| 1 | /* Parse options for the GNU linker. |
| 2 | Copyright (C) 1991, 92, 93, 94, 95, 1996 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GLD, the Gnu Linker. |
| 5 | |
| 6 | GLD 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 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GLD 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 GLD; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #include "bfd.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "libiberty.h" |
| 23 | #include <stdio.h> |
| 24 | #include <string.h> |
| 25 | #include <ctype.h> |
| 26 | #include "getopt.h" |
| 27 | #include "bfdlink.h" |
| 28 | #include "ld.h" |
| 29 | #include "ldmain.h" |
| 30 | #include "ldmisc.h" |
| 31 | #include "ldexp.h" |
| 32 | #include "ldlang.h" |
| 33 | #include "ldgram.h" |
| 34 | #include "ldlex.h" |
| 35 | #include "ldfile.h" |
| 36 | #include "ldver.h" |
| 37 | #include "ldemul.h" |
| 38 | |
| 39 | /* Somewhere above, sys/stat.h got included . . . . */ |
| 40 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
| 41 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
| 42 | #endif |
| 43 | |
| 44 | /* Omit args to avoid the possibility of clashing with a system header |
| 45 | that might disagree about consts. */ |
| 46 | unsigned long strtoul (); |
| 47 | |
| 48 | static void set_default_dirlist PARAMS ((char *dirlist_ptr)); |
| 49 | static void set_section_start PARAMS ((char *sect, char *valstr)); |
| 50 | static void help PARAMS ((void)); |
| 51 | |
| 52 | /* Non-zero if we are processing a --defsym from the command line. */ |
| 53 | int parsing_defsym = 0; |
| 54 | |
| 55 | /* Codes used for the long options with no short synonyms. 150 isn't |
| 56 | special; it's just an arbitrary non-ASCII char value. */ |
| 57 | |
| 58 | #define OPTION_ASSERT 150 |
| 59 | #define OPTION_CALL_SHARED (OPTION_ASSERT + 1) |
| 60 | #define OPTION_CREF (OPTION_CALL_SHARED + 1) |
| 61 | #define OPTION_DEFSYM (OPTION_CREF + 1) |
| 62 | #define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1) |
| 63 | #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1) |
| 64 | #define OPTION_EL (OPTION_EB + 1) |
| 65 | #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1) |
| 66 | #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1) |
| 67 | #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1) |
| 68 | #define OPTION_IGNORE (OPTION_HELP + 1) |
| 69 | #define OPTION_MAP (OPTION_IGNORE + 1) |
| 70 | #define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1) |
| 71 | #define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1) |
| 72 | #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1) |
| 73 | #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1) |
| 74 | #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1) |
| 75 | #define OPTION_RELAX (OPTION_OFORMAT + 1) |
| 76 | #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1) |
| 77 | #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1) |
| 78 | #define OPTION_RPATH_LINK (OPTION_RPATH + 1) |
| 79 | #define OPTION_SHARED (OPTION_RPATH_LINK + 1) |
| 80 | #define OPTION_SONAME (OPTION_SHARED + 1) |
| 81 | #define OPTION_SORT_COMMON (OPTION_SONAME + 1) |
| 82 | #define OPTION_STATS (OPTION_SORT_COMMON + 1) |
| 83 | #define OPTION_SYMBOLIC (OPTION_STATS + 1) |
| 84 | #define OPTION_TBSS (OPTION_SYMBOLIC + 1) |
| 85 | #define OPTION_TDATA (OPTION_TBSS + 1) |
| 86 | #define OPTION_TTEXT (OPTION_TDATA + 1) |
| 87 | #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1) |
| 88 | #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1) |
| 89 | #define OPTION_VERBOSE (OPTION_UR + 1) |
| 90 | #define OPTION_VERSION (OPTION_VERBOSE + 1) |
| 91 | #define OPTION_WARN_COMMON (OPTION_VERSION + 1) |
| 92 | #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1) |
| 93 | #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1) |
| 94 | #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1) |
| 95 | #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1) |
| 96 | #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1) |
| 97 | #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1) |
| 98 | #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1) |
| 99 | #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1) |
| 100 | |
| 101 | /* The long options. This structure is used for both the option |
| 102 | parsing and the help text. */ |
| 103 | |
| 104 | struct ld_option |
| 105 | { |
| 106 | /* The long option information. */ |
| 107 | struct option opt; |
| 108 | /* The short option with the same meaning ('\0' if none). */ |
| 109 | char shortopt; |
| 110 | /* The name of the argument (NULL if none). */ |
| 111 | const char *arg; |
| 112 | /* The documentation string. If this is NULL, this is a synonym for |
| 113 | the previous option. */ |
| 114 | const char *doc; |
| 115 | enum |
| 116 | { |
| 117 | /* Use one dash before long option name. */ |
| 118 | ONE_DASH, |
| 119 | /* Use two dashes before long option name. */ |
| 120 | TWO_DASHES, |
| 121 | /* Don't mention this option in --help output. */ |
| 122 | NO_HELP |
| 123 | } control; |
| 124 | }; |
| 125 | |
| 126 | static const struct ld_option ld_options[] = |
| 127 | { |
| 128 | { {NULL, required_argument, NULL, '\0'}, |
| 129 | 'a', "KEYWORD", "Shared library control for HP/UX compatibility", |
| 130 | ONE_DASH }, |
| 131 | { {"architecture", required_argument, NULL, 'A'}, |
| 132 | 'A', "ARCH", "Set architecture" , TWO_DASHES }, |
| 133 | { {"format", required_argument, NULL, 'b'}, |
| 134 | 'b', "TARGET", "Specify target for following input files", TWO_DASHES }, |
| 135 | { {"mri-script", required_argument, NULL, 'c'}, |
| 136 | 'c', "FILE", "Read MRI format linker script", TWO_DASHES }, |
| 137 | { {"dc", no_argument, NULL, 'd'}, |
| 138 | 'd', NULL, "Force common symbols to be defined", ONE_DASH }, |
| 139 | { {"dp", no_argument, NULL, 'd'}, |
| 140 | '\0', NULL, NULL, ONE_DASH }, |
| 141 | { {"entry", required_argument, NULL, 'e'}, |
| 142 | 'e', "ADDRESS", "Set start address", TWO_DASHES }, |
| 143 | { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, |
| 144 | 'E', NULL, "Export all dynamic symbols", TWO_DASHES }, |
| 145 | { {NULL, optional_argument, NULL, '\0'}, |
| 146 | 'F', "[FORMAT]", "Ignored", ONE_DASH }, |
| 147 | { {NULL, no_argument, NULL, '\0'}, |
| 148 | 'g', NULL, "Ignored", ONE_DASH }, |
| 149 | { {"gpsize", required_argument, NULL, 'G'}, |
| 150 | 'G', "SIZE", "Small data size (if no size, same as --shared)", |
| 151 | TWO_DASHES }, |
| 152 | { {"soname", required_argument, NULL, OPTION_SONAME}, |
| 153 | 'h', "FILENAME", "Set internal name of shared library", ONE_DASH }, |
| 154 | { {"library", required_argument, NULL, 'l'}, |
| 155 | 'l', "LIBNAME", "Search for library LIBNAME", TWO_DASHES }, |
| 156 | { {"library-path", required_argument, NULL, 'L'}, |
| 157 | 'L', "DIRECTORY", "Add DIRECTORY to library search path", TWO_DASHES }, |
| 158 | { {NULL, required_argument, NULL, '\0'}, |
| 159 | 'm', "EMULATION", "Set emulation", ONE_DASH }, |
| 160 | { {"print-map", no_argument, NULL, 'M'}, |
| 161 | 'M', NULL, "Print map file on standard output", TWO_DASHES }, |
| 162 | { {"nmagic", no_argument, NULL, 'n'}, |
| 163 | 'n', NULL, "Do not page align data", TWO_DASHES }, |
| 164 | { {"omagic", no_argument, NULL, 'N'}, |
| 165 | 'N', NULL, "Do not page align data, do not make text readonly", |
| 166 | TWO_DASHES }, |
| 167 | { {"output", required_argument, NULL, 'o'}, |
| 168 | 'o', "FILE", "Set output file name", TWO_DASHES }, |
| 169 | { {NULL, required_argument, NULL, '\0'}, |
| 170 | 'O', NULL, "Ignored", ONE_DASH }, |
| 171 | { {"relocateable", no_argument, NULL, 'r'}, |
| 172 | 'r', NULL, "Generate relocateable output", TWO_DASHES }, |
| 173 | { {NULL, no_argument, NULL, '\0'}, |
| 174 | 'i', NULL, NULL, ONE_DASH }, |
| 175 | { {"just-symbols", required_argument, NULL, 'R'}, |
| 176 | 'R', "FILE", "Just link symbols (if directory, same as --rpath)", |
| 177 | TWO_DASHES }, |
| 178 | { {"strip-all", no_argument, NULL, 's'}, |
| 179 | 's', NULL, "Strip all symbols", TWO_DASHES }, |
| 180 | { {"strip-debug", no_argument, NULL, 'S'}, |
| 181 | 'S', NULL, "Strip debugging symbols", TWO_DASHES }, |
| 182 | { {"trace", no_argument, NULL, 't'}, |
| 183 | 't', NULL, "Trace file opens", TWO_DASHES }, |
| 184 | { {"script", required_argument, NULL, 'T'}, |
| 185 | 'T', "FILE", "Read linker script", TWO_DASHES }, |
| 186 | { {"undefined", required_argument, NULL, 'u'}, |
| 187 | 'u', "SYMBOL", "Start with undefined reference to SYMBOL", TWO_DASHES }, |
| 188 | { {"version", no_argument, NULL, OPTION_VERSION}, |
| 189 | 'v', NULL, "Print version information", TWO_DASHES }, |
| 190 | { {NULL, no_argument, NULL, '\0'}, |
| 191 | 'V', NULL, "Print version and emulation information", ONE_DASH }, |
| 192 | { {"discard-all", no_argument, NULL, 'x'}, |
| 193 | 'x', NULL, "Discard all local symbols", TWO_DASHES }, |
| 194 | { {"discard-locals", no_argument, NULL, 'X'}, |
| 195 | 'X', NULL, "Discard temporary local symbols", TWO_DASHES }, |
| 196 | { {"trace-symbol", required_argument, NULL, 'y'}, |
| 197 | 'y', "SYMBOL", "Trace mentions of SYMBOL", TWO_DASHES }, |
| 198 | { {NULL, required_argument, NULL, '\0'}, |
| 199 | 'Y', "PATH", "Default search path for Solaris compatibility", ONE_DASH }, |
| 200 | { {NULL, required_argument, NULL, '\0'}, |
| 201 | 'z', "KEYWORD", "Ignored for Solaris compatibility", ONE_DASH }, |
| 202 | { {"start-group", no_argument, NULL, '('}, |
| 203 | '(', NULL, "Start a group", TWO_DASHES }, |
| 204 | { {"end-group", no_argument, NULL, ')'}, |
| 205 | ')', NULL, "End a group", TWO_DASHES }, |
| 206 | { {"assert", required_argument, NULL, OPTION_ASSERT}, |
| 207 | '\0', "KEYWORD", "Ignored for SunOS compatibility", ONE_DASH }, |
| 208 | { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, |
| 209 | '\0', NULL, "Link against shared libraries", ONE_DASH }, |
| 210 | { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, |
| 211 | '\0', NULL, NULL, ONE_DASH }, |
| 212 | { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, |
| 213 | '\0', NULL, NULL, ONE_DASH }, |
| 214 | { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, |
| 215 | '\0', NULL, "Do not link against shared libraries", ONE_DASH }, |
| 216 | { {"dn", no_argument, NULL, OPTION_NON_SHARED}, |
| 217 | '\0', NULL, NULL, ONE_DASH }, |
| 218 | { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
| 219 | '\0', NULL, NULL, ONE_DASH }, |
| 220 | { {"static", no_argument, NULL, OPTION_NON_SHARED}, |
| 221 | '\0', NULL, NULL, ONE_DASH }, |
| 222 | { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, |
| 223 | '\0', NULL, "Bind global references locally", ONE_DASH }, |
| 224 | { {"cref", no_argument, NULL, OPTION_CREF}, |
| 225 | '\0', NULL, "Output cross reference table", TWO_DASHES }, |
| 226 | { {"defsym", required_argument, NULL, OPTION_DEFSYM}, |
| 227 | '\0', "SYMBOL=EXPRESSION", "Define a symbol", TWO_DASHES }, |
| 228 | { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, |
| 229 | '\0', "PROGRAM", "Set the dynamic linker to use", TWO_DASHES }, |
| 230 | { {"EB", no_argument, NULL, OPTION_EB}, |
| 231 | '\0', NULL, "Link big-endian objects", ONE_DASH }, |
| 232 | { {"EL", no_argument, NULL, OPTION_EL}, |
| 233 | '\0', NULL, "Link little-endian objects", ONE_DASH }, |
| 234 | { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, |
| 235 | '\0', NULL, "Generate embedded relocs", TWO_DASHES}, |
| 236 | { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, |
| 237 | '\0', NULL, "Force generation of file with .exe suffix", TWO_DASHES}, |
| 238 | { {"help", no_argument, NULL, OPTION_HELP}, |
| 239 | '\0', NULL, "Print option help", TWO_DASHES }, |
| 240 | { {"Map", required_argument, NULL, OPTION_MAP}, |
| 241 | '\0', "FILE", "Write a map file", ONE_DASH }, |
| 242 | { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, |
| 243 | '\0', NULL, "Use less memory and more disk I/O", TWO_DASHES }, |
| 244 | { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE}, |
| 245 | '\0', NULL, "Turn off --whole-archive", TWO_DASHES }, |
| 246 | { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, |
| 247 | '\0', NULL, "Create an output file even if errors occur", TWO_DASHES }, |
| 248 | { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, |
| 249 | '\0', NULL, NULL, NO_HELP }, |
| 250 | { {"oformat", required_argument, NULL, OPTION_OFORMAT}, |
| 251 | '\0', "TARGET", "Specify target of output file", TWO_DASHES }, |
| 252 | { {"qmagic", no_argument, NULL, OPTION_IGNORE}, |
| 253 | '\0', NULL, "Ignored for Linux compatibility", ONE_DASH }, |
| 254 | { {"Qy", no_argument, NULL, OPTION_IGNORE}, |
| 255 | '\0', NULL, "Ignored for SVR4 compatibility", ONE_DASH }, |
| 256 | { {"relax", no_argument, NULL, OPTION_RELAX}, |
| 257 | '\0', NULL, "Relax branches on certain targets", TWO_DASHES }, |
| 258 | { {"retain-symbols-file", required_argument, NULL, |
| 259 | OPTION_RETAIN_SYMBOLS_FILE}, |
| 260 | '\0', "FILE", "Keep only symbols listed in FILE", TWO_DASHES }, |
| 261 | { {"rpath", required_argument, NULL, OPTION_RPATH}, |
| 262 | '\0', "PATH", "Set runtime shared library search path", ONE_DASH }, |
| 263 | { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK}, |
| 264 | '\0', "PATH", "Set link time shared library search path", ONE_DASH }, |
| 265 | { {"shared", no_argument, NULL, OPTION_SHARED}, |
| 266 | '\0', NULL, "Create a shared library", ONE_DASH }, |
| 267 | { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */ |
| 268 | '\0', NULL, NULL, ONE_DASH }, |
| 269 | { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, |
| 270 | '\0', NULL, "Sort common symbols by size", TWO_DASHES }, |
| 271 | { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, |
| 272 | '\0', NULL, NULL, NO_HELP }, |
| 273 | { {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE}, |
| 274 | '\0', NULL, "Split output sections for each file", TWO_DASHES }, |
| 275 | { {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC}, |
| 276 | '\0', "COUNT", "Split output sections every COUNT relocs", TWO_DASHES }, |
| 277 | { {"stats", no_argument, NULL, OPTION_STATS}, |
| 278 | '\0', NULL, "Print memory usage statistics", TWO_DASHES }, |
| 279 | { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, |
| 280 | '\0', NULL, "Use same format as native linker", TWO_DASHES }, |
| 281 | { {"Tbss", required_argument, NULL, OPTION_TBSS}, |
| 282 | '\0', "ADDRESS", "Set address of .bss section", ONE_DASH }, |
| 283 | { {"Tdata", required_argument, NULL, OPTION_TDATA}, |
| 284 | '\0', "ADDRESS", "Set address of .data section", ONE_DASH }, |
| 285 | { {"Ttext", required_argument, NULL, OPTION_TTEXT}, |
| 286 | '\0', "ADDRESS", "Set address of .text section", ONE_DASH }, |
| 287 | { {"Ur", no_argument, NULL, OPTION_UR}, |
| 288 | '\0', NULL, "Build global constructor/destructor tables", ONE_DASH }, |
| 289 | { {"verbose", no_argument, NULL, OPTION_VERBOSE}, |
| 290 | '\0', NULL, "Output lots of information during link", TWO_DASHES }, |
| 291 | { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ |
| 292 | '\0', NULL, NULL, NO_HELP }, |
| 293 | { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, |
| 294 | '\0', NULL, "Warn about duplicate common symbols", TWO_DASHES }, |
| 295 | { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, |
| 296 | '\0', NULL, "Warn if global constructors/destructors are seen", |
| 297 | TWO_DASHES }, |
| 298 | { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP}, |
| 299 | '\0', NULL, "Warn if the multiple GP values are used", TWO_DASHES }, |
| 300 | { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, |
| 301 | '\0', NULL, "Warn only once per undefined symbol", TWO_DASHES }, |
| 302 | { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, |
| 303 | '\0', NULL, "Include all objects from following archives", TWO_DASHES }, |
| 304 | { {"wrap", required_argument, NULL, OPTION_WRAP}, |
| 305 | '\0', "SYMBOL", "Use wrapper functions for SYMBOL", TWO_DASHES } |
| 306 | }; |
| 307 | |
| 308 | #define OPTION_COUNT (sizeof ld_options / sizeof ld_options[0]) |
| 309 | |
| 310 | void |
| 311 | parse_args (argc, argv) |
| 312 | int argc; |
| 313 | char **argv; |
| 314 | { |
| 315 | int i, is, il; |
| 316 | int ingroup = 0; |
| 317 | char *default_dirlist = NULL; |
| 318 | char shortopts[OPTION_COUNT * 3 + 2]; |
| 319 | struct option longopts[OPTION_COUNT + 1]; |
| 320 | |
| 321 | /* Starting the short option string with '-' is for programs that |
| 322 | expect options and other ARGV-elements in any order and that care about |
| 323 | the ordering of the two. We describe each non-option ARGV-element |
| 324 | as if it were the argument of an option with character code 1. */ |
| 325 | shortopts[0] = '-'; |
| 326 | is = 1; |
| 327 | il = 0; |
| 328 | for (i = 0; i < OPTION_COUNT; i++) |
| 329 | { |
| 330 | if (ld_options[i].shortopt != '\0') |
| 331 | { |
| 332 | shortopts[is] = ld_options[i].shortopt; |
| 333 | ++is; |
| 334 | if (ld_options[i].opt.has_arg == required_argument |
| 335 | || ld_options[i].opt.has_arg == optional_argument) |
| 336 | { |
| 337 | shortopts[is] = ':'; |
| 338 | ++is; |
| 339 | if (ld_options[i].opt.has_arg == optional_argument) |
| 340 | { |
| 341 | shortopts[is] = ':'; |
| 342 | ++is; |
| 343 | } |
| 344 | } |
| 345 | } |
| 346 | if (ld_options[i].opt.name != NULL) |
| 347 | { |
| 348 | longopts[il] = ld_options[i].opt; |
| 349 | ++il; |
| 350 | } |
| 351 | } |
| 352 | shortopts[is] = '\0'; |
| 353 | longopts[il].name = NULL; |
| 354 | |
| 355 | /* The -G option is ambiguous on different platforms. Sometimes it |
| 356 | specifies the largest data size to put into the small data |
| 357 | section. Sometimes it is equivalent to --shared. Unfortunately, |
| 358 | the first form takes an argument, while the second does not. |
| 359 | |
| 360 | We need to permit the --shared form because on some platforms, |
| 361 | such as Solaris, gcc -shared will pass -G to the linker. |
| 362 | |
| 363 | To permit either usage, we look through the argument list. If we |
| 364 | find -G not followed by a number, we change it into --shared. |
| 365 | This will work for most normal cases. */ |
| 366 | for (i = 1; i < argc; i++) |
| 367 | if (strcmp (argv[i], "-G") == 0 |
| 368 | && (i + 1 >= argc |
| 369 | || ! isdigit (argv[i + 1][0]))) |
| 370 | argv[i] = (char *) "--shared"; |
| 371 | |
| 372 | while (1) |
| 373 | { |
| 374 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can |
| 375 | indicate a long option. */ |
| 376 | int longind; |
| 377 | int optc; |
| 378 | |
| 379 | if (ldemul_parse_args (argc, argv)) |
| 380 | continue; |
| 381 | |
| 382 | optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); |
| 383 | |
| 384 | if (optc == -1) |
| 385 | break; |
| 386 | switch (optc) |
| 387 | { |
| 388 | default: |
| 389 | xexit (1); |
| 390 | case 1: /* File name. */ |
| 391 | lang_add_input_file (optarg, lang_input_file_is_file_enum, |
| 392 | (char *) NULL); |
| 393 | break; |
| 394 | |
| 395 | case OPTION_IGNORE: |
| 396 | break; |
| 397 | case 'a': |
| 398 | /* For HP/UX compatibility. Actually -a shared should mean |
| 399 | ``use only shared libraries'' but, then, we don't |
| 400 | currently support shared libraries on HP/UX anyhow. */ |
| 401 | if (strcmp (optarg, "archive") == 0) |
| 402 | config.dynamic_link = false; |
| 403 | else if (strcmp (optarg, "shared") == 0 |
| 404 | || strcmp (optarg, "default") == 0) |
| 405 | config.dynamic_link = true; |
| 406 | else |
| 407 | einfo ("%P%F: unrecognized -a option `%s'\n", optarg); |
| 408 | break; |
| 409 | case OPTION_ASSERT: |
| 410 | /* FIXME: We just ignore these, but we should handle them. */ |
| 411 | if (strcmp (optarg, "definitions") == 0) |
| 412 | ; |
| 413 | else if (strcmp (optarg, "nodefinitions") == 0) |
| 414 | ; |
| 415 | else if (strcmp (optarg, "nosymbolic") == 0) |
| 416 | ; |
| 417 | else if (strcmp (optarg, "pure-text") == 0) |
| 418 | ; |
| 419 | else |
| 420 | einfo ("%P%F: unrecognized -assert option `%s'\n", optarg); |
| 421 | break; |
| 422 | case 'A': |
| 423 | ldfile_add_arch (optarg); |
| 424 | break; |
| 425 | case 'b': |
| 426 | lang_add_target (optarg); |
| 427 | break; |
| 428 | case 'c': |
| 429 | ldfile_open_command_file (optarg); |
| 430 | parser_input = input_mri_script; |
| 431 | yyparse (); |
| 432 | break; |
| 433 | case OPTION_CALL_SHARED: |
| 434 | config.dynamic_link = true; |
| 435 | break; |
| 436 | case OPTION_NON_SHARED: |
| 437 | config.dynamic_link = false; |
| 438 | break; |
| 439 | case OPTION_CREF: |
| 440 | command_line.cref = true; |
| 441 | link_info.notice_all = true; |
| 442 | break; |
| 443 | case 'd': |
| 444 | command_line.force_common_definition = true; |
| 445 | break; |
| 446 | case OPTION_DEFSYM: |
| 447 | lex_string = optarg; |
| 448 | lex_redirect (optarg); |
| 449 | parser_input = input_defsym; |
| 450 | parsing_defsym = 1; |
| 451 | yyparse (); |
| 452 | parsing_defsym = 0; |
| 453 | lex_string = NULL; |
| 454 | break; |
| 455 | case OPTION_DYNAMIC_LINKER: |
| 456 | command_line.interpreter = optarg; |
| 457 | break; |
| 458 | case OPTION_EB: |
| 459 | command_line.endian = ENDIAN_BIG; |
| 460 | break; |
| 461 | case OPTION_EL: |
| 462 | command_line.endian = ENDIAN_LITTLE; |
| 463 | break; |
| 464 | case OPTION_EMBEDDED_RELOCS: |
| 465 | command_line.embedded_relocs = true; |
| 466 | break; |
| 467 | case OPTION_EXPORT_DYNAMIC: |
| 468 | case 'E': /* HP/UX compatibility. */ |
| 469 | command_line.export_dynamic = true; |
| 470 | break; |
| 471 | case 'e': |
| 472 | lang_add_entry (optarg, true); |
| 473 | break; |
| 474 | case 'F': |
| 475 | /* Ignore. */ |
| 476 | break; |
| 477 | case OPTION_FORCE_EXE_SUFFIX: |
| 478 | command_line.force_exe_suffix = true; |
| 479 | break; |
| 480 | case 'G': |
| 481 | { |
| 482 | char *end; |
| 483 | g_switch_value = strtoul (optarg, &end, 0); |
| 484 | if (*end) |
| 485 | einfo ("%P%F: invalid number `%s'\n", optarg); |
| 486 | } |
| 487 | break; |
| 488 | case 'g': |
| 489 | /* Ignore. */ |
| 490 | break; |
| 491 | case OPTION_HELP: |
| 492 | help (); |
| 493 | xexit (0); |
| 494 | break; |
| 495 | case 'L': |
| 496 | ldfile_add_library_path (optarg, true); |
| 497 | break; |
| 498 | case 'l': |
| 499 | lang_add_input_file (optarg, lang_input_file_is_l_enum, |
| 500 | (char *) NULL); |
| 501 | break; |
| 502 | case 'M': |
| 503 | config.map_filename = "-"; |
| 504 | break; |
| 505 | case 'm': |
| 506 | /* Ignore. Was handled in a pre-parse. */ |
| 507 | break; |
| 508 | case OPTION_MAP: |
| 509 | config.map_filename = optarg; |
| 510 | break; |
| 511 | case 'N': |
| 512 | config.text_read_only = false; |
| 513 | config.magic_demand_paged = false; |
| 514 | config.dynamic_link = false; |
| 515 | break; |
| 516 | case 'n': |
| 517 | config.magic_demand_paged = false; |
| 518 | config.dynamic_link = false; |
| 519 | break; |
| 520 | case OPTION_NO_KEEP_MEMORY: |
| 521 | link_info.keep_memory = false; |
| 522 | break; |
| 523 | case OPTION_NOINHIBIT_EXEC: |
| 524 | force_make_executable = true; |
| 525 | break; |
| 526 | case OPTION_NO_WHOLE_ARCHIVE: |
| 527 | whole_archive = false; |
| 528 | break; |
| 529 | case 'O': |
| 530 | /* FIXME "-O<non-digits> <value>" used to set the address of |
| 531 | section <non-digits>. Was this for compatibility with |
| 532 | something, or can we create a new option to do that |
| 533 | (with a syntax similar to -defsym)? |
| 534 | getopt can't handle two args to an option without kludges. */ |
| 535 | break; |
| 536 | case 'o': |
| 537 | lang_add_output (optarg, 0); |
| 538 | break; |
| 539 | case OPTION_OFORMAT: |
| 540 | lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0); |
| 541 | break; |
| 542 | case 'i': |
| 543 | case 'r': |
| 544 | link_info.relocateable = true; |
| 545 | config.build_constructors = false; |
| 546 | config.magic_demand_paged = false; |
| 547 | config.text_read_only = false; |
| 548 | config.dynamic_link = false; |
| 549 | break; |
| 550 | case 'R': |
| 551 | /* The GNU linker traditionally uses -R to mean to include |
| 552 | only the symbols from a file. The Solaris linker uses -R |
| 553 | to set the path used by the runtime linker to find |
| 554 | libraries. This is the GNU linker -rpath argument. We |
| 555 | try to support both simultaneously by checking the file |
| 556 | named. If it is a directory, rather than a regular file, |
| 557 | we assume -rpath was meant. */ |
| 558 | { |
| 559 | struct stat s; |
| 560 | |
| 561 | if (stat (optarg, &s) >= 0 |
| 562 | && ! S_ISDIR (s.st_mode)) |
| 563 | { |
| 564 | lang_add_input_file (optarg, |
| 565 | lang_input_file_is_symbols_only_enum, |
| 566 | (char *) NULL); |
| 567 | break; |
| 568 | } |
| 569 | } |
| 570 | /* Fall through. */ |
| 571 | case OPTION_RPATH: |
| 572 | if (command_line.rpath == NULL) |
| 573 | command_line.rpath = buystring (optarg); |
| 574 | else |
| 575 | { |
| 576 | char *buf; |
| 577 | |
| 578 | buf = xmalloc (strlen (command_line.rpath) |
| 579 | + strlen (optarg) |
| 580 | + 2); |
| 581 | sprintf (buf, "%s:%s", command_line.rpath, optarg); |
| 582 | free (command_line.rpath); |
| 583 | command_line.rpath = buf; |
| 584 | } |
| 585 | break; |
| 586 | case OPTION_RPATH_LINK: |
| 587 | if (command_line.rpath_link == NULL) |
| 588 | command_line.rpath_link = buystring (optarg); |
| 589 | else |
| 590 | { |
| 591 | char *buf; |
| 592 | |
| 593 | buf = xmalloc (strlen (command_line.rpath_link) |
| 594 | + strlen (optarg) |
| 595 | + 2); |
| 596 | sprintf (buf, "%s:%s", command_line.rpath_link, optarg); |
| 597 | free (command_line.rpath_link); |
| 598 | command_line.rpath_link = buf; |
| 599 | } |
| 600 | break; |
| 601 | case OPTION_RELAX: |
| 602 | command_line.relax = true; |
| 603 | break; |
| 604 | case OPTION_RETAIN_SYMBOLS_FILE: |
| 605 | add_keepsyms_file (optarg); |
| 606 | break; |
| 607 | case 'S': |
| 608 | link_info.strip = strip_debugger; |
| 609 | break; |
| 610 | case 's': |
| 611 | link_info.strip = strip_all; |
| 612 | break; |
| 613 | case OPTION_SHARED: |
| 614 | link_info.shared = true; |
| 615 | break; |
| 616 | case 'h': /* Used on Solaris. */ |
| 617 | case OPTION_SONAME: |
| 618 | command_line.soname = optarg; |
| 619 | break; |
| 620 | case OPTION_SORT_COMMON: |
| 621 | config.sort_common = true; |
| 622 | break; |
| 623 | case OPTION_STATS: |
| 624 | config.stats = true; |
| 625 | break; |
| 626 | case OPTION_SYMBOLIC: |
| 627 | link_info.symbolic = true; |
| 628 | break; |
| 629 | case 't': |
| 630 | trace_files = true; |
| 631 | break; |
| 632 | case 'T': |
| 633 | ldfile_open_command_file (optarg); |
| 634 | parser_input = input_script; |
| 635 | yyparse (); |
| 636 | break; |
| 637 | case OPTION_TBSS: |
| 638 | set_section_start (".bss", optarg); |
| 639 | break; |
| 640 | case OPTION_TDATA: |
| 641 | set_section_start (".data", optarg); |
| 642 | break; |
| 643 | case OPTION_TTEXT: |
| 644 | set_section_start (".text", optarg); |
| 645 | break; |
| 646 | case OPTION_TRADITIONAL_FORMAT: |
| 647 | link_info.traditional_format = true; |
| 648 | break; |
| 649 | case OPTION_UR: |
| 650 | link_info.relocateable = true; |
| 651 | config.build_constructors = true; |
| 652 | config.magic_demand_paged = false; |
| 653 | config.text_read_only = false; |
| 654 | config.dynamic_link = false; |
| 655 | break; |
| 656 | case 'u': |
| 657 | ldlang_add_undef (optarg); |
| 658 | break; |
| 659 | case OPTION_VERBOSE: |
| 660 | ldversion (1); |
| 661 | version_printed = true; |
| 662 | trace_file_tries = true; |
| 663 | break; |
| 664 | case 'v': |
| 665 | ldversion (0); |
| 666 | version_printed = true; |
| 667 | break; |
| 668 | case 'V': |
| 669 | ldversion (1); |
| 670 | version_printed = true; |
| 671 | break; |
| 672 | case OPTION_VERSION: |
| 673 | /* This output is intended to follow the GNU standards document. */ |
| 674 | printf ("GNU ld %s\n", ld_program_version); |
| 675 | printf ("Copyright 1996 Free Software Foundation, Inc.\n"); |
| 676 | printf ("\ |
| 677 | This program is free software; you may redistribute it under the terms of\n\ |
| 678 | the GNU General Public License. This program has absolutely no warranty.\n"); |
| 679 | { |
| 680 | ld_emulation_xfer_type **ptr = ld_emulations; |
| 681 | |
| 682 | printf (" Supported emulations:\n"); |
| 683 | while (*ptr) |
| 684 | { |
| 685 | printf (" %s\n", (*ptr)->emulation_name); |
| 686 | ptr++; |
| 687 | } |
| 688 | } |
| 689 | xexit (0); |
| 690 | break; |
| 691 | case OPTION_WARN_COMMON: |
| 692 | config.warn_common = true; |
| 693 | break; |
| 694 | case OPTION_WARN_CONSTRUCTORS: |
| 695 | config.warn_constructors = true; |
| 696 | break; |
| 697 | case OPTION_WARN_MULTIPLE_GP: |
| 698 | config.warn_multiple_gp = true; |
| 699 | break; |
| 700 | case OPTION_WARN_ONCE: |
| 701 | config.warn_once = true; |
| 702 | break; |
| 703 | case OPTION_WHOLE_ARCHIVE: |
| 704 | whole_archive = true; |
| 705 | break; |
| 706 | case OPTION_WRAP: |
| 707 | add_wrap (optarg); |
| 708 | break; |
| 709 | case 'X': |
| 710 | link_info.discard = discard_l; |
| 711 | break; |
| 712 | case 'x': |
| 713 | link_info.discard = discard_all; |
| 714 | break; |
| 715 | case 'Y': |
| 716 | if (strncmp (optarg, "P,", 2) == 0) |
| 717 | optarg += 2; |
| 718 | default_dirlist = xstrdup (optarg); |
| 719 | break; |
| 720 | case 'y': |
| 721 | add_ysym (optarg); |
| 722 | break; |
| 723 | case 'z': |
| 724 | /* We accept and ignore this option for Solaris |
| 725 | compatibility. Actually, on Solaris, optarg is not |
| 726 | ignored. Someday we should handle it correctly. FIXME. */ |
| 727 | break; |
| 728 | case OPTION_SPLIT_BY_RELOC: |
| 729 | config.split_by_reloc = atoi (optarg); |
| 730 | break; |
| 731 | case OPTION_SPLIT_BY_FILE: |
| 732 | config.split_by_file = true; |
| 733 | break; |
| 734 | case '(': |
| 735 | if (ingroup) |
| 736 | { |
| 737 | fprintf (stderr, |
| 738 | "%s: may not nest groups (--help for usage)\n", |
| 739 | program_name); |
| 740 | xexit (1); |
| 741 | } |
| 742 | lang_enter_group (); |
| 743 | ingroup = 1; |
| 744 | break; |
| 745 | case ')': |
| 746 | if (! ingroup) |
| 747 | { |
| 748 | fprintf (stderr, |
| 749 | "%s: group ended before it began (--help for usage)\n", |
| 750 | program_name); |
| 751 | xexit (1); |
| 752 | } |
| 753 | lang_leave_group (); |
| 754 | ingroup = 0; |
| 755 | break; |
| 756 | |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | if (ingroup) |
| 761 | lang_leave_group (); |
| 762 | |
| 763 | if (default_dirlist != NULL) |
| 764 | set_default_dirlist (default_dirlist); |
| 765 | |
| 766 | } |
| 767 | |
| 768 | /* Add the (colon-separated) elements of DIRLIST_PTR to the |
| 769 | library search path. */ |
| 770 | |
| 771 | static void |
| 772 | set_default_dirlist (dirlist_ptr) |
| 773 | char *dirlist_ptr; |
| 774 | { |
| 775 | char *p; |
| 776 | |
| 777 | while (1) |
| 778 | { |
| 779 | p = strchr (dirlist_ptr, ':'); |
| 780 | if (p != NULL) |
| 781 | *p = '\0'; |
| 782 | if (*dirlist_ptr != '\0') |
| 783 | ldfile_add_library_path (dirlist_ptr, true); |
| 784 | if (p == NULL) |
| 785 | break; |
| 786 | dirlist_ptr = p + 1; |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | static void |
| 791 | set_section_start (sect, valstr) |
| 792 | char *sect, *valstr; |
| 793 | { |
| 794 | char *end; |
| 795 | unsigned long val = strtoul (valstr, &end, 16); |
| 796 | if (*end) |
| 797 | einfo ("%P%F: invalid hex number `%s'\n", valstr); |
| 798 | lang_section_start (sect, exp_intop (val)); |
| 799 | } |
| 800 | \f |
| 801 | /* Print help messages for the options. */ |
| 802 | |
| 803 | static void |
| 804 | help () |
| 805 | { |
| 806 | int i; |
| 807 | const char **targets, **pp; |
| 808 | |
| 809 | printf ("Usage: %s [options] file...\n", program_name); |
| 810 | |
| 811 | printf ("Options:\n"); |
| 812 | for (i = 0; i < OPTION_COUNT; i++) |
| 813 | { |
| 814 | if (ld_options[i].doc != NULL) |
| 815 | { |
| 816 | boolean comma; |
| 817 | int len; |
| 818 | int j; |
| 819 | |
| 820 | printf (" "); |
| 821 | |
| 822 | comma = false; |
| 823 | len = 2; |
| 824 | |
| 825 | j = i; |
| 826 | do |
| 827 | { |
| 828 | if (ld_options[j].shortopt != '\0' |
| 829 | && ld_options[j].control != NO_HELP) |
| 830 | { |
| 831 | printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); |
| 832 | len += (comma ? 2 : 0) + 2; |
| 833 | if (ld_options[j].arg != NULL) |
| 834 | { |
| 835 | if (ld_options[j].opt.has_arg != optional_argument) |
| 836 | { |
| 837 | printf (" "); |
| 838 | ++len; |
| 839 | } |
| 840 | printf ("%s", ld_options[j].arg); |
| 841 | len += strlen (ld_options[j].arg); |
| 842 | } |
| 843 | comma = true; |
| 844 | } |
| 845 | ++j; |
| 846 | } |
| 847 | while (j < OPTION_COUNT && ld_options[j].doc == NULL); |
| 848 | |
| 849 | j = i; |
| 850 | do |
| 851 | { |
| 852 | if (ld_options[j].opt.name != NULL |
| 853 | && ld_options[j].control != NO_HELP) |
| 854 | { |
| 855 | printf ("%s-%s%s", |
| 856 | comma ? ", " : "", |
| 857 | ld_options[j].control == TWO_DASHES ? "-" : "", |
| 858 | ld_options[j].opt.name); |
| 859 | len += ((comma ? 2 : 0) |
| 860 | + 1 |
| 861 | + (ld_options[j].control == TWO_DASHES ? 1 : 0) |
| 862 | + strlen (ld_options[j].opt.name)); |
| 863 | if (ld_options[j].arg != NULL) |
| 864 | { |
| 865 | printf (" %s", ld_options[j].arg); |
| 866 | len += 1 + strlen (ld_options[j].arg); |
| 867 | } |
| 868 | comma = true; |
| 869 | } |
| 870 | ++j; |
| 871 | } |
| 872 | while (j < OPTION_COUNT && ld_options[j].doc == NULL); |
| 873 | |
| 874 | if (len >= 30) |
| 875 | { |
| 876 | printf ("\n"); |
| 877 | len = 0; |
| 878 | } |
| 879 | |
| 880 | for (; len < 30; len++) |
| 881 | putchar (' '); |
| 882 | |
| 883 | printf ("%s\n", ld_options[i].doc); |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | printf ("%s: supported targets:", program_name); |
| 888 | targets = bfd_target_list (); |
| 889 | for (pp = targets; *pp != NULL; pp++) |
| 890 | printf (" %s", *pp); |
| 891 | free (targets); |
| 892 | printf ("\n"); |
| 893 | |
| 894 | printf ("%s: supported emulations: ", program_name); |
| 895 | ldemul_list_emulations (stdout); |
| 896 | printf ("\n"); |
| 897 | printf ("\nReport bugs to bug-gnu-utils@prep.ai.mit.edu\n"); |
| 898 | } |