ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GLD, the Gnu Linker.
   7
   8 GLD is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GLD is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GLD; see the file COPYING.  If not, write to the Free
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 02111-1307, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "libiberty.h"
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <ctype.h>
  29 #include "getopt.h"
  30 #include "bfdlink.h"
  31 #include "ld.h"
  32 #include "ldmain.h"
  33 #include "ldmisc.h"
  34 #include "ldexp.h"
  35 #include "ldlang.h"
  36 #include "ldgram.h"
  37 #include "ldlex.h"
  38 #include "ldfile.h"
  39 #include "ldver.h"
  40 #include "ldemul.h"
  41 #include "demangle.h"
  42
  43 #ifndef PATH_SEPARATOR
  44 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  45 #define PATH_SEPARATOR ';'
  46 #else
  47 #define PATH_SEPARATOR ':'
  48 #endif
  49 #endif
  50
  51 /* Somewhere above, sys/stat.h got included . . . .  */
  52 #if !defined(S_ISDIR) && defined(S_IFDIR)
  53 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  54 #endif
  55
  56 /* Omit args to avoid the possibility of clashing with a system header
  57    that might disagree about consts.  */
  58 unsigned long strtoul ();
  59
  60 static int is_num PARAMS ((const char *, int, int, int));
  61 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
  62 static void set_section_start PARAMS ((char *sect, char *valstr));
  63 static void help PARAMS ((void));
  64
  65 /* Non-zero if we are processing a --defsym from the command line.  */
  66 int parsing_defsym = 0;
  67
  68 /* Codes used for the long options with no short synonyms.  150 isn't
  69    special; it's just an arbitrary non-ASCII char value.  */
  70
  71 #define OPTION_ASSERT                   150
  72 #define OPTION_CALL_SHARED              (OPTION_ASSERT + 1)
  73 #define OPTION_CREF                     (OPTION_CALL_SHARED + 1)
  74 #define OPTION_DEFSYM                   (OPTION_CREF + 1)
  75 #define OPTION_DEMANGLE                 (OPTION_DEFSYM + 1)
  76 #define OPTION_DYNAMIC_LINKER           (OPTION_DEMANGLE + 1)
  77 #define OPTION_EB                       (OPTION_DYNAMIC_LINKER + 1)
  78 #define OPTION_EL                       (OPTION_EB + 1)
  79 #define OPTION_EMBEDDED_RELOCS          (OPTION_EL + 1)
  80 #define OPTION_EXPORT_DYNAMIC           (OPTION_EMBEDDED_RELOCS + 1)
  81 #define OPTION_HELP                     (OPTION_EXPORT_DYNAMIC + 1)
  82 #define OPTION_IGNORE                   (OPTION_HELP + 1)
  83 #define OPTION_MAP                      (OPTION_IGNORE + 1)
  84 #define OPTION_NO_DEMANGLE              (OPTION_MAP + 1)
  85 #define OPTION_NO_KEEP_MEMORY           (OPTION_NO_DEMANGLE + 1)
  86 #define OPTION_NO_WARN_MISMATCH         (OPTION_NO_KEEP_MEMORY + 1)
  87 #define OPTION_NOINHIBIT_EXEC           (OPTION_NO_WARN_MISMATCH + 1)
  88 #define OPTION_NON_SHARED               (OPTION_NOINHIBIT_EXEC + 1)
  89 #define OPTION_NO_WHOLE_ARCHIVE         (OPTION_NON_SHARED + 1)
  90 #define OPTION_OFORMAT                  (OPTION_NO_WHOLE_ARCHIVE + 1)
  91 #define OPTION_RELAX                    (OPTION_OFORMAT + 1)
  92 #define OPTION_RETAIN_SYMBOLS_FILE      (OPTION_RELAX + 1)
  93 #define OPTION_RPATH                    (OPTION_RETAIN_SYMBOLS_FILE + 1)
  94 #define OPTION_RPATH_LINK               (OPTION_RPATH + 1)
  95 #define OPTION_SHARED                   (OPTION_RPATH_LINK + 1)
  96 #define OPTION_SONAME                   (OPTION_SHARED + 1)
  97 #define OPTION_SORT_COMMON              (OPTION_SONAME + 1)
  98 #define OPTION_STATS                    (OPTION_SORT_COMMON + 1)
  99 #define OPTION_SYMBOLIC                 (OPTION_STATS + 1)
 100 #define OPTION_TASK_LINK                (OPTION_SYMBOLIC + 1)
 101 #define OPTION_TBSS                     (OPTION_TASK_LINK + 1)
 102 #define OPTION_TDATA                    (OPTION_TBSS + 1)
 103 #define OPTION_TTEXT                    (OPTION_TDATA + 1)
 104 #define OPTION_TRADITIONAL_FORMAT       (OPTION_TTEXT + 1)
 105 #define OPTION_UR                       (OPTION_TRADITIONAL_FORMAT + 1)
 106 #define OPTION_VERBOSE                  (OPTION_UR + 1)
 107 #define OPTION_VERSION                  (OPTION_VERBOSE + 1)
 108 #define OPTION_VERSION_SCRIPT           (OPTION_VERSION + 1)
 109 #define OPTION_VERSION_EXPORTS_SECTION  (OPTION_VERSION_SCRIPT + 1)
 110 #define OPTION_WARN_COMMON              (OPTION_VERSION_EXPORTS_SECTION + 1)
 111 #define OPTION_WARN_CONSTRUCTORS        (OPTION_WARN_COMMON + 1)
 112 #define OPTION_WARN_FATAL               (OPTION_WARN_CONSTRUCTORS + 1)
 113 #define OPTION_WARN_MULTIPLE_GP         (OPTION_WARN_FATAL + 1)
 114 #define OPTION_WARN_ONCE                (OPTION_WARN_MULTIPLE_GP + 1)
 115 #define OPTION_WARN_SECTION_ALIGN       (OPTION_WARN_ONCE + 1)
 116 #define OPTION_SPLIT_BY_RELOC           (OPTION_WARN_SECTION_ALIGN + 1)
 117 #define OPTION_SPLIT_BY_FILE            (OPTION_SPLIT_BY_RELOC + 1)
 118 #define OPTION_WHOLE_ARCHIVE            (OPTION_SPLIT_BY_FILE + 1)
 119 #define OPTION_WRAP                     (OPTION_WHOLE_ARCHIVE + 1)
 120 #define OPTION_FORCE_EXE_SUFFIX         (OPTION_WRAP + 1)
 121 #define OPTION_GC_SECTIONS              (OPTION_FORCE_EXE_SUFFIX + 1)
 122 #define OPTION_NO_GC_SECTIONS           (OPTION_GC_SECTIONS + 1)
 123 #define OPTION_CHECK_SECTIONS           (OPTION_NO_GC_SECTIONS + 1)
 124 #define OPTION_NO_CHECK_SECTIONS        (OPTION_CHECK_SECTIONS + 1)
 125 #define OPTION_MPC860C0                 (OPTION_NO_CHECK_SECTIONS + 1)
 126 #define OPTION_NO_UNDEFINED             (OPTION_MPC860C0 + 1)
 127 #define OPTION_INIT                     (OPTION_NO_UNDEFINED + 1)
 128 #define OPTION_FINI                     (OPTION_INIT + 1)
 129 #define OPTION_SECTION_START            (OPTION_FINI + 1)
 130 #define OPTION_UNIQUE                   (OPTION_SECTION_START + 1)
 131 #define OPTION_TARGET_HELP              (OPTION_UNIQUE + 1)
 132 #define OPTION_ALLOW_SHLIB_UNDEFINED    (OPTION_TARGET_HELP + 1)
 133 #define OPTION_DISCARD_NONE             (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
 134
 135 /* The long options.  This structure is used for both the option
 136    parsing and the help text.  */
 137
 138 struct ld_option
 139 {
 140   /* The long option information.  */
 141   struct option opt;
 142   /* The short option with the same meaning ('\0' if none).  */
 143   char shortopt;
 144   /* The name of the argument (NULL if none).  */
 145   const char *arg;
 146   /* The documentation string.  If this is NULL, this is a synonym for
 147      the previous option.  */
 148   const char *doc;
 149   enum {
 150     /* Use one dash before long option name.  */
 151     ONE_DASH,
 152     /* Use two dashes before long option name.  */
 153     TWO_DASHES,
 154     /* Only accept two dashes before the long option name.
 155        This is an overloading of the use of this enum, since originally it
 156        was only intended to tell the --help display function how to display
 157        the long option name.  This feature was added in order to resolve
 158        the confusion about the -omagic command line switch.  Is it setting
 159        the output file name to "magic" or is it setting the NMAGIC flag on
 160        the output ?  It has been decided that it is setting the output file
 161        name, and that if you want to set the NMAGIC flag you should use -N
 162        or --omagic.  */
 163     EXACTLY_TWO_DASHES,
 164     /* Don't mention this option in --help output.  */
 165     NO_HELP
 166   } control;
 167 };
 168
 169 static const struct ld_option ld_options[] =
 170 {
 171   { {NULL, required_argument, NULL, '\0'},
 172       'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 173       ONE_DASH },
 174   { {"architecture", required_argument, NULL, 'A'},
 175       'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 176   { {"format", required_argument, NULL, 'b'},
 177       'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
 178   { {"mri-script", required_argument, NULL, 'c'},
 179       'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 180   { {"dc", no_argument, NULL, 'd'},
 181       'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 182   { {"dp", no_argument, NULL, 'd'},
 183       '\0', NULL, NULL, ONE_DASH },
 184   { {"entry", required_argument, NULL, 'e'},
 185       'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 186   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 187       'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 188   { {"EB", no_argument, NULL, OPTION_EB},
 189       '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 190   { {"EL", no_argument, NULL, OPTION_EL},
 191       '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 192   { {"auxiliary", required_argument, NULL, 'f'},
 193       'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 194       TWO_DASHES },
 195   { {"filter", required_argument, NULL, 'F'},
 196       'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
 197   { {NULL, no_argument, NULL, '\0'},
 198       'g', NULL, N_("Ignored"), ONE_DASH },
 199   { {"gpsize", required_argument, NULL, 'G'},
 200       'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 201       TWO_DASHES },
 202   { {"soname", required_argument, NULL, OPTION_SONAME},
 203       'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 204   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 205       'I', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
 206   { {"library", required_argument, NULL, 'l'},
 207       'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 208   { {"library-path", required_argument, NULL, 'L'},
 209       'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
 210   { {NULL, required_argument, NULL, '\0'},
 211       'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 212   { {"print-map", no_argument, NULL, 'M'},
 213       'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 214   { {"nmagic", no_argument, NULL, 'n'},
 215       'n', NULL, N_("Do not page align data"), TWO_DASHES },
 216   { {"omagic", no_argument, NULL, 'N'},
 217       'N', NULL, N_("Do not page align data, do not make text readonly"),
 218       EXACTLY_TWO_DASHES },
 219   { {"output", required_argument, NULL, 'o'},
 220       'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 221   { {NULL, required_argument, NULL, '\0'},
 222       'O', NULL, N_("Optimize output file"), ONE_DASH },
 223   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 224       '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 225   { {"emit-relocs", no_argument, NULL, 'q'},
 226       'q', NULL, "Generate relocations in final output", TWO_DASHES },
 227   { {"relocateable", no_argument, NULL, 'r'},
 228       'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
 229   { {NULL, no_argument, NULL, '\0'},
 230       'i', NULL, NULL, ONE_DASH },
 231   { {"just-symbols", required_argument, NULL, 'R'},
 232       'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 233       TWO_DASHES },
 234   { {"strip-all", no_argument, NULL, 's'},
 235       's', NULL, N_("Strip all symbols"), TWO_DASHES },
 236   { {"strip-debug", no_argument, NULL, 'S'},
 237       'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 238   { {"trace", no_argument, NULL, 't'},
 239       't', NULL, N_("Trace file opens"), TWO_DASHES },
 240   { {"script", required_argument, NULL, 'T'},
 241       'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 242   { {"undefined", required_argument, NULL, 'u'},
 243       'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
 244   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 245       '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 246   { {"Ur", no_argument, NULL, OPTION_UR},
 247       '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 248   { {"version", no_argument, NULL, OPTION_VERSION},
 249       'v', NULL, N_("Print version information"), TWO_DASHES },
 250   { {NULL, no_argument, NULL, '\0'},
 251       'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 252   { {"discard-all", no_argument, NULL, 'x'},
 253       'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 254   { {"discard-locals", no_argument, NULL, 'X'},
 255       'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 256   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 257       '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 258   { {"trace-symbol", required_argument, NULL, 'y'},
 259       'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 260   { {NULL, required_argument, NULL, '\0'},
 261       'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
 262   { {"start-group", no_argument, NULL, '('},
 263       '(', NULL, N_("Start a group"), TWO_DASHES },
 264   { {"end-group", no_argument, NULL, ')'},
 265       ')', NULL, N_("End a group"), TWO_DASHES },
 266   { {"assert", required_argument, NULL, OPTION_ASSERT},
 267       '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 268   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 269       '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 270   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 271       '\0', NULL, NULL, ONE_DASH },
 272   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 273       '\0', NULL, NULL, ONE_DASH },
 274   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 275       '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 276   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 277       '\0', NULL, NULL, ONE_DASH },
 278   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 279       '\0', NULL, NULL, ONE_DASH },
 280   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 281       '\0', NULL, NULL, ONE_DASH },
 282   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 283       '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 284   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 285       '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
 286   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 287       '\0', NULL, N_("Do not check section addresses for overlaps"),
 288       TWO_DASHES },
 289   { {"cref", no_argument, NULL, OPTION_CREF},
 290       '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 291   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 292       '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 293   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 294       '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
 295   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 296       '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 297   { {"fini", required_argument, NULL, OPTION_FINI},
 298      '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 299   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 300       '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 301   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 302       '\0', NULL, N_("Remove unused sections (on some targets)"),
 303       TWO_DASHES },
 304   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 305       '\0', NULL, N_("Don't remove unused sections (default)"),
 306       TWO_DASHES },
 307   { {"help", no_argument, NULL, OPTION_HELP},
 308       '\0', NULL, N_("Print option help"), TWO_DASHES },
 309   { {"init", required_argument, NULL, OPTION_INIT},
 310      '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 311   { {"Map", required_argument, NULL, OPTION_MAP},
 312       '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 313   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 314       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 315   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 316       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 317   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 318      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 319   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 320      '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
 321   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 322       '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 323   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 324       '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 325   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 326       '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
 327   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 328       '\0', NULL, NULL, NO_HELP },
 329   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 330       '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
 331   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 332       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 333   { {"relax", no_argument, NULL, OPTION_RELAX},
 334       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 335   { {"retain-symbols-file", required_argument, NULL,
 336        OPTION_RETAIN_SYMBOLS_FILE},
 337       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 338   { {"rpath", required_argument, NULL, OPTION_RPATH},
 339       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 340   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 341       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 342   { {"shared", no_argument, NULL, OPTION_SHARED},
 343       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 344   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 345       '\0', NULL, NULL, ONE_DASH },
 346   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 347       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 348   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 349       '\0', NULL, NULL, NO_HELP },
 350   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 351       '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
 352   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 353       '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 354   { {"stats", no_argument, NULL, OPTION_STATS},
 355       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 356   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 357       '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 358   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 359       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 360   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 361       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 362   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 363       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 364   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 365       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 366   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 367       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 368   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 369       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 370   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 371       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 372   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 373       '\0', NULL, NULL, NO_HELP },
 374   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 375       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 376   { {"version-exports-section", required_argument, NULL,
 377      OPTION_VERSION_EXPORTS_SECTION },
 378     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 379     TWO_DASHES },
 380   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 381       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 382   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 383       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 384       TWO_DASHES },
 385   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 386       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 387   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 388       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 389   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 390       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 391       TWO_DASHES },
 392   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 393      '\0', NULL, N_("Treat warnings as errors"),
 394      TWO_DASHES },
 395   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 396       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 397   { {"wrap", required_argument, NULL, OPTION_WRAP},
 398       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 399   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 400       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 401 };
 402
 403 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 404
 405 /* Test STRING for containing a string of digits that form a number
 406    between MIN and MAX.  The return value is the number or ERR.  */
 407
 408 static int
 409 is_num (string, min, max, err)
 410      const char *string;
 411      int min;
 412      int max;
 413      int err;
 414 {
 415   int result = 0;
 416
 417   for (; *string; ++string)
 418     {
 419       if (! isdigit (*string))
 420         {
 421           result = err;
 422           break;
 423         }
 424       result = result * 10 + (*string - '0');
 425     }
 426   if (result < min || result > max)
 427     result = err;
 428
 429   return result;
 430 }
 431
 432 void
 433 parse_args (argc, argv)
 434      unsigned argc;
 435      char **argv;
 436 {
 437   unsigned i;
 438   int is, il, irl;
 439   int ingroup = 0;
 440   char *default_dirlist = NULL;
 441   char shortopts[OPTION_COUNT * 3 + 2];
 442   struct option longopts[OPTION_COUNT + 1];
 443   struct option really_longopts[OPTION_COUNT + 1];
 444   int last_optind;
 445
 446   /* Starting the short option string with '-' is for programs that
 447      expect options and other ARGV-elements in any order and that care about
 448      the ordering of the two.  We describe each non-option ARGV-element
 449      as if it were the argument of an option with character code 1.  */
 450   shortopts[0] = '-';
 451   is = 1;
 452   il = 0;
 453   irl = 0;
 454   for (i = 0; i < OPTION_COUNT; i++)
 455     {
 456       if (ld_options[i].shortopt != '\0')
 457         {
 458           shortopts[is] = ld_options[i].shortopt;
 459           ++is;
 460           if (ld_options[i].opt.has_arg == required_argument
 461               || ld_options[i].opt.has_arg == optional_argument)
 462             {
 463               shortopts[is] = ':';
 464               ++is;
 465               if (ld_options[i].opt.has_arg == optional_argument)
 466                 {
 467                   shortopts[is] = ':';
 468                   ++is;
 469                 }
 470             }
 471         }
 472       if (ld_options[i].opt.name != NULL)
 473         {
 474           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 475             {
 476               really_longopts[irl] = ld_options[i].opt;
 477               ++irl;
 478             }
 479           else
 480             {
 481               longopts[il] = ld_options[i].opt;
 482               ++il;
 483             }
 484         }
 485     }
 486   shortopts[is] = '\0';
 487   longopts[il].name = NULL;
 488   really_longopts[irl].name = NULL;
 489
 490   /* The -G option is ambiguous on different platforms.  Sometimes it
 491      specifies the largest data size to put into the small data
 492      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 493      the first form takes an argument, while the second does not.
 494
 495      We need to permit the --shared form because on some platforms,
 496      such as Solaris, gcc -shared will pass -G to the linker.
 497
 498      To permit either usage, we look through the argument list.  If we
 499      find -G not followed by a number, we change it into --shared.
 500      This will work for most normal cases.  */
 501   for (i = 1; i < argc; i++)
 502     if (strcmp (argv[i], "-G") == 0
 503         && (i + 1 >= argc
 504             || ! isdigit ((unsigned char) argv[i + 1][0])))
 505       argv[i] = (char *) "--shared";
 506
 507   /* Because we permit long options to start with a single dash, and
 508      we have a --library option, and the -l option is conventionally
 509      used with an immediately following argument, we can have bad
 510      results if somebody tries to use -l with a library whose name
 511      happens to start with "ibrary", as in -li.  We avoid problems by
 512      simply turning -l into --library.  This means that users will
 513      have to use two dashes in order to use --library, which is OK
 514      since that's how it is documented.
 515
 516      FIXME: It's possible that this problem can arise for other short
 517      options as well, although the user does always have the recourse
 518      of adding a space between the option and the argument.  */
 519   for (i = 1; i < argc; i++)
 520     {
 521       if (argv[i][0] == '-'
 522           && argv[i][1] == 'l'
 523           && argv[i][2] != '\0')
 524         {
 525           char *n;
 526
 527           n = (char *) xmalloc (strlen (argv[i]) + 20);
 528           sprintf (n, "--library=%s", argv[i] + 2);
 529           argv[i] = n;
 530         }
 531     }
 532
 533   last_optind = -1;
 534   while (1)
 535     {
 536       int longind, errind;
 537       int optc;
 538
 539       /* Using last_optind lets us avoid calling ldemul_parse_args
 540          multiple times on a single option, which would lead to
 541          confusion in the internal static variables maintained by
 542          getopt.  This could otherwise happen for an argument like
 543          -nx, in which the -n is parsed as a single option, and we
 544          loop around to pick up the -x.  */
 545       if (optind != last_optind)
 546         {
 547           if (ldemul_parse_args (argc, argv))
 548             continue;
 549           last_optind = optind;
 550         }
 551
 552       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 553          can indicate a long option.  */
 554       opterr = 0;
 555       errind = optind;
 556       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 557       if (optc == '?')
 558         {
 559           --optind;
 560           optc = getopt_long (argc, argv, shortopts, really_longopts, &longind);
 561         }
 562
 563       if (optc == -1)
 564         break;
 565
 566       switch (optc)
 567         {
 568         case '?':
 569           fprintf (stderr, _("%s: unrecognized option '%s'\n"),
 570                    program_name, argv[errind]);
 571         default:
 572           fprintf (stderr,
 573                    _("%s: use the --help option for usage information\n"),
 574                    program_name);
 575           xexit (1);
 576         case 1:                 /* File name.  */
 577           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 578                                (char *) NULL);
 579           break;
 580
 581         case OPTION_IGNORE:
 582           break;
 583         case 'a':
 584           /* For HP/UX compatibility.  Actually -a shared should mean
 585              ``use only shared libraries'' but, then, we don't
 586              currently support shared libraries on HP/UX anyhow.  */
 587           if (strcmp (optarg, "archive") == 0)
 588             config.dynamic_link = false;
 589           else if (strcmp (optarg, "shared") == 0
 590                    || strcmp (optarg, "default") == 0)
 591             config.dynamic_link = true;
 592           else
 593             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 594           break;
 595         case OPTION_ASSERT:
 596           /* FIXME: We just ignore these, but we should handle them.  */
 597           if (strcmp (optarg, "definitions") == 0)
 598             ;
 599           else if (strcmp (optarg, "nodefinitions") == 0)
 600             ;
 601           else if (strcmp (optarg, "nosymbolic") == 0)
 602             ;
 603           else if (strcmp (optarg, "pure-text") == 0)
 604             ;
 605           else
 606             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 607           break;
 608         case 'A':
 609           ldfile_add_arch (optarg);
 610           break;
 611         case 'b':
 612           lang_add_target (optarg);
 613           break;
 614         case 'c':
 615           ldfile_open_command_file (optarg);
 616           parser_input = input_mri_script;
 617           yyparse ();
 618           break;
 619         case OPTION_CALL_SHARED:
 620           config.dynamic_link = true;
 621           break;
 622         case OPTION_NON_SHARED:
 623           config.dynamic_link = false;
 624           break;
 625         case OPTION_CREF:
 626           command_line.cref = true;
 627           link_info.notice_all = true;
 628           break;
 629         case 'd':
 630           command_line.force_common_definition = true;
 631           break;
 632         case OPTION_DEFSYM:
 633           lex_string = optarg;
 634           lex_redirect (optarg);
 635           parser_input = input_defsym;
 636           parsing_defsym = 1;
 637           yyparse ();
 638           parsing_defsym = 0;
 639           lex_string = NULL;
 640           break;
 641         case OPTION_DEMANGLE:
 642           demangling = true;
 643           if (optarg != NULL)
 644             {
 645               enum demangling_styles style;
 646
 647               style = cplus_demangle_name_to_style (optarg);
 648               if (style == unknown_demangling)
 649                 einfo (_("%F%P: unknown demangling style `%s'"),
 650                        optarg);
 651
 652               cplus_demangle_set_style (style);
 653             }
 654           break;
 655         case 'I':               /* Used on Solaris.  */
 656         case OPTION_DYNAMIC_LINKER:
 657           command_line.interpreter = optarg;
 658           break;
 659         case OPTION_EB:
 660           command_line.endian = ENDIAN_BIG;
 661           break;
 662         case OPTION_EL:
 663           command_line.endian = ENDIAN_LITTLE;
 664           break;
 665         case OPTION_EMBEDDED_RELOCS:
 666           command_line.embedded_relocs = true;
 667           break;
 668         case OPTION_EXPORT_DYNAMIC:
 669         case 'E': /* HP/UX compatibility.  */
 670           link_info.export_dynamic = true;
 671           break;
 672         case 'e':
 673           lang_add_entry (optarg, true);
 674           break;
 675         case 'f':
 676           if (command_line.auxiliary_filters == NULL)
 677             {
 678               command_line.auxiliary_filters =
 679                 (char **) xmalloc (2 * sizeof (char *));
 680               command_line.auxiliary_filters[0] = optarg;
 681               command_line.auxiliary_filters[1] = NULL;
 682             }
 683           else
 684             {
 685               int c;
 686               char **p;
 687
 688               c = 0;
 689               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 690                 ++c;
 691               command_line.auxiliary_filters =
 692                 (char **) xrealloc (command_line.auxiliary_filters,
 693                                     (c + 2) * sizeof (char *));
 694               command_line.auxiliary_filters[c] = optarg;
 695               command_line.auxiliary_filters[c + 1] = NULL;
 696             }
 697           break;
 698         case 'F':
 699           command_line.filter_shlib = optarg;
 700           break;
 701         case OPTION_FORCE_EXE_SUFFIX:
 702           command_line.force_exe_suffix = true;
 703           break;
 704         case 'G':
 705           {
 706             char *end;
 707             g_switch_value = strtoul (optarg, &end, 0);
 708             if (*end)
 709               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 710           }
 711           break;
 712         case 'g':
 713           /* Ignore.  */
 714           break;
 715         case OPTION_GC_SECTIONS:
 716           command_line.gc_sections = true;
 717           break;
 718         case OPTION_HELP:
 719           help ();
 720           xexit (0);
 721           break;
 722         case 'L':
 723           ldfile_add_library_path (optarg, true);
 724           break;
 725         case 'l':
 726           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 727                                (char *) NULL);
 728           break;
 729         case 'M':
 730           config.map_filename = "-";
 731           break;
 732         case 'm':
 733           /* Ignore.  Was handled in a pre-parse.   */
 734           break;
 735         case OPTION_MAP:
 736           config.map_filename = optarg;
 737           break;
 738         case 'N':
 739           config.text_read_only = false;
 740           config.magic_demand_paged = false;
 741           config.dynamic_link = false;
 742           break;
 743         case 'n':
 744           config.magic_demand_paged = false;
 745           config.dynamic_link = false;
 746           break;
 747         case OPTION_NO_DEMANGLE:
 748           demangling = false;
 749           break;
 750         case OPTION_NO_GC_SECTIONS:
 751           command_line.gc_sections = false;
 752           break;
 753         case OPTION_NO_KEEP_MEMORY:
 754           link_info.keep_memory = false;
 755           break;
 756         case OPTION_NO_UNDEFINED:
 757           link_info.no_undefined = true;
 758           break;
 759         case OPTION_ALLOW_SHLIB_UNDEFINED:
 760           link_info.allow_shlib_undefined = true;
 761           break;
 762         case OPTION_NO_WARN_MISMATCH:
 763           command_line.warn_mismatch = false;
 764           break;
 765         case OPTION_NOINHIBIT_EXEC:
 766           force_make_executable = true;
 767           break;
 768         case OPTION_NO_WHOLE_ARCHIVE:
 769           whole_archive = false;
 770           break;
 771         case 'O':
 772           /* FIXME "-O<non-digits> <value>" used to set the address of
 773              section <non-digits>.  Was this for compatibility with
 774              something, or can we create a new option to do that
 775              (with a syntax similar to -defsym)?
 776              getopt can't handle two args to an option without kludges.  */
 777
 778           /* Enable optimizations of output files.  */
 779           link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
 780           break;
 781         case 'o':
 782           lang_add_output (optarg, 0);
 783           break;
 784         case OPTION_OFORMAT:
 785           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 786           break;
 787         case 'q':
 788           link_info.emitrelocations = true;
 789           break;
 790         case 'i':
 791         case 'r':
 792           link_info.relocateable = true;
 793           config.build_constructors = false;
 794           config.magic_demand_paged = false;
 795           config.text_read_only = false;
 796           config.dynamic_link = false;
 797           break;
 798         case 'R':
 799           /* The GNU linker traditionally uses -R to mean to include
 800              only the symbols from a file.  The Solaris linker uses -R
 801              to set the path used by the runtime linker to find
 802              libraries.  This is the GNU linker -rpath argument.  We
 803              try to support both simultaneously by checking the file
 804              named.  If it is a directory, rather than a regular file,
 805              we assume -rpath was meant.  */
 806           {
 807             struct stat s;
 808
 809             if (stat (optarg, &s) >= 0
 810                 && ! S_ISDIR (s.st_mode))
 811               {
 812                 lang_add_input_file (optarg,
 813                                      lang_input_file_is_symbols_only_enum,
 814                                      (char *) NULL);
 815                 break;
 816               }
 817           }
 818           /* Fall through.  */
 819         case OPTION_RPATH:
 820           if (command_line.rpath == NULL)
 821             command_line.rpath = xstrdup (optarg);
 822           else
 823             {
 824               size_t rpath_len = strlen (command_line.rpath);
 825               size_t optarg_len = strlen (optarg);
 826               char *buf;
 827               char *cp = command_line.rpath;
 828
 829               /* First see whether OPTARG is already in the path.  */
 830               do
 831                 {
 832                   size_t idx = 0;
 833                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 834                     ++idx;
 835                   if (optarg[idx] == '\0'
 836                       && (cp[idx] == '\0' || cp[idx] == ':'))
 837                     /* We found it.  */
 838                     break;
 839
 840                   /* Not yet found.  */
 841                   cp = strchr (cp, ':');
 842                   if (cp != NULL)
 843                     ++cp;
 844                 }
 845               while (cp != NULL);
 846
 847               if (cp == NULL)
 848                 {
 849                   buf = xmalloc (rpath_len + optarg_len + 2);
 850                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 851                   free (command_line.rpath);
 852                   command_line.rpath = buf;
 853                 }
 854             }
 855           break;
 856         case OPTION_RPATH_LINK:
 857           if (command_line.rpath_link == NULL)
 858             command_line.rpath_link = xstrdup (optarg);
 859           else
 860             {
 861               char *buf;
 862
 863               buf = xmalloc (strlen (command_line.rpath_link)
 864                              + strlen (optarg)
 865                              + 2);
 866               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 867               free (command_line.rpath_link);
 868               command_line.rpath_link = buf;
 869             }
 870           break;
 871         case OPTION_RELAX:
 872           command_line.relax = true;
 873           break;
 874         case OPTION_RETAIN_SYMBOLS_FILE:
 875           add_keepsyms_file (optarg);
 876           break;
 877         case 'S':
 878           link_info.strip = strip_debugger;
 879           break;
 880         case 's':
 881           link_info.strip = strip_all;
 882           break;
 883         case OPTION_SHARED:
 884           if (config.has_shared)
 885             link_info.shared = true;
 886           else
 887             einfo (_("%P%F: -shared not supported\n"));
 888           break;
 889         case 'h':               /* Used on Solaris.  */
 890         case OPTION_SONAME:
 891           command_line.soname = optarg;
 892           break;
 893         case OPTION_SORT_COMMON:
 894           config.sort_common = true;
 895           break;
 896         case OPTION_STATS:
 897           config.stats = true;
 898           break;
 899         case OPTION_SYMBOLIC:
 900           link_info.symbolic = true;
 901           break;
 902         case 't':
 903           trace_files = true;
 904           break;
 905         case 'T':
 906           ldfile_open_command_file (optarg);
 907           parser_input = input_script;
 908           yyparse ();
 909           break;
 910         case OPTION_SECTION_START:
 911           {
 912             char *optarg2;
 913             char *sec_name;
 914             int len;
 915
 916             /* Check for <something>=<somthing>...  */
 917             optarg2 = strchr (optarg, '=');
 918             if (optarg2 == NULL)
 919               {
 920                 fprintf (stderr,
 921                          _("%s: Invalid argument to option \"--section-start\"\n"),
 922                          program_name);
 923                 xexit (1);
 924               }
 925
 926             optarg2++;
 927
 928             /* So far so good.  Are all the args present?  */
 929             if ((*optarg == '\0') || (*optarg2 == '\0'))
 930               {
 931                 fprintf (stderr,
 932                          _("%s: Missing argument(s) to option \"--section-start\"\n"),
 933                          program_name);
 934                 xexit (1);
 935               }
 936
 937             /* We must copy the section name as set_section_start
 938                doesn't do it for us.  */
 939             len = optarg2 - optarg;
 940             sec_name = xmalloc (len);
 941             memcpy (sec_name, optarg, len - 1);
 942             sec_name[len - 1] = 0;
 943
 944             /* Then set it...  */
 945             set_section_start (sec_name, optarg2);
 946           }
 947           break;
 948         case OPTION_TARGET_HELP:
 949           /* Mention any target specific options.  */
 950           ldemul_list_emulation_options (stdout);
 951           exit (0);
 952         case OPTION_TBSS:
 953           set_section_start (".bss", optarg);
 954           break;
 955         case OPTION_TDATA:
 956           set_section_start (".data", optarg);
 957           break;
 958         case OPTION_TTEXT:
 959           set_section_start (".text", optarg);
 960           break;
 961         case OPTION_TRADITIONAL_FORMAT:
 962           link_info.traditional_format = true;
 963           break;
 964         case OPTION_TASK_LINK:
 965           link_info.task_link = true;
 966           /* Fall through - do an implied -r option.  */
 967         case OPTION_UR:
 968           link_info.relocateable = true;
 969           config.build_constructors = true;
 970           config.magic_demand_paged = false;
 971           config.text_read_only = false;
 972           config.dynamic_link = false;
 973           break;
 974         case 'u':
 975           ldlang_add_undef (optarg);
 976           break;
 977         case OPTION_UNIQUE:
 978           if (optarg != NULL)
 979             lang_add_unique (optarg);
 980           else
 981             config.unique_orphan_sections = true;
 982           break;
 983         case OPTION_VERBOSE:
 984           ldversion (1);
 985           version_printed = true;
 986           trace_file_tries = true;
 987           break;
 988         case 'v':
 989           ldversion (0);
 990           version_printed = true;
 991           break;
 992         case 'V':
 993           ldversion (1);
 994           version_printed = true;
 995           break;
 996         case OPTION_VERSION:
 997           /* This output is intended to follow the GNU standards document.  */
 998           printf ("GNU ld %s\n", ld_program_version);
 999           printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
1000           printf (_("\
1001 This program is free software; you may redistribute it under the terms of\n\
1002 the GNU General Public License.  This program has absolutely no warranty.\n"));
1003           {
1004             ld_emulation_xfer_type **ptr = ld_emulations;
1005
1006             printf (_("  Supported emulations:\n"));
1007             while (*ptr)
1008               {
1009                 printf ("   %s\n", (*ptr)->emulation_name);
1010                 ptr++;
1011               }
1012           }
1013           xexit (0);
1014           break;
1015         case OPTION_VERSION_SCRIPT:
1016           /* This option indicates a small script that only specifies
1017              version information.  Read it, but don't assume that
1018              we've seen a linker script.  */
1019           {
1020             FILE * hold_script_handle;
1021
1022             hold_script_handle = saved_script_handle;
1023             ldfile_open_command_file (optarg);
1024             saved_script_handle = hold_script_handle;
1025             parser_input = input_version_script;
1026             yyparse ();
1027           }
1028           break;
1029         case OPTION_VERSION_EXPORTS_SECTION:
1030           /* This option records a version symbol to be applied to the
1031              symbols listed for export to be found in the object files
1032              .exports sections.  */
1033           command_line.version_exports_section = optarg;
1034           break;
1035         case OPTION_WARN_COMMON:
1036           config.warn_common = true;
1037           break;
1038         case OPTION_WARN_CONSTRUCTORS:
1039           config.warn_constructors = true;
1040           break;
1041         case OPTION_WARN_FATAL:
1042           config.fatal_warnings = true;
1043           break;
1044         case OPTION_WARN_MULTIPLE_GP:
1045           config.warn_multiple_gp = true;
1046           break;
1047         case OPTION_WARN_ONCE:
1048           config.warn_once = true;
1049           break;
1050         case OPTION_WARN_SECTION_ALIGN:
1051           config.warn_section_align = true;
1052           break;
1053         case OPTION_WHOLE_ARCHIVE:
1054           whole_archive = true;
1055           break;
1056         case OPTION_WRAP:
1057           add_wrap (optarg);
1058           break;
1059         case OPTION_DISCARD_NONE:
1060           link_info.discard = discard_none;
1061           break;
1062         case 'X':
1063           link_info.discard = discard_l;
1064           break;
1065         case 'x':
1066           link_info.discard = discard_all;
1067           break;
1068         case 'Y':
1069           if (strncmp (optarg, "P,", 2) == 0)
1070             optarg += 2;
1071           default_dirlist = xstrdup (optarg);
1072           break;
1073         case 'y':
1074           add_ysym (optarg);
1075           break;
1076         case OPTION_SPLIT_BY_RELOC:
1077           if (optarg != NULL)
1078             config.split_by_reloc = strtoul (optarg, NULL, 0);
1079           else
1080             config.split_by_reloc = 32768;
1081           break;
1082         case OPTION_SPLIT_BY_FILE:
1083           if (optarg != NULL)
1084             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1085           else
1086             config.split_by_file = 1;
1087           break;
1088         case OPTION_CHECK_SECTIONS:
1089           command_line.check_section_addresses = true;
1090           break;
1091         case OPTION_NO_CHECK_SECTIONS:
1092           command_line.check_section_addresses = false;
1093           break;
1094         case '(':
1095           if (ingroup)
1096             {
1097               fprintf (stderr,
1098                        _("%s: may not nest groups (--help for usage)\n"),
1099                        program_name);
1100               xexit (1);
1101             }
1102           lang_enter_group ();
1103           ingroup = 1;
1104           break;
1105         case ')':
1106           if (! ingroup)
1107             {
1108               fprintf (stderr,
1109                        _("%s: group ended before it began (--help for usage)\n"),
1110                        program_name);
1111               xexit (1);
1112             }
1113           lang_leave_group ();
1114           ingroup = 0;
1115           break;
1116         case OPTION_MPC860C0:
1117           link_info.mpc860c0 = 20;      /* default value (in bytes) */
1118           if (optarg)
1119             {
1120               unsigned words;
1121
1122               words = is_num (optarg, 1, 10, 0);
1123               if (words == 0)
1124                 {
1125                   fprintf (stderr,
1126                            _("%s: Invalid argument to option \"mpc860c0\"\n"),
1127                            program_name);
1128                   xexit (1);
1129                 }
1130               link_info.mpc860c0 = words * 4;   /* convert words to bytes */
1131             }
1132           command_line.relax = true;
1133           break;
1134
1135         case OPTION_INIT:
1136           link_info.init_function = optarg;
1137           break;
1138
1139         case OPTION_FINI:
1140           link_info.fini_function = optarg;
1141           break;
1142         }
1143     }
1144
1145   if (ingroup)
1146     lang_leave_group ();
1147
1148   if (default_dirlist != NULL)
1149     set_default_dirlist (default_dirlist);
1150
1151 }
1152
1153 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1154    library search path.  */
1155
1156 static void
1157 set_default_dirlist (dirlist_ptr)
1158      char *dirlist_ptr;
1159 {
1160   char *p;
1161
1162   while (1)
1163     {
1164       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1165       if (p != NULL)
1166         *p = '\0';
1167       if (*dirlist_ptr != '\0')
1168         ldfile_add_library_path (dirlist_ptr, true);
1169       if (p == NULL)
1170         break;
1171       dirlist_ptr = p + 1;
1172     }
1173 }
1174
1175 static void
1176 set_section_start (sect, valstr)
1177      char *sect, *valstr;
1178 {
1179   const char *end;
1180   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1181   if (*end)
1182     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1183   lang_section_start (sect, exp_intop (val));
1184 }
1185 \f
1186 /* Print help messages for the options.  */
1187
1188 static void
1189 help ()
1190 {
1191   unsigned i;
1192   const char **targets, **pp;
1193
1194   printf (_("Usage: %s [options] file...\n"), program_name);
1195
1196   printf (_("Options:\n"));
1197   for (i = 0; i < OPTION_COUNT; i++)
1198     {
1199       if (ld_options[i].doc != NULL)
1200         {
1201           boolean comma;
1202           int len;
1203           unsigned j;
1204
1205           printf ("  ");
1206
1207           comma = false;
1208           len = 2;
1209
1210           j = i;
1211           do
1212             {
1213               if (ld_options[j].shortopt != '\0'
1214                   && ld_options[j].control != NO_HELP)
1215                 {
1216                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1217                   len += (comma ? 2 : 0) + 2;
1218                   if (ld_options[j].arg != NULL)
1219                     {
1220                       if (ld_options[j].opt.has_arg != optional_argument)
1221                         {
1222                           printf (" ");
1223                           ++len;
1224                         }
1225                       printf ("%s", _(ld_options[j].arg));
1226                       len += strlen (_(ld_options[j].arg));
1227                     }
1228                   comma = true;
1229                 }
1230               ++j;
1231             }
1232           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1233
1234           j = i;
1235           do
1236             {
1237               if (ld_options[j].opt.name != NULL
1238                   && ld_options[j].control != NO_HELP)
1239                 {
1240                   int two_dashes =
1241                     (ld_options[j].control == TWO_DASHES
1242                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1243
1244                   printf ("%s-%s%s",
1245                           comma ? ", " : "",
1246                           two_dashes ? "-" : "",
1247                           ld_options[j].opt.name);
1248                   len += ((comma ? 2 : 0)
1249                           + 1
1250                           + (two_dashes ? 1 : 0)
1251                           + strlen (ld_options[j].opt.name));
1252                   if (ld_options[j].arg != NULL)
1253                     {
1254                       printf (" %s", _(ld_options[j].arg));
1255                       len += 1 + strlen (_(ld_options[j].arg));
1256                     }
1257                   comma = true;
1258                 }
1259               ++j;
1260             }
1261           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1262
1263           if (len >= 30)
1264             {
1265               printf ("\n");
1266               len = 0;
1267             }
1268
1269           for (; len < 30; len++)
1270             putchar (' ');
1271
1272           printf ("%s\n", _(ld_options[i].doc));
1273         }
1274     }
1275
1276   /* Note: Various tools (such as libtool) depend upon the
1277      format of the listings below - do not change them.  */
1278   /* xgettext:c-format */
1279   printf (_("%s: supported targets:"), program_name);
1280   targets = bfd_target_list ();
1281   for (pp = targets; *pp != NULL; pp++)
1282     printf (" %s", *pp);
1283   free (targets);
1284   printf ("\n");
1285
1286   /* xgettext:c-format */
1287   printf (_("%s: supported emulations: "), program_name);
1288   ldemul_list_emulations (stdout);
1289   printf ("\n");
1290
1291   /* xgettext:c-format */
1292   printf (_("%s: emulation specific options:\n"), program_name);
1293   ldemul_list_emulation_options (stdout);
1294   printf ("\n");
1295
1296   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1297 }