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 { {"warn-poison-system-directories", no_argument, NULL, 534 OPTION_WARN_POISON_SYSTEM_DIRECTORIES}, 535 '\0', NULL, N_("Warn for -L options using system directories"), 536 TWO_DASHES }, 537 { {"no-warn-poison-system-directories", no_argument, NULL, 538 OPTION_NO_WARN_POISON_SYSTEM_DIRECTORIES}, 539 '\0', NULL, N_("Do not warn for -L options using system directories"), 540 TWO_DASHES }, 541 { {"error-poison-system-directories", no_argument, NULL, 542 OPTION_ERROR_POISON_SYSTEM_DIRECTORIES}, 543 '\0', NULL, N_("Give an error for -L options using system directories"), 544 TWO_DASHES }, 545 }; 546 547 #define OPTION_COUNT ARRAY_SIZE (ld_options) 548 549 void 550 parse_args (unsigned argc, char **argv) 551 { 552 unsigned i; 553 int is, il, irl; 554 int ingroup = 0; 555 char *default_dirlist = NULL; 556 char *shortopts; 557 struct option *longopts; 558 struct option *really_longopts; 559 int last_optind; 560 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 561 562 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 563 longopts = (struct option *) 564 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 565 really_longopts = (struct option *) 566 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 567 568 /* Starting the short option string with '-' is for programs that 569 expect options and other ARGV-elements in any order and that care about 570 the ordering of the two. We describe each non-option ARGV-element 571 as if it were the argument of an option with character code 1. */ 572 shortopts[0] = '-'; 573 is = 1; 574 il = 0; 575 irl = 0; 576 for (i = 0; i < OPTION_COUNT; i++) 577 { 578 if (ld_options[i].shortopt != '\0') 579 { 580 shortopts[is] = ld_options[i].shortopt; 581 ++is; 582 if (ld_options[i].opt.has_arg == required_argument 583 || ld_options[i].opt.has_arg == optional_argument) 584 { 585 shortopts[is] = ':'; 586 ++is; 587 if (ld_options[i].opt.has_arg == optional_argument) 588 { 589 shortopts[is] = ':'; 590 ++is; 591 } 592 } 593 } 594 if (ld_options[i].opt.name != NULL) 595 { 596 if (ld_options[i].control == EXACTLY_TWO_DASHES) 597 { 598 really_longopts[irl] = ld_options[i].opt; 599 ++irl; 600 } 601 else 602 { 603 longopts[il] = ld_options[i].opt; 604 ++il; 605 } 606 } 607 } 608 shortopts[is] = '\0'; 609 longopts[il].name = NULL; 610 really_longopts[irl].name = NULL; 611 612 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 613 614 /* The -G option is ambiguous on different platforms. Sometimes it 615 specifies the largest data size to put into the small data 616 section. Sometimes it is equivalent to --shared. Unfortunately, 617 the first form takes an argument, while the second does not. 618 619 We need to permit the --shared form because on some platforms, 620 such as Solaris, gcc -shared will pass -G to the linker. 621 622 To permit either usage, we look through the argument list. If we 623 find -G not followed by a number, we change it into --shared. 624 This will work for most normal cases. */ 625 for (i = 1; i < argc; i++) 626 if (strcmp (argv[i], "-G") == 0 627 && (i + 1 >= argc 628 || ! ISDIGIT (argv[i + 1][0]))) 629 argv[i] = (char *) "--shared"; 630 631 /* Because we permit long options to start with a single dash, and 632 we have a --library option, and the -l option is conventionally 633 used with an immediately following argument, we can have bad 634 results if somebody tries to use -l with a library whose name 635 happens to start with "ibrary", as in -li. We avoid problems by 636 simply turning -l into --library. This means that users will 637 have to use two dashes in order to use --library, which is OK 638 since that's how it is documented. 639 640 FIXME: It's possible that this problem can arise for other short 641 options as well, although the user does always have the recourse 642 of adding a space between the option and the argument. */ 643 for (i = 1; i < argc; i++) 644 { 645 if (argv[i][0] == '-' 646 && argv[i][1] == 'l' 647 && argv[i][2] != '\0') 648 { 649 char *n; 650 651 n = (char *) xmalloc (strlen (argv[i]) + 20); 652 sprintf (n, "--library=%s", argv[i] + 2); 653 argv[i] = n; 654 } 655 } 656 657 last_optind = -1; 658 while (1) 659 { 660 int longind; 661 int optc; 662 static unsigned int defsym_count; 663 664 /* Using last_optind lets us avoid calling ldemul_parse_args 665 multiple times on a single option, which would lead to 666 confusion in the internal static variables maintained by 667 getopt. This could otherwise happen for an argument like 668 -nx, in which the -n is parsed as a single option, and we 669 loop around to pick up the -x. */ 670 if (optind != last_optind) 671 if (ldemul_parse_args (argc, argv)) 672 continue; 673 674 /* getopt_long_only is like getopt_long, but '-' as well as '--' 675 can indicate a long option. */ 676 opterr = 0; 677 last_optind = optind; 678 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 679 if (optc == '?') 680 { 681 optind = last_optind; 682 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 683 } 684 685 if (ldemul_handle_option (optc)) 686 continue; 687 688 if (optc == -1) 689 break; 690 691 switch (optc) 692 { 693 case '?': 694 { 695 /* If the last word on the command line is an option that 696 requires an argument, getopt will refuse to recognise it. 697 Try to catch such options here and issue a more helpful 698 error message than just "unrecognized option". */ 699 int opt; 700 701 for (opt = ARRAY_SIZE (ld_options); opt--;) 702 if (ld_options[opt].opt.has_arg == required_argument 703 /* FIXME: There are a few short options that do not 704 have long equivalents, but which require arguments. 705 We should handle them too. */ 706 && ld_options[opt].opt.name != NULL 707 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0) 708 { 709 einfo (_("%P: %s: missing argument\n"), argv[last_optind]); 710 break; 711 } 712 713 if (opt == -1) 714 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 715 } 716 /* Fall through. */ 717 718 default: 719 einfo (_("%P%F: use the --help option for usage information\n")); 720 721 case 1: /* File name. */ 722 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 723 break; 724 725 case OPTION_IGNORE: 726 break; 727 case 'a': 728 /* For HP/UX compatibility. Actually -a shared should mean 729 ``use only shared libraries'' but, then, we don't 730 currently support shared libraries on HP/UX anyhow. */ 731 if (strcmp (optarg, "archive") == 0) 732 input_flags.dynamic = FALSE; 733 else if (strcmp (optarg, "shared") == 0 734 || strcmp (optarg, "default") == 0) 735 input_flags.dynamic = TRUE; 736 else 737 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 738 break; 739 case OPTION_ASSERT: 740 /* FIXME: We just ignore these, but we should handle them. */ 741 if (strcmp (optarg, "definitions") == 0) 742 ; 743 else if (strcmp (optarg, "nodefinitions") == 0) 744 ; 745 else if (strcmp (optarg, "nosymbolic") == 0) 746 ; 747 else if (strcmp (optarg, "pure-text") == 0) 748 ; 749 else 750 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 751 break; 752 case 'A': 753 ldfile_add_arch (optarg); 754 break; 755 case 'b': 756 lang_add_target (optarg); 757 break; 758 case 'c': 759 ldfile_open_command_file (optarg); 760 parser_input = input_mri_script; 761 yyparse (); 762 break; 763 case OPTION_CALL_SHARED: 764 input_flags.dynamic = TRUE; 765 break; 766 case OPTION_NON_SHARED: 767 input_flags.dynamic = FALSE; 768 break; 769 case OPTION_CREF: 770 command_line.cref = TRUE; 771 link_info.notice_all = TRUE; 772 break; 773 case 'd': 774 command_line.force_common_definition = TRUE; 775 break; 776 case OPTION_DEFSYM: 777 lex_string = optarg; 778 lex_redirect (optarg, "--defsym", ++defsym_count); 779 parser_input = input_defsym; 780 yyparse (); 781 lex_string = NULL; 782 break; 783 case OPTION_DEMANGLE: 784 demangling = TRUE; 785 if (optarg != NULL) 786 { 787 enum demangling_styles style; 788 789 style = cplus_demangle_name_to_style (optarg); 790 if (style == unknown_demangling) 791 einfo (_("%F%P: unknown demangling style `%s'\n"), 792 optarg); 793 794 cplus_demangle_set_style (style); 795 } 796 break; 797 case 'I': /* Used on Solaris. */ 798 case OPTION_DYNAMIC_LINKER: 799 command_line.interpreter = optarg; 800 link_info.nointerp = 0; 801 break; 802 case OPTION_NO_DYNAMIC_LINKER: 803 link_info.nointerp = 1; 804 break; 805 case OPTION_SYSROOT: 806 /* Already handled in ldmain.c. */ 807 break; 808 case OPTION_EB: 809 command_line.endian = ENDIAN_BIG; 810 break; 811 case OPTION_EL: 812 command_line.endian = ENDIAN_LITTLE; 813 break; 814 case OPTION_EMBEDDED_RELOCS: 815 command_line.embedded_relocs = TRUE; 816 break; 817 case OPTION_EXPORT_DYNAMIC: 818 case 'E': /* HP/UX compatibility. */ 819 link_info.export_dynamic = TRUE; 820 break; 821 case OPTION_NO_EXPORT_DYNAMIC: 822 link_info.export_dynamic = FALSE; 823 break; 824 case 'e': 825 lang_add_entry (optarg, TRUE); 826 break; 827 case 'f': 828 if (command_line.auxiliary_filters == NULL) 829 { 830 command_line.auxiliary_filters = (char **) 831 xmalloc (2 * sizeof (char *)); 832 command_line.auxiliary_filters[0] = optarg; 833 command_line.auxiliary_filters[1] = NULL; 834 } 835 else 836 { 837 int c; 838 char **p; 839 840 c = 0; 841 for (p = command_line.auxiliary_filters; *p != NULL; p++) 842 ++c; 843 command_line.auxiliary_filters = (char **) 844 xrealloc (command_line.auxiliary_filters, 845 (c + 2) * sizeof (char *)); 846 command_line.auxiliary_filters[c] = optarg; 847 command_line.auxiliary_filters[c + 1] = NULL; 848 } 849 break; 850 case 'F': 851 command_line.filter_shlib = optarg; 852 break; 853 case OPTION_FORCE_EXE_SUFFIX: 854 command_line.force_exe_suffix = TRUE; 855 break; 856 case 'G': 857 { 858 char *end; 859 g_switch_value = strtoul (optarg, &end, 0); 860 if (*end) 861 einfo (_("%P%F: invalid number `%s'\n"), optarg); 862 } 863 break; 864 case 'g': 865 /* Ignore. */ 866 break; 867 case OPTION_GC_SECTIONS: 868 link_info.gc_sections = TRUE; 869 break; 870 case OPTION_PRINT_GC_SECTIONS: 871 link_info.print_gc_sections = TRUE; 872 break; 873 case OPTION_HELP: 874 help (); 875 xexit (0); 876 break; 877 case 'L': 878 ldfile_add_library_path (optarg, TRUE); 879 break; 880 case 'l': 881 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 882 break; 883 case 'M': 884 config.map_filename = "-"; 885 break; 886 case 'm': 887 /* Ignore. Was handled in a pre-parse. */ 888 break; 889 case OPTION_MAP: 890 config.map_filename = optarg; 891 break; 892 case 'N': 893 config.text_read_only = FALSE; 894 config.magic_demand_paged = FALSE; 895 input_flags.dynamic = FALSE; 896 break; 897 case OPTION_NO_OMAGIC: 898 config.text_read_only = TRUE; 899 config.magic_demand_paged = TRUE; 900 /* NB/ Does not set input_flags.dynamic to TRUE. 901 Use --call-shared or -Bdynamic for this. */ 902 break; 903 case 'n': 904 config.magic_demand_paged = FALSE; 905 input_flags.dynamic = FALSE; 906 break; 907 case OPTION_NO_DEFINE_COMMON: 908 command_line.inhibit_common_definition = TRUE; 909 break; 910 case OPTION_NO_DEMANGLE: 911 demangling = FALSE; 912 break; 913 case OPTION_NO_GC_SECTIONS: 914 link_info.gc_sections = FALSE; 915 break; 916 case OPTION_NO_PRINT_GC_SECTIONS: 917 link_info.print_gc_sections = FALSE; 918 break; 919 case OPTION_NO_KEEP_MEMORY: 920 link_info.keep_memory = FALSE; 921 break; 922 case OPTION_NO_UNDEFINED: 923 link_info.unresolved_syms_in_objects 924 = how_to_report_unresolved_symbols; 925 break; 926 case OPTION_ALLOW_SHLIB_UNDEFINED: 927 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 928 break; 929 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 930 link_info.unresolved_syms_in_shared_libs 931 = how_to_report_unresolved_symbols; 932 break; 933 case OPTION_UNRESOLVED_SYMBOLS: 934 if (strcmp (optarg, "ignore-all") == 0) 935 { 936 link_info.unresolved_syms_in_objects = RM_IGNORE; 937 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 938 } 939 else if (strcmp (optarg, "report-all") == 0) 940 { 941 link_info.unresolved_syms_in_objects 942 = how_to_report_unresolved_symbols; 943 link_info.unresolved_syms_in_shared_libs 944 = how_to_report_unresolved_symbols; 945 } 946 else if (strcmp (optarg, "ignore-in-object-files") == 0) 947 { 948 link_info.unresolved_syms_in_objects = RM_IGNORE; 949 link_info.unresolved_syms_in_shared_libs 950 = how_to_report_unresolved_symbols; 951 } 952 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 953 { 954 link_info.unresolved_syms_in_objects 955 = how_to_report_unresolved_symbols; 956 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 957 } 958 else 959 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 960 break; 961 case OPTION_WARN_UNRESOLVED_SYMBOLS: 962 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 963 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 964 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 965 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 966 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 967 break; 968 969 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 970 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 971 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 972 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 973 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 974 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 975 break; 976 case OPTION_ALLOW_MULTIPLE_DEFINITION: 977 link_info.allow_multiple_definition = TRUE; 978 break; 979 case OPTION_NO_UNDEFINED_VERSION: 980 link_info.allow_undefined_version = FALSE; 981 break; 982 case OPTION_DEFAULT_SYMVER: 983 link_info.create_default_symver = TRUE; 984 break; 985 case OPTION_DEFAULT_IMPORTED_SYMVER: 986 link_info.default_imported_symver = TRUE; 987 break; 988 case OPTION_NO_WARN_MISMATCH: 989 command_line.warn_mismatch = FALSE; 990 break; 991 case OPTION_NO_WARN_SEARCH_MISMATCH: 992 command_line.warn_search_mismatch = FALSE; 993 break; 994 case OPTION_NOINHIBIT_EXEC: 995 force_make_executable = TRUE; 996 break; 997 case OPTION_NOSTDLIB: 998 config.only_cmd_line_lib_dirs = TRUE; 999 break; 1000 case OPTION_NO_WHOLE_ARCHIVE: 1001 input_flags.whole_archive = FALSE; 1002 break; 1003 case 'O': 1004 /* FIXME "-O<non-digits> <value>" used to set the address of 1005 section <non-digits>. Was this for compatibility with 1006 something, or can we create a new option to do that 1007 (with a syntax similar to -defsym)? 1008 getopt can't handle two args to an option without kludges. */ 1009 1010 /* Enable optimizations of output files. */ 1011 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 1012 break; 1013 case 'o': 1014 lang_add_output (optarg, 0); 1015 break; 1016 case OPTION_OFORMAT: 1017 lang_add_output_format (optarg, NULL, NULL, 0); 1018 break; 1019 case OPTION_PRINT_SYSROOT: 1020 if (*ld_sysroot) 1021 puts (ld_sysroot); 1022 xexit (0); 1023 break; 1024 case OPTION_PRINT_OUTPUT_FORMAT: 1025 command_line.print_output_format = TRUE; 1026 break; 1027 #ifdef ENABLE_PLUGINS 1028 case OPTION_PLUGIN: 1029 plugin_opt_plugin (optarg); 1030 break; 1031 case OPTION_PLUGIN_OPT: 1032 if (plugin_opt_plugin_arg (optarg)) 1033 einfo (_("%P%F: bad -plugin-opt option\n")); 1034 break; 1035 #endif /* ENABLE_PLUGINS */ 1036 case 'q': 1037 link_info.emitrelocations = TRUE; 1038 break; 1039 case 'i': 1040 case 'r': 1041 if (optind == last_optind) 1042 /* This can happen if the user put "-rpath,a" on the command 1043 line. (Or something similar. The comma is important). 1044 Getopt becomes confused and thinks that this is a -r option 1045 but it cannot parse the text after the -r so it refuses to 1046 increment the optind counter. Detect this case and issue 1047 an error message here. We cannot just make this a warning, 1048 increment optind, and continue because getopt is too confused 1049 and will seg-fault the next time around. */ 1050 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]); 1051 1052 if (bfd_link_pic (&link_info)) 1053 einfo (_("%P%F: -r and %s may not be used together\n"), 1054 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1055 1056 link_info.type = type_relocatable; 1057 config.build_constructors = FALSE; 1058 config.magic_demand_paged = FALSE; 1059 config.text_read_only = FALSE; 1060 input_flags.dynamic = FALSE; 1061 break; 1062 case 'R': 1063 /* The GNU linker traditionally uses -R to mean to include 1064 only the symbols from a file. The Solaris linker uses -R 1065 to set the path used by the runtime linker to find 1066 libraries. This is the GNU linker -rpath argument. We 1067 try to support both simultaneously by checking the file 1068 named. If it is a directory, rather than a regular file, 1069 we assume -rpath was meant. */ 1070 { 1071 struct stat s; 1072 1073 if (stat (optarg, &s) >= 0 1074 && ! S_ISDIR (s.st_mode)) 1075 { 1076 lang_add_input_file (optarg, 1077 lang_input_file_is_symbols_only_enum, 1078 NULL); 1079 break; 1080 } 1081 } 1082 /* Fall through. */ 1083 case OPTION_RPATH: 1084 if (command_line.rpath == NULL) 1085 command_line.rpath = xstrdup (optarg); 1086 else 1087 { 1088 size_t rpath_len = strlen (command_line.rpath); 1089 size_t optarg_len = strlen (optarg); 1090 char *buf; 1091 char *cp = command_line.rpath; 1092 1093 /* First see whether OPTARG is already in the path. */ 1094 do 1095 { 1096 if (strncmp (optarg, cp, optarg_len) == 0 1097 && (cp[optarg_len] == 0 1098 || cp[optarg_len] == config.rpath_separator)) 1099 /* We found it. */ 1100 break; 1101 1102 /* Not yet found. */ 1103 cp = strchr (cp, config.rpath_separator); 1104 if (cp != NULL) 1105 ++cp; 1106 } 1107 while (cp != NULL); 1108 1109 if (cp == NULL) 1110 { 1111 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1112 sprintf (buf, "%s%c%s", command_line.rpath, 1113 config.rpath_separator, optarg); 1114 free (command_line.rpath); 1115 command_line.rpath = buf; 1116 } 1117 } 1118 break; 1119 case OPTION_RPATH_LINK: 1120 if (command_line.rpath_link == NULL) 1121 command_line.rpath_link = xstrdup (optarg); 1122 else 1123 { 1124 char *buf; 1125 1126 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1127 + strlen (optarg) 1128 + 2); 1129 sprintf (buf, "%s%c%s", command_line.rpath_link, 1130 config.rpath_separator, optarg); 1131 free (command_line.rpath_link); 1132 command_line.rpath_link = buf; 1133 } 1134 break; 1135 case OPTION_NO_RELAX: 1136 DISABLE_RELAXATION; 1137 break; 1138 case OPTION_RELAX: 1139 ENABLE_RELAXATION; 1140 break; 1141 case OPTION_RETAIN_SYMBOLS_FILE: 1142 add_keepsyms_file (optarg); 1143 break; 1144 case 'S': 1145 link_info.strip = strip_debugger; 1146 break; 1147 case 's': 1148 link_info.strip = strip_all; 1149 break; 1150 case OPTION_STRIP_DISCARDED: 1151 link_info.strip_discarded = TRUE; 1152 break; 1153 case OPTION_NO_STRIP_DISCARDED: 1154 link_info.strip_discarded = FALSE; 1155 break; 1156 case OPTION_SHARED: 1157 if (config.has_shared) 1158 { 1159 if (bfd_link_relocatable (&link_info)) 1160 einfo (_("%P%F: -r and -shared may not be used together\n")); 1161 1162 link_info.type = type_dll; 1163 /* When creating a shared library, the default 1164 behaviour is to ignore any unresolved references. */ 1165 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1166 link_info.unresolved_syms_in_objects = RM_IGNORE; 1167 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1168 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1169 } 1170 else 1171 einfo (_("%P%F: -shared not supported\n")); 1172 break; 1173 case OPTION_PIE: 1174 if (config.has_shared) 1175 { 1176 if (bfd_link_relocatable (&link_info)) 1177 einfo (_("%P%F: -r and -pie may not be used together\n")); 1178 1179 link_info.type = type_pie; 1180 } 1181 else 1182 einfo (_("%P%F: -pie not supported\n")); 1183 break; 1184 case 'h': /* Used on Solaris. */ 1185 case OPTION_SONAME: 1186 if (optarg[0] == '\0' && command_line.soname 1187 && command_line.soname[0]) 1188 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1189 else 1190 command_line.soname = optarg; 1191 break; 1192 case OPTION_SORT_COMMON: 1193 if (optarg == NULL 1194 || strcmp (optarg, N_("descending")) == 0) 1195 config.sort_common = sort_descending; 1196 else if (strcmp (optarg, N_("ascending")) == 0) 1197 config.sort_common = sort_ascending; 1198 else 1199 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1200 optarg); 1201 break; 1202 case OPTION_SORT_SECTION: 1203 if (strcmp (optarg, N_("name")) == 0) 1204 sort_section = by_name; 1205 else if (strcmp (optarg, N_("alignment")) == 0) 1206 sort_section = by_alignment; 1207 else 1208 einfo (_("%P%F: invalid section sorting option: %s\n"), 1209 optarg); 1210 break; 1211 case OPTION_STATS: 1212 config.stats = TRUE; 1213 break; 1214 case OPTION_SYMBOLIC: 1215 command_line.symbolic = symbolic; 1216 break; 1217 case OPTION_SYMBOLIC_FUNCTIONS: 1218 command_line.symbolic = symbolic_functions; 1219 break; 1220 case 't': 1221 trace_files = TRUE; 1222 break; 1223 case 'T': 1224 previous_script_handle = saved_script_handle; 1225 ldfile_open_command_file (optarg); 1226 parser_input = input_script; 1227 yyparse (); 1228 previous_script_handle = NULL; 1229 break; 1230 case OPTION_DEFAULT_SCRIPT: 1231 command_line.default_script = optarg; 1232 break; 1233 case OPTION_SECTION_START: 1234 { 1235 char *optarg2; 1236 char *sec_name; 1237 int len; 1238 1239 /* Check for <something>=<somthing>... */ 1240 optarg2 = strchr (optarg, '='); 1241 if (optarg2 == NULL) 1242 einfo (_("%P%F: invalid argument to option" 1243 " \"--section-start\"\n")); 1244 1245 optarg2++; 1246 1247 /* So far so good. Are all the args present? */ 1248 if ((*optarg == '\0') || (*optarg2 == '\0')) 1249 einfo (_("%P%F: missing argument(s) to option" 1250 " \"--section-start\"\n")); 1251 1252 /* We must copy the section name as set_section_start 1253 doesn't do it for us. */ 1254 len = optarg2 - optarg; 1255 sec_name = (char *) xmalloc (len); 1256 memcpy (sec_name, optarg, len - 1); 1257 sec_name[len - 1] = 0; 1258 1259 /* Then set it... */ 1260 set_section_start (sec_name, optarg2); 1261 } 1262 break; 1263 case OPTION_TARGET_HELP: 1264 /* Mention any target specific options. */ 1265 ldemul_list_emulation_options (stdout); 1266 exit (0); 1267 case OPTION_TBSS: 1268 set_segment_start (".bss", optarg); 1269 break; 1270 case OPTION_TDATA: 1271 set_segment_start (".data", optarg); 1272 break; 1273 case OPTION_TTEXT: 1274 set_segment_start (".text", optarg); 1275 break; 1276 case OPTION_TTEXT_SEGMENT: 1277 set_segment_start (".text-segment", optarg); 1278 break; 1279 case OPTION_TRODATA_SEGMENT: 1280 set_segment_start (".rodata-segment", optarg); 1281 break; 1282 case OPTION_TLDATA_SEGMENT: 1283 set_segment_start (".ldata-segment", optarg); 1284 break; 1285 case OPTION_TRADITIONAL_FORMAT: 1286 link_info.traditional_format = TRUE; 1287 break; 1288 case OPTION_TASK_LINK: 1289 link_info.task_link = TRUE; 1290 /* Fall through - do an implied -r option. */ 1291 case OPTION_UR: 1292 if (bfd_link_pic (&link_info)) 1293 einfo (_("%P%F: -r and %s may not be used together\n"), 1294 bfd_link_dll (&link_info) ? "-shared" : "-pie"); 1295 1296 link_info.type = type_relocatable; 1297 config.build_constructors = TRUE; 1298 config.magic_demand_paged = FALSE; 1299 config.text_read_only = FALSE; 1300 input_flags.dynamic = FALSE; 1301 break; 1302 case 'u': 1303 ldlang_add_undef (optarg, TRUE); 1304 break; 1305 case OPTION_REQUIRE_DEFINED_SYMBOL: 1306 ldlang_add_require_defined (optarg); 1307 break; 1308 case OPTION_UNIQUE: 1309 if (optarg != NULL) 1310 lang_add_unique (optarg); 1311 else 1312 config.unique_orphan_sections = TRUE; 1313 break; 1314 case OPTION_VERBOSE: 1315 ldversion (1); 1316 version_printed = TRUE; 1317 verbose = TRUE; 1318 overflow_cutoff_limit = -2; 1319 if (optarg != NULL) 1320 { 1321 char *end; 1322 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1323 if (*end) 1324 einfo (_("%P%F: invalid number `%s'\n"), optarg); 1325 #ifdef ENABLE_PLUGINS 1326 report_plugin_symbols = level > 1; 1327 #endif /* ENABLE_PLUGINS */ 1328 } 1329 break; 1330 case 'v': 1331 ldversion (0); 1332 version_printed = TRUE; 1333 break; 1334 case 'V': 1335 ldversion (1); 1336 version_printed = TRUE; 1337 break; 1338 case OPTION_VERSION: 1339 ldversion (2); 1340 xexit (0); 1341 break; 1342 case OPTION_VERSION_SCRIPT: 1343 /* This option indicates a small script that only specifies 1344 version information. Read it, but don't assume that 1345 we've seen a linker script. */ 1346 { 1347 FILE *hold_script_handle; 1348 1349 hold_script_handle = saved_script_handle; 1350 ldfile_open_command_file (optarg); 1351 saved_script_handle = hold_script_handle; 1352 parser_input = input_version_script; 1353 yyparse (); 1354 } 1355 break; 1356 case OPTION_VERSION_EXPORTS_SECTION: 1357 /* This option records a version symbol to be applied to the 1358 symbols listed for export to be found in the object files 1359 .exports sections. */ 1360 command_line.version_exports_section = optarg; 1361 break; 1362 case OPTION_DYNAMIC_LIST_DATA: 1363 command_line.dynamic_list = dynamic_list_data; 1364 if (command_line.symbolic == symbolic) 1365 command_line.symbolic = symbolic_unset; 1366 break; 1367 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1368 lang_append_dynamic_list_cpp_typeinfo (); 1369 if (command_line.dynamic_list != dynamic_list_data) 1370 command_line.dynamic_list = dynamic_list; 1371 if (command_line.symbolic == symbolic) 1372 command_line.symbolic = symbolic_unset; 1373 break; 1374 case OPTION_DYNAMIC_LIST_CPP_NEW: 1375 lang_append_dynamic_list_cpp_new (); 1376 if (command_line.dynamic_list != dynamic_list_data) 1377 command_line.dynamic_list = dynamic_list; 1378 if (command_line.symbolic == symbolic) 1379 command_line.symbolic = symbolic_unset; 1380 break; 1381 case OPTION_DYNAMIC_LIST: 1382 /* This option indicates a small script that only specifies 1383 a dynamic list. Read it, but don't assume that we've 1384 seen a linker script. */ 1385 { 1386 FILE *hold_script_handle; 1387 1388 hold_script_handle = saved_script_handle; 1389 ldfile_open_command_file (optarg); 1390 saved_script_handle = hold_script_handle; 1391 parser_input = input_dynamic_list; 1392 yyparse (); 1393 } 1394 if (command_line.dynamic_list != dynamic_list_data) 1395 command_line.dynamic_list = dynamic_list; 1396 if (command_line.symbolic == symbolic) 1397 command_line.symbolic = symbolic_unset; 1398 break; 1399 case OPTION_WARN_COMMON: 1400 config.warn_common = TRUE; 1401 break; 1402 case OPTION_WARN_CONSTRUCTORS: 1403 config.warn_constructors = TRUE; 1404 break; 1405 case OPTION_WARN_FATAL: 1406 config.fatal_warnings = TRUE; 1407 break; 1408 case OPTION_NO_WARN_FATAL: 1409 config.fatal_warnings = FALSE; 1410 break; 1411 case OPTION_WARN_MULTIPLE_GP: 1412 config.warn_multiple_gp = TRUE; 1413 break; 1414 case OPTION_WARN_ONCE: 1415 config.warn_once = TRUE; 1416 break; 1417 case OPTION_WARN_SECTION_ALIGN: 1418 config.warn_section_align = TRUE; 1419 break; 1420 case OPTION_WARN_SHARED_TEXTREL: 1421 link_info.warn_shared_textrel = TRUE; 1422 break; 1423 case OPTION_WARN_ALTERNATE_EM: 1424 link_info.warn_alternate_em = TRUE; 1425 break; 1426 case OPTION_WHOLE_ARCHIVE: 1427 input_flags.whole_archive = TRUE; 1428 break; 1429 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1430 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1431 break; 1432 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1433 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1434 break; 1435 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1436 input_flags.add_DT_NEEDED_for_regular = TRUE; 1437 break; 1438 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1439 input_flags.add_DT_NEEDED_for_regular = FALSE; 1440 break; 1441 case OPTION_WRAP: 1442 add_wrap (optarg); 1443 break; 1444 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1445 add_ignoresym (&link_info, optarg); 1446 break; 1447 case OPTION_DISCARD_NONE: 1448 link_info.discard = discard_none; 1449 break; 1450 case 'X': 1451 link_info.discard = discard_l; 1452 break; 1453 case 'x': 1454 link_info.discard = discard_all; 1455 break; 1456 case 'Y': 1457 if (CONST_STRNEQ (optarg, "P,")) 1458 optarg += 2; 1459 if (default_dirlist != NULL) 1460 free (default_dirlist); 1461 default_dirlist = xstrdup (optarg); 1462 break; 1463 case 'y': 1464 add_ysym (optarg); 1465 break; 1466 case OPTION_SPARE_DYNAMIC_TAGS: 1467 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1468 break; 1469 case OPTION_SPLIT_BY_RELOC: 1470 if (optarg != NULL) 1471 config.split_by_reloc = strtoul (optarg, NULL, 0); 1472 else 1473 config.split_by_reloc = 32768; 1474 break; 1475 case OPTION_SPLIT_BY_FILE: 1476 if (optarg != NULL) 1477 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1478 else 1479 config.split_by_file = 1; 1480 break; 1481 case OPTION_CHECK_SECTIONS: 1482 command_line.check_section_addresses = 1; 1483 break; 1484 case OPTION_NO_CHECK_SECTIONS: 1485 command_line.check_section_addresses = 0; 1486 break; 1487 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1488 command_line.accept_unknown_input_arch = TRUE; 1489 break; 1490 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1491 command_line.accept_unknown_input_arch = FALSE; 1492 break; 1493 case '(': 1494 lang_enter_group (); 1495 ingroup++; 1496 break; 1497 case ')': 1498 if (! ingroup) 1499 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1500 1501 lang_leave_group (); 1502 ingroup--; 1503 break; 1504 1505 case OPTION_INIT: 1506 link_info.init_function = optarg; 1507 break; 1508 1509 case OPTION_FINI: 1510 link_info.fini_function = optarg; 1511 break; 1512 1513 case OPTION_REDUCE_MEMORY_OVERHEADS: 1514 link_info.reduce_memory_overheads = TRUE; 1515 if (config.hash_table_size == 0) 1516 config.hash_table_size = 1021; 1517 break; 1518 1519 case OPTION_HASH_SIZE: 1520 { 1521 bfd_size_type new_size; 1522 1523 new_size = strtoul (optarg, NULL, 0); 1524 if (new_size) 1525 config.hash_table_size = new_size; 1526 else 1527 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1528 } 1529 break; 1530 1531 case OPTION_PUSH_STATE: 1532 input_flags.pushed = xmemdup (&input_flags, 1533 sizeof (input_flags), 1534 sizeof (input_flags)); 1535 break; 1536 1537 case OPTION_POP_STATE: 1538 if (input_flags.pushed == NULL) 1539 einfo (_("%P%F: no state pushed before popping\n")); 1540 else 1541 { 1542 struct lang_input_statement_flags *oldp = input_flags.pushed; 1543 memcpy (&input_flags, oldp, sizeof (input_flags)); 1544 free (oldp); 1545 } 1546 break; 1547 1548 case OPTION_PRINT_MEMORY_USAGE: 1549 command_line.print_memory_usage = TRUE; 1550 break; 1551 1552 case OPTION_ORPHAN_HANDLING: 1553 if (strcasecmp (optarg, "place") == 0) 1554 config.orphan_handling = orphan_handling_place; 1555 else if (strcasecmp (optarg, "warn") == 0) 1556 config.orphan_handling = orphan_handling_warn; 1557 else if (strcasecmp (optarg, "error") == 0) 1558 config.orphan_handling = orphan_handling_error; 1559 else if (strcasecmp (optarg, "discard") == 0) 1560 config.orphan_handling = orphan_handling_discard; 1561 else 1562 einfo (_("%P%F: invalid argument to option" 1563 " \"--orphan-handling\"\n")); 1564 break; 1565 1566 case OPTION_WARN_POISON_SYSTEM_DIRECTORIES: 1567 command_line.warn_poison_system_directories = TRUE; 1568 break; 1569 1570 case OPTION_NO_WARN_POISON_SYSTEM_DIRECTORIES: 1571 command_line.warn_poison_system_directories = FALSE; 1572 break; 1573 1574 case OPTION_ERROR_POISON_SYSTEM_DIRECTORIES: 1575 command_line.error_poison_system_directories = TRUE; 1576 break; 1577 } 1578 } 1579 1580 if (command_line.soname && command_line.soname[0] == '\0') 1581 { 1582 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1583 command_line.soname = NULL; 1584 } 1585 1586 while (ingroup) 1587 { 1588 lang_leave_group (); 1589 ingroup--; 1590 } 1591 1592 if (default_dirlist != NULL) 1593 { 1594 set_default_dirlist (default_dirlist); 1595 free (default_dirlist); 1596 } 1597 1598 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1599 /* FIXME: Should we allow emulations a chance to set this ? */ 1600 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1601 1602 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1603 /* FIXME: Should we allow emulations a chance to set this ? */ 1604 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1605 1606 if (bfd_link_relocatable (&link_info) 1607 && command_line.check_section_addresses < 0) 1608 command_line.check_section_addresses = 0; 1609 1610 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1611 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1612 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1613 for PIC outputs. -Bsymbolic overrides all others and vice versa. */ 1614 switch (command_line.symbolic) 1615 { 1616 case symbolic_unset: 1617 break; 1618 case symbolic: 1619 /* -Bsymbolic is for PIC output only. */ 1620 if (bfd_link_pic (&link_info)) 1621 { 1622 link_info.symbolic = TRUE; 1623 /* Should we free the unused memory? */ 1624 link_info.dynamic_list = NULL; 1625 command_line.dynamic_list = dynamic_list_unset; 1626 } 1627 break; 1628 case symbolic_functions: 1629 /* -Bsymbolic-functions is for PIC output only. */ 1630 if (bfd_link_pic (&link_info)) 1631 command_line.dynamic_list = dynamic_list_data; 1632 break; 1633 } 1634 1635 switch (command_line.dynamic_list) 1636 { 1637 case dynamic_list_unset: 1638 break; 1639 case dynamic_list_data: 1640 link_info.dynamic_data = TRUE; 1641 case dynamic_list: 1642 link_info.dynamic = TRUE; 1643 break; 1644 } 1645 1646 if (!bfd_link_dll (&link_info)) 1647 { 1648 if (command_line.filter_shlib) 1649 einfo (_("%P%F: -F may not be used without -shared\n")); 1650 if (command_line.auxiliary_filters) 1651 einfo (_("%P%F: -f may not be used without -shared\n")); 1652 } 1653 1654 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1655 don't see how else this can be handled, since in this case we 1656 must preserve all externally visible symbols. */ 1657 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) 1658 { 1659 link_info.strip = strip_debugger; 1660 if (link_info.discard == discard_sec_merge) 1661 link_info.discard = discard_all; 1662 } 1663 } 1664 1665 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1666 library search path. */ 1667 1668 static void 1669 set_default_dirlist (char *dirlist_ptr) 1670 { 1671 char *p; 1672 1673 while (1) 1674 { 1675 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1676 if (p != NULL) 1677 *p = '\0'; 1678 if (*dirlist_ptr != '\0') 1679 ldfile_add_library_path (dirlist_ptr, TRUE); 1680 if (p == NULL) 1681 break; 1682 dirlist_ptr = p + 1; 1683 } 1684 } 1685 1686 static void 1687 set_section_start (char *sect, char *valstr) 1688 { 1689 const char *end; 1690 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1691 if (*end) 1692 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1693 lang_section_start (sect, exp_intop (val), NULL); 1694 } 1695 1696 static void 1697 set_segment_start (const char *section, char *valstr) 1698 { 1699 const char *name; 1700 const char *end; 1701 segment_type *seg; 1702 1703 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1704 if (*end) 1705 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1706 /* If we already have an entry for this segment, update the existing 1707 value. */ 1708 name = section + 1; 1709 for (seg = segments; seg; seg = seg->next) 1710 if (strcmp (seg->name, name) == 0) 1711 { 1712 seg->value = val; 1713 lang_section_start (section, exp_intop (val), seg); 1714 return; 1715 } 1716 /* There was no existing value so we must create a new segment 1717 entry. */ 1718 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1719 seg->name = name; 1720 seg->value = val; 1721 seg->used = FALSE; 1722 /* Add it to the linked list of segments. */ 1723 seg->next = segments; 1724 segments = seg; 1725 /* Historically, -Ttext and friends set the base address of a 1726 particular section. For backwards compatibility, we still do 1727 that. If a SEGMENT_START directive is seen, the section address 1728 assignment will be disabled. */ 1729 lang_section_start (section, exp_intop (val), seg); 1730 } 1731 1732 static void 1733 elf_shlib_list_options (FILE *file) 1734 { 1735 fprintf (file, _("\ 1736 --audit=AUDITLIB Specify a library to use for auditing\n")); 1737 fprintf (file, _("\ 1738 -Bgroup Selects group name lookup rules for DSO\n")); 1739 fprintf (file, _("\ 1740 --disable-new-dtags Disable new dynamic tags\n")); 1741 fprintf (file, _("\ 1742 --enable-new-dtags Enable new dynamic tags\n")); 1743 fprintf (file, _("\ 1744 --eh-frame-hdr Create .eh_frame_hdr section\n")); 1745 fprintf (file, _("\ 1746 --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); 1747 fprintf (file, _("\ 1748 --hash-style=STYLE Set hash style to sysv, gnu or both\n")); 1749 fprintf (file, _("\ 1750 -P AUDITLIB, --depaudit=AUDITLIB\n" "\ 1751 Specify a library to use for auditing dependencies\n")); 1752 fprintf (file, _("\ 1753 -z combreloc Merge dynamic relocs into one section and sort\n")); 1754 fprintf (file, _("\ 1755 -z nocombreloc Don't merge dynamic relocs into one section\n")); 1756 fprintf (file, _("\ 1757 -z global Make symbols in DSO available for subsequently\n\ 1758 loaded objects\n")); 1759 fprintf (file, _("\ 1760 -z initfirst Mark DSO to be initialized first at runtime\n")); 1761 fprintf (file, _("\ 1762 -z interpose Mark object to interpose all DSOs but executable\n")); 1763 fprintf (file, _("\ 1764 -z lazy Mark object lazy runtime binding (default)\n")); 1765 fprintf (file, _("\ 1766 -z loadfltr Mark object requiring immediate process\n")); 1767 fprintf (file, _("\ 1768 -z nocopyreloc Don't create copy relocs\n")); 1769 fprintf (file, _("\ 1770 -z nodefaultlib Mark object not to use default search paths\n")); 1771 fprintf (file, _("\ 1772 -z nodelete Mark DSO non-deletable at runtime\n")); 1773 fprintf (file, _("\ 1774 -z nodlopen Mark DSO not available to dlopen\n")); 1775 fprintf (file, _("\ 1776 -z nodump Mark DSO not available to dldump\n")); 1777 fprintf (file, _("\ 1778 -z now Mark object non-lazy runtime binding\n")); 1779 fprintf (file, _("\ 1780 -z origin Mark object requiring immediate $ORIGIN\n\ 1781 processing at runtime\n")); 1782 #if DEFAULT_LD_Z_RELRO 1783 fprintf (file, _("\ 1784 -z relro Create RELRO program header (default)\n")); 1785 fprintf (file, _("\ 1786 -z norelro Don't create RELRO program header\n")); 1787 #else 1788 fprintf (file, _("\ 1789 -z relro Create RELRO program header\n")); 1790 fprintf (file, _("\ 1791 -z norelro Don't create RELRO program header (default)\n")); 1792 #endif 1793 fprintf (file, _("\ 1794 -z common Generate common symbols with STT_COMMON type\n")); 1795 fprintf (file, _("\ 1796 -z nocommon Generate common symbols with STT_OBJECT type\n")); 1797 fprintf (file, _("\ 1798 -z stacksize=SIZE Set size of stack segment\n")); 1799 fprintf (file, _("\ 1800 -z text Treat DT_TEXTREL in shared object as error\n")); 1801 fprintf (file, _("\ 1802 -z notext Don't treat DT_TEXTREL in shared object as error\n")); 1803 fprintf (file, _("\ 1804 -z textoff Don't treat DT_TEXTREL in shared object as error\n")); 1805 } 1806 1807 static void 1808 elf_static_list_options (FILE *file) 1809 { 1810 fprintf (file, _("\ 1811 --build-id[=STYLE] Generate build ID note\n")); 1812 fprintf (file, _("\ 1813 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ 1814 Compress DWARF debug sections using zlib\n")); 1815 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 1816 fprintf (file, _("\ 1817 Default: zlib-gabi\n")); 1818 #else 1819 fprintf (file, _("\ 1820 Default: none\n")); 1821 #endif 1822 fprintf (file, _("\ 1823 -z common-page-size=SIZE Set common page size to SIZE\n")); 1824 fprintf (file, _("\ 1825 -z max-page-size=SIZE Set maximum page size to SIZE\n")); 1826 fprintf (file, _("\ 1827 -z defs Report unresolved symbols in object files.\n")); 1828 fprintf (file, _("\ 1829 -z muldefs Allow multiple definitions\n")); 1830 fprintf (file, _("\ 1831 -z execstack Mark executable as requiring executable stack\n")); 1832 fprintf (file, _("\ 1833 -z noexecstack Mark executable as not requiring executable stack\n")); 1834 } 1835 1836 static void 1837 elf_plt_unwind_list_options (FILE *file) 1838 { 1839 fprintf (file, _("\ 1840 --ld-generated-unwind-info Generate exception handling info for PLT\n\ 1841 --no-ld-generated-unwind-info\n\ 1842 Don't generate exception handling info for PLT\n")); 1843 } 1844 1845 static void 1846 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, 1847 bfd_boolean plt_unwind) 1848 { 1849 if (!elf) 1850 return; 1851 printf (_("ELF emulations:\n")); 1852 if (plt_unwind) 1853 elf_plt_unwind_list_options (file); 1854 elf_static_list_options (file); 1855 if (shlib) 1856 elf_shlib_list_options (file); 1857 } 1858 1859 1860 /* Print help messages for the options. */ 1862 1863 static void 1864 help (void) 1865 { 1866 unsigned i; 1867 const char **targets, **pp; 1868 int len; 1869 1870 printf (_("Usage: %s [options] file...\n"), program_name); 1871 1872 printf (_("Options:\n")); 1873 for (i = 0; i < OPTION_COUNT; i++) 1874 { 1875 if (ld_options[i].doc != NULL) 1876 { 1877 bfd_boolean comma; 1878 unsigned j; 1879 1880 printf (" "); 1881 1882 comma = FALSE; 1883 len = 2; 1884 1885 j = i; 1886 do 1887 { 1888 if (ld_options[j].shortopt != '\0' 1889 && ld_options[j].control != NO_HELP) 1890 { 1891 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1892 len += (comma ? 2 : 0) + 2; 1893 if (ld_options[j].arg != NULL) 1894 { 1895 if (ld_options[j].opt.has_arg != optional_argument) 1896 { 1897 printf (" "); 1898 ++len; 1899 } 1900 printf ("%s", _(ld_options[j].arg)); 1901 len += strlen (_(ld_options[j].arg)); 1902 } 1903 comma = TRUE; 1904 } 1905 ++j; 1906 } 1907 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1908 1909 j = i; 1910 do 1911 { 1912 if (ld_options[j].opt.name != NULL 1913 && ld_options[j].control != NO_HELP) 1914 { 1915 int two_dashes = 1916 (ld_options[j].control == TWO_DASHES 1917 || ld_options[j].control == EXACTLY_TWO_DASHES); 1918 1919 printf ("%s-%s%s", 1920 comma ? ", " : "", 1921 two_dashes ? "-" : "", 1922 ld_options[j].opt.name); 1923 len += ((comma ? 2 : 0) 1924 + 1 1925 + (two_dashes ? 1 : 0) 1926 + strlen (ld_options[j].opt.name)); 1927 if (ld_options[j].arg != NULL) 1928 { 1929 printf (" %s", _(ld_options[j].arg)); 1930 len += 1 + strlen (_(ld_options[j].arg)); 1931 } 1932 comma = TRUE; 1933 } 1934 ++j; 1935 } 1936 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1937 1938 if (len >= 30) 1939 { 1940 printf ("\n"); 1941 len = 0; 1942 } 1943 1944 for (; len < 30; len++) 1945 putchar (' '); 1946 1947 printf ("%s\n", _(ld_options[i].doc)); 1948 } 1949 } 1950 printf (_(" @FILE")); 1951 for (len = strlen (" @FILE"); len < 30; len++) 1952 putchar (' '); 1953 printf (_("Read options from FILE\n")); 1954 1955 /* Note: Various tools (such as libtool) depend upon the 1956 format of the listings below - do not change them. */ 1957 /* xgettext:c-format */ 1958 printf (_("%s: supported targets:"), program_name); 1959 targets = bfd_target_list (); 1960 for (pp = targets; *pp != NULL; pp++) 1961 printf (" %s", *pp); 1962 free (targets); 1963 printf ("\n"); 1964 1965 /* xgettext:c-format */ 1966 printf (_("%s: supported emulations: "), program_name); 1967 ldemul_list_emulations (stdout); 1968 printf ("\n"); 1969 1970 /* xgettext:c-format */ 1971 printf (_("%s: emulation specific options:\n"), program_name); 1972 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, 1973 ELF_PLT_UNWIND_LIST_OPTIONS); 1974 ldemul_list_emulation_options (stdout); 1975 printf ("\n"); 1976 1977 if (REPORT_BUGS_TO[0]) 1978 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1979 } 1980
