lexsup.c revision 306136
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 GLD, the Gnu Linker. 7 8 GLD is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GLD is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GLD; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23#include "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 57static void set_default_dirlist (char *); 58static void set_section_start (char *, char *); 59static void set_segment_start (const char *, char *); 60static void help (void); 61 62/* Non-zero if we are processing a --defsym from the command line. */ 63int 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. */ 67enum 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_NO_WARN_FATAL, 88 OPTION_NOINHIBIT_EXEC, 89 OPTION_NON_SHARED, 90 OPTION_NO_WHOLE_ARCHIVE, 91 OPTION_OFORMAT, 92 OPTION_RELAX, 93 OPTION_RETAIN_SYMBOLS_FILE, 94 OPTION_RPATH, 95 OPTION_RPATH_LINK, 96 OPTION_SHARED, 97 OPTION_SONAME, 98 OPTION_SORT_COMMON, 99 OPTION_SORT_SECTION, 100 OPTION_STATS, 101 OPTION_SYMBOLIC, 102 OPTION_SYMBOLIC_FUNCTIONS, 103 OPTION_TASK_LINK, 104 OPTION_TBSS, 105 OPTION_TDATA, 106 OPTION_TTEXT, 107 OPTION_TRADITIONAL_FORMAT, 108 OPTION_UR, 109 OPTION_VERBOSE, 110 OPTION_VERSION, 111 OPTION_VERSION_SCRIPT, 112 OPTION_VERSION_EXPORTS_SECTION, 113 OPTION_DYNAMIC_LIST, 114 OPTION_DYNAMIC_LIST_CPP_NEW, 115 OPTION_DYNAMIC_LIST_CPP_TYPEINFO, 116 OPTION_DYNAMIC_LIST_DATA, 117 OPTION_WARN_COMMON, 118 OPTION_WARN_CONSTRUCTORS, 119 OPTION_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 172struct 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 203static 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 "\t\t\t\tfollowing dynamic libs"), TWO_DASHES }, 332 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED}, 333 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n" 334 "\t\t\t\tin following dynamic libs"), TWO_DASHES }, 335 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 336 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 337 TWO_DASHES }, 338 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 339 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), 340 TWO_DASHES }, 341 { {"assert", required_argument, NULL, OPTION_ASSERT}, 342 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 343 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 344 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 345 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 346 '\0', NULL, NULL, ONE_DASH }, 347 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 348 '\0', NULL, NULL, ONE_DASH }, 349 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 350 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 351 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 352 '\0', NULL, NULL, ONE_DASH }, 353 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 354 '\0', NULL, NULL, ONE_DASH }, 355 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 356 '\0', NULL, NULL, ONE_DASH }, 357 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 358 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 359 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 360 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 361 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 362 '\0', NULL, N_("Check section addresses for overlaps (default)"), 363 TWO_DASHES }, 364 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 365 '\0', NULL, N_("Do not check section addresses for overlaps"), 366 TWO_DASHES }, 367 { {"cref", no_argument, NULL, OPTION_CREF}, 368 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 369 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 370 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 371 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 372 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 373 TWO_DASHES }, 374 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 375 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 376 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 377 '\0', NULL, N_("Treat warnings as errors"), 378 TWO_DASHES }, 379 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 380 '\0', NULL, N_("Don't treat warnings as errors"), 381 TWO_DASHES }, 382 { {"fini", required_argument, NULL, OPTION_FINI}, 383 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 384 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 385 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 386 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 387 '\0', NULL, N_("Remove unused sections (on some targets)"), 388 TWO_DASHES }, 389 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 390 '\0', NULL, N_("Don't remove unused sections (default)"), 391 TWO_DASHES }, 392 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 393 '\0', NULL, N_("List removed unused sections on stderr"), 394 TWO_DASHES }, 395 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 396 '\0', NULL, N_("Do not list removed unused sections"), 397 TWO_DASHES }, 398 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 399 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 400 TWO_DASHES }, 401 { {"help", no_argument, NULL, OPTION_HELP}, 402 '\0', NULL, N_("Print option help"), TWO_DASHES }, 403 { {"init", required_argument, NULL, OPTION_INIT}, 404 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 405 { {"Map", required_argument, NULL, OPTION_MAP}, 406 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 407 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 408 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 409 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 410 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 411 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 412 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 413 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 414 '\0', NULL, N_("Do not allow unresolved references in object files"), 415 TWO_DASHES }, 416 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 417 '\0', NULL, N_("Allow unresolved references in shared libaries"), 418 TWO_DASHES }, 419 { {"no-allow-shlib-undefined", no_argument, NULL, 420 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 421 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 422 TWO_DASHES }, 423 { {"allow-multiple-definition", no_argument, NULL, 424 OPTION_ALLOW_MULTIPLE_DEFINITION}, 425 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 426 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 427 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 428 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 429 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 430 { {"default-imported-symver", no_argument, NULL, 431 OPTION_DEFAULT_IMPORTED_SYMVER}, 432 '\0', NULL, N_("Create default symbol version for imported symbols"), 433 TWO_DASHES }, 434 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 435 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 436 { {"no-warn-search-mismatch", no_argument, NULL, 437 OPTION_NO_WARN_SEARCH_MISMATCH}, 438 '\0', NULL, N_("Don't warn on finding an incompatible library"), 439 TWO_DASHES}, 440 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 441 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 442 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 443 '\0', NULL, N_("Create an output file even if errors occur"), 444 TWO_DASHES }, 445 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 446 '\0', NULL, NULL, NO_HELP }, 447 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 448 '\0', NULL, N_("Only use library directories specified on\n" 449 "\t\t\t\tthe command line"), ONE_DASH }, 450 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 451 '\0', N_("TARGET"), N_("Specify target of output file"), 452 EXACTLY_TWO_DASHES }, 453 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 454 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 455 { {"reduce-memory-overheads", no_argument, NULL, 456 OPTION_REDUCE_MEMORY_OVERHEADS}, 457 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 458 TWO_DASHES }, 459 { {"relax", no_argument, NULL, OPTION_RELAX}, 460 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 461 { {"retain-symbols-file", required_argument, NULL, 462 OPTION_RETAIN_SYMBOLS_FILE}, 463 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 464 { {"rpath", required_argument, NULL, OPTION_RPATH}, 465 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 466 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 467 '\0', N_("PATH"), N_("Set link time shared library search path"), 468 ONE_DASH }, 469 { {"shared", no_argument, NULL, OPTION_SHARED}, 470 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 471 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 472 '\0', NULL, NULL, ONE_DASH }, 473 { {"pie", no_argument, NULL, OPTION_PIE}, 474 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 475 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 476 '\0', NULL, NULL, TWO_DASHES }, 477 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, 478 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, 479 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 480 '\0', NULL, NULL, NO_HELP }, 481 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 482 '\0', N_("name|alignment"), 483 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 484 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 485 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 486 TWO_DASHES }, 487 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 488 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 489 TWO_DASHES }, 490 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 491 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 492 TWO_DASHES }, 493 { {"stats", no_argument, NULL, OPTION_STATS}, 494 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 495 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 496 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 497 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 498 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 499 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 500 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 501 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 502 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 503 TWO_DASHES }, 504 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 505 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 506 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 507 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 508 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 509 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 510 { {"unresolved-symbols=<method>", required_argument, NULL, 511 OPTION_UNRESOLVED_SYMBOLS}, 512 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 513 "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n" 514 "\t\t\t\tignore-in-shared-libs"), TWO_DASHES }, 515 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 516 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 517 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 518 '\0', NULL, NULL, NO_HELP }, 519 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 520 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 521 { {"version-exports-section", required_argument, NULL, 522 OPTION_VERSION_EXPORTS_SECTION }, 523 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 524 "\t\t\t\tSYMBOL as the version."), TWO_DASHES }, 525 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 526 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 527 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 528 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 529 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 530 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 531 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 532 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 533 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 534 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 535 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 536 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 537 TWO_DASHES }, 538 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 539 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 540 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 541 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 542 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 543 '\0', NULL, N_("Warn if start of section changes due to alignment"), 544 TWO_DASHES }, 545 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 546 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 547 TWO_DASHES }, 548 { {"warn-unresolved-symbols", no_argument, NULL, 549 OPTION_WARN_UNRESOLVED_SYMBOLS}, 550 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 551 { {"error-unresolved-symbols", no_argument, NULL, 552 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 553 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 554 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 555 '\0', NULL, N_("Include all objects from following archives"), 556 TWO_DASHES }, 557 { {"wrap", required_argument, NULL, OPTION_WRAP}, 558 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 559}; 560 561#define OPTION_COUNT ARRAY_SIZE (ld_options) 562 563void 564parse_args (unsigned argc, char **argv) 565{ 566 unsigned i; 567 int is, il, irl; 568 int ingroup = 0; 569 char *default_dirlist = NULL; 570 char *shortopts; 571 struct option *longopts; 572 struct option *really_longopts; 573 int last_optind; 574 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 575 int no_fatal_warnings = FALSE; 576 577 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 578 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 579 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 580 581 /* Starting the short option string with '-' is for programs that 582 expect options and other ARGV-elements in any order and that care about 583 the ordering of the two. We describe each non-option ARGV-element 584 as if it were the argument of an option with character code 1. */ 585 shortopts[0] = '-'; 586 is = 1; 587 il = 0; 588 irl = 0; 589 for (i = 0; i < OPTION_COUNT; i++) 590 { 591 if (ld_options[i].shortopt != '\0') 592 { 593 shortopts[is] = ld_options[i].shortopt; 594 ++is; 595 if (ld_options[i].opt.has_arg == required_argument 596 || ld_options[i].opt.has_arg == optional_argument) 597 { 598 shortopts[is] = ':'; 599 ++is; 600 if (ld_options[i].opt.has_arg == optional_argument) 601 { 602 shortopts[is] = ':'; 603 ++is; 604 } 605 } 606 } 607 if (ld_options[i].opt.name != NULL) 608 { 609 if (ld_options[i].control == EXACTLY_TWO_DASHES) 610 { 611 really_longopts[irl] = ld_options[i].opt; 612 ++irl; 613 } 614 else 615 { 616 longopts[il] = ld_options[i].opt; 617 ++il; 618 } 619 } 620 } 621 shortopts[is] = '\0'; 622 longopts[il].name = NULL; 623 really_longopts[irl].name = NULL; 624 625 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 626 627 /* The -G option is ambiguous on different platforms. Sometimes it 628 specifies the largest data size to put into the small data 629 section. Sometimes it is equivalent to --shared. Unfortunately, 630 the first form takes an argument, while the second does not. 631 632 We need to permit the --shared form because on some platforms, 633 such as Solaris, gcc -shared will pass -G to the linker. 634 635 To permit either usage, we look through the argument list. If we 636 find -G not followed by a number, we change it into --shared. 637 This will work for most normal cases. */ 638 for (i = 1; i < argc; i++) 639 if (strcmp (argv[i], "-G") == 0 640 && (i + 1 >= argc 641 || ! ISDIGIT (argv[i + 1][0]))) 642 argv[i] = (char *) "--shared"; 643 644 /* Because we permit long options to start with a single dash, and 645 we have a --library option, and the -l option is conventionally 646 used with an immediately following argument, we can have bad 647 results if somebody tries to use -l with a library whose name 648 happens to start with "ibrary", as in -li. We avoid problems by 649 simply turning -l into --library. This means that users will 650 have to use two dashes in order to use --library, which is OK 651 since that's how it is documented. 652 653 FIXME: It's possible that this problem can arise for other short 654 options as well, although the user does always have the recourse 655 of adding a space between the option and the argument. */ 656 for (i = 1; i < argc; i++) 657 { 658 if (argv[i][0] == '-' 659 && argv[i][1] == 'l' 660 && argv[i][2] != '\0') 661 { 662 char *n; 663 664 n = xmalloc (strlen (argv[i]) + 20); 665 sprintf (n, "--library=%s", argv[i] + 2); 666 argv[i] = n; 667 } 668 } 669 670 last_optind = -1; 671 while (1) 672 { 673 int longind; 674 int optc; 675 676 /* Using last_optind lets us avoid calling ldemul_parse_args 677 multiple times on a single option, which would lead to 678 confusion in the internal static variables maintained by 679 getopt. This could otherwise happen for an argument like 680 -nx, in which the -n is parsed as a single option, and we 681 loop around to pick up the -x. */ 682 if (optind != last_optind) 683 if (ldemul_parse_args (argc, argv)) 684 continue; 685 686 /* getopt_long_only is like getopt_long, but '-' as well as '--' 687 can indicate a long option. */ 688 opterr = 0; 689 last_optind = optind; 690 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 691 if (optc == '?') 692 { 693 optind = last_optind; 694 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 695 } 696 697 if (ldemul_handle_option (optc)) 698 continue; 699 700 if (optc == -1) 701 break; 702 703 switch (optc) 704 { 705 case '?': 706 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 707 /* Fall through. */ 708 709 default: 710 einfo (_("%P%F: use the --help option for usage information\n")); 711 712 case 1: /* File name. */ 713 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 714 break; 715 716 case OPTION_IGNORE: 717 break; 718 case 'a': 719 /* For HP/UX compatibility. Actually -a shared should mean 720 ``use only shared libraries'' but, then, we don't 721 currently support shared libraries on HP/UX anyhow. */ 722 if (strcmp (optarg, "archive") == 0) 723 config.dynamic_link = FALSE; 724 else if (strcmp (optarg, "shared") == 0 725 || strcmp (optarg, "default") == 0) 726 config.dynamic_link = TRUE; 727 else 728 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 729 break; 730 case OPTION_ASSERT: 731 /* FIXME: We just ignore these, but we should handle them. */ 732 if (strcmp (optarg, "definitions") == 0) 733 ; 734 else if (strcmp (optarg, "nodefinitions") == 0) 735 ; 736 else if (strcmp (optarg, "nosymbolic") == 0) 737 ; 738 else if (strcmp (optarg, "pure-text") == 0) 739 ; 740 else 741 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 742 break; 743 case 'A': 744 ldfile_add_arch (optarg); 745 break; 746 case 'b': 747 lang_add_target (optarg); 748 break; 749 case 'c': 750 ldfile_open_command_file (optarg); 751 parser_input = input_mri_script; 752 yyparse (); 753 break; 754 case OPTION_CALL_SHARED: 755 config.dynamic_link = TRUE; 756 break; 757 case OPTION_NON_SHARED: 758 config.dynamic_link = FALSE; 759 break; 760 case OPTION_CREF: 761 command_line.cref = TRUE; 762 link_info.notice_all = TRUE; 763 break; 764 case 'd': 765 command_line.force_common_definition = TRUE; 766 break; 767 case OPTION_DEFSYM: 768 lex_string = optarg; 769 lex_redirect (optarg); 770 parser_input = input_defsym; 771 parsing_defsym = 1; 772 yyparse (); 773 parsing_defsym = 0; 774 lex_string = NULL; 775 break; 776 case OPTION_DEMANGLE: 777 demangling = TRUE; 778 if (optarg != NULL) 779 { 780 enum demangling_styles style; 781 782 style = cplus_demangle_name_to_style (optarg); 783 if (style == unknown_demangling) 784 einfo (_("%F%P: unknown demangling style `%s'"), 785 optarg); 786 787 cplus_demangle_set_style (style); 788 } 789 break; 790 case 'I': /* Used on Solaris. */ 791 case OPTION_DYNAMIC_LINKER: 792 command_line.interpreter = optarg; 793 break; 794 case OPTION_SYSROOT: 795 /* Already handled in ldmain.c. */ 796 break; 797 case OPTION_EB: 798 command_line.endian = ENDIAN_BIG; 799 break; 800 case OPTION_EL: 801 command_line.endian = ENDIAN_LITTLE; 802 break; 803 case OPTION_EMBEDDED_RELOCS: 804 command_line.embedded_relocs = TRUE; 805 break; 806 case OPTION_EXPORT_DYNAMIC: 807 case 'E': /* HP/UX compatibility. */ 808 link_info.export_dynamic = TRUE; 809 break; 810 case 'e': 811 lang_add_entry (optarg, TRUE); 812 break; 813 case 'f': 814 if (command_line.auxiliary_filters == NULL) 815 { 816 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 817 command_line.auxiliary_filters[0] = optarg; 818 command_line.auxiliary_filters[1] = NULL; 819 } 820 else 821 { 822 int c; 823 char **p; 824 825 c = 0; 826 for (p = command_line.auxiliary_filters; *p != NULL; p++) 827 ++c; 828 command_line.auxiliary_filters 829 = xrealloc (command_line.auxiliary_filters, 830 (c + 2) * sizeof (char *)); 831 command_line.auxiliary_filters[c] = optarg; 832 command_line.auxiliary_filters[c + 1] = NULL; 833 } 834 break; 835 case 'F': 836 command_line.filter_shlib = optarg; 837 break; 838 case OPTION_FORCE_EXE_SUFFIX: 839 command_line.force_exe_suffix = TRUE; 840 break; 841 case 'G': 842 { 843 char *end; 844 g_switch_value = strtoul (optarg, &end, 0); 845 if (*end) 846 einfo (_("%P%F: invalid number `%s'\n"), optarg); 847 } 848 break; 849 case 'g': 850 /* Ignore. */ 851 break; 852 case OPTION_GC_SECTIONS: 853 link_info.gc_sections = TRUE; 854 break; 855 case OPTION_PRINT_GC_SECTIONS: 856 link_info.print_gc_sections = TRUE; 857 break; 858 case OPTION_HELP: 859 help (); 860 xexit (0); 861 break; 862 case 'L': 863 ldfile_add_library_path (optarg, TRUE); 864 break; 865 case 'l': 866 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 867 break; 868 case 'M': 869 config.map_filename = "-"; 870 break; 871 case 'm': 872 /* Ignore. Was handled in a pre-parse. */ 873 break; 874 case OPTION_MAP: 875 config.map_filename = optarg; 876 break; 877 case 'N': 878 config.text_read_only = FALSE; 879 config.magic_demand_paged = FALSE; 880 config.dynamic_link = FALSE; 881 break; 882 case OPTION_NO_OMAGIC: 883 config.text_read_only = TRUE; 884 config.magic_demand_paged = TRUE; 885 /* NB/ Does not set dynamic_link to TRUE. 886 Use --call-shared or -Bdynamic for this. */ 887 break; 888 case 'n': 889 config.magic_demand_paged = FALSE; 890 config.dynamic_link = FALSE; 891 break; 892 case OPTION_NO_DEFINE_COMMON: 893 command_line.inhibit_common_definition = TRUE; 894 break; 895 case OPTION_NO_DEMANGLE: 896 demangling = FALSE; 897 break; 898 case OPTION_NO_GC_SECTIONS: 899 link_info.gc_sections = FALSE; 900 break; 901 case OPTION_NO_PRINT_GC_SECTIONS: 902 link_info.print_gc_sections = FALSE; 903 break; 904 case OPTION_NO_KEEP_MEMORY: 905 link_info.keep_memory = FALSE; 906 break; 907 case OPTION_NO_UNDEFINED: 908 link_info.unresolved_syms_in_objects 909 = how_to_report_unresolved_symbols; 910 break; 911 case OPTION_ALLOW_SHLIB_UNDEFINED: 912 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 913 break; 914 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 915 link_info.unresolved_syms_in_shared_libs 916 = how_to_report_unresolved_symbols; 917 break; 918 case OPTION_UNRESOLVED_SYMBOLS: 919 if (strcmp (optarg, "ignore-all") == 0) 920 { 921 link_info.unresolved_syms_in_objects = RM_IGNORE; 922 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 923 } 924 else if (strcmp (optarg, "report-all") == 0) 925 { 926 link_info.unresolved_syms_in_objects 927 = how_to_report_unresolved_symbols; 928 link_info.unresolved_syms_in_shared_libs 929 = how_to_report_unresolved_symbols; 930 } 931 else if (strcmp (optarg, "ignore-in-object-files") == 0) 932 { 933 link_info.unresolved_syms_in_objects = RM_IGNORE; 934 link_info.unresolved_syms_in_shared_libs 935 = how_to_report_unresolved_symbols; 936 } 937 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 938 { 939 link_info.unresolved_syms_in_objects 940 = how_to_report_unresolved_symbols; 941 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 942 } 943 else 944 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 945 break; 946 case OPTION_WARN_UNRESOLVED_SYMBOLS: 947 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 948 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 949 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 950 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 951 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 952 break; 953 954 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 955 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 956 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 957 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 958 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 959 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 960 break; 961 case OPTION_ALLOW_MULTIPLE_DEFINITION: 962 link_info.allow_multiple_definition = TRUE; 963 break; 964 case OPTION_NO_UNDEFINED_VERSION: 965 link_info.allow_undefined_version = FALSE; 966 break; 967 case OPTION_DEFAULT_SYMVER: 968 link_info.create_default_symver = TRUE; 969 break; 970 case OPTION_DEFAULT_IMPORTED_SYMVER: 971 link_info.default_imported_symver = TRUE; 972 break; 973 case OPTION_NO_WARN_MISMATCH: 974 command_line.warn_mismatch = FALSE; 975 break; 976 case OPTION_NO_WARN_SEARCH_MISMATCH: 977 command_line.warn_search_mismatch = FALSE; 978 break; 979 case OPTION_NOINHIBIT_EXEC: 980 force_make_executable = TRUE; 981 break; 982 case OPTION_NOSTDLIB: 983 config.only_cmd_line_lib_dirs = TRUE; 984 break; 985 case OPTION_NO_WHOLE_ARCHIVE: 986 whole_archive = FALSE; 987 break; 988 case 'O': 989 /* FIXME "-O<non-digits> <value>" used to set the address of 990 section <non-digits>. Was this for compatibility with 991 something, or can we create a new option to do that 992 (with a syntax similar to -defsym)? 993 getopt can't handle two args to an option without kludges. */ 994 995 /* Enable optimizations of output files. */ 996 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 997 break; 998 case 'o': 999 lang_add_output (optarg, 0); 1000 break; 1001 case OPTION_OFORMAT: 1002 lang_add_output_format (optarg, NULL, NULL, 0); 1003 break; 1004 case 'q': 1005 link_info.emitrelocations = TRUE; 1006 break; 1007 case 'i': 1008 case 'r': 1009 if (optind == last_optind) 1010 /* This can happen if the user put "-rpath,a" on the command 1011 line. (Or something similar. The comma is important). 1012 Getopt becomes confused and thinks that this is a -r option 1013 but it cannot parse the text after the -r so it refuses to 1014 increment the optind counter. Detect this case and issue 1015 an error message here. We cannot just make this a warning, 1016 increment optind, and continue because getopt is too confused 1017 and will seg-fault the next time around. */ 1018 einfo(_("%P%F: bad -rpath option\n")); 1019 1020 link_info.relocatable = TRUE; 1021 config.build_constructors = FALSE; 1022 config.magic_demand_paged = FALSE; 1023 config.text_read_only = FALSE; 1024 config.dynamic_link = FALSE; 1025 break; 1026 case 'R': 1027 /* The GNU linker traditionally uses -R to mean to include 1028 only the symbols from a file. The Solaris linker uses -R 1029 to set the path used by the runtime linker to find 1030 libraries. This is the GNU linker -rpath argument. We 1031 try to support both simultaneously by checking the file 1032 named. If it is a directory, rather than a regular file, 1033 we assume -rpath was meant. */ 1034 { 1035 struct stat s; 1036 1037 if (stat (optarg, &s) >= 0 1038 && ! S_ISDIR (s.st_mode)) 1039 { 1040 lang_add_input_file (optarg, 1041 lang_input_file_is_symbols_only_enum, 1042 NULL); 1043 break; 1044 } 1045 } 1046 /* Fall through. */ 1047 case OPTION_RPATH: 1048 if (command_line.rpath == NULL) 1049 command_line.rpath = xstrdup (optarg); 1050 else 1051 { 1052 size_t rpath_len = strlen (command_line.rpath); 1053 size_t optarg_len = strlen (optarg); 1054 char *buf; 1055 char *cp = command_line.rpath; 1056 1057 /* First see whether OPTARG is already in the path. */ 1058 do 1059 { 1060 if (strncmp (optarg, cp, optarg_len) == 0 1061 && (cp[optarg_len] == 0 1062 || cp[optarg_len] == config.rpath_separator)) 1063 /* We found it. */ 1064 break; 1065 1066 /* Not yet found. */ 1067 cp = strchr (cp, config.rpath_separator); 1068 if (cp != NULL) 1069 ++cp; 1070 } 1071 while (cp != NULL); 1072 1073 if (cp == NULL) 1074 { 1075 buf = xmalloc (rpath_len + optarg_len + 2); 1076 sprintf (buf, "%s%c%s", command_line.rpath, 1077 config.rpath_separator, optarg); 1078 free (command_line.rpath); 1079 command_line.rpath = buf; 1080 } 1081 } 1082 break; 1083 case OPTION_RPATH_LINK: 1084 if (command_line.rpath_link == NULL) 1085 command_line.rpath_link = xstrdup (optarg); 1086 else 1087 { 1088 char *buf; 1089 1090 buf = xmalloc (strlen (command_line.rpath_link) 1091 + strlen (optarg) 1092 + 2); 1093 sprintf (buf, "%s%c%s", command_line.rpath_link, 1094 config.rpath_separator, optarg); 1095 free (command_line.rpath_link); 1096 command_line.rpath_link = buf; 1097 } 1098 break; 1099 case OPTION_RELAX: 1100 command_line.relax = TRUE; 1101 break; 1102 case OPTION_RETAIN_SYMBOLS_FILE: 1103 add_keepsyms_file (optarg); 1104 break; 1105 case 'S': 1106 link_info.strip = strip_debugger; 1107 break; 1108 case 's': 1109 link_info.strip = strip_all; 1110 break; 1111 case OPTION_STRIP_DISCARDED: 1112 link_info.strip_discarded = TRUE; 1113 break; 1114 case OPTION_NO_STRIP_DISCARDED: 1115 link_info.strip_discarded = FALSE; 1116 break; 1117 case OPTION_SHARED: 1118 if (config.has_shared) 1119 { 1120 link_info.shared = TRUE; 1121 /* When creating a shared library, the default 1122 behaviour is to ignore any unresolved references. */ 1123 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1124 link_info.unresolved_syms_in_objects = RM_IGNORE; 1125 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1126 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1127 } 1128 else 1129 einfo (_("%P%F: -shared not supported\n")); 1130 break; 1131 case OPTION_PIE: 1132 if (config.has_shared) 1133 { 1134 link_info.shared = TRUE; 1135 link_info.pie = TRUE; 1136 } 1137 else 1138 einfo (_("%P%F: -pie not supported\n")); 1139 break; 1140 case 'h': /* Used on Solaris. */ 1141 case OPTION_SONAME: 1142 command_line.soname = optarg; 1143 break; 1144 case OPTION_SORT_COMMON: 1145 config.sort_common = TRUE; 1146 break; 1147 case OPTION_SORT_SECTION: 1148 if (strcmp (optarg, N_("name")) == 0) 1149 sort_section = by_name; 1150 else if (strcmp (optarg, N_("alignment")) == 0) 1151 sort_section = by_alignment; 1152 else 1153 einfo (_("%P%F: invalid section sorting option: %s\n"), 1154 optarg); 1155 break; 1156 case OPTION_STATS: 1157 config.stats = TRUE; 1158 break; 1159 case OPTION_SYMBOLIC: 1160 command_line.symbolic = symbolic; 1161 break; 1162 case OPTION_SYMBOLIC_FUNCTIONS: 1163 command_line.symbolic = symbolic_functions; 1164 break; 1165 case 't': 1166 trace_files = TRUE; 1167 break; 1168 case 'T': 1169 ldfile_open_command_file (optarg); 1170 parser_input = input_script; 1171 yyparse (); 1172 break; 1173 case OPTION_DEFAULT_SCRIPT: 1174 command_line.default_script = optarg; 1175 break; 1176 case OPTION_SECTION_START: 1177 { 1178 char *optarg2; 1179 char *sec_name; 1180 int len; 1181 1182 /* Check for <something>=<somthing>... */ 1183 optarg2 = strchr (optarg, '='); 1184 if (optarg2 == NULL) 1185 einfo (_("%P%F: invalid argument to option" 1186 " \"--section-start\"\n")); 1187 1188 optarg2++; 1189 1190 /* So far so good. Are all the args present? */ 1191 if ((*optarg == '\0') || (*optarg2 == '\0')) 1192 einfo (_("%P%F: missing argument(s) to option" 1193 " \"--section-start\"\n")); 1194 1195 /* We must copy the section name as set_section_start 1196 doesn't do it for us. */ 1197 len = optarg2 - optarg; 1198 sec_name = xmalloc (len); 1199 memcpy (sec_name, optarg, len - 1); 1200 sec_name[len - 1] = 0; 1201 1202 /* Then set it... */ 1203 set_section_start (sec_name, optarg2); 1204 } 1205 break; 1206 case OPTION_TARGET_HELP: 1207 /* Mention any target specific options. */ 1208 ldemul_list_emulation_options (stdout); 1209 exit (0); 1210 case OPTION_TBSS: 1211 set_segment_start (".bss", optarg); 1212 break; 1213 case OPTION_TDATA: 1214 set_segment_start (".data", optarg); 1215 break; 1216 case OPTION_TTEXT: 1217 set_segment_start (".text", optarg); 1218 break; 1219 case OPTION_TRADITIONAL_FORMAT: 1220 link_info.traditional_format = TRUE; 1221 break; 1222 case OPTION_TASK_LINK: 1223 link_info.task_link = TRUE; 1224 /* Fall through - do an implied -r option. */ 1225 case OPTION_UR: 1226 link_info.relocatable = TRUE; 1227 config.build_constructors = TRUE; 1228 config.magic_demand_paged = FALSE; 1229 config.text_read_only = FALSE; 1230 config.dynamic_link = FALSE; 1231 break; 1232 case 'u': 1233 ldlang_add_undef (optarg); 1234 break; 1235 case OPTION_UNIQUE: 1236 if (optarg != NULL) 1237 lang_add_unique (optarg); 1238 else 1239 config.unique_orphan_sections = TRUE; 1240 break; 1241 case OPTION_VERBOSE: 1242 ldversion (1); 1243 version_printed = TRUE; 1244 trace_file_tries = TRUE; 1245 overflow_cutoff_limit = -2; 1246 break; 1247 case 'v': 1248 ldversion (0); 1249 version_printed = TRUE; 1250 break; 1251 case 'V': 1252 ldversion (1); 1253 version_printed = TRUE; 1254 break; 1255 case OPTION_VERSION: 1256 ldversion (2); 1257 xexit (0); 1258 break; 1259 case OPTION_VERSION_SCRIPT: 1260 /* This option indicates a small script that only specifies 1261 version information. Read it, but don't assume that 1262 we've seen a linker script. */ 1263 { 1264 FILE *hold_script_handle; 1265 1266 hold_script_handle = saved_script_handle; 1267 ldfile_open_command_file (optarg); 1268 saved_script_handle = hold_script_handle; 1269 parser_input = input_version_script; 1270 yyparse (); 1271 } 1272 break; 1273 case OPTION_VERSION_EXPORTS_SECTION: 1274 /* This option records a version symbol to be applied to the 1275 symbols listed for export to be found in the object files 1276 .exports sections. */ 1277 command_line.version_exports_section = optarg; 1278 break; 1279 case OPTION_DYNAMIC_LIST_DATA: 1280 command_line.dynamic_list = dynamic_list_data; 1281 if (command_line.symbolic == symbolic) 1282 command_line.symbolic = symbolic_unset; 1283 break; 1284 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1285 lang_append_dynamic_list_cpp_typeinfo (); 1286 if (command_line.dynamic_list != dynamic_list_data) 1287 command_line.dynamic_list = dynamic_list; 1288 if (command_line.symbolic == symbolic) 1289 command_line.symbolic = symbolic_unset; 1290 break; 1291 case OPTION_DYNAMIC_LIST_CPP_NEW: 1292 lang_append_dynamic_list_cpp_new (); 1293 if (command_line.dynamic_list != dynamic_list_data) 1294 command_line.dynamic_list = dynamic_list; 1295 if (command_line.symbolic == symbolic) 1296 command_line.symbolic = symbolic_unset; 1297 break; 1298 case OPTION_DYNAMIC_LIST: 1299 /* This option indicates a small script that only specifies 1300 a dynamic list. Read it, but don't assume that we've 1301 seen a linker script. */ 1302 { 1303 FILE *hold_script_handle; 1304 1305 hold_script_handle = saved_script_handle; 1306 ldfile_open_command_file (optarg); 1307 saved_script_handle = hold_script_handle; 1308 parser_input = input_dynamic_list; 1309 yyparse (); 1310 } 1311 if (command_line.dynamic_list != dynamic_list_data) 1312 command_line.dynamic_list = dynamic_list; 1313 if (command_line.symbolic == symbolic) 1314 command_line.symbolic = symbolic_unset; 1315 break; 1316 case OPTION_WARN_COMMON: 1317 config.warn_common = TRUE; 1318 break; 1319 case OPTION_WARN_CONSTRUCTORS: 1320 config.warn_constructors = TRUE; 1321 break; 1322 case OPTION_WARN_FATAL: 1323 config.fatal_warnings = TRUE; 1324 break; 1325 case OPTION_NO_WARN_FATAL: 1326 no_fatal_warnings = TRUE; 1327 break; 1328 case OPTION_WARN_MULTIPLE_GP: 1329 config.warn_multiple_gp = TRUE; 1330 break; 1331 case OPTION_WARN_ONCE: 1332 config.warn_once = TRUE; 1333 break; 1334 case OPTION_WARN_SECTION_ALIGN: 1335 config.warn_section_align = TRUE; 1336 break; 1337 case OPTION_WARN_SHARED_TEXTREL: 1338 link_info.warn_shared_textrel = TRUE; 1339 break; 1340 case OPTION_WHOLE_ARCHIVE: 1341 whole_archive = TRUE; 1342 break; 1343 case OPTION_ADD_NEEDED: 1344 add_needed = TRUE; 1345 break; 1346 case OPTION_NO_ADD_NEEDED: 1347 add_needed = FALSE; 1348 break; 1349 case OPTION_AS_NEEDED: 1350/* XXX: --as-needed is broken on powerpc64 */ 1351#ifndef __powerpc64__ 1352 as_needed = TRUE; 1353 break; 1354#endif 1355 case OPTION_NO_AS_NEEDED: 1356 as_needed = FALSE; 1357 break; 1358 case OPTION_WRAP: 1359 add_wrap (optarg); 1360 break; 1361 case OPTION_DISCARD_NONE: 1362 link_info.discard = discard_none; 1363 break; 1364 case 'X': 1365 link_info.discard = discard_l; 1366 break; 1367 case 'x': 1368 link_info.discard = discard_all; 1369 break; 1370 case 'Y': 1371 if (CONST_STRNEQ (optarg, "P,")) 1372 optarg += 2; 1373 if (default_dirlist != NULL) 1374 free (default_dirlist); 1375 default_dirlist = xstrdup (optarg); 1376 break; 1377 case 'y': 1378 add_ysym (optarg); 1379 break; 1380 case OPTION_SPARE_DYNAMIC_TAGS: 1381 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1382 break; 1383 case OPTION_SPLIT_BY_RELOC: 1384 if (optarg != NULL) 1385 config.split_by_reloc = strtoul (optarg, NULL, 0); 1386 else 1387 config.split_by_reloc = 32768; 1388 break; 1389 case OPTION_SPLIT_BY_FILE: 1390 if (optarg != NULL) 1391 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1392 else 1393 config.split_by_file = 1; 1394 break; 1395 case OPTION_CHECK_SECTIONS: 1396 command_line.check_section_addresses = TRUE; 1397 break; 1398 case OPTION_NO_CHECK_SECTIONS: 1399 command_line.check_section_addresses = FALSE; 1400 break; 1401 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1402 command_line.accept_unknown_input_arch = TRUE; 1403 break; 1404 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1405 command_line.accept_unknown_input_arch = FALSE; 1406 break; 1407 case '(': 1408 if (ingroup) 1409 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1410 1411 lang_enter_group (); 1412 ingroup = 1; 1413 break; 1414 case ')': 1415 if (! ingroup) 1416 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1417 1418 lang_leave_group (); 1419 ingroup = 0; 1420 break; 1421 1422 case OPTION_INIT: 1423 link_info.init_function = optarg; 1424 break; 1425 1426 case OPTION_FINI: 1427 link_info.fini_function = optarg; 1428 break; 1429 1430 case OPTION_REDUCE_MEMORY_OVERHEADS: 1431 link_info.reduce_memory_overheads = TRUE; 1432 if (config.hash_table_size == 0) 1433 config.hash_table_size = 1021; 1434 break; 1435 1436 case OPTION_HASH_SIZE: 1437 { 1438 bfd_size_type new_size; 1439 1440 new_size = strtoul (optarg, NULL, 0); 1441 if (new_size) 1442 config.hash_table_size = new_size; 1443 else 1444 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1445 } 1446 break; 1447 } 1448 } 1449 if (no_fatal_warnings) 1450 config.fatal_warnings = FALSE; 1451 1452 if (ingroup) 1453 lang_leave_group (); 1454 1455 if (default_dirlist != NULL) 1456 { 1457 set_default_dirlist (default_dirlist); 1458 free (default_dirlist); 1459 } 1460 1461 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1462 /* FIXME: Should we allow emulations a chance to set this ? */ 1463 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1464 1465 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1466 /* FIXME: Should we allow emulations a chance to set this ? */ 1467 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1468} 1469 1470/* Add the (colon-separated) elements of DIRLIST_PTR to the 1471 library search path. */ 1472 1473static void 1474set_default_dirlist (char *dirlist_ptr) 1475{ 1476 char *p; 1477 1478 while (1) 1479 { 1480 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1481 if (p != NULL) 1482 *p = '\0'; 1483 if (*dirlist_ptr != '\0') 1484 ldfile_add_library_path (dirlist_ptr, TRUE); 1485 if (p == NULL) 1486 break; 1487 dirlist_ptr = p + 1; 1488 } 1489} 1490 1491static void 1492set_section_start (char *sect, char *valstr) 1493{ 1494 const char *end; 1495 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1496 if (*end) 1497 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1498 lang_section_start (sect, exp_intop (val), NULL); 1499} 1500 1501static void 1502set_segment_start (const char *section, char *valstr) 1503{ 1504 const char *name; 1505 const char *end; 1506 segment_type *seg; 1507 1508 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1509 if (*end) 1510 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1511 /* If we already have an entry for this segment, update the existing 1512 value. */ 1513 name = section + 1; 1514 for (seg = segments; seg; seg = seg->next) 1515 if (strcmp (seg->name, name) == 0) 1516 { 1517 seg->value = val; 1518 return; 1519 } 1520 /* There was no existing value so we must create a new segment 1521 entry. */ 1522 seg = stat_alloc (sizeof (*seg)); 1523 seg->name = name; 1524 seg->value = val; 1525 seg->used = FALSE; 1526 /* Add it to the linked list of segments. */ 1527 seg->next = segments; 1528 segments = seg; 1529 /* Historically, -Ttext and friends set the base address of a 1530 particular section. For backwards compatibility, we still do 1531 that. If a SEGMENT_START directive is seen, the section address 1532 assignment will be disabled. */ 1533 lang_section_start (section, exp_intop (val), seg); 1534} 1535 1536 1537/* Print help messages for the options. */ 1538 1539static void 1540help (void) 1541{ 1542 unsigned i; 1543 const char **targets, **pp; 1544 int len; 1545 1546 printf (_("Usage: %s [options] file...\n"), program_name); 1547 1548 printf (_("Options:\n")); 1549 for (i = 0; i < OPTION_COUNT; i++) 1550 { 1551 if (ld_options[i].doc != NULL) 1552 { 1553 bfd_boolean comma; 1554 unsigned j; 1555 1556 printf (" "); 1557 1558 comma = FALSE; 1559 len = 2; 1560 1561 j = i; 1562 do 1563 { 1564 if (ld_options[j].shortopt != '\0' 1565 && ld_options[j].control != NO_HELP) 1566 { 1567 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1568 len += (comma ? 2 : 0) + 2; 1569 if (ld_options[j].arg != NULL) 1570 { 1571 if (ld_options[j].opt.has_arg != optional_argument) 1572 { 1573 printf (" "); 1574 ++len; 1575 } 1576 printf ("%s", _(ld_options[j].arg)); 1577 len += strlen (_(ld_options[j].arg)); 1578 } 1579 comma = TRUE; 1580 } 1581 ++j; 1582 } 1583 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1584 1585 j = i; 1586 do 1587 { 1588 if (ld_options[j].opt.name != NULL 1589 && ld_options[j].control != NO_HELP) 1590 { 1591 int two_dashes = 1592 (ld_options[j].control == TWO_DASHES 1593 || ld_options[j].control == EXACTLY_TWO_DASHES); 1594 1595 printf ("%s-%s%s", 1596 comma ? ", " : "", 1597 two_dashes ? "-" : "", 1598 ld_options[j].opt.name); 1599 len += ((comma ? 2 : 0) 1600 + 1 1601 + (two_dashes ? 1 : 0) 1602 + strlen (ld_options[j].opt.name)); 1603 if (ld_options[j].arg != NULL) 1604 { 1605 printf (" %s", _(ld_options[j].arg)); 1606 len += 1 + strlen (_(ld_options[j].arg)); 1607 } 1608 comma = TRUE; 1609 } 1610 ++j; 1611 } 1612 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1613 1614 if (len >= 30) 1615 { 1616 printf ("\n"); 1617 len = 0; 1618 } 1619 1620 for (; len < 30; len++) 1621 putchar (' '); 1622 1623 printf ("%s\n", _(ld_options[i].doc)); 1624 } 1625 } 1626 printf (_(" @FILE")); 1627 for (len = strlen (" @FILE"); len < 30; len++) 1628 putchar (' '); 1629 printf (_("Read options from FILE\n")); 1630 1631 /* Note: Various tools (such as libtool) depend upon the 1632 format of the listings below - do not change them. */ 1633 /* xgettext:c-format */ 1634 printf (_("%s: supported targets:"), program_name); 1635 targets = bfd_target_list (); 1636 for (pp = targets; *pp != NULL; pp++) 1637 printf (" %s", *pp); 1638 free (targets); 1639 printf ("\n"); 1640 1641 /* xgettext:c-format */ 1642 printf (_("%s: supported emulations: "), program_name); 1643 ldemul_list_emulations (stdout); 1644 printf ("\n"); 1645 1646 /* xgettext:c-format */ 1647 printf (_("%s: emulation specific options:\n"), program_name); 1648 ldemul_list_emulation_options (stdout); 1649 printf ("\n"); 1650 1651 if (REPORT_BUGS_TO[0]) 1652 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1653} 1654