1 /* Parse options for the GNU linker. 2 Copyright (C) 1991-2016 Free Software Foundation, Inc. 3 4 This file is part of the GNU Binutils. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "sysdep.h" 22 #include "bfd.h" 23 #include "bfdver.h" 24 #include "libiberty.h" 25 #include <stdio.h> 26 #include <string.h> 27 #include "safe-ctype.h" 28 #include "getopt.h" 29 #include "bfdlink.h" 30 #include "ld.h" 31 #include "ldmain.h" 32 #include "ldmisc.h" 33 #include "ldexp.h" 34 #include "ldlang.h" 35 #include <ldgram.h> 36 #include "ldlex.h" 37 #include "ldfile.h" 38 #include "ldver.h" 39 #include "ldemul.h" 40 #include "demangle.h" 41 #ifdef ENABLE_PLUGINS 42 #include "plugin.h" 43 #endif /* ENABLE_PLUGINS */ 44 45 #ifndef PATH_SEPARATOR 46 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) 47 #define PATH_SEPARATOR ';' 48 #else 49 #define PATH_SEPARATOR ':' 50 #endif 51 #endif 52 53 /* Somewhere above, sys/stat.h got included . . . . */ 54 #if !defined(S_ISDIR) && defined(S_IFDIR) 55 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 56 #endif 57 58 static void set_default_dirlist (char *); 59 static void set_section_start (char *, char *); 60 static void set_segment_start (const char *, char *); 61 static void help (void); 62 63 /* The long options. This structure is used for both the option 64 parsing and the help text. */ 65 66 enum control_enum { 67 /* Use one dash before long option name. */ 68 ONE_DASH = 1, 69 /* Use two dashes before long option name. */ 70 TWO_DASHES = 2, 71 /* Only accept two dashes before the long option name. 72 This is an overloading of the use of this enum, since originally it 73 was only intended to tell the --help display function how to display 74 the long option name. This feature was added in order to resolve 75 the confusion about the -omagic command line switch. Is it setting 76 the output file name to "magic" or is it setting the NMAGIC flag on 77 the output ? It has been decided that it is setting the output file 78 name, and that if you want to set the NMAGIC flag you should use -N 79 or --omagic. */ 80 EXACTLY_TWO_DASHES, 81 /* Don't mention this option in --help output. */ 82 NO_HELP 83 }; 84 85 struct ld_option 86 { 87 /* The long option information. */ 88 struct option opt; 89 /* The short option with the same meaning ('\0' if none). */ 90 char shortopt; 91 /* The name of the argument (NULL if none). */ 92 const char *arg; 93 /* The documentation string. If this is NULL, this is a synonym for 94 the previous option. */ 95 const char *doc; 96 enum control_enum control; 97 }; 98 99 static const struct ld_option ld_options[] = 100 { 101 { {NULL, required_argument, NULL, '\0'}, 102 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"), 103 ONE_DASH }, 104 { {"architecture", required_argument, NULL, 'A'}, 105 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES }, 106 { {"format", required_argument, NULL, 'b'}, 107 'b', N_("TARGET"), N_("Specify target for following input files"), 108 TWO_DASHES }, 109 { {"mri-script", required_argument, NULL, 'c'}, 110 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES }, 111 { {"dc", no_argument, NULL, 'd'}, 112 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH }, 113 { {"dp", no_argument, NULL, 'd'}, 114 '\0', NULL, NULL, ONE_DASH }, 115 { {"entry", required_argument, NULL, 'e'}, 116 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES }, 117 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, 118 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES }, 119 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC}, 120 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES }, 121 { {"EB", no_argument, NULL, OPTION_EB}, 122 '\0', NULL, N_("Link big-endian objects"), ONE_DASH }, 123 { {"EL", no_argument, NULL, OPTION_EL}, 124 '\0', NULL, N_("Link little-endian objects"), ONE_DASH }, 125 { {"auxiliary", required_argument, NULL, 'f'}, 126 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"), 127 TWO_DASHES }, 128 { {"filter", required_argument, NULL, 'F'}, 129 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), 130 TWO_DASHES }, 131 { {NULL, no_argument, NULL, '\0'}, 132 'g', NULL, N_("Ignored"), ONE_DASH }, 133 { {"gpsize", required_argument, NULL, 'G'}, 134 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"), 135 TWO_DASHES }, 136 { {"soname", required_argument, NULL, OPTION_SONAME}, 137 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH }, 138 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, 139 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), 140 TWO_DASHES }, 141 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER}, 142 '\0', NULL, N_("Produce an executable with no program interpreter header"), 143 TWO_DASHES }, 144 { {"library", required_argument, NULL, 'l'}, 145 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 146 { {"library-path", required_argument, NULL, 'L'}, 147 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 148 TWO_DASHES }, 149 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 150 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 151 { {NULL, required_argument, NULL, '\0'}, 152 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 153 { {"print-map", no_argument, NULL, 'M'}, 154 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 155 { {"nmagic", no_argument, NULL, 'n'}, 156 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 157 { {"omagic", no_argument, NULL, 'N'}, 158 'N', NULL, N_("Do not page align data, do not make text readonly"), 159 EXACTLY_TWO_DASHES }, 160 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 161 '\0', NULL, N_("Page align data, make text readonly"), 162 EXACTLY_TWO_DASHES }, 163 { {"output", required_argument, NULL, 'o'}, 164 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 165 { {NULL, required_argument, NULL, '\0'}, 166 'O', NULL, N_("Optimize output file"), ONE_DASH }, 167 #ifdef ENABLE_PLUGINS 168 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 169 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 170 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 171 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 172 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 173 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 174 ONE_DASH }, 175 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 176 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 177 ONE_DASH }, 178 #endif /* ENABLE_PLUGINS */ 179 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 180 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 181 ONE_DASH }, 182 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 183 '\0', NULL, N_("Ignored for gold option compatibility"), 184 TWO_DASHES }, 185 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, 186 '\0', NULL, N_("Ignored for gold option compatibility"), 187 TWO_DASHES }, 188 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 189 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 190 { {"emit-relocs", no_argument, NULL, 'q'}, 191 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 192 { {"relocatable", no_argument, NULL, 'r'}, 193 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 194 { {NULL, no_argument, NULL, '\0'}, 195 'i', NULL, NULL, ONE_DASH }, 196 { {"just-symbols", required_argument, NULL, 'R'}, 197 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 198 TWO_DASHES }, 199 { {"strip-all", no_argument, NULL, 's'}, 200 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 201 { {"strip-debug", no_argument, NULL, 'S'}, 202 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 203 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 204 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 205 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 206 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 207 { {"trace", no_argument, NULL, 't'}, 208 't', NULL, N_("Trace file opens"), TWO_DASHES }, 209 { {"script", required_argument, NULL, 'T'}, 210 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 211 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 212 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 213 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 214 '\0', NULL, NULL, ONE_DASH }, 215 { {"undefined", required_argument, NULL, 'u'}, 216 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 217 TWO_DASHES }, 218 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, 219 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), 220 TWO_DASHES }, 221 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 222 '\0', N_("[=SECTION]"), 223 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 224 { {"Ur", no_argument, NULL, OPTION_UR}, 225 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 226 { {"version", no_argument, NULL, OPTION_VERSION}, 227 'v', NULL, N_("Print version information"), TWO_DASHES }, 228 { {NULL, no_argument, NULL, '\0'}, 229 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 230 { {"discard-all", no_argument, NULL, 'x'}, 231 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 232 { {"discard-locals", no_argument, NULL, 'X'}, 233 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 234 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 235 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 236 { {"trace-symbol", required_argument, NULL, 'y'}, 237 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 238 { {NULL, required_argument, NULL, '\0'}, 239 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 240 ONE_DASH }, 241 { {"start-group", no_argument, NULL, '('}, 242 '(', NULL, N_("Start a group"), TWO_DASHES }, 243 { {"end-group", no_argument, NULL, ')'}, 244 ')', NULL, N_("End a group"), TWO_DASHES }, 245 { {"accept-unknown-input-arch", no_argument, NULL, 246 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 247 '\0', NULL, 248 N_("Accept input files whose architecture cannot be determined"), 249 TWO_DASHES }, 250 { {"no-accept-unknown-input-arch", no_argument, NULL, 251 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 252 '\0', NULL, N_("Reject input files whose architecture is unknown"), 253 TWO_DASHES }, 254 255 /* The next two options are deprecated because of their similarity to 256 --as-needed and --no-as-needed. They have been replaced by 257 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 258 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 259 '\0', NULL, NULL, NO_HELP }, 260 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 261 '\0', NULL, NULL, NO_HELP }, 262 263 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 264 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 265 TWO_DASHES }, 266 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 267 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 268 " the command line"), 269 TWO_DASHES }, 270 { {"assert", required_argument, NULL, OPTION_ASSERT}, 271 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 272 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 273 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 274 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 275 '\0', NULL, NULL, ONE_DASH }, 276 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 277 '\0', NULL, NULL, ONE_DASH }, 278 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 279 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 280 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 281 '\0', NULL, NULL, ONE_DASH }, 282 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 283 '\0', NULL, NULL, ONE_DASH }, 284 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 285 '\0', NULL, NULL, ONE_DASH }, 286 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 287 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 288 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 289 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 290 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 291 '\0', NULL, N_("Check section addresses for overlaps (default)"), 292 TWO_DASHES }, 293 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 294 '\0', NULL, N_("Do not check section addresses for overlaps"), 295 TWO_DASHES }, 296 { {"copy-dt-needed-entries", no_argument, NULL, 297 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 298 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 299 TWO_DASHES }, 300 { {"no-copy-dt-needed-entries", no_argument, NULL, 301 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 302 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 303 TWO_DASHES }, 304 305 { {"cref", no_argument, NULL, OPTION_CREF}, 306 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 307 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 308 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 309 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 310 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 311 TWO_DASHES }, 312 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 313 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 314 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 315 '\0', NULL, N_("Treat warnings as errors"), 316 TWO_DASHES }, 317 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 318 '\0', NULL, N_("Do not treat warnings as errors (default)"), 319 TWO_DASHES }, 320 { {"fini", required_argument, NULL, OPTION_FINI}, 321 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 322 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 323 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 324 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 325 '\0', NULL, N_("Remove unused sections (on some targets)"), 326 TWO_DASHES }, 327 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 328 '\0', NULL, N_("Don't remove unused sections (default)"), 329 TWO_DASHES }, 330 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 331 '\0', NULL, N_("List removed unused sections on stderr"), 332 TWO_DASHES }, 333 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 334 '\0', NULL, N_("Do not list removed unused sections"), 335 TWO_DASHES }, 336 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 337 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 338 TWO_DASHES }, 339 { {"help", no_argument, NULL, OPTION_HELP}, 340 '\0', NULL, N_("Print option help"), TWO_DASHES }, 341 { {"init", required_argument, NULL, OPTION_INIT}, 342 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 343 { {"Map", required_argument, NULL, OPTION_MAP}, 344 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 345 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 346 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 347 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 348 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 349 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 350 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 351 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 352 '\0', NULL, N_("Do not allow unresolved references in object files"), 353 TWO_DASHES }, 354 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 355 '\0', NULL, N_("Allow unresolved references in shared libraries"), 356 TWO_DASHES }, 357 { {"no-allow-shlib-undefined", no_argument, NULL, 358 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 359 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 360 TWO_DASHES }, 361 { {"allow-multiple-definition", no_argument, NULL, 362 OPTION_ALLOW_MULTIPLE_DEFINITION}, 363 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 364 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 365 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 366 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 367 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 368 { {"default-imported-symver", no_argument, NULL, 369 OPTION_DEFAULT_IMPORTED_SYMVER}, 370 '\0', NULL, N_("Create default symbol version for imported symbols"), 371 TWO_DASHES }, 372 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 373 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 374 { {"no-warn-search-mismatch", no_argument, NULL, 375 OPTION_NO_WARN_SEARCH_MISMATCH}, 376 '\0', NULL, N_("Don't warn on finding an incompatible library"), 377 TWO_DASHES}, 378 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 379 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 380 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 381 '\0', NULL, N_("Create an output file even if errors occur"), 382 TWO_DASHES }, 383 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 384 '\0', NULL, NULL, NO_HELP }, 385 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 386 '\0', NULL, N_("Only use library directories specified on\n" 387 " the command line"), 388 ONE_DASH }, 389 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 390 '\0', N_("TARGET"), N_("Specify target of output file"), 391 EXACTLY_TWO_DASHES }, 392 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 393 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 394 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 395 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 396 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 397 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 398 { {"reduce-memory-overheads", no_argument, NULL, 399 OPTION_REDUCE_MEMORY_OVERHEADS}, 400 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 401 TWO_DASHES }, 402 { {"relax", no_argument, NULL, OPTION_RELAX}, 403 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 404 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 405 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 406 { {"retain-symbols-file", required_argument, NULL, 407 OPTION_RETAIN_SYMBOLS_FILE}, 408 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 409 { {"rpath", required_argument, NULL, OPTION_RPATH}, 410 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 411 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 412 '\0', N_("PATH"), N_("Set link time shared library search path"), 413 ONE_DASH }, 414 { {"shared", no_argument, NULL, OPTION_SHARED}, 415 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 416 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 417 '\0', NULL, NULL, ONE_DASH }, 418 { {"pie", no_argument, NULL, OPTION_PIE}, 419 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 420 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 421 '\0', NULL, NULL, TWO_DASHES }, 422 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 423 '\0', N_("[=ascending|descending]"), 424 N_("Sort common symbols by alignment [in specified order]"), 425 TWO_DASHES }, 426 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 427 '\0', NULL, NULL, NO_HELP }, 428 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 429 '\0', N_("name|alignment"), 430 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 431 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 432 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 433 TWO_DASHES }, 434 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 435 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 436 TWO_DASHES }, 437 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 438 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 439 TWO_DASHES }, 440 { {"stats", no_argument, NULL, OPTION_STATS}, 441 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 442 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 443 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 444 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 445 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 446 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 447 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 448 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 449 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 450 TWO_DASHES }, 451 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 452 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 453 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 454 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 455 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 456 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 457 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 458 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 459 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 460 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 461 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 462 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 463 { {"unresolved-symbols=<method>", required_argument, NULL, 464 OPTION_UNRESOLVED_SYMBOLS}, 465 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 466 " ignore-all, report-all, ignore-in-object-files,\n" 467 " ignore-in-shared-libs"), 468 TWO_DASHES }, 469 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 470 '\0', N_("[=NUMBER]"), 471 N_("Output lots of information during link"), TWO_DASHES }, 472 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 473 '\0', NULL, NULL, NO_HELP }, 474 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 475 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 476 { {"version-exports-section", required_argument, NULL, 477 OPTION_VERSION_EXPORTS_SECTION }, 478 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 479 " SYMBOL as the version."), 480 TWO_DASHES }, 481 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 482 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 483 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 484 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 485 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 486 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 487 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 488 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 489 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 490 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 491 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 492 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 493 TWO_DASHES }, 494 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 495 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 496 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 497 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 498 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 499 '\0', NULL, N_("Warn if start of section changes due to alignment"), 500 TWO_DASHES }, 501 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 502 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 503 TWO_DASHES }, 504 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 505 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 506 TWO_DASHES }, 507 { {"warn-unresolved-symbols", no_argument, NULL, 508 OPTION_WARN_UNRESOLVED_SYMBOLS}, 509 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 510 { {"error-unresolved-symbols", no_argument, NULL, 511 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 512 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 513 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 514 '\0', NULL, N_("Include all objects from following archives"), 515 TWO_DASHES }, 516 { {"wrap", required_argument, NULL, OPTION_WRAP}, 517 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 518 { {"ignore-unresolved-symbol", required_argument, NULL, 519 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 520 '\0', N_("SYMBOL"), 521 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 522 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 523 '\0', NULL, N_("Push state of flags governing input file handling"), 524 TWO_DASHES }, 525 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 526 '\0', NULL, N_("Pop state of flags governing input file handling"), 527 TWO_DASHES }, 528 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, 529 '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, 530 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, 531 '\0', N_("=MODE"), N_("Control how orphan sections are handled."), 532 TWO_DASHES }, 533 }; 534 535 #define OPTION_COUNT ARRAY_SIZE (ld_options) 536 537 void 538 parse_args (unsigned argc, char **argv) 539 { 540 unsigned i; 541 int is, il, irl; 542 int ingroup = 0; 543 char *default_dirlist = NULL; 544 char *shortopts; 545 struct option *longopts; 546 struct option *really_longopts; 547 int last_optind; 548 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 549 550 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 551 longopts = (struct option *) 552 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 553 really_longopts = (struct option *) 554 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 555 556 /* Starting the short option string with '-' is for programs that 557 expect options and other ARGV-elements in any order and that care about 558 the ordering of the two. We describe each non-option ARGV-element 559 as if it were the argument of an option with character code 1. */ 560 shortopts[0] = '-'; 561 is = 1; 562 il = 0; 563 irl = 0; 564 for (i = 0; i < OPTION_COUNT; i++) 565 { 566 if (ld_options[i].shortopt != '\0') 567 { 568 shortopts[is] = ld_options[i].shortopt; 569 ++is; 570 if (ld_options[i].opt.has_arg == required_argument 571 || ld_options[i].opt.has_arg == optional_argument) 572 { 573 shortopts[is] = ':'; 574 ++is; 575 if (ld_options[i].opt.has_arg == optional_argument) 576 { 577 shortopts[is] = ':'; 578 ++is; 579 } 580 } 581 } 582 if (ld_options[i].opt.name != NULL) 583 { 584 if (ld_options[i].control == EXACTLY_TWO_DASHES) 585 { 586 really_longopts[irl] = ld_options[i].opt; 587 ++irl; 588 } 589 else 590 { 591 longopts[il] = ld_options[i].opt; 592 ++il; 593 } 594 } 595 } 596 shortopts[is] = '\0'; 597 longopts[il].name = NULL; 598 really_longopts[irl].name = NULL; 599 600 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 601 602 /* The -G option is ambiguous on different platforms. Sometimes it 603 specifies the largest data size to put into the small data 604 section. Sometimes it is equivalent to --shared. Unfortunately, 605 the first form takes an argument, while the second does not. 606 607 We need to permit the --shared form because on some platforms, 608 such as Solaris, gcc -shared will pass -G to the linker. 609 610 To permit either usage, we look through the argument list. If we 611 find -G not followed by a number, we change it into --shared. 612 This will work for most normal cases. */ 613 for (i = 1; i < argc; i++) 614 if (strcmp (argv[i], "-G") == 0 615 && (i + 1 >= argc 616 || ! ISDIGIT (argv[i + 1][0]))) 617 argv[i] = (char *) "--shared"; 618 619 /* Because we permit long options to start with a single dash, and 620 we have a --library option, and the -l option is conventionally 621 used with an immediately following argument, we can have bad 622 results if somebody tries to use -l with a library whose name 623 happens to start with "ibrary", as in -li. We avoid problems by 624 simply turning -l into --library. This means that users will 625 have to use two dashes in order to use --library, which is OK 626 since that's how it is documented. 627 628 FIXME: It's possible that this problem can arise for other short 629 options as well, although the user does always have the recourse 630 of adding a space between the option and the argument. */ 631 for (i = 1; i < argc; i++) 632 { 633 if (argv[i][0] == '-' 634 && argv[i][1] == 'l' 635 && argv[i][2] != '\0') 636 { 637 char *n; 638 639 n = (char *) xmalloc (strlen (argv[i]) + 20); 640 sprintf (n, "--library=%s", argv[i] + 2); 641 argv[i] = n; 642 } 643 } 644 645 last_optind = -1; 646 while (1) 647 { 648 int longind; 649 int optc; 650 static unsigned int defsym_count; 651 652 /* Using last_optind lets us avoid calling ldemul_parse_args 653 multiple times on a single option, which would lead to 654 confusion in the internal static variables maintained by 655 getopt. This could otherwise happen for an argument like 656 -nx, in which the -n is parsed as a single option, and we 657 loop around to pick up the -x. */ 658 if (optind != last_optind) 659 if (ldemul_parse_args (argc, argv)) 660 continue; 661 662 /* getopt_long_only is like getopt_long, but '-' as well as '--' 663 can indicate a long option. */ 664 opterr = 0; 665 last_optind = optind; 666 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 667 if (optc == '?') 668 { 669 optind = last_optind; 670 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 671 } 672 673 if (ldemul_handle_option (optc)) 674 continue; 675 676 if (optc == -1) 677 break; 678 679 switch (optc) 680 { 681 case '?': 682 { 683 /* If the last word on the command line is an option that 684 requires an argument, getopt will refuse to recognise it. 685 Try to catch such options here and issue a more helpful 686 error message than just "unrecognized option". */ 687 int opt; 688 689 for (opt = ARRAY_SIZE (ld_options); opt--;) 690 if (ld_options[opt].opt.has_arg == required_argument 691 /* FIXME: There are a few short options that do not 692 have long equivalents, but which require arguments. 693 We should handle them too. */ 694 && ld_options[opt].opt.name != NULL 695 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 696 { 697 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 698 break; 699 } 700 701 if (opt == -1) 702 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 703 } 704 /* Fall through. */ 705 706 default: 707 einfo (_("%P%F: use the --help option for usage information\n")); 708 709 case 1: /* File name. */ 710 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 711 break; 712 713 case OPTION_IGNORE: 714 break; 715 case 'a': 716 /* For HP/UX compatibility. Actually -a shared should mean 717 ``use only shared libraries'' but, then, we don't 718 currently support shared libraries on HP/UX anyhow. */ 719 if (strcmp (optarg, "archive") == 0) 720 input_flags.dynamic = FALSE; 721 else if (strcmp (optarg, "shared") == 0 722 || strcmp (optarg, "default") == 0) 723 input_flags.dynamic = TRUE; 724 else 725 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 726 break; 727 case OPTION_ASSERT: 728 /* FIXME: We just ignore these, but we should handle them. */ 729 if (strcmp (optarg, "definitions") == 0) 730 ; 731 else if (strcmp (optarg, "nodefinitions") == 0) 732 ; 733 else if (strcmp (optarg, "nosymbolic") == 0) 734 ; 735 else if (strcmp (optarg, "pure-text") == 0) 736 ; 737 else 738 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 739 break; 740 case 'A': 741 ldfile_add_arch (optarg); 742 break; 743 case 'b': 744 lang_add_target (optarg); 745 break; 746 case 'c': 747 ldfile_open_command_file (optarg); 748 parser_input = input_mri_script; 749 yyparse (); 750 break; 751 case OPTION_CALL_SHARED: 752 input_flags.dynamic = TRUE; 753 break; 754 case OPTION_NON_SHARED: 755 input_flags.dynamic = FALSE; 756 break; 757 case OPTION_CREF: 758 command_line.cref = TRUE; 759 link_info.notice_all = TRUE; 760 break; 761 case 'd': 762 command_line.force_common_definition = TRUE; 763 break; 764 case OPTION_DEFSYM: 765 lex_string = optarg; 766 lex_redirect (optarg, "--defsym", ++defsym_count); 767 parser_input = input_defsym; 768 yyparse (); 769 lex_string = NULL; 770 break; 771 case OPTION_DEMANGLE: 772 demangling = TRUE; 773 if (optarg != NULL) 774 { 775 enum demangling_styles style; 776 777 style = cplus_demangle_name_to_style (optarg); 778 if (style == unknown_demangling) 779 einfo (_("%F%P: unknown demangling style `%s'\n"), 780 optarg); 781 782 cplus_demangle_set_style (style); 783 } 784 break; 785 case 'I': /* Used on Solaris. */ 786 case OPTION_DYNAMIC_LINKER: 787 command_line.interpreter = optarg; 788 link_info.nointerp = 0; 789 break; 790 case OPTION_NO_DYNAMIC_LINKER: 791 link_info.nointerp = 1; 792 break; 793 case OPTION_SYSROOT: 794 /* Already handled in ldmain.c. */ 795 break; 796 case OPTION_EB: 797 command_line.endian = ENDIAN_BIG; 798 break; 799 case OPTION_EL: 800 command_line.endian = ENDIAN_LITTLE; 801 break; 802 case OPTION_EMBEDDED_RELOCS: 803 command_line.embedded_relocs = TRUE; 804 break; 805 case OPTION_EXPORT_DYNAMIC: 806 case 'E': /* HP/UX compatibility. */ 807 link_info.export_dynamic = TRUE; 808 break; 809 case OPTION_NO_EXPORT_DYNAMIC: 810 link_info.export_dynamic = FALSE; 811 break; 812 case 'e': 813 lang_add_entry (optarg, TRUE); 814 break; 815 case 'f': 816 if (command_line.auxiliary_filters == NULL) 817 { 818 command_line.auxiliary_filters = (char **) 819 xmalloc (2 * sizeof (char *)); 820 command_line.auxiliary_filters[0] = optarg; 821 command_line.auxiliary_filters[1] = NULL; 822 } 823 else 824 { 825 int c; 826 char **p; 827 828 c = 0; 829 for (p = command_line.auxiliary_filters; *p != NULL; p++) 830 ++c; 831 command_line.auxiliary_filters = (char **) 832 xrealloc (command_line.auxiliary_filters, 833 (c + 2) * sizeof (char *)); 834 command_line.auxiliary_filters[c] = optarg; 835 command_line.auxiliary_filters[c + 1] = NULL; 836 } 837 break; 838 case 'F': 839 command_line.filter_shlib = optarg; 840 break; 841 case OPTION_FORCE_EXE_SUFFIX: 842 command_line.force_exe_suffix = TRUE; 843 break; 844 case 'G': 845 { 846 char *end; 847 g_switch_value = strtoul (optarg, &end, 0); 848 if (*end) 849 einfo (_("%P%F: invalid number `%s'\n"), optarg); 850 } 851 break; 852 case 'g': 853 /* Ignore. */ 854 break; 855 case OPTION_GC_SECTIONS: 856 link_info.gc_sections = TRUE; 857 break; 858 case OPTION_PRINT_GC_SECTIONS: 859 link_info.print_gc_sections = TRUE; 860 break; 861 case OPTION_HELP: 862 help (); 863 xexit (0); 864 break; 865 case 'L': 866 ldfile_add_library_path (optarg, TRUE); 867 break; 868 case 'l': 869 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 870 break; 871 case 'M': 872 config.map_filename = "-"; 873 break; 874 case 'm': 875 /* Ignore. Was handled in a pre-parse. */ 876 break; 877 case OPTION_MAP: 878 config.map_filename = optarg; 879 break; 880 case 'N': 881 config.text_read_only = FALSE; 882 config.magic_demand_paged = FALSE; 883 input_flags.dynamic = FALSE; 884 break; 885 case OPTION_NO_OMAGIC: 886 config.text_read_only = TRUE; 887 config.magic_demand_paged = TRUE; 888 /* NB/ Does not set input_flags.dynamic to TRUE. 889 Use --call-shared or -Bdynamic for this. */ 890 break; 891 case 'n': 892 config.magic_demand_paged = FALSE; 893 input_flags.dynamic = FALSE; 894 break; 895 case OPTION_NO_DEFINE_COMMON: 896 command_line.inhibit_common_definition = TRUE; 897 break; 898 case OPTION_NO_DEMANGLE: 899 demangling = FALSE; 900 break; 901 case OPTION_NO_GC_SECTIONS: 902 link_info.gc_sections = FALSE; 903 break; 904 case OPTION_NO_PRINT_GC_SECTIONS: 905 link_info.print_gc_sections = FALSE; 906 break; 907 case OPTION_NO_KEEP_MEMORY: 908 link_info.keep_memory = FALSE; 909 break; 910 case OPTION_NO_UNDEFINED: 911 link_info.unresolved_syms_in_objects 912 = how_to_report_unresolved_symbols; 913 break; 914 case OPTION_ALLOW_SHLIB_UNDEFINED: 915 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 916 break; 917 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 918 link_info.unresolved_syms_in_shared_libs 919 = how_to_report_unresolved_symbols; 920 break; 921 case OPTION_UNRESOLVED_SYMBOLS: 922 if (strcmp (optarg, "ignore-all") == 0) 923 { 924 link_info.unresolved_syms_in_objects = RM_IGNORE; 925 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 926 } 927 else if (strcmp (optarg, "report-all") == 0) 928 { 929 link_info.unresolved_syms_in_objects 930 = how_to_report_unresolved_symbols; 931 link_info.unresolved_syms_in_shared_libs 932 = how_to_report_unresolved_symbols; 933 } 934 else if (strcmp (optarg, "ignore-in-object-files") == 0) 935 { 936 link_info.unresolved_syms_in_objects = RM_IGNORE; 937 link_info.unresolved_syms_in_shared_libs 938 = how_to_report_unresolved_symbols; 939 } 940 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 941 { 942 link_info.unresolved_syms_in_objects 943 = how_to_report_unresolved_symbols; 944 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 945 } 946 else 947 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 948 break; 949 case OPTION_WARN_UNRESOLVED_SYMBOLS: 950 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 951 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 952 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 953 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 954 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 955 break; 956 957 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 958 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 959 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 960 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 961 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 962 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 963 break; 964 case OPTION_ALLOW_MULTIPLE_DEFINITION: 965 link_info.allow_multiple_definition = TRUE; 966 break; 967 case OPTION_NO_UNDEFINED_VERSION: 968 link_info.allow_undefined_version = FALSE; 969 break; 970 case OPTION_DEFAULT_SYMVER: 971 link_info.create_default_symver = TRUE; 972 break; 973 case OPTION_DEFAULT_IMPORTED_SYMVER: 974 link_info.default_imported_symver = TRUE; 975 break; 976 case OPTION_NO_WARN_MISMATCH: 977 command_line.warn_mismatch = FALSE; 978 break; 979 case OPTION_NO_WARN_SEARCH_MISMATCH: 980 command_line.warn_search_mismatch = FALSE; 981 break; 982 case OPTION_NOINHIBIT_EXEC: 983 force_make_executable = TRUE; 984 break; 985 case OPTION_NOSTDLIB: 986 config.only_cmd_line_lib_dirs = TRUE; 987 break; 988 case OPTION_NO_WHOLE_ARCHIVE: 989 input_flags.whole_archive = FALSE; 990 break; 991 case 'O': 992 /* FIXME "-O<non-digits> <value>" used to set the address of 993 section <non-digits>. Was this for compatibility with 994 something, or can we create a new option to do that 995 (with a syntax similar to -defsym)? 996 getopt can't handle two args to an option without kludges. */ 997 998 /* Enable optimizations of output files. */ 999 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1000 break; 1001 case 'o': 1002 lang_add_output (optarg, 0); 1003 break; 1004 case OPTION_OFORMAT: 1005 lang_add_output_format (optarg, NULL, NULL, 0); 1006 break; 1007 case OPTION_PRINT_SYSROOT: 1008 if (*ld_sysroot) 1009 puts (ld_sysroot); 1010 xexit (0); 1011 break; 1012 case OPTION_PRINT_OUTPUT_FORMAT: 1013 command_line.print_output_format = TRUE; 1014 break; 1015 #ifdef ENABLE_PLUGINS 1016 case OPTION_PLUGIN: 1017 plugin_opt_plugin (optarg); 1018 break; 1019 case OPTION_PLUGIN_OPT: 1020 if (plugin_opt_plugin_arg (optarg)) 1021 einfo (_("%P%F: bad -plugin-opt option\n")); 1022 break; 1023 #endif /* ENABLE_PLUGINS */ 1024 case 'q': 1025 link_info.emitrelocations = TRUE; 1026 break; 1027 case 'i': 1028 case 'r': 1029 if (optind == last_optind) 1030 /* This can happen if the user put "-rpath,a" on the command 1031 line. (Or something similar. The comma is important). 1032 Getopt becomes confused and thinks that this is a -r option 1033 but it cannot parse the text after the -r so it refuses to 1034 increment the optind counter. Detect this case and issue 1035 an error message here. We cannot just make this a warning, 1036 increment optind, and continue because getopt is too confused 1037 and will seg-fault the next time around. */ 1038 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]); 1039 1040 if (bfd_link_pic (&link_info)) 1041 einfo (_("%P%F: -r and %s may not be used together\n"), 1042 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1043 1044 link_info.type = type_relocatable; 1045 config.build_constructors = FALSE; 1046 config.magic_demand_paged = FALSE; 1047 config.text_read_only = FALSE; 1048 input_flags.dynamic = FALSE; 1049 break; 1050 case 'R': 1051 /* The GNU linker traditionally uses -R to mean to include 1052 only the symbols from a file. The Solaris linker uses -R 1053 to set the path used by the runtime linker to find 1054 libraries. This is the GNU linker -rpath argument. We 1055 try to support both simultaneously by checking the file 1056 named. If it is a directory, rather than a regular file, 1057 we assume -rpath was meant. */ 1058 { 1059 struct stat s; 1060 1061 if (stat (optarg, &s) >= 0 1062 && ! S_ISDIR (s.st_mode)) 1063 { 1064 lang_add_input_file (optarg, 1065 lang_input_file_is_symbols_only_enum, 1066 NULL); 1067 break; 1068 } 1069 } 1070 /* Fall through. */ 1071 case OPTION_RPATH: 1072 if (command_line.rpath == NULL) 1073 command_line.rpath = xstrdup (optarg); 1074 else 1075 { 1076 size_t rpath_len = strlen (command_line.rpath); 1077 size_t optarg_len = strlen (optarg); 1078 char *buf; 1079 char *cp = command_line.rpath; 1080 1081 /* First see whether OPTARG is already in the path. */ 1082 do 1083 { 1084 if (strncmp (optarg, cp, optarg_len) == 0 1085 && (cp[optarg_len] == 0 1086 || cp[optarg_len] == config.rpath_separator)) 1087 /* We found it. */ 1088 break; 1089 1090 /* Not yet found. */ 1091 cp = strchr (cp, config.rpath_separator); 1092 if (cp != NULL) 1093 ++cp; 1094 } 1095 while (cp != NULL); 1096 1097 if (cp == NULL) 1098 { 1099 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1100 sprintf (buf, "%s%c%s", command_line.rpath, 1101 config.rpath_separator, optarg); 1102 free (command_line.rpath); 1103 command_line.rpath = buf; 1104 } 1105 } 1106 break; 1107 case OPTION_RPATH_LINK: 1108 if (command_line.rpath_link == NULL) 1109 command_line.rpath_link = xstrdup (optarg); 1110 else 1111 { 1112 char *buf; 1113 1114 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1115 + strlen (optarg) 1116 + 2); 1117 sprintf (buf, "%s%c%s", command_line.rpath_link, 1118 config.rpath_separator, optarg); 1119 free (command_line.rpath_link); 1120 command_line.rpath_link = buf; 1121 } 1122 break; 1123 case OPTION_NO_RELAX: 1124 DISABLE_RELAXATION; 1125 break; 1126 case OPTION_RELAX: 1127 ENABLE_RELAXATION; 1128 break; 1129 case OPTION_RETAIN_SYMBOLS_FILE: 1130 add_keepsyms_file (optarg); 1131 break; 1132 case 'S': 1133 link_info.strip = strip_debugger; 1134 break; 1135 case 's': 1136 link_info.strip = strip_all; 1137 break; 1138 case OPTION_STRIP_DISCARDED: 1139 link_info.strip_discarded = TRUE; 1140 break; 1141 case OPTION_NO_STRIP_DISCARDED: 1142 link_info.strip_discarded = FALSE; 1143 break; 1144 case OPTION_SHARED: 1145 if (config.has_shared) 1146 { 1147 if (bfd_link_relocatable (&link_info)) 1148 einfo (_("%P%F: -r and -shared may not be used together\n")); 1149 1150 link_info.type = type_dll; 1151 /* When creating a shared library, the default 1152 behaviour is to ignore any unresolved references. */ 1153 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1154 link_info.unresolved_syms_in_objects = RM_IGNORE; 1155 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1156 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1157 } 1158 else 1159 einfo (_("%P%F: -shared not supported\n")); 1160 break; 1161 case OPTION_PIE: 1162 if (config.has_shared) 1163 { 1164 if (bfd_link_relocatable (&link_info)) 1165 einfo (_("%P%F: -r and -pie may not be used together\n")); 1166 1167 link_info.type = type_pie; 1168 } 1169 else 1170 einfo (_("%P%F: -pie not supported\n")); 1171 break; 1172 case 'h': /* Used on Solaris. */ 1173 case OPTION_SONAME: 1174 if (optarg[0] == '\0' && command_line.soname 1175 && command_line.soname[0]) 1176 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1177 else 1178 command_line.soname = optarg; 1179 break; 1180 case OPTION_SORT_COMMON: 1181 if (optarg == NULL 1182 || strcmp (optarg, N_("descending")) == 0) 1183 config.sort_common = sort_descending; 1184 else if (strcmp (optarg, N_("ascending")) == 0) 1185 config.sort_common = sort_ascending; 1186 else 1187 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1188 optarg); 1189 break; 1190 case OPTION_SORT_SECTION: 1191 if (strcmp (optarg, N_("name")) == 0) 1192 sort_section = by_name; 1193 else if (strcmp (optarg, N_("alignment")) == 0) 1194 sort_section = by_alignment; 1195 else 1196 einfo (_("%P%F: invalid section sorting option: %s\n"), 1197 optarg); 1198 break; 1199 case OPTION_STATS: 1200 config.stats = TRUE; 1201 break; 1202 case OPTION_SYMBOLIC: 1203 command_line.symbolic = symbolic; 1204 break; 1205 case OPTION_SYMBOLIC_FUNCTIONS: 1206 command_line.symbolic = symbolic_functions; 1207 break; 1208 case 't': 1209 trace_files = TRUE; 1210 break; 1211 case 'T': 1212 previous_script_handle = saved_script_handle; 1213 ldfile_open_command_file (optarg); 1214 parser_input = input_script; 1215 yyparse (); 1216 previous_script_handle = NULL; 1217 break; 1218 case OPTION_DEFAULT_SCRIPT: 1219 command_line.default_script = optarg; 1220 break; 1221 case OPTION_SECTION_START: 1222 { 1223 char *optarg2; 1224 char *sec_name; 1225 int len; 1226 1227 /* Check for <something>=<somthing>... */ 1228 optarg2 = strchr (optarg, '='); 1229 if (optarg2 == NULL) 1230 einfo (_("%P%F: invalid argument to option" 1231 " \"--section-start\"\n")); 1232 1233 optarg2++; 1234 1235 /* So far so good. Are all the args present? */ 1236 if ((*optarg == '\0') || (*optarg2 == '\0')) 1237 einfo (_("%P%F: missing argument(s) to option" 1238 " \"--section-start\"\n")); 1239 1240 /* We must copy the section name as set_section_start 1241 doesn't do it for us. */ 1242 len = optarg2 - optarg; 1243 sec_name = (char *) xmalloc (len); 1244 memcpy (sec_name, optarg, len - 1); 1245 sec_name[len - 1] = 0; 1246 1247 /* Then set it... */ 1248 set_section_start (sec_name, optarg2); 1249 } 1250 break; 1251 case OPTION_TARGET_HELP: 1252 /* Mention any target specific options. */ 1253 ldemul_list_emulation_options (stdout); 1254 exit (0); 1255 case OPTION_TBSS: 1256 set_segment_start (".bss", optarg); 1257 break; 1258 case OPTION_TDATA: 1259 set_segment_start (".data", optarg); 1260 break; 1261 case OPTION_TTEXT: 1262 set_segment_start (".text", optarg); 1263 break; 1264 case OPTION_TTEXT_SEGMENT: 1265 set_segment_start (".text-segment", optarg); 1266 break; 1267 case OPTION_TRODATA_SEGMENT: 1268 set_segment_start (".rodata-segment", optarg); 1269 break; 1270 case OPTION_TLDATA_SEGMENT: 1271 set_segment_start (".ldata-segment", optarg); 1272 break; 1273 case OPTION_TRADITIONAL_FORMAT: 1274 link_info.traditional_format = TRUE; 1275 break; 1276 case OPTION_TASK_LINK: 1277 link_info.task_link = TRUE; 1278 /* Fall through - do an implied -r option. */ 1279 case OPTION_UR: 1280 if (bfd_link_pic (&link_info)) 1281 einfo (_("%P%F: -r and %s may not be used together\n"), 1282 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1283 1284 link_info.type = type_relocatable; 1285 config.build_constructors = TRUE; 1286 config.magic_demand_paged = FALSE; 1287 config.text_read_only = FALSE; 1288 input_flags.dynamic = FALSE; 1289 break; 1290 case 'u': 1291 ldlang_add_undef (optarg, TRUE); 1292 break; 1293 case OPTION_REQUIRE_DEFINED_SYMBOL: 1294 ldlang_add_require_defined (optarg); 1295 break; 1296 case OPTION_UNIQUE: 1297 if (optarg != NULL) 1298 lang_add_unique (optarg); 1299 else 1300 config.unique_orphan_sections = TRUE; 1301 break; 1302 case OPTION_VERBOSE: 1303 ldversion (1); 1304 version_printed = TRUE; 1305 verbose = TRUE; 1306 overflow_cutoff_limit = -2; 1307 if (optarg != NULL) 1308 { 1309 char *end; 1310 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1311 if (*end) 1312 einfo (_("%P%F: invalid number `%s'\n"), optarg); 1313 #ifdef ENABLE_PLUGINS 1314 report_plugin_symbols = level > 1; 1315 #endif /* ENABLE_PLUGINS */ 1316 } 1317 break; 1318 case 'v': 1319 ldversion (0); 1320 version_printed = TRUE; 1321 break; 1322 case 'V': 1323 ldversion (1); 1324 version_printed = TRUE; 1325 break; 1326 case OPTION_VERSION: 1327 ldversion (2); 1328 xexit (0); 1329 break; 1330 case OPTION_VERSION_SCRIPT: 1331 /* This option indicates a small script that only specifies 1332 version information. Read it, but don't assume that 1333 we've seen a linker script. */ 1334 { 1335 FILE *hold_script_handle; 1336 1337 hold_script_handle = saved_script_handle; 1338 ldfile_open_command_file (optarg); 1339 saved_script_handle = hold_script_handle; 1340 parser_input = input_version_script; 1341 yyparse (); 1342 } 1343 break; 1344 case OPTION_VERSION_EXPORTS_SECTION: 1345 /* This option records a version symbol to be applied to the 1346 symbols listed for export to be found in the object files 1347 .exports sections. */ 1348 command_line.version_exports_section = optarg; 1349 break; 1350 case OPTION_DYNAMIC_LIST_DATA: 1351 command_line.dynamic_list = dynamic_list_data; 1352 if (command_line.symbolic == symbolic) 1353 command_line.symbolic = symbolic_unset; 1354 break; 1355 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1356 lang_append_dynamic_list_cpp_typeinfo (); 1357 if (command_line.dynamic_list != dynamic_list_data) 1358 command_line.dynamic_list = dynamic_list; 1359 if (command_line.symbolic == symbolic) 1360 command_line.symbolic = symbolic_unset; 1361 break; 1362 case OPTION_DYNAMIC_LIST_CPP_NEW: 1363 lang_append_dynamic_list_cpp_new (); 1364 if (command_line.dynamic_list != dynamic_list_data) 1365 command_line.dynamic_list = dynamic_list; 1366 if (command_line.symbolic == symbolic) 1367 command_line.symbolic = symbolic_unset; 1368 break; 1369 case OPTION_DYNAMIC_LIST: 1370 /* This option indicates a small script that only specifies 1371 a dynamic list. Read it, but don't assume that we've 1372 seen a linker script. */ 1373 { 1374 FILE *hold_script_handle; 1375 1376 hold_script_handle = saved_script_handle; 1377 ldfile_open_command_file (optarg); 1378 saved_script_handle = hold_script_handle; 1379 parser_input = input_dynamic_list; 1380 yyparse (); 1381 } 1382 if (command_line.dynamic_list != dynamic_list_data) 1383 command_line.dynamic_list = dynamic_list; 1384 if (command_line.symbolic == symbolic) 1385 command_line.symbolic = symbolic_unset; 1386 break; 1387 case OPTION_WARN_COMMON: 1388 config.warn_common = TRUE; 1389 break; 1390 case OPTION_WARN_CONSTRUCTORS: 1391 config.warn_constructors = TRUE; 1392 break; 1393 case OPTION_WARN_FATAL: 1394 config.fatal_warnings = TRUE; 1395 break; 1396 case OPTION_NO_WARN_FATAL: 1397 config.fatal_warnings = FALSE; 1398 break; 1399 case OPTION_WARN_MULTIPLE_GP: 1400 config.warn_multiple_gp = TRUE; 1401 break; 1402 case OPTION_WARN_ONCE: 1403 config.warn_once = TRUE; 1404 break; 1405 case OPTION_WARN_SECTION_ALIGN: 1406 config.warn_section_align = TRUE; 1407 break; 1408 case OPTION_WARN_SHARED_TEXTREL: 1409 link_info.warn_shared_textrel = TRUE; 1410 break; 1411 case OPTION_WARN_ALTERNATE_EM: 1412 link_info.warn_alternate_em = TRUE; 1413 break; 1414 case OPTION_WHOLE_ARCHIVE: 1415 input_flags.whole_archive = TRUE; 1416 break; 1417 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1418 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1419 break; 1420 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1421 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1422 break; 1423 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1424 input_flags.add_DT_NEEDED_for_regular = TRUE; 1425 break; 1426 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1427 input_flags.add_DT_NEEDED_for_regular = FALSE; 1428 break; 1429 case OPTION_WRAP: 1430 add_wrap (optarg); 1431 break; 1432 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1433 add_ignoresym (&link_info, optarg); 1434 break; 1435 case OPTION_DISCARD_NONE: 1436 link_info.discard = discard_none; 1437 break; 1438 case 'X': 1439 link_info.discard = discard_l; 1440 break; 1441 case 'x': 1442 link_info.discard = discard_all; 1443 break; 1444 case 'Y': 1445 if (CONST_STRNEQ (optarg, "P,")) 1446 optarg += 2; 1447 if (default_dirlist != NULL) 1448 free (default_dirlist); 1449 default_dirlist = xstrdup (optarg); 1450 break; 1451 case 'y': 1452 add_ysym (optarg); 1453 break; 1454 case OPTION_SPARE_DYNAMIC_TAGS: 1455 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1456 break; 1457 case OPTION_SPLIT_BY_RELOC: 1458 if (optarg != NULL) 1459 config.split_by_reloc = strtoul (optarg, NULL, 0); 1460 else 1461 config.split_by_reloc = 32768; 1462 break; 1463 case OPTION_SPLIT_BY_FILE: 1464 if (optarg != NULL) 1465 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1466 else 1467 config.split_by_file = 1; 1468 break; 1469 case OPTION_CHECK_SECTIONS: 1470 command_line.check_section_addresses = 1; 1471 break; 1472 case OPTION_NO_CHECK_SECTIONS: 1473 command_line.check_section_addresses = 0; 1474 break; 1475 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1476 command_line.accept_unknown_input_arch = TRUE; 1477 break; 1478 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1479 command_line.accept_unknown_input_arch = FALSE; 1480 break; 1481 case '(': 1482 lang_enter_group (); 1483 ingroup++; 1484 break; 1485 case ')': 1486 if (! ingroup) 1487 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1488 1489 lang_leave_group (); 1490 ingroup--; 1491 break; 1492 1493 case OPTION_INIT: 1494 link_info.init_function = optarg; 1495 break; 1496 1497 case OPTION_FINI: 1498 link_info.fini_function = optarg; 1499 break; 1500 1501 case OPTION_REDUCE_MEMORY_OVERHEADS: 1502 link_info.reduce_memory_overheads = TRUE; 1503 if (config.hash_table_size == 0) 1504 config.hash_table_size = 1021; 1505 break; 1506 1507 case OPTION_HASH_SIZE: 1508 { 1509 bfd_size_type new_size; 1510 1511 new_size = strtoul (optarg, NULL, 0); 1512 if (new_size) 1513 config.hash_table_size = new_size; 1514 else 1515 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1516 } 1517 break; 1518 1519 case OPTION_PUSH_STATE: 1520 input_flags.pushed = xmemdup (&input_flags, 1521 sizeof (input_flags), 1522 sizeof (input_flags)); 1523 break; 1524 1525 case OPTION_POP_STATE: 1526 if (input_flags.pushed == NULL) 1527 einfo (_("%P%F: no state pushed before popping\n")); 1528 else 1529 { 1530 struct lang_input_statement_flags *oldp = input_flags.pushed; 1531 memcpy (&input_flags, oldp, sizeof (input_flags)); 1532 free (oldp); 1533 } 1534 break; 1535 1536 case OPTION_PRINT_MEMORY_USAGE: 1537 command_line.print_memory_usage = TRUE; 1538 break; 1539 1540 case OPTION_ORPHAN_HANDLING: 1541 if (strcasecmp (optarg, "place") == 0) 1542 config.orphan_handling = orphan_handling_place; 1543 else if (strcasecmp (optarg, "warn") == 0) 1544 config.orphan_handling = orphan_handling_warn; 1545 else if (strcasecmp (optarg, "error") == 0) 1546 config.orphan_handling = orphan_handling_error; 1547 else if (strcasecmp (optarg, "discard") == 0) 1548 config.orphan_handling = orphan_handling_discard; 1549 else 1550 einfo (_("%P%F: invalid argument to option" 1551 " \"--orphan-handling\"\n")); 1552 break; 1553 } 1554 } 1555 1556 if (command_line.soname && command_line.soname[0] == '\0') 1557 { 1558 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1559 command_line.soname = NULL; 1560 } 1561 1562 while (ingroup) 1563 { 1564 lang_leave_group (); 1565 ingroup--; 1566 } 1567 1568 if (default_dirlist != NULL) 1569 { 1570 set_default_dirlist (default_dirlist); 1571 free (default_dirlist); 1572 } 1573 1574 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1575 /* FIXME: Should we allow emulations a chance to set this ? */ 1576 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1577 1578 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1579 /* FIXME: Should we allow emulations a chance to set this ? */ 1580 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1581 1582 if (bfd_link_relocatable (&link_info) 1583 && command_line.check_section_addresses < 0) 1584 command_line.check_section_addresses = 0; 1585 1586 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1587 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1588 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1589 for PIC outputs. -Bsymbolic overrides all others and vice versa. */ 1590 switch (command_line.symbolic) 1591 { 1592 case symbolic_unset: 1593 break; 1594 case symbolic: 1595 /* -Bsymbolic is for PIC output only. */ 1596 if (bfd_link_pic (&link_info)) 1597 { 1598 link_info.symbolic = TRUE; 1599 /* Should we free the unused memory? */ 1600 link_info.dynamic_list = NULL; 1601 command_line.dynamic_list = dynamic_list_unset; 1602 } 1603 break; 1604 case symbolic_functions: 1605 /* -Bsymbolic-functions is for PIC output only. */ 1606 if (bfd_link_pic (&link_info)) 1607 command_line.dynamic_list = dynamic_list_data; 1608 break; 1609 } 1610 1611 switch (command_line.dynamic_list) 1612 { 1613 case dynamic_list_unset: 1614 break; 1615 case dynamic_list_data: 1616 link_info.dynamic_data = TRUE; 1617 case dynamic_list: 1618 link_info.dynamic = TRUE; 1619 break; 1620 } 1621 1622 if (!bfd_link_dll (&link_info)) 1623 { 1624 if (command_line.filter_shlib) 1625 einfo (_("%P%F: -F may not be used without -shared\n")); 1626 if (command_line.auxiliary_filters) 1627 einfo (_("%P%F: -f may not be used without -shared\n")); 1628 } 1629 1630 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1631 don't see how else this can be handled, since in this case we 1632 must preserve all externally visible symbols. */ 1633 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1634 { 1635 link_info.strip = strip_debugger; 1636 if (link_info.discard == discard_sec_merge) 1637 link_info.discard = discard_all; 1638 } 1639 } 1640 1641 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1642 library search path. */ 1643 1644 static void 1645 set_default_dirlist (char *dirlist_ptr) 1646 { 1647 char *p; 1648 1649 while (1) 1650 { 1651 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1652 if (p != NULL) 1653 *p = '\0'; 1654 if (*dirlist_ptr != '\0') 1655 ldfile_add_library_path (dirlist_ptr, TRUE); 1656 if (p == NULL) 1657 break; 1658 dirlist_ptr = p + 1; 1659 } 1660 } 1661 1662 static void 1663 set_section_start (char *sect, char *valstr) 1664 { 1665 const char *end; 1666 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1667 if (*end) 1668 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1669 lang_section_start (sect, exp_intop (val), NULL); 1670 } 1671 1672 static void 1673 set_segment_start (const char *section, char *valstr) 1674 { 1675 const char *name; 1676 const char *end; 1677 segment_type *seg; 1678 1679 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1680 if (*end) 1681 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1682 /* If we already have an entry for this segment, update the existing 1683 value. */ 1684 name = section + 1; 1685 for (seg = segments; seg; seg = seg->next) 1686 if (strcmp (seg->name, name) == 0) 1687 { 1688 seg->value = val; 1689 lang_section_start (section, exp_intop (val), seg); 1690 return; 1691 } 1692 /* There was no existing value so we must create a new segment 1693 entry. */ 1694 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1695 seg->name = name; 1696 seg->value = val; 1697 seg->used = FALSE; 1698 /* Add it to the linked list of segments. */ 1699 seg->next = segments; 1700 segments = seg; 1701 /* Historically, -Ttext and friends set the base address of a 1702 particular section. For backwards compatibility, we still do 1703 that. If a SEGMENT_START directive is seen, the section address 1704 assignment will be disabled. */ 1705 lang_section_start (section, exp_intop (val), seg); 1706 } 1707 1708 static void 1709 elf_shlib_list_options (FILE *file) 1710 { 1711 fprintf (file, _("\ 1712 --audit=AUDITLIB Specify a library to use for auditing\n")); 1713 fprintf (file, _("\ 1714 -Bgroup Selects group name lookup rules for DSO\n")); 1715 fprintf (file, _("\ 1716 --disable-new-dtags Disable new dynamic tags\n")); 1717 fprintf (file, _("\ 1718 --enable-new-dtags Enable new dynamic tags\n")); 1719 fprintf (file, _("\ 1720 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1721 fprintf (file, _("\ 1722 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1723 fprintf (file, _("\ 1724 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1725 fprintf (file, _("\ 1726 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1727 Specify a library to use for auditing dependencies\n")); 1728 fprintf (file, _("\ 1729 -z combreloc Merge dynamic relocs into one section and sort\n")); 1730 fprintf (file, _("\ 1731 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1732 fprintf (file, _("\ 1733 -z global Make symbols in DSO available for subsequently\n\ 1734 loaded objects\n")); 1735 fprintf (file, _("\ 1736 -z initfirst Mark DSO to be initialized first at runtime\n")); 1737 fprintf (file, _("\ 1738 -z interpose Mark object to interpose all DSOs but executable\n")); 1739 fprintf (file, _("\ 1740 -z lazy Mark object lazy runtime binding (default)\n")); 1741 fprintf (file, _("\ 1742 -z loadfltr Mark object requiring immediate process\n")); 1743 fprintf (file, _("\ 1744 -z nocopyreloc Don't create copy relocs\n")); 1745 fprintf (file, _("\ 1746 -z nodefaultlib Mark object not to use default search paths\n")); 1747 fprintf (file, _("\ 1748 -z nodelete Mark DSO non-deletable at runtime\n")); 1749 fprintf (file, _("\ 1750 -z nodlopen Mark DSO not available to dlopen\n")); 1751 fprintf (file, _("\ 1752 -z nodump Mark DSO not available to dldump\n")); 1753 fprintf (file, _("\ 1754 -z now Mark object non-lazy runtime binding\n")); 1755 fprintf (file, _("\ 1756 -z origin Mark object requiring immediate $ORIGIN\n\ 1757 processing at runtime\n")); 1758 #if DEFAULT_LD_Z_RELRO 1759 fprintf (file, _("\ 1760 -z relro Create RELRO program header (default)\n")); 1761 fprintf (file, _("\ 1762 -z norelro Don't create RELRO program header\n")); 1763 #else 1764 fprintf (file, _("\ 1765 -z relro Create RELRO program header\n")); 1766 fprintf (file, _("\ 1767 -z norelro Don't create RELRO program header (default)\n")); 1768 #endif 1769 fprintf (file, _("\ 1770 -z common Generate common symbols with STT_COMMON type\n")); 1771 fprintf (file, _("\ 1772 -z nocommon Generate common symbols with STT_OBJECT type\n")); 1773 fprintf (file, _("\ 1774 -z stacksize=SIZE Set size of stack segment\n")); 1775 fprintf (file, _("\ 1776 -z text Treat DT_TEXTREL in shared object as error\n")); 1777 fprintf (file, _("\ 1778 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1779 fprintf (file, _("\ 1780 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1781 } 1782 1783 static void 1784 elf_static_list_options (FILE *file) 1785 { 1786 fprintf (file, _("\ 1787 --build-id[=STYLE] Generate build ID note\n")); 1788 fprintf (file, _("\ 1789 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1790 Compress DWARF debug sections using zlib\n")); 1791 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1792 fprintf (file, _("\ 1793 Default: zlib-gabi\n")); 1794 #else 1795 fprintf (file, _("\ 1796 Default: none\n")); 1797 #endif 1798 fprintf (file, _("\ 1799 -z common-page-size=SIZE Set common page size to SIZE\n")); 1800 fprintf (file, _("\ 1801 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1802 fprintf (file, _("\ 1803 -z defs Report unresolved symbols in object files.\n")); 1804 fprintf (file, _("\ 1805 -z muldefs Allow multiple definitions\n")); 1806 fprintf (file, _("\ 1807 -z execstack Mark executable as requiring executable stack\n")); 1808 fprintf (file, _("\ 1809 -z noexecstack Mark executable as not requiring executable stack\n")); 1810 } 1811 1812 static void 1813 elf_plt_unwind_list_options (FILE *file) 1814 { 1815 fprintf (file, _("\ 1816 --ld-generated-unwind-info Generate exception handling info for PLT\n\ 1817 --no-ld-generated-unwind-info\n\ 1818 Don't generate exception handling info for PLT\n")); 1819 } 1820 1821 static void 1822 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1823 bfd_boolean plt_unwind) 1824 { 1825 if (!elf) 1826 return; 1827 printf (_("ELF emulations:\n")); 1828 if (plt_unwind) 1829 elf_plt_unwind_list_options (file); 1830 elf_static_list_options (file); 1831 if (shlib) 1832 elf_shlib_list_options (file); 1833 } 1834 1835 1836 /* Print help messages for the options. */ 1837 1838 static void 1839 help (void) 1840 { 1841 unsigned i; 1842 const char **targets, **pp; 1843 int len; 1844 1845 printf (_("Usage: %s [options] file...\n"), program_name); 1846 1847 printf (_("Options:\n")); 1848 for (i = 0; i < OPTION_COUNT; i++) 1849 { 1850 if (ld_options[i].doc != NULL) 1851 { 1852 bfd_boolean comma; 1853 unsigned j; 1854 1855 printf (" "); 1856 1857 comma = FALSE; 1858 len = 2; 1859 1860 j = i; 1861 do 1862 { 1863 if (ld_options[j].shortopt != '\0' 1864 && ld_options[j].control != NO_HELP) 1865 { 1866 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1867 len += (comma ? 2 : 0) + 2; 1868 if (ld_options[j].arg != NULL) 1869 { 1870 if (ld_options[j].opt.has_arg != optional_argument) 1871 { 1872 printf (" "); 1873 ++len; 1874 } 1875 printf ("%s", _(ld_options[j].arg)); 1876 len += strlen (_(ld_options[j].arg)); 1877 } 1878 comma = TRUE; 1879 } 1880 ++j; 1881 } 1882 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1883 1884 j = i; 1885 do 1886 { 1887 if (ld_options[j].opt.name != NULL 1888 && ld_options[j].control != NO_HELP) 1889 { 1890 int two_dashes = 1891 (ld_options[j].control == TWO_DASHES 1892 || ld_options[j].control == EXACTLY_TWO_DASHES); 1893 1894 printf ("%s-%s%s", 1895 comma ? ", " : "", 1896 two_dashes ? "-" : "", 1897 ld_options[j].opt.name); 1898 len += ((comma ? 2 : 0) 1899 + 1 1900 + (two_dashes ? 1 : 0) 1901 + strlen (ld_options[j].opt.name)); 1902 if (ld_options[j].arg != NULL) 1903 { 1904 printf (" %s", _(ld_options[j].arg)); 1905 len += 1 + strlen (_(ld_options[j].arg)); 1906 } 1907 comma = TRUE; 1908 } 1909 ++j; 1910 } 1911 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1912 1913 if (len >= 30) 1914 { 1915 printf ("\n"); 1916 len = 0; 1917 } 1918 1919 for (; len < 30; len++) 1920 putchar (' '); 1921 1922 printf ("%s\n", _(ld_options[i].doc)); 1923 } 1924 } 1925 printf (_(" @FILE")); 1926 for (len = strlen (" @FILE"); len < 30; len++) 1927 putchar (' '); 1928 printf (_("Read options from FILE\n")); 1929 1930 /* Note: Various tools (such as libtool) depend upon the 1931 format of the listings below - do not change them. */ 1932 /* xgettext:c-format */ 1933 printf (_("%s: supported targets:"), program_name); 1934 targets = bfd_target_list (); 1935 for (pp = targets; *pp != NULL; pp++) 1936 printf (" %s", *pp); 1937 free (targets); 1938 printf ("\n"); 1939 1940 /* xgettext:c-format */ 1941 printf (_("%s: supported emulations: "), program_name); 1942 ldemul_list_emulations (stdout); 1943 printf ("\n"); 1944 1945 /* xgettext:c-format */ 1946 printf (_("%s: emulation specific options:\n"), program_name); 1947 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 1948 ELF_PLT_UNWIND_LIST_OPTIONS); 1949 ldemul_list_emulation_options (stdout); 1950 printf ("\n"); 1951 1952 if (REPORT_BUGS_TO[0]) 1953 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1954 } 1955