lexsup.c revision 1.1.1.1
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, 2006, 2007 4 Free Software Foundation, Inc. 5 6 This file is part of the GNU Binutils. 7 8 This program 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 3 of the License, or 11 (at your option) any later version. 12 13 This program 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 this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21 MA 02110-1301, USA. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "bfdver.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_NO_WARN_SEARCH_MISMATCH, 87 OPTION_NOINHIBIT_EXEC, 88 OPTION_NON_SHARED, 89 OPTION_NO_WHOLE_ARCHIVE, 90 OPTION_OFORMAT, 91 OPTION_RELAX, 92 OPTION_RETAIN_SYMBOLS_FILE, 93 OPTION_RPATH, 94 OPTION_RPATH_LINK, 95 OPTION_SHARED, 96 OPTION_SONAME, 97 OPTION_SORT_COMMON, 98 OPTION_SORT_SECTION, 99 OPTION_STATS, 100 OPTION_SYMBOLIC, 101 OPTION_SYMBOLIC_FUNCTIONS, 102 OPTION_TASK_LINK, 103 OPTION_TBSS, 104 OPTION_TDATA, 105 OPTION_TTEXT, 106 OPTION_TRADITIONAL_FORMAT, 107 OPTION_UR, 108 OPTION_VERBOSE, 109 OPTION_VERSION, 110 OPTION_VERSION_SCRIPT, 111 OPTION_VERSION_EXPORTS_SECTION, 112 OPTION_DYNAMIC_LIST, 113 OPTION_DYNAMIC_LIST_CPP_NEW, 114 OPTION_DYNAMIC_LIST_CPP_TYPEINFO, 115 OPTION_DYNAMIC_LIST_DATA, 116 OPTION_WARN_COMMON, 117 OPTION_WARN_CONSTRUCTORS, 118 OPTION_WARN_FATAL, 119 OPTION_NO_WARN_FATAL, 120 OPTION_WARN_MULTIPLE_GP, 121 OPTION_WARN_ONCE, 122 OPTION_WARN_SECTION_ALIGN, 123 OPTION_SPLIT_BY_RELOC, 124 OPTION_SPLIT_BY_FILE , 125 OPTION_WHOLE_ARCHIVE, 126 OPTION_ADD_NEEDED, 127 OPTION_NO_ADD_NEEDED, 128 OPTION_AS_NEEDED, 129 OPTION_NO_AS_NEEDED, 130 OPTION_WRAP, 131 OPTION_FORCE_EXE_SUFFIX, 132 OPTION_GC_SECTIONS, 133 OPTION_NO_GC_SECTIONS, 134 OPTION_PRINT_GC_SECTIONS, 135 OPTION_NO_PRINT_GC_SECTIONS, 136 OPTION_HASH_SIZE, 137 OPTION_CHECK_SECTIONS, 138 OPTION_NO_CHECK_SECTIONS, 139 OPTION_NO_UNDEFINED, 140 OPTION_INIT, 141 OPTION_FINI, 142 OPTION_SECTION_START, 143 OPTION_UNIQUE, 144 OPTION_TARGET_HELP, 145 OPTION_ALLOW_SHLIB_UNDEFINED, 146 OPTION_NO_ALLOW_SHLIB_UNDEFINED, 147 OPTION_ALLOW_MULTIPLE_DEFINITION, 148 OPTION_NO_UNDEFINED_VERSION, 149 OPTION_DEFAULT_SYMVER, 150 OPTION_DEFAULT_IMPORTED_SYMVER, 151 OPTION_DISCARD_NONE, 152 OPTION_SPARE_DYNAMIC_TAGS, 153 OPTION_NO_DEFINE_COMMON, 154 OPTION_NOSTDLIB, 155 OPTION_NO_OMAGIC, 156 OPTION_STRIP_DISCARDED, 157 OPTION_NO_STRIP_DISCARDED, 158 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, 159 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, 160 OPTION_PIE, 161 OPTION_UNRESOLVED_SYMBOLS, 162 OPTION_WARN_UNRESOLVED_SYMBOLS, 163 OPTION_ERROR_UNRESOLVED_SYMBOLS, 164 OPTION_WARN_SHARED_TEXTREL, 165 OPTION_REDUCE_MEMORY_OVERHEADS, 166 OPTION_DEFAULT_SCRIPT 167 }; 168 169 /* The long options. This structure is used for both the option 170 parsing and the help text. */ 171 172 struct ld_option 173 { 174 /* The long option information. */ 175 struct option opt; 176 /* The short option with the same meaning ('\0' if none). */ 177 char shortopt; 178 /* The name of the argument (NULL if none). */ 179 const char *arg; 180 /* The documentation string. If this is NULL, this is a synonym for 181 the previous option. */ 182 const char *doc; 183 enum { 184 /* Use one dash before long option name. */ 185 ONE_DASH, 186 /* Use two dashes before long option name. */ 187 TWO_DASHES, 188 /* Only accept two dashes before the long option name. 189 This is an overloading of the use of this enum, since originally it 190 was only intended to tell the --help display function how to display 191 the long option name. This feature was added in order to resolve 192 the confusion about the -omagic command line switch. Is it setting 193 the output file name to "magic" or is it setting the NMAGIC flag on 194 the output ? It has been decided that it is setting the output file 195 name, and that if you want to set the NMAGIC flag you should use -N 196 or --omagic. */ 197 EXACTLY_TWO_DASHES, 198 /* Don't mention this option in --help output. */ 199 NO_HELP 200 } control; 201 }; 202 203 static const struct ld_option ld_options[] = 204 { 205 { {NULL, required_argument, NULL, '\0'}, 206 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 207 ONE_DASH }, 208 { {"architecture", required_argument, NULL, 'A'}, 209 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 210 { {"format", required_argument, NULL, 'b'}, 211 'b', N_("TARGET"), N_("Specify target for following input files"), 212 TWO_DASHES }, 213 { {"mri-script", required_argument, NULL, 'c'}, 214 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 215 { {"dc", no_argument, NULL, 'd'}, 216 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 217 { {"dp", no_argument, NULL, 'd'}, 218 '\0', NULL, NULL, ONE_DASH }, 219 { {"entry", required_argument, NULL, 'e'}, 220 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 221 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 222 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 223 { {"EB", no_argument, NULL, OPTION_EB}, 224 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 225 { {"EL", no_argument, NULL, OPTION_EL}, 226 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 227 { {"auxiliary", required_argument, NULL, 'f'}, 228 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 229 TWO_DASHES }, 230 { {"filter", required_argument, NULL, 'F'}, 231 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 232 TWO_DASHES }, 233 { {NULL, no_argument, NULL, '\0'}, 234 'g', NULL, N_("Ignored"), ONE_DASH }, 235 { {"gpsize", required_argument, NULL, 'G'}, 236 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 237 TWO_DASHES }, 238 { {"soname", required_argument, NULL, OPTION_SONAME}, 239 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 240 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 241 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 242 TWO_DASHES }, 243 { {"library", required_argument, NULL, 'l'}, 244 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 245 { {"library-path", required_argument, NULL, 'L'}, 246 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 247 TWO_DASHES }, 248 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 249 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 250 { {NULL, required_argument, NULL, '\0'}, 251 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 252 { {"print-map", no_argument, NULL, 'M'}, 253 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 254 { {"nmagic", no_argument, NULL, 'n'}, 255 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 256 { {"omagic", no_argument, NULL, 'N'}, 257 'N', NULL, N_("Do not page align data, do not make text readonly"), 258 EXACTLY_TWO_DASHES }, 259 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 260 '\0', NULL, N_("Page align data, make text readonly"), 261 EXACTLY_TWO_DASHES }, 262 { {"output", required_argument, NULL, 'o'}, 263 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 264 { {NULL, required_argument, NULL, '\0'}, 265 'O', NULL, N_("Optimize output file"), ONE_DASH }, 266 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 267 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 268 { {"emit-relocs", no_argument, NULL, 'q'}, 269 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 270 { {"relocatable", no_argument, NULL, 'r'}, 271 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 272 { {NULL, no_argument, NULL, '\0'}, 273 'i', NULL, NULL, ONE_DASH }, 274 { {"just-symbols", required_argument, NULL, 'R'}, 275 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 276 TWO_DASHES }, 277 { {"strip-all", no_argument, NULL, 's'}, 278 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 279 { {"strip-debug", no_argument, NULL, 'S'}, 280 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 281 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 282 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 283 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 284 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 285 { {"trace", no_argument, NULL, 't'}, 286 't', NULL, N_("Trace file opens"), TWO_DASHES }, 287 { {"script", required_argument, NULL, 'T'}, 288 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 289 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 290 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 291 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 292 '\0', NULL, NULL, ONE_DASH }, 293 { {"undefined", required_argument, NULL, 'u'}, 294 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 295 TWO_DASHES }, 296 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 297 '\0', N_("[=SECTION]"), 298 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 299 { {"Ur", no_argument, NULL, OPTION_UR}, 300 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 301 { {"version", no_argument, NULL, OPTION_VERSION}, 302 'v', NULL, N_("Print version information"), TWO_DASHES }, 303 { {NULL, no_argument, NULL, '\0'}, 304 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 305 { {"discard-all", no_argument, NULL, 'x'}, 306 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 307 { {"discard-locals", no_argument, NULL, 'X'}, 308 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 309 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 310 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 311 { {"trace-symbol", required_argument, NULL, 'y'}, 312 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 313 { {NULL, required_argument, NULL, '\0'}, 314 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 315 ONE_DASH }, 316 { {"start-group", no_argument, NULL, '('}, 317 '(', NULL, N_("Start a group"), TWO_DASHES }, 318 { {"end-group", no_argument, NULL, ')'}, 319 ')', NULL, N_("End a group"), TWO_DASHES }, 320 { {"accept-unknown-input-arch", no_argument, NULL, 321 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 322 '\0', NULL, 323 N_("Accept input files whose architecture cannot be determined"), 324 TWO_DASHES }, 325 { {"no-accept-unknown-input-arch", no_argument, NULL, 326 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 327 '\0', NULL, N_("Reject input files whose architecture is unknown"), 328 TWO_DASHES }, 329 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED}, 330 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n" 331 " following dynamic libs"), 332 TWO_DASHES }, 333 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED}, 334 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n" 335 " in following dynamic libs"), 336 TWO_DASHES }, 337 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 338 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 339 TWO_DASHES }, 340 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 341 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), 342 TWO_DASHES }, 343 { {"assert", required_argument, NULL, OPTION_ASSERT}, 344 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 345 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 346 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 347 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 348 '\0', NULL, NULL, ONE_DASH }, 349 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 350 '\0', NULL, NULL, ONE_DASH }, 351 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 352 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 353 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 354 '\0', NULL, NULL, ONE_DASH }, 355 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 356 '\0', NULL, NULL, ONE_DASH }, 357 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 358 '\0', NULL, NULL, ONE_DASH }, 359 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 360 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 361 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 362 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 363 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 364 '\0', NULL, N_("Check section addresses for overlaps (default)"), 365 TWO_DASHES }, 366 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 367 '\0', NULL, N_("Do not check section addresses for overlaps"), 368 TWO_DASHES }, 369 { {"cref", no_argument, NULL, OPTION_CREF}, 370 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 371 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 372 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 373 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 374 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 375 TWO_DASHES }, 376 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 377 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 378 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 379 '\0', NULL, N_("Treat warnings as errors"), 380 TWO_DASHES }, 381 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 382 '\0', NULL, N_("Do not treat warnings as errors (default)"), 383 TWO_DASHES }, 384 { {"fini", required_argument, NULL, OPTION_FINI}, 385 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 386 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 387 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 388 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 389 '\0', NULL, N_("Remove unused sections (on some targets)"), 390 TWO_DASHES }, 391 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 392 '\0', NULL, N_("Don't remove unused sections (default)"), 393 TWO_DASHES }, 394 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 395 '\0', NULL, N_("List removed unused sections on stderr"), 396 TWO_DASHES }, 397 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 398 '\0', NULL, N_("Do not list removed unused sections"), 399 TWO_DASHES }, 400 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 401 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 402 TWO_DASHES }, 403 { {"help", no_argument, NULL, OPTION_HELP}, 404 '\0', NULL, N_("Print option help"), TWO_DASHES }, 405 { {"init", required_argument, NULL, OPTION_INIT}, 406 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 407 { {"Map", required_argument, NULL, OPTION_MAP}, 408 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 409 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 410 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 411 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 412 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 413 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 414 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 415 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 416 '\0', NULL, N_("Do not allow unresolved references in object files"), 417 TWO_DASHES }, 418 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 419 '\0', NULL, N_("Allow unresolved references in shared libaries"), 420 TWO_DASHES }, 421 { {"no-allow-shlib-undefined", no_argument, NULL, 422 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 423 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 424 TWO_DASHES }, 425 { {"allow-multiple-definition", no_argument, NULL, 426 OPTION_ALLOW_MULTIPLE_DEFINITION}, 427 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 428 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 429 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 430 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 431 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 432 { {"default-imported-symver", no_argument, NULL, 433 OPTION_DEFAULT_IMPORTED_SYMVER}, 434 '\0', NULL, N_("Create default symbol version for imported symbols"), 435 TWO_DASHES }, 436 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 437 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 438 { {"no-warn-search-mismatch", no_argument, NULL, 439 OPTION_NO_WARN_SEARCH_MISMATCH}, 440 '\0', NULL, N_("Don't warn on finding an incompatible library"), 441 TWO_DASHES}, 442 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 443 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 444 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 445 '\0', NULL, N_("Create an output file even if errors occur"), 446 TWO_DASHES }, 447 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 448 '\0', NULL, NULL, NO_HELP }, 449 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 450 '\0', NULL, N_("Only use library directories specified on\n" 451 " the command line"), 452 ONE_DASH }, 453 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 454 '\0', N_("TARGET"), N_("Specify target of output file"), 455 EXACTLY_TWO_DASHES }, 456 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 457 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 458 { {"reduce-memory-overheads", no_argument, NULL, 459 OPTION_REDUCE_MEMORY_OVERHEADS}, 460 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 461 TWO_DASHES }, 462 { {"relax", no_argument, NULL, OPTION_RELAX}, 463 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 464 { {"retain-symbols-file", required_argument, NULL, 465 OPTION_RETAIN_SYMBOLS_FILE}, 466 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 467 { {"rpath", required_argument, NULL, OPTION_RPATH}, 468 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 469 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 470 '\0', N_("PATH"), N_("Set link time shared library search path"), 471 ONE_DASH }, 472 { {"shared", no_argument, NULL, OPTION_SHARED}, 473 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 474 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 475 '\0', NULL, NULL, ONE_DASH }, 476 { {"pie", no_argument, NULL, OPTION_PIE}, 477 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 478 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 479 '\0', NULL, NULL, TWO_DASHES }, 480 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 481 '\0', N_("[=ascending|descending]"), 482 N_("Sort common symbols by alignment [in specified order]"), 483 TWO_DASHES }, 484 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 485 '\0', NULL, NULL, NO_HELP }, 486 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 487 '\0', N_("name|alignment"), 488 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 489 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 490 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 491 TWO_DASHES }, 492 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 493 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 494 TWO_DASHES }, 495 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 496 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 497 TWO_DASHES }, 498 { {"stats", no_argument, NULL, OPTION_STATS}, 499 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 500 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 501 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 502 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 503 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 504 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 505 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 506 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 507 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 508 TWO_DASHES }, 509 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 510 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 511 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 512 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 513 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 514 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 515 { {"unresolved-symbols=<method>", required_argument, NULL, 516 OPTION_UNRESOLVED_SYMBOLS}, 517 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 518 " ignore-all, report-all, ignore-in-object-files,\n" 519 " ignore-in-shared-libs"), 520 TWO_DASHES }, 521 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 522 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 523 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 524 '\0', NULL, NULL, NO_HELP }, 525 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 526 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 527 { {"version-exports-section", required_argument, NULL, 528 OPTION_VERSION_EXPORTS_SECTION }, 529 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 530 " SYMBOL as the version."), 531 TWO_DASHES }, 532 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 533 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 534 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 535 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 536 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 537 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 538 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 539 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 540 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 541 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 542 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 543 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 544 TWO_DASHES }, 545 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 546 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 547 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 548 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 549 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 550 '\0', NULL, N_("Warn if start of section changes due to alignment"), 551 TWO_DASHES }, 552 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 553 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 554 TWO_DASHES }, 555 { {"warn-unresolved-symbols", no_argument, NULL, 556 OPTION_WARN_UNRESOLVED_SYMBOLS}, 557 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 558 { {"error-unresolved-symbols", no_argument, NULL, 559 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 560 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 561 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 562 '\0', NULL, N_("Include all objects from following archives"), 563 TWO_DASHES }, 564 { {"wrap", required_argument, NULL, OPTION_WRAP}, 565 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 566 }; 567 568 #define OPTION_COUNT ARRAY_SIZE (ld_options) 569 570 void 571 parse_args (unsigned argc, char **argv) 572 { 573 unsigned i; 574 int is, il, irl; 575 int ingroup = 0; 576 char *default_dirlist = NULL; 577 char *shortopts; 578 struct option *longopts; 579 struct option *really_longopts; 580 int last_optind; 581 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 582 583 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 584 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 585 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 586 587 /* Starting the short option string with '-' is for programs that 588 expect options and other ARGV-elements in any order and that care about 589 the ordering of the two. We describe each non-option ARGV-element 590 as if it were the argument of an option with character code 1. */ 591 shortopts[0] = '-'; 592 is = 1; 593 il = 0; 594 irl = 0; 595 for (i = 0; i < OPTION_COUNT; i++) 596 { 597 if (ld_options[i].shortopt != '\0') 598 { 599 shortopts[is] = ld_options[i].shortopt; 600 ++is; 601 if (ld_options[i].opt.has_arg == required_argument 602 || ld_options[i].opt.has_arg == optional_argument) 603 { 604 shortopts[is] = ':'; 605 ++is; 606 if (ld_options[i].opt.has_arg == optional_argument) 607 { 608 shortopts[is] = ':'; 609 ++is; 610 } 611 } 612 } 613 if (ld_options[i].opt.name != NULL) 614 { 615 if (ld_options[i].control == EXACTLY_TWO_DASHES) 616 { 617 really_longopts[irl] = ld_options[i].opt; 618 ++irl; 619 } 620 else 621 { 622 longopts[il] = ld_options[i].opt; 623 ++il; 624 } 625 } 626 } 627 shortopts[is] = '\0'; 628 longopts[il].name = NULL; 629 really_longopts[irl].name = NULL; 630 631 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 632 633 /* The -G option is ambiguous on different platforms. Sometimes it 634 specifies the largest data size to put into the small data 635 section. Sometimes it is equivalent to --shared. Unfortunately, 636 the first form takes an argument, while the second does not. 637 638 We need to permit the --shared form because on some platforms, 639 such as Solaris, gcc -shared will pass -G to the linker. 640 641 To permit either usage, we look through the argument list. If we 642 find -G not followed by a number, we change it into --shared. 643 This will work for most normal cases. */ 644 for (i = 1; i < argc; i++) 645 if (strcmp (argv[i], "-G") == 0 646 && (i + 1 >= argc 647 || ! ISDIGIT (argv[i + 1][0]))) 648 argv[i] = (char *) "--shared"; 649 650 /* Because we permit long options to start with a single dash, and 651 we have a --library option, and the -l option is conventionally 652 used with an immediately following argument, we can have bad 653 results if somebody tries to use -l with a library whose name 654 happens to start with "ibrary", as in -li. We avoid problems by 655 simply turning -l into --library. This means that users will 656 have to use two dashes in order to use --library, which is OK 657 since that's how it is documented. 658 659 FIXME: It's possible that this problem can arise for other short 660 options as well, although the user does always have the recourse 661 of adding a space between the option and the argument. */ 662 for (i = 1; i < argc; i++) 663 { 664 if (argv[i][0] == '-' 665 && argv[i][1] == 'l' 666 && argv[i][2] != '\0') 667 { 668 char *n; 669 670 n = xmalloc (strlen (argv[i]) + 20); 671 sprintf (n, "--library=%s", argv[i] + 2); 672 argv[i] = n; 673 } 674 } 675 676 last_optind = -1; 677 while (1) 678 { 679 int longind; 680 int optc; 681 682 /* Using last_optind lets us avoid calling ldemul_parse_args 683 multiple times on a single option, which would lead to 684 confusion in the internal static variables maintained by 685 getopt. This could otherwise happen for an argument like 686 -nx, in which the -n is parsed as a single option, and we 687 loop around to pick up the -x. */ 688 if (optind != last_optind) 689 if (ldemul_parse_args (argc, argv)) 690 continue; 691 692 /* getopt_long_only is like getopt_long, but '-' as well as '--' 693 can indicate a long option. */ 694 opterr = 0; 695 last_optind = optind; 696 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 697 if (optc == '?') 698 { 699 optind = last_optind; 700 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 701 } 702 703 if (ldemul_handle_option (optc)) 704 continue; 705 706 if (optc == -1) 707 break; 708 709 switch (optc) 710 { 711 case '?': 712 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 713 /* Fall through. */ 714 715 default: 716 einfo (_("%P%F: use the --help option for usage information\n")); 717 718 case 1: /* File name. */ 719 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 720 break; 721 722 case OPTION_IGNORE: 723 break; 724 case 'a': 725 /* For HP/UX compatibility. Actually -a shared should mean 726 ``use only shared libraries'' but, then, we don't 727 currently support shared libraries on HP/UX anyhow. */ 728 if (strcmp (optarg, "archive") == 0) 729 config.dynamic_link = FALSE; 730 else if (strcmp (optarg, "shared") == 0 731 || strcmp (optarg, "default") == 0) 732 config.dynamic_link = TRUE; 733 else 734 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 735 break; 736 case OPTION_ASSERT: 737 /* FIXME: We just ignore these, but we should handle them. */ 738 if (strcmp (optarg, "definitions") == 0) 739 ; 740 else if (strcmp (optarg, "nodefinitions") == 0) 741 ; 742 else if (strcmp (optarg, "nosymbolic") == 0) 743 ; 744 else if (strcmp (optarg, "pure-text") == 0) 745 ; 746 else 747 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 748 break; 749 case 'A': 750 ldfile_add_arch (optarg); 751 break; 752 case 'b': 753 lang_add_target (optarg); 754 break; 755 case 'c': 756 ldfile_open_command_file (optarg); 757 parser_input = input_mri_script; 758 yyparse (); 759 break; 760 case OPTION_CALL_SHARED: 761 config.dynamic_link = TRUE; 762 break; 763 case OPTION_NON_SHARED: 764 config.dynamic_link = FALSE; 765 break; 766 case OPTION_CREF: 767 command_line.cref = TRUE; 768 link_info.notice_all = TRUE; 769 break; 770 case 'd': 771 command_line.force_common_definition = TRUE; 772 break; 773 case OPTION_DEFSYM: 774 lex_string = optarg; 775 lex_redirect (optarg); 776 parser_input = input_defsym; 777 parsing_defsym = 1; 778 yyparse (); 779 parsing_defsym = 0; 780 lex_string = NULL; 781 break; 782 case OPTION_DEMANGLE: 783 demangling = TRUE; 784 if (optarg != NULL) 785 { 786 enum demangling_styles style; 787 788 style = cplus_demangle_name_to_style (optarg); 789 if (style == unknown_demangling) 790 einfo (_("%F%P: unknown demangling style `%s'"), 791 optarg); 792 793 cplus_demangle_set_style (style); 794 } 795 break; 796 case 'I': /* Used on Solaris. */ 797 case OPTION_DYNAMIC_LINKER: 798 command_line.interpreter = optarg; 799 break; 800 case OPTION_SYSROOT: 801 /* Already handled in ldmain.c. */ 802 break; 803 case OPTION_EB: 804 command_line.endian = ENDIAN_BIG; 805 break; 806 case OPTION_EL: 807 command_line.endian = ENDIAN_LITTLE; 808 break; 809 case OPTION_EMBEDDED_RELOCS: 810 command_line.embedded_relocs = TRUE; 811 break; 812 case OPTION_EXPORT_DYNAMIC: 813 case 'E': /* HP/UX compatibility. */ 814 link_info.export_dynamic = TRUE; 815 break; 816 case 'e': 817 lang_add_entry (optarg, TRUE); 818 break; 819 case 'f': 820 if (command_line.auxiliary_filters == NULL) 821 { 822 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 823 command_line.auxiliary_filters[0] = optarg; 824 command_line.auxiliary_filters[1] = NULL; 825 } 826 else 827 { 828 int c; 829 char **p; 830 831 c = 0; 832 for (p = command_line.auxiliary_filters; *p != NULL; p++) 833 ++c; 834 command_line.auxiliary_filters 835 = xrealloc (command_line.auxiliary_filters, 836 (c + 2) * sizeof (char *)); 837 command_line.auxiliary_filters[c] = optarg; 838 command_line.auxiliary_filters[c + 1] = NULL; 839 } 840 break; 841 case 'F': 842 command_line.filter_shlib = optarg; 843 break; 844 case OPTION_FORCE_EXE_SUFFIX: 845 command_line.force_exe_suffix = TRUE; 846 break; 847 case 'G': 848 { 849 char *end; 850 g_switch_value = strtoul (optarg, &end, 0); 851 if (*end) 852 einfo (_("%P%F: invalid number `%s'\n"), optarg); 853 } 854 break; 855 case 'g': 856 /* Ignore. */ 857 break; 858 case OPTION_GC_SECTIONS: 859 link_info.gc_sections = TRUE; 860 break; 861 case OPTION_PRINT_GC_SECTIONS: 862 link_info.print_gc_sections = TRUE; 863 break; 864 case OPTION_HELP: 865 help (); 866 xexit (0); 867 break; 868 case 'L': 869 ldfile_add_library_path (optarg, TRUE); 870 break; 871 case 'l': 872 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 873 break; 874 case 'M': 875 config.map_filename = "-"; 876 break; 877 case 'm': 878 /* Ignore. Was handled in a pre-parse. */ 879 break; 880 case OPTION_MAP: 881 config.map_filename = optarg; 882 break; 883 case 'N': 884 config.text_read_only = FALSE; 885 config.magic_demand_paged = FALSE; 886 config.dynamic_link = FALSE; 887 break; 888 case OPTION_NO_OMAGIC: 889 config.text_read_only = TRUE; 890 config.magic_demand_paged = TRUE; 891 /* NB/ Does not set dynamic_link to TRUE. 892 Use --call-shared or -Bdynamic for this. */ 893 break; 894 case 'n': 895 config.magic_demand_paged = FALSE; 896 config.dynamic_link = FALSE; 897 break; 898 case OPTION_NO_DEFINE_COMMON: 899 command_line.inhibit_common_definition = TRUE; 900 break; 901 case OPTION_NO_DEMANGLE: 902 demangling = FALSE; 903 break; 904 case OPTION_NO_GC_SECTIONS: 905 link_info.gc_sections = FALSE; 906 break; 907 case OPTION_NO_PRINT_GC_SECTIONS: 908 link_info.print_gc_sections = FALSE; 909 break; 910 case OPTION_NO_KEEP_MEMORY: 911 link_info.keep_memory = FALSE; 912 break; 913 case OPTION_NO_UNDEFINED: 914 link_info.unresolved_syms_in_objects 915 = how_to_report_unresolved_symbols; 916 break; 917 case OPTION_ALLOW_SHLIB_UNDEFINED: 918 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 919 break; 920 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 921 link_info.unresolved_syms_in_shared_libs 922 = how_to_report_unresolved_symbols; 923 break; 924 case OPTION_UNRESOLVED_SYMBOLS: 925 if (strcmp (optarg, "ignore-all") == 0) 926 { 927 link_info.unresolved_syms_in_objects = RM_IGNORE; 928 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 929 } 930 else if (strcmp (optarg, "report-all") == 0) 931 { 932 link_info.unresolved_syms_in_objects 933 = how_to_report_unresolved_symbols; 934 link_info.unresolved_syms_in_shared_libs 935 = how_to_report_unresolved_symbols; 936 } 937 else if (strcmp (optarg, "ignore-in-object-files") == 0) 938 { 939 link_info.unresolved_syms_in_objects = RM_IGNORE; 940 link_info.unresolved_syms_in_shared_libs 941 = how_to_report_unresolved_symbols; 942 } 943 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 944 { 945 link_info.unresolved_syms_in_objects 946 = how_to_report_unresolved_symbols; 947 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 948 } 949 else 950 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 951 break; 952 case OPTION_WARN_UNRESOLVED_SYMBOLS: 953 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 954 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 955 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 956 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 957 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 958 break; 959 960 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 961 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 962 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 963 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 964 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 965 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 966 break; 967 case OPTION_ALLOW_MULTIPLE_DEFINITION: 968 link_info.allow_multiple_definition = TRUE; 969 break; 970 case OPTION_NO_UNDEFINED_VERSION: 971 link_info.allow_undefined_version = FALSE; 972 break; 973 case OPTION_DEFAULT_SYMVER: 974 link_info.create_default_symver = TRUE; 975 break; 976 case OPTION_DEFAULT_IMPORTED_SYMVER: 977 link_info.default_imported_symver = TRUE; 978 break; 979 case OPTION_NO_WARN_MISMATCH: 980 command_line.warn_mismatch = FALSE; 981 break; 982 case OPTION_NO_WARN_SEARCH_MISMATCH: 983 command_line.warn_search_mismatch = FALSE; 984 break; 985 case OPTION_NOINHIBIT_EXEC: 986 force_make_executable = TRUE; 987 break; 988 case OPTION_NOSTDLIB: 989 config.only_cmd_line_lib_dirs = TRUE; 990 break; 991 case OPTION_NO_WHOLE_ARCHIVE: 992 whole_archive = FALSE; 993 break; 994 case 'O': 995 /* FIXME "-O<non-digits> <value>" used to set the address of 996 section <non-digits>. Was this for compatibility with 997 something, or can we create a new option to do that 998 (with a syntax similar to -defsym)? 999 getopt can't handle two args to an option without kludges. */ 1000 1001 /* Enable optimizations of output files. */ 1002 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1003 break; 1004 case 'o': 1005 lang_add_output (optarg, 0); 1006 break; 1007 case OPTION_OFORMAT: 1008 lang_add_output_format (optarg, NULL, NULL, 0); 1009 break; 1010 case 'q': 1011 link_info.emitrelocations = TRUE; 1012 break; 1013 case 'i': 1014 case 'r': 1015 if (optind == last_optind) 1016 /* This can happen if the user put "-rpath,a" on the command 1017 line. (Or something similar. The comma is important). 1018 Getopt becomes confused and thinks that this is a -r option 1019 but it cannot parse the text after the -r so it refuses to 1020 increment the optind counter. Detect this case and issue 1021 an error message here. We cannot just make this a warning, 1022 increment optind, and continue because getopt is too confused 1023 and will seg-fault the next time around. */ 1024 einfo(_("%P%F: bad -rpath option\n")); 1025 1026 link_info.relocatable = TRUE; 1027 config.build_constructors = FALSE; 1028 config.magic_demand_paged = FALSE; 1029 config.text_read_only = FALSE; 1030 config.dynamic_link = FALSE; 1031 break; 1032 case 'R': 1033 /* The GNU linker traditionally uses -R to mean to include 1034 only the symbols from a file. The Solaris linker uses -R 1035 to set the path used by the runtime linker to find 1036 libraries. This is the GNU linker -rpath argument. We 1037 try to support both simultaneously by checking the file 1038 named. If it is a directory, rather than a regular file, 1039 we assume -rpath was meant. */ 1040 { 1041 struct stat s; 1042 1043 if (stat (optarg, &s) >= 0 1044 && ! S_ISDIR (s.st_mode)) 1045 { 1046 lang_add_input_file (optarg, 1047 lang_input_file_is_symbols_only_enum, 1048 NULL); 1049 break; 1050 } 1051 } 1052 /* Fall through. */ 1053 case OPTION_RPATH: 1054 if (command_line.rpath == NULL) 1055 command_line.rpath = xstrdup (optarg); 1056 else 1057 { 1058 size_t rpath_len = strlen (command_line.rpath); 1059 size_t optarg_len = strlen (optarg); 1060 char *buf; 1061 char *cp = command_line.rpath; 1062 1063 /* First see whether OPTARG is already in the path. */ 1064 do 1065 { 1066 if (strncmp (optarg, cp, optarg_len) == 0 1067 && (cp[optarg_len] == 0 1068 || cp[optarg_len] == config.rpath_separator)) 1069 /* We found it. */ 1070 break; 1071 1072 /* Not yet found. */ 1073 cp = strchr (cp, config.rpath_separator); 1074 if (cp != NULL) 1075 ++cp; 1076 } 1077 while (cp != NULL); 1078 1079 if (cp == NULL) 1080 { 1081 buf = xmalloc (rpath_len + optarg_len + 2); 1082 sprintf (buf, "%s%c%s", command_line.rpath, 1083 config.rpath_separator, optarg); 1084 free (command_line.rpath); 1085 command_line.rpath = buf; 1086 } 1087 } 1088 break; 1089 case OPTION_RPATH_LINK: 1090 if (command_line.rpath_link == NULL) 1091 command_line.rpath_link = xstrdup (optarg); 1092 else 1093 { 1094 char *buf; 1095 1096 buf = xmalloc (strlen (command_line.rpath_link) 1097 + strlen (optarg) 1098 + 2); 1099 sprintf (buf, "%s%c%s", command_line.rpath_link, 1100 config.rpath_separator, optarg); 1101 free (command_line.rpath_link); 1102 command_line.rpath_link = buf; 1103 } 1104 break; 1105 case OPTION_RELAX: 1106 command_line.relax = TRUE; 1107 break; 1108 case OPTION_RETAIN_SYMBOLS_FILE: 1109 add_keepsyms_file (optarg); 1110 break; 1111 case 'S': 1112 link_info.strip = strip_debugger; 1113 break; 1114 case 's': 1115 link_info.strip = strip_all; 1116 break; 1117 case OPTION_STRIP_DISCARDED: 1118 link_info.strip_discarded = TRUE; 1119 break; 1120 case OPTION_NO_STRIP_DISCARDED: 1121 link_info.strip_discarded = FALSE; 1122 break; 1123 case OPTION_SHARED: 1124 if (config.has_shared) 1125 { 1126 link_info.shared = TRUE; 1127 /* When creating a shared library, the default 1128 behaviour is to ignore any unresolved references. */ 1129 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1130 link_info.unresolved_syms_in_objects = RM_IGNORE; 1131 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1132 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1133 } 1134 else 1135 einfo (_("%P%F: -shared not supported\n")); 1136 break; 1137 case OPTION_PIE: 1138 if (config.has_shared) 1139 { 1140 link_info.shared = TRUE; 1141 link_info.pie = TRUE; 1142 } 1143 else 1144 einfo (_("%P%F: -pie not supported\n")); 1145 break; 1146 case 'h': /* Used on Solaris. */ 1147 case OPTION_SONAME: 1148 command_line.soname = optarg; 1149 break; 1150 case OPTION_SORT_COMMON: 1151 if (optarg == NULL 1152 || strcmp (optarg, N_("descending")) == 0) 1153 config.sort_common = sort_descending; 1154 else if (strcmp (optarg, N_("ascending")) == 0) 1155 config.sort_common = sort_ascending; 1156 else 1157 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1158 optarg); 1159 break; 1160 case OPTION_SORT_SECTION: 1161 if (strcmp (optarg, N_("name")) == 0) 1162 sort_section = by_name; 1163 else if (strcmp (optarg, N_("alignment")) == 0) 1164 sort_section = by_alignment; 1165 else 1166 einfo (_("%P%F: invalid section sorting option: %s\n"), 1167 optarg); 1168 break; 1169 case OPTION_STATS: 1170 config.stats = TRUE; 1171 break; 1172 case OPTION_SYMBOLIC: 1173 command_line.symbolic = symbolic; 1174 break; 1175 case OPTION_SYMBOLIC_FUNCTIONS: 1176 command_line.symbolic = symbolic_functions; 1177 break; 1178 case 't': 1179 trace_files = TRUE; 1180 break; 1181 case 'T': 1182 previous_script_handle = saved_script_handle; 1183 ldfile_open_command_file (optarg); 1184 parser_input = input_script; 1185 yyparse (); 1186 previous_script_handle = NULL; 1187 break; 1188 case OPTION_DEFAULT_SCRIPT: 1189 command_line.default_script = optarg; 1190 break; 1191 case OPTION_SECTION_START: 1192 { 1193 char *optarg2; 1194 char *sec_name; 1195 int len; 1196 1197 /* Check for <something>=<somthing>... */ 1198 optarg2 = strchr (optarg, '='); 1199 if (optarg2 == NULL) 1200 einfo (_("%P%F: invalid argument to option" 1201 " \"--section-start\"\n")); 1202 1203 optarg2++; 1204 1205 /* So far so good. Are all the args present? */ 1206 if ((*optarg == '\0') || (*optarg2 == '\0')) 1207 einfo (_("%P%F: missing argument(s) to option" 1208 " \"--section-start\"\n")); 1209 1210 /* We must copy the section name as set_section_start 1211 doesn't do it for us. */ 1212 len = optarg2 - optarg; 1213 sec_name = xmalloc (len); 1214 memcpy (sec_name, optarg, len - 1); 1215 sec_name[len - 1] = 0; 1216 1217 /* Then set it... */ 1218 set_section_start (sec_name, optarg2); 1219 } 1220 break; 1221 case OPTION_TARGET_HELP: 1222 /* Mention any target specific options. */ 1223 ldemul_list_emulation_options (stdout); 1224 exit (0); 1225 case OPTION_TBSS: 1226 set_segment_start (".bss", optarg); 1227 break; 1228 case OPTION_TDATA: 1229 set_segment_start (".data", optarg); 1230 break; 1231 case OPTION_TTEXT: 1232 set_segment_start (".text", optarg); 1233 break; 1234 case OPTION_TRADITIONAL_FORMAT: 1235 link_info.traditional_format = TRUE; 1236 break; 1237 case OPTION_TASK_LINK: 1238 link_info.task_link = TRUE; 1239 /* Fall through - do an implied -r option. */ 1240 case OPTION_UR: 1241 link_info.relocatable = TRUE; 1242 config.build_constructors = TRUE; 1243 config.magic_demand_paged = FALSE; 1244 config.text_read_only = FALSE; 1245 config.dynamic_link = FALSE; 1246 break; 1247 case 'u': 1248 ldlang_add_undef (optarg); 1249 break; 1250 case OPTION_UNIQUE: 1251 if (optarg != NULL) 1252 lang_add_unique (optarg); 1253 else 1254 config.unique_orphan_sections = TRUE; 1255 break; 1256 case OPTION_VERBOSE: 1257 ldversion (1); 1258 version_printed = TRUE; 1259 trace_file_tries = TRUE; 1260 overflow_cutoff_limit = -2; 1261 break; 1262 case 'v': 1263 ldversion (0); 1264 version_printed = TRUE; 1265 break; 1266 case 'V': 1267 ldversion (1); 1268 version_printed = TRUE; 1269 break; 1270 case OPTION_VERSION: 1271 ldversion (2); 1272 xexit (0); 1273 break; 1274 case OPTION_VERSION_SCRIPT: 1275 /* This option indicates a small script that only specifies 1276 version information. Read it, but don't assume that 1277 we've seen a linker script. */ 1278 { 1279 FILE *hold_script_handle; 1280 1281 hold_script_handle = saved_script_handle; 1282 ldfile_open_command_file (optarg); 1283 saved_script_handle = hold_script_handle; 1284 parser_input = input_version_script; 1285 yyparse (); 1286 } 1287 break; 1288 case OPTION_VERSION_EXPORTS_SECTION: 1289 /* This option records a version symbol to be applied to the 1290 symbols listed for export to be found in the object files 1291 .exports sections. */ 1292 command_line.version_exports_section = optarg; 1293 break; 1294 case OPTION_DYNAMIC_LIST_DATA: 1295 command_line.dynamic_list = dynamic_list_data; 1296 if (command_line.symbolic == symbolic) 1297 command_line.symbolic = symbolic_unset; 1298 break; 1299 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1300 lang_append_dynamic_list_cpp_typeinfo (); 1301 if (command_line.dynamic_list != dynamic_list_data) 1302 command_line.dynamic_list = dynamic_list; 1303 if (command_line.symbolic == symbolic) 1304 command_line.symbolic = symbolic_unset; 1305 break; 1306 case OPTION_DYNAMIC_LIST_CPP_NEW: 1307 lang_append_dynamic_list_cpp_new (); 1308 if (command_line.dynamic_list != dynamic_list_data) 1309 command_line.dynamic_list = dynamic_list; 1310 if (command_line.symbolic == symbolic) 1311 command_line.symbolic = symbolic_unset; 1312 break; 1313 case OPTION_DYNAMIC_LIST: 1314 /* This option indicates a small script that only specifies 1315 a dynamic list. Read it, but don't assume that we've 1316 seen a linker script. */ 1317 { 1318 FILE *hold_script_handle; 1319 1320 hold_script_handle = saved_script_handle; 1321 ldfile_open_command_file (optarg); 1322 saved_script_handle = hold_script_handle; 1323 parser_input = input_dynamic_list; 1324 yyparse (); 1325 } 1326 if (command_line.dynamic_list != dynamic_list_data) 1327 command_line.dynamic_list = dynamic_list; 1328 if (command_line.symbolic == symbolic) 1329 command_line.symbolic = symbolic_unset; 1330 break; 1331 case OPTION_WARN_COMMON: 1332 config.warn_common = TRUE; 1333 break; 1334 case OPTION_WARN_CONSTRUCTORS: 1335 config.warn_constructors = TRUE; 1336 break; 1337 case OPTION_WARN_FATAL: 1338 config.fatal_warnings = TRUE; 1339 break; 1340 case OPTION_NO_WARN_FATAL: 1341 config.fatal_warnings = FALSE; 1342 break; 1343 case OPTION_WARN_MULTIPLE_GP: 1344 config.warn_multiple_gp = TRUE; 1345 break; 1346 case OPTION_WARN_ONCE: 1347 config.warn_once = TRUE; 1348 break; 1349 case OPTION_WARN_SECTION_ALIGN: 1350 config.warn_section_align = TRUE; 1351 break; 1352 case OPTION_WARN_SHARED_TEXTREL: 1353 link_info.warn_shared_textrel = TRUE; 1354 break; 1355 case OPTION_WHOLE_ARCHIVE: 1356 whole_archive = TRUE; 1357 break; 1358 case OPTION_ADD_NEEDED: 1359 add_needed = TRUE; 1360 break; 1361 case OPTION_NO_ADD_NEEDED: 1362 add_needed = FALSE; 1363 break; 1364 case OPTION_AS_NEEDED: 1365 as_needed = TRUE; 1366 break; 1367 case OPTION_NO_AS_NEEDED: 1368 as_needed = FALSE; 1369 break; 1370 case OPTION_WRAP: 1371 add_wrap (optarg); 1372 break; 1373 case OPTION_DISCARD_NONE: 1374 link_info.discard = discard_none; 1375 break; 1376 case 'X': 1377 link_info.discard = discard_l; 1378 break; 1379 case 'x': 1380 link_info.discard = discard_all; 1381 break; 1382 case 'Y': 1383 if (CONST_STRNEQ (optarg, "P,")) 1384 optarg += 2; 1385 if (default_dirlist != NULL) 1386 free (default_dirlist); 1387 default_dirlist = xstrdup (optarg); 1388 break; 1389 case 'y': 1390 add_ysym (optarg); 1391 break; 1392 case OPTION_SPARE_DYNAMIC_TAGS: 1393 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1394 break; 1395 case OPTION_SPLIT_BY_RELOC: 1396 if (optarg != NULL) 1397 config.split_by_reloc = strtoul (optarg, NULL, 0); 1398 else 1399 config.split_by_reloc = 32768; 1400 break; 1401 case OPTION_SPLIT_BY_FILE: 1402 if (optarg != NULL) 1403 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1404 else 1405 config.split_by_file = 1; 1406 break; 1407 case OPTION_CHECK_SECTIONS: 1408 command_line.check_section_addresses = TRUE; 1409 break; 1410 case OPTION_NO_CHECK_SECTIONS: 1411 command_line.check_section_addresses = FALSE; 1412 break; 1413 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1414 command_line.accept_unknown_input_arch = TRUE; 1415 break; 1416 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1417 command_line.accept_unknown_input_arch = FALSE; 1418 break; 1419 case '(': 1420 if (ingroup) 1421 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1422 1423 lang_enter_group (); 1424 ingroup = 1; 1425 break; 1426 case ')': 1427 if (! ingroup) 1428 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1429 1430 lang_leave_group (); 1431 ingroup = 0; 1432 break; 1433 1434 case OPTION_INIT: 1435 link_info.init_function = optarg; 1436 break; 1437 1438 case OPTION_FINI: 1439 link_info.fini_function = optarg; 1440 break; 1441 1442 case OPTION_REDUCE_MEMORY_OVERHEADS: 1443 link_info.reduce_memory_overheads = TRUE; 1444 if (config.hash_table_size == 0) 1445 config.hash_table_size = 1021; 1446 break; 1447 1448 case OPTION_HASH_SIZE: 1449 { 1450 bfd_size_type new_size; 1451 1452 new_size = strtoul (optarg, NULL, 0); 1453 if (new_size) 1454 config.hash_table_size = new_size; 1455 else 1456 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1457 } 1458 break; 1459 } 1460 } 1461 1462 if (ingroup) 1463 lang_leave_group (); 1464 1465 if (default_dirlist != NULL) 1466 { 1467 set_default_dirlist (default_dirlist); 1468 free (default_dirlist); 1469 } 1470 1471 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1472 /* FIXME: Should we allow emulations a chance to set this ? */ 1473 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1474 1475 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1476 /* FIXME: Should we allow emulations a chance to set this ? */ 1477 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1478 } 1479 1480 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1481 library search path. */ 1482 1483 static void 1484 set_default_dirlist (char *dirlist_ptr) 1485 { 1486 char *p; 1487 1488 while (1) 1489 { 1490 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1491 if (p != NULL) 1492 *p = '\0'; 1493 if (*dirlist_ptr != '\0') 1494 ldfile_add_library_path (dirlist_ptr, TRUE); 1495 if (p == NULL) 1496 break; 1497 dirlist_ptr = p + 1; 1498 } 1499 } 1500 1501 static void 1502 set_section_start (char *sect, char *valstr) 1503 { 1504 const char *end; 1505 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1506 if (*end) 1507 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1508 lang_section_start (sect, exp_intop (val), NULL); 1509 } 1510 1511 static void 1512 set_segment_start (const char *section, char *valstr) 1513 { 1514 const char *name; 1515 const char *end; 1516 segment_type *seg; 1517 1518 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1519 if (*end) 1520 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1521 /* If we already have an entry for this segment, update the existing 1522 value. */ 1523 name = section + 1; 1524 for (seg = segments; seg; seg = seg->next) 1525 if (strcmp (seg->name, name) == 0) 1526 { 1527 seg->value = val; 1528 return; 1529 } 1530 /* There was no existing value so we must create a new segment 1531 entry. */ 1532 seg = stat_alloc (sizeof (*seg)); 1533 seg->name = name; 1534 seg->value = val; 1535 seg->used = FALSE; 1536 /* Add it to the linked list of segments. */ 1537 seg->next = segments; 1538 segments = seg; 1539 /* Historically, -Ttext and friends set the base address of a 1540 particular section. For backwards compatibility, we still do 1541 that. If a SEGMENT_START directive is seen, the section address 1542 assignment will be disabled. */ 1543 lang_section_start (section, exp_intop (val), seg); 1544 } 1545 1546 1547 /* Print help messages for the options. */ 1549 1550 static void 1551 help (void) 1552 { 1553 unsigned i; 1554 const char **targets, **pp; 1555 int len; 1556 1557 printf (_("Usage: %s [options] file...\n"), program_name); 1558 1559 printf (_("Options:\n")); 1560 for (i = 0; i < OPTION_COUNT; i++) 1561 { 1562 if (ld_options[i].doc != NULL) 1563 { 1564 bfd_boolean comma; 1565 unsigned j; 1566 1567 printf (" "); 1568 1569 comma = FALSE; 1570 len = 2; 1571 1572 j = i; 1573 do 1574 { 1575 if (ld_options[j].shortopt != '\0' 1576 && ld_options[j].control != NO_HELP) 1577 { 1578 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1579 len += (comma ? 2 : 0) + 2; 1580 if (ld_options[j].arg != NULL) 1581 { 1582 if (ld_options[j].opt.has_arg != optional_argument) 1583 { 1584 printf (" "); 1585 ++len; 1586 } 1587 printf ("%s", _(ld_options[j].arg)); 1588 len += strlen (_(ld_options[j].arg)); 1589 } 1590 comma = TRUE; 1591 } 1592 ++j; 1593 } 1594 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1595 1596 j = i; 1597 do 1598 { 1599 if (ld_options[j].opt.name != NULL 1600 && ld_options[j].control != NO_HELP) 1601 { 1602 int two_dashes = 1603 (ld_options[j].control == TWO_DASHES 1604 || ld_options[j].control == EXACTLY_TWO_DASHES); 1605 1606 printf ("%s-%s%s", 1607 comma ? ", " : "", 1608 two_dashes ? "-" : "", 1609 ld_options[j].opt.name); 1610 len += ((comma ? 2 : 0) 1611 + 1 1612 + (two_dashes ? 1 : 0) 1613 + strlen (ld_options[j].opt.name)); 1614 if (ld_options[j].arg != NULL) 1615 { 1616 printf (" %s", _(ld_options[j].arg)); 1617 len += 1 + strlen (_(ld_options[j].arg)); 1618 } 1619 comma = TRUE; 1620 } 1621 ++j; 1622 } 1623 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1624 1625 if (len >= 30) 1626 { 1627 printf ("\n"); 1628 len = 0; 1629 } 1630 1631 for (; len < 30; len++) 1632 putchar (' '); 1633 1634 printf ("%s\n", _(ld_options[i].doc)); 1635 } 1636 } 1637 printf (_(" @FILE")); 1638 for (len = strlen (" @FILE"); len < 30; len++) 1639 putchar (' '); 1640 printf (_("Read options from FILE\n")); 1641 1642 /* Note: Various tools (such as libtool) depend upon the 1643 format of the listings below - do not change them. */ 1644 /* xgettext:c-format */ 1645 printf (_("%s: supported targets:"), program_name); 1646 targets = bfd_target_list (); 1647 for (pp = targets; *pp != NULL; pp++) 1648 printf (" %s", *pp); 1649 free (targets); 1650 printf ("\n"); 1651 1652 /* xgettext:c-format */ 1653 printf (_("%s: supported emulations: "), program_name); 1654 ldemul_list_emulations (stdout); 1655 printf ("\n"); 1656 1657 /* xgettext:c-format */ 1658 printf (_("%s: emulation specific options:\n"), program_name); 1659 ldemul_list_emulation_options (stdout); 1660 printf ("\n"); 1661 1662 if (REPORT_BUGS_TO[0]) 1663 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1664 } 1665
Indexes created Sun Mar 01 05:31:48 UTC 2026