ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GLD, the Gnu Linker.
   6
   7 GLD is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GLD is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GLD; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "libiberty.h"
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <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
  42 #ifndef PATH_SEPARATOR
  43 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  44 #define PATH_SEPARATOR ';'
  45 #else
  46 #define PATH_SEPARATOR ':'
  47 #endif
  48 #endif
  49
  50 /* Somewhere above, sys/stat.h got included . . . .  */
  51 #if !defined(S_ISDIR) && defined(S_IFDIR)
  52 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  53 #endif
  54
  55 /* Omit args to avoid the possibility of clashing with a system header
  56    that might disagree about consts.  */
  57 unsigned long strtoul ();
  58
  59 static int is_num PARAMS ((const char *, int, int, int));
  60 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
  61 static void set_section_start PARAMS ((char *sect, char *valstr));
  62 static void help PARAMS ((void));
  63
  64 /* Non-zero if we are processing a --defsym from the command line.  */
  65 int parsing_defsym = 0;
  66
  67 /* Codes used for the long options with no short synonyms.  150 isn't
  68    special; it's just an arbitrary non-ASCII char value.  */
  69
  70 #define OPTION_ASSERT                   150
  71 #define OPTION_CALL_SHARED              (OPTION_ASSERT + 1)
  72 #define OPTION_CREF                     (OPTION_CALL_SHARED + 1)
  73 #define OPTION_DEFSYM                   (OPTION_CREF + 1)
  74 #define OPTION_DEMANGLE                 (OPTION_DEFSYM + 1)
  75 #define OPTION_DYNAMIC_LINKER           (OPTION_DEMANGLE + 1)
  76 #define OPTION_EB                       (OPTION_DYNAMIC_LINKER + 1)
  77 #define OPTION_EL                       (OPTION_EB + 1)
  78 #define OPTION_EMBEDDED_RELOCS          (OPTION_EL + 1)
  79 #define OPTION_EXPORT_DYNAMIC           (OPTION_EMBEDDED_RELOCS + 1)
  80 #define OPTION_HELP                     (OPTION_EXPORT_DYNAMIC + 1)
  81 #define OPTION_IGNORE                   (OPTION_HELP + 1)
  82 #define OPTION_MAP                      (OPTION_IGNORE + 1)
  83 #define OPTION_NO_DEMANGLE              (OPTION_MAP + 1)
  84 #define OPTION_NO_KEEP_MEMORY           (OPTION_NO_DEMANGLE + 1)
  85 #define OPTION_NO_WARN_MISMATCH         (OPTION_NO_KEEP_MEMORY + 1)
  86 #define OPTION_NOINHIBIT_EXEC           (OPTION_NO_WARN_MISMATCH + 1)
  87 #define OPTION_NON_SHARED               (OPTION_NOINHIBIT_EXEC + 1)
  88 #define OPTION_NO_WHOLE_ARCHIVE         (OPTION_NON_SHARED + 1)
  89 #define OPTION_OFORMAT                  (OPTION_NO_WHOLE_ARCHIVE + 1)
  90 #define OPTION_RELAX                    (OPTION_OFORMAT + 1)
  91 #define OPTION_RETAIN_SYMBOLS_FILE      (OPTION_RELAX + 1)
  92 #define OPTION_RPATH                    (OPTION_RETAIN_SYMBOLS_FILE + 1)
  93 #define OPTION_RPATH_LINK               (OPTION_RPATH + 1)
  94 #define OPTION_SHARED                   (OPTION_RPATH_LINK + 1)
  95 #define OPTION_SONAME                   (OPTION_SHARED + 1)
  96 #define OPTION_SORT_COMMON              (OPTION_SONAME + 1)
  97 #define OPTION_STATS                    (OPTION_SORT_COMMON + 1)
  98 #define OPTION_SYMBOLIC                 (OPTION_STATS + 1)
  99 #define OPTION_TASK_LINK                (OPTION_SYMBOLIC + 1)
 100 #define OPTION_TBSS                     (OPTION_TASK_LINK + 1)
 101 #define OPTION_TDATA                    (OPTION_TBSS + 1)
 102 #define OPTION_TTEXT                    (OPTION_TDATA + 1)
 103 #define OPTION_TRADITIONAL_FORMAT       (OPTION_TTEXT + 1)
 104 #define OPTION_UR                       (OPTION_TRADITIONAL_FORMAT + 1)
 105 #define OPTION_VERBOSE                  (OPTION_UR + 1)
 106 #define OPTION_VERSION                  (OPTION_VERBOSE + 1)
 107 #define OPTION_VERSION_SCRIPT           (OPTION_VERSION + 1)
 108 #define OPTION_VERSION_EXPORTS_SECTION  (OPTION_VERSION_SCRIPT + 1)
 109 #define OPTION_WARN_COMMON              (OPTION_VERSION_EXPORTS_SECTION + 1)
 110 #define OPTION_WARN_CONSTRUCTORS        (OPTION_WARN_COMMON + 1)
 111 #define OPTION_WARN_MULTIPLE_GP         (OPTION_WARN_CONSTRUCTORS + 1)
 112 #define OPTION_WARN_ONCE                (OPTION_WARN_MULTIPLE_GP + 1)
 113 #define OPTION_WARN_SECTION_ALIGN       (OPTION_WARN_ONCE + 1)
 114 #define OPTION_SPLIT_BY_RELOC           (OPTION_WARN_SECTION_ALIGN + 1)
 115 #define OPTION_SPLIT_BY_FILE            (OPTION_SPLIT_BY_RELOC + 1)
 116 #define OPTION_WHOLE_ARCHIVE            (OPTION_SPLIT_BY_FILE + 1)
 117 #define OPTION_WRAP                     (OPTION_WHOLE_ARCHIVE + 1)
 118 #define OPTION_FORCE_EXE_SUFFIX         (OPTION_WRAP + 1)
 119 #define OPTION_GC_SECTIONS              (OPTION_FORCE_EXE_SUFFIX + 1)
 120 #define OPTION_NO_GC_SECTIONS           (OPTION_GC_SECTIONS + 1)
 121 #define OPTION_CHECK_SECTIONS           (OPTION_NO_GC_SECTIONS + 1)
 122 #define OPTION_NO_CHECK_SECTIONS        (OPTION_CHECK_SECTIONS + 1)
 123 #define OPTION_MPC860C0                 (OPTION_NO_CHECK_SECTIONS + 1)
 124 #define OPTION_NO_UNDEFINED             (OPTION_MPC860C0 + 1)
 125 #define OPTION_INIT                     (OPTION_NO_UNDEFINED + 1)
 126 #define OPTION_FINI                     (OPTION_INIT + 1)
 127 #define OPTION_SECTION_START            (OPTION_FINI + 1)
 128 #define OPTION_UNIQUE                   (OPTION_SECTION_START + 1)
 129 #define OPTION_TARGET_HELP              (OPTION_UNIQUE + 1)
 130
 131 /* The long options.  This structure is used for both the option
 132    parsing and the help text.  */
 133
 134 struct ld_option {
 135   /* The long option information.  */
 136   struct option opt;
 137   /* The short option with the same meaning ('\0' if none).  */
 138   char shortopt;
 139   /* The name of the argument (NULL if none).  */
 140   const char *arg;
 141   /* The documentation string.  If this is NULL, this is a synonym for
 142      the previous option.  */
 143   const char *doc;
 144   enum {
 145     /* Use one dash before long option name.  */
 146     ONE_DASH,
 147     /* Use two dashes before long option name.  */
 148     TWO_DASHES,
 149     /* Don't mention this option in --help output.  */
 150     NO_HELP
 151   } control;
 152 };
 153
 154 static const struct ld_option ld_options[] = {
 155   { {NULL, required_argument, NULL, '\0'},
 156       'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 157       ONE_DASH },
 158   { {"architecture", required_argument, NULL, 'A'},
 159       'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 160   { {"format", required_argument, NULL, 'b'},
 161       'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
 162   { {"mri-script", required_argument, NULL, 'c'},
 163       'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 164   { {"dc", no_argument, NULL, 'd'},
 165       'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 166   { {"dp", no_argument, NULL, 'd'},
 167       '\0', NULL, NULL, ONE_DASH },
 168   { {"entry", required_argument, NULL, 'e'},
 169       'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 170   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 171       'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 172   { {"EB", no_argument, NULL, OPTION_EB},
 173       '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 174   { {"EL", no_argument, NULL, OPTION_EL},
 175       '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 176   { {"auxiliary", required_argument, NULL, 'f'},
 177       'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 178       TWO_DASHES },
 179   { {"filter", required_argument, NULL, 'F'},
 180       'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
 181   { {NULL, no_argument, NULL, '\0'},
 182       'g', NULL, N_("Ignored"), ONE_DASH },
 183   { {"gpsize", required_argument, NULL, 'G'},
 184       'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 185       TWO_DASHES },
 186   { {"soname", required_argument, NULL, OPTION_SONAME},
 187       'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 188   { {"library", required_argument, NULL, 'l'},
 189       'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 190   { {"library-path", required_argument, NULL, 'L'},
 191       'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
 192   { {NULL, required_argument, NULL, '\0'},
 193       'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 194   { {"print-map", no_argument, NULL, 'M'},
 195       'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 196   { {"nmagic", no_argument, NULL, 'n'},
 197       'n', NULL, N_("Do not page align data"), TWO_DASHES },
 198   { {"omagic", no_argument, NULL, 'N'},
 199       'N', NULL, N_("Do not page align data, do not make text readonly"),
 200       TWO_DASHES },
 201   { {"output", required_argument, NULL, 'o'},
 202       'o', N_("FILE"), N_("Set output file name"), TWO_DASHES },
 203   { {NULL, required_argument, NULL, '\0'},
 204       'O', NULL, N_("Optimize output file"), ONE_DASH },
 205   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 206       '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 207   { {"emit-relocs", no_argument, NULL, 'q'},
 208       'q', NULL, "Generate relocations in final output", TWO_DASHES },
 209   { {"relocateable", no_argument, NULL, 'r'},
 210       'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
 211   { {NULL, no_argument, NULL, '\0'},
 212       'i', NULL, NULL, ONE_DASH },
 213   { {"just-symbols", required_argument, NULL, 'R'},
 214       'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 215       TWO_DASHES },
 216   { {"strip-all", no_argument, NULL, 's'},
 217       's', NULL, N_("Strip all symbols"), TWO_DASHES },
 218   { {"strip-debug", no_argument, NULL, 'S'},
 219       'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 220   { {"trace", no_argument, NULL, 't'},
 221       't', NULL, N_("Trace file opens"), TWO_DASHES },
 222   { {"script", required_argument, NULL, 'T'},
 223       'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 224   { {"undefined", required_argument, NULL, 'u'},
 225       'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
 226   { {"unique", no_argument, NULL, OPTION_UNIQUE},
 227       '\0', NULL, N_("Don't merge orphan sections with the same name"), TWO_DASHES },
 228   { {"Ur", no_argument, NULL, OPTION_UR},
 229       '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 230   { {"version", no_argument, NULL, OPTION_VERSION},
 231       'v', NULL, N_("Print version information"), TWO_DASHES },
 232   { {NULL, no_argument, NULL, '\0'},
 233       'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 234   { {"discard-all", no_argument, NULL, 'x'},
 235       'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 236   { {"discard-locals", no_argument, NULL, 'X'},
 237       'X', NULL, N_("Discard temporary local symbols"), TWO_DASHES },
 238   { {"trace-symbol", required_argument, NULL, 'y'},
 239       'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 240   { {NULL, required_argument, NULL, '\0'},
 241       'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
 242   { {"start-group", no_argument, NULL, '('},
 243       '(', NULL, N_("Start a group"), TWO_DASHES },
 244   { {"end-group", no_argument, NULL, ')'},
 245       ')', NULL, N_("End a group"), TWO_DASHES },
 246   { {"assert", required_argument, NULL, OPTION_ASSERT},
 247       '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 248   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 249       '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 250   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 251       '\0', NULL, NULL, ONE_DASH },
 252   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 253       '\0', NULL, NULL, ONE_DASH },
 254   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 255       '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 256   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 257       '\0', NULL, NULL, ONE_DASH },
 258   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 259       '\0', NULL, NULL, ONE_DASH },
 260   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 261       '\0', NULL, NULL, ONE_DASH },
 262   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 263       '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 264   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 265       '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
 266   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 267       '\0', NULL, N_("Do not check section addresses for overlaps"),
 268       TWO_DASHES },
 269   { {"cref", no_argument, NULL, OPTION_CREF},
 270       '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 271   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 272       '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 273   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 274       '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
 275   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 276       '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
 277   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 278       '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 279   { {"fini", required_argument, NULL, OPTION_FINI},
 280      '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 281   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 282       '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 283   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 284       '\0', NULL, N_("Remove unused sections (on some targets)"),
 285       TWO_DASHES },
 286   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 287       '\0', NULL, N_("Don't remove unused sections (default)"),
 288       TWO_DASHES },
 289   { {"help", no_argument, NULL, OPTION_HELP},
 290       '\0', NULL, N_("Print option help"), TWO_DASHES },
 291   { {"init", required_argument, NULL, OPTION_INIT},
 292      '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 293   { {"Map", required_argument, NULL, OPTION_MAP},
 294       '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 295   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 296       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 297   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 298       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 299   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 300      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 301   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 302       '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 303   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 304       '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 305   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 306       '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
 307   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 308       '\0', NULL, NULL, NO_HELP },
 309   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 310       '\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES },
 311   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 312       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 313   { {"relax", no_argument, NULL, OPTION_RELAX},
 314       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 315   { {"retain-symbols-file", required_argument, NULL,
 316        OPTION_RETAIN_SYMBOLS_FILE},
 317       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 318   { {"rpath", required_argument, NULL, OPTION_RPATH},
 319       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 320   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 321       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 322   { {"shared", no_argument, NULL, OPTION_SHARED},
 323       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 324   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 325       '\0', NULL, NULL, ONE_DASH },
 326   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 327       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 328   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 329       '\0', NULL, NULL, NO_HELP },
 330   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 331       '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
 332   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 333       '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 334   { {"stats", no_argument, NULL, OPTION_STATS},
 335       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 336   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 337       '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 338   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 339       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 340   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 341       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 342   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 343       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 344   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 345       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 346   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 347       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 348   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 349       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 350   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 351       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 352   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 353       '\0', NULL, NULL, NO_HELP },
 354   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 355       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 356   { {"version-exports-section", required_argument, NULL,
 357      OPTION_VERSION_EXPORTS_SECTION },
 358     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 359     TWO_DASHES },
 360   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 361       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 362   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 363       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 364       TWO_DASHES },
 365   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 366       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 367   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 368       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 369   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 370       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 371       TWO_DASHES },
 372   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 373       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 374   { {"wrap", required_argument, NULL, OPTION_WRAP},
 375       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 376   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 377       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 378 };
 379
 380 #define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
 381
 382 /* Test STRING for containing a string of digits that form a number
 383    between MIN and MAX.  The return value is the number or ERR.  */
 384
 385 static int
 386 is_num (string, min, max, err)
 387      const char *string;
 388      int min;
 389      int max;
 390      int err;
 391 {
 392   int result = 0;
 393
 394   for (; *string; ++string)
 395     {
 396       if (! isdigit (*string))
 397         {
 398           result = err;
 399           break;
 400         }
 401       result = result * 10 + (*string - '0');
 402     }
 403   if (result < min || result > max)
 404     result = err;
 405
 406   return result;
 407 }
 408
 409 void
 410 parse_args (argc, argv)
 411      int argc;
 412      char **argv;
 413 {
 414   int i, is, il;
 415   int ingroup = 0;
 416   char *default_dirlist = NULL;
 417   char shortopts[OPTION_COUNT * 3 + 2];
 418   struct option longopts[OPTION_COUNT + 1];
 419   int last_optind;
 420
 421   /* Starting the short option string with '-' is for programs that
 422      expect options and other ARGV-elements in any order and that care about
 423      the ordering of the two.  We describe each non-option ARGV-element
 424      as if it were the argument of an option with character code 1.  */
 425   shortopts[0] = '-';
 426   is = 1;
 427   il = 0;
 428   for (i = 0; i < OPTION_COUNT; i++)
 429     {
 430       if (ld_options[i].shortopt != '\0')
 431         {
 432           shortopts[is] = ld_options[i].shortopt;
 433           ++is;
 434           if (ld_options[i].opt.has_arg == required_argument
 435               || ld_options[i].opt.has_arg == optional_argument)
 436             {
 437               shortopts[is] = ':';
 438               ++is;
 439               if (ld_options[i].opt.has_arg == optional_argument)
 440                 {
 441                   shortopts[is] = ':';
 442                   ++is;
 443                 }
 444             }
 445         }
 446       if (ld_options[i].opt.name != NULL)
 447         {
 448           longopts[il] = ld_options[i].opt;
 449           ++il;
 450         }
 451     }
 452   shortopts[is] = '\0';
 453   longopts[il].name = NULL;
 454
 455   /* The -G option is ambiguous on different platforms.  Sometimes it
 456      specifies the largest data size to put into the small data
 457      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 458      the first form takes an argument, while the second does not.
 459
 460      We need to permit the --shared form because on some platforms,
 461      such as Solaris, gcc -shared will pass -G to the linker.
 462
 463      To permit either usage, we look through the argument list.  If we
 464      find -G not followed by a number, we change it into --shared.
 465      This will work for most normal cases.  */
 466   for (i = 1; i < argc; i++)
 467     if (strcmp (argv[i], "-G") == 0
 468         && (i + 1 >= argc
 469             || ! isdigit ((unsigned char) argv[i + 1][0])))
 470       argv[i] = (char *) "--shared";
 471
 472   /* Because we permit long options to start with a single dash, and
 473      we have a --library option, and the -l option is conventionally
 474      used with an immediately following argument, we can have bad
 475      results if somebody tries to use -l with a library whose name
 476      happens to start with "ibrary", as in -li.  We avoid problems by
 477      simply turning -l into --library.  This means that users will
 478      have to use two dashes in order to use --library, which is OK
 479      since that's how it is documented.
 480
 481      FIXME: It's possible that this problem can arise for other short
 482      options as well, although the user does always have the recourse
 483      of adding a space between the option and the argument.  */
 484   for (i = 1; i < argc; i++)
 485     {
 486       if (argv[i][0] == '-'
 487           && argv[i][1] == 'l'
 488           && argv[i][2] != '\0')
 489         {
 490           char *n;
 491
 492           n = (char *) xmalloc (strlen (argv[i]) + 20);
 493           sprintf (n, "--library=%s", argv[i] + 2);
 494           argv[i] = n;
 495         }
 496     }
 497
 498   last_optind = -1;
 499   while (1)
 500     {
 501       int longind;
 502       int optc;
 503
 504       /* Using last_optind lets us avoid calling ldemul_parse_args
 505          multiple times on a single option, which would lead to
 506          confusion in the internal static variables maintained by
 507          getopt.  This could otherwise happen for an argument like
 508          -nx, in which the -n is parsed as a single option, and we
 509          loop around to pick up the -x.  */
 510       if (optind != last_optind)
 511         {
 512           if (ldemul_parse_args (argc, argv))
 513             continue;
 514           last_optind = optind;
 515         }
 516
 517       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 518          can indicate a long option.  */
 519       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 520
 521       if (optc == -1)
 522         break;
 523       switch (optc)
 524         {
 525         default:
 526           fprintf (stderr,
 527                    _("%s: use the --help option for usage information\n"),
 528                    program_name);
 529           xexit (1);
 530         case 1:                 /* File name.  */
 531           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 532                                (char *) NULL);
 533           break;
 534
 535         case OPTION_IGNORE:
 536           break;
 537         case 'a':
 538           /* For HP/UX compatibility.  Actually -a shared should mean
 539              ``use only shared libraries'' but, then, we don't
 540              currently support shared libraries on HP/UX anyhow.  */
 541           if (strcmp (optarg, "archive") == 0)
 542             config.dynamic_link = false;
 543           else if (strcmp (optarg, "shared") == 0
 544                    || strcmp (optarg, "default") == 0)
 545             config.dynamic_link = true;
 546           else
 547             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 548           break;
 549         case OPTION_ASSERT:
 550           /* FIXME: We just ignore these, but we should handle them.  */
 551           if (strcmp (optarg, "definitions") == 0)
 552             ;
 553           else if (strcmp (optarg, "nodefinitions") == 0)
 554             ;
 555           else if (strcmp (optarg, "nosymbolic") == 0)
 556             ;
 557           else if (strcmp (optarg, "pure-text") == 0)
 558             ;
 559           else
 560             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 561           break;
 562         case 'A':
 563           ldfile_add_arch (optarg);
 564           break;
 565         case 'b':
 566           lang_add_target (optarg);
 567           break;
 568         case 'c':
 569           ldfile_open_command_file (optarg);
 570           parser_input = input_mri_script;
 571           yyparse ();
 572           break;
 573         case OPTION_CALL_SHARED:
 574           config.dynamic_link = true;
 575           break;
 576         case OPTION_NON_SHARED:
 577           config.dynamic_link = false;
 578           break;
 579         case OPTION_CREF:
 580           command_line.cref = true;
 581           link_info.notice_all = true;
 582           break;
 583         case 'd':
 584           command_line.force_common_definition = true;
 585           break;
 586         case OPTION_DEFSYM:
 587           lex_string = optarg;
 588           lex_redirect (optarg);
 589           parser_input = input_defsym;
 590           parsing_defsym = 1;
 591           yyparse ();
 592           parsing_defsym = 0;
 593           lex_string = NULL;
 594           break;
 595         case OPTION_DEMANGLE:
 596           demangling = true;
 597           if (optarg != NULL)
 598             {
 599               enum demangling_styles style;
 600
 601               style = cplus_demangle_name_to_style (optarg);
 602               if (style == unknown_demangling)
 603                 einfo (_("%F%P: unknown demangling style `%s'"),
 604                        optarg);
 605
 606               cplus_demangle_set_style (style);
 607             }
 608           break;
 609         case OPTION_DYNAMIC_LINKER:
 610           command_line.interpreter = optarg;
 611           break;
 612         case OPTION_EB:
 613           command_line.endian = ENDIAN_BIG;
 614           break;
 615         case OPTION_EL:
 616           command_line.endian = ENDIAN_LITTLE;
 617           break;
 618         case OPTION_EMBEDDED_RELOCS:
 619           command_line.embedded_relocs = true;
 620           break;
 621         case OPTION_EXPORT_DYNAMIC:
 622         case 'E': /* HP/UX compatibility.  */
 623           command_line.export_dynamic = true;
 624           break;
 625         case 'e':
 626           lang_add_entry (optarg, true);
 627           break;
 628         case 'f':
 629           if (command_line.auxiliary_filters == NULL)
 630             {
 631               command_line.auxiliary_filters =
 632                 (char **) xmalloc (2 * sizeof (char *));
 633               command_line.auxiliary_filters[0] = optarg;
 634               command_line.auxiliary_filters[1] = NULL;
 635             }
 636           else
 637             {
 638               int c;
 639               char **p;
 640
 641               c = 0;
 642               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 643                 ++c;
 644               command_line.auxiliary_filters =
 645                 (char **) xrealloc (command_line.auxiliary_filters,
 646                                     (c + 2) * sizeof (char *));
 647               command_line.auxiliary_filters[c] = optarg;
 648               command_line.auxiliary_filters[c + 1] = NULL;
 649             }
 650           break;
 651         case 'F':
 652           command_line.filter_shlib = optarg;
 653           break;
 654         case OPTION_FORCE_EXE_SUFFIX:
 655           command_line.force_exe_suffix = true;
 656           break;
 657         case 'G':
 658           {
 659             char *end;
 660             g_switch_value = strtoul (optarg, &end, 0);
 661             if (*end)
 662               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 663           }
 664           break;
 665         case 'g':
 666           /* Ignore.  */
 667           break;
 668         case OPTION_GC_SECTIONS:
 669           command_line.gc_sections = true;
 670           break;
 671         case OPTION_HELP:
 672           help ();
 673           xexit (0);
 674           break;
 675         case 'L':
 676           ldfile_add_library_path (optarg, true);
 677           break;
 678         case 'l':
 679           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 680                                (char *) NULL);
 681           break;
 682         case 'M':
 683           config.map_filename = "-";
 684           break;
 685         case 'm':
 686           /* Ignore.  Was handled in a pre-parse.   */
 687           break;
 688         case OPTION_MAP:
 689           config.map_filename = optarg;
 690           break;
 691         case 'N':
 692           config.text_read_only = false;
 693           config.magic_demand_paged = false;
 694           config.dynamic_link = false;
 695           break;
 696         case 'n':
 697           config.magic_demand_paged = false;
 698           config.dynamic_link = false;
 699           break;
 700         case OPTION_NO_DEMANGLE:
 701           demangling = false;
 702           break;
 703         case OPTION_NO_GC_SECTIONS:
 704           command_line.gc_sections = false;
 705           break;
 706         case OPTION_NO_KEEP_MEMORY:
 707           link_info.keep_memory = false;
 708           break;
 709         case OPTION_NO_UNDEFINED:
 710           link_info.no_undefined = true;
 711           break;
 712         case OPTION_NO_WARN_MISMATCH:
 713           command_line.warn_mismatch = false;
 714           break;
 715         case OPTION_NOINHIBIT_EXEC:
 716           force_make_executable = true;
 717           break;
 718         case OPTION_NO_WHOLE_ARCHIVE:
 719           whole_archive = false;
 720           break;
 721         case 'O':
 722           /* FIXME "-O<non-digits> <value>" used to set the address of
 723              section <non-digits>.  Was this for compatibility with
 724              something, or can we create a new option to do that
 725              (with a syntax similar to -defsym)?
 726              getopt can't handle two args to an option without kludges.  */
 727
 728           /* Enable optimizations of output files.  */
 729           link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
 730           break;
 731         case 'o':
 732           lang_add_output (optarg, 0);
 733           break;
 734         case OPTION_OFORMAT:
 735           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 736           break;
 737         case 'q':
 738           link_info.emitrelocations = true;
 739           break;
 740         case 'i':
 741         case 'r':
 742           link_info.relocateable = true;
 743           config.build_constructors = false;
 744           config.magic_demand_paged = false;
 745           config.text_read_only = false;
 746           config.dynamic_link = false;
 747           break;
 748         case 'R':
 749           /* The GNU linker traditionally uses -R to mean to include
 750              only the symbols from a file.  The Solaris linker uses -R
 751              to set the path used by the runtime linker to find
 752              libraries.  This is the GNU linker -rpath argument.  We
 753              try to support both simultaneously by checking the file
 754              named.  If it is a directory, rather than a regular file,
 755              we assume -rpath was meant.  */
 756           {
 757             struct stat s;
 758
 759             if (stat (optarg, &s) >= 0
 760                 && ! S_ISDIR (s.st_mode))
 761               {
 762                 lang_add_input_file (optarg,
 763                                      lang_input_file_is_symbols_only_enum,
 764                                      (char *) NULL);
 765                 break;
 766               }
 767           }
 768           /* Fall through.  */
 769         case OPTION_RPATH:
 770           if (command_line.rpath == NULL)
 771             command_line.rpath = buystring (optarg);
 772           else
 773             {
 774               size_t rpath_len = strlen (command_line.rpath);
 775               size_t optarg_len = strlen (optarg);
 776               char *buf;
 777               char *cp = command_line.rpath;
 778
 779               /* First see whether OPTARG is already in the path.  */
 780               do
 781                 {
 782                   size_t idx = 0;
 783                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 784                     ++idx;
 785                   if (optarg[idx] == '\0'
 786                       && (cp[idx] == '\0' || cp[idx] == ':'))
 787                     /* We found it.  */
 788                     break;
 789
 790                   /* Not yet found.  */
 791                   cp = strchr (cp, ':');
 792                   if (cp != NULL)
 793                     ++cp;
 794                 }
 795               while (cp != NULL);
 796
 797               if (cp == NULL)
 798                 {
 799                   buf = xmalloc (rpath_len + optarg_len + 2);
 800                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 801                   free (command_line.rpath);
 802                   command_line.rpath = buf;
 803                 }
 804             }
 805           break;
 806         case OPTION_RPATH_LINK:
 807           if (command_line.rpath_link == NULL)
 808             command_line.rpath_link = buystring (optarg);
 809           else
 810             {
 811               char *buf;
 812
 813               buf = xmalloc (strlen (command_line.rpath_link)
 814                              + strlen (optarg)
 815                              + 2);
 816               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 817               free (command_line.rpath_link);
 818               command_line.rpath_link = buf;
 819             }
 820           break;
 821         case OPTION_RELAX:
 822           command_line.relax = true;
 823           break;
 824         case OPTION_RETAIN_SYMBOLS_FILE:
 825           add_keepsyms_file (optarg);
 826           break;
 827         case 'S':
 828           link_info.strip = strip_debugger;
 829           break;
 830         case 's':
 831           link_info.strip = strip_all;
 832           break;
 833         case OPTION_SHARED:
 834           if (config.has_shared)
 835             link_info.shared = true;
 836           else
 837             einfo (_("%P%F: -shared not supported\n"));
 838           break;
 839         case 'h':               /* Used on Solaris.  */
 840         case OPTION_SONAME:
 841           command_line.soname = optarg;
 842           break;
 843         case OPTION_SORT_COMMON:
 844           config.sort_common = true;
 845           break;
 846         case OPTION_STATS:
 847           config.stats = true;
 848           break;
 849         case OPTION_SYMBOLIC:
 850           link_info.symbolic = true;
 851           break;
 852         case 't':
 853           trace_files = true;
 854           break;
 855         case 'T':
 856           ldfile_open_command_file (optarg);
 857           parser_input = input_script;
 858           yyparse ();
 859           break;
 860         case OPTION_SECTION_START:
 861           {
 862             char *optarg2;
 863             char *sec_name;
 864             int len;
 865
 866             /* Check for <something>=<somthing>...  */
 867             optarg2 = strchr (optarg, '=');
 868             if (optarg2 == NULL)
 869               {
 870                 fprintf (stderr,
 871                          _("%s: Invalid argument to option \"--section-start\"\n"),
 872                          program_name);
 873                 xexit (1);
 874               }
 875
 876             optarg2++;
 877
 878             /* So far so good.  Are all the args present?  */
 879             if ((*optarg == '\0') || (*optarg2 == '\0'))
 880               {
 881                 fprintf (stderr,
 882                          _("%s: Missing argument(s) to option \"--section-start\"\n"),
 883                          program_name);
 884                 xexit (1);
 885               }
 886
 887             /* We must copy the section name as set_section_start
 888                doesn't do it for us.  */
 889             len = optarg2 - optarg;
 890             sec_name = xmalloc (len);
 891             memcpy (sec_name, optarg, len - 1);
 892             sec_name[len - 1] = 0;
 893
 894             /* Then set it...  */
 895             set_section_start (sec_name, optarg2);
 896           }
 897           break;
 898         case OPTION_TARGET_HELP:
 899           /* Mention any target specific options.  */
 900           ldemul_list_emulation_options (stdout);
 901           exit (0);
 902         case OPTION_TBSS:
 903           set_section_start (".bss", optarg);
 904           break;
 905         case OPTION_TDATA:
 906           set_section_start (".data", optarg);
 907           break;
 908         case OPTION_TTEXT:
 909           set_section_start (".text", optarg);
 910           break;
 911         case OPTION_TRADITIONAL_FORMAT:
 912           link_info.traditional_format = true;
 913           break;
 914         case OPTION_TASK_LINK:
 915           link_info.task_link = true;
 916           /* Fall through - do an implied -r option.  */
 917         case OPTION_UR:
 918           link_info.relocateable = true;
 919           config.build_constructors = true;
 920           config.magic_demand_paged = false;
 921           config.text_read_only = false;
 922           config.dynamic_link = false;
 923           break;
 924         case 'u':
 925           ldlang_add_undef (optarg);
 926           break;
 927         case OPTION_UNIQUE:
 928           config.unique_orphan_sections = true;
 929           break;
 930         case OPTION_VERBOSE:
 931           ldversion (1);
 932           version_printed = true;
 933           trace_file_tries = true;
 934           break;
 935         case 'v':
 936           ldversion (0);
 937           version_printed = true;
 938           break;
 939         case 'V':
 940           ldversion (1);
 941           version_printed = true;
 942           break;
 943         case OPTION_VERSION:
 944           /* This output is intended to follow the GNU standards document.  */
 945           printf ("GNU ld %s\n", ld_program_version);
 946           printf (_("Copyright 2000 Free Software Foundation, Inc.\n"));
 947           printf (_("\
 948 This program is free software; you may redistribute it under the terms of\n\
 949 the GNU General Public License.  This program has absolutely no warranty.\n"));
 950           {
 951             ld_emulation_xfer_type **ptr = ld_emulations;
 952
 953             printf (_("  Supported emulations:\n"));
 954             while (*ptr)
 955               {
 956                 printf ("   %s\n", (*ptr)->emulation_name);
 957                 ptr++;
 958               }
 959           }
 960           xexit (0);
 961           break;
 962         case OPTION_VERSION_SCRIPT:
 963           /* This option indicates a small script that only specifies
 964              version information.  Read it, but don't assume that
 965              we've seen a linker script.  */
 966           {
 967             boolean hold_had_script;
 968
 969             hold_had_script = had_script;
 970             ldfile_open_command_file (optarg);
 971             had_script = hold_had_script;
 972             parser_input = input_version_script;
 973             yyparse ();
 974           }
 975           break;
 976         case OPTION_VERSION_EXPORTS_SECTION:
 977           /* This option records a version symbol to be applied to the
 978              symbols listed for export to be found in the object files
 979              .exports sections.  */
 980           command_line.version_exports_section = optarg;
 981           break;
 982         case OPTION_WARN_COMMON:
 983           config.warn_common = true;
 984           break;
 985         case OPTION_WARN_CONSTRUCTORS:
 986           config.warn_constructors = true;
 987           break;
 988         case OPTION_WARN_MULTIPLE_GP:
 989           config.warn_multiple_gp = true;
 990           break;
 991         case OPTION_WARN_ONCE:
 992           config.warn_once = true;
 993           break;
 994         case OPTION_WARN_SECTION_ALIGN:
 995           config.warn_section_align = true;
 996           break;
 997         case OPTION_WHOLE_ARCHIVE:
 998           whole_archive = true;
 999           break;
1000         case OPTION_WRAP:
1001           add_wrap (optarg);
1002           break;
1003         case 'X':
1004           link_info.discard = discard_l;
1005           break;
1006         case 'x':
1007           link_info.discard = discard_all;
1008           break;
1009         case 'Y':
1010           if (strncmp (optarg, "P,", 2) == 0)
1011             optarg += 2;
1012           default_dirlist = xstrdup (optarg);
1013           break;
1014         case 'y':
1015           add_ysym (optarg);
1016           break;
1017         case OPTION_SPLIT_BY_RELOC:
1018           if (optarg != NULL)
1019             config.split_by_reloc = strtoul (optarg, NULL, 0);
1020           else
1021             config.split_by_reloc = 32768;
1022           break;
1023         case OPTION_SPLIT_BY_FILE:
1024           if (optarg != NULL)
1025             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1026           else
1027             config.split_by_file = 1;
1028           break;
1029         case OPTION_CHECK_SECTIONS:
1030           command_line.check_section_addresses = true;
1031           break;
1032         case OPTION_NO_CHECK_SECTIONS:
1033           command_line.check_section_addresses = false;
1034           break;
1035         case '(':
1036           if (ingroup)
1037             {
1038               fprintf (stderr,
1039                        _("%s: may not nest groups (--help for usage)\n"),
1040                        program_name);
1041               xexit (1);
1042             }
1043           lang_enter_group ();
1044           ingroup = 1;
1045           break;
1046         case ')':
1047           if (! ingroup)
1048             {
1049               fprintf (stderr,
1050                        _("%s: group ended before it began (--help for usage)\n"),
1051                        program_name);
1052               xexit (1);
1053             }
1054           lang_leave_group ();
1055           ingroup = 0;
1056           break;
1057         case OPTION_MPC860C0:
1058           link_info.mpc860c0 = 20;      /* default value (in bytes) */
1059           if (optarg)
1060             {
1061               unsigned words;
1062
1063               words = is_num (optarg, 1, 10, 0);
1064               if (words == 0)
1065                 {
1066                   fprintf (stderr,
1067                            _("%s: Invalid argument to option \"mpc860c0\"\n"),
1068                            program_name);
1069                   xexit (1);
1070                 }
1071               link_info.mpc860c0 = words * 4;   /* convert words to bytes */
1072             }
1073           command_line.relax = true;
1074           break;
1075
1076         case OPTION_INIT:
1077           link_info.init_function = optarg;
1078           break;
1079
1080         case OPTION_FINI:
1081           link_info.fini_function = optarg;
1082           break;
1083         }
1084     }
1085
1086   if (ingroup)
1087     lang_leave_group ();
1088
1089   if (default_dirlist != NULL)
1090     set_default_dirlist (default_dirlist);
1091
1092 }
1093
1094 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1095    library search path.  */
1096
1097 static void
1098 set_default_dirlist (dirlist_ptr)
1099      char *dirlist_ptr;
1100 {
1101   char *p;
1102
1103   while (1)
1104     {
1105       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1106       if (p != NULL)
1107         *p = '\0';
1108       if (*dirlist_ptr != '\0')
1109         ldfile_add_library_path (dirlist_ptr, true);
1110       if (p == NULL)
1111         break;
1112       dirlist_ptr = p + 1;
1113     }
1114 }
1115
1116 static void
1117 set_section_start (sect, valstr)
1118      char *sect, *valstr;
1119 {
1120   const char *end;
1121   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1122   if (*end)
1123     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1124   lang_section_start (sect, exp_intop (val));
1125 }
1126 \f
1127 /* Print help messages for the options.  */
1128
1129 static void
1130 help ()
1131 {
1132   int i;
1133   const char **targets, **pp;
1134
1135   printf (_("Usage: %s [options] file...\n"), program_name);
1136
1137   printf (_("Options:\n"));
1138   for (i = 0; i < OPTION_COUNT; i++)
1139     {
1140       if (ld_options[i].doc != NULL)
1141         {
1142           boolean comma;
1143           int len;
1144           int j;
1145
1146           printf ("  ");
1147
1148           comma = false;
1149           len = 2;
1150
1151           j = i;
1152           do
1153             {
1154               if (ld_options[j].shortopt != '\0'
1155                   && ld_options[j].control != NO_HELP)
1156                 {
1157                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1158                   len += (comma ? 2 : 0) + 2;
1159                   if (ld_options[j].arg != NULL)
1160                     {
1161                       if (ld_options[j].opt.has_arg != optional_argument)
1162                         {
1163                           printf (" ");
1164                           ++len;
1165                         }
1166                       printf ("%s", _(ld_options[j].arg));
1167                       len += strlen (_(ld_options[j].arg));
1168                     }
1169                   comma = true;
1170                 }
1171               ++j;
1172             }
1173           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1174
1175           j = i;
1176           do
1177             {
1178               if (ld_options[j].opt.name != NULL
1179                   && ld_options[j].control != NO_HELP)
1180                 {
1181                   printf ("%s-%s%s",
1182                           comma ? ", " : "",
1183                           ld_options[j].control == TWO_DASHES ? "-" : "",
1184                           ld_options[j].opt.name);
1185                   len += ((comma ? 2 : 0)
1186                           + 1
1187                           + (ld_options[j].control == TWO_DASHES ? 1 : 0)
1188                           + strlen (ld_options[j].opt.name));
1189                   if (ld_options[j].arg != NULL)
1190                     {
1191                       printf (" %s", _(ld_options[j].arg));
1192                       len += 1 + strlen (_(ld_options[j].arg));
1193                     }
1194                   comma = true;
1195                 }
1196               ++j;
1197             }
1198           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1199
1200           if (len >= 30)
1201             {
1202               printf ("\n");
1203               len = 0;
1204             }
1205
1206           for (; len < 30; len++)
1207             putchar (' ');
1208
1209           printf ("%s\n", _(ld_options[i].doc));
1210         }
1211     }
1212
1213   /* Note: Various tools (such as libtool) depend upon the
1214      format of the listings below - do not change them.  */
1215   /* xgettext:c-format */
1216   printf (_("%s: supported targets:"), program_name);
1217   targets = bfd_target_list ();
1218   for (pp = targets; *pp != NULL; pp++)
1219     printf (" %s", *pp);
1220   free (targets);
1221   printf ("\n");
1222
1223   /* xgettext:c-format */
1224   printf (_("%s: supported emulations: "), program_name);
1225   ldemul_list_emulations (stdout);
1226   printf ("\n");
1227
1228   /* xgettext:c-format */
1229   printf (_("%s: emulation specific options:\n"), program_name);
1230   ldemul_list_emulation_options (stdout);
1231   printf ("\n");
1232
1233   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1234 }