lexsup.c revision 1.9
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 { {"disable-multiple-abs-defs", no_argument, NULL, 318 OPTION_DISABLE_MULTIPLE_DEFS_ABS}, 319 '\0', NULL, N_("Do not allow multiple definitions with symbols included\n" 320 " in filename invoked by -R or --just-symbols"), 321 TWO_DASHES}, 322 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 323 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 324 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 325 '\0', NULL, N_("Treat warnings as errors"), 326 TWO_DASHES }, 327 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 328 '\0', NULL, N_("Do not treat warnings as errors (default)"), 329 TWO_DASHES }, 330 { {"fini", required_argument, NULL, OPTION_FINI}, 331 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 332 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 333 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 334 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 335 '\0', NULL, N_("Remove unused sections (on some targets)"), 336 TWO_DASHES }, 337 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 338 '\0', NULL, N_("Don't remove unused sections (default)"), 339 TWO_DASHES }, 340 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 341 '\0', NULL, N_("List removed unused sections on stderr"), 342 TWO_DASHES }, 343 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 344 '\0', NULL, N_("Do not list removed unused sections"), 345 TWO_DASHES }, 346 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED}, 347 '\0', NULL, N_("Keep exported symbols when removing unused sections"), 348 TWO_DASHES }, 349 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 350 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 351 TWO_DASHES }, 352 { {"help", no_argument, NULL, OPTION_HELP}, 353 '\0', NULL, N_("Print option help"), TWO_DASHES }, 354 { {"init", required_argument, NULL, OPTION_INIT}, 355 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 356 { {"Map", required_argument, NULL, OPTION_MAP}, 357 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 358 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 359 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 360 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 361 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 362 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 363 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 364 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 365 '\0', NULL, N_("Do not allow unresolved references in object files"), 366 TWO_DASHES }, 367 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 368 '\0', NULL, N_("Allow unresolved references in shared libraries"), 369 TWO_DASHES }, 370 { {"no-allow-shlib-undefined", no_argument, NULL, 371 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 372 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 373 TWO_DASHES }, 374 { {"allow-multiple-definition", no_argument, NULL, 375 OPTION_ALLOW_MULTIPLE_DEFINITION}, 376 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 377 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 378 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 379 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 380 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 381 { {"default-imported-symver", no_argument, NULL, 382 OPTION_DEFAULT_IMPORTED_SYMVER}, 383 '\0', NULL, N_("Create default symbol version for imported symbols"), 384 TWO_DASHES }, 385 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 386 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 387 { {"no-warn-search-mismatch", no_argument, NULL, 388 OPTION_NO_WARN_SEARCH_MISMATCH}, 389 '\0', NULL, N_("Don't warn on finding an incompatible library"), 390 TWO_DASHES}, 391 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 392 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 393 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 394 '\0', NULL, N_("Create an output file even if errors occur"), 395 TWO_DASHES }, 396 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 397 '\0', NULL, NULL, NO_HELP }, 398 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 399 '\0', NULL, N_("Only use library directories specified on\n" 400 " the command line"), 401 ONE_DASH }, 402 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 403 '\0', N_("TARGET"), N_("Specify target of output file"), 404 EXACTLY_TWO_DASHES }, 405 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 406 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 407 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 408 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 409 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 410 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 411 { {"reduce-memory-overheads", no_argument, NULL, 412 OPTION_REDUCE_MEMORY_OVERHEADS}, 413 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 414 TWO_DASHES }, 415 { {"relax", no_argument, NULL, OPTION_RELAX}, 416 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 417 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 418 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 419 { {"retain-symbols-file", required_argument, NULL, 420 OPTION_RETAIN_SYMBOLS_FILE}, 421 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 422 { {"rpath", required_argument, NULL, OPTION_RPATH}, 423 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 424 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 425 '\0', N_("PATH"), N_("Set link time shared library search path"), 426 ONE_DASH }, 427 { {"shared", no_argument, NULL, OPTION_SHARED}, 428 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 429 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD, NetBSD. */ 430 '\0', NULL, NULL, ONE_DASH }, 431 { {"pie", no_argument, NULL, OPTION_PIE}, 432 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 433 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 434 '\0', NULL, NULL, TWO_DASHES }, 435 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 436 '\0', N_("[=ascending|descending]"), 437 N_("Sort common symbols by alignment [in specified order]"), 438 TWO_DASHES }, 439 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 440 '\0', NULL, NULL, NO_HELP }, 441 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 442 '\0', N_("name|alignment"), 443 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 444 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 445 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 446 TWO_DASHES }, 447 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 448 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 449 TWO_DASHES }, 450 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 451 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 452 TWO_DASHES }, 453 { {"stats", no_argument, NULL, OPTION_STATS}, 454 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 455 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 456 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 457 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 458 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 459 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 460 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 461 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 462 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 463 TWO_DASHES }, 464 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 465 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 466 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 467 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 468 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 469 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 470 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 471 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 472 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 473 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 474 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 475 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 476 { {"unresolved-symbols=<method>", required_argument, NULL, 477 OPTION_UNRESOLVED_SYMBOLS}, 478 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 479 " ignore-all, report-all, ignore-in-object-files,\n" 480 " ignore-in-shared-libs"), 481 TWO_DASHES }, 482 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 483 '\0', N_("[=NUMBER]"), 484 N_("Output lots of information during link"), TWO_DASHES }, 485 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 486 '\0', NULL, NULL, NO_HELP }, 487 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 488 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 489 { {"version-exports-section", required_argument, NULL, 490 OPTION_VERSION_EXPORTS_SECTION }, 491 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 492 " SYMBOL as the version."), 493 TWO_DASHES }, 494 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 495 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 496 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 497 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 498 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 499 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 500 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 501 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 502 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 503 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 504 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 505 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 506 TWO_DASHES }, 507 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 508 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 509 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 510 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 511 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 512 '\0', NULL, N_("Warn if start of section changes due to alignment"), 513 TWO_DASHES }, 514 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 515 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 516 TWO_DASHES }, 517 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 518 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 519 TWO_DASHES }, 520 { {"warn-unresolved-symbols", no_argument, NULL, 521 OPTION_WARN_UNRESOLVED_SYMBOLS}, 522 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 523 { {"error-unresolved-symbols", no_argument, NULL, 524 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 525 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 526 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 527 '\0', NULL, N_("Include all objects from following archives"), 528 TWO_DASHES }, 529 { {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 530 '\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */ 531 { {"wrap", required_argument, NULL, OPTION_WRAP}, 532 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 533 { {"ignore-unresolved-symbol", required_argument, NULL, 534 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 535 '\0', N_("SYMBOL"), 536 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 537 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 538 '\0', NULL, N_("Push state of flags governing input file handling"), 539 TWO_DASHES }, 540 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 541 '\0', NULL, N_("Pop state of flags governing input file handling"), 542 TWO_DASHES }, 543 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 544 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 545 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 546 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 547 TWO_DASHES }, 548 }; 549 550 #define OPTION_COUNT ARRAY_SIZE (ld_options) 551 552 void 553 parse_args (unsigned argc, char **argv) 554 { 555 unsigned i; 556 int is, il, irl; 557 int ingroup = 0; 558 char *default_dirlist = NULL; 559 char *shortopts; 560 struct option *longopts; 561 struct option *really_longopts; 562 int last_optind; 563 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 564 565 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 566 longopts = (struct option *) 567 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 568 really_longopts = (struct option *) 569 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 570 571 /* Starting the short option string with '-' is for programs that 572 expect options and other ARGV-elements in any order and that care about 573 the ordering of the two. We describe each non-option ARGV-element 574 as if it were the argument of an option with character code 1. */ 575 shortopts[0] = '-'; 576 is = 1; 577 il = 0; 578 irl = 0; 579 for (i = 0; i < OPTION_COUNT; i++) 580 { 581 if (ld_options[i].shortopt != '\0') 582 { 583 shortopts[is] = ld_options[i].shortopt; 584 ++is; 585 if (ld_options[i].opt.has_arg == required_argument 586 || ld_options[i].opt.has_arg == optional_argument) 587 { 588 shortopts[is] = ':'; 589 ++is; 590 if (ld_options[i].opt.has_arg == optional_argument) 591 { 592 shortopts[is] = ':'; 593 ++is; 594 } 595 } 596 } 597 if (ld_options[i].opt.name != NULL) 598 { 599 if (ld_options[i].control == EXACTLY_TWO_DASHES) 600 { 601 really_longopts[irl] = ld_options[i].opt; 602 ++irl; 603 } 604 else 605 { 606 longopts[il] = ld_options[i].opt; 607 ++il; 608 } 609 } 610 } 611 shortopts[is] = '\0'; 612 longopts[il].name = NULL; 613 really_longopts[irl].name = NULL; 614 615 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 616 617 /* The -G option is ambiguous on different platforms. Sometimes it 618 specifies the largest data size to put into the small data 619 section. Sometimes it is equivalent to --shared. Unfortunately, 620 the first form takes an argument, while the second does not. 621 622 We need to permit the --shared form because on some platforms, 623 such as Solaris, gcc -shared will pass -G to the linker. 624 625 To permit either usage, we look through the argument list. If we 626 find -G not followed by a number, we change it into --shared. 627 This will work for most normal cases. */ 628 for (i = 1; i < argc; i++) 629 if (strcmp (argv[i], "-G") == 0 630 && (i + 1 >= argc 631 || ! ISDIGIT (argv[i + 1][0]))) 632 argv[i] = (char *) "--shared"; 633 634 /* Because we permit long options to start with a single dash, and 635 we have a --library option, and the -l option is conventionally 636 used with an immediately following argument, we can have bad 637 results if somebody tries to use -l with a library whose name 638 happens to start with "ibrary", as in -li. We avoid problems by 639 simply turning -l into --library. This means that users will 640 have to use two dashes in order to use --library, which is OK 641 since that's how it is documented. 642 643 FIXME: It's possible that this problem can arise for other short 644 options as well, although the user does always have the recourse 645 of adding a space between the option and the argument. */ 646 for (i = 1; i < argc; i++) 647 { 648 if (argv[i][0] == '-' 649 && argv[i][1] == 'l' 650 && argv[i][2] != '\0') 651 { 652 char *n; 653 654 n = (char *) xmalloc (strlen (argv[i]) + 20); 655 sprintf (n, "--library=%s", argv[i] + 2); 656 argv[i] = n; 657 } 658 } 659 660 last_optind = -1; 661 while (1) 662 { 663 int longind; 664 int optc; 665 static unsigned int defsym_count; 666 667 /* Using last_optind lets us avoid calling ldemul_parse_args 668 multiple times on a single option, which would lead to 669 confusion in the internal static variables maintained by 670 getopt. This could otherwise happen for an argument like 671 -nx, in which the -n is parsed as a single option, and we 672 loop around to pick up the -x. */ 673 if (optind != last_optind) 674 if (ldemul_parse_args (argc, argv)) 675 continue; 676 677 /* getopt_long_only is like getopt_long, but '-' as well as '--' 678 can indicate a long option. */ 679 opterr = 0; 680 last_optind = optind; 681 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 682 if (optc == '?') 683 { 684 optind = last_optind; 685 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 686 } 687 688 if (ldemul_handle_option (optc)) 689 continue; 690 691 if (optc == -1) 692 break; 693 694 switch (optc) 695 { 696 case '?': 697 { 698 /* If the last word on the command line is an option that 699 requires an argument, getopt will refuse to recognise it. 700 Try to catch such options here and issue a more helpful 701 error message than just "unrecognized option". */ 702 int opt; 703 704 for (opt = ARRAY_SIZE (ld_options); opt--;) 705 if (ld_options[opt].opt.has_arg == required_argument 706 /* FIXME: There are a few short options that do not 707 have long equivalents, but which require arguments. 708 We should handle them too. */ 709 && ld_options[opt].opt.name != NULL 710 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 711 { 712 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 713 break; 714 } 715 716 if (opt == -1) 717 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 718 } 719 /* Fall through. */ 720 721 default: 722 einfo (_("%F%P: use the --help option for usage information\n")); 723 break; 724 725 case 1: /* File name. */ 726 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 727 break; 728 729 case OPTION_IGNORE: 730 break; 731 case 'a': 732 /* For HP/UX compatibility. Actually -a shared should mean 733 ``use only shared libraries'' but, then, we don't 734 currently support shared libraries on HP/UX anyhow. */ 735 if (strcmp (optarg, "archive") == 0) 736 input_flags.dynamic = FALSE; 737 else if (strcmp (optarg, "shared") == 0 738 || strcmp (optarg, "default") == 0) 739 input_flags.dynamic = TRUE; 740 else 741 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg); 742 break; 743 case OPTION_ASSERT: 744 /* FIXME: We just ignore these, but we should handle them. */ 745 if (strcmp (optarg, "definitions") == 0) 746 ; 747 else if (strcmp (optarg, "nodefinitions") == 0) 748 ; 749 else if (strcmp (optarg, "nosymbolic") == 0) 750 ; 751 else if (strcmp (optarg, "pure-text") == 0) 752 ; 753 else 754 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg); 755 break; 756 case 'A': 757 ldfile_add_arch (optarg); 758 break; 759 case 'b': 760 lang_add_target (optarg); 761 break; 762 case 'c': 763 ldfile_open_command_file (optarg); 764 parser_input = input_mri_script; 765 yyparse (); 766 break; 767 case OPTION_CALL_SHARED: 768 input_flags.dynamic = TRUE; 769 break; 770 case OPTION_NON_SHARED: 771 input_flags.dynamic = FALSE; 772 break; 773 case OPTION_CREF: 774 command_line.cref = TRUE; 775 link_info.notice_all = TRUE; 776 break; 777 case 'd': 778 command_line.force_common_definition = TRUE; 779 break; 780 case OPTION_FORCE_GROUP_ALLOCATION: 781 command_line.force_group_allocation = TRUE; 782 break; 783 case OPTION_DEFSYM: 784 lex_string = optarg; 785 lex_redirect (optarg, "--defsym", ++defsym_count); 786 parser_input = input_defsym; 787 yyparse (); 788 lex_string = NULL; 789 break; 790 case OPTION_DEMANGLE: 791 demangling = TRUE; 792 if (optarg != NULL) 793 { 794 enum demangling_styles style; 795 796 style = cplus_demangle_name_to_style (optarg); 797 if (style == unknown_demangling) 798 einfo (_("%F%P: unknown demangling style `%s'\n"), 799 optarg); 800 801 cplus_demangle_set_style (style); 802 } 803 break; 804 case 'I': /* Used on Solaris. */ 805 case OPTION_DYNAMIC_LINKER: 806 command_line.interpreter = optarg; 807 link_info.nointerp = 0; 808 break; 809 case OPTION_NO_DYNAMIC_LINKER: 810 link_info.nointerp = 1; 811 break; 812 case OPTION_SYSROOT: 813 /* Already handled in ldmain.c. */ 814 break; 815 case OPTION_EB: 816 command_line.endian = ENDIAN_BIG; 817 break; 818 case OPTION_EL: 819 command_line.endian = ENDIAN_LITTLE; 820 break; 821 case OPTION_EMBEDDED_RELOCS: 822 command_line.embedded_relocs = TRUE; 823 break; 824 case OPTION_EXPORT_DYNAMIC: 825 case 'E': /* HP/UX compatibility. */ 826 link_info.export_dynamic = TRUE; 827 break; 828 case OPTION_NO_EXPORT_DYNAMIC: 829 link_info.export_dynamic = FALSE; 830 break; 831 case 'e': 832 lang_add_entry (optarg, TRUE); 833 break; 834 case 'f': 835 if (command_line.auxiliary_filters == NULL) 836 { 837 command_line.auxiliary_filters = (char **) 838 xmalloc (2 * sizeof (char *)); 839 command_line.auxiliary_filters[0] = optarg; 840 command_line.auxiliary_filters[1] = NULL; 841 } 842 else 843 { 844 int c; 845 char **p; 846 847 c = 0; 848 for (p = command_line.auxiliary_filters; *p != NULL; p++) 849 ++c; 850 command_line.auxiliary_filters = (char **) 851 xrealloc (command_line.auxiliary_filters, 852 (c + 2) * sizeof (char *)); 853 command_line.auxiliary_filters[c] = optarg; 854 command_line.auxiliary_filters[c + 1] = NULL; 855 } 856 break; 857 case 'F': 858 command_line.filter_shlib = optarg; 859 break; 860 case OPTION_FORCE_EXE_SUFFIX: 861 command_line.force_exe_suffix = TRUE; 862 break; 863 case 'G': 864 { 865 char *end; 866 g_switch_value = strtoul (optarg, &end, 0); 867 if (*end) 868 einfo (_("%F%P: invalid number `%s'\n"), optarg); 869 } 870 break; 871 case 'g': 872 /* Ignore. */ 873 break; 874 case OPTION_GC_SECTIONS: 875 link_info.gc_sections = TRUE; 876 break; 877 case OPTION_PRINT_GC_SECTIONS: 878 link_info.print_gc_sections = TRUE; 879 break; 880 case OPTION_GC_KEEP_EXPORTED: 881 link_info.gc_keep_exported = TRUE; 882 break; 883 case OPTION_HELP: 884 help (); 885 xexit (0); 886 break; 887 case 'L': 888 ldfile_add_library_path (optarg, TRUE); 889 break; 890 case 'l': 891 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 892 break; 893 case 'M': 894 config.map_filename = "-"; 895 break; 896 case 'm': 897 /* Ignore. Was handled in a pre-parse. */ 898 break; 899 case OPTION_MAP: 900 config.map_filename = optarg; 901 break; 902 case 'N': 903 config.text_read_only = FALSE; 904 config.magic_demand_paged = FALSE; 905 input_flags.dynamic = FALSE; 906 break; 907 case OPTION_NO_OMAGIC: 908 config.text_read_only = TRUE; 909 config.magic_demand_paged = TRUE; 910 /* NB/ Does not set input_flags.dynamic to TRUE. 911 Use --call-shared or -Bdynamic for this. */ 912 break; 913 case 'n': 914 config.magic_demand_paged = FALSE; 915 input_flags.dynamic = FALSE; 916 break; 917 case OPTION_NO_DEFINE_COMMON: 918 link_info.inhibit_common_definition = TRUE; 919 break; 920 case OPTION_NO_DEMANGLE: 921 demangling = FALSE; 922 break; 923 case OPTION_NO_GC_SECTIONS: 924 link_info.gc_sections = FALSE; 925 break; 926 case OPTION_NO_PRINT_GC_SECTIONS: 927 link_info.print_gc_sections = FALSE; 928 break; 929 case OPTION_NO_KEEP_MEMORY: 930 link_info.keep_memory = FALSE; 931 break; 932 case OPTION_NO_UNDEFINED: 933 link_info.unresolved_syms_in_objects 934 = how_to_report_unresolved_symbols; 935 break; 936 case OPTION_ALLOW_SHLIB_UNDEFINED: 937 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 938 break; 939 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 940 link_info.unresolved_syms_in_shared_libs 941 = how_to_report_unresolved_symbols; 942 break; 943 case OPTION_UNRESOLVED_SYMBOLS: 944 if (strcmp (optarg, "ignore-all") == 0) 945 { 946 link_info.unresolved_syms_in_objects = RM_IGNORE; 947 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 948 } 949 else if (strcmp (optarg, "report-all") == 0) 950 { 951 link_info.unresolved_syms_in_objects 952 = how_to_report_unresolved_symbols; 953 link_info.unresolved_syms_in_shared_libs 954 = how_to_report_unresolved_symbols; 955 } 956 else if (strcmp (optarg, "ignore-in-object-files") == 0) 957 { 958 link_info.unresolved_syms_in_objects = RM_IGNORE; 959 link_info.unresolved_syms_in_shared_libs 960 = how_to_report_unresolved_symbols; 961 } 962 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 963 { 964 link_info.unresolved_syms_in_objects 965 = how_to_report_unresolved_symbols; 966 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 967 } 968 else 969 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg); 970 break; 971 case OPTION_WARN_UNRESOLVED_SYMBOLS: 972 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 973 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 974 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 975 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 976 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 977 break; 978 979 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 980 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 981 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 982 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 983 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 984 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 985 break; 986 case OPTION_ALLOW_MULTIPLE_DEFINITION: 987 link_info.allow_multiple_definition = TRUE; 988 break; 989 case OPTION_NO_UNDEFINED_VERSION: 990 link_info.allow_undefined_version = FALSE; 991 break; 992 case OPTION_DEFAULT_SYMVER: 993 link_info.create_default_symver = TRUE; 994 break; 995 case OPTION_DEFAULT_IMPORTED_SYMVER: 996 link_info.default_imported_symver = TRUE; 997 break; 998 case OPTION_NO_WARN_MISMATCH: 999 command_line.warn_mismatch = FALSE; 1000 break; 1001 case OPTION_NO_WARN_SEARCH_MISMATCH: 1002 command_line.warn_search_mismatch = FALSE; 1003 break; 1004 case OPTION_NOINHIBIT_EXEC: 1005 force_make_executable = TRUE; 1006 break; 1007 case OPTION_NOSTDLIB: 1008 config.only_cmd_line_lib_dirs = TRUE; 1009 break; 1010 case OPTION_NO_WHOLE_ARCHIVE: 1011 input_flags.whole_archive = FALSE; 1012 break; 1013 case 'O': 1014 /* FIXME "-O<non-digits> <value>" used to set the address of 1015 section <non-digits>. Was this for compatibility with 1016 something, or can we create a new option to do that 1017 (with a syntax similar to -defsym)? 1018 getopt can't handle two args to an option without kludges. */ 1019 1020 /* Enable optimizations of output files. */ 1021 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1022 break; 1023 case 'o': 1024 lang_add_output (optarg, 0); 1025 break; 1026 case OPTION_OFORMAT: 1027 lang_add_output_format (optarg, NULL, NULL, 0); 1028 break; 1029 case OPTION_OUT_IMPLIB: 1030 command_line.out_implib_filename = xstrdup (optarg); 1031 break; 1032 case OPTION_PRINT_SYSROOT: 1033 if (*ld_sysroot) 1034 puts (ld_sysroot); 1035 xexit (0); 1036 break; 1037 case OPTION_PRINT_OUTPUT_FORMAT: 1038 command_line.print_output_format = TRUE; 1039 break; 1040 #ifdef ENABLE_PLUGINS 1041 case OPTION_PLUGIN: 1042 plugin_opt_plugin (optarg); 1043 break; 1044 case OPTION_PLUGIN_OPT: 1045 if (plugin_opt_plugin_arg (optarg)) 1046 einfo (_("%F%P: bad -plugin-opt option\n")); 1047 break; 1048 #endif /* ENABLE_PLUGINS */ 1049 case 'q': 1050 link_info.emitrelocations = TRUE; 1051 break; 1052 case 'i': 1053 case 'r': 1054 if (optind == last_optind) 1055 /* This can happen if the user put "-rpath,a" on the command 1056 line. (Or something similar. The comma is important). 1057 Getopt becomes confused and thinks that this is a -r option 1058 but it cannot parse the text after the -r so it refuses to 1059 increment the optind counter. Detect this case and issue 1060 an error message here. We cannot just make this a warning, 1061 increment optind, and continue because getopt is too confused 1062 and will seg-fault the next time around. */ 1063 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]); 1064 1065 if (bfd_link_pic (&link_info)) 1066 einfo (_("%F%P: -r and %s may not be used together\n"), 1067 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1068 1069 link_info.type = type_relocatable; 1070 config.build_constructors = FALSE; 1071 config.magic_demand_paged = FALSE; 1072 config.text_read_only = FALSE; 1073 input_flags.dynamic = FALSE; 1074 break; 1075 case 'R': 1076 /* The GNU linker traditionally uses -R to mean to include 1077 only the symbols from a file. The Solaris linker uses -R 1078 to set the path used by the runtime linker to find 1079 libraries. This is the GNU linker -rpath argument. We 1080 try to support both simultaneously by checking the file 1081 named. If it is a directory, rather than a regular file, 1082 we assume -rpath was meant. */ 1083 { 1084 struct stat s; 1085 1086 if (stat (optarg, &s) >= 0 1087 && ! S_ISDIR (s.st_mode)) 1088 { 1089 lang_add_input_file (optarg, 1090 lang_input_file_is_symbols_only_enum, 1091 NULL); 1092 break; 1093 } 1094 } 1095 /* Fall through. */ 1096 case OPTION_RPATH: 1097 if (command_line.rpath == NULL) 1098 command_line.rpath = xstrdup (optarg); 1099 else 1100 { 1101 size_t rpath_len = strlen (command_line.rpath); 1102 size_t optarg_len = strlen (optarg); 1103 char *buf; 1104 char *cp = command_line.rpath; 1105 1106 /* First see whether OPTARG is already in the path. */ 1107 do 1108 { 1109 if (strncmp (optarg, cp, optarg_len) == 0 1110 && (cp[optarg_len] == 0 1111 || cp[optarg_len] == config.rpath_separator)) 1112 /* We found it. */ 1113 break; 1114 1115 /* Not yet found. */ 1116 cp = strchr (cp, config.rpath_separator); 1117 if (cp != NULL) 1118 ++cp; 1119 } 1120 while (cp != NULL); 1121 1122 if (cp == NULL) 1123 { 1124 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1125 sprintf (buf, "%s%c%s", command_line.rpath, 1126 config.rpath_separator, optarg); 1127 free (command_line.rpath); 1128 command_line.rpath = buf; 1129 } 1130 } 1131 break; 1132 case OPTION_RPATH_LINK: 1133 if (command_line.rpath_link == NULL) 1134 command_line.rpath_link = xstrdup (optarg); 1135 else 1136 { 1137 char *buf; 1138 1139 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1140 + strlen (optarg) 1141 + 2); 1142 sprintf (buf, "%s%c%s", command_line.rpath_link, 1143 config.rpath_separator, optarg); 1144 free (command_line.rpath_link); 1145 command_line.rpath_link = buf; 1146 } 1147 break; 1148 case OPTION_NO_RELAX: 1149 DISABLE_RELAXATION; 1150 break; 1151 case OPTION_RELAX: 1152 ENABLE_RELAXATION; 1153 break; 1154 case OPTION_RETAIN_SYMBOLS_FILE: 1155 add_keepsyms_file (optarg); 1156 break; 1157 case 'S': 1158 link_info.strip = strip_debugger; 1159 break; 1160 case 's': 1161 link_info.strip = strip_all; 1162 break; 1163 case OPTION_STRIP_DISCARDED: 1164 link_info.strip_discarded = TRUE; 1165 break; 1166 case OPTION_NO_STRIP_DISCARDED: 1167 link_info.strip_discarded = FALSE; 1168 break; 1169 case OPTION_DISABLE_MULTIPLE_DEFS_ABS: 1170 link_info.prohibit_multiple_definition_absolute = TRUE; 1171 break; 1172 case OPTION_SHARED: 1173 if (config.has_shared) 1174 { 1175 if (bfd_link_relocatable (&link_info)) 1176 einfo (_("%F%P: -r and %s may not be used together\n"), 1177 "-shared"); 1178 1179 link_info.type = type_dll; 1180 /* When creating a shared library, the default 1181 behaviour is to ignore any unresolved references. */ 1182 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1183 link_info.unresolved_syms_in_objects = RM_IGNORE; 1184 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1185 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1186 } 1187 else 1188 einfo (_("%F%P: -shared not supported\n")); 1189 break; 1190 case OPTION_PIE: 1191 if (config.has_shared) 1192 { 1193 if (bfd_link_relocatable (&link_info)) 1194 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie"); 1195 1196 link_info.type = type_pie; 1197 } 1198 else 1199 einfo (_("%F%P: -pie not supported\n")); 1200 break; 1201 case 'h': /* Used on Solaris. */ 1202 case OPTION_SONAME: 1203 if (optarg[0] == '\0' && command_line.soname 1204 && command_line.soname[0]) 1205 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1206 else 1207 command_line.soname = optarg; 1208 break; 1209 case OPTION_SORT_COMMON: 1210 if (optarg == NULL 1211 || strcmp (optarg, N_("descending")) == 0) 1212 config.sort_common = sort_descending; 1213 else if (strcmp (optarg, N_("ascending")) == 0) 1214 config.sort_common = sort_ascending; 1215 else 1216 einfo (_("%F%P: invalid common section sorting option: %s\n"), 1217 optarg); 1218 break; 1219 case OPTION_SORT_SECTION: 1220 if (strcmp (optarg, N_("name")) == 0) 1221 sort_section = by_name; 1222 else if (strcmp (optarg, N_("alignment")) == 0) 1223 sort_section = by_alignment; 1224 else 1225 einfo (_("%F%P: invalid section sorting option: %s\n"), 1226 optarg); 1227 break; 1228 case OPTION_STATS: 1229 config.stats = TRUE; 1230 break; 1231 case OPTION_SYMBOLIC: 1232 command_line.symbolic = symbolic; 1233 break; 1234 case OPTION_SYMBOLIC_FUNCTIONS: 1235 command_line.symbolic = symbolic_functions; 1236 break; 1237 case 't': 1238 trace_files = TRUE; 1239 break; 1240 case 'T': 1241 previous_script_handle = saved_script_handle; 1242 ldfile_open_command_file (optarg); 1243 parser_input = input_script; 1244 yyparse (); 1245 previous_script_handle = NULL; 1246 break; 1247 case OPTION_DEFAULT_SCRIPT: 1248 command_line.default_script = optarg; 1249 break; 1250 case OPTION_SECTION_START: 1251 { 1252 char *optarg2; 1253 char *sec_name; 1254 int len; 1255 1256 /* Check for <something>=<somthing>... */ 1257 optarg2 = strchr (optarg, '='); 1258 if (optarg2 == NULL) 1259 einfo (_("%F%P: invalid argument to option" 1260 " \"--section-start\"\n")); 1261 1262 optarg2++; 1263 1264 /* So far so good. Are all the args present? */ 1265 if ((*optarg == '\0') || (*optarg2 == '\0')) 1266 einfo (_("%F%P: missing argument(s) to option" 1267 " \"--section-start\"\n")); 1268 1269 /* We must copy the section name as set_section_start 1270 doesn't do it for us. */ 1271 len = optarg2 - optarg; 1272 sec_name = (char *) xmalloc (len); 1273 memcpy (sec_name, optarg, len - 1); 1274 sec_name[len - 1] = 0; 1275 1276 /* Then set it... */ 1277 set_section_start (sec_name, optarg2); 1278 } 1279 break; 1280 case OPTION_TARGET_HELP: 1281 /* Mention any target specific options. */ 1282 ldemul_list_emulation_options (stdout); 1283 exit (0); 1284 case OPTION_TBSS: 1285 set_segment_start (".bss", optarg); 1286 break; 1287 case OPTION_TDATA: 1288 set_segment_start (".data", optarg); 1289 break; 1290 case OPTION_TTEXT: 1291 set_segment_start (".text", optarg); 1292 break; 1293 case OPTION_TTEXT_SEGMENT: 1294 set_segment_start (".text-segment", optarg); 1295 break; 1296 case OPTION_TRODATA_SEGMENT: 1297 set_segment_start (".rodata-segment", optarg); 1298 break; 1299 case OPTION_TLDATA_SEGMENT: 1300 set_segment_start (".ldata-segment", optarg); 1301 break; 1302 case OPTION_TRADITIONAL_FORMAT: 1303 link_info.traditional_format = TRUE; 1304 break; 1305 case OPTION_TASK_LINK: 1306 link_info.task_link = TRUE; 1307 /* Fall through. */ 1308 case OPTION_UR: 1309 if (bfd_link_pic (&link_info)) 1310 einfo (_("%F%P: -r and %s may not be used together\n"), 1311 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1312 1313 link_info.type = type_relocatable; 1314 config.build_constructors = TRUE; 1315 config.magic_demand_paged = FALSE; 1316 config.text_read_only = FALSE; 1317 input_flags.dynamic = FALSE; 1318 break; 1319 case 'u': 1320 ldlang_add_undef (optarg, TRUE); 1321 break; 1322 case OPTION_REQUIRE_DEFINED_SYMBOL: 1323 ldlang_add_require_defined (optarg); 1324 break; 1325 case OPTION_UNIQUE: 1326 if (optarg != NULL) 1327 lang_add_unique (optarg); 1328 else 1329 config.unique_orphan_sections = TRUE; 1330 break; 1331 case OPTION_VERBOSE: 1332 ldversion (1); 1333 version_printed = TRUE; 1334 verbose = TRUE; 1335 overflow_cutoff_limit = -2; 1336 if (optarg != NULL) 1337 { 1338 char *end; 1339 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1340 if (*end) 1341 einfo (_("%F%P: invalid number `%s'\n"), optarg); 1342 #ifdef ENABLE_PLUGINS 1343 report_plugin_symbols = level > 1; 1344 #endif /* ENABLE_PLUGINS */ 1345 } 1346 break; 1347 case 'v': 1348 ldversion (0); 1349 version_printed = TRUE; 1350 break; 1351 case 'V': 1352 ldversion (1); 1353 version_printed = TRUE; 1354 break; 1355 case OPTION_VERSION: 1356 ldversion (2); 1357 xexit (0); 1358 break; 1359 case OPTION_VERSION_SCRIPT: 1360 /* This option indicates a small script that only specifies 1361 version information. Read it, but don't assume that 1362 we've seen a linker script. */ 1363 { 1364 FILE *hold_script_handle; 1365 1366 hold_script_handle = saved_script_handle; 1367 ldfile_open_command_file (optarg); 1368 saved_script_handle = hold_script_handle; 1369 parser_input = input_version_script; 1370 yyparse (); 1371 } 1372 break; 1373 case OPTION_VERSION_EXPORTS_SECTION: 1374 /* This option records a version symbol to be applied to the 1375 symbols listed for export to be found in the object files 1376 .exports sections. */ 1377 command_line.version_exports_section = optarg; 1378 break; 1379 case OPTION_DYNAMIC_LIST_DATA: 1380 command_line.dynamic_list = dynamic_list_data; 1381 if (command_line.symbolic == symbolic) 1382 command_line.symbolic = symbolic_unset; 1383 break; 1384 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1385 lang_append_dynamic_list_cpp_typeinfo (); 1386 if (command_line.dynamic_list != dynamic_list_data) 1387 command_line.dynamic_list = dynamic_list; 1388 if (command_line.symbolic == symbolic) 1389 command_line.symbolic = symbolic_unset; 1390 break; 1391 case OPTION_DYNAMIC_LIST_CPP_NEW: 1392 lang_append_dynamic_list_cpp_new (); 1393 if (command_line.dynamic_list != dynamic_list_data) 1394 command_line.dynamic_list = dynamic_list; 1395 if (command_line.symbolic == symbolic) 1396 command_line.symbolic = symbolic_unset; 1397 break; 1398 case OPTION_DYNAMIC_LIST: 1399 /* This option indicates a small script that only specifies 1400 a dynamic list. Read it, but don't assume that we've 1401 seen a linker script. */ 1402 { 1403 FILE *hold_script_handle; 1404 1405 hold_script_handle = saved_script_handle; 1406 ldfile_open_command_file (optarg); 1407 saved_script_handle = hold_script_handle; 1408 parser_input = input_dynamic_list; 1409 yyparse (); 1410 } 1411 if (command_line.dynamic_list != dynamic_list_data) 1412 command_line.dynamic_list = dynamic_list; 1413 if (command_line.symbolic == symbolic) 1414 command_line.symbolic = symbolic_unset; 1415 break; 1416 case OPTION_WARN_COMMON: 1417 config.warn_common = TRUE; 1418 break; 1419 case OPTION_WARN_CONSTRUCTORS: 1420 config.warn_constructors = TRUE; 1421 break; 1422 case OPTION_WARN_FATAL: 1423 config.fatal_warnings = TRUE; 1424 break; 1425 case OPTION_NO_WARN_FATAL: 1426 config.fatal_warnings = FALSE; 1427 break; 1428 case OPTION_WARN_MULTIPLE_GP: 1429 config.warn_multiple_gp = TRUE; 1430 break; 1431 case OPTION_WARN_ONCE: 1432 config.warn_once = TRUE; 1433 break; 1434 case OPTION_WARN_SECTION_ALIGN: 1435 config.warn_section_align = TRUE; 1436 break; 1437 case OPTION_WARN_SHARED_TEXTREL: 1438 link_info.warn_shared_textrel = TRUE; 1439 break; 1440 case OPTION_WARN_ALTERNATE_EM: 1441 link_info.warn_alternate_em = TRUE; 1442 break; 1443 case OPTION_WHOLE_ARCHIVE: 1444 input_flags.whole_archive = TRUE; 1445 break; 1446 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1447 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1448 break; 1449 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1450 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1451 break; 1452 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1453 input_flags.add_DT_NEEDED_for_regular = TRUE; 1454 break; 1455 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1456 input_flags.add_DT_NEEDED_for_regular = FALSE; 1457 break; 1458 case OPTION_WRAP: 1459 add_wrap (optarg); 1460 break; 1461 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1462 add_ignoresym (&link_info, optarg); 1463 break; 1464 case OPTION_DISCARD_NONE: 1465 link_info.discard = discard_none; 1466 break; 1467 case 'X': 1468 link_info.discard = discard_l; 1469 break; 1470 case 'x': 1471 link_info.discard = discard_all; 1472 break; 1473 case 'Y': 1474 if (CONST_STRNEQ (optarg, "P,")) 1475 optarg += 2; 1476 if (default_dirlist != NULL) 1477 free (default_dirlist); 1478 default_dirlist = xstrdup (optarg); 1479 break; 1480 case 'y': 1481 add_ysym (optarg); 1482 break; 1483 case OPTION_SPARE_DYNAMIC_TAGS: 1484 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1485 break; 1486 case OPTION_SPLIT_BY_RELOC: 1487 if (optarg != NULL) 1488 config.split_by_reloc = strtoul (optarg, NULL, 0); 1489 else 1490 config.split_by_reloc = 32768; 1491 break; 1492 case OPTION_SPLIT_BY_FILE: 1493 if (optarg != NULL) 1494 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1495 else 1496 config.split_by_file = 1; 1497 break; 1498 case OPTION_CHECK_SECTIONS: 1499 command_line.check_section_addresses = 1; 1500 break; 1501 case OPTION_NO_CHECK_SECTIONS: 1502 command_line.check_section_addresses = 0; 1503 break; 1504 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1505 command_line.accept_unknown_input_arch = TRUE; 1506 break; 1507 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1508 command_line.accept_unknown_input_arch = FALSE; 1509 break; 1510 case '(': 1511 lang_enter_group (); 1512 ingroup++; 1513 break; 1514 case ')': 1515 if (! ingroup) 1516 einfo (_("%F%P: group ended before it began (--help for usage)\n")); 1517 1518 lang_leave_group (); 1519 ingroup--; 1520 break; 1521 1522 case OPTION_INIT: 1523 link_info.init_function = optarg; 1524 break; 1525 1526 case OPTION_FINI: 1527 link_info.fini_function = optarg; 1528 break; 1529 1530 case OPTION_REDUCE_MEMORY_OVERHEADS: 1531 link_info.reduce_memory_overheads = TRUE; 1532 if (config.hash_table_size == 0) 1533 config.hash_table_size = 1021; 1534 break; 1535 1536 case OPTION_HASH_SIZE: 1537 { 1538 bfd_size_type new_size; 1539 1540 new_size = strtoul (optarg, NULL, 0); 1541 if (new_size) 1542 config.hash_table_size = new_size; 1543 else 1544 einfo (_("%X%P: --hash-size needs a numeric argument\n")); 1545 } 1546 break; 1547 1548 case OPTION_PUSH_STATE: 1549 input_flags.pushed = xmemdup (&input_flags, 1550 sizeof (input_flags), 1551 sizeof (input_flags)); 1552 break; 1553 1554 case OPTION_POP_STATE: 1555 if (input_flags.pushed == NULL) 1556 einfo (_("%F%P: no state pushed before popping\n")); 1557 else 1558 { 1559 struct lang_input_statement_flags *oldp = input_flags.pushed; 1560 memcpy (&input_flags, oldp, sizeof (input_flags)); 1561 free (oldp); 1562 } 1563 break; 1564 1565 case OPTION_PRINT_MEMORY_USAGE: 1566 command_line.print_memory_usage = TRUE; 1567 break; 1568 1569 case OPTION_ORPHAN_HANDLING: 1570 if (strcasecmp (optarg, "place") == 0) 1571 config.orphan_handling = orphan_handling_place; 1572 else if (strcasecmp (optarg, "warn") == 0) 1573 config.orphan_handling = orphan_handling_warn; 1574 else if (strcasecmp (optarg, "error") == 0) 1575 config.orphan_handling = orphan_handling_error; 1576 else if (strcasecmp (optarg, "discard") == 0) 1577 config.orphan_handling = orphan_handling_discard; 1578 else 1579 einfo (_("%F%P: invalid argument to option" 1580 " \"--orphan-handling\"\n")); 1581 break; 1582 } 1583 } 1584 1585 if (command_line.soname && command_line.soname[0] == '\0') 1586 { 1587 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1588 command_line.soname = NULL; 1589 } 1590 1591 while (ingroup) 1592 { 1593 lang_leave_group (); 1594 ingroup--; 1595 } 1596 1597 if (default_dirlist != NULL) 1598 { 1599 set_default_dirlist (default_dirlist); 1600 free (default_dirlist); 1601 } 1602 1603 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1604 /* FIXME: Should we allow emulations a chance to set this ? */ 1605 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1606 1607 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1608 /* FIXME: Should we allow emulations a chance to set this ? */ 1609 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1610 1611 if (bfd_link_relocatable (&link_info) 1612 && command_line.check_section_addresses < 0) 1613 command_line.check_section_addresses = 0; 1614 1615 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1616 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1617 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1618 for PIC outputs. -Bsymbolic overrides all others and vice versa. */ 1619 switch (command_line.symbolic) 1620 { 1621 case symbolic_unset: 1622 break; 1623 case symbolic: 1624 /* -Bsymbolic is for PIC output only. */ 1625 if (bfd_link_pic (&link_info)) 1626 { 1627 link_info.symbolic = TRUE; 1628 /* Should we free the unused memory? */ 1629 link_info.dynamic_list = NULL; 1630 command_line.dynamic_list = dynamic_list_unset; 1631 } 1632 break; 1633 case symbolic_functions: 1634 /* -Bsymbolic-functions is for PIC output only. */ 1635 if (bfd_link_pic (&link_info)) 1636 command_line.dynamic_list = dynamic_list_data; 1637 break; 1638 } 1639 1640 switch (command_line.dynamic_list) 1641 { 1642 case dynamic_list_unset: 1643 break; 1644 case dynamic_list_data: 1645 link_info.dynamic_data = TRUE; 1646 /* Fall through. */ 1647 case dynamic_list: 1648 link_info.dynamic = TRUE; 1649 break; 1650 } 1651 1652 if (!bfd_link_dll (&link_info)) 1653 { 1654 if (command_line.filter_shlib) 1655 einfo (_("%F%P: -F may not be used without -shared\n")); 1656 if (command_line.auxiliary_filters) 1657 einfo (_("%F%P: -f may not be used without -shared\n")); 1658 } 1659 1660 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1661 don't see how else this can be handled, since in this case we 1662 must preserve all externally visible symbols. */ 1663 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1664 { 1665 link_info.strip = strip_debugger; 1666 if (link_info.discard == discard_sec_merge) 1667 link_info.discard = discard_all; 1668 } 1669 } 1670 1671 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1672 library search path. */ 1673 1674 static void 1675 set_default_dirlist (char *dirlist_ptr) 1676 { 1677 char *p; 1678 1679 while (1) 1680 { 1681 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1682 if (p != NULL) 1683 *p = '\0'; 1684 if (*dirlist_ptr != '\0') 1685 ldfile_add_library_path (dirlist_ptr, TRUE); 1686 if (p == NULL) 1687 break; 1688 dirlist_ptr = p + 1; 1689 } 1690 } 1691 1692 static void 1693 set_section_start (char *sect, char *valstr) 1694 { 1695 const char *end; 1696 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1697 if (*end) 1698 einfo (_("%F%P: invalid hex number `%s'\n"), valstr); 1699 lang_section_start (sect, exp_intop (val), NULL); 1700 } 1701 1702 static void 1703 set_segment_start (const char *section, char *valstr) 1704 { 1705 const char *name; 1706 const char *end; 1707 segment_type *seg; 1708 1709 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1710 if (*end) 1711 einfo (_("%F%P: invalid hex number `%s'\n"), valstr); 1712 /* If we already have an entry for this segment, update the existing 1713 value. */ 1714 name = section + 1; 1715 for (seg = segments; seg; seg = seg->next) 1716 if (strcmp (seg->name, name) == 0) 1717 { 1718 seg->value = val; 1719 lang_section_start (section, exp_intop (val), seg); 1720 return; 1721 } 1722 /* There was no existing value so we must create a new segment 1723 entry. */ 1724 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1725 seg->name = name; 1726 seg->value = val; 1727 seg->used = FALSE; 1728 /* Add it to the linked list of segments. */ 1729 seg->next = segments; 1730 segments = seg; 1731 /* Historically, -Ttext and friends set the base address of a 1732 particular section. For backwards compatibility, we still do 1733 that. If a SEGMENT_START directive is seen, the section address 1734 assignment will be disabled. */ 1735 lang_section_start (section, exp_intop (val), seg); 1736 } 1737 1738 static void 1739 elf_shlib_list_options (FILE *file) 1740 { 1741 fprintf (file, _("\ 1742 --audit=AUDITLIB Specify a library to use for auditing\n")); 1743 fprintf (file, _("\ 1744 -Bgroup Selects group name lookup rules for DSO\n")); 1745 fprintf (file, _("\ 1746 --disable-new-dtags Disable new dynamic tags\n")); 1747 fprintf (file, _("\ 1748 --enable-new-dtags Enable new dynamic tags\n")); 1749 fprintf (file, _("\ 1750 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1751 fprintf (file, _("\ 1752 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n")); 1753 fprintf (file, _("\ 1754 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1755 fprintf (file, _("\ 1756 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1757 fprintf (file, _("\ 1758 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1759 Specify a library to use for auditing dependencies\n")); 1760 fprintf (file, _("\ 1761 -z combreloc Merge dynamic relocs into one section and sort\n")); 1762 fprintf (file, _("\ 1763 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1764 fprintf (file, _("\ 1765 -z global Make symbols in DSO available for subsequently\n\ 1766 loaded objects\n")); 1767 fprintf (file, _("\ 1768 -z initfirst Mark DSO to be initialized first at runtime\n")); 1769 fprintf (file, _("\ 1770 -z interpose Mark object to interpose all DSOs but executable\n")); 1771 fprintf (file, _("\ 1772 -z lazy Mark object lazy runtime binding (default)\n")); 1773 fprintf (file, _("\ 1774 -z loadfltr Mark object requiring immediate process\n")); 1775 fprintf (file, _("\ 1776 -z nocopyreloc Don't create copy relocs\n")); 1777 fprintf (file, _("\ 1778 -z nodefaultlib Mark object not to use default search paths\n")); 1779 fprintf (file, _("\ 1780 -z nodelete Mark DSO non-deletable at runtime\n")); 1781 fprintf (file, _("\ 1782 -z nodlopen Mark DSO not available to dlopen\n")); 1783 fprintf (file, _("\ 1784 -z nodump Mark DSO not available to dldump\n")); 1785 fprintf (file, _("\ 1786 -z now Mark object non-lazy runtime binding\n")); 1787 fprintf (file, _("\ 1788 -z origin Mark object requiring immediate $ORIGIN\n\ 1789 processing at runtime\n")); 1790 #if DEFAULT_LD_Z_RELRO 1791 fprintf (file, _("\ 1792 -z relro Create RELRO program header (default)\n")); 1793 fprintf (file, _("\ 1794 -z norelro Don't create RELRO program header\n")); 1795 #else 1796 fprintf (file, _("\ 1797 -z relro Create RELRO program header\n")); 1798 fprintf (file, _("\ 1799 -z norelro Don't create RELRO program header (default)\n")); 1800 #endif 1801 #if DEFAULT_LD_Z_SEPARATE_CODE 1802 fprintf (file, _("\ 1803 -z separate-code Create separate code program header (default)\n")); 1804 fprintf (file, _("\ 1805 -z noseparate-code Don't create separate code program header\n")); 1806 #else 1807 fprintf (file, _("\ 1808 -z separate-code Create separate code program header\n")); 1809 fprintf (file, _("\ 1810 -z noseparate-code Don't create separate code program header (default)\n")); 1811 #endif 1812 fprintf (file, _("\ 1813 -z common Generate common symbols with STT_COMMON type\n")); 1814 fprintf (file, _("\ 1815 -z nocommon Generate common symbols with STT_OBJECT type\n")); 1816 fprintf (file, _("\ 1817 -z stack-size=SIZE Set size of stack segment\n")); 1818 fprintf (file, _("\ 1819 -z text Treat DT_TEXTREL in shared object as error\n")); 1820 fprintf (file, _("\ 1821 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1822 fprintf (file, _("\ 1823 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1824 } 1825 1826 static void 1827 elf_static_list_options (FILE *file) 1828 { 1829 fprintf (file, _("\ 1830 --build-id[=STYLE] Generate build ID note\n")); 1831 fprintf (file, _("\ 1832 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1833 Compress DWARF debug sections using zlib\n")); 1834 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1835 fprintf (file, _("\ 1836 Default: zlib-gabi\n")); 1837 #else 1838 fprintf (file, _("\ 1839 Default: none\n")); 1840 #endif 1841 fprintf (file, _("\ 1842 -z common-page-size=SIZE Set common page size to SIZE\n")); 1843 fprintf (file, _("\ 1844 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1845 fprintf (file, _("\ 1846 -z defs Report unresolved symbols in object files\n")); 1847 fprintf (file, _("\ 1848 -z muldefs Allow multiple definitions\n")); 1849 fprintf (file, _("\ 1850 -z execstack Mark executable as requiring executable stack\n")); 1851 fprintf (file, _("\ 1852 -z noexecstack Mark executable as not requiring executable stack\n")); 1853 fprintf (file, _("\ 1854 -z globalaudit Mark executable requiring global auditing\n")); 1855 } 1856 1857 static void 1858 elf_plt_unwind_list_options (FILE *file) 1859 { 1860 fprintf (file, _("\ 1861 --ld-generated-unwind-info Generate exception handling info for PLT\n")); 1862 fprintf (file, _("\ 1863 --no-ld-generated-unwind-info\n\ 1864 Don't generate exception handling info for PLT\n")); 1865 } 1866 1867 static void 1868 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1869 bfd_boolean plt_unwind) 1870 { 1871 if (!elf) 1872 return; 1873 printf (_("ELF emulations:\n")); 1874 if (plt_unwind) 1875 elf_plt_unwind_list_options (file); 1876 elf_static_list_options (file); 1877 if (shlib) 1878 elf_shlib_list_options (file); 1879 } 1880 1881 1882 /* Print help messages for the options. */ 1884 1885 static void 1886 help (void) 1887 { 1888 unsigned i; 1889 const char **targets, **pp; 1890 int len; 1891 1892 printf (_("Usage: %s [options] file...\n"), program_name); 1893 1894 printf (_("Options:\n")); 1895 for (i = 0; i < OPTION_COUNT; i++) 1896 { 1897 if (ld_options[i].doc != NULL) 1898 { 1899 bfd_boolean comma; 1900 unsigned j; 1901 1902 printf (" "); 1903 1904 comma = FALSE; 1905 len = 2; 1906 1907 j = i; 1908 do 1909 { 1910 if (ld_options[j].shortopt != '\0' 1911 && ld_options[j].control != NO_HELP) 1912 { 1913 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1914 len += (comma ? 2 : 0) + 2; 1915 if (ld_options[j].arg != NULL) 1916 { 1917 if (ld_options[j].opt.has_arg != optional_argument) 1918 { 1919 printf (" "); 1920 ++len; 1921 } 1922 printf ("%s", _(ld_options[j].arg)); 1923 len += strlen (_(ld_options[j].arg)); 1924 } 1925 comma = TRUE; 1926 } 1927 ++j; 1928 } 1929 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1930 1931 j = i; 1932 do 1933 { 1934 if (ld_options[j].opt.name != NULL 1935 && ld_options[j].control != NO_HELP) 1936 { 1937 int two_dashes = 1938 (ld_options[j].control == TWO_DASHES 1939 || ld_options[j].control == EXACTLY_TWO_DASHES); 1940 1941 printf ("%s-%s%s", 1942 comma ? ", " : "", 1943 two_dashes ? "-" : "", 1944 ld_options[j].opt.name); 1945 len += ((comma ? 2 : 0) 1946 + 1 1947 + (two_dashes ? 1 : 0) 1948 + strlen (ld_options[j].opt.name)); 1949 if (ld_options[j].arg != NULL) 1950 { 1951 printf (" %s", _(ld_options[j].arg)); 1952 len += 1 + strlen (_(ld_options[j].arg)); 1953 } 1954 comma = TRUE; 1955 } 1956 ++j; 1957 } 1958 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1959 1960 if (len >= 30) 1961 { 1962 printf ("\n"); 1963 len = 0; 1964 } 1965 1966 for (; len < 30; len++) 1967 putchar (' '); 1968 1969 printf ("%s\n", _(ld_options[i].doc)); 1970 } 1971 } 1972 printf (_(" @FILE")); 1973 for (len = strlen (" @FILE"); len < 30; len++) 1974 putchar (' '); 1975 printf (_("Read options from FILE\n")); 1976 1977 /* Note: Various tools (such as libtool) depend upon the 1978 format of the listings below - do not change them. */ 1979 /* xgettext:c-format */ 1980 printf (_("%s: supported targets:"), program_name); 1981 targets = bfd_target_list (); 1982 for (pp = targets; *pp != NULL; pp++) 1983 printf (" %s", *pp); 1984 free (targets); 1985 printf ("\n"); 1986 1987 /* xgettext:c-format */ 1988 printf (_("%s: supported emulations: "), program_name); 1989 ldemul_list_emulations (stdout); 1990 printf ("\n"); 1991 1992 /* xgettext:c-format */ 1993 printf (_("%s: emulation specific options:\n"), program_name); 1994 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 1995 ELF_PLT_UNWIND_LIST_OPTIONS); 1996 ldemul_list_emulation_options (stdout); 1997 printf ("\n"); 1998 1999 if (REPORT_BUGS_TO[0]) 2000 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 2001 } 2002
Indexes created Sun Mar 01 05:31:48 UTC 2026