1 /* Parse options for the GNU linker. 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004, 2005 4 Free Software Foundation, Inc. 5 6 This file is part of GLD, the Gnu Linker. 7 8 GLD is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GLD is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GLD; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23 #include "config.h" 24 #include "bfd.h" 25 #include "sysdep.h" 26 #include "libiberty.h" 27 #include <stdio.h> 28 #include <string.h> 29 #include "safe-ctype.h" 30 #include "getopt.h" 31 #include "bfdlink.h" 32 #include "ld.h" 33 #include "ldmain.h" 34 #include "ldmisc.h" 35 #include "ldexp.h" 36 #include "ldlang.h" 37 #include <ldgram.h> 38 #include "ldlex.h" 39 #include "ldfile.h" 40 #include "ldver.h" 41 #include "ldemul.h" 42 #include "demangle.h" 43 44 #ifndef PATH_SEPARATOR 45 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 46 #define PATH_SEPARATOR ';' 47 #else 48 #define PATH_SEPARATOR ':' 49 #endif 50 #endif 51 52 /* Somewhere above, sys/stat.h got included . . . . */ 53 #if !defined(S_ISDIR) && defined(S_IFDIR) 54 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 55 #endif 56 57 static void set_default_dirlist (char *); 58 static void set_section_start (char *, char *); 59 static void set_segment_start (const char *, char *); 60 static void help (void); 61 62 /* Non-zero if we are processing a --defsym from the command line. */ 63 int parsing_defsym = 0; 64 65 /* Codes used for the long options with no short synonyms. 150 isn't 66 special; it's just an arbitrary non-ASCII char value. */ 67 enum option_values 68 { 69 OPTION_ASSERT = 150, 70 OPTION_CALL_SHARED, 71 OPTION_CREF, 72 OPTION_DEFSYM, 73 OPTION_DEMANGLE, 74 OPTION_DYNAMIC_LINKER, 75 OPTION_SYSROOT, 76 OPTION_EB, 77 OPTION_EL, 78 OPTION_EMBEDDED_RELOCS, 79 OPTION_EXPORT_DYNAMIC, 80 OPTION_HELP, 81 OPTION_IGNORE, 82 OPTION_MAP, 83 OPTION_NO_DEMANGLE, 84 OPTION_NO_KEEP_MEMORY, 85 OPTION_NO_WARN_MISMATCH, 86 OPTION_NOINHIBIT_EXEC, 87 OPTION_NON_SHARED, 88 OPTION_NO_WHOLE_ARCHIVE, 89 OPTION_OFORMAT, 90 OPTION_RELAX, 91 OPTION_RETAIN_SYMBOLS_FILE, 92 OPTION_RPATH, 93 OPTION_RPATH_LINK, 94 OPTION_SHARED, 95 OPTION_SONAME, 96 OPTION_SORT_COMMON, 97 OPTION_SORT_SECTION, 98 OPTION_STATS, 99 OPTION_SYMBOLIC, 100 OPTION_TASK_LINK, 101 OPTION_TBSS, 102 OPTION_TDATA, 103 OPTION_TTEXT, 104 OPTION_TRADITIONAL_FORMAT, 105 OPTION_UR, 106 OPTION_VERBOSE, 107 OPTION_VERSION, 108 OPTION_VERSION_SCRIPT, 109 OPTION_VERSION_EXPORTS_SECTION, 110 OPTION_WARN_COMMON, 111 OPTION_WARN_CONSTRUCTORS, 112 OPTION_WARN_FATAL, 113 OPTION_WARN_MULTIPLE_GP, 114 OPTION_WARN_ONCE, 115 OPTION_WARN_SECTION_ALIGN, 116 OPTION_SPLIT_BY_RELOC, 117 OPTION_SPLIT_BY_FILE , 118 OPTION_WHOLE_ARCHIVE, 119 OPTION_ADD_NEEDED, 120 OPTION_NO_ADD_NEEDED, 121 OPTION_AS_NEEDED, 122 OPTION_NO_AS_NEEDED, 123 OPTION_WRAP, 124 OPTION_FORCE_EXE_SUFFIX, 125 OPTION_GC_SECTIONS, 126 OPTION_NO_GC_SECTIONS, 127 OPTION_HASH_SIZE, 128 OPTION_CHECK_SECTIONS, 129 OPTION_NO_CHECK_SECTIONS, 130 OPTION_NO_UNDEFINED, 131 OPTION_INIT, 132 OPTION_FINI, 133 OPTION_SECTION_START, 134 OPTION_UNIQUE, 135 OPTION_TARGET_HELP, 136 OPTION_ALLOW_SHLIB_UNDEFINED, 137 OPTION_NO_ALLOW_SHLIB_UNDEFINED, 138 OPTION_ALLOW_MULTIPLE_DEFINITION, 139 OPTION_NO_UNDEFINED_VERSION, 140 OPTION_DEFAULT_SYMVER, 141 OPTION_DEFAULT_IMPORTED_SYMVER, 142 OPTION_DISCARD_NONE, 143 OPTION_SPARE_DYNAMIC_TAGS, 144 OPTION_NO_DEFINE_COMMON, 145 OPTION_NOSTDLIB, 146 OPTION_NO_OMAGIC, 147 OPTION_STRIP_DISCARDED, 148 OPTION_NO_STRIP_DISCARDED, 149 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, 150 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, 151 OPTION_PIE, 152 OPTION_NOPIE, 153 OPTION_UNRESOLVED_SYMBOLS, 154 OPTION_WARN_UNRESOLVED_SYMBOLS, 155 OPTION_ERROR_UNRESOLVED_SYMBOLS, 156 OPTION_WARN_SHARED_TEXTREL, 157 OPTION_REDUCE_MEMORY_OVERHEADS 158 }; 159 160 /* The long options. This structure is used for both the option 161 parsing and the help text. */ 162 163 struct ld_option 164 { 165 /* The long option information. */ 166 struct option opt; 167 /* The short option with the same meaning ('\0' if none). */ 168 char shortopt; 169 /* The name of the argument (NULL if none). */ 170 const char *arg; 171 /* The documentation string. If this is NULL, this is a synonym for 172 the previous option. */ 173 const char *doc; 174 enum { 175 /* Use one dash before long option name. */ 176 ONE_DASH, 177 /* Use two dashes before long option name. */ 178 TWO_DASHES, 179 /* Only accept two dashes before the long option name. 180 This is an overloading of the use of this enum, since originally it 181 was only intended to tell the --help display function how to display 182 the long option name. This feature was added in order to resolve 183 the confusion about the -omagic command line switch. Is it setting 184 the output file name to "magic" or is it setting the NMAGIC flag on 185 the output ? It has been decided that it is setting the output file 186 name, and that if you want to set the NMAGIC flag you should use -N 187 or --omagic. */ 188 EXACTLY_TWO_DASHES, 189 /* Don't mention this option in --help output. */ 190 NO_HELP 191 } control; 192 }; 193 194 static const struct ld_option ld_options[] = 195 { 196 { {NULL, required_argument, NULL, '\0'}, 197 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 198 ONE_DASH }, 199 { {"architecture", required_argument, NULL, 'A'}, 200 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 201 { {"format", required_argument, NULL, 'b'}, 202 'b', N_("TARGET"), N_("Specify target for following input files"), 203 TWO_DASHES }, 204 { {"mri-script", required_argument, NULL, 'c'}, 205 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 206 { {"dc", no_argument, NULL, 'd'}, 207 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 208 { {"dp", no_argument, NULL, 'd'}, 209 '\0', NULL, NULL, ONE_DASH }, 210 { {"entry", required_argument, NULL, 'e'}, 211 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 212 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 213 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 214 { {"EB", no_argument, NULL, OPTION_EB}, 215 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 216 { {"EL", no_argument, NULL, OPTION_EL}, 217 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 218 { {"auxiliary", required_argument, NULL, 'f'}, 219 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 220 TWO_DASHES }, 221 { {"filter", required_argument, NULL, 'F'}, 222 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 223 TWO_DASHES }, 224 { {NULL, no_argument, NULL, '\0'}, 225 'g', NULL, N_("Ignored"), ONE_DASH }, 226 { {"gpsize", required_argument, NULL, 'G'}, 227 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 228 TWO_DASHES }, 229 { {"soname", required_argument, NULL, OPTION_SONAME}, 230 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 231 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 232 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 233 TWO_DASHES }, 234 { {"library", required_argument, NULL, 'l'}, 235 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 236 { {"library-path", required_argument, NULL, 'L'}, 237 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 238 TWO_DASHES }, 239 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 240 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 241 { {NULL, required_argument, NULL, '\0'}, 242 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 243 { {"print-map", no_argument, NULL, 'M'}, 244 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 245 { {"nmagic", no_argument, NULL, 'n'}, 246 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 247 { {"omagic", no_argument, NULL, 'N'}, 248 'N', NULL, N_("Do not page align data, do not make text readonly"), 249 EXACTLY_TWO_DASHES }, 250 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 251 '\0', NULL, N_("Page align data, make text readonly"), 252 EXACTLY_TWO_DASHES }, 253 { {"output", required_argument, NULL, 'o'}, 254 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 255 { {NULL, required_argument, NULL, '\0'}, 256 'O', NULL, N_("Optimize output file"), ONE_DASH }, 257 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 258 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 259 { {"emit-relocs", no_argument, NULL, 'q'}, 260 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 261 { {"relocatable", no_argument, NULL, 'r'}, 262 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 263 { {NULL, no_argument, NULL, '\0'}, 264 'i', NULL, NULL, ONE_DASH }, 265 { {"just-symbols", required_argument, NULL, 'R'}, 266 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 267 TWO_DASHES }, 268 { {"strip-all", no_argument, NULL, 's'}, 269 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 270 { {"strip-debug", no_argument, NULL, 'S'}, 271 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 272 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 273 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 274 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 275 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 276 { {"trace", no_argument, NULL, 't'}, 277 't', NULL, N_("Trace file opens"), TWO_DASHES }, 278 { {"script", required_argument, NULL, 'T'}, 279 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 280 { {"undefined", required_argument, NULL, 'u'}, 281 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 282 TWO_DASHES }, 283 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 284 '\0', N_("[=SECTION]"), 285 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 286 { {"Ur", no_argument, NULL, OPTION_UR}, 287 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 288 { {"version", no_argument, NULL, OPTION_VERSION}, 289 'v', NULL, N_("Print version information"), TWO_DASHES }, 290 { {NULL, no_argument, NULL, '\0'}, 291 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 292 { {"discard-all", no_argument, NULL, 'x'}, 293 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 294 { {"discard-locals", no_argument, NULL, 'X'}, 295 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 296 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 297 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 298 { {"trace-symbol", required_argument, NULL, 'y'}, 299 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 300 { {NULL, required_argument, NULL, '\0'}, 301 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 302 ONE_DASH }, 303 { {"Zmagic", no_argument, NULL, 'Z'}, 304 'Z', NULL, N_("Do not page align got/plt, old style executable"), 305 EXACTLY_TWO_DASHES }, 306 { {"start-group", no_argument, NULL, '('}, 307 '(', NULL, N_("Start a group"), TWO_DASHES }, 308 { {"end-group", no_argument, NULL, ')'}, 309 ')', NULL, N_("End a group"), TWO_DASHES }, 310 { {"accept-unknown-input-arch", no_argument, NULL, 311 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 312 '\0', NULL, 313 N_("Accept input files whose architecture cannot be determined"), 314 TWO_DASHES }, 315 { {"no-accept-unknown-input-arch", no_argument, NULL, 316 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 317 '\0', NULL, N_("Reject input files whose architecture is unknown"), 318 TWO_DASHES }, 319 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED}, 320 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n" 321 "\t\t\t\tfollowing dynamic libs"), TWO_DASHES }, 322 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED}, 323 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n" 324 "\t\t\t\tin following dynamic libs"), TWO_DASHES }, 325 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 326 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 327 TWO_DASHES }, 328 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 329 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), 330 TWO_DASHES }, 331 { {"assert", required_argument, NULL, OPTION_ASSERT}, 332 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 333 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 334 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 335 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 336 '\0', NULL, NULL, ONE_DASH }, 337 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 338 '\0', NULL, NULL, ONE_DASH }, 339 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 340 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 341 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 342 '\0', NULL, NULL, ONE_DASH }, 343 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 344 '\0', NULL, NULL, ONE_DASH }, 345 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 346 '\0', NULL, NULL, ONE_DASH }, 347 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 348 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 349 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 350 '\0', NULL, N_("Check section addresses for overlaps (default)"), 351 TWO_DASHES }, 352 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 353 '\0', NULL, N_("Do not check section addresses for overlaps"), 354 TWO_DASHES }, 355 { {"cref", no_argument, NULL, OPTION_CREF}, 356 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 357 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 358 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 359 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 360 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 361 TWO_DASHES }, 362 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 363 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 364 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 365 '\0', NULL, N_("Treat warnings as errors"), 366 TWO_DASHES }, 367 { {"fini", required_argument, NULL, OPTION_FINI}, 368 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 369 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 370 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 371 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 372 '\0', NULL, N_("Remove unused sections (on some targets)"), 373 TWO_DASHES }, 374 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 375 '\0', NULL, N_("Don't remove unused sections (default)"), 376 TWO_DASHES }, 377 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 378 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 379 TWO_DASHES }, 380 { {"help", no_argument, NULL, OPTION_HELP}, 381 '\0', NULL, N_("Print option help"), TWO_DASHES }, 382 { {"init", required_argument, NULL, OPTION_INIT}, 383 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 384 { {"Map", required_argument, NULL, OPTION_MAP}, 385 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 386 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 387 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 388 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 389 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 390 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 391 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 392 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 393 '\0', NULL, N_("Do not allow unresolved references in object files"), 394 TWO_DASHES }, 395 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 396 '\0', NULL, N_("Allow unresolved references in shared libaries"), 397 TWO_DASHES }, 398 { {"no-allow-shlib-undefined", no_argument, NULL, 399 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 400 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 401 TWO_DASHES }, 402 { {"allow-multiple-definition", no_argument, NULL, 403 OPTION_ALLOW_MULTIPLE_DEFINITION}, 404 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 405 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 406 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 407 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 408 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 409 { {"default-imported-symver", no_argument, NULL, 410 OPTION_DEFAULT_IMPORTED_SYMVER}, 411 '\0', NULL, N_("Create default symbol version for imported symbols"), 412 TWO_DASHES }, 413 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 414 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 415 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 416 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 417 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 418 '\0', NULL, N_("Create an output file even if errors occur"), 419 TWO_DASHES }, 420 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 421 '\0', NULL, NULL, NO_HELP }, 422 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 423 '\0', NULL, N_("Only use library directories specified on\n" 424 "\t\t\t\tthe command line"), ONE_DASH }, 425 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 426 '\0', N_("TARGET"), N_("Specify target of output file"), 427 EXACTLY_TWO_DASHES }, 428 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 429 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 430 { {"reduce-memory-overheads", no_argument, NULL, 431 OPTION_REDUCE_MEMORY_OVERHEADS}, 432 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 433 TWO_DASHES }, 434 { {"relax", no_argument, NULL, OPTION_RELAX}, 435 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 436 { {"retain-symbols-file", required_argument, NULL, 437 OPTION_RETAIN_SYMBOLS_FILE}, 438 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 439 { {"rpath", required_argument, NULL, OPTION_RPATH}, 440 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 441 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 442 '\0', N_("PATH"), N_("Set link time shared library search path"), 443 ONE_DASH }, 444 { {"shared", no_argument, NULL, OPTION_SHARED}, 445 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 446 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 447 '\0', NULL, NULL, ONE_DASH }, 448 { {"pie", no_argument, NULL, OPTION_PIE}, 449 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 450 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 451 '\0', NULL, NULL, TWO_DASHES }, 452 { {"nopie", no_argument, NULL, OPTION_NOPIE}, 453 '\0', NULL, N_("Do not create a position independent executable"), ONE_DASH }, 454 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, 455 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, 456 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 457 '\0', NULL, NULL, NO_HELP }, 458 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 459 '\0', N_("name|alignment"), 460 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 461 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 462 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 463 TWO_DASHES }, 464 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 465 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 466 TWO_DASHES }, 467 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 468 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 469 TWO_DASHES }, 470 { {"stats", no_argument, NULL, OPTION_STATS}, 471 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 472 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 473 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 474 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 475 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 476 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 477 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 478 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 479 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 480 TWO_DASHES }, 481 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 482 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 483 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 484 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 485 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 486 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 487 { {"unresolved-symbols=<method>", required_argument, NULL, 488 OPTION_UNRESOLVED_SYMBOLS}, 489 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 490 "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n" 491 "\t\t\t\tignore-in-shared-libs"), TWO_DASHES }, 492 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 493 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 494 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 495 '\0', NULL, NULL, NO_HELP }, 496 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 497 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 498 { {"version-exports-section", required_argument, NULL, 499 OPTION_VERSION_EXPORTS_SECTION }, 500 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 501 "\t\t\t\tSYMBOL as the version."), TWO_DASHES }, 502 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 503 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 504 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 505 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 506 TWO_DASHES }, 507 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 508 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 509 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 510 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 511 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 512 '\0', NULL, N_("Warn if start of section changes due to alignment"), 513 TWO_DASHES }, 514 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 515 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 516 TWO_DASHES }, 517 { {"warn-unresolved-symbols", no_argument, NULL, 518 OPTION_WARN_UNRESOLVED_SYMBOLS}, 519 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 520 { {"error-unresolved-symbols", no_argument, NULL, 521 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 522 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 523 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 524 '\0', NULL, N_("Include all objects from following archives"), 525 TWO_DASHES }, 526 { {"wrap", required_argument, NULL, OPTION_WRAP}, 527 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 528 }; 529 530 #define OPTION_COUNT ARRAY_SIZE (ld_options) 531 532 void 533 parse_args (unsigned argc, char **argv) 534 { 535 unsigned i; 536 int is, il, irl; 537 int ingroup = 0; 538 char *default_dirlist = NULL; 539 char *shortopts; 540 struct option *longopts; 541 struct option *really_longopts; 542 int last_optind; 543 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 544 545 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 546 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 547 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 548 549 /* Starting the short option string with '-' is for programs that 550 expect options and other ARGV-elements in any order and that care about 551 the ordering of the two. We describe each non-option ARGV-element 552 as if it were the argument of an option with character code 1. */ 553 shortopts[0] = '-'; 554 is = 1; 555 il = 0; 556 irl = 0; 557 for (i = 0; i < OPTION_COUNT; i++) 558 { 559 if (ld_options[i].shortopt != '\0') 560 { 561 shortopts[is] = ld_options[i].shortopt; 562 ++is; 563 if (ld_options[i].opt.has_arg == required_argument 564 || ld_options[i].opt.has_arg == optional_argument) 565 { 566 shortopts[is] = ':'; 567 ++is; 568 if (ld_options[i].opt.has_arg == optional_argument) 569 { 570 shortopts[is] = ':'; 571 ++is; 572 } 573 } 574 } 575 if (ld_options[i].opt.name != NULL) 576 { 577 if (ld_options[i].control == EXACTLY_TWO_DASHES) 578 { 579 really_longopts[irl] = ld_options[i].opt; 580 ++irl; 581 } 582 else 583 { 584 longopts[il] = ld_options[i].opt; 585 ++il; 586 } 587 } 588 } 589 shortopts[is] = '\0'; 590 longopts[il].name = NULL; 591 really_longopts[irl].name = NULL; 592 593 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 594 595 /* The -G option is ambiguous on different platforms. Sometimes it 596 specifies the largest data size to put into the small data 597 section. Sometimes it is equivalent to --shared. Unfortunately, 598 the first form takes an argument, while the second does not. 599 600 We need to permit the --shared form because on some platforms, 601 such as Solaris, gcc -shared will pass -G to the linker. 602 603 To permit either usage, we look through the argument list. If we 604 find -G not followed by a number, we change it into --shared. 605 This will work for most normal cases. */ 606 for (i = 1; i < argc; i++) 607 if (strcmp (argv[i], "-G") == 0 608 && (i + 1 >= argc 609 || ! ISDIGIT (argv[i + 1][0]))) 610 argv[i] = (char *) "--shared"; 611 612 /* Because we permit long options to start with a single dash, and 613 we have a --library option, and the -l option is conventionally 614 used with an immediately following argument, we can have bad 615 results if somebody tries to use -l with a library whose name 616 happens to start with "ibrary", as in -li. We avoid problems by 617 simply turning -l into --library. This means that users will 618 have to use two dashes in order to use --library, which is OK 619 since that's how it is documented. 620 621 FIXME: It's possible that this problem can arise for other short 622 options as well, although the user does always have the recourse 623 of adding a space between the option and the argument. */ 624 for (i = 1; i < argc; i++) 625 { 626 if (argv[i][0] == '-' 627 && argv[i][1] == 'l' 628 && argv[i][2] != '\0') 629 { 630 char *n; 631 632 n = xmalloc (strlen (argv[i]) + 20); 633 sprintf (n, "--library=%s", argv[i] + 2); 634 argv[i] = n; 635 } 636 } 637 638 last_optind = -1; 639 while (1) 640 { 641 int longind; 642 int optc; 643 644 /* Using last_optind lets us avoid calling ldemul_parse_args 645 multiple times on a single option, which would lead to 646 confusion in the internal static variables maintained by 647 getopt. This could otherwise happen for an argument like 648 -nx, in which the -n is parsed as a single option, and we 649 loop around to pick up the -x. */ 650 if (optind != last_optind) 651 if (ldemul_parse_args (argc, argv)) 652 continue; 653 654 /* getopt_long_only is like getopt_long, but '-' as well as '--' 655 can indicate a long option. */ 656 opterr = 0; 657 last_optind = optind; 658 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 659 if (optc == '?') 660 { 661 optind = last_optind; 662 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 663 } 664 665 if (ldemul_handle_option (optc)) 666 continue; 667 668 if (optc == -1) 669 break; 670 671 switch (optc) 672 { 673 case '?': 674 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 675 default: 676 einfo (_("%P%F: use the --help option for usage information\n")); 677 678 case 1: /* File name. */ 679 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 680 break; 681 682 case OPTION_IGNORE: 683 break; 684 case 'a': 685 /* For HP/UX compatibility. Actually -a shared should mean 686 ``use only shared libraries'' but, then, we don't 687 currently support shared libraries on HP/UX anyhow. */ 688 if (strcmp (optarg, "archive") == 0) 689 config.dynamic_link = FALSE; 690 else if (strcmp (optarg, "shared") == 0 691 || strcmp (optarg, "default") == 0) 692 config.dynamic_link = TRUE; 693 else 694 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 695 break; 696 case OPTION_ASSERT: 697 /* FIXME: We just ignore these, but we should handle them. */ 698 if (strcmp (optarg, "definitions") == 0) 699 ; 700 else if (strcmp (optarg, "nodefinitions") == 0) 701 ; 702 else if (strcmp (optarg, "nosymbolic") == 0) 703 ; 704 else if (strcmp (optarg, "pure-text") == 0) 705 ; 706 else 707 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 708 break; 709 case 'A': 710 ldfile_add_arch (optarg); 711 break; 712 case 'b': 713 lang_add_target (optarg); 714 break; 715 case 'c': 716 ldfile_open_command_file (optarg); 717 parser_input = input_mri_script; 718 yyparse (); 719 break; 720 case OPTION_CALL_SHARED: 721 config.dynamic_link = TRUE; 722 break; 723 case OPTION_NON_SHARED: 724 config.dynamic_link = FALSE; 725 if (! link_info.shared) 726 link_info.pie = FALSE; 727 break; 728 case OPTION_CREF: 729 command_line.cref = TRUE; 730 link_info.notice_all = TRUE; 731 break; 732 case 'd': 733 command_line.force_common_definition = TRUE; 734 break; 735 case OPTION_DEFSYM: 736 lex_string = optarg; 737 lex_redirect (optarg); 738 parser_input = input_defsym; 739 parsing_defsym = 1; 740 yyparse (); 741 parsing_defsym = 0; 742 lex_string = NULL; 743 break; 744 case OPTION_DEMANGLE: 745 demangling = TRUE; 746 if (optarg != NULL) 747 { 748 enum demangling_styles style; 749 750 style = cplus_demangle_name_to_style (optarg); 751 if (style == unknown_demangling) 752 einfo (_("%F%P: unknown demangling style `%s'"), 753 optarg); 754 755 cplus_demangle_set_style (style); 756 } 757 break; 758 case 'I': /* Used on Solaris. */ 759 case OPTION_DYNAMIC_LINKER: 760 command_line.interpreter = optarg; 761 break; 762 case OPTION_SYSROOT: 763 /* Already handled in ldmain.c. */ 764 break; 765 case OPTION_EB: 766 command_line.endian = ENDIAN_BIG; 767 break; 768 case OPTION_EL: 769 command_line.endian = ENDIAN_LITTLE; 770 break; 771 case OPTION_EMBEDDED_RELOCS: 772 command_line.embedded_relocs = TRUE; 773 break; 774 case OPTION_EXPORT_DYNAMIC: 775 case 'E': /* HP/UX compatibility. */ 776 link_info.export_dynamic = TRUE; 777 break; 778 case 'e': 779 lang_add_entry (optarg, TRUE); 780 break; 781 case 'f': 782 if (command_line.auxiliary_filters == NULL) 783 { 784 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 785 command_line.auxiliary_filters[0] = optarg; 786 command_line.auxiliary_filters[1] = NULL; 787 } 788 else 789 { 790 int c; 791 char **p; 792 793 c = 0; 794 for (p = command_line.auxiliary_filters; *p != NULL; p++) 795 ++c; 796 command_line.auxiliary_filters 797 = xrealloc (command_line.auxiliary_filters, 798 (c + 2) * sizeof (char *)); 799 command_line.auxiliary_filters[c] = optarg; 800 command_line.auxiliary_filters[c + 1] = NULL; 801 } 802 break; 803 case 'F': 804 command_line.filter_shlib = optarg; 805 break; 806 case OPTION_FORCE_EXE_SUFFIX: 807 command_line.force_exe_suffix = TRUE; 808 break; 809 case 'G': 810 { 811 char *end; 812 g_switch_value = strtoul (optarg, &end, 0); 813 if (*end) 814 einfo (_("%P%F: invalid number `%s'\n"), optarg); 815 } 816 break; 817 case 'g': 818 /* Ignore. */ 819 break; 820 case OPTION_GC_SECTIONS: 821 link_info.gc_sections = TRUE; 822 break; 823 case OPTION_HELP: 824 help (); 825 xexit (0); 826 break; 827 case 'L': 828 ldfile_add_library_path (optarg, TRUE); 829 break; 830 case 'l': 831 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 832 break; 833 case 'M': 834 config.map_filename = "-"; 835 break; 836 case 'm': 837 /* Ignore. Was handled in a pre-parse. */ 838 break; 839 case OPTION_MAP: 840 config.map_filename = optarg; 841 break; 842 case 'N': 843 config.text_read_only = FALSE; 844 config.magic_demand_paged = FALSE; 845 config.dynamic_link = FALSE; 846 break; 847 case OPTION_NO_OMAGIC: 848 config.text_read_only = TRUE; 849 config.magic_demand_paged = TRUE; 850 /* NB/ Does not set dynamic_link to TRUE. 851 Use --call-shared or -Bdynamic for this. */ 852 break; 853 case 'n': 854 config.magic_demand_paged = FALSE; 855 config.dynamic_link = FALSE; 856 break; 857 case OPTION_NO_DEFINE_COMMON: 858 command_line.inhibit_common_definition = TRUE; 859 break; 860 case OPTION_NO_DEMANGLE: 861 demangling = FALSE; 862 break; 863 case OPTION_NO_GC_SECTIONS: 864 link_info.gc_sections = FALSE; 865 break; 866 case OPTION_NO_KEEP_MEMORY: 867 link_info.keep_memory = FALSE; 868 break; 869 case OPTION_NO_UNDEFINED: 870 link_info.unresolved_syms_in_objects 871 = how_to_report_unresolved_symbols; 872 break; 873 case OPTION_ALLOW_SHLIB_UNDEFINED: 874 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 875 break; 876 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 877 link_info.unresolved_syms_in_shared_libs 878 = how_to_report_unresolved_symbols; 879 break; 880 case OPTION_UNRESOLVED_SYMBOLS: 881 if (strcmp (optarg, "ignore-all") == 0) 882 { 883 link_info.unresolved_syms_in_objects = RM_IGNORE; 884 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 885 } 886 else if (strcmp (optarg, "report-all") == 0) 887 { 888 link_info.unresolved_syms_in_objects 889 = how_to_report_unresolved_symbols; 890 link_info.unresolved_syms_in_shared_libs 891 = how_to_report_unresolved_symbols; 892 } 893 else if (strcmp (optarg, "ignore-in-object-files") == 0) 894 { 895 link_info.unresolved_syms_in_objects = RM_IGNORE; 896 link_info.unresolved_syms_in_shared_libs 897 = how_to_report_unresolved_symbols; 898 } 899 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 900 { 901 link_info.unresolved_syms_in_objects 902 = how_to_report_unresolved_symbols; 903 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 904 } 905 else 906 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 907 break; 908 case OPTION_WARN_UNRESOLVED_SYMBOLS: 909 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 910 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 911 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 912 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 913 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 914 break; 915 916 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 917 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 918 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 919 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 920 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 921 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 922 break; 923 case OPTION_ALLOW_MULTIPLE_DEFINITION: 924 link_info.allow_multiple_definition = TRUE; 925 break; 926 case OPTION_NO_UNDEFINED_VERSION: 927 link_info.allow_undefined_version = FALSE; 928 break; 929 case OPTION_DEFAULT_SYMVER: 930 link_info.create_default_symver = TRUE; 931 break; 932 case OPTION_DEFAULT_IMPORTED_SYMVER: 933 link_info.default_imported_symver = TRUE; 934 break; 935 case OPTION_NO_WARN_MISMATCH: 936 command_line.warn_mismatch = FALSE; 937 break; 938 case OPTION_NOINHIBIT_EXEC: 939 force_make_executable = TRUE; 940 break; 941 case OPTION_NOSTDLIB: 942 config.only_cmd_line_lib_dirs = TRUE; 943 break; 944 case OPTION_NO_WHOLE_ARCHIVE: 945 whole_archive = FALSE; 946 break; 947 case 'O': 948 /* FIXME "-O<non-digits> <value>" used to set the address of 949 section <non-digits>. Was this for compatibility with 950 something, or can we create a new option to do that 951 (with a syntax similar to -defsym)? 952 getopt can't handle two args to an option without kludges. */ 953 954 /* Enable optimizations of output files. */ 955 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 956 break; 957 case 'o': 958 lang_add_output (optarg, 0); 959 break; 960 case OPTION_OFORMAT: 961 lang_add_output_format (optarg, NULL, NULL, 0); 962 break; 963 case 'q': 964 link_info.emitrelocations = TRUE; 965 break; 966 case 'i': 967 case 'r': 968 if (optind == last_optind) 969 /* This can happen if the user put "-rpath,a" on the command 970 line. (Or something similar. The comma is important). 971 Getopt becomes confused and thinks that this is a -r option 972 but it cannot parse the text after the -r so it refuses to 973 increment the optind counter. Detect this case and issue 974 an error message here. We cannot just make this a warning, 975 increment optind, and continue because getopt is too confused 976 and will seg-fault the next time around. */ 977 einfo(_("%P%F: bad -rpath option\n")); 978 979 link_info.relocatable = TRUE; 980 config.build_constructors = FALSE; 981 config.magic_demand_paged = FALSE; 982 config.text_read_only = FALSE; 983 config.dynamic_link = FALSE; 984 break; 985 case 'R': 986 /* The GNU linker traditionally uses -R to mean to include 987 only the symbols from a file. The Solaris linker uses -R 988 to set the path used by the runtime linker to find 989 libraries. This is the GNU linker -rpath argument. We 990 try to support both simultaneously by checking the file 991 named. If it is a directory, rather than a regular file, 992 we assume -rpath was meant. */ 993 { 994 struct stat s; 995 996 if (stat (optarg, &s) >= 0 997 && ! S_ISDIR (s.st_mode)) 998 { 999 lang_add_input_file (optarg, 1000 lang_input_file_is_symbols_only_enum, 1001 NULL); 1002 break; 1003 } 1004 } 1005 /* Fall through. */ 1006 case OPTION_RPATH: 1007 if (command_line.rpath == NULL) 1008 command_line.rpath = xstrdup (optarg); 1009 else 1010 { 1011 size_t rpath_len = strlen (command_line.rpath); 1012 size_t optarg_len = strlen (optarg); 1013 char *buf; 1014 char *cp = command_line.rpath; 1015 1016 /* First see whether OPTARG is already in the path. */ 1017 do 1018 { 1019 size_t idx = 0; 1020 1021 while (optarg[idx] != '\0' && optarg[idx] == cp[idx]) 1022 ++idx; 1023 if (optarg[idx] == '\0' 1024 && (cp[idx] == '\0' || cp[idx] == ':')) 1025 /* We found it. */ 1026 break; 1027 1028 /* Not yet found. */ 1029 cp = strchr (cp, ':'); 1030 if (cp != NULL) 1031 ++cp; 1032 } 1033 while (cp != NULL); 1034 1035 if (cp == NULL) 1036 { 1037 buf = xmalloc (rpath_len + optarg_len + 2); 1038 sprintf (buf, "%s:%s", command_line.rpath, optarg); 1039 free (command_line.rpath); 1040 command_line.rpath = buf; 1041 } 1042 } 1043 break; 1044 case OPTION_RPATH_LINK: 1045 if (command_line.rpath_link == NULL) 1046 command_line.rpath_link = xstrdup (optarg); 1047 else 1048 { 1049 char *buf; 1050 1051 buf = xmalloc (strlen (command_line.rpath_link) 1052 + strlen (optarg) 1053 + 2); 1054 sprintf (buf, "%s:%s", command_line.rpath_link, optarg); 1055 free (command_line.rpath_link); 1056 command_line.rpath_link = buf; 1057 } 1058 break; 1059 case OPTION_RELAX: 1060 command_line.relax = TRUE; 1061 break; 1062 case OPTION_RETAIN_SYMBOLS_FILE: 1063 add_keepsyms_file (optarg); 1064 break; 1065 case 'S': 1066 link_info.strip = strip_debugger; 1067 break; 1068 case 's': 1069 link_info.strip = strip_all; 1070 break; 1071 case OPTION_STRIP_DISCARDED: 1072 link_info.strip_discarded = TRUE; 1073 break; 1074 case OPTION_NO_STRIP_DISCARDED: 1075 link_info.strip_discarded = FALSE; 1076 break; 1077 case OPTION_SHARED: 1078 if (config.has_shared) 1079 { 1080 link_info.shared = TRUE; 1081 link_info.pie = FALSE; 1082 /* When creating a shared library, the default 1083 behaviour is to ignore any unresolved references. */ 1084 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1085 link_info.unresolved_syms_in_objects = RM_IGNORE; 1086 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1087 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1088 } 1089 else 1090 einfo (_("%P%F: -shared not supported\n")); 1091 break; 1092 case OPTION_PIE: 1093 if (config.has_shared) 1094 { 1095 link_info.shared = TRUE; 1096 link_info.pie = TRUE; 1097 } 1098 else 1099 einfo (_("%P%F: -pie not supported\n")); 1100 break; 1101 case OPTION_NOPIE: 1102 if (config.has_shared) 1103 { 1104 link_info.shared = FALSE; 1105 link_info.pie = FALSE; 1106 } 1107 else 1108 einfo (_("%P%F: -nopie not supported\n")); 1109 break; 1110 case 'h': /* Used on Solaris. */ 1111 case OPTION_SONAME: 1112 command_line.soname = optarg; 1113 break; 1114 case OPTION_SORT_COMMON: 1115 config.sort_common = TRUE; 1116 break; 1117 case OPTION_SORT_SECTION: 1118 if (strcmp (optarg, N_("name")) == 0) 1119 sort_section = by_name; 1120 else if (strcmp (optarg, N_("alignment")) == 0) 1121 sort_section = by_alignment; 1122 else 1123 einfo (_("%P%F: invalid section sorting option: %s\n"), 1124 optarg); 1125 break; 1126 case OPTION_STATS: 1127 config.stats = TRUE; 1128 break; 1129 case OPTION_SYMBOLIC: 1130 link_info.symbolic = TRUE; 1131 break; 1132 case 't': 1133 trace_files = TRUE; 1134 break; 1135 case 'T': 1136 ldfile_open_command_file (optarg); 1137 parser_input = input_script; 1138 yyparse (); 1139 break; 1140 case OPTION_SECTION_START: 1141 { 1142 char *optarg2; 1143 char *sec_name; 1144 int len; 1145 1146 /* Check for <something>=<somthing>... */ 1147 optarg2 = strchr (optarg, '='); 1148 if (optarg2 == NULL) 1149 einfo (_("%P%F: invalid argument to option" 1150 " \"--section-start\"\n")); 1151 1152 optarg2++; 1153 1154 /* So far so good. Are all the args present? */ 1155 if ((*optarg == '\0') || (*optarg2 == '\0')) 1156 einfo (_("%P%F: missing argument(s) to option" 1157 " \"--section-start\"\n")); 1158 1159 /* We must copy the section name as set_section_start 1160 doesn't do it for us. */ 1161 len = optarg2 - optarg; 1162 sec_name = xmalloc (len); 1163 memcpy (sec_name, optarg, len - 1); 1164 sec_name[len - 1] = 0; 1165 1166 /* Then set it... */ 1167 set_section_start (sec_name, optarg2); 1168 } 1169 break; 1170 case OPTION_TARGET_HELP: 1171 /* Mention any target specific options. */ 1172 ldemul_list_emulation_options (stdout); 1173 exit (0); 1174 case OPTION_TBSS: 1175 set_segment_start (".bss", optarg); 1176 break; 1177 case OPTION_TDATA: 1178 set_segment_start (".data", optarg); 1179 break; 1180 case OPTION_TTEXT: 1181 set_segment_start (".text", optarg); 1182 break; 1183 case OPTION_TRADITIONAL_FORMAT: 1184 link_info.traditional_format = TRUE; 1185 break; 1186 case OPTION_TASK_LINK: 1187 link_info.task_link = TRUE; 1188 /* Fall through - do an implied -r option. */ 1189 case OPTION_UR: 1190 link_info.relocatable = TRUE; 1191 config.build_constructors = TRUE; 1192 config.magic_demand_paged = FALSE; 1193 config.text_read_only = FALSE; 1194 config.dynamic_link = FALSE; 1195 break; 1196 case 'u': 1197 ldlang_add_undef (optarg); 1198 break; 1199 case OPTION_UNIQUE: 1200 if (optarg != NULL) 1201 lang_add_unique (optarg); 1202 else 1203 config.unique_orphan_sections = TRUE; 1204 break; 1205 case OPTION_VERBOSE: 1206 ldversion (1); 1207 version_printed = TRUE; 1208 trace_file_tries = TRUE; 1209 overflow_cutoff_limit = -2; 1210 break; 1211 case 'v': 1212 ldversion (0); 1213 version_printed = TRUE; 1214 break; 1215 case 'V': 1216 ldversion (1); 1217 version_printed = TRUE; 1218 break; 1219 case OPTION_VERSION: 1220 ldversion (2); 1221 xexit (0); 1222 break; 1223 case OPTION_VERSION_SCRIPT: 1224 /* This option indicates a small script that only specifies 1225 version information. Read it, but don't assume that 1226 we've seen a linker script. */ 1227 { 1228 FILE *hold_script_handle; 1229 1230 hold_script_handle = saved_script_handle; 1231 ldfile_open_command_file (optarg); 1232 saved_script_handle = hold_script_handle; 1233 parser_input = input_version_script; 1234 yyparse (); 1235 } 1236 break; 1237 case OPTION_VERSION_EXPORTS_SECTION: 1238 /* This option records a version symbol to be applied to the 1239 symbols listed for export to be found in the object files 1240 .exports sections. */ 1241 command_line.version_exports_section = optarg; 1242 break; 1243 case OPTION_WARN_COMMON: 1244 config.warn_common = TRUE; 1245 break; 1246 case OPTION_WARN_CONSTRUCTORS: 1247 config.warn_constructors = TRUE; 1248 break; 1249 case OPTION_WARN_FATAL: 1250 config.fatal_warnings = TRUE; 1251 break; 1252 case OPTION_WARN_MULTIPLE_GP: 1253 config.warn_multiple_gp = TRUE; 1254 break; 1255 case OPTION_WARN_ONCE: 1256 config.warn_once = TRUE; 1257 break; 1258 case OPTION_WARN_SECTION_ALIGN: 1259 config.warn_section_align = TRUE; 1260 break; 1261 case OPTION_WARN_SHARED_TEXTREL: 1262 link_info.warn_shared_textrel = TRUE; 1263 break; 1264 case OPTION_WHOLE_ARCHIVE: 1265 whole_archive = TRUE; 1266 break; 1267 case OPTION_ADD_NEEDED: 1268 add_needed = TRUE; 1269 break; 1270 case OPTION_NO_ADD_NEEDED: 1271 add_needed = FALSE; 1272 break; 1273 case OPTION_AS_NEEDED: 1274 as_needed = TRUE; 1275 break; 1276 case OPTION_NO_AS_NEEDED: 1277 as_needed = FALSE; 1278 break; 1279 case OPTION_WRAP: 1280 add_wrap (optarg); 1281 break; 1282 case OPTION_DISCARD_NONE: 1283 link_info.discard = discard_none; 1284 break; 1285 case 'X': 1286 link_info.discard = discard_l; 1287 break; 1288 case 'x': 1289 link_info.discard = discard_all; 1290 break; 1291 case 'Y': 1292 if (strncmp (optarg, "P,", 2) == 0) 1293 optarg += 2; 1294 if (default_dirlist != NULL) 1295 free (default_dirlist); 1296 default_dirlist = xstrdup (optarg); 1297 break; 1298 case 'y': 1299 add_ysym (optarg); 1300 break; 1301 case 'Z': 1302 config.data_bss_contig = TRUE; 1303 break; 1304 case OPTION_SPARE_DYNAMIC_TAGS: 1305 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1306 break; 1307 case OPTION_SPLIT_BY_RELOC: 1308 if (optarg != NULL) 1309 config.split_by_reloc = strtoul (optarg, NULL, 0); 1310 else 1311 config.split_by_reloc = 32768; 1312 break; 1313 case OPTION_SPLIT_BY_FILE: 1314 if (optarg != NULL) 1315 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1316 else 1317 config.split_by_file = 1; 1318 break; 1319 case OPTION_CHECK_SECTIONS: 1320 command_line.check_section_addresses = TRUE; 1321 break; 1322 case OPTION_NO_CHECK_SECTIONS: 1323 command_line.check_section_addresses = FALSE; 1324 break; 1325 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1326 command_line.accept_unknown_input_arch = TRUE; 1327 break; 1328 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1329 command_line.accept_unknown_input_arch = FALSE; 1330 break; 1331 case '(': 1332 if (ingroup) 1333 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1334 1335 lang_enter_group (); 1336 ingroup = 1; 1337 break; 1338 case ')': 1339 if (! ingroup) 1340 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1341 1342 lang_leave_group (); 1343 ingroup = 0; 1344 break; 1345 1346 case OPTION_INIT: 1347 link_info.init_function = optarg; 1348 break; 1349 1350 case OPTION_FINI: 1351 link_info.fini_function = optarg; 1352 break; 1353 1354 case OPTION_REDUCE_MEMORY_OVERHEADS: 1355 command_line.reduce_memory_overheads = TRUE; 1356 if (config.hash_table_size == 0) 1357 config.hash_table_size = 1021; 1358 break; 1359 1360 case OPTION_HASH_SIZE: 1361 { 1362 bfd_size_type new_size; 1363 1364 new_size = strtoul (optarg, NULL, 0); 1365 if (new_size) 1366 config.hash_table_size = new_size; 1367 else 1368 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1369 } 1370 break; 1371 } 1372 } 1373 1374 if (ingroup) 1375 lang_leave_group (); 1376 1377 if (default_dirlist != NULL) 1378 { 1379 set_default_dirlist (default_dirlist); 1380 free (default_dirlist); 1381 } 1382 1383 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1384 /* FIXME: Should we allow emulations a chance to set this ? */ 1385 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1386 1387 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1388 /* FIXME: Should we allow emulations a chance to set this ? */ 1389 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1390 } 1391 1392 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1393 library search path. */ 1394 1395 static void 1396 set_default_dirlist (char *dirlist_ptr) 1397 { 1398 char *p; 1399 1400 while (1) 1401 { 1402 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1403 if (p != NULL) 1404 *p = '\0'; 1405 if (*dirlist_ptr != '\0') 1406 ldfile_add_library_path (dirlist_ptr, TRUE); 1407 if (p == NULL) 1408 break; 1409 dirlist_ptr = p + 1; 1410 } 1411 } 1412 1413 static void 1414 set_section_start (char *sect, char *valstr) 1415 { 1416 const char *end; 1417 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1418 if (*end) 1419 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1420 lang_section_start (sect, exp_intop (val), NULL); 1421 } 1422 1423 static void 1424 set_segment_start (const char *section, char *valstr) 1425 { 1426 const char *name; 1427 const char *end; 1428 segment_type *seg; 1429 1430 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1431 if (*end) 1432 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1433 /* If we already have an entry for this segment, update the existing 1434 value. */ 1435 name = section + 1; 1436 for (seg = segments; seg; seg = seg->next) 1437 if (strcmp (seg->name, name) == 0) 1438 { 1439 seg->value = val; 1440 return; 1441 } 1442 /* There was no existing value so we must create a new segment 1443 entry. */ 1444 seg = stat_alloc (sizeof (*seg)); 1445 seg->name = name; 1446 seg->value = val; 1447 seg->used = FALSE; 1448 /* Add it to the linked list of segments. */ 1449 seg->next = segments; 1450 segments = seg; 1451 /* Historically, -Ttext and friends set the base address of a 1452 particular section. For backwards compatibility, we still do 1453 that. If a SEGMENT_START directive is seen, the section address 1454 assignment will be disabled. */ 1455 lang_section_start (section, exp_intop (val), seg); 1456 } 1457 1458 1459 /* Print help messages for the options. */ 1460 1461 static void 1462 help (void) 1463 { 1464 unsigned i; 1465 const char **targets, **pp; 1466 int len; 1467 1468 printf (_("Usage: %s [options] file...\n"), program_name); 1469 1470 printf (_("Options:\n")); 1471 for (i = 0; i < OPTION_COUNT; i++) 1472 { 1473 if (ld_options[i].doc != NULL) 1474 { 1475 bfd_boolean comma; 1476 unsigned j; 1477 1478 printf (" "); 1479 1480 comma = FALSE; 1481 len = 2; 1482 1483 j = i; 1484 do 1485 { 1486 if (ld_options[j].shortopt != '\0' 1487 && ld_options[j].control != NO_HELP) 1488 { 1489 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1490 len += (comma ? 2 : 0) + 2; 1491 if (ld_options[j].arg != NULL) 1492 { 1493 if (ld_options[j].opt.has_arg != optional_argument) 1494 { 1495 printf (" "); 1496 ++len; 1497 } 1498 printf ("%s", _(ld_options[j].arg)); 1499 len += strlen (_(ld_options[j].arg)); 1500 } 1501 comma = TRUE; 1502 } 1503 ++j; 1504 } 1505 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1506 1507 j = i; 1508 do 1509 { 1510 if (ld_options[j].opt.name != NULL 1511 && ld_options[j].control != NO_HELP) 1512 { 1513 int two_dashes = 1514 (ld_options[j].control == TWO_DASHES 1515 || ld_options[j].control == EXACTLY_TWO_DASHES); 1516 1517 printf ("%s-%s%s", 1518 comma ? ", " : "", 1519 two_dashes ? "-" : "", 1520 ld_options[j].opt.name); 1521 len += ((comma ? 2 : 0) 1522 + 1 1523 + (two_dashes ? 1 : 0) 1524 + strlen (ld_options[j].opt.name)); 1525 if (ld_options[j].arg != NULL) 1526 { 1527 printf (" %s", _(ld_options[j].arg)); 1528 len += 1 + strlen (_(ld_options[j].arg)); 1529 } 1530 comma = TRUE; 1531 } 1532 ++j; 1533 } 1534 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1535 1536 if (len >= 30) 1537 { 1538 printf ("\n"); 1539 len = 0; 1540 } 1541 1542 for (; len < 30; len++) 1543 putchar (' '); 1544 1545 printf ("%s\n", _(ld_options[i].doc)); 1546 } 1547 } 1548 printf (_(" @FILE")); 1549 for (len = strlen (" @FILE"); len < 30; len++) 1550 putchar (' '); 1551 printf (_("Read options from FILE\n")); 1552 1553 /* Note: Various tools (such as libtool) depend upon the 1554 format of the listings below - do not change them. */ 1555 /* xgettext:c-format */ 1556 printf (_("%s: supported targets:"), program_name); 1557 targets = bfd_target_list (); 1558 for (pp = targets; *pp != NULL; pp++) 1559 printf (" %s", *pp); 1560 free (targets); 1561 printf ("\n"); 1562 1563 /* xgettext:c-format */ 1564 printf (_("%s: supported emulations: "), program_name); 1565 ldemul_list_emulations (stdout); 1566 printf ("\n"); 1567 1568 /* xgettext:c-format */ 1569 printf (_("%s: emulation specific options:\n"), program_name); 1570 ldemul_list_emulation_options (stdout); 1571 printf ("\n"); 1572 1573 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1574 } 1575