1 /* Parse options for the GNU linker. 2 Copyright (C) 1991-2014 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, 69 /* Use two dashes before long option name. */ 70 TWO_DASHES, 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 { {"library", required_argument, NULL, 'l'}, 142 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, 143 { {"library-path", required_argument, NULL, 'L'}, 144 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), 145 TWO_DASHES }, 146 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, 147 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, 148 { {NULL, required_argument, NULL, '\0'}, 149 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, 150 { {"print-map", no_argument, NULL, 'M'}, 151 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, 152 { {"nmagic", no_argument, NULL, 'n'}, 153 'n', NULL, N_("Do not page align data"), TWO_DASHES }, 154 { {"omagic", no_argument, NULL, 'N'}, 155 'N', NULL, N_("Do not page align data, do not make text readonly"), 156 EXACTLY_TWO_DASHES }, 157 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, 158 '\0', NULL, N_("Page align data, make text readonly"), 159 EXACTLY_TWO_DASHES }, 160 { {"output", required_argument, NULL, 'o'}, 161 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, 162 { {NULL, required_argument, NULL, '\0'}, 163 'O', NULL, N_("Optimize output file"), ONE_DASH }, 164 #ifdef ENABLE_PLUGINS 165 { {"plugin", required_argument, NULL, OPTION_PLUGIN}, 166 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, 167 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, 168 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, 169 { {"flto", optional_argument, NULL, OPTION_IGNORE}, 170 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 171 ONE_DASH }, 172 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, 173 '\0', NULL, N_("Ignored for GCC LTO option compatibility"), 174 ONE_DASH }, 175 #endif /* ENABLE_PLUGINS */ 176 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, 177 '\0', NULL, N_("Ignored for GCC linker option compatibility"), 178 ONE_DASH }, 179 { {"Qy", no_argument, NULL, OPTION_IGNORE}, 180 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, 181 { {"emit-relocs", no_argument, NULL, 'q'}, 182 'q', NULL, "Generate relocations in final output", TWO_DASHES }, 183 { {"relocatable", no_argument, NULL, 'r'}, 184 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, 185 { {NULL, no_argument, NULL, '\0'}, 186 'i', NULL, NULL, ONE_DASH }, 187 { {"just-symbols", required_argument, NULL, 'R'}, 188 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), 189 TWO_DASHES }, 190 { {"strip-all", no_argument, NULL, 's'}, 191 's', NULL, N_("Strip all symbols"), TWO_DASHES }, 192 { {"strip-debug", no_argument, NULL, 'S'}, 193 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, 194 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, 195 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, 196 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, 197 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, 198 { {"trace", no_argument, NULL, 't'}, 199 't', NULL, N_("Trace file opens"), TWO_DASHES }, 200 { {"script", required_argument, NULL, 'T'}, 201 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, 202 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 203 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, 204 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, 205 '\0', NULL, NULL, ONE_DASH }, 206 { {"undefined", required_argument, NULL, 'u'}, 207 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 208 TWO_DASHES }, 209 { {"unique", optional_argument, NULL, OPTION_UNIQUE}, 210 '\0', N_("[=SECTION]"), 211 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, 212 { {"Ur", no_argument, NULL, OPTION_UR}, 213 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, 214 { {"version", no_argument, NULL, OPTION_VERSION}, 215 'v', NULL, N_("Print version information"), TWO_DASHES }, 216 { {NULL, no_argument, NULL, '\0'}, 217 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, 218 { {"discard-all", no_argument, NULL, 'x'}, 219 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, 220 { {"discard-locals", no_argument, NULL, 'X'}, 221 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, 222 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, 223 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, 224 { {"trace-symbol", required_argument, NULL, 'y'}, 225 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, 226 { {NULL, required_argument, NULL, '\0'}, 227 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), 228 ONE_DASH }, 229 { {"start-group", no_argument, NULL, '('}, 230 '(', NULL, N_("Start a group"), TWO_DASHES }, 231 { {"end-group", no_argument, NULL, ')'}, 232 ')', NULL, N_("End a group"), TWO_DASHES }, 233 { {"accept-unknown-input-arch", no_argument, NULL, 234 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, 235 '\0', NULL, 236 N_("Accept input files whose architecture cannot be determined"), 237 TWO_DASHES }, 238 { {"no-accept-unknown-input-arch", no_argument, NULL, 239 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, 240 '\0', NULL, N_("Reject input files whose architecture is unknown"), 241 TWO_DASHES }, 242 243 /* The next two options are deprecated because of their similarity to 244 --as-needed and --no-as-needed. They have been replaced by 245 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ 246 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 247 '\0', NULL, NULL, NO_HELP }, 248 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 249 '\0', NULL, NULL, NO_HELP }, 250 251 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, 252 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), 253 TWO_DASHES }, 254 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, 255 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" 256 " the command line"), 257 TWO_DASHES }, 258 { {"assert", required_argument, NULL, OPTION_ASSERT}, 259 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, 260 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, 261 '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, 262 { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, 263 '\0', NULL, NULL, ONE_DASH }, 264 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, 265 '\0', NULL, NULL, ONE_DASH }, 266 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, 267 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, 268 { {"dn", no_argument, NULL, OPTION_NON_SHARED}, 269 '\0', NULL, NULL, ONE_DASH }, 270 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, 271 '\0', NULL, NULL, ONE_DASH }, 272 { {"static", no_argument, NULL, OPTION_NON_SHARED}, 273 '\0', NULL, NULL, ONE_DASH }, 274 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, 275 '\0', NULL, N_("Bind global references locally"), ONE_DASH }, 276 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, 277 '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, 278 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, 279 '\0', NULL, N_("Check section addresses for overlaps (default)"), 280 TWO_DASHES }, 281 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, 282 '\0', NULL, N_("Do not check section addresses for overlaps"), 283 TWO_DASHES }, 284 { {"copy-dt-needed-entries", no_argument, NULL, 285 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, 286 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), 287 TWO_DASHES }, 288 { {"no-copy-dt-needed-entries", no_argument, NULL, 289 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, 290 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), 291 TWO_DASHES }, 292 293 { {"cref", no_argument, NULL, OPTION_CREF}, 294 '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, 295 { {"defsym", required_argument, NULL, OPTION_DEFSYM}, 296 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, 297 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, 298 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), 299 TWO_DASHES }, 300 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, 301 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, 302 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}, 303 '\0', NULL, N_("Treat warnings as errors"), 304 TWO_DASHES }, 305 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL}, 306 '\0', NULL, N_("Do not treat warnings as errors (default)"), 307 TWO_DASHES }, 308 { {"fini", required_argument, NULL, OPTION_FINI}, 309 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, 310 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, 311 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, 312 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, 313 '\0', NULL, N_("Remove unused sections (on some targets)"), 314 TWO_DASHES }, 315 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS}, 316 '\0', NULL, N_("Don't remove unused sections (default)"), 317 TWO_DASHES }, 318 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS}, 319 '\0', NULL, N_("List removed unused sections on stderr"), 320 TWO_DASHES }, 321 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS}, 322 '\0', NULL, N_("Do not list removed unused sections"), 323 TWO_DASHES }, 324 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE}, 325 '\0', NULL, N_("Set default hash table size close to <NUMBER>"), 326 TWO_DASHES }, 327 { {"help", no_argument, NULL, OPTION_HELP}, 328 '\0', NULL, N_("Print option help"), TWO_DASHES }, 329 { {"init", required_argument, NULL, OPTION_INIT}, 330 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, 331 { {"Map", required_argument, NULL, OPTION_MAP}, 332 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, 333 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON}, 334 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES }, 335 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, 336 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES }, 337 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, 338 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES }, 339 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED}, 340 '\0', NULL, N_("Do not allow unresolved references in object files"), 341 TWO_DASHES }, 342 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, 343 '\0', NULL, N_("Allow unresolved references in shared libraries"), 344 TWO_DASHES }, 345 { {"no-allow-shlib-undefined", no_argument, NULL, 346 OPTION_NO_ALLOW_SHLIB_UNDEFINED}, 347 '\0', NULL, N_("Do not allow unresolved references in shared libs"), 348 TWO_DASHES }, 349 { {"allow-multiple-definition", no_argument, NULL, 350 OPTION_ALLOW_MULTIPLE_DEFINITION}, 351 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES }, 352 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION}, 353 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES }, 354 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER}, 355 '\0', NULL, N_("Create default symbol version"), TWO_DASHES }, 356 { {"default-imported-symver", no_argument, NULL, 357 OPTION_DEFAULT_IMPORTED_SYMVER}, 358 '\0', NULL, N_("Create default symbol version for imported symbols"), 359 TWO_DASHES }, 360 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH}, 361 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES}, 362 { {"no-warn-search-mismatch", no_argument, NULL, 363 OPTION_NO_WARN_SEARCH_MISMATCH}, 364 '\0', NULL, N_("Don't warn on finding an incompatible library"), 365 TWO_DASHES}, 366 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, 367 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES }, 368 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 369 '\0', NULL, N_("Create an output file even if errors occur"), 370 TWO_DASHES }, 371 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, 372 '\0', NULL, NULL, NO_HELP }, 373 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB}, 374 '\0', NULL, N_("Only use library directories specified on\n" 375 " the command line"), 376 ONE_DASH }, 377 { {"oformat", required_argument, NULL, OPTION_OFORMAT}, 378 '\0', N_("TARGET"), N_("Specify target of output file"), 379 EXACTLY_TWO_DASHES }, 380 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, 381 '\0', NULL, N_("Print default output format"), TWO_DASHES }, 382 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, 383 '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, 384 { {"qmagic", no_argument, NULL, OPTION_IGNORE}, 385 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, 386 { {"reduce-memory-overheads", no_argument, NULL, 387 OPTION_REDUCE_MEMORY_OVERHEADS}, 388 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"), 389 TWO_DASHES }, 390 { {"relax", no_argument, NULL, OPTION_RELAX}, 391 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES }, 392 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX}, 393 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES }, 394 { {"retain-symbols-file", required_argument, NULL, 395 OPTION_RETAIN_SYMBOLS_FILE}, 396 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES }, 397 { {"rpath", required_argument, NULL, OPTION_RPATH}, 398 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH }, 399 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, 400 '\0', N_("PATH"), N_("Set link time shared library search path"), 401 ONE_DASH }, 402 { {"shared", no_argument, NULL, OPTION_SHARED}, 403 '\0', NULL, N_("Create a shared library"), ONE_DASH }, 404 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ 405 '\0', NULL, NULL, ONE_DASH }, 406 { {"pie", no_argument, NULL, OPTION_PIE}, 407 '\0', NULL, N_("Create a position independent executable"), ONE_DASH }, 408 { {"pic-executable", no_argument, NULL, OPTION_PIE}, 409 '\0', NULL, NULL, TWO_DASHES }, 410 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, 411 '\0', N_("[=ascending|descending]"), 412 N_("Sort common symbols by alignment [in specified order]"), 413 TWO_DASHES }, 414 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, 415 '\0', NULL, NULL, NO_HELP }, 416 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, 417 '\0', N_("name|alignment"), 418 N_("Sort sections by name or maximum alignment"), TWO_DASHES }, 419 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, 420 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), 421 TWO_DASHES }, 422 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE}, 423 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), 424 TWO_DASHES }, 425 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC}, 426 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), 427 TWO_DASHES }, 428 { {"stats", no_argument, NULL, OPTION_STATS}, 429 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES }, 430 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, 431 '\0', NULL, N_("Display target specific options"), TWO_DASHES }, 432 { {"task-link", required_argument, NULL, OPTION_TASK_LINK}, 433 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES }, 434 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, 435 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES }, 436 { {"section-start", required_argument, NULL, OPTION_SECTION_START}, 437 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), 438 TWO_DASHES }, 439 { {"Tbss", required_argument, NULL, OPTION_TBSS}, 440 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH }, 441 { {"Tdata", required_argument, NULL, OPTION_TDATA}, 442 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH }, 443 { {"Ttext", required_argument, NULL, OPTION_TTEXT}, 444 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, 445 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, 446 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, 447 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, 448 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, 449 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, 450 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, 451 { {"unresolved-symbols=<method>", required_argument, NULL, 452 OPTION_UNRESOLVED_SYMBOLS}, 453 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" 454 " ignore-all, report-all, ignore-in-object-files,\n" 455 " ignore-in-shared-libs"), 456 TWO_DASHES }, 457 { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, 458 '\0', N_("[=NUMBER]"), 459 N_("Output lots of information during link"), TWO_DASHES }, 460 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ 461 '\0', NULL, NULL, NO_HELP }, 462 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, 463 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES }, 464 { {"version-exports-section", required_argument, NULL, 465 OPTION_VERSION_EXPORTS_SECTION }, 466 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n" 467 " SYMBOL as the version."), 468 TWO_DASHES }, 469 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA}, 470 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES }, 471 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW}, 472 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES }, 473 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO}, 474 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES }, 475 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST}, 476 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES }, 477 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, 478 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES }, 479 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, 480 '\0', NULL, N_("Warn if global constructors/destructors are seen"), 481 TWO_DASHES }, 482 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, 483 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES }, 484 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, 485 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES }, 486 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN}, 487 '\0', NULL, N_("Warn if start of section changes due to alignment"), 488 TWO_DASHES }, 489 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL}, 490 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"), 491 TWO_DASHES }, 492 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM}, 493 '\0', NULL, N_("Warn if an object has alternate ELF machine code"), 494 TWO_DASHES }, 495 { {"warn-unresolved-symbols", no_argument, NULL, 496 OPTION_WARN_UNRESOLVED_SYMBOLS}, 497 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES }, 498 { {"error-unresolved-symbols", no_argument, NULL, 499 OPTION_ERROR_UNRESOLVED_SYMBOLS}, 500 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES }, 501 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, 502 '\0', NULL, N_("Include all objects from following archives"), 503 TWO_DASHES }, 504 { {"wrap", required_argument, NULL, OPTION_WRAP}, 505 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, 506 { {"ignore-unresolved-symbol", required_argument, NULL, 507 OPTION_IGNORE_UNRESOLVED_SYMBOL}, 508 '\0', N_("SYMBOL"), 509 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, 510 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, 511 '\0', NULL, N_("Push state of flags governing input file handling"), 512 TWO_DASHES }, 513 { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, 514 '\0', NULL, N_("Pop state of flags governing input file handling"), 515 TWO_DASHES }, 516 { {"warn-poison-system-directories", no_argument, NULL, 517 OPTION_WARN_POISON_SYSTEM_DIRECTORIES}, 518 '\0', NULL, N_("Warn for -L options using system directories"), 519 TWO_DASHES }, 520 { {"no-warn-poison-system-directories", no_argument, NULL, 521 OPTION_NO_WARN_POISON_SYSTEM_DIRECTORIES}, 522 '\0', NULL, N_("Do not warn for -L options using system directories"), 523 TWO_DASHES }, 524 { {"error-poison-system-directories", no_argument, NULL, 525 OPTION_ERROR_POISON_SYSTEM_DIRECTORIES}, 526 '\0', NULL, N_("Give an error for -L options using system directories"), 527 TWO_DASHES }, 528 }; 529 530 #define OPTION_COUNT ARRAY_SIZE (ld_options) 531 532 void 533 parse_args (unsigned argc, char **argv) 534 { 535 unsigned i; 536 int is, il, irl; 537 int ingroup = 0; 538 char *default_dirlist = NULL; 539 char *shortopts; 540 struct option *longopts; 541 struct option *really_longopts; 542 int last_optind; 543 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 544 545 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2); 546 longopts = (struct option *) 547 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1)); 548 really_longopts = (struct option *) 549 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1)); 550 551 /* Starting the short option string with '-' is for programs that 552 expect options and other ARGV-elements in any order and that care about 553 the ordering of the two. We describe each non-option ARGV-element 554 as if it were the argument of an option with character code 1. */ 555 shortopts[0] = '-'; 556 is = 1; 557 il = 0; 558 irl = 0; 559 for (i = 0; i < OPTION_COUNT; i++) 560 { 561 if (ld_options[i].shortopt != '\0') 562 { 563 shortopts[is] = ld_options[i].shortopt; 564 ++is; 565 if (ld_options[i].opt.has_arg == required_argument 566 || ld_options[i].opt.has_arg == optional_argument) 567 { 568 shortopts[is] = ':'; 569 ++is; 570 if (ld_options[i].opt.has_arg == optional_argument) 571 { 572 shortopts[is] = ':'; 573 ++is; 574 } 575 } 576 } 577 if (ld_options[i].opt.name != NULL) 578 { 579 if (ld_options[i].control == EXACTLY_TWO_DASHES) 580 { 581 really_longopts[irl] = ld_options[i].opt; 582 ++irl; 583 } 584 else 585 { 586 longopts[il] = ld_options[i].opt; 587 ++il; 588 } 589 } 590 } 591 shortopts[is] = '\0'; 592 longopts[il].name = NULL; 593 really_longopts[irl].name = NULL; 594 595 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts); 596 597 /* The -G option is ambiguous on different platforms. Sometimes it 598 specifies the largest data size to put into the small data 599 section. Sometimes it is equivalent to --shared. Unfortunately, 600 the first form takes an argument, while the second does not. 601 602 We need to permit the --shared form because on some platforms, 603 such as Solaris, gcc -shared will pass -G to the linker. 604 605 To permit either usage, we look through the argument list. If we 606 find -G not followed by a number, we change it into --shared. 607 This will work for most normal cases. */ 608 for (i = 1; i < argc; i++) 609 if (strcmp (argv[i], "-G") == 0 610 && (i + 1 >= argc 611 || ! ISDIGIT (argv[i + 1][0]))) 612 argv[i] = (char *) "--shared"; 613 614 /* Because we permit long options to start with a single dash, and 615 we have a --library option, and the -l option is conventionally 616 used with an immediately following argument, we can have bad 617 results if somebody tries to use -l with a library whose name 618 happens to start with "ibrary", as in -li. We avoid problems by 619 simply turning -l into --library. This means that users will 620 have to use two dashes in order to use --library, which is OK 621 since that's how it is documented. 622 623 FIXME: It's possible that this problem can arise for other short 624 options as well, although the user does always have the recourse 625 of adding a space between the option and the argument. */ 626 for (i = 1; i < argc; i++) 627 { 628 if (argv[i][0] == '-' 629 && argv[i][1] == 'l' 630 && argv[i][2] != '\0') 631 { 632 char *n; 633 634 n = (char *) xmalloc (strlen (argv[i]) + 20); 635 sprintf (n, "--library=%s", argv[i] + 2); 636 argv[i] = n; 637 } 638 } 639 640 last_optind = -1; 641 while (1) 642 { 643 int longind; 644 int optc; 645 static unsigned int defsym_count; 646 647 /* Using last_optind lets us avoid calling ldemul_parse_args 648 multiple times on a single option, which would lead to 649 confusion in the internal static variables maintained by 650 getopt. This could otherwise happen for an argument like 651 -nx, in which the -n is parsed as a single option, and we 652 loop around to pick up the -x. */ 653 if (optind != last_optind) 654 if (ldemul_parse_args (argc, argv)) 655 continue; 656 657 /* getopt_long_only is like getopt_long, but '-' as well as '--' 658 can indicate a long option. */ 659 opterr = 0; 660 last_optind = optind; 661 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); 662 if (optc == '?') 663 { 664 optind = last_optind; 665 optc = getopt_long (argc, argv, "-", really_longopts, &longind); 666 } 667 668 if (ldemul_handle_option (optc)) 669 continue; 670 671 if (optc == -1) 672 break; 673 674 switch (optc) 675 { 676 case '?': 677 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]); 678 /* Fall through. */ 679 680 default: 681 einfo (_("%P%F: use the --help option for usage information\n")); 682 683 case 1: /* File name. */ 684 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL); 685 break; 686 687 case OPTION_IGNORE: 688 break; 689 case 'a': 690 /* For HP/UX compatibility. Actually -a shared should mean 691 ``use only shared libraries'' but, then, we don't 692 currently support shared libraries on HP/UX anyhow. */ 693 if (strcmp (optarg, "archive") == 0) 694 input_flags.dynamic = FALSE; 695 else if (strcmp (optarg, "shared") == 0 696 || strcmp (optarg, "default") == 0) 697 input_flags.dynamic = TRUE; 698 else 699 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); 700 break; 701 case OPTION_ASSERT: 702 /* FIXME: We just ignore these, but we should handle them. */ 703 if (strcmp (optarg, "definitions") == 0) 704 ; 705 else if (strcmp (optarg, "nodefinitions") == 0) 706 ; 707 else if (strcmp (optarg, "nosymbolic") == 0) 708 ; 709 else if (strcmp (optarg, "pure-text") == 0) 710 ; 711 else 712 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg); 713 break; 714 case 'A': 715 ldfile_add_arch (optarg); 716 break; 717 case 'b': 718 lang_add_target (optarg); 719 break; 720 case 'c': 721 ldfile_open_command_file (optarg); 722 parser_input = input_mri_script; 723 yyparse (); 724 break; 725 case OPTION_CALL_SHARED: 726 input_flags.dynamic = TRUE; 727 break; 728 case OPTION_NON_SHARED: 729 input_flags.dynamic = FALSE; 730 break; 731 case OPTION_CREF: 732 command_line.cref = TRUE; 733 link_info.notice_all = TRUE; 734 break; 735 case 'd': 736 command_line.force_common_definition = TRUE; 737 break; 738 case OPTION_DEFSYM: 739 lex_string = optarg; 740 lex_redirect (optarg, "--defsym", ++defsym_count); 741 parser_input = input_defsym; 742 yyparse (); 743 lex_string = NULL; 744 break; 745 case OPTION_DEMANGLE: 746 demangling = TRUE; 747 if (optarg != NULL) 748 { 749 enum demangling_styles style; 750 751 style = cplus_demangle_name_to_style (optarg); 752 if (style == unknown_demangling) 753 einfo (_("%F%P: unknown demangling style `%s'\n"), 754 optarg); 755 756 cplus_demangle_set_style (style); 757 } 758 break; 759 case 'I': /* Used on Solaris. */ 760 case OPTION_DYNAMIC_LINKER: 761 command_line.interpreter = optarg; 762 break; 763 case OPTION_SYSROOT: 764 /* Already handled in ldmain.c. */ 765 break; 766 case OPTION_EB: 767 command_line.endian = ENDIAN_BIG; 768 break; 769 case OPTION_EL: 770 command_line.endian = ENDIAN_LITTLE; 771 break; 772 case OPTION_EMBEDDED_RELOCS: 773 command_line.embedded_relocs = TRUE; 774 break; 775 case OPTION_EXPORT_DYNAMIC: 776 case 'E': /* HP/UX compatibility. */ 777 link_info.export_dynamic = TRUE; 778 break; 779 case OPTION_NO_EXPORT_DYNAMIC: 780 link_info.export_dynamic = FALSE; 781 break; 782 case 'e': 783 lang_add_entry (optarg, TRUE); 784 break; 785 case 'f': 786 if (command_line.auxiliary_filters == NULL) 787 { 788 command_line.auxiliary_filters = (char **) 789 xmalloc (2 * sizeof (char *)); 790 command_line.auxiliary_filters[0] = optarg; 791 command_line.auxiliary_filters[1] = NULL; 792 } 793 else 794 { 795 int c; 796 char **p; 797 798 c = 0; 799 for (p = command_line.auxiliary_filters; *p != NULL; p++) 800 ++c; 801 command_line.auxiliary_filters = (char **) 802 xrealloc (command_line.auxiliary_filters, 803 (c + 2) * sizeof (char *)); 804 command_line.auxiliary_filters[c] = optarg; 805 command_line.auxiliary_filters[c + 1] = NULL; 806 } 807 break; 808 case 'F': 809 command_line.filter_shlib = optarg; 810 break; 811 case OPTION_FORCE_EXE_SUFFIX: 812 command_line.force_exe_suffix = TRUE; 813 break; 814 case 'G': 815 { 816 char *end; 817 g_switch_value = strtoul (optarg, &end, 0); 818 if (*end) 819 einfo (_("%P%F: invalid number `%s'\n"), optarg); 820 } 821 break; 822 case 'g': 823 /* Ignore. */ 824 break; 825 case OPTION_GC_SECTIONS: 826 link_info.gc_sections = TRUE; 827 break; 828 case OPTION_PRINT_GC_SECTIONS: 829 link_info.print_gc_sections = TRUE; 830 break; 831 case OPTION_HELP: 832 help (); 833 xexit (0); 834 break; 835 case 'L': 836 ldfile_add_library_path (optarg, TRUE); 837 break; 838 case 'l': 839 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL); 840 break; 841 case 'M': 842 config.map_filename = "-"; 843 break; 844 case 'm': 845 /* Ignore. Was handled in a pre-parse. */ 846 break; 847 case OPTION_MAP: 848 config.map_filename = optarg; 849 break; 850 case 'N': 851 config.text_read_only = FALSE; 852 config.magic_demand_paged = FALSE; 853 input_flags.dynamic = FALSE; 854 break; 855 case OPTION_NO_OMAGIC: 856 config.text_read_only = TRUE; 857 config.magic_demand_paged = TRUE; 858 /* NB/ Does not set input_flags.dynamic to TRUE. 859 Use --call-shared or -Bdynamic for this. */ 860 break; 861 case 'n': 862 config.magic_demand_paged = FALSE; 863 input_flags.dynamic = FALSE; 864 break; 865 case OPTION_NO_DEFINE_COMMON: 866 command_line.inhibit_common_definition = TRUE; 867 break; 868 case OPTION_NO_DEMANGLE: 869 demangling = FALSE; 870 break; 871 case OPTION_NO_GC_SECTIONS: 872 link_info.gc_sections = FALSE; 873 break; 874 case OPTION_NO_PRINT_GC_SECTIONS: 875 link_info.print_gc_sections = FALSE; 876 break; 877 case OPTION_NO_KEEP_MEMORY: 878 link_info.keep_memory = FALSE; 879 break; 880 case OPTION_NO_UNDEFINED: 881 link_info.unresolved_syms_in_objects 882 = how_to_report_unresolved_symbols; 883 break; 884 case OPTION_ALLOW_SHLIB_UNDEFINED: 885 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 886 break; 887 case OPTION_NO_ALLOW_SHLIB_UNDEFINED: 888 link_info.unresolved_syms_in_shared_libs 889 = how_to_report_unresolved_symbols; 890 break; 891 case OPTION_UNRESOLVED_SYMBOLS: 892 if (strcmp (optarg, "ignore-all") == 0) 893 { 894 link_info.unresolved_syms_in_objects = RM_IGNORE; 895 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 896 } 897 else if (strcmp (optarg, "report-all") == 0) 898 { 899 link_info.unresolved_syms_in_objects 900 = how_to_report_unresolved_symbols; 901 link_info.unresolved_syms_in_shared_libs 902 = how_to_report_unresolved_symbols; 903 } 904 else if (strcmp (optarg, "ignore-in-object-files") == 0) 905 { 906 link_info.unresolved_syms_in_objects = RM_IGNORE; 907 link_info.unresolved_syms_in_shared_libs 908 = how_to_report_unresolved_symbols; 909 } 910 else if (strcmp (optarg, "ignore-in-shared-libs") == 0) 911 { 912 link_info.unresolved_syms_in_objects 913 = how_to_report_unresolved_symbols; 914 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 915 } 916 else 917 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg); 918 break; 919 case OPTION_WARN_UNRESOLVED_SYMBOLS: 920 how_to_report_unresolved_symbols = RM_GENERATE_WARNING; 921 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR) 922 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING; 923 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) 924 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING; 925 break; 926 927 case OPTION_ERROR_UNRESOLVED_SYMBOLS: 928 how_to_report_unresolved_symbols = RM_GENERATE_ERROR; 929 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING) 930 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; 931 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING) 932 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; 933 break; 934 case OPTION_ALLOW_MULTIPLE_DEFINITION: 935 link_info.allow_multiple_definition = TRUE; 936 break; 937 case OPTION_NO_UNDEFINED_VERSION: 938 link_info.allow_undefined_version = FALSE; 939 break; 940 case OPTION_DEFAULT_SYMVER: 941 link_info.create_default_symver = TRUE; 942 break; 943 case OPTION_DEFAULT_IMPORTED_SYMVER: 944 link_info.default_imported_symver = TRUE; 945 break; 946 case OPTION_NO_WARN_MISMATCH: 947 command_line.warn_mismatch = FALSE; 948 break; 949 case OPTION_NO_WARN_SEARCH_MISMATCH: 950 command_line.warn_search_mismatch = FALSE; 951 break; 952 case OPTION_NOINHIBIT_EXEC: 953 force_make_executable = TRUE; 954 break; 955 case OPTION_NOSTDLIB: 956 config.only_cmd_line_lib_dirs = TRUE; 957 break; 958 case OPTION_NO_WHOLE_ARCHIVE: 959 input_flags.whole_archive = FALSE; 960 break; 961 case 'O': 962 /* FIXME "-O<non-digits> <value>" used to set the address of 963 section <non-digits>. Was this for compatibility with 964 something, or can we create a new option to do that 965 (with a syntax similar to -defsym)? 966 getopt can't handle two args to an option without kludges. */ 967 968 /* Enable optimizations of output files. */ 969 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE; 970 break; 971 case 'o': 972 lang_add_output (optarg, 0); 973 break; 974 case OPTION_OFORMAT: 975 lang_add_output_format (optarg, NULL, NULL, 0); 976 break; 977 case OPTION_PRINT_SYSROOT: 978 if (*ld_sysroot) 979 puts (ld_sysroot); 980 xexit (0); 981 break; 982 case OPTION_PRINT_OUTPUT_FORMAT: 983 command_line.print_output_format = TRUE; 984 break; 985 #ifdef ENABLE_PLUGINS 986 case OPTION_PLUGIN: 987 plugin_opt_plugin (optarg); 988 break; 989 case OPTION_PLUGIN_OPT: 990 if (plugin_opt_plugin_arg (optarg)) 991 einfo(_("%P%F: bad -plugin-opt option\n")); 992 break; 993 #endif /* ENABLE_PLUGINS */ 994 case 'q': 995 link_info.emitrelocations = TRUE; 996 break; 997 case 'i': 998 case 'r': 999 if (optind == last_optind) 1000 /* This can happen if the user put "-rpath,a" on the command 1001 line. (Or something similar. The comma is important). 1002 Getopt becomes confused and thinks that this is a -r option 1003 but it cannot parse the text after the -r so it refuses to 1004 increment the optind counter. Detect this case and issue 1005 an error message here. We cannot just make this a warning, 1006 increment optind, and continue because getopt is too confused 1007 and will seg-fault the next time around. */ 1008 einfo(_("%P%F: bad -rpath option\n")); 1009 1010 link_info.relocatable = TRUE; 1011 config.build_constructors = FALSE; 1012 config.magic_demand_paged = FALSE; 1013 config.text_read_only = FALSE; 1014 input_flags.dynamic = FALSE; 1015 break; 1016 case 'R': 1017 /* The GNU linker traditionally uses -R to mean to include 1018 only the symbols from a file. The Solaris linker uses -R 1019 to set the path used by the runtime linker to find 1020 libraries. This is the GNU linker -rpath argument. We 1021 try to support both simultaneously by checking the file 1022 named. If it is a directory, rather than a regular file, 1023 we assume -rpath was meant. */ 1024 { 1025 struct stat s; 1026 1027 if (stat (optarg, &s) >= 0 1028 && ! S_ISDIR (s.st_mode)) 1029 { 1030 lang_add_input_file (optarg, 1031 lang_input_file_is_symbols_only_enum, 1032 NULL); 1033 break; 1034 } 1035 } 1036 /* Fall through. */ 1037 case OPTION_RPATH: 1038 if (command_line.rpath == NULL) 1039 command_line.rpath = xstrdup (optarg); 1040 else 1041 { 1042 size_t rpath_len = strlen (command_line.rpath); 1043 size_t optarg_len = strlen (optarg); 1044 char *buf; 1045 char *cp = command_line.rpath; 1046 1047 /* First see whether OPTARG is already in the path. */ 1048 do 1049 { 1050 if (strncmp (optarg, cp, optarg_len) == 0 1051 && (cp[optarg_len] == 0 1052 || cp[optarg_len] == config.rpath_separator)) 1053 /* We found it. */ 1054 break; 1055 1056 /* Not yet found. */ 1057 cp = strchr (cp, config.rpath_separator); 1058 if (cp != NULL) 1059 ++cp; 1060 } 1061 while (cp != NULL); 1062 1063 if (cp == NULL) 1064 { 1065 buf = (char *) xmalloc (rpath_len + optarg_len + 2); 1066 sprintf (buf, "%s%c%s", command_line.rpath, 1067 config.rpath_separator, optarg); 1068 free (command_line.rpath); 1069 command_line.rpath = buf; 1070 } 1071 } 1072 break; 1073 case OPTION_RPATH_LINK: 1074 if (command_line.rpath_link == NULL) 1075 command_line.rpath_link = xstrdup (optarg); 1076 else 1077 { 1078 char *buf; 1079 1080 buf = (char *) xmalloc (strlen (command_line.rpath_link) 1081 + strlen (optarg) 1082 + 2); 1083 sprintf (buf, "%s%c%s", command_line.rpath_link, 1084 config.rpath_separator, optarg); 1085 free (command_line.rpath_link); 1086 command_line.rpath_link = buf; 1087 } 1088 break; 1089 case OPTION_NO_RELAX: 1090 DISABLE_RELAXATION; 1091 break; 1092 case OPTION_RELAX: 1093 ENABLE_RELAXATION; 1094 break; 1095 case OPTION_RETAIN_SYMBOLS_FILE: 1096 add_keepsyms_file (optarg); 1097 break; 1098 case 'S': 1099 link_info.strip = strip_debugger; 1100 break; 1101 case 's': 1102 link_info.strip = strip_all; 1103 break; 1104 case OPTION_STRIP_DISCARDED: 1105 link_info.strip_discarded = TRUE; 1106 break; 1107 case OPTION_NO_STRIP_DISCARDED: 1108 link_info.strip_discarded = FALSE; 1109 break; 1110 case OPTION_SHARED: 1111 if (config.has_shared) 1112 { 1113 link_info.shared = TRUE; 1114 /* When creating a shared library, the default 1115 behaviour is to ignore any unresolved references. */ 1116 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1117 link_info.unresolved_syms_in_objects = RM_IGNORE; 1118 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1119 link_info.unresolved_syms_in_shared_libs = RM_IGNORE; 1120 } 1121 else 1122 einfo (_("%P%F: -shared not supported\n")); 1123 break; 1124 case OPTION_PIE: 1125 if (config.has_shared) 1126 { 1127 link_info.shared = TRUE; 1128 link_info.pie = TRUE; 1129 } 1130 else 1131 einfo (_("%P%F: -pie not supported\n")); 1132 break; 1133 case 'h': /* Used on Solaris. */ 1134 case OPTION_SONAME: 1135 if (optarg[0] == '\0' && command_line.soname 1136 && command_line.soname[0]) 1137 einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); 1138 else 1139 command_line.soname = optarg; 1140 break; 1141 case OPTION_SORT_COMMON: 1142 if (optarg == NULL 1143 || strcmp (optarg, N_("descending")) == 0) 1144 config.sort_common = sort_descending; 1145 else if (strcmp (optarg, N_("ascending")) == 0) 1146 config.sort_common = sort_ascending; 1147 else 1148 einfo (_("%P%F: invalid common section sorting option: %s\n"), 1149 optarg); 1150 break; 1151 case OPTION_SORT_SECTION: 1152 if (strcmp (optarg, N_("name")) == 0) 1153 sort_section = by_name; 1154 else if (strcmp (optarg, N_("alignment")) == 0) 1155 sort_section = by_alignment; 1156 else 1157 einfo (_("%P%F: invalid section sorting option: %s\n"), 1158 optarg); 1159 break; 1160 case OPTION_STATS: 1161 config.stats = TRUE; 1162 break; 1163 case OPTION_SYMBOLIC: 1164 command_line.symbolic = symbolic; 1165 break; 1166 case OPTION_SYMBOLIC_FUNCTIONS: 1167 command_line.symbolic = symbolic_functions; 1168 break; 1169 case 't': 1170 trace_files = TRUE; 1171 break; 1172 case 'T': 1173 previous_script_handle = saved_script_handle; 1174 ldfile_open_command_file (optarg); 1175 parser_input = input_script; 1176 yyparse (); 1177 previous_script_handle = NULL; 1178 break; 1179 case OPTION_DEFAULT_SCRIPT: 1180 command_line.default_script = optarg; 1181 break; 1182 case OPTION_SECTION_START: 1183 { 1184 char *optarg2; 1185 char *sec_name; 1186 int len; 1187 1188 /* Check for <something>=<somthing>... */ 1189 optarg2 = strchr (optarg, '='); 1190 if (optarg2 == NULL) 1191 einfo (_("%P%F: invalid argument to option" 1192 " \"--section-start\"\n")); 1193 1194 optarg2++; 1195 1196 /* So far so good. Are all the args present? */ 1197 if ((*optarg == '\0') || (*optarg2 == '\0')) 1198 einfo (_("%P%F: missing argument(s) to option" 1199 " \"--section-start\"\n")); 1200 1201 /* We must copy the section name as set_section_start 1202 doesn't do it for us. */ 1203 len = optarg2 - optarg; 1204 sec_name = (char *) xmalloc (len); 1205 memcpy (sec_name, optarg, len - 1); 1206 sec_name[len - 1] = 0; 1207 1208 /* Then set it... */ 1209 set_section_start (sec_name, optarg2); 1210 } 1211 break; 1212 case OPTION_TARGET_HELP: 1213 /* Mention any target specific options. */ 1214 ldemul_list_emulation_options (stdout); 1215 exit (0); 1216 case OPTION_TBSS: 1217 set_segment_start (".bss", optarg); 1218 break; 1219 case OPTION_TDATA: 1220 set_segment_start (".data", optarg); 1221 break; 1222 case OPTION_TTEXT: 1223 set_segment_start (".text", optarg); 1224 break; 1225 case OPTION_TTEXT_SEGMENT: 1226 set_segment_start (".text-segment", optarg); 1227 break; 1228 case OPTION_TRODATA_SEGMENT: 1229 set_segment_start (".rodata-segment", optarg); 1230 break; 1231 case OPTION_TLDATA_SEGMENT: 1232 set_segment_start (".ldata-segment", optarg); 1233 break; 1234 case OPTION_TRADITIONAL_FORMAT: 1235 link_info.traditional_format = TRUE; 1236 break; 1237 case OPTION_TASK_LINK: 1238 link_info.task_link = TRUE; 1239 /* Fall through - do an implied -r option. */ 1240 case OPTION_UR: 1241 link_info.relocatable = TRUE; 1242 config.build_constructors = TRUE; 1243 config.magic_demand_paged = FALSE; 1244 config.text_read_only = FALSE; 1245 input_flags.dynamic = FALSE; 1246 break; 1247 case 'u': 1248 ldlang_add_undef (optarg, TRUE); 1249 break; 1250 case OPTION_UNIQUE: 1251 if (optarg != NULL) 1252 lang_add_unique (optarg); 1253 else 1254 config.unique_orphan_sections = TRUE; 1255 break; 1256 case OPTION_VERBOSE: 1257 ldversion (1); 1258 version_printed = TRUE; 1259 verbose = TRUE; 1260 overflow_cutoff_limit = -2; 1261 if (optarg != NULL) 1262 { 1263 char *end; 1264 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); 1265 if (*end) 1266 einfo (_("%P%F: invalid number `%s'\n"), optarg); 1267 #ifdef ENABLE_PLUGINS 1268 report_plugin_symbols = level > 1; 1269 #endif /* ENABLE_PLUGINS */ 1270 } 1271 break; 1272 case 'v': 1273 ldversion (0); 1274 version_printed = TRUE; 1275 break; 1276 case 'V': 1277 ldversion (1); 1278 version_printed = TRUE; 1279 break; 1280 case OPTION_VERSION: 1281 ldversion (2); 1282 xexit (0); 1283 break; 1284 case OPTION_VERSION_SCRIPT: 1285 /* This option indicates a small script that only specifies 1286 version information. Read it, but don't assume that 1287 we've seen a linker script. */ 1288 { 1289 FILE *hold_script_handle; 1290 1291 hold_script_handle = saved_script_handle; 1292 ldfile_open_command_file (optarg); 1293 saved_script_handle = hold_script_handle; 1294 parser_input = input_version_script; 1295 yyparse (); 1296 } 1297 break; 1298 case OPTION_VERSION_EXPORTS_SECTION: 1299 /* This option records a version symbol to be applied to the 1300 symbols listed for export to be found in the object files 1301 .exports sections. */ 1302 command_line.version_exports_section = optarg; 1303 break; 1304 case OPTION_DYNAMIC_LIST_DATA: 1305 command_line.dynamic_list = dynamic_list_data; 1306 if (command_line.symbolic == symbolic) 1307 command_line.symbolic = symbolic_unset; 1308 break; 1309 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO: 1310 lang_append_dynamic_list_cpp_typeinfo (); 1311 if (command_line.dynamic_list != dynamic_list_data) 1312 command_line.dynamic_list = dynamic_list; 1313 if (command_line.symbolic == symbolic) 1314 command_line.symbolic = symbolic_unset; 1315 break; 1316 case OPTION_DYNAMIC_LIST_CPP_NEW: 1317 lang_append_dynamic_list_cpp_new (); 1318 if (command_line.dynamic_list != dynamic_list_data) 1319 command_line.dynamic_list = dynamic_list; 1320 if (command_line.symbolic == symbolic) 1321 command_line.symbolic = symbolic_unset; 1322 break; 1323 case OPTION_DYNAMIC_LIST: 1324 /* This option indicates a small script that only specifies 1325 a dynamic list. Read it, but don't assume that we've 1326 seen a linker script. */ 1327 { 1328 FILE *hold_script_handle; 1329 1330 hold_script_handle = saved_script_handle; 1331 ldfile_open_command_file (optarg); 1332 saved_script_handle = hold_script_handle; 1333 parser_input = input_dynamic_list; 1334 yyparse (); 1335 } 1336 if (command_line.dynamic_list != dynamic_list_data) 1337 command_line.dynamic_list = dynamic_list; 1338 if (command_line.symbolic == symbolic) 1339 command_line.symbolic = symbolic_unset; 1340 break; 1341 case OPTION_WARN_COMMON: 1342 config.warn_common = TRUE; 1343 break; 1344 case OPTION_WARN_CONSTRUCTORS: 1345 config.warn_constructors = TRUE; 1346 break; 1347 case OPTION_WARN_FATAL: 1348 config.fatal_warnings = TRUE; 1349 break; 1350 case OPTION_NO_WARN_FATAL: 1351 config.fatal_warnings = FALSE; 1352 break; 1353 case OPTION_WARN_MULTIPLE_GP: 1354 config.warn_multiple_gp = TRUE; 1355 break; 1356 case OPTION_WARN_ONCE: 1357 config.warn_once = TRUE; 1358 break; 1359 case OPTION_WARN_SECTION_ALIGN: 1360 config.warn_section_align = TRUE; 1361 break; 1362 case OPTION_WARN_SHARED_TEXTREL: 1363 link_info.warn_shared_textrel = TRUE; 1364 break; 1365 case OPTION_WARN_ALTERNATE_EM: 1366 link_info.warn_alternate_em = TRUE; 1367 break; 1368 case OPTION_WHOLE_ARCHIVE: 1369 input_flags.whole_archive = TRUE; 1370 break; 1371 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: 1372 input_flags.add_DT_NEEDED_for_dynamic = TRUE; 1373 break; 1374 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: 1375 input_flags.add_DT_NEEDED_for_dynamic = FALSE; 1376 break; 1377 case OPTION_ADD_DT_NEEDED_FOR_REGULAR: 1378 input_flags.add_DT_NEEDED_for_regular = TRUE; 1379 break; 1380 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: 1381 input_flags.add_DT_NEEDED_for_regular = FALSE; 1382 break; 1383 case OPTION_WRAP: 1384 add_wrap (optarg); 1385 break; 1386 case OPTION_IGNORE_UNRESOLVED_SYMBOL: 1387 add_ignoresym (&link_info, optarg); 1388 break; 1389 case OPTION_DISCARD_NONE: 1390 link_info.discard = discard_none; 1391 break; 1392 case 'X': 1393 link_info.discard = discard_l; 1394 break; 1395 case 'x': 1396 link_info.discard = discard_all; 1397 break; 1398 case 'Y': 1399 if (CONST_STRNEQ (optarg, "P,")) 1400 optarg += 2; 1401 if (default_dirlist != NULL) 1402 free (default_dirlist); 1403 default_dirlist = xstrdup (optarg); 1404 break; 1405 case 'y': 1406 add_ysym (optarg); 1407 break; 1408 case OPTION_SPARE_DYNAMIC_TAGS: 1409 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0); 1410 break; 1411 case OPTION_SPLIT_BY_RELOC: 1412 if (optarg != NULL) 1413 config.split_by_reloc = strtoul (optarg, NULL, 0); 1414 else 1415 config.split_by_reloc = 32768; 1416 break; 1417 case OPTION_SPLIT_BY_FILE: 1418 if (optarg != NULL) 1419 config.split_by_file = bfd_scan_vma (optarg, NULL, 0); 1420 else 1421 config.split_by_file = 1; 1422 break; 1423 case OPTION_CHECK_SECTIONS: 1424 command_line.check_section_addresses = 1; 1425 break; 1426 case OPTION_NO_CHECK_SECTIONS: 1427 command_line.check_section_addresses = 0; 1428 break; 1429 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH: 1430 command_line.accept_unknown_input_arch = TRUE; 1431 break; 1432 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH: 1433 command_line.accept_unknown_input_arch = FALSE; 1434 break; 1435 case '(': 1436 lang_enter_group (); 1437 ingroup++; 1438 break; 1439 case ')': 1440 if (! ingroup) 1441 einfo (_("%P%F: group ended before it began (--help for usage)\n")); 1442 1443 lang_leave_group (); 1444 ingroup--; 1445 break; 1446 1447 case OPTION_INIT: 1448 link_info.init_function = optarg; 1449 break; 1450 1451 case OPTION_FINI: 1452 link_info.fini_function = optarg; 1453 break; 1454 1455 case OPTION_REDUCE_MEMORY_OVERHEADS: 1456 link_info.reduce_memory_overheads = TRUE; 1457 if (config.hash_table_size == 0) 1458 config.hash_table_size = 1021; 1459 break; 1460 1461 case OPTION_HASH_SIZE: 1462 { 1463 bfd_size_type new_size; 1464 1465 new_size = strtoul (optarg, NULL, 0); 1466 if (new_size) 1467 config.hash_table_size = new_size; 1468 else 1469 einfo (_("%P%X: --hash-size needs a numeric argument\n")); 1470 } 1471 break; 1472 1473 case OPTION_PUSH_STATE: 1474 input_flags.pushed = xmemdup (&input_flags, 1475 sizeof (input_flags), 1476 sizeof (input_flags)); 1477 break; 1478 1479 case OPTION_POP_STATE: 1480 if (input_flags.pushed == NULL) 1481 einfo (_("%P%F: no state pushed before popping\n")); 1482 else 1483 { 1484 struct lang_input_statement_flags *oldp = input_flags.pushed; 1485 memcpy (&input_flags, oldp, sizeof (input_flags)); 1486 free (oldp); 1487 } 1488 break; 1489 1490 case OPTION_WARN_POISON_SYSTEM_DIRECTORIES: 1491 command_line.warn_poison_system_directories = TRUE; 1492 break; 1493 1494 case OPTION_NO_WARN_POISON_SYSTEM_DIRECTORIES: 1495 command_line.warn_poison_system_directories = FALSE; 1496 break; 1497 1498 case OPTION_ERROR_POISON_SYSTEM_DIRECTORIES: 1499 command_line.error_poison_system_directories = TRUE; 1500 break; 1501 } 1502 } 1503 1504 if (command_line.soname && command_line.soname[0] == '\0') 1505 { 1506 einfo (_("%P: SONAME must not be empty string; ignored\n")); 1507 command_line.soname = NULL; 1508 } 1509 1510 while (ingroup) 1511 { 1512 lang_leave_group (); 1513 ingroup--; 1514 } 1515 1516 if (default_dirlist != NULL) 1517 { 1518 set_default_dirlist (default_dirlist); 1519 free (default_dirlist); 1520 } 1521 1522 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 1523 /* FIXME: Should we allow emulations a chance to set this ? */ 1524 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols; 1525 1526 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) 1527 /* FIXME: Should we allow emulations a chance to set this ? */ 1528 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; 1529 1530 if (link_info.relocatable) 1531 { 1532 if (command_line.check_section_addresses < 0) 1533 command_line.check_section_addresses = 0; 1534 if (link_info.shared) 1535 einfo (_("%P%F: -r and -shared may not be used together\n")); 1536 } 1537 1538 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, 1539 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and 1540 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are 1541 for shared libraries. -Bsymbolic overrides all others and vice 1542 versa. */ 1543 switch (command_line.symbolic) 1544 { 1545 case symbolic_unset: 1546 break; 1547 case symbolic: 1548 /* -Bsymbolic is for shared library only. */ 1549 if (link_info.shared) 1550 { 1551 link_info.symbolic = TRUE; 1552 /* Should we free the unused memory? */ 1553 link_info.dynamic_list = NULL; 1554 command_line.dynamic_list = dynamic_list_unset; 1555 } 1556 break; 1557 case symbolic_functions: 1558 /* -Bsymbolic-functions is for shared library only. */ 1559 if (link_info.shared) 1560 command_line.dynamic_list = dynamic_list_data; 1561 break; 1562 } 1563 1564 switch (command_line.dynamic_list) 1565 { 1566 case dynamic_list_unset: 1567 break; 1568 case dynamic_list_data: 1569 link_info.dynamic_data = TRUE; 1570 case dynamic_list: 1571 link_info.dynamic = TRUE; 1572 break; 1573 } 1574 1575 if (! link_info.shared) 1576 { 1577 if (command_line.filter_shlib) 1578 einfo (_("%P%F: -F may not be used without -shared\n")); 1579 if (command_line.auxiliary_filters) 1580 einfo (_("%P%F: -f may not be used without -shared\n")); 1581 } 1582 1583 if (! link_info.shared || link_info.pie) 1584 link_info.executable = TRUE; 1585 1586 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I 1587 don't see how else this can be handled, since in this case we 1588 must preserve all externally visible symbols. */ 1589 if (link_info.relocatable && link_info.strip == strip_all) 1590 { 1591 link_info.strip = strip_debugger; 1592 if (link_info.discard == discard_sec_merge) 1593 link_info.discard = discard_all; 1594 } 1595 } 1596 1597 /* Add the (colon-separated) elements of DIRLIST_PTR to the 1598 library search path. */ 1599 1600 static void 1601 set_default_dirlist (char *dirlist_ptr) 1602 { 1603 char *p; 1604 1605 while (1) 1606 { 1607 p = strchr (dirlist_ptr, PATH_SEPARATOR); 1608 if (p != NULL) 1609 *p = '\0'; 1610 if (*dirlist_ptr != '\0') 1611 ldfile_add_library_path (dirlist_ptr, TRUE); 1612 if (p == NULL) 1613 break; 1614 dirlist_ptr = p + 1; 1615 } 1616 } 1617 1618 static void 1619 set_section_start (char *sect, char *valstr) 1620 { 1621 const char *end; 1622 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1623 if (*end) 1624 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1625 lang_section_start (sect, exp_intop (val), NULL); 1626 } 1627 1628 static void 1629 set_segment_start (const char *section, char *valstr) 1630 { 1631 const char *name; 1632 const char *end; 1633 segment_type *seg; 1634 1635 bfd_vma val = bfd_scan_vma (valstr, &end, 16); 1636 if (*end) 1637 einfo (_("%P%F: invalid hex number `%s'\n"), valstr); 1638 /* If we already have an entry for this segment, update the existing 1639 value. */ 1640 name = section + 1; 1641 for (seg = segments; seg; seg = seg->next) 1642 if (strcmp (seg->name, name) == 0) 1643 { 1644 seg->value = val; 1645 return; 1646 } 1647 /* There was no existing value so we must create a new segment 1648 entry. */ 1649 seg = (segment_type *) stat_alloc (sizeof (*seg)); 1650 seg->name = name; 1651 seg->value = val; 1652 seg->used = FALSE; 1653 /* Add it to the linked list of segments. */ 1654 seg->next = segments; 1655 segments = seg; 1656 /* Historically, -Ttext and friends set the base address of a 1657 particular section. For backwards compatibility, we still do 1658 that. If a SEGMENT_START directive is seen, the section address 1659 assignment will be disabled. */ 1660 lang_section_start (section, exp_intop (val), seg); 1661 } 1662 1663 1664 /* Print help messages for the options. */ 1666 1667 static void 1668 help (void) 1669 { 1670 unsigned i; 1671 const char **targets, **pp; 1672 int len; 1673 1674 printf (_("Usage: %s [options] file...\n"), program_name); 1675 1676 printf (_("Options:\n")); 1677 for (i = 0; i < OPTION_COUNT; i++) 1678 { 1679 if (ld_options[i].doc != NULL) 1680 { 1681 bfd_boolean comma; 1682 unsigned j; 1683 1684 printf (" "); 1685 1686 comma = FALSE; 1687 len = 2; 1688 1689 j = i; 1690 do 1691 { 1692 if (ld_options[j].shortopt != '\0' 1693 && ld_options[j].control != NO_HELP) 1694 { 1695 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); 1696 len += (comma ? 2 : 0) + 2; 1697 if (ld_options[j].arg != NULL) 1698 { 1699 if (ld_options[j].opt.has_arg != optional_argument) 1700 { 1701 printf (" "); 1702 ++len; 1703 } 1704 printf ("%s", _(ld_options[j].arg)); 1705 len += strlen (_(ld_options[j].arg)); 1706 } 1707 comma = TRUE; 1708 } 1709 ++j; 1710 } 1711 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1712 1713 j = i; 1714 do 1715 { 1716 if (ld_options[j].opt.name != NULL 1717 && ld_options[j].control != NO_HELP) 1718 { 1719 int two_dashes = 1720 (ld_options[j].control == TWO_DASHES 1721 || ld_options[j].control == EXACTLY_TWO_DASHES); 1722 1723 printf ("%s-%s%s", 1724 comma ? ", " : "", 1725 two_dashes ? "-" : "", 1726 ld_options[j].opt.name); 1727 len += ((comma ? 2 : 0) 1728 + 1 1729 + (two_dashes ? 1 : 0) 1730 + strlen (ld_options[j].opt.name)); 1731 if (ld_options[j].arg != NULL) 1732 { 1733 printf (" %s", _(ld_options[j].arg)); 1734 len += 1 + strlen (_(ld_options[j].arg)); 1735 } 1736 comma = TRUE; 1737 } 1738 ++j; 1739 } 1740 while (j < OPTION_COUNT && ld_options[j].doc == NULL); 1741 1742 if (len >= 30) 1743 { 1744 printf ("\n"); 1745 len = 0; 1746 } 1747 1748 for (; len < 30; len++) 1749 putchar (' '); 1750 1751 printf ("%s\n", _(ld_options[i].doc)); 1752 } 1753 } 1754 printf (_(" @FILE")); 1755 for (len = strlen (" @FILE"); len < 30; len++) 1756 putchar (' '); 1757 printf (_("Read options from FILE\n")); 1758 1759 /* Note: Various tools (such as libtool) depend upon the 1760 format of the listings below - do not change them. */ 1761 /* xgettext:c-format */ 1762 printf (_("%s: supported targets:"), program_name); 1763 targets = bfd_target_list (); 1764 for (pp = targets; *pp != NULL; pp++) 1765 printf (" %s", *pp); 1766 free (targets); 1767 printf ("\n"); 1768 1769 /* xgettext:c-format */ 1770 printf (_("%s: supported emulations: "), program_name); 1771 ldemul_list_emulations (stdout); 1772 printf ("\n"); 1773 1774 /* xgettext:c-format */ 1775 printf (_("%s: emulation specific options:\n"), program_name); 1776 ldemul_list_emulation_options (stdout); 1777 printf ("\n"); 1778 1779 if (REPORT_BUGS_TO[0]) 1780 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); 1781 } 1782
