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_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_WARN_MULTIPLE_GP, 120 OPTION_WARN_ONCE, 121 OPTION_WARN_SECTION_ALIGN, 122 OPTION_SPLIT_BY_RELOC, 123 OPTION_SPLIT_BY_FILE , 124 OPTION_WHOLE_ARCHIVE, 125 OPTION_ADD_NEEDED, 126 OPTION_NO_ADD_NEEDED, 127 OPTION_AS_NEEDED, 128 OPTION_NO_AS_NEEDED, 129 OPTION_WRAP, 130 OPTION_FORCE_EXE_SUFFIX, 131 OPTION_GC_SECTIONS, 132 OPTION_NO_GC_SECTIONS, 133 OPTION_PRINT_GC_SECTIONS, 134 OPTION_NO_PRINT_GC_SECTIONS, 135 OPTION_HASH_SIZE, 136 OPTION_CHECK_SECTIONS, 137 OPTION_NO_CHECK_SECTIONS, 138 OPTION_NO_UNDEFINED, 139 OPTION_INIT, 140 OPTION_FINI, 141 OPTION_SECTION_START, 142 OPTION_UNIQUE, 143 OPTION_TARGET_HELP, 144 OPTION_ALLOW_SHLIB_UNDEFINED, 145 OPTION_NO_ALLOW_SHLIB_UNDEFINED, 146 OPTION_ALLOW_MULTIPLE_DEFINITION, 147 OPTION_NO_UNDEFINED_VERSION, 148 OPTION_DEFAULT_SYMVER, 149 OPTION_DEFAULT_IMPORTED_SYMVER, 150 OPTION_DISCARD_NONE, 151 OPTION_SPARE_DYNAMIC_TAGS, 152 OPTION_NO_DEFINE_COMMON, 153 OPTION_NOSTDLIB, 154 OPTION_NO_OMAGIC, 155 OPTION_STRIP_DISCARDED, 156 OPTION_NO_STRIP_DISCARDED, 157 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, 158 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, 159 OPTION_PIE, 160 OPTION_UNRESOLVED_SYMBOLS, 161 OPTION_WARN_UNRESOLVED_SYMBOLS, 162 OPTION_ERROR_UNRESOLVED_SYMBOLS, 163 OPTION_WARN_SHARED_TEXTREL, 164 OPTION_REDUCE_MEMORY_OVERHEADS, 165 OPTION_DEFAULT_SCRIPT 166}; 167 168/* The long options. This structure is used for both the option 169 parsing and the help text. */ 170 171struct ld_option 172{ 173 /* The long option information. */ 174 struct option opt; 175 /* The short option with the same meaning ('\0' if none). */ 176 char shortopt; 177 /* The name of the argument (NULL if none). */ 178 const char *arg; 179 /* The documentation string. If this is NULL, this is a synonym for 180 the previous option. */ 181 const char *doc; 182 enum { 183 /* Use one dash before long option name. */ 184 ONE_DASH, 185 /* Use two dashes before long option name. */ 186 TWO_DASHES, 187 /* Only accept two dashes before the long option name. 188 This is an overloading of the use of this enum, since originally it 189 was only intended to tell the --help display function how to display 190 the long option name. This feature was added in order to resolve 191 the confusion about the -omagic command line switch. Is it setting 192 the output file name to "magic" or is it setting the NMAGIC flag on 193 the output ? It has been decided that it is setting the output file 194 name, and that if you want to set the NMAGIC flag you should use -N 195 or --omagic. */ 196 EXACTLY_TWO_DASHES, 197 /* Don't mention this option in --help output. */ 198 NO_HELP 199 } control; 200}; 201 202static const struct ld_option ld_options[] = 203{ 204 { {NULL, required_argument, NULL, '\0'}, 205 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 206 ONE_DASH }, 207 { {"architecture", required_argument, NULL, 'A'}, 208 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 209 { {"format", required_argument, NULL, 'b'}, 210 'b', N_("TARGET"), N_("Specify target for following input files"), 211 TWO_DASHES }, 212 { {"mri-script", required_argument, NULL, 'c'}, 213 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 214 { {"dc", no_argument, NULL, 'd'}, 215 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 216 { {"dp", no_argument, NULL, 'd'}, 217 '\0', NULL, NULL, ONE_DASH }, 218 { {"entry", required_argument, NULL, 'e'}, 219 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 220 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 221 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 222 { {"EB", no_argument, NULL, OPTION_EB}, 223 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 224 { {"EL", no_argument, NULL, OPTION_EL}, 225 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 226 { {"auxiliary", required_argument, NULL, 'f'}, 227 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 228 TWO_DASHES }, 229 { {"filter", required_argument, NULL, 'F'}, 230 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 231 TWO_DASHES }, 232 { {NULL, no_argument, NULL, '\0'}, 233 'g', NULL, N_("Ignored"), ONE_DASH }, 234 { {"gpsize", required_argument, NULL, 'G'}, 235 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 236 TWO_DASHES }, 237 { {"soname", required_argument, NULL, OPTION_SONAME}, 238 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 239 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 240 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 241 TWO_DASHES }, 242 { {"library", required_argument, NULL, 'l'}, 243 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 244 { {"library-path", required_argument, NULL, 'L'}, 245 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 246 TWO_DASHES }, 247 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 248 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 249 { {NULL, required_argument, NULL, '\0'}, 250 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 251 { {"print-map", no_argument, NULL, 'M'}, 252 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 253 { {"nmagic", no_argument, NULL, 'n'}, 254 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 255 { {"omagic", no_argument, NULL, 'N'}, 256 'N', NULL, N_("Do not page align data, do not make text readonly"), 257 EXACTLY_TWO_DASHES }, 258 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 259 '\0', NULL, N_("Page align data, make text readonly"), 260 EXACTLY_TWO_DASHES }, 261 { {"output", required_argument, NULL, 'o'}, 262 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 263 { {NULL, required_argument, NULL, '\0'}, 264 'O', NULL, N_("Optimize output file"), ONE_DASH }, 265 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 266 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 267 { {"emit-relocs", no_argument, NULL, 'q'}, 268 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 269 { {"relocatable", no_argument, NULL, 'r'}, 270 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 271 { {NULL, no_argument, NULL, '\0'}, 272 'i', NULL, NULL, ONE_DASH }, 273 { {"just-symbols", required_argument, NULL, 'R'}, 274 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 275 TWO_DASHES }, 276 { {"strip-all", no_argument, NULL, 's'}, 277 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 278 { {"strip-debug", no_argument, NULL, 'S'}, 279 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 280 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 281 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 282 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 283 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 284 { {"trace", no_argument, NULL, 't'}, 285 't', NULL, N_("Trace file opens"), TWO_DASHES }, 286 { {"script", required_argument, NULL, 'T'}, 287 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 288 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 289 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 290 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 291 '\0', NULL, NULL, ONE_DASH }, 292 { {"undefined", required_argument, NULL, 'u'}, 293 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 294 TWO_DASHES }, 295 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 296 '\0', N_("[=SECTION]"), 297 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 298 { {"Ur", no_argument, NULL, OPTION_UR}, 299 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 300 { {"version", no_argument, NULL, OPTION_VERSION}, 301 'v', NULL, N_("Print version information"), TWO_DASHES }, 302 { {NULL, no_argument, NULL, '\0'}, 303 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 304 { {"discard-all", no_argument, NULL, 'x'}, 305 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 306 { {"discard-locals", no_argument, NULL, 'X'}, 307 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 308 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 309 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 310 { {"trace-symbol", required_argument, NULL, 'y'}, 311 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 312 { {NULL, required_argument, NULL, '\0'}, 313 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 314 ONE_DASH }, 315 { {"start-group", no_argument, NULL, '('}, 316 '(', NULL, N_("Start a group"), TWO_DASHES }, 317 { {"end-group", no_argument, NULL, ')'}, 318 ')', NULL, N_("End a group"), TWO_DASHES }, 319 { {"accept-unknown-input-arch", no_argument, NULL, 320 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 321 '\0', NULL, 322 N_("Accept input files whose architecture cannot be determined"), 323 TWO_DASHES }, 324 { {"no-accept-unknown-input-arch", no_argument, NULL, 325 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 326 '\0', NULL, N_("Reject input files whose architecture is unknown"), 327 TWO_DASHES }, 328 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED}, 329 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n" 330 "\t\t\t\tfollowing dynamic libs"), TWO_DASHES }, 331 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED}, 332 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n" 333 "\t\t\t\tin following dynamic libs"), TWO_DASHES }, 334 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 335 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 336 TWO_DASHES }, 337 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 338 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), 339 TWO_DASHES }, 340 { {"assert", required_argument, NULL, OPTION_ASSERT}, 341 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 342 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 343 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 344 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 345 '\0', NULL, NULL, ONE_DASH }, 346 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 347 '\0', NULL, NULL, ONE_DASH }, 348 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 349 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 350 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 351 '\0', NULL, NULL, ONE_DASH }, 352 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 353 '\0', NULL, NULL, ONE_DASH }, 354 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 355 '\0', NULL, NULL, ONE_DASH }, 356 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 357 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 358 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 359 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 360 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 361 '\0', NULL, N_("Check section addresses for overlaps (default)"), 362 TWO_DASHES }, 363 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 364 '\0', NULL, N_("Do not check section addresses for overlaps"), 365 TWO_DASHES }, 366 { {"cref", no_argument, NULL, OPTION_CREF}, 367 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 368 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 369 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 370 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 371 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 372 TWO_DASHES }, 373 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 374 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 375 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 376 '\0', NULL, N_("Treat warnings as errors"), 377 TWO_DASHES }, 378 { {"fini", required_argument, NULL, OPTION_FINI}, 379 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 380 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 381 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 382 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 383 '\0', NULL, N_("Remove unused sections (on some targets)"), 384 TWO_DASHES }, 385 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 386 '\0', NULL, N_("Don't remove unused sections (default)"), 387 TWO_DASHES }, 388 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 389 '\0', NULL, N_("List removed unused sections on stderr"), 390 TWO_DASHES }, 391 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 392 '\0', NULL, N_("Do not list removed unused sections"), 393 TWO_DASHES }, 394 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 395 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 396 TWO_DASHES }, 397 { {"help", no_argument, NULL, OPTION_HELP}, 398 '\0', NULL, N_("Print option help"), TWO_DASHES }, 399 { {"init", required_argument, NULL, OPTION_INIT}, 400 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 401 { {"Map", required_argument, NULL, OPTION_MAP}, 402 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 403 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 404 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 405 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 406 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 407 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 408 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 409 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 410 '\0', NULL, N_("Do not allow unresolved references in object files"), 411 TWO_DASHES }, 412 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 413 '\0', NULL, N_("Allow unresolved references in shared libaries"), 414 TWO_DASHES }, 415 { {"no-allow-shlib-undefined", no_argument, NULL, 416 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 417 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 418 TWO_DASHES }, 419 { {"allow-multiple-definition", no_argument, NULL, 420 OPTION_ALLOW_MULTIPLE_DEFINITION}, 421 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 422 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 423 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 424 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 425 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 426 { {"default-imported-symver", no_argument, NULL, 427 OPTION_DEFAULT_IMPORTED_SYMVER}, 428 '\0', NULL, N_("Create default symbol version for imported symbols"), 429 TWO_DASHES }, 430 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 431 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 432 { {"no-warn-search-mismatch", no_argument, NULL, 433 OPTION_NO_WARN_SEARCH_MISMATCH}, 434 '\0', NULL, N_("Don't warn on finding an incompatible library"), 435 TWO_DASHES}, 436 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 437 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 438 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 439 '\0', NULL, N_("Create an output file even if errors occur"), 440 TWO_DASHES }, 441 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 442 '\0', NULL, NULL, NO_HELP }, 443 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 444 '\0', NULL, N_("Only use library directories specified on\n" 445 "\t\t\t\tthe command line"), ONE_DASH }, 446 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 447 '\0', N_("TARGET"), N_("Specify target of output file"), 448 EXACTLY_TWO_DASHES }, 449 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 450 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 451 { {"reduce-memory-overheads", no_argument, NULL, 452 OPTION_REDUCE_MEMORY_OVERHEADS}, 453 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 454 TWO_DASHES }, 455 { {"relax", no_argument, NULL, OPTION_RELAX}, 456 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 457 { {"retain-symbols-file", required_argument, NULL, 458 OPTION_RETAIN_SYMBOLS_FILE}, 459 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 460 { {"rpath", required_argument, NULL, OPTION_RPATH}, 461 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 462 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 463 '\0', N_("PATH"), N_("Set link time shared library search path"), 464 ONE_DASH }, 465 { {"shared", no_argument, NULL, OPTION_SHARED}, 466 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 467 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 468 '\0', NULL, NULL, ONE_DASH }, 469 { {"pie", no_argument, NULL, OPTION_PIE}, 470 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 471 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 472 '\0', NULL, NULL, TWO_DASHES }, 473 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, 474 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, 475 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 476 '\0', NULL, NULL, NO_HELP }, 477 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 478 '\0', N_("name|alignment"), 479 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 480 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 481 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 482 TWO_DASHES }, 483 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 484 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 485 TWO_DASHES }, 486 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 487 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 488 TWO_DASHES }, 489 { {"stats", no_argument, NULL, OPTION_STATS}, 490 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 491 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 492 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 493 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 494 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 495 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 496 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 497 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 498 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 499 TWO_DASHES }, 500 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 501 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 502 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 503 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 504 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 505 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 506 { {"unresolved-symbols=<method>", required_argument, NULL, 507 OPTION_UNRESOLVED_SYMBOLS}, 508 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 509 "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n" 510 "\t\t\t\tignore-in-shared-libs"), TWO_DASHES }, 511 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 512 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 513 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 514 '\0', NULL, NULL, NO_HELP }, 515 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 516 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 517 { {"version-exports-section", required_argument, NULL, 518 OPTION_VERSION_EXPORTS_SECTION }, 519 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 520 "\t\t\t\tSYMBOL as the version."), TWO_DASHES }, 521 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 522 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 523 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 524 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 525 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 526 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 527 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 528 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 529 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 530 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 531 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 532 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 533 TWO_DASHES }, 534 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 535 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 536 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 537 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 538 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 539 '\0', NULL, N_("Warn if start of section changes due to alignment"), 540 TWO_DASHES }, 541 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 542 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 543 TWO_DASHES }, 544 { {"warn-unresolved-symbols", no_argument, NULL, 545 OPTION_WARN_UNRESOLVED_SYMBOLS}, 546 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 547 { {"error-unresolved-symbols", no_argument, NULL, 548 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 549 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 550 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 551 '\0', NULL, N_("Include all objects from following archives"), 552 TWO_DASHES }, 553 { {"wrap", required_argument, NULL, OPTION_WRAP}, 554 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 555}; 556 557#define OPTION_COUNT ARRAY_SIZE (ld_options) 558 559void 560parse_args (unsigned argc, char **argv) 561{ 562 unsigned i; 563 int is, il, irl; 564 int ingroup = 0; 565 char *default_dirlist = NULL; 566 char *shortopts; 567 struct option *longopts; 568 struct option *really_longopts; 569 int last_optind; 570 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 571 572 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 573 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 574 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 575 576 /* Starting the short option string with '-' is for programs that 577 expect options and other ARGV-elements in any order and that care about 578 the ordering of the two. We describe each non-option ARGV-element 579 as if it were the argument of an option with character code 1. */ 580 shortopts[0] = '-'; 581 is = 1; 582 il = 0; 583 irl = 0; 584 for (i = 0; i < OPTION_COUNT; i++) 585 { 586 if (ld_options[i].shortopt != '\0') 587 { 588 shortopts[is] = ld_options[i].shortopt; 589 ++is; 590 if (ld_options[i].opt.has_arg == required_argument 591 || ld_options[i].opt.has_arg == optional_argument) 592 { 593 shortopts[is] = ':'; 594 ++is; 595 if (ld_options[i].opt.has_arg == optional_argument) 596 { 597 shortopts[is] = ':'; 598 ++is; 599 } 600 } 601 } 602 if (ld_options[i].opt.name != NULL) 603 { 604 if (ld_options[i].control == EXACTLY_TWO_DASHES) 605 { 606 really_longopts[irl] = ld_options[i].opt; 607 ++irl; 608 } 609 else 610 { 611 longopts[il] = ld_options[i].opt; 612 ++il; 613 } 614 } 615 } 616 shortopts[is] = '\0'; 617 longopts[il].name = NULL; 618 really_longopts[irl].name = NULL; 619 620 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 621 622 /* The -G option is ambiguous on different platforms. Sometimes it 623 specifies the largest data size to put into the small data 624 section. Sometimes it is equivalent to --shared. Unfortunately, 625 the first form takes an argument, while the second does not. 626 627 We need to permit the --shared form because on some platforms, 628 such as Solaris, gcc -shared will pass -G to the linker. 629 630 To permit either usage, we look through the argument list. If we 631 find -G not followed by a number, we change it into --shared. 632 This will work for most normal cases. */ 633 for (i = 1; i < argc; i++) 634 if (strcmp (argv[i], "-G") == 0 635 && (i + 1 >= argc 636 || ! ISDIGIT (argv[i + 1][0]))) 637 argv[i] = (char *) "--shared"; 638 639 /* Because we permit long options to start with a single dash, and 640 we have a --library option, and the -l option is conventionally 641 used with an immediately following argument, we can have bad 642 results if somebody tries to use -l with a library whose name 643 happens to start with "ibrary", as in -li. We avoid problems by 644 simply turning -l into --library. This means that users will 645 have to use two dashes in order to use --library, which is OK 646 since that's how it is documented. 647 648 FIXME: It's possible that this problem can arise for other short 649 options as well, although the user does always have the recourse 650 of adding a space between the option and the argument. */ 651 for (i = 1; i < argc; i++) 652 { 653 if (argv[i][0] == '-' 654 && argv[i][1] == 'l' 655 && argv[i][2] != '\0') 656 { 657 char *n; 658 659 n = xmalloc (strlen (argv[i]) + 20); 660 sprintf (n, "--library=%s", argv[i] + 2); 661 argv[i] = n; 662 } 663 } 664 665 last_optind = -1; 666 while (1) 667 { 668 int longind; 669 int optc; 670 671 /* Using last_optind lets us avoid calling ldemul_parse_args 672 multiple times on a single option, which would lead to 673 confusion in the internal static variables maintained by 674 getopt. This could otherwise happen for an argument like 675 -nx, in which the -n is parsed as a single option, and we 676 loop around to pick up the -x. */ 677 if (optind != last_optind) 678 if (ldemul_parse_args (argc, argv)) 679 continue; 680 681 /* getopt_long_only is like getopt_long, but '-' as well as '--' 682 can indicate a long option. */ 683 opterr = 0; 684 last_optind = optind; 685 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 686 if (optc == '?') 687 { 688 optind = last_optind; 689 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 690 } 691 692 if (ldemul_handle_option (optc)) 693 continue; 694 695 if (optc == -1) 696 break; 697 698 switch (optc) 699 { 700 case '?': 701 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 702 /* Fall through. */ 703 704 default: 705 einfo (_("%P%F: use the --help option for usage information\n")); 706 707 case 1: /* File name. */ 708 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 709 break; 710 711 case OPTION_IGNORE: 712 break; 713 case 'a': 714 /* For HP/UX compatibility. Actually -a shared should mean 715 ``use only shared libraries'' but, then, we don't 716 currently support shared libraries on HP/UX anyhow. */ 717 if (strcmp (optarg, "archive") == 0) 718 config.dynamic_link = FALSE; 719 else if (strcmp (optarg, "shared") == 0 720 || strcmp (optarg, "default") == 0) 721 config.dynamic_link = TRUE; 722 else 723 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 724 break; 725 case OPTION_ASSERT: 726 /* FIXME: We just ignore these, but we should handle them. */ 727 if (strcmp (optarg, "definitions") == 0) 728 ; 729 else if (strcmp (optarg, "nodefinitions") == 0) 730 ; 731 else if (strcmp (optarg, "nosymbolic") == 0) 732 ; 733 else if (strcmp (optarg, "pure-text") == 0) 734 ; 735 else 736 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 737 break; 738 case 'A': 739 ldfile_add_arch (optarg); 740 break; 741 case 'b': 742 lang_add_target (optarg); 743 break; 744 case 'c': 745 ldfile_open_command_file (optarg); 746 parser_input = input_mri_script; 747 yyparse (); 748 break; 749 case OPTION_CALL_SHARED: 750 config.dynamic_link = TRUE; 751 break; 752 case OPTION_NON_SHARED: 753 config.dynamic_link = FALSE; 754 break; 755 case OPTION_CREF: 756 command_line.cref = TRUE; 757 link_info.notice_all = TRUE; 758 break; 759 case 'd': 760 command_line.force_common_definition = TRUE; 761 break; 762 case OPTION_DEFSYM: 763 lex_string = optarg; 764 lex_redirect (optarg); 765 parser_input = input_defsym; 766 parsing_defsym = 1; 767 yyparse (); 768 parsing_defsym = 0; 769 lex_string = NULL; 770 break; 771 case OPTION_DEMANGLE: 772 demangling = TRUE; 773 if (optarg != NULL) 774 { 775 enum demangling_styles style; 776 777 style = cplus_demangle_name_to_style (optarg); 778 if (style == unknown_demangling) 779 einfo (_("%F%P: unknown demangling style `%s'"), 780 optarg); 781 782 cplus_demangle_set_style (style); 783 } 784 break; 785 case 'I': /* Used on Solaris. */ 786 case OPTION_DYNAMIC_LINKER: 787 command_line.interpreter = optarg; 788 break; 789 case OPTION_SYSROOT: 790 /* Already handled in ldmain.c. */ 791 break; 792 case OPTION_EB: 793 command_line.endian = ENDIAN_BIG; 794 break; 795 case OPTION_EL: 796 command_line.endian = ENDIAN_LITTLE; 797 break; 798 case OPTION_EMBEDDED_RELOCS: 799 command_line.embedded_relocs = TRUE; 800 break; 801 case OPTION_EXPORT_DYNAMIC: 802 case 'E': /* HP/UX compatibility. */ 803 link_info.export_dynamic = TRUE; 804 break; 805 case 'e': 806 lang_add_entry (optarg, TRUE); 807 break; 808 case 'f': 809 if (command_line.auxiliary_filters == NULL) 810 { 811 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 812 command_line.auxiliary_filters[0] = optarg; 813 command_line.auxiliary_filters[1] = NULL; 814 } 815 else 816 { 817 int c; 818 char **p; 819 820 c = 0; 821 for (p = command_line.auxiliary_filters; *p != NULL; p++) 822 ++c; 823 command_line.auxiliary_filters 824 = xrealloc (command_line.auxiliary_filters, 825 (c + 2) * sizeof (char *)); 826 command_line.auxiliary_filters[c] = optarg; 827 command_line.auxiliary_filters[c + 1] = NULL; 828 } 829 break; 830 case 'F': 831 command_line.filter_shlib = optarg; 832 break; 833 case OPTION_FORCE_EXE_SUFFIX: 834 command_line.force_exe_suffix = TRUE; 835 break; 836 case 'G': 837 { 838 char *end; 839 g_switch_value = strtoul (optarg, &end, 0); 840 if (*end) 841 einfo (_("%P%F: invalid number `%s'\n"), optarg); 842 } 843 break; 844 case 'g': 845 /* Ignore. */ 846 break; 847 case OPTION_GC_SECTIONS: 848 link_info.gc_sections = TRUE; 849 break; 850 case OPTION_PRINT_GC_SECTIONS: 851 link_info.print_gc_sections = TRUE; 852 break; 853 case OPTION_HELP: 854 help (); 855 xexit (0); 856 break; 857 case 'L': 858 ldfile_add_library_path (optarg, TRUE); 859 break; 860 case 'l': 861 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 862 break; 863 case 'M': 864 config.map_filename = "-"; 865 break; 866 case 'm': 867 /* Ignore. Was handled in a pre-parse. */ 868 break; 869 case OPTION_MAP: 870 config.map_filename = optarg; 871 break; 872 case 'N': 873 config.text_read_only = FALSE; 874 config.magic_demand_paged = FALSE; 875 config.dynamic_link = FALSE; 876 break; 877 case OPTION_NO_OMAGIC: 878 config.text_read_only = TRUE; 879 config.magic_demand_paged = TRUE; 880 /* NB/ Does not set dynamic_link to TRUE. 881 Use --call-shared or -Bdynamic for this. */ 882 break; 883 case 'n': 884 config.magic_demand_paged = FALSE; 885 config.dynamic_link = FALSE; 886 break; 887 case OPTION_NO_DEFINE_COMMON: 888 command_line.inhibit_common_definition = TRUE; 889 break; 890 case OPTION_NO_DEMANGLE: 891 demangling = FALSE; 892 break; 893 case OPTION_NO_GC_SECTIONS: 894 link_info.gc_sections = FALSE; 895 break; 896 case OPTION_NO_PRINT_GC_SECTIONS: 897 link_info.print_gc_sections = FALSE; 898 break; 899 case OPTION_NO_KEEP_MEMORY: 900 link_info.keep_memory = FALSE; 901 break; 902 case OPTION_NO_UNDEFINED: 903 link_info.unresolved_syms_in_objects 904 = how_to_report_unresolved_symbols; 905 break; 906 case OPTION_ALLOW_SHLIB_UNDEFINED: 907 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 908 break; 909 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 910 link_info.unresolved_syms_in_shared_libs 911 = how_to_report_unresolved_symbols; 912 break; 913 case OPTION_UNRESOLVED_SYMBOLS: 914 if (strcmp (optarg, "ignore-all") == 0) 915 { 916 link_info.unresolved_syms_in_objects = RM_IGNORE; 917 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 918 } 919 else if (strcmp (optarg, "report-all") == 0) 920 { 921 link_info.unresolved_syms_in_objects 922 = how_to_report_unresolved_symbols; 923 link_info.unresolved_syms_in_shared_libs 924 = how_to_report_unresolved_symbols; 925 } 926 else if (strcmp (optarg, "ignore-in-object-files") == 0) 927 { 928 link_info.unresolved_syms_in_objects = RM_IGNORE; 929 link_info.unresolved_syms_in_shared_libs 930 = how_to_report_unresolved_symbols; 931 } 932 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 933 { 934 link_info.unresolved_syms_in_objects 935 = how_to_report_unresolved_symbols; 936 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 937 } 938 else 939 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 940 break; 941 case OPTION_WARN_UNRESOLVED_SYMBOLS: 942 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 943 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 944 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 945 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 946 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 947 break; 948 949 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 950 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 951 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 952 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 953 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 954 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 955 break; 956 case OPTION_ALLOW_MULTIPLE_DEFINITION: 957 link_info.allow_multiple_definition = TRUE; 958 break; 959 case OPTION_NO_UNDEFINED_VERSION: 960 link_info.allow_undefined_version = FALSE; 961 break; 962 case OPTION_DEFAULT_SYMVER: 963 link_info.create_default_symver = TRUE; 964 break; 965 case OPTION_DEFAULT_IMPORTED_SYMVER: 966 link_info.default_imported_symver = TRUE; 967 break; 968 case OPTION_NO_WARN_MISMATCH: 969 command_line.warn_mismatch = FALSE; 970 break; 971 case OPTION_NO_WARN_SEARCH_MISMATCH: 972 command_line.warn_search_mismatch = FALSE; 973 break; 974 case OPTION_NOINHIBIT_EXEC: 975 force_make_executable = TRUE; 976 break; 977 case OPTION_NOSTDLIB: 978 config.only_cmd_line_lib_dirs = TRUE; 979 break; 980 case OPTION_NO_WHOLE_ARCHIVE: 981 whole_archive = FALSE; 982 break; 983 case 'O': 984 /* FIXME "-O<non-digits> <value>" used to set the address of 985 section <non-digits>. Was this for compatibility with 986 something, or can we create a new option to do that 987 (with a syntax similar to -defsym)? 988 getopt can't handle two args to an option without kludges. */ 989 990 /* Enable optimizations of output files. */ 991 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 992 break; 993 case 'o': 994 lang_add_output (optarg, 0); 995 break; 996 case OPTION_OFORMAT: 997 lang_add_output_format (optarg, NULL, NULL, 0); 998 break; 999 case 'q': 1000 link_info.emitrelocations = TRUE; 1001 break; 1002 case 'i': 1003 case 'r': 1004 if (optind == last_optind) 1005 /* This can happen if the user put "-rpath,a" on the command 1006 line. (Or something similar. The comma is important). 1007 Getopt becomes confused and thinks that this is a -r option 1008 but it cannot parse the text after the -r so it refuses to 1009 increment the optind counter. Detect this case and issue 1010 an error message here. We cannot just make this a warning, 1011 increment optind, and continue because getopt is too confused 1012 and will seg-fault the next time around. */ 1013 einfo(_("%P%F: bad -rpath option\n")); 1014 1015 link_info.relocatable = TRUE; 1016 config.build_constructors = FALSE; 1017 config.magic_demand_paged = FALSE; 1018 config.text_read_only = FALSE; 1019 config.dynamic_link = FALSE; 1020 break; 1021 case 'R': 1022 /* The GNU linker traditionally uses -R to mean to include 1023 only the symbols from a file. The Solaris linker uses -R 1024 to set the path used by the runtime linker to find 1025 libraries. This is the GNU linker -rpath argument. We 1026 try to support both simultaneously by checking the file 1027 named. If it is a directory, rather than a regular file, 1028 we assume -rpath was meant. */ 1029 { 1030 struct stat s; 1031 1032 if (stat (optarg, &s) >= 0 1033 && ! S_ISDIR (s.st_mode)) 1034 { 1035 lang_add_input_file (optarg, 1036 lang_input_file_is_symbols_only_enum, 1037 NULL); 1038 break; 1039 } 1040 } 1041 /* Fall through. */ 1042 case OPTION_RPATH: 1043 if (command_line.rpath == NULL) 1044 command_line.rpath = xstrdup (optarg); 1045 else 1046 { 1047 size_t rpath_len = strlen (command_line.rpath); 1048 size_t optarg_len = strlen (optarg); 1049 char *buf; 1050 char *cp = command_line.rpath; 1051 1052 /* First see whether OPTARG is already in the path. */ 1053 do 1054 { 1055 if (strncmp (optarg, cp, optarg_len) == 0 1056 && (cp[optarg_len] == 0 1057 || cp[optarg_len] == config.rpath_separator)) 1058 /* We found it. */ 1059 break; 1060 1061 /* Not yet found. */ 1062 cp = strchr (cp, config.rpath_separator); 1063 if (cp != NULL) 1064 ++cp; 1065 } 1066 while (cp != NULL); 1067 1068 if (cp == NULL) 1069 { 1070 buf = xmalloc (rpath_len + optarg_len + 2); 1071 sprintf (buf, "%s%c%s", command_line.rpath, 1072 config.rpath_separator, optarg); 1073 free (command_line.rpath); 1074 command_line.rpath = buf; 1075 } 1076 } 1077 break; 1078 case OPTION_RPATH_LINK: 1079 if (command_line.rpath_link == NULL) 1080 command_line.rpath_link = xstrdup (optarg); 1081 else 1082 { 1083 char *buf; 1084 1085 buf = xmalloc (strlen (command_line.rpath_link) 1086 + strlen (optarg) 1087 + 2); 1088 sprintf (buf, "%s%c%s", command_line.rpath_link, 1089 config.rpath_separator, optarg); 1090 free (command_line.rpath_link); 1091 command_line.rpath_link = buf; 1092 } 1093 break; 1094 case OPTION_RELAX: 1095 command_line.relax = TRUE; 1096 break; 1097 case OPTION_RETAIN_SYMBOLS_FILE: 1098 add_keepsyms_file (optarg); 1099 break; 1100 case 'S': 1101 link_info.strip = strip_debugger; 1102 break; 1103 case 's': 1104 link_info.strip = strip_all; 1105 break; 1106 case OPTION_STRIP_DISCARDED: 1107 link_info.strip_discarded = TRUE; 1108 break; 1109 case OPTION_NO_STRIP_DISCARDED: 1110 link_info.strip_discarded = FALSE; 1111 break; 1112 case OPTION_SHARED: 1113 if (config.has_shared) 1114 { 1115 link_info.shared = TRUE; 1116 /* When creating a shared library, the default 1117 behaviour is to ignore any unresolved references. */ 1118 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1119 link_info.unresolved_syms_in_objects = RM_IGNORE; 1120 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1121 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1122 } 1123 else 1124 einfo (_("%P%F: -shared not supported\n")); 1125 break; 1126 case OPTION_PIE: 1127 if (config.has_shared) 1128 { 1129 link_info.shared = TRUE; 1130 link_info.pie = TRUE; 1131 } 1132 else 1133 einfo (_("%P%F: -pie not supported\n")); 1134 break; 1135 case 'h': /* Used on Solaris. */ 1136 case OPTION_SONAME: 1137 command_line.soname = optarg; 1138 break; 1139 case OPTION_SORT_COMMON: 1140 config.sort_common = TRUE; 1141 break; 1142 case OPTION_SORT_SECTION: 1143 if (strcmp (optarg, N_("name")) == 0) 1144 sort_section = by_name; 1145 else if (strcmp (optarg, N_("alignment")) == 0) 1146 sort_section = by_alignment; 1147 else 1148 einfo (_("%P%F: invalid section sorting option: %s\n"), 1149 optarg); 1150 break; 1151 case OPTION_STATS: 1152 config.stats = TRUE; 1153 break; 1154 case OPTION_SYMBOLIC: 1155 command_line.symbolic = symbolic; 1156 break; 1157 case OPTION_SYMBOLIC_FUNCTIONS: 1158 command_line.symbolic = symbolic_functions; 1159 break; 1160 case 't': 1161 trace_files = TRUE; 1162 break; 1163 case 'T': 1164 ldfile_open_command_file (optarg); 1165 parser_input = input_script; 1166 yyparse (); 1167 break; 1168 case OPTION_DEFAULT_SCRIPT: 1169 command_line.default_script = optarg; 1170 break; 1171 case OPTION_SECTION_START: 1172 { 1173 char *optarg2; 1174 char *sec_name; 1175 int len; 1176 1177 /* Check for <something>=<somthing>... */ 1178 optarg2 = strchr (optarg, '='); 1179 if (optarg2 == NULL) 1180 einfo (_("%P%F: invalid argument to option" 1181 " \"--section-start\"\n")); 1182 1183 optarg2++; 1184 1185 /* So far so good. Are all the args present? */ 1186 if ((*optarg == '\0') || (*optarg2 == '\0')) 1187 einfo (_("%P%F: missing argument(s) to option" 1188 " \"--section-start\"\n")); 1189 1190 /* We must copy the section name as set_section_start 1191 doesn't do it for us. */ 1192 len = optarg2 - optarg; 1193 sec_name = xmalloc (len); 1194 memcpy (sec_name, optarg, len - 1); 1195 sec_name[len - 1] = 0; 1196 1197 /* Then set it... */ 1198 set_section_start (sec_name, optarg2); 1199 } 1200 break; 1201 case OPTION_TARGET_HELP: 1202 /* Mention any target specific options. */ 1203 ldemul_list_emulation_options (stdout); 1204 exit (0); 1205 case OPTION_TBSS: 1206 set_segment_start (".bss", optarg); 1207 break; 1208 case OPTION_TDATA: 1209 set_segment_start (".data", optarg); 1210 break; 1211 case OPTION_TTEXT: 1212 set_segment_start (".text", optarg); 1213 break; 1214 case OPTION_TRADITIONAL_FORMAT: 1215 link_info.traditional_format = TRUE; 1216 break; 1217 case OPTION_TASK_LINK: 1218 link_info.task_link = TRUE; 1219 /* Fall through - do an implied -r option. */ 1220 case OPTION_UR: 1221 link_info.relocatable = TRUE; 1222 config.build_constructors = TRUE; 1223 config.magic_demand_paged = FALSE; 1224 config.text_read_only = FALSE; 1225 config.dynamic_link = FALSE; 1226 break; 1227 case 'u': 1228 ldlang_add_undef (optarg); 1229 break; 1230 case OPTION_UNIQUE: 1231 if (optarg != NULL) 1232 lang_add_unique (optarg); 1233 else 1234 config.unique_orphan_sections = TRUE; 1235 break; 1236 case OPTION_VERBOSE: 1237 ldversion (1); 1238 version_printed = TRUE; 1239 trace_file_tries = TRUE; 1240 overflow_cutoff_limit = -2; 1241 break; 1242 case 'v': 1243 ldversion (0); 1244 version_printed = TRUE; 1245 break; 1246 case 'V': 1247 ldversion (1); 1248 version_printed = TRUE; 1249 break; 1250 case OPTION_VERSION: 1251 ldversion (2); 1252 xexit (0); 1253 break; 1254 case OPTION_VERSION_SCRIPT: 1255 /* This option indicates a small script that only specifies 1256 version information. Read it, but don't assume that 1257 we've seen a linker script. */ 1258 { 1259 FILE *hold_script_handle; 1260 1261 hold_script_handle = saved_script_handle; 1262 ldfile_open_command_file (optarg); 1263 saved_script_handle = hold_script_handle; 1264 parser_input = input_version_script; 1265 yyparse (); 1266 } 1267 break; 1268 case OPTION_VERSION_EXPORTS_SECTION: 1269 /* This option records a version symbol to be applied to the 1270 symbols listed for export to be found in the object files 1271 .exports sections. */ 1272 command_line.version_exports_section = optarg; 1273 break; 1274 case OPTION_DYNAMIC_LIST_DATA: 1275 command_line.dynamic_list = dynamic_list_data; 1276 if (command_line.symbolic == symbolic) 1277 command_line.symbolic = symbolic_unset; 1278 break; 1279 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1280 lang_append_dynamic_list_cpp_typeinfo (); 1281 if (command_line.dynamic_list != dynamic_list_data) 1282 command_line.dynamic_list = dynamic_list; 1283 if (command_line.symbolic == symbolic) 1284 command_line.symbolic = symbolic_unset; 1285 break; 1286 case OPTION_DYNAMIC_LIST_CPP_NEW: 1287 lang_append_dynamic_list_cpp_new (); 1288 if (command_line.dynamic_list != dynamic_list_data) 1289 command_line.dynamic_list = dynamic_list; 1290 if (command_line.symbolic == symbolic) 1291 command_line.symbolic = symbolic_unset; 1292 break; 1293 case OPTION_DYNAMIC_LIST: 1294 /* This option indicates a small script that only specifies 1295 a dynamic list. Read it, but don't assume that we've 1296 seen a linker script. */ 1297 { 1298 FILE *hold_script_handle; 1299 1300 hold_script_handle = saved_script_handle; 1301 ldfile_open_command_file (optarg); 1302 saved_script_handle = hold_script_handle; 1303 parser_input = input_dynamic_list; 1304 yyparse (); 1305 } 1306 if (command_line.dynamic_list != dynamic_list_data) 1307 command_line.dynamic_list = dynamic_list; 1308 if (command_line.symbolic == symbolic) 1309 command_line.symbolic = symbolic_unset; 1310 break; 1311 case OPTION_WARN_COMMON: 1312 config.warn_common = TRUE; 1313 break; 1314 case OPTION_WARN_CONSTRUCTORS: 1315 config.warn_constructors = TRUE; 1316 break; 1317 case OPTION_WARN_FATAL: 1318 config.fatal_warnings = TRUE; 1319 break; 1320 case OPTION_WARN_MULTIPLE_GP: 1321 config.warn_multiple_gp = TRUE; 1322 break; 1323 case OPTION_WARN_ONCE: 1324 config.warn_once = TRUE; 1325 break; 1326 case OPTION_WARN_SECTION_ALIGN: 1327 config.warn_section_align = TRUE; 1328 break; 1329 case OPTION_WARN_SHARED_TEXTREL: 1330 link_info.warn_shared_textrel = TRUE; 1331 break; 1332 case OPTION_WHOLE_ARCHIVE: 1333 whole_archive = TRUE; 1334 break; 1335 case OPTION_ADD_NEEDED: 1336 add_needed = TRUE; 1337 break; 1338 case OPTION_NO_ADD_NEEDED: 1339 add_needed = FALSE; 1340 break; 1341 case OPTION_AS_NEEDED: 1342/* XXX: --as-needed is broken on powerpc64 */ 1343#ifndef __powerpc64__ 1344 as_needed = TRUE; 1345 break; 1346#endif 1347 case OPTION_NO_AS_NEEDED: 1348 as_needed = FALSE; 1349 break; 1350 case OPTION_WRAP: 1351 add_wrap (optarg); 1352 break; 1353 case OPTION_DISCARD_NONE: 1354 link_info.discard = discard_none; 1355 break; 1356 case 'X': 1357 link_info.discard = discard_l; 1358 break; 1359 case 'x': 1360 link_info.discard = discard_all; 1361 break; 1362 case 'Y': 1363 if (CONST_STRNEQ (optarg, "P,")) 1364 optarg += 2; 1365 if (default_dirlist != NULL) 1366 free (default_dirlist); 1367 default_dirlist = xstrdup (optarg); 1368 break; 1369 case 'y': 1370 add_ysym (optarg); 1371 break; 1372 case OPTION_SPARE_DYNAMIC_TAGS: 1373 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1374 break; 1375 case OPTION_SPLIT_BY_RELOC: 1376 if (optarg != NULL) 1377 config.split_by_reloc = strtoul (optarg, NULL, 0); 1378 else 1379 config.split_by_reloc = 32768; 1380 break; 1381 case OPTION_SPLIT_BY_FILE: 1382 if (optarg != NULL) 1383 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1384 else 1385 config.split_by_file = 1; 1386 break; 1387 case OPTION_CHECK_SECTIONS: 1388 command_line.check_section_addresses = TRUE; 1389 break; 1390 case OPTION_NO_CHECK_SECTIONS: 1391 command_line.check_section_addresses = FALSE; 1392 break; 1393 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1394 command_line.accept_unknown_input_arch = TRUE; 1395 break; 1396 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1397 command_line.accept_unknown_input_arch = FALSE; 1398 break; 1399 case '(': 1400 if (ingroup) 1401 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1402 1403 lang_enter_group (); 1404 ingroup = 1; 1405 break; 1406 case ')': 1407 if (! ingroup) 1408 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1409 1410 lang_leave_group (); 1411 ingroup = 0; 1412 break; 1413 1414 case OPTION_INIT: 1415 link_info.init_function = optarg; 1416 break; 1417 1418 case OPTION_FINI: 1419 link_info.fini_function = optarg; 1420 break; 1421 1422 case OPTION_REDUCE_MEMORY_OVERHEADS: 1423 link_info.reduce_memory_overheads = TRUE; 1424 if (config.hash_table_size == 0) 1425 config.hash_table_size = 1021; 1426 break; 1427 1428 case OPTION_HASH_SIZE: 1429 { 1430 bfd_size_type new_size; 1431 1432 new_size = strtoul (optarg, NULL, 0); 1433 if (new_size) 1434 config.hash_table_size = new_size; 1435 else 1436 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1437 } 1438 break; 1439 } 1440 } 1441 1442 if (ingroup) 1443 lang_leave_group (); 1444 1445 if (default_dirlist != NULL) 1446 { 1447 set_default_dirlist (default_dirlist); 1448 free (default_dirlist); 1449 } 1450 1451 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1452 /* FIXME: Should we allow emulations a chance to set this ? */ 1453 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1454 1455 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1456 /* FIXME: Should we allow emulations a chance to set this ? */ 1457 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1458} 1459 1460/* Add the (colon-separated) elements of DIRLIST_PTR to the 1461 library search path. */ 1462 1463static void 1464set_default_dirlist (char *dirlist_ptr) 1465{ 1466 char *p; 1467 1468 while (1) 1469 { 1470 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1471 if (p != NULL) 1472 *p = '\0'; 1473 if (*dirlist_ptr != '\0') 1474 ldfile_add_library_path (dirlist_ptr, TRUE); 1475 if (p == NULL) 1476 break; 1477 dirlist_ptr = p + 1; 1478 } 1479} 1480 1481static void 1482set_section_start (char *sect, char *valstr) 1483{ 1484 const char *end; 1485 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1486 if (*end) 1487 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1488 lang_section_start (sect, exp_intop (val), NULL); 1489} 1490 1491static void 1492set_segment_start (const char *section, char *valstr) 1493{ 1494 const char *name; 1495 const char *end; 1496 segment_type *seg; 1497 1498 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1499 if (*end) 1500 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1501 /* If we already have an entry for this segment, update the existing 1502 value. */ 1503 name = section + 1; 1504 for (seg = segments; seg; seg = seg->next) 1505 if (strcmp (seg->name, name) == 0) 1506 { 1507 seg->value = val; 1508 return; 1509 } 1510 /* There was no existing value so we must create a new segment 1511 entry. */ 1512 seg = stat_alloc (sizeof (*seg)); 1513 seg->name = name; 1514 seg->value = val; 1515 seg->used = FALSE; 1516 /* Add it to the linked list of segments. */ 1517 seg->next = segments; 1518 segments = seg; 1519 /* Historically, -Ttext and friends set the base address of a 1520 particular section. For backwards compatibility, we still do 1521 that. If a SEGMENT_START directive is seen, the section address 1522 assignment will be disabled. */ 1523 lang_section_start (section, exp_intop (val), seg); 1524} 1525 1526 1527/* Print help messages for the options. */ 1528 1529static void 1530help (void) 1531{ 1532 unsigned i; 1533 const char **targets, **pp; 1534 int len; 1535 1536 printf (_("Usage: %s [options] file...\n"), program_name); 1537 1538 printf (_("Options:\n")); 1539 for (i = 0; i < OPTION_COUNT; i++) 1540 { 1541 if (ld_options[i].doc != NULL) 1542 { 1543 bfd_boolean comma; 1544 unsigned j; 1545 1546 printf (" "); 1547 1548 comma = FALSE; 1549 len = 2; 1550 1551 j = i; 1552 do 1553 { 1554 if (ld_options[j].shortopt != '\0' 1555 && ld_options[j].control != NO_HELP) 1556 { 1557 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1558 len += (comma ? 2 : 0) + 2; 1559 if (ld_options[j].arg != NULL) 1560 { 1561 if (ld_options[j].opt.has_arg != optional_argument) 1562 { 1563 printf (" "); 1564 ++len; 1565 } 1566 printf ("%s", _(ld_options[j].arg)); 1567 len += strlen (_(ld_options[j].arg)); 1568 } 1569 comma = TRUE; 1570 } 1571 ++j; 1572 } 1573 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1574 1575 j = i; 1576 do 1577 { 1578 if (ld_options[j].opt.name != NULL 1579 && ld_options[j].control != NO_HELP) 1580 { 1581 int two_dashes = 1582 (ld_options[j].control == TWO_DASHES 1583 || ld_options[j].control == EXACTLY_TWO_DASHES); 1584 1585 printf ("%s-%s%s", 1586 comma ? ", " : "", 1587 two_dashes ? "-" : "", 1588 ld_options[j].opt.name); 1589 len += ((comma ? 2 : 0) 1590 + 1 1591 + (two_dashes ? 1 : 0) 1592 + strlen (ld_options[j].opt.name)); 1593 if (ld_options[j].arg != NULL) 1594 { 1595 printf (" %s", _(ld_options[j].arg)); 1596 len += 1 + strlen (_(ld_options[j].arg)); 1597 } 1598 comma = TRUE; 1599 } 1600 ++j; 1601 } 1602 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1603 1604 if (len >= 30) 1605 { 1606 printf ("\n"); 1607 len = 0; 1608 } 1609 1610 for (; len < 30; len++) 1611 putchar (' '); 1612 1613 printf ("%s\n", _(ld_options[i].doc)); 1614 } 1615 } 1616 printf (_(" @FILE")); 1617 for (len = strlen (" @FILE"); len < 30; len++) 1618 putchar (' '); 1619 printf (_("Read options from FILE\n")); 1620 1621 /* Note: Various tools (such as libtool) depend upon the 1622 format of the listings below - do not change them. */ 1623 /* xgettext:c-format */ 1624 printf (_("%s: supported targets:"), program_name); 1625 targets = bfd_target_list (); 1626 for (pp = targets; *pp != NULL; pp++) 1627 printf (" %s", *pp); 1628 free (targets); 1629 printf ("\n"); 1630 1631 /* xgettext:c-format */ 1632 printf (_("%s: supported emulations: "), program_name); 1633 ldemul_list_emulations (stdout); 1634 printf ("\n"); 1635 1636 /* xgettext:c-format */ 1637 printf (_("%s: emulation specific options:\n"), program_name); 1638 ldemul_list_emulation_options (stdout); 1639 printf ("\n"); 1640 1641 if (REPORT_BUGS_TO[0]) 1642 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1643} 1644