1/* Parse options for the GNU linker. 2 Copyright (C) 1991-2017 Free Software Foundation, Inc. 3 4 This file is part of the GNU Binutils. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21#include "sysdep.h" 22#include "bfd.h" 23#include "bfdver.h" 24#include "libiberty.h" 25#include <stdio.h> 26#include <string.h> 27#include "safe-ctype.h" 28#include "getopt.h" 29#include "bfdlink.h" 30#include "ld.h" 31#include "ldmain.h" 32#include "ldmisc.h" 33#include "ldexp.h" 34#include "ldlang.h" 35#include <ldgram.h> 36#include "ldlex.h" 37#include "ldfile.h" 38#include "ldver.h" 39#include "ldemul.h" 40#include "demangle.h" 41#ifdef ENABLE_PLUGINS 42#include "plugin.h" 43#endif /* ENABLE_PLUGINS */ 44 45#ifndef PATH_SEPARATOR 46#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 47#define PATH_SEPARATOR ';' 48#else 49#define PATH_SEPARATOR ':' 50#endif 51#endif 52 53/* Somewhere above, sys/stat.h got included . . . . */ 54#if !defined(S_ISDIR) && defined(S_IFDIR) 55#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 56#endif 57 58static void set_default_dirlist (char *); 59static void set_section_start (char *, char *); 60static void set_segment_start (const char *, char *); 61static void help (void); 62 63/* The long options. This structure is used for both the option 64 parsing and the help text. */ 65 66enum control_enum { 67 /* Use one dash before long option name. */ 68 ONE_DASH = 1, 69 /* Use two dashes before long option name. */ 70 TWO_DASHES = 2, 71 /* Only accept two dashes before the long option name. 72 This is an overloading of the use of this enum, since originally it 73 was only intended to tell the --help display function how to display 74 the long option name. This feature was added in order to resolve 75 the confusion about the -omagic command line switch. Is it setting 76 the output file name to "magic" or is it setting the NMAGIC flag on 77 the output ? It has been decided that it is setting the output file 78 name, and that if you want to set the NMAGIC flag you should use -N 79 or --omagic. */ 80 EXACTLY_TWO_DASHES, 81 /* Don't mention this option in --help output. */ 82 NO_HELP 83}; 84 85struct ld_option 86{ 87 /* The long option information. */ 88 struct option opt; 89 /* The short option with the same meaning ('\0' if none). */ 90 char shortopt; 91 /* The name of the argument (NULL if none). */ 92 const char *arg; 93 /* The documentation string. If this is NULL, this is a synonym for 94 the previous option. */ 95 const char *doc; 96 enum control_enum control; 97}; 98 99static const struct ld_option ld_options[] = 100{ 101 { {NULL, required_argument, NULL, '\0'}, 102 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 103 ONE_DASH }, 104 { {"architecture", required_argument, NULL, 'A'}, 105 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 106 { {"format", required_argument, NULL, 'b'}, 107 'b', N_("TARGET"), N_("Specify target for following input files"), 108 TWO_DASHES }, 109 { {"mri-script", required_argument, NULL, 'c'}, 110 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 111 { {"dc", no_argument, NULL, 'd'}, 112 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 113 { {"dp", no_argument, NULL, 'd'}, 114 '\0', NULL, NULL, ONE_DASH }, 115 { {"entry", required_argument, NULL, 'e'}, 116 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 117 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 118 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 119 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC}, 120 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES }, 121 { {"EB", no_argument, NULL, OPTION_EB}, 122 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 123 { {"EL", no_argument, NULL, OPTION_EL}, 124 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 125 { {"auxiliary", required_argument, NULL, 'f'}, 126 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 127 TWO_DASHES }, 128 { {"filter", required_argument, NULL, 'F'}, 129 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 130 TWO_DASHES }, 131 { {NULL, no_argument, NULL, '\0'}, 132 'g', NULL, N_("Ignored"), ONE_DASH }, 133 { {"gpsize", required_argument, NULL, 'G'}, 134 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 135 TWO_DASHES }, 136 { {"soname", required_argument, NULL, OPTION_SONAME}, 137 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 138 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 139 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 140 TWO_DASHES }, 141 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER}, 142 '\0', NULL, N_("Produce an executable with no program interpreter header"), 143 TWO_DASHES }, 144 { {"library", required_argument, NULL, 'l'}, 145 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 146 { {"library-path", required_argument, NULL, 'L'}, 147 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 148 TWO_DASHES }, 149 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 150 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 151 { {NULL, required_argument, NULL, '\0'}, 152 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 153 { {"print-map", no_argument, NULL, 'M'}, 154 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 155 { {"nmagic", no_argument, NULL, 'n'}, 156 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 157 { {"omagic", no_argument, NULL, 'N'}, 158 'N', NULL, N_("Do not page align data, do not make text readonly"), 159 EXACTLY_TWO_DASHES }, 160 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 161 '\0', NULL, N_("Page align data, make text readonly"), 162 EXACTLY_TWO_DASHES }, 163 { {"output", required_argument, NULL, 'o'}, 164 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 165 { {NULL, required_argument, NULL, '\0'}, 166 'O', NULL, N_("Optimize output file"), ONE_DASH }, 167 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB}, 168 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES }, 169#ifdef ENABLE_PLUGINS 170 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 171 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 172 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 173 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 174 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 175 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 176 ONE_DASH }, 177 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 178 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 179 ONE_DASH }, 180#endif /* ENABLE_PLUGINS */ 181 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 182 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 183 ONE_DASH }, 184 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 185 '\0', NULL, N_("Ignored for gold option compatibility"), 186 TWO_DASHES }, 187 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 188 '\0', NULL, N_("Ignored for gold option compatibility"), 189 TWO_DASHES }, 190 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 191 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 192 { {"emit-relocs", no_argument, NULL, 'q'}, 193 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 194 { {"relocatable", no_argument, NULL, 'r'}, 195 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 196 { {NULL, no_argument, NULL, '\0'}, 197 'i', NULL, NULL, ONE_DASH }, 198 { {"just-symbols", required_argument, NULL, 'R'}, 199 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 200 TWO_DASHES }, 201 { {"strip-all", no_argument, NULL, 's'}, 202 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 203 { {"strip-debug", no_argument, NULL, 'S'}, 204 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 205 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 206 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 207 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 208 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 209 { {"trace", no_argument, NULL, 't'}, 210 't', NULL, N_("Trace file opens"), TWO_DASHES }, 211 { {"script", required_argument, NULL, 'T'}, 212 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 213 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 214 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 215 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 216 '\0', NULL, NULL, ONE_DASH }, 217 { {"undefined", required_argument, NULL, 'u'}, 218 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 219 TWO_DASHES }, 220 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, 221 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), 222 TWO_DASHES }, 223 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 224 '\0', N_("[=SECTION]"), 225 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 226 { {"Ur", no_argument, NULL, OPTION_UR}, 227 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 228 { {"version", no_argument, NULL, OPTION_VERSION}, 229 'v', NULL, N_("Print version information"), TWO_DASHES }, 230 { {NULL, no_argument, NULL, '\0'}, 231 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 232 { {"discard-all", no_argument, NULL, 'x'}, 233 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 234 { {"discard-locals", no_argument, NULL, 'X'}, 235 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 236 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 237 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 238 { {"trace-symbol", required_argument, NULL, 'y'}, 239 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 240 { {NULL, required_argument, NULL, '\0'}, 241 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 242 ONE_DASH }, 243 { {"start-group", no_argument, NULL, '('}, 244 '(', NULL, N_("Start a group"), TWO_DASHES }, 245 { {"end-group", no_argument, NULL, ')'}, 246 ')', NULL, N_("End a group"), TWO_DASHES }, 247 { {"accept-unknown-input-arch", no_argument, NULL, 248 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 249 '\0', NULL, 250 N_("Accept input files whose architecture cannot be determined"), 251 TWO_DASHES }, 252 { {"no-accept-unknown-input-arch", no_argument, NULL, 253 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 254 '\0', NULL, N_("Reject input files whose architecture is unknown"), 255 TWO_DASHES }, 256 257 /* The next two options are deprecated because of their similarity to 258 --as-needed and --no-as-needed. They have been replaced by 259 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 260 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 261 '\0', NULL, NULL, NO_HELP }, 262 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 263 '\0', NULL, NULL, NO_HELP }, 264 265 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 266 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 267 TWO_DASHES }, 268 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 269 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 270 " the command line"), 271 TWO_DASHES }, 272 { {"assert", required_argument, NULL, OPTION_ASSERT}, 273 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 274 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 275 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 276 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 277 '\0', NULL, NULL, ONE_DASH }, 278 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 279 '\0', NULL, NULL, ONE_DASH }, 280 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 281 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 282 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 283 '\0', NULL, NULL, ONE_DASH }, 284 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 285 '\0', NULL, NULL, ONE_DASH }, 286 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 287 '\0', NULL, NULL, ONE_DASH }, 288 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 289 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 290 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 291 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 292 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 293 '\0', NULL, N_("Check section addresses for overlaps (default)"), 294 TWO_DASHES }, 295 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 296 '\0', NULL, N_("Do not check section addresses for overlaps"), 297 TWO_DASHES }, 298 { {"copy-dt-needed-entries", no_argument, NULL, 299 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 300 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 301 TWO_DASHES }, 302 { {"no-copy-dt-needed-entries", no_argument, NULL, 303 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 304 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 305 TWO_DASHES }, 306 307 { {"cref", no_argument, NULL, OPTION_CREF}, 308 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 309 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 310 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 311 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 312 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 313 TWO_DASHES }, 314 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 315 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 316 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 317 '\0', NULL, N_("Treat warnings as errors"), 318 TWO_DASHES }, 319 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 320 '\0', NULL, N_("Do not treat warnings as errors (default)"), 321 TWO_DASHES }, 322 { {"fini", required_argument, NULL, OPTION_FINI}, 323 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 324 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 325 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 326 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 327 '\0', NULL, N_("Remove unused sections (on some targets)"), 328 TWO_DASHES }, 329 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 330 '\0', NULL, N_("Don't remove unused sections (default)"), 331 TWO_DASHES }, 332 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 333 '\0', NULL, N_("List removed unused sections on stderr"), 334 TWO_DASHES }, 335 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 336 '\0', NULL, N_("Do not list removed unused sections"), 337 TWO_DASHES }, 338 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED}, 339 '\0', NULL, N_("Keep exported symbols when removing unused sections"), 340 TWO_DASHES }, 341 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 342 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 343 TWO_DASHES }, 344 { {"help", no_argument, NULL, OPTION_HELP}, 345 '\0', NULL, N_("Print option help"), TWO_DASHES }, 346 { {"init", required_argument, NULL, OPTION_INIT}, 347 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 348 { {"Map", required_argument, NULL, OPTION_MAP}, 349 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 350 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 351 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 352 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 353 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 354 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 355 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 356 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 357 '\0', NULL, N_("Do not allow unresolved references in object files"), 358 TWO_DASHES }, 359 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 360 '\0', NULL, N_("Allow unresolved references in shared libraries"), 361 TWO_DASHES }, 362 { {"no-allow-shlib-undefined", no_argument, NULL, 363 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 364 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 365 TWO_DASHES }, 366 { {"allow-multiple-definition", no_argument, NULL, 367 OPTION_ALLOW_MULTIPLE_DEFINITION}, 368 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 369 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 370 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 371 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 372 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 373 { {"default-imported-symver", no_argument, NULL, 374 OPTION_DEFAULT_IMPORTED_SYMVER}, 375 '\0', NULL, N_("Create default symbol version for imported symbols"), 376 TWO_DASHES }, 377 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 378 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 379 { {"no-warn-search-mismatch", no_argument, NULL, 380 OPTION_NO_WARN_SEARCH_MISMATCH}, 381 '\0', NULL, N_("Don't warn on finding an incompatible library"), 382 TWO_DASHES}, 383 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 384 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 385 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 386 '\0', NULL, N_("Create an output file even if errors occur"), 387 TWO_DASHES }, 388 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 389 '\0', NULL, NULL, NO_HELP }, 390 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 391 '\0', NULL, N_("Only use library directories specified on\n" 392 " the command line"), 393 ONE_DASH }, 394 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 395 '\0', N_("TARGET"), N_("Specify target of output file"), 396 EXACTLY_TWO_DASHES }, 397 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 398 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 399 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 400 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 401 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 402 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 403 { {"reduce-memory-overheads", no_argument, NULL, 404 OPTION_REDUCE_MEMORY_OVERHEADS}, 405 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 406 TWO_DASHES }, 407 { {"relax", no_argument, NULL, OPTION_RELAX}, 408 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 409 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 410 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 411 { {"retain-symbols-file", required_argument, NULL, 412 OPTION_RETAIN_SYMBOLS_FILE}, 413 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 414 { {"rpath", required_argument, NULL, OPTION_RPATH}, 415 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 416 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 417 '\0', N_("PATH"), N_("Set link time shared library search path"), 418 ONE_DASH }, 419 { {"shared", no_argument, NULL, OPTION_SHARED}, 420 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 421 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 422 '\0', NULL, NULL, ONE_DASH }, 423 { {"pie", no_argument, NULL, OPTION_PIE}, 424 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 425 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 426 '\0', NULL, NULL, TWO_DASHES }, 427 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 428 '\0', N_("[=ascending|descending]"), 429 N_("Sort common symbols by alignment [in specified order]"), 430 TWO_DASHES }, 431 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 432 '\0', NULL, NULL, NO_HELP }, 433 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 434 '\0', N_("name|alignment"), 435 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 436 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 437 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 438 TWO_DASHES }, 439 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 440 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 441 TWO_DASHES }, 442 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 443 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 444 TWO_DASHES }, 445 { {"stats", no_argument, NULL, OPTION_STATS}, 446 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 447 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 448 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 449 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 450 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 451 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 452 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 453 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 454 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 455 TWO_DASHES }, 456 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 457 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 458 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 459 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 460 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 461 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 462 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 463 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 464 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 465 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 466 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 467 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 468 { {"unresolved-symbols=<method>", required_argument, NULL, 469 OPTION_UNRESOLVED_SYMBOLS}, 470 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 471 " ignore-all, report-all, ignore-in-object-files,\n" 472 " ignore-in-shared-libs"), 473 TWO_DASHES }, 474 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 475 '\0', N_("[=NUMBER]"), 476 N_("Output lots of information during link"), TWO_DASHES }, 477 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 478 '\0', NULL, NULL, NO_HELP }, 479 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 480 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 481 { {"version-exports-section", required_argument, NULL, 482 OPTION_VERSION_EXPORTS_SECTION }, 483 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 484 " SYMBOL as the version."), 485 TWO_DASHES }, 486 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 487 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 488 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 489 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 490 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 491 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 492 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 493 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 494 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 495 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 496 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 497 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 498 TWO_DASHES }, 499 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 500 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 501 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 502 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 503 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 504 '\0', NULL, N_("Warn if start of section changes due to alignment"), 505 TWO_DASHES }, 506 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 507 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 508 TWO_DASHES }, 509 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 510 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 511 TWO_DASHES }, 512 { {"warn-unresolved-symbols", no_argument, NULL, 513 OPTION_WARN_UNRESOLVED_SYMBOLS}, 514 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 515 { {"error-unresolved-symbols", no_argument, NULL, 516 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 517 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 518 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 519 '\0', NULL, N_("Include all objects from following archives"), 520 TWO_DASHES }, 521 { {"wrap", required_argument, NULL, OPTION_WRAP}, 522 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 523 { {"ignore-unresolved-symbol", required_argument, NULL, 524 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 525 '\0', N_("SYMBOL"), 526 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 527 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 528 '\0', NULL, N_("Push state of flags governing input file handling"), 529 TWO_DASHES }, 530 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 531 '\0', NULL, N_("Pop state of flags governing input file handling"), 532 TWO_DASHES }, 533 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 534 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 535 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 536 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 537 TWO_DASHES }, 538}; 539 540#define OPTION_COUNT ARRAY_SIZE (ld_options) 541 542void 543parse_args (unsigned argc, char **argv) 544{ 545 unsigned i; 546 int is, il, irl; 547 int ingroup = 0; 548 char *default_dirlist = NULL; 549 char *shortopts; 550 struct option *longopts; 551 struct option *really_longopts; 552 int last_optind; 553 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 554 555 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 556 longopts = (struct option *) 557 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 558 really_longopts = (struct option *) 559 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 560 561 /* Starting the short option string with '-' is for programs that 562 expect options and other ARGV-elements in any order and that care about 563 the ordering of the two. We describe each non-option ARGV-element 564 as if it were the argument of an option with character code 1. */ 565 shortopts[0] = '-'; 566 is = 1; 567 il = 0; 568 irl = 0; 569 for (i = 0; i < OPTION_COUNT; i++) 570 { 571 if (ld_options[i].shortopt != '\0') 572 { 573 shortopts[is] = ld_options[i].shortopt; 574 ++is; 575 if (ld_options[i].opt.has_arg == required_argument 576 || ld_options[i].opt.has_arg == optional_argument) 577 { 578 shortopts[is] = ':'; 579 ++is; 580 if (ld_options[i].opt.has_arg == optional_argument) 581 { 582 shortopts[is] = ':'; 583 ++is; 584 } 585 } 586 } 587 if (ld_options[i].opt.name != NULL) 588 { 589 if (ld_options[i].control == EXACTLY_TWO_DASHES) 590 { 591 really_longopts[irl] = ld_options[i].opt; 592 ++irl; 593 } 594 else 595 { 596 longopts[il] = ld_options[i].opt; 597 ++il; 598 } 599 } 600 } 601 shortopts[is] = '\0'; 602 longopts[il].name = NULL; 603 really_longopts[irl].name = NULL; 604 605 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 606 607 /* The -G option is ambiguous on different platforms. Sometimes it 608 specifies the largest data size to put into the small data 609 section. Sometimes it is equivalent to --shared. Unfortunately, 610 the first form takes an argument, while the second does not. 611 612 We need to permit the --shared form because on some platforms, 613 such as Solaris, gcc -shared will pass -G to the linker. 614 615 To permit either usage, we look through the argument list. If we 616 find -G not followed by a number, we change it into --shared. 617 This will work for most normal cases. */ 618 for (i = 1; i < argc; i++) 619 if (strcmp (argv[i], "-G") == 0 620 && (i + 1 >= argc 621 || ! ISDIGIT (argv[i + 1][0]))) 622 argv[i] = (char *) "--shared"; 623 624 /* Because we permit long options to start with a single dash, and 625 we have a --library option, and the -l option is conventionally 626 used with an immediately following argument, we can have bad 627 results if somebody tries to use -l with a library whose name 628 happens to start with "ibrary", as in -li. We avoid problems by 629 simply turning -l into --library. This means that users will 630 have to use two dashes in order to use --library, which is OK 631 since that's how it is documented. 632 633 FIXME: It's possible that this problem can arise for other short 634 options as well, although the user does always have the recourse 635 of adding a space between the option and the argument. */ 636 for (i = 1; i < argc; i++) 637 { 638 if (argv[i][0] == '-' 639 && argv[i][1] == 'l' 640 && argv[i][2] != '\0') 641 { 642 char *n; 643 644 n = (char *) xmalloc (strlen (argv[i]) + 20); 645 sprintf (n, "--library=%s", argv[i] + 2); 646 argv[i] = n; 647 } 648 } 649 650 last_optind = -1; 651 while (1) 652 { 653 int longind; 654 int optc; 655 static unsigned int defsym_count; 656 657 /* Using last_optind lets us avoid calling ldemul_parse_args 658 multiple times on a single option, which would lead to 659 confusion in the internal static variables maintained by 660 getopt. This could otherwise happen for an argument like 661 -nx, in which the -n is parsed as a single option, and we 662 loop around to pick up the -x. */ 663 if (optind != last_optind) 664 if (ldemul_parse_args (argc, argv)) 665 continue; 666 667 /* getopt_long_only is like getopt_long, but '-' as well as '--' 668 can indicate a long option. */ 669 opterr = 0; 670 last_optind = optind; 671 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 672 if (optc == '?') 673 { 674 optind = last_optind; 675 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 676 } 677 678 if (ldemul_handle_option (optc)) 679 continue; 680 681 if (optc == -1) 682 break; 683 684 switch (optc) 685 { 686 case '?': 687 { 688 /* If the last word on the command line is an option that 689 requires an argument, getopt will refuse to recognise it. 690 Try to catch such options here and issue a more helpful 691 error message than just "unrecognized option". */ 692 int opt; 693 694 for (opt = ARRAY_SIZE (ld_options); opt--;) 695 if (ld_options[opt].opt.has_arg == required_argument 696 /* FIXME: There are a few short options that do not 697 have long equivalents, but which require arguments. 698 We should handle them too. */ 699 && ld_options[opt].opt.name != NULL 700 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 701 { 702 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 703 break; 704 } 705 706 if (opt == -1) 707 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 708 } 709 /* Fall through. */ 710 711 default: 712 einfo (_("%P%F: use the --help option for usage information\n")); 713 break; 714 715 case 1: /* File name. */ 716 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 717 break; 718 719 case OPTION_IGNORE: 720 break; 721 case 'a': 722 /* For HP/UX compatibility. Actually -a shared should mean 723 ``use only shared libraries'' but, then, we don't 724 currently support shared libraries on HP/UX anyhow. */ 725 if (strcmp (optarg, "archive") == 0) 726 input_flags.dynamic = FALSE; 727 else if (strcmp (optarg, "shared") == 0 728 || strcmp (optarg, "default") == 0) 729 input_flags.dynamic = TRUE; 730 else 731 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 732 break; 733 case OPTION_ASSERT: 734 /* FIXME: We just ignore these, but we should handle them. */ 735 if (strcmp (optarg, "definitions") == 0) 736 ; 737 else if (strcmp (optarg, "nodefinitions") == 0) 738 ; 739 else if (strcmp (optarg, "nosymbolic") == 0) 740 ; 741 else if (strcmp (optarg, "pure-text") == 0) 742 ; 743 else 744 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 745 break; 746 case 'A': 747 ldfile_add_arch (optarg); 748 break; 749 case 'b': 750 lang_add_target (optarg); 751 break; 752 case 'c': 753 ldfile_open_command_file (optarg); 754 parser_input = input_mri_script; 755 yyparse (); 756 break; 757 case OPTION_CALL_SHARED: 758 input_flags.dynamic = TRUE; 759 break; 760 case OPTION_NON_SHARED: 761 input_flags.dynamic = FALSE; 762 break; 763 case OPTION_CREF: 764 command_line.cref = TRUE; 765 link_info.notice_all = TRUE; 766 break; 767 case 'd': 768 command_line.force_common_definition = TRUE; 769 break; 770 case OPTION_DEFSYM: 771 lex_string = optarg; 772 lex_redirect (optarg, "--defsym", ++defsym_count); 773 parser_input = input_defsym; 774 yyparse (); 775 lex_string = NULL; 776 break; 777 case OPTION_DEMANGLE: 778 demangling = TRUE; 779 if (optarg != NULL) 780 { 781 enum demangling_styles style; 782 783 style = cplus_demangle_name_to_style (optarg); 784 if (style == unknown_demangling) 785 einfo (_("%F%P: unknown demangling style `%s'\n"), 786 optarg); 787 788 cplus_demangle_set_style (style); 789 } 790 break; 791 case 'I': /* Used on Solaris. */ 792 case OPTION_DYNAMIC_LINKER: 793 command_line.interpreter = optarg; 794 link_info.nointerp = 0; 795 break; 796 case OPTION_NO_DYNAMIC_LINKER: 797 link_info.nointerp = 1; 798 break; 799 case OPTION_SYSROOT: 800 /* Already handled in ldmain.c. */ 801 break; 802 case OPTION_EB: 803 command_line.endian = ENDIAN_BIG; 804 break; 805 case OPTION_EL: 806 command_line.endian = ENDIAN_LITTLE; 807 break; 808 case OPTION_EMBEDDED_RELOCS: 809 command_line.embedded_relocs = TRUE; 810 break; 811 case OPTION_EXPORT_DYNAMIC: 812 case 'E': /* HP/UX compatibility. */ 813 link_info.export_dynamic = TRUE; 814 break; 815 case OPTION_NO_EXPORT_DYNAMIC: 816 link_info.export_dynamic = FALSE; 817 break; 818 case 'e': 819 lang_add_entry (optarg, TRUE); 820 break; 821 case 'f': 822 if (command_line.auxiliary_filters == NULL) 823 { 824 command_line.auxiliary_filters = (char **) 825 xmalloc (2 * sizeof (char *)); 826 command_line.auxiliary_filters[0] = optarg; 827 command_line.auxiliary_filters[1] = NULL; 828 } 829 else 830 { 831 int c; 832 char **p; 833 834 c = 0; 835 for (p = command_line.auxiliary_filters; *p != NULL; p++) 836 ++c; 837 command_line.auxiliary_filters = (char **) 838 xrealloc (command_line.auxiliary_filters, 839 (c + 2) * sizeof (char *)); 840 command_line.auxiliary_filters[c] = optarg; 841 command_line.auxiliary_filters[c + 1] = NULL; 842 } 843 break; 844 case 'F': 845 command_line.filter_shlib = optarg; 846 break; 847 case OPTION_FORCE_EXE_SUFFIX: 848 command_line.force_exe_suffix = TRUE; 849 break; 850 case 'G': 851 { 852 char *end; 853 g_switch_value = strtoul (optarg, &end, 0); 854 if (*end) 855 einfo (_("%P%F: invalid number `%s'\n"), optarg); 856 } 857 break; 858 case 'g': 859 /* Ignore. */ 860 break; 861 case OPTION_GC_SECTIONS: 862 link_info.gc_sections = TRUE; 863 break; 864 case OPTION_PRINT_GC_SECTIONS: 865 link_info.print_gc_sections = TRUE; 866 break; 867 case OPTION_GC_KEEP_EXPORTED: 868 link_info.gc_keep_exported = TRUE; 869 break; 870 case OPTION_HELP: 871 help (); 872 xexit (0); 873 break; 874 case 'L': 875 ldfile_add_library_path (optarg, TRUE); 876 break; 877 case 'l': 878 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 879 break; 880 case 'M': 881 config.map_filename = "-"; 882 break; 883 case 'm': 884 /* Ignore. Was handled in a pre-parse. */ 885 break; 886 case OPTION_MAP: 887 config.map_filename = optarg; 888 break; 889 case 'N': 890 config.text_read_only = FALSE; 891 config.magic_demand_paged = FALSE; 892 input_flags.dynamic = FALSE; 893 break; 894 case OPTION_NO_OMAGIC: 895 config.text_read_only = TRUE; 896 config.magic_demand_paged = TRUE; 897 /* NB/ Does not set input_flags.dynamic to TRUE. 898 Use --call-shared or -Bdynamic for this. */ 899 break; 900 case 'n': 901 config.magic_demand_paged = FALSE; 902 input_flags.dynamic = FALSE; 903 break; 904 case OPTION_NO_DEFINE_COMMON: 905 command_line.inhibit_common_definition = TRUE; 906 break; 907 case OPTION_NO_DEMANGLE: 908 demangling = FALSE; 909 break; 910 case OPTION_NO_GC_SECTIONS: 911 link_info.gc_sections = FALSE; 912 break; 913 case OPTION_NO_PRINT_GC_SECTIONS: 914 link_info.print_gc_sections = FALSE; 915 break; 916 case OPTION_NO_KEEP_MEMORY: 917 link_info.keep_memory = FALSE; 918 break; 919 case OPTION_NO_UNDEFINED: 920 link_info.unresolved_syms_in_objects 921 = how_to_report_unresolved_symbols; 922 break; 923 case OPTION_ALLOW_SHLIB_UNDEFINED: 924 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 925 break; 926 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 927 link_info.unresolved_syms_in_shared_libs 928 = how_to_report_unresolved_symbols; 929 break; 930 case OPTION_UNRESOLVED_SYMBOLS: 931 if (strcmp (optarg, "ignore-all") == 0) 932 { 933 link_info.unresolved_syms_in_objects = RM_IGNORE; 934 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 935 } 936 else if (strcmp (optarg, "report-all") == 0) 937 { 938 link_info.unresolved_syms_in_objects 939 = how_to_report_unresolved_symbols; 940 link_info.unresolved_syms_in_shared_libs 941 = how_to_report_unresolved_symbols; 942 } 943 else if (strcmp (optarg, "ignore-in-object-files") == 0) 944 { 945 link_info.unresolved_syms_in_objects = RM_IGNORE; 946 link_info.unresolved_syms_in_shared_libs 947 = how_to_report_unresolved_symbols; 948 } 949 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 950 { 951 link_info.unresolved_syms_in_objects 952 = how_to_report_unresolved_symbols; 953 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 954 } 955 else 956 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 957 break; 958 case OPTION_WARN_UNRESOLVED_SYMBOLS: 959 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 960 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 961 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 962 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 963 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 964 break; 965 966 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 967 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 968 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 969 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 970 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 971 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 972 break; 973 case OPTION_ALLOW_MULTIPLE_DEFINITION: 974 link_info.allow_multiple_definition = TRUE; 975 break; 976 case OPTION_NO_UNDEFINED_VERSION: 977 link_info.allow_undefined_version = FALSE; 978 break; 979 case OPTION_DEFAULT_SYMVER: 980 link_info.create_default_symver = TRUE; 981 break; 982 case OPTION_DEFAULT_IMPORTED_SYMVER: 983 link_info.default_imported_symver = TRUE; 984 break; 985 case OPTION_NO_WARN_MISMATCH: 986 command_line.warn_mismatch = FALSE; 987 break; 988 case OPTION_NO_WARN_SEARCH_MISMATCH: 989 command_line.warn_search_mismatch = FALSE; 990 break; 991 case OPTION_NOINHIBIT_EXEC: 992 force_make_executable = TRUE; 993 break; 994 case OPTION_NOSTDLIB: 995 config.only_cmd_line_lib_dirs = TRUE; 996 break; 997 case OPTION_NO_WHOLE_ARCHIVE: 998 input_flags.whole_archive = FALSE; 999 break; 1000 case 'O': 1001 /* FIXME "-O<non-digits> <value>" used to set the address of 1002 section <non-digits>. Was this for compatibility with 1003 something, or can we create a new option to do that 1004 (with a syntax similar to -defsym)? 1005 getopt can't handle two args to an option without kludges. */ 1006 1007 /* Enable optimizations of output files. */ 1008 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1009 break; 1010 case 'o': 1011 lang_add_output (optarg, 0); 1012 break; 1013 case OPTION_OFORMAT: 1014 lang_add_output_format (optarg, NULL, NULL, 0); 1015 break; 1016 case OPTION_OUT_IMPLIB: 1017 command_line.out_implib_filename = xstrdup (optarg); 1018 break; 1019 case OPTION_PRINT_SYSROOT: 1020 if (*ld_sysroot) 1021 puts (ld_sysroot); 1022 xexit (0); 1023 break; 1024 case OPTION_PRINT_OUTPUT_FORMAT: 1025 command_line.print_output_format = TRUE; 1026 break; 1027#ifdef ENABLE_PLUGINS 1028 case OPTION_PLUGIN: 1029 plugin_opt_plugin (optarg); 1030 break; 1031 case OPTION_PLUGIN_OPT: 1032 if (plugin_opt_plugin_arg (optarg)) 1033 einfo (_("%P%F: bad -plugin-opt option\n")); 1034 break; 1035#endif /* ENABLE_PLUGINS */ 1036 case 'q': 1037 link_info.emitrelocations = TRUE; 1038 break; 1039 case 'i': 1040 case 'r': 1041 if (optind == last_optind) 1042 /* This can happen if the user put "-rpath,a" on the command 1043 line. (Or something similar. The comma is important). 1044 Getopt becomes confused and thinks that this is a -r option 1045 but it cannot parse the text after the -r so it refuses to 1046 increment the optind counter. Detect this case and issue 1047 an error message here. We cannot just make this a warning, 1048 increment optind, and continue because getopt is too confused 1049 and will seg-fault the next time around. */ 1050 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]); 1051 1052 if (bfd_link_pic (&link_info)) 1053 einfo (_("%P%F: -r and %s may not be used together\n"), 1054 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1055 1056 link_info.type = type_relocatable; 1057 config.build_constructors = FALSE; 1058 config.magic_demand_paged = FALSE; 1059 config.text_read_only = FALSE; 1060 input_flags.dynamic = FALSE; 1061 break; 1062 case 'R': 1063 /* The GNU linker traditionally uses -R to mean to include 1064 only the symbols from a file. The Solaris linker uses -R 1065 to set the path used by the runtime linker to find 1066 libraries. This is the GNU linker -rpath argument. We 1067 try to support both simultaneously by checking the file 1068 named. If it is a directory, rather than a regular file, 1069 we assume -rpath was meant. */ 1070 { 1071 struct stat s; 1072 1073 if (stat (optarg, &s) >= 0 1074 && ! S_ISDIR (s.st_mode)) 1075 { 1076 lang_add_input_file (optarg, 1077 lang_input_file_is_symbols_only_enum, 1078 NULL); 1079 break; 1080 } 1081 } 1082 /* Fall through. */ 1083 case OPTION_RPATH: 1084 if (command_line.rpath == NULL) 1085 command_line.rpath = xstrdup (optarg); 1086 else 1087 { 1088 size_t rpath_len = strlen (command_line.rpath); 1089 size_t optarg_len = strlen (optarg); 1090 char *buf; 1091 char *cp = command_line.rpath; 1092 1093 /* First see whether OPTARG is already in the path. */ 1094 do 1095 { 1096 if (strncmp (optarg, cp, optarg_len) == 0 1097 && (cp[optarg_len] == 0 1098 || cp[optarg_len] == config.rpath_separator)) 1099 /* We found it. */ 1100 break; 1101 1102 /* Not yet found. */ 1103 cp = strchr (cp, config.rpath_separator); 1104 if (cp != NULL) 1105 ++cp; 1106 } 1107 while (cp != NULL); 1108 1109 if (cp == NULL) 1110 { 1111 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1112 sprintf (buf, "%s%c%s", command_line.rpath, 1113 config.rpath_separator, optarg); 1114 free (command_line.rpath); 1115 command_line.rpath = buf; 1116 } 1117 } 1118 break; 1119 case OPTION_RPATH_LINK: 1120 if (command_line.rpath_link == NULL) 1121 command_line.rpath_link = xstrdup (optarg); 1122 else 1123 { 1124 char *buf; 1125 1126 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1127 + strlen (optarg) 1128 + 2); 1129 sprintf (buf, "%s%c%s", command_line.rpath_link, 1130 config.rpath_separator, optarg); 1131 free (command_line.rpath_link); 1132 command_line.rpath_link = buf; 1133 } 1134 break; 1135 case OPTION_NO_RELAX: 1136 DISABLE_RELAXATION; 1137 break; 1138 case OPTION_RELAX: 1139 ENABLE_RELAXATION; 1140 break; 1141 case OPTION_RETAIN_SYMBOLS_FILE: 1142 add_keepsyms_file (optarg); 1143 break; 1144 case 'S': 1145 link_info.strip = strip_debugger; 1146 break; 1147 case 's': 1148 link_info.strip = strip_all; 1149 break; 1150 case OPTION_STRIP_DISCARDED: 1151 link_info.strip_discarded = TRUE; 1152 break; 1153 case OPTION_NO_STRIP_DISCARDED: 1154 link_info.strip_discarded = FALSE; 1155 break; 1156 case OPTION_SHARED: 1157 if (config.has_shared) 1158 { 1159 if (bfd_link_relocatable (&link_info)) 1160 einfo (_("%P%F: -r and -shared may not be used together\n")); 1161 1162 link_info.type = type_dll; 1163 /* When creating a shared library, the default 1164 behaviour is to ignore any unresolved references. */ 1165 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1166 link_info.unresolved_syms_in_objects = RM_IGNORE; 1167 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1168 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1169 } 1170 else 1171 einfo (_("%P%F: -shared not supported\n")); 1172 break; 1173 case OPTION_PIE: 1174 if (config.has_shared) 1175 { 1176 if (bfd_link_relocatable (&link_info)) 1177 einfo (_("%P%F: -r and -pie may not be used together\n")); 1178 1179 link_info.type = type_pie; 1180 } 1181 else 1182 einfo (_("%P%F: -pie not supported\n")); 1183 break; 1184 case 'h': /* Used on Solaris. */ 1185 case OPTION_SONAME: 1186 if (optarg[0] == '\0' && command_line.soname 1187 && command_line.soname[0]) 1188 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1189 else 1190 command_line.soname = optarg; 1191 break; 1192 case OPTION_SORT_COMMON: 1193 if (optarg == NULL 1194 || strcmp (optarg, N_("descending")) == 0) 1195 config.sort_common = sort_descending; 1196 else if (strcmp (optarg, N_("ascending")) == 0) 1197 config.sort_common = sort_ascending; 1198 else 1199 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1200 optarg); 1201 break; 1202 case OPTION_SORT_SECTION: 1203 if (strcmp (optarg, N_("name")) == 0) 1204 sort_section = by_name; 1205 else if (strcmp (optarg, N_("alignment")) == 0) 1206 sort_section = by_alignment; 1207 else 1208 einfo (_("%P%F: invalid section sorting option: %s\n"), 1209 optarg); 1210 break; 1211 case OPTION_STATS: 1212 config.stats = TRUE; 1213 break; 1214 case OPTION_SYMBOLIC: 1215 command_line.symbolic = symbolic; 1216 break; 1217 case OPTION_SYMBOLIC_FUNCTIONS: 1218 command_line.symbolic = symbolic_functions; 1219 break; 1220 case 't': 1221 trace_files = TRUE; 1222 break; 1223 case 'T': 1224 previous_script_handle = saved_script_handle; 1225 ldfile_open_command_file (optarg); 1226 parser_input = input_script; 1227 yyparse (); 1228 previous_script_handle = NULL; 1229 break; 1230 case OPTION_DEFAULT_SCRIPT: 1231 command_line.default_script = optarg; 1232 break; 1233 case OPTION_SECTION_START: 1234 { 1235 char *optarg2; 1236 char *sec_name; 1237 int len; 1238 1239 /* Check for <something>=<somthing>... */ 1240 optarg2 = strchr (optarg, '='); 1241 if (optarg2 == NULL) 1242 einfo (_("%P%F: invalid argument to option" 1243 " \"--section-start\"\n")); 1244 1245 optarg2++; 1246 1247 /* So far so good. Are all the args present? */ 1248 if ((*optarg == '\0') || (*optarg2 == '\0')) 1249 einfo (_("%P%F: missing argument(s) to option" 1250 " \"--section-start\"\n")); 1251 1252 /* We must copy the section name as set_section_start 1253 doesn't do it for us. */ 1254 len = optarg2 - optarg; 1255 sec_name = (char *) xmalloc (len); 1256 memcpy (sec_name, optarg, len - 1); 1257 sec_name[len - 1] = 0; 1258 1259 /* Then set it... */ 1260 set_section_start (sec_name, optarg2); 1261 } 1262 break; 1263 case OPTION_TARGET_HELP: 1264 /* Mention any target specific options. */ 1265 ldemul_list_emulation_options (stdout); 1266 exit (0); 1267 case OPTION_TBSS: 1268 set_segment_start (".bss", optarg); 1269 break; 1270 case OPTION_TDATA: 1271 set_segment_start (".data", optarg); 1272 break; 1273 case OPTION_TTEXT: 1274 set_segment_start (".text", optarg); 1275 break; 1276 case OPTION_TTEXT_SEGMENT: 1277 set_segment_start (".text-segment", optarg); 1278 break; 1279 case OPTION_TRODATA_SEGMENT: 1280 set_segment_start (".rodata-segment", optarg); 1281 break; 1282 case OPTION_TLDATA_SEGMENT: 1283 set_segment_start (".ldata-segment", optarg); 1284 break; 1285 case OPTION_TRADITIONAL_FORMAT: 1286 link_info.traditional_format = TRUE; 1287 break; 1288 case OPTION_TASK_LINK: 1289 link_info.task_link = TRUE; 1290 /* Fall through. */ 1291 case OPTION_UR: 1292 if (bfd_link_pic (&link_info)) 1293 einfo (_("%P%F: -r and %s may not be used together\n"), 1294 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1295 1296 link_info.type = type_relocatable; 1297 config.build_constructors = TRUE; 1298 config.magic_demand_paged = FALSE; 1299 config.text_read_only = FALSE; 1300 input_flags.dynamic = FALSE; 1301 break; 1302 case 'u': 1303 ldlang_add_undef (optarg, TRUE); 1304 break; 1305 case OPTION_REQUIRE_DEFINED_SYMBOL: 1306 ldlang_add_require_defined (optarg); 1307 break; 1308 case OPTION_UNIQUE: 1309 if (optarg != NULL) 1310 lang_add_unique (optarg); 1311 else 1312 config.unique_orphan_sections = TRUE; 1313 break; 1314 case OPTION_VERBOSE: 1315 ldversion (1); 1316 version_printed = TRUE; 1317 verbose = TRUE; 1318 overflow_cutoff_limit = -2; 1319 if (optarg != NULL) 1320 { 1321 char *end; 1322 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1323 if (*end) 1324 einfo (_("%P%F: invalid number `%s'\n"), optarg); 1325#ifdef ENABLE_PLUGINS 1326 report_plugin_symbols = level > 1; 1327#endif /* ENABLE_PLUGINS */ 1328 } 1329 break; 1330 case 'v': 1331 ldversion (0); 1332 version_printed = TRUE; 1333 break; 1334 case 'V': 1335 ldversion (1); 1336 version_printed = TRUE; 1337 break; 1338 case OPTION_VERSION: 1339 ldversion (2); 1340 xexit (0); 1341 break; 1342 case OPTION_VERSION_SCRIPT: 1343 /* This option indicates a small script that only specifies 1344 version information. Read it, but don't assume that 1345 we've seen a linker script. */ 1346 { 1347 FILE *hold_script_handle; 1348 1349 hold_script_handle = saved_script_handle; 1350 ldfile_open_command_file (optarg); 1351 saved_script_handle = hold_script_handle; 1352 parser_input = input_version_script; 1353 yyparse (); 1354 } 1355 break; 1356 case OPTION_VERSION_EXPORTS_SECTION: 1357 /* This option records a version symbol to be applied to the 1358 symbols listed for export to be found in the object files 1359 .exports sections. */ 1360 command_line.version_exports_section = optarg; 1361 break; 1362 case OPTION_DYNAMIC_LIST_DATA: 1363 command_line.dynamic_list = dynamic_list_data; 1364 if (command_line.symbolic == symbolic) 1365 command_line.symbolic = symbolic_unset; 1366 break; 1367 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1368 lang_append_dynamic_list_cpp_typeinfo (); 1369 if (command_line.dynamic_list != dynamic_list_data) 1370 command_line.dynamic_list = dynamic_list; 1371 if (command_line.symbolic == symbolic) 1372 command_line.symbolic = symbolic_unset; 1373 break; 1374 case OPTION_DYNAMIC_LIST_CPP_NEW: 1375 lang_append_dynamic_list_cpp_new (); 1376 if (command_line.dynamic_list != dynamic_list_data) 1377 command_line.dynamic_list = dynamic_list; 1378 if (command_line.symbolic == symbolic) 1379 command_line.symbolic = symbolic_unset; 1380 break; 1381 case OPTION_DYNAMIC_LIST: 1382 /* This option indicates a small script that only specifies 1383 a dynamic list. Read it, but don't assume that we've 1384 seen a linker script. */ 1385 { 1386 FILE *hold_script_handle; 1387 1388 hold_script_handle = saved_script_handle; 1389 ldfile_open_command_file (optarg); 1390 saved_script_handle = hold_script_handle; 1391 parser_input = input_dynamic_list; 1392 yyparse (); 1393 } 1394 if (command_line.dynamic_list != dynamic_list_data) 1395 command_line.dynamic_list = dynamic_list; 1396 if (command_line.symbolic == symbolic) 1397 command_line.symbolic = symbolic_unset; 1398 break; 1399 case OPTION_WARN_COMMON: 1400 config.warn_common = TRUE; 1401 break; 1402 case OPTION_WARN_CONSTRUCTORS: 1403 config.warn_constructors = TRUE; 1404 break; 1405 case OPTION_WARN_FATAL: 1406 config.fatal_warnings = TRUE; 1407 break; 1408 case OPTION_NO_WARN_FATAL: 1409 config.fatal_warnings = FALSE; 1410 break; 1411 case OPTION_WARN_MULTIPLE_GP: 1412 config.warn_multiple_gp = TRUE; 1413 break; 1414 case OPTION_WARN_ONCE: 1415 config.warn_once = TRUE; 1416 break; 1417 case OPTION_WARN_SECTION_ALIGN: 1418 config.warn_section_align = TRUE; 1419 break; 1420 case OPTION_WARN_SHARED_TEXTREL: 1421 link_info.warn_shared_textrel = TRUE; 1422 break; 1423 case OPTION_WARN_ALTERNATE_EM: 1424 link_info.warn_alternate_em = TRUE; 1425 break; 1426 case OPTION_WHOLE_ARCHIVE: 1427 input_flags.whole_archive = TRUE; 1428 break; 1429 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1430 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1431 break; 1432 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1433 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1434 break; 1435 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1436 input_flags.add_DT_NEEDED_for_regular = TRUE; 1437 break; 1438 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1439 input_flags.add_DT_NEEDED_for_regular = FALSE; 1440 break; 1441 case OPTION_WRAP: 1442 add_wrap (optarg); 1443 break; 1444 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1445 add_ignoresym (&link_info, optarg); 1446 break; 1447 case OPTION_DISCARD_NONE: 1448 link_info.discard = discard_none; 1449 break; 1450 case 'X': 1451 link_info.discard = discard_l; 1452 break; 1453 case 'x': 1454 link_info.discard = discard_all; 1455 break; 1456 case 'Y': 1457 if (CONST_STRNEQ (optarg, "P,")) 1458 optarg += 2; 1459 if (default_dirlist != NULL) 1460 free (default_dirlist); 1461 default_dirlist = xstrdup (optarg); 1462 break; 1463 case 'y': 1464 add_ysym (optarg); 1465 break; 1466 case OPTION_SPARE_DYNAMIC_TAGS: 1467 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1468 break; 1469 case OPTION_SPLIT_BY_RELOC: 1470 if (optarg != NULL) 1471 config.split_by_reloc = strtoul (optarg, NULL, 0); 1472 else 1473 config.split_by_reloc = 32768; 1474 break; 1475 case OPTION_SPLIT_BY_FILE: 1476 if (optarg != NULL) 1477 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1478 else 1479 config.split_by_file = 1; 1480 break; 1481 case OPTION_CHECK_SECTIONS: 1482 command_line.check_section_addresses = 1; 1483 break; 1484 case OPTION_NO_CHECK_SECTIONS: 1485 command_line.check_section_addresses = 0; 1486 break; 1487 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1488 command_line.accept_unknown_input_arch = TRUE; 1489 break; 1490 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1491 command_line.accept_unknown_input_arch = FALSE; 1492 break; 1493 case '(': 1494 lang_enter_group (); 1495 ingroup++; 1496 break; 1497 case ')': 1498 if (! ingroup) 1499 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1500 1501 lang_leave_group (); 1502 ingroup--; 1503 break; 1504 1505 case OPTION_INIT: 1506 link_info.init_function = optarg; 1507 break; 1508 1509 case OPTION_FINI: 1510 link_info.fini_function = optarg; 1511 break; 1512 1513 case OPTION_REDUCE_MEMORY_OVERHEADS: 1514 link_info.reduce_memory_overheads = TRUE; 1515 if (config.hash_table_size == 0) 1516 config.hash_table_size = 1021; 1517 break; 1518 1519 case OPTION_HASH_SIZE: 1520 { 1521 bfd_size_type new_size; 1522 1523 new_size = strtoul (optarg, NULL, 0); 1524 if (new_size) 1525 config.hash_table_size = new_size; 1526 else 1527 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1528 } 1529 break; 1530 1531 case OPTION_PUSH_STATE: 1532 input_flags.pushed = xmemdup (&input_flags, 1533 sizeof (input_flags), 1534 sizeof (input_flags)); 1535 break; 1536 1537 case OPTION_POP_STATE: 1538 if (input_flags.pushed == NULL) 1539 einfo (_("%P%F: no state pushed before popping\n")); 1540 else 1541 { 1542 struct lang_input_statement_flags *oldp = input_flags.pushed; 1543 memcpy (&input_flags, oldp, sizeof (input_flags)); 1544 free (oldp); 1545 } 1546 break; 1547 1548 case OPTION_PRINT_MEMORY_USAGE: 1549 command_line.print_memory_usage = TRUE; 1550 break; 1551 1552 case OPTION_ORPHAN_HANDLING: 1553 if (strcasecmp (optarg, "place") == 0) 1554 config.orphan_handling = orphan_handling_place; 1555 else if (strcasecmp (optarg, "warn") == 0) 1556 config.orphan_handling = orphan_handling_warn; 1557 else if (strcasecmp (optarg, "error") == 0) 1558 config.orphan_handling = orphan_handling_error; 1559 else if (strcasecmp (optarg, "discard") == 0) 1560 config.orphan_handling = orphan_handling_discard; 1561 else 1562 einfo (_("%P%F: invalid argument to option" 1563 " \"--orphan-handling\"\n")); 1564 break; 1565 } 1566 } 1567 1568 if (command_line.soname && command_line.soname[0] == '\0') 1569 { 1570 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1571 command_line.soname = NULL; 1572 } 1573 1574 while (ingroup) 1575 { 1576 lang_leave_group (); 1577 ingroup--; 1578 } 1579 1580 if (default_dirlist != NULL) 1581 { 1582 set_default_dirlist (default_dirlist); 1583 free (default_dirlist); 1584 } 1585 1586 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1587 /* FIXME: Should we allow emulations a chance to set this ? */ 1588 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1589 1590 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1591 /* FIXME: Should we allow emulations a chance to set this ? */ 1592 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1593 1594 if (bfd_link_relocatable (&link_info) 1595 && command_line.check_section_addresses < 0) 1596 command_line.check_section_addresses = 0; 1597 1598 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1599 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1600 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1601 for PIC outputs. -Bsymbolic overrides all others and vice versa. */ 1602 switch (command_line.symbolic) 1603 { 1604 case symbolic_unset: 1605 break; 1606 case symbolic: 1607 /* -Bsymbolic is for PIC output only. */ 1608 if (bfd_link_pic (&link_info)) 1609 { 1610 link_info.symbolic = TRUE; 1611 /* Should we free the unused memory? */ 1612 link_info.dynamic_list = NULL; 1613 command_line.dynamic_list = dynamic_list_unset; 1614 } 1615 break; 1616 case symbolic_functions: 1617 /* -Bsymbolic-functions is for PIC output only. */ 1618 if (bfd_link_pic (&link_info)) 1619 command_line.dynamic_list = dynamic_list_data; 1620 break; 1621 } 1622 1623 switch (command_line.dynamic_list) 1624 { 1625 case dynamic_list_unset: 1626 break; 1627 case dynamic_list_data: 1628 link_info.dynamic_data = TRUE; 1629 /* Fall through. */ 1630 case dynamic_list: 1631 link_info.dynamic = TRUE; 1632 break; 1633 } 1634 1635 if (!bfd_link_dll (&link_info)) 1636 { 1637 if (command_line.filter_shlib) 1638 einfo (_("%P%F: -F may not be used without -shared\n")); 1639 if (command_line.auxiliary_filters) 1640 einfo (_("%P%F: -f may not be used without -shared\n")); 1641 } 1642 1643 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1644 don't see how else this can be handled, since in this case we 1645 must preserve all externally visible symbols. */ 1646 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1647 { 1648 link_info.strip = strip_debugger; 1649 if (link_info.discard == discard_sec_merge) 1650 link_info.discard = discard_all; 1651 } 1652} 1653 1654/* Add the (colon-separated) elements of DIRLIST_PTR to the 1655 library search path. */ 1656 1657static void 1658set_default_dirlist (char *dirlist_ptr) 1659{ 1660 char *p; 1661 1662 while (1) 1663 { 1664 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1665 if (p != NULL) 1666 *p = '\0'; 1667 if (*dirlist_ptr != '\0') 1668 ldfile_add_library_path (dirlist_ptr, TRUE); 1669 if (p == NULL) 1670 break; 1671 dirlist_ptr = p + 1; 1672 } 1673} 1674 1675static void 1676set_section_start (char *sect, char *valstr) 1677{ 1678 const char *end; 1679 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1680 if (*end) 1681 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1682 lang_section_start (sect, exp_intop (val), NULL); 1683} 1684 1685static void 1686set_segment_start (const char *section, char *valstr) 1687{ 1688 const char *name; 1689 const char *end; 1690 segment_type *seg; 1691 1692 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1693 if (*end) 1694 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1695 /* If we already have an entry for this segment, update the existing 1696 value. */ 1697 name = section + 1; 1698 for (seg = segments; seg; seg = seg->next) 1699 if (strcmp (seg->name, name) == 0) 1700 { 1701 seg->value = val; 1702 lang_section_start (section, exp_intop (val), seg); 1703 return; 1704 } 1705 /* There was no existing value so we must create a new segment 1706 entry. */ 1707 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1708 seg->name = name; 1709 seg->value = val; 1710 seg->used = FALSE; 1711 /* Add it to the linked list of segments. */ 1712 seg->next = segments; 1713 segments = seg; 1714 /* Historically, -Ttext and friends set the base address of a 1715 particular section. For backwards compatibility, we still do 1716 that. If a SEGMENT_START directive is seen, the section address 1717 assignment will be disabled. */ 1718 lang_section_start (section, exp_intop (val), seg); 1719} 1720 1721static void 1722elf_shlib_list_options (FILE *file) 1723{ 1724 fprintf (file, _("\ 1725 --audit=AUDITLIB Specify a library to use for auditing\n")); 1726 fprintf (file, _("\ 1727 -Bgroup Selects group name lookup rules for DSO\n")); 1728 fprintf (file, _("\ 1729 --disable-new-dtags Disable new dynamic tags\n")); 1730 fprintf (file, _("\ 1731 --enable-new-dtags Enable new dynamic tags\n")); 1732 fprintf (file, _("\ 1733 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1734 fprintf (file, _("\ 1735 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n")); 1736 fprintf (file, _("\ 1737 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1738 fprintf (file, _("\ 1739 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1740 fprintf (file, _("\ 1741 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1742 Specify a library to use for auditing dependencies\n")); 1743 fprintf (file, _("\ 1744 -z combreloc Merge dynamic relocs into one section and sort\n")); 1745 fprintf (file, _("\ 1746 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1747 fprintf (file, _("\ 1748 -z global Make symbols in DSO available for subsequently\n\ 1749 loaded objects\n")); 1750 fprintf (file, _("\ 1751 -z initfirst Mark DSO to be initialized first at runtime\n")); 1752 fprintf (file, _("\ 1753 -z interpose Mark object to interpose all DSOs but executable\n")); 1754 fprintf (file, _("\ 1755 -z lazy Mark object lazy runtime binding (default)\n")); 1756 fprintf (file, _("\ 1757 -z loadfltr Mark object requiring immediate process\n")); 1758 fprintf (file, _("\ 1759 -z nocopyreloc Don't create copy relocs\n")); 1760 fprintf (file, _("\ 1761 -z nodefaultlib Mark object not to use default search paths\n")); 1762 fprintf (file, _("\ 1763 -z nodelete Mark DSO non-deletable at runtime\n")); 1764 fprintf (file, _("\ 1765 -z nodlopen Mark DSO not available to dlopen\n")); 1766 fprintf (file, _("\ 1767 -z nodump Mark DSO not available to dldump\n")); 1768 fprintf (file, _("\ 1769 -z now Mark object non-lazy runtime binding\n")); 1770 fprintf (file, _("\ 1771 -z origin Mark object requiring immediate $ORIGIN\n\ 1772 processing at runtime\n")); 1773#if DEFAULT_LD_Z_RELRO 1774 fprintf (file, _("\ 1775 -z relro Create RELRO program header (default)\n")); 1776 fprintf (file, _("\ 1777 -z norelro Don't create RELRO program header\n")); 1778#else 1779 fprintf (file, _("\ 1780 -z relro Create RELRO program header\n")); 1781 fprintf (file, _("\ 1782 -z norelro Don't create RELRO program header (default)\n")); 1783#endif 1784 fprintf (file, _("\ 1785 -z common Generate common symbols with STT_COMMON type\n")); 1786 fprintf (file, _("\ 1787 -z nocommon Generate common symbols with STT_OBJECT type\n")); 1788 fprintf (file, _("\ 1789 -z stacksize=SIZE Set size of stack segment\n")); 1790 fprintf (file, _("\ 1791 -z text Treat DT_TEXTREL in shared object as error\n")); 1792 fprintf (file, _("\ 1793 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1794 fprintf (file, _("\ 1795 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1796} 1797 1798static void 1799elf_static_list_options (FILE *file) 1800{ 1801 fprintf (file, _("\ 1802 --build-id[=STYLE] Generate build ID note\n")); 1803 fprintf (file, _("\ 1804 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1805 Compress DWARF debug sections using zlib\n")); 1806#ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1807 fprintf (file, _("\ 1808 Default: zlib-gabi\n")); 1809#else 1810 fprintf (file, _("\ 1811 Default: none\n")); 1812#endif 1813 fprintf (file, _("\ 1814 -z common-page-size=SIZE Set common page size to SIZE\n")); 1815 fprintf (file, _("\ 1816 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1817 fprintf (file, _("\ 1818 -z defs Report unresolved symbols in object files.\n")); 1819 fprintf (file, _("\ 1820 -z muldefs Allow multiple definitions\n")); 1821 fprintf (file, _("\ 1822 -z execstack Mark executable as requiring executable stack\n")); 1823 fprintf (file, _("\ 1824 -z noexecstack Mark executable as not requiring executable stack\n")); 1825} 1826 1827static void 1828elf_plt_unwind_list_options (FILE *file) 1829{ 1830 fprintf (file, _("\ 1831 --ld-generated-unwind-info Generate exception handling info for PLT\n\ 1832 --no-ld-generated-unwind-info\n\ 1833 Don't generate exception handling info for PLT\n")); 1834} 1835 1836static void 1837ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1838 bfd_boolean plt_unwind) 1839{ 1840 if (!elf) 1841 return; 1842 printf (_("ELF emulations:\n")); 1843 if (plt_unwind) 1844 elf_plt_unwind_list_options (file); 1845 elf_static_list_options (file); 1846 if (shlib) 1847 elf_shlib_list_options (file); 1848} 1849 1850 1851/* Print help messages for the options. */ 1852 1853static void 1854help (void) 1855{ 1856 unsigned i; 1857 const char **targets, **pp; 1858 int len; 1859 1860 printf (_("Usage: %s [options] file...\n"), program_name); 1861 1862 printf (_("Options:\n")); 1863 for (i = 0; i < OPTION_COUNT; i++) 1864 { 1865 if (ld_options[i].doc != NULL) 1866 { 1867 bfd_boolean comma; 1868 unsigned j; 1869 1870 printf (" "); 1871 1872 comma = FALSE; 1873 len = 2; 1874 1875 j = i; 1876 do 1877 { 1878 if (ld_options[j].shortopt != '\0' 1879 && ld_options[j].control != NO_HELP) 1880 { 1881 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1882 len += (comma ? 2 : 0) + 2; 1883 if (ld_options[j].arg != NULL) 1884 { 1885 if (ld_options[j].opt.has_arg != optional_argument) 1886 { 1887 printf (" "); 1888 ++len; 1889 } 1890 printf ("%s", _(ld_options[j].arg)); 1891 len += strlen (_(ld_options[j].arg)); 1892 } 1893 comma = TRUE; 1894 } 1895 ++j; 1896 } 1897 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1898 1899 j = i; 1900 do 1901 { 1902 if (ld_options[j].opt.name != NULL 1903 && ld_options[j].control != NO_HELP) 1904 { 1905 int two_dashes = 1906 (ld_options[j].control == TWO_DASHES 1907 || ld_options[j].control == EXACTLY_TWO_DASHES); 1908 1909 printf ("%s-%s%s", 1910 comma ? ", " : "", 1911 two_dashes ? "-" : "", 1912 ld_options[j].opt.name); 1913 len += ((comma ? 2 : 0) 1914 + 1 1915 + (two_dashes ? 1 : 0) 1916 + strlen (ld_options[j].opt.name)); 1917 if (ld_options[j].arg != NULL) 1918 { 1919 printf (" %s", _(ld_options[j].arg)); 1920 len += 1 + strlen (_(ld_options[j].arg)); 1921 } 1922 comma = TRUE; 1923 } 1924 ++j; 1925 } 1926 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1927 1928 if (len >= 30) 1929 { 1930 printf ("\n"); 1931 len = 0; 1932 } 1933 1934 for (; len < 30; len++) 1935 putchar (' '); 1936 1937 printf ("%s\n", _(ld_options[i].doc)); 1938 } 1939 } 1940 printf (_(" @FILE")); 1941 for (len = strlen (" @FILE"); len < 30; len++) 1942 putchar (' '); 1943 printf (_("Read options from FILE\n")); 1944 1945 /* Note: Various tools (such as libtool) depend upon the 1946 format of the listings below - do not change them. */ 1947 /* xgettext:c-format */ 1948 printf (_("%s: supported targets:"), program_name); 1949 targets = bfd_target_list (); 1950 for (pp = targets; *pp != NULL; pp++) 1951 printf (" %s", *pp); 1952 free (targets); 1953 printf ("\n"); 1954 1955 /* xgettext:c-format */ 1956 printf (_("%s: supported emulations: "), program_name); 1957 ldemul_list_emulations (stdout); 1958 printf ("\n"); 1959 1960 /* xgettext:c-format */ 1961 printf (_("%s: emulation specific options:\n"), program_name); 1962 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 1963 ELF_PLT_UNWIND_LIST_OPTIONS); 1964 ldemul_list_emulation_options (stdout); 1965 printf ("\n"); 1966 1967 if (REPORT_BUGS_TO[0]) 1968 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1969} 1970