lexsup.c revision 1.8
1 /* Parse options for the GNU linker. 2 Copyright (C) 1991-2018 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 { {"force-group-allocation", no_argument, NULL, 116 OPTION_FORCE_GROUP_ALLOCATION}, 117 '\0', NULL, N_("Force group members out of groups"), TWO_DASHES }, 118 { {"entry", required_argument, NULL, 'e'}, 119 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 120 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 121 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 122 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC}, 123 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES }, 124 { {"EB", no_argument, NULL, OPTION_EB}, 125 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 126 { {"EL", no_argument, NULL, OPTION_EL}, 127 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 128 { {"auxiliary", required_argument, NULL, 'f'}, 129 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 130 TWO_DASHES }, 131 { {"filter", required_argument, NULL, 'F'}, 132 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 133 TWO_DASHES }, 134 { {NULL, no_argument, NULL, '\0'}, 135 'g', NULL, N_("Ignored"), ONE_DASH }, 136 { {"gpsize", required_argument, NULL, 'G'}, 137 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 138 TWO_DASHES }, 139 { {"soname", required_argument, NULL, OPTION_SONAME}, 140 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 141 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 142 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 143 TWO_DASHES }, 144 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER}, 145 '\0', NULL, N_("Produce an executable with no program interpreter header"), 146 TWO_DASHES }, 147 { {"library", required_argument, NULL, 'l'}, 148 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 149 { {"library-path", required_argument, NULL, 'L'}, 150 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 151 TWO_DASHES }, 152 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 153 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 154 { {NULL, required_argument, NULL, '\0'}, 155 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 156 { {"print-map", no_argument, NULL, 'M'}, 157 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 158 { {"nmagic", no_argument, NULL, 'n'}, 159 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 160 { {"omagic", no_argument, NULL, 'N'}, 161 'N', NULL, N_("Do not page align data, do not make text readonly"), 162 EXACTLY_TWO_DASHES }, 163 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 164 '\0', NULL, N_("Page align data, make text readonly"), 165 EXACTLY_TWO_DASHES }, 166 { {"output", required_argument, NULL, 'o'}, 167 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 168 { {NULL, required_argument, NULL, '\0'}, 169 'O', NULL, N_("Optimize output file"), ONE_DASH }, 170 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB}, 171 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES }, 172 #ifdef ENABLE_PLUGINS 173 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 174 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 175 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 176 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 177 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 178 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 179 ONE_DASH }, 180 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 181 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 182 ONE_DASH }, 183 #endif /* ENABLE_PLUGINS */ 184 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 185 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 186 ONE_DASH }, 187 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 188 '\0', NULL, N_("Ignored for gold option compatibility"), 189 TWO_DASHES }, 190 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 191 '\0', NULL, N_("Ignored for gold option compatibility"), 192 TWO_DASHES }, 193 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 194 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 195 { {"emit-relocs", no_argument, NULL, 'q'}, 196 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 197 { {"relocatable", no_argument, NULL, 'r'}, 198 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 199 { {NULL, no_argument, NULL, '\0'}, 200 'i', NULL, NULL, ONE_DASH }, 201 { {"just-symbols", required_argument, NULL, 'R'}, 202 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 203 TWO_DASHES }, 204 { {"strip-all", no_argument, NULL, 's'}, 205 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 206 { {"strip-debug", no_argument, NULL, 'S'}, 207 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 208 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 209 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 210 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 211 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 212 { {"trace", no_argument, NULL, 't'}, 213 't', NULL, N_("Trace file opens"), TWO_DASHES }, 214 { {"script", required_argument, NULL, 'T'}, 215 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 216 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 217 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 218 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 219 '\0', NULL, NULL, ONE_DASH }, 220 { {"undefined", required_argument, NULL, 'u'}, 221 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 222 TWO_DASHES }, 223 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, 224 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), 225 TWO_DASHES }, 226 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 227 '\0', N_("[=SECTION]"), 228 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 229 { {"Ur", no_argument, NULL, OPTION_UR}, 230 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 231 { {"version", no_argument, NULL, OPTION_VERSION}, 232 'v', NULL, N_("Print version information"), TWO_DASHES }, 233 { {NULL, no_argument, NULL, '\0'}, 234 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 235 { {"discard-all", no_argument, NULL, 'x'}, 236 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 237 { {"discard-locals", no_argument, NULL, 'X'}, 238 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 239 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 240 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 241 { {"trace-symbol", required_argument, NULL, 'y'}, 242 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 243 { {NULL, required_argument, NULL, '\0'}, 244 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 245 ONE_DASH }, 246 { {"start-group", no_argument, NULL, '('}, 247 '(', NULL, N_("Start a group"), TWO_DASHES }, 248 { {"end-group", no_argument, NULL, ')'}, 249 ')', NULL, N_("End a group"), TWO_DASHES }, 250 { {"accept-unknown-input-arch", no_argument, NULL, 251 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 252 '\0', NULL, 253 N_("Accept input files whose architecture cannot be determined"), 254 TWO_DASHES }, 255 { {"no-accept-unknown-input-arch", no_argument, NULL, 256 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 257 '\0', NULL, N_("Reject input files whose architecture is unknown"), 258 TWO_DASHES }, 259 260 /* The next two options are deprecated because of their similarity to 261 --as-needed and --no-as-needed. They have been replaced by 262 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 263 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 264 '\0', NULL, NULL, NO_HELP }, 265 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 266 '\0', NULL, NULL, NO_HELP }, 267 268 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 269 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 270 TWO_DASHES }, 271 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 272 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 273 " the command line"), 274 TWO_DASHES }, 275 { {"assert", required_argument, NULL, OPTION_ASSERT}, 276 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 277 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 278 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 279 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 280 '\0', NULL, NULL, ONE_DASH }, 281 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 282 '\0', NULL, NULL, ONE_DASH }, 283 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 284 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 285 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 286 '\0', NULL, NULL, ONE_DASH }, 287 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 288 '\0', NULL, NULL, ONE_DASH }, 289 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 290 '\0', NULL, NULL, ONE_DASH }, 291 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 292 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 293 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 294 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 295 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 296 '\0', NULL, N_("Check section addresses for overlaps (default)"), 297 TWO_DASHES }, 298 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 299 '\0', NULL, N_("Do not check section addresses for overlaps"), 300 TWO_DASHES }, 301 { {"copy-dt-needed-entries", no_argument, NULL, 302 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 303 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 304 TWO_DASHES }, 305 { {"no-copy-dt-needed-entries", no_argument, NULL, 306 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 307 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 308 TWO_DASHES }, 309 310 { {"cref", no_argument, NULL, OPTION_CREF}, 311 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 312 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 313 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 314 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 315 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 316 TWO_DASHES }, 317 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 318 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 319 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 320 '\0', NULL, N_("Treat warnings as errors"), 321 TWO_DASHES }, 322 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 323 '\0', NULL, N_("Do not treat warnings as errors (default)"), 324 TWO_DASHES }, 325 { {"fini", required_argument, NULL, OPTION_FINI}, 326 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 327 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 328 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 329 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 330 '\0', NULL, N_("Remove unused sections (on some targets)"), 331 TWO_DASHES }, 332 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 333 '\0', NULL, N_("Don't remove unused sections (default)"), 334 TWO_DASHES }, 335 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 336 '\0', NULL, N_("List removed unused sections on stderr"), 337 TWO_DASHES }, 338 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 339 '\0', NULL, N_("Do not list removed unused sections"), 340 TWO_DASHES }, 341 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED}, 342 '\0', NULL, N_("Keep exported symbols when removing unused sections"), 343 TWO_DASHES }, 344 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 345 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 346 TWO_DASHES }, 347 { {"help", no_argument, NULL, OPTION_HELP}, 348 '\0', NULL, N_("Print option help"), TWO_DASHES }, 349 { {"init", required_argument, NULL, OPTION_INIT}, 350 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 351 { {"Map", required_argument, NULL, OPTION_MAP}, 352 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 353 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 354 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 355 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 356 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 357 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 358 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 359 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 360 '\0', NULL, N_("Do not allow unresolved references in object files"), 361 TWO_DASHES }, 362 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 363 '\0', NULL, N_("Allow unresolved references in shared libraries"), 364 TWO_DASHES }, 365 { {"no-allow-shlib-undefined", no_argument, NULL, 366 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 367 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 368 TWO_DASHES }, 369 { {"allow-multiple-definition", no_argument, NULL, 370 OPTION_ALLOW_MULTIPLE_DEFINITION}, 371 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 372 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 373 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 374 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 375 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 376 { {"default-imported-symver", no_argument, NULL, 377 OPTION_DEFAULT_IMPORTED_SYMVER}, 378 '\0', NULL, N_("Create default symbol version for imported symbols"), 379 TWO_DASHES }, 380 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 381 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 382 { {"no-warn-search-mismatch", no_argument, NULL, 383 OPTION_NO_WARN_SEARCH_MISMATCH}, 384 '\0', NULL, N_("Don't warn on finding an incompatible library"), 385 TWO_DASHES}, 386 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 387 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 388 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 389 '\0', NULL, N_("Create an output file even if errors occur"), 390 TWO_DASHES }, 391 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 392 '\0', NULL, NULL, NO_HELP }, 393 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 394 '\0', NULL, N_("Only use library directories specified on\n" 395 " the command line"), 396 ONE_DASH }, 397 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 398 '\0', N_("TARGET"), N_("Specify target of output file"), 399 EXACTLY_TWO_DASHES }, 400 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 401 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 402 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 403 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 404 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 405 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 406 { {"reduce-memory-overheads", no_argument, NULL, 407 OPTION_REDUCE_MEMORY_OVERHEADS}, 408 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 409 TWO_DASHES }, 410 { {"relax", no_argument, NULL, OPTION_RELAX}, 411 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 412 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 413 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 414 { {"retain-symbols-file", required_argument, NULL, 415 OPTION_RETAIN_SYMBOLS_FILE}, 416 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 417 { {"rpath", required_argument, NULL, OPTION_RPATH}, 418 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 419 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 420 '\0', N_("PATH"), N_("Set link time shared library search path"), 421 ONE_DASH }, 422 { {"shared", no_argument, NULL, OPTION_SHARED}, 423 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 424 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD, NetBSD. */ 425 '\0', NULL, NULL, ONE_DASH }, 426 { {"pie", no_argument, NULL, OPTION_PIE}, 427 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 428 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 429 '\0', NULL, NULL, TWO_DASHES }, 430 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 431 '\0', N_("[=ascending|descending]"), 432 N_("Sort common symbols by alignment [in specified order]"), 433 TWO_DASHES }, 434 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 435 '\0', NULL, NULL, NO_HELP }, 436 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 437 '\0', N_("name|alignment"), 438 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 439 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 440 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 441 TWO_DASHES }, 442 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 443 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 444 TWO_DASHES }, 445 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 446 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 447 TWO_DASHES }, 448 { {"stats", no_argument, NULL, OPTION_STATS}, 449 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 450 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 451 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 452 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 453 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 454 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 455 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 456 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 457 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 458 TWO_DASHES }, 459 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 460 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 461 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 462 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 463 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 464 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 465 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 466 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 467 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 468 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 469 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 470 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 471 { {"unresolved-symbols=<method>", required_argument, NULL, 472 OPTION_UNRESOLVED_SYMBOLS}, 473 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 474 " ignore-all, report-all, ignore-in-object-files,\n" 475 " ignore-in-shared-libs"), 476 TWO_DASHES }, 477 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 478 '\0', N_("[=NUMBER]"), 479 N_("Output lots of information during link"), TWO_DASHES }, 480 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 481 '\0', NULL, NULL, NO_HELP }, 482 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 483 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 484 { {"version-exports-section", required_argument, NULL, 485 OPTION_VERSION_EXPORTS_SECTION }, 486 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 487 " SYMBOL as the version."), 488 TWO_DASHES }, 489 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 490 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 491 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 492 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 493 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 494 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 495 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 496 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 497 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 498 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 499 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 500 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 501 TWO_DASHES }, 502 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 503 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 504 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 505 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 506 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 507 '\0', NULL, N_("Warn if start of section changes due to alignment"), 508 TWO_DASHES }, 509 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 510 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 511 TWO_DASHES }, 512 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 513 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 514 TWO_DASHES }, 515 { {"warn-unresolved-symbols", no_argument, NULL, 516 OPTION_WARN_UNRESOLVED_SYMBOLS}, 517 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 518 { {"error-unresolved-symbols", no_argument, NULL, 519 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 520 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 521 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 522 '\0', NULL, N_("Include all objects from following archives"), 523 TWO_DASHES }, 524 { {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 525 '\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */ 526 { {"wrap", required_argument, NULL, OPTION_WRAP}, 527 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 528 { {"ignore-unresolved-symbol", required_argument, NULL, 529 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 530 '\0', N_("SYMBOL"), 531 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 532 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 533 '\0', NULL, N_("Push state of flags governing input file handling"), 534 TWO_DASHES }, 535 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 536 '\0', NULL, N_("Pop state of flags governing input file handling"), 537 TWO_DASHES }, 538 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 539 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 540 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 541 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 542 TWO_DASHES }, 543 }; 544 545 #define OPTION_COUNT ARRAY_SIZE (ld_options) 546 547 void 548 parse_args (unsigned argc, char **argv) 549 { 550 unsigned i; 551 int is, il, irl; 552 int ingroup = 0; 553 char *default_dirlist = NULL; 554 char *shortopts; 555 struct option *longopts; 556 struct option *really_longopts; 557 int last_optind; 558 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 559 560 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 561 longopts = (struct option *) 562 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 563 really_longopts = (struct option *) 564 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 565 566 /* Starting the short option string with '-' is for programs that 567 expect options and other ARGV-elements in any order and that care about 568 the ordering of the two. We describe each non-option ARGV-element 569 as if it were the argument of an option with character code 1. */ 570 shortopts[0] = '-'; 571 is = 1; 572 il = 0; 573 irl = 0; 574 for (i = 0; i < OPTION_COUNT; i++) 575 { 576 if (ld_options[i].shortopt != '\0') 577 { 578 shortopts[is] = ld_options[i].shortopt; 579 ++is; 580 if (ld_options[i].opt.has_arg == required_argument 581 || ld_options[i].opt.has_arg == optional_argument) 582 { 583 shortopts[is] = ':'; 584 ++is; 585 if (ld_options[i].opt.has_arg == optional_argument) 586 { 587 shortopts[is] = ':'; 588 ++is; 589 } 590 } 591 } 592 if (ld_options[i].opt.name != NULL) 593 { 594 if (ld_options[i].control == EXACTLY_TWO_DASHES) 595 { 596 really_longopts[irl] = ld_options[i].opt; 597 ++irl; 598 } 599 else 600 { 601 longopts[il] = ld_options[i].opt; 602 ++il; 603 } 604 } 605 } 606 shortopts[is] = '\0'; 607 longopts[il].name = NULL; 608 really_longopts[irl].name = NULL; 609 610 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 611 612 /* The -G option is ambiguous on different platforms. Sometimes it 613 specifies the largest data size to put into the small data 614 section. Sometimes it is equivalent to --shared. Unfortunately, 615 the first form takes an argument, while the second does not. 616 617 We need to permit the --shared form because on some platforms, 618 such as Solaris, gcc -shared will pass -G to the linker. 619 620 To permit either usage, we look through the argument list. If we 621 find -G not followed by a number, we change it into --shared. 622 This will work for most normal cases. */ 623 for (i = 1; i < argc; i++) 624 if (strcmp (argv[i], "-G") == 0 625 && (i + 1 >= argc 626 || ! ISDIGIT (argv[i + 1][0]))) 627 argv[i] = (char *) "--shared"; 628 629 /* Because we permit long options to start with a single dash, and 630 we have a --library option, and the -l option is conventionally 631 used with an immediately following argument, we can have bad 632 results if somebody tries to use -l with a library whose name 633 happens to start with "ibrary", as in -li. We avoid problems by 634 simply turning -l into --library. This means that users will 635 have to use two dashes in order to use --library, which is OK 636 since that's how it is documented. 637 638 FIXME: It's possible that this problem can arise for other short 639 options as well, although the user does always have the recourse 640 of adding a space between the option and the argument. */ 641 for (i = 1; i < argc; i++) 642 { 643 if (argv[i][0] == '-' 644 && argv[i][1] == 'l' 645 && argv[i][2] != '\0') 646 { 647 char *n; 648 649 n = (char *) xmalloc (strlen (argv[i]) + 20); 650 sprintf (n, "--library=%s", argv[i] + 2); 651 argv[i] = n; 652 } 653 } 654 655 last_optind = -1; 656 while (1) 657 { 658 int longind; 659 int optc; 660 static unsigned int defsym_count; 661 662 /* Using last_optind lets us avoid calling ldemul_parse_args 663 multiple times on a single option, which would lead to 664 confusion in the internal static variables maintained by 665 getopt. This could otherwise happen for an argument like 666 -nx, in which the -n is parsed as a single option, and we 667 loop around to pick up the -x. */ 668 if (optind != last_optind) 669 if (ldemul_parse_args (argc, argv)) 670 continue; 671 672 /* getopt_long_only is like getopt_long, but '-' as well as '--' 673 can indicate a long option. */ 674 opterr = 0; 675 last_optind = optind; 676 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 677 if (optc == '?') 678 { 679 optind = last_optind; 680 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 681 } 682 683 if (ldemul_handle_option (optc)) 684 continue; 685 686 if (optc == -1) 687 break; 688 689 switch (optc) 690 { 691 case '?': 692 { 693 /* If the last word on the command line is an option that 694 requires an argument, getopt will refuse to recognise it. 695 Try to catch such options here and issue a more helpful 696 error message than just "unrecognized option". */ 697 int opt; 698 699 for (opt = ARRAY_SIZE (ld_options); opt--;) 700 if (ld_options[opt].opt.has_arg == required_argument 701 /* FIXME: There are a few short options that do not 702 have long equivalents, but which require arguments. 703 We should handle them too. */ 704 && ld_options[opt].opt.name != NULL 705 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 706 { 707 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 708 break; 709 } 710 711 if (opt == -1) 712 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 713 } 714 /* Fall through. */ 715 716 default: 717 einfo (_("%P%F: use the --help option for usage information\n")); 718 break; 719 720 case 1: /* File name. */ 721 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 722 break; 723 724 case OPTION_IGNORE: 725 break; 726 case 'a': 727 /* For HP/UX compatibility. Actually -a shared should mean 728 ``use only shared libraries'' but, then, we don't 729 currently support shared libraries on HP/UX anyhow. */ 730 if (strcmp (optarg, "archive") == 0) 731 input_flags.dynamic = FALSE; 732 else if (strcmp (optarg, "shared") == 0 733 || strcmp (optarg, "default") == 0) 734 input_flags.dynamic = TRUE; 735 else 736 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 737 break; 738 case OPTION_ASSERT: 739 /* FIXME: We just ignore these, but we should handle them. */ 740 if (strcmp (optarg, "definitions") == 0) 741 ; 742 else if (strcmp (optarg, "nodefinitions") == 0) 743 ; 744 else if (strcmp (optarg, "nosymbolic") == 0) 745 ; 746 else if (strcmp (optarg, "pure-text") == 0) 747 ; 748 else 749 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 750 break; 751 case 'A': 752 ldfile_add_arch (optarg); 753 break; 754 case 'b': 755 lang_add_target (optarg); 756 break; 757 case 'c': 758 ldfile_open_command_file (optarg); 759 parser_input = input_mri_script; 760 yyparse (); 761 break; 762 case OPTION_CALL_SHARED: 763 input_flags.dynamic = TRUE; 764 break; 765 case OPTION_NON_SHARED: 766 input_flags.dynamic = FALSE; 767 break; 768 case OPTION_CREF: 769 command_line.cref = TRUE; 770 link_info.notice_all = TRUE; 771 break; 772 case 'd': 773 command_line.force_common_definition = TRUE; 774 break; 775 case OPTION_FORCE_GROUP_ALLOCATION: 776 command_line.force_group_allocation = TRUE; 777 break; 778 case OPTION_DEFSYM: 779 lex_string = optarg; 780 lex_redirect (optarg, "--defsym", ++defsym_count); 781 parser_input = input_defsym; 782 yyparse (); 783 lex_string = NULL; 784 break; 785 case OPTION_DEMANGLE: 786 demangling = TRUE; 787 if (optarg != NULL) 788 { 789 enum demangling_styles style; 790 791 style = cplus_demangle_name_to_style (optarg); 792 if (style == unknown_demangling) 793 einfo (_("%F%P: unknown demangling style `%s'\n"), 794 optarg); 795 796 cplus_demangle_set_style (style); 797 } 798 break; 799 case 'I': /* Used on Solaris. */ 800 case OPTION_DYNAMIC_LINKER: 801 command_line.interpreter = optarg; 802 link_info.nointerp = 0; 803 break; 804 case OPTION_NO_DYNAMIC_LINKER: 805 link_info.nointerp = 1; 806 break; 807 case OPTION_SYSROOT: 808 /* Already handled in ldmain.c. */ 809 break; 810 case OPTION_EB: 811 command_line.endian = ENDIAN_BIG; 812 break; 813 case OPTION_EL: 814 command_line.endian = ENDIAN_LITTLE; 815 break; 816 case OPTION_EMBEDDED_RELOCS: 817 command_line.embedded_relocs = TRUE; 818 break; 819 case OPTION_EXPORT_DYNAMIC: 820 case 'E': /* HP/UX compatibility. */ 821 link_info.export_dynamic = TRUE; 822 break; 823 case OPTION_NO_EXPORT_DYNAMIC: 824 link_info.export_dynamic = FALSE; 825 break; 826 case 'e': 827 lang_add_entry (optarg, TRUE); 828 break; 829 case 'f': 830 if (command_line.auxiliary_filters == NULL) 831 { 832 command_line.auxiliary_filters = (char **) 833 xmalloc (2 * sizeof (char *)); 834 command_line.auxiliary_filters[0] = optarg; 835 command_line.auxiliary_filters[1] = NULL; 836 } 837 else 838 { 839 int c; 840 char **p; 841 842 c = 0; 843 for (p = command_line.auxiliary_filters; *p != NULL; p++) 844 ++c; 845 command_line.auxiliary_filters = (char **) 846 xrealloc (command_line.auxiliary_filters, 847 (c + 2) * sizeof (char *)); 848 command_line.auxiliary_filters[c] = optarg; 849 command_line.auxiliary_filters[c + 1] = NULL; 850 } 851 break; 852 case 'F': 853 command_line.filter_shlib = optarg; 854 break; 855 case OPTION_FORCE_EXE_SUFFIX: 856 command_line.force_exe_suffix = TRUE; 857 break; 858 case 'G': 859 { 860 char *end; 861 g_switch_value = strtoul (optarg, &end, 0); 862 if (*end) 863 einfo (_("%P%F: invalid number `%s'\n"), optarg); 864 } 865 break; 866 case 'g': 867 /* Ignore. */ 868 break; 869 case OPTION_GC_SECTIONS: 870 link_info.gc_sections = TRUE; 871 break; 872 case OPTION_PRINT_GC_SECTIONS: 873 link_info.print_gc_sections = TRUE; 874 break; 875 case OPTION_GC_KEEP_EXPORTED: 876 link_info.gc_keep_exported = TRUE; 877 break; 878 case OPTION_HELP: 879 help (); 880 xexit (0); 881 break; 882 case 'L': 883 ldfile_add_library_path (optarg, TRUE); 884 break; 885 case 'l': 886 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 887 break; 888 case 'M': 889 config.map_filename = "-"; 890 break; 891 case 'm': 892 /* Ignore. Was handled in a pre-parse. */ 893 break; 894 case OPTION_MAP: 895 config.map_filename = optarg; 896 break; 897 case 'N': 898 config.text_read_only = FALSE; 899 config.magic_demand_paged = FALSE; 900 input_flags.dynamic = FALSE; 901 break; 902 case OPTION_NO_OMAGIC: 903 config.text_read_only = TRUE; 904 config.magic_demand_paged = TRUE; 905 /* NB/ Does not set input_flags.dynamic to TRUE. 906 Use --call-shared or -Bdynamic for this. */ 907 break; 908 case 'n': 909 config.magic_demand_paged = FALSE; 910 input_flags.dynamic = FALSE; 911 break; 912 case OPTION_NO_DEFINE_COMMON: 913 link_info.inhibit_common_definition = TRUE; 914 break; 915 case OPTION_NO_DEMANGLE: 916 demangling = FALSE; 917 break; 918 case OPTION_NO_GC_SECTIONS: 919 link_info.gc_sections = FALSE; 920 break; 921 case OPTION_NO_PRINT_GC_SECTIONS: 922 link_info.print_gc_sections = FALSE; 923 break; 924 case OPTION_NO_KEEP_MEMORY: 925 link_info.keep_memory = FALSE; 926 break; 927 case OPTION_NO_UNDEFINED: 928 link_info.unresolved_syms_in_objects 929 = how_to_report_unresolved_symbols; 930 break; 931 case OPTION_ALLOW_SHLIB_UNDEFINED: 932 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 933 break; 934 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 935 link_info.unresolved_syms_in_shared_libs 936 = how_to_report_unresolved_symbols; 937 break; 938 case OPTION_UNRESOLVED_SYMBOLS: 939 if (strcmp (optarg, "ignore-all") == 0) 940 { 941 link_info.unresolved_syms_in_objects = RM_IGNORE; 942 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 943 } 944 else if (strcmp (optarg, "report-all") == 0) 945 { 946 link_info.unresolved_syms_in_objects 947 = how_to_report_unresolved_symbols; 948 link_info.unresolved_syms_in_shared_libs 949 = how_to_report_unresolved_symbols; 950 } 951 else if (strcmp (optarg, "ignore-in-object-files") == 0) 952 { 953 link_info.unresolved_syms_in_objects = RM_IGNORE; 954 link_info.unresolved_syms_in_shared_libs 955 = how_to_report_unresolved_symbols; 956 } 957 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 958 { 959 link_info.unresolved_syms_in_objects 960 = how_to_report_unresolved_symbols; 961 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 962 } 963 else 964 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 965 break; 966 case OPTION_WARN_UNRESOLVED_SYMBOLS: 967 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 968 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 969 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 970 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 971 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 972 break; 973 974 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 975 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 976 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 977 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 978 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 979 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 980 break; 981 case OPTION_ALLOW_MULTIPLE_DEFINITION: 982 link_info.allow_multiple_definition = TRUE; 983 break; 984 case OPTION_NO_UNDEFINED_VERSION: 985 link_info.allow_undefined_version = FALSE; 986 break; 987 case OPTION_DEFAULT_SYMVER: 988 link_info.create_default_symver = TRUE; 989 break; 990 case OPTION_DEFAULT_IMPORTED_SYMVER: 991 link_info.default_imported_symver = TRUE; 992 break; 993 case OPTION_NO_WARN_MISMATCH: 994 command_line.warn_mismatch = FALSE; 995 break; 996 case OPTION_NO_WARN_SEARCH_MISMATCH: 997 command_line.warn_search_mismatch = FALSE; 998 break; 999 case OPTION_NOINHIBIT_EXEC: 1000 force_make_executable = TRUE; 1001 break; 1002 case OPTION_NOSTDLIB: 1003 config.only_cmd_line_lib_dirs = TRUE; 1004 break; 1005 case OPTION_NO_WHOLE_ARCHIVE: 1006 input_flags.whole_archive = FALSE; 1007 break; 1008 case 'O': 1009 /* FIXME "-O<non-digits> <value>" used to set the address of 1010 section <non-digits>. Was this for compatibility with 1011 something, or can we create a new option to do that 1012 (with a syntax similar to -defsym)? 1013 getopt can't handle two args to an option without kludges. */ 1014 1015 /* Enable optimizations of output files. */ 1016 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1017 break; 1018 case 'o': 1019 lang_add_output (optarg, 0); 1020 break; 1021 case OPTION_OFORMAT: 1022 lang_add_output_format (optarg, NULL, NULL, 0); 1023 break; 1024 case OPTION_OUT_IMPLIB: 1025 command_line.out_implib_filename = xstrdup (optarg); 1026 break; 1027 case OPTION_PRINT_SYSROOT: 1028 if (*ld_sysroot) 1029 puts (ld_sysroot); 1030 xexit (0); 1031 break; 1032 case OPTION_PRINT_OUTPUT_FORMAT: 1033 command_line.print_output_format = TRUE; 1034 break; 1035 #ifdef ENABLE_PLUGINS 1036 case OPTION_PLUGIN: 1037 plugin_opt_plugin (optarg); 1038 break; 1039 case OPTION_PLUGIN_OPT: 1040 if (plugin_opt_plugin_arg (optarg)) 1041 einfo (_("%P%F: bad -plugin-opt option\n")); 1042 break; 1043 #endif /* ENABLE_PLUGINS */ 1044 case 'q': 1045 link_info.emitrelocations = TRUE; 1046 break; 1047 case 'i': 1048 case 'r': 1049 if (optind == last_optind) 1050 /* This can happen if the user put "-rpath,a" on the command 1051 line. (Or something similar. The comma is important). 1052 Getopt becomes confused and thinks that this is a -r option 1053 but it cannot parse the text after the -r so it refuses to 1054 increment the optind counter. Detect this case and issue 1055 an error message here. We cannot just make this a warning, 1056 increment optind, and continue because getopt is too confused 1057 and will seg-fault the next time around. */ 1058 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]); 1059 1060 if (bfd_link_pic (&link_info)) 1061 einfo (_("%P%F: -r and %s may not be used together\n"), 1062 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1063 1064 link_info.type = type_relocatable; 1065 config.build_constructors = FALSE; 1066 config.magic_demand_paged = FALSE; 1067 config.text_read_only = FALSE; 1068 input_flags.dynamic = FALSE; 1069 break; 1070 case 'R': 1071 /* The GNU linker traditionally uses -R to mean to include 1072 only the symbols from a file. The Solaris linker uses -R 1073 to set the path used by the runtime linker to find 1074 libraries. This is the GNU linker -rpath argument. We 1075 try to support both simultaneously by checking the file 1076 named. If it is a directory, rather than a regular file, 1077 we assume -rpath was meant. */ 1078 { 1079 struct stat s; 1080 1081 if (stat (optarg, &s) >= 0 1082 && ! S_ISDIR (s.st_mode)) 1083 { 1084 lang_add_input_file (optarg, 1085 lang_input_file_is_symbols_only_enum, 1086 NULL); 1087 break; 1088 } 1089 } 1090 /* Fall through. */ 1091 case OPTION_RPATH: 1092 if (command_line.rpath == NULL) 1093 command_line.rpath = xstrdup (optarg); 1094 else 1095 { 1096 size_t rpath_len = strlen (command_line.rpath); 1097 size_t optarg_len = strlen (optarg); 1098 char *buf; 1099 char *cp = command_line.rpath; 1100 1101 /* First see whether OPTARG is already in the path. */ 1102 do 1103 { 1104 if (strncmp (optarg, cp, optarg_len) == 0 1105 && (cp[optarg_len] == 0 1106 || cp[optarg_len] == config.rpath_separator)) 1107 /* We found it. */ 1108 break; 1109 1110 /* Not yet found. */ 1111 cp = strchr (cp, config.rpath_separator); 1112 if (cp != NULL) 1113 ++cp; 1114 } 1115 while (cp != NULL); 1116 1117 if (cp == NULL) 1118 { 1119 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1120 sprintf (buf, "%s%c%s", command_line.rpath, 1121 config.rpath_separator, optarg); 1122 free (command_line.rpath); 1123 command_line.rpath = buf; 1124 } 1125 } 1126 break; 1127 case OPTION_RPATH_LINK: 1128 if (command_line.rpath_link == NULL) 1129 command_line.rpath_link = xstrdup (optarg); 1130 else 1131 { 1132 char *buf; 1133 1134 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1135 + strlen (optarg) 1136 + 2); 1137 sprintf (buf, "%s%c%s", command_line.rpath_link, 1138 config.rpath_separator, optarg); 1139 free (command_line.rpath_link); 1140 command_line.rpath_link = buf; 1141 } 1142 break; 1143 case OPTION_NO_RELAX: 1144 DISABLE_RELAXATION; 1145 break; 1146 case OPTION_RELAX: 1147 ENABLE_RELAXATION; 1148 break; 1149 case OPTION_RETAIN_SYMBOLS_FILE: 1150 add_keepsyms_file (optarg); 1151 break; 1152 case 'S': 1153 link_info.strip = strip_debugger; 1154 break; 1155 case 's': 1156 link_info.strip = strip_all; 1157 break; 1158 case OPTION_STRIP_DISCARDED: 1159 link_info.strip_discarded = TRUE; 1160 break; 1161 case OPTION_NO_STRIP_DISCARDED: 1162 link_info.strip_discarded = FALSE; 1163 break; 1164 case OPTION_SHARED: 1165 if (config.has_shared) 1166 { 1167 if (bfd_link_relocatable (&link_info)) 1168 einfo (_("%P%F: -r and -shared may not be used together\n")); 1169 1170 link_info.type = type_dll; 1171 /* When creating a shared library, the default 1172 behaviour is to ignore any unresolved references. */ 1173 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1174 link_info.unresolved_syms_in_objects = RM_IGNORE; 1175 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1176 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1177 } 1178 else 1179 einfo (_("%P%F: -shared not supported\n")); 1180 break; 1181 case OPTION_PIE: 1182 if (config.has_shared) 1183 { 1184 if (bfd_link_relocatable (&link_info)) 1185 einfo (_("%P%F: -r and -pie may not be used together\n")); 1186 1187 link_info.type = type_pie; 1188 } 1189 else 1190 einfo (_("%P%F: -pie not supported\n")); 1191 break; 1192 case 'h': /* Used on Solaris. */ 1193 case OPTION_SONAME: 1194 if (optarg[0] == '\0' && command_line.soname 1195 && command_line.soname[0]) 1196 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1197 else 1198 command_line.soname = optarg; 1199 break; 1200 case OPTION_SORT_COMMON: 1201 if (optarg == NULL 1202 || strcmp (optarg, N_("descending")) == 0) 1203 config.sort_common = sort_descending; 1204 else if (strcmp (optarg, N_("ascending")) == 0) 1205 config.sort_common = sort_ascending; 1206 else 1207 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1208 optarg); 1209 break; 1210 case OPTION_SORT_SECTION: 1211 if (strcmp (optarg, N_("name")) == 0) 1212 sort_section = by_name; 1213 else if (strcmp (optarg, N_("alignment")) == 0) 1214 sort_section = by_alignment; 1215 else 1216 einfo (_("%P%F: invalid section sorting option: %s\n"), 1217 optarg); 1218 break; 1219 case OPTION_STATS: 1220 config.stats = TRUE; 1221 break; 1222 case OPTION_SYMBOLIC: 1223 command_line.symbolic = symbolic; 1224 break; 1225 case OPTION_SYMBOLIC_FUNCTIONS: 1226 command_line.symbolic = symbolic_functions; 1227 break; 1228 case 't': 1229 trace_files = TRUE; 1230 break; 1231 case 'T': 1232 previous_script_handle = saved_script_handle; 1233 ldfile_open_command_file (optarg); 1234 parser_input = input_script; 1235 yyparse (); 1236 previous_script_handle = NULL; 1237 break; 1238 case OPTION_DEFAULT_SCRIPT: 1239 command_line.default_script = optarg; 1240 break; 1241 case OPTION_SECTION_START: 1242 { 1243 char *optarg2; 1244 char *sec_name; 1245 int len; 1246 1247 /* Check for <something>=<somthing>... */ 1248 optarg2 = strchr (optarg, '='); 1249 if (optarg2 == NULL) 1250 einfo (_("%P%F: invalid argument to option" 1251 " \"--section-start\"\n")); 1252 1253 optarg2++; 1254 1255 /* So far so good. Are all the args present? */ 1256 if ((*optarg == '\0') || (*optarg2 == '\0')) 1257 einfo (_("%P%F: missing argument(s) to option" 1258 " \"--section-start\"\n")); 1259 1260 /* We must copy the section name as set_section_start 1261 doesn't do it for us. */ 1262 len = optarg2 - optarg; 1263 sec_name = (char *) xmalloc (len); 1264 memcpy (sec_name, optarg, len - 1); 1265 sec_name[len - 1] = 0; 1266 1267 /* Then set it... */ 1268 set_section_start (sec_name, optarg2); 1269 } 1270 break; 1271 case OPTION_TARGET_HELP: 1272 /* Mention any target specific options. */ 1273 ldemul_list_emulation_options (stdout); 1274 exit (0); 1275 case OPTION_TBSS: 1276 set_segment_start (".bss", optarg); 1277 break; 1278 case OPTION_TDATA: 1279 set_segment_start (".data", optarg); 1280 break; 1281 case OPTION_TTEXT: 1282 set_segment_start (".text", optarg); 1283 break; 1284 case OPTION_TTEXT_SEGMENT: 1285 set_segment_start (".text-segment", optarg); 1286 break; 1287 case OPTION_TRODATA_SEGMENT: 1288 set_segment_start (".rodata-segment", optarg); 1289 break; 1290 case OPTION_TLDATA_SEGMENT: 1291 set_segment_start (".ldata-segment", optarg); 1292 break; 1293 case OPTION_TRADITIONAL_FORMAT: 1294 link_info.traditional_format = TRUE; 1295 break; 1296 case OPTION_TASK_LINK: 1297 link_info.task_link = TRUE; 1298 /* Fall through. */ 1299 case OPTION_UR: 1300 if (bfd_link_pic (&link_info)) 1301 einfo (_("%P%F: -r and %s may not be used together\n"), 1302 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1303 1304 link_info.type = type_relocatable; 1305 config.build_constructors = TRUE; 1306 config.magic_demand_paged = FALSE; 1307 config.text_read_only = FALSE; 1308 input_flags.dynamic = FALSE; 1309 break; 1310 case 'u': 1311 ldlang_add_undef (optarg, TRUE); 1312 break; 1313 case OPTION_REQUIRE_DEFINED_SYMBOL: 1314 ldlang_add_require_defined (optarg); 1315 break; 1316 case OPTION_UNIQUE: 1317 if (optarg != NULL) 1318 lang_add_unique (optarg); 1319 else 1320 config.unique_orphan_sections = TRUE; 1321 break; 1322 case OPTION_VERBOSE: 1323 ldversion (1); 1324 version_printed = TRUE; 1325 verbose = TRUE; 1326 overflow_cutoff_limit = -2; 1327 if (optarg != NULL) 1328 { 1329 char *end; 1330 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1331 if (*end) 1332 einfo (_("%P%F: invalid number `%s'\n"), optarg); 1333 #ifdef ENABLE_PLUGINS 1334 report_plugin_symbols = level > 1; 1335 #endif /* ENABLE_PLUGINS */ 1336 } 1337 break; 1338 case 'v': 1339 ldversion (0); 1340 version_printed = TRUE; 1341 break; 1342 case 'V': 1343 ldversion (1); 1344 version_printed = TRUE; 1345 break; 1346 case OPTION_VERSION: 1347 ldversion (2); 1348 xexit (0); 1349 break; 1350 case OPTION_VERSION_SCRIPT: 1351 /* This option indicates a small script that only specifies 1352 version information. Read it, but don't assume that 1353 we've seen a linker script. */ 1354 { 1355 FILE *hold_script_handle; 1356 1357 hold_script_handle = saved_script_handle; 1358 ldfile_open_command_file (optarg); 1359 saved_script_handle = hold_script_handle; 1360 parser_input = input_version_script; 1361 yyparse (); 1362 } 1363 break; 1364 case OPTION_VERSION_EXPORTS_SECTION: 1365 /* This option records a version symbol to be applied to the 1366 symbols listed for export to be found in the object files 1367 .exports sections. */ 1368 command_line.version_exports_section = optarg; 1369 break; 1370 case OPTION_DYNAMIC_LIST_DATA: 1371 command_line.dynamic_list = dynamic_list_data; 1372 if (command_line.symbolic == symbolic) 1373 command_line.symbolic = symbolic_unset; 1374 break; 1375 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1376 lang_append_dynamic_list_cpp_typeinfo (); 1377 if (command_line.dynamic_list != dynamic_list_data) 1378 command_line.dynamic_list = dynamic_list; 1379 if (command_line.symbolic == symbolic) 1380 command_line.symbolic = symbolic_unset; 1381 break; 1382 case OPTION_DYNAMIC_LIST_CPP_NEW: 1383 lang_append_dynamic_list_cpp_new (); 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_DYNAMIC_LIST: 1390 /* This option indicates a small script that only specifies 1391 a dynamic list. Read it, but don't assume that we've 1392 seen a linker script. */ 1393 { 1394 FILE *hold_script_handle; 1395 1396 hold_script_handle = saved_script_handle; 1397 ldfile_open_command_file (optarg); 1398 saved_script_handle = hold_script_handle; 1399 parser_input = input_dynamic_list; 1400 yyparse (); 1401 } 1402 if (command_line.dynamic_list != dynamic_list_data) 1403 command_line.dynamic_list = dynamic_list; 1404 if (command_line.symbolic == symbolic) 1405 command_line.symbolic = symbolic_unset; 1406 break; 1407 case OPTION_WARN_COMMON: 1408 config.warn_common = TRUE; 1409 break; 1410 case OPTION_WARN_CONSTRUCTORS: 1411 config.warn_constructors = TRUE; 1412 break; 1413 case OPTION_WARN_FATAL: 1414 config.fatal_warnings = TRUE; 1415 break; 1416 case OPTION_NO_WARN_FATAL: 1417 config.fatal_warnings = FALSE; 1418 break; 1419 case OPTION_WARN_MULTIPLE_GP: 1420 config.warn_multiple_gp = TRUE; 1421 break; 1422 case OPTION_WARN_ONCE: 1423 config.warn_once = TRUE; 1424 break; 1425 case OPTION_WARN_SECTION_ALIGN: 1426 config.warn_section_align = TRUE; 1427 break; 1428 case OPTION_WARN_SHARED_TEXTREL: 1429 link_info.warn_shared_textrel = TRUE; 1430 break; 1431 case OPTION_WARN_ALTERNATE_EM: 1432 link_info.warn_alternate_em = TRUE; 1433 break; 1434 case OPTION_WHOLE_ARCHIVE: 1435 input_flags.whole_archive = TRUE; 1436 break; 1437 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1438 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1439 break; 1440 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1441 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1442 break; 1443 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1444 input_flags.add_DT_NEEDED_for_regular = TRUE; 1445 break; 1446 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1447 input_flags.add_DT_NEEDED_for_regular = FALSE; 1448 break; 1449 case OPTION_WRAP: 1450 add_wrap (optarg); 1451 break; 1452 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1453 add_ignoresym (&link_info, optarg); 1454 break; 1455 case OPTION_DISCARD_NONE: 1456 link_info.discard = discard_none; 1457 break; 1458 case 'X': 1459 link_info.discard = discard_l; 1460 break; 1461 case 'x': 1462 link_info.discard = discard_all; 1463 break; 1464 case 'Y': 1465 if (CONST_STRNEQ (optarg, "P,")) 1466 optarg += 2; 1467 if (default_dirlist != NULL) 1468 free (default_dirlist); 1469 default_dirlist = xstrdup (optarg); 1470 break; 1471 case 'y': 1472 add_ysym (optarg); 1473 break; 1474 case OPTION_SPARE_DYNAMIC_TAGS: 1475 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1476 break; 1477 case OPTION_SPLIT_BY_RELOC: 1478 if (optarg != NULL) 1479 config.split_by_reloc = strtoul (optarg, NULL, 0); 1480 else 1481 config.split_by_reloc = 32768; 1482 break; 1483 case OPTION_SPLIT_BY_FILE: 1484 if (optarg != NULL) 1485 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1486 else 1487 config.split_by_file = 1; 1488 break; 1489 case OPTION_CHECK_SECTIONS: 1490 command_line.check_section_addresses = 1; 1491 break; 1492 case OPTION_NO_CHECK_SECTIONS: 1493 command_line.check_section_addresses = 0; 1494 break; 1495 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1496 command_line.accept_unknown_input_arch = TRUE; 1497 break; 1498 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1499 command_line.accept_unknown_input_arch = FALSE; 1500 break; 1501 case '(': 1502 lang_enter_group (); 1503 ingroup++; 1504 break; 1505 case ')': 1506 if (! ingroup) 1507 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1508 1509 lang_leave_group (); 1510 ingroup--; 1511 break; 1512 1513 case OPTION_INIT: 1514 link_info.init_function = optarg; 1515 break; 1516 1517 case OPTION_FINI: 1518 link_info.fini_function = optarg; 1519 break; 1520 1521 case OPTION_REDUCE_MEMORY_OVERHEADS: 1522 link_info.reduce_memory_overheads = TRUE; 1523 if (config.hash_table_size == 0) 1524 config.hash_table_size = 1021; 1525 break; 1526 1527 case OPTION_HASH_SIZE: 1528 { 1529 bfd_size_type new_size; 1530 1531 new_size = strtoul (optarg, NULL, 0); 1532 if (new_size) 1533 config.hash_table_size = new_size; 1534 else 1535 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1536 } 1537 break; 1538 1539 case OPTION_PUSH_STATE: 1540 input_flags.pushed = xmemdup (&input_flags, 1541 sizeof (input_flags), 1542 sizeof (input_flags)); 1543 break; 1544 1545 case OPTION_POP_STATE: 1546 if (input_flags.pushed == NULL) 1547 einfo (_("%P%F: no state pushed before popping\n")); 1548 else 1549 { 1550 struct lang_input_statement_flags *oldp = input_flags.pushed; 1551 memcpy (&input_flags, oldp, sizeof (input_flags)); 1552 free (oldp); 1553 } 1554 break; 1555 1556 case OPTION_PRINT_MEMORY_USAGE: 1557 command_line.print_memory_usage = TRUE; 1558 break; 1559 1560 case OPTION_ORPHAN_HANDLING: 1561 if (strcasecmp (optarg, "place") == 0) 1562 config.orphan_handling = orphan_handling_place; 1563 else if (strcasecmp (optarg, "warn") == 0) 1564 config.orphan_handling = orphan_handling_warn; 1565 else if (strcasecmp (optarg, "error") == 0) 1566 config.orphan_handling = orphan_handling_error; 1567 else if (strcasecmp (optarg, "discard") == 0) 1568 config.orphan_handling = orphan_handling_discard; 1569 else 1570 einfo (_("%P%F: invalid argument to option" 1571 " \"--orphan-handling\"\n")); 1572 break; 1573 } 1574 } 1575 1576 if (command_line.soname && command_line.soname[0] == '\0') 1577 { 1578 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1579 command_line.soname = NULL; 1580 } 1581 1582 while (ingroup) 1583 { 1584 lang_leave_group (); 1585 ingroup--; 1586 } 1587 1588 if (default_dirlist != NULL) 1589 { 1590 set_default_dirlist (default_dirlist); 1591 free (default_dirlist); 1592 } 1593 1594 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1595 /* FIXME: Should we allow emulations a chance to set this ? */ 1596 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1597 1598 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1599 /* FIXME: Should we allow emulations a chance to set this ? */ 1600 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1601 1602 if (bfd_link_relocatable (&link_info) 1603 && command_line.check_section_addresses < 0) 1604 command_line.check_section_addresses = 0; 1605 1606 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1607 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1608 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1609 for PIC outputs. -Bsymbolic overrides all others and vice versa. */ 1610 switch (command_line.symbolic) 1611 { 1612 case symbolic_unset: 1613 break; 1614 case symbolic: 1615 /* -Bsymbolic is for PIC output only. */ 1616 if (bfd_link_pic (&link_info)) 1617 { 1618 link_info.symbolic = TRUE; 1619 /* Should we free the unused memory? */ 1620 link_info.dynamic_list = NULL; 1621 command_line.dynamic_list = dynamic_list_unset; 1622 } 1623 break; 1624 case symbolic_functions: 1625 /* -Bsymbolic-functions is for PIC output only. */ 1626 if (bfd_link_pic (&link_info)) 1627 command_line.dynamic_list = dynamic_list_data; 1628 break; 1629 } 1630 1631 switch (command_line.dynamic_list) 1632 { 1633 case dynamic_list_unset: 1634 break; 1635 case dynamic_list_data: 1636 link_info.dynamic_data = TRUE; 1637 /* Fall through. */ 1638 case dynamic_list: 1639 link_info.dynamic = TRUE; 1640 break; 1641 } 1642 1643 if (!bfd_link_dll (&link_info)) 1644 { 1645 if (command_line.filter_shlib) 1646 einfo (_("%P%F: -F may not be used without -shared\n")); 1647 if (command_line.auxiliary_filters) 1648 einfo (_("%P%F: -f may not be used without -shared\n")); 1649 } 1650 1651 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1652 don't see how else this can be handled, since in this case we 1653 must preserve all externally visible symbols. */ 1654 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1655 { 1656 link_info.strip = strip_debugger; 1657 if (link_info.discard == discard_sec_merge) 1658 link_info.discard = discard_all; 1659 } 1660 } 1661 1662 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1663 library search path. */ 1664 1665 static void 1666 set_default_dirlist (char *dirlist_ptr) 1667 { 1668 char *p; 1669 1670 while (1) 1671 { 1672 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1673 if (p != NULL) 1674 *p = '\0'; 1675 if (*dirlist_ptr != '\0') 1676 ldfile_add_library_path (dirlist_ptr, TRUE); 1677 if (p == NULL) 1678 break; 1679 dirlist_ptr = p + 1; 1680 } 1681 } 1682 1683 static void 1684 set_section_start (char *sect, char *valstr) 1685 { 1686 const char *end; 1687 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1688 if (*end) 1689 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1690 lang_section_start (sect, exp_intop (val), NULL); 1691 } 1692 1693 static void 1694 set_segment_start (const char *section, char *valstr) 1695 { 1696 const char *name; 1697 const char *end; 1698 segment_type *seg; 1699 1700 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1701 if (*end) 1702 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1703 /* If we already have an entry for this segment, update the existing 1704 value. */ 1705 name = section + 1; 1706 for (seg = segments; seg; seg = seg->next) 1707 if (strcmp (seg->name, name) == 0) 1708 { 1709 seg->value = val; 1710 lang_section_start (section, exp_intop (val), seg); 1711 return; 1712 } 1713 /* There was no existing value so we must create a new segment 1714 entry. */ 1715 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1716 seg->name = name; 1717 seg->value = val; 1718 seg->used = FALSE; 1719 /* Add it to the linked list of segments. */ 1720 seg->next = segments; 1721 segments = seg; 1722 /* Historically, -Ttext and friends set the base address of a 1723 particular section. For backwards compatibility, we still do 1724 that. If a SEGMENT_START directive is seen, the section address 1725 assignment will be disabled. */ 1726 lang_section_start (section, exp_intop (val), seg); 1727 } 1728 1729 static void 1730 elf_shlib_list_options (FILE *file) 1731 { 1732 fprintf (file, _("\ 1733 --audit=AUDITLIB Specify a library to use for auditing\n")); 1734 fprintf (file, _("\ 1735 -Bgroup Selects group name lookup rules for DSO\n")); 1736 fprintf (file, _("\ 1737 --disable-new-dtags Disable new dynamic tags\n")); 1738 fprintf (file, _("\ 1739 --enable-new-dtags Enable new dynamic tags\n")); 1740 fprintf (file, _("\ 1741 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1742 fprintf (file, _("\ 1743 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n")); 1744 fprintf (file, _("\ 1745 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1746 fprintf (file, _("\ 1747 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1748 fprintf (file, _("\ 1749 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1750 Specify a library to use for auditing dependencies\n")); 1751 fprintf (file, _("\ 1752 -z combreloc Merge dynamic relocs into one section and sort\n")); 1753 fprintf (file, _("\ 1754 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1755 fprintf (file, _("\ 1756 -z global Make symbols in DSO available for subsequently\n\ 1757 loaded objects\n")); 1758 fprintf (file, _("\ 1759 -z initfirst Mark DSO to be initialized first at runtime\n")); 1760 fprintf (file, _("\ 1761 -z interpose Mark object to interpose all DSOs but executable\n")); 1762 fprintf (file, _("\ 1763 -z lazy Mark object lazy runtime binding (default)\n")); 1764 fprintf (file, _("\ 1765 -z loadfltr Mark object requiring immediate process\n")); 1766 fprintf (file, _("\ 1767 -z nocopyreloc Don't create copy relocs\n")); 1768 fprintf (file, _("\ 1769 -z nodefaultlib Mark object not to use default search paths\n")); 1770 fprintf (file, _("\ 1771 -z nodelete Mark DSO non-deletable at runtime\n")); 1772 fprintf (file, _("\ 1773 -z nodlopen Mark DSO not available to dlopen\n")); 1774 fprintf (file, _("\ 1775 -z nodump Mark DSO not available to dldump\n")); 1776 fprintf (file, _("\ 1777 -z now Mark object non-lazy runtime binding\n")); 1778 fprintf (file, _("\ 1779 -z origin Mark object requiring immediate $ORIGIN\n\ 1780 processing at runtime\n")); 1781 #if DEFAULT_LD_Z_RELRO 1782 fprintf (file, _("\ 1783 -z relro Create RELRO program header (default)\n")); 1784 fprintf (file, _("\ 1785 -z norelro Don't create RELRO program header\n")); 1786 #else 1787 fprintf (file, _("\ 1788 -z relro Create RELRO program header\n")); 1789 fprintf (file, _("\ 1790 -z norelro Don't create RELRO program header (default)\n")); 1791 #endif 1792 fprintf (file, _("\ 1793 -z separate-code Create separate code program header\n")); 1794 fprintf (file, _("\ 1795 -z noseparate-code Don't create separate code program header (default)\n")); 1796 fprintf (file, _("\ 1797 -z common Generate common symbols with STT_COMMON type\n")); 1798 fprintf (file, _("\ 1799 -z nocommon Generate common symbols with STT_OBJECT type\n")); 1800 fprintf (file, _("\ 1801 -z stack-size=SIZE Set size of stack segment\n")); 1802 fprintf (file, _("\ 1803 -z text Treat DT_TEXTREL in shared object as error\n")); 1804 fprintf (file, _("\ 1805 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1806 fprintf (file, _("\ 1807 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1808 } 1809 1810 static void 1811 elf_static_list_options (FILE *file) 1812 { 1813 fprintf (file, _("\ 1814 --build-id[=STYLE] Generate build ID note\n")); 1815 fprintf (file, _("\ 1816 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1817 Compress DWARF debug sections using zlib\n")); 1818 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1819 fprintf (file, _("\ 1820 Default: zlib-gabi\n")); 1821 #else 1822 fprintf (file, _("\ 1823 Default: none\n")); 1824 #endif 1825 fprintf (file, _("\ 1826 -z common-page-size=SIZE Set common page size to SIZE\n")); 1827 fprintf (file, _("\ 1828 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1829 fprintf (file, _("\ 1830 -z defs Report unresolved symbols in object files.\n")); 1831 fprintf (file, _("\ 1832 -z muldefs Allow multiple definitions\n")); 1833 fprintf (file, _("\ 1834 -z execstack Mark executable as requiring executable stack\n")); 1835 fprintf (file, _("\ 1836 -z noexecstack Mark executable as not requiring executable stack\n")); 1837 fprintf (file, _("\ 1838 -z globalaudit Mark executable requiring global auditing\n")); 1839 } 1840 1841 static void 1842 elf_plt_unwind_list_options (FILE *file) 1843 { 1844 fprintf (file, _("\ 1845 --ld-generated-unwind-info Generate exception handling info for PLT\n\ 1846 --no-ld-generated-unwind-info\n\ 1847 Don't generate exception handling info for PLT\n")); 1848 } 1849 1850 static void 1851 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1852 bfd_boolean plt_unwind) 1853 { 1854 if (!elf) 1855 return; 1856 printf (_("ELF emulations:\n")); 1857 if (plt_unwind) 1858 elf_plt_unwind_list_options (file); 1859 elf_static_list_options (file); 1860 if (shlib) 1861 elf_shlib_list_options (file); 1862 } 1863 1864 1865 /* Print help messages for the options. */ 1867 1868 static void 1869 help (void) 1870 { 1871 unsigned i; 1872 const char **targets, **pp; 1873 int len; 1874 1875 printf (_("Usage: %s [options] file...\n"), program_name); 1876 1877 printf (_("Options:\n")); 1878 for (i = 0; i < OPTION_COUNT; i++) 1879 { 1880 if (ld_options[i].doc != NULL) 1881 { 1882 bfd_boolean comma; 1883 unsigned j; 1884 1885 printf (" "); 1886 1887 comma = FALSE; 1888 len = 2; 1889 1890 j = i; 1891 do 1892 { 1893 if (ld_options[j].shortopt != '\0' 1894 && ld_options[j].control != NO_HELP) 1895 { 1896 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1897 len += (comma ? 2 : 0) + 2; 1898 if (ld_options[j].arg != NULL) 1899 { 1900 if (ld_options[j].opt.has_arg != optional_argument) 1901 { 1902 printf (" "); 1903 ++len; 1904 } 1905 printf ("%s", _(ld_options[j].arg)); 1906 len += strlen (_(ld_options[j].arg)); 1907 } 1908 comma = TRUE; 1909 } 1910 ++j; 1911 } 1912 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1913 1914 j = i; 1915 do 1916 { 1917 if (ld_options[j].opt.name != NULL 1918 && ld_options[j].control != NO_HELP) 1919 { 1920 int two_dashes = 1921 (ld_options[j].control == TWO_DASHES 1922 || ld_options[j].control == EXACTLY_TWO_DASHES); 1923 1924 printf ("%s-%s%s", 1925 comma ? ", " : "", 1926 two_dashes ? "-" : "", 1927 ld_options[j].opt.name); 1928 len += ((comma ? 2 : 0) 1929 + 1 1930 + (two_dashes ? 1 : 0) 1931 + strlen (ld_options[j].opt.name)); 1932 if (ld_options[j].arg != NULL) 1933 { 1934 printf (" %s", _(ld_options[j].arg)); 1935 len += 1 + strlen (_(ld_options[j].arg)); 1936 } 1937 comma = TRUE; 1938 } 1939 ++j; 1940 } 1941 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1942 1943 if (len >= 30) 1944 { 1945 printf ("\n"); 1946 len = 0; 1947 } 1948 1949 for (; len < 30; len++) 1950 putchar (' '); 1951 1952 printf ("%s\n", _(ld_options[i].doc)); 1953 } 1954 } 1955 printf (_(" @FILE")); 1956 for (len = strlen (" @FILE"); len < 30; len++) 1957 putchar (' '); 1958 printf (_("Read options from FILE\n")); 1959 1960 /* Note: Various tools (such as libtool) depend upon the 1961 format of the listings below - do not change them. */ 1962 /* xgettext:c-format */ 1963 printf (_("%s: supported targets:"), program_name); 1964 targets = bfd_target_list (); 1965 for (pp = targets; *pp != NULL; pp++) 1966 printf (" %s", *pp); 1967 free (targets); 1968 printf ("\n"); 1969 1970 /* xgettext:c-format */ 1971 printf (_("%s: supported emulations: "), program_name); 1972 ldemul_list_emulations (stdout); 1973 printf ("\n"); 1974 1975 /* xgettext:c-format */ 1976 printf (_("%s: emulation specific options:\n"), program_name); 1977 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 1978 ELF_PLT_UNWIND_LIST_OPTIONS); 1979 ldemul_list_emulation_options (stdout); 1980 printf ("\n"); 1981 1982 if (REPORT_BUGS_TO[0]) 1983 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1984 } 1985
Indexes created Sun Mar 01 05:31:48 UTC 2026