. */ 3705 c = OFFLOAD_TARGETS; 3706 while (c) 3707 { 3708 n = strchr (c, ','); 3709 if (n == NULL) 3710 n = strchr (c, '\0'); 3711 3712 if (next - cur == n - c && strncmp (target, c, n - c) == 0) 3713 break; 3714 3715 c = *n ? n + 1 : NULL; 3716 } 3717 3718 if (!c) 3719 fatal_error (input_location, 3720 "GCC is not configured to support %s as offload target", 3721 target); 3722 3723 if (!offload_targets) 3724 { 3725 offload_targets = target; 3726 target = NULL; 3727 } 3728 else 3729 { 3730 /* Check that the target hasn't already presented in the list. */ 3731 c = offload_targets; 3732 do 3733 { 3734 n = strchr (c, ':'); 3735 if (n == NULL) 3736 n = strchr (c, '\0'); 3737 3738 if (next - cur == n - c && strncmp (c, target, n - c) == 0) 3739 break; 3740 3741 c = n + 1; 3742 } 3743 while (*n); 3744 3745 /* If duplicate is not found, append the target to the list. */ 3746 if (c > n) 3747 { 3748 size_t offload_targets_len = strlen (offload_targets); 3749 offload_targets 3750 = XRESIZEVEC (char, offload_targets, 3751 offload_targets_len + 1 + next - cur + 1); 3752 offload_targets[offload_targets_len++] = ':'; 3753 memcpy (offload_targets + offload_targets_len, target, next - cur + 1); 3754 } 3755 } 3756 3757 cur = next + 1; 3758 XDELETEVEC (target); 3759 } 3760 } 3761 3762 /* Handle a driver option; arguments and return value as for 3763 handle_option. */ 3764 3765 static bool 3766 driver_handle_option (struct gcc_options *opts, 3767 struct gcc_options *opts_set, 3768 const struct cl_decoded_option *decoded, 3769 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, 3770 location_t loc, 3771 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, 3772 diagnostic_context *dc, 3773 void (*) (void)) 3774 { 3775 size_t opt_index = decoded->opt_index; 3776 const char *arg = decoded->arg; 3777 const char *compare_debug_replacement_opt; 3778 int value = decoded->value; 3779 bool validated = false; 3780 bool do_save = true; 3781 3782 gcc_assert (opts == &global_options); 3783 gcc_assert (opts_set == &global_options_set); 3784 gcc_assert (kind == DK_UNSPECIFIED); 3785 gcc_assert (loc == UNKNOWN_LOCATION); 3786 gcc_assert (dc == global_dc); 3787 3788 switch (opt_index) 3789 { 3790 case OPT_dumpspecs: 3791 { 3792 struct spec_list *sl; 3793 init_spec (); 3794 for (sl = specs; sl; sl = sl->next) 3795 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); 3796 if (link_command_spec) 3797 printf ("*link_command:\n%s\n\n", link_command_spec); 3798 exit (0); 3799 } 3800 3801 case OPT_dumpversion: 3802 printf ("%s\n", spec_version); 3803 exit (0); 3804 3805 case OPT_dumpmachine: 3806 printf ("%s\n", spec_machine); 3807 exit (0); 3808 3809 case OPT_dumpfullversion: 3810 printf ("%s\n", BASEVER); 3811 exit (0); 3812 3813 case OPT__version: 3814 print_version = 1; 3815 3816 /* CPP driver cannot obtain switch from cc1_options. */ 3817 if (is_cpp_driver) 3818 add_preprocessor_option ("--version", strlen ("--version")); 3819 add_assembler_option ("--version", strlen ("--version")); 3820 add_linker_option ("--version", strlen ("--version")); 3821 break; 3822 3823 case OPT__help: 3824 print_help_list = 1; 3825 3826 /* CPP driver cannot obtain switch from cc1_options. */ 3827 if (is_cpp_driver) 3828 add_preprocessor_option ("--help", 6); 3829 add_assembler_option ("--help", 6); 3830 add_linker_option ("--help", 6); 3831 break; 3832 3833 case OPT__help_: 3834 print_subprocess_help = 2; 3835 break; 3836 3837 case OPT__target_help: 3838 print_subprocess_help = 1; 3839 3840 /* CPP driver cannot obtain switch from cc1_options. */ 3841 if (is_cpp_driver) 3842 add_preprocessor_option ("--target-help", 13); 3843 add_assembler_option ("--target-help", 13); 3844 add_linker_option ("--target-help", 13); 3845 break; 3846 3847 case OPT__no_sysroot_suffix: 3848 case OPT_pass_exit_codes: 3849 case OPT_print_search_dirs: 3850 case OPT_print_file_name_: 3851 case OPT_print_prog_name_: 3852 case OPT_print_multi_lib: 3853 case OPT_print_multi_directory: 3854 case OPT_print_sysroot: 3855 case OPT_print_multi_os_directory: 3856 case OPT_print_multiarch: 3857 case OPT_print_sysroot_headers_suffix: 3858 case OPT_time: 3859 case OPT_wrapper: 3860 /* These options set the variables specified in common.opt 3861 automatically, and do not need to be saved for spec 3862 processing. */ 3863 do_save = false; 3864 break; 3865 3866 case OPT_print_libgcc_file_name: 3867 print_file_name = "libgcc.a"; 3868 do_save = false; 3869 break; 3870 3871 case OPT_fuse_ld_bfd: 3872 use_ld = ".bfd"; 3873 break; 3874 3875 case OPT_fuse_ld_gold: 3876 use_ld = ".gold"; 3877 break; 3878 3879 case OPT_fcompare_debug_second: 3880 compare_debug_second = 1; 3881 break; 3882 3883 case OPT_fcompare_debug: 3884 switch (value) 3885 { 3886 case 0: 3887 compare_debug_replacement_opt = "-fcompare-debug="; 3888 arg = ""; 3889 goto compare_debug_with_arg; 3890 3891 case 1: 3892 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle"; 3893 arg = "-gtoggle"; 3894 goto compare_debug_with_arg; 3895 3896 default: 3897 gcc_unreachable (); 3898 } 3899 break; 3900 3901 case OPT_fcompare_debug_: 3902 compare_debug_replacement_opt = decoded->canonical_option[0]; 3903 compare_debug_with_arg: 3904 gcc_assert (decoded->canonical_option_num_elements == 1); 3905 gcc_assert (arg != NULL); 3906 if (*arg) 3907 compare_debug = 1; 3908 else 3909 compare_debug = -1; 3910 if (compare_debug < 0) 3911 compare_debug_opt = NULL; 3912 else 3913 compare_debug_opt = arg; 3914 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true); 3915 set_source_date_epoch_envvar (); 3916 return true; 3917 3918 case OPT_fdiagnostics_color_: 3919 diagnostic_color_init (dc, value); 3920 break; 3921 3922 case OPT_Wa_: 3923 { 3924 int prev, j; 3925 /* Pass the rest of this option to the assembler. */ 3926 3927 /* Split the argument at commas. */ 3928 prev = 0; 3929 for (j = 0; arg[j]; j++) 3930 if (arg[j] == ',') 3931 { 3932 add_assembler_option (arg + prev, j - prev); 3933 prev = j + 1; 3934 } 3935 3936 /* Record the part after the last comma. */ 3937 add_assembler_option (arg + prev, j - prev); 3938 } 3939 do_save = false; 3940 break; 3941 3942 case OPT_Wp_: 3943 { 3944 int prev, j; 3945 /* Pass the rest of this option to the preprocessor. */ 3946 3947 /* Split the argument at commas. */ 3948 prev = 0; 3949 for (j = 0; arg[j]; j++) 3950 if (arg[j] == ',') 3951 { 3952 add_preprocessor_option (arg + prev, j - prev); 3953 prev = j + 1; 3954 } 3955 3956 /* Record the part after the last comma. */ 3957 add_preprocessor_option (arg + prev, j - prev); 3958 } 3959 do_save = false; 3960 break; 3961 3962 case OPT_Wl_: 3963 { 3964 int prev, j; 3965 /* Split the argument at commas. */ 3966 prev = 0; 3967 for (j = 0; arg[j]; j++) 3968 if (arg[j] == ',') 3969 { 3970 add_infile (save_string (arg + prev, j - prev), "*"); 3971 prev = j + 1; 3972 } 3973 /* Record the part after the last comma. */ 3974 add_infile (arg + prev, "*"); 3975 } 3976 do_save = false; 3977 break; 3978 3979 case OPT_Xlinker: 3980 add_infile (arg, "*"); 3981 do_save = false; 3982 break; 3983 3984 case OPT_Xpreprocessor: 3985 add_preprocessor_option (arg, strlen (arg)); 3986 do_save = false; 3987 break; 3988 3989 case OPT_Xassembler: 3990 add_assembler_option (arg, strlen (arg)); 3991 do_save = false; 3992 break; 3993 3994 case OPT_l: 3995 /* POSIX allows separation of -l and the lib arg; canonicalize 3996 by concatenating -l with its arg */ 3997 add_infile (concat ("-l", arg, NULL), "*"); 3998 do_save = false; 3999 break; 4000 4001 case OPT_L: 4002 /* Similarly, canonicalize -L for linkers that may not accept 4003 separate arguments. */ 4004 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true); 4005 return true; 4006 4007 case OPT_F: 4008 /* Likewise -F. */ 4009 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true); 4010 return true; 4011 4012 case OPT_save_temps: 4013 save_temps_flag = SAVE_TEMPS_CWD; 4014 validated = true; 4015 break; 4016 4017 case OPT_save_temps_: 4018 if (strcmp (arg, "cwd") == 0) 4019 save_temps_flag = SAVE_TEMPS_CWD; 4020 else if (strcmp (arg, "obj") == 0 4021 || strcmp (arg, "object") == 0) 4022 save_temps_flag = SAVE_TEMPS_OBJ; 4023 else 4024 fatal_error (input_location, "%qs is an unknown -save-temps option", 4025 decoded->orig_option_with_args_text); 4026 break; 4027 4028 case OPT_no_canonical_prefixes: 4029 /* Already handled as a special case, so ignored here. */ 4030 do_save = false; 4031 break; 4032 4033 case OPT_pipe: 4034 validated = true; 4035 /* These options set the variables specified in common.opt 4036 automatically, but do need to be saved for spec 4037 processing. */ 4038 break; 4039 4040 case OPT_specs_: 4041 { 4042 struct user_specs *user = XNEW (struct user_specs); 4043 4044 user->next = (struct user_specs *) 0; 4045 user->filename = arg; 4046 if (user_specs_tail) 4047 user_specs_tail->next = user; 4048 else 4049 user_specs_head = user; 4050 user_specs_tail = user; 4051 } 4052 validated = true; 4053 break; 4054 4055 case OPT__sysroot_: 4056 target_system_root = arg; 4057 target_system_root_changed = 1; 4058 do_save = false; 4059 break; 4060 4061 case OPT_time_: 4062 if (report_times_to_file) 4063 fclose (report_times_to_file); 4064 report_times_to_file = fopen (arg, "a"); 4065 do_save = false; 4066 break; 4067 4068 case OPT____: 4069 /* "-###" 4070 This is similar to -v except that there is no execution 4071 of the commands and the echoed arguments are quoted. It 4072 is intended for use in shell scripts to capture the 4073 driver-generated command line. */ 4074 verbose_only_flag++; 4075 verbose_flag = 1; 4076 do_save = false; 4077 break; 4078 4079 case OPT_B: 4080 { 4081 size_t len = strlen (arg); 4082 4083 /* Catch the case where the user has forgotten to append a 4084 directory separator to the path. Note, they may be using 4085 -B to add an executable name prefix, eg "i386-elf-", in 4086 order to distinguish between multiple installations of 4087 GCC in the same directory. Hence we must check to see 4088 if appending a directory separator actually makes a 4089 valid directory name. */ 4090 if (!IS_DIR_SEPARATOR (arg[len - 1]) 4091 && is_directory (arg, false)) 4092 { 4093 char *tmp = XNEWVEC (char, len + 2); 4094 strcpy (tmp, arg); 4095 tmp[len] = DIR_SEPARATOR; 4096 tmp[++len] = 0; 4097 arg = tmp; 4098 } 4099 4100 add_prefix (&exec_prefixes, arg, NULL, 4101 PREFIX_PRIORITY_B_OPT, 0, 0); 4102 add_prefix (&startfile_prefixes, arg, NULL, 4103 PREFIX_PRIORITY_B_OPT, 0, 0); 4104 add_prefix (&include_prefixes, arg, NULL, 4105 PREFIX_PRIORITY_B_OPT, 0, 0); 4106 } 4107 validated = true; 4108 break; 4109 4110 case OPT_E: 4111 have_E = true; 4112 break; 4113 4114 case OPT_x: 4115 spec_lang = arg; 4116 if (!strcmp (spec_lang, "none")) 4117 /* Suppress the warning if -xnone comes after the last input 4118 file, because alternate command interfaces like g++ might 4119 find it useful to place -xnone after each input file. */ 4120 spec_lang = 0; 4121 else 4122 last_language_n_infiles = n_infiles; 4123 do_save = false; 4124 break; 4125 4126 case OPT_o: 4127 have_o = 1; 4128 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) 4129 arg = convert_filename (arg, ! have_c, 0); 4130 #endif 4131 output_file = arg; 4132 /* Save the output name in case -save-temps=obj was used. */ 4133 save_temps_prefix = xstrdup (arg); 4134 /* On some systems, ld cannot handle "-o" without a space. So 4135 split the option from its argument. */ 4136 save_switch ("-o", 1, &arg, validated, true); 4137 return true; 4138 4139 #ifdef ENABLE_DEFAULT_PIE 4140 case OPT_pie: 4141 /* -pie is turned on by default. */ 4142 #endif 4143 4144 case OPT_static_libgcc: 4145 case OPT_shared_libgcc: 4146 case OPT_static_libgfortran: 4147 case OPT_static_libstdc__: 4148 /* These are always valid, since gcc.c itself understands the 4149 first two, gfortranspec.c understands -static-libgfortran and 4150 g++spec.c understands -static-libstdc++ */ 4151 validated = true; 4152 break; 4153 4154 case OPT_fwpa: 4155 flag_wpa = ""; 4156 break; 4157 4158 case OPT_foffload_: 4159 handle_foffload_option (arg); 4160 break; 4161 4162 default: 4163 /* Various driver options need no special processing at this 4164 point, having been handled in a prescan above or being 4165 handled by specs. */ 4166 break; 4167 } 4168 4169 if (do_save) 4170 save_switch (decoded->canonical_option[0], 4171 decoded->canonical_option_num_elements - 1, 4172 &decoded->canonical_option[1], validated, true); 4173 return true; 4174 } 4175 4176 /* Put the driver's standard set of option handlers in *HANDLERS. */ 4177 4178 static void 4179 set_option_handlers (struct cl_option_handlers *handlers) 4180 { 4181 handlers->unknown_option_callback = driver_unknown_option_callback; 4182 handlers->wrong_lang_callback = driver_wrong_lang_callback; 4183 handlers->num_handlers = 3; 4184 handlers->handlers[0].handler = driver_handle_option; 4185 handlers->handlers[0].mask = CL_DRIVER; 4186 handlers->handlers[1].handler = common_handle_option; 4187 handlers->handlers[1].mask = CL_COMMON; 4188 handlers->handlers[2].handler = target_handle_option; 4189 handlers->handlers[2].mask = CL_TARGET; 4190 } 4191 4192 /* Create the vector `switches' and its contents. 4193 Store its length in `n_switches'. */ 4194 4195 static void 4196 process_command (unsigned int decoded_options_count, 4197 struct cl_decoded_option *decoded_options) 4198 { 4199 const char *temp; 4200 char *temp1; 4201 char *tooldir_prefix, *tooldir_prefix2; 4202 char *(*get_relative_prefix) (const char *, const char *, 4203 const char *) = NULL; 4204 struct cl_option_handlers handlers; 4205 unsigned int j; 4206 4207 gcc_exec_prefix = env.get ("GCC_EXEC_PREFIX"); 4208 4209 n_switches = 0; 4210 n_infiles = 0; 4211 added_libraries = 0; 4212 4213 /* Figure compiler version from version string. */ 4214 4215 compiler_version = temp1 = xstrdup (version_string); 4216 4217 for (; *temp1; ++temp1) 4218 { 4219 if (*temp1 == ' ') 4220 { 4221 *temp1 = '\0'; 4222 break; 4223 } 4224 } 4225 4226 /* Handle any -no-canonical-prefixes flag early, to assign the function 4227 that builds relative prefixes. This function creates default search 4228 paths that are needed later in normal option handling. */ 4229 4230 for (j = 1; j < decoded_options_count; j++) 4231 { 4232 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) 4233 { 4234 get_relative_prefix = make_relative_prefix_ignore_links; 4235 break; 4236 } 4237 } 4238 if (! get_relative_prefix) 4239 get_relative_prefix = make_relative_prefix; 4240 4241 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, 4242 see if we can create it from the pathname specified in 4243 decoded_options[0].arg. */ 4244 4245 gcc_libexec_prefix = standard_libexec_prefix; 4246 #ifndef VMS 4247 /* FIXME: make_relative_prefix doesn't yet work for VMS. */ 4248 if (!gcc_exec_prefix) 4249 { 4250 #if 0 /* DragonFly base: Never use relative prefix (not bootstrapped) */ 4251 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, 4252 standard_bindir_prefix, 4253 standard_exec_prefix); 4254 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, 4255 standard_bindir_prefix, 4256 standard_libexec_prefix); 4257 if (gcc_exec_prefix) 4258 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); 4259 #endif 4260 } 4261 else 4262 { 4263 /* make_relative_prefix requires a program name, but 4264 GCC_EXEC_PREFIX is typically a directory name with a trailing 4265 / (which is ignored by make_relative_prefix), so append a 4266 program name. */ 4267 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); 4268 gcc_libexec_prefix = get_relative_prefix (tmp_prefix, 4269 standard_exec_prefix, 4270 standard_libexec_prefix); 4271 4272 /* The path is unrelocated, so fallback to the original setting. */ 4273 if (!gcc_libexec_prefix) 4274 gcc_libexec_prefix = standard_libexec_prefix; 4275 4276 free (tmp_prefix); 4277 } 4278 #else 4279 #endif 4280 /* From this point onward, gcc_exec_prefix is non-null if the toolchain 4281 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX 4282 or an automatically created GCC_EXEC_PREFIX from 4283 decoded_options[0].arg. */ 4284 4285 /* Do language-specific adjustment/addition of flags. */ 4286 lang_specific_driver (&decoded_options, &decoded_options_count, 4287 &added_libraries); 4288 4289 if (gcc_exec_prefix) 4290 { 4291 int len = strlen (gcc_exec_prefix); 4292 4293 if (len > (int) sizeof ("/lib/gcc/") - 1 4294 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) 4295 { 4296 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; 4297 if (IS_DIR_SEPARATOR (*temp) 4298 && filename_ncmp (temp + 1, "lib", 3) == 0 4299 && IS_DIR_SEPARATOR (temp[4]) 4300 && filename_ncmp (temp + 5, "gcc", 3) == 0) 4301 len -= sizeof ("/lib/gcc/") - 1; 4302 } 4303 4304 #if 0 /* DragonFly base: Bad Paths */ 4305 set_std_prefix (gcc_exec_prefix, len); 4306 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", 4307 PREFIX_PRIORITY_LAST, 0, 0); 4308 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", 4309 PREFIX_PRIORITY_LAST, 0, 0); 4310 #endif 4311 } 4312 4313 /* COMPILER_PATH and LIBRARY_PATH have values 4314 that are lists of directory names with colons. */ 4315 4316 temp = env.get ("COMPILER_PATH"); 4317 if (temp) 4318 { 4319 const char *startp, *endp; 4320 char *nstore = (char *) alloca (strlen (temp) + 3); 4321 4322 startp = endp = temp; 4323 while (1) 4324 { 4325 if (*endp == PATH_SEPARATOR || *endp == 0) 4326 { 4327 strncpy (nstore, startp, endp - startp); 4328 if (endp == startp) 4329 strcpy (nstore, concat (".", dir_separator_str, NULL)); 4330 else if (!IS_DIR_SEPARATOR (endp[-1])) 4331 { 4332 nstore[endp - startp] = DIR_SEPARATOR; 4333 nstore[endp - startp + 1] = 0; 4334 } 4335 else 4336 nstore[endp - startp] = 0; 4337 add_prefix (&exec_prefixes, nstore, 0, 4338 PREFIX_PRIORITY_LAST, 0, 0); 4339 add_prefix (&include_prefixes, nstore, 0, 4340 PREFIX_PRIORITY_LAST, 0, 0); 4341 if (*endp == 0) 4342 break; 4343 endp = startp = endp + 1; 4344 } 4345 else 4346 endp++; 4347 } 4348 } 4349 4350 temp = env.get (LIBRARY_PATH_ENV); 4351 if (temp && *cross_compile == '0') 4352 { 4353 const char *startp, *endp; 4354 char *nstore = (char *) alloca (strlen (temp) + 3); 4355 4356 startp = endp = temp; 4357 while (1) 4358 { 4359 if (*endp == PATH_SEPARATOR || *endp == 0) 4360 { 4361 strncpy (nstore, startp, endp - startp); 4362 if (endp == startp) 4363 strcpy (nstore, concat (".", dir_separator_str, NULL)); 4364 else if (!IS_DIR_SEPARATOR (endp[-1])) 4365 { 4366 nstore[endp - startp] = DIR_SEPARATOR; 4367 nstore[endp - startp + 1] = 0; 4368 } 4369 else 4370 nstore[endp - startp] = 0; 4371 add_prefix (&startfile_prefixes, nstore, NULL, 4372 PREFIX_PRIORITY_LAST, 0, 1); 4373 if (*endp == 0) 4374 break; 4375 endp = startp = endp + 1; 4376 } 4377 else 4378 endp++; 4379 } 4380 } 4381 4382 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ 4383 temp = env.get ("LPATH"); 4384 if (temp && *cross_compile == '0') 4385 { 4386 const char *startp, *endp; 4387 char *nstore = (char *) alloca (strlen (temp) + 3); 4388 4389 startp = endp = temp; 4390 while (1) 4391 { 4392 if (*endp == PATH_SEPARATOR || *endp == 0) 4393 { 4394 strncpy (nstore, startp, endp - startp); 4395 if (endp == startp) 4396 strcpy (nstore, concat (".", dir_separator_str, NULL)); 4397 else if (!IS_DIR_SEPARATOR (endp[-1])) 4398 { 4399 nstore[endp - startp] = DIR_SEPARATOR; 4400 nstore[endp - startp + 1] = 0; 4401 } 4402 else 4403 nstore[endp - startp] = 0; 4404 add_prefix (&startfile_prefixes, nstore, NULL, 4405 PREFIX_PRIORITY_LAST, 0, 1); 4406 if (*endp == 0) 4407 break; 4408 endp = startp = endp + 1; 4409 } 4410 else 4411 endp++; 4412 } 4413 } 4414 4415 /* Process the options and store input files and switches in their 4416 vectors. */ 4417 4418 last_language_n_infiles = -1; 4419 4420 set_option_handlers (&handlers); 4421 4422 for (j = 1; j < decoded_options_count; j++) 4423 { 4424 switch (decoded_options[j].opt_index) 4425 { 4426 case OPT_S: 4427 case OPT_c: 4428 case OPT_E: 4429 have_c = 1; 4430 break; 4431 } 4432 if (have_c) 4433 break; 4434 } 4435 4436 for (j = 1; j < decoded_options_count; j++) 4437 { 4438 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) 4439 { 4440 const char *arg = decoded_options[j].arg; 4441 const char *p = strrchr (arg, '@'); 4442 char *fname; 4443 long offset; 4444 int consumed; 4445 #ifdef HAVE_TARGET_OBJECT_SUFFIX 4446 arg = convert_filename (arg, 0, access (arg, F_OK)); 4447 #endif 4448 /* For LTO static archive support we handle input file 4449 specifications that are composed of a filename and 4450 an offset like FNAME@OFFSET. */ 4451 if (p 4452 && p != arg 4453 && sscanf (p, "@%li%n", &offset, &consumed) >= 1 4454 && strlen (p) == (unsigned int)consumed) 4455 { 4456 fname = (char *)xmalloc (p - arg + 1); 4457 memcpy (fname, arg, p - arg); 4458 fname[p - arg] = '\0'; 4459 /* Only accept non-stdin and existing FNAME parts, otherwise 4460 try with the full name. */ 4461 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0) 4462 { 4463 free (fname); 4464 fname = xstrdup (arg); 4465 } 4466 } 4467 else 4468 fname = xstrdup (arg); 4469 4470 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0) 4471 { 4472 if (fname[0] == '@' && access (fname + 1, F_OK) < 0) 4473 perror_with_name (fname + 1); 4474 else 4475 perror_with_name (fname); 4476 } 4477 else 4478 add_infile (arg, spec_lang); 4479 4480 free (fname); 4481 continue; 4482 } 4483 4484 read_cmdline_option (&global_options, &global_options_set, 4485 decoded_options + j, UNKNOWN_LOCATION, 4486 CL_DRIVER, &handlers, global_dc); 4487 } 4488 4489 /* If the user didn't specify any, default to all configured offload 4490 targets. */ 4491 if (ENABLE_OFFLOADING && offload_targets == NULL) 4492 handle_foffload_option (OFFLOAD_TARGETS); 4493 4494 if (output_file 4495 && strcmp (output_file, "-") != 0 4496 && strcmp (output_file, HOST_BIT_BUCKET) != 0) 4497 { 4498 int i; 4499 for (i = 0; i < n_infiles; i++) 4500 if ((!infiles[i].language || infiles[i].language[0] != '*') 4501 && canonical_filename_eq (infiles[i].name, output_file)) 4502 fatal_error (input_location, 4503 "input file %qs is the same as output file", 4504 output_file); 4505 } 4506 4507 if (output_file != NULL && output_file[0] == '\0') 4508 fatal_error (input_location, "output filename may not be empty"); 4509 4510 /* If -save-temps=obj and -o name, create the prefix to use for %b. 4511 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ 4512 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL) 4513 { 4514 save_temps_length = strlen (save_temps_prefix); 4515 temp = strrchr (lbasename (save_temps_prefix), '.'); 4516 if (temp) 4517 { 4518 save_temps_length -= strlen (temp); 4519 save_temps_prefix[save_temps_length] = '\0'; 4520 } 4521 4522 } 4523 else if (save_temps_prefix != NULL) 4524 { 4525 free (save_temps_prefix); 4526 save_temps_prefix = NULL; 4527 } 4528 4529 if (save_temps_flag && use_pipes) 4530 { 4531 /* -save-temps overrides -pipe, so that temp files are produced */ 4532 if (save_temps_flag) 4533 warning (0, "-pipe ignored because -save-temps specified"); 4534 use_pipes = 0; 4535 } 4536 4537 if (!compare_debug) 4538 { 4539 const char *gcd = env.get ("GCC_COMPARE_DEBUG"); 4540 4541 if (gcd && gcd[0] == '-') 4542 { 4543 compare_debug = 2; 4544 compare_debug_opt = gcd; 4545 } 4546 else if (gcd && *gcd && strcmp (gcd, "0")) 4547 { 4548 compare_debug = 3; 4549 compare_debug_opt = "-gtoggle"; 4550 } 4551 } 4552 else if (compare_debug < 0) 4553 { 4554 compare_debug = 0; 4555 gcc_assert (!compare_debug_opt); 4556 } 4557 4558 /* Set up the search paths. We add directories that we expect to 4559 contain GNU Toolchain components before directories specified by 4560 the machine description so that we will find GNU components (like 4561 the GNU assembler) before those of the host system. */ 4562 4563 /* If we don't know where the toolchain has been installed, use the 4564 configured-in locations. */ 4565 if (!gcc_exec_prefix) 4566 { 4567 #ifndef OS2 4568 #if 1 /* DragonFly base: All tools in the same common location */ 4569 add_prefix (&exec_prefixes, standard_libexec_prefix, NULL, 4570 PREFIX_PRIORITY_LAST, 0, 0); 4571 #endif 4572 #if 0 /* DragonFly base: Bad paths */ 4573 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", 4574 PREFIX_PRIORITY_LAST, 1, 0); 4575 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", 4576 PREFIX_PRIORITY_LAST, 2, 0); 4577 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", 4578 PREFIX_PRIORITY_LAST, 2, 0); 4579 #endif 4580 #endif 4581 #if 0 /* DragonFly base: Bad paths */ 4582 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", 4583 PREFIX_PRIORITY_LAST, 1, 0); 4584 #endif 4585 } 4586 4587 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); 4588 tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine, 4589 dir_separator_str, NULL); 4590 4591 /* Look for tools relative to the location from which the driver is 4592 running, or, if that is not available, the configured prefix. */ 4593 tooldir_prefix 4594 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, 4595 spec_host_machine, dir_separator_str, spec_version, 4596 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL); 4597 free (tooldir_prefix2); 4598 4599 #if 0 /* DragonFly base: Bad paths */ 4600 add_prefix (&exec_prefixes, 4601 concat (tooldir_prefix, "bin", dir_separator_str, NULL), 4602 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); 4603 add_prefix (&startfile_prefixes, 4604 concat (tooldir_prefix, "lib", dir_separator_str, NULL), 4605 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); 4606 #endif 4607 free (tooldir_prefix); 4608 4609 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) 4610 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, 4611 then consider it to relocate with the rest of the GCC installation 4612 if GCC_EXEC_PREFIX is set. 4613 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ 4614 if (target_system_root && !target_system_root_changed && gcc_exec_prefix) 4615 { 4616 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, 4617 standard_bindir_prefix, 4618 target_system_root); 4619 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) 4620 { 4621 target_system_root = tmp_prefix; 4622 target_system_root_changed = 1; 4623 } 4624 } 4625 #endif 4626 4627 /* More prefixes are enabled in main, after we read the specs file 4628 and determine whether this is cross-compilation or not. */ 4629 4630 if (n_infiles == last_language_n_infiles && spec_lang != 0) 4631 warning (0, "%<-x %s%> after last input file has no effect", spec_lang); 4632 4633 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG 4634 environment variable. */ 4635 if (compare_debug == 2 || compare_debug == 3) 4636 { 4637 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL); 4638 save_switch (opt, 0, NULL, false, true); 4639 compare_debug = 1; 4640 } 4641 4642 /* Ensure we only invoke each subprocess once. */ 4643 if (print_subprocess_help || print_help_list || print_version) 4644 { 4645 n_infiles = 0; 4646 4647 /* Create a dummy input file, so that we can pass 4648 the help option on to the various sub-processes. */ 4649 add_infile ("help-dummy", "c"); 4650 } 4651 4652 /* Decide if undefined variable references are allowed in specs. */ 4653 4654 /* -v alone is safe. --version and --help alone or together are safe. Note 4655 that -v would make them unsafe, as they'd then be run for subprocesses as 4656 well, the location of which might depend on variables possibly coming 4657 from self-specs. Note also that the command name is counted in 4658 decoded_options_count. */ 4659 4660 unsigned help_version_count = 0; 4661 4662 if (print_version) 4663 help_version_count++; 4664 4665 if (print_help_list) 4666 help_version_count++; 4667 4668 spec_undefvar_allowed = 4669 ((verbose_flag && decoded_options_count == 2) 4670 || help_version_count == decoded_options_count - 1); 4671 4672 alloc_switch (); 4673 switches[n_switches].part1 = 0; 4674 alloc_infile (); 4675 infiles[n_infiles].name = 0; 4676 } 4677 4678 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS 4679 and place that in the environment. */ 4680 4681 static void 4682 set_collect_gcc_options (void) 4683 { 4684 int i; 4685 int first_time; 4686 4687 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to 4688 the compiler. */ 4689 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", 4690 sizeof ("COLLECT_GCC_OPTIONS=") - 1); 4691 4692 first_time = TRUE; 4693 for (i = 0; (int) i < n_switches; i++) 4694 { 4695 const char *const *args; 4696 const char *p, *q; 4697 if (!first_time) 4698 obstack_grow (&collect_obstack, " ", 1); 4699 4700 first_time = FALSE; 4701 4702 /* Ignore elided switches. */ 4703 if ((switches[i].live_cond 4704 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) 4705 == SWITCH_IGNORE) 4706 continue; 4707 4708 obstack_grow (&collect_obstack, "'-", 2); 4709 q = switches[i].part1; 4710 while ((p = strchr (q, '\''))) 4711 { 4712 obstack_grow (&collect_obstack, q, p - q); 4713 obstack_grow (&collect_obstack, "'\\''", 4); 4714 q = ++p; 4715 } 4716 obstack_grow (&collect_obstack, q, strlen (q)); 4717 obstack_grow (&collect_obstack, "'", 1); 4718 4719 for (args = switches[i].args; args && *args; args++) 4720 { 4721 obstack_grow (&collect_obstack, " '", 2); 4722 q = *args; 4723 while ((p = strchr (q, '\''))) 4724 { 4725 obstack_grow (&collect_obstack, q, p - q); 4726 obstack_grow (&collect_obstack, "'\\''", 4); 4727 q = ++p; 4728 } 4729 obstack_grow (&collect_obstack, q, strlen (q)); 4730 obstack_grow (&collect_obstack, "'", 1); 4731 } 4732 } 4733 obstack_grow (&collect_obstack, "\0", 1); 4734 xputenv (XOBFINISH (&collect_obstack, char *)); 4735 } 4736 4737 /* Process a spec string, accumulating and running commands. */ 4738 4739 /* These variables describe the input file name. 4740 input_file_number is the index on outfiles of this file, 4741 so that the output file name can be stored for later use by %o. 4742 input_basename is the start of the part of the input file 4743 sans all directory names, and basename_length is the number 4744 of characters starting there excluding the suffix .c or whatever. */ 4745 4746 static const char *gcc_input_filename; 4747 static int input_file_number; 4748 size_t input_filename_length; 4749 static int basename_length; 4750 static int suffixed_basename_length; 4751 static const char *input_basename; 4752 static const char *input_suffix; 4753 #ifndef HOST_LACKS_INODE_NUMBERS 4754 static struct stat input_stat; 4755 #endif 4756 static int input_stat_set; 4757 4758 /* The compiler used to process the current input file. */ 4759 static struct compiler *input_file_compiler; 4760 4761 /* These are variables used within do_spec and do_spec_1. */ 4762 4763 /* Nonzero if an arg has been started and not yet terminated 4764 (with space, tab or newline). */ 4765 static int arg_going; 4766 4767 /* Nonzero means %d or %g has been seen; the next arg to be terminated 4768 is a temporary file name. */ 4769 static int delete_this_arg; 4770 4771 /* Nonzero means %w has been seen; the next arg to be terminated 4772 is the output file name of this compilation. */ 4773 static int this_is_output_file; 4774 4775 /* Nonzero means %s has been seen; the next arg to be terminated 4776 is the name of a library file and we should try the standard 4777 search dirs for it. */ 4778 static int this_is_library_file; 4779 4780 /* Nonzero means %T has been seen; the next arg to be terminated 4781 is the name of a linker script and we should try all of the 4782 standard search dirs for it. If it is found insert a --script 4783 command line switch and then substitute the full path in place, 4784 otherwise generate an error message. */ 4785 static int this_is_linker_script; 4786 4787 /* Nonzero means that the input of this command is coming from a pipe. */ 4788 static int input_from_pipe; 4789 4790 /* Nonnull means substitute this for any suffix when outputting a switches 4791 arguments. */ 4792 static const char *suffix_subst; 4793 4794 /* If there is an argument being accumulated, terminate it and store it. */ 4795 4796 static void 4797 end_going_arg (void) 4798 { 4799 if (arg_going) 4800 { 4801 const char *string; 4802 4803 obstack_1grow (&obstack, 0); 4804 string = XOBFINISH (&obstack, const char *); 4805 if (this_is_library_file) 4806 string = find_file (string); 4807 if (this_is_linker_script) 4808 { 4809 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true); 4810 4811 if (full_script_path == NULL) 4812 { 4813 error ("unable to locate default linker script %qs in the library search paths", string); 4814 /* Script was not found on search path. */ 4815 return; 4816 } 4817 store_arg ("--script", false, false); 4818 string = full_script_path; 4819 } 4820 store_arg (string, delete_this_arg, this_is_output_file); 4821 if (this_is_output_file) 4822 outfiles[input_file_number] = string; 4823 arg_going = 0; 4824 } 4825 } 4826 4827 4828 /* Parse the WRAPPER string which is a comma separated list of the command line 4829 and insert them into the beginning of argbuf. */ 4830 4831 static void 4832 insert_wrapper (const char *wrapper) 4833 { 4834 int n = 0; 4835 int i; 4836 char *buf = xstrdup (wrapper); 4837 char *p = buf; 4838 unsigned int old_length = argbuf.length (); 4839 4840 do 4841 { 4842 n++; 4843 while (*p == ',') 4844 p++; 4845 } 4846 while ((p = strchr (p, ',')) != NULL); 4847 4848 argbuf.safe_grow (old_length + n); 4849 memmove (argbuf.address () + n, 4850 argbuf.address (), 4851 old_length * sizeof (const_char_p)); 4852 4853 i = 0; 4854 p = buf; 4855 do 4856 { 4857 while (*p == ',') 4858 { 4859 *p = 0; 4860 p++; 4861 } 4862 argbuf[i] = p; 4863 i++; 4864 } 4865 while ((p = strchr (p, ',')) != NULL); 4866 gcc_assert (i == n); 4867 } 4868 4869 /* Process the spec SPEC and run the commands specified therein. 4870 Returns 0 if the spec is successfully processed; -1 if failed. */ 4871 4872 int 4873 do_spec (const char *spec) 4874 { 4875 int value; 4876 4877 value = do_spec_2 (spec); 4878 4879 /* Force out any unfinished command. 4880 If -pipe, this forces out the last command if it ended in `|'. */ 4881 if (value == 0) 4882 { 4883 if (argbuf.length () > 0 4884 && !strcmp (argbuf.last (), "|")) 4885 argbuf.pop (); 4886 4887 set_collect_gcc_options (); 4888 4889 if (argbuf.length () > 0) 4890 value = execute (); 4891 } 4892 4893 return value; 4894 } 4895 4896 static int 4897 do_spec_2 (const char *spec) 4898 { 4899 int result; 4900 4901 clear_args (); 4902 arg_going = 0; 4903 delete_this_arg = 0; 4904 this_is_output_file = 0; 4905 this_is_library_file = 0; 4906 this_is_linker_script = 0; 4907 input_from_pipe = 0; 4908 suffix_subst = NULL; 4909 4910 result = do_spec_1 (spec, 0, NULL); 4911 4912 end_going_arg (); 4913 4914 return result; 4915 } 4916 4917 4918 /* Process the given spec string and add any new options to the end 4919 of the switches/n_switches array. */ 4920 4921 static void 4922 do_option_spec (const char *name, const char *spec) 4923 { 4924 unsigned int i, value_count, value_len; 4925 const char *p, *q, *value; 4926 char *tmp_spec, *tmp_spec_p; 4927 4928 if (configure_default_options[0].name == NULL) 4929 return; 4930 4931 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) 4932 if (strcmp (configure_default_options[i].name, name) == 0) 4933 break; 4934 if (i == ARRAY_SIZE (configure_default_options)) 4935 return; 4936 4937 value = configure_default_options[i].value; 4938 value_len = strlen (value); 4939 4940 /* Compute the size of the final spec. */ 4941 value_count = 0; 4942 p = spec; 4943 while ((p = strstr (p, "%(VALUE)")) != NULL) 4944 { 4945 p ++; 4946 value_count ++; 4947 } 4948 4949 /* Replace each %(VALUE) by the specified value. */ 4950 tmp_spec = (char *) alloca (strlen (spec) + 1 4951 + value_count * (value_len - strlen ("%(VALUE)"))); 4952 tmp_spec_p = tmp_spec; 4953 q = spec; 4954 while ((p = strstr (q, "%(VALUE)")) != NULL) 4955 { 4956 memcpy (tmp_spec_p, q, p - q); 4957 tmp_spec_p = tmp_spec_p + (p - q); 4958 memcpy (tmp_spec_p, value, value_len); 4959 tmp_spec_p += value_len; 4960 q = p + strlen ("%(VALUE)"); 4961 } 4962 strcpy (tmp_spec_p, q); 4963 4964 do_self_spec (tmp_spec); 4965 } 4966 4967 /* Process the given spec string and add any new options to the end 4968 of the switches/n_switches array. */ 4969 4970 static void 4971 do_self_spec (const char *spec) 4972 { 4973 int i; 4974 4975 do_spec_2 (spec); 4976 do_spec_1 (" ", 0, NULL); 4977 4978 /* Mark %<S switches processed by do_self_spec to be ignored permanently. 4979 do_self_specs adds the replacements to switches array, so it shouldn't 4980 be processed afterwards. */ 4981 for (i = 0; i < n_switches; i++) 4982 if ((switches[i].live_cond & SWITCH_IGNORE)) 4983 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY; 4984 4985 if (argbuf.length () > 0) 4986 { 4987 const char **argbuf_copy; 4988 struct cl_decoded_option *decoded_options; 4989 struct cl_option_handlers handlers; 4990 unsigned int decoded_options_count; 4991 unsigned int j; 4992 4993 /* Create a copy of argbuf with a dummy argv[0] entry for 4994 decode_cmdline_options_to_array. */ 4995 argbuf_copy = XNEWVEC (const char *, 4996 argbuf.length () + 1); 4997 argbuf_copy[0] = ""; 4998 memcpy (argbuf_copy + 1, argbuf.address (), 4999 argbuf.length () * sizeof (const char *)); 5000 5001 decode_cmdline_options_to_array (argbuf.length () + 1, 5002 argbuf_copy, 5003 CL_DRIVER, &decoded_options, 5004 &decoded_options_count); 5005 free (argbuf_copy); 5006 5007 set_option_handlers (&handlers); 5008 5009 for (j = 1; j < decoded_options_count; j++) 5010 { 5011 switch (decoded_options[j].opt_index) 5012 { 5013 case OPT_SPECIAL_input_file: 5014 /* Specs should only generate options, not input 5015 files. */ 5016 if (strcmp (decoded_options[j].arg, "-") != 0) 5017 fatal_error (input_location, 5018 "switch %qs does not start with %<-%>", 5019 decoded_options[j].arg); 5020 else 5021 fatal_error (input_location, 5022 "spec-generated switch is just %<-%>"); 5023 break; 5024 5025 case OPT_fcompare_debug_second: 5026 case OPT_fcompare_debug: 5027 case OPT_fcompare_debug_: 5028 case OPT_o: 5029 /* Avoid duplicate processing of some options from 5030 compare-debug specs; just save them here. */ 5031 save_switch (decoded_options[j].canonical_option[0], 5032 (decoded_options[j].canonical_option_num_elements 5033 - 1), 5034 &decoded_options[j].canonical_option[1], false, true); 5035 break; 5036 5037 default: 5038 read_cmdline_option (&global_options, &global_options_set, 5039 decoded_options + j, UNKNOWN_LOCATION, 5040 CL_DRIVER, &handlers, global_dc); 5041 break; 5042 } 5043 } 5044 5045 free (decoded_options); 5046 5047 alloc_switch (); 5048 switches[n_switches].part1 = 0; 5049 } 5050 } 5051 5052 /* Callback for processing %D and %I specs. */ 5053 5054 struct spec_path_info { 5055 const char *option; 5056 const char *append; 5057 size_t append_len; 5058 bool omit_relative; 5059 bool separate_options; 5060 }; 5061 5062 static void * 5063 spec_path (char *path, void *data) 5064 { 5065 struct spec_path_info *info = (struct spec_path_info *) data; 5066 size_t len = 0; 5067 char save = 0; 5068 5069 if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) 5070 return NULL; 5071 5072 if (info->append_len != 0) 5073 { 5074 len = strlen (path); 5075 memcpy (path + len, info->append, info->append_len + 1); 5076 } 5077 5078 if (!is_directory (path, true)) 5079 return NULL; 5080 5081 do_spec_1 (info->option, 1, NULL); 5082 if (info->separate_options) 5083 do_spec_1 (" ", 0, NULL); 5084 5085 if (info->append_len == 0) 5086 { 5087 len = strlen (path); 5088 save = path[len - 1]; 5089 if (IS_DIR_SEPARATOR (path[len - 1])) 5090 path[len - 1] = '\0'; 5091 } 5092 5093 do_spec_1 (path, 1, NULL); 5094 do_spec_1 (" ", 0, NULL); 5095 5096 /* Must not damage the original path. */ 5097 if (info->append_len == 0) 5098 path[len - 1] = save; 5099 5100 return NULL; 5101 } 5102 5103 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the 5104 argument list. */ 5105 5106 static void 5107 create_at_file (char **argv) 5108 { 5109 char *temp_file = make_temp_file (""); 5110 char *at_argument = concat ("@", temp_file, NULL); 5111 FILE *f = fopen (temp_file, "w"); 5112 int status; 5113 5114 if (f == NULL) 5115 fatal_error (input_location, "could not open temporary response file %s", 5116 temp_file); 5117 5118 status = writeargv (argv, f); 5119 5120 if (status) 5121 fatal_error (input_location, 5122 "could not write to temporary response file %s", 5123 temp_file); 5124 5125 status = fclose (f); 5126 5127 if (EOF == status) 5128 fatal_error (input_location, "could not close temporary response file %s", 5129 temp_file); 5130 5131 store_arg (at_argument, 0, 0); 5132 5133 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); 5134 } 5135 5136 /* True if we should compile INFILE. */ 5137 5138 static bool 5139 compile_input_file_p (struct infile *infile) 5140 { 5141 if ((!infile->language) || (infile->language[0] != '*')) 5142 if (infile->incompiler == input_file_compiler) 5143 return true; 5144 return false; 5145 } 5146 5147 /* Process each member of VEC as a spec. */ 5148 5149 static void 5150 do_specs_vec (vec<char_p> vec) 5151 { 5152 unsigned ix; 5153 char *opt; 5154 5155 FOR_EACH_VEC_ELT (vec, ix, opt) 5156 { 5157 do_spec_1 (opt, 1, NULL); 5158 /* Make each accumulated option a separate argument. */ 5159 do_spec_1 (" ", 0, NULL); 5160 } 5161 } 5162 5163 /* Process the sub-spec SPEC as a portion of a larger spec. 5164 This is like processing a whole spec except that we do 5165 not initialize at the beginning and we do not supply a 5166 newline by default at the end. 5167 INSWITCH nonzero means don't process %-sequences in SPEC; 5168 in this case, % is treated as an ordinary character. 5169 This is used while substituting switches. 5170 INSWITCH nonzero also causes SPC not to terminate an argument. 5171 5172 Value is zero unless a line was finished 5173 and the command on that line reported an error. */ 5174 5175 static int 5176 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) 5177 { 5178 const char *p = spec; 5179 int c; 5180 int i; 5181 int value; 5182 5183 /* If it's an empty string argument to a switch, keep it as is. */ 5184 if (inswitch && !*p) 5185 arg_going = 1; 5186 5187 while ((c = *p++)) 5188 /* If substituting a switch, treat all chars like letters. 5189 Otherwise, NL, SPC, TAB and % are special. */ 5190 switch (inswitch ? 'a' : c) 5191 { 5192 case '\n': 5193 end_going_arg (); 5194 5195 if (argbuf.length () > 0 5196 && !strcmp (argbuf.last (), "|")) 5197 { 5198 /* A `|' before the newline means use a pipe here, 5199 but only if -pipe was specified. 5200 Otherwise, execute now and don't pass the `|' as an arg. */ 5201 if (use_pipes) 5202 { 5203 input_from_pipe = 1; 5204 break; 5205 } 5206 else 5207 argbuf.pop (); 5208 } 5209 5210 set_collect_gcc_options (); 5211 5212 if (argbuf.length () > 0) 5213 { 5214 value = execute (); 5215 if (value) 5216 return value; 5217 } 5218 /* Reinitialize for a new command, and for a new argument. */ 5219 clear_args (); 5220 arg_going = 0; 5221 delete_this_arg = 0; 5222 this_is_output_file = 0; 5223 this_is_library_file = 0; 5224 this_is_linker_script = 0; 5225 input_from_pipe = 0; 5226 break; 5227 5228 case '|': 5229 end_going_arg (); 5230 5231 /* Use pipe */ 5232 obstack_1grow (&obstack, c); 5233 arg_going = 1; 5234 break; 5235 5236 case '\t': 5237 case ' ': 5238 end_going_arg (); 5239 5240 /* Reinitialize for a new argument. */ 5241 delete_this_arg = 0; 5242 this_is_output_file = 0; 5243 this_is_library_file = 0; 5244 this_is_linker_script = 0; 5245 break; 5246 5247 case '%': 5248 switch (c = *p++) 5249 { 5250 case 0: 5251 fatal_error (input_location, "spec %qs invalid", spec); 5252 5253 case 'b': 5254 if (save_temps_length) 5255 obstack_grow (&obstack, save_temps_prefix, save_temps_length); 5256 else 5257 obstack_grow (&obstack, input_basename, basename_length); 5258 if (compare_debug < 0) 5259 obstack_grow (&obstack, ".gk", 3); 5260 arg_going = 1; 5261 break; 5262 5263 case 'B': 5264 if (save_temps_length) 5265 obstack_grow (&obstack, save_temps_prefix, save_temps_length); 5266 else 5267 obstack_grow (&obstack, input_basename, suffixed_basename_length); 5268 if (compare_debug < 0) 5269 obstack_grow (&obstack, ".gk", 3); 5270 arg_going = 1; 5271 break; 5272 5273 case 'd': 5274 delete_this_arg = 2; 5275 break; 5276 5277 /* Dump out the directories specified with LIBRARY_PATH, 5278 followed by the absolute directories 5279 that we search for startfiles. */ 5280 case 'D': 5281 { 5282 struct spec_path_info info; 5283 5284 info.option = "-L"; 5285 info.append_len = 0; 5286 #ifdef RELATIVE_PREFIX_NOT_LINKDIR 5287 /* Used on systems which record the specified -L dirs 5288 and use them to search for dynamic linking. 5289 Relative directories always come from -B, 5290 and it is better not to use them for searching 5291 at run time. In particular, stage1 loses. */ 5292 info.omit_relative = true; 5293 #else 5294 info.omit_relative = false; 5295 #endif 5296 info.separate_options = false; 5297 5298 for_each_path (&startfile_prefixes, true, 0, spec_path, &info); 5299 } 5300 break; 5301 5302 case 'e': 5303 /* %efoo means report an error with `foo' as error message 5304 and don't execute any more commands for this file. */ 5305 { 5306 const char *q = p; 5307 char *buf; 5308 while (*p != 0 && *p != '\n') 5309 p++; 5310 buf = (char *) alloca (p - q + 1); 5311 strncpy (buf, q, p - q); 5312 buf[p - q] = 0; 5313 error ("%s", _(buf)); 5314 return -1; 5315 } 5316 break; 5317 case 'n': 5318 /* %nfoo means report a notice with `foo' on stderr. */ 5319 { 5320 const char *q = p; 5321 char *buf; 5322 while (*p != 0 && *p != '\n') 5323 p++; 5324 buf = (char *) alloca (p - q + 1); 5325 strncpy (buf, q, p - q); 5326 buf[p - q] = 0; 5327 inform (UNKNOWN_LOCATION, "%s", _(buf)); 5328 if (*p) 5329 p++; 5330 } 5331 break; 5332 5333 case 'j': 5334 { 5335 struct stat st; 5336 5337 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is 5338 defined, and it is not a directory, and it is 5339 writable, use it. Otherwise, treat this like any 5340 other temporary file. */ 5341 5342 if ((!save_temps_flag) 5343 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) 5344 && (access (HOST_BIT_BUCKET, W_OK) == 0)) 5345 { 5346 obstack_grow (&obstack, HOST_BIT_BUCKET, 5347 strlen (HOST_BIT_BUCKET)); 5348 delete_this_arg = 0; 5349 arg_going = 1; 5350 break; 5351 } 5352 } 5353 goto create_temp_file; 5354 case '|': 5355 if (use_pipes) 5356 { 5357 obstack_1grow (&obstack, '-'); 5358 delete_this_arg = 0; 5359 arg_going = 1; 5360 5361 /* consume suffix */ 5362 while (*p == '.' || ISALNUM ((unsigned char) *p)) 5363 p++; 5364 if (p[0] == '%' && p[1] == 'O') 5365 p += 2; 5366 5367 break; 5368 } 5369 goto create_temp_file; 5370 case 'm': 5371 if (use_pipes) 5372 { 5373 /* consume suffix */ 5374 while (*p == '.' || ISALNUM ((unsigned char) *p)) 5375 p++; 5376 if (p[0] == '%' && p[1] == 'O') 5377 p += 2; 5378 5379 break; 5380 } 5381 goto create_temp_file; 5382 case 'g': 5383 case 'u': 5384 case 'U': 5385 create_temp_file: 5386 { 5387 struct temp_name *t; 5388 int suffix_length; 5389 const char *suffix = p; 5390 char *saved_suffix = NULL; 5391 5392 while (*p == '.' || ISALNUM ((unsigned char) *p)) 5393 p++; 5394 suffix_length = p - suffix; 5395 if (p[0] == '%' && p[1] == 'O') 5396 { 5397 p += 2; 5398 /* We don't support extra suffix characters after %O. */ 5399 if (*p == '.' || ISALNUM ((unsigned char) *p)) 5400 fatal_error (input_location, 5401 "spec %qs has invalid %<%%0%c%>", spec, *p); 5402 if (suffix_length == 0) 5403 suffix = TARGET_OBJECT_SUFFIX; 5404 else 5405 { 5406 saved_suffix 5407 = XNEWVEC (char, suffix_length 5408 + strlen (TARGET_OBJECT_SUFFIX) + 1); 5409 strncpy (saved_suffix, suffix, suffix_length); 5410 strcpy (saved_suffix + suffix_length, 5411 TARGET_OBJECT_SUFFIX); 5412 } 5413 suffix_length += strlen (TARGET_OBJECT_SUFFIX); 5414 } 5415 5416 if (compare_debug < 0) 5417 { 5418 suffix = concat (".gk", suffix, NULL); 5419 suffix_length += 3; 5420 } 5421 5422 /* If -save-temps=obj and -o were specified, use that for the 5423 temp file. */ 5424 if (save_temps_length) 5425 { 5426 char *tmp; 5427 temp_filename_length 5428 = save_temps_length + suffix_length + 1; 5429 tmp = (char *) alloca (temp_filename_length); 5430 memcpy (tmp, save_temps_prefix, save_temps_length); 5431 memcpy (tmp + save_temps_length, suffix, suffix_length); 5432 tmp[save_temps_length + suffix_length] = '\0'; 5433 temp_filename = save_string (tmp, save_temps_length 5434 + suffix_length); 5435 obstack_grow (&obstack, temp_filename, 5436 temp_filename_length); 5437 arg_going = 1; 5438 delete_this_arg = 0; 5439 break; 5440 } 5441 5442 /* If the gcc_input_filename has the same suffix specified 5443 for the %g, %u, or %U, and -save-temps is specified, 5444 we could end up using that file as an intermediate 5445 thus clobbering the user's source file (.e.g., 5446 gcc -save-temps foo.s would clobber foo.s with the 5447 output of cpp0). So check for this condition and 5448 generate a temp file as the intermediate. */ 5449 5450 if (save_temps_flag) 5451 { 5452 char *tmp; 5453 temp_filename_length = basename_length + suffix_length + 1; 5454 tmp = (char *) alloca (temp_filename_length); 5455 memcpy (tmp, input_basename, basename_length); 5456 memcpy (tmp + basename_length, suffix, suffix_length); 5457 tmp[basename_length + suffix_length] = '\0'; 5458 temp_filename = tmp; 5459 5460 if (filename_cmp (temp_filename, gcc_input_filename) != 0) 5461 { 5462 #ifndef HOST_LACKS_INODE_NUMBERS 5463 struct stat st_temp; 5464 5465 /* Note, set_input() resets input_stat_set to 0. */ 5466 if (input_stat_set == 0) 5467 { 5468 input_stat_set = stat (gcc_input_filename, 5469 &input_stat); 5470 if (input_stat_set >= 0) 5471 input_stat_set = 1; 5472 } 5473 5474 /* If we have the stat for the gcc_input_filename 5475 and we can do the stat for the temp_filename 5476 then the they could still refer to the same 5477 file if st_dev/st_ino's are the same. */ 5478 if (input_stat_set != 1 5479 || stat (temp_filename, &st_temp) < 0 5480 || input_stat.st_dev != st_temp.st_dev 5481 || input_stat.st_ino != st_temp.st_ino) 5482 #else 5483 /* Just compare canonical pathnames. */ 5484 char* input_realname = lrealpath (gcc_input_filename); 5485 char* temp_realname = lrealpath (temp_filename); 5486 bool files_differ = filename_cmp (input_realname, temp_realname); 5487 free (input_realname); 5488 free (temp_realname); 5489 if (files_differ) 5490 #endif 5491 { 5492 temp_filename 5493 = save_string (temp_filename, 5494 temp_filename_length - 1); 5495 obstack_grow (&obstack, temp_filename, 5496 temp_filename_length); 5497 arg_going = 1; 5498 delete_this_arg = 0; 5499 break; 5500 } 5501 } 5502 } 5503 5504 /* See if we already have an association of %g/%u/%U and 5505 suffix. */ 5506 for (t = temp_names; t; t = t->next) 5507 if (t->length == suffix_length 5508 && strncmp (t->suffix, suffix, suffix_length) == 0 5509 && t->unique == (c == 'u' || c == 'U' || c == 'j')) 5510 break; 5511 5512 /* Make a new association if needed. %u and %j 5513 require one. */ 5514 if (t == 0 || c == 'u' || c == 'j') 5515 { 5516 if (t == 0) 5517 { 5518 t = XNEW (struct temp_name); 5519 t->next = temp_names; 5520 temp_names = t; 5521 } 5522 t->length = suffix_length; 5523 if (saved_suffix) 5524 { 5525 t->suffix = saved_suffix; 5526 saved_suffix = NULL; 5527 } 5528 else 5529 t->suffix = save_string (suffix, suffix_length); 5530 t->unique = (c == 'u' || c == 'U' || c == 'j'); 5531 temp_filename = make_temp_file (t->suffix); 5532 temp_filename_length = strlen (temp_filename); 5533 t->filename = temp_filename; 5534 t->filename_length = temp_filename_length; 5535 } 5536 5537 free (saved_suffix); 5538 5539 obstack_grow (&obstack, t->filename, t->filename_length); 5540 delete_this_arg = 1; 5541 } 5542 arg_going = 1; 5543 break; 5544 5545 case 'i': 5546 if (combine_inputs) 5547 { 5548 if (at_file_supplied) 5549 { 5550 /* We are going to expand `%i' to `@FILE', where FILE 5551 is a newly-created temporary filename. The filenames 5552 that would usually be expanded in place of %o will be 5553 written to the temporary file. */ 5554 char **argv; 5555 int n_files = 0; 5556 int j; 5557 5558 for (i = 0; i < n_infiles; i++) 5559 if (compile_input_file_p (&infiles[i])) 5560 n_files++; 5561 5562 argv = (char **) alloca (sizeof (char *) * (n_files + 1)); 5563 5564 /* Copy the strings over. */ 5565 for (i = 0, j = 0; i < n_infiles; i++) 5566 if (compile_input_file_p (&infiles[i])) 5567 { 5568 argv[j] = CONST_CAST (char *, infiles[i].name); 5569 infiles[i].compiled = true; 5570 j++; 5571 } 5572 argv[j] = NULL; 5573 5574 create_at_file (argv); 5575 } 5576 else 5577 for (i = 0; (int) i < n_infiles; i++) 5578 if (compile_input_file_p (&infiles[i])) 5579 { 5580 store_arg (infiles[i].name, 0, 0); 5581 infiles[i].compiled = true; 5582 } 5583 } 5584 else 5585 { 5586 obstack_grow (&obstack, gcc_input_filename, 5587 input_filename_length); 5588 arg_going = 1; 5589 } 5590 break; 5591 5592 case 'I': 5593 { 5594 struct spec_path_info info; 5595 5596 if (multilib_dir) 5597 { 5598 do_spec_1 ("-imultilib", 1, NULL); 5599 /* Make this a separate argument. */ 5600 do_spec_1 (" ", 0, NULL); 5601 do_spec_1 (multilib_dir, 1, NULL); 5602 do_spec_1 (" ", 0, NULL); 5603 } 5604 5605 if (multiarch_dir) 5606 { 5607 do_spec_1 ("-imultiarch", 1, NULL); 5608 /* Make this a separate argument. */ 5609 do_spec_1 (" ", 0, NULL); 5610 do_spec_1 (multiarch_dir, 1, NULL); 5611 do_spec_1 (" ", 0, NULL); 5612 } 5613 5614 if (gcc_exec_prefix) 5615 { 5616 do_spec_1 ("-iprefix", 1, NULL); 5617 /* Make this a separate argument. */ 5618 do_spec_1 (" ", 0, NULL); 5619 do_spec_1 (gcc_exec_prefix, 1, NULL); 5620 do_spec_1 (" ", 0, NULL); 5621 } 5622 5623 if (target_system_root_changed || 5624 (target_system_root && target_sysroot_hdrs_suffix)) 5625 { 5626 do_spec_1 ("-isysroot", 1, NULL); 5627 /* Make this a separate argument. */ 5628 do_spec_1 (" ", 0, NULL); 5629 do_spec_1 (target_system_root, 1, NULL); 5630 if (target_sysroot_hdrs_suffix) 5631 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); 5632 do_spec_1 (" ", 0, NULL); 5633 } 5634 5635 info.option = "-isystem"; 5636 info.append = "include"; 5637 info.append_len = strlen (info.append); 5638 info.omit_relative = false; 5639 info.separate_options = true; 5640 5641 for_each_path (&include_prefixes, false, info.append_len, 5642 spec_path, &info); 5643 5644 info.append = "include-fixed"; 5645 if (*sysroot_hdrs_suffix_spec) 5646 info.append = concat (info.append, dir_separator_str, 5647 multilib_dir, NULL); 5648 info.append_len = strlen (info.append); 5649 for_each_path (&include_prefixes, false, info.append_len, 5650 spec_path, &info); 5651 } 5652 break; 5653 5654 case 'o': 5655 { 5656 int max = n_infiles; 5657 max += lang_specific_extra_outfiles; 5658 5659 if (HAVE_GNU_LD && at_file_supplied) 5660 { 5661 /* We are going to expand `%o' to `@FILE', where FILE 5662 is a newly-created temporary filename. The filenames 5663 that would usually be expanded in place of %o will be 5664 written to the temporary file. */ 5665 5666 char **argv; 5667 int n_files, j; 5668 5669 /* Convert OUTFILES into a form suitable for writeargv. */ 5670 5671 /* Determine how many are non-NULL. */ 5672 for (n_files = 0, i = 0; i < max; i++) 5673 n_files += outfiles[i] != NULL; 5674 5675 argv = (char **) alloca (sizeof (char *) * (n_files + 1)); 5676 5677 /* Copy the strings over. */ 5678 for (i = 0, j = 0; i < max; i++) 5679 if (outfiles[i]) 5680 { 5681 argv[j] = CONST_CAST (char *, outfiles[i]); 5682 j++; 5683 } 5684 argv[j] = NULL; 5685 5686 create_at_file (argv); 5687 } 5688 else 5689 for (i = 0; i < max; i++) 5690 if (outfiles[i]) 5691 store_arg (outfiles[i], 0, 0); 5692 break; 5693 } 5694 5695 case 'O': 5696 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 5697 arg_going = 1; 5698 break; 5699 5700 case 's': 5701 this_is_library_file = 1; 5702 break; 5703 5704 case 'T': 5705 this_is_linker_script = 1; 5706 break; 5707 5708 case 'V': 5709 outfiles[input_file_number] = NULL; 5710 break; 5711 5712 case 'w': 5713 this_is_output_file = 1; 5714 break; 5715 5716 case 'W': 5717 { 5718 unsigned int cur_index = argbuf.length (); 5719 /* Handle the {...} following the %W. */ 5720 if (*p != '{') 5721 fatal_error (input_location, 5722 "spec %qs has invalid %<%%W%c%>", spec, *p); 5723 p = handle_braces (p + 1); 5724 if (p == 0) 5725 return -1; 5726 end_going_arg (); 5727 /* If any args were output, mark the last one for deletion 5728 on failure. */ 5729 if (argbuf.length () != cur_index) 5730 record_temp_file (argbuf.last (), 0, 1); 5731 break; 5732 } 5733 5734 /* %x{OPTION} records OPTION for %X to output. */ 5735 case 'x': 5736 { 5737 const char *p1 = p; 5738 char *string; 5739 char *opt; 5740 unsigned ix; 5741 5742 /* Skip past the option value and make a copy. */ 5743 if (*p != '{') 5744 fatal_error (input_location, 5745 "spec %qs has invalid %<%%x%c%>", spec, *p); 5746 while (*p++ != '}') 5747 ; 5748 string = save_string (p1 + 1, p - p1 - 2); 5749 5750 /* See if we already recorded this option. */ 5751 FOR_EACH_VEC_ELT (linker_options, ix, opt) 5752 if (! strcmp (string, opt)) 5753 { 5754 free (string); 5755 return 0; 5756 } 5757 5758 /* This option is new; add it. */ 5759 add_linker_option (string, strlen (string)); 5760 free (string); 5761 } 5762 break; 5763 5764 /* Dump out the options accumulated previously using %x. */ 5765 case 'X': 5766 do_specs_vec (linker_options); 5767 break; 5768 5769 /* Dump out the options accumulated previously using -Wa,. */ 5770 case 'Y': 5771 do_specs_vec (assembler_options); 5772 break; 5773 5774 /* Dump out the options accumulated previously using -Wp,. */ 5775 case 'Z': 5776 do_specs_vec (preprocessor_options); 5777 break; 5778 5779 /* Here are digits and numbers that just process 5780 a certain constant string as a spec. */ 5781 5782 case '1': 5783 value = do_spec_1 (cc1_spec, 0, NULL); 5784 if (value != 0) 5785 return value; 5786 break; 5787 5788 case '2': 5789 value = do_spec_1 (cc1plus_spec, 0, NULL); 5790 if (value != 0) 5791 return value; 5792 break; 5793 5794 case 'a': 5795 value = do_spec_1 (asm_spec, 0, NULL); 5796 if (value != 0) 5797 return value; 5798 break; 5799 5800 case 'A': 5801 value = do_spec_1 (asm_final_spec, 0, NULL); 5802 if (value != 0) 5803 return value; 5804 break; 5805 5806 case 'C': 5807 { 5808 const char *const spec 5809 = (input_file_compiler->cpp_spec 5810 ? input_file_compiler->cpp_spec 5811 : cpp_spec); 5812 value = do_spec_1 (spec, 0, NULL); 5813 if (value != 0) 5814 return value; 5815 } 5816 break; 5817 5818 case 'E': 5819 value = do_spec_1 (endfile_spec, 0, NULL); 5820 if (value != 0) 5821 return value; 5822 break; 5823 5824 case 'l': 5825 value = do_spec_1 (link_spec, 0, NULL); 5826 if (value != 0) 5827 return value; 5828 break; 5829 5830 case 'L': 5831 value = do_spec_1 (lib_spec, 0, NULL); 5832 if (value != 0) 5833 return value; 5834 break; 5835 5836 case 'M': 5837 if (multilib_os_dir == NULL) 5838 obstack_1grow (&obstack, '.'); 5839 else 5840 obstack_grow (&obstack, multilib_os_dir, 5841 strlen (multilib_os_dir)); 5842 break; 5843 5844 case 'G': 5845 value = do_spec_1 (libgcc_spec, 0, NULL); 5846 if (value != 0) 5847 return value; 5848 break; 5849 5850 case 'R': 5851 /* We assume there is a directory 5852 separator at the end of this string. */ 5853 if (target_system_root) 5854 { 5855 obstack_grow (&obstack, target_system_root, 5856 strlen (target_system_root)); 5857 if (target_sysroot_suffix) 5858 obstack_grow (&obstack, target_sysroot_suffix, 5859 strlen (target_sysroot_suffix)); 5860 } 5861 break; 5862 5863 case 'S': 5864 value = do_spec_1 (startfile_spec, 0, NULL); 5865 if (value != 0) 5866 return value; 5867 break; 5868 5869 /* Here we define characters other than letters and digits. */ 5870 5871 case '{': 5872 p = handle_braces (p); 5873 if (p == 0) 5874 return -1; 5875 break; 5876 5877 case ':': 5878 p = handle_spec_function (p, NULL); 5879 if (p == 0) 5880 return -1; 5881 break; 5882 5883 case '%': 5884 obstack_1grow (&obstack, '%'); 5885 break; 5886 5887 case '.': 5888 { 5889 unsigned len = 0; 5890 5891 while (p[len] && p[len] != ' ' && p[len] != '%') 5892 len++; 5893 suffix_subst = save_string (p - 1, len + 1); 5894 p += len; 5895 } 5896 break; 5897 5898 /* Henceforth ignore the option(s) matching the pattern 5899 after the %<. */ 5900 case '<': 5901 case '>': 5902 { 5903 unsigned len = 0; 5904 int have_wildcard = 0; 5905 int i; 5906 int switch_option; 5907 5908 if (c == '>') 5909 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; 5910 else 5911 switch_option = SWITCH_IGNORE; 5912 5913 while (p[len] && p[len] != ' ' && p[len] != '\t') 5914 len++; 5915 5916 if (p[len-1] == '*') 5917 have_wildcard = 1; 5918 5919 for (i = 0; i < n_switches; i++) 5920 if (!strncmp (switches[i].part1, p, len - have_wildcard) 5921 && (have_wildcard || switches[i].part1[len] == '\0')) 5922 { 5923 switches[i].live_cond |= switch_option; 5924 /* User switch be validated from validate_all_switches. 5925 when the definition is seen from the spec file. 5926 If not defined anywhere, will be rejected. */ 5927 if (switches[i].known) 5928 switches[i].validated = true; 5929 } 5930 5931 p += len; 5932 } 5933 break; 5934 5935 case '*': 5936 if (soft_matched_part) 5937 { 5938 if (soft_matched_part[0]) 5939 do_spec_1 (soft_matched_part, 1, NULL); 5940 /* Only insert a space after the substitution if it is at the 5941 end of the current sequence. So if: 5942 5943 "%{foo=*:bar%*}%{foo=*:one%*two}" 5944 5945 matches -foo=hello then it will produce: 5946 5947 barhello onehellotwo 5948 */ 5949 if (*p == 0 || *p == '}') 5950 do_spec_1 (" ", 0, NULL); 5951 } 5952 else 5953 /* Catch the case where a spec string contains something like 5954 '%{foo:%*}'. i.e. there is no * in the pattern on the left 5955 hand side of the :. */ 5956 error ("spec failure: %<%%*%> has not been initialized by pattern match"); 5957 break; 5958 5959 /* Process a string found as the value of a spec given by name. 5960 This feature allows individual machine descriptions 5961 to add and use their own specs. */ 5962 case '(': 5963 { 5964 const char *name = p; 5965 struct spec_list *sl; 5966 int len; 5967 5968 /* The string after the S/P is the name of a spec that is to be 5969 processed. */ 5970 while (*p && *p != ')') 5971 p++; 5972 5973 /* See if it's in the list. */ 5974 for (len = p - name, sl = specs; sl; sl = sl->next) 5975 if (sl->name_len == len && !strncmp (sl->name, name, len)) 5976 { 5977 name = *(sl->ptr_spec); 5978 #ifdef DEBUG_SPECS 5979 fnotice (stderr, "Processing spec (%s), which is '%s'\n", 5980 sl->name, name); 5981 #endif 5982 break; 5983 } 5984 5985 if (sl) 5986 { 5987 value = do_spec_1 (name, 0, NULL); 5988 if (value != 0) 5989 return value; 5990 } 5991 5992 /* Discard the closing paren. */ 5993 if (*p) 5994 p++; 5995 } 5996 break; 5997 5998 default: 5999 error ("spec failure: unrecognized spec option %qc", c); 6000 break; 6001 } 6002 break; 6003 6004 case '\\': 6005 /* Backslash: treat next character as ordinary. */ 6006 c = *p++; 6007 6008 /* Fall through. */ 6009 default: 6010 /* Ordinary character: put it into the current argument. */ 6011 obstack_1grow (&obstack, c); 6012 arg_going = 1; 6013 } 6014 6015 /* End of string. If we are processing a spec function, we need to 6016 end any pending argument. */ 6017 if (processing_spec_function) 6018 end_going_arg (); 6019 6020 return 0; 6021 } 6022 6023 /* Look up a spec function. */ 6024 6025 static const struct spec_function * 6026 lookup_spec_function (const char *name) 6027 { 6028 const struct spec_function *sf; 6029 6030 for (sf = static_spec_functions; sf->name != NULL; sf++) 6031 if (strcmp (sf->name, name) == 0) 6032 return sf; 6033 6034 return NULL; 6035 } 6036 6037 /* Evaluate a spec function. */ 6038 6039 static const char * 6040 eval_spec_function (const char *func, const char *args) 6041 { 6042 const struct spec_function *sf; 6043 const char *funcval; 6044 6045 /* Saved spec processing context. */ 6046 vec<const_char_p> save_argbuf; 6047 6048 int save_arg_going; 6049 int save_delete_this_arg; 6050 int save_this_is_output_file; 6051 int save_this_is_library_file; 6052 int save_input_from_pipe; 6053 int save_this_is_linker_script; 6054 const char *save_suffix_subst; 6055 6056 int save_growing_size; 6057 void *save_growing_value = NULL; 6058 6059 sf = lookup_spec_function (func); 6060 if (sf == NULL) 6061 fatal_error (input_location, "unknown spec function %qs", func); 6062 6063 /* Push the spec processing context. */ 6064 save_argbuf = argbuf; 6065 6066 save_arg_going = arg_going; 6067 save_delete_this_arg = delete_this_arg; 6068 save_this_is_output_file = this_is_output_file; 6069 save_this_is_library_file = this_is_library_file; 6070 save_this_is_linker_script = this_is_linker_script; 6071 save_input_from_pipe = input_from_pipe; 6072 save_suffix_subst = suffix_subst; 6073 6074 /* If we have some object growing now, finalize it so the args and function 6075 eval proceed from a cleared context. This is needed to prevent the first 6076 constructed arg from mistakenly including the growing value. We'll push 6077 this value back on the obstack once the function evaluation is done, to 6078 restore a consistent processing context for our caller. This is fine as 6079 the address of growing objects isn't guaranteed to remain stable until 6080 they are finalized, and we expect this situation to be rare enough for 6081 the extra copy not to be an issue. */ 6082 save_growing_size = obstack_object_size (&obstack); 6083 if (save_growing_size > 0) 6084 save_growing_value = obstack_finish (&obstack); 6085 6086 /* Create a new spec processing context, and build the function 6087 arguments. */ 6088 6089 alloc_args (); 6090 if (do_spec_2 (args) < 0) 6091 fatal_error (input_location, "error in args to spec function %qs", func); 6092 6093 /* argbuf_index is an index for the next argument to be inserted, and 6094 so contains the count of the args already inserted. */ 6095 6096 funcval = (*sf->func) (argbuf.length (), 6097 argbuf.address ()); 6098 6099 /* Pop the spec processing context. */ 6100 argbuf.release (); 6101 argbuf = save_argbuf; 6102 6103 arg_going = save_arg_going; 6104 delete_this_arg = save_delete_this_arg; 6105 this_is_output_file = save_this_is_output_file; 6106 this_is_library_file = save_this_is_library_file; 6107 this_is_linker_script = save_this_is_linker_script; 6108 input_from_pipe = save_input_from_pipe; 6109 suffix_subst = save_suffix_subst; 6110 6111 if (save_growing_size > 0) 6112 obstack_grow (&obstack, save_growing_value, save_growing_size); 6113 6114 return funcval; 6115 } 6116 6117 /* Handle a spec function call of the form: 6118 6119 %:function(args) 6120 6121 ARGS is processed as a spec in a separate context and split into an 6122 argument vector in the normal fashion. The function returns a string 6123 containing a spec which we then process in the caller's context, or 6124 NULL if no processing is required. 6125 6126 If RETVAL_NONNULL is not NULL, then store a bool whether function 6127 returned non-NULL. */ 6128 6129 static const char * 6130 handle_spec_function (const char *p, bool *retval_nonnull) 6131 { 6132 char *func, *args; 6133 const char *endp, *funcval; 6134 int count; 6135 6136 processing_spec_function++; 6137 6138 /* Get the function name. */ 6139 for (endp = p; *endp != '\0'; endp++) 6140 { 6141 if (*endp == '(') /* ) */ 6142 break; 6143 /* Only allow [A-Za-z0-9], -, and _ in function names. */ 6144 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) 6145 fatal_error (input_location, "malformed spec function name"); 6146 } 6147 if (*endp != '(') /* ) */ 6148 fatal_error (input_location, "no arguments for spec function"); 6149 func = save_string (p, endp - p); 6150 p = ++endp; 6151 6152 /* Get the arguments. */ 6153 for (count = 0; *endp != '\0'; endp++) 6154 { 6155 /* ( */ 6156 if (*endp == ')') 6157 { 6158 if (count == 0) 6159 break; 6160 count--; 6161 } 6162 else if (*endp == '(') /* ) */ 6163 count++; 6164 } 6165 /* ( */ 6166 if (*endp != ')') 6167 fatal_error (input_location, "malformed spec function arguments"); 6168 args = save_string (p, endp - p); 6169 p = ++endp; 6170 6171 /* p now points to just past the end of the spec function expression. */ 6172 6173 funcval = eval_spec_function (func, args); 6174 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) 6175 p = NULL; 6176 if (retval_nonnull) 6177 *retval_nonnull = funcval != NULL; 6178 6179 free (func); 6180 free (args); 6181 6182 processing_spec_function--; 6183 6184 return p; 6185 } 6186 6187 /* Inline subroutine of handle_braces. Returns true if the current 6188 input suffix matches the atom bracketed by ATOM and END_ATOM. */ 6189 static inline bool 6190 input_suffix_matches (const char *atom, const char *end_atom) 6191 { 6192 return (input_suffix 6193 && !strncmp (input_suffix, atom, end_atom - atom) 6194 && input_suffix[end_atom - atom] == '\0'); 6195 } 6196 6197 /* Subroutine of handle_braces. Returns true if the current 6198 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */ 6199 static bool 6200 input_spec_matches (const char *atom, const char *end_atom) 6201 { 6202 return (input_file_compiler 6203 && input_file_compiler->suffix 6204 && input_file_compiler->suffix[0] != '\0' 6205 && !strncmp (input_file_compiler->suffix + 1, atom, 6206 end_atom - atom) 6207 && input_file_compiler->suffix[end_atom - atom + 1] == '\0'); 6208 } 6209 6210 /* Subroutine of handle_braces. Returns true if a switch 6211 matching the atom bracketed by ATOM and END_ATOM appeared on the 6212 command line. */ 6213 static bool 6214 switch_matches (const char *atom, const char *end_atom, int starred) 6215 { 6216 int i; 6217 int len = end_atom - atom; 6218 int plen = starred ? len : -1; 6219 6220 for (i = 0; i < n_switches; i++) 6221 if (!strncmp (switches[i].part1, atom, len) 6222 && (starred || switches[i].part1[len] == '\0') 6223 && check_live_switch (i, plen)) 6224 return true; 6225 6226 /* Check if a switch with separated form matching the atom. 6227 We check -D and -U switches. */ 6228 else if (switches[i].args != 0) 6229 { 6230 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U') 6231 && *switches[i].part1 == atom[0]) 6232 { 6233 if (!strncmp (switches[i].args[0], &atom[1], len - 1) 6234 && (starred || (switches[i].part1[1] == '\0' 6235 && switches[i].args[0][len - 1] == '\0')) 6236 && check_live_switch (i, (starred ? 1 : -1))) 6237 return true; 6238 } 6239 } 6240 6241 return false; 6242 } 6243 6244 /* Inline subroutine of handle_braces. Mark all of the switches which 6245 match ATOM (extends to END_ATOM; STARRED indicates whether there 6246 was a star after the atom) for later processing. */ 6247 static inline void 6248 mark_matching_switches (const char *atom, const char *end_atom, int starred) 6249 { 6250 int i; 6251 int len = end_atom - atom; 6252 int plen = starred ? len : -1; 6253 6254 for (i = 0; i < n_switches; i++) 6255 if (!strncmp (switches[i].part1, atom, len) 6256 && (starred || switches[i].part1[len] == '\0') 6257 && check_live_switch (i, plen)) 6258 switches[i].ordering = 1; 6259 } 6260 6261 /* Inline subroutine of handle_braces. Process all the currently 6262 marked switches through give_switch, and clear the marks. */ 6263 static inline void 6264 process_marked_switches (void) 6265 { 6266 int i; 6267 6268 for (i = 0; i < n_switches; i++) 6269 if (switches[i].ordering == 1) 6270 { 6271 switches[i].ordering = 0; 6272 give_switch (i, 0); 6273 } 6274 } 6275 6276 /* Handle a %{ ... } construct. P points just inside the leading {. 6277 Returns a pointer one past the end of the brace block, or 0 6278 if we call do_spec_1 and that returns -1. */ 6279 6280 static const char * 6281 handle_braces (const char *p) 6282 { 6283 const char *atom, *end_atom; 6284 const char *d_atom = NULL, *d_end_atom = NULL; 6285 char *esc_buf = NULL, *d_esc_buf = NULL; 6286 int esc; 6287 const char *orig = p; 6288 6289 bool a_is_suffix; 6290 bool a_is_spectype; 6291 bool a_is_starred; 6292 bool a_is_negated; 6293 bool a_matched; 6294 6295 bool a_must_be_last = false; 6296 bool ordered_set = false; 6297 bool disjunct_set = false; 6298 bool disj_matched = false; 6299 bool disj_starred = true; 6300 bool n_way_choice = false; 6301 bool n_way_matched = false; 6302 6303 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 6304 6305 do 6306 { 6307 if (a_must_be_last) 6308 goto invalid; 6309 6310 /* Scan one "atom" (S in the description above of %{}, possibly 6311 with '!', '.', '@', ',', or '*' modifiers). */ 6312 a_matched = false; 6313 a_is_suffix = false; 6314 a_is_starred = false; 6315 a_is_negated = false; 6316 a_is_spectype = false; 6317 6318 SKIP_WHITE (); 6319 if (*p == '!') 6320 p++, a_is_negated = true; 6321 6322 SKIP_WHITE (); 6323 if (*p == '%' && p[1] == ':') 6324 { 6325 atom = NULL; 6326 end_atom = NULL; 6327 p = handle_spec_function (p + 2, &a_matched); 6328 } 6329 else 6330 { 6331 if (*p == '.') 6332 p++, a_is_suffix = true; 6333 else if (*p == ',') 6334 p++, a_is_spectype = true; 6335 6336 atom = p; 6337 esc = 0; 6338 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' 6339 || *p == ',' || *p == '.' || *p == '@' || *p == '\\') 6340 { 6341 if (*p == '\\') 6342 { 6343 p++; 6344 if (!*p) 6345 fatal_error (input_location, 6346 "braced spec %qs ends in escape", orig); 6347 esc++; 6348 } 6349 p++; 6350 } 6351 end_atom = p; 6352 6353 if (esc) 6354 { 6355 const char *ap; 6356 char *ep; 6357 6358 if (esc_buf && esc_buf != d_esc_buf) 6359 free (esc_buf); 6360 esc_buf = NULL; 6361 ep = esc_buf = (char *) xmalloc (end_atom - atom - esc + 1); 6362 for (ap = atom; ap != end_atom; ap++, ep++) 6363 { 6364 if (*ap == '\\') 6365 ap++; 6366 *ep = *ap; 6367 } 6368 *ep = '\0'; 6369 atom = esc_buf; 6370 end_atom = ep; 6371 } 6372 6373 if (*p == '*') 6374 p++, a_is_starred = 1; 6375 } 6376 6377 SKIP_WHITE (); 6378 switch (*p) 6379 { 6380 case '&': case '}': 6381 /* Substitute the switch(es) indicated by the current atom. */ 6382 ordered_set = true; 6383 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix 6384 || a_is_spectype || atom == end_atom) 6385 goto invalid; 6386 6387 mark_matching_switches (atom, end_atom, a_is_starred); 6388 6389 if (*p == '}') 6390 process_marked_switches (); 6391 break; 6392 6393 case '|': case ':': 6394 /* Substitute some text if the current atom appears as a switch 6395 or suffix. */ 6396 disjunct_set = true; 6397 if (ordered_set) 6398 goto invalid; 6399 6400 if (atom && atom == end_atom) 6401 { 6402 if (!n_way_choice || disj_matched || *p == '|' 6403 || a_is_negated || a_is_suffix || a_is_spectype 6404 || a_is_starred) 6405 goto invalid; 6406 6407 /* An empty term may appear as the last choice of an 6408 N-way choice set; it means "otherwise". */ 6409 a_must_be_last = true; 6410 disj_matched = !n_way_matched; 6411 disj_starred = false; 6412 } 6413 else 6414 { 6415 if ((a_is_suffix || a_is_spectype) && a_is_starred) 6416 goto invalid; 6417 6418 if (!a_is_starred) 6419 disj_starred = false; 6420 6421 /* Don't bother testing this atom if we already have a 6422 match. */ 6423 if (!disj_matched && !n_way_matched) 6424 { 6425 if (atom == NULL) 6426 /* a_matched is already set by handle_spec_function. */; 6427 else if (a_is_suffix) 6428 a_matched = input_suffix_matches (atom, end_atom); 6429 else if (a_is_spectype) 6430 a_matched = input_spec_matches (atom, end_atom); 6431 else 6432 a_matched = switch_matches (atom, end_atom, a_is_starred); 6433 6434 if (a_matched != a_is_negated) 6435 { 6436 disj_matched = true; 6437 d_atom = atom; 6438 d_end_atom = end_atom; 6439 d_esc_buf = esc_buf; 6440 } 6441 } 6442 } 6443 6444 if (*p == ':') 6445 { 6446 /* Found the body, that is, the text to substitute if the 6447 current disjunction matches. */ 6448 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, 6449 disj_matched && !n_way_matched); 6450 if (p == 0) 6451 goto done; 6452 6453 /* If we have an N-way choice, reset state for the next 6454 disjunction. */ 6455 if (*p == ';') 6456 { 6457 n_way_choice = true; 6458 n_way_matched |= disj_matched; 6459 disj_matched = false; 6460 disj_starred = true; 6461 d_atom = d_end_atom = NULL; 6462 } 6463 } 6464 break; 6465 6466 default: 6467 goto invalid; 6468 } 6469 } 6470 while (*p++ != '}'); 6471 6472 done: 6473 if (d_esc_buf && d_esc_buf != esc_buf) 6474 free (d_esc_buf); 6475 if (esc_buf) 6476 free (esc_buf); 6477 6478 return p; 6479 6480 invalid: 6481 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p); 6482 6483 #undef SKIP_WHITE 6484 } 6485 6486 /* Subroutine of handle_braces. Scan and process a brace substitution body 6487 (X in the description of %{} syntax). P points one past the colon; 6488 ATOM and END_ATOM bracket the first atom which was found to be true 6489 (present) in the current disjunction; STARRED indicates whether all 6490 the atoms in the current disjunction were starred (for syntax validation); 6491 MATCHED indicates whether the disjunction matched or not, and therefore 6492 whether or not the body is to be processed through do_spec_1 or just 6493 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 6494 returns -1. */ 6495 6496 static const char * 6497 process_brace_body (const char *p, const char *atom, const char *end_atom, 6498 int starred, int matched) 6499 { 6500 const char *body, *end_body; 6501 unsigned int nesting_level; 6502 bool have_subst = false; 6503 6504 /* Locate the closing } or ;, honoring nested braces. 6505 Trim trailing whitespace. */ 6506 body = p; 6507 nesting_level = 1; 6508 for (;;) 6509 { 6510 if (*p == '{') 6511 nesting_level++; 6512 else if (*p == '}') 6513 { 6514 if (!--nesting_level) 6515 break; 6516 } 6517 else if (*p == ';' && nesting_level == 1) 6518 break; 6519 else if (*p == '%' && p[1] == '*' && nesting_level == 1) 6520 have_subst = true; 6521 else if (*p == '\0') 6522 goto invalid; 6523 p++; 6524 } 6525 6526 end_body = p; 6527 while (end_body[-1] == ' ' || end_body[-1] == '\t') 6528 end_body--; 6529 6530 if (have_subst && !starred) 6531 goto invalid; 6532 6533 if (matched) 6534 { 6535 /* Copy the substitution body to permanent storage and execute it. 6536 If have_subst is false, this is a simple matter of running the 6537 body through do_spec_1... */ 6538 char *string = save_string (body, end_body - body); 6539 if (!have_subst) 6540 { 6541 if (do_spec_1 (string, 0, NULL) < 0) 6542 { 6543 free (string); 6544 return 0; 6545 } 6546 } 6547 else 6548 { 6549 /* ... but if have_subst is true, we have to process the 6550 body once for each matching switch, with %* set to the 6551 variant part of the switch. */ 6552 unsigned int hard_match_len = end_atom - atom; 6553 int i; 6554 6555 for (i = 0; i < n_switches; i++) 6556 if (!strncmp (switches[i].part1, atom, hard_match_len) 6557 && check_live_switch (i, hard_match_len)) 6558 { 6559 if (do_spec_1 (string, 0, 6560 &switches[i].part1[hard_match_len]) < 0) 6561 { 6562 free (string); 6563 return 0; 6564 } 6565 /* Pass any arguments this switch has. */ 6566 give_switch (i, 1); 6567 suffix_subst = NULL; 6568 } 6569 } 6570 free (string); 6571 } 6572 6573 return p; 6574 6575 invalid: 6576 fatal_error (input_location, "braced spec body %qs is invalid", body); 6577 } 6578 6579 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch 6580 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} 6581 spec, or -1 if either exact match or %* is used. 6582 6583 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch 6584 whose value does not begin with "no-" is obsoleted by the same value 6585 with the "no-", similarly for a switch with the "no-" prefix. */ 6586 6587 static int 6588 check_live_switch (int switchnum, int prefix_length) 6589 { 6590 const char *name = switches[switchnum].part1; 6591 int i; 6592 6593 /* If we already processed this switch and determined if it was 6594 live or not, return our past determination. */ 6595 if (switches[switchnum].live_cond != 0) 6596 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0 6597 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0 6598 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY) 6599 == 0); 6600 6601 /* In the common case of {<at-most-one-letter>*}, a negating 6602 switch would always match, so ignore that case. We will just 6603 send the conflicting switches to the compiler phase. */ 6604 if (prefix_length >= 0 && prefix_length <= 1) 6605 return 1; 6606 6607 /* Now search for duplicate in a manner that depends on the name. */ 6608 switch (*name) 6609 { 6610 case 'O': 6611 for (i = switchnum + 1; i < n_switches; i++) 6612 if (switches[i].part1[0] == 'O') 6613 { 6614 switches[switchnum].validated = true; 6615 switches[switchnum].live_cond = SWITCH_FALSE; 6616 return 0; 6617 } 6618 break; 6619 6620 case 'W': case 'f': case 'm': case 'g': 6621 if (! strncmp (name + 1, "no-", 3)) 6622 { 6623 /* We have Xno-YYY, search for XYYY. */ 6624 for (i = switchnum + 1; i < n_switches; i++) 6625 if (switches[i].part1[0] == name[0] 6626 && ! strcmp (&switches[i].part1[1], &name[4])) 6627 { 6628 /* --specs are validated with the validate_switches mechanism. */ 6629 if (switches[switchnum].known) 6630 switches[switchnum].validated = true; 6631 switches[switchnum].live_cond = SWITCH_FALSE; 6632 return 0; 6633 } 6634 } 6635 else 6636 { 6637 /* We have XYYY, search for Xno-YYY. */ 6638 for (i = switchnum + 1; i < n_switches; i++) 6639 if (switches[i].part1[0] == name[0] 6640 && switches[i].part1[1] == 'n' 6641 && switches[i].part1[2] == 'o' 6642 && switches[i].part1[3] == '-' 6643 && !strcmp (&switches[i].part1[4], &name[1])) 6644 { 6645 /* --specs are validated with the validate_switches mechanism. */ 6646 if (switches[switchnum].known) 6647 switches[switchnum].validated = true; 6648 switches[switchnum].live_cond = SWITCH_FALSE; 6649 return 0; 6650 } 6651 } 6652 break; 6653 } 6654 6655 /* Otherwise the switch is live. */ 6656 switches[switchnum].live_cond |= SWITCH_LIVE; 6657 return 1; 6658 } 6659 6660 /* Pass a switch to the current accumulating command 6661 in the same form that we received it. 6662 SWITCHNUM identifies the switch; it is an index into 6663 the vector of switches gcc received, which is `switches'. 6664 This cannot fail since it never finishes a command line. 6665 6666 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ 6667 6668 static void 6669 give_switch (int switchnum, int omit_first_word) 6670 { 6671 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0) 6672 return; 6673 6674 if (!omit_first_word) 6675 { 6676 do_spec_1 ("-", 0, NULL); 6677 do_spec_1 (switches[switchnum].part1, 1, NULL); 6678 } 6679 6680 if (switches[switchnum].args != 0) 6681 { 6682 const char **p; 6683 for (p = switches[switchnum].args; *p; p++) 6684 { 6685 const char *arg = *p; 6686 6687 do_spec_1 (" ", 0, NULL); 6688 if (suffix_subst) 6689 { 6690 unsigned length = strlen (arg); 6691 int dot = 0; 6692 6693 while (length-- && !IS_DIR_SEPARATOR (arg[length])) 6694 if (arg[length] == '.') 6695 { 6696 (CONST_CAST (char *, arg))[length] = 0; 6697 dot = 1; 6698 break; 6699 } 6700 do_spec_1 (arg, 1, NULL); 6701 if (dot) 6702 (CONST_CAST (char *, arg))[length] = '.'; 6703 do_spec_1 (suffix_subst, 1, NULL); 6704 } 6705 else 6706 do_spec_1 (arg, 1, NULL); 6707 } 6708 } 6709 6710 do_spec_1 (" ", 0, NULL); 6711 switches[switchnum].validated = true; 6712 } 6713 6714 /* Print GCC configuration (e.g. version, thread model, target, 6715 configuration_arguments) to a given FILE. */ 6716 6717 static void 6718 print_configuration (FILE *file) 6719 { 6720 int n; 6721 const char *thrmod; 6722 6723 fnotice (file, "Target: %s\n", spec_machine); 6724 fnotice (file, "Configured with: %s\n", configuration_arguments); 6725 6726 #ifdef THREAD_MODEL_SPEC 6727 /* We could have defined THREAD_MODEL_SPEC to "%*" by default, 6728 but there's no point in doing all this processing just to get 6729 thread_model back. */ 6730 obstack_init (&obstack); 6731 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); 6732 obstack_1grow (&obstack, '\0'); 6733 thrmod = XOBFINISH (&obstack, const char *); 6734 #else 6735 thrmod = thread_model; 6736 #endif 6737 6738 fnotice (file, "Thread model: %s\n", thrmod); 6739 6740 /* compiler_version is truncated at the first space when initialized 6741 from version string, so truncate version_string at the first space 6742 before comparing. */ 6743 for (n = 0; version_string[n]; n++) 6744 if (version_string[n] == ' ') 6745 break; 6746 6747 if (! strncmp (version_string, compiler_version, n) 6748 && compiler_version[n] == 0) 6749 fnotice (file, "gcc version %s %s\n", version_string, 6750 pkgversion_string); 6751 else 6752 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n", 6753 version_string, pkgversion_string, compiler_version); 6754 6755 } 6756 6757 #define RETRY_ICE_ATTEMPTS 3 6758 6759 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */ 6760 6761 static bool 6762 files_equal_p (char *file1, char *file2) 6763 { 6764 struct stat st1, st2; 6765 off_t n, len; 6766 int fd1, fd2; 6767 const int bufsize = 8192; 6768 char *buf = XNEWVEC (char, bufsize); 6769 6770 fd1 = open (file1, O_RDONLY); 6771 fd2 = open (file2, O_RDONLY); 6772 6773 if (fd1 < 0 || fd2 < 0) 6774 goto error; 6775 6776 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0) 6777 goto error; 6778 6779 if (st1.st_size != st2.st_size) 6780 goto error; 6781 6782 for (n = st1.st_size; n; n -= len) 6783 { 6784 len = n; 6785 if ((int) len > bufsize / 2) 6786 len = bufsize / 2; 6787 6788 if (read (fd1, buf, len) != (int) len 6789 || read (fd2, buf + bufsize / 2, len) != (int) len) 6790 { 6791 goto error; 6792 } 6793 6794 if (memcmp (buf, buf + bufsize / 2, len) != 0) 6795 goto error; 6796 } 6797 6798 free (buf); 6799 close (fd1); 6800 close (fd2); 6801 6802 return 1; 6803 6804 error: 6805 free (buf); 6806 close (fd1); 6807 close (fd2); 6808 return 0; 6809 } 6810 6811 /* Check that compiler's output doesn't differ across runs. 6812 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing 6813 stdout and stderr for each compiler run. Return true if all of 6814 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */ 6815 6816 static bool 6817 check_repro (char **temp_stdout_files, char **temp_stderr_files) 6818 { 6819 int i; 6820 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i) 6821 { 6822 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1]) 6823 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1])) 6824 { 6825 fnotice (stderr, "The bug is not reproducible, so it is" 6826 " likely a hardware or OS problem.\n"); 6827 break; 6828 } 6829 } 6830 return i == RETRY_ICE_ATTEMPTS - 2; 6831 } 6832 6833 enum attempt_status { 6834 ATTEMPT_STATUS_FAIL_TO_RUN, 6835 ATTEMPT_STATUS_SUCCESS, 6836 ATTEMPT_STATUS_ICE 6837 }; 6838 6839 6840 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout 6841 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP 6842 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write 6843 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if 6844 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and 6845 ATTEMPT_STATUS_SUCCESS otherwise. */ 6846 6847 static enum attempt_status 6848 run_attempt (const char **new_argv, const char *out_temp, 6849 const char *err_temp, int emit_system_info, int append) 6850 { 6851 6852 if (emit_system_info) 6853 { 6854 FILE *file_out = fopen (err_temp, "a"); 6855 print_configuration (file_out); 6856 fputs ("\n", file_out); 6857 fclose (file_out); 6858 } 6859 6860 int exit_status; 6861 const char *errmsg; 6862 struct pex_obj *pex; 6863 int err; 6864 int pex_flags = PEX_USE_PIPES | PEX_LAST; 6865 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN; 6866 6867 if (append) 6868 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND; 6869 6870 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL); 6871 if (!pex) 6872 fatal_error (input_location, "pex_init failed: %m"); 6873 6874 errmsg = pex_run (pex, pex_flags, new_argv[0], 6875 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp, 6876 err_temp, &err); 6877 if (errmsg != NULL) 6878 { 6879 if (err == 0) 6880 fatal_error (input_location, errmsg); 6881 else 6882 { 6883 errno = err; 6884 pfatal_with_name (errmsg); 6885 } 6886 } 6887 6888 if (!pex_get_status (pex, 1, &exit_status)) 6889 goto out; 6890 6891 switch (WEXITSTATUS (exit_status)) 6892 { 6893 case ICE_EXIT_CODE: 6894 status = ATTEMPT_STATUS_ICE; 6895 break; 6896 6897 case SUCCESS_EXIT_CODE: 6898 status = ATTEMPT_STATUS_SUCCESS; 6899 break; 6900 6901 default: 6902 ; 6903 } 6904 6905 out: 6906 pex_free (pex); 6907 return status; 6908 } 6909 6910 /* This routine reads lines from IN file, adds C++ style comments 6911 at the begining of each line and writes result into OUT. */ 6912 6913 static void 6914 insert_comments (const char *file_in, const char *file_out) 6915 { 6916 FILE *in = fopen (file_in, "rb"); 6917 FILE *out = fopen (file_out, "wb"); 6918 char line[256]; 6919 6920 bool add_comment = true; 6921 while (fgets (line, sizeof (line), in)) 6922 { 6923 if (add_comment) 6924 fputs ("// ", out); 6925 fputs (line, out); 6926 add_comment = strchr (line, '\n') != NULL; 6927 } 6928 6929 fclose (in); 6930 fclose (out); 6931 } 6932 6933 /* This routine adds preprocessed source code into the given ERR_FILE. 6934 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to 6935 add information in report file. RUN_ATTEMPT should return 6936 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */ 6937 6938 static void 6939 do_report_bug (const char **new_argv, const int nargs, 6940 char **out_file, char **err_file) 6941 { 6942 int i, status; 6943 int fd = open (*out_file, O_RDWR | O_APPEND); 6944 if (fd < 0) 6945 return; 6946 write (fd, "\n//", 3); 6947 for (i = 0; i < nargs; i++) 6948 { 6949 write (fd, " ", 1); 6950 write (fd, new_argv[i], strlen (new_argv[i])); 6951 } 6952 write (fd, "\n\n", 2); 6953 close (fd); 6954 new_argv[nargs] = "-E"; 6955 new_argv[nargs + 1] = NULL; 6956 6957 status = run_attempt (new_argv, *out_file, *err_file, 0, 1); 6958 6959 if (status == ATTEMPT_STATUS_SUCCESS) 6960 { 6961 fnotice (stderr, "Preprocessed source stored into %s file," 6962 " please attach this to your bugreport.\n", *out_file); 6963 /* Make sure it is not deleted. */ 6964 free (*out_file); 6965 *out_file = NULL; 6966 } 6967 } 6968 6969 /* Try to reproduce ICE. If bug is reproducible, generate report .err file 6970 containing GCC configuration, backtrace, compiler's command line options 6971 and preprocessed source code. */ 6972 6973 static void 6974 try_generate_repro (const char **argv) 6975 { 6976 int i, nargs, out_arg = -1, quiet = 0, attempt; 6977 const char **new_argv; 6978 char *temp_files[RETRY_ICE_ATTEMPTS * 2]; 6979 char **temp_stdout_files = &temp_files[0]; 6980 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS]; 6981 6982 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-")) 6983 return; 6984 6985 for (nargs = 0; argv[nargs] != NULL; ++nargs) 6986 /* Only retry compiler ICEs, not preprocessor ones. */ 6987 if (! strcmp (argv[nargs], "-E")) 6988 return; 6989 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o') 6990 { 6991 if (out_arg == -1) 6992 out_arg = nargs; 6993 else 6994 return; 6995 } 6996 /* If the compiler is going to output any time information, 6997 it might varry between invocations. */ 6998 else if (! strcmp (argv[nargs], "-quiet")) 6999 quiet = 1; 7000 else if (! strcmp (argv[nargs], "-ftime-report")) 7001 return; 7002 7003 if (out_arg == -1 || !quiet) 7004 return; 7005 7006 memset (temp_files, '\0', sizeof (temp_files)); 7007 new_argv = XALLOCAVEC (const char *, nargs + 4); 7008 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *)); 7009 new_argv[nargs++] = "-frandom-seed=0"; 7010 new_argv[nargs++] = "-fdump-noaddr"; 7011 new_argv[nargs] = NULL; 7012 if (new_argv[out_arg][2] == '\0') 7013 new_argv[out_arg + 1] = "-"; 7014 else 7015 new_argv[out_arg] = "-o-"; 7016 7017 int status; 7018 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt) 7019 { 7020 int emit_system_info = 0; 7021 int append = 0; 7022 temp_stdout_files[attempt] = make_temp_file (".out"); 7023 temp_stderr_files[attempt] = make_temp_file (".err"); 7024 7025 if (attempt == RETRY_ICE_ATTEMPTS - 1) 7026 { 7027 append = 1; 7028 emit_system_info = 1; 7029 } 7030 7031 status = run_attempt (new_argv, temp_stdout_files[attempt], 7032 temp_stderr_files[attempt], emit_system_info, 7033 append); 7034 7035 if (status != ATTEMPT_STATUS_ICE) 7036 { 7037 fnotice (stderr, "The bug is not reproducible, so it is" 7038 " likely a hardware or OS problem.\n"); 7039 goto out; 7040 } 7041 } 7042 7043 if (!check_repro (temp_stdout_files, temp_stderr_files)) 7044 goto out; 7045 7046 { 7047 /* Insert commented out backtrace into report file. */ 7048 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1]; 7049 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1], 7050 *stderr_commented); 7051 7052 /* In final attempt we append compiler options and preprocesssed code to last 7053 generated .out file with configuration and backtrace. */ 7054 char **err = &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1]; 7055 do_report_bug (new_argv, nargs, stderr_commented, err); 7056 } 7057 7058 out: 7059 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++) 7060 if (temp_files[i]) 7061 { 7062 unlink (temp_stdout_files[i]); 7063 free (temp_stdout_files[i]); 7064 } 7065 } 7066 7067 /* Search for a file named NAME trying various prefixes including the 7068 user's -B prefix and some standard ones. 7069 Return the absolute file name found. If nothing is found, return NAME. */ 7070 7071 static const char * 7072 find_file (const char *name) 7073 { 7074 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); 7075 return newname ? newname : name; 7076 } 7077 7078 /* Determine whether a directory exists. If LINKER, return 0 for 7079 certain fixed names not needed by the linker. */ 7080 7081 static int 7082 is_directory (const char *path1, bool linker) 7083 { 7084 int len1; 7085 char *path; 7086 char *cp; 7087 struct stat st; 7088 7089 /* Ensure the string ends with "/.". The resulting path will be a 7090 directory even if the given path is a symbolic link. */ 7091 len1 = strlen (path1); 7092 path = (char *) alloca (3 + len1); 7093 memcpy (path, path1, len1); 7094 cp = path + len1; 7095 if (!IS_DIR_SEPARATOR (cp[-1])) 7096 *cp++ = DIR_SEPARATOR; 7097 *cp++ = '.'; 7098 *cp = '\0'; 7099 7100 /* Exclude directories that the linker is known to search. */ 7101 if (linker 7102 && IS_DIR_SEPARATOR (path[0]) 7103 && ((cp - path == 6 7104 && filename_ncmp (path + 1, "lib", 3) == 0) 7105 || (cp - path == 10 7106 && filename_ncmp (path + 1, "usr", 3) == 0 7107 && IS_DIR_SEPARATOR (path[4]) 7108 && filename_ncmp (path + 5, "lib", 3) == 0))) 7109 return 0; 7110 7111 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); 7112 } 7113 7114 /* Set up the various global variables to indicate that we're processing 7115 the input file named FILENAME. */ 7116 7117 void 7118 set_input (const char *filename) 7119 { 7120 const char *p; 7121 7122 gcc_input_filename = filename; 7123 input_filename_length = strlen (gcc_input_filename); 7124 input_basename = lbasename (gcc_input_filename); 7125 7126 /* Find a suffix starting with the last period, 7127 and set basename_length to exclude that suffix. */ 7128 basename_length = strlen (input_basename); 7129 suffixed_basename_length = basename_length; 7130 p = input_basename + basename_length; 7131 while (p != input_basename && *p != '.') 7132 --p; 7133 if (*p == '.' && p != input_basename) 7134 { 7135 basename_length = p - input_basename; 7136 input_suffix = p + 1; 7137 } 7138 else 7139 input_suffix = ""; 7140 7141 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then 7142 we will need to do a stat on the gcc_input_filename. The 7143 INPUT_STAT_SET signals that the stat is needed. */ 7144 input_stat_set = 0; 7145 } 7146 7147 /* On fatal signals, delete all the temporary files. */ 7148 7149 static void 7150 fatal_signal (int signum) 7151 { 7152 signal (signum, SIG_DFL); 7153 delete_failure_queue (); 7154 delete_temp_files (); 7155 /* Get the same signal again, this time not handled, 7156 so its normal effect occurs. */ 7157 kill (getpid (), signum); 7158 } 7159 7160 /* Compare the contents of the two files named CMPFILE[0] and 7161 CMPFILE[1]. Return zero if they're identical, nonzero 7162 otherwise. */ 7163 7164 static int 7165 compare_files (char *cmpfile[]) 7166 { 7167 int ret = 0; 7168 FILE *temp[2] = { NULL, NULL }; 7169 int i; 7170 7171 #if HAVE_MMAP_FILE 7172 { 7173 size_t length[2]; 7174 void *map[2] = { NULL, NULL }; 7175 7176 for (i = 0; i < 2; i++) 7177 { 7178 struct stat st; 7179 7180 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode)) 7181 { 7182 error ("%s: could not determine length of compare-debug file %s", 7183 gcc_input_filename, cmpfile[i]); 7184 ret = 1; 7185 break; 7186 } 7187 7188 length[i] = st.st_size; 7189 } 7190 7191 if (!ret && length[0] != length[1]) 7192 { 7193 error ("%s: -fcompare-debug failure (length)", gcc_input_filename); 7194 ret = 1; 7195 } 7196 7197 if (!ret) 7198 for (i = 0; i < 2; i++) 7199 { 7200 int fd = open (cmpfile[i], O_RDONLY); 7201 if (fd < 0) 7202 { 7203 error ("%s: could not open compare-debug file %s", 7204 gcc_input_filename, cmpfile[i]); 7205 ret = 1; 7206 break; 7207 } 7208 7209 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0); 7210 close (fd); 7211 7212 if (map[i] == (void *) MAP_FAILED) 7213 { 7214 ret = -1; 7215 break; 7216 } 7217 } 7218 7219 if (!ret) 7220 { 7221 if (memcmp (map[0], map[1], length[0]) != 0) 7222 { 7223 error ("%s: -fcompare-debug failure", gcc_input_filename); 7224 ret = 1; 7225 } 7226 } 7227 7228 for (i = 0; i < 2; i++) 7229 if (map[i]) 7230 munmap ((caddr_t) map[i], length[i]); 7231 7232 if (ret >= 0) 7233 return ret; 7234 7235 ret = 0; 7236 } 7237 #endif 7238 7239 for (i = 0; i < 2; i++) 7240 { 7241 temp[i] = fopen (cmpfile[i], "r"); 7242 if (!temp[i]) 7243 { 7244 error ("%s: could not open compare-debug file %s", 7245 gcc_input_filename, cmpfile[i]); 7246 ret = 1; 7247 break; 7248 } 7249 } 7250 7251 if (!ret && temp[0] && temp[1]) 7252 for (;;) 7253 { 7254 int c0, c1; 7255 c0 = fgetc (temp[0]); 7256 c1 = fgetc (temp[1]); 7257 7258 if (c0 != c1) 7259 { 7260 error ("%s: -fcompare-debug failure", 7261 gcc_input_filename); 7262 ret = 1; 7263 break; 7264 } 7265 7266 if (c0 == EOF) 7267 break; 7268 } 7269 7270 for (i = 1; i >= 0; i--) 7271 { 7272 if (temp[i]) 7273 fclose (temp[i]); 7274 } 7275 7276 return ret; 7277 } 7278 7279 driver::driver (bool can_finalize, bool debug) : 7280 explicit_link_files (NULL), 7281 decoded_options (NULL), 7282 m_option_suggestions (NULL) 7283 { 7284 env.init (can_finalize, debug); 7285 } 7286 7287 driver::~driver () 7288 { 7289 XDELETEVEC (explicit_link_files); 7290 XDELETEVEC (decoded_options); 7291 if (m_option_suggestions) 7292 { 7293 int i; 7294 char *str; 7295 FOR_EACH_VEC_ELT (*m_option_suggestions, i, str) 7296 free (str); 7297 delete m_option_suggestions; 7298 } 7299 } 7300 7301 /* driver::main is implemented as a series of driver:: method calls. */ 7302 7303 int 7304 driver::main (int argc, char **argv) 7305 { 7306 bool early_exit; 7307 7308 set_progname (argv[0]); 7309 expand_at_files (&argc, &argv); 7310 decode_argv (argc, const_cast <const char **> (argv)); 7311 global_initializations (); 7312 build_multilib_strings (); 7313 set_up_specs (); 7314 putenv_COLLECT_GCC (argv[0]); 7315 maybe_putenv_COLLECT_LTO_WRAPPER (); 7316 maybe_putenv_OFFLOAD_TARGETS (); 7317 handle_unrecognized_options (); 7318 7319 if (!maybe_print_and_exit ()) 7320 return 0; 7321 7322 early_exit = prepare_infiles (); 7323 if (early_exit) 7324 return get_exit_code (); 7325 7326 do_spec_on_infiles (); 7327 maybe_run_linker (argv[0]); 7328 final_actions (); 7329 return get_exit_code (); 7330 } 7331 7332 /* Locate the final component of argv[0] after any leading path, and set 7333 the program name accordingly. */ 7334 7335 void 7336 driver::set_progname (const char *argv0) const 7337 { 7338 const char *p = argv0 + strlen (argv0); 7339 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) 7340 --p; 7341 progname = p; 7342 7343 xmalloc_set_program_name (progname); 7344 } 7345 7346 /* Expand any @ files within the command-line args, 7347 setting at_file_supplied if any were expanded. */ 7348 7349 void 7350 driver::expand_at_files (int *argc, char ***argv) const 7351 { 7352 char **old_argv = *argv; 7353 7354 expandargv (argc, argv); 7355 7356 /* Determine if any expansions were made. */ 7357 if (*argv != old_argv) 7358 at_file_supplied = true; 7359 } 7360 7361 /* Decode the command-line arguments from argc/argv into the 7362 decoded_options array. */ 7363 7364 void 7365 driver::decode_argv (int argc, const char **argv) 7366 { 7367 /* Register the language-independent parameters. */ 7368 global_init_params (); 7369 finish_params (); 7370 7371 init_opts_obstack (); 7372 init_options_struct (&global_options, &global_options_set); 7373 7374 decode_cmdline_options_to_array (argc, argv, 7375 CL_DRIVER, 7376 &decoded_options, &decoded_options_count); 7377 } 7378 7379 /* Perform various initializations and setup. */ 7380 7381 void 7382 driver::global_initializations () 7383 { 7384 /* Unlock the stdio streams. */ 7385 unlock_std_streams (); 7386 7387 gcc_init_libintl (); 7388 7389 diagnostic_initialize (global_dc, 0); 7390 diagnostic_color_init (global_dc); 7391 7392 #ifdef GCC_DRIVER_HOST_INITIALIZATION 7393 /* Perform host dependent initialization when needed. */ 7394 GCC_DRIVER_HOST_INITIALIZATION; 7395 #endif 7396 7397 if (atexit (delete_temp_files) != 0) 7398 fatal_error (input_location, "atexit failed"); 7399 7400 if (signal (SIGINT, SIG_IGN) != SIG_IGN) 7401 signal (SIGINT, fatal_signal); 7402 #ifdef SIGHUP 7403 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) 7404 signal (SIGHUP, fatal_signal); 7405 #endif 7406 if (signal (SIGTERM, SIG_IGN) != SIG_IGN) 7407 signal (SIGTERM, fatal_signal); 7408 #ifdef SIGPIPE 7409 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) 7410 signal (SIGPIPE, fatal_signal); 7411 #endif 7412 #ifdef SIGCHLD 7413 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will 7414 receive the signal. A different setting is inheritable */ 7415 signal (SIGCHLD, SIG_DFL); 7416 #endif 7417 7418 /* Parsing and gimplification sometimes need quite large stack. 7419 Increase stack size limits if possible. */ 7420 stack_limit_increase (64 * 1024 * 1024); 7421 7422 /* Allocate the argument vector. */ 7423 alloc_args (); 7424 7425 obstack_init (&obstack); 7426 } 7427 7428 /* Build multilib_select, et. al from the separate lines that make up each 7429 multilib selection. */ 7430 7431 void 7432 driver::build_multilib_strings () const 7433 { 7434 { 7435 const char *p; 7436 const char *const *q = multilib_raw; 7437 int need_space; 7438 7439 obstack_init (&multilib_obstack); 7440 while ((p = *q++) != (char *) 0) 7441 obstack_grow (&multilib_obstack, p, strlen (p)); 7442 7443 obstack_1grow (&multilib_obstack, 0); 7444 multilib_select = XOBFINISH (&multilib_obstack, const char *); 7445 7446 q = multilib_matches_raw; 7447 while ((p = *q++) != (char *) 0) 7448 obstack_grow (&multilib_obstack, p, strlen (p)); 7449 7450 obstack_1grow (&multilib_obstack, 0); 7451 multilib_matches = XOBFINISH (&multilib_obstack, const char *); 7452 7453 q = multilib_exclusions_raw; 7454 while ((p = *q++) != (char *) 0) 7455 obstack_grow (&multilib_obstack, p, strlen (p)); 7456 7457 obstack_1grow (&multilib_obstack, 0); 7458 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); 7459 7460 q = multilib_reuse_raw; 7461 while ((p = *q++) != (char *) 0) 7462 obstack_grow (&multilib_obstack, p, strlen (p)); 7463 7464 obstack_1grow (&multilib_obstack, 0); 7465 multilib_reuse = XOBFINISH (&multilib_obstack, const char *); 7466 7467 need_space = FALSE; 7468 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) 7469 { 7470 if (need_space) 7471 obstack_1grow (&multilib_obstack, ' '); 7472 obstack_grow (&multilib_obstack, 7473 multilib_defaults_raw[i], 7474 strlen (multilib_defaults_raw[i])); 7475 need_space = TRUE; 7476 } 7477 7478 obstack_1grow (&multilib_obstack, 0); 7479 multilib_defaults = XOBFINISH (&multilib_obstack, const char *); 7480 } 7481 } 7482 7483 /* Set up the spec-handling machinery. */ 7484 7485 void 7486 driver::set_up_specs () const 7487 { 7488 const char *spec_machine_suffix; 7489 char *specs_file; 7490 size_t i; 7491 7492 #ifdef INIT_ENVIRONMENT 7493 /* Set up any other necessary machine specific environment variables. */ 7494 xputenv (INIT_ENVIRONMENT); 7495 #endif 7496 7497 /* Make a table of what switches there are (switches, n_switches). 7498 Make a table of specified input files (infiles, n_infiles). 7499 Decode switches that are handled locally. */ 7500 7501 process_command (decoded_options_count, decoded_options); 7502 7503 /* Initialize the vector of specs to just the default. 7504 This means one element containing 0s, as a terminator. */ 7505 7506 compilers = XNEWVAR (struct compiler, sizeof default_compilers); 7507 memcpy (compilers, default_compilers, sizeof default_compilers); 7508 n_compilers = n_default_compilers; 7509 7510 /* Read specs from a file if there is one. */ 7511 7512 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version, 7513 accel_dir_suffix, dir_separator_str, NULL); 7514 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); 7515 7516 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); 7517 /* Read the specs file unless it is a default one. */ 7518 if (specs_file != 0 && strcmp (specs_file, "specs")) 7519 read_specs (specs_file, true, false); 7520 else 7521 init_spec (); 7522 7523 #ifdef ACCEL_COMPILER 7524 spec_machine_suffix = machine_suffix; 7525 #else 7526 spec_machine_suffix = just_machine_suffix; 7527 #endif 7528 7529 /* We need to check standard_exec_prefix/spec_machine_suffix/specs 7530 for any override of as, ld and libraries. */ 7531 specs_file = (char *) alloca (strlen (standard_exec_prefix) 7532 + strlen (spec_machine_suffix) + sizeof ("specs")); 7533 strcpy (specs_file, standard_exec_prefix); 7534 strcat (specs_file, spec_machine_suffix); 7535 strcat (specs_file, "specs"); 7536 if (access (specs_file, R_OK) == 0) 7537 read_specs (specs_file, true, false); 7538 7539 /* Process any configure-time defaults specified for the command line 7540 options, via OPTION_DEFAULT_SPECS. */ 7541 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) 7542 do_option_spec (option_default_specs[i].name, 7543 option_default_specs[i].spec); 7544 7545 /* Process DRIVER_SELF_SPECS, adding any new options to the end 7546 of the command line. */ 7547 7548 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) 7549 do_self_spec (driver_self_specs[i]); 7550 7551 /* If not cross-compiling, look for executables in the standard 7552 places. */ 7553 if (*cross_compile == '0') 7554 { 7555 if (*md_exec_prefix) 7556 { 7557 add_prefix (&exec_prefixes, md_exec_prefix, "GCC", 7558 PREFIX_PRIORITY_LAST, 0, 0); 7559 } 7560 } 7561 7562 /* Process sysroot_suffix_spec. */ 7563 if (*sysroot_suffix_spec != 0 7564 && !no_sysroot_suffix 7565 && do_spec_2 (sysroot_suffix_spec) == 0) 7566 { 7567 if (argbuf.length () > 1) 7568 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); 7569 else if (argbuf.length () == 1) 7570 target_sysroot_suffix = xstrdup (argbuf.last ()); 7571 } 7572 7573 #ifdef HAVE_LD_SYSROOT 7574 /* Pass the --sysroot option to the linker, if it supports that. If 7575 there is a sysroot_suffix_spec, it has already been processed by 7576 this point, so target_system_root really is the system root we 7577 should be using. */ 7578 if (target_system_root) 7579 { 7580 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); 7581 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 7582 set_spec ("link", XOBFINISH (&obstack, const char *), false); 7583 } 7584 #endif 7585 7586 /* Process sysroot_hdrs_suffix_spec. */ 7587 if (*sysroot_hdrs_suffix_spec != 0 7588 && !no_sysroot_suffix 7589 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) 7590 { 7591 if (argbuf.length () > 1) 7592 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); 7593 else if (argbuf.length () == 1) 7594 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ()); 7595 } 7596 7597 /* Look for startfiles in the standard places. */ 7598 if (*startfile_prefix_spec != 0 7599 && do_spec_2 (startfile_prefix_spec) == 0 7600 && do_spec_1 (" ", 0, NULL) == 0) 7601 { 7602 const char *arg; 7603 int ndx; 7604 FOR_EACH_VEC_ELT (argbuf, ndx, arg) 7605 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS", 7606 PREFIX_PRIORITY_LAST, 0, 1); 7607 } 7608 /* We should eventually get rid of all these and stick to 7609 startfile_prefix_spec exclusively. */ 7610 else if (*cross_compile == '0' || target_system_root) 7611 { 7612 if (*md_startfile_prefix) 7613 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, 7614 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 7615 7616 if (*md_startfile_prefix_1) 7617 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, 7618 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 7619 7620 /* If standard_startfile_prefix is relative, base it on 7621 standard_exec_prefix. This lets us move the installed tree 7622 as a unit. If GCC_EXEC_PREFIX is defined, base 7623 standard_startfile_prefix on that as well. 7624 7625 If the prefix is relative, only search it for native compilers; 7626 otherwise we will search a directory containing host libraries. */ 7627 if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) 7628 add_sysrooted_prefix (&startfile_prefixes, 7629 standard_startfile_prefix, "BINUTILS", 7630 PREFIX_PRIORITY_LAST, 0, 1); 7631 else if (*cross_compile == '0') 7632 { 7633 add_prefix (&startfile_prefixes, 7634 concat (gcc_exec_prefix 7635 ? gcc_exec_prefix : standard_exec_prefix, 7636 machine_suffix, 7637 standard_startfile_prefix, NULL), 7638 NULL, PREFIX_PRIORITY_LAST, 0, 1); 7639 } 7640 7641 /* Sysrooted prefixes are relocated because target_system_root is 7642 also relocated by gcc_exec_prefix. */ 7643 if (*standard_startfile_prefix_1) 7644 add_sysrooted_prefix (&startfile_prefixes, 7645 standard_startfile_prefix_1, "BINUTILS", 7646 PREFIX_PRIORITY_LAST, 0, 1); 7647 if (*standard_startfile_prefix_2) 7648 add_sysrooted_prefix (&startfile_prefixes, 7649 standard_startfile_prefix_2, "BINUTILS", 7650 PREFIX_PRIORITY_LAST, 0, 1); 7651 } 7652 7653 /* Process any user specified specs in the order given on the command 7654 line. */ 7655 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next) 7656 { 7657 char *filename = find_a_file (&startfile_prefixes, uptr->filename, 7658 R_OK, true); 7659 read_specs (filename ? filename : uptr->filename, false, true); 7660 } 7661 7662 /* Process any user self specs. */ 7663 { 7664 struct spec_list *sl; 7665 for (sl = specs; sl; sl = sl->next) 7666 if (sl->name_len == sizeof "self_spec" - 1 7667 && !strcmp (sl->name, "self_spec")) 7668 do_self_spec (*sl->ptr_spec); 7669 } 7670 7671 if (compare_debug) 7672 { 7673 enum save_temps save; 7674 7675 if (!compare_debug_second) 7676 { 7677 n_switches_debug_check[1] = n_switches; 7678 n_switches_alloc_debug_check[1] = n_switches_alloc; 7679 switches_debug_check[1] = XDUPVEC (struct switchstr, switches, 7680 n_switches_alloc); 7681 7682 do_self_spec ("%:compare-debug-self-opt()"); 7683 n_switches_debug_check[0] = n_switches; 7684 n_switches_alloc_debug_check[0] = n_switches_alloc; 7685 switches_debug_check[0] = switches; 7686 7687 n_switches = n_switches_debug_check[1]; 7688 n_switches_alloc = n_switches_alloc_debug_check[1]; 7689 switches = switches_debug_check[1]; 7690 } 7691 7692 /* Avoid crash when computing %j in this early. */ 7693 save = save_temps_flag; 7694 save_temps_flag = SAVE_TEMPS_NONE; 7695 7696 compare_debug = -compare_debug; 7697 do_self_spec ("%:compare-debug-self-opt()"); 7698 7699 save_temps_flag = save; 7700 7701 if (!compare_debug_second) 7702 { 7703 n_switches_debug_check[1] = n_switches; 7704 n_switches_alloc_debug_check[1] = n_switches_alloc; 7705 switches_debug_check[1] = switches; 7706 compare_debug = -compare_debug; 7707 n_switches = n_switches_debug_check[0]; 7708 n_switches_alloc = n_switches_debug_check[0]; 7709 switches = switches_debug_check[0]; 7710 } 7711 } 7712 7713 7714 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ 7715 if (gcc_exec_prefix) 7716 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine, 7717 dir_separator_str, spec_version, 7718 accel_dir_suffix, dir_separator_str, NULL); 7719 7720 /* Now we have the specs. 7721 Set the `valid' bits for switches that match anything in any spec. */ 7722 7723 validate_all_switches (); 7724 7725 /* Now that we have the switches and the specs, set 7726 the subdirectory based on the options. */ 7727 set_multilib_dir (); 7728 } 7729 7730 /* Set up to remember the pathname of gcc and any options 7731 needed for collect. We use argv[0] instead of progname because 7732 we need the complete pathname. */ 7733 7734 void 7735 driver::putenv_COLLECT_GCC (const char *argv0) const 7736 { 7737 obstack_init (&collect_obstack); 7738 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); 7739 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1); 7740 xputenv (XOBFINISH (&collect_obstack, char *)); 7741 } 7742 7743 /* Set up to remember the pathname of the lto wrapper. */ 7744 7745 void 7746 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const 7747 { 7748 char *lto_wrapper_file; 7749 7750 if (have_c) 7751 lto_wrapper_file = NULL; 7752 else 7753 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", 7754 X_OK, false); 7755 if (lto_wrapper_file) 7756 { 7757 lto_wrapper_file = convert_white_space (lto_wrapper_file); 7758 lto_wrapper_spec = lto_wrapper_file; 7759 obstack_init (&collect_obstack); 7760 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=", 7761 sizeof ("COLLECT_LTO_WRAPPER=") - 1); 7762 obstack_grow (&collect_obstack, lto_wrapper_spec, 7763 strlen (lto_wrapper_spec) + 1); 7764 xputenv (XOBFINISH (&collect_obstack, char *)); 7765 } 7766 7767 } 7768 7769 /* Set up to remember the names of offload targets. */ 7770 7771 void 7772 driver::maybe_putenv_OFFLOAD_TARGETS () const 7773 { 7774 if (offload_targets && offload_targets[0] != '\0') 7775 { 7776 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=", 7777 sizeof ("OFFLOAD_TARGET_NAMES=") - 1); 7778 obstack_grow (&collect_obstack, offload_targets, 7779 strlen (offload_targets) + 1); 7780 xputenv (XOBFINISH (&collect_obstack, char *)); 7781 } 7782 7783 free (offload_targets); 7784 offload_targets = NULL; 7785 } 7786 7787 /* Helper function for driver::suggest_option. Populate 7788 m_option_suggestions with candidate strings for misspelled options. 7789 The strings will be freed by the driver's dtor. */ 7790 7791 void 7792 driver::build_option_suggestions (void) 7793 { 7794 gcc_assert (m_option_suggestions == NULL); 7795 m_option_suggestions = new auto_vec <char *> (); 7796 7797 /* We build a vec of m_option_suggestions, using add_misspelling_candidates 7798 to add copies of strings, without a leading dash. */ 7799 7800 for (unsigned int i = 0; i < cl_options_count; i++) 7801 { 7802 const struct cl_option *option = &cl_options[i]; 7803 const char *opt_text = option->opt_text; 7804 switch (i) 7805 { 7806 default: 7807 if (option->var_type == CLVC_ENUM) 7808 { 7809 const struct cl_enum *e = &cl_enums[option->var_enum]; 7810 for (unsigned j = 0; e->values[j].arg != NULL; j++) 7811 { 7812 char *with_arg = concat (opt_text, e->values[j].arg, NULL); 7813 add_misspelling_candidates (m_option_suggestions, option, 7814 with_arg); 7815 free (with_arg); 7816 } 7817 } 7818 else 7819 add_misspelling_candidates (m_option_suggestions, option, 7820 opt_text); 7821 break; 7822 7823 case OPT_fsanitize_: 7824 case OPT_fsanitize_recover_: 7825 /* -fsanitize= and -fsanitize-recover= can take 7826 a comma-separated list of arguments. Given that combinations 7827 are supported, we can't add all potential candidates to the 7828 vec, but if we at least add them individually without commas, 7829 we should do a better job e.g. correcting 7830 "-sanitize=address" 7831 to 7832 "-fsanitize=address" 7833 rather than to "-Wframe-address" (PR driver/69265). */ 7834 { 7835 for (int j = 0; sanitizer_opts[j].name != NULL; ++j) 7836 { 7837 struct cl_option optb; 7838 /* -fsanitize=all is not valid, only -fno-sanitize=all. 7839 So don't register the positive misspelling candidates 7840 for it. */ 7841 if (sanitizer_opts[j].flag == ~0U && i == OPT_fsanitize_) 7842 { 7843 optb = *option; 7844 optb.opt_text = opt_text = "-fno-sanitize="; 7845 optb.cl_reject_negative = true; 7846 option = &optb; 7847 } 7848 /* Get one arg at a time e.g. "-fsanitize=address". */ 7849 char *with_arg = concat (opt_text, 7850 sanitizer_opts[j].name, 7851 NULL); 7852 /* Add with_arg and all of its variant spellings e.g. 7853 "-fno-sanitize=address" to candidates (albeit without 7854 leading dashes). */ 7855 add_misspelling_candidates (m_option_suggestions, option, 7856 with_arg); 7857 free (with_arg); 7858 } 7859 } 7860 break; 7861 } 7862 } 7863 } 7864 7865 /* Helper function for driver::handle_unrecognized_options. 7866 7867 Given an unrecognized option BAD_OPT (without the leading dash), 7868 locate the closest reasonable matching option (again, without the 7869 leading dash), or NULL. 7870 7871 The returned string is owned by the driver instance. */ 7872 7873 const char * 7874 driver::suggest_option (const char *bad_opt) 7875 { 7876 /* Lazily populate m_option_suggestions. */ 7877 if (!m_option_suggestions) 7878 build_option_suggestions (); 7879 gcc_assert (m_option_suggestions); 7880 7881 /* "m_option_suggestions" is now populated. Use it. */ 7882 return find_closest_string 7883 (bad_opt, 7884 (auto_vec <const char *> *) m_option_suggestions); 7885 } 7886 7887 /* Reject switches that no pass was interested in. */ 7888 7889 void 7890 driver::handle_unrecognized_options () 7891 { 7892 for (size_t i = 0; (int) i < n_switches; i++) 7893 if (! switches[i].validated) 7894 { 7895 const char *hint = suggest_option (switches[i].part1); 7896 if (hint) 7897 error ("unrecognized command line option %<-%s%>;" 7898 " did you mean %<-%s%>?", 7899 switches[i].part1, hint); 7900 else 7901 error ("unrecognized command line option %<-%s%>", 7902 switches[i].part1); 7903 } 7904 } 7905 7906 /* Handle the various -print-* options, returning 0 if the driver 7907 should exit, or nonzero if the driver should continue. */ 7908 7909 int 7910 driver::maybe_print_and_exit () const 7911 { 7912 if (print_search_dirs) 7913 { 7914 printf (_("install: %s%s\n"), 7915 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, 7916 gcc_exec_prefix ? "" : machine_suffix); 7917 printf (_("programs: %s\n"), 7918 build_search_list (&exec_prefixes, "", false, false)); 7919 printf (_("libraries: %s\n"), 7920 build_search_list (&startfile_prefixes, "", false, true)); 7921 return (0); 7922 } 7923 7924 if (print_file_name) 7925 { 7926 printf ("%s\n", find_file (print_file_name)); 7927 return (0); 7928 } 7929 7930 if (print_prog_name) 7931 { 7932 if (use_ld != NULL && ! strcmp (print_prog_name, "ld")) 7933 { 7934 /* Append USE_LD to the default linker. */ 7935 #ifdef DEFAULT_LINKER 7936 char *ld; 7937 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX 7938 int len = (sizeof (DEFAULT_LINKER) 7939 - sizeof (HOST_EXECUTABLE_SUFFIX)); 7940 ld = NULL; 7941 if (len > 0) 7942 { 7943 char *default_linker = xstrdup (DEFAULT_LINKER); 7944 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains 7945 HOST_EXECUTABLE_SUFFIX. */ 7946 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX)) 7947 { 7948 default_linker[len] = '\0'; 7949 ld = concat (default_linker, use_ld, 7950 HOST_EXECUTABLE_SUFFIX, NULL); 7951 } 7952 } 7953 if (ld == NULL) 7954 # endif 7955 ld = concat (DEFAULT_LINKER, use_ld, NULL); 7956 if (access (ld, X_OK) == 0) 7957 { 7958 printf ("%s\n", ld); 7959 return (0); 7960 } 7961 #endif 7962 print_prog_name = concat (print_prog_name, use_ld, NULL); 7963 } 7964 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); 7965 printf ("%s\n", (newname ? newname : print_prog_name)); 7966 return (0); 7967 } 7968 7969 if (print_multi_lib) 7970 { 7971 print_multilib_info (); 7972 return (0); 7973 } 7974 7975 if (print_multi_directory) 7976 { 7977 if (multilib_dir == NULL) 7978 printf (".\n"); 7979 else 7980 printf ("%s\n", multilib_dir); 7981 return (0); 7982 } 7983 7984 if (print_multiarch) 7985 { 7986 if (multiarch_dir == NULL) 7987 printf ("\n"); 7988 else 7989 printf ("%s\n", multiarch_dir); 7990 return (0); 7991 } 7992 7993 if (print_sysroot) 7994 { 7995 if (target_system_root) 7996 { 7997 if (target_sysroot_suffix) 7998 printf ("%s%s\n", target_system_root, target_sysroot_suffix); 7999 else 8000 printf ("%s\n", target_system_root); 8001 } 8002 return (0); 8003 } 8004 8005 if (print_multi_os_directory) 8006 { 8007 if (multilib_os_dir == NULL) 8008 printf (".\n"); 8009 else 8010 printf ("%s\n", multilib_os_dir); 8011 return (0); 8012 } 8013 8014 if (print_sysroot_headers_suffix) 8015 { 8016 if (*sysroot_hdrs_suffix_spec) 8017 { 8018 printf("%s\n", (target_sysroot_hdrs_suffix 8019 ? target_sysroot_hdrs_suffix 8020 : "")); 8021 return (0); 8022 } 8023 else 8024 /* The error status indicates that only one set of fixed 8025 headers should be built. */ 8026 fatal_error (input_location, 8027 "not configured with sysroot headers suffix"); 8028 } 8029 8030 if (print_help_list) 8031 { 8032 display_help (); 8033 8034 if (! verbose_flag) 8035 { 8036 printf (_("\nFor bug reporting instructions, please see:\n")); 8037 printf ("%s.\n", bug_report_url); 8038 8039 return (0); 8040 } 8041 8042 /* We do not exit here. Instead we have created a fake input file 8043 called 'help-dummy' which needs to be compiled, and we pass this 8044 on the various sub-processes, along with the --help switch. 8045 Ensure their output appears after ours. */ 8046 fputc ('\n', stdout); 8047 fflush (stdout); 8048 } 8049 8050 if (print_version) 8051 { 8052 printf (_("%s %s%s\n"), progname, pkgversion_string, 8053 version_string); 8054 printf ("Copyright %s 2018 Free Software Foundation, Inc.\n", 8055 _("(C)")); 8056 fputs (_("This is free software; see the source for copying conditions. There is NO\n\ 8057 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), 8058 stdout); 8059 if (! verbose_flag) 8060 return 0; 8061 8062 /* We do not exit here. We use the same mechanism of --help to print 8063 the version of the sub-processes. */ 8064 fputc ('\n', stdout); 8065 fflush (stdout); 8066 } 8067 8068 if (verbose_flag) 8069 { 8070 print_configuration (stderr); 8071 if (n_infiles == 0) 8072 return (0); 8073 } 8074 8075 return 1; 8076 } 8077 8078 /* Figure out what to do with each input file. 8079 Return true if we need to exit early from "main", false otherwise. */ 8080 8081 bool 8082 driver::prepare_infiles () 8083 { 8084 size_t i; 8085 int lang_n_infiles = 0; 8086 8087 if (n_infiles == added_libraries) 8088 fatal_error (input_location, "no input files"); 8089 8090 if (seen_error ()) 8091 /* Early exit needed from main. */ 8092 return true; 8093 8094 /* Make a place to record the compiler output file names 8095 that correspond to the input files. */ 8096 8097 i = n_infiles; 8098 i += lang_specific_extra_outfiles; 8099 outfiles = XCNEWVEC (const char *, i); 8100 8101 /* Record which files were specified explicitly as link input. */ 8102 8103 explicit_link_files = XCNEWVEC (char, n_infiles); 8104 8105 combine_inputs = have_o || flag_wpa; 8106 8107 for (i = 0; (int) i < n_infiles; i++) 8108 { 8109 const char *name = infiles[i].name; 8110 struct compiler *compiler = lookup_compiler (name, 8111 strlen (name), 8112 infiles[i].language); 8113 8114 if (compiler && !(compiler->combinable)) 8115 combine_inputs = false; 8116 8117 if (lang_n_infiles > 0 && compiler != input_file_compiler 8118 && infiles[i].language && infiles[i].language[0] != '*') 8119 infiles[i].incompiler = compiler; 8120 else if (compiler) 8121 { 8122 lang_n_infiles++; 8123 input_file_compiler = compiler; 8124 infiles[i].incompiler = compiler; 8125 } 8126 else 8127 { 8128 /* Since there is no compiler for this input file, assume it is a 8129 linker file. */ 8130 explicit_link_files[i] = 1; 8131 infiles[i].incompiler = NULL; 8132 } 8133 infiles[i].compiled = false; 8134 infiles[i].preprocessed = false; 8135 } 8136 8137 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) 8138 fatal_error (input_location, 8139 "cannot specify -o with -c, -S or -E with multiple files"); 8140 8141 /* No early exit needed from main; we can continue. */ 8142 return false; 8143 } 8144 8145 /* Run the spec machinery on each input file. */ 8146 8147 void 8148 driver::do_spec_on_infiles () const 8149 { 8150 size_t i; 8151 8152 for (i = 0; (int) i < n_infiles; i++) 8153 { 8154 int this_file_error = 0; 8155 8156 /* Tell do_spec what to substitute for %i. */ 8157 8158 input_file_number = i; 8159 set_input (infiles[i].name); 8160 8161 if (infiles[i].compiled) 8162 continue; 8163 8164 /* Use the same thing in %o, unless cp->spec says otherwise. */ 8165 8166 outfiles[i] = gcc_input_filename; 8167 8168 /* Figure out which compiler from the file's suffix. */ 8169 8170 input_file_compiler 8171 = lookup_compiler (infiles[i].name, input_filename_length, 8172 infiles[i].language); 8173 8174 if (input_file_compiler) 8175 { 8176 /* Ok, we found an applicable compiler. Run its spec. */ 8177 8178 if (input_file_compiler->spec[0] == '#') 8179 { 8180 error ("%s: %s compiler not installed on this system", 8181 gcc_input_filename, &input_file_compiler->spec[1]); 8182 this_file_error = 1; 8183 } 8184 else 8185 { 8186 int value; 8187 8188 if (compare_debug) 8189 { 8190 free (debug_check_temp_file[0]); 8191 debug_check_temp_file[0] = NULL; 8192 8193 free (debug_check_temp_file[1]); 8194 debug_check_temp_file[1] = NULL; 8195 } 8196 8197 value = do_spec (input_file_compiler->spec); 8198 infiles[i].compiled = true; 8199 if (value < 0) 8200 this_file_error = 1; 8201 else if (compare_debug && debug_check_temp_file[0]) 8202 { 8203 if (verbose_flag) 8204 inform (UNKNOWN_LOCATION, 8205 "recompiling with -fcompare-debug"); 8206 8207 compare_debug = -compare_debug; 8208 n_switches = n_switches_debug_check[1]; 8209 n_switches_alloc = n_switches_alloc_debug_check[1]; 8210 switches = switches_debug_check[1]; 8211 8212 value = do_spec (input_file_compiler->spec); 8213 8214 compare_debug = -compare_debug; 8215 n_switches = n_switches_debug_check[0]; 8216 n_switches_alloc = n_switches_alloc_debug_check[0]; 8217 switches = switches_debug_check[0]; 8218 8219 if (value < 0) 8220 { 8221 error ("during -fcompare-debug recompilation"); 8222 this_file_error = 1; 8223 } 8224 8225 gcc_assert (debug_check_temp_file[1] 8226 && filename_cmp (debug_check_temp_file[0], 8227 debug_check_temp_file[1])); 8228 8229 if (verbose_flag) 8230 inform (UNKNOWN_LOCATION, "comparing final insns dumps"); 8231 8232 if (compare_files (debug_check_temp_file)) 8233 this_file_error = 1; 8234 } 8235 8236 if (compare_debug) 8237 { 8238 free (debug_check_temp_file[0]); 8239 debug_check_temp_file[0] = NULL; 8240 8241 free (debug_check_temp_file[1]); 8242 debug_check_temp_file[1] = NULL; 8243 } 8244 } 8245 } 8246 8247 /* If this file's name does not contain a recognized suffix, 8248 record it as explicit linker input. */ 8249 8250 else 8251 explicit_link_files[i] = 1; 8252 8253 /* Clear the delete-on-failure queue, deleting the files in it 8254 if this compilation failed. */ 8255 8256 if (this_file_error) 8257 { 8258 delete_failure_queue (); 8259 errorcount++; 8260 } 8261 /* If this compilation succeeded, don't delete those files later. */ 8262 clear_failure_queue (); 8263 } 8264 8265 /* Reset the input file name to the first compile/object file name, for use 8266 with %b in LINK_SPEC. We use the first input file that we can find 8267 a compiler to compile it instead of using infiles.language since for 8268 languages other than C we use aliases that we then lookup later. */ 8269 if (n_infiles > 0) 8270 { 8271 int i; 8272 8273 for (i = 0; i < n_infiles ; i++) 8274 if (infiles[i].incompiler 8275 || (infiles[i].language && infiles[i].language[0] != '*')) 8276 { 8277 set_input (infiles[i].name); 8278 break; 8279 } 8280 } 8281 8282 if (!seen_error ()) 8283 { 8284 /* Make sure INPUT_FILE_NUMBER points to first available open 8285 slot. */ 8286 input_file_number = n_infiles; 8287 if (lang_specific_pre_link ()) 8288 errorcount++; 8289 } 8290 } 8291 8292 /* If we have to run the linker, do it now. */ 8293 8294 void 8295 driver::maybe_run_linker (const char *argv0) const 8296 { 8297 size_t i; 8298 int linker_was_run = 0; 8299 int num_linker_inputs; 8300 8301 /* Determine if there are any linker input files. */ 8302 num_linker_inputs = 0; 8303 for (i = 0; (int) i < n_infiles; i++) 8304 if (explicit_link_files[i] || outfiles[i] != NULL) 8305 num_linker_inputs++; 8306 8307 /* Run ld to link all the compiler output files. */ 8308 8309 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) 8310 { 8311 int tmp = execution_count; 8312 8313 if (! have_c) 8314 { 8315 #if HAVE_LTO_PLUGIN > 0 8316 #if HAVE_LTO_PLUGIN == 2 8317 const char *fno_use_linker_plugin = "fno-use-linker-plugin"; 8318 #else 8319 const char *fuse_linker_plugin = "fuse-linker-plugin"; 8320 #endif 8321 #endif 8322 8323 /* We'll use ld if we can't find collect2. */ 8324 if (! strcmp (linker_name_spec, "collect2")) 8325 { 8326 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); 8327 if (s == NULL) 8328 linker_name_spec = "ld"; 8329 } 8330 8331 #if HAVE_LTO_PLUGIN > 0 8332 #if HAVE_LTO_PLUGIN == 2 8333 if (!switch_matches (fno_use_linker_plugin, 8334 fno_use_linker_plugin 8335 + strlen (fno_use_linker_plugin), 0)) 8336 #else 8337 if (switch_matches (fuse_linker_plugin, 8338 fuse_linker_plugin 8339 + strlen (fuse_linker_plugin), 0)) 8340 #endif 8341 { 8342 char *temp_spec = find_a_file (&exec_prefixes, 8343 LTOPLUGINSONAME, R_OK, 8344 false); 8345 if (!temp_spec) 8346 fatal_error (input_location, 8347 "-fuse-linker-plugin, but %s not found", 8348 LTOPLUGINSONAME); 8349 linker_plugin_file_spec = convert_white_space (temp_spec); 8350 } 8351 #endif 8352 lto_gcc_spec = argv0; 8353 } 8354 8355 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 8356 for collect. */ 8357 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); 8358 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); 8359 8360 if (print_subprocess_help == 1) 8361 { 8362 printf (_("\nLinker options\n==============\n\n")); 8363 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\"" 8364 " to the linker.\n\n")); 8365 fflush (stdout); 8366 } 8367 int value = do_spec (link_command_spec); 8368 if (value < 0) 8369 errorcount = 1; 8370 linker_was_run = (tmp != execution_count); 8371 } 8372 8373 /* If options said don't run linker, 8374 complain about input files to be given to the linker. */ 8375 8376 if (! linker_was_run && !seen_error ()) 8377 for (i = 0; (int) i < n_infiles; i++) 8378 if (explicit_link_files[i] 8379 && !(infiles[i].language && infiles[i].language[0] == '*')) 8380 warning (0, "%s: linker input file unused because linking not done", 8381 outfiles[i]); 8382 } 8383 8384 /* The end of "main". */ 8385 8386 void 8387 driver::final_actions () const 8388 { 8389 /* Delete some or all of the temporary files we made. */ 8390 8391 if (seen_error ()) 8392 delete_failure_queue (); 8393 delete_temp_files (); 8394 8395 if (print_help_list) 8396 { 8397 printf (("\nFor bug reporting instructions, please see:\n")); 8398 printf ("%s\n", bug_report_url); 8399 } 8400 } 8401 8402 /* Determine what the exit code of the driver should be. */ 8403 8404 int 8405 driver::get_exit_code () const 8406 { 8407 return (signal_count != 0 ? 2 8408 : seen_error () ? (pass_exit_codes ? greatest_status : 1) 8409 : 0); 8410 } 8411 8412 /* Find the proper compilation spec for the file name NAME, 8413 whose length is LENGTH. LANGUAGE is the specified language, 8414 or 0 if this file is to be passed to the linker. */ 8415 8416 static struct compiler * 8417 lookup_compiler (const char *name, size_t length, const char *language) 8418 { 8419 struct compiler *cp; 8420 8421 /* If this was specified by the user to be a linker input, indicate that. */ 8422 if (language != 0 && language[0] == '*') 8423 return 0; 8424 8425 /* Otherwise, look for the language, if one is spec'd. */ 8426 if (language != 0) 8427 { 8428 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 8429 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) 8430 { 8431 if (name != NULL && strcmp (name, "-") == 0 8432 && (strcmp (cp->suffix, "@c-header") == 0 8433 || strcmp (cp->suffix, "@c++-header") == 0) 8434 && !have_E) 8435 fatal_error (input_location, 8436 "cannot use %<-%> as input filename for a " 8437 "precompiled header"); 8438 8439 return cp; 8440 } 8441 8442 error ("language %s not recognized", language); 8443 return 0; 8444 } 8445 8446 /* Look for a suffix. */ 8447 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 8448 { 8449 if (/* The suffix `-' matches only the file name `-'. */ 8450 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 8451 || (strlen (cp->suffix) < length 8452 /* See if the suffix matches the end of NAME. */ 8453 && !strcmp (cp->suffix, 8454 name + length - strlen (cp->suffix)) 8455 )) 8456 break; 8457 } 8458 8459 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) 8460 /* Look again, but case-insensitively this time. */ 8461 if (cp < compilers) 8462 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 8463 { 8464 if (/* The suffix `-' matches only the file name `-'. */ 8465 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 8466 || (strlen (cp->suffix) < length 8467 /* See if the suffix matches the end of NAME. */ 8468 && ((!strcmp (cp->suffix, 8469 name + length - strlen (cp->suffix)) 8470 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) 8471 && !strcasecmp (cp->suffix, 8472 name + length - strlen (cp->suffix))) 8473 )) 8474 break; 8475 } 8476 #endif 8477 8478 if (cp >= compilers) 8479 { 8480 if (cp->spec[0] != '@') 8481 /* A non-alias entry: return it. */ 8482 return cp; 8483 8484 /* An alias entry maps a suffix to a language. 8485 Search for the language; pass 0 for NAME and LENGTH 8486 to avoid infinite recursion if language not found. */ 8487 return lookup_compiler (NULL, 0, cp->spec + 1); 8488 } 8489 return 0; 8490 } 8491 8492 static char * 8493 save_string (const char *s, int len) 8494 { 8495 char *result = XNEWVEC (char, len + 1); 8496 8497 gcc_checking_assert (strlen (s) >= (unsigned int) len); 8498 memcpy (result, s, len); 8499 result[len] = 0; 8500 return result; 8501 } 8502 8503 void 8504 pfatal_with_name (const char *name) 8505 { 8506 perror_with_name (name); 8507 delete_temp_files (); 8508 exit (1); 8509 } 8510 8511 static void 8512 perror_with_name (const char *name) 8513 { 8514 error ("%s: %m", name); 8515 } 8516 8517 static inline void 8518 validate_switches_from_spec (const char *spec, bool user) 8519 { 8520 const char *p = spec; 8521 char c; 8522 while ((c = *p++)) 8523 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) 8524 /* We have a switch spec. */ 8525 p = validate_switches (p + 1, user); 8526 } 8527 8528 static void 8529 validate_all_switches (void) 8530 { 8531 struct compiler *comp; 8532 struct spec_list *spec; 8533 8534 for (comp = compilers; comp->spec; comp++) 8535 validate_switches_from_spec (comp->spec, false); 8536 8537 /* Look through the linked list of specs read from the specs file. */ 8538 for (spec = specs; spec; spec = spec->next) 8539 validate_switches_from_spec (*spec->ptr_spec, spec->user_p); 8540 8541 validate_switches_from_spec (link_command_spec, false); 8542 } 8543 8544 /* Look at the switch-name that comes after START 8545 and mark as valid all supplied switches that match it. */ 8546 8547 static const char * 8548 validate_switches (const char *start, bool user_spec) 8549 { 8550 const char *p = start; 8551 const char *atom; 8552 size_t len; 8553 int i; 8554 bool suffix = false; 8555 bool starred = false; 8556 8557 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 8558 8559 next_member: 8560 SKIP_WHITE (); 8561 8562 if (*p == '!') 8563 p++; 8564 8565 SKIP_WHITE (); 8566 if (*p == '.' || *p == ',') 8567 suffix = true, p++; 8568 8569 atom = p; 8570 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' 8571 || *p == ',' || *p == '.' || *p == '@') 8572 p++; 8573 len = p - atom; 8574 8575 if (*p == '*') 8576 starred = true, p++; 8577 8578 SKIP_WHITE (); 8579 8580 if (!suffix) 8581 { 8582 /* Mark all matching switches as valid. */ 8583 for (i = 0; i < n_switches; i++) 8584 if (!strncmp (switches[i].part1, atom, len) 8585 && (starred || switches[i].part1[len] == '\0') 8586 && (switches[i].known || user_spec)) 8587 switches[i].validated = true; 8588 } 8589 8590 if (*p) p++; 8591 if (*p && (p[-1] == '|' || p[-1] == '&')) 8592 goto next_member; 8593 8594 if (*p && p[-1] == ':') 8595 { 8596 while (*p && *p != ';' && *p != '}') 8597 { 8598 if (*p == '%') 8599 { 8600 p++; 8601 if (*p == '{' || *p == '<') 8602 p = validate_switches (p+1, user_spec); 8603 else if (p[0] == 'W' && p[1] == '{') 8604 p = validate_switches (p+2, user_spec); 8605 } 8606 else 8607 p++; 8608 } 8609 8610 if (*p) p++; 8611 if (*p && p[-1] == ';') 8612 goto next_member; 8613 } 8614 8615 return p; 8616 #undef SKIP_WHITE 8617 } 8618 8619 struct mdswitchstr 8620 { 8621 const char *str; 8622 int len; 8623 }; 8624 8625 static struct mdswitchstr *mdswitches; 8626 static int n_mdswitches; 8627 8628 /* Check whether a particular argument was used. The first time we 8629 canonicalize the switches to keep only the ones we care about. */ 8630 8631 class used_arg_t 8632 { 8633 public: 8634 int operator () (const char *p, int len); 8635 void finalize (); 8636 8637 private: 8638 struct mswitchstr 8639 { 8640 const char *str; 8641 const char *replace; 8642 int len; 8643 int rep_len; 8644 }; 8645 8646 mswitchstr *mswitches; 8647 int n_mswitches; 8648 8649 }; 8650 8651 used_arg_t used_arg; 8652 8653 int 8654 used_arg_t::operator () (const char *p, int len) 8655 { 8656 int i, j; 8657 8658 if (!mswitches) 8659 { 8660 struct mswitchstr *matches; 8661 const char *q; 8662 int cnt = 0; 8663 8664 /* Break multilib_matches into the component strings of string 8665 and replacement string. */ 8666 for (q = multilib_matches; *q != '\0'; q++) 8667 if (*q == ';') 8668 cnt++; 8669 8670 matches 8671 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); 8672 i = 0; 8673 q = multilib_matches; 8674 while (*q != '\0') 8675 { 8676 matches[i].str = q; 8677 while (*q != ' ') 8678 { 8679 if (*q == '\0') 8680 { 8681 invalid_matches: 8682 fatal_error (input_location, "multilib spec %qs is invalid", 8683 multilib_matches); 8684 } 8685 q++; 8686 } 8687 matches[i].len = q - matches[i].str; 8688 8689 matches[i].replace = ++q; 8690 while (*q != ';' && *q != '\0') 8691 { 8692 if (*q == ' ') 8693 goto invalid_matches; 8694 q++; 8695 } 8696 matches[i].rep_len = q - matches[i].replace; 8697 i++; 8698 if (*q == ';') 8699 q++; 8700 } 8701 8702 /* Now build a list of the replacement string for switches that we care 8703 about. Make sure we allocate at least one entry. This prevents 8704 xmalloc from calling fatal, and prevents us from re-executing this 8705 block of code. */ 8706 mswitches 8707 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); 8708 for (i = 0; i < n_switches; i++) 8709 if ((switches[i].live_cond & SWITCH_IGNORE) == 0) 8710 { 8711 int xlen = strlen (switches[i].part1); 8712 for (j = 0; j < cnt; j++) 8713 if (xlen == matches[j].len 8714 && ! strncmp (switches[i].part1, matches[j].str, xlen)) 8715 { 8716 mswitches[n_mswitches].str = matches[j].replace; 8717 mswitches[n_mswitches].len = matches[j].rep_len; 8718 mswitches[n_mswitches].replace = (char *) 0; 8719 mswitches[n_mswitches].rep_len = 0; 8720 n_mswitches++; 8721 break; 8722 } 8723 } 8724 8725 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present 8726 on the command line nor any options mutually incompatible with 8727 them. */ 8728 for (i = 0; i < n_mdswitches; i++) 8729 { 8730 const char *r; 8731 8732 for (q = multilib_options; *q != '\0'; *q && q++) 8733 { 8734 while (*q == ' ') 8735 q++; 8736 8737 r = q; 8738 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 8739 || strchr (" /", q[mdswitches[i].len]) == NULL) 8740 { 8741 while (*q != ' ' && *q != '/' && *q != '\0') 8742 q++; 8743 if (*q != '/') 8744 break; 8745 q++; 8746 } 8747 8748 if (*q != ' ' && *q != '\0') 8749 { 8750 while (*r != ' ' && *r != '\0') 8751 { 8752 q = r; 8753 while (*q != ' ' && *q != '/' && *q != '\0') 8754 q++; 8755 8756 if (used_arg (r, q - r)) 8757 break; 8758 8759 if (*q != '/') 8760 { 8761 mswitches[n_mswitches].str = mdswitches[i].str; 8762 mswitches[n_mswitches].len = mdswitches[i].len; 8763 mswitches[n_mswitches].replace = (char *) 0; 8764 mswitches[n_mswitches].rep_len = 0; 8765 n_mswitches++; 8766 break; 8767 } 8768 8769 r = q + 1; 8770 } 8771 break; 8772 } 8773 } 8774 } 8775 } 8776 8777 for (i = 0; i < n_mswitches; i++) 8778 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) 8779 return 1; 8780 8781 return 0; 8782 } 8783 8784 void used_arg_t::finalize () 8785 { 8786 XDELETEVEC (mswitches); 8787 mswitches = NULL; 8788 n_mswitches = 0; 8789 } 8790 8791 8792 static int 8793 default_arg (const char *p, int len) 8794 { 8795 int i; 8796 8797 for (i = 0; i < n_mdswitches; i++) 8798 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) 8799 return 1; 8800 8801 return 0; 8802 } 8803 8804 /* Work out the subdirectory to use based on the options. The format of 8805 multilib_select is a list of elements. Each element is a subdirectory 8806 name followed by a list of options followed by a semicolon. The format 8807 of multilib_exclusions is the same, but without the preceding 8808 directory. First gcc will check the exclusions, if none of the options 8809 beginning with an exclamation point are present, and all of the other 8810 options are present, then we will ignore this completely. Passing 8811 that, gcc will consider each multilib_select in turn using the same 8812 rules for matching the options. If a match is found, that subdirectory 8813 will be used. 8814 A subdirectory name is optionally followed by a colon and the corresponding 8815 multiarch name. */ 8816 8817 static void 8818 set_multilib_dir (void) 8819 { 8820 const char *p; 8821 unsigned int this_path_len; 8822 const char *this_path, *this_arg; 8823 const char *start, *end; 8824 int not_arg; 8825 int ok, ndfltok, first; 8826 8827 n_mdswitches = 0; 8828 start = multilib_defaults; 8829 while (*start == ' ' || *start == '\t') 8830 start++; 8831 while (*start != '\0') 8832 { 8833 n_mdswitches++; 8834 while (*start != ' ' && *start != '\t' && *start != '\0') 8835 start++; 8836 while (*start == ' ' || *start == '\t') 8837 start++; 8838 } 8839 8840 if (n_mdswitches) 8841 { 8842 int i = 0; 8843 8844 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); 8845 for (start = multilib_defaults; *start != '\0'; start = end + 1) 8846 { 8847 while (*start == ' ' || *start == '\t') 8848 start++; 8849 8850 if (*start == '\0') 8851 break; 8852 8853 for (end = start + 1; 8854 *end != ' ' && *end != '\t' && *end != '\0'; end++) 8855 ; 8856 8857 obstack_grow (&multilib_obstack, start, end - start); 8858 obstack_1grow (&multilib_obstack, 0); 8859 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); 8860 mdswitches[i++].len = end - start; 8861 8862 if (*end == '\0') 8863 break; 8864 } 8865 } 8866 8867 p = multilib_exclusions; 8868 while (*p != '\0') 8869 { 8870 /* Ignore newlines. */ 8871 if (*p == '\n') 8872 { 8873 ++p; 8874 continue; 8875 } 8876 8877 /* Check the arguments. */ 8878 ok = 1; 8879 while (*p != ';') 8880 { 8881 if (*p == '\0') 8882 { 8883 invalid_exclusions: 8884 fatal_error (input_location, "multilib exclusions %qs is invalid", 8885 multilib_exclusions); 8886 } 8887 8888 if (! ok) 8889 { 8890 ++p; 8891 continue; 8892 } 8893 8894 this_arg = p; 8895 while (*p != ' ' && *p != ';') 8896 { 8897 if (*p == '\0') 8898 goto invalid_exclusions; 8899 ++p; 8900 } 8901 8902 if (*this_arg != '!') 8903 not_arg = 0; 8904 else 8905 { 8906 not_arg = 1; 8907 ++this_arg; 8908 } 8909 8910 ok = used_arg (this_arg, p - this_arg); 8911 if (not_arg) 8912 ok = ! ok; 8913 8914 if (*p == ' ') 8915 ++p; 8916 } 8917 8918 if (ok) 8919 return; 8920 8921 ++p; 8922 } 8923 8924 first = 1; 8925 p = multilib_select; 8926 8927 /* Append multilib reuse rules if any. With those rules, we can reuse 8928 one multilib for certain different options sets. */ 8929 if (strlen (multilib_reuse) > 0) 8930 p = concat (p, multilib_reuse, NULL); 8931 8932 while (*p != '\0') 8933 { 8934 /* Ignore newlines. */ 8935 if (*p == '\n') 8936 { 8937 ++p; 8938 continue; 8939 } 8940 8941 /* Get the initial path. */ 8942 this_path = p; 8943 while (*p != ' ') 8944 { 8945 if (*p == '\0') 8946 { 8947 invalid_select: 8948 fatal_error (input_location, "multilib select %qs %qs is invalid", 8949 multilib_select, multilib_reuse); 8950 } 8951 ++p; 8952 } 8953 this_path_len = p - this_path; 8954 8955 /* Check the arguments. */ 8956 ok = 1; 8957 ndfltok = 1; 8958 ++p; 8959 while (*p != ';') 8960 { 8961 if (*p == '\0') 8962 goto invalid_select; 8963 8964 if (! ok) 8965 { 8966 ++p; 8967 continue; 8968 } 8969 8970 this_arg = p; 8971 while (*p != ' ' && *p != ';') 8972 { 8973 if (*p == '\0') 8974 goto invalid_select; 8975 ++p; 8976 } 8977 8978 if (*this_arg != '!') 8979 not_arg = 0; 8980 else 8981 { 8982 not_arg = 1; 8983 ++this_arg; 8984 } 8985 8986 /* If this is a default argument, we can just ignore it. 8987 This is true even if this_arg begins with '!'. Beginning 8988 with '!' does not mean that this argument is necessarily 8989 inappropriate for this library: it merely means that 8990 there is a more specific library which uses this 8991 argument. If this argument is a default, we need not 8992 consider that more specific library. */ 8993 ok = used_arg (this_arg, p - this_arg); 8994 if (not_arg) 8995 ok = ! ok; 8996 8997 if (! ok) 8998 ndfltok = 0; 8999 9000 if (default_arg (this_arg, p - this_arg)) 9001 ok = 1; 9002 9003 if (*p == ' ') 9004 ++p; 9005 } 9006 9007 if (ok && first) 9008 { 9009 if (this_path_len != 1 9010 || this_path[0] != '.') 9011 { 9012 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); 9013 char *q; 9014 9015 strncpy (new_multilib_dir, this_path, this_path_len); 9016 new_multilib_dir[this_path_len] = '\0'; 9017 q = strchr (new_multilib_dir, ':'); 9018 if (q != NULL) 9019 *q = '\0'; 9020 multilib_dir = new_multilib_dir; 9021 } 9022 first = 0; 9023 } 9024 9025 if (ndfltok) 9026 { 9027 const char *q = this_path, *end = this_path + this_path_len; 9028 9029 while (q < end && *q != ':') 9030 q++; 9031 if (q < end) 9032 { 9033 const char *q2 = q + 1, *ml_end = end; 9034 char *new_multilib_os_dir; 9035 9036 while (q2 < end && *q2 != ':') 9037 q2++; 9038 if (*q2 == ':') 9039 ml_end = q2; 9040 if (ml_end - q == 1) 9041 multilib_os_dir = xstrdup ("."); 9042 else 9043 { 9044 new_multilib_os_dir = XNEWVEC (char, ml_end - q); 9045 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1); 9046 new_multilib_os_dir[ml_end - q - 1] = '\0'; 9047 multilib_os_dir = new_multilib_os_dir; 9048 } 9049 9050 if (q2 < end && *q2 == ':') 9051 { 9052 char *new_multiarch_dir = XNEWVEC (char, end - q2); 9053 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1); 9054 new_multiarch_dir[end - q2 - 1] = '\0'; 9055 multiarch_dir = new_multiarch_dir; 9056 } 9057 break; 9058 } 9059 } 9060 9061 ++p; 9062 } 9063 9064 if (multilib_dir == NULL && multilib_os_dir != NULL 9065 && strcmp (multilib_os_dir, ".") == 0) 9066 { 9067 free (CONST_CAST (char *, multilib_os_dir)); 9068 multilib_os_dir = NULL; 9069 } 9070 else if (multilib_dir != NULL && multilib_os_dir == NULL) 9071 multilib_os_dir = multilib_dir; 9072 } 9073 9074 /* Print out the multiple library subdirectory selection 9075 information. This prints out a series of lines. Each line looks 9076 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is 9077 required. Only the desired options are printed out, the negative 9078 matches. The options are print without a leading dash. There are 9079 no spaces to make it easy to use the information in the shell. 9080 Each subdirectory is printed only once. This assumes the ordering 9081 generated by the genmultilib script. Also, we leave out ones that match 9082 the exclusions. */ 9083 9084 static void 9085 print_multilib_info (void) 9086 { 9087 const char *p = multilib_select; 9088 const char *last_path = 0, *this_path; 9089 int skip; 9090 unsigned int last_path_len = 0; 9091 9092 while (*p != '\0') 9093 { 9094 skip = 0; 9095 /* Ignore newlines. */ 9096 if (*p == '\n') 9097 { 9098 ++p; 9099 continue; 9100 } 9101 9102 /* Get the initial path. */ 9103 this_path = p; 9104 while (*p != ' ') 9105 { 9106 if (*p == '\0') 9107 { 9108 invalid_select: 9109 fatal_error (input_location, 9110 "multilib select %qs is invalid", multilib_select); 9111 } 9112 9113 ++p; 9114 } 9115 9116 /* When --disable-multilib was used but target defines 9117 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting 9118 with .:: for multiarch configurations) are there just to find 9119 multilib_os_dir, so skip them from output. */ 9120 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':') 9121 skip = 1; 9122 9123 /* Check for matches with the multilib_exclusions. We don't bother 9124 with the '!' in either list. If any of the exclusion rules match 9125 all of its options with the select rule, we skip it. */ 9126 { 9127 const char *e = multilib_exclusions; 9128 const char *this_arg; 9129 9130 while (*e != '\0') 9131 { 9132 int m = 1; 9133 /* Ignore newlines. */ 9134 if (*e == '\n') 9135 { 9136 ++e; 9137 continue; 9138 } 9139 9140 /* Check the arguments. */ 9141 while (*e != ';') 9142 { 9143 const char *q; 9144 int mp = 0; 9145 9146 if (*e == '\0') 9147 { 9148 invalid_exclusion: 9149 fatal_error (input_location, 9150 "multilib exclusion %qs is invalid", 9151 multilib_exclusions); 9152 } 9153 9154 if (! m) 9155 { 9156 ++e; 9157 continue; 9158 } 9159 9160 this_arg = e; 9161 9162 while (*e != ' ' && *e != ';') 9163 { 9164 if (*e == '\0') 9165 goto invalid_exclusion; 9166 ++e; 9167 } 9168 9169 q = p + 1; 9170 while (*q != ';') 9171 { 9172 const char *arg; 9173 int len = e - this_arg; 9174 9175 if (*q == '\0') 9176 goto invalid_select; 9177 9178 arg = q; 9179 9180 while (*q != ' ' && *q != ';') 9181 { 9182 if (*q == '\0') 9183 goto invalid_select; 9184 ++q; 9185 } 9186 9187 if (! strncmp (arg, this_arg, 9188 (len < q - arg) ? q - arg : len) 9189 || default_arg (this_arg, e - this_arg)) 9190 { 9191 mp = 1; 9192 break; 9193 } 9194 9195 if (*q == ' ') 9196 ++q; 9197 } 9198 9199 if (! mp) 9200 m = 0; 9201 9202 if (*e == ' ') 9203 ++e; 9204 } 9205 9206 if (m) 9207 { 9208 skip = 1; 9209 break; 9210 } 9211 9212 if (*e != '\0') 9213 ++e; 9214 } 9215 } 9216 9217 if (! skip) 9218 { 9219 /* If this is a duplicate, skip it. */ 9220 skip = (last_path != 0 9221 && (unsigned int) (p - this_path) == last_path_len 9222 && ! filename_ncmp (last_path, this_path, last_path_len)); 9223 9224 last_path = this_path; 9225 last_path_len = p - this_path; 9226 } 9227 9228 /* If this directory requires any default arguments, we can skip 9229 it. We will already have printed a directory identical to 9230 this one which does not require that default argument. */ 9231 if (! skip) 9232 { 9233 const char *q; 9234 9235 q = p + 1; 9236 while (*q != ';') 9237 { 9238 const char *arg; 9239 9240 if (*q == '\0') 9241 goto invalid_select; 9242 9243 if (*q == '!') 9244 arg = NULL; 9245 else 9246 arg = q; 9247 9248 while (*q != ' ' && *q != ';') 9249 { 9250 if (*q == '\0') 9251 goto invalid_select; 9252 ++q; 9253 } 9254 9255 if (arg != NULL 9256 && default_arg (arg, q - arg)) 9257 { 9258 skip = 1; 9259 break; 9260 } 9261 9262 if (*q == ' ') 9263 ++q; 9264 } 9265 } 9266 9267 if (! skip) 9268 { 9269 const char *p1; 9270 9271 for (p1 = last_path; p1 < p && *p1 != ':'; p1++) 9272 putchar (*p1); 9273 putchar (';'); 9274 } 9275 9276 ++p; 9277 while (*p != ';') 9278 { 9279 int use_arg; 9280 9281 if (*p == '\0') 9282 goto invalid_select; 9283 9284 if (skip) 9285 { 9286 ++p; 9287 continue; 9288 } 9289 9290 use_arg = *p != '!'; 9291 9292 if (use_arg) 9293 putchar ('@'); 9294 9295 while (*p != ' ' && *p != ';') 9296 { 9297 if (*p == '\0') 9298 goto invalid_select; 9299 if (use_arg) 9300 putchar (*p); 9301 ++p; 9302 } 9303 9304 if (*p == ' ') 9305 ++p; 9306 } 9307 9308 if (! skip) 9309 { 9310 /* If there are extra options, print them now. */ 9311 if (multilib_extra && *multilib_extra) 9312 { 9313 int print_at = TRUE; 9314 const char *q; 9315 9316 for (q = multilib_extra; *q != '\0'; q++) 9317 { 9318 if (*q == ' ') 9319 print_at = TRUE; 9320 else 9321 { 9322 if (print_at) 9323 putchar ('@'); 9324 putchar (*q); 9325 print_at = FALSE; 9326 } 9327 } 9328 } 9329 9330 putchar ('\n'); 9331 } 9332 9333 ++p; 9334 } 9335 } 9336 9337 /* getenv built-in spec function. 9338 9339 Returns the value of the environment variable given by its first argument, 9340 concatenated with the second argument. If the variable is not defined, a 9341 fatal error is issued unless such undefs are internally allowed, in which 9342 case the variable name is used as the variable value. */ 9343 9344 static const char * 9345 getenv_spec_function (int argc, const char **argv) 9346 { 9347 const char *value; 9348 const char *varname; 9349 9350 char *result; 9351 char *ptr; 9352 size_t len; 9353 9354 if (argc != 2) 9355 return NULL; 9356 9357 varname = argv[0]; 9358 value = env.get (varname); 9359 9360 if (!value && spec_undefvar_allowed) 9361 value = varname; 9362 9363 if (!value) 9364 fatal_error (input_location, 9365 "environment variable %qs not defined", varname); 9366 9367 /* We have to escape every character of the environment variable so 9368 they are not interpreted as active spec characters. A 9369 particularly painful case is when we are reading a variable 9370 holding a windows path complete with \ separators. */ 9371 len = strlen (value) * 2 + strlen (argv[1]) + 1; 9372 result = XNEWVAR (char, len); 9373 for (ptr = result; *value; ptr += 2) 9374 { 9375 ptr[0] = '\\'; 9376 ptr[1] = *value++; 9377 } 9378 9379 strcpy (ptr, argv[1]); 9380 9381 return result; 9382 } 9383 9384 /* if-exists built-in spec function. 9385 9386 Checks to see if the file specified by the absolute pathname in 9387 ARGS exists. Returns that pathname if found. 9388 9389 The usual use for this function is to check for a library file 9390 (whose name has been expanded with %s). */ 9391 9392 static const char * 9393 if_exists_spec_function (int argc, const char **argv) 9394 { 9395 /* Must have only one argument. */ 9396 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 9397 return argv[0]; 9398 9399 return NULL; 9400 } 9401 9402 /* if-exists-else built-in spec function. 9403 9404 This is like if-exists, but takes an additional argument which 9405 is returned if the first argument does not exist. */ 9406 9407 static const char * 9408 if_exists_else_spec_function (int argc, const char **argv) 9409 { 9410 /* Must have exactly two arguments. */ 9411 if (argc != 2) 9412 return NULL; 9413 9414 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 9415 return argv[0]; 9416 9417 return argv[1]; 9418 } 9419 9420 /* sanitize built-in spec function. 9421 9422 This returns non-NULL, if sanitizing address, thread or 9423 any of the undefined behavior sanitizers. */ 9424 9425 static const char * 9426 sanitize_spec_function (int argc, const char **argv) 9427 { 9428 if (argc != 1) 9429 return NULL; 9430 9431 if (strcmp (argv[0], "address") == 0) 9432 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL; 9433 if (strcmp (argv[0], "kernel-address") == 0) 9434 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL; 9435 if (strcmp (argv[0], "thread") == 0) 9436 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL; 9437 if (strcmp (argv[0], "undefined") == 0) 9438 return ((flag_sanitize 9439 & (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT)) 9440 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL; 9441 if (strcmp (argv[0], "leak") == 0) 9442 return ((flag_sanitize 9443 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD)) 9444 == SANITIZE_LEAK) ? "" : NULL; 9445 return NULL; 9446 } 9447 9448 /* replace-outfile built-in spec function. 9449 9450 This looks for the first argument in the outfiles array's name and 9451 replaces it with the second argument. */ 9452 9453 static const char * 9454 replace_outfile_spec_function (int argc, const char **argv) 9455 { 9456 int i; 9457 /* Must have exactly two arguments. */ 9458 if (argc != 2) 9459 abort (); 9460 9461 for (i = 0; i < n_infiles; i++) 9462 { 9463 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) 9464 outfiles[i] = xstrdup (argv[1]); 9465 } 9466 return NULL; 9467 } 9468 9469 /* remove-outfile built-in spec function. 9470 * 9471 * This looks for the first argument in the outfiles array's name and 9472 * removes it. */ 9473 9474 static const char * 9475 remove_outfile_spec_function (int argc, const char **argv) 9476 { 9477 int i; 9478 /* Must have exactly one argument. */ 9479 if (argc != 1) 9480 abort (); 9481 9482 for (i = 0; i < n_infiles; i++) 9483 { 9484 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) 9485 outfiles[i] = NULL; 9486 } 9487 return NULL; 9488 } 9489 9490 /* Given two version numbers, compares the two numbers. 9491 A version number must match the regular expression 9492 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* 9493 */ 9494 static int 9495 compare_version_strings (const char *v1, const char *v2) 9496 { 9497 int rresult; 9498 regex_t r; 9499 9500 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", 9501 REG_EXTENDED | REG_NOSUB) != 0) 9502 abort (); 9503 rresult = regexec (&r, v1, 0, NULL, 0); 9504 if (rresult == REG_NOMATCH) 9505 fatal_error (input_location, "invalid version number %qs", v1); 9506 else if (rresult != 0) 9507 abort (); 9508 rresult = regexec (&r, v2, 0, NULL, 0); 9509 if (rresult == REG_NOMATCH) 9510 fatal_error (input_location, "invalid version number %qs", v2); 9511 else if (rresult != 0) 9512 abort (); 9513 9514 return strverscmp (v1, v2); 9515 } 9516 9517 9518 /* version_compare built-in spec function. 9519 9520 This takes an argument of the following form: 9521 9522 <comparison-op> <arg1> [<arg2>] <switch> <result> 9523 9524 and produces "result" if the comparison evaluates to true, 9525 and nothing if it doesn't. 9526 9527 The supported <comparison-op> values are: 9528 9529 >= true if switch is a later (or same) version than arg1 9530 !> opposite of >= 9531 < true if switch is an earlier version than arg1 9532 !< opposite of < 9533 >< true if switch is arg1 or later, and earlier than arg2 9534 <> true if switch is earlier than arg1 or is arg2 or later 9535 9536 If the switch is not present, the condition is false unless 9537 the first character of the <comparison-op> is '!'. 9538 9539 For example, 9540 %:version-compare(>= 10.3 mmacosx-version-min= -lmx) 9541 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ 9542 9543 static const char * 9544 version_compare_spec_function (int argc, const char **argv) 9545 { 9546 int comp1, comp2; 9547 size_t switch_len; 9548 const char *switch_value = NULL; 9549 int nargs = 1, i; 9550 bool result; 9551 9552 if (argc < 3) 9553 fatal_error (input_location, "too few arguments to %%:version-compare"); 9554 if (argv[0][0] == '\0') 9555 abort (); 9556 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') 9557 nargs = 2; 9558 if (argc != nargs + 3) 9559 fatal_error (input_location, "too many arguments to %%:version-compare"); 9560 9561 switch_len = strlen (argv[nargs + 1]); 9562 for (i = 0; i < n_switches; i++) 9563 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) 9564 && check_live_switch (i, switch_len)) 9565 switch_value = switches[i].part1 + switch_len; 9566 9567 if (switch_value == NULL) 9568 comp1 = comp2 = -1; 9569 else 9570 { 9571 comp1 = compare_version_strings (switch_value, argv[1]); 9572 if (nargs == 2) 9573 comp2 = compare_version_strings (switch_value, argv[2]); 9574 else 9575 comp2 = -1; /* This value unused. */ 9576 } 9577 9578 switch (argv[0][0] << 8 | argv[0][1]) 9579 { 9580 case '>' << 8 | '=': 9581 result = comp1 >= 0; 9582 break; 9583 case '!' << 8 | '<': 9584 result = comp1 >= 0 || switch_value == NULL; 9585 break; 9586 case '<' << 8: 9587 result = comp1 < 0; 9588 break; 9589 case '!' << 8 | '>': 9590 result = comp1 < 0 || switch_value == NULL; 9591 break; 9592 case '>' << 8 | '<': 9593 result = comp1 >= 0 && comp2 < 0; 9594 break; 9595 case '<' << 8 | '>': 9596 result = comp1 < 0 || comp2 >= 0; 9597 break; 9598 9599 default: 9600 fatal_error (input_location, 9601 "unknown operator %qs in %%:version-compare", argv[0]); 9602 } 9603 if (! result) 9604 return NULL; 9605 9606 return argv[nargs + 2]; 9607 } 9608 9609 /* %:include builtin spec function. This differs from %include in that it 9610 can be nested inside a spec, and thus be conditionalized. It takes 9611 one argument, the filename, and looks for it in the startfile path. 9612 The result is always NULL, i.e. an empty expansion. */ 9613 9614 static const char * 9615 include_spec_function (int argc, const char **argv) 9616 { 9617 char *file; 9618 9619 if (argc != 1) 9620 abort (); 9621 9622 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true); 9623 read_specs (file ? file : argv[0], false, false); 9624 9625 return NULL; 9626 } 9627 9628 /* %:find-file spec function. This function replaces its argument by 9629 the file found through find_file, that is the -print-file-name gcc 9630 program option. */ 9631 static const char * 9632 find_file_spec_function (int argc, const char **argv) 9633 { 9634 const char *file; 9635 9636 if (argc != 1) 9637 abort (); 9638 9639 file = find_file (argv[0]); 9640 return file; 9641 } 9642 9643 9644 /* %:find-plugindir spec function. This function replaces its argument 9645 by the -iplugindir=<dir> option. `dir' is found through find_file, that 9646 is the -print-file-name gcc program option. */ 9647 static const char * 9648 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED) 9649 { 9650 const char *option; 9651 9652 if (argc != 0) 9653 abort (); 9654 9655 option = concat ("-iplugindir=", find_file ("plugin"), NULL); 9656 return option; 9657 } 9658 9659 9660 /* %:print-asm-header spec function. Print a banner to say that the 9661 following output is from the assembler. */ 9662 9663 static const char * 9664 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, 9665 const char **argv ATTRIBUTE_UNUSED) 9666 { 9667 printf (_("Assembler options\n=================\n\n")); 9668 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n")); 9669 fflush (stdout); 9670 return NULL; 9671 } 9672 9673 /* Get a random number for -frandom-seed */ 9674 9675 static unsigned HOST_WIDE_INT 9676 get_random_number (void) 9677 { 9678 unsigned HOST_WIDE_INT ret = 0; 9679 int fd; 9680 9681 fd = open ("/dev/urandom", O_RDONLY); 9682 if (fd >= 0) 9683 { 9684 read (fd, &ret, sizeof (HOST_WIDE_INT)); 9685 close (fd); 9686 if (ret) 9687 return ret; 9688 } 9689 9690 /* Get some more or less random data. */ 9691 #ifdef HAVE_GETTIMEOFDAY 9692 { 9693 struct timeval tv; 9694 9695 gettimeofday (&tv, NULL); 9696 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000; 9697 } 9698 #else 9699 { 9700 time_t now = time (NULL); 9701 9702 if (now != (time_t)-1) 9703 ret = (unsigned) now; 9704 } 9705 #endif 9706 9707 return ret ^ getpid (); 9708 } 9709 9710 /* %:compare-debug-dump-opt spec function. Save the last argument, 9711 expected to be the last -fdump-final-insns option, or generate a 9712 temporary. */ 9713 9714 static const char * 9715 compare_debug_dump_opt_spec_function (int arg, 9716 const char **argv ATTRIBUTE_UNUSED) 9717 { 9718 char *ret; 9719 char *name; 9720 int which; 9721 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; 9722 9723 if (arg != 0) 9724 fatal_error (input_location, 9725 "too many arguments to %%:compare-debug-dump-opt"); 9726 9727 do_spec_2 ("%{fdump-final-insns=*:%*}"); 9728 do_spec_1 (" ", 0, NULL); 9729 9730 if (argbuf.length () > 0 9731 && strcmp (argv[argbuf.length () - 1], ".")) 9732 { 9733 if (!compare_debug) 9734 return NULL; 9735 9736 name = xstrdup (argv[argbuf.length () - 1]); 9737 ret = NULL; 9738 } 9739 else 9740 { 9741 const char *ext = NULL; 9742 9743 if (argbuf.length () > 0) 9744 { 9745 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}"); 9746 ext = ".gkd"; 9747 } 9748 else if (!compare_debug) 9749 return NULL; 9750 else 9751 do_spec_2 ("%g.gkd"); 9752 9753 do_spec_1 (" ", 0, NULL); 9754 9755 gcc_assert (argbuf.length () > 0); 9756 9757 name = concat (argbuf.last (), ext, NULL); 9758 9759 ret = concat ("-fdump-final-insns=", name, NULL); 9760 } 9761 9762 which = compare_debug < 0; 9763 debug_check_temp_file[which] = name; 9764 9765 if (!which) 9766 { 9767 unsigned HOST_WIDE_INT value = get_random_number (); 9768 9769 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); 9770 } 9771 9772 if (*random_seed) 9773 { 9774 char *tmp = ret; 9775 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ", 9776 ret, NULL); 9777 free (tmp); 9778 } 9779 9780 if (which) 9781 *random_seed = 0; 9782 9783 return ret; 9784 } 9785 9786 static const char *debug_auxbase_opt; 9787 9788 /* %:compare-debug-self-opt spec function. Expands to the options 9789 that are to be passed in the second compilation of 9790 compare-debug. */ 9791 9792 static const char * 9793 compare_debug_self_opt_spec_function (int arg, 9794 const char **argv ATTRIBUTE_UNUSED) 9795 { 9796 if (arg != 0) 9797 fatal_error (input_location, 9798 "too many arguments to %%:compare-debug-self-opt"); 9799 9800 if (compare_debug >= 0) 9801 return NULL; 9802 9803 do_spec_2 ("%{c|S:%{o*:%*}}"); 9804 do_spec_1 (" ", 0, NULL); 9805 9806 if (argbuf.length () > 0) 9807 debug_auxbase_opt = concat ("-auxbase-strip ", 9808 argbuf.last (), 9809 NULL); 9810 else 9811 debug_auxbase_opt = NULL; 9812 9813 return concat ("\ 9814 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \ 9815 %<fdump-final-insns=* -w -S -o %j \ 9816 %{!fcompare-debug-second:-fcompare-debug-second} \ 9817 ", compare_debug_opt, NULL); 9818 } 9819 9820 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase 9821 options that are to be passed in the second compilation of 9822 compare-debug. It expects, as an argument, the basename of the 9823 current input file name, with the .gk suffix appended to it. */ 9824 9825 static const char * 9826 compare_debug_auxbase_opt_spec_function (int arg, 9827 const char **argv) 9828 { 9829 char *name; 9830 int len; 9831 9832 if (arg == 0) 9833 fatal_error (input_location, 9834 "too few arguments to %%:compare-debug-auxbase-opt"); 9835 9836 if (arg != 1) 9837 fatal_error (input_location, 9838 "too many arguments to %%:compare-debug-auxbase-opt"); 9839 9840 if (compare_debug >= 0) 9841 return NULL; 9842 9843 len = strlen (argv[0]); 9844 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0) 9845 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt " 9846 "does not end in .gk"); 9847 9848 if (debug_auxbase_opt) 9849 return debug_auxbase_opt; 9850 9851 #define OPT "-auxbase " 9852 9853 len -= 3; 9854 name = (char*) xmalloc (sizeof (OPT) + len); 9855 memcpy (name, OPT, sizeof (OPT) - 1); 9856 memcpy (name + sizeof (OPT) - 1, argv[0], len); 9857 name[sizeof (OPT) - 1 + len] = '\0'; 9858 9859 #undef OPT 9860 9861 return name; 9862 } 9863 9864 /* %:pass-through-libs spec function. Finds all -l options and input 9865 file names in the lib spec passed to it, and makes a list of them 9866 prepended with the plugin option to cause them to be passed through 9867 to the final link after all the new object files have been added. */ 9868 9869 const char * 9870 pass_through_libs_spec_func (int argc, const char **argv) 9871 { 9872 char *prepended = xstrdup (" "); 9873 int n; 9874 /* Shlemiel the painter's algorithm. Innately horrible, but at least 9875 we know that there will never be more than a handful of strings to 9876 concat, and it's only once per run, so it's not worth optimising. */ 9877 for (n = 0; n < argc; n++) 9878 { 9879 char *old = prepended; 9880 /* Anything that isn't an option is a full path to an output 9881 file; pass it through if it ends in '.a'. Among options, 9882 pass only -l. */ 9883 if (argv[n][0] == '-' && argv[n][1] == 'l') 9884 { 9885 const char *lopt = argv[n] + 2; 9886 /* Handle both joined and non-joined -l options. If for any 9887 reason there's a trailing -l with no joined or following 9888 arg just discard it. */ 9889 if (!*lopt && ++n >= argc) 9890 break; 9891 else if (!*lopt) 9892 lopt = argv[n]; 9893 prepended = concat (prepended, "-plugin-opt=-pass-through=-l", 9894 lopt, " ", NULL); 9895 } 9896 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2)) 9897 { 9898 prepended = concat (prepended, "-plugin-opt=-pass-through=", 9899 argv[n], " ", NULL); 9900 } 9901 if (prepended != old) 9902 free (old); 9903 } 9904 return prepended; 9905 } 9906 9907 /* %:replace-extension spec function. Replaces the extension of the 9908 first argument with the second argument. */ 9909 9910 const char * 9911 replace_extension_spec_func (int argc, const char **argv) 9912 { 9913 char *name; 9914 char *p; 9915 char *result; 9916 int i; 9917 9918 if (argc != 2) 9919 fatal_error (input_location, "too few arguments to %%:replace-extension"); 9920 9921 name = xstrdup (argv[0]); 9922 9923 for (i = strlen (name) - 1; i >= 0; i--) 9924 if (IS_DIR_SEPARATOR (name[i])) 9925 break; 9926 9927 p = strrchr (name + i + 1, '.'); 9928 if (p != NULL) 9929 *p = '\0'; 9930 9931 result = concat (name, argv[1], NULL); 9932 9933 free (name); 9934 return result; 9935 } 9936 9937 /* Returns "" if ARGV[ARGC - 2] is greater than ARGV[ARGC-1]. 9938 Otherwise, return NULL. */ 9939 9940 static const char * 9941 greater_than_spec_func (int argc, const char **argv) 9942 { 9943 char *converted; 9944 9945 if (argc == 1) 9946 return NULL; 9947 9948 gcc_assert (argc >= 2); 9949 9950 long arg = strtol (argv[argc - 2], &converted, 10); 9951 gcc_assert (converted != argv[argc - 2]); 9952 9953 long lim = strtol (argv[argc - 1], &converted, 10); 9954 gcc_assert (converted != argv[argc - 1]); 9955 9956 if (arg > lim) 9957 return ""; 9958 9959 return NULL; 9960 } 9961 9962 /* Returns "" if debug_info_level is greater than ARGV[ARGC-1]. 9963 Otherwise, return NULL. */ 9964 9965 static const char * 9966 debug_level_greater_than_spec_func (int argc, const char **argv) 9967 { 9968 char *converted; 9969 9970 if (argc != 1) 9971 fatal_error (input_location, 9972 "wrong number of arguments to %%:debug-level-gt"); 9973 9974 long arg = strtol (argv[0], &converted, 10); 9975 gcc_assert (converted != argv[0]); 9976 9977 if (debug_info_level > arg) 9978 return ""; 9979 9980 return NULL; 9981 } 9982 9983 /* Insert backslash before spaces in ORIG (usually a file path), to 9984 avoid being broken by spec parser. 9985 9986 This function is needed as do_spec_1 treats white space (' ' and '\t') 9987 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so, 9988 the file name should be treated as a single argument rather than being 9989 broken into multiple. Solution is to insert '\\' before the space in a 9990 file name. 9991 9992 This function converts and only converts all occurrence of ' ' 9993 to '\\' + ' ' and '\t' to '\\' + '\t'. For example: 9994 "a b" -> "a\\ b" 9995 "a b" -> "a\\ \\ b" 9996 "a\tb" -> "a\\\tb" 9997 "a\\ b" -> "a\\\\ b" 9998 9999 orig: input null-terminating string that was allocated by xalloc. The 10000 memory it points to might be freed in this function. Behavior undefined 10001 if ORIG wasn't xalloced or was freed already at entry. 10002 10003 Return: ORIG if no conversion needed. Otherwise a newly allocated string 10004 that was converted from ORIG. */ 10005 10006 static char * 10007 convert_white_space (char *orig) 10008 { 10009 int len, number_of_space = 0; 10010 10011 for (len = 0; orig[len]; len++) 10012 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++; 10013 10014 if (number_of_space) 10015 { 10016 char *new_spec = (char *) xmalloc (len + number_of_space + 1); 10017 int j, k; 10018 for (j = 0, k = 0; j <= len; j++, k++) 10019 { 10020 if (orig[j] == ' ' || orig[j] == '\t') 10021 new_spec[k++] = '\\'; 10022 new_spec[k] = orig[j]; 10023 } 10024 free (orig); 10025 return new_spec; 10026 } 10027 else 10028 return orig; 10029 } 10030 10031 static void 10032 path_prefix_reset (path_prefix *prefix) 10033 { 10034 struct prefix_list *iter, *next; 10035 iter = prefix->plist; 10036 while (iter) 10037 { 10038 next = iter->next; 10039 free (const_cast <char *> (iter->prefix)); 10040 XDELETE (iter); 10041 iter = next; 10042 } 10043 prefix->plist = 0; 10044 prefix->max_len = 0; 10045 } 10046 10047 /* Restore all state within gcc.c to the initial state, so that the driver 10048 code can be safely re-run in-process. 10049 10050 Many const char * variables are referenced by static specs (see 10051 INIT_STATIC_SPEC above). These variables are restored to their default 10052 values by a simple loop over the static specs. 10053 10054 For other variables, we directly restore them all to their initial 10055 values (often implicitly 0). 10056 10057 Free the various obstacks in this file, along with "opts_obstack" 10058 from opts.c. 10059 10060 This function also restores any environment variables that were changed. */ 10061 10062 void 10063 driver::finalize () 10064 { 10065 env.restore (); 10066 params_c_finalize (); 10067 diagnostic_finish (global_dc); 10068 10069 is_cpp_driver = 0; 10070 at_file_supplied = 0; 10071 print_help_list = 0; 10072 print_version = 0; 10073 verbose_only_flag = 0; 10074 print_subprocess_help = 0; 10075 use_ld = NULL; 10076 report_times_to_file = NULL; 10077 target_system_root = DEFAULT_TARGET_SYSTEM_ROOT; 10078 target_system_root_changed = 0; 10079 target_sysroot_suffix = 0; 10080 target_sysroot_hdrs_suffix = 0; 10081 save_temps_flag = SAVE_TEMPS_NONE; 10082 save_temps_prefix = 0; 10083 save_temps_length = 0; 10084 spec_machine = DEFAULT_TARGET_MACHINE; 10085 greatest_status = 1; 10086 10087 finalize_options_struct (&global_options); 10088 finalize_options_struct (&global_options_set); 10089 10090 obstack_free (&obstack, NULL); 10091 obstack_free (&opts_obstack, NULL); /* in opts.c */ 10092 obstack_free (&collect_obstack, NULL); 10093 10094 link_command_spec = LINK_COMMAND_SPEC; 10095 10096 obstack_free (&multilib_obstack, NULL); 10097 10098 user_specs_head = NULL; 10099 user_specs_tail = NULL; 10100 10101 /* Within the "compilers" vec, the fields "suffix" and "spec" were 10102 statically allocated for the default compilers, but dynamically 10103 allocated for additional compilers. Delete them for the latter. */ 10104 for (int i = n_default_compilers; i < n_compilers; i++) 10105 { 10106 free (const_cast <char *> (compilers[i].suffix)); 10107 free (const_cast <char *> (compilers[i].spec)); 10108 } 10109 XDELETEVEC (compilers); 10110 compilers = NULL; 10111 n_compilers = 0; 10112 10113 linker_options.truncate (0); 10114 assembler_options.truncate (0); 10115 preprocessor_options.truncate (0); 10116 10117 path_prefix_reset (&exec_prefixes); 10118 path_prefix_reset (&startfile_prefixes); 10119 path_prefix_reset (&include_prefixes); 10120 10121 machine_suffix = 0; 10122 just_machine_suffix = 0; 10123 gcc_exec_prefix = 0; 10124 gcc_libexec_prefix = 0; 10125 md_exec_prefix = MD_EXEC_PREFIX; 10126 md_startfile_prefix = MD_STARTFILE_PREFIX; 10127 md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; 10128 multilib_dir = 0; 10129 multilib_os_dir = 0; 10130 multiarch_dir = 0; 10131 10132 /* Free any specs dynamically-allocated by set_spec. 10133 These will be at the head of the list, before the 10134 statically-allocated ones. */ 10135 if (specs) 10136 { 10137 while (specs != static_specs) 10138 { 10139 spec_list *next = specs->next; 10140 free (const_cast <char *> (specs->name)); 10141 XDELETE (specs); 10142 specs = next; 10143 } 10144 specs = 0; 10145 } 10146 for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++) 10147 { 10148 spec_list *sl = &static_specs[i]; 10149 if (sl->alloc_p) 10150 { 10151 if (0) 10152 free (const_cast <char *> (*(sl->ptr_spec))); 10153 sl->alloc_p = false; 10154 } 10155 *(sl->ptr_spec) = sl->default_ptr; 10156 } 10157 #ifdef EXTRA_SPECS 10158 extra_specs = NULL; 10159 #endif 10160 10161 processing_spec_function = 0; 10162 10163 argbuf.truncate (0); 10164 10165 have_c = 0; 10166 have_o = 0; 10167 10168 temp_names = NULL; 10169 execution_count = 0; 10170 signal_count = 0; 10171 10172 temp_filename = NULL; 10173 temp_filename_length = 0; 10174 always_delete_queue = NULL; 10175 failure_delete_queue = NULL; 10176 10177 XDELETEVEC (switches); 10178 switches = NULL; 10179 n_switches = 0; 10180 n_switches_alloc = 0; 10181 10182 compare_debug = 0; 10183 compare_debug_second = 0; 10184 compare_debug_opt = NULL; 10185 for (int i = 0; i < 2; i++) 10186 { 10187 switches_debug_check[i] = NULL; 10188 n_switches_debug_check[i] = 0; 10189 n_switches_alloc_debug_check[i] = 0; 10190 debug_check_temp_file[i] = NULL; 10191 } 10192 10193 XDELETEVEC (infiles); 10194 infiles = NULL; 10195 n_infiles = 0; 10196 n_infiles_alloc = 0; 10197 10198 combine_inputs = false; 10199 added_libraries = 0; 10200 XDELETEVEC (outfiles); 10201 outfiles = NULL; 10202 spec_lang = 0; 10203 last_language_n_infiles = 0; 10204 gcc_input_filename = NULL; 10205 input_file_number = 0; 10206 input_filename_length = 0; 10207 basename_length = 0; 10208 suffixed_basename_length = 0; 10209 input_basename = NULL; 10210 input_suffix = NULL; 10211 /* We don't need to purge "input_stat", just to unset "input_stat_set". */ 10212 input_stat_set = 0; 10213 input_file_compiler = NULL; 10214 arg_going = 0; 10215 delete_this_arg = 0; 10216 this_is_output_file = 0; 10217 this_is_library_file = 0; 10218 this_is_linker_script = 0; 10219 input_from_pipe = 0; 10220 suffix_subst = NULL; 10221 10222 mdswitches = NULL; 10223 n_mdswitches = 0; 10224 10225 debug_auxbase_opt = NULL; 10226 10227 used_arg.finalize (); 10228 } 10229 10230 /* PR jit/64810. 10231 Targets can provide configure-time default options in 10232 OPTION_DEFAULT_SPECS. The jit needs to access these, but 10233 they are expressed in the spec language. 10234 10235 Run just enough of the driver to be able to expand these 10236 specs, and then call the callback CB on each 10237 such option. The options strings are *without* a leading 10238 '-' character e.g. ("march=x86-64"). Finally, clean up. */ 10239 10240 void 10241 driver_get_configure_time_options (void (*cb) (const char *option, 10242 void *user_data), 10243 void *user_data) 10244 { 10245 size_t i; 10246 10247 obstack_init (&obstack); 10248 init_opts_obstack (); 10249 n_switches = 0; 10250 10251 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) 10252 do_option_spec (option_default_specs[i].name, 10253 option_default_specs[i].spec); 10254 10255 for (i = 0; (int) i < n_switches; i++) 10256 { 10257 gcc_assert (switches[i].part1); 10258 (*cb) (switches[i].part1, user_data); 10259 } 10260 10261 obstack_free (&opts_obstack, NULL); 10262 obstack_free (&obstack, NULL); 10263 n_switches = 0; 10264 } 10265