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 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 "config.h" 24#include "bfd.h" 25#include "sysdep.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#if defined(__BEOS__) || defined(__HAIKU__) 45#include <OS.h> 46/* the thread priority used for all gcc-tools */ 47static int priority = B_LOW_PRIORITY; 48#endif 49 50#ifndef PATH_SEPARATOR 51#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 52#define PATH_SEPARATOR ';' 53#else 54#define PATH_SEPARATOR ':' 55#endif 56#endif 57 58/* Somewhere above, sys/stat.h got included . . . . */ 59#if !defined(S_ISDIR) && defined(S_IFDIR) 60#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 61#endif 62 63static void set_default_dirlist (char *); 64static void set_section_start (char *, char *); 65static void set_segment_start (const char *, char *); 66static void help (void); 67 68/* Non-zero if we are processing a --defsym from the command line. */ 69int parsing_defsym = 0; 70 71/* Codes used for the long options with no short synonyms. 150 isn't 72 special; it's just an arbitrary non-ASCII char value. */ 73enum option_values 74{ 75 OPTION_ASSERT = 150, 76 OPTION_CALL_SHARED, 77 OPTION_CREF, 78 OPTION_DEFSYM, 79 OPTION_DEMANGLE, 80 OPTION_DYNAMIC_LINKER, 81 OPTION_SYSROOT, 82 OPTION_EB, 83 OPTION_EL, 84 OPTION_EMBEDDED_RELOCS, 85 OPTION_EXPORT_DYNAMIC, 86 OPTION_HELP, 87 OPTION_IGNORE, 88 OPTION_MAP, 89 OPTION_NO_DEMANGLE, 90 OPTION_NO_KEEP_MEMORY, 91 OPTION_NO_WARN_MISMATCH, 92 OPTION_NOINHIBIT_EXEC, 93 OPTION_NON_SHARED, 94 OPTION_NO_WHOLE_ARCHIVE, 95 OPTION_OFORMAT, 96 OPTION_RELAX, 97 OPTION_RETAIN_SYMBOLS_FILE, 98 OPTION_RPATH, 99 OPTION_RPATH_LINK, 100 OPTION_SHARED, 101 OPTION_SONAME, 102 OPTION_SORT_COMMON, 103 OPTION_SORT_SECTION, 104 OPTION_STATS, 105 OPTION_SYMBOLIC, 106 OPTION_TASK_LINK, 107 OPTION_TBSS, 108 OPTION_TDATA, 109 OPTION_TTEXT, 110 OPTION_TRADITIONAL_FORMAT, 111 OPTION_UR, 112 OPTION_VERBOSE, 113 OPTION_VERSION, 114 OPTION_VERSION_SCRIPT, 115 OPTION_VERSION_EXPORTS_SECTION, 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_HASH_SIZE, 134 OPTION_CHECK_SECTIONS, 135 OPTION_NO_CHECK_SECTIONS, 136 OPTION_NO_UNDEFINED, 137 OPTION_INIT, 138 OPTION_FINI, 139 OPTION_SECTION_START, 140 OPTION_UNIQUE, 141 OPTION_TARGET_HELP, 142 OPTION_ALLOW_SHLIB_UNDEFINED, 143 OPTION_NO_ALLOW_SHLIB_UNDEFINED, 144 OPTION_ALLOW_MULTIPLE_DEFINITION, 145 OPTION_NO_UNDEFINED_VERSION, 146 OPTION_DEFAULT_SYMVER, 147 OPTION_DEFAULT_IMPORTED_SYMVER, 148 OPTION_DISCARD_NONE, 149 OPTION_SPARE_DYNAMIC_TAGS, 150 OPTION_NO_DEFINE_COMMON, 151 OPTION_NOSTDLIB, 152 OPTION_NO_OMAGIC, 153 OPTION_STRIP_DISCARDED, 154 OPTION_NO_STRIP_DISCARDED, 155 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, 156 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, 157 OPTION_PIE, 158 OPTION_UNRESOLVED_SYMBOLS, 159 OPTION_WARN_UNRESOLVED_SYMBOLS, 160 OPTION_ERROR_UNRESOLVED_SYMBOLS, 161 OPTION_WARN_SHARED_TEXTREL, 162 OPTION_REDUCE_MEMORY_OVERHEADS, 163 OPTION_PRIORITY 164}; 165 166/* The long options. This structure is used for both the option 167 parsing and the help text. */ 168 169struct ld_option 170{ 171 /* The long option information. */ 172 struct option opt; 173 /* The short option with the same meaning ('\0' if none). */ 174 char shortopt; 175 /* The name of the argument (NULL if none). */ 176 const char *arg; 177 /* The documentation string. If this is NULL, this is a synonym for 178 the previous option. */ 179 const char *doc; 180 enum { 181 /* Use one dash before long option name. */ 182 ONE_DASH, 183 /* Use two dashes before long option name. */ 184 TWO_DASHES, 185 /* Only accept two dashes before the long option name. 186 This is an overloading of the use of this enum, since originally it 187 was only intended to tell the --help display function how to display 188 the long option name. This feature was added in order to resolve 189 the confusion about the -omagic command line switch. Is it setting 190 the output file name to "magic" or is it setting the NMAGIC flag on 191 the output ? It has been decided that it is setting the output file 192 name, and that if you want to set the NMAGIC flag you should use -N 193 or --omagic. */ 194 EXACTLY_TWO_DASHES, 195 /* Don't mention this option in --help output. */ 196 NO_HELP 197 } control; 198}; 199 200static const struct ld_option ld_options[] = 201{ 202 { {NULL, required_argument, NULL, '\0'}, 203 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 204 ONE_DASH }, 205 { {"architecture", required_argument, NULL, 'A'}, 206 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 207 { {"format", required_argument, NULL, 'b'}, 208 'b', N_("TARGET"), N_("Specify target for following input files"), 209 TWO_DASHES }, 210 { {"mri-script", required_argument, NULL, 'c'}, 211 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 212 { {"dc", no_argument, NULL, 'd'}, 213 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 214 { {"dp", no_argument, NULL, 'd'}, 215 '\0', NULL, NULL, ONE_DASH }, 216 { {"entry", required_argument, NULL, 'e'}, 217 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 218 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 219 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 220 { {"EB", no_argument, NULL, OPTION_EB}, 221 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 222 { {"EL", no_argument, NULL, OPTION_EL}, 223 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 224 { {"auxiliary", required_argument, NULL, 'f'}, 225 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 226 TWO_DASHES }, 227 { {"filter", required_argument, NULL, 'F'}, 228 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 229 TWO_DASHES }, 230 { {NULL, no_argument, NULL, '\0'}, 231 'g', NULL, N_("Ignored"), ONE_DASH }, 232 { {"gpsize", required_argument, NULL, 'G'}, 233 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 234 TWO_DASHES }, 235 { {"soname", required_argument, NULL, OPTION_SONAME}, 236 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 237 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 238 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 239 TWO_DASHES }, 240 { {"library", required_argument, NULL, 'l'}, 241 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 242 { {"library-path", required_argument, NULL, 'L'}, 243 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 244 TWO_DASHES }, 245 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 246 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 247 { {NULL, required_argument, NULL, '\0'}, 248 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 249 { {"print-map", no_argument, NULL, 'M'}, 250 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 251 { {"nmagic", no_argument, NULL, 'n'}, 252 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 253 { {"omagic", no_argument, NULL, 'N'}, 254 'N', NULL, N_("Do not page align data, do not make text readonly"), 255 EXACTLY_TWO_DASHES }, 256 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 257 '\0', NULL, N_("Page align data, make text readonly"), 258 EXACTLY_TWO_DASHES }, 259 { {"output", required_argument, NULL, 'o'}, 260 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 261 { {NULL, required_argument, NULL, '\0'}, 262 'O', NULL, N_("Optimize output file"), ONE_DASH }, 263 { {"priority", required_argument, NULL, OPTION_PRIORITY}, 264 '\0', N_("PRIO"), N_("Set thread priority to PRIO"), 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 { {"undefined", required_argument, NULL, 'u'}, 289 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 290 TWO_DASHES }, 291 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 292 '\0', N_("[=SECTION]"), 293 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 294 { {"Ur", no_argument, NULL, OPTION_UR}, 295 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 296 { {"version", no_argument, NULL, OPTION_VERSION}, 297 'v', NULL, N_("Print version information"), TWO_DASHES }, 298 { {NULL, no_argument, NULL, '\0'}, 299 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 300 { {"discard-all", no_argument, NULL, 'x'}, 301 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 302 { {"discard-locals", no_argument, NULL, 'X'}, 303 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 304 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 305 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 306 { {"trace-symbol", required_argument, NULL, 'y'}, 307 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 308 { {NULL, required_argument, NULL, '\0'}, 309 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 310 ONE_DASH }, 311 { {"start-group", no_argument, NULL, '('}, 312 '(', NULL, N_("Start a group"), TWO_DASHES }, 313 { {"end-group", no_argument, NULL, ')'}, 314 ')', NULL, N_("End a group"), TWO_DASHES }, 315 { {"accept-unknown-input-arch", no_argument, NULL, 316 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 317 '\0', NULL, 318 N_("Accept input files whose architecture cannot be determined"), 319 TWO_DASHES }, 320 { {"no-accept-unknown-input-arch", no_argument, NULL, 321 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 322 '\0', NULL, N_("Reject input files whose architecture is unknown"), 323 TWO_DASHES }, 324 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED}, 325 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n" 326 "\t\t\t\tfollowing dynamic libs"), TWO_DASHES }, 327 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED}, 328 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n" 329 "\t\t\t\tin following dynamic libs"), TWO_DASHES }, 330 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 331 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 332 TWO_DASHES }, 333 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 334 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), 335 TWO_DASHES }, 336 { {"assert", required_argument, NULL, OPTION_ASSERT}, 337 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 338 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 339 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 340 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 341 '\0', NULL, NULL, ONE_DASH }, 342 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 343 '\0', NULL, NULL, ONE_DASH }, 344 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 345 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 346 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 347 '\0', NULL, NULL, ONE_DASH }, 348 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 349 '\0', NULL, NULL, ONE_DASH }, 350 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 351 '\0', NULL, NULL, ONE_DASH }, 352 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 353 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 354 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 355 '\0', NULL, N_("Check section addresses for overlaps (default)"), 356 TWO_DASHES }, 357 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 358 '\0', NULL, N_("Do not check section addresses for overlaps"), 359 TWO_DASHES }, 360 { {"cref", no_argument, NULL, OPTION_CREF}, 361 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 362 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 363 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 364 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 365 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 366 TWO_DASHES }, 367 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 368 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 369 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 370 '\0', NULL, N_("Treat warnings as errors"), 371 TWO_DASHES }, 372 { {"fini", required_argument, NULL, OPTION_FINI}, 373 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 374 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 375 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 376 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 377 '\0', NULL, N_("Remove unused sections (on some targets)"), 378 TWO_DASHES }, 379 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 380 '\0', NULL, N_("Don't remove unused sections (default)"), 381 TWO_DASHES }, 382 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 383 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 384 TWO_DASHES }, 385 { {"help", no_argument, NULL, OPTION_HELP}, 386 '\0', NULL, N_("Print option help"), TWO_DASHES }, 387 { {"init", required_argument, NULL, OPTION_INIT}, 388 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 389 { {"Map", required_argument, NULL, OPTION_MAP}, 390 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 391 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 392 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 393 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 394 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 395 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 396 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 397 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 398 '\0', NULL, N_("Do not allow unresolved references in object files"), 399 TWO_DASHES }, 400 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 401 '\0', NULL, N_("Allow unresolved references in shared libaries"), 402 TWO_DASHES }, 403 { {"no-allow-shlib-undefined", no_argument, NULL, 404 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 405 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 406 TWO_DASHES }, 407 { {"allow-multiple-definition", no_argument, NULL, 408 OPTION_ALLOW_MULTIPLE_DEFINITION}, 409 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 410 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 411 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 412 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 413 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 414 { {"default-imported-symver", no_argument, NULL, 415 OPTION_DEFAULT_IMPORTED_SYMVER}, 416 '\0', NULL, N_("Create default symbol version for imported symbols"), 417 TWO_DASHES }, 418 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 419 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 420 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 421 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 422 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 423 '\0', NULL, N_("Create an output file even if errors occur"), 424 TWO_DASHES }, 425 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 426 '\0', NULL, NULL, NO_HELP }, 427 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 428 '\0', NULL, N_("Only use library directories specified on\n" 429 "\t\t\t\tthe command line"), ONE_DASH }, 430 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 431 '\0', N_("TARGET"), N_("Specify target of output file"), 432 EXACTLY_TWO_DASHES }, 433 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 434 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 435 { {"reduce-memory-overheads", no_argument, NULL, 436 OPTION_REDUCE_MEMORY_OVERHEADS}, 437 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 438 TWO_DASHES }, 439 { {"relax", no_argument, NULL, OPTION_RELAX}, 440 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 441 { {"retain-symbols-file", required_argument, NULL, 442 OPTION_RETAIN_SYMBOLS_FILE}, 443 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 444 { {"rpath", required_argument, NULL, OPTION_RPATH}, 445 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 446 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 447 '\0', N_("PATH"), N_("Set link time shared library search path"), 448 ONE_DASH }, 449 { {"shared", no_argument, NULL, OPTION_SHARED}, 450 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 451 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 452 '\0', NULL, NULL, ONE_DASH }, 453 { {"pie", no_argument, NULL, OPTION_PIE}, 454 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 455 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 456 '\0', NULL, NULL, TWO_DASHES }, 457 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, 458 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, 459 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 460 '\0', NULL, NULL, NO_HELP }, 461 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 462 '\0', N_("name|alignment"), 463 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 464 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 465 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 466 TWO_DASHES }, 467 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 468 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 469 TWO_DASHES }, 470 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 471 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 472 TWO_DASHES }, 473 { {"stats", no_argument, NULL, OPTION_STATS}, 474 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 475 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 476 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 477 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 478 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 479 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 480 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 481 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 482 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 483 TWO_DASHES }, 484 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 485 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 486 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 487 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 488 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 489 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 490 { {"unresolved-symbols=<method>", required_argument, NULL, 491 OPTION_UNRESOLVED_SYMBOLS}, 492 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 493 "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n" 494 "\t\t\t\tignore-in-shared-libs"), TWO_DASHES }, 495 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 496 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 497 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 498 '\0', NULL, NULL, NO_HELP }, 499 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 500 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 501 { {"version-exports-section", required_argument, NULL, 502 OPTION_VERSION_EXPORTS_SECTION }, 503 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 504 "\t\t\t\tSYMBOL as the version."), TWO_DASHES }, 505 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 506 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 507 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 508 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 509 TWO_DASHES }, 510 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 511 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 512 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 513 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 514 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 515 '\0', NULL, N_("Warn if start of section changes due to alignment"), 516 TWO_DASHES }, 517 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 518 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 519 TWO_DASHES }, 520 { {"warn-unresolved-symbols", no_argument, NULL, 521 OPTION_WARN_UNRESOLVED_SYMBOLS}, 522 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 523 { {"error-unresolved-symbols", no_argument, NULL, 524 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 525 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 526 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 527 '\0', NULL, N_("Include all objects from following archives"), 528 TWO_DASHES }, 529 { {"wrap", required_argument, NULL, OPTION_WRAP}, 530 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 531}; 532 533#define OPTION_COUNT ARRAY_SIZE (ld_options) 534 535void 536parse_args (unsigned argc, char **argv) 537{ 538 unsigned i; 539 int is, il, irl; 540 int ingroup = 0; 541 char *default_dirlist = NULL; 542 char *shortopts; 543 struct option *longopts; 544 struct option *really_longopts; 545 int last_optind; 546 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 547 548 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 549 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 550 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 551 552 /* Starting the short option string with '-' is for programs that 553 expect options and other ARGV-elements in any order and that care about 554 the ordering of the two. We describe each non-option ARGV-element 555 as if it were the argument of an option with character code 1. */ 556 shortopts[0] = '-'; 557 is = 1; 558 il = 0; 559 irl = 0; 560 for (i = 0; i < OPTION_COUNT; i++) 561 { 562 if (ld_options[i].shortopt != '\0') 563 { 564 shortopts[is] = ld_options[i].shortopt; 565 ++is; 566 if (ld_options[i].opt.has_arg == required_argument 567 || ld_options[i].opt.has_arg == optional_argument) 568 { 569 shortopts[is] = ':'; 570 ++is; 571 if (ld_options[i].opt.has_arg == optional_argument) 572 { 573 shortopts[is] = ':'; 574 ++is; 575 } 576 } 577 } 578 if (ld_options[i].opt.name != NULL) 579 { 580 if (ld_options[i].control == EXACTLY_TWO_DASHES) 581 { 582 really_longopts[irl] = ld_options[i].opt; 583 ++irl; 584 } 585 else 586 { 587 longopts[il] = ld_options[i].opt; 588 ++il; 589 } 590 } 591 } 592 shortopts[is] = '\0'; 593 longopts[il].name = NULL; 594 really_longopts[irl].name = NULL; 595 596 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 597 598 /* The -G option is ambiguous on different platforms. Sometimes it 599 specifies the largest data size to put into the small data 600 section. Sometimes it is equivalent to --shared. Unfortunately, 601 the first form takes an argument, while the second does not. 602 603 We need to permit the --shared form because on some platforms, 604 such as Solaris, gcc -shared will pass -G to the linker. 605 606 To permit either usage, we look through the argument list. If we 607 find -G not followed by a number, we change it into --shared. 608 This will work for most normal cases. */ 609 for (i = 1; i < argc; i++) 610 if (strcmp (argv[i], "-G") == 0 611 && (i + 1 >= argc 612 || ! ISDIGIT (argv[i + 1][0]))) 613 argv[i] = (char *) "--shared"; 614 615 /* Because we permit long options to start with a single dash, and 616 we have a --library option, and the -l option is conventionally 617 used with an immediately following argument, we can have bad 618 results if somebody tries to use -l with a library whose name 619 happens to start with "ibrary", as in -li. We avoid problems by 620 simply turning -l into --library. This means that users will 621 have to use two dashes in order to use --library, which is OK 622 since that's how it is documented. 623 624 FIXME: It's possible that this problem can arise for other short 625 options as well, although the user does always have the recourse 626 of adding a space between the option and the argument. */ 627 for (i = 1; i < argc; i++) 628 { 629 if (argv[i][0] == '-' 630 && argv[i][1] == 'l' 631 && argv[i][2] != '\0') 632 { 633 char *n; 634 635 n = xmalloc (strlen (argv[i]) + 20); 636 sprintf (n, "--library=%s", argv[i] + 2); 637 argv[i] = n; 638 } 639 } 640 641 last_optind = -1; 642 while (1) 643 { 644 int longind; 645 int optc; 646 647 /* Using last_optind lets us avoid calling ldemul_parse_args 648 multiple times on a single option, which would lead to 649 confusion in the internal static variables maintained by 650 getopt. This could otherwise happen for an argument like 651 -nx, in which the -n is parsed as a single option, and we 652 loop around to pick up the -x. */ 653 if (optind != last_optind) 654 if (ldemul_parse_args (argc, argv)) 655 continue; 656 657 /* getopt_long_only is like getopt_long, but '-' as well as '--' 658 can indicate a long option. */ 659 opterr = 0; 660 last_optind = optind; 661 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 662 if (optc == '?') 663 { 664 optind = last_optind; 665 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 666 } 667 668 if (ldemul_handle_option (optc)) 669 continue; 670 671 if (optc == -1) 672 break; 673 674 switch (optc) 675 { 676 case '?': 677 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 678 default: 679 einfo (_("%P%F: use the --help option for usage information\n")); 680 681 case 1: /* File name. */ 682 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 683 break; 684 685 case OPTION_IGNORE: 686 break; 687 case 'a': 688 /* For HP/UX compatibility. Actually -a shared should mean 689 ``use only shared libraries'' but, then, we don't 690 currently support shared libraries on HP/UX anyhow. */ 691 if (strcmp (optarg, "archive") == 0) 692 config.dynamic_link = FALSE; 693 else if (strcmp (optarg, "shared") == 0 694 || strcmp (optarg, "default") == 0) 695 config.dynamic_link = TRUE; 696 else 697 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 698 break; 699 case OPTION_ASSERT: 700 /* FIXME: We just ignore these, but we should handle them. */ 701 if (strcmp (optarg, "definitions") == 0) 702 ; 703 else if (strcmp (optarg, "nodefinitions") == 0) 704 ; 705 else if (strcmp (optarg, "nosymbolic") == 0) 706 ; 707 else if (strcmp (optarg, "pure-text") == 0) 708 ; 709 else 710 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 711 break; 712#if defined(__BEOS__) || defined(__HAIKU__) 713 case OPTION_PRIORITY: 714 priority = atol (optarg); 715 break; 716#endif 717 case 'A': 718 ldfile_add_arch (optarg); 719 break; 720 case 'b': 721 lang_add_target (optarg); 722 break; 723 case 'c': 724 ldfile_open_command_file (optarg); 725 parser_input = input_mri_script; 726 yyparse (); 727 break; 728 case OPTION_CALL_SHARED: 729 config.dynamic_link = TRUE; 730 break; 731 case OPTION_NON_SHARED: 732 config.dynamic_link = FALSE; 733 break; 734 case OPTION_CREF: 735 command_line.cref = TRUE; 736 link_info.notice_all = TRUE; 737 break; 738 case 'd': 739 command_line.force_common_definition = TRUE; 740 break; 741 case OPTION_DEFSYM: 742 lex_string = optarg; 743 lex_redirect (optarg); 744 parser_input = input_defsym; 745 parsing_defsym = 1; 746 yyparse (); 747 parsing_defsym = 0; 748 lex_string = NULL; 749 break; 750 case OPTION_DEMANGLE: 751 demangling = TRUE; 752 if (optarg != NULL) 753 { 754 enum demangling_styles style; 755 756 style = cplus_demangle_name_to_style (optarg); 757 if (style == unknown_demangling) 758 einfo (_("%F%P: unknown demangling style `%s'"), 759 optarg); 760 761 cplus_demangle_set_style (style); 762 } 763 break; 764 case 'I': /* Used on Solaris. */ 765 case OPTION_DYNAMIC_LINKER: 766 command_line.interpreter = optarg; 767 break; 768 case OPTION_SYSROOT: 769 /* Already handled in ldmain.c. */ 770 break; 771 case OPTION_EB: 772 command_line.endian = ENDIAN_BIG; 773 break; 774 case OPTION_EL: 775 command_line.endian = ENDIAN_LITTLE; 776 break; 777 case OPTION_EMBEDDED_RELOCS: 778 command_line.embedded_relocs = TRUE; 779 break; 780 case OPTION_EXPORT_DYNAMIC: 781 case 'E': /* HP/UX compatibility. */ 782 link_info.export_dynamic = TRUE; 783 break; 784 case 'e': 785 lang_add_entry (optarg, TRUE); 786 break; 787 case 'f': 788 if (command_line.auxiliary_filters == NULL) 789 { 790 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 791 command_line.auxiliary_filters[0] = optarg; 792 command_line.auxiliary_filters[1] = NULL; 793 } 794 else 795 { 796 int c; 797 char **p; 798 799 c = 0; 800 for (p = command_line.auxiliary_filters; *p != NULL; p++) 801 ++c; 802 command_line.auxiliary_filters 803 = xrealloc (command_line.auxiliary_filters, 804 (c + 2) * sizeof (char *)); 805 command_line.auxiliary_filters[c] = optarg; 806 command_line.auxiliary_filters[c + 1] = NULL; 807 } 808 break; 809 case 'F': 810 command_line.filter_shlib = optarg; 811 break; 812 case OPTION_FORCE_EXE_SUFFIX: 813 command_line.force_exe_suffix = TRUE; 814 break; 815 case 'G': 816 { 817 char *end; 818 g_switch_value = strtoul (optarg, &end, 0); 819 if (*end) 820 einfo (_("%P%F: invalid number `%s'\n"), optarg); 821 } 822 break; 823 case 'g': 824 /* Ignore. */ 825 break; 826 case OPTION_GC_SECTIONS: 827 link_info.gc_sections = TRUE; 828 break; 829 case OPTION_HELP: 830 help (); 831 xexit (0); 832 break; 833 case 'L': 834 ldfile_add_library_path (optarg, TRUE); 835 break; 836 case 'l': 837 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 838 break; 839 case 'M': 840 config.map_filename = "-"; 841 break; 842 case 'm': 843 /* Ignore. Was handled in a pre-parse. */ 844 break; 845 case OPTION_MAP: 846 config.map_filename = optarg; 847 break; 848 case 'N': 849 config.text_read_only = FALSE; 850 config.magic_demand_paged = FALSE; 851 config.dynamic_link = FALSE; 852 break; 853 case OPTION_NO_OMAGIC: 854 config.text_read_only = TRUE; 855 config.magic_demand_paged = TRUE; 856 /* NB/ Does not set dynamic_link to TRUE. 857 Use --call-shared or -Bdynamic for this. */ 858 break; 859 case 'n': 860 config.magic_demand_paged = FALSE; 861 config.dynamic_link = FALSE; 862 break; 863 case OPTION_NO_DEFINE_COMMON: 864 command_line.inhibit_common_definition = TRUE; 865 break; 866 case OPTION_NO_DEMANGLE: 867 demangling = FALSE; 868 break; 869 case OPTION_NO_GC_SECTIONS: 870 link_info.gc_sections = FALSE; 871 break; 872 case OPTION_NO_KEEP_MEMORY: 873 link_info.keep_memory = FALSE; 874 break; 875 case OPTION_NO_UNDEFINED: 876 link_info.unresolved_syms_in_objects 877 = how_to_report_unresolved_symbols; 878 break; 879 case OPTION_ALLOW_SHLIB_UNDEFINED: 880 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 881 break; 882 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 883 link_info.unresolved_syms_in_shared_libs 884 = how_to_report_unresolved_symbols; 885 break; 886 case OPTION_UNRESOLVED_SYMBOLS: 887 if (strcmp (optarg, "ignore-all") == 0) 888 { 889 link_info.unresolved_syms_in_objects = RM_IGNORE; 890 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 891 } 892 else if (strcmp (optarg, "report-all") == 0) 893 { 894 link_info.unresolved_syms_in_objects 895 = how_to_report_unresolved_symbols; 896 link_info.unresolved_syms_in_shared_libs 897 = how_to_report_unresolved_symbols; 898 } 899 else if (strcmp (optarg, "ignore-in-object-files") == 0) 900 { 901 link_info.unresolved_syms_in_objects = RM_IGNORE; 902 link_info.unresolved_syms_in_shared_libs 903 = how_to_report_unresolved_symbols; 904 } 905 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 906 { 907 link_info.unresolved_syms_in_objects 908 = how_to_report_unresolved_symbols; 909 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 910 } 911 else 912 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 913 break; 914 case OPTION_WARN_UNRESOLVED_SYMBOLS: 915 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 916 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 917 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 918 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 919 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 920 break; 921 922 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 923 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 924 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 925 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 926 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 927 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 928 break; 929 case OPTION_ALLOW_MULTIPLE_DEFINITION: 930 link_info.allow_multiple_definition = TRUE; 931 break; 932 case OPTION_NO_UNDEFINED_VERSION: 933 link_info.allow_undefined_version = FALSE; 934 break; 935 case OPTION_DEFAULT_SYMVER: 936 link_info.create_default_symver = TRUE; 937 break; 938 case OPTION_DEFAULT_IMPORTED_SYMVER: 939 link_info.default_imported_symver = TRUE; 940 break; 941 case OPTION_NO_WARN_MISMATCH: 942 command_line.warn_mismatch = FALSE; 943 break; 944 case OPTION_NOINHIBIT_EXEC: 945 force_make_executable = TRUE; 946 break; 947 case OPTION_NOSTDLIB: 948 config.only_cmd_line_lib_dirs = TRUE; 949 break; 950 case OPTION_NO_WHOLE_ARCHIVE: 951 whole_archive = FALSE; 952 break; 953 case 'O': 954 /* FIXME "-O<non-digits> <value>" used to set the address of 955 section <non-digits>. Was this for compatibility with 956 something, or can we create a new option to do that 957 (with a syntax similar to -defsym)? 958 getopt can't handle two args to an option without kludges. */ 959 960 /* Enable optimizations of output files. */ 961 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 962 break; 963 case 'o': 964 lang_add_output (optarg, 0); 965 break; 966 case OPTION_OFORMAT: 967 lang_add_output_format (optarg, NULL, NULL, 0); 968 break; 969 case 'q': 970 link_info.emitrelocations = TRUE; 971 break; 972 case 'i': 973 case 'r': 974 if (optind == last_optind) 975 /* This can happen if the user put "-rpath,a" on the command 976 line. (Or something similar. The comma is important). 977 Getopt becomes confused and thinks that this is a -r option 978 but it cannot parse the text after the -r so it refuses to 979 increment the optind counter. Detect this case and issue 980 an error message here. We cannot just make this a warning, 981 increment optind, and continue because getopt is too confused 982 and will seg-fault the next time around. */ 983 einfo(_("%P%F: bad -rpath option\n")); 984 985 link_info.relocatable = TRUE; 986 config.build_constructors = FALSE; 987 config.magic_demand_paged = FALSE; 988 config.text_read_only = FALSE; 989 config.dynamic_link = FALSE; 990 break; 991 case 'R': 992 /* The GNU linker traditionally uses -R to mean to include 993 only the symbols from a file. The Solaris linker uses -R 994 to set the path used by the runtime linker to find 995 libraries. This is the GNU linker -rpath argument. We 996 try to support both simultaneously by checking the file 997 named. If it is a directory, rather than a regular file, 998 we assume -rpath was meant. */ 999 { 1000 struct stat s; 1001 1002 if (stat (optarg, &s) >= 0 1003 && ! S_ISDIR (s.st_mode)) 1004 { 1005 lang_add_input_file (optarg, 1006 lang_input_file_is_symbols_only_enum, 1007 NULL); 1008 break; 1009 } 1010 } 1011 /* Fall through. */ 1012 case OPTION_RPATH: 1013 if (command_line.rpath == NULL) 1014 command_line.rpath = xstrdup (optarg); 1015 else 1016 { 1017 size_t rpath_len = strlen (command_line.rpath); 1018 size_t optarg_len = strlen (optarg); 1019 char *buf; 1020 char *cp = command_line.rpath; 1021 1022 /* First see whether OPTARG is already in the path. */ 1023 do 1024 { 1025 size_t idx = 0; 1026 1027 while (optarg[idx] != '\0' && optarg[idx] == cp[idx]) 1028 ++idx; 1029 if (optarg[idx] == '\0' 1030 && (cp[idx] == '\0' || cp[idx] == ':')) 1031 /* We found it. */ 1032 break; 1033 1034 /* Not yet found. */ 1035 cp = strchr (cp, ':'); 1036 if (cp != NULL) 1037 ++cp; 1038 } 1039 while (cp != NULL); 1040 1041 if (cp == NULL) 1042 { 1043 buf = xmalloc (rpath_len + optarg_len + 2); 1044 sprintf (buf, "%s:%s", command_line.rpath, optarg); 1045 free (command_line.rpath); 1046 command_line.rpath = buf; 1047 } 1048 } 1049 break; 1050 case OPTION_RPATH_LINK: 1051 if (command_line.rpath_link == NULL) 1052 command_line.rpath_link = xstrdup (optarg); 1053 else 1054 { 1055 char *buf; 1056 1057 buf = xmalloc (strlen (command_line.rpath_link) 1058 + strlen (optarg) 1059 + 2); 1060 sprintf (buf, "%s:%s", command_line.rpath_link, optarg); 1061 free (command_line.rpath_link); 1062 command_line.rpath_link = buf; 1063 } 1064 break; 1065 case OPTION_RELAX: 1066 command_line.relax = TRUE; 1067 break; 1068 case OPTION_RETAIN_SYMBOLS_FILE: 1069 add_keepsyms_file (optarg); 1070 break; 1071 case 'S': 1072 link_info.strip = strip_debugger; 1073 break; 1074 case 's': 1075 link_info.strip = strip_all; 1076 break; 1077 case OPTION_STRIP_DISCARDED: 1078 link_info.strip_discarded = TRUE; 1079 break; 1080 case OPTION_NO_STRIP_DISCARDED: 1081 link_info.strip_discarded = FALSE; 1082 break; 1083 case OPTION_SHARED: 1084 if (config.has_shared) 1085 { 1086 link_info.shared = TRUE; 1087 /* When creating a shared library, the default 1088 behaviour is to ignore any unresolved references. */ 1089 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1090 link_info.unresolved_syms_in_objects = RM_IGNORE; 1091 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1092 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1093 } 1094 else 1095 einfo (_("%P%F: -shared not supported\n")); 1096 break; 1097 case OPTION_PIE: 1098 if (config.has_shared) 1099 { 1100 link_info.shared = TRUE; 1101 link_info.pie = TRUE; 1102 } 1103 else 1104 einfo (_("%P%F: -pie not supported\n")); 1105 break; 1106 case 'h': /* Used on Solaris. */ 1107 case OPTION_SONAME: 1108 command_line.soname = optarg; 1109 break; 1110 case OPTION_SORT_COMMON: 1111 config.sort_common = TRUE; 1112 break; 1113 case OPTION_SORT_SECTION: 1114 if (strcmp (optarg, N_("name")) == 0) 1115 sort_section = by_name; 1116 else if (strcmp (optarg, N_("alignment")) == 0) 1117 sort_section = by_alignment; 1118 else 1119 einfo (_("%P%F: invalid section sorting option: %s\n"), 1120 optarg); 1121 break; 1122 case OPTION_STATS: 1123 config.stats = TRUE; 1124 break; 1125 case OPTION_SYMBOLIC: 1126 link_info.symbolic = TRUE; 1127 break; 1128 case 't': 1129 trace_files = TRUE; 1130 break; 1131 case 'T': 1132 ldfile_open_command_file (optarg); 1133 parser_input = input_script; 1134 yyparse (); 1135 break; 1136 case OPTION_SECTION_START: 1137 { 1138 char *optarg2; 1139 char *sec_name; 1140 int len; 1141 1142 /* Check for <something>=<somthing>... */ 1143 optarg2 = strchr (optarg, '='); 1144 if (optarg2 == NULL) 1145 einfo (_("%P%F: invalid argument to option" 1146 " \"--section-start\"\n")); 1147 1148 optarg2++; 1149 1150 /* So far so good. Are all the args present? */ 1151 if ((*optarg == '\0') || (*optarg2 == '\0')) 1152 einfo (_("%P%F: missing argument(s) to option" 1153 " \"--section-start\"\n")); 1154 1155 /* We must copy the section name as set_section_start 1156 doesn't do it for us. */ 1157 len = optarg2 - optarg; 1158 sec_name = xmalloc (len); 1159 memcpy (sec_name, optarg, len - 1); 1160 sec_name[len - 1] = 0; 1161 1162 /* Then set it... */ 1163 set_section_start (sec_name, optarg2); 1164 } 1165 break; 1166 case OPTION_TARGET_HELP: 1167 /* Mention any target specific options. */ 1168 ldemul_list_emulation_options (stdout); 1169 exit (0); 1170 case OPTION_TBSS: 1171 set_segment_start (".bss", optarg); 1172 break; 1173 case OPTION_TDATA: 1174 set_segment_start (".data", optarg); 1175 break; 1176 case OPTION_TTEXT: 1177 set_segment_start (".text", optarg); 1178 break; 1179 case OPTION_TRADITIONAL_FORMAT: 1180 link_info.traditional_format = TRUE; 1181 break; 1182 case OPTION_TASK_LINK: 1183 link_info.task_link = TRUE; 1184 /* Fall through - do an implied -r option. */ 1185 case OPTION_UR: 1186 link_info.relocatable = TRUE; 1187 config.build_constructors = TRUE; 1188 config.magic_demand_paged = FALSE; 1189 config.text_read_only = FALSE; 1190 config.dynamic_link = FALSE; 1191 break; 1192 case 'u': 1193 ldlang_add_undef (optarg); 1194 break; 1195 case OPTION_UNIQUE: 1196 if (optarg != NULL) 1197 lang_add_unique (optarg); 1198 else 1199 config.unique_orphan_sections = TRUE; 1200 break; 1201 case OPTION_VERBOSE: 1202 ldversion (1); 1203 version_printed = TRUE; 1204 trace_file_tries = TRUE; 1205 overflow_cutoff_limit = -2; 1206 break; 1207 case 'v': 1208 ldversion (0); 1209 version_printed = TRUE; 1210 break; 1211 case 'V': 1212 ldversion (1); 1213 version_printed = TRUE; 1214 break; 1215 case OPTION_VERSION: 1216 ldversion (2); 1217 xexit (0); 1218 break; 1219 case OPTION_VERSION_SCRIPT: 1220 /* This option indicates a small script that only specifies 1221 version information. Read it, but don't assume that 1222 we've seen a linker script. */ 1223 { 1224 FILE *hold_script_handle; 1225 1226 hold_script_handle = saved_script_handle; 1227 ldfile_open_command_file (optarg); 1228 saved_script_handle = hold_script_handle; 1229 parser_input = input_version_script; 1230 yyparse (); 1231 } 1232 break; 1233 case OPTION_VERSION_EXPORTS_SECTION: 1234 /* This option records a version symbol to be applied to the 1235 symbols listed for export to be found in the object files 1236 .exports sections. */ 1237 command_line.version_exports_section = optarg; 1238 break; 1239 case OPTION_WARN_COMMON: 1240 config.warn_common = TRUE; 1241 break; 1242 case OPTION_WARN_CONSTRUCTORS: 1243 config.warn_constructors = TRUE; 1244 break; 1245 case OPTION_WARN_FATAL: 1246 config.fatal_warnings = TRUE; 1247 break; 1248 case OPTION_WARN_MULTIPLE_GP: 1249 config.warn_multiple_gp = TRUE; 1250 break; 1251 case OPTION_WARN_ONCE: 1252 config.warn_once = TRUE; 1253 break; 1254 case OPTION_WARN_SECTION_ALIGN: 1255 config.warn_section_align = TRUE; 1256 break; 1257 case OPTION_WARN_SHARED_TEXTREL: 1258 link_info.warn_shared_textrel = TRUE; 1259 break; 1260 case OPTION_WHOLE_ARCHIVE: 1261 whole_archive = TRUE; 1262 break; 1263 case OPTION_ADD_NEEDED: 1264 add_needed = TRUE; 1265 break; 1266 case OPTION_NO_ADD_NEEDED: 1267 add_needed = FALSE; 1268 break; 1269 case OPTION_AS_NEEDED: 1270 as_needed = TRUE; 1271 break; 1272 case OPTION_NO_AS_NEEDED: 1273 as_needed = FALSE; 1274 break; 1275 case OPTION_WRAP: 1276 add_wrap (optarg); 1277 break; 1278 case OPTION_DISCARD_NONE: 1279 link_info.discard = discard_none; 1280 break; 1281 case 'X': 1282 link_info.discard = discard_l; 1283 break; 1284 case 'x': 1285 link_info.discard = discard_all; 1286 break; 1287 case 'Y': 1288 if (strncmp (optarg, "P,", 2) == 0) 1289 optarg += 2; 1290 if (default_dirlist != NULL) 1291 free (default_dirlist); 1292 default_dirlist = xstrdup (optarg); 1293 break; 1294 case 'y': 1295 add_ysym (optarg); 1296 break; 1297 case OPTION_SPARE_DYNAMIC_TAGS: 1298 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1299 break; 1300 case OPTION_SPLIT_BY_RELOC: 1301 if (optarg != NULL) 1302 config.split_by_reloc = strtoul (optarg, NULL, 0); 1303 else 1304 config.split_by_reloc = 32768; 1305 break; 1306 case OPTION_SPLIT_BY_FILE: 1307 if (optarg != NULL) 1308 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1309 else 1310 config.split_by_file = 1; 1311 break; 1312 case OPTION_CHECK_SECTIONS: 1313 command_line.check_section_addresses = TRUE; 1314 break; 1315 case OPTION_NO_CHECK_SECTIONS: 1316 command_line.check_section_addresses = FALSE; 1317 break; 1318 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1319 command_line.accept_unknown_input_arch = TRUE; 1320 break; 1321 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1322 command_line.accept_unknown_input_arch = FALSE; 1323 break; 1324 case '(': 1325 if (ingroup) 1326 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1327 1328 lang_enter_group (); 1329 ingroup = 1; 1330 break; 1331 case ')': 1332 if (! ingroup) 1333 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1334 1335 lang_leave_group (); 1336 ingroup = 0; 1337 break; 1338 1339 case OPTION_INIT: 1340 link_info.init_function = optarg; 1341 break; 1342 1343 case OPTION_FINI: 1344 link_info.fini_function = optarg; 1345 break; 1346 1347 case OPTION_REDUCE_MEMORY_OVERHEADS: 1348 command_line.reduce_memory_overheads = TRUE; 1349 if (config.hash_table_size == 0) 1350 config.hash_table_size = 1021; 1351 break; 1352 1353 case OPTION_HASH_SIZE: 1354 { 1355 bfd_size_type new_size; 1356 1357 new_size = strtoul (optarg, NULL, 0); 1358 if (new_size) 1359 config.hash_table_size = new_size; 1360 else 1361 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1362 } 1363 break; 1364 } 1365 } 1366 1367#if defined(__BEOS__) || defined(__HAIKU__) 1368 set_thread_priority (find_thread(NULL), priority); 1369#endif 1370 1371 if (ingroup) 1372 lang_leave_group (); 1373 1374 if (default_dirlist != NULL) 1375 { 1376 set_default_dirlist (default_dirlist); 1377 free (default_dirlist); 1378 } 1379 1380 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1381 /* FIXME: Should we allow emulations a chance to set this ? */ 1382 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1383 1384 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1385 /* FIXME: Should we allow emulations a chance to set this ? */ 1386 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1387} 1388 1389/* Add the (colon-separated) elements of DIRLIST_PTR to the 1390 library search path. */ 1391 1392static void 1393set_default_dirlist (char *dirlist_ptr) 1394{ 1395 char *p; 1396 1397 while (1) 1398 { 1399 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1400 if (p != NULL) 1401 *p = '\0'; 1402 if (*dirlist_ptr != '\0') 1403 ldfile_add_library_path (dirlist_ptr, TRUE); 1404 if (p == NULL) 1405 break; 1406 dirlist_ptr = p + 1; 1407 } 1408} 1409 1410static void 1411set_section_start (char *sect, char *valstr) 1412{ 1413 const char *end; 1414 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1415 if (*end) 1416 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1417 lang_section_start (sect, exp_intop (val), NULL); 1418} 1419 1420static void 1421set_segment_start (const char *section, char *valstr) 1422{ 1423 const char *name; 1424 const char *end; 1425 segment_type *seg; 1426 1427 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1428 if (*end) 1429 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1430 /* If we already have an entry for this segment, update the existing 1431 value. */ 1432 name = section + 1; 1433 for (seg = segments; seg; seg = seg->next) 1434 if (strcmp (seg->name, name) == 0) 1435 { 1436 seg->value = val; 1437 return; 1438 } 1439 /* There was no existing value so we must create a new segment 1440 entry. */ 1441 seg = stat_alloc (sizeof (*seg)); 1442 seg->name = name; 1443 seg->value = val; 1444 seg->used = FALSE; 1445 /* Add it to the linked list of segments. */ 1446 seg->next = segments; 1447 segments = seg; 1448 /* Historically, -Ttext and friends set the base address of a 1449 particular section. For backwards compatibility, we still do 1450 that. If a SEGMENT_START directive is seen, the section address 1451 assignment will be disabled. */ 1452 lang_section_start (section, exp_intop (val), seg); 1453} 1454 1455 1456/* Print help messages for the options. */ 1457 1458static void 1459help (void) 1460{ 1461 unsigned i; 1462 const char **targets, **pp; 1463 int len; 1464 1465 printf (_("Usage: %s [options] file...\n"), program_name); 1466 1467 printf (_("Options:\n")); 1468 for (i = 0; i < OPTION_COUNT; i++) 1469 { 1470 if (ld_options[i].doc != NULL) 1471 { 1472 bfd_boolean comma; 1473 unsigned j; 1474 1475 printf (" "); 1476 1477 comma = FALSE; 1478 len = 2; 1479 1480 j = i; 1481 do 1482 { 1483 if (ld_options[j].shortopt != '\0' 1484 && ld_options[j].control != NO_HELP) 1485 { 1486 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1487 len += (comma ? 2 : 0) + 2; 1488 if (ld_options[j].arg != NULL) 1489 { 1490 if (ld_options[j].opt.has_arg != optional_argument) 1491 { 1492 printf (" "); 1493 ++len; 1494 } 1495 printf ("%s", _(ld_options[j].arg)); 1496 len += strlen (_(ld_options[j].arg)); 1497 } 1498 comma = TRUE; 1499 } 1500 ++j; 1501 } 1502 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1503 1504 j = i; 1505 do 1506 { 1507 if (ld_options[j].opt.name != NULL 1508 && ld_options[j].control != NO_HELP) 1509 { 1510 int two_dashes = 1511 (ld_options[j].control == TWO_DASHES 1512 || ld_options[j].control == EXACTLY_TWO_DASHES); 1513 1514 printf ("%s-%s%s", 1515 comma ? ", " : "", 1516 two_dashes ? "-" : "", 1517 ld_options[j].opt.name); 1518 len += ((comma ? 2 : 0) 1519 + 1 1520 + (two_dashes ? 1 : 0) 1521 + strlen (ld_options[j].opt.name)); 1522 if (ld_options[j].arg != NULL) 1523 { 1524 printf (" %s", _(ld_options[j].arg)); 1525 len += 1 + strlen (_(ld_options[j].arg)); 1526 } 1527 comma = TRUE; 1528 } 1529 ++j; 1530 } 1531 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1532 1533 if (len >= 30) 1534 { 1535 printf ("\n"); 1536 len = 0; 1537 } 1538 1539 for (; len < 30; len++) 1540 putchar (' '); 1541 1542 printf ("%s\n", _(ld_options[i].doc)); 1543 } 1544 } 1545 printf (_(" @FILE")); 1546 for (len = strlen (" @FILE"); len < 30; len++) 1547 putchar (' '); 1548 printf (_("Read options from FILE\n")); 1549 1550 /* Note: Various tools (such as libtool) depend upon the 1551 format of the listings below - do not change them. */ 1552 /* xgettext:c-format */ 1553 printf (_("%s: supported targets:"), program_name); 1554 targets = bfd_target_list (); 1555 for (pp = targets; *pp != NULL; pp++) 1556 printf (" %s", *pp); 1557 free (targets); 1558 printf ("\n"); 1559 1560 /* xgettext:c-format */ 1561 printf (_("%s: supported emulations: "), program_name); 1562 ldemul_list_emulations (stdout); 1563 printf ("\n"); 1564 1565 /* xgettext:c-format */ 1566 printf (_("%s: emulation specific options:\n"), program_name); 1567 ldemul_list_emulation_options (stdout); 1568 printf ("\n"); 1569 1570 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1571} 1572