lexsup.c revision 1.5
1 /* Parse options for the GNU linker. 2 Copyright (C) 1991-2015 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 58 static void set_default_dirlist (char *); 59 static void set_section_start (char *, char *); 60 static void set_segment_start (const char *, char *); 61 static void help (void); 62 63 /* The long options. This structure is used for both the option 64 parsing and the help text. */ 65 66 enum 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 85 struct 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 99 static 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 #ifdef ENABLE_PLUGINS 168 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 169 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 170 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 171 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 172 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 173 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 174 ONE_DASH }, 175 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 176 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 177 ONE_DASH }, 178 #endif /* ENABLE_PLUGINS */ 179 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 180 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 181 ONE_DASH }, 182 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 183 '\0', NULL, N_("Ignored for gold option compatibility"), 184 TWO_DASHES }, 185 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 186 '\0', NULL, N_("Ignored for gold option compatibility"), 187 TWO_DASHES }, 188 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 189 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 190 { {"emit-relocs", no_argument, NULL, 'q'}, 191 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 192 { {"relocatable", no_argument, NULL, 'r'}, 193 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 194 { {NULL, no_argument, NULL, '\0'}, 195 'i', NULL, NULL, ONE_DASH }, 196 { {"just-symbols", required_argument, NULL, 'R'}, 197 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 198 TWO_DASHES }, 199 { {"strip-all", no_argument, NULL, 's'}, 200 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 201 { {"strip-debug", no_argument, NULL, 'S'}, 202 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 203 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 204 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 205 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 206 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 207 { {"trace", no_argument, NULL, 't'}, 208 't', NULL, N_("Trace file opens"), TWO_DASHES }, 209 { {"script", required_argument, NULL, 'T'}, 210 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 211 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 212 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 213 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 214 '\0', NULL, NULL, ONE_DASH }, 215 { {"undefined", required_argument, NULL, 'u'}, 216 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 217 TWO_DASHES }, 218 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, 219 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), 220 TWO_DASHES }, 221 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 222 '\0', N_("[=SECTION]"), 223 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 224 { {"Ur", no_argument, NULL, OPTION_UR}, 225 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 226 { {"version", no_argument, NULL, OPTION_VERSION}, 227 'v', NULL, N_("Print version information"), TWO_DASHES }, 228 { {NULL, no_argument, NULL, '\0'}, 229 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 230 { {"discard-all", no_argument, NULL, 'x'}, 231 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 232 { {"discard-locals", no_argument, NULL, 'X'}, 233 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 234 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 235 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 236 { {"trace-symbol", required_argument, NULL, 'y'}, 237 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 238 { {NULL, required_argument, NULL, '\0'}, 239 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 240 ONE_DASH }, 241 { {"start-group", no_argument, NULL, '('}, 242 '(', NULL, N_("Start a group"), TWO_DASHES }, 243 { {"end-group", no_argument, NULL, ')'}, 244 ')', NULL, N_("End a group"), TWO_DASHES }, 245 { {"accept-unknown-input-arch", no_argument, NULL, 246 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 247 '\0', NULL, 248 N_("Accept input files whose architecture cannot be determined"), 249 TWO_DASHES }, 250 { {"no-accept-unknown-input-arch", no_argument, NULL, 251 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 252 '\0', NULL, N_("Reject input files whose architecture is unknown"), 253 TWO_DASHES }, 254 255 /* The next two options are deprecated because of their similarity to 256 --as-needed and --no-as-needed. They have been replaced by 257 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 258 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 259 '\0', NULL, NULL, NO_HELP }, 260 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 261 '\0', NULL, NULL, NO_HELP }, 262 263 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 264 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 265 TWO_DASHES }, 266 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 267 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 268 " the command line"), 269 TWO_DASHES }, 270 { {"assert", required_argument, NULL, OPTION_ASSERT}, 271 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 272 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 273 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 274 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 275 '\0', NULL, NULL, ONE_DASH }, 276 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 277 '\0', NULL, NULL, ONE_DASH }, 278 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 279 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 280 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 281 '\0', NULL, NULL, ONE_DASH }, 282 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 283 '\0', NULL, NULL, ONE_DASH }, 284 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 285 '\0', NULL, NULL, ONE_DASH }, 286 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 287 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 288 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 289 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 290 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 291 '\0', NULL, N_("Check section addresses for overlaps (default)"), 292 TWO_DASHES }, 293 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 294 '\0', NULL, N_("Do not check section addresses for overlaps"), 295 TWO_DASHES }, 296 { {"copy-dt-needed-entries", no_argument, NULL, 297 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 298 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 299 TWO_DASHES }, 300 { {"no-copy-dt-needed-entries", no_argument, NULL, 301 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 302 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 303 TWO_DASHES }, 304 305 { {"cref", no_argument, NULL, OPTION_CREF}, 306 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 307 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 308 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 309 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 310 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 311 TWO_DASHES }, 312 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 313 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 314 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 315 '\0', NULL, N_("Treat warnings as errors"), 316 TWO_DASHES }, 317 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 318 '\0', NULL, N_("Do not treat warnings as errors (default)"), 319 TWO_DASHES }, 320 { {"fini", required_argument, NULL, OPTION_FINI}, 321 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 322 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 323 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 324 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 325 '\0', NULL, N_("Remove unused sections (on some targets)"), 326 TWO_DASHES }, 327 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 328 '\0', NULL, N_("Don't remove unused sections (default)"), 329 TWO_DASHES }, 330 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 331 '\0', NULL, N_("List removed unused sections on stderr"), 332 TWO_DASHES }, 333 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 334 '\0', NULL, N_("Do not list removed unused sections"), 335 TWO_DASHES }, 336 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 337 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 338 TWO_DASHES }, 339 { {"help", no_argument, NULL, OPTION_HELP}, 340 '\0', NULL, N_("Print option help"), TWO_DASHES }, 341 { {"init", required_argument, NULL, OPTION_INIT}, 342 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 343 { {"Map", required_argument, NULL, OPTION_MAP}, 344 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 345 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 346 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 347 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 348 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 349 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 350 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 351 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 352 '\0', NULL, N_("Do not allow unresolved references in object files"), 353 TWO_DASHES }, 354 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 355 '\0', NULL, N_("Allow unresolved references in shared libraries"), 356 TWO_DASHES }, 357 { {"no-allow-shlib-undefined", no_argument, NULL, 358 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 359 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 360 TWO_DASHES }, 361 { {"allow-multiple-definition", no_argument, NULL, 362 OPTION_ALLOW_MULTIPLE_DEFINITION}, 363 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 364 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 365 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 366 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 367 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 368 { {"default-imported-symver", no_argument, NULL, 369 OPTION_DEFAULT_IMPORTED_SYMVER}, 370 '\0', NULL, N_("Create default symbol version for imported symbols"), 371 TWO_DASHES }, 372 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 373 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 374 { {"no-warn-search-mismatch", no_argument, NULL, 375 OPTION_NO_WARN_SEARCH_MISMATCH}, 376 '\0', NULL, N_("Don't warn on finding an incompatible library"), 377 TWO_DASHES}, 378 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 379 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 380 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 381 '\0', NULL, N_("Create an output file even if errors occur"), 382 TWO_DASHES }, 383 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 384 '\0', NULL, NULL, NO_HELP }, 385 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 386 '\0', NULL, N_("Only use library directories specified on\n" 387 " the command line"), 388 ONE_DASH }, 389 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 390 '\0', N_("TARGET"), N_("Specify target of output file"), 391 EXACTLY_TWO_DASHES }, 392 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 393 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 394 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 395 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 396 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 397 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 398 { {"reduce-memory-overheads", no_argument, NULL, 399 OPTION_REDUCE_MEMORY_OVERHEADS}, 400 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 401 TWO_DASHES }, 402 { {"relax", no_argument, NULL, OPTION_RELAX}, 403 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 404 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 405 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 406 { {"retain-symbols-file", required_argument, NULL, 407 OPTION_RETAIN_SYMBOLS_FILE}, 408 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 409 { {"rpath", required_argument, NULL, OPTION_RPATH}, 410 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 411 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 412 '\0', N_("PATH"), N_("Set link time shared library search path"), 413 ONE_DASH }, 414 { {"shared", no_argument, NULL, OPTION_SHARED}, 415 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 416 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD, NetBSD. */ 417 '\0', NULL, NULL, ONE_DASH }, 418 { {"pie", no_argument, NULL, OPTION_PIE}, 419 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 420 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 421 '\0', NULL, NULL, TWO_DASHES }, 422 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 423 '\0', N_("[=ascending|descending]"), 424 N_("Sort common symbols by alignment [in specified order]"), 425 TWO_DASHES }, 426 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 427 '\0', NULL, NULL, NO_HELP }, 428 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 429 '\0', N_("name|alignment"), 430 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 431 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 432 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 433 TWO_DASHES }, 434 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 435 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 436 TWO_DASHES }, 437 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 438 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 439 TWO_DASHES }, 440 { {"stats", no_argument, NULL, OPTION_STATS}, 441 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 442 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 443 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 444 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 445 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 446 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 447 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 448 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 449 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 450 TWO_DASHES }, 451 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 452 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 453 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 454 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 455 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 456 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 457 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 458 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 459 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 460 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 461 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 462 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 463 { {"unresolved-symbols=<method>", required_argument, NULL, 464 OPTION_UNRESOLVED_SYMBOLS}, 465 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 466 " ignore-all, report-all, ignore-in-object-files,\n" 467 " ignore-in-shared-libs"), 468 TWO_DASHES }, 469 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 470 '\0', N_("[=NUMBER]"), 471 N_("Output lots of information during link"), TWO_DASHES }, 472 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 473 '\0', NULL, NULL, NO_HELP }, 474 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 475 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 476 { {"version-exports-section", required_argument, NULL, 477 OPTION_VERSION_EXPORTS_SECTION }, 478 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 479 " SYMBOL as the version."), 480 TWO_DASHES }, 481 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 482 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 483 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 484 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 485 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 486 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 487 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 488 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 489 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 490 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 491 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 492 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 493 TWO_DASHES }, 494 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 495 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 496 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 497 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 498 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 499 '\0', NULL, N_("Warn if start of section changes due to alignment"), 500 TWO_DASHES }, 501 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 502 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 503 TWO_DASHES }, 504 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 505 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 506 TWO_DASHES }, 507 { {"warn-unresolved-symbols", no_argument, NULL, 508 OPTION_WARN_UNRESOLVED_SYMBOLS}, 509 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 510 { {"error-unresolved-symbols", no_argument, NULL, 511 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 512 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 513 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 514 '\0', NULL, N_("Include all objects from following archives"), 515 TWO_DASHES }, 516 { {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 517 '\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */ 518 { {"wrap", required_argument, NULL, OPTION_WRAP}, 519 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 520 { {"ignore-unresolved-symbol", required_argument, NULL, 521 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 522 '\0', N_("SYMBOL"), 523 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 524 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 525 '\0', NULL, N_("Push state of flags governing input file handling"), 526 TWO_DASHES }, 527 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 528 '\0', NULL, N_("Pop state of flags governing input file handling"), 529 TWO_DASHES }, 530 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 531 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 532 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 533 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 534 TWO_DASHES }, 535 }; 536 537 #define OPTION_COUNT ARRAY_SIZE (ld_options) 538 539 void 540 parse_args (unsigned argc, char **argv) 541 { 542 unsigned i; 543 int is, il, irl; 544 int ingroup = 0; 545 char *default_dirlist = NULL; 546 char *shortopts; 547 struct option *longopts; 548 struct option *really_longopts; 549 int last_optind; 550 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 551 552 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 553 longopts = (struct option *) 554 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 555 really_longopts = (struct option *) 556 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 557 558 /* Starting the short option string with '-' is for programs that 559 expect options and other ARGV-elements in any order and that care about 560 the ordering of the two. We describe each non-option ARGV-element 561 as if it were the argument of an option with character code 1. */ 562 shortopts[0] = '-'; 563 is = 1; 564 il = 0; 565 irl = 0; 566 for (i = 0; i < OPTION_COUNT; i++) 567 { 568 if (ld_options[i].shortopt != '\0') 569 { 570 shortopts[is] = ld_options[i].shortopt; 571 ++is; 572 if (ld_options[i].opt.has_arg == required_argument 573 || ld_options[i].opt.has_arg == optional_argument) 574 { 575 shortopts[is] = ':'; 576 ++is; 577 if (ld_options[i].opt.has_arg == optional_argument) 578 { 579 shortopts[is] = ':'; 580 ++is; 581 } 582 } 583 } 584 if (ld_options[i].opt.name != NULL) 585 { 586 if (ld_options[i].control == EXACTLY_TWO_DASHES) 587 { 588 really_longopts[irl] = ld_options[i].opt; 589 ++irl; 590 } 591 else 592 { 593 longopts[il] = ld_options[i].opt; 594 ++il; 595 } 596 } 597 } 598 shortopts[is] = '\0'; 599 longopts[il].name = NULL; 600 really_longopts[irl].name = NULL; 601 602 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 603 604 /* The -G option is ambiguous on different platforms. Sometimes it 605 specifies the largest data size to put into the small data 606 section. Sometimes it is equivalent to --shared. Unfortunately, 607 the first form takes an argument, while the second does not. 608 609 We need to permit the --shared form because on some platforms, 610 such as Solaris, gcc -shared will pass -G to the linker. 611 612 To permit either usage, we look through the argument list. If we 613 find -G not followed by a number, we change it into --shared. 614 This will work for most normal cases. */ 615 for (i = 1; i < argc; i++) 616 if (strcmp (argv[i], "-G") == 0 617 && (i + 1 >= argc 618 || ! ISDIGIT (argv[i + 1][0]))) 619 argv[i] = (char *) "--shared"; 620 621 /* Because we permit long options to start with a single dash, and 622 we have a --library option, and the -l option is conventionally 623 used with an immediately following argument, we can have bad 624 results if somebody tries to use -l with a library whose name 625 happens to start with "ibrary", as in -li. We avoid problems by 626 simply turning -l into --library. This means that users will 627 have to use two dashes in order to use --library, which is OK 628 since that's how it is documented. 629 630 FIXME: It's possible that this problem can arise for other short 631 options as well, although the user does always have the recourse 632 of adding a space between the option and the argument. */ 633 for (i = 1; i < argc; i++) 634 { 635 if (argv[i][0] == '-' 636 && argv[i][1] == 'l' 637 && argv[i][2] != '\0') 638 { 639 char *n; 640 641 n = (char *) xmalloc (strlen (argv[i]) + 20); 642 sprintf (n, "--library=%s", argv[i] + 2); 643 argv[i] = n; 644 } 645 } 646 647 last_optind = -1; 648 while (1) 649 { 650 int longind; 651 int optc; 652 static unsigned int defsym_count; 653 654 /* Using last_optind lets us avoid calling ldemul_parse_args 655 multiple times on a single option, which would lead to 656 confusion in the internal static variables maintained by 657 getopt. This could otherwise happen for an argument like 658 -nx, in which the -n is parsed as a single option, and we 659 loop around to pick up the -x. */ 660 if (optind != last_optind) 661 if (ldemul_parse_args (argc, argv)) 662 continue; 663 664 /* getopt_long_only is like getopt_long, but '-' as well as '--' 665 can indicate a long option. */ 666 opterr = 0; 667 last_optind = optind; 668 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 669 if (optc == '?') 670 { 671 optind = last_optind; 672 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 673 } 674 675 if (ldemul_handle_option (optc)) 676 continue; 677 678 if (optc == -1) 679 break; 680 681 switch (optc) 682 { 683 case '?': 684 { 685 /* If the last word on the command line is an option that 686 requires an argument, getopt will refuse to recognise it. 687 Try to catch such options here and issue a more helpful 688 error message than just "unrecognized option". */ 689 int opt; 690 691 for (opt = ARRAY_SIZE (ld_options); opt--;) 692 if (ld_options[opt].opt.has_arg == required_argument 693 /* FIXME: There are a few short options that do not 694 have long equivalents, but which require arguments. 695 We should handle them too. */ 696 && ld_options[opt].opt.name != NULL 697 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 698 { 699 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 700 break; 701 } 702 703 if (opt == -1) 704 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 705 } 706 /* Fall through. */ 707 708 default: 709 einfo (_("%P%F: use the --help option for usage information\n")); 710 711 case 1: /* File name. */ 712 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 713 break; 714 715 case OPTION_IGNORE: 716 break; 717 case 'a': 718 /* For HP/UX compatibility. Actually -a shared should mean 719 ``use only shared libraries'' but, then, we don't 720 currently support shared libraries on HP/UX anyhow. */ 721 if (strcmp (optarg, "archive") == 0) 722 input_flags.dynamic = FALSE; 723 else if (strcmp (optarg, "shared") == 0 724 || strcmp (optarg, "default") == 0) 725 input_flags.dynamic = TRUE; 726 else 727 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 728 break; 729 case OPTION_ASSERT: 730 /* FIXME: We just ignore these, but we should handle them. */ 731 if (strcmp (optarg, "definitions") == 0) 732 ; 733 else if (strcmp (optarg, "nodefinitions") == 0) 734 ; 735 else if (strcmp (optarg, "nosymbolic") == 0) 736 ; 737 else if (strcmp (optarg, "pure-text") == 0) 738 ; 739 else 740 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 741 break; 742 case 'A': 743 ldfile_add_arch (optarg); 744 break; 745 case 'b': 746 lang_add_target (optarg); 747 break; 748 case 'c': 749 ldfile_open_command_file (optarg); 750 parser_input = input_mri_script; 751 yyparse (); 752 break; 753 case OPTION_CALL_SHARED: 754 input_flags.dynamic = TRUE; 755 break; 756 case OPTION_NON_SHARED: 757 input_flags.dynamic = FALSE; 758 break; 759 case OPTION_CREF: 760 command_line.cref = TRUE; 761 link_info.notice_all = TRUE; 762 break; 763 case 'd': 764 command_line.force_common_definition = TRUE; 765 break; 766 case OPTION_DEFSYM: 767 lex_string = optarg; 768 lex_redirect (optarg, "--defsym", ++defsym_count); 769 parser_input = input_defsym; 770 yyparse (); 771 lex_string = NULL; 772 break; 773 case OPTION_DEMANGLE: 774 demangling = TRUE; 775 if (optarg != NULL) 776 { 777 enum demangling_styles style; 778 779 style = cplus_demangle_name_to_style (optarg); 780 if (style == unknown_demangling) 781 einfo (_("%F%P: unknown demangling style `%s'\n"), 782 optarg); 783 784 cplus_demangle_set_style (style); 785 } 786 break; 787 case 'I': /* Used on Solaris. */ 788 case OPTION_DYNAMIC_LINKER: 789 command_line.interpreter = optarg; 790 link_info.nointerp = 0; 791 break; 792 case OPTION_NO_DYNAMIC_LINKER: 793 link_info.nointerp = 1; 794 break; 795 case OPTION_SYSROOT: 796 /* Already handled in ldmain.c. */ 797 break; 798 case OPTION_EB: 799 command_line.endian = ENDIAN_BIG; 800 break; 801 case OPTION_EL: 802 command_line.endian = ENDIAN_LITTLE; 803 break; 804 case OPTION_EMBEDDED_RELOCS: 805 command_line.embedded_relocs = TRUE; 806 break; 807 case OPTION_EXPORT_DYNAMIC: 808 case 'E': /* HP/UX compatibility. */ 809 link_info.export_dynamic = TRUE; 810 break; 811 case OPTION_NO_EXPORT_DYNAMIC: 812 link_info.export_dynamic = FALSE; 813 break; 814 case 'e': 815 lang_add_entry (optarg, TRUE); 816 break; 817 case 'f': 818 if (command_line.auxiliary_filters == NULL) 819 { 820 command_line.auxiliary_filters = (char **) 821 xmalloc (2 * sizeof (char *)); 822 command_line.auxiliary_filters[0] = optarg; 823 command_line.auxiliary_filters[1] = NULL; 824 } 825 else 826 { 827 int c; 828 char **p; 829 830 c = 0; 831 for (p = command_line.auxiliary_filters; *p != NULL; p++) 832 ++c; 833 command_line.auxiliary_filters = (char **) 834 xrealloc (command_line.auxiliary_filters, 835 (c + 2) * sizeof (char *)); 836 command_line.auxiliary_filters[c] = optarg; 837 command_line.auxiliary_filters[c + 1] = NULL; 838 } 839 break; 840 case 'F': 841 command_line.filter_shlib = optarg; 842 break; 843 case OPTION_FORCE_EXE_SUFFIX: 844 command_line.force_exe_suffix = TRUE; 845 break; 846 case 'G': 847 { 848 char *end; 849 g_switch_value = strtoul (optarg, &end, 0); 850 if (*end) 851 einfo (_("%P%F: invalid number `%s'\n"), optarg); 852 } 853 break; 854 case 'g': 855 /* Ignore. */ 856 break; 857 case OPTION_GC_SECTIONS: 858 link_info.gc_sections = TRUE; 859 break; 860 case OPTION_PRINT_GC_SECTIONS: 861 link_info.print_gc_sections = TRUE; 862 break; 863 case OPTION_HELP: 864 help (); 865 xexit (0); 866 break; 867 case 'L': 868 ldfile_add_library_path (optarg, TRUE); 869 break; 870 case 'l': 871 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 872 break; 873 case 'M': 874 config.map_filename = "-"; 875 break; 876 case 'm': 877 /* Ignore. Was handled in a pre-parse. */ 878 break; 879 case OPTION_MAP: 880 config.map_filename = optarg; 881 break; 882 case 'N': 883 config.text_read_only = FALSE; 884 config.magic_demand_paged = FALSE; 885 input_flags.dynamic = FALSE; 886 break; 887 case OPTION_NO_OMAGIC: 888 config.text_read_only = TRUE; 889 config.magic_demand_paged = TRUE; 890 /* NB/ Does not set input_flags.dynamic to TRUE. 891 Use --call-shared or -Bdynamic for this. */ 892 break; 893 case 'n': 894 config.magic_demand_paged = FALSE; 895 input_flags.dynamic = FALSE; 896 break; 897 case OPTION_NO_DEFINE_COMMON: 898 command_line.inhibit_common_definition = TRUE; 899 break; 900 case OPTION_NO_DEMANGLE: 901 demangling = FALSE; 902 break; 903 case OPTION_NO_GC_SECTIONS: 904 link_info.gc_sections = FALSE; 905 break; 906 case OPTION_NO_PRINT_GC_SECTIONS: 907 link_info.print_gc_sections = FALSE; 908 break; 909 case OPTION_NO_KEEP_MEMORY: 910 link_info.keep_memory = FALSE; 911 break; 912 case OPTION_NO_UNDEFINED: 913 link_info.unresolved_syms_in_objects 914 = how_to_report_unresolved_symbols; 915 break; 916 case OPTION_ALLOW_SHLIB_UNDEFINED: 917 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 918 break; 919 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 920 link_info.unresolved_syms_in_shared_libs 921 = how_to_report_unresolved_symbols; 922 break; 923 case OPTION_UNRESOLVED_SYMBOLS: 924 if (strcmp (optarg, "ignore-all") == 0) 925 { 926 link_info.unresolved_syms_in_objects = RM_IGNORE; 927 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 928 } 929 else if (strcmp (optarg, "report-all") == 0) 930 { 931 link_info.unresolved_syms_in_objects 932 = how_to_report_unresolved_symbols; 933 link_info.unresolved_syms_in_shared_libs 934 = how_to_report_unresolved_symbols; 935 } 936 else if (strcmp (optarg, "ignore-in-object-files") == 0) 937 { 938 link_info.unresolved_syms_in_objects = RM_IGNORE; 939 link_info.unresolved_syms_in_shared_libs 940 = how_to_report_unresolved_symbols; 941 } 942 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 943 { 944 link_info.unresolved_syms_in_objects 945 = how_to_report_unresolved_symbols; 946 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 947 } 948 else 949 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 950 break; 951 case OPTION_WARN_UNRESOLVED_SYMBOLS: 952 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 953 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 954 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 955 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 956 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 957 break; 958 959 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 960 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 961 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 962 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 963 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 964 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 965 break; 966 case OPTION_ALLOW_MULTIPLE_DEFINITION: 967 link_info.allow_multiple_definition = TRUE; 968 break; 969 case OPTION_NO_UNDEFINED_VERSION: 970 link_info.allow_undefined_version = FALSE; 971 break; 972 case OPTION_DEFAULT_SYMVER: 973 link_info.create_default_symver = TRUE; 974 break; 975 case OPTION_DEFAULT_IMPORTED_SYMVER: 976 link_info.default_imported_symver = TRUE; 977 break; 978 case OPTION_NO_WARN_MISMATCH: 979 command_line.warn_mismatch = FALSE; 980 break; 981 case OPTION_NO_WARN_SEARCH_MISMATCH: 982 command_line.warn_search_mismatch = FALSE; 983 break; 984 case OPTION_NOINHIBIT_EXEC: 985 force_make_executable = TRUE; 986 break; 987 case OPTION_NOSTDLIB: 988 config.only_cmd_line_lib_dirs = TRUE; 989 break; 990 case OPTION_NO_WHOLE_ARCHIVE: 991 input_flags.whole_archive = FALSE; 992 break; 993 case 'O': 994 /* FIXME "-O<non-digits> <value>" used to set the address of 995 section <non-digits>. Was this for compatibility with 996 something, or can we create a new option to do that 997 (with a syntax similar to -defsym)? 998 getopt can't handle two args to an option without kludges. */ 999 1000 /* Enable optimizations of output files. */ 1001 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1002 break; 1003 case 'o': 1004 lang_add_output (optarg, 0); 1005 break; 1006 case OPTION_OFORMAT: 1007 lang_add_output_format (optarg, NULL, NULL, 0); 1008 break; 1009 case OPTION_PRINT_SYSROOT: 1010 if (*ld_sysroot) 1011 puts (ld_sysroot); 1012 xexit (0); 1013 break; 1014 case OPTION_PRINT_OUTPUT_FORMAT: 1015 command_line.print_output_format = TRUE; 1016 break; 1017 #ifdef ENABLE_PLUGINS 1018 case OPTION_PLUGIN: 1019 plugin_opt_plugin (optarg); 1020 break; 1021 case OPTION_PLUGIN_OPT: 1022 if (plugin_opt_plugin_arg (optarg)) 1023 einfo (_("%P%F: bad -plugin-opt option\n")); 1024 break; 1025 #endif /* ENABLE_PLUGINS */ 1026 case 'q': 1027 link_info.emitrelocations = TRUE; 1028 break; 1029 case 'i': 1030 case 'r': 1031 if (optind == last_optind) 1032 /* This can happen if the user put "-rpath,a" on the command 1033 line. (Or something similar. The comma is important). 1034 Getopt becomes confused and thinks that this is a -r option 1035 but it cannot parse the text after the -r so it refuses to 1036 increment the optind counter. Detect this case and issue 1037 an error message here. We cannot just make this a warning, 1038 increment optind, and continue because getopt is too confused 1039 and will seg-fault the next time around. */ 1040 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]); 1041 1042 if (bfd_link_pic (&link_info)) 1043 einfo (_("%P%F: -r and %s may not be used together\n"), 1044 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1045 1046 link_info.type = type_relocatable; 1047 config.build_constructors = FALSE; 1048 config.magic_demand_paged = FALSE; 1049 config.text_read_only = FALSE; 1050 input_flags.dynamic = FALSE; 1051 break; 1052 case 'R': 1053 /* The GNU linker traditionally uses -R to mean to include 1054 only the symbols from a file. The Solaris linker uses -R 1055 to set the path used by the runtime linker to find 1056 libraries. This is the GNU linker -rpath argument. We 1057 try to support both simultaneously by checking the file 1058 named. If it is a directory, rather than a regular file, 1059 we assume -rpath was meant. */ 1060 { 1061 struct stat s; 1062 1063 if (stat (optarg, &s) >= 0 1064 && ! S_ISDIR (s.st_mode)) 1065 { 1066 lang_add_input_file (optarg, 1067 lang_input_file_is_symbols_only_enum, 1068 NULL); 1069 break; 1070 } 1071 } 1072 /* Fall through. */ 1073 case OPTION_RPATH: 1074 if (command_line.rpath == NULL) 1075 command_line.rpath = xstrdup (optarg); 1076 else 1077 { 1078 size_t rpath_len = strlen (command_line.rpath); 1079 size_t optarg_len = strlen (optarg); 1080 char *buf; 1081 char *cp = command_line.rpath; 1082 1083 /* First see whether OPTARG is already in the path. */ 1084 do 1085 { 1086 if (strncmp (optarg, cp, optarg_len) == 0 1087 && (cp[optarg_len] == 0 1088 || cp[optarg_len] == config.rpath_separator)) 1089 /* We found it. */ 1090 break; 1091 1092 /* Not yet found. */ 1093 cp = strchr (cp, config.rpath_separator); 1094 if (cp != NULL) 1095 ++cp; 1096 } 1097 while (cp != NULL); 1098 1099 if (cp == NULL) 1100 { 1101 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1102 sprintf (buf, "%s%c%s", command_line.rpath, 1103 config.rpath_separator, optarg); 1104 free (command_line.rpath); 1105 command_line.rpath = buf; 1106 } 1107 } 1108 break; 1109 case OPTION_RPATH_LINK: 1110 if (command_line.rpath_link == NULL) 1111 command_line.rpath_link = xstrdup (optarg); 1112 else 1113 { 1114 char *buf; 1115 1116 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1117 + strlen (optarg) 1118 + 2); 1119 sprintf (buf, "%s%c%s", command_line.rpath_link, 1120 config.rpath_separator, optarg); 1121 free (command_line.rpath_link); 1122 command_line.rpath_link = buf; 1123 } 1124 break; 1125 case OPTION_NO_RELAX: 1126 DISABLE_RELAXATION; 1127 break; 1128 case OPTION_RELAX: 1129 ENABLE_RELAXATION; 1130 break; 1131 case OPTION_RETAIN_SYMBOLS_FILE: 1132 add_keepsyms_file (optarg); 1133 break; 1134 case 'S': 1135 link_info.strip = strip_debugger; 1136 break; 1137 case 's': 1138 link_info.strip = strip_all; 1139 break; 1140 case OPTION_STRIP_DISCARDED: 1141 link_info.strip_discarded = TRUE; 1142 break; 1143 case OPTION_NO_STRIP_DISCARDED: 1144 link_info.strip_discarded = FALSE; 1145 break; 1146 case OPTION_SHARED: 1147 if (config.has_shared) 1148 { 1149 if (bfd_link_relocatable (&link_info)) 1150 einfo (_("%P%F: -r and -shared may not be used together\n")); 1151 1152 link_info.type = type_dll; 1153 /* When creating a shared library, the default 1154 behaviour is to ignore any unresolved references. */ 1155 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1156 link_info.unresolved_syms_in_objects = RM_IGNORE; 1157 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1158 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1159 } 1160 else 1161 einfo (_("%P%F: -shared not supported\n")); 1162 break; 1163 case OPTION_PIE: 1164 if (config.has_shared) 1165 { 1166 if (bfd_link_relocatable (&link_info)) 1167 einfo (_("%P%F: -r and -pie may not be used together\n")); 1168 1169 link_info.type = type_pie; 1170 } 1171 else 1172 einfo (_("%P%F: -pie not supported\n")); 1173 break; 1174 case 'h': /* Used on Solaris. */ 1175 case OPTION_SONAME: 1176 if (optarg[0] == '\0' && command_line.soname 1177 && command_line.soname[0]) 1178 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1179 else 1180 command_line.soname = optarg; 1181 break; 1182 case OPTION_SORT_COMMON: 1183 if (optarg == NULL 1184 || strcmp (optarg, N_("descending")) == 0) 1185 config.sort_common = sort_descending; 1186 else if (strcmp (optarg, N_("ascending")) == 0) 1187 config.sort_common = sort_ascending; 1188 else 1189 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1190 optarg); 1191 break; 1192 case OPTION_SORT_SECTION: 1193 if (strcmp (optarg, N_("name")) == 0) 1194 sort_section = by_name; 1195 else if (strcmp (optarg, N_("alignment")) == 0) 1196 sort_section = by_alignment; 1197 else 1198 einfo (_("%P%F: invalid section sorting option: %s\n"), 1199 optarg); 1200 break; 1201 case OPTION_STATS: 1202 config.stats = TRUE; 1203 break; 1204 case OPTION_SYMBOLIC: 1205 command_line.symbolic = symbolic; 1206 break; 1207 case OPTION_SYMBOLIC_FUNCTIONS: 1208 command_line.symbolic = symbolic_functions; 1209 break; 1210 case 't': 1211 trace_files = TRUE; 1212 break; 1213 case 'T': 1214 previous_script_handle = saved_script_handle; 1215 ldfile_open_command_file (optarg); 1216 parser_input = input_script; 1217 yyparse (); 1218 previous_script_handle = NULL; 1219 break; 1220 case OPTION_DEFAULT_SCRIPT: 1221 command_line.default_script = optarg; 1222 break; 1223 case OPTION_SECTION_START: 1224 { 1225 char *optarg2; 1226 char *sec_name; 1227 int len; 1228 1229 /* Check for <something>=<somthing>... */ 1230 optarg2 = strchr (optarg, '='); 1231 if (optarg2 == NULL) 1232 einfo (_("%P%F: invalid argument to option" 1233 " \"--section-start\"\n")); 1234 1235 optarg2++; 1236 1237 /* So far so good. Are all the args present? */ 1238 if ((*optarg == '\0') || (*optarg2 == '\0')) 1239 einfo (_("%P%F: missing argument(s) to option" 1240 " \"--section-start\"\n")); 1241 1242 /* We must copy the section name as set_section_start 1243 doesn't do it for us. */ 1244 len = optarg2 - optarg; 1245 sec_name = (char *) xmalloc (len); 1246 memcpy (sec_name, optarg, len - 1); 1247 sec_name[len - 1] = 0; 1248 1249 /* Then set it... */ 1250 set_section_start (sec_name, optarg2); 1251 } 1252 break; 1253 case OPTION_TARGET_HELP: 1254 /* Mention any target specific options. */ 1255 ldemul_list_emulation_options (stdout); 1256 exit (0); 1257 case OPTION_TBSS: 1258 set_segment_start (".bss", optarg); 1259 break; 1260 case OPTION_TDATA: 1261 set_segment_start (".data", optarg); 1262 break; 1263 case OPTION_TTEXT: 1264 set_segment_start (".text", optarg); 1265 break; 1266 case OPTION_TTEXT_SEGMENT: 1267 set_segment_start (".text-segment", optarg); 1268 break; 1269 case OPTION_TRODATA_SEGMENT: 1270 set_segment_start (".rodata-segment", optarg); 1271 break; 1272 case OPTION_TLDATA_SEGMENT: 1273 set_segment_start (".ldata-segment", optarg); 1274 break; 1275 case OPTION_TRADITIONAL_FORMAT: 1276 link_info.traditional_format = TRUE; 1277 break; 1278 case OPTION_TASK_LINK: 1279 link_info.task_link = TRUE; 1280 /* Fall through - do an implied -r option. */ 1281 case OPTION_UR: 1282 if (bfd_link_pic (&link_info)) 1283 einfo (_("%P%F: -r and %s may not be used together\n"), 1284 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1285 1286 link_info.type = type_relocatable; 1287 config.build_constructors = TRUE; 1288 config.magic_demand_paged = FALSE; 1289 config.text_read_only = FALSE; 1290 input_flags.dynamic = FALSE; 1291 break; 1292 case 'u': 1293 ldlang_add_undef (optarg, TRUE); 1294 break; 1295 case OPTION_REQUIRE_DEFINED_SYMBOL: 1296 ldlang_add_require_defined (optarg); 1297 break; 1298 case OPTION_UNIQUE: 1299 if (optarg != NULL) 1300 lang_add_unique (optarg); 1301 else 1302 config.unique_orphan_sections = TRUE; 1303 break; 1304 case OPTION_VERBOSE: 1305 ldversion (1); 1306 version_printed = TRUE; 1307 verbose = TRUE; 1308 overflow_cutoff_limit = -2; 1309 if (optarg != NULL) 1310 { 1311 char *end; 1312 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1313 if (*end) 1314 einfo (_("%P%F: invalid number `%s'\n"), optarg); 1315 #ifdef ENABLE_PLUGINS 1316 report_plugin_symbols = level > 1; 1317 #endif /* ENABLE_PLUGINS */ 1318 } 1319 break; 1320 case 'v': 1321 ldversion (0); 1322 version_printed = TRUE; 1323 break; 1324 case 'V': 1325 ldversion (1); 1326 version_printed = TRUE; 1327 break; 1328 case OPTION_VERSION: 1329 ldversion (2); 1330 xexit (0); 1331 break; 1332 case OPTION_VERSION_SCRIPT: 1333 /* This option indicates a small script that only specifies 1334 version information. Read it, but don't assume that 1335 we've seen a linker script. */ 1336 { 1337 FILE *hold_script_handle; 1338 1339 hold_script_handle = saved_script_handle; 1340 ldfile_open_command_file (optarg); 1341 saved_script_handle = hold_script_handle; 1342 parser_input = input_version_script; 1343 yyparse (); 1344 } 1345 break; 1346 case OPTION_VERSION_EXPORTS_SECTION: 1347 /* This option records a version symbol to be applied to the 1348 symbols listed for export to be found in the object files 1349 .exports sections. */ 1350 command_line.version_exports_section = optarg; 1351 break; 1352 case OPTION_DYNAMIC_LIST_DATA: 1353 command_line.dynamic_list = dynamic_list_data; 1354 if (command_line.symbolic == symbolic) 1355 command_line.symbolic = symbolic_unset; 1356 break; 1357 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1358 lang_append_dynamic_list_cpp_typeinfo (); 1359 if (command_line.dynamic_list != dynamic_list_data) 1360 command_line.dynamic_list = dynamic_list; 1361 if (command_line.symbolic == symbolic) 1362 command_line.symbolic = symbolic_unset; 1363 break; 1364 case OPTION_DYNAMIC_LIST_CPP_NEW: 1365 lang_append_dynamic_list_cpp_new (); 1366 if (command_line.dynamic_list != dynamic_list_data) 1367 command_line.dynamic_list = dynamic_list; 1368 if (command_line.symbolic == symbolic) 1369 command_line.symbolic = symbolic_unset; 1370 break; 1371 case OPTION_DYNAMIC_LIST: 1372 /* This option indicates a small script that only specifies 1373 a dynamic list. Read it, but don't assume that we've 1374 seen a linker script. */ 1375 { 1376 FILE *hold_script_handle; 1377 1378 hold_script_handle = saved_script_handle; 1379 ldfile_open_command_file (optarg); 1380 saved_script_handle = hold_script_handle; 1381 parser_input = input_dynamic_list; 1382 yyparse (); 1383 } 1384 if (command_line.dynamic_list != dynamic_list_data) 1385 command_line.dynamic_list = dynamic_list; 1386 if (command_line.symbolic == symbolic) 1387 command_line.symbolic = symbolic_unset; 1388 break; 1389 case OPTION_WARN_COMMON: 1390 config.warn_common = TRUE; 1391 break; 1392 case OPTION_WARN_CONSTRUCTORS: 1393 config.warn_constructors = TRUE; 1394 break; 1395 case OPTION_WARN_FATAL: 1396 config.fatal_warnings = TRUE; 1397 break; 1398 case OPTION_NO_WARN_FATAL: 1399 config.fatal_warnings = FALSE; 1400 break; 1401 case OPTION_WARN_MULTIPLE_GP: 1402 config.warn_multiple_gp = TRUE; 1403 break; 1404 case OPTION_WARN_ONCE: 1405 config.warn_once = TRUE; 1406 break; 1407 case OPTION_WARN_SECTION_ALIGN: 1408 config.warn_section_align = TRUE; 1409 break; 1410 case OPTION_WARN_SHARED_TEXTREL: 1411 link_info.warn_shared_textrel = TRUE; 1412 break; 1413 case OPTION_WARN_ALTERNATE_EM: 1414 link_info.warn_alternate_em = TRUE; 1415 break; 1416 case OPTION_WHOLE_ARCHIVE: 1417 input_flags.whole_archive = TRUE; 1418 break; 1419 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1420 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1421 break; 1422 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1423 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1424 break; 1425 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1426 input_flags.add_DT_NEEDED_for_regular = TRUE; 1427 break; 1428 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1429 input_flags.add_DT_NEEDED_for_regular = FALSE; 1430 break; 1431 case OPTION_WRAP: 1432 add_wrap (optarg); 1433 break; 1434 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1435 add_ignoresym (&link_info, optarg); 1436 break; 1437 case OPTION_DISCARD_NONE: 1438 link_info.discard = discard_none; 1439 break; 1440 case 'X': 1441 link_info.discard = discard_l; 1442 break; 1443 case 'x': 1444 link_info.discard = discard_all; 1445 break; 1446 case 'Y': 1447 if (CONST_STRNEQ (optarg, "P,")) 1448 optarg += 2; 1449 if (default_dirlist != NULL) 1450 free (default_dirlist); 1451 default_dirlist = xstrdup (optarg); 1452 break; 1453 case 'y': 1454 add_ysym (optarg); 1455 break; 1456 case OPTION_SPARE_DYNAMIC_TAGS: 1457 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1458 break; 1459 case OPTION_SPLIT_BY_RELOC: 1460 if (optarg != NULL) 1461 config.split_by_reloc = strtoul (optarg, NULL, 0); 1462 else 1463 config.split_by_reloc = 32768; 1464 break; 1465 case OPTION_SPLIT_BY_FILE: 1466 if (optarg != NULL) 1467 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1468 else 1469 config.split_by_file = 1; 1470 break; 1471 case OPTION_CHECK_SECTIONS: 1472 command_line.check_section_addresses = 1; 1473 break; 1474 case OPTION_NO_CHECK_SECTIONS: 1475 command_line.check_section_addresses = 0; 1476 break; 1477 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1478 command_line.accept_unknown_input_arch = TRUE; 1479 break; 1480 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1481 command_line.accept_unknown_input_arch = FALSE; 1482 break; 1483 case '(': 1484 lang_enter_group (); 1485 ingroup++; 1486 break; 1487 case ')': 1488 if (! ingroup) 1489 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1490 1491 lang_leave_group (); 1492 ingroup--; 1493 break; 1494 1495 case OPTION_INIT: 1496 link_info.init_function = optarg; 1497 break; 1498 1499 case OPTION_FINI: 1500 link_info.fini_function = optarg; 1501 break; 1502 1503 case OPTION_REDUCE_MEMORY_OVERHEADS: 1504 link_info.reduce_memory_overheads = TRUE; 1505 if (config.hash_table_size == 0) 1506 config.hash_table_size = 1021; 1507 break; 1508 1509 case OPTION_HASH_SIZE: 1510 { 1511 bfd_size_type new_size; 1512 1513 new_size = strtoul (optarg, NULL, 0); 1514 if (new_size) 1515 config.hash_table_size = new_size; 1516 else 1517 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1518 } 1519 break; 1520 1521 case OPTION_PUSH_STATE: 1522 input_flags.pushed = xmemdup (&input_flags, 1523 sizeof (input_flags), 1524 sizeof (input_flags)); 1525 break; 1526 1527 case OPTION_POP_STATE: 1528 if (input_flags.pushed == NULL) 1529 einfo (_("%P%F: no state pushed before popping\n")); 1530 else 1531 { 1532 struct lang_input_statement_flags *oldp = input_flags.pushed; 1533 memcpy (&input_flags, oldp, sizeof (input_flags)); 1534 free (oldp); 1535 } 1536 break; 1537 1538 case OPTION_PRINT_MEMORY_USAGE: 1539 command_line.print_memory_usage = TRUE; 1540 break; 1541 1542 case OPTION_ORPHAN_HANDLING: 1543 if (strcasecmp (optarg, "place") == 0) 1544 config.orphan_handling = orphan_handling_place; 1545 else if (strcasecmp (optarg, "warn") == 0) 1546 config.orphan_handling = orphan_handling_warn; 1547 else if (strcasecmp (optarg, "error") == 0) 1548 config.orphan_handling = orphan_handling_error; 1549 else if (strcasecmp (optarg, "discard") == 0) 1550 config.orphan_handling = orphan_handling_discard; 1551 else 1552 einfo (_("%P%F: invalid argument to option" 1553 " \"--orphan-handling\"\n")); 1554 break; 1555 } 1556 } 1557 1558 if (command_line.soname && command_line.soname[0] == '\0') 1559 { 1560 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1561 command_line.soname = NULL; 1562 } 1563 1564 while (ingroup) 1565 { 1566 lang_leave_group (); 1567 ingroup--; 1568 } 1569 1570 if (default_dirlist != NULL) 1571 { 1572 set_default_dirlist (default_dirlist); 1573 free (default_dirlist); 1574 } 1575 1576 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1577 /* FIXME: Should we allow emulations a chance to set this ? */ 1578 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1579 1580 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1581 /* FIXME: Should we allow emulations a chance to set this ? */ 1582 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1583 1584 if (bfd_link_relocatable (&link_info) 1585 && command_line.check_section_addresses < 0) 1586 command_line.check_section_addresses = 0; 1587 1588 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1589 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1590 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1591 for shared libraries. -Bsymbolic overrides all others and vice 1592 versa. */ 1593 switch (command_line.symbolic) 1594 { 1595 case symbolic_unset: 1596 break; 1597 case symbolic: 1598 /* -Bsymbolic is for shared library only. */ 1599 if (bfd_link_dll (&link_info)) 1600 { 1601 link_info.symbolic = TRUE; 1602 /* Should we free the unused memory? */ 1603 link_info.dynamic_list = NULL; 1604 command_line.dynamic_list = dynamic_list_unset; 1605 } 1606 break; 1607 case symbolic_functions: 1608 /* -Bsymbolic-functions is for shared library only. */ 1609 if (bfd_link_dll (&link_info)) 1610 command_line.dynamic_list = dynamic_list_data; 1611 break; 1612 } 1613 1614 switch (command_line.dynamic_list) 1615 { 1616 case dynamic_list_unset: 1617 break; 1618 case dynamic_list_data: 1619 link_info.dynamic_data = TRUE; 1620 case dynamic_list: 1621 link_info.dynamic = TRUE; 1622 break; 1623 } 1624 1625 if (!bfd_link_dll (&link_info)) 1626 { 1627 if (command_line.filter_shlib) 1628 einfo (_("%P%F: -F may not be used without -shared\n")); 1629 if (command_line.auxiliary_filters) 1630 einfo (_("%P%F: -f may not be used without -shared\n")); 1631 } 1632 1633 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1634 don't see how else this can be handled, since in this case we 1635 must preserve all externally visible symbols. */ 1636 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1637 { 1638 link_info.strip = strip_debugger; 1639 if (link_info.discard == discard_sec_merge) 1640 link_info.discard = discard_all; 1641 } 1642 } 1643 1644 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1645 library search path. */ 1646 1647 static void 1648 set_default_dirlist (char *dirlist_ptr) 1649 { 1650 char *p; 1651 1652 while (1) 1653 { 1654 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1655 if (p != NULL) 1656 *p = '\0'; 1657 if (*dirlist_ptr != '\0') 1658 ldfile_add_library_path (dirlist_ptr, TRUE); 1659 if (p == NULL) 1660 break; 1661 dirlist_ptr = p + 1; 1662 } 1663 } 1664 1665 static void 1666 set_section_start (char *sect, char *valstr) 1667 { 1668 const char *end; 1669 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1670 if (*end) 1671 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1672 lang_section_start (sect, exp_intop (val), NULL); 1673 } 1674 1675 static void 1676 set_segment_start (const char *section, char *valstr) 1677 { 1678 const char *name; 1679 const char *end; 1680 segment_type *seg; 1681 1682 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1683 if (*end) 1684 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1685 /* If we already have an entry for this segment, update the existing 1686 value. */ 1687 name = section + 1; 1688 for (seg = segments; seg; seg = seg->next) 1689 if (strcmp (seg->name, name) == 0) 1690 { 1691 seg->value = val; 1692 return; 1693 } 1694 /* There was no existing value so we must create a new segment 1695 entry. */ 1696 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1697 seg->name = name; 1698 seg->value = val; 1699 seg->used = FALSE; 1700 /* Add it to the linked list of segments. */ 1701 seg->next = segments; 1702 segments = seg; 1703 /* Historically, -Ttext and friends set the base address of a 1704 particular section. For backwards compatibility, we still do 1705 that. If a SEGMENT_START directive is seen, the section address 1706 assignment will be disabled. */ 1707 lang_section_start (section, exp_intop (val), seg); 1708 } 1709 1710 static void 1711 elf_shlib_list_options (FILE *file) 1712 { 1713 fprintf (file, _("\ 1714 --audit=AUDITLIB Specify a library to use for auditing\n")); 1715 fprintf (file, _("\ 1716 -Bgroup Selects group name lookup rules for DSO\n")); 1717 fprintf (file, _("\ 1718 --disable-new-dtags Disable new dynamic tags\n")); 1719 fprintf (file, _("\ 1720 --enable-new-dtags Enable new dynamic tags\n")); 1721 fprintf (file, _("\ 1722 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1723 fprintf (file, _("\ 1724 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1725 fprintf (file, _("\ 1726 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1727 fprintf (file, _("\ 1728 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1729 Specify a library to use for auditing dependencies\n")); 1730 fprintf (file, _("\ 1731 -z combreloc Merge dynamic relocs into one section and sort\n")); 1732 fprintf (file, _("\ 1733 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1734 fprintf (file, _("\ 1735 -z global Make symbols in DSO available for subsequently\n\ 1736 loaded objects\n")); 1737 fprintf (file, _("\ 1738 -z initfirst Mark DSO to be initialized first at runtime\n")); 1739 fprintf (file, _("\ 1740 -z interpose Mark object to interpose all DSOs but executable\n")); 1741 fprintf (file, _("\ 1742 -z lazy Mark object lazy runtime binding (default)\n")); 1743 fprintf (file, _("\ 1744 -z loadfltr Mark object requiring immediate process\n")); 1745 fprintf (file, _("\ 1746 -z nocopyreloc Don't create copy relocs\n")); 1747 fprintf (file, _("\ 1748 -z nodefaultlib Mark object not to use default search paths\n")); 1749 fprintf (file, _("\ 1750 -z nodelete Mark DSO non-deletable at runtime\n")); 1751 fprintf (file, _("\ 1752 -z nodlopen Mark DSO not available to dlopen\n")); 1753 fprintf (file, _("\ 1754 -z nodump Mark DSO not available to dldump\n")); 1755 fprintf (file, _("\ 1756 -z now Mark object non-lazy runtime binding\n")); 1757 fprintf (file, _("\ 1758 -z origin Mark object requiring immediate $ORIGIN\n\ 1759 processing at runtime\n")); 1760 fprintf (file, _("\ 1761 -z relro Create RELRO program header\n")); 1762 fprintf (file, _("\ 1763 -z norelro Don't create RELRO program header\n")); 1764 fprintf (file, _("\ 1765 -z stacksize=SIZE Set size of stack segment\n")); 1766 fprintf (file, _("\ 1767 -z text Treat DT_TEXTREL in shared object as error\n")); 1768 fprintf (file, _("\ 1769 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1770 fprintf (file, _("\ 1771 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1772 } 1773 1774 static void 1775 elf_static_list_options (FILE *file) 1776 { 1777 fprintf (file, _("\ 1778 --build-id[=STYLE] Generate build ID note\n")); 1779 fprintf (file, _("\ 1780 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1781 Compress DWARF debug sections using zlib\n")); 1782 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1783 fprintf (file, _("\ 1784 Default: zlib-gabi\n")); 1785 #else 1786 fprintf (file, _("\ 1787 Default: none\n")); 1788 #endif 1789 fprintf (file, _("\ 1790 -z common-page-size=SIZE Set common page size to SIZE\n")); 1791 fprintf (file, _("\ 1792 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1793 fprintf (file, _("\ 1794 -z defs Report unresolved symbols in object files.\n")); 1795 fprintf (file, _("\ 1796 -z muldefs Allow multiple definitions\n")); 1797 fprintf (file, _("\ 1798 -z execstack Mark executable as requiring executable stack\n")); 1799 fprintf (file, _("\ 1800 -z noexecstack Mark executable as not requiring executable stack\n")); 1801 } 1802 1803 static void 1804 elf_plt_unwind_list_options (FILE *file) 1805 { 1806 fprintf (file, _("\ 1807 --ld-generated-unwind-info Generate exception handling info for PLT\n\ 1808 --no-ld-generated-unwind-info\n\ 1809 Don't generate exception handling info for PLT\n")); 1810 } 1811 1812 static void 1813 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1814 bfd_boolean plt_unwind) 1815 { 1816 if (!elf) 1817 return; 1818 printf (_("ELF emulations:\n")); 1819 if (plt_unwind) 1820 elf_plt_unwind_list_options (file); 1821 elf_static_list_options (file); 1822 if (shlib) 1823 elf_shlib_list_options (file); 1824 } 1825 1826 1827 /* Print help messages for the options. */ 1829 1830 static void 1831 help (void) 1832 { 1833 unsigned i; 1834 const char **targets, **pp; 1835 int len; 1836 1837 printf (_("Usage: %s [options] file...\n"), program_name); 1838 1839 printf (_("Options:\n")); 1840 for (i = 0; i < OPTION_COUNT; i++) 1841 { 1842 if (ld_options[i].doc != NULL) 1843 { 1844 bfd_boolean comma; 1845 unsigned j; 1846 1847 printf (" "); 1848 1849 comma = FALSE; 1850 len = 2; 1851 1852 j = i; 1853 do 1854 { 1855 if (ld_options[j].shortopt != '\0' 1856 && ld_options[j].control != NO_HELP) 1857 { 1858 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1859 len += (comma ? 2 : 0) + 2; 1860 if (ld_options[j].arg != NULL) 1861 { 1862 if (ld_options[j].opt.has_arg != optional_argument) 1863 { 1864 printf (" "); 1865 ++len; 1866 } 1867 printf ("%s", _(ld_options[j].arg)); 1868 len += strlen (_(ld_options[j].arg)); 1869 } 1870 comma = TRUE; 1871 } 1872 ++j; 1873 } 1874 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1875 1876 j = i; 1877 do 1878 { 1879 if (ld_options[j].opt.name != NULL 1880 && ld_options[j].control != NO_HELP) 1881 { 1882 int two_dashes = 1883 (ld_options[j].control == TWO_DASHES 1884 || ld_options[j].control == EXACTLY_TWO_DASHES); 1885 1886 printf ("%s-%s%s", 1887 comma ? ", " : "", 1888 two_dashes ? "-" : "", 1889 ld_options[j].opt.name); 1890 len += ((comma ? 2 : 0) 1891 + 1 1892 + (two_dashes ? 1 : 0) 1893 + strlen (ld_options[j].opt.name)); 1894 if (ld_options[j].arg != NULL) 1895 { 1896 printf (" %s", _(ld_options[j].arg)); 1897 len += 1 + strlen (_(ld_options[j].arg)); 1898 } 1899 comma = TRUE; 1900 } 1901 ++j; 1902 } 1903 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1904 1905 if (len >= 30) 1906 { 1907 printf ("\n"); 1908 len = 0; 1909 } 1910 1911 for (; len < 30; len++) 1912 putchar (' '); 1913 1914 printf ("%s\n", _(ld_options[i].doc)); 1915 } 1916 } 1917 printf (_(" @FILE")); 1918 for (len = strlen (" @FILE"); len < 30; len++) 1919 putchar (' '); 1920 printf (_("Read options from FILE\n")); 1921 1922 /* Note: Various tools (such as libtool) depend upon the 1923 format of the listings below - do not change them. */ 1924 /* xgettext:c-format */ 1925 printf (_("%s: supported targets:"), program_name); 1926 targets = bfd_target_list (); 1927 for (pp = targets; *pp != NULL; pp++) 1928 printf (" %s", *pp); 1929 free (targets); 1930 printf ("\n"); 1931 1932 /* xgettext:c-format */ 1933 printf (_("%s: supported emulations: "), program_name); 1934 ldemul_list_emulations (stdout); 1935 printf ("\n"); 1936 1937 /* xgettext:c-format */ 1938 printf (_("%s: emulation specific options:\n"), program_name); 1939 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 1940 ELF_PLT_UNWIND_LIST_OPTIONS); 1941 ldemul_list_emulation_options (stdout); 1942 printf ("\n"); 1943 1944 if (REPORT_BUGS_TO[0]) 1945 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1946 } 1947
Indexes created Sun Mar 01 05:31:48 UTC 2026