lexsup.c revision 209867
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_UNRESOLVED_SYMBOLS, 144 OPTION_WARN_UNRESOLVED_SYMBOLS, 145 OPTION_ERROR_UNRESOLVED_SYMBOLS 146}; 147 148/* The long options. This structure is used for both the option 149 parsing and the help text. */ 150 151struct ld_option 152{ 153 /* The long option information. */ 154 struct option opt; 155 /* The short option with the same meaning ('\0' if none). */ 156 char shortopt; 157 /* The name of the argument (NULL if none). */ 158 const char *arg; 159 /* The documentation string. If this is NULL, this is a synonym for 160 the previous option. */ 161 const char *doc; 162 enum { 163 /* Use one dash before long option name. */ 164 ONE_DASH, 165 /* Use two dashes before long option name. */ 166 TWO_DASHES, 167 /* Only accept two dashes before the long option name. 168 This is an overloading of the use of this enum, since originally it 169 was only intended to tell the --help display function how to display 170 the long option name. This feature was added in order to resolve 171 the confusion about the -omagic command line switch. Is it setting 172 the output file name to "magic" or is it setting the NMAGIC flag on 173 the output ? It has been decided that it is setting the output file 174 name, and that if you want to set the NMAGIC flag you should use -N 175 or --omagic. */ 176 EXACTLY_TWO_DASHES, 177 /* Don't mention this option in --help output. */ 178 NO_HELP 179 } control; 180}; 181 182static const struct ld_option ld_options[] = 183{ 184 { {NULL, required_argument, NULL, '\0'}, 185 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 186 ONE_DASH }, 187 { {"architecture", required_argument, NULL, 'A'}, 188 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 189 { {"format", required_argument, NULL, 'b'}, 190 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES }, 191 { {"mri-script", required_argument, NULL, 'c'}, 192 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 193 { {"dc", no_argument, NULL, 'd'}, 194 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 195 { {"dp", no_argument, NULL, 'd'}, 196 '\0', NULL, NULL, ONE_DASH }, 197 { {"entry", required_argument, NULL, 'e'}, 198 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 199 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 200 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 201 { {"EB", no_argument, NULL, OPTION_EB}, 202 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 203 { {"EL", no_argument, NULL, OPTION_EL}, 204 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 205 { {"auxiliary", required_argument, NULL, 'f'}, 206 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 207 TWO_DASHES }, 208 { {"filter", required_argument, NULL, 'F'}, 209 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES }, 210 { {NULL, no_argument, NULL, '\0'}, 211 'g', NULL, N_("Ignored"), ONE_DASH }, 212 { {"gpsize", required_argument, NULL, 'G'}, 213 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 214 TWO_DASHES }, 215 { {"soname", required_argument, NULL, OPTION_SONAME}, 216 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 217 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 218 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES }, 219 { {"library", required_argument, NULL, 'l'}, 220 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 221 { {"library-path", required_argument, NULL, 'L'}, 222 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES }, 223 { {NULL, required_argument, NULL, '\0'}, 224 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 225 { {"print-map", no_argument, NULL, 'M'}, 226 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 227 { {"nmagic", no_argument, NULL, 'n'}, 228 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 229 { {"omagic", no_argument, NULL, 'N'}, 230 'N', NULL, N_("Do not page align data, do not make text readonly"), 231 EXACTLY_TWO_DASHES }, 232 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 233 '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES }, 234 { {"output", required_argument, NULL, 'o'}, 235 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 236 { {NULL, required_argument, NULL, '\0'}, 237 'O', NULL, N_("Optimize output file"), ONE_DASH }, 238 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 239 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 240 { {"emit-relocs", no_argument, NULL, 'q'}, 241 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 242 { {"relocatable", no_argument, NULL, 'r'}, 243 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 244 { {NULL, no_argument, NULL, '\0'}, 245 'i', NULL, NULL, ONE_DASH }, 246 { {"just-symbols", required_argument, NULL, 'R'}, 247 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 248 TWO_DASHES }, 249 { {"strip-all", no_argument, NULL, 's'}, 250 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 251 { {"strip-debug", no_argument, NULL, 'S'}, 252 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 253 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 254 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 255 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 256 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 257 { {"trace", no_argument, NULL, 't'}, 258 't', NULL, N_("Trace file opens"), TWO_DASHES }, 259 { {"script", required_argument, NULL, 'T'}, 260 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 261 { {"undefined", required_argument, NULL, 'u'}, 262 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES }, 263 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 264 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 265 { {"Ur", no_argument, NULL, OPTION_UR}, 266 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 267 { {"version", no_argument, NULL, OPTION_VERSION}, 268 'v', NULL, N_("Print version information"), TWO_DASHES }, 269 { {NULL, no_argument, NULL, '\0'}, 270 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 271 { {"discard-all", no_argument, NULL, 'x'}, 272 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 273 { {"discard-locals", no_argument, NULL, 'X'}, 274 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 275 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 276 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 277 { {"trace-symbol", required_argument, NULL, 'y'}, 278 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 279 { {NULL, required_argument, NULL, '\0'}, 280 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH }, 281 { {"start-group", no_argument, NULL, '('}, 282 '(', NULL, N_("Start a group"), TWO_DASHES }, 283 { {"end-group", no_argument, NULL, ')'}, 284 ')', NULL, N_("End a group"), TWO_DASHES }, 285 { {"accept-unknown-input-arch", no_argument, NULL, OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 286 '\0', NULL, N_("Accept input files whose architecture cannot be determined"), TWO_DASHES }, 287 { {"no-accept-unknown-input-arch", no_argument, NULL, OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 288 '\0', NULL, N_("Reject input files whose architecture is unknown"), TWO_DASHES }, 289 { {"assert", required_argument, NULL, OPTION_ASSERT}, 290 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 291 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 292 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 293 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 294 '\0', NULL, NULL, ONE_DASH }, 295 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 296 '\0', NULL, NULL, ONE_DASH }, 297 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 298 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 299 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 300 '\0', NULL, NULL, ONE_DASH }, 301 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 302 '\0', NULL, NULL, ONE_DASH }, 303 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 304 '\0', NULL, NULL, ONE_DASH }, 305 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 306 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 307 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 308 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES }, 309 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 310 '\0', NULL, N_("Do not check section addresses for overlaps"), 311 TWO_DASHES }, 312 { {"cref", no_argument, NULL, OPTION_CREF}, 313 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 314 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 315 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 316 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 317 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES }, 318 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 319 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 320 { {"fini", required_argument, NULL, OPTION_FINI}, 321 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 322 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 323 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 324 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 325 '\0', NULL, N_("Remove unused sections (on some targets)"), 326 TWO_DASHES }, 327 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 328 '\0', NULL, N_("Don't remove unused sections (default)"), 329 TWO_DASHES }, 330 { {"help", no_argument, NULL, OPTION_HELP}, 331 '\0', NULL, N_("Print option help"), TWO_DASHES }, 332 { {"init", required_argument, NULL, OPTION_INIT}, 333 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 334 { {"Map", required_argument, NULL, OPTION_MAP}, 335 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 336 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 337 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 338 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 339 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 340 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 341 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 342 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 343 '\0', NULL, N_("Do not allow unresolved references in object files"), TWO_DASHES }, 344 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 345 '\0', NULL, N_("Allow unresolved references in shared libaries"), TWO_DASHES }, 346 { {"no-allow-shlib-undefined", no_argument, NULL, OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 347 '\0', NULL, N_("Do not allow unresolved references in shared libs"), TWO_DASHES }, 348 { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION}, 349 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 350 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 351 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 352 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 353 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 354 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 355 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 356 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 357 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES }, 358 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 359 '\0', NULL, NULL, NO_HELP }, 360 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 361 '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH }, 362 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 363 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES }, 364 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 365 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 366 { {"relax", no_argument, NULL, OPTION_RELAX}, 367 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES }, 368 { {"retain-symbols-file", required_argument, NULL, 369 OPTION_RETAIN_SYMBOLS_FILE}, 370 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 371 { {"rpath", required_argument, NULL, OPTION_RPATH}, 372 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 373 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 374 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH }, 375 { {"shared", no_argument, NULL, OPTION_SHARED}, 376 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 377 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 378 '\0', NULL, NULL, ONE_DASH }, 379 { {"pie", no_argument, NULL, OPTION_PIE}, 380 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 381 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 382 '\0', NULL, NULL, TWO_DASHES }, 383 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, 384 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, 385 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 386 '\0', NULL, NULL, NO_HELP }, 387 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 388 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES }, 389 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 390 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES }, 391 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 392 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES }, 393 { {"stats", no_argument, NULL, OPTION_STATS}, 394 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 395 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 396 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 397 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 398 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 399 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 400 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 401 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 402 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES }, 403 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 404 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 405 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 406 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 407 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 408 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 409 { {"unresolved-symbols=<method>", required_argument, NULL, OPTION_UNRESOLVED_SYMBOLS}, 410 '\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"), 411 TWO_DASHES }, 412 { {"verbose", no_argument, NULL, OPTION_VERBOSE}, 413 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, 414 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 415 '\0', NULL, NULL, NO_HELP }, 416 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 417 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 418 { {"version-exports-section", required_argument, NULL, 419 OPTION_VERSION_EXPORTS_SECTION }, 420 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."), 421 TWO_DASHES }, 422 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 423 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 424 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 425 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 426 TWO_DASHES }, 427 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 428 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 429 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 430 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 431 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 432 '\0', NULL, N_("Warn if start of section changes due to alignment"), 433 TWO_DASHES }, 434 { {"warn-unresolved-symbols", no_argument, NULL, OPTION_WARN_UNRESOLVED_SYMBOLS}, 435 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 436 { {"error-unresolved-symbols", no_argument, NULL, OPTION_ERROR_UNRESOLVED_SYMBOLS}, 437 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 438 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 439 '\0', NULL, N_("Treat warnings as errors"), 440 TWO_DASHES }, 441 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 442 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES }, 443 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED}, 444 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), TWO_DASHES }, 445 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED}, 446 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), TWO_DASHES }, 447 { {"wrap", required_argument, NULL, OPTION_WRAP}, 448 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES } 449}; 450 451#define OPTION_COUNT ARRAY_SIZE (ld_options) 452 453void 454parse_args (unsigned argc, char **argv) 455{ 456 unsigned i; 457 int is, il, irl; 458 int ingroup = 0; 459 char *default_dirlist = NULL; 460 char *shortopts; 461 struct option *longopts; 462 struct option *really_longopts; 463 int last_optind; 464 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 465 466 shortopts = xmalloc (OPTION_COUNT * 3 + 2); 467 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 468 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 469 470 /* Starting the short option string with '-' is for programs that 471 expect options and other ARGV-elements in any order and that care about 472 the ordering of the two. We describe each non-option ARGV-element 473 as if it were the argument of an option with character code 1. */ 474 shortopts[0] = '-'; 475 is = 1; 476 il = 0; 477 irl = 0; 478 for (i = 0; i < OPTION_COUNT; i++) 479 { 480 if (ld_options[i].shortopt != '\0') 481 { 482 shortopts[is] = ld_options[i].shortopt; 483 ++is; 484 if (ld_options[i].opt.has_arg == required_argument 485 || ld_options[i].opt.has_arg == optional_argument) 486 { 487 shortopts[is] = ':'; 488 ++is; 489 if (ld_options[i].opt.has_arg == optional_argument) 490 { 491 shortopts[is] = ':'; 492 ++is; 493 } 494 } 495 } 496 if (ld_options[i].opt.name != NULL) 497 { 498 if (ld_options[i].control == EXACTLY_TWO_DASHES) 499 { 500 really_longopts[irl] = ld_options[i].opt; 501 ++irl; 502 } 503 else 504 { 505 longopts[il] = ld_options[i].opt; 506 ++il; 507 } 508 } 509 } 510 shortopts[is] = '\0'; 511 longopts[il].name = NULL; 512 really_longopts[irl].name = NULL; 513 514 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 515 516 /* The -G option is ambiguous on different platforms. Sometimes it 517 specifies the largest data size to put into the small data 518 section. Sometimes it is equivalent to --shared. Unfortunately, 519 the first form takes an argument, while the second does not. 520 521 We need to permit the --shared form because on some platforms, 522 such as Solaris, gcc -shared will pass -G to the linker. 523 524 To permit either usage, we look through the argument list. If we 525 find -G not followed by a number, we change it into --shared. 526 This will work for most normal cases. */ 527 for (i = 1; i < argc; i++) 528 if (strcmp (argv[i], "-G") == 0 529 && (i + 1 >= argc 530 || ! ISDIGIT (argv[i + 1][0]))) 531 argv[i] = (char *) "--shared"; 532 533 /* Because we permit long options to start with a single dash, and 534 we have a --library option, and the -l option is conventionally 535 used with an immediately following argument, we can have bad 536 results if somebody tries to use -l with a library whose name 537 happens to start with "ibrary", as in -li. We avoid problems by 538 simply turning -l into --library. This means that users will 539 have to use two dashes in order to use --library, which is OK 540 since that's how it is documented. 541 542 FIXME: It's possible that this problem can arise for other short 543 options as well, although the user does always have the recourse 544 of adding a space between the option and the argument. */ 545 for (i = 1; i < argc; i++) 546 { 547 if (argv[i][0] == '-' 548 && argv[i][1] == 'l' 549 && argv[i][2] != '\0') 550 { 551 char *n; 552 553 n = xmalloc (strlen (argv[i]) + 20); 554 sprintf (n, "--library=%s", argv[i] + 2); 555 argv[i] = n; 556 } 557 } 558 559 last_optind = -1; 560 while (1) 561 { 562 int longind; 563 int optc; 564 565 /* Using last_optind lets us avoid calling ldemul_parse_args 566 multiple times on a single option, which would lead to 567 confusion in the internal static variables maintained by 568 getopt. This could otherwise happen for an argument like 569 -nx, in which the -n is parsed as a single option, and we 570 loop around to pick up the -x. */ 571 if (optind != last_optind) 572 if (ldemul_parse_args (argc, argv)) 573 continue; 574 575 /* getopt_long_only is like getopt_long, but '-' as well as '--' 576 can indicate a long option. */ 577 opterr = 0; 578 last_optind = optind; 579 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 580 if (optc == '?') 581 { 582 optind = last_optind; 583 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 584 } 585 586 if (ldemul_handle_option (optc)) 587 continue; 588 589 if (optc == -1) 590 break; 591 592 switch (optc) 593 { 594 case '?': 595 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 596 default: 597 einfo (_("%P%F: use the --help option for usage information\n")); 598 599 case 1: /* File name. */ 600 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 601 break; 602 603 case OPTION_IGNORE: 604 break; 605 case 'a': 606 /* For HP/UX compatibility. Actually -a shared should mean 607 ``use only shared libraries'' but, then, we don't 608 currently support shared libraries on HP/UX anyhow. */ 609 if (strcmp (optarg, "archive") == 0) 610 config.dynamic_link = FALSE; 611 else if (strcmp (optarg, "shared") == 0 612 || strcmp (optarg, "default") == 0) 613 config.dynamic_link = TRUE; 614 else 615 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 616 break; 617 case OPTION_ASSERT: 618 /* FIXME: We just ignore these, but we should handle them. */ 619 if (strcmp (optarg, "definitions") == 0) 620 ; 621 else if (strcmp (optarg, "nodefinitions") == 0) 622 ; 623 else if (strcmp (optarg, "nosymbolic") == 0) 624 ; 625 else if (strcmp (optarg, "pure-text") == 0) 626 ; 627 else 628 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 629 break; 630 case 'A': 631 ldfile_add_arch (optarg); 632 break; 633 case 'b': 634 lang_add_target (optarg); 635 break; 636 case 'c': 637 ldfile_open_command_file (optarg); 638 parser_input = input_mri_script; 639 yyparse (); 640 break; 641 case OPTION_CALL_SHARED: 642 config.dynamic_link = TRUE; 643 break; 644 case OPTION_NON_SHARED: 645 config.dynamic_link = FALSE; 646 break; 647 case OPTION_CREF: 648 command_line.cref = TRUE; 649 link_info.notice_all = TRUE; 650 break; 651 case 'd': 652 command_line.force_common_definition = TRUE; 653 break; 654 case OPTION_DEFSYM: 655 lex_string = optarg; 656 lex_redirect (optarg); 657 parser_input = input_defsym; 658 parsing_defsym = 1; 659 yyparse (); 660 parsing_defsym = 0; 661 lex_string = NULL; 662 break; 663 case OPTION_DEMANGLE: 664 demangling = TRUE; 665 if (optarg != NULL) 666 { 667 enum demangling_styles style; 668 669 style = cplus_demangle_name_to_style (optarg); 670 if (style == unknown_demangling) 671 einfo (_("%F%P: unknown demangling style `%s'"), 672 optarg); 673 674 cplus_demangle_set_style (style); 675 } 676 break; 677 case 'I': /* Used on Solaris. */ 678 case OPTION_DYNAMIC_LINKER: 679 command_line.interpreter = optarg; 680 break; 681 case OPTION_EB: 682 command_line.endian = ENDIAN_BIG; 683 break; 684 case OPTION_EL: 685 command_line.endian = ENDIAN_LITTLE; 686 break; 687 case OPTION_EMBEDDED_RELOCS: 688 command_line.embedded_relocs = TRUE; 689 break; 690 case OPTION_EXPORT_DYNAMIC: 691 case 'E': /* HP/UX compatibility. */ 692 link_info.export_dynamic = TRUE; 693 break; 694 case 'e': 695 lang_add_entry (optarg, TRUE); 696 break; 697 case 'f': 698 if (command_line.auxiliary_filters == NULL) 699 { 700 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *)); 701 command_line.auxiliary_filters[0] = optarg; 702 command_line.auxiliary_filters[1] = NULL; 703 } 704 else 705 { 706 int c; 707 char **p; 708 709 c = 0; 710 for (p = command_line.auxiliary_filters; *p != NULL; p++) 711 ++c; 712 command_line.auxiliary_filters 713 = xrealloc (command_line.auxiliary_filters, 714 (c + 2) * sizeof (char *)); 715 command_line.auxiliary_filters[c] = optarg; 716 command_line.auxiliary_filters[c + 1] = NULL; 717 } 718 break; 719 case 'F': 720 command_line.filter_shlib = optarg; 721 break; 722 case OPTION_FORCE_EXE_SUFFIX: 723 command_line.force_exe_suffix = TRUE; 724 break; 725 case 'G': 726 { 727 char *end; 728 g_switch_value = strtoul (optarg, &end, 0); 729 if (*end) 730 einfo (_("%P%F: invalid number `%s'\n"), optarg); 731 } 732 break; 733 case 'g': 734 /* Ignore. */ 735 break; 736 case OPTION_GC_SECTIONS: 737 command_line.gc_sections = TRUE; 738 break; 739 case OPTION_HELP: 740 help (); 741 xexit (0); 742 break; 743 case 'L': 744 ldfile_add_library_path (optarg, TRUE); 745 break; 746 case 'l': 747 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 748 break; 749 case 'M': 750 config.map_filename = "-"; 751 break; 752 case 'm': 753 /* Ignore. Was handled in a pre-parse. */ 754 break; 755 case OPTION_MAP: 756 config.map_filename = optarg; 757 break; 758 case 'N': 759 config.text_read_only = FALSE; 760 config.magic_demand_paged = FALSE; 761 config.dynamic_link = FALSE; 762 break; 763 case OPTION_NO_OMAGIC: 764 config.text_read_only = TRUE; 765 config.magic_demand_paged = TRUE; 766 /* NB/ Does not set dynamic_link to TRUE. 767 Use --call-shared or -Bdynamic for this. */ 768 break; 769 case 'n': 770 config.magic_demand_paged = FALSE; 771 config.dynamic_link = FALSE; 772 break; 773 case OPTION_NO_DEFINE_COMMON: 774 command_line.inhibit_common_definition = TRUE; 775 break; 776 case OPTION_NO_DEMANGLE: 777 demangling = FALSE; 778 break; 779 case OPTION_NO_GC_SECTIONS: 780 command_line.gc_sections = FALSE; 781 break; 782 case OPTION_NO_KEEP_MEMORY: 783 link_info.keep_memory = FALSE; 784 break; 785 case OPTION_NO_UNDEFINED: 786 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 787 break; 788 case OPTION_ALLOW_SHLIB_UNDEFINED: 789 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 790 break; 791 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 792 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 793 break; 794 case OPTION_UNRESOLVED_SYMBOLS: 795 if (strcmp (optarg, "ignore-all") == 0) 796 { 797 link_info.unresolved_syms_in_objects = RM_IGNORE; 798 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 799 } 800 else if (strcmp (optarg, "report-all") == 0) 801 { 802 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 803 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 804 } 805 else if (strcmp (optarg, "ignore-in-object-files") == 0) 806 { 807 link_info.unresolved_syms_in_objects = RM_IGNORE; 808 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 809 } 810 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 811 { 812 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 813 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 814 } 815 else 816 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 817 break; 818 case OPTION_WARN_UNRESOLVED_SYMBOLS: 819 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 820 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 821 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 822 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 823 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 824 break; 825 826 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 827 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 828 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 829 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 830 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 831 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 832 break; 833 case OPTION_ALLOW_MULTIPLE_DEFINITION: 834 link_info.allow_multiple_definition = TRUE; 835 break; 836 case OPTION_NO_UNDEFINED_VERSION: 837 link_info.allow_undefined_version = FALSE; 838 break; 839 case OPTION_NO_WARN_MISMATCH: 840 command_line.warn_mismatch = FALSE; 841 break; 842 case OPTION_NOINHIBIT_EXEC: 843 force_make_executable = TRUE; 844 break; 845 case OPTION_NOSTDLIB: 846 config.only_cmd_line_lib_dirs = TRUE; 847 break; 848 case OPTION_NO_WHOLE_ARCHIVE: 849 whole_archive = FALSE; 850 break; 851 case 'O': 852 /* FIXME "-O<non-digits> <value>" used to set the address of 853 section <non-digits>. Was this for compatibility with 854 something, or can we create a new option to do that 855 (with a syntax similar to -defsym)? 856 getopt can't handle two args to an option without kludges. */ 857 858 /* Enable optimizations of output files. */ 859 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 860 break; 861 case 'o': 862 lang_add_output (optarg, 0); 863 break; 864 case OPTION_OFORMAT: 865 lang_add_output_format (optarg, NULL, NULL, 0); 866 break; 867 case 'q': 868 link_info.emitrelocations = TRUE; 869 break; 870 case 'i': 871 case 'r': 872 if (optind == last_optind) 873 /* This can happen if the user put "-rpath,a" on the command 874 line. (Or something similar. The comma is important). 875 Getopt becomes confused and thinks that this is a -r option 876 but it cannot parse the text after the -r so it refuses to 877 increment the optind counter. Detect this case and issue 878 an error message here. We cannot just make this a warning, 879 increment optind, and continue because getopt is too confused 880 and will seg-fault the next time around. */ 881 einfo(_("%P%F: bad -rpath option\n")); 882 883 link_info.relocatable = TRUE; 884 config.build_constructors = FALSE; 885 config.magic_demand_paged = FALSE; 886 config.text_read_only = FALSE; 887 config.dynamic_link = FALSE; 888 break; 889 case 'R': 890 /* The GNU linker traditionally uses -R to mean to include 891 only the symbols from a file. The Solaris linker uses -R 892 to set the path used by the runtime linker to find 893 libraries. This is the GNU linker -rpath argument. We 894 try to support both simultaneously by checking the file 895 named. If it is a directory, rather than a regular file, 896 we assume -rpath was meant. */ 897 { 898 struct stat s; 899 900 if (stat (optarg, &s) >= 0 901 && ! S_ISDIR (s.st_mode)) 902 { 903 lang_add_input_file (optarg, 904 lang_input_file_is_symbols_only_enum, 905 NULL); 906 break; 907 } 908 } 909 /* Fall through. */ 910 case OPTION_RPATH: 911 if (command_line.rpath == NULL) 912 command_line.rpath = xstrdup (optarg); 913 else 914 { 915 size_t rpath_len = strlen (command_line.rpath); 916 size_t optarg_len = strlen (optarg); 917 char *buf; 918 char *cp = command_line.rpath; 919 920 /* First see whether OPTARG is already in the path. */ 921 do 922 { 923 size_t idx = 0; 924 925 while (optarg[idx] != '\0' && optarg[idx] == cp[idx]) 926 ++idx; 927 if (optarg[idx] == '\0' 928 && (cp[idx] == '\0' || cp[idx] == ':')) 929 /* We found it. */ 930 break; 931 932 /* Not yet found. */ 933 cp = strchr (cp, ':'); 934 if (cp != NULL) 935 ++cp; 936 } 937 while (cp != NULL); 938 939 if (cp == NULL) 940 { 941 buf = xmalloc (rpath_len + optarg_len + 2); 942 sprintf (buf, "%s:%s", command_line.rpath, optarg); 943 free (command_line.rpath); 944 command_line.rpath = buf; 945 } 946 } 947 break; 948 case OPTION_RPATH_LINK: 949 if (command_line.rpath_link == NULL) 950 command_line.rpath_link = xstrdup (optarg); 951 else 952 { 953 char *buf; 954 955 buf = xmalloc (strlen (command_line.rpath_link) 956 + strlen (optarg) 957 + 2); 958 sprintf (buf, "%s:%s", command_line.rpath_link, optarg); 959 free (command_line.rpath_link); 960 command_line.rpath_link = buf; 961 } 962 break; 963 case OPTION_RELAX: 964 command_line.relax = TRUE; 965 break; 966 case OPTION_RETAIN_SYMBOLS_FILE: 967 add_keepsyms_file (optarg); 968 break; 969 case 'S': 970 link_info.strip = strip_debugger; 971 break; 972 case 's': 973 link_info.strip = strip_all; 974 break; 975 case OPTION_STRIP_DISCARDED: 976 link_info.strip_discarded = TRUE; 977 break; 978 case OPTION_NO_STRIP_DISCARDED: 979 link_info.strip_discarded = FALSE; 980 break; 981 case OPTION_SHARED: 982 if (config.has_shared) 983 { 984 link_info.shared = TRUE; 985 /* When creating a shared library, the default 986 behaviour is to ignore any unresolved references. */ 987 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 988 link_info.unresolved_syms_in_objects = RM_IGNORE; 989 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 990 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 991 } 992 else 993 einfo (_("%P%F: -shared not supported\n")); 994 break; 995 case OPTION_PIE: 996 if (config.has_shared) 997 { 998 link_info.shared = TRUE; 999 link_info.pie = TRUE; 1000 } 1001 else 1002 einfo (_("%P%F: -pie not supported\n")); 1003 break; 1004 case 'h': /* Used on Solaris. */ 1005 case OPTION_SONAME: 1006 command_line.soname = optarg; 1007 break; 1008 case OPTION_SORT_COMMON: 1009 config.sort_common = TRUE; 1010 break; 1011 case OPTION_STATS: 1012 config.stats = TRUE; 1013 break; 1014 case OPTION_SYMBOLIC: 1015 link_info.symbolic = TRUE; 1016 break; 1017 case 't': 1018 trace_files = TRUE; 1019 break; 1020 case 'T': 1021 ldfile_open_command_file (optarg); 1022 parser_input = input_script; 1023 yyparse (); 1024 break; 1025 case OPTION_SECTION_START: 1026 { 1027 char *optarg2; 1028 char *sec_name; 1029 int len; 1030 1031 /* Check for <something>=<somthing>... */ 1032 optarg2 = strchr (optarg, '='); 1033 if (optarg2 == NULL) 1034 einfo (_("%P%F: invalid argument to option \"--section-start\"\n")); 1035 1036 optarg2++; 1037 1038 /* So far so good. Are all the args present? */ 1039 if ((*optarg == '\0') || (*optarg2 == '\0')) 1040 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n")); 1041 1042 /* We must copy the section name as set_section_start 1043 doesn't do it for us. */ 1044 len = optarg2 - optarg; 1045 sec_name = xmalloc (len); 1046 memcpy (sec_name, optarg, len - 1); 1047 sec_name[len - 1] = 0; 1048 1049 /* Then set it... */ 1050 set_section_start (sec_name, optarg2); 1051 } 1052 break; 1053 case OPTION_TARGET_HELP: 1054 /* Mention any target specific options. */ 1055 ldemul_list_emulation_options (stdout); 1056 exit (0); 1057 case OPTION_TBSS: 1058 set_section_start (".bss", optarg); 1059 break; 1060 case OPTION_TDATA: 1061 set_section_start (".data", optarg); 1062 break; 1063 case OPTION_TTEXT: 1064 set_section_start (".text", optarg); 1065 break; 1066 case OPTION_TRADITIONAL_FORMAT: 1067 link_info.traditional_format = TRUE; 1068 break; 1069 case OPTION_TASK_LINK: 1070 link_info.task_link = TRUE; 1071 /* Fall through - do an implied -r option. */ 1072 case OPTION_UR: 1073 link_info.relocatable = TRUE; 1074 config.build_constructors = TRUE; 1075 config.magic_demand_paged = FALSE; 1076 config.text_read_only = FALSE; 1077 config.dynamic_link = FALSE; 1078 break; 1079 case 'u': 1080 ldlang_add_undef (optarg); 1081 break; 1082 case OPTION_UNIQUE: 1083 if (optarg != NULL) 1084 lang_add_unique (optarg); 1085 else 1086 config.unique_orphan_sections = TRUE; 1087 break; 1088 case OPTION_VERBOSE: 1089 ldversion (1); 1090 version_printed = TRUE; 1091 trace_file_tries = TRUE; 1092 overflow_cutoff_limit = -2; 1093 break; 1094 case 'v': 1095 ldversion (0); 1096 version_printed = TRUE; 1097 break; 1098 case 'V': 1099 ldversion (1); 1100 version_printed = TRUE; 1101 break; 1102 case OPTION_VERSION: 1103 ldversion (2); 1104 xexit (0); 1105 break; 1106 case OPTION_VERSION_SCRIPT: 1107 /* This option indicates a small script that only specifies 1108 version information. Read it, but don't assume that 1109 we've seen a linker script. */ 1110 { 1111 FILE *hold_script_handle; 1112 1113 hold_script_handle = saved_script_handle; 1114 ldfile_open_command_file (optarg); 1115 saved_script_handle = hold_script_handle; 1116 parser_input = input_version_script; 1117 yyparse (); 1118 } 1119 break; 1120 case OPTION_VERSION_EXPORTS_SECTION: 1121 /* This option records a version symbol to be applied to the 1122 symbols listed for export to be found in the object files 1123 .exports sections. */ 1124 command_line.version_exports_section = optarg; 1125 break; 1126 case OPTION_WARN_COMMON: 1127 config.warn_common = TRUE; 1128 break; 1129 case OPTION_WARN_CONSTRUCTORS: 1130 config.warn_constructors = TRUE; 1131 break; 1132 case OPTION_WARN_FATAL: 1133 config.fatal_warnings = TRUE; 1134 break; 1135 case OPTION_WARN_MULTIPLE_GP: 1136 config.warn_multiple_gp = TRUE; 1137 break; 1138 case OPTION_WARN_ONCE: 1139 config.warn_once = TRUE; 1140 break; 1141 case OPTION_WARN_SECTION_ALIGN: 1142 config.warn_section_align = TRUE; 1143 break; 1144 case OPTION_WHOLE_ARCHIVE: 1145 whole_archive = TRUE; 1146 break; 1147 case OPTION_AS_NEEDED: 1148/* XXX: --as-needed is broken on powerpc64 */ 1149#ifndef __powerpc64__ 1150 as_needed = TRUE; 1151 break; 1152#endif 1153 case OPTION_NO_AS_NEEDED: 1154 as_needed = FALSE; 1155 break; 1156 case OPTION_WRAP: 1157 add_wrap (optarg); 1158 break; 1159 case OPTION_DISCARD_NONE: 1160 link_info.discard = discard_none; 1161 break; 1162 case 'X': 1163 link_info.discard = discard_l; 1164 break; 1165 case 'x': 1166 link_info.discard = discard_all; 1167 break; 1168 case 'Y': 1169 if (strncmp (optarg, "P,", 2) == 0) 1170 optarg += 2; 1171 if (default_dirlist != NULL) 1172 free (default_dirlist); 1173 default_dirlist = xstrdup (optarg); 1174 break; 1175 case 'y': 1176 add_ysym (optarg); 1177 break; 1178 case OPTION_SPARE_DYNAMIC_TAGS: 1179 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1180 break; 1181 case OPTION_SPLIT_BY_RELOC: 1182 if (optarg != NULL) 1183 config.split_by_reloc = strtoul (optarg, NULL, 0); 1184 else 1185 config.split_by_reloc = 32768; 1186 break; 1187 case OPTION_SPLIT_BY_FILE: 1188 if (optarg != NULL) 1189 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1190 else 1191 config.split_by_file = 1; 1192 break; 1193 case OPTION_CHECK_SECTIONS: 1194 command_line.check_section_addresses = TRUE; 1195 break; 1196 case OPTION_NO_CHECK_SECTIONS: 1197 command_line.check_section_addresses = FALSE; 1198 break; 1199 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1200 command_line.accept_unknown_input_arch = TRUE; 1201 break; 1202 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1203 command_line.accept_unknown_input_arch = FALSE; 1204 break; 1205 case '(': 1206 if (ingroup) 1207 einfo (_("%P%F: may not nest groups (--help for usage)\n")); 1208 1209 lang_enter_group (); 1210 ingroup = 1; 1211 break; 1212 case ')': 1213 if (! ingroup) 1214 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1215 1216 lang_leave_group (); 1217 ingroup = 0; 1218 break; 1219 1220 case OPTION_INIT: 1221 link_info.init_function = optarg; 1222 break; 1223 1224 case OPTION_FINI: 1225 link_info.fini_function = optarg; 1226 break; 1227 } 1228 } 1229 1230 if (ingroup) 1231 lang_leave_group (); 1232 1233 if (default_dirlist != NULL) 1234 { 1235 set_default_dirlist (default_dirlist); 1236 free (default_dirlist); 1237 } 1238 1239 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1240 /* FIXME: Should we allow emulations a chance to set this ? */ 1241 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1242 1243 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1244 /* FIXME: Should we allow emulations a chance to set this ? */ 1245 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1246} 1247 1248/* Add the (colon-separated) elements of DIRLIST_PTR to the 1249 library search path. */ 1250 1251static void 1252set_default_dirlist (char *dirlist_ptr) 1253{ 1254 char *p; 1255 1256 while (1) 1257 { 1258 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1259 if (p != NULL) 1260 *p = '\0'; 1261 if (*dirlist_ptr != '\0') 1262 ldfile_add_library_path (dirlist_ptr, TRUE); 1263 if (p == NULL) 1264 break; 1265 dirlist_ptr = p + 1; 1266 } 1267} 1268 1269static void 1270set_section_start (char *sect, char *valstr) 1271{ 1272 const char *end; 1273 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1274 if (*end) 1275 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1276 lang_section_start (sect, exp_intop (val)); 1277} 1278 1279/* Print help messages for the options. */ 1280 1281static void 1282help (void) 1283{ 1284 unsigned i; 1285 const char **targets, **pp; 1286 1287 printf (_("Usage: %s [options] file...\n"), program_name); 1288 1289 printf (_("Options:\n")); 1290 for (i = 0; i < OPTION_COUNT; i++) 1291 { 1292 if (ld_options[i].doc != NULL) 1293 { 1294 bfd_boolean comma; 1295 int len; 1296 unsigned j; 1297 1298 printf (" "); 1299 1300 comma = FALSE; 1301 len = 2; 1302 1303 j = i; 1304 do 1305 { 1306 if (ld_options[j].shortopt != '\0' 1307 && ld_options[j].control != NO_HELP) 1308 { 1309 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1310 len += (comma ? 2 : 0) + 2; 1311 if (ld_options[j].arg != NULL) 1312 { 1313 if (ld_options[j].opt.has_arg != optional_argument) 1314 { 1315 printf (" "); 1316 ++len; 1317 } 1318 printf ("%s", _(ld_options[j].arg)); 1319 len += strlen (_(ld_options[j].arg)); 1320 } 1321 comma = TRUE; 1322 } 1323 ++j; 1324 } 1325 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1326 1327 j = i; 1328 do 1329 { 1330 if (ld_options[j].opt.name != NULL 1331 && ld_options[j].control != NO_HELP) 1332 { 1333 int two_dashes = 1334 (ld_options[j].control == TWO_DASHES 1335 || ld_options[j].control == EXACTLY_TWO_DASHES); 1336 1337 printf ("%s-%s%s", 1338 comma ? ", " : "", 1339 two_dashes ? "-" : "", 1340 ld_options[j].opt.name); 1341 len += ((comma ? 2 : 0) 1342 + 1 1343 + (two_dashes ? 1 : 0) 1344 + strlen (ld_options[j].opt.name)); 1345 if (ld_options[j].arg != NULL) 1346 { 1347 printf (" %s", _(ld_options[j].arg)); 1348 len += 1 + strlen (_(ld_options[j].arg)); 1349 } 1350 comma = TRUE; 1351 } 1352 ++j; 1353 } 1354 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1355 1356 if (len >= 30) 1357 { 1358 printf ("\n"); 1359 len = 0; 1360 } 1361 1362 for (; len < 30; len++) 1363 putchar (' '); 1364 1365 printf ("%s\n", _(ld_options[i].doc)); 1366 } 1367 } 1368 1369 /* Note: Various tools (such as libtool) depend upon the 1370 format of the listings below - do not change them. */ 1371 /* xgettext:c-format */ 1372 printf (_("%s: supported targets:"), program_name); 1373 targets = bfd_target_list (); 1374 for (pp = targets; *pp != NULL; pp++) 1375 printf (" %s", *pp); 1376 free (targets); 1377 printf ("\n"); 1378 1379 /* xgettext:c-format */ 1380 printf (_("%s: supported emulations: "), program_name); 1381 ldemul_list_emulations (stdout); 1382 printf ("\n"); 1383 1384 /* xgettext:c-format */ 1385 printf (_("%s: emulation specific options:\n"), program_name); 1386 ldemul_list_emulation_options (stdout); 1387 printf ("\n"); 1388 1389 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1390} 1391