1 /* Parse options for the GNU linker. 2 Copyright (C) 1991-2020 Free Software Foundation, Inc. 3 4 This file is part of the GNU Binutils. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "sysdep.h" 22 #include "bfd.h" 23 #include "bfdver.h" 24 #include "libiberty.h" 25 #include <stdio.h> 26 #include <string.h> 27 #include "safe-ctype.h" 28 #include "getopt.h" 29 #include "bfdlink.h" 30 #include "ctf-api.h" 31 #include "ld.h" 32 #include "ldmain.h" 33 #include "ldmisc.h" 34 #include "ldexp.h" 35 #include "ldlang.h" 36 #include <ldgram.h> 37 #include "ldlex.h" 38 #include "ldfile.h" 39 #include "ldver.h" 40 #include "ldemul.h" 41 #include "demangle.h" 42 #ifdef ENABLE_PLUGINS 43 #include "plugin.h" 44 #endif /* ENABLE_PLUGINS */ 45 46 #ifndef PATH_SEPARATOR 47 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 48 #define PATH_SEPARATOR ';' 49 #else 50 #define PATH_SEPARATOR ':' 51 #endif 52 #endif 53 54 /* Somewhere above, sys/stat.h got included . . . . */ 55 #if !defined(S_ISDIR) && defined(S_IFDIR) 56 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 57 #endif 58 59 static void set_default_dirlist (char *); 60 static void set_section_start (char *, char *); 61 static void set_segment_start (const char *, char *); 62 static void help (void); 63 64 /* The long options. This structure is used for both the option 65 parsing and the help text. */ 66 67 enum control_enum { 68 /* Use one dash before long option name. */ 69 ONE_DASH = 1, 70 /* Use two dashes before long option name. */ 71 TWO_DASHES = 2, 72 /* Only accept two dashes before the long option name. 73 This is an overloading of the use of this enum, since originally it 74 was only intended to tell the --help display function how to display 75 the long option name. This feature was added in order to resolve 76 the confusion about the -omagic command line switch. Is it setting 77 the output file name to "magic" or is it setting the NMAGIC flag on 78 the output ? It has been decided that it is setting the output file 79 name, and that if you want to set the NMAGIC flag you should use -N 80 or --omagic. */ 81 EXACTLY_TWO_DASHES, 82 /* Don't mention this option in --help output. */ 83 NO_HELP 84 }; 85 86 struct ld_option 87 { 88 /* The long option information. */ 89 struct option opt; 90 /* The short option with the same meaning ('\0' if none). */ 91 char shortopt; 92 /* The name of the argument (NULL if none). */ 93 const char *arg; 94 /* The documentation string. If this is NULL, this is a synonym for 95 the previous option. */ 96 const char *doc; 97 enum control_enum control; 98 }; 99 100 static const struct ld_option ld_options[] = 101 { 102 { {NULL, required_argument, NULL, '\0'}, 103 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 104 ONE_DASH }, 105 { {"architecture", required_argument, NULL, 'A'}, 106 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 107 { {"format", required_argument, NULL, 'b'}, 108 'b', N_("TARGET"), N_("Specify target for following input files"), 109 TWO_DASHES }, 110 { {"mri-script", required_argument, NULL, 'c'}, 111 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 112 { {"dc", no_argument, NULL, 'd'}, 113 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 114 { {"dp", no_argument, NULL, 'd'}, 115 '\0', NULL, NULL, ONE_DASH }, 116 { {"force-group-allocation", no_argument, NULL, 117 OPTION_FORCE_GROUP_ALLOCATION}, 118 '\0', NULL, N_("Force group members out of groups"), TWO_DASHES }, 119 { {"entry", required_argument, NULL, 'e'}, 120 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 121 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 122 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 123 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC}, 124 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES }, 125 { {"EB", no_argument, NULL, OPTION_EB}, 126 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 127 { {"EL", no_argument, NULL, OPTION_EL}, 128 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 129 { {"auxiliary", required_argument, NULL, 'f'}, 130 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 131 TWO_DASHES }, 132 { {"filter", required_argument, NULL, 'F'}, 133 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 134 TWO_DASHES }, 135 { {NULL, no_argument, NULL, '\0'}, 136 'g', NULL, N_("Ignored"), ONE_DASH }, 137 { {"gpsize", required_argument, NULL, 'G'}, 138 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 139 TWO_DASHES }, 140 { {"soname", required_argument, NULL, OPTION_SONAME}, 141 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 142 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 143 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 144 TWO_DASHES }, 145 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER}, 146 '\0', NULL, N_("Produce an executable with no program interpreter header"), 147 TWO_DASHES }, 148 { {"library", required_argument, NULL, 'l'}, 149 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 150 { {"library-path", required_argument, NULL, 'L'}, 151 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 152 TWO_DASHES }, 153 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 154 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 155 { {NULL, required_argument, NULL, '\0'}, 156 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 157 { {"print-map", no_argument, NULL, 'M'}, 158 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 159 { {"nmagic", no_argument, NULL, 'n'}, 160 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 161 { {"omagic", no_argument, NULL, 'N'}, 162 'N', NULL, N_("Do not page align data, do not make text readonly"), 163 EXACTLY_TWO_DASHES }, 164 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 165 '\0', NULL, N_("Page align data, make text readonly"), 166 EXACTLY_TWO_DASHES }, 167 { {"output", required_argument, NULL, 'o'}, 168 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 169 { {NULL, required_argument, NULL, '\0'}, 170 'O', NULL, N_("Optimize output file"), ONE_DASH }, 171 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB}, 172 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES }, 173 #ifdef ENABLE_PLUGINS 174 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 175 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 176 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 177 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 178 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 179 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 180 ONE_DASH }, 181 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 182 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 183 ONE_DASH }, 184 #endif /* ENABLE_PLUGINS */ 185 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 186 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 187 ONE_DASH }, 188 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 189 '\0', NULL, N_("Ignored for gold option compatibility"), 190 TWO_DASHES }, 191 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 192 '\0', NULL, N_("Ignored for gold option compatibility"), 193 TWO_DASHES }, 194 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 195 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 196 { {"emit-relocs", no_argument, NULL, 'q'}, 197 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 198 { {"relocatable", no_argument, NULL, 'r'}, 199 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 200 { {NULL, no_argument, NULL, '\0'}, 201 'i', NULL, NULL, ONE_DASH }, 202 { {"just-symbols", required_argument, NULL, 'R'}, 203 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 204 TWO_DASHES }, 205 { {"strip-all", no_argument, NULL, 's'}, 206 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 207 { {"strip-debug", no_argument, NULL, 'S'}, 208 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 209 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 210 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 211 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 212 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 213 { {"trace", no_argument, NULL, 't'}, 214 't', NULL, N_("Trace file opens"), TWO_DASHES }, 215 { {"script", required_argument, NULL, 'T'}, 216 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 217 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 218 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 219 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 220 '\0', NULL, NULL, ONE_DASH }, 221 { {"undefined", required_argument, NULL, 'u'}, 222 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 223 TWO_DASHES }, 224 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, 225 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), 226 TWO_DASHES }, 227 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 228 '\0', N_("[=SECTION]"), 229 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 230 { {"Ur", no_argument, NULL, OPTION_UR}, 231 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 232 { {"version", no_argument, NULL, OPTION_VERSION}, 233 'v', NULL, N_("Print version information"), TWO_DASHES }, 234 { {NULL, no_argument, NULL, '\0'}, 235 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 236 { {"discard-all", no_argument, NULL, 'x'}, 237 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 238 { {"discard-locals", no_argument, NULL, 'X'}, 239 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 240 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 241 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 242 { {"trace-symbol", required_argument, NULL, 'y'}, 243 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 244 { {NULL, required_argument, NULL, '\0'}, 245 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 246 ONE_DASH }, 247 { {"start-group", no_argument, NULL, '('}, 248 '(', NULL, N_("Start a group"), TWO_DASHES }, 249 { {"end-group", no_argument, NULL, ')'}, 250 ')', NULL, N_("End a group"), TWO_DASHES }, 251 { {"accept-unknown-input-arch", no_argument, NULL, 252 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 253 '\0', NULL, 254 N_("Accept input files whose architecture cannot be determined"), 255 TWO_DASHES }, 256 { {"no-accept-unknown-input-arch", no_argument, NULL, 257 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 258 '\0', NULL, N_("Reject input files whose architecture is unknown"), 259 TWO_DASHES }, 260 261 /* The next two options are deprecated because of their similarity to 262 --as-needed and --no-as-needed. They have been replaced by 263 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 264 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 265 '\0', NULL, NULL, NO_HELP }, 266 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 267 '\0', NULL, NULL, NO_HELP }, 268 269 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 270 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 271 TWO_DASHES }, 272 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 273 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 274 " the command line"), 275 TWO_DASHES }, 276 { {"assert", required_argument, NULL, OPTION_ASSERT}, 277 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 278 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 279 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 280 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 281 '\0', NULL, NULL, ONE_DASH }, 282 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 283 '\0', NULL, NULL, ONE_DASH }, 284 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 285 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 286 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 287 '\0', NULL, NULL, ONE_DASH }, 288 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 289 '\0', NULL, NULL, ONE_DASH }, 290 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 291 '\0', NULL, NULL, ONE_DASH }, 292 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 293 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 294 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 295 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 296 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 297 '\0', NULL, N_("Check section addresses for overlaps (default)"), 298 TWO_DASHES }, 299 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 300 '\0', NULL, N_("Do not check section addresses for overlaps"), 301 TWO_DASHES }, 302 { {"copy-dt-needed-entries", no_argument, NULL, 303 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 304 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 305 TWO_DASHES }, 306 { {"no-copy-dt-needed-entries", no_argument, NULL, 307 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 308 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 309 TWO_DASHES }, 310 311 { {"cref", no_argument, NULL, OPTION_CREF}, 312 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 313 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 314 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 315 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 316 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 317 TWO_DASHES }, 318 { {"disable-multiple-abs-defs", no_argument, NULL, 319 OPTION_DISABLE_MULTIPLE_DEFS_ABS}, 320 '\0', NULL, N_("Do not allow multiple definitions with symbols included\n" 321 " in filename invoked by -R or --just-symbols"), 322 TWO_DASHES}, 323 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 324 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 325 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 326 '\0', NULL, N_("Treat warnings as errors"), 327 TWO_DASHES }, 328 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 329 '\0', NULL, N_("Do not treat warnings as errors (default)"), 330 TWO_DASHES }, 331 { {"fini", required_argument, NULL, OPTION_FINI}, 332 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 333 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 334 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 335 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 336 '\0', NULL, N_("Remove unused sections (on some targets)"), 337 TWO_DASHES }, 338 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 339 '\0', NULL, N_("Don't remove unused sections (default)"), 340 TWO_DASHES }, 341 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 342 '\0', NULL, N_("List removed unused sections on stderr"), 343 TWO_DASHES }, 344 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 345 '\0', NULL, N_("Do not list removed unused sections"), 346 TWO_DASHES }, 347 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED}, 348 '\0', NULL, N_("Keep exported symbols when removing unused sections"), 349 TWO_DASHES }, 350 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 351 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 352 TWO_DASHES }, 353 { {"help", no_argument, NULL, OPTION_HELP}, 354 '\0', NULL, N_("Print option help"), TWO_DASHES }, 355 { {"init", required_argument, NULL, OPTION_INIT}, 356 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 357 { {"Map", required_argument, NULL, OPTION_MAP}, 358 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 359 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 360 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 361 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 362 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 363 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 364 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 365 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 366 '\0', NULL, N_("Do not allow unresolved references in object files"), 367 TWO_DASHES }, 368 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 369 '\0', NULL, N_("Allow unresolved references in shared libraries"), 370 TWO_DASHES }, 371 { {"no-allow-shlib-undefined", no_argument, NULL, 372 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 373 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 374 TWO_DASHES }, 375 { {"allow-multiple-definition", no_argument, NULL, 376 OPTION_ALLOW_MULTIPLE_DEFINITION}, 377 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 378 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 379 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 380 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 381 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 382 { {"default-imported-symver", no_argument, NULL, 383 OPTION_DEFAULT_IMPORTED_SYMVER}, 384 '\0', NULL, N_("Create default symbol version for imported symbols"), 385 TWO_DASHES }, 386 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 387 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 388 { {"no-warn-search-mismatch", no_argument, NULL, 389 OPTION_NO_WARN_SEARCH_MISMATCH}, 390 '\0', NULL, N_("Don't warn on finding an incompatible library"), 391 TWO_DASHES}, 392 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 393 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 394 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 395 '\0', NULL, N_("Create an output file even if errors occur"), 396 TWO_DASHES }, 397 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 398 '\0', NULL, NULL, NO_HELP }, 399 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 400 '\0', NULL, N_("Only use library directories specified on\n" 401 " the command line"), 402 ONE_DASH }, 403 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 404 '\0', N_("TARGET"), N_("Specify target of output file"), 405 EXACTLY_TWO_DASHES }, 406 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 407 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 408 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 409 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 410 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 411 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 412 { {"reduce-memory-overheads", no_argument, NULL, 413 OPTION_REDUCE_MEMORY_OVERHEADS}, 414 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 415 TWO_DASHES }, 416 { {"relax", no_argument, NULL, OPTION_RELAX}, 417 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 418 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 419 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 420 { {"retain-symbols-file", required_argument, NULL, 421 OPTION_RETAIN_SYMBOLS_FILE}, 422 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 423 { {"rpath", required_argument, NULL, OPTION_RPATH}, 424 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 425 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 426 '\0', N_("PATH"), N_("Set link time shared library search path"), 427 ONE_DASH }, 428 { {"shared", no_argument, NULL, OPTION_SHARED}, 429 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 430 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 431 '\0', NULL, NULL, ONE_DASH }, 432 { {"pie", no_argument, NULL, OPTION_PIE}, 433 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 434 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 435 '\0', NULL, NULL, TWO_DASHES }, 436 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 437 '\0', N_("[=ascending|descending]"), 438 N_("Sort common symbols by alignment [in specified order]"), 439 TWO_DASHES }, 440 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 441 '\0', NULL, NULL, NO_HELP }, 442 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 443 '\0', N_("name|alignment"), 444 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 445 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 446 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 447 TWO_DASHES }, 448 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 449 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 450 TWO_DASHES }, 451 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 452 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 453 TWO_DASHES }, 454 { {"stats", no_argument, NULL, OPTION_STATS}, 455 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 456 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 457 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 458 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 459 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 460 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 461 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 462 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 463 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 464 TWO_DASHES }, 465 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 466 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 467 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 468 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 469 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 470 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 471 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 472 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 473 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 474 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 475 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 476 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 477 { {"unresolved-symbols=<method>", required_argument, NULL, 478 OPTION_UNRESOLVED_SYMBOLS}, 479 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 480 " ignore-all, report-all, ignore-in-object-files,\n" 481 " ignore-in-shared-libs"), 482 TWO_DASHES }, 483 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 484 '\0', N_("[=NUMBER]"), 485 N_("Output lots of information during link"), TWO_DASHES }, 486 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 487 '\0', NULL, NULL, NO_HELP }, 488 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 489 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 490 { {"version-exports-section", required_argument, NULL, 491 OPTION_VERSION_EXPORTS_SECTION }, 492 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 493 " SYMBOL as the version."), 494 TWO_DASHES }, 495 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 496 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 497 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 498 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 499 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 500 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 501 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 502 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 503 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 504 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 505 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 506 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 507 TWO_DASHES }, 508 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 509 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 510 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 511 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 512 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 513 '\0', NULL, N_("Warn if start of section changes due to alignment"), 514 TWO_DASHES }, 515 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 516 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 517 TWO_DASHES }, 518 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 519 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 520 TWO_DASHES }, 521 { {"warn-unresolved-symbols", no_argument, NULL, 522 OPTION_WARN_UNRESOLVED_SYMBOLS}, 523 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 524 { {"error-unresolved-symbols", no_argument, NULL, 525 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 526 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 527 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 528 '\0', NULL, N_("Include all objects from following archives"), 529 TWO_DASHES }, 530 { {"wrap", required_argument, NULL, OPTION_WRAP}, 531 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 532 { {"ignore-unresolved-symbol", required_argument, NULL, 533 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 534 '\0', N_("SYMBOL"), 535 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 536 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 537 '\0', NULL, N_("Push state of flags governing input file handling"), 538 TWO_DASHES }, 539 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 540 '\0', NULL, N_("Pop state of flags governing input file handling"), 541 TWO_DASHES }, 542 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 543 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 544 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 545 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 546 TWO_DASHES }, 547 { {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED}, 548 '\0', NULL, N_("Show discarded sections in map file output (default)"), 549 TWO_DASHES }, 550 { {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED}, 551 '\0', NULL, N_("Do not show discarded sections in map file output"), 552 TWO_DASHES }, 553 }; 554 555 #define OPTION_COUNT ARRAY_SIZE (ld_options) 556 557 void 558 parse_args (unsigned argc, char **argv) 559 { 560 unsigned i; 561 int is, il, irl; 562 int ingroup = 0; 563 char *default_dirlist = NULL; 564 char *shortopts; 565 struct option *longopts; 566 struct option *really_longopts; 567 int last_optind; 568 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 569 enum symbolic_enum 570 { 571 symbolic_unset = 0, 572 symbolic, 573 symbolic_functions, 574 } opt_symbolic = symbolic_unset; 575 enum dynamic_list_enum 576 { 577 dynamic_list_unset = 0, 578 dynamic_list_data, 579 dynamic_list 580 } opt_dynamic_list = dynamic_list_unset; 581 582 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 583 longopts = (struct option *) 584 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 585 really_longopts = (struct option *) 586 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 587 588 /* Starting the short option string with '-' is for programs that 589 expect options and other ARGV-elements in any order and that care about 590 the ordering of the two. We describe each non-option ARGV-element 591 as if it were the argument of an option with character code 1. */ 592 shortopts[0] = '-'; 593 is = 1; 594 il = 0; 595 irl = 0; 596 for (i = 0; i < OPTION_COUNT; i++) 597 { 598 if (ld_options[i].shortopt != '\0') 599 { 600 shortopts[is] = ld_options[i].shortopt; 601 ++is; 602 if (ld_options[i].opt.has_arg == required_argument 603 || ld_options[i].opt.has_arg == optional_argument) 604 { 605 shortopts[is] = ':'; 606 ++is; 607 if (ld_options[i].opt.has_arg == optional_argument) 608 { 609 shortopts[is] = ':'; 610 ++is; 611 } 612 } 613 } 614 if (ld_options[i].opt.name != NULL) 615 { 616 if (ld_options[i].control == EXACTLY_TWO_DASHES) 617 { 618 really_longopts[irl] = ld_options[i].opt; 619 ++irl; 620 } 621 else 622 { 623 longopts[il] = ld_options[i].opt; 624 ++il; 625 } 626 } 627 } 628 shortopts[is] = '\0'; 629 longopts[il].name = NULL; 630 really_longopts[irl].name = NULL; 631 632 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 633 634 /* The -G option is ambiguous on different platforms. Sometimes it 635 specifies the largest data size to put into the small data 636 section. Sometimes it is equivalent to --shared. Unfortunately, 637 the first form takes an argument, while the second does not. 638 639 We need to permit the --shared form because on some platforms, 640 such as Solaris, gcc -shared will pass -G to the linker. 641 642 To permit either usage, we look through the argument list. If we 643 find -G not followed by a number, we change it into --shared. 644 This will work for most normal cases. */ 645 for (i = 1; i < argc; i++) 646 if (strcmp (argv[i], "-G") == 0 647 && (i + 1 >= argc 648 || ! ISDIGIT (argv[i + 1][0]))) 649 argv[i] = (char *) "--shared"; 650 651 /* Because we permit long options to start with a single dash, and 652 we have a --library option, and the -l option is conventionally 653 used with an immediately following argument, we can have bad 654 results if somebody tries to use -l with a library whose name 655 happens to start with "ibrary", as in -li. We avoid problems by 656 simply turning -l into --library. This means that users will 657 have to use two dashes in order to use --library, which is OK 658 since that's how it is documented. 659 660 FIXME: It's possible that this problem can arise for other short 661 options as well, although the user does always have the recourse 662 of adding a space between the option and the argument. */ 663 for (i = 1; i < argc; i++) 664 { 665 if (argv[i][0] == '-' 666 && argv[i][1] == 'l' 667 && argv[i][2] != '\0') 668 { 669 char *n; 670 671 n = (char *) xmalloc (strlen (argv[i]) + 20); 672 sprintf (n, "--library=%s", argv[i] + 2); 673 argv[i] = n; 674 } 675 } 676 677 last_optind = -1; 678 while (1) 679 { 680 int longind; 681 int optc; 682 static unsigned int defsym_count; 683 684 /* Using last_optind lets us avoid calling ldemul_parse_args 685 multiple times on a single option, which would lead to 686 confusion in the internal static variables maintained by 687 getopt. This could otherwise happen for an argument like 688 -nx, in which the -n is parsed as a single option, and we 689 loop around to pick up the -x. */ 690 if (optind != last_optind) 691 if (ldemul_parse_args (argc, argv)) 692 continue; 693 694 /* getopt_long_only is like getopt_long, but '-' as well as '--' 695 can indicate a long option. */ 696 opterr = 0; 697 last_optind = optind; 698 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 699 if (optc == '?') 700 { 701 optind = last_optind; 702 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 703 } 704 705 if (ldemul_handle_option (optc)) 706 continue; 707 708 if (optc == -1) 709 break; 710 711 switch (optc) 712 { 713 case '?': 714 { 715 /* If the last word on the command line is an option that 716 requires an argument, getopt will refuse to recognise it. 717 Try to catch such options here and issue a more helpful 718 error message than just "unrecognized option". */ 719 int opt; 720 721 for (opt = ARRAY_SIZE (ld_options); opt--;) 722 if (ld_options[opt].opt.has_arg == required_argument 723 /* FIXME: There are a few short options that do not 724 have long equivalents, but which require arguments. 725 We should handle them too. */ 726 && ld_options[opt].opt.name != NULL 727 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 728 { 729 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 730 break; 731 } 732 733 if (opt == -1) 734 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 735 } 736 /* Fall through. */ 737 738 default: 739 einfo (_("%F%P: use the --help option for usage information\n")); 740 break; 741 742 case 1: /* File name. */ 743 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 744 break; 745 746 case OPTION_IGNORE: 747 break; 748 case 'a': 749 /* For HP/UX compatibility. Actually -a shared should mean 750 ``use only shared libraries'' but, then, we don't 751 currently support shared libraries on HP/UX anyhow. */ 752 if (strcmp (optarg, "archive") == 0) 753 input_flags.dynamic = FALSE; 754 else if (strcmp (optarg, "shared") == 0 755 || strcmp (optarg, "default") == 0) 756 input_flags.dynamic = TRUE; 757 else 758 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg); 759 break; 760 case OPTION_ASSERT: 761 /* FIXME: We just ignore these, but we should handle them. */ 762 if (strcmp (optarg, "definitions") == 0) 763 ; 764 else if (strcmp (optarg, "nodefinitions") == 0) 765 ; 766 else if (strcmp (optarg, "nosymbolic") == 0) 767 ; 768 else if (strcmp (optarg, "pure-text") == 0) 769 ; 770 else 771 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg); 772 break; 773 case 'A': 774 ldfile_add_arch (optarg); 775 break; 776 case 'b': 777 lang_add_target (optarg); 778 break; 779 case 'c': 780 ldfile_open_command_file (optarg); 781 parser_input = input_mri_script; 782 yyparse (); 783 break; 784 case OPTION_CALL_SHARED: 785 input_flags.dynamic = TRUE; 786 break; 787 case OPTION_NON_SHARED: 788 input_flags.dynamic = FALSE; 789 break; 790 case OPTION_CREF: 791 command_line.cref = TRUE; 792 link_info.notice_all = TRUE; 793 break; 794 case 'd': 795 command_line.force_common_definition = TRUE; 796 break; 797 case OPTION_FORCE_GROUP_ALLOCATION: 798 command_line.force_group_allocation = TRUE; 799 break; 800 case OPTION_DEFSYM: 801 lex_string = optarg; 802 lex_redirect (optarg, "--defsym", ++defsym_count); 803 parser_input = input_defsym; 804 yyparse (); 805 lex_string = NULL; 806 break; 807 case OPTION_DEMANGLE: 808 demangling = TRUE; 809 if (optarg != NULL) 810 { 811 enum demangling_styles style; 812 813 style = cplus_demangle_name_to_style (optarg); 814 if (style == unknown_demangling) 815 einfo (_("%F%P: unknown demangling style `%s'\n"), 816 optarg); 817 818 cplus_demangle_set_style (style); 819 } 820 break; 821 case 'I': /* Used on Solaris. */ 822 case OPTION_DYNAMIC_LINKER: 823 command_line.interpreter = optarg; 824 link_info.nointerp = 0; 825 break; 826 case OPTION_NO_DYNAMIC_LINKER: 827 link_info.nointerp = 1; 828 break; 829 case OPTION_SYSROOT: 830 /* Already handled in ldmain.c. */ 831 break; 832 case OPTION_EB: 833 command_line.endian = ENDIAN_BIG; 834 break; 835 case OPTION_EL: 836 command_line.endian = ENDIAN_LITTLE; 837 break; 838 case OPTION_EMBEDDED_RELOCS: 839 command_line.embedded_relocs = TRUE; 840 break; 841 case OPTION_EXPORT_DYNAMIC: 842 case 'E': /* HP/UX compatibility. */ 843 link_info.export_dynamic = TRUE; 844 break; 845 case OPTION_NO_EXPORT_DYNAMIC: 846 link_info.export_dynamic = FALSE; 847 break; 848 case 'e': 849 lang_add_entry (optarg, TRUE); 850 break; 851 case 'f': 852 if (command_line.auxiliary_filters == NULL) 853 { 854 command_line.auxiliary_filters = (char **) 855 xmalloc (2 * sizeof (char *)); 856 command_line.auxiliary_filters[0] = optarg; 857 command_line.auxiliary_filters[1] = NULL; 858 } 859 else 860 { 861 int c; 862 char **p; 863 864 c = 0; 865 for (p = command_line.auxiliary_filters; *p != NULL; p++) 866 ++c; 867 command_line.auxiliary_filters = (char **) 868 xrealloc (command_line.auxiliary_filters, 869 (c + 2) * sizeof (char *)); 870 command_line.auxiliary_filters[c] = optarg; 871 command_line.auxiliary_filters[c + 1] = NULL; 872 } 873 break; 874 case 'F': 875 command_line.filter_shlib = optarg; 876 break; 877 case OPTION_FORCE_EXE_SUFFIX: 878 command_line.force_exe_suffix = TRUE; 879 break; 880 case 'G': 881 { 882 char *end; 883 g_switch_value = strtoul (optarg, &end, 0); 884 if (*end) 885 einfo (_("%F%P: invalid number `%s'\n"), optarg); 886 } 887 break; 888 case 'g': 889 /* Ignore. */ 890 break; 891 case OPTION_GC_SECTIONS: 892 link_info.gc_sections = TRUE; 893 break; 894 case OPTION_PRINT_GC_SECTIONS: 895 link_info.print_gc_sections = TRUE; 896 break; 897 case OPTION_GC_KEEP_EXPORTED: 898 link_info.gc_keep_exported = TRUE; 899 break; 900 case OPTION_HELP: 901 help (); 902 xexit (0); 903 break; 904 case 'L': 905 ldfile_add_library_path (optarg, TRUE); 906 break; 907 case 'l': 908 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 909 break; 910 case 'M': 911 config.map_filename = "-"; 912 break; 913 case 'm': 914 /* Ignore. Was handled in a pre-parse. */ 915 break; 916 case OPTION_MAP: 917 config.map_filename = optarg; 918 break; 919 case 'N': 920 config.text_read_only = FALSE; 921 config.magic_demand_paged = FALSE; 922 input_flags.dynamic = FALSE; 923 break; 924 case OPTION_NO_OMAGIC: 925 config.text_read_only = TRUE; 926 config.magic_demand_paged = TRUE; 927 /* NB/ Does not set input_flags.dynamic to TRUE. 928 Use --call-shared or -Bdynamic for this. */ 929 break; 930 case 'n': 931 config.magic_demand_paged = FALSE; 932 input_flags.dynamic = FALSE; 933 break; 934 case OPTION_NO_DEFINE_COMMON: 935 link_info.inhibit_common_definition = TRUE; 936 break; 937 case OPTION_NO_DEMANGLE: 938 demangling = FALSE; 939 break; 940 case OPTION_NO_GC_SECTIONS: 941 link_info.gc_sections = FALSE; 942 break; 943 case OPTION_NO_PRINT_GC_SECTIONS: 944 link_info.print_gc_sections = FALSE; 945 break; 946 case OPTION_NO_KEEP_MEMORY: 947 link_info.keep_memory = FALSE; 948 break; 949 case OPTION_NO_UNDEFINED: 950 link_info.unresolved_syms_in_objects 951 = how_to_report_unresolved_symbols; 952 break; 953 case OPTION_ALLOW_SHLIB_UNDEFINED: 954 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 955 break; 956 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 957 link_info.unresolved_syms_in_shared_libs 958 = how_to_report_unresolved_symbols; 959 break; 960 case OPTION_UNRESOLVED_SYMBOLS: 961 if (strcmp (optarg, "ignore-all") == 0) 962 { 963 link_info.unresolved_syms_in_objects = RM_IGNORE; 964 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 965 } 966 else if (strcmp (optarg, "report-all") == 0) 967 { 968 link_info.unresolved_syms_in_objects 969 = how_to_report_unresolved_symbols; 970 link_info.unresolved_syms_in_shared_libs 971 = how_to_report_unresolved_symbols; 972 } 973 else if (strcmp (optarg, "ignore-in-object-files") == 0) 974 { 975 link_info.unresolved_syms_in_objects = RM_IGNORE; 976 link_info.unresolved_syms_in_shared_libs 977 = how_to_report_unresolved_symbols; 978 } 979 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 980 { 981 link_info.unresolved_syms_in_objects 982 = how_to_report_unresolved_symbols; 983 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 984 } 985 else 986 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg); 987 break; 988 case OPTION_WARN_UNRESOLVED_SYMBOLS: 989 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 990 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 991 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 992 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 993 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 994 break; 995 996 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 997 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 998 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 999 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 1000 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 1001 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 1002 break; 1003 case OPTION_ALLOW_MULTIPLE_DEFINITION: 1004 link_info.allow_multiple_definition = TRUE; 1005 break; 1006 case OPTION_NO_UNDEFINED_VERSION: 1007 link_info.allow_undefined_version = FALSE; 1008 break; 1009 case OPTION_DEFAULT_SYMVER: 1010 link_info.create_default_symver = TRUE; 1011 break; 1012 case OPTION_DEFAULT_IMPORTED_SYMVER: 1013 link_info.default_imported_symver = TRUE; 1014 break; 1015 case OPTION_NO_WARN_MISMATCH: 1016 command_line.warn_mismatch = FALSE; 1017 break; 1018 case OPTION_NO_WARN_SEARCH_MISMATCH: 1019 command_line.warn_search_mismatch = FALSE; 1020 break; 1021 case OPTION_NOINHIBIT_EXEC: 1022 force_make_executable = TRUE; 1023 break; 1024 case OPTION_NOSTDLIB: 1025 config.only_cmd_line_lib_dirs = TRUE; 1026 break; 1027 case OPTION_NO_WHOLE_ARCHIVE: 1028 input_flags.whole_archive = FALSE; 1029 break; 1030 case 'O': 1031 /* FIXME "-O<non-digits> <value>" used to set the address of 1032 section <non-digits>. Was this for compatibility with 1033 something, or can we create a new option to do that 1034 (with a syntax similar to -defsym)? 1035 getopt can't handle two args to an option without kludges. */ 1036 1037 /* Enable optimizations of output files. */ 1038 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1039 break; 1040 case 'o': 1041 lang_add_output (optarg, 0); 1042 break; 1043 case OPTION_OFORMAT: 1044 lang_add_output_format (optarg, NULL, NULL, 0); 1045 break; 1046 case OPTION_OUT_IMPLIB: 1047 command_line.out_implib_filename = xstrdup (optarg); 1048 break; 1049 case OPTION_PRINT_SYSROOT: 1050 if (*ld_sysroot) 1051 puts (ld_sysroot); 1052 xexit (0); 1053 break; 1054 case OPTION_PRINT_OUTPUT_FORMAT: 1055 command_line.print_output_format = TRUE; 1056 break; 1057 #ifdef ENABLE_PLUGINS 1058 case OPTION_PLUGIN: 1059 plugin_opt_plugin (optarg); 1060 break; 1061 case OPTION_PLUGIN_OPT: 1062 if (plugin_opt_plugin_arg (optarg)) 1063 einfo (_("%F%P: bad -plugin-opt option\n")); 1064 break; 1065 #endif /* ENABLE_PLUGINS */ 1066 case 'q': 1067 link_info.emitrelocations = TRUE; 1068 break; 1069 case 'i': 1070 case 'r': 1071 if (optind == last_optind) 1072 /* This can happen if the user put "-rpath,a" on the command 1073 line. (Or something similar. The comma is important). 1074 Getopt becomes confused and thinks that this is a -r option 1075 but it cannot parse the text after the -r so it refuses to 1076 increment the optind counter. Detect this case and issue 1077 an error message here. We cannot just make this a warning, 1078 increment optind, and continue because getopt is too confused 1079 and will seg-fault the next time around. */ 1080 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]); 1081 1082 if (bfd_link_pic (&link_info)) 1083 einfo (_("%F%P: -r and %s may not be used together\n"), 1084 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1085 1086 link_info.type = type_relocatable; 1087 config.build_constructors = FALSE; 1088 config.magic_demand_paged = FALSE; 1089 config.text_read_only = FALSE; 1090 input_flags.dynamic = FALSE; 1091 break; 1092 case 'R': 1093 /* The GNU linker traditionally uses -R to mean to include 1094 only the symbols from a file. The Solaris linker uses -R 1095 to set the path used by the runtime linker to find 1096 libraries. This is the GNU linker -rpath argument. We 1097 try to support both simultaneously by checking the file 1098 named. If it is a directory, rather than a regular file, 1099 we assume -rpath was meant. */ 1100 { 1101 struct stat s; 1102 1103 if (stat (optarg, &s) >= 0 1104 && ! S_ISDIR (s.st_mode)) 1105 { 1106 lang_add_input_file (optarg, 1107 lang_input_file_is_symbols_only_enum, 1108 NULL); 1109 break; 1110 } 1111 } 1112 /* Fall through. */ 1113 case OPTION_RPATH: 1114 if (command_line.rpath == NULL) 1115 command_line.rpath = xstrdup (optarg); 1116 else 1117 { 1118 size_t rpath_len = strlen (command_line.rpath); 1119 size_t optarg_len = strlen (optarg); 1120 char *buf; 1121 char *cp = command_line.rpath; 1122 1123 /* First see whether OPTARG is already in the path. */ 1124 do 1125 { 1126 if (strncmp (optarg, cp, optarg_len) == 0 1127 && (cp[optarg_len] == 0 1128 || cp[optarg_len] == config.rpath_separator)) 1129 /* We found it. */ 1130 break; 1131 1132 /* Not yet found. */ 1133 cp = strchr (cp, config.rpath_separator); 1134 if (cp != NULL) 1135 ++cp; 1136 } 1137 while (cp != NULL); 1138 1139 if (cp == NULL) 1140 { 1141 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1142 sprintf (buf, "%s%c%s", command_line.rpath, 1143 config.rpath_separator, optarg); 1144 free (command_line.rpath); 1145 command_line.rpath = buf; 1146 } 1147 } 1148 break; 1149 case OPTION_RPATH_LINK: 1150 if (command_line.rpath_link == NULL) 1151 command_line.rpath_link = xstrdup (optarg); 1152 else 1153 { 1154 char *buf; 1155 1156 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1157 + strlen (optarg) 1158 + 2); 1159 sprintf (buf, "%s%c%s", command_line.rpath_link, 1160 config.rpath_separator, optarg); 1161 free (command_line.rpath_link); 1162 command_line.rpath_link = buf; 1163 } 1164 break; 1165 case OPTION_NO_RELAX: 1166 DISABLE_RELAXATION; 1167 break; 1168 case OPTION_RELAX: 1169 ENABLE_RELAXATION; 1170 break; 1171 case OPTION_RETAIN_SYMBOLS_FILE: 1172 add_keepsyms_file (optarg); 1173 break; 1174 case 'S': 1175 link_info.strip = strip_debugger; 1176 break; 1177 case 's': 1178 link_info.strip = strip_all; 1179 break; 1180 case OPTION_STRIP_DISCARDED: 1181 link_info.strip_discarded = TRUE; 1182 break; 1183 case OPTION_NO_STRIP_DISCARDED: 1184 link_info.strip_discarded = FALSE; 1185 break; 1186 case OPTION_DISABLE_MULTIPLE_DEFS_ABS: 1187 link_info.prohibit_multiple_definition_absolute = TRUE; 1188 break; 1189 case OPTION_SHARED: 1190 if (config.has_shared) 1191 { 1192 if (bfd_link_relocatable (&link_info)) 1193 einfo (_("%F%P: -r and %s may not be used together\n"), 1194 "-shared"); 1195 1196 link_info.type = type_dll; 1197 /* When creating a shared library, the default 1198 behaviour is to ignore any unresolved references. */ 1199 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1200 link_info.unresolved_syms_in_objects = RM_IGNORE; 1201 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1202 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1203 } 1204 else 1205 einfo (_("%F%P: -shared not supported\n")); 1206 break; 1207 case OPTION_PIE: 1208 if (config.has_shared) 1209 { 1210 if (bfd_link_relocatable (&link_info)) 1211 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie"); 1212 1213 link_info.type = type_pie; 1214 } 1215 else 1216 einfo (_("%F%P: -pie not supported\n")); 1217 break; 1218 case 'h': /* Used on Solaris. */ 1219 case OPTION_SONAME: 1220 if (optarg[0] == '\0' && command_line.soname 1221 && command_line.soname[0]) 1222 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1223 else 1224 command_line.soname = optarg; 1225 break; 1226 case OPTION_SORT_COMMON: 1227 if (optarg == NULL 1228 || strcmp (optarg, N_("descending")) == 0) 1229 config.sort_common = sort_descending; 1230 else if (strcmp (optarg, N_("ascending")) == 0) 1231 config.sort_common = sort_ascending; 1232 else 1233 einfo (_("%F%P: invalid common section sorting option: %s\n"), 1234 optarg); 1235 break; 1236 case OPTION_SORT_SECTION: 1237 if (strcmp (optarg, N_("name")) == 0) 1238 sort_section = by_name; 1239 else if (strcmp (optarg, N_("alignment")) == 0) 1240 sort_section = by_alignment; 1241 else 1242 einfo (_("%F%P: invalid section sorting option: %s\n"), 1243 optarg); 1244 break; 1245 case OPTION_STATS: 1246 config.stats = TRUE; 1247 break; 1248 case OPTION_SYMBOLIC: 1249 opt_symbolic = symbolic; 1250 break; 1251 case OPTION_SYMBOLIC_FUNCTIONS: 1252 opt_symbolic = symbolic_functions; 1253 break; 1254 case 't': 1255 ++trace_files; 1256 break; 1257 case 'T': 1258 previous_script_handle = saved_script_handle; 1259 ldfile_open_script_file (optarg); 1260 parser_input = input_script; 1261 yyparse (); 1262 previous_script_handle = NULL; 1263 break; 1264 case OPTION_DEFAULT_SCRIPT: 1265 command_line.default_script = optarg; 1266 break; 1267 case OPTION_SECTION_START: 1268 { 1269 char *optarg2; 1270 char *sec_name; 1271 int len; 1272 1273 /* Check for <something>=<somthing>... */ 1274 optarg2 = strchr (optarg, '='); 1275 if (optarg2 == NULL) 1276 einfo (_("%F%P: invalid argument to option" 1277 " \"--section-start\"\n")); 1278 1279 optarg2++; 1280 1281 /* So far so good. Are all the args present? */ 1282 if ((*optarg == '\0') || (*optarg2 == '\0')) 1283 einfo (_("%F%P: missing argument(s) to option" 1284 " \"--section-start\"\n")); 1285 1286 /* We must copy the section name as set_section_start 1287 doesn't do it for us. */ 1288 len = optarg2 - optarg; 1289 sec_name = (char *) xmalloc (len); 1290 memcpy (sec_name, optarg, len - 1); 1291 sec_name[len - 1] = 0; 1292 1293 /* Then set it... */ 1294 set_section_start (sec_name, optarg2); 1295 } 1296 break; 1297 case OPTION_TARGET_HELP: 1298 /* Mention any target specific options. */ 1299 ldemul_list_emulation_options (stdout); 1300 exit (0); 1301 case OPTION_TBSS: 1302 set_segment_start (".bss", optarg); 1303 break; 1304 case OPTION_TDATA: 1305 set_segment_start (".data", optarg); 1306 break; 1307 case OPTION_TTEXT: 1308 set_segment_start (".text", optarg); 1309 break; 1310 case OPTION_TTEXT_SEGMENT: 1311 set_segment_start (".text-segment", optarg); 1312 break; 1313 case OPTION_TRODATA_SEGMENT: 1314 set_segment_start (".rodata-segment", optarg); 1315 break; 1316 case OPTION_TLDATA_SEGMENT: 1317 set_segment_start (".ldata-segment", optarg); 1318 break; 1319 case OPTION_TRADITIONAL_FORMAT: 1320 link_info.traditional_format = TRUE; 1321 break; 1322 case OPTION_TASK_LINK: 1323 link_info.task_link = TRUE; 1324 /* Fall through. */ 1325 case OPTION_UR: 1326 if (bfd_link_pic (&link_info)) 1327 einfo (_("%F%P: -r and %s may not be used together\n"), 1328 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1329 1330 link_info.type = type_relocatable; 1331 config.build_constructors = TRUE; 1332 config.magic_demand_paged = FALSE; 1333 config.text_read_only = FALSE; 1334 input_flags.dynamic = FALSE; 1335 break; 1336 case 'u': 1337 ldlang_add_undef (optarg, TRUE); 1338 break; 1339 case OPTION_REQUIRE_DEFINED_SYMBOL: 1340 ldlang_add_require_defined (optarg); 1341 break; 1342 case OPTION_UNIQUE: 1343 if (optarg != NULL) 1344 lang_add_unique (optarg); 1345 else 1346 config.unique_orphan_sections = TRUE; 1347 break; 1348 case OPTION_VERBOSE: 1349 ldversion (1); 1350 version_printed = TRUE; 1351 verbose = TRUE; 1352 overflow_cutoff_limit = -2; 1353 if (optarg != NULL) 1354 { 1355 char *end; 1356 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1357 if (*end) 1358 einfo (_("%F%P: invalid number `%s'\n"), optarg); 1359 #ifdef ENABLE_PLUGINS 1360 report_plugin_symbols = level > 1; 1361 #endif /* ENABLE_PLUGINS */ 1362 } 1363 break; 1364 case 'v': 1365 ldversion (0); 1366 version_printed = TRUE; 1367 break; 1368 case 'V': 1369 ldversion (1); 1370 version_printed = TRUE; 1371 break; 1372 case OPTION_VERSION: 1373 ldversion (2); 1374 xexit (0); 1375 break; 1376 case OPTION_VERSION_SCRIPT: 1377 /* This option indicates a small script that only specifies 1378 version information. Read it, but don't assume that 1379 we've seen a linker script. */ 1380 { 1381 FILE *hold_script_handle; 1382 1383 hold_script_handle = saved_script_handle; 1384 ldfile_open_command_file (optarg); 1385 saved_script_handle = hold_script_handle; 1386 parser_input = input_version_script; 1387 yyparse (); 1388 } 1389 break; 1390 case OPTION_VERSION_EXPORTS_SECTION: 1391 /* This option records a version symbol to be applied to the 1392 symbols listed for export to be found in the object files 1393 .exports sections. */ 1394 command_line.version_exports_section = optarg; 1395 break; 1396 case OPTION_DYNAMIC_LIST_DATA: 1397 opt_dynamic_list = dynamic_list_data; 1398 if (opt_symbolic == symbolic) 1399 opt_symbolic = symbolic_unset; 1400 break; 1401 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1402 lang_append_dynamic_list_cpp_typeinfo (); 1403 if (opt_dynamic_list != dynamic_list_data) 1404 opt_dynamic_list = dynamic_list; 1405 if (opt_symbolic == symbolic) 1406 opt_symbolic = symbolic_unset; 1407 break; 1408 case OPTION_DYNAMIC_LIST_CPP_NEW: 1409 lang_append_dynamic_list_cpp_new (); 1410 if (opt_dynamic_list != dynamic_list_data) 1411 opt_dynamic_list = dynamic_list; 1412 if (opt_symbolic == symbolic) 1413 opt_symbolic = symbolic_unset; 1414 break; 1415 case OPTION_DYNAMIC_LIST: 1416 /* This option indicates a small script that only specifies 1417 a dynamic list. Read it, but don't assume that we've 1418 seen a linker script. */ 1419 { 1420 FILE *hold_script_handle; 1421 1422 hold_script_handle = saved_script_handle; 1423 ldfile_open_command_file (optarg); 1424 saved_script_handle = hold_script_handle; 1425 parser_input = input_dynamic_list; 1426 yyparse (); 1427 } 1428 if (opt_dynamic_list != dynamic_list_data) 1429 opt_dynamic_list = dynamic_list; 1430 if (opt_symbolic == symbolic) 1431 opt_symbolic = symbolic_unset; 1432 break; 1433 case OPTION_WARN_COMMON: 1434 config.warn_common = TRUE; 1435 break; 1436 case OPTION_WARN_CONSTRUCTORS: 1437 config.warn_constructors = TRUE; 1438 break; 1439 case OPTION_WARN_FATAL: 1440 config.fatal_warnings = TRUE; 1441 break; 1442 case OPTION_NO_WARN_FATAL: 1443 config.fatal_warnings = FALSE; 1444 break; 1445 case OPTION_WARN_MULTIPLE_GP: 1446 config.warn_multiple_gp = TRUE; 1447 break; 1448 case OPTION_WARN_ONCE: 1449 config.warn_once = TRUE; 1450 break; 1451 case OPTION_WARN_SECTION_ALIGN: 1452 config.warn_section_align = TRUE; 1453 break; 1454 case OPTION_WARN_SHARED_TEXTREL: 1455 link_info.warn_shared_textrel = TRUE; 1456 break; 1457 case OPTION_WARN_ALTERNATE_EM: 1458 link_info.warn_alternate_em = TRUE; 1459 break; 1460 case OPTION_WHOLE_ARCHIVE: 1461 input_flags.whole_archive = TRUE; 1462 break; 1463 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1464 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1465 break; 1466 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1467 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1468 break; 1469 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1470 input_flags.add_DT_NEEDED_for_regular = TRUE; 1471 break; 1472 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1473 input_flags.add_DT_NEEDED_for_regular = FALSE; 1474 break; 1475 case OPTION_WRAP: 1476 add_wrap (optarg); 1477 break; 1478 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1479 add_ignoresym (&link_info, optarg); 1480 break; 1481 case OPTION_DISCARD_NONE: 1482 link_info.discard = discard_none; 1483 break; 1484 case 'X': 1485 link_info.discard = discard_l; 1486 break; 1487 case 'x': 1488 link_info.discard = discard_all; 1489 break; 1490 case 'Y': 1491 if (CONST_STRNEQ (optarg, "P,")) 1492 optarg += 2; 1493 if (default_dirlist != NULL) 1494 free (default_dirlist); 1495 default_dirlist = xstrdup (optarg); 1496 break; 1497 case 'y': 1498 add_ysym (optarg); 1499 break; 1500 case OPTION_SPARE_DYNAMIC_TAGS: 1501 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1502 break; 1503 case OPTION_SPLIT_BY_RELOC: 1504 if (optarg != NULL) 1505 config.split_by_reloc = strtoul (optarg, NULL, 0); 1506 else 1507 config.split_by_reloc = 32768; 1508 break; 1509 case OPTION_SPLIT_BY_FILE: 1510 if (optarg != NULL) 1511 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1512 else 1513 config.split_by_file = 1; 1514 break; 1515 case OPTION_CHECK_SECTIONS: 1516 command_line.check_section_addresses = 1; 1517 break; 1518 case OPTION_NO_CHECK_SECTIONS: 1519 command_line.check_section_addresses = 0; 1520 break; 1521 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1522 command_line.accept_unknown_input_arch = TRUE; 1523 break; 1524 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1525 command_line.accept_unknown_input_arch = FALSE; 1526 break; 1527 case '(': 1528 lang_enter_group (); 1529 ingroup++; 1530 break; 1531 case ')': 1532 if (! ingroup) 1533 einfo (_("%F%P: group ended before it began (--help for usage)\n")); 1534 1535 lang_leave_group (); 1536 ingroup--; 1537 break; 1538 1539 case OPTION_INIT: 1540 link_info.init_function = optarg; 1541 break; 1542 1543 case OPTION_FINI: 1544 link_info.fini_function = optarg; 1545 break; 1546 1547 case OPTION_REDUCE_MEMORY_OVERHEADS: 1548 link_info.reduce_memory_overheads = TRUE; 1549 if (config.hash_table_size == 0) 1550 config.hash_table_size = 1021; 1551 break; 1552 1553 case OPTION_HASH_SIZE: 1554 { 1555 bfd_size_type new_size; 1556 1557 new_size = strtoul (optarg, NULL, 0); 1558 if (new_size) 1559 config.hash_table_size = new_size; 1560 else 1561 einfo (_("%X%P: --hash-size needs a numeric argument\n")); 1562 } 1563 break; 1564 1565 case OPTION_PUSH_STATE: 1566 input_flags.pushed = xmemdup (&input_flags, 1567 sizeof (input_flags), 1568 sizeof (input_flags)); 1569 break; 1570 1571 case OPTION_POP_STATE: 1572 if (input_flags.pushed == NULL) 1573 einfo (_("%F%P: no state pushed before popping\n")); 1574 else 1575 { 1576 struct lang_input_statement_flags *oldp = input_flags.pushed; 1577 memcpy (&input_flags, oldp, sizeof (input_flags)); 1578 free (oldp); 1579 } 1580 break; 1581 1582 case OPTION_PRINT_MEMORY_USAGE: 1583 command_line.print_memory_usage = TRUE; 1584 break; 1585 1586 case OPTION_ORPHAN_HANDLING: 1587 if (strcasecmp (optarg, "place") == 0) 1588 config.orphan_handling = orphan_handling_place; 1589 else if (strcasecmp (optarg, "warn") == 0) 1590 config.orphan_handling = orphan_handling_warn; 1591 else if (strcasecmp (optarg, "error") == 0) 1592 config.orphan_handling = orphan_handling_error; 1593 else if (strcasecmp (optarg, "discard") == 0) 1594 config.orphan_handling = orphan_handling_discard; 1595 else 1596 einfo (_("%F%P: invalid argument to option" 1597 " \"--orphan-handling\"\n")); 1598 break; 1599 1600 case OPTION_NO_PRINT_MAP_DISCARDED: 1601 config.print_map_discarded = FALSE; 1602 break; 1603 1604 case OPTION_PRINT_MAP_DISCARDED: 1605 config.print_map_discarded = TRUE; 1606 break; 1607 } 1608 } 1609 1610 if (command_line.soname && command_line.soname[0] == '\0') 1611 { 1612 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1613 command_line.soname = NULL; 1614 } 1615 1616 while (ingroup) 1617 { 1618 einfo (_("%P: missing --end-group; added as last command line option\n")); 1619 lang_leave_group (); 1620 ingroup--; 1621 } 1622 1623 if (default_dirlist != NULL) 1624 { 1625 set_default_dirlist (default_dirlist); 1626 free (default_dirlist); 1627 } 1628 1629 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1630 /* FIXME: Should we allow emulations a chance to set this ? */ 1631 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1632 1633 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1634 /* FIXME: Should we allow emulations a chance to set this ? */ 1635 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1636 1637 if (bfd_link_relocatable (&link_info) 1638 && command_line.check_section_addresses < 0) 1639 command_line.check_section_addresses = 0; 1640 1641 /* -Bsymbolic and -Bsymbols-functions are for shared library output. */ 1642 if (bfd_link_dll (&link_info)) 1643 switch (opt_symbolic) 1644 { 1645 case symbolic_unset: 1646 break; 1647 case symbolic: 1648 link_info.symbolic = TRUE; 1649 if (link_info.dynamic_list) 1650 { 1651 struct bfd_elf_version_expr *ent, *next; 1652 for (ent = link_info.dynamic_list->head.list; ent; ent = next) 1653 { 1654 next = ent->next; 1655 free (ent); 1656 } 1657 free (link_info.dynamic_list); 1658 link_info.dynamic_list = NULL; 1659 } 1660 opt_dynamic_list = dynamic_list_unset; 1661 break; 1662 case symbolic_functions: 1663 opt_dynamic_list = dynamic_list_data; 1664 break; 1665 } 1666 1667 switch (opt_dynamic_list) 1668 { 1669 case dynamic_list_unset: 1670 break; 1671 case dynamic_list_data: 1672 link_info.dynamic_data = TRUE; 1673 /* Fall through. */ 1674 case dynamic_list: 1675 link_info.dynamic = TRUE; 1676 break; 1677 } 1678 1679 if (!bfd_link_dll (&link_info)) 1680 { 1681 if (command_line.filter_shlib) 1682 einfo (_("%F%P: -F may not be used without -shared\n")); 1683 if (command_line.auxiliary_filters) 1684 einfo (_("%F%P: -f may not be used without -shared\n")); 1685 } 1686 1687 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1688 don't see how else this can be handled, since in this case we 1689 must preserve all externally visible symbols. */ 1690 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1691 { 1692 link_info.strip = strip_debugger; 1693 if (link_info.discard == discard_sec_merge) 1694 link_info.discard = discard_all; 1695 } 1696 } 1697 1698 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1699 library search path. */ 1700 1701 static void 1702 set_default_dirlist (char *dirlist_ptr) 1703 { 1704 char *p; 1705 1706 while (1) 1707 { 1708 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1709 if (p != NULL) 1710 *p = '\0'; 1711 if (*dirlist_ptr != '\0') 1712 ldfile_add_library_path (dirlist_ptr, TRUE); 1713 if (p == NULL) 1714 break; 1715 dirlist_ptr = p + 1; 1716 } 1717 } 1718 1719 static void 1720 set_section_start (char *sect, char *valstr) 1721 { 1722 const char *end; 1723 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1724 if (*end) 1725 einfo (_("%F%P: invalid hex number `%s'\n"), valstr); 1726 lang_section_start (sect, exp_intop (val), NULL); 1727 } 1728 1729 static void 1730 set_segment_start (const char *section, char *valstr) 1731 { 1732 const char *name; 1733 const char *end; 1734 segment_type *seg; 1735 1736 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1737 if (*end) 1738 einfo (_("%F%P: invalid hex number `%s'\n"), valstr); 1739 /* If we already have an entry for this segment, update the existing 1740 value. */ 1741 name = section + 1; 1742 for (seg = segments; seg; seg = seg->next) 1743 if (strcmp (seg->name, name) == 0) 1744 { 1745 seg->value = val; 1746 lang_section_start (section, exp_intop (val), seg); 1747 return; 1748 } 1749 /* There was no existing value so we must create a new segment 1750 entry. */ 1751 seg = stat_alloc (sizeof (*seg)); 1752 seg->name = name; 1753 seg->value = val; 1754 seg->used = FALSE; 1755 /* Add it to the linked list of segments. */ 1756 seg->next = segments; 1757 segments = seg; 1758 /* Historically, -Ttext and friends set the base address of a 1759 particular section. For backwards compatibility, we still do 1760 that. If a SEGMENT_START directive is seen, the section address 1761 assignment will be disabled. */ 1762 lang_section_start (section, exp_intop (val), seg); 1763 } 1764 1765 static void 1766 elf_shlib_list_options (FILE *file) 1767 { 1768 fprintf (file, _("\ 1769 --audit=AUDITLIB Specify a library to use for auditing\n")); 1770 fprintf (file, _("\ 1771 -Bgroup Selects group name lookup rules for DSO\n")); 1772 fprintf (file, _("\ 1773 --disable-new-dtags Disable new dynamic tags\n")); 1774 fprintf (file, _("\ 1775 --enable-new-dtags Enable new dynamic tags\n")); 1776 fprintf (file, _("\ 1777 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1778 fprintf (file, _("\ 1779 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n")); 1780 fprintf (file, _("\ 1781 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1782 fprintf (file, _("\ 1783 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1784 fprintf (file, _("\ 1785 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1786 Specify a library to use for auditing dependencies\n")); 1787 fprintf (file, _("\ 1788 -z combreloc Merge dynamic relocs into one section and sort\n")); 1789 fprintf (file, _("\ 1790 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1791 fprintf (file, _("\ 1792 -z global Make symbols in DSO available for subsequently\n\ 1793 loaded objects\n")); 1794 fprintf (file, _("\ 1795 -z initfirst Mark DSO to be initialized first at runtime\n")); 1796 fprintf (file, _("\ 1797 -z interpose Mark object to interpose all DSOs but executable\n")); 1798 fprintf (file, _("\ 1799 -z lazy Mark object lazy runtime binding (default)\n")); 1800 fprintf (file, _("\ 1801 -z loadfltr Mark object requiring immediate process\n")); 1802 fprintf (file, _("\ 1803 -z nocopyreloc Don't create copy relocs\n")); 1804 fprintf (file, _("\ 1805 -z nodefaultlib Mark object not to use default search paths\n")); 1806 fprintf (file, _("\ 1807 -z nodelete Mark DSO non-deletable at runtime\n")); 1808 fprintf (file, _("\ 1809 -z nodlopen Mark DSO not available to dlopen\n")); 1810 fprintf (file, _("\ 1811 -z nodump Mark DSO not available to dldump\n")); 1812 fprintf (file, _("\ 1813 -z now Mark object non-lazy runtime binding\n")); 1814 fprintf (file, _("\ 1815 -z origin Mark object requiring immediate $ORIGIN\n\ 1816 processing at runtime\n")); 1817 #if DEFAULT_LD_Z_RELRO 1818 fprintf (file, _("\ 1819 -z relro Create RELRO program header (default)\n")); 1820 fprintf (file, _("\ 1821 -z norelro Don't create RELRO program header\n")); 1822 #else 1823 fprintf (file, _("\ 1824 -z relro Create RELRO program header\n")); 1825 fprintf (file, _("\ 1826 -z norelro Don't create RELRO program header (default)\n")); 1827 #endif 1828 #if DEFAULT_LD_Z_SEPARATE_CODE 1829 fprintf (file, _("\ 1830 -z separate-code Create separate code program header (default)\n")); 1831 fprintf (file, _("\ 1832 -z noseparate-code Don't create separate code program header\n")); 1833 #else 1834 fprintf (file, _("\ 1835 -z separate-code Create separate code program header\n")); 1836 fprintf (file, _("\ 1837 -z noseparate-code Don't create separate code program header (default)\n")); 1838 #endif 1839 fprintf (file, _("\ 1840 -z common Generate common symbols with STT_COMMON type\n")); 1841 fprintf (file, _("\ 1842 -z nocommon Generate common symbols with STT_OBJECT type\n")); 1843 fprintf (file, _("\ 1844 -z stack-size=SIZE Set size of stack segment\n")); 1845 fprintf (file, _("\ 1846 -z text Treat DT_TEXTREL in shared object as error\n")); 1847 fprintf (file, _("\ 1848 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1849 fprintf (file, _("\ 1850 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1851 } 1852 1853 static void 1854 elf_static_list_options (FILE *file) 1855 { 1856 fprintf (file, _("\ 1857 --build-id[=STYLE] Generate build ID note\n")); 1858 fprintf (file, _("\ 1859 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1860 Compress DWARF debug sections using zlib\n")); 1861 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1862 fprintf (file, _("\ 1863 Default: zlib-gabi\n")); 1864 #else 1865 fprintf (file, _("\ 1866 Default: none\n")); 1867 #endif 1868 fprintf (file, _("\ 1869 -z common-page-size=SIZE Set common page size to SIZE\n")); 1870 fprintf (file, _("\ 1871 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1872 fprintf (file, _("\ 1873 -z defs Report unresolved symbols in object files\n")); 1874 fprintf (file, _("\ 1875 -z muldefs Allow multiple definitions\n")); 1876 fprintf (file, _("\ 1877 -z execstack Mark executable as requiring executable stack\n")); 1878 fprintf (file, _("\ 1879 -z noexecstack Mark executable as not requiring executable stack\n")); 1880 fprintf (file, _("\ 1881 -z globalaudit Mark executable requiring global auditing\n")); 1882 } 1883 1884 static void 1885 elf_plt_unwind_list_options (FILE *file) 1886 { 1887 fprintf (file, _("\ 1888 --ld-generated-unwind-info Generate exception handling info for PLT\n")); 1889 fprintf (file, _("\ 1890 --no-ld-generated-unwind-info\n\ 1891 Don't generate exception handling info for PLT\n")); 1892 } 1893 1894 static void 1895 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1896 bfd_boolean plt_unwind) 1897 { 1898 if (!elf) 1899 return; 1900 printf (_("ELF emulations:\n")); 1901 if (plt_unwind) 1902 elf_plt_unwind_list_options (file); 1903 elf_static_list_options (file); 1904 if (shlib) 1905 elf_shlib_list_options (file); 1906 } 1907 1908 1909 /* Print help messages for the options. */ 1910 1911 static void 1912 help (void) 1913 { 1914 unsigned i; 1915 const char **targets, **pp; 1916 int len; 1917 1918 printf (_("Usage: %s [options] file...\n"), program_name); 1919 1920 printf (_("Options:\n")); 1921 for (i = 0; i < OPTION_COUNT; i++) 1922 { 1923 if (ld_options[i].doc != NULL) 1924 { 1925 bfd_boolean comma; 1926 unsigned j; 1927 1928 printf (" "); 1929 1930 comma = FALSE; 1931 len = 2; 1932 1933 j = i; 1934 do 1935 { 1936 if (ld_options[j].shortopt != '\0' 1937 && ld_options[j].control != NO_HELP) 1938 { 1939 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1940 len += (comma ? 2 : 0) + 2; 1941 if (ld_options[j].arg != NULL) 1942 { 1943 if (ld_options[j].opt.has_arg != optional_argument) 1944 { 1945 printf (" "); 1946 ++len; 1947 } 1948 printf ("%s", _(ld_options[j].arg)); 1949 len += strlen (_(ld_options[j].arg)); 1950 } 1951 comma = TRUE; 1952 } 1953 ++j; 1954 } 1955 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1956 1957 j = i; 1958 do 1959 { 1960 if (ld_options[j].opt.name != NULL 1961 && ld_options[j].control != NO_HELP) 1962 { 1963 int two_dashes = 1964 (ld_options[j].control == TWO_DASHES 1965 || ld_options[j].control == EXACTLY_TWO_DASHES); 1966 1967 printf ("%s-%s%s", 1968 comma ? ", " : "", 1969 two_dashes ? "-" : "", 1970 ld_options[j].opt.name); 1971 len += ((comma ? 2 : 0) 1972 + 1 1973 + (two_dashes ? 1 : 0) 1974 + strlen (ld_options[j].opt.name)); 1975 if (ld_options[j].arg != NULL) 1976 { 1977 printf (" %s", _(ld_options[j].arg)); 1978 len += 1 + strlen (_(ld_options[j].arg)); 1979 } 1980 comma = TRUE; 1981 } 1982 ++j; 1983 } 1984 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1985 1986 if (len >= 30) 1987 { 1988 printf ("\n"); 1989 len = 0; 1990 } 1991 1992 for (; len < 30; len++) 1993 putchar (' '); 1994 1995 printf ("%s\n", _(ld_options[i].doc)); 1996 } 1997 } 1998 printf (_(" @FILE")); 1999 for (len = strlen (" @FILE"); len < 30; len++) 2000 putchar (' '); 2001 printf (_("Read options from FILE\n")); 2002 2003 /* Note: Various tools (such as libtool) depend upon the 2004 format of the listings below - do not change them. */ 2005 /* xgettext:c-format */ 2006 printf (_("%s: supported targets:"), program_name); 2007 targets = bfd_target_list (); 2008 for (pp = targets; *pp != NULL; pp++) 2009 printf (" %s", *pp); 2010 free (targets); 2011 printf ("\n"); 2012 2013 /* xgettext:c-format */ 2014 printf (_("%s: supported emulations: "), program_name); 2015 ldemul_list_emulations (stdout); 2016 printf ("\n"); 2017 2018 /* xgettext:c-format */ 2019 printf (_("%s: emulation specific options:\n"), program_name); 2020 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 2021 ELF_PLT_UNWIND_LIST_OPTIONS); 2022 ldemul_list_emulation_options (stdout); 2023 printf ("\n"); 2024 2025 if (REPORT_BUGS_TO[0]) 2026 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 2027 } 2028