1/* Parse options for the GNU linker. 2 Copyright (C) 1991-2020 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 "ctf-api.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#if BFD_SUPPORTS_PLUGINS 43#include "plugin.h" 44#endif /* BFD_SUPPORTS_PLUGINS */ 45 46#ifndef PATH_SEPARATOR 47#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 48#define PATH_SEPARATOR ';' 49#else 50#define PATH_SEPARATOR ':' 51#endif 52#endif 53 54/* Somewhere above, sys/stat.h got included . . . . */ 55#if !defined(S_ISDIR) && defined(S_IFDIR) 56#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 57#endif 58 59static void set_default_dirlist (char *); 60static void set_section_start (char *, char *); 61static void set_segment_start (const char *, char *); 62static void help (void); 63 64/* The long options. This structure is used for both the option 65 parsing and the help text. */ 66 67enum control_enum { 68 /* Use one dash before long option name. */ 69 ONE_DASH = 1, 70 /* Use two dashes before long option name. */ 71 TWO_DASHES = 2, 72 /* Only accept two dashes before the long option name. 73 This is an overloading of the use of this enum, since originally it 74 was only intended to tell the --help display function how to display 75 the long option name. This feature was added in order to resolve 76 the confusion about the -omagic command line switch. Is it setting 77 the output file name to "magic" or is it setting the NMAGIC flag on 78 the output ? It has been decided that it is setting the output file 79 name, and that if you want to set the NMAGIC flag you should use -N 80 or --omagic. */ 81 EXACTLY_TWO_DASHES, 82 /* Don't mention this option in --help output. */ 83 NO_HELP 84}; 85 86struct ld_option 87{ 88 /* The long option information. */ 89 struct option opt; 90 /* The short option with the same meaning ('\0' if none). */ 91 char shortopt; 92 /* The name of the argument (NULL if none). */ 93 const char *arg; 94 /* The documentation string. If this is NULL, this is a synonym for 95 the previous option. */ 96 const char *doc; 97 enum control_enum control; 98}; 99 100static const struct ld_option ld_options[] = 101{ 102 { {NULL, required_argument, NULL, '\0'}, 103 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 104 ONE_DASH }, 105 { {"architecture", required_argument, NULL, 'A'}, 106 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 107 { {"format", required_argument, NULL, 'b'}, 108 'b', N_("TARGET"), N_("Specify target for following input files"), 109 TWO_DASHES }, 110 { {"mri-script", required_argument, NULL, 'c'}, 111 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 112 { {"dc", no_argument, NULL, 'd'}, 113 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 114 { {"dp", no_argument, NULL, 'd'}, 115 '\0', NULL, NULL, ONE_DASH }, 116 { {"dependency-file", required_argument, NULL, OPTION_DEPENDENCY_FILE}, 117 '\0', N_("FILE"), N_("Write dependency file"), TWO_DASHES }, 118 { {"force-group-allocation", no_argument, NULL, 119 OPTION_FORCE_GROUP_ALLOCATION}, 120 '\0', NULL, N_("Force group members out of groups"), TWO_DASHES }, 121 { {"entry", required_argument, NULL, 'e'}, 122 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 123 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 124 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 125 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC}, 126 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES }, 127 { {"enable-non-contiguous-regions", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS}, 128 '\0', NULL, N_("Enable support of non-contiguous memory regions"), TWO_DASHES }, 129 { {"enable-non-contiguous-regions-warnings", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS}, 130 '\0', NULL, N_("Enable warnings when --enable-non-contiguous-regions may cause unexpected behaviour"), TWO_DASHES }, 131 { {"EB", no_argument, NULL, OPTION_EB}, 132 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 133 { {"EL", no_argument, NULL, OPTION_EL}, 134 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 135 { {"auxiliary", required_argument, NULL, 'f'}, 136 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 137 TWO_DASHES }, 138 { {"filter", required_argument, NULL, 'F'}, 139 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 140 TWO_DASHES }, 141 { {NULL, no_argument, NULL, '\0'}, 142 'g', NULL, N_("Ignored"), ONE_DASH }, 143 { {"gpsize", required_argument, NULL, 'G'}, 144 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 145 TWO_DASHES }, 146 { {"soname", required_argument, NULL, OPTION_SONAME}, 147 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 148 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 149 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 150 TWO_DASHES }, 151 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER}, 152 '\0', NULL, N_("Produce an executable with no program interpreter header"), 153 TWO_DASHES }, 154 { {"library", required_argument, NULL, 'l'}, 155 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 156 { {"library-path", required_argument, NULL, 'L'}, 157 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 158 TWO_DASHES }, 159 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 160 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 161 { {NULL, required_argument, NULL, '\0'}, 162 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 163 { {"print-map", no_argument, NULL, 'M'}, 164 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 165 { {"nmagic", no_argument, NULL, 'n'}, 166 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 167 { {"omagic", no_argument, NULL, 'N'}, 168 'N', NULL, N_("Do not page align data, do not make text readonly"), 169 EXACTLY_TWO_DASHES }, 170 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 171 '\0', NULL, N_("Page align data, make text readonly"), 172 EXACTLY_TWO_DASHES }, 173 { {"output", required_argument, NULL, 'o'}, 174 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 175 { {NULL, required_argument, NULL, '\0'}, 176 'O', NULL, N_("Optimize output file"), ONE_DASH }, 177 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB}, 178 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES }, 179#if BFD_SUPPORTS_PLUGINS 180 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 181 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 182 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 183 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 184 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 185 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 186 ONE_DASH }, 187 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 188 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 189 ONE_DASH }, 190#else 191 { {"plugin", required_argument, NULL, OPTION_IGNORE}, 192 '\0', N_("PLUGIN"), N_("Load named plugin (ignored)"), ONE_DASH }, 193 { {"plugin-opt", required_argument, NULL, OPTION_IGNORE}, 194 '\0', N_("ARG"), N_("Send arg to last-loaded plugin (ignored)"), ONE_DASH }, 195#endif /* BFD_SUPPORTS_PLUGINS */ 196 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 197 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 198 ONE_DASH }, 199 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 200 '\0', NULL, N_("Ignored for gold option compatibility"), 201 TWO_DASHES }, 202 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 203 '\0', NULL, N_("Ignored for gold option compatibility"), 204 TWO_DASHES }, 205 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 206 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 207 { {"emit-relocs", no_argument, NULL, 'q'}, 208 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 209 { {"relocatable", no_argument, NULL, 'r'}, 210 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 211 { {NULL, no_argument, NULL, '\0'}, 212 'i', NULL, NULL, ONE_DASH }, 213 { {"just-symbols", required_argument, NULL, 'R'}, 214 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 215 TWO_DASHES }, 216 { {"strip-all", no_argument, NULL, 's'}, 217 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 218 { {"strip-debug", no_argument, NULL, 'S'}, 219 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 220 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 221 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 222 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 223 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 224 { {"trace", no_argument, NULL, 't'}, 225 't', NULL, N_("Trace file opens"), TWO_DASHES }, 226 { {"script", required_argument, NULL, 'T'}, 227 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 228 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 229 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 230 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 231 '\0', NULL, NULL, ONE_DASH }, 232 { {"undefined", required_argument, NULL, 'u'}, 233 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 234 TWO_DASHES }, 235 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, 236 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), 237 TWO_DASHES }, 238 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 239 '\0', N_("[=SECTION]"), 240 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 241 { {"Ur", no_argument, NULL, OPTION_UR}, 242 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 243 { {"version", no_argument, NULL, OPTION_VERSION}, 244 'v', NULL, N_("Print version information"), TWO_DASHES }, 245 { {NULL, no_argument, NULL, '\0'}, 246 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 247 { {"discard-all", no_argument, NULL, 'x'}, 248 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 249 { {"discard-locals", no_argument, NULL, 'X'}, 250 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 251 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 252 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 253 { {"trace-symbol", required_argument, NULL, 'y'}, 254 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 255 { {NULL, required_argument, NULL, '\0'}, 256 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 257 ONE_DASH }, 258 { {"start-group", no_argument, NULL, '('}, 259 '(', NULL, N_("Start a group"), TWO_DASHES }, 260 { {"end-group", no_argument, NULL, ')'}, 261 ')', NULL, N_("End a group"), TWO_DASHES }, 262 { {"accept-unknown-input-arch", no_argument, NULL, 263 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 264 '\0', NULL, 265 N_("Accept input files whose architecture cannot be determined"), 266 TWO_DASHES }, 267 { {"no-accept-unknown-input-arch", no_argument, NULL, 268 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 269 '\0', NULL, N_("Reject input files whose architecture is unknown"), 270 TWO_DASHES }, 271 272 /* The next two options are deprecated because of their similarity to 273 --as-needed and --no-as-needed. They have been replaced by 274 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 275 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 276 '\0', NULL, NULL, NO_HELP }, 277 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 278 '\0', NULL, NULL, NO_HELP }, 279 280 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 281 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 282 TWO_DASHES }, 283 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 284 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 285 " the command line"), 286 TWO_DASHES }, 287 { {"assert", required_argument, NULL, OPTION_ASSERT}, 288 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 289 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 290 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 291 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 292 '\0', NULL, NULL, ONE_DASH }, 293 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 294 '\0', NULL, NULL, ONE_DASH }, 295 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 296 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 297 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 298 '\0', NULL, NULL, ONE_DASH }, 299 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 300 '\0', NULL, NULL, ONE_DASH }, 301 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 302 '\0', NULL, NULL, ONE_DASH }, 303 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 304 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 305 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 306 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 307 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 308 '\0', NULL, N_("Check section addresses for overlaps (default)"), 309 TWO_DASHES }, 310 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 311 '\0', NULL, N_("Do not check section addresses for overlaps"), 312 TWO_DASHES }, 313 { {"copy-dt-needed-entries", no_argument, NULL, 314 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 315 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 316 TWO_DASHES }, 317 { {"no-copy-dt-needed-entries", no_argument, NULL, 318 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 319 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 320 TWO_DASHES }, 321 322 { {"cref", no_argument, NULL, OPTION_CREF}, 323 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 324 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 325 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 326 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 327 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 328 TWO_DASHES }, 329 { {"disable-multiple-abs-defs", no_argument, NULL, 330 OPTION_DISABLE_MULTIPLE_DEFS_ABS}, 331 '\0', NULL, N_("Do not allow multiple definitions with symbols included\n" 332 " in filename invoked by -R or --just-symbols"), 333 TWO_DASHES}, 334 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 335 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 336 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 337 '\0', NULL, N_("Treat warnings as errors"), 338 TWO_DASHES }, 339 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 340 '\0', NULL, N_("Do not treat warnings as errors (default)"), 341 TWO_DASHES }, 342 { {"fini", required_argument, NULL, OPTION_FINI}, 343 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 344 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 345 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 346 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 347 '\0', NULL, N_("Remove unused sections (on some targets)"), 348 TWO_DASHES }, 349 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 350 '\0', NULL, N_("Don't remove unused sections (default)"), 351 TWO_DASHES }, 352 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 353 '\0', NULL, N_("List removed unused sections on stderr"), 354 TWO_DASHES }, 355 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 356 '\0', NULL, N_("Do not list removed unused sections"), 357 TWO_DASHES }, 358 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED}, 359 '\0', NULL, N_("Keep exported symbols when removing unused sections"), 360 TWO_DASHES }, 361 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 362 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 363 TWO_DASHES }, 364 { {"help", no_argument, NULL, OPTION_HELP}, 365 '\0', NULL, N_("Print option help"), TWO_DASHES }, 366 { {"init", required_argument, NULL, OPTION_INIT}, 367 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 368 { {"Map", required_argument, NULL, OPTION_MAP}, 369 '\0', N_("FILE/DIR"), N_("Write a linker map to FILE or DIR/<outputname>.map"), ONE_DASH }, 370 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 371 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 372 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 373 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 374 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 375 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 376 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 377 '\0', NULL, N_("Do not allow unresolved references in object files"), 378 TWO_DASHES }, 379 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 380 '\0', NULL, N_("Allow unresolved references in shared libraries"), 381 TWO_DASHES }, 382 { {"no-allow-shlib-undefined", no_argument, NULL, 383 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 384 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 385 TWO_DASHES }, 386 { {"allow-multiple-definition", no_argument, NULL, 387 OPTION_ALLOW_MULTIPLE_DEFINITION}, 388 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 389 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 390 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 391 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 392 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 393 { {"default-imported-symver", no_argument, NULL, 394 OPTION_DEFAULT_IMPORTED_SYMVER}, 395 '\0', NULL, N_("Create default symbol version for imported symbols"), 396 TWO_DASHES }, 397 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 398 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 399 { {"no-warn-search-mismatch", no_argument, NULL, 400 OPTION_NO_WARN_SEARCH_MISMATCH}, 401 '\0', NULL, N_("Don't warn on finding an incompatible library"), 402 TWO_DASHES}, 403 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 404 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 405 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 406 '\0', NULL, N_("Create an output file even if errors occur"), 407 TWO_DASHES }, 408 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 409 '\0', NULL, NULL, NO_HELP }, 410 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 411 '\0', NULL, N_("Only use library directories specified on\n" 412 " the command line"), 413 ONE_DASH }, 414 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 415 '\0', N_("TARGET"), N_("Specify target of output file"), 416 EXACTLY_TWO_DASHES }, 417 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 418 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 419 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 420 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 421 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 422 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 423 { {"reduce-memory-overheads", no_argument, NULL, 424 OPTION_REDUCE_MEMORY_OVERHEADS}, 425 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 426 TWO_DASHES }, 427 { {"relax", no_argument, NULL, OPTION_RELAX}, 428 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 429 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 430 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 431 { {"retain-symbols-file", required_argument, NULL, 432 OPTION_RETAIN_SYMBOLS_FILE}, 433 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 434 { {"rpath", required_argument, NULL, OPTION_RPATH}, 435 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 436 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 437 '\0', N_("PATH"), N_("Set link time shared library search path"), 438 ONE_DASH }, 439 { {"shared", no_argument, NULL, OPTION_SHARED}, 440 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 441 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 442 '\0', NULL, NULL, ONE_DASH }, 443 { {"pie", no_argument, NULL, OPTION_PIE}, 444 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 445 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 446 '\0', NULL, NULL, TWO_DASHES }, 447 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 448 '\0', N_("[=ascending|descending]"), 449 N_("Sort common symbols by alignment [in specified order]"), 450 TWO_DASHES }, 451 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 452 '\0', NULL, NULL, NO_HELP }, 453 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 454 '\0', N_("name|alignment"), 455 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 456 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 457 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 458 TWO_DASHES }, 459 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 460 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 461 TWO_DASHES }, 462 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 463 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 464 TWO_DASHES }, 465 { {"stats", no_argument, NULL, OPTION_STATS}, 466 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 467 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 468 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 469 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 470 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 471 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 472 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 473 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 474 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 475 TWO_DASHES }, 476 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 477 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 478 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 479 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 480 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 481 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 482 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 483 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 484 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 485 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 486 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 487 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 488 { {"unresolved-symbols=<method>", required_argument, NULL, 489 OPTION_UNRESOLVED_SYMBOLS}, 490 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 491 " ignore-all, report-all, ignore-in-object-files,\n" 492 " ignore-in-shared-libs"), 493 TWO_DASHES }, 494 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 495 '\0', N_("[=NUMBER]"), 496 N_("Output lots of information during link"), TWO_DASHES }, 497 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 498 '\0', NULL, NULL, NO_HELP }, 499 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 500 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 501 { {"version-exports-section", required_argument, NULL, 502 OPTION_VERSION_EXPORTS_SECTION }, 503 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 504 " SYMBOL as the version."), 505 TWO_DASHES }, 506 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 507 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 508 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 509 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 510 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 511 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 512 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 513 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 514 { {"export-dynamic-symbol", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL}, 515 '\0', N_("SYMBOL"), N_("Export the specified symbol"), EXACTLY_TWO_DASHES }, 516 { {"export-dynamic-symbol-list", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL_LIST}, 517 '\0', N_("FILE"), N_("Read export dynamic symbol list"), EXACTLY_TWO_DASHES }, 518 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 519 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 520 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 521 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 522 TWO_DASHES }, 523 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 524 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 525 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 526 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 527 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 528 '\0', NULL, N_("Warn if start of section changes due to alignment"), 529 TWO_DASHES }, 530 { {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL}, 531 '\0', NULL, 532#if DEFAULT_LD_TEXTREL_CHECK_WARNING 533 N_("Warn if output has DT_TEXTREL (default)"), 534#else 535 N_("Warn if output has DT_TEXTREL"), 536#endif 537 TWO_DASHES }, 538 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_TEXTREL}, 539 '\0', NULL, NULL, NO_HELP }, 540 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 541 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 542 TWO_DASHES }, 543 { {"warn-unresolved-symbols", no_argument, NULL, 544 OPTION_WARN_UNRESOLVED_SYMBOLS}, 545 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 546 { {"error-unresolved-symbols", no_argument, NULL, 547 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 548 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 549 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 550 '\0', NULL, N_("Include all objects from following archives"), 551 TWO_DASHES }, 552 { {"wrap", required_argument, NULL, OPTION_WRAP}, 553 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 554 { {"ignore-unresolved-symbol", required_argument, NULL, 555 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 556 '\0', N_("SYMBOL"), 557 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 558 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 559 '\0', NULL, N_("Push state of flags governing input file handling"), 560 TWO_DASHES }, 561 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 562 '\0', NULL, N_("Pop state of flags governing input file handling"), 563 TWO_DASHES }, 564 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 565 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 566 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 567 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 568 TWO_DASHES }, 569 { {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED}, 570 '\0', NULL, N_("Show discarded sections in map file output (default)"), 571 TWO_DASHES }, 572 { {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED}, 573 '\0', NULL, N_("Do not show discarded sections in map file output"), 574 TWO_DASHES }, 575 { {"ctf-variables", no_argument, NULL, OPTION_CTF_VARIABLES}, 576 '\0', NULL, N_("Emit names and types of static variables in CTF"), 577 TWO_DASHES }, 578 { {"no-ctf-variables", no_argument, NULL, OPTION_NO_CTF_VARIABLES}, 579 '\0', NULL, N_("Do not emit names and types of static variables in CTF"), 580 TWO_DASHES }, 581 { {"ctf-share-types=<method>", required_argument, NULL, 582 OPTION_CTF_SHARE_TYPES}, 583 '\0', NULL, N_("How to share CTF types between translation units.\n" 584 " <method> is: share-unconflicted (default),\n" 585 " share-duplicated"), 586 TWO_DASHES }, 587}; 588 589#define OPTION_COUNT ARRAY_SIZE (ld_options) 590 591void 592parse_args (unsigned argc, char **argv) 593{ 594 unsigned i; 595 int is, il, irl; 596 int ingroup = 0; 597 char *default_dirlist = NULL; 598 char *shortopts; 599 struct option *longopts; 600 struct option *really_longopts; 601 int last_optind; 602 enum symbolic_enum 603 { 604 symbolic_unset = 0, 605 symbolic, 606 symbolic_functions, 607 } opt_symbolic = symbolic_unset; 608 enum dynamic_list_enum 609 { 610 dynamic_list_unset = 0, 611 dynamic_list_data, 612 dynamic_list 613 } opt_dynamic_list = dynamic_list_unset; 614 struct bfd_elf_dynamic_list *export_list = NULL; 615 616 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 617 longopts = (struct option *) 618 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 619 really_longopts = (struct option *) 620 xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 621 622 /* Starting the short option string with '-' is for programs that 623 expect options and other ARGV-elements in any order and that care about 624 the ordering of the two. We describe each non-option ARGV-element 625 as if it were the argument of an option with character code 1. */ 626 shortopts[0] = '-'; 627 is = 1; 628 il = 0; 629 irl = 0; 630 for (i = 0; i < OPTION_COUNT; i++) 631 { 632 if (ld_options[i].shortopt != '\0') 633 { 634 shortopts[is] = ld_options[i].shortopt; 635 ++is; 636 if (ld_options[i].opt.has_arg == required_argument 637 || ld_options[i].opt.has_arg == optional_argument) 638 { 639 shortopts[is] = ':'; 640 ++is; 641 if (ld_options[i].opt.has_arg == optional_argument) 642 { 643 shortopts[is] = ':'; 644 ++is; 645 } 646 } 647 } 648 if (ld_options[i].opt.name != NULL) 649 { 650 if (ld_options[i].control == EXACTLY_TWO_DASHES) 651 { 652 really_longopts[irl] = ld_options[i].opt; 653 ++irl; 654 } 655 else 656 { 657 longopts[il] = ld_options[i].opt; 658 ++il; 659 } 660 } 661 } 662 shortopts[is] = '\0'; 663 longopts[il].name = NULL; 664 really_longopts[irl].name = NULL; 665 666 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 667 668 /* The -G option is ambiguous on different platforms. Sometimes it 669 specifies the largest data size to put into the small data 670 section. Sometimes it is equivalent to --shared. Unfortunately, 671 the first form takes an argument, while the second does not. 672 673 We need to permit the --shared form because on some platforms, 674 such as Solaris, gcc -shared will pass -G to the linker. 675 676 To permit either usage, we look through the argument list. If we 677 find -G not followed by a number, we change it into --shared. 678 This will work for most normal cases. */ 679 for (i = 1; i < argc; i++) 680 if (strcmp (argv[i], "-G") == 0 681 && (i + 1 >= argc 682 || ! ISDIGIT (argv[i + 1][0]))) 683 argv[i] = (char *) "--shared"; 684 685 /* Because we permit long options to start with a single dash, and 686 we have a --library option, and the -l option is conventionally 687 used with an immediately following argument, we can have bad 688 results if somebody tries to use -l with a library whose name 689 happens to start with "ibrary", as in -li. We avoid problems by 690 simply turning -l into --library. This means that users will 691 have to use two dashes in order to use --library, which is OK 692 since that's how it is documented. 693 694 FIXME: It's possible that this problem can arise for other short 695 options as well, although the user does always have the recourse 696 of adding a space between the option and the argument. */ 697 for (i = 1; i < argc; i++) 698 { 699 if (argv[i][0] == '-' 700 && argv[i][1] == 'l' 701 && argv[i][2] != '\0') 702 { 703 char *n; 704 705 n = (char *) xmalloc (strlen (argv[i]) + 20); 706 sprintf (n, "--library=%s", argv[i] + 2); 707 argv[i] = n; 708 } 709 } 710 711 last_optind = -1; 712 while (1) 713 { 714 int longind; 715 int optc; 716 static unsigned int defsym_count; 717 718 /* Using last_optind lets us avoid calling ldemul_parse_args 719 multiple times on a single option, which would lead to 720 confusion in the internal static variables maintained by 721 getopt. This could otherwise happen for an argument like 722 -nx, in which the -n is parsed as a single option, and we 723 loop around to pick up the -x. */ 724 if (optind != last_optind) 725 if (ldemul_parse_args (argc, argv)) 726 continue; 727 728 /* getopt_long_only is like getopt_long, but '-' as well as '--' 729 can indicate a long option. */ 730 opterr = 0; 731 last_optind = optind; 732 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 733 if (optc == '?') 734 { 735 optind = last_optind; 736 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 737 } 738 739 if (ldemul_handle_option (optc)) 740 continue; 741 742 if (optc == -1) 743 break; 744 745 switch (optc) 746 { 747 case '?': 748 { 749 /* If the last word on the command line is an option that 750 requires an argument, getopt will refuse to recognise it. 751 Try to catch such options here and issue a more helpful 752 error message than just "unrecognized option". */ 753 int opt; 754 755 for (opt = ARRAY_SIZE (ld_options); opt--;) 756 if (ld_options[opt].opt.has_arg == required_argument 757 /* FIXME: There are a few short options that do not 758 have long equivalents, but which require arguments. 759 We should handle them too. */ 760 && ld_options[opt].opt.name != NULL 761 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 762 { 763 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 764 break; 765 } 766 767 if (opt == -1) 768 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 769 } 770 /* Fall through. */ 771 772 default: 773 einfo (_("%F%P: use the --help option for usage information\n")); 774 break; 775 776 case 1: /* File name. */ 777 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 778 break; 779 780 case OPTION_IGNORE: 781 break; 782 case 'a': 783 /* For HP/UX compatibility. Actually -a shared should mean 784 ``use only shared libraries'' but, then, we don't 785 currently support shared libraries on HP/UX anyhow. */ 786 if (strcmp (optarg, "archive") == 0) 787 input_flags.dynamic = FALSE; 788 else if (strcmp (optarg, "shared") == 0 789 || strcmp (optarg, "default") == 0) 790 input_flags.dynamic = TRUE; 791 else 792 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg); 793 break; 794 case OPTION_ASSERT: 795 /* FIXME: We just ignore these, but we should handle them. */ 796 if (strcmp (optarg, "definitions") == 0) 797 ; 798 else if (strcmp (optarg, "nodefinitions") == 0) 799 ; 800 else if (strcmp (optarg, "nosymbolic") == 0) 801 ; 802 else if (strcmp (optarg, "pure-text") == 0) 803 ; 804 else 805 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg); 806 break; 807 case 'A': 808 ldfile_add_arch (optarg); 809 break; 810 case 'b': 811 lang_add_target (optarg); 812 break; 813 case 'c': 814 ldfile_open_command_file (optarg); 815 parser_input = input_mri_script; 816 yyparse (); 817 break; 818 case OPTION_CALL_SHARED: 819 input_flags.dynamic = TRUE; 820 break; 821 case OPTION_NON_SHARED: 822 input_flags.dynamic = FALSE; 823 break; 824 case OPTION_CREF: 825 command_line.cref = TRUE; 826 link_info.notice_all = TRUE; 827 break; 828 case 'd': 829 command_line.force_common_definition = TRUE; 830 break; 831 case OPTION_FORCE_GROUP_ALLOCATION: 832 command_line.force_group_allocation = TRUE; 833 break; 834 case OPTION_DEFSYM: 835 lex_string = optarg; 836 lex_redirect (optarg, "--defsym", ++defsym_count); 837 parser_input = input_defsym; 838 yyparse (); 839 lex_string = NULL; 840 break; 841 case OPTION_DEMANGLE: 842 demangling = TRUE; 843 if (optarg != NULL) 844 { 845 enum demangling_styles style; 846 847 style = cplus_demangle_name_to_style (optarg); 848 if (style == unknown_demangling) 849 einfo (_("%F%P: unknown demangling style `%s'\n"), 850 optarg); 851 852 cplus_demangle_set_style (style); 853 } 854 break; 855 case 'I': /* Used on Solaris. */ 856 case OPTION_DYNAMIC_LINKER: 857 command_line.interpreter = optarg; 858 link_info.nointerp = 0; 859 break; 860 case OPTION_NO_DYNAMIC_LINKER: 861 link_info.nointerp = 1; 862 break; 863 case OPTION_SYSROOT: 864 /* Already handled in ldmain.c. */ 865 break; 866 case OPTION_EB: 867 command_line.endian = ENDIAN_BIG; 868 break; 869 case OPTION_EL: 870 command_line.endian = ENDIAN_LITTLE; 871 break; 872 case OPTION_EMBEDDED_RELOCS: 873 command_line.embedded_relocs = TRUE; 874 break; 875 case OPTION_EXPORT_DYNAMIC: 876 case 'E': /* HP/UX compatibility. */ 877 link_info.export_dynamic = TRUE; 878 break; 879 case OPTION_NO_EXPORT_DYNAMIC: 880 link_info.export_dynamic = FALSE; 881 break; 882 case OPTION_NON_CONTIGUOUS_REGIONS: 883 link_info.non_contiguous_regions = TRUE; 884 break; 885 case OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS: 886 link_info.non_contiguous_regions_warnings = TRUE; 887 break; 888 case 'e': 889 lang_add_entry (optarg, TRUE); 890 break; 891 case 'f': 892 if (command_line.auxiliary_filters == NULL) 893 { 894 command_line.auxiliary_filters = (char **) 895 xmalloc (2 * sizeof (char *)); 896 command_line.auxiliary_filters[0] = optarg; 897 command_line.auxiliary_filters[1] = NULL; 898 } 899 else 900 { 901 int c; 902 char **p; 903 904 c = 0; 905 for (p = command_line.auxiliary_filters; *p != NULL; p++) 906 ++c; 907 command_line.auxiliary_filters = (char **) 908 xrealloc (command_line.auxiliary_filters, 909 (c + 2) * sizeof (char *)); 910 command_line.auxiliary_filters[c] = optarg; 911 command_line.auxiliary_filters[c + 1] = NULL; 912 } 913 break; 914 case 'F': 915 command_line.filter_shlib = optarg; 916 break; 917 case OPTION_FORCE_EXE_SUFFIX: 918 command_line.force_exe_suffix = TRUE; 919 break; 920 case 'G': 921 { 922 char *end; 923 g_switch_value = strtoul (optarg, &end, 0); 924 if (*end) 925 einfo (_("%F%P: invalid number `%s'\n"), optarg); 926 } 927 break; 928 case 'g': 929 /* Ignore. */ 930 break; 931 case OPTION_GC_SECTIONS: 932 link_info.gc_sections = TRUE; 933 break; 934 case OPTION_PRINT_GC_SECTIONS: 935 link_info.print_gc_sections = TRUE; 936 break; 937 case OPTION_GC_KEEP_EXPORTED: 938 link_info.gc_keep_exported = TRUE; 939 break; 940 case OPTION_HELP: 941 help (); 942 xexit (0); 943 break; 944 case 'L': 945 ldfile_add_library_path (optarg, TRUE); 946 break; 947 case 'l': 948 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 949 break; 950 case 'M': 951 config.map_filename = "-"; 952 break; 953 case 'm': 954 /* Ignore. Was handled in a pre-parse. */ 955 break; 956 case OPTION_MAP: 957 config.map_filename = optarg; 958 break; 959 case 'N': 960 config.text_read_only = FALSE; 961 config.magic_demand_paged = FALSE; 962 input_flags.dynamic = FALSE; 963 break; 964 case OPTION_NO_OMAGIC: 965 config.text_read_only = TRUE; 966 config.magic_demand_paged = TRUE; 967 /* NB/ Does not set input_flags.dynamic to TRUE. 968 Use --call-shared or -Bdynamic for this. */ 969 break; 970 case 'n': 971 config.text_read_only = TRUE; 972 config.magic_demand_paged = FALSE; 973 input_flags.dynamic = FALSE; 974 break; 975 case OPTION_NO_DEFINE_COMMON: 976 link_info.inhibit_common_definition = TRUE; 977 break; 978 case OPTION_NO_DEMANGLE: 979 demangling = FALSE; 980 break; 981 case OPTION_NO_GC_SECTIONS: 982 link_info.gc_sections = FALSE; 983 break; 984 case OPTION_NO_PRINT_GC_SECTIONS: 985 link_info.print_gc_sections = FALSE; 986 break; 987 case OPTION_NO_KEEP_MEMORY: 988 link_info.keep_memory = FALSE; 989 break; 990 case OPTION_NO_UNDEFINED: 991 link_info.unresolved_syms_in_objects = RM_DIAGNOSE; 992 break; 993 case OPTION_ALLOW_SHLIB_UNDEFINED: 994 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 995 break; 996 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 997 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE; 998 break; 999 case OPTION_UNRESOLVED_SYMBOLS: 1000 if (strcmp (optarg, "ignore-all") == 0) 1001 { 1002 link_info.unresolved_syms_in_objects = RM_IGNORE; 1003 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1004 } 1005 else if (strcmp (optarg, "report-all") == 0) 1006 { 1007 link_info.unresolved_syms_in_objects = RM_DIAGNOSE; 1008 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE; 1009 } 1010 else if (strcmp (optarg, "ignore-in-object-files") == 0) 1011 { 1012 link_info.unresolved_syms_in_objects = RM_IGNORE; 1013 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE; 1014 } 1015 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 1016 { 1017 link_info.unresolved_syms_in_objects = RM_DIAGNOSE; 1018 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1019 } 1020 else 1021 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg); 1022 break; 1023 case OPTION_WARN_UNRESOLVED_SYMBOLS: 1024 link_info.warn_unresolved_syms = TRUE; 1025 break; 1026 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 1027 link_info.warn_unresolved_syms = FALSE; 1028 break; 1029 case OPTION_ALLOW_MULTIPLE_DEFINITION: 1030 link_info.allow_multiple_definition = TRUE; 1031 break; 1032 case OPTION_NO_UNDEFINED_VERSION: 1033 link_info.allow_undefined_version = FALSE; 1034 break; 1035 case OPTION_DEFAULT_SYMVER: 1036 link_info.create_default_symver = TRUE; 1037 break; 1038 case OPTION_DEFAULT_IMPORTED_SYMVER: 1039 link_info.default_imported_symver = TRUE; 1040 break; 1041 case OPTION_NO_WARN_MISMATCH: 1042 command_line.warn_mismatch = FALSE; 1043 break; 1044 case OPTION_NO_WARN_SEARCH_MISMATCH: 1045 command_line.warn_search_mismatch = FALSE; 1046 break; 1047 case OPTION_NOINHIBIT_EXEC: 1048 force_make_executable = TRUE; 1049 break; 1050 case OPTION_NOSTDLIB: 1051 config.only_cmd_line_lib_dirs = TRUE; 1052 break; 1053 case OPTION_NO_WHOLE_ARCHIVE: 1054 input_flags.whole_archive = FALSE; 1055 break; 1056 case 'O': 1057 /* FIXME "-O<non-digits> <value>" used to set the address of 1058 section <non-digits>. Was this for compatibility with 1059 something, or can we create a new option to do that 1060 (with a syntax similar to -defsym)? 1061 getopt can't handle two args to an option without kludges. */ 1062 1063 /* Enable optimizations of output files. */ 1064 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1065 break; 1066 case 'o': 1067 lang_add_output (optarg, 0); 1068 break; 1069 case OPTION_OFORMAT: 1070 lang_add_output_format (optarg, NULL, NULL, 0); 1071 break; 1072 case OPTION_OUT_IMPLIB: 1073 command_line.out_implib_filename = xstrdup (optarg); 1074 break; 1075 case OPTION_PRINT_SYSROOT: 1076 if (*ld_sysroot) 1077 puts (ld_sysroot); 1078 xexit (0); 1079 break; 1080 case OPTION_PRINT_OUTPUT_FORMAT: 1081 command_line.print_output_format = TRUE; 1082 break; 1083#if BFD_SUPPORTS_PLUGINS 1084 case OPTION_PLUGIN: 1085 plugin_opt_plugin (optarg); 1086 break; 1087 case OPTION_PLUGIN_OPT: 1088 if (plugin_opt_plugin_arg (optarg)) 1089 einfo (_("%F%P: bad -plugin-opt option\n")); 1090 break; 1091#endif /* BFD_SUPPORTS_PLUGINS */ 1092 case 'q': 1093 link_info.emitrelocations = TRUE; 1094 break; 1095 case 'i': 1096 case 'r': 1097 if (optind == last_optind) 1098 /* This can happen if the user put "-rpath,a" on the command 1099 line. (Or something similar. The comma is important). 1100 Getopt becomes confused and thinks that this is a -r option 1101 but it cannot parse the text after the -r so it refuses to 1102 increment the optind counter. Detect this case and issue 1103 an error message here. We cannot just make this a warning, 1104 increment optind, and continue because getopt is too confused 1105 and will seg-fault the next time around. */ 1106 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]); 1107 1108 if (bfd_link_pic (&link_info)) 1109 einfo (_("%F%P: -r and %s may not be used together\n"), 1110 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1111 1112 link_info.type = type_relocatable; 1113 config.build_constructors = FALSE; 1114 config.magic_demand_paged = FALSE; 1115 config.text_read_only = FALSE; 1116 input_flags.dynamic = FALSE; 1117 break; 1118 case 'R': 1119 /* The GNU linker traditionally uses -R to mean to include 1120 only the symbols from a file. The Solaris linker uses -R 1121 to set the path used by the runtime linker to find 1122 libraries. This is the GNU linker -rpath argument. We 1123 try to support both simultaneously by checking the file 1124 named. If it is a directory, rather than a regular file, 1125 we assume -rpath was meant. */ 1126 { 1127 struct stat s; 1128 1129 if (stat (optarg, &s) >= 0 1130 && ! S_ISDIR (s.st_mode)) 1131 { 1132 lang_add_input_file (optarg, 1133 lang_input_file_is_symbols_only_enum, 1134 NULL); 1135 break; 1136 } 1137 } 1138 /* Fall through. */ 1139 case OPTION_RPATH: 1140 if (command_line.rpath == NULL) 1141 command_line.rpath = xstrdup (optarg); 1142 else 1143 { 1144 size_t rpath_len = strlen (command_line.rpath); 1145 size_t optarg_len = strlen (optarg); 1146 char *buf; 1147 char *cp = command_line.rpath; 1148 1149 /* First see whether OPTARG is already in the path. */ 1150 do 1151 { 1152 if (strncmp (optarg, cp, optarg_len) == 0 1153 && (cp[optarg_len] == 0 1154 || cp[optarg_len] == config.rpath_separator)) 1155 /* We found it. */ 1156 break; 1157 1158 /* Not yet found. */ 1159 cp = strchr (cp, config.rpath_separator); 1160 if (cp != NULL) 1161 ++cp; 1162 } 1163 while (cp != NULL); 1164 1165 if (cp == NULL) 1166 { 1167 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1168 sprintf (buf, "%s%c%s", command_line.rpath, 1169 config.rpath_separator, optarg); 1170 free (command_line.rpath); 1171 command_line.rpath = buf; 1172 } 1173 } 1174 break; 1175 case OPTION_RPATH_LINK: 1176 if (command_line.rpath_link == NULL) 1177 command_line.rpath_link = xstrdup (optarg); 1178 else 1179 { 1180 char *buf; 1181 1182 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1183 + strlen (optarg) 1184 + 2); 1185 sprintf (buf, "%s%c%s", command_line.rpath_link, 1186 config.rpath_separator, optarg); 1187 free (command_line.rpath_link); 1188 command_line.rpath_link = buf; 1189 } 1190 break; 1191 case OPTION_NO_RELAX: 1192 DISABLE_RELAXATION; 1193 break; 1194 case OPTION_RELAX: 1195 ENABLE_RELAXATION; 1196 break; 1197 case OPTION_RETAIN_SYMBOLS_FILE: 1198 add_keepsyms_file (optarg); 1199 break; 1200 case 'S': 1201 link_info.strip = strip_debugger; 1202 break; 1203 case 's': 1204 link_info.strip = strip_all; 1205 break; 1206 case OPTION_STRIP_DISCARDED: 1207 link_info.strip_discarded = TRUE; 1208 break; 1209 case OPTION_NO_STRIP_DISCARDED: 1210 link_info.strip_discarded = FALSE; 1211 break; 1212 case OPTION_DISABLE_MULTIPLE_DEFS_ABS: 1213 link_info.prohibit_multiple_definition_absolute = TRUE; 1214 break; 1215 case OPTION_SHARED: 1216 if (config.has_shared) 1217 { 1218 if (bfd_link_relocatable (&link_info)) 1219 einfo (_("%F%P: -r and %s may not be used together\n"), 1220 "-shared"); 1221 1222 link_info.type = type_dll; 1223 /* When creating a shared library, the default 1224 behaviour is to ignore any unresolved references. */ 1225 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1226 link_info.unresolved_syms_in_objects = RM_IGNORE; 1227 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1228 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1229 } 1230 else 1231 einfo (_("%F%P: -shared not supported\n")); 1232 break; 1233 case OPTION_PIE: 1234 if (config.has_shared) 1235 { 1236 if (bfd_link_relocatable (&link_info)) 1237 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie"); 1238 1239 link_info.type = type_pie; 1240 } 1241 else 1242 einfo (_("%F%P: -pie not supported\n")); 1243 break; 1244 case 'h': /* Used on Solaris. */ 1245 case OPTION_SONAME: 1246 if (optarg[0] == '\0' && command_line.soname 1247 && command_line.soname[0]) 1248 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1249 else 1250 command_line.soname = optarg; 1251 break; 1252 case OPTION_SORT_COMMON: 1253 if (optarg == NULL 1254 || strcmp (optarg, N_("descending")) == 0) 1255 config.sort_common = sort_descending; 1256 else if (strcmp (optarg, N_("ascending")) == 0) 1257 config.sort_common = sort_ascending; 1258 else 1259 einfo (_("%F%P: invalid common section sorting option: %s\n"), 1260 optarg); 1261 break; 1262 case OPTION_SORT_SECTION: 1263 if (strcmp (optarg, N_("name")) == 0) 1264 sort_section = by_name; 1265 else if (strcmp (optarg, N_("alignment")) == 0) 1266 sort_section = by_alignment; 1267 else 1268 einfo (_("%F%P: invalid section sorting option: %s\n"), 1269 optarg); 1270 break; 1271 case OPTION_STATS: 1272 config.stats = TRUE; 1273 break; 1274 case OPTION_SYMBOLIC: 1275 opt_symbolic = symbolic; 1276 break; 1277 case OPTION_SYMBOLIC_FUNCTIONS: 1278 opt_symbolic = symbolic_functions; 1279 break; 1280 case 't': 1281 ++trace_files; 1282 break; 1283 case 'T': 1284 previous_script_handle = saved_script_handle; 1285 ldfile_open_script_file (optarg); 1286 parser_input = input_script; 1287 yyparse (); 1288 previous_script_handle = NULL; 1289 break; 1290 case OPTION_DEFAULT_SCRIPT: 1291 command_line.default_script = optarg; 1292 break; 1293 case OPTION_SECTION_START: 1294 { 1295 char *optarg2; 1296 char *sec_name; 1297 int len; 1298 1299 /* Check for <something>=<somthing>... */ 1300 optarg2 = strchr (optarg, '='); 1301 if (optarg2 == NULL) 1302 einfo (_("%F%P: invalid argument to option" 1303 " \"--section-start\"\n")); 1304 1305 optarg2++; 1306 1307 /* So far so good. Are all the args present? */ 1308 if ((*optarg == '\0') || (*optarg2 == '\0')) 1309 einfo (_("%F%P: missing argument(s) to option" 1310 " \"--section-start\"\n")); 1311 1312 /* We must copy the section name as set_section_start 1313 doesn't do it for us. */ 1314 len = optarg2 - optarg; 1315 sec_name = (char *) xmalloc (len); 1316 memcpy (sec_name, optarg, len - 1); 1317 sec_name[len - 1] = 0; 1318 1319 /* Then set it... */ 1320 set_section_start (sec_name, optarg2); 1321 } 1322 break; 1323 case OPTION_TARGET_HELP: 1324 /* Mention any target specific options. */ 1325 ldemul_list_emulation_options (stdout); 1326 exit (0); 1327 case OPTION_TBSS: 1328 set_segment_start (".bss", optarg); 1329 break; 1330 case OPTION_TDATA: 1331 set_segment_start (".data", optarg); 1332 break; 1333 case OPTION_TTEXT: 1334 set_segment_start (".text", optarg); 1335 break; 1336 case OPTION_TTEXT_SEGMENT: 1337 set_segment_start (".text-segment", optarg); 1338 break; 1339 case OPTION_TRODATA_SEGMENT: 1340 set_segment_start (".rodata-segment", optarg); 1341 break; 1342 case OPTION_TLDATA_SEGMENT: 1343 set_segment_start (".ldata-segment", optarg); 1344 break; 1345 case OPTION_TRADITIONAL_FORMAT: 1346 link_info.traditional_format = TRUE; 1347 break; 1348 case OPTION_TASK_LINK: 1349 link_info.task_link = TRUE; 1350 /* Fall through. */ 1351 case OPTION_UR: 1352 if (bfd_link_pic (&link_info)) 1353 einfo (_("%F%P: -r and %s may not be used together\n"), 1354 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1355 1356 link_info.type = type_relocatable; 1357 config.build_constructors = TRUE; 1358 config.magic_demand_paged = FALSE; 1359 config.text_read_only = FALSE; 1360 input_flags.dynamic = FALSE; 1361 break; 1362 case 'u': 1363 ldlang_add_undef (optarg, TRUE); 1364 break; 1365 case OPTION_REQUIRE_DEFINED_SYMBOL: 1366 ldlang_add_require_defined (optarg); 1367 break; 1368 case OPTION_UNIQUE: 1369 if (optarg != NULL) 1370 lang_add_unique (optarg); 1371 else 1372 config.unique_orphan_sections = TRUE; 1373 break; 1374 case OPTION_VERBOSE: 1375 ldversion (1); 1376 version_printed = TRUE; 1377 verbose = TRUE; 1378 overflow_cutoff_limit = -2; 1379 if (optarg != NULL) 1380 { 1381 char *end; 1382 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1383 if (*end) 1384 einfo (_("%F%P: invalid number `%s'\n"), optarg); 1385#if BFD_SUPPORTS_PLUGINS 1386 report_plugin_symbols = level > 1; 1387#endif /* BFD_SUPPORTS_PLUGINS */ 1388 } 1389 break; 1390 case 'v': 1391 ldversion (0); 1392 version_printed = TRUE; 1393 break; 1394 case 'V': 1395 ldversion (1); 1396 version_printed = TRUE; 1397 break; 1398 case OPTION_VERSION: 1399 ldversion (2); 1400 xexit (0); 1401 break; 1402 case OPTION_VERSION_SCRIPT: 1403 /* This option indicates a small script that only specifies 1404 version information. Read it, but don't assume that 1405 we've seen a linker script. */ 1406 { 1407 FILE *hold_script_handle; 1408 1409 hold_script_handle = saved_script_handle; 1410 ldfile_open_command_file (optarg); 1411 saved_script_handle = hold_script_handle; 1412 parser_input = input_version_script; 1413 yyparse (); 1414 } 1415 break; 1416 case OPTION_VERSION_EXPORTS_SECTION: 1417 /* This option records a version symbol to be applied to the 1418 symbols listed for export to be found in the object files 1419 .exports sections. */ 1420 command_line.version_exports_section = optarg; 1421 break; 1422 case OPTION_DYNAMIC_LIST_DATA: 1423 opt_dynamic_list = dynamic_list_data; 1424 break; 1425 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1426 lang_append_dynamic_list_cpp_typeinfo (); 1427 if (opt_dynamic_list != dynamic_list_data) 1428 opt_dynamic_list = dynamic_list; 1429 break; 1430 case OPTION_DYNAMIC_LIST_CPP_NEW: 1431 lang_append_dynamic_list_cpp_new (); 1432 if (opt_dynamic_list != dynamic_list_data) 1433 opt_dynamic_list = dynamic_list; 1434 break; 1435 case OPTION_DYNAMIC_LIST: 1436 /* This option indicates a small script that only specifies 1437 a dynamic list. Read it, but don't assume that we've 1438 seen a linker script. */ 1439 { 1440 FILE *hold_script_handle; 1441 1442 hold_script_handle = saved_script_handle; 1443 ldfile_open_command_file (optarg); 1444 saved_script_handle = hold_script_handle; 1445 parser_input = input_dynamic_list; 1446 current_dynamic_list_p = &link_info.dynamic_list; 1447 yyparse (); 1448 } 1449 if (opt_dynamic_list != dynamic_list_data) 1450 opt_dynamic_list = dynamic_list; 1451 break; 1452 case OPTION_EXPORT_DYNAMIC_SYMBOL: 1453 { 1454 struct bfd_elf_version_expr *expr 1455 = lang_new_vers_pattern (NULL, xstrdup (optarg), NULL, 1456 FALSE); 1457 lang_append_dynamic_list (&export_list, expr); 1458 } 1459 break; 1460 case OPTION_EXPORT_DYNAMIC_SYMBOL_LIST: 1461 /* This option indicates a small script that only specifies 1462 an export list. Read it, but don't assume that we've 1463 seen a linker script. */ 1464 { 1465 FILE *hold_script_handle; 1466 1467 hold_script_handle = saved_script_handle; 1468 ldfile_open_command_file (optarg); 1469 saved_script_handle = hold_script_handle; 1470 parser_input = input_dynamic_list; 1471 current_dynamic_list_p = &export_list; 1472 yyparse (); 1473 } 1474 break; 1475 case OPTION_WARN_COMMON: 1476 config.warn_common = TRUE; 1477 break; 1478 case OPTION_WARN_CONSTRUCTORS: 1479 config.warn_constructors = TRUE; 1480 break; 1481 case OPTION_WARN_FATAL: 1482 config.fatal_warnings = TRUE; 1483 break; 1484 case OPTION_NO_WARN_FATAL: 1485 config.fatal_warnings = FALSE; 1486 break; 1487 case OPTION_WARN_MULTIPLE_GP: 1488 config.warn_multiple_gp = TRUE; 1489 break; 1490 case OPTION_WARN_ONCE: 1491 config.warn_once = TRUE; 1492 break; 1493 case OPTION_WARN_SECTION_ALIGN: 1494 config.warn_section_align = TRUE; 1495 break; 1496 case OPTION_WARN_TEXTREL: 1497 link_info.textrel_check = textrel_check_warning; 1498 break; 1499 case OPTION_WARN_ALTERNATE_EM: 1500 link_info.warn_alternate_em = TRUE; 1501 break; 1502 case OPTION_WHOLE_ARCHIVE: 1503 input_flags.whole_archive = TRUE; 1504 break; 1505 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1506 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1507 break; 1508 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1509 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1510 break; 1511 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1512 input_flags.add_DT_NEEDED_for_regular = TRUE; 1513 break; 1514 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1515 input_flags.add_DT_NEEDED_for_regular = FALSE; 1516 break; 1517 case OPTION_WRAP: 1518 add_wrap (optarg); 1519 break; 1520 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1521 add_ignoresym (&link_info, optarg); 1522 break; 1523 case OPTION_DISCARD_NONE: 1524 link_info.discard = discard_none; 1525 break; 1526 case 'X': 1527 link_info.discard = discard_l; 1528 break; 1529 case 'x': 1530 link_info.discard = discard_all; 1531 break; 1532 case 'Y': 1533 if (CONST_STRNEQ (optarg, "P,")) 1534 optarg += 2; 1535 free (default_dirlist); 1536 default_dirlist = xstrdup (optarg); 1537 break; 1538 case 'y': 1539 add_ysym (optarg); 1540 break; 1541 case OPTION_SPARE_DYNAMIC_TAGS: 1542 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1543 break; 1544 case OPTION_SPLIT_BY_RELOC: 1545 if (optarg != NULL) 1546 config.split_by_reloc = strtoul (optarg, NULL, 0); 1547 else 1548 config.split_by_reloc = 32768; 1549 break; 1550 case OPTION_SPLIT_BY_FILE: 1551 if (optarg != NULL) 1552 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1553 else 1554 config.split_by_file = 1; 1555 break; 1556 case OPTION_CHECK_SECTIONS: 1557 command_line.check_section_addresses = 1; 1558 break; 1559 case OPTION_NO_CHECK_SECTIONS: 1560 command_line.check_section_addresses = 0; 1561 break; 1562 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1563 command_line.accept_unknown_input_arch = TRUE; 1564 break; 1565 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1566 command_line.accept_unknown_input_arch = FALSE; 1567 break; 1568 case '(': 1569 lang_enter_group (); 1570 ingroup++; 1571 break; 1572 case ')': 1573 if (! ingroup) 1574 einfo (_("%F%P: group ended before it began (--help for usage)\n")); 1575 1576 lang_leave_group (); 1577 ingroup--; 1578 break; 1579 1580 case OPTION_INIT: 1581 link_info.init_function = optarg; 1582 break; 1583 1584 case OPTION_FINI: 1585 link_info.fini_function = optarg; 1586 break; 1587 1588 case OPTION_REDUCE_MEMORY_OVERHEADS: 1589 link_info.reduce_memory_overheads = TRUE; 1590 if (config.hash_table_size == 0) 1591 config.hash_table_size = 1021; 1592 break; 1593 1594 case OPTION_HASH_SIZE: 1595 { 1596 bfd_size_type new_size; 1597 1598 new_size = strtoul (optarg, NULL, 0); 1599 if (new_size) 1600 config.hash_table_size = new_size; 1601 else 1602 einfo (_("%X%P: --hash-size needs a numeric argument\n")); 1603 } 1604 break; 1605 1606 case OPTION_PUSH_STATE: 1607 input_flags.pushed = xmemdup (&input_flags, 1608 sizeof (input_flags), 1609 sizeof (input_flags)); 1610 break; 1611 1612 case OPTION_POP_STATE: 1613 if (input_flags.pushed == NULL) 1614 einfo (_("%F%P: no state pushed before popping\n")); 1615 else 1616 { 1617 struct lang_input_statement_flags *oldp = input_flags.pushed; 1618 memcpy (&input_flags, oldp, sizeof (input_flags)); 1619 free (oldp); 1620 } 1621 break; 1622 1623 case OPTION_PRINT_MEMORY_USAGE: 1624 command_line.print_memory_usage = TRUE; 1625 break; 1626 1627 case OPTION_ORPHAN_HANDLING: 1628 if (strcasecmp (optarg, "place") == 0) 1629 config.orphan_handling = orphan_handling_place; 1630 else if (strcasecmp (optarg, "warn") == 0) 1631 config.orphan_handling = orphan_handling_warn; 1632 else if (strcasecmp (optarg, "error") == 0) 1633 config.orphan_handling = orphan_handling_error; 1634 else if (strcasecmp (optarg, "discard") == 0) 1635 config.orphan_handling = orphan_handling_discard; 1636 else 1637 einfo (_("%F%P: invalid argument to option" 1638 " \"--orphan-handling\"\n")); 1639 break; 1640 1641 case OPTION_NO_PRINT_MAP_DISCARDED: 1642 config.print_map_discarded = FALSE; 1643 break; 1644 1645 case OPTION_PRINT_MAP_DISCARDED: 1646 config.print_map_discarded = TRUE; 1647 break; 1648 1649 case OPTION_DEPENDENCY_FILE: 1650 config.dependency_file = optarg; 1651 break; 1652 1653 case OPTION_CTF_VARIABLES: 1654 config.ctf_variables = TRUE; 1655 break; 1656 1657 case OPTION_NO_CTF_VARIABLES: 1658 config.ctf_variables = FALSE; 1659 break; 1660 1661 case OPTION_CTF_SHARE_TYPES: 1662 if (strcmp (optarg, "share-unconflicted") == 0) 1663 config.ctf_share_duplicated = FALSE; 1664 else if (strcmp (optarg, "share-duplicated") == 0) 1665 config.ctf_share_duplicated = TRUE; 1666 else 1667 einfo (_("%F%P: bad --ctf-share-types option: %s\n"), optarg); 1668 break; 1669 } 1670 } 1671 1672 /* Run a couple of checks on the map filename. */ 1673 if (config.map_filename) 1674 { 1675 if (config.map_filename[0] == 0) 1676 { 1677 einfo (_("%P: no file/directory name provided for map output; ignored\n")); 1678 config.map_filename = NULL; 1679 } 1680 else 1681 { 1682 struct stat s; 1683 1684 /* If the map filename is actually a directory then create 1685 a file inside it, based upon the output filename. */ 1686 if (stat (config.map_filename, &s) >= 0 1687 && S_ISDIR (s.st_mode)) 1688 { 1689 char * new_name; 1690 1691 /* FIXME: This is a (trivial) memory leak. */ 1692 if (asprintf (&new_name, "%s/%s.map", 1693 config.map_filename, output_filename) < 0) 1694 { 1695 /* If this alloc fails then something is probably very 1696 wrong. Better to halt now rather than continue on 1697 into more problems. */ 1698 einfo (_("%P%F: cannot create name for linker map file: %E\n")); 1699 new_name = NULL; 1700 } 1701 1702 config.map_filename = new_name; 1703 } 1704 } 1705 } 1706 1707 if (command_line.soname && command_line.soname[0] == '\0') 1708 { 1709 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1710 command_line.soname = NULL; 1711 } 1712 1713 while (ingroup) 1714 { 1715 einfo (_("%P: missing --end-group; added as last command line option\n")); 1716 lang_leave_group (); 1717 ingroup--; 1718 } 1719 1720 if (default_dirlist != NULL) 1721 { 1722 set_default_dirlist (default_dirlist); 1723 free (default_dirlist); 1724 } 1725 1726 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1727 /* FIXME: Should we allow emulations a chance to set this ? */ 1728 link_info.unresolved_syms_in_objects = RM_DIAGNOSE; 1729 1730 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1731 /* FIXME: Should we allow emulations a chance to set this ? */ 1732 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE; 1733 1734 if (bfd_link_relocatable (&link_info) 1735 && command_line.check_section_addresses < 0) 1736 command_line.check_section_addresses = 0; 1737 1738 if (export_list) 1739 { 1740 struct bfd_elf_version_expr *head = export_list->head.list; 1741 struct bfd_elf_version_expr *next; 1742 1743 /* For --export-dynamic-symbol[-list]: 1744 1. When building executable, treat like --dynamic-list. 1745 2. When building shared object: 1746 a. If -Bsymbolic or --dynamic-list are used, treat like 1747 --dynamic-list. 1748 b. Otherwise, ignored. 1749 */ 1750 if (!bfd_link_relocatable (&link_info) 1751 && (bfd_link_executable (&link_info) 1752 || opt_symbolic != symbolic_unset 1753 || opt_dynamic_list != dynamic_list_unset)) 1754 { 1755 /* Append the export list to link_info.dynamic_list. */ 1756 if (link_info.dynamic_list) 1757 { 1758 for (next = head; next->next != NULL; next = next->next) 1759 ; 1760 next->next = link_info.dynamic_list->head.list; 1761 link_info.dynamic_list->head.list = head; 1762 } 1763 else 1764 link_info.dynamic_list = export_list; 1765 1766 if (opt_dynamic_list != dynamic_list_data) 1767 opt_dynamic_list = dynamic_list; 1768 } 1769 else 1770 { 1771 /* Free the export list. */ 1772 for (; head->next != NULL; head = next) 1773 { 1774 next = head->next; 1775 free (head); 1776 } 1777 free (export_list); 1778 } 1779 } 1780 1781 switch (opt_dynamic_list) 1782 { 1783 case dynamic_list_unset: 1784 break; 1785 case dynamic_list_data: 1786 link_info.dynamic_data = TRUE; 1787 /* Fall through. */ 1788 case dynamic_list: 1789 link_info.dynamic = TRUE; 1790 opt_symbolic = symbolic_unset; 1791 break; 1792 } 1793 1794 /* -Bsymbolic and -Bsymbols-functions are for shared library output. */ 1795 if (bfd_link_dll (&link_info)) 1796 switch (opt_symbolic) 1797 { 1798 case symbolic_unset: 1799 break; 1800 case symbolic: 1801 link_info.symbolic = TRUE; 1802 if (link_info.dynamic_list) 1803 { 1804 struct bfd_elf_version_expr *ent, *next; 1805 for (ent = link_info.dynamic_list->head.list; ent; ent = next) 1806 { 1807 next = ent->next; 1808 free (ent); 1809 } 1810 free (link_info.dynamic_list); 1811 link_info.dynamic_list = NULL; 1812 } 1813 break; 1814 case symbolic_functions: 1815 link_info.dynamic = TRUE; 1816 link_info.dynamic_data = TRUE; 1817 break; 1818 } 1819 1820 if (!bfd_link_dll (&link_info)) 1821 { 1822 if (command_line.filter_shlib) 1823 einfo (_("%F%P: -F may not be used without -shared\n")); 1824 if (command_line.auxiliary_filters) 1825 einfo (_("%F%P: -f may not be used without -shared\n")); 1826 } 1827 1828 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1829 don't see how else this can be handled, since in this case we 1830 must preserve all externally visible symbols. */ 1831 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1832 { 1833 link_info.strip = strip_debugger; 1834 if (link_info.discard == discard_sec_merge) 1835 link_info.discard = discard_all; 1836 } 1837} 1838 1839/* Add the (colon-separated) elements of DIRLIST_PTR to the 1840 library search path. */ 1841 1842static void 1843set_default_dirlist (char *dirlist_ptr) 1844{ 1845 char *p; 1846 1847 while (1) 1848 { 1849 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1850 if (p != NULL) 1851 *p = '\0'; 1852 if (*dirlist_ptr != '\0') 1853 ldfile_add_library_path (dirlist_ptr, TRUE); 1854 if (p == NULL) 1855 break; 1856 dirlist_ptr = p + 1; 1857 } 1858} 1859 1860static void 1861set_section_start (char *sect, char *valstr) 1862{ 1863 const char *end; 1864 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1865 if (*end) 1866 einfo (_("%F%P: invalid hex number `%s'\n"), valstr); 1867 lang_section_start (sect, exp_intop (val), NULL); 1868} 1869 1870static void 1871set_segment_start (const char *section, char *valstr) 1872{ 1873 const char *name; 1874 const char *end; 1875 segment_type *seg; 1876 1877 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1878 if (*end) 1879 einfo (_("%F%P: invalid hex number `%s'\n"), valstr); 1880 /* If we already have an entry for this segment, update the existing 1881 value. */ 1882 name = section + 1; 1883 for (seg = segments; seg; seg = seg->next) 1884 if (strcmp (seg->name, name) == 0) 1885 { 1886 seg->value = val; 1887 lang_section_start (section, exp_intop (val), seg); 1888 return; 1889 } 1890 /* There was no existing value so we must create a new segment 1891 entry. */ 1892 seg = stat_alloc (sizeof (*seg)); 1893 seg->name = name; 1894 seg->value = val; 1895 seg->used = FALSE; 1896 /* Add it to the linked list of segments. */ 1897 seg->next = segments; 1898 segments = seg; 1899 /* Historically, -Ttext and friends set the base address of a 1900 particular section. For backwards compatibility, we still do 1901 that. If a SEGMENT_START directive is seen, the section address 1902 assignment will be disabled. */ 1903 lang_section_start (section, exp_intop (val), seg); 1904} 1905 1906static void 1907elf_shlib_list_options (FILE *file) 1908{ 1909 fprintf (file, _("\ 1910 --audit=AUDITLIB Specify a library to use for auditing\n")); 1911 fprintf (file, _("\ 1912 -Bgroup Selects group name lookup rules for DSO\n")); 1913 fprintf (file, _("\ 1914 --disable-new-dtags Disable new dynamic tags\n")); 1915 fprintf (file, _("\ 1916 --enable-new-dtags Enable new dynamic tags\n")); 1917 fprintf (file, _("\ 1918 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1919 fprintf (file, _("\ 1920 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n")); 1921 fprintf (file, _("\ 1922 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1923 fprintf (file, _("\ 1924 --hash-style=STYLE Set hash style to sysv/gnu/both. Default: ")); 1925 if (DEFAULT_EMIT_SYSV_HASH) 1926 { 1927 /* Note - these strings are not translated as 1928 they are keywords not descriptive text. */ 1929 if (DEFAULT_EMIT_GNU_HASH) 1930 fprintf (file, "both\n"); 1931 else 1932 fprintf (file, "sysv\n"); 1933 } 1934 else 1935 { 1936 if (DEFAULT_EMIT_GNU_HASH) 1937 fprintf (file, "gnu\n"); 1938 else 1939 /* FIXME: Can this happen ? */ 1940 fprintf (file, "none\n"); 1941 } 1942 fprintf (file, _("\ 1943 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1944 Specify a library to use for auditing dependencies\n")); 1945 fprintf (file, _("\ 1946 -z combreloc Merge dynamic relocs into one section and sort\n")); 1947 fprintf (file, _("\ 1948 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1949 fprintf (file, _("\ 1950 -z global Make symbols in DSO available for subsequently\n\ 1951 loaded objects\n")); 1952 fprintf (file, _("\ 1953 -z initfirst Mark DSO to be initialized first at runtime\n")); 1954 fprintf (file, _("\ 1955 -z interpose Mark object to interpose all DSOs but executable\n")); 1956 fprintf (file, _("\ 1957 -z lazy Mark object lazy runtime binding (default)\n")); 1958 fprintf (file, _("\ 1959 -z loadfltr Mark object requiring immediate process\n")); 1960 fprintf (file, _("\ 1961 -z nocopyreloc Don't create copy relocs\n")); 1962 fprintf (file, _("\ 1963 -z nodefaultlib Mark object not to use default search paths\n")); 1964 fprintf (file, _("\ 1965 -z nodelete Mark DSO non-deletable at runtime\n")); 1966 fprintf (file, _("\ 1967 -z nodlopen Mark DSO not available to dlopen\n")); 1968 fprintf (file, _("\ 1969 -z nodump Mark DSO not available to dldump\n")); 1970 fprintf (file, _("\ 1971 -z now Mark object non-lazy runtime binding\n")); 1972 fprintf (file, _("\ 1973 -z origin Mark object requiring immediate $ORIGIN\n\ 1974 processing at runtime\n")); 1975#if DEFAULT_LD_Z_RELRO 1976 fprintf (file, _("\ 1977 -z relro Create RELRO program header (default)\n")); 1978 fprintf (file, _("\ 1979 -z norelro Don't create RELRO program header\n")); 1980#else 1981 fprintf (file, _("\ 1982 -z relro Create RELRO program header\n")); 1983 fprintf (file, _("\ 1984 -z norelro Don't create RELRO program header (default)\n")); 1985#endif 1986#if DEFAULT_LD_Z_SEPARATE_CODE 1987 fprintf (file, _("\ 1988 -z separate-code Create separate code program header (default)\n")); 1989 fprintf (file, _("\ 1990 -z noseparate-code Don't create separate code program header\n")); 1991#else 1992 fprintf (file, _("\ 1993 -z separate-code Create separate code program header\n")); 1994 fprintf (file, _("\ 1995 -z noseparate-code Don't create separate code program header (default)\n")); 1996#endif 1997 fprintf (file, _("\ 1998 -z common Generate common symbols with STT_COMMON type\n")); 1999 fprintf (file, _("\ 2000 -z nocommon Generate common symbols with STT_OBJECT type\n")); 2001 fprintf (file, _("\ 2002 -z stack-size=SIZE Set size of stack segment\n")); 2003 if (link_info.textrel_check == textrel_check_error) 2004 fprintf (file, _("\ 2005 -z text Treat DT_TEXTREL in output as error (default)\n")); 2006 else 2007 fprintf (file, _("\ 2008 -z text Treat DT_TEXTREL in output as error\n")); 2009 if (link_info.textrel_check == textrel_check_none) 2010 { 2011 fprintf (file, _("\ 2012 -z notext Don't treat DT_TEXTREL in output as error (default)\n")); 2013 fprintf (file, _("\ 2014 -z textoff Don't treat DT_TEXTREL in output as error (default)\n")); 2015 } 2016 else 2017 { 2018 fprintf (file, _("\ 2019 -z notext Don't treat DT_TEXTREL in output as error\n")); 2020 fprintf (file, _("\ 2021 -z textoff Don't treat DT_TEXTREL in output as error\n")); 2022 } 2023} 2024 2025static void 2026elf_static_list_options (FILE *file) 2027{ 2028 fprintf (file, _("\ 2029 --build-id[=STYLE] Generate build ID note\n")); 2030 fprintf (file, _("\ 2031 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 2032 Compress DWARF debug sections using zlib\n")); 2033#ifdef DEFAULT_FLAG_COMPRESS_DEBUG 2034 fprintf (file, _("\ 2035 Default: zlib-gabi\n")); 2036#else 2037 fprintf (file, _("\ 2038 Default: none\n")); 2039#endif 2040 fprintf (file, _("\ 2041 -z common-page-size=SIZE Set common page size to SIZE\n")); 2042 fprintf (file, _("\ 2043 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 2044 fprintf (file, _("\ 2045 -z defs Report unresolved symbols in object files\n")); 2046 fprintf (file, _("\ 2047 -z muldefs Allow multiple definitions\n")); 2048 fprintf (file, _("\ 2049 -z execstack Mark executable as requiring executable stack\n")); 2050 fprintf (file, _("\ 2051 -z noexecstack Mark executable as not requiring executable stack\n")); 2052 fprintf (file, _("\ 2053 -z unique-symbol Avoid duplicated local symbol names\n")); 2054 fprintf (file, _("\ 2055 -z nounique-symbol Keep duplicated local symbol names (default)\n")); 2056 fprintf (file, _("\ 2057 -z globalaudit Mark executable requiring global auditing\n")); 2058} 2059 2060static void 2061elf_plt_unwind_list_options (FILE *file) 2062{ 2063 fprintf (file, _("\ 2064 --ld-generated-unwind-info Generate exception handling info for PLT\n")); 2065 fprintf (file, _("\ 2066 --no-ld-generated-unwind-info\n\ 2067 Don't generate exception handling info for PLT\n")); 2068} 2069 2070static void 2071ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 2072 bfd_boolean plt_unwind) 2073{ 2074 if (!elf) 2075 return; 2076 printf (_("ELF emulations:\n")); 2077 if (plt_unwind) 2078 elf_plt_unwind_list_options (file); 2079 elf_static_list_options (file); 2080 if (shlib) 2081 elf_shlib_list_options (file); 2082} 2083 2084 2085/* Print help messages for the options. */ 2086 2087static void 2088help (void) 2089{ 2090 unsigned i; 2091 const char **targets, **pp; 2092 int len; 2093 2094 printf (_("Usage: %s [options] file...\n"), program_name); 2095 2096 printf (_("Options:\n")); 2097 for (i = 0; i < OPTION_COUNT; i++) 2098 { 2099 if (ld_options[i].doc != NULL) 2100 { 2101 bfd_boolean comma; 2102 unsigned j; 2103 2104 printf (" "); 2105 2106 comma = FALSE; 2107 len = 2; 2108 2109 j = i; 2110 do 2111 { 2112 if (ld_options[j].shortopt != '\0' 2113 && ld_options[j].control != NO_HELP) 2114 { 2115 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 2116 len += (comma ? 2 : 0) + 2; 2117 if (ld_options[j].arg != NULL) 2118 { 2119 if (ld_options[j].opt.has_arg != optional_argument) 2120 { 2121 printf (" "); 2122 ++len; 2123 } 2124 printf ("%s", _(ld_options[j].arg)); 2125 len += strlen (_(ld_options[j].arg)); 2126 } 2127 comma = TRUE; 2128 } 2129 ++j; 2130 } 2131 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 2132 2133 j = i; 2134 do 2135 { 2136 if (ld_options[j].opt.name != NULL 2137 && ld_options[j].control != NO_HELP) 2138 { 2139 int two_dashes = 2140 (ld_options[j].control == TWO_DASHES 2141 || ld_options[j].control == EXACTLY_TWO_DASHES); 2142 2143 printf ("%s-%s%s", 2144 comma ? ", " : "", 2145 two_dashes ? "-" : "", 2146 ld_options[j].opt.name); 2147 len += ((comma ? 2 : 0) 2148 + 1 2149 + (two_dashes ? 1 : 0) 2150 + strlen (ld_options[j].opt.name)); 2151 if (ld_options[j].arg != NULL) 2152 { 2153 printf (" %s", _(ld_options[j].arg)); 2154 len += 1 + strlen (_(ld_options[j].arg)); 2155 } 2156 comma = TRUE; 2157 } 2158 ++j; 2159 } 2160 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 2161 2162 if (len >= 30) 2163 { 2164 printf ("\n"); 2165 len = 0; 2166 } 2167 2168 for (; len < 30; len++) 2169 putchar (' '); 2170 2171 printf ("%s\n", _(ld_options[i].doc)); 2172 } 2173 } 2174 printf (_(" @FILE")); 2175 for (len = strlen (" @FILE"); len < 30; len++) 2176 putchar (' '); 2177 printf (_("Read options from FILE\n")); 2178 2179 /* Note: Various tools (such as libtool) depend upon the 2180 format of the listings below - do not change them. */ 2181 /* xgettext:c-format */ 2182 printf (_("%s: supported targets:"), program_name); 2183 targets = bfd_target_list (); 2184 for (pp = targets; *pp != NULL; pp++) 2185 printf (" %s", *pp); 2186 free (targets); 2187 printf ("\n"); 2188 2189 /* xgettext:c-format */ 2190 printf (_("%s: supported emulations: "), program_name); 2191 ldemul_list_emulations (stdout); 2192 printf ("\n"); 2193 2194 /* xgettext:c-format */ 2195 printf (_("%s: emulation specific options:\n"), program_name); 2196 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 2197 ELF_PLT_UNWIND_LIST_OPTIONS); 2198 ldemul_list_emulation_options (stdout); 2199 printf ("\n"); 2200 2201 if (REPORT_BUGS_TO[0]) 2202 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 2203} 2204