1/* Parse options for the GNU linker. 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004 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, 59 Temple Place - Suite 330, Boston, MA 21 02111-1307, USA. */ 22 23#include "bfd.h" 24#include "sysdep.h" 25#include "libiberty.h" 26#include <stdio.h> 27#include <string.h> 28#include "safe-ctype.h" 29#include "getopt.h" 30#include "bfdlink.h" 31#include "ld.h" 32#include "ldmain.h" 33#include "ldmisc.h" 34#include "ldexp.h" 35#include "ldlang.h" 36#include <ldgram.h> 37#include "ldlex.h" 38#include "ldfile.h" 39#include "ldver.h" 40#include "ldemul.h" 41#include "demangle.h" 42 43#ifndef PATH_SEPARATOR 44#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 45#define PATH_SEPARATOR ';' 46#else 47#define PATH_SEPARATOR ':' 48#endif 49#endif 50 51/* Somewhere above, sys/stat.h got included . . . . */ 52#if !defined(S_ISDIR) && defined(S_IFDIR) 53#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 54#endif 55 56static void set_default_dirlist (char *); 57static void set_section_start (char *, char *); 58static void help (void); 59 60/* Non-zero if we are processing a --defsym from the command line. */ 61int parsing_defsym = 0; 62 63/* Codes used for the long options with no short synonyms. 150 isn't 64 special; it's just an arbitrary non-ASCII char value. */ 65enum option_values 66{ 67 OPTION_ASSERT = 150, 68 OPTION_CALL_SHARED, 69 OPTION_CREF, 70 OPTION_DEFSYM, 71 OPTION_DEMANGLE, 72 OPTION_DYNAMIC_LINKER, 73 OPTION_EB, 74 OPTION_EL, 75 OPTION_EMBEDDED_RELOCS, 76 OPTION_EXPORT_DYNAMIC, 77 OPTION_HELP, 78 OPTION_IGNORE, 79 OPTION_MAP, 80 OPTION_NO_DEMANGLE, 81 OPTION_NO_KEEP_MEMORY, 82 OPTION_NO_WARN_MISMATCH, 83 OPTION_NOINHIBIT_EXEC, 84 OPTION_NON_SHARED, 85 OPTION_NO_WHOLE_ARCHIVE, 86 OPTION_OFORMAT, 87 OPTION_RELAX, 88 OPTION_RETAIN_SYMBOLS_FILE, 89 OPTION_RPATH, 90 OPTION_RPATH_LINK, 91 OPTION_SHARED, 92 OPTION_SONAME, 93 OPTION_SORT_COMMON, 94 OPTION_STATS, 95 OPTION_SYMBOLIC, 96 OPTION_TASK_LINK, 97 OPTION_TBSS, 98 OPTION_TDATA, 99 OPTION_TTEXT, 100 OPTION_TRADITIONAL_FORMAT, 101 OPTION_UR, 102 OPTION_VERBOSE, 103 OPTION_VERSION, 104 OPTION_VERSION_SCRIPT, 105 OPTION_VERSION_EXPORTS_SECTION, 106 OPTION_WARN_COMMON, 107 OPTION_WARN_CONSTRUCTORS, 108 OPTION_WARN_FATAL, 109 OPTION_WARN_MULTIPLE_GP, 110 OPTION_WARN_ONCE, 111 OPTION_WARN_SECTION_ALIGN, 112 OPTION_SPLIT_BY_RELOC, 113 OPTION_SPLIT_BY_FILE , 114 OPTION_WHOLE_ARCHIVE, 115 OPTION_AS_NEEDED, 116 OPTION_NO_AS_NEEDED, 117 OPTION_WRAP, 118 OPTION_FORCE_EXE_SUFFIX, 119 OPTION_GC_SECTIONS, 120 OPTION_NO_GC_SECTIONS, 121 OPTION_CHECK_SECTIONS, 122 OPTION_NO_CHECK_SECTIONS, 123 OPTION_NO_UNDEFINED, 124 OPTION_INIT, 125 OPTION_FINI, 126 OPTION_SECTION_START, 127 OPTION_UNIQUE, 128 OPTION_TARGET_HELP, 129 OPTION_ALLOW_SHLIB_UNDEFINED, 130 OPTION_NO_ALLOW_SHLIB_UNDEFINED, 131 OPTION_ALLOW_MULTIPLE_DEFINITION, 132 OPTION_NO_UNDEFINED_VERSION, 133 OPTION_DISCARD_NONE, 134 OPTION_SPARE_DYNAMIC_TAGS, 135 OPTION_NO_DEFINE_COMMON, 136 OPTION_NOSTDLIB, 137 OPTION_NO_OMAGIC, 138 OPTION_STRIP_DISCARDED, 139 OPTION_NO_STRIP_DISCARDED, 140 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, 141 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, 142 OPTION_PIE, 143 OPTION_NOPIE, 144 OPTION_UNRESOLVED_SYMBOLS, 145 OPTION_WARN_UNRESOLVED_SYMBOLS, 146 OPTION_ERROR_UNRESOLVED_SYMBOLS 147}; 148 149/* The long options. This structure is used for both the option 150 parsing and the help text. */ 151 152struct ld_option 153{ 154 /* The long option information. */ 155 struct option opt; 156 /* The short option with the same meaning ('\0' if none). */ 157 char shortopt; 158 /* The name of the argument (NULL if none). */ 159 const char *arg; 160 /* The documentation string. If this is NULL, this is a synonym for 161 the previous option. */ 162 const char *doc; 163 enum { 164 /* Use one dash before long option name. */ 165 ONE_DASH, 166 /* Use two dashes before long option name. */ 167 TWO_DASHES, 168 /* Only accept two dashes before the long option name. 169 This is an overloading of the use of this enum, since originally it 170 was only intended to tell the --help display function how to display 171 the long option name. This feature was added in order to resolve 172 the confusion about the -omagic command line switch. Is it setting 173 the output file name to "magic" or is it setting the NMAGIC flag on 174 the output ? It has been decided that it is setting the output file 175 name, and that if you want to set the NMAGIC flag you should use -N 176 or --omagic. */ 177 EXACTLY_TWO_DASHES, 178 /* Don't mention this option in --help output. */ 179 NO_HELP 180 } control; 181}; 182 183static const struct ld_option ld_options[] = 184{ 185 { {NULL, required_argument, NULL, '\0'}, 186 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 187 ONE_DASH }, 188 { {"architecture", required_argument, NULL, 'A'}, 189 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 190 { {"format", required_argument, NULL, 'b'}, 191 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES }, 192 { {"mri-script", required_argument, NULL, 'c'}, 193 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 194 { {"dc", no_argument, NULL, 'd'}, 195 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 196 { {"dp", no_argument, NULL, 'd'}, 197 '\0', NULL, NULL, ONE_DASH }, 198 { {"entry", required_argument, NULL, 'e'}, 199 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 200 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 201 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 202 { {"EB", no_argument, NULL, OPTION_EB}, 203 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 204 { {"EL", no_argument, NULL, OPTION_EL}, 205 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 206 { {"auxiliary", required_argument, NULL, 'f'}, 207 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 208 TWO_DASHES }, 209 { {"filter", required_argument, NULL, 'F'}, 210 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES }, 211 { {NULL, no_argument, NULL, '\0'}, 212 'g', NULL, N_("Ignored"), ONE_DASH }, 213 { {"gpsize", required_argument, NULL, 'G'}, 214 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 215 TWO_DASHES }, 216 { {"soname", required_argument, NULL, OPTION_SONAME}, 217 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 218 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 219 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES }, 220 { {"library", required_argument, NULL, 'l'}, 221 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 222 { {"library-path", required_argument, NULL, 'L'}, 223 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES }, 224 { {NULL, required_argument, NULL, '\0'}, 225 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 226 { {"print-map", no_argument, NULL, 'M'}, 227 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 228 { {"nmagic", no_argument, NULL, 'n'}, 229 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 230 { {"omagic", no_argument, NULL, 'N'}, 231 'N', NULL, N_("Do not page align data, do not make text readonly"), 232 EXACTLY_TWO_DASHES }, 233 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 234 '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES }, 235 { {"output", required_argument, NULL, 'o'}, 236 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 237 { {NULL, required_argument, NULL, '\0'}, 238 'O', NULL, N_("Optimize output file"), ONE_DASH }, 239 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 240 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 241 { {"emit-relocs", no_argument, NULL, 'q'}, 242 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 243 { {"relocatable", no_argument, NULL, 'r'}, 244 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 245 { {NULL, no_argument, NULL, '\0'}, 246 'i', NULL, NULL, ONE_DASH }, 247 { {"just-symbols", required_argument, NULL, 'R'}, 248 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 249 TWO_DASHES }, 250 { {"strip-all", no_argument, NULL, 's'}, 251 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 252 { {"strip-debug", no_argument, NULL, 'S'}, 253 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 254 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 255 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 256 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 257 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 258 { {"trace", no_argument, NULL, 't'}, 259 't', NULL, N_("Trace file opens"), TWO_DASHES }, 260 { {"script", required_argument, NULL, 'T'}, 261 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 262 { {"undefined", required_argument, NULL, 'u'}, 263 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES }, 264 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 265 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 266 { {"Ur", no_argument, NULL, OPTION_UR}, 267 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 268 { {"version", no_argument, NULL, OPTION_VERSION}, 269 'v', NULL, N_("Print version information"), TWO_DASHES }, 270 { {NULL, no_argument, NULL, '\0'}, 271 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 272 { {"discard-all", no_argument, NULL, 'x'}, 273 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 274 { {"discard-locals", no_argument, NULL, 'X'}, 275 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 276 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 277 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 278 { {"trace-symbol", required_argument, NULL, 'y'}, 279 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 280 { {NULL, required_argument, NULL, '\0'}, 281 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH }, 282 { {"Zmagic", no_argument, NULL, 'Z'}, 283 'Z', NULL, N_("Do not page align got/plt, old style executable"), 284 EXACTLY_TWO_DASHES }, 285 { {"start-group", no_argument, NULL, '('}, 286 '(', NULL, N_("Start a group"), TWO_DASHES }, 287 { {"end-group", no_argument, NULL, ')'}, 288 ')', NULL, N_("End a group"), TWO_DASHES }, 289 { {"accept-unknown-input-arch", no_argument, NULL, OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 290 '\0', NULL, N_("Accept input files whose architecture cannot be determined"), TWO_DASHES }, 291 { {"no-accept-unknown-input-arch", no_argument, NULL, OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 292 '\0', NULL, N_("Reject input files whose architecture is unknown"), TWO_DASHES }, 293 { {"assert", required_argument, NULL, OPTION_ASSERT}, 294 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 295 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 296 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 297 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 298 '\0', NULL, NULL, ONE_DASH }, 299 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 300 '\0', NULL, NULL, ONE_DASH }, 301 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 302 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 303 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 304 '\0', NULL, NULL, ONE_DASH }, 305 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 306 '\0', NULL, NULL, ONE_DASH }, 307 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 308 '\0', NULL, NULL, ONE_DASH }, 309 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 310 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 311 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 312 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES }, 313 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 314 '\0', NULL, N_("Do not check section addresses for overlaps"), 315 TWO_DASHES }, 316 { {"cref", no_argument, NULL, OPTION_CREF}, 317 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 318 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 319 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 320 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 321 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES }, 322 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 323 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 324 { {"fini", required_argument, NULL, OPTION_FINI}, 325 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 326 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 327 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 328 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 329 '\0', NULL, N_("Remove unused sections (on some targets)"), 330 TWO_DASHES }, 331 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 332 '\0', NULL, N_("Don't remove unused sections (default)"), 333 TWO_DASHES }, 334 { {"help", no_argument, NULL, OPTION_HELP}, 335 '\0', NULL, N_("Print option help"), TWO_DASHES }, 336 { {"init", required_argument, NULL, OPTION_INIT}, 337 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 338 { {"Map", required_argument, NULL, OPTION_MAP}, 339 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 340 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 341 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 342 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 343 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 344 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 345 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 346 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 347 '\0', NULL, N_("Do not allow unresolved references in object files"), TWO_DASHES }, 348 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 349 '\0', NULL, N_("Allow unresolved references in shared libaries"), TWO_DASHES }, 350 { {"no-allow-shlib-undefined", no_argument, NULL, OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 351 '\0', NULL, N_("Do not allow unresolved references in shared libs"), TWO_DASHES }, 352 { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION}, 353 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 354 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 355 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 356 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 357 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 358 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 359 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 360 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 361 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES }, 362 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 363 '\0', NULL, NULL, NO_HELP }, 364 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 365 '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH }, 366 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 367 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES }, 368 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 369 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 370 { {"relax", no_argument, NULL, OPTION_RELAX}, 371 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 372 { {"retain-symbols-file", required_argument, NULL, 373 OPTION_RETAIN_SYMBOLS_FILE}, 374 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 375 { {"rpath", required_argument, NULL, OPTION_RPATH}, 376 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 377 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 378 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH }, 379 { {"shared", no_argument, NULL, OPTION_SHARED}, 380 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 381 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 382 '\0', NULL, NULL, ONE_DASH }, 383 { {"pie", no_argument, NULL, OPTION_PIE}, 384 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 385 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 386 '\0', NULL, NULL, TWO_DASHES }, 387 { {"nopie", no_argument, NULL, OPTION_NOPIE}, 388 '\0', NULL, N_("Do not create a position independent executable"), ONE_DASH }, 389 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, 390 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, 391 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 392 '\0', NULL, NULL, NO_HELP }, 393 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 394 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES }, 395 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 396 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES }, 397 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 398 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES }, 399 { {"stats", no_argument, NULL, OPTION_STATS}, 400 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 401 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 402 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 403 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 404 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 405 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 406 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 407 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 408 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES }, 409 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 410 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 411 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 412 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 413 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 414 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 415 { {"unresolved-symbols=<method>", required_argument, NULL, OPTION_UNRESOLVED_SYMBOLS}, 416 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n\t\t\t\tignore-all, report-all, ignore-in-object-files,\n\t\t\t\tignore-in-shared-libs"), 417 TWO_DASHES }, 418 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 419 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 420 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 421 '\0', NULL, NULL, NO_HELP }, 422 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 423 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 424 { {"version-exports-section", required_argument, NULL, 425 OPTION_VERSION_EXPORTS_SECTION }, 426 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."), 427 TWO_DASHES }, 428 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 429 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 430 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 431 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 432 TWO_DASHES }, 433 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 434 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 435 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 436 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 437 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 438 '\0', NULL, N_("Warn if start of section changes due to alignment"), 439 TWO_DASHES }, 440 { {"warn-unresolved-symbols", no_argument, NULL, OPTION_WARN_UNRESOLVED_SYMBOLS}, 441 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 442 { {"error-unresolved-symbols", no_argument, NULL, OPTION_ERROR_UNRESOLVED_SYMBOLS}, 443 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 444 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 445 '\0', NULL, N_("Treat warnings as errors"), 446 TWO_DASHES }, 447 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 448 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES }, 449 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 450 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), TWO_DASHES }, 451 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 452 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), TWO_DASHES }, 453 { {"wrap", required_argument, NULL, OPTION_WRAP}, 454 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES } 455}; 456 457#define OPTION_COUNT ARRAY_SIZE (ld_options) 458 459void 460parse_args (unsigned argc, char **argv) 461{ 462 unsigned i; 463 int is, il, irl; 464 int ingroup = 0; 465 char *default_dirlist = NULL; 466 char *shortopts; 467 struct option *longopts; 468 struct option *really_longopts; 469 int last_optind; 470 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 471 472 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 473 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 474 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 475 476 /* Starting the short option string with '-' is for programs that 477 expect options and other ARGV-elements in any order and that care about 478 the ordering of the two. We describe each non-option ARGV-element 479 as if it were the argument of an option with character code 1. */ 480 shortopts[0] = '-'; 481 is = 1; 482 il = 0; 483 irl = 0; 484 for (i = 0; i < OPTION_COUNT; i++) 485 { 486 if (ld_options[i].shortopt != '\0') 487 { 488 shortopts[is] = ld_options[i].shortopt; 489 ++is; 490 if (ld_options[i].opt.has_arg == required_argument 491 || ld_options[i].opt.has_arg == optional_argument) 492 { 493 shortopts[is] = ':'; 494 ++is; 495 if (ld_options[i].opt.has_arg == optional_argument) 496 { 497 shortopts[is] = ':'; 498 ++is; 499 } 500 } 501 } 502 if (ld_options[i].opt.name != NULL) 503 { 504 if (ld_options[i].control == EXACTLY_TWO_DASHES) 505 { 506 really_longopts[irl] = ld_options[i].opt; 507 ++irl; 508 } 509 else 510 { 511 longopts[il] = ld_options[i].opt; 512 ++il; 513 } 514 } 515 } 516 shortopts[is] = '\0'; 517 longopts[il].name = NULL; 518 really_longopts[irl].name = NULL; 519 520 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 521 522 /* The -G option is ambiguous on different platforms. Sometimes it 523 specifies the largest data size to put into the small data 524 section. Sometimes it is equivalent to --shared. Unfortunately, 525 the first form takes an argument, while the second does not. 526 527 We need to permit the --shared form because on some platforms, 528 such as Solaris, gcc -shared will pass -G to the linker. 529 530 To permit either usage, we look through the argument list. If we 531 find -G not followed by a number, we change it into --shared. 532 This will work for most normal cases. */ 533 for (i = 1; i < argc; i++) 534 if (strcmp (argv[i], "-G") == 0 535 && (i + 1 >= argc 536 || ! ISDIGIT (argv[i + 1][0]))) 537 argv[i] = (char *) "--shared"; 538 539 /* Because we permit long options to start with a single dash, and 540 we have a --library option, and the -l option is conventionally 541 used with an immediately following argument, we can have bad 542 results if somebody tries to use -l with a library whose name 543 happens to start with "ibrary", as in -li. We avoid problems by 544 simply turning -l into --library. This means that users will 545 have to use two dashes in order to use --library, which is OK 546 since that's how it is documented. 547 548 FIXME: It's possible that this problem can arise for other short 549 options as well, although the user does always have the recourse 550 of adding a space between the option and the argument. */ 551 for (i = 1; i < argc; i++) 552 { 553 if (argv[i][0] == '-' 554 && argv[i][1] == 'l' 555 && argv[i][2] != '\0') 556 { 557 char *n; 558 559 n = xmalloc (strlen (argv[i]) + 20); 560 sprintf (n, "--library=%s", argv[i] + 2); 561 argv[i] = n; 562 } 563 } 564 565 last_optind = -1; 566 while (1) 567 { 568 int longind; 569 int optc; 570 571 /* Using last_optind lets us avoid calling ldemul_parse_args 572 multiple times on a single option, which would lead to 573 confusion in the internal static variables maintained by 574 getopt. This could otherwise happen for an argument like 575 -nx, in which the -n is parsed as a single option, and we 576 loop around to pick up the -x. */ 577 if (optind != last_optind) 578 if (ldemul_parse_args (argc, argv)) 579 continue; 580 581 /* getopt_long_only is like getopt_long, but '-' as well as '--' 582 can indicate a long option. */ 583 opterr = 0; 584 last_optind = optind; 585 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 586 if (optc == '?') 587 { 588 optind = last_optind; 589 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 590 } 591 592 if (ldemul_handle_option (optc)) 593 continue; 594 595 if (optc == -1) 596 break; 597 598 switch (optc) 599 { 600 case '?': 601 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 602 default: 603 einfo (_("%P%F: use the --help option for usage information\n")); 604 605 case 1: /* File name. */ 606 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 607 break; 608 609 case OPTION_IGNORE: 610 break; 611 case 'a': 612 /* For HP/UX compatibility. Actually -a shared should mean 613 ``use only shared libraries'' but, then, we don't 614 currently support shared libraries on HP/UX anyhow. */ 615 if (strcmp (optarg, "archive") == 0) 616 config.dynamic_link = FALSE; 617 else if (strcmp (optarg, "shared") == 0 618 || strcmp (optarg, "default") == 0) 619 config.dynamic_link = TRUE; 620 else 621 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 622 break; 623 case OPTION_ASSERT: 624 /* FIXME: We just ignore these, but we should handle them. */ 625 if (strcmp (optarg, "definitions") == 0) 626 ; 627 else if (strcmp (optarg, "nodefinitions") == 0) 628 ; 629 else if (strcmp (optarg, "nosymbolic") == 0) 630 ; 631 else if (strcmp (optarg, "pure-text") == 0) 632 ; 633 else 634 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 635 break; 636 case 'A': 637 ldfile_add_arch (optarg); 638 break; 639 case 'b': 640 lang_add_target (optarg); 641 break; 642 case 'c': 643 ldfile_open_command_file (optarg); 644 parser_input = input_mri_script; 645 yyparse (); 646 break; 647 case OPTION_CALL_SHARED: 648 config.dynamic_link = TRUE; 649 break; 650 case OPTION_NON_SHARED: 651 config.dynamic_link = FALSE; 652 break; 653 case OPTION_CREF: 654 command_line.cref = TRUE; 655 link_info.notice_all = TRUE; 656 break; 657 case 'd': 658 command_line.force_common_definition = TRUE; 659 break; 660 case OPTION_DEFSYM: 661 lex_string = optarg; 662 lex_redirect (optarg); 663 parser_input = input_defsym; 664 parsing_defsym = 1; 665 yyparse (); 666 parsing_defsym = 0; 667 lex_string = NULL; 668 break; 669 case OPTION_DEMANGLE: 670 demangling = TRUE; 671 if (optarg != NULL) 672 { 673 enum demangling_styles style; 674 675 style = cplus_demangle_name_to_style (optarg); 676 if (style == unknown_demangling) 677 einfo (_("%F%P: unknown demangling style `%s'"), 678 optarg); 679 680 cplus_demangle_set_style (style); 681 } 682 break; 683 case 'I': /* Used on Solaris. */ 684 case OPTION_DYNAMIC_LINKER: 685 command_line.interpreter = optarg; 686 break; 687 case OPTION_EB: 688 command_line.endian = ENDIAN_BIG; 689 break; 690 case OPTION_EL: 691 command_line.endian = ENDIAN_LITTLE; 692 break; 693 case OPTION_EMBEDDED_RELOCS: 694 command_line.embedded_relocs = TRUE; 695 break; 696 case OPTION_EXPORT_DYNAMIC: 697 case 'E': /* HP/UX compatibility. */ 698 link_info.export_dynamic = TRUE; 699 break; 700 case 'e': 701 lang_add_entry (optarg, TRUE); 702 break; 703 case 'f': 704 if (command_line.auxiliary_filters == NULL) 705 { 706 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 707 command_line.auxiliary_filters[0] = optarg; 708 command_line.auxiliary_filters[1] = NULL; 709 } 710 else 711 { 712 int c; 713 char **p; 714 715 c = 0; 716 for (p = command_line.auxiliary_filters; *p != NULL; p++) 717 ++c; 718 command_line.auxiliary_filters 719 = xrealloc (command_line.auxiliary_filters, 720 (c + 2) * sizeof (char *)); 721 command_line.auxiliary_filters[c] = optarg; 722 command_line.auxiliary_filters[c + 1] = NULL; 723 } 724 break; 725 case 'F': 726 command_line.filter_shlib = optarg; 727 break; 728 case OPTION_FORCE_EXE_SUFFIX: 729 command_line.force_exe_suffix = TRUE; 730 break; 731 case 'G': 732 { 733 char *end; 734 g_switch_value = strtoul (optarg, &end, 0); 735 if (*end) 736 einfo (_("%P%F: invalid number `%s'\n"), optarg); 737 } 738 break; 739 case 'g': 740 /* Ignore. */ 741 break; 742 case OPTION_GC_SECTIONS: 743 command_line.gc_sections = TRUE; 744 break; 745 case OPTION_HELP: 746 help (); 747 xexit (0); 748 break; 749 case 'L': 750 ldfile_add_library_path (optarg, TRUE); 751 break; 752 case 'l': 753 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 754 break; 755 case 'M': 756 config.map_filename = "-"; 757 break; 758 case 'm': 759 /* Ignore. Was handled in a pre-parse. */ 760 break; 761 case OPTION_MAP: 762 config.map_filename = optarg; 763 break; 764 case 'N': 765 config.text_read_only = FALSE; 766 config.magic_demand_paged = FALSE; 767 config.dynamic_link = FALSE; 768 break; 769 case OPTION_NO_OMAGIC: 770 config.text_read_only = TRUE; 771 config.magic_demand_paged = TRUE; 772 /* NB/ Does not set dynamic_link to TRUE. 773 Use --call-shared or -Bdynamic for this. */ 774 break; 775 case 'n': 776 config.magic_demand_paged = FALSE; 777 config.dynamic_link = FALSE; 778 break; 779 case OPTION_NO_DEFINE_COMMON: 780 command_line.inhibit_common_definition = TRUE; 781 break; 782 case OPTION_NO_DEMANGLE: 783 demangling = FALSE; 784 break; 785 case OPTION_NO_GC_SECTIONS: 786 command_line.gc_sections = FALSE; 787 break; 788 case OPTION_NO_KEEP_MEMORY: 789 link_info.keep_memory = FALSE; 790 break; 791 case OPTION_NO_UNDEFINED: 792 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 793 break; 794 case OPTION_ALLOW_SHLIB_UNDEFINED: 795 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 796 break; 797 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 798 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 799 break; 800 case OPTION_UNRESOLVED_SYMBOLS: 801 if (strcmp (optarg, "ignore-all") == 0) 802 { 803 link_info.unresolved_syms_in_objects = RM_IGNORE; 804 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 805 } 806 else if (strcmp (optarg, "report-all") == 0) 807 { 808 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 809 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 810 } 811 else if (strcmp (optarg, "ignore-in-object-files") == 0) 812 { 813 link_info.unresolved_syms_in_objects = RM_IGNORE; 814 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 815 } 816 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 817 { 818 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 819 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 820 } 821 else 822 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 823 break; 824 case OPTION_WARN_UNRESOLVED_SYMBOLS: 825 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 826 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 827 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 828 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 829 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 830 break; 831 832 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 833 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 834 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 835 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 836 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 837 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 838 break; 839 case OPTION_ALLOW_MULTIPLE_DEFINITION: 840 link_info.allow_multiple_definition = TRUE; 841 break; 842 case OPTION_NO_UNDEFINED_VERSION: 843 link_info.allow_undefined_version = FALSE; 844 break; 845 case OPTION_NO_WARN_MISMATCH: 846 command_line.warn_mismatch = FALSE; 847 break; 848 case OPTION_NOINHIBIT_EXEC: 849 force_make_executable = TRUE; 850 break; 851 case OPTION_NOSTDLIB: 852 config.only_cmd_line_lib_dirs = TRUE; 853 break; 854 case OPTION_NO_WHOLE_ARCHIVE: 855 whole_archive = FALSE; 856 break; 857 case 'O': 858 /* FIXME "-O<non-digits> <value>" used to set the address of 859 section <non-digits>. Was this for compatibility with 860 something, or can we create a new option to do that 861 (with a syntax similar to -defsym)? 862 getopt can't handle two args to an option without kludges. */ 863 864 /* Enable optimizations of output files. */ 865 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 866 break; 867 case 'o': 868 lang_add_output (optarg, 0); 869 break; 870 case OPTION_OFORMAT: 871 lang_add_output_format (optarg, NULL, NULL, 0); 872 break; 873 case 'q': 874 link_info.emitrelocations = TRUE; 875 break; 876 case 'i': 877 case 'r': 878 if (optind == last_optind) 879 /* This can happen if the user put "-rpath,a" on the command 880 line. (Or something similar. The comma is important). 881 Getopt becomes confused and thinks that this is a -r option 882 but it cannot parse the text after the -r so it refuses to 883 increment the optind counter. Detect this case and issue 884 an error message here. We cannot just make this a warning, 885 increment optind, and continue because getopt is too confused 886 and will seg-fault the next time around. */ 887 einfo(_("%P%F: bad -rpath option\n")); 888 889 link_info.relocatable = TRUE; 890 config.build_constructors = FALSE; 891 config.magic_demand_paged = FALSE; 892 config.text_read_only = FALSE; 893 config.dynamic_link = FALSE; 894 break; 895 case 'R': 896 /* The GNU linker traditionally uses -R to mean to include 897 only the symbols from a file. The Solaris linker uses -R 898 to set the path used by the runtime linker to find 899 libraries. This is the GNU linker -rpath argument. We 900 try to support both simultaneously by checking the file 901 named. If it is a directory, rather than a regular file, 902 we assume -rpath was meant. */ 903 { 904 struct stat s; 905 906 if (stat (optarg, &s) >= 0 907 && ! S_ISDIR (s.st_mode)) 908 { 909 lang_add_input_file (optarg, 910 lang_input_file_is_symbols_only_enum, 911 NULL); 912 break; 913 } 914 } 915 /* Fall through. */ 916 case OPTION_RPATH: 917 if (command_line.rpath == NULL) 918 command_line.rpath = xstrdup (optarg); 919 else 920 { 921 size_t rpath_len = strlen (command_line.rpath); 922 size_t optarg_len = strlen (optarg); 923 char *buf; 924 char *cp = command_line.rpath; 925 926 /* First see whether OPTARG is already in the path. */ 927 do 928 { 929 size_t idx = 0; 930 931 while (optarg[idx] != '\0' && optarg[idx] == cp[idx]) 932 ++idx; 933 if (optarg[idx] == '\0' 934 && (cp[idx] == '\0' || cp[idx] == ':')) 935 /* We found it. */ 936 break; 937 938 /* Not yet found. */ 939 cp = strchr (cp, ':'); 940 if (cp != NULL) 941 ++cp; 942 } 943 while (cp != NULL); 944 945 if (cp == NULL) 946 { 947 buf = xmalloc (rpath_len + optarg_len + 2); 948 sprintf (buf, "%s:%s", command_line.rpath, optarg); 949 free (command_line.rpath); 950 command_line.rpath = buf; 951 } 952 } 953 break; 954 case OPTION_RPATH_LINK: 955 if (command_line.rpath_link == NULL) 956 command_line.rpath_link = xstrdup (optarg); 957 else 958 { 959 char *buf; 960 961 buf = xmalloc (strlen (command_line.rpath_link) 962 + strlen (optarg) 963 + 2); 964 sprintf (buf, "%s:%s", command_line.rpath_link, optarg); 965 free (command_line.rpath_link); 966 command_line.rpath_link = buf; 967 } 968 break; 969 case OPTION_RELAX: 970 command_line.relax = TRUE; 971 break; 972 case OPTION_RETAIN_SYMBOLS_FILE: 973 add_keepsyms_file (optarg); 974 break; 975 case 'S': 976 link_info.strip = strip_debugger; 977 break; 978 case 's': 979 link_info.strip = strip_all; 980 break; 981 case OPTION_STRIP_DISCARDED: 982 link_info.strip_discarded = TRUE; 983 break; 984 case OPTION_NO_STRIP_DISCARDED: 985 link_info.strip_discarded = FALSE; 986 break; 987 case OPTION_SHARED: 988 if (config.has_shared) 989 { 990 link_info.shared = TRUE; 991 link_info.pie = FALSE; 992 /* When creating a shared library, the default 993 behaviour is to ignore any unresolved references. */ 994 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 995 link_info.unresolved_syms_in_objects = RM_IGNORE; 996 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 997 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 998 } 999 else 1000 einfo (_("%P%F: -shared not supported\n")); 1001 break; 1002 case OPTION_PIE: 1003 if (config.has_shared) 1004 { 1005 link_info.shared = TRUE; 1006 link_info.pie = TRUE; 1007 } 1008 else 1009 einfo (_("%P%F: -pie not supported\n")); 1010 break; 1011 case OPTION_NOPIE: 1012 if (config.has_shared) 1013 { 1014 link_info.shared = FALSE; 1015 link_info.pie = FALSE; 1016 } 1017 else 1018 einfo (_("%P%F: -nopie not supported\n")); 1019 break; 1020 case 'h': /* Used on Solaris. */ 1021 case OPTION_SONAME: 1022 command_line.soname = optarg; 1023 break; 1024 case OPTION_SORT_COMMON: 1025 config.sort_common = TRUE; 1026 break; 1027 case OPTION_STATS: 1028 config.stats = TRUE; 1029 break; 1030 case OPTION_SYMBOLIC: 1031 link_info.symbolic = TRUE; 1032 break; 1033 case 't': 1034 trace_files = TRUE; 1035 break; 1036 case 'T': 1037 ldfile_open_command_file (optarg); 1038 parser_input = input_script; 1039 yyparse (); 1040 break; 1041 case OPTION_SECTION_START: 1042 { 1043 char *optarg2; 1044 char *sec_name; 1045 int len; 1046 1047 /* Check for <something>=<somthing>... */ 1048 optarg2 = strchr (optarg, '='); 1049 if (optarg2 == NULL) 1050 einfo (_("%P%F: invalid argument to option \"--section-start\"\n")); 1051 1052 optarg2++; 1053 1054 /* So far so good. Are all the args present? */ 1055 if ((*optarg == '\0') || (*optarg2 == '\0')) 1056 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n")); 1057 1058 /* We must copy the section name as set_section_start 1059 doesn't do it for us. */ 1060 len = optarg2 - optarg; 1061 sec_name = xmalloc (len); 1062 memcpy (sec_name, optarg, len - 1); 1063 sec_name[len - 1] = 0; 1064 1065 /* Then set it... */ 1066 set_section_start (sec_name, optarg2); 1067 } 1068 break; 1069 case OPTION_TARGET_HELP: 1070 /* Mention any target specific options. */ 1071 ldemul_list_emulation_options (stdout); 1072 exit (0); 1073 case OPTION_TBSS: 1074 set_section_start (".bss", optarg); 1075 break; 1076 case OPTION_TDATA: 1077 set_section_start (".data", optarg); 1078 break; 1079 case OPTION_TTEXT: 1080 set_section_start (".text", optarg); 1081 break; 1082 case OPTION_TRADITIONAL_FORMAT: 1083 link_info.traditional_format = TRUE; 1084 break; 1085 case OPTION_TASK_LINK: 1086 link_info.task_link = TRUE; 1087 /* Fall through - do an implied -r option. */ 1088 case OPTION_UR: 1089 link_info.relocatable = TRUE; 1090 config.build_constructors = TRUE; 1091 config.magic_demand_paged = FALSE; 1092 config.text_read_only = FALSE; 1093 config.dynamic_link = FALSE; 1094 break; 1095 case 'u': 1096 ldlang_add_undef (optarg); 1097 break; 1098 case OPTION_UNIQUE: 1099 if (optarg != NULL) 1100 lang_add_unique (optarg); 1101 else 1102 config.unique_orphan_sections = TRUE; 1103 break; 1104 case OPTION_VERBOSE: 1105 ldversion (1); 1106 version_printed = TRUE; 1107 trace_file_tries = TRUE; 1108 overflow_cutoff_limit = -2; 1109 break; 1110 case 'v': 1111 ldversion (0); 1112 version_printed = TRUE; 1113 break; 1114 case 'V': 1115 ldversion (1); 1116 version_printed = TRUE; 1117 break; 1118 case OPTION_VERSION: 1119 ldversion (2); 1120 xexit (0); 1121 break; 1122 case OPTION_VERSION_SCRIPT: 1123 /* This option indicates a small script that only specifies 1124 version information. Read it, but don't assume that 1125 we've seen a linker script. */ 1126 { 1127 FILE *hold_script_handle; 1128 1129 hold_script_handle = saved_script_handle; 1130 ldfile_open_command_file (optarg); 1131 saved_script_handle = hold_script_handle; 1132 parser_input = input_version_script; 1133 yyparse (); 1134 } 1135 break; 1136 case OPTION_VERSION_EXPORTS_SECTION: 1137 /* This option records a version symbol to be applied to the 1138 symbols listed for export to be found in the object files 1139 .exports sections. */ 1140 command_line.version_exports_section = optarg; 1141 break; 1142 case OPTION_WARN_COMMON: 1143 config.warn_common = TRUE; 1144 break; 1145 case OPTION_WARN_CONSTRUCTORS: 1146 config.warn_constructors = TRUE; 1147 break; 1148 case OPTION_WARN_FATAL: 1149 config.fatal_warnings = TRUE; 1150 break; 1151 case OPTION_WARN_MULTIPLE_GP: 1152 config.warn_multiple_gp = TRUE; 1153 break; 1154 case OPTION_WARN_ONCE: 1155 config.warn_once = TRUE; 1156 break; 1157 case OPTION_WARN_SECTION_ALIGN: 1158 config.warn_section_align = TRUE; 1159 break; 1160 case OPTION_WHOLE_ARCHIVE: 1161 whole_archive = TRUE; 1162 break; 1163 case OPTION_AS_NEEDED: 1164 as_needed = TRUE; 1165 break; 1166 case OPTION_NO_AS_NEEDED: 1167 as_needed = FALSE; 1168 break; 1169 case OPTION_WRAP: 1170 add_wrap (optarg); 1171 break; 1172 case OPTION_DISCARD_NONE: 1173 link_info.discard = discard_none; 1174 break; 1175 case 'X': 1176 link_info.discard = discard_l; 1177 break; 1178 case 'x': 1179 link_info.discard = discard_all; 1180 break; 1181 case 'Y': 1182 if (strncmp (optarg, "P,", 2) == 0) 1183 optarg += 2; 1184 if (default_dirlist != NULL) 1185 free (default_dirlist); 1186 default_dirlist = xstrdup (optarg); 1187 break; 1188 case 'y': 1189 add_ysym (optarg); 1190 break; 1191 case 'Z': 1192 config.data_bss_contig = TRUE; 1193 break; 1194 case OPTION_SPARE_DYNAMIC_TAGS: 1195 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1196 break; 1197 case OPTION_SPLIT_BY_RELOC: 1198 if (optarg != NULL) 1199 config.split_by_reloc = strtoul (optarg, NULL, 0); 1200 else 1201 config.split_by_reloc = 32768; 1202 break; 1203 case OPTION_SPLIT_BY_FILE: 1204 if (optarg != NULL) 1205 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1206 else 1207 config.split_by_file = 1; 1208 break; 1209 case OPTION_CHECK_SECTIONS: 1210 command_line.check_section_addresses = TRUE; 1211 break; 1212 case OPTION_NO_CHECK_SECTIONS: 1213 command_line.check_section_addresses = FALSE; 1214 break; 1215 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1216 command_line.accept_unknown_input_arch = TRUE; 1217 break; 1218 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1219 command_line.accept_unknown_input_arch = FALSE; 1220 break; 1221 case '(': 1222 if (ingroup) 1223 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1224 1225 lang_enter_group (); 1226 ingroup = 1; 1227 break; 1228 case ')': 1229 if (! ingroup) 1230 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1231 1232 lang_leave_group (); 1233 ingroup = 0; 1234 break; 1235 1236 case OPTION_INIT: 1237 link_info.init_function = optarg; 1238 break; 1239 1240 case OPTION_FINI: 1241 link_info.fini_function = optarg; 1242 break; 1243 } 1244 } 1245 1246 if (ingroup) 1247 lang_leave_group (); 1248 1249 if (default_dirlist != NULL) 1250 { 1251 set_default_dirlist (default_dirlist); 1252 free (default_dirlist); 1253 } 1254 1255 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1256 /* FIXME: Should we allow emulations a chance to set this ? */ 1257 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1258 1259 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1260 /* FIXME: Should we allow emulations a chance to set this ? */ 1261 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1262} 1263 1264/* Add the (colon-separated) elements of DIRLIST_PTR to the 1265 library search path. */ 1266 1267static void 1268set_default_dirlist (char *dirlist_ptr) 1269{ 1270 char *p; 1271 1272 while (1) 1273 { 1274 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1275 if (p != NULL) 1276 *p = '\0'; 1277 if (*dirlist_ptr != '\0') 1278 ldfile_add_library_path (dirlist_ptr, TRUE); 1279 if (p == NULL) 1280 break; 1281 dirlist_ptr = p + 1; 1282 } 1283} 1284 1285static void 1286set_section_start (char *sect, char *valstr) 1287{ 1288 const char *end; 1289 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1290 if (*end) 1291 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1292 lang_section_start (sect, exp_intop (val)); 1293} 1294 1295/* Print help messages for the options. */ 1296 1297static void 1298help (void) 1299{ 1300 unsigned i; 1301 const char **targets, **pp; 1302 1303 printf (_("Usage: %s [options] file...\n"), program_name); 1304 1305 printf (_("Options:\n")); 1306 for (i = 0; i < OPTION_COUNT; i++) 1307 { 1308 if (ld_options[i].doc != NULL) 1309 { 1310 bfd_boolean comma; 1311 int len; 1312 unsigned j; 1313 1314 printf (" "); 1315 1316 comma = FALSE; 1317 len = 2; 1318 1319 j = i; 1320 do 1321 { 1322 if (ld_options[j].shortopt != '\0' 1323 && ld_options[j].control != NO_HELP) 1324 { 1325 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1326 len += (comma ? 2 : 0) + 2; 1327 if (ld_options[j].arg != NULL) 1328 { 1329 if (ld_options[j].opt.has_arg != optional_argument) 1330 { 1331 printf (" "); 1332 ++len; 1333 } 1334 printf ("%s", _(ld_options[j].arg)); 1335 len += strlen (_(ld_options[j].arg)); 1336 } 1337 comma = TRUE; 1338 } 1339 ++j; 1340 } 1341 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1342 1343 j = i; 1344 do 1345 { 1346 if (ld_options[j].opt.name != NULL 1347 && ld_options[j].control != NO_HELP) 1348 { 1349 int two_dashes = 1350 (ld_options[j].control == TWO_DASHES 1351 || ld_options[j].control == EXACTLY_TWO_DASHES); 1352 1353 printf ("%s-%s%s", 1354 comma ? ", " : "", 1355 two_dashes ? "-" : "", 1356 ld_options[j].opt.name); 1357 len += ((comma ? 2 : 0) 1358 + 1 1359 + (two_dashes ? 1 : 0) 1360 + strlen (ld_options[j].opt.name)); 1361 if (ld_options[j].arg != NULL) 1362 { 1363 printf (" %s", _(ld_options[j].arg)); 1364 len += 1 + strlen (_(ld_options[j].arg)); 1365 } 1366 comma = TRUE; 1367 } 1368 ++j; 1369 } 1370 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1371 1372 if (len >= 30) 1373 { 1374 printf ("\n"); 1375 len = 0; 1376 } 1377 1378 for (; len < 30; len++) 1379 putchar (' '); 1380 1381 printf ("%s\n", _(ld_options[i].doc)); 1382 } 1383 } 1384 1385 /* Note: Various tools (such as libtool) depend upon the 1386 format of the listings below - do not change them. */ 1387 /* xgettext:c-format */ 1388 printf (_("%s: supported targets:"), program_name); 1389 targets = bfd_target_list (); 1390 for (pp = targets; *pp != NULL; pp++) 1391 printf (" %s", *pp); 1392 free (targets); 1393 printf ("\n"); 1394 1395 /* xgettext:c-format */ 1396 printf (_("%s: supported emulations: "), program_name); 1397 ldemul_list_emulations (stdout); 1398 printf ("\n"); 1399 1400 /* xgettext:c-format */ 1401 printf (_("%s: emulation specific options:\n"), program_name); 1402 ldemul_list_emulation_options (stdout); 1403 printf ("\n"); 1404 1405 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1406} 1407