lexsup.c revision 1.2
1 /* Parse options for the GNU linker. 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004, 2005, 2006, 2007 4 Free Software Foundation, Inc. 5 6 This file is part of the GNU Binutils. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21 MA 02110-1301, USA. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "bfdver.h" 26 #include "libiberty.h" 27 #include <stdio.h> 28 #include <string.h> 29 #include "safe-ctype.h" 30 #include "getopt.h" 31 #include "bfdlink.h" 32 #include "ld.h" 33 #include "ldmain.h" 34 #include "ldmisc.h" 35 #include "ldexp.h" 36 #include "ldlang.h" 37 #include <ldgram.h> 38 #include "ldlex.h" 39 #include "ldfile.h" 40 #include "ldver.h" 41 #include "ldemul.h" 42 #include "demangle.h" 43 44 #ifndef PATH_SEPARATOR 45 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 46 #define PATH_SEPARATOR ';' 47 #else 48 #define PATH_SEPARATOR ':' 49 #endif 50 #endif 51 52 /* Somewhere above, sys/stat.h got included . . . . */ 53 #if !defined(S_ISDIR) && defined(S_IFDIR) 54 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 55 #endif 56 57 static void set_default_dirlist (char *); 58 static void set_section_start (char *, char *); 59 static void set_segment_start (const char *, char *); 60 static void help (void); 61 62 /* Non-zero if we are processing a --defsym from the command line. */ 63 int parsing_defsym = 0; 64 65 /* Codes used for the long options with no short synonyms. 150 isn't 66 special; it's just an arbitrary non-ASCII char value. */ 67 enum option_values 68 { 69 OPTION_ASSERT = 150, 70 OPTION_CALL_SHARED, 71 OPTION_CREF, 72 OPTION_DEFSYM, 73 OPTION_DEMANGLE, 74 OPTION_DYNAMIC_LINKER, 75 OPTION_SYSROOT, 76 OPTION_EB, 77 OPTION_EL, 78 OPTION_EMBEDDED_RELOCS, 79 OPTION_EXPORT_DYNAMIC, 80 OPTION_HELP, 81 OPTION_IGNORE, 82 OPTION_MAP, 83 OPTION_NO_DEMANGLE, 84 OPTION_NO_KEEP_MEMORY, 85 OPTION_NO_WARN_MISMATCH, 86 OPTION_NO_WARN_SEARCH_MISMATCH, 87 OPTION_NOINHIBIT_EXEC, 88 OPTION_NON_SHARED, 89 OPTION_NO_WHOLE_ARCHIVE, 90 OPTION_OFORMAT, 91 OPTION_RELAX, 92 OPTION_RETAIN_SYMBOLS_FILE, 93 OPTION_RPATH, 94 OPTION_RPATH_LINK, 95 OPTION_SHARED, 96 OPTION_SONAME, 97 OPTION_SORT_COMMON, 98 OPTION_SORT_SECTION, 99 OPTION_STATS, 100 OPTION_SYMBOLIC, 101 OPTION_SYMBOLIC_FUNCTIONS, 102 OPTION_TASK_LINK, 103 OPTION_TBSS, 104 OPTION_TDATA, 105 OPTION_TTEXT, 106 OPTION_TRADITIONAL_FORMAT, 107 OPTION_UR, 108 OPTION_VERBOSE, 109 OPTION_VERSION, 110 OPTION_VERSION_SCRIPT, 111 OPTION_VERSION_EXPORTS_SECTION, 112 OPTION_DYNAMIC_LIST, 113 OPTION_DYNAMIC_LIST_CPP_NEW, 114 OPTION_DYNAMIC_LIST_CPP_TYPEINFO, 115 OPTION_DYNAMIC_LIST_DATA, 116 OPTION_WARN_COMMON, 117 OPTION_WARN_CONSTRUCTORS, 118 OPTION_WARN_FATAL, 119 OPTION_NO_WARN_FATAL, 120 OPTION_WARN_MULTIPLE_GP, 121 OPTION_WARN_ONCE, 122 OPTION_WARN_SECTION_ALIGN, 123 OPTION_SPLIT_BY_RELOC, 124 OPTION_SPLIT_BY_FILE , 125 OPTION_WHOLE_ARCHIVE, 126 OPTION_ADD_NEEDED, 127 OPTION_NO_ADD_NEEDED, 128 OPTION_AS_NEEDED, 129 OPTION_NO_AS_NEEDED, 130 OPTION_WRAP, 131 OPTION_FORCE_EXE_SUFFIX, 132 OPTION_GC_SECTIONS, 133 OPTION_NO_GC_SECTIONS, 134 OPTION_PRINT_GC_SECTIONS, 135 OPTION_NO_PRINT_GC_SECTIONS, 136 OPTION_HASH_SIZE, 137 OPTION_CHECK_SECTIONS, 138 OPTION_NO_CHECK_SECTIONS, 139 OPTION_NO_UNDEFINED, 140 OPTION_INIT, 141 OPTION_FINI, 142 OPTION_SECTION_START, 143 OPTION_UNIQUE, 144 OPTION_TARGET_HELP, 145 OPTION_ALLOW_SHLIB_UNDEFINED, 146 OPTION_NO_ALLOW_SHLIB_UNDEFINED, 147 OPTION_ALLOW_MULTIPLE_DEFINITION, 148 OPTION_NO_UNDEFINED_VERSION, 149 OPTION_DEFAULT_SYMVER, 150 OPTION_DEFAULT_IMPORTED_SYMVER, 151 OPTION_DISCARD_NONE, 152 OPTION_SPARE_DYNAMIC_TAGS, 153 OPTION_NO_DEFINE_COMMON, 154 OPTION_NOSTDLIB, 155 OPTION_NO_OMAGIC, 156 OPTION_STRIP_DISCARDED, 157 OPTION_NO_STRIP_DISCARDED, 158 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, 159 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, 160 OPTION_PIE, 161 OPTION_UNRESOLVED_SYMBOLS, 162 OPTION_WARN_UNRESOLVED_SYMBOLS, 163 OPTION_ERROR_UNRESOLVED_SYMBOLS, 164 OPTION_WARN_SHARED_TEXTREL, 165 OPTION_REDUCE_MEMORY_OVERHEADS, 166 OPTION_DEFAULT_SCRIPT, 167 OPTION_IGNORE_UNRESOLVED_SYMBOL 168 }; 169 170 /* The long options. This structure is used for both the option 171 parsing and the help text. */ 172 173 struct ld_option 174 { 175 /* The long option information. */ 176 struct option opt; 177 /* The short option with the same meaning ('\0' if none). */ 178 char shortopt; 179 /* The name of the argument (NULL if none). */ 180 const char *arg; 181 /* The documentation string. If this is NULL, this is a synonym for 182 the previous option. */ 183 const char *doc; 184 enum { 185 /* Use one dash before long option name. */ 186 ONE_DASH, 187 /* Use two dashes before long option name. */ 188 TWO_DASHES, 189 /* Only accept two dashes before the long option name. 190 This is an overloading of the use of this enum, since originally it 191 was only intended to tell the --help display function how to display 192 the long option name. This feature was added in order to resolve 193 the confusion about the -omagic command line switch. Is it setting 194 the output file name to "magic" or is it setting the NMAGIC flag on 195 the output ? It has been decided that it is setting the output file 196 name, and that if you want to set the NMAGIC flag you should use -N 197 or --omagic. */ 198 EXACTLY_TWO_DASHES, 199 /* Don't mention this option in --help output. */ 200 NO_HELP 201 } control; 202 }; 203 204 static const struct ld_option ld_options[] = 205 { 206 { {NULL, required_argument, NULL, '\0'}, 207 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 208 ONE_DASH }, 209 { {"architecture", required_argument, NULL, 'A'}, 210 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 211 { {"format", required_argument, NULL, 'b'}, 212 'b', N_("TARGET"), N_("Specify target for following input files"), 213 TWO_DASHES }, 214 { {"mri-script", required_argument, NULL, 'c'}, 215 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 216 { {"dc", no_argument, NULL, 'd'}, 217 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 218 { {"dp", no_argument, NULL, 'd'}, 219 '\0', NULL, NULL, ONE_DASH }, 220 { {"entry", required_argument, NULL, 'e'}, 221 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 222 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 223 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 224 { {"EB", no_argument, NULL, OPTION_EB}, 225 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 226 { {"EL", no_argument, NULL, OPTION_EL}, 227 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 228 { {"auxiliary", required_argument, NULL, 'f'}, 229 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 230 TWO_DASHES }, 231 { {"filter", required_argument, NULL, 'F'}, 232 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 233 TWO_DASHES }, 234 { {NULL, no_argument, NULL, '\0'}, 235 'g', NULL, N_("Ignored"), ONE_DASH }, 236 { {"gpsize", required_argument, NULL, 'G'}, 237 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 238 TWO_DASHES }, 239 { {"soname", required_argument, NULL, OPTION_SONAME}, 240 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 241 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 242 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 243 TWO_DASHES }, 244 { {"library", required_argument, NULL, 'l'}, 245 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 246 { {"library-path", required_argument, NULL, 'L'}, 247 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 248 TWO_DASHES }, 249 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 250 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 251 { {NULL, required_argument, NULL, '\0'}, 252 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 253 { {"print-map", no_argument, NULL, 'M'}, 254 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 255 { {"nmagic", no_argument, NULL, 'n'}, 256 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 257 { {"omagic", no_argument, NULL, 'N'}, 258 'N', NULL, N_("Do not page align data, do not make text readonly"), 259 EXACTLY_TWO_DASHES }, 260 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 261 '\0', NULL, N_("Page align data, make text readonly"), 262 EXACTLY_TWO_DASHES }, 263 { {"output", required_argument, NULL, 'o'}, 264 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 265 { {NULL, required_argument, NULL, '\0'}, 266 'O', NULL, N_("Optimize output file"), ONE_DASH }, 267 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 268 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 269 { {"emit-relocs", no_argument, NULL, 'q'}, 270 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 271 { {"relocatable", no_argument, NULL, 'r'}, 272 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 273 { {NULL, no_argument, NULL, '\0'}, 274 'i', NULL, NULL, ONE_DASH }, 275 { {"just-symbols", required_argument, NULL, 'R'}, 276 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 277 TWO_DASHES }, 278 { {"strip-all", no_argument, NULL, 's'}, 279 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 280 { {"strip-debug", no_argument, NULL, 'S'}, 281 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 282 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 283 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 284 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 285 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 286 { {"trace", no_argument, NULL, 't'}, 287 't', NULL, N_("Trace file opens"), TWO_DASHES }, 288 { {"script", required_argument, NULL, 'T'}, 289 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 290 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 291 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 292 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 293 '\0', NULL, NULL, ONE_DASH }, 294 { {"undefined", required_argument, NULL, 'u'}, 295 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 296 TWO_DASHES }, 297 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 298 '\0', N_("[=SECTION]"), 299 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 300 { {"Ur", no_argument, NULL, OPTION_UR}, 301 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 302 { {"version", no_argument, NULL, OPTION_VERSION}, 303 'v', NULL, N_("Print version information"), TWO_DASHES }, 304 { {NULL, no_argument, NULL, '\0'}, 305 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 306 { {"discard-all", no_argument, NULL, 'x'}, 307 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 308 { {"discard-locals", no_argument, NULL, 'X'}, 309 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 310 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 311 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 312 { {"trace-symbol", required_argument, NULL, 'y'}, 313 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 314 { {NULL, required_argument, NULL, '\0'}, 315 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 316 ONE_DASH }, 317 { {"start-group", no_argument, NULL, '('}, 318 '(', NULL, N_("Start a group"), TWO_DASHES }, 319 { {"end-group", no_argument, NULL, ')'}, 320 ')', NULL, N_("End a group"), TWO_DASHES }, 321 { {"accept-unknown-input-arch", no_argument, NULL, 322 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 323 '\0', NULL, 324 N_("Accept input files whose architecture cannot be determined"), 325 TWO_DASHES }, 326 { {"no-accept-unknown-input-arch", no_argument, NULL, 327 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 328 '\0', NULL, N_("Reject input files whose architecture is unknown"), 329 TWO_DASHES }, 330 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED}, 331 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n" 332 " following dynamic libs"), 333 TWO_DASHES }, 334 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED}, 335 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n" 336 " in following dynamic libs"), 337 TWO_DASHES }, 338 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 339 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 340 TWO_DASHES }, 341 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 342 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), 343 TWO_DASHES }, 344 { {"assert", required_argument, NULL, OPTION_ASSERT}, 345 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 346 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 347 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 348 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 349 '\0', NULL, NULL, ONE_DASH }, 350 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 351 '\0', NULL, NULL, ONE_DASH }, 352 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 353 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 354 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 355 '\0', NULL, NULL, ONE_DASH }, 356 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 357 '\0', NULL, NULL, ONE_DASH }, 358 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 359 '\0', NULL, NULL, ONE_DASH }, 360 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 361 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 362 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 363 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 364 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 365 '\0', NULL, N_("Check section addresses for overlaps (default)"), 366 TWO_DASHES }, 367 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 368 '\0', NULL, N_("Do not check section addresses for overlaps"), 369 TWO_DASHES }, 370 { {"cref", no_argument, NULL, OPTION_CREF}, 371 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 372 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 373 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 374 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 375 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 376 TWO_DASHES }, 377 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 378 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 379 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 380 '\0', NULL, N_("Treat warnings as errors"), 381 TWO_DASHES }, 382 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 383 '\0', NULL, N_("Do not treat warnings as errors (default)"), 384 TWO_DASHES }, 385 { {"fini", required_argument, NULL, OPTION_FINI}, 386 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 387 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 388 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 389 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 390 '\0', NULL, N_("Remove unused sections (on some targets)"), 391 TWO_DASHES }, 392 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 393 '\0', NULL, N_("Don't remove unused sections (default)"), 394 TWO_DASHES }, 395 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 396 '\0', NULL, N_("List removed unused sections on stderr"), 397 TWO_DASHES }, 398 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 399 '\0', NULL, N_("Do not list removed unused sections"), 400 TWO_DASHES }, 401 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 402 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 403 TWO_DASHES }, 404 { {"help", no_argument, NULL, OPTION_HELP}, 405 '\0', NULL, N_("Print option help"), TWO_DASHES }, 406 { {"init", required_argument, NULL, OPTION_INIT}, 407 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 408 { {"Map", required_argument, NULL, OPTION_MAP}, 409 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 410 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 411 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 412 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 413 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 414 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 415 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 416 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 417 '\0', NULL, N_("Do not allow unresolved references in object files"), 418 TWO_DASHES }, 419 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 420 '\0', NULL, N_("Allow unresolved references in shared libaries"), 421 TWO_DASHES }, 422 { {"no-allow-shlib-undefined", no_argument, NULL, 423 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 424 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 425 TWO_DASHES }, 426 { {"allow-multiple-definition", no_argument, NULL, 427 OPTION_ALLOW_MULTIPLE_DEFINITION}, 428 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 429 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 430 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 431 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 432 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 433 { {"default-imported-symver", no_argument, NULL, 434 OPTION_DEFAULT_IMPORTED_SYMVER}, 435 '\0', NULL, N_("Create default symbol version for imported symbols"), 436 TWO_DASHES }, 437 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 438 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 439 { {"no-warn-search-mismatch", no_argument, NULL, 440 OPTION_NO_WARN_SEARCH_MISMATCH}, 441 '\0', NULL, N_("Don't warn on finding an incompatible library"), 442 TWO_DASHES}, 443 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 444 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 445 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 446 '\0', NULL, N_("Create an output file even if errors occur"), 447 TWO_DASHES }, 448 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 449 '\0', NULL, NULL, NO_HELP }, 450 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 451 '\0', NULL, N_("Only use library directories specified on\n" 452 " the command line"), 453 ONE_DASH }, 454 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 455 '\0', N_("TARGET"), N_("Specify target of output file"), 456 EXACTLY_TWO_DASHES }, 457 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 458 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 459 { {"reduce-memory-overheads", no_argument, NULL, 460 OPTION_REDUCE_MEMORY_OVERHEADS}, 461 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 462 TWO_DASHES }, 463 { {"relax", no_argument, NULL, OPTION_RELAX}, 464 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 465 { {"retain-symbols-file", required_argument, NULL, 466 OPTION_RETAIN_SYMBOLS_FILE}, 467 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 468 { {"rpath", required_argument, NULL, OPTION_RPATH}, 469 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 470 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 471 '\0', N_("PATH"), N_("Set link time shared library search path"), 472 ONE_DASH }, 473 { {"shared", no_argument, NULL, OPTION_SHARED}, 474 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 475 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD, NetBSD. */ 476 '\0', NULL, NULL, ONE_DASH }, 477 { {"pie", no_argument, NULL, OPTION_PIE}, 478 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 479 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 480 '\0', NULL, NULL, TWO_DASHES }, 481 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 482 '\0', N_("[=ascending|descending]"), 483 N_("Sort common symbols by alignment [in specified order]"), 484 TWO_DASHES }, 485 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 486 '\0', NULL, NULL, NO_HELP }, 487 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 488 '\0', N_("name|alignment"), 489 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 490 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 491 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 492 TWO_DASHES }, 493 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 494 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 495 TWO_DASHES }, 496 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 497 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 498 TWO_DASHES }, 499 { {"stats", no_argument, NULL, OPTION_STATS}, 500 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 501 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 502 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 503 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 504 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 505 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 506 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 507 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 508 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 509 TWO_DASHES }, 510 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 511 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 512 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 513 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 514 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 515 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 516 { {"unresolved-symbols=<method>", required_argument, NULL, 517 OPTION_UNRESOLVED_SYMBOLS}, 518 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 519 " ignore-all, report-all, ignore-in-object-files,\n" 520 " ignore-in-shared-libs"), 521 TWO_DASHES }, 522 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 523 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 524 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 525 '\0', NULL, NULL, NO_HELP }, 526 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 527 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 528 { {"version-exports-section", required_argument, NULL, 529 OPTION_VERSION_EXPORTS_SECTION }, 530 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 531 " SYMBOL as the version."), 532 TWO_DASHES }, 533 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 534 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 535 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 536 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 537 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 538 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 539 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 540 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 541 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 542 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 543 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 544 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 545 TWO_DASHES }, 546 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 547 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 548 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 549 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 550 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 551 '\0', NULL, N_("Warn if start of section changes due to alignment"), 552 TWO_DASHES }, 553 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 554 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 555 TWO_DASHES }, 556 { {"warn-unresolved-symbols", no_argument, NULL, 557 OPTION_WARN_UNRESOLVED_SYMBOLS}, 558 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 559 { {"error-unresolved-symbols", no_argument, NULL, 560 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 561 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 562 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 563 '\0', NULL, N_("Include all objects from following archives"), 564 TWO_DASHES }, 565 { {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 566 '\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */ 567 { {"wrap", required_argument, NULL, OPTION_WRAP}, 568 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 569 { {"ignore-unresolved-symbol", required_argument, NULL, 570 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 571 '\0', N_("SYMBOL"), 572 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 573 }; 574 575 #define OPTION_COUNT ARRAY_SIZE (ld_options) 576 577 void 578 parse_args (unsigned argc, char **argv) 579 { 580 unsigned i; 581 int is, il, irl; 582 int ingroup = 0; 583 char *default_dirlist = NULL; 584 char *shortopts; 585 struct option *longopts; 586 struct option *really_longopts; 587 int last_optind; 588 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 589 590 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 591 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 592 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 593 594 /* Starting the short option string with '-' is for programs that 595 expect options and other ARGV-elements in any order and that care about 596 the ordering of the two. We describe each non-option ARGV-element 597 as if it were the argument of an option with character code 1. */ 598 shortopts[0] = '-'; 599 is = 1; 600 il = 0; 601 irl = 0; 602 for (i = 0; i < OPTION_COUNT; i++) 603 { 604 if (ld_options[i].shortopt != '\0') 605 { 606 shortopts[is] = ld_options[i].shortopt; 607 ++is; 608 if (ld_options[i].opt.has_arg == required_argument 609 || ld_options[i].opt.has_arg == optional_argument) 610 { 611 shortopts[is] = ':'; 612 ++is; 613 if (ld_options[i].opt.has_arg == optional_argument) 614 { 615 shortopts[is] = ':'; 616 ++is; 617 } 618 } 619 } 620 if (ld_options[i].opt.name != NULL) 621 { 622 if (ld_options[i].control == EXACTLY_TWO_DASHES) 623 { 624 really_longopts[irl] = ld_options[i].opt; 625 ++irl; 626 } 627 else 628 { 629 longopts[il] = ld_options[i].opt; 630 ++il; 631 } 632 } 633 } 634 shortopts[is] = '\0'; 635 longopts[il].name = NULL; 636 really_longopts[irl].name = NULL; 637 638 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 639 640 /* The -G option is ambiguous on different platforms. Sometimes it 641 specifies the largest data size to put into the small data 642 section. Sometimes it is equivalent to --shared. Unfortunately, 643 the first form takes an argument, while the second does not. 644 645 We need to permit the --shared form because on some platforms, 646 such as Solaris, gcc -shared will pass -G to the linker. 647 648 To permit either usage, we look through the argument list. If we 649 find -G not followed by a number, we change it into --shared. 650 This will work for most normal cases. */ 651 for (i = 1; i < argc; i++) 652 if (strcmp (argv[i], "-G") == 0 653 && (i + 1 >= argc 654 || ! ISDIGIT (argv[i + 1][0]))) 655 argv[i] = (char *) "--shared"; 656 657 /* Because we permit long options to start with a single dash, and 658 we have a --library option, and the -l option is conventionally 659 used with an immediately following argument, we can have bad 660 results if somebody tries to use -l with a library whose name 661 happens to start with "ibrary", as in -li. We avoid problems by 662 simply turning -l into --library. This means that users will 663 have to use two dashes in order to use --library, which is OK 664 since that's how it is documented. 665 666 FIXME: It's possible that this problem can arise for other short 667 options as well, although the user does always have the recourse 668 of adding a space between the option and the argument. */ 669 for (i = 1; i < argc; i++) 670 { 671 if (argv[i][0] == '-' 672 && argv[i][1] == 'l' 673 && argv[i][2] != '\0') 674 { 675 char *n; 676 677 n = xmalloc (strlen (argv[i]) + 20); 678 sprintf (n, "--library=%s", argv[i] + 2); 679 argv[i] = n; 680 } 681 } 682 683 last_optind = -1; 684 while (1) 685 { 686 int longind; 687 int optc; 688 689 /* Using last_optind lets us avoid calling ldemul_parse_args 690 multiple times on a single option, which would lead to 691 confusion in the internal static variables maintained by 692 getopt. This could otherwise happen for an argument like 693 -nx, in which the -n is parsed as a single option, and we 694 loop around to pick up the -x. */ 695 if (optind != last_optind) 696 if (ldemul_parse_args (argc, argv)) 697 continue; 698 699 /* getopt_long_only is like getopt_long, but '-' as well as '--' 700 can indicate a long option. */ 701 opterr = 0; 702 last_optind = optind; 703 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 704 if (optc == '?') 705 { 706 optind = last_optind; 707 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 708 } 709 710 if (ldemul_handle_option (optc)) 711 continue; 712 713 if (optc == -1) 714 break; 715 716 switch (optc) 717 { 718 case '?': 719 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 720 /* Fall through. */ 721 722 default: 723 einfo (_("%P%F: use the --help option for usage information\n")); 724 725 case 1: /* File name. */ 726 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 727 break; 728 729 case OPTION_IGNORE: 730 break; 731 case 'a': 732 /* For HP/UX compatibility. Actually -a shared should mean 733 ``use only shared libraries'' but, then, we don't 734 currently support shared libraries on HP/UX anyhow. */ 735 if (strcmp (optarg, "archive") == 0) 736 config.dynamic_link = FALSE; 737 else if (strcmp (optarg, "shared") == 0 738 || strcmp (optarg, "default") == 0) 739 config.dynamic_link = TRUE; 740 else 741 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 742 break; 743 case OPTION_ASSERT: 744 /* FIXME: We just ignore these, but we should handle them. */ 745 if (strcmp (optarg, "definitions") == 0) 746 ; 747 else if (strcmp (optarg, "nodefinitions") == 0) 748 ; 749 else if (strcmp (optarg, "nosymbolic") == 0) 750 ; 751 else if (strcmp (optarg, "pure-text") == 0) 752 ; 753 else 754 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 755 break; 756 case 'A': 757 ldfile_add_arch (optarg); 758 break; 759 case 'b': 760 lang_add_target (optarg); 761 break; 762 case 'c': 763 ldfile_open_command_file (optarg); 764 parser_input = input_mri_script; 765 yyparse (); 766 break; 767 case OPTION_CALL_SHARED: 768 config.dynamic_link = TRUE; 769 break; 770 case OPTION_NON_SHARED: 771 config.dynamic_link = FALSE; 772 break; 773 case OPTION_CREF: 774 command_line.cref = TRUE; 775 link_info.notice_all = TRUE; 776 break; 777 case 'd': 778 command_line.force_common_definition = TRUE; 779 break; 780 case OPTION_DEFSYM: 781 lex_string = optarg; 782 lex_redirect (optarg); 783 parser_input = input_defsym; 784 parsing_defsym = 1; 785 yyparse (); 786 parsing_defsym = 0; 787 lex_string = NULL; 788 break; 789 case OPTION_DEMANGLE: 790 demangling = TRUE; 791 if (optarg != NULL) 792 { 793 enum demangling_styles style; 794 795 style = cplus_demangle_name_to_style (optarg); 796 if (style == unknown_demangling) 797 einfo (_("%F%P: unknown demangling style `%s'"), 798 optarg); 799 800 cplus_demangle_set_style (style); 801 } 802 break; 803 case 'I': /* Used on Solaris. */ 804 case OPTION_DYNAMIC_LINKER: 805 command_line.interpreter = optarg; 806 break; 807 case OPTION_SYSROOT: 808 /* Already handled in ldmain.c. */ 809 break; 810 case OPTION_EB: 811 command_line.endian = ENDIAN_BIG; 812 break; 813 case OPTION_EL: 814 command_line.endian = ENDIAN_LITTLE; 815 break; 816 case OPTION_EMBEDDED_RELOCS: 817 command_line.embedded_relocs = TRUE; 818 break; 819 case OPTION_EXPORT_DYNAMIC: 820 case 'E': /* HP/UX compatibility. */ 821 link_info.export_dynamic = TRUE; 822 break; 823 case 'e': 824 lang_add_entry (optarg, TRUE); 825 break; 826 case 'f': 827 if (command_line.auxiliary_filters == NULL) 828 { 829 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 830 command_line.auxiliary_filters[0] = optarg; 831 command_line.auxiliary_filters[1] = NULL; 832 } 833 else 834 { 835 int c; 836 char **p; 837 838 c = 0; 839 for (p = command_line.auxiliary_filters; *p != NULL; p++) 840 ++c; 841 command_line.auxiliary_filters 842 = xrealloc (command_line.auxiliary_filters, 843 (c + 2) * sizeof (char *)); 844 command_line.auxiliary_filters[c] = optarg; 845 command_line.auxiliary_filters[c + 1] = NULL; 846 } 847 break; 848 case 'F': 849 command_line.filter_shlib = optarg; 850 break; 851 case OPTION_FORCE_EXE_SUFFIX: 852 command_line.force_exe_suffix = TRUE; 853 break; 854 case 'G': 855 { 856 char *end; 857 g_switch_value = strtoul (optarg, &end, 0); 858 if (*end) 859 einfo (_("%P%F: invalid number `%s'\n"), optarg); 860 } 861 break; 862 case 'g': 863 /* Ignore. */ 864 break; 865 case OPTION_GC_SECTIONS: 866 link_info.gc_sections = TRUE; 867 break; 868 case OPTION_PRINT_GC_SECTIONS: 869 link_info.print_gc_sections = TRUE; 870 break; 871 case OPTION_HELP: 872 help (); 873 xexit (0); 874 break; 875 case 'L': 876 ldfile_add_library_path (optarg, TRUE); 877 break; 878 case 'l': 879 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 880 break; 881 case 'M': 882 config.map_filename = "-"; 883 break; 884 case 'm': 885 /* Ignore. Was handled in a pre-parse. */ 886 break; 887 case OPTION_MAP: 888 config.map_filename = optarg; 889 break; 890 case 'N': 891 config.text_read_only = FALSE; 892 config.magic_demand_paged = FALSE; 893 config.dynamic_link = FALSE; 894 break; 895 case OPTION_NO_OMAGIC: 896 config.text_read_only = TRUE; 897 config.magic_demand_paged = TRUE; 898 /* NB/ Does not set dynamic_link to TRUE. 899 Use --call-shared or -Bdynamic for this. */ 900 break; 901 case 'n': 902 config.magic_demand_paged = FALSE; 903 config.dynamic_link = FALSE; 904 break; 905 case OPTION_NO_DEFINE_COMMON: 906 command_line.inhibit_common_definition = TRUE; 907 break; 908 case OPTION_NO_DEMANGLE: 909 demangling = FALSE; 910 break; 911 case OPTION_NO_GC_SECTIONS: 912 link_info.gc_sections = FALSE; 913 break; 914 case OPTION_NO_PRINT_GC_SECTIONS: 915 link_info.print_gc_sections = FALSE; 916 break; 917 case OPTION_NO_KEEP_MEMORY: 918 link_info.keep_memory = FALSE; 919 break; 920 case OPTION_NO_UNDEFINED: 921 link_info.unresolved_syms_in_objects 922 = how_to_report_unresolved_symbols; 923 break; 924 case OPTION_ALLOW_SHLIB_UNDEFINED: 925 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 926 break; 927 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 928 link_info.unresolved_syms_in_shared_libs 929 = how_to_report_unresolved_symbols; 930 break; 931 case OPTION_UNRESOLVED_SYMBOLS: 932 if (strcmp (optarg, "ignore-all") == 0) 933 { 934 link_info.unresolved_syms_in_objects = RM_IGNORE; 935 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 936 } 937 else if (strcmp (optarg, "report-all") == 0) 938 { 939 link_info.unresolved_syms_in_objects 940 = how_to_report_unresolved_symbols; 941 link_info.unresolved_syms_in_shared_libs 942 = how_to_report_unresolved_symbols; 943 } 944 else if (strcmp (optarg, "ignore-in-object-files") == 0) 945 { 946 link_info.unresolved_syms_in_objects = RM_IGNORE; 947 link_info.unresolved_syms_in_shared_libs 948 = how_to_report_unresolved_symbols; 949 } 950 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 951 { 952 link_info.unresolved_syms_in_objects 953 = how_to_report_unresolved_symbols; 954 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 955 } 956 else 957 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 958 break; 959 case OPTION_WARN_UNRESOLVED_SYMBOLS: 960 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 961 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 962 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 963 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 964 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 965 break; 966 967 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 968 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 969 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 970 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 971 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 972 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 973 break; 974 case OPTION_ALLOW_MULTIPLE_DEFINITION: 975 link_info.allow_multiple_definition = TRUE; 976 break; 977 case OPTION_NO_UNDEFINED_VERSION: 978 link_info.allow_undefined_version = FALSE; 979 break; 980 case OPTION_DEFAULT_SYMVER: 981 link_info.create_default_symver = TRUE; 982 break; 983 case OPTION_DEFAULT_IMPORTED_SYMVER: 984 link_info.default_imported_symver = TRUE; 985 break; 986 case OPTION_NO_WARN_MISMATCH: 987 command_line.warn_mismatch = FALSE; 988 break; 989 case OPTION_NO_WARN_SEARCH_MISMATCH: 990 command_line.warn_search_mismatch = FALSE; 991 break; 992 case OPTION_NOINHIBIT_EXEC: 993 force_make_executable = TRUE; 994 break; 995 case OPTION_NOSTDLIB: 996 config.only_cmd_line_lib_dirs = TRUE; 997 break; 998 case OPTION_NO_WHOLE_ARCHIVE: 999 whole_archive = FALSE; 1000 break; 1001 case 'O': 1002 /* FIXME "-O<non-digits> <value>" used to set the address of 1003 section <non-digits>. Was this for compatibility with 1004 something, or can we create a new option to do that 1005 (with a syntax similar to -defsym)? 1006 getopt can't handle two args to an option without kludges. */ 1007 1008 /* Enable optimizations of output files. */ 1009 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1010 break; 1011 case 'o': 1012 lang_add_output (optarg, 0); 1013 break; 1014 case OPTION_OFORMAT: 1015 lang_add_output_format (optarg, NULL, NULL, 0); 1016 break; 1017 case 'q': 1018 link_info.emitrelocations = TRUE; 1019 break; 1020 case 'i': 1021 case 'r': 1022 if (optind == last_optind) 1023 /* This can happen if the user put "-rpath,a" on the command 1024 line. (Or something similar. The comma is important). 1025 Getopt becomes confused and thinks that this is a -r option 1026 but it cannot parse the text after the -r so it refuses to 1027 increment the optind counter. Detect this case and issue 1028 an error message here. We cannot just make this a warning, 1029 increment optind, and continue because getopt is too confused 1030 and will seg-fault the next time around. */ 1031 einfo(_("%P%F: bad -rpath option\n")); 1032 1033 link_info.relocatable = TRUE; 1034 config.build_constructors = FALSE; 1035 config.magic_demand_paged = FALSE; 1036 config.text_read_only = FALSE; 1037 config.dynamic_link = FALSE; 1038 break; 1039 case 'R': 1040 /* The GNU linker traditionally uses -R to mean to include 1041 only the symbols from a file. The Solaris linker uses -R 1042 to set the path used by the runtime linker to find 1043 libraries. This is the GNU linker -rpath argument. We 1044 try to support both simultaneously by checking the file 1045 named. If it is a directory, rather than a regular file, 1046 we assume -rpath was meant. */ 1047 { 1048 struct stat s; 1049 1050 if (stat (optarg, &s) >= 0 1051 && ! S_ISDIR (s.st_mode)) 1052 { 1053 lang_add_input_file (optarg, 1054 lang_input_file_is_symbols_only_enum, 1055 NULL); 1056 break; 1057 } 1058 } 1059 /* Fall through. */ 1060 case OPTION_RPATH: 1061 if (command_line.rpath == NULL) 1062 command_line.rpath = xstrdup (optarg); 1063 else 1064 { 1065 size_t rpath_len = strlen (command_line.rpath); 1066 size_t optarg_len = strlen (optarg); 1067 char *buf; 1068 char *cp = command_line.rpath; 1069 1070 /* First see whether OPTARG is already in the path. */ 1071 do 1072 { 1073 if (strncmp (optarg, cp, optarg_len) == 0 1074 && (cp[optarg_len] == 0 1075 || cp[optarg_len] == config.rpath_separator)) 1076 /* We found it. */ 1077 break; 1078 1079 /* Not yet found. */ 1080 cp = strchr (cp, config.rpath_separator); 1081 if (cp != NULL) 1082 ++cp; 1083 } 1084 while (cp != NULL); 1085 1086 if (cp == NULL) 1087 { 1088 buf = xmalloc (rpath_len + optarg_len + 2); 1089 sprintf (buf, "%s%c%s", command_line.rpath, 1090 config.rpath_separator, optarg); 1091 free (command_line.rpath); 1092 command_line.rpath = buf; 1093 } 1094 } 1095 break; 1096 case OPTION_RPATH_LINK: 1097 if (command_line.rpath_link == NULL) 1098 command_line.rpath_link = xstrdup (optarg); 1099 else 1100 { 1101 char *buf; 1102 1103 buf = xmalloc (strlen (command_line.rpath_link) 1104 + strlen (optarg) 1105 + 2); 1106 sprintf (buf, "%s%c%s", command_line.rpath_link, 1107 config.rpath_separator, optarg); 1108 free (command_line.rpath_link); 1109 command_line.rpath_link = buf; 1110 } 1111 break; 1112 case OPTION_RELAX: 1113 command_line.relax = TRUE; 1114 break; 1115 case OPTION_RETAIN_SYMBOLS_FILE: 1116 add_keepsyms_file (optarg); 1117 break; 1118 case 'S': 1119 link_info.strip = strip_debugger; 1120 break; 1121 case 's': 1122 link_info.strip = strip_all; 1123 break; 1124 case OPTION_STRIP_DISCARDED: 1125 link_info.strip_discarded = TRUE; 1126 break; 1127 case OPTION_NO_STRIP_DISCARDED: 1128 link_info.strip_discarded = FALSE; 1129 break; 1130 case OPTION_SHARED: 1131 if (config.has_shared) 1132 { 1133 link_info.shared = TRUE; 1134 /* When creating a shared library, the default 1135 behaviour is to ignore any unresolved references. */ 1136 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1137 link_info.unresolved_syms_in_objects = RM_IGNORE; 1138 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1139 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1140 } 1141 else 1142 einfo (_("%P%F: -shared not supported\n")); 1143 break; 1144 case OPTION_PIE: 1145 if (config.has_shared) 1146 { 1147 link_info.shared = TRUE; 1148 link_info.pie = TRUE; 1149 } 1150 else 1151 einfo (_("%P%F: -pie not supported\n")); 1152 break; 1153 case 'h': /* Used on Solaris. */ 1154 case OPTION_SONAME: 1155 command_line.soname = optarg; 1156 break; 1157 case OPTION_SORT_COMMON: 1158 if (optarg == NULL 1159 || strcmp (optarg, N_("descending")) == 0) 1160 config.sort_common = sort_descending; 1161 else if (strcmp (optarg, N_("ascending")) == 0) 1162 config.sort_common = sort_ascending; 1163 else 1164 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1165 optarg); 1166 break; 1167 case OPTION_SORT_SECTION: 1168 if (strcmp (optarg, N_("name")) == 0) 1169 sort_section = by_name; 1170 else if (strcmp (optarg, N_("alignment")) == 0) 1171 sort_section = by_alignment; 1172 else 1173 einfo (_("%P%F: invalid section sorting option: %s\n"), 1174 optarg); 1175 break; 1176 case OPTION_STATS: 1177 config.stats = TRUE; 1178 break; 1179 case OPTION_SYMBOLIC: 1180 command_line.symbolic = symbolic; 1181 break; 1182 case OPTION_SYMBOLIC_FUNCTIONS: 1183 command_line.symbolic = symbolic_functions; 1184 break; 1185 case 't': 1186 trace_files = TRUE; 1187 break; 1188 case 'T': 1189 previous_script_handle = saved_script_handle; 1190 ldfile_open_command_file (optarg); 1191 parser_input = input_script; 1192 yyparse (); 1193 previous_script_handle = NULL; 1194 break; 1195 case OPTION_DEFAULT_SCRIPT: 1196 command_line.default_script = optarg; 1197 break; 1198 case OPTION_SECTION_START: 1199 { 1200 char *optarg2; 1201 char *sec_name; 1202 int len; 1203 1204 /* Check for <something>=<somthing>... */ 1205 optarg2 = strchr (optarg, '='); 1206 if (optarg2 == NULL) 1207 einfo (_("%P%F: invalid argument to option" 1208 " \"--section-start\"\n")); 1209 1210 optarg2++; 1211 1212 /* So far so good. Are all the args present? */ 1213 if ((*optarg == '\0') || (*optarg2 == '\0')) 1214 einfo (_("%P%F: missing argument(s) to option" 1215 " \"--section-start\"\n")); 1216 1217 /* We must copy the section name as set_section_start 1218 doesn't do it for us. */ 1219 len = optarg2 - optarg; 1220 sec_name = xmalloc (len); 1221 memcpy (sec_name, optarg, len - 1); 1222 sec_name[len - 1] = 0; 1223 1224 /* Then set it... */ 1225 set_section_start (sec_name, optarg2); 1226 } 1227 break; 1228 case OPTION_TARGET_HELP: 1229 /* Mention any target specific options. */ 1230 ldemul_list_emulation_options (stdout); 1231 exit (0); 1232 case OPTION_TBSS: 1233 set_segment_start (".bss", optarg); 1234 break; 1235 case OPTION_TDATA: 1236 set_segment_start (".data", optarg); 1237 break; 1238 case OPTION_TTEXT: 1239 set_segment_start (".text", optarg); 1240 break; 1241 case OPTION_TRADITIONAL_FORMAT: 1242 link_info.traditional_format = TRUE; 1243 break; 1244 case OPTION_TASK_LINK: 1245 link_info.task_link = TRUE; 1246 /* Fall through - do an implied -r option. */ 1247 case OPTION_UR: 1248 link_info.relocatable = TRUE; 1249 config.build_constructors = TRUE; 1250 config.magic_demand_paged = FALSE; 1251 config.text_read_only = FALSE; 1252 config.dynamic_link = FALSE; 1253 break; 1254 case 'u': 1255 ldlang_add_undef (optarg); 1256 break; 1257 case OPTION_UNIQUE: 1258 if (optarg != NULL) 1259 lang_add_unique (optarg); 1260 else 1261 config.unique_orphan_sections = TRUE; 1262 break; 1263 case OPTION_VERBOSE: 1264 ldversion (1); 1265 version_printed = TRUE; 1266 trace_file_tries = TRUE; 1267 overflow_cutoff_limit = -2; 1268 break; 1269 case 'v': 1270 ldversion (0); 1271 version_printed = TRUE; 1272 break; 1273 case 'V': 1274 ldversion (1); 1275 version_printed = TRUE; 1276 break; 1277 case OPTION_VERSION: 1278 ldversion (2); 1279 xexit (0); 1280 break; 1281 case OPTION_VERSION_SCRIPT: 1282 /* This option indicates a small script that only specifies 1283 version information. Read it, but don't assume that 1284 we've seen a linker script. */ 1285 { 1286 FILE *hold_script_handle; 1287 1288 hold_script_handle = saved_script_handle; 1289 ldfile_open_command_file (optarg); 1290 saved_script_handle = hold_script_handle; 1291 parser_input = input_version_script; 1292 yyparse (); 1293 } 1294 break; 1295 case OPTION_VERSION_EXPORTS_SECTION: 1296 /* This option records a version symbol to be applied to the 1297 symbols listed for export to be found in the object files 1298 .exports sections. */ 1299 command_line.version_exports_section = optarg; 1300 break; 1301 case OPTION_DYNAMIC_LIST_DATA: 1302 command_line.dynamic_list = dynamic_list_data; 1303 if (command_line.symbolic == symbolic) 1304 command_line.symbolic = symbolic_unset; 1305 break; 1306 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1307 lang_append_dynamic_list_cpp_typeinfo (); 1308 if (command_line.dynamic_list != dynamic_list_data) 1309 command_line.dynamic_list = dynamic_list; 1310 if (command_line.symbolic == symbolic) 1311 command_line.symbolic = symbolic_unset; 1312 break; 1313 case OPTION_DYNAMIC_LIST_CPP_NEW: 1314 lang_append_dynamic_list_cpp_new (); 1315 if (command_line.dynamic_list != dynamic_list_data) 1316 command_line.dynamic_list = dynamic_list; 1317 if (command_line.symbolic == symbolic) 1318 command_line.symbolic = symbolic_unset; 1319 break; 1320 case OPTION_DYNAMIC_LIST: 1321 /* This option indicates a small script that only specifies 1322 a dynamic list. Read it, but don't assume that we've 1323 seen a linker script. */ 1324 { 1325 FILE *hold_script_handle; 1326 1327 hold_script_handle = saved_script_handle; 1328 ldfile_open_command_file (optarg); 1329 saved_script_handle = hold_script_handle; 1330 parser_input = input_dynamic_list; 1331 yyparse (); 1332 } 1333 if (command_line.dynamic_list != dynamic_list_data) 1334 command_line.dynamic_list = dynamic_list; 1335 if (command_line.symbolic == symbolic) 1336 command_line.symbolic = symbolic_unset; 1337 break; 1338 case OPTION_WARN_COMMON: 1339 config.warn_common = TRUE; 1340 break; 1341 case OPTION_WARN_CONSTRUCTORS: 1342 config.warn_constructors = TRUE; 1343 break; 1344 case OPTION_WARN_FATAL: 1345 config.fatal_warnings = TRUE; 1346 break; 1347 case OPTION_NO_WARN_FATAL: 1348 config.fatal_warnings = FALSE; 1349 break; 1350 case OPTION_WARN_MULTIPLE_GP: 1351 config.warn_multiple_gp = TRUE; 1352 break; 1353 case OPTION_WARN_ONCE: 1354 config.warn_once = TRUE; 1355 break; 1356 case OPTION_WARN_SECTION_ALIGN: 1357 config.warn_section_align = TRUE; 1358 break; 1359 case OPTION_WARN_SHARED_TEXTREL: 1360 link_info.warn_shared_textrel = TRUE; 1361 break; 1362 case OPTION_WHOLE_ARCHIVE: 1363 whole_archive = TRUE; 1364 break; 1365 case OPTION_ADD_NEEDED: 1366 add_needed = TRUE; 1367 break; 1368 case OPTION_NO_ADD_NEEDED: 1369 add_needed = FALSE; 1370 break; 1371 case OPTION_AS_NEEDED: 1372 as_needed = TRUE; 1373 break; 1374 case OPTION_NO_AS_NEEDED: 1375 as_needed = FALSE; 1376 break; 1377 case OPTION_WRAP: 1378 add_wrap (optarg); 1379 break; 1380 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1381 add_ignoresym (optarg); 1382 break; 1383 case OPTION_DISCARD_NONE: 1384 link_info.discard = discard_none; 1385 break; 1386 case 'X': 1387 link_info.discard = discard_l; 1388 break; 1389 case 'x': 1390 link_info.discard = discard_all; 1391 break; 1392 case 'Y': 1393 if (CONST_STRNEQ (optarg, "P,")) 1394 optarg += 2; 1395 if (default_dirlist != NULL) 1396 free (default_dirlist); 1397 default_dirlist = xstrdup (optarg); 1398 break; 1399 case 'y': 1400 add_ysym (optarg); 1401 break; 1402 case OPTION_SPARE_DYNAMIC_TAGS: 1403 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1404 break; 1405 case OPTION_SPLIT_BY_RELOC: 1406 if (optarg != NULL) 1407 config.split_by_reloc = strtoul (optarg, NULL, 0); 1408 else 1409 config.split_by_reloc = 32768; 1410 break; 1411 case OPTION_SPLIT_BY_FILE: 1412 if (optarg != NULL) 1413 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1414 else 1415 config.split_by_file = 1; 1416 break; 1417 case OPTION_CHECK_SECTIONS: 1418 command_line.check_section_addresses = TRUE; 1419 break; 1420 case OPTION_NO_CHECK_SECTIONS: 1421 command_line.check_section_addresses = FALSE; 1422 break; 1423 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1424 command_line.accept_unknown_input_arch = TRUE; 1425 break; 1426 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1427 command_line.accept_unknown_input_arch = FALSE; 1428 break; 1429 case '(': 1430 if (ingroup) 1431 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1432 1433 lang_enter_group (); 1434 ingroup = 1; 1435 break; 1436 case ')': 1437 if (! ingroup) 1438 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1439 1440 lang_leave_group (); 1441 ingroup = 0; 1442 break; 1443 1444 case OPTION_INIT: 1445 link_info.init_function = optarg; 1446 break; 1447 1448 case OPTION_FINI: 1449 link_info.fini_function = optarg; 1450 break; 1451 1452 case OPTION_REDUCE_MEMORY_OVERHEADS: 1453 link_info.reduce_memory_overheads = TRUE; 1454 if (config.hash_table_size == 0) 1455 config.hash_table_size = 1021; 1456 break; 1457 1458 case OPTION_HASH_SIZE: 1459 { 1460 bfd_size_type new_size; 1461 1462 new_size = strtoul (optarg, NULL, 0); 1463 if (new_size) 1464 config.hash_table_size = new_size; 1465 else 1466 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1467 } 1468 break; 1469 } 1470 } 1471 1472 if (ingroup) 1473 lang_leave_group (); 1474 1475 if (default_dirlist != NULL) 1476 { 1477 set_default_dirlist (default_dirlist); 1478 free (default_dirlist); 1479 } 1480 1481 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1482 /* FIXME: Should we allow emulations a chance to set this ? */ 1483 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1484 1485 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1486 /* FIXME: Should we allow emulations a chance to set this ? */ 1487 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1488 } 1489 1490 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1491 library search path. */ 1492 1493 static void 1494 set_default_dirlist (char *dirlist_ptr) 1495 { 1496 char *p; 1497 1498 while (1) 1499 { 1500 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1501 if (p != NULL) 1502 *p = '\0'; 1503 if (*dirlist_ptr != '\0') 1504 ldfile_add_library_path (dirlist_ptr, TRUE); 1505 if (p == NULL) 1506 break; 1507 dirlist_ptr = p + 1; 1508 } 1509 } 1510 1511 static void 1512 set_section_start (char *sect, char *valstr) 1513 { 1514 const char *end; 1515 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1516 if (*end) 1517 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1518 lang_section_start (sect, exp_intop (val), NULL); 1519 } 1520 1521 static void 1522 set_segment_start (const char *section, char *valstr) 1523 { 1524 const char *name; 1525 const char *end; 1526 segment_type *seg; 1527 1528 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1529 if (*end) 1530 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1531 /* If we already have an entry for this segment, update the existing 1532 value. */ 1533 name = section + 1; 1534 for (seg = segments; seg; seg = seg->next) 1535 if (strcmp (seg->name, name) == 0) 1536 { 1537 seg->value = val; 1538 return; 1539 } 1540 /* There was no existing value so we must create a new segment 1541 entry. */ 1542 seg = stat_alloc (sizeof (*seg)); 1543 seg->name = name; 1544 seg->value = val; 1545 seg->used = FALSE; 1546 /* Add it to the linked list of segments. */ 1547 seg->next = segments; 1548 segments = seg; 1549 /* Historically, -Ttext and friends set the base address of a 1550 particular section. For backwards compatibility, we still do 1551 that. If a SEGMENT_START directive is seen, the section address 1552 assignment will be disabled. */ 1553 lang_section_start (section, exp_intop (val), seg); 1554 } 1555 1556 1557 /* Print help messages for the options. */ 1559 1560 static void 1561 help (void) 1562 { 1563 unsigned i; 1564 const char **targets, **pp; 1565 int len; 1566 1567 printf (_("Usage: %s [options] file...\n"), program_name); 1568 1569 printf (_("Options:\n")); 1570 for (i = 0; i < OPTION_COUNT; i++) 1571 { 1572 if (ld_options[i].doc != NULL) 1573 { 1574 bfd_boolean comma; 1575 unsigned j; 1576 1577 printf (" "); 1578 1579 comma = FALSE; 1580 len = 2; 1581 1582 j = i; 1583 do 1584 { 1585 if (ld_options[j].shortopt != '\0' 1586 && ld_options[j].control != NO_HELP) 1587 { 1588 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1589 len += (comma ? 2 : 0) + 2; 1590 if (ld_options[j].arg != NULL) 1591 { 1592 if (ld_options[j].opt.has_arg != optional_argument) 1593 { 1594 printf (" "); 1595 ++len; 1596 } 1597 printf ("%s", _(ld_options[j].arg)); 1598 len += strlen (_(ld_options[j].arg)); 1599 } 1600 comma = TRUE; 1601 } 1602 ++j; 1603 } 1604 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1605 1606 j = i; 1607 do 1608 { 1609 if (ld_options[j].opt.name != NULL 1610 && ld_options[j].control != NO_HELP) 1611 { 1612 int two_dashes = 1613 (ld_options[j].control == TWO_DASHES 1614 || ld_options[j].control == EXACTLY_TWO_DASHES); 1615 1616 printf ("%s-%s%s", 1617 comma ? ", " : "", 1618 two_dashes ? "-" : "", 1619 ld_options[j].opt.name); 1620 len += ((comma ? 2 : 0) 1621 + 1 1622 + (two_dashes ? 1 : 0) 1623 + strlen (ld_options[j].opt.name)); 1624 if (ld_options[j].arg != NULL) 1625 { 1626 printf (" %s", _(ld_options[j].arg)); 1627 len += 1 + strlen (_(ld_options[j].arg)); 1628 } 1629 comma = TRUE; 1630 } 1631 ++j; 1632 } 1633 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1634 1635 if (len >= 30) 1636 { 1637 printf ("\n"); 1638 len = 0; 1639 } 1640 1641 for (; len < 30; len++) 1642 putchar (' '); 1643 1644 printf ("%s\n", _(ld_options[i].doc)); 1645 } 1646 } 1647 printf (_(" @FILE")); 1648 for (len = strlen (" @FILE"); len < 30; len++) 1649 putchar (' '); 1650 printf (_("Read options from FILE\n")); 1651 1652 /* Note: Various tools (such as libtool) depend upon the 1653 format of the listings below - do not change them. */ 1654 /* xgettext:c-format */ 1655 printf (_("%s: supported targets:"), program_name); 1656 targets = bfd_target_list (); 1657 for (pp = targets; *pp != NULL; pp++) 1658 printf (" %s", *pp); 1659 free (targets); 1660 printf ("\n"); 1661 1662 /* xgettext:c-format */ 1663 printf (_("%s: supported emulations: "), program_name); 1664 ldemul_list_emulations (stdout); 1665 printf ("\n"); 1666 1667 /* xgettext:c-format */ 1668 printf (_("%s: emulation specific options:\n"), program_name); 1669 ldemul_list_emulation_options (stdout); 1670 printf ("\n"); 1671 1672 if (REPORT_BUGS_TO[0]) 1673 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1674 } 1675
Indexes created Mon Mar 02 05:31:46 UTC 2026