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 "safe-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 #define OPTION_SPARE_DYNAMIC_TAGS       (OPTION_DISCARD_NONE + 1)
 135 #define OPTION_NO_DEFINE_COMMON         (OPTION_SPARE_DYNAMIC_TAGS + 1)
 136
 137 /* The long options.  This structure is used for both the option
 138    parsing and the help text.  */
 139
 140 struct ld_option
 141 {
 142   /* The long option information.  */
 143   struct option opt;
 144   /* The short option with the same meaning ('\0' if none).  */
 145   char shortopt;
 146   /* The name of the argument (NULL if none).  */
 147   const char *arg;
 148   /* The documentation string.  If this is NULL, this is a synonym for
 149      the previous option.  */
 150   const char *doc;
 151   enum {
 152     /* Use one dash before long option name.  */
 153     ONE_DASH,
 154     /* Use two dashes before long option name.  */
 155     TWO_DASHES,
 156     /* Only accept two dashes before the long option name.
 157        This is an overloading of the use of this enum, since originally it
 158        was only intended to tell the --help display function how to display
 159        the long option name.  This feature was added in order to resolve
 160        the confusion about the -omagic command line switch.  Is it setting
 161        the output file name to "magic" or is it setting the NMAGIC flag on
 162        the output ?  It has been decided that it is setting the output file
 163        name, and that if you want to set the NMAGIC flag you should use -N
 164        or --omagic.  */
 165     EXACTLY_TWO_DASHES,
 166     /* Don't mention this option in --help output.  */
 167     NO_HELP
 168   } control;
 169 };
 170
 171 static const struct ld_option ld_options[] =
 172 {
 173   { {NULL, required_argument, NULL, '\0'},
 174       'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 175       ONE_DASH },
 176   { {"architecture", required_argument, NULL, 'A'},
 177       'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 178   { {"format", required_argument, NULL, 'b'},
 179       'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
 180   { {"mri-script", required_argument, NULL, 'c'},
 181       'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 182   { {"dc", no_argument, NULL, 'd'},
 183       'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 184   { {"dp", no_argument, NULL, 'd'},
 185       '\0', NULL, NULL, ONE_DASH },
 186   { {"entry", required_argument, NULL, 'e'},
 187       'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 188   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 189       'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 190   { {"EB", no_argument, NULL, OPTION_EB},
 191       '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 192   { {"EL", no_argument, NULL, OPTION_EL},
 193       '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 194   { {"auxiliary", required_argument, NULL, 'f'},
 195       'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 196       TWO_DASHES },
 197   { {"filter", required_argument, NULL, 'F'},
 198       'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
 199   { {NULL, no_argument, NULL, '\0'},
 200       'g', NULL, N_("Ignored"), ONE_DASH },
 201   { {"gpsize", required_argument, NULL, 'G'},
 202       'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 203       TWO_DASHES },
 204   { {"soname", required_argument, NULL, OPTION_SONAME},
 205       'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 206   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 207       'I', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
 208   { {"library", required_argument, NULL, 'l'},
 209       'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 210   { {"library-path", required_argument, NULL, 'L'},
 211       'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
 212   { {NULL, required_argument, NULL, '\0'},
 213       'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 214   { {"print-map", no_argument, NULL, 'M'},
 215       'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 216   { {"nmagic", no_argument, NULL, 'n'},
 217       'n', NULL, N_("Do not page align data"), TWO_DASHES },
 218   { {"omagic", no_argument, NULL, 'N'},
 219       'N', NULL, N_("Do not page align data, do not make text readonly"),
 220       EXACTLY_TWO_DASHES },
 221   { {"output", required_argument, NULL, 'o'},
 222       'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 223   { {NULL, required_argument, NULL, '\0'},
 224       'O', NULL, N_("Optimize output file"), ONE_DASH },
 225   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 226       '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 227   { {"emit-relocs", no_argument, NULL, 'q'},
 228       'q', NULL, "Generate relocations in final output", TWO_DASHES },
 229   { {"relocateable", no_argument, NULL, 'r'},
 230       'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
 231   { {NULL, no_argument, NULL, '\0'},
 232       'i', NULL, NULL, ONE_DASH },
 233   { {"just-symbols", required_argument, NULL, 'R'},
 234       'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 235       TWO_DASHES },
 236   { {"strip-all", no_argument, NULL, 's'},
 237       's', NULL, N_("Strip all symbols"), TWO_DASHES },
 238   { {"strip-debug", no_argument, NULL, 'S'},
 239       'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 240   { {"trace", no_argument, NULL, 't'},
 241       't', NULL, N_("Trace file opens"), TWO_DASHES },
 242   { {"script", required_argument, NULL, 'T'},
 243       'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 244   { {"undefined", required_argument, NULL, 'u'},
 245       'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
 246   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 247       '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 248   { {"Ur", no_argument, NULL, OPTION_UR},
 249       '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 250   { {"version", no_argument, NULL, OPTION_VERSION},
 251       'v', NULL, N_("Print version information"), TWO_DASHES },
 252   { {NULL, no_argument, NULL, '\0'},
 253       'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 254   { {"discard-all", no_argument, NULL, 'x'},
 255       'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 256   { {"discard-locals", no_argument, NULL, 'X'},
 257       'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 258   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 259       '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 260   { {"trace-symbol", required_argument, NULL, 'y'},
 261       'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 262   { {NULL, required_argument, NULL, '\0'},
 263       'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
 264   { {"start-group", no_argument, NULL, '('},
 265       '(', NULL, N_("Start a group"), TWO_DASHES },
 266   { {"end-group", no_argument, NULL, ')'},
 267       ')', NULL, N_("End a group"), TWO_DASHES },
 268   { {"assert", required_argument, NULL, OPTION_ASSERT},
 269       '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 270   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 271       '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 272   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 273       '\0', NULL, NULL, ONE_DASH },
 274   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 275       '\0', NULL, NULL, ONE_DASH },
 276   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 277       '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 278   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 279       '\0', NULL, NULL, ONE_DASH },
 280   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 281       '\0', NULL, NULL, ONE_DASH },
 282   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 283       '\0', NULL, NULL, ONE_DASH },
 284   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 285       '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 286   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 287       '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
 288   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 289       '\0', NULL, N_("Do not check section addresses for overlaps"),
 290       TWO_DASHES },
 291   { {"cref", no_argument, NULL, OPTION_CREF},
 292       '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 293   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 294       '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 295   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 296       '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
 297   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 298       '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 299   { {"fini", required_argument, NULL, OPTION_FINI},
 300      '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 301   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 302       '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 303   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 304       '\0', NULL, N_("Remove unused sections (on some targets)"),
 305       TWO_DASHES },
 306   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 307       '\0', NULL, N_("Don't remove unused sections (default)"),
 308       TWO_DASHES },
 309   { {"help", no_argument, NULL, OPTION_HELP},
 310       '\0', NULL, N_("Print option help"), TWO_DASHES },
 311   { {"init", required_argument, NULL, OPTION_INIT},
 312      '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 313   { {"Map", required_argument, NULL, OPTION_MAP},
 314       '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 315   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 316       '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 317   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 318       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 319   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 320       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 321   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 322      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 323   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 324      '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
 325   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 326       '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 327   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 328       '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 329   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 330       '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
 331   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 332       '\0', NULL, NULL, NO_HELP },
 333   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 334       '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
 335   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 336       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 337   { {"relax", no_argument, NULL, OPTION_RELAX},
 338       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 339   { {"retain-symbols-file", required_argument, NULL,
 340        OPTION_RETAIN_SYMBOLS_FILE},
 341       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 342   { {"rpath", required_argument, NULL, OPTION_RPATH},
 343       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 344   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 345       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 346   { {"shared", no_argument, NULL, OPTION_SHARED},
 347       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 348   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 349       '\0', NULL, NULL, ONE_DASH },
 350   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 351       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 352   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 353       '\0', NULL, NULL, NO_HELP },
 354   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 355       '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
 356   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 357       '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
 358   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 359       '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 360   { {"stats", no_argument, NULL, OPTION_STATS},
 361       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 362   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 363       '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 364   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 365       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 366   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 367       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 368   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 369       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 370   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 371       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 372   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 373       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 374   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 375       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 376   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 377       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 378   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 379       '\0', NULL, NULL, NO_HELP },
 380   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 381       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 382   { {"version-exports-section", required_argument, NULL,
 383      OPTION_VERSION_EXPORTS_SECTION },
 384     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 385     TWO_DASHES },
 386   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 387       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 388   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 389       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 390       TWO_DASHES },
 391   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 392       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 393   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 394       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 395   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 396       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 397       TWO_DASHES },
 398   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 399      '\0', NULL, N_("Treat warnings as errors"),
 400      TWO_DASHES },
 401   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 402       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 403   { {"wrap", required_argument, NULL, OPTION_WRAP},
 404       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 405   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 406       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 407 };
 408
 409 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 410
 411 /* Test STRING for containing a string of digits that form a number
 412    between MIN and MAX.  The return value is the number or ERR.  */
 413
 414 static int
 415 is_num (string, min, max, err)
 416      const char *string;
 417      int min;
 418      int max;
 419      int err;
 420 {
 421   int result = 0;
 422
 423   for (; *string; ++string)
 424     {
 425       if (! ISDIGIT (*string))
 426         {
 427           result = err;
 428           break;
 429         }
 430       result = result * 10 + (*string - '0');
 431     }
 432   if (result < min || result > max)
 433     result = err;
 434
 435   return result;
 436 }
 437
 438 void
 439 parse_args (argc, argv)
 440      unsigned argc;
 441      char **argv;
 442 {
 443   unsigned i;
 444   int is, il, irl;
 445   int ingroup = 0;
 446   char *default_dirlist = NULL;
 447   char shortopts[OPTION_COUNT * 3 + 2];
 448   struct option longopts[OPTION_COUNT + 1];
 449   struct option really_longopts[OPTION_COUNT + 1];
 450   int last_optind;
 451
 452   /* Starting the short option string with '-' is for programs that
 453      expect options and other ARGV-elements in any order and that care about
 454      the ordering of the two.  We describe each non-option ARGV-element
 455      as if it were the argument of an option with character code 1.  */
 456   shortopts[0] = '-';
 457   is = 1;
 458   il = 0;
 459   irl = 0;
 460   for (i = 0; i < OPTION_COUNT; i++)
 461     {
 462       if (ld_options[i].shortopt != '\0')
 463         {
 464           shortopts[is] = ld_options[i].shortopt;
 465           ++is;
 466           if (ld_options[i].opt.has_arg == required_argument
 467               || ld_options[i].opt.has_arg == optional_argument)
 468             {
 469               shortopts[is] = ':';
 470               ++is;
 471               if (ld_options[i].opt.has_arg == optional_argument)
 472                 {
 473                   shortopts[is] = ':';
 474                   ++is;
 475                 }
 476             }
 477         }
 478       if (ld_options[i].opt.name != NULL)
 479         {
 480           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 481             {
 482               really_longopts[irl] = ld_options[i].opt;
 483               ++irl;
 484             }
 485           else
 486             {
 487               longopts[il] = ld_options[i].opt;
 488               ++il;
 489             }
 490         }
 491     }
 492   shortopts[is] = '\0';
 493   longopts[il].name = NULL;
 494   really_longopts[irl].name = NULL;
 495
 496   /* The -G option is ambiguous on different platforms.  Sometimes it
 497      specifies the largest data size to put into the small data
 498      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 499      the first form takes an argument, while the second does not.
 500
 501      We need to permit the --shared form because on some platforms,
 502      such as Solaris, gcc -shared will pass -G to the linker.
 503
 504      To permit either usage, we look through the argument list.  If we
 505      find -G not followed by a number, we change it into --shared.
 506      This will work for most normal cases.  */
 507   for (i = 1; i < argc; i++)
 508     if (strcmp (argv[i], "-G") == 0
 509         && (i + 1 >= argc
 510             || ! ISDIGIT (argv[i + 1][0])))
 511       argv[i] = (char *) "--shared";
 512
 513   /* Because we permit long options to start with a single dash, and
 514      we have a --library option, and the -l option is conventionally
 515      used with an immediately following argument, we can have bad
 516      results if somebody tries to use -l with a library whose name
 517      happens to start with "ibrary", as in -li.  We avoid problems by
 518      simply turning -l into --library.  This means that users will
 519      have to use two dashes in order to use --library, which is OK
 520      since that's how it is documented.
 521
 522      FIXME: It's possible that this problem can arise for other short
 523      options as well, although the user does always have the recourse
 524      of adding a space between the option and the argument.  */
 525   for (i = 1; i < argc; i++)
 526     {
 527       if (argv[i][0] == '-'
 528           && argv[i][1] == 'l'
 529           && argv[i][2] != '\0')
 530         {
 531           char *n;
 532
 533           n = (char *) xmalloc (strlen (argv[i]) + 20);
 534           sprintf (n, "--library=%s", argv[i] + 2);
 535           argv[i] = n;
 536         }
 537     }
 538
 539   last_optind = -1;
 540   while (1)
 541     {
 542       int longind, errind;
 543       int optc;
 544
 545       /* Using last_optind lets us avoid calling ldemul_parse_args
 546          multiple times on a single option, which would lead to
 547          confusion in the internal static variables maintained by
 548          getopt.  This could otherwise happen for an argument like
 549          -nx, in which the -n is parsed as a single option, and we
 550          loop around to pick up the -x.  */
 551       if (optind != last_optind)
 552         {
 553           if (ldemul_parse_args (argc, argv))
 554             continue;
 555           last_optind = optind;
 556         }
 557
 558       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 559          can indicate a long option.  */
 560       opterr = 0;
 561       errind = optind;
 562       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 563       if (optc == '?')
 564         {
 565           --optind;
 566           optc = getopt_long (argc, argv, shortopts, really_longopts, &longind);
 567         }
 568
 569       if (optc == -1)
 570         break;
 571
 572       switch (optc)
 573         {
 574         case '?':
 575           fprintf (stderr, _("%s: unrecognized option '%s'\n"),
 576                    program_name, argv[errind]);
 577         default:
 578           fprintf (stderr,
 579                    _("%s: use the --help option for usage information\n"),
 580                    program_name);
 581           xexit (1);
 582         case 1:                 /* File name.  */
 583           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 584                                (char *) NULL);
 585           break;
 586
 587         case OPTION_IGNORE:
 588           break;
 589         case 'a':
 590           /* For HP/UX compatibility.  Actually -a shared should mean
 591              ``use only shared libraries'' but, then, we don't
 592              currently support shared libraries on HP/UX anyhow.  */
 593           if (strcmp (optarg, "archive") == 0)
 594             config.dynamic_link = false;
 595           else if (strcmp (optarg, "shared") == 0
 596                    || strcmp (optarg, "default") == 0)
 597             config.dynamic_link = true;
 598           else
 599             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 600           break;
 601         case OPTION_ASSERT:
 602           /* FIXME: We just ignore these, but we should handle them.  */
 603           if (strcmp (optarg, "definitions") == 0)
 604             ;
 605           else if (strcmp (optarg, "nodefinitions") == 0)
 606             ;
 607           else if (strcmp (optarg, "nosymbolic") == 0)
 608             ;
 609           else if (strcmp (optarg, "pure-text") == 0)
 610             ;
 611           else
 612             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 613           break;
 614         case 'A':
 615           ldfile_add_arch (optarg);
 616           break;
 617         case 'b':
 618           lang_add_target (optarg);
 619           break;
 620         case 'c':
 621           ldfile_open_command_file (optarg);
 622           parser_input = input_mri_script;
 623           yyparse ();
 624           break;
 625         case OPTION_CALL_SHARED:
 626           config.dynamic_link = true;
 627           break;
 628         case OPTION_NON_SHARED:
 629           config.dynamic_link = false;
 630           break;
 631         case OPTION_CREF:
 632           command_line.cref = true;
 633           link_info.notice_all = true;
 634           break;
 635         case 'd':
 636           command_line.force_common_definition = true;
 637           break;
 638         case OPTION_DEFSYM:
 639           lex_string = optarg;
 640           lex_redirect (optarg);
 641           parser_input = input_defsym;
 642           parsing_defsym = 1;
 643           yyparse ();
 644           parsing_defsym = 0;
 645           lex_string = NULL;
 646           break;
 647         case OPTION_DEMANGLE:
 648           demangling = true;
 649           if (optarg != NULL)
 650             {
 651               enum demangling_styles style;
 652
 653               style = cplus_demangle_name_to_style (optarg);
 654               if (style == unknown_demangling)
 655                 einfo (_("%F%P: unknown demangling style `%s'"),
 656                        optarg);
 657
 658               cplus_demangle_set_style (style);
 659             }
 660           break;
 661         case 'I':               /* Used on Solaris.  */
 662         case OPTION_DYNAMIC_LINKER:
 663           command_line.interpreter = optarg;
 664           break;
 665         case OPTION_EB:
 666           command_line.endian = ENDIAN_BIG;
 667           break;
 668         case OPTION_EL:
 669           command_line.endian = ENDIAN_LITTLE;
 670           break;
 671         case OPTION_EMBEDDED_RELOCS:
 672           command_line.embedded_relocs = true;
 673           break;
 674         case OPTION_EXPORT_DYNAMIC:
 675         case 'E': /* HP/UX compatibility.  */
 676           link_info.export_dynamic = true;
 677           break;
 678         case 'e':
 679           lang_add_entry (optarg, true);
 680           break;
 681         case 'f':
 682           if (command_line.auxiliary_filters == NULL)
 683             {
 684               command_line.auxiliary_filters =
 685                 (char **) xmalloc (2 * sizeof (char *));
 686               command_line.auxiliary_filters[0] = optarg;
 687               command_line.auxiliary_filters[1] = NULL;
 688             }
 689           else
 690             {
 691               int c;
 692               char **p;
 693
 694               c = 0;
 695               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 696                 ++c;
 697               command_line.auxiliary_filters =
 698                 (char **) xrealloc (command_line.auxiliary_filters,
 699                                     (c + 2) * sizeof (char *));
 700               command_line.auxiliary_filters[c] = optarg;
 701               command_line.auxiliary_filters[c + 1] = NULL;
 702             }
 703           break;
 704         case 'F':
 705           command_line.filter_shlib = optarg;
 706           break;
 707         case OPTION_FORCE_EXE_SUFFIX:
 708           command_line.force_exe_suffix = true;
 709           break;
 710         case 'G':
 711           {
 712             char *end;
 713             g_switch_value = strtoul (optarg, &end, 0);
 714             if (*end)
 715               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 716           }
 717           break;
 718         case 'g':
 719           /* Ignore.  */
 720           break;
 721         case OPTION_GC_SECTIONS:
 722           command_line.gc_sections = true;
 723           break;
 724         case OPTION_HELP:
 725           help ();
 726           xexit (0);
 727           break;
 728         case 'L':
 729           ldfile_add_library_path (optarg, true);
 730           break;
 731         case 'l':
 732           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 733                                (char *) NULL);
 734           break;
 735         case 'M':
 736           config.map_filename = "-";
 737           break;
 738         case 'm':
 739           /* Ignore.  Was handled in a pre-parse.   */
 740           break;
 741         case OPTION_MAP:
 742           config.map_filename = optarg;
 743           break;
 744         case 'N':
 745           config.text_read_only = false;
 746           config.magic_demand_paged = false;
 747           config.dynamic_link = false;
 748           break;
 749         case 'n':
 750           config.magic_demand_paged = false;
 751           config.dynamic_link = false;
 752           break;
 753         case OPTION_NO_DEFINE_COMMON:
 754           command_line.inhibit_common_definition = true;
 755           break;
 756         case OPTION_NO_DEMANGLE:
 757           demangling = false;
 758           break;
 759         case OPTION_NO_GC_SECTIONS:
 760           command_line.gc_sections = false;
 761           break;
 762         case OPTION_NO_KEEP_MEMORY:
 763           link_info.keep_memory = false;
 764           break;
 765         case OPTION_NO_UNDEFINED:
 766           link_info.no_undefined = true;
 767           break;
 768         case OPTION_ALLOW_SHLIB_UNDEFINED:
 769           link_info.allow_shlib_undefined = true;
 770           break;
 771         case OPTION_NO_WARN_MISMATCH:
 772           command_line.warn_mismatch = false;
 773           break;
 774         case OPTION_NOINHIBIT_EXEC:
 775           force_make_executable = true;
 776           break;
 777         case OPTION_NO_WHOLE_ARCHIVE:
 778           whole_archive = false;
 779           break;
 780         case 'O':
 781           /* FIXME "-O<non-digits> <value>" used to set the address of
 782              section <non-digits>.  Was this for compatibility with
 783              something, or can we create a new option to do that
 784              (with a syntax similar to -defsym)?
 785              getopt can't handle two args to an option without kludges.  */
 786
 787           /* Enable optimizations of output files.  */
 788           link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
 789           break;
 790         case 'o':
 791           lang_add_output (optarg, 0);
 792           break;
 793         case OPTION_OFORMAT:
 794           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 795           break;
 796         case 'q':
 797           link_info.emitrelocations = true;
 798           break;
 799         case 'i':
 800         case 'r':
 801           link_info.relocateable = true;
 802           config.build_constructors = false;
 803           config.magic_demand_paged = false;
 804           config.text_read_only = false;
 805           config.dynamic_link = false;
 806           break;
 807         case 'R':
 808           /* The GNU linker traditionally uses -R to mean to include
 809              only the symbols from a file.  The Solaris linker uses -R
 810              to set the path used by the runtime linker to find
 811              libraries.  This is the GNU linker -rpath argument.  We
 812              try to support both simultaneously by checking the file
 813              named.  If it is a directory, rather than a regular file,
 814              we assume -rpath was meant.  */
 815           {
 816             struct stat s;
 817
 818             if (stat (optarg, &s) >= 0
 819                 && ! S_ISDIR (s.st_mode))
 820               {
 821                 lang_add_input_file (optarg,
 822                                      lang_input_file_is_symbols_only_enum,
 823                                      (char *) NULL);
 824                 break;
 825               }
 826           }
 827           /* Fall through.  */
 828         case OPTION_RPATH:
 829           if (command_line.rpath == NULL)
 830             command_line.rpath = xstrdup (optarg);
 831           else
 832             {
 833               size_t rpath_len = strlen (command_line.rpath);
 834               size_t optarg_len = strlen (optarg);
 835               char *buf;
 836               char *cp = command_line.rpath;
 837
 838               /* First see whether OPTARG is already in the path.  */
 839               do
 840                 {
 841                   size_t idx = 0;
 842                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 843                     ++idx;
 844                   if (optarg[idx] == '\0'
 845                       && (cp[idx] == '\0' || cp[idx] == ':'))
 846                     /* We found it.  */
 847                     break;
 848
 849                   /* Not yet found.  */
 850                   cp = strchr (cp, ':');
 851                   if (cp != NULL)
 852                     ++cp;
 853                 }
 854               while (cp != NULL);
 855
 856               if (cp == NULL)
 857                 {
 858                   buf = xmalloc (rpath_len + optarg_len + 2);
 859                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 860                   free (command_line.rpath);
 861                   command_line.rpath = buf;
 862                 }
 863             }
 864           break;
 865         case OPTION_RPATH_LINK:
 866           if (command_line.rpath_link == NULL)
 867             command_line.rpath_link = xstrdup (optarg);
 868           else
 869             {
 870               char *buf;
 871
 872               buf = xmalloc (strlen (command_line.rpath_link)
 873                              + strlen (optarg)
 874                              + 2);
 875               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 876               free (command_line.rpath_link);
 877               command_line.rpath_link = buf;
 878             }
 879           break;
 880         case OPTION_RELAX:
 881           command_line.relax = true;
 882           break;
 883         case OPTION_RETAIN_SYMBOLS_FILE:
 884           add_keepsyms_file (optarg);
 885           break;
 886         case 'S':
 887           link_info.strip = strip_debugger;
 888           break;
 889         case 's':
 890           link_info.strip = strip_all;
 891           break;
 892         case OPTION_SHARED:
 893           if (config.has_shared)
 894             link_info.shared = true;
 895           else
 896             einfo (_("%P%F: -shared not supported\n"));
 897           break;
 898         case 'h':               /* Used on Solaris.  */
 899         case OPTION_SONAME:
 900           command_line.soname = optarg;
 901           break;
 902         case OPTION_SORT_COMMON:
 903           config.sort_common = true;
 904           break;
 905         case OPTION_STATS:
 906           config.stats = true;
 907           break;
 908         case OPTION_SYMBOLIC:
 909           link_info.symbolic = true;
 910           break;
 911         case 't':
 912           trace_files = true;
 913           break;
 914         case 'T':
 915           ldfile_open_command_file (optarg);
 916           parser_input = input_script;
 917           yyparse ();
 918           break;
 919         case OPTION_SECTION_START:
 920           {
 921             char *optarg2;
 922             char *sec_name;
 923             int len;
 924
 925             /* Check for <something>=<somthing>...  */
 926             optarg2 = strchr (optarg, '=');
 927             if (optarg2 == NULL)
 928               {
 929                 fprintf (stderr,
 930                          _("%s: Invalid argument to option \"--section-start\"\n"),
 931                          program_name);
 932                 xexit (1);
 933               }
 934
 935             optarg2++;
 936
 937             /* So far so good.  Are all the args present?  */
 938             if ((*optarg == '\0') || (*optarg2 == '\0'))
 939               {
 940                 fprintf (stderr,
 941                          _("%s: Missing argument(s) to option \"--section-start\"\n"),
 942                          program_name);
 943                 xexit (1);
 944               }
 945
 946             /* We must copy the section name as set_section_start
 947                doesn't do it for us.  */
 948             len = optarg2 - optarg;
 949             sec_name = xmalloc (len);
 950             memcpy (sec_name, optarg, len - 1);
 951             sec_name[len - 1] = 0;
 952
 953             /* Then set it...  */
 954             set_section_start (sec_name, optarg2);
 955           }
 956           break;
 957         case OPTION_TARGET_HELP:
 958           /* Mention any target specific options.  */
 959           ldemul_list_emulation_options (stdout);
 960           exit (0);
 961         case OPTION_TBSS:
 962           set_section_start (".bss", optarg);
 963           break;
 964         case OPTION_TDATA:
 965           set_section_start (".data", optarg);
 966           break;
 967         case OPTION_TTEXT:
 968           set_section_start (".text", optarg);
 969           break;
 970         case OPTION_TRADITIONAL_FORMAT:
 971           link_info.traditional_format = true;
 972           break;
 973         case OPTION_TASK_LINK:
 974           link_info.task_link = true;
 975           /* Fall through - do an implied -r option.  */
 976         case OPTION_UR:
 977           link_info.relocateable = true;
 978           config.build_constructors = true;
 979           config.magic_demand_paged = false;
 980           config.text_read_only = false;
 981           config.dynamic_link = false;
 982           break;
 983         case 'u':
 984           ldlang_add_undef (optarg);
 985           break;
 986         case OPTION_UNIQUE:
 987           if (optarg != NULL)
 988             lang_add_unique (optarg);
 989           else
 990             config.unique_orphan_sections = true;
 991           break;
 992         case OPTION_VERBOSE:
 993           ldversion (1);
 994           version_printed = true;
 995           trace_file_tries = true;
 996           break;
 997         case 'v':
 998           ldversion (0);
 999           version_printed = true;
1000           break;
1001         case 'V':
1002           ldversion (1);
1003           version_printed = true;
1004           break;
1005         case OPTION_VERSION:
1006           /* This output is intended to follow the GNU standards document.  */
1007           printf ("GNU ld %s\n", ld_program_version);
1008           printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
1009           printf (_("\
1010 This program is free software; you may redistribute it under the terms of\n\
1011 the GNU General Public License.  This program has absolutely no warranty.\n"));
1012           {
1013             ld_emulation_xfer_type **ptr = ld_emulations;
1014
1015             printf (_("  Supported emulations:\n"));
1016             while (*ptr)
1017               {
1018                 printf ("   %s\n", (*ptr)->emulation_name);
1019                 ptr++;
1020               }
1021           }
1022           xexit (0);
1023           break;
1024         case OPTION_VERSION_SCRIPT:
1025           /* This option indicates a small script that only specifies
1026              version information.  Read it, but don't assume that
1027              we've seen a linker script.  */
1028           {
1029             FILE * hold_script_handle;
1030
1031             hold_script_handle = saved_script_handle;
1032             ldfile_open_command_file (optarg);
1033             saved_script_handle = hold_script_handle;
1034             parser_input = input_version_script;
1035             yyparse ();
1036           }
1037           break;
1038         case OPTION_VERSION_EXPORTS_SECTION:
1039           /* This option records a version symbol to be applied to the
1040              symbols listed for export to be found in the object files
1041              .exports sections.  */
1042           command_line.version_exports_section = optarg;
1043           break;
1044         case OPTION_WARN_COMMON:
1045           config.warn_common = true;
1046           break;
1047         case OPTION_WARN_CONSTRUCTORS:
1048           config.warn_constructors = true;
1049           break;
1050         case OPTION_WARN_FATAL:
1051           config.fatal_warnings = true;
1052           break;
1053         case OPTION_WARN_MULTIPLE_GP:
1054           config.warn_multiple_gp = true;
1055           break;
1056         case OPTION_WARN_ONCE:
1057           config.warn_once = true;
1058           break;
1059         case OPTION_WARN_SECTION_ALIGN:
1060           config.warn_section_align = true;
1061           break;
1062         case OPTION_WHOLE_ARCHIVE:
1063           whole_archive = true;
1064           break;
1065         case OPTION_WRAP:
1066           add_wrap (optarg);
1067           break;
1068         case OPTION_DISCARD_NONE:
1069           link_info.discard = discard_none;
1070           break;
1071         case 'X':
1072           link_info.discard = discard_l;
1073           break;
1074         case 'x':
1075           link_info.discard = discard_all;
1076           break;
1077         case 'Y':
1078           if (strncmp (optarg, "P,", 2) == 0)
1079             optarg += 2;
1080           default_dirlist = xstrdup (optarg);
1081           break;
1082         case 'y':
1083           add_ysym (optarg);
1084           break;
1085         case OPTION_SPARE_DYNAMIC_TAGS:
1086           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1087           break;
1088         case OPTION_SPLIT_BY_RELOC:
1089           if (optarg != NULL)
1090             config.split_by_reloc = strtoul (optarg, NULL, 0);
1091           else
1092             config.split_by_reloc = 32768;
1093           break;
1094         case OPTION_SPLIT_BY_FILE:
1095           if (optarg != NULL)
1096             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1097           else
1098             config.split_by_file = 1;
1099           break;
1100         case OPTION_CHECK_SECTIONS:
1101           command_line.check_section_addresses = true;
1102           break;
1103         case OPTION_NO_CHECK_SECTIONS:
1104           command_line.check_section_addresses = false;
1105           break;
1106         case '(':
1107           if (ingroup)
1108             {
1109               fprintf (stderr,
1110                        _("%s: may not nest groups (--help for usage)\n"),
1111                        program_name);
1112               xexit (1);
1113             }
1114           lang_enter_group ();
1115           ingroup = 1;
1116           break;
1117         case ')':
1118           if (! ingroup)
1119             {
1120               fprintf (stderr,
1121                        _("%s: group ended before it began (--help for usage)\n"),
1122                        program_name);
1123               xexit (1);
1124             }
1125           lang_leave_group ();
1126           ingroup = 0;
1127           break;
1128         case OPTION_MPC860C0:
1129           link_info.mpc860c0 = 20;      /* default value (in bytes) */
1130           if (optarg)
1131             {
1132               unsigned words;
1133
1134               words = is_num (optarg, 1, 10, 0);
1135               if (words == 0)
1136                 {
1137                   fprintf (stderr,
1138                            _("%s: Invalid argument to option \"mpc860c0\"\n"),
1139                            program_name);
1140                   xexit (1);
1141                 }
1142               link_info.mpc860c0 = words * 4;   /* convert words to bytes */
1143             }
1144           command_line.relax = true;
1145           break;
1146
1147         case OPTION_INIT:
1148           link_info.init_function = optarg;
1149           break;
1150
1151         case OPTION_FINI:
1152           link_info.fini_function = optarg;
1153           break;
1154         }
1155     }
1156
1157   if (ingroup)
1158     lang_leave_group ();
1159
1160   if (default_dirlist != NULL)
1161     set_default_dirlist (default_dirlist);
1162
1163 }
1164
1165 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1166    library search path.  */
1167
1168 static void
1169 set_default_dirlist (dirlist_ptr)
1170      char *dirlist_ptr;
1171 {
1172   char *p;
1173
1174   while (1)
1175     {
1176       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1177       if (p != NULL)
1178         *p = '\0';
1179       if (*dirlist_ptr != '\0')
1180         ldfile_add_library_path (dirlist_ptr, true);
1181       if (p == NULL)
1182         break;
1183       dirlist_ptr = p + 1;
1184     }
1185 }
1186
1187 static void
1188 set_section_start (sect, valstr)
1189      char *sect, *valstr;
1190 {
1191   const char *end;
1192   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1193   if (*end)
1194     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1195   lang_section_start (sect, exp_intop (val));
1196 }
1197 \f
1198 /* Print help messages for the options.  */
1199
1200 static void
1201 help ()
1202 {
1203   unsigned i;
1204   const char **targets, **pp;
1205
1206   printf (_("Usage: %s [options] file...\n"), program_name);
1207
1208   printf (_("Options:\n"));
1209   for (i = 0; i < OPTION_COUNT; i++)
1210     {
1211       if (ld_options[i].doc != NULL)
1212         {
1213           boolean comma;
1214           int len;
1215           unsigned j;
1216
1217           printf ("  ");
1218
1219           comma = false;
1220           len = 2;
1221
1222           j = i;
1223           do
1224             {
1225               if (ld_options[j].shortopt != '\0'
1226                   && ld_options[j].control != NO_HELP)
1227                 {
1228                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1229                   len += (comma ? 2 : 0) + 2;
1230                   if (ld_options[j].arg != NULL)
1231                     {
1232                       if (ld_options[j].opt.has_arg != optional_argument)
1233                         {
1234                           printf (" ");
1235                           ++len;
1236                         }
1237                       printf ("%s", _(ld_options[j].arg));
1238                       len += strlen (_(ld_options[j].arg));
1239                     }
1240                   comma = true;
1241                 }
1242               ++j;
1243             }
1244           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1245
1246           j = i;
1247           do
1248             {
1249               if (ld_options[j].opt.name != NULL
1250                   && ld_options[j].control != NO_HELP)
1251                 {
1252                   int two_dashes =
1253                     (ld_options[j].control == TWO_DASHES
1254                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1255
1256                   printf ("%s-%s%s",
1257                           comma ? ", " : "",
1258                           two_dashes ? "-" : "",
1259                           ld_options[j].opt.name);
1260                   len += ((comma ? 2 : 0)
1261                           + 1
1262                           + (two_dashes ? 1 : 0)
1263                           + strlen (ld_options[j].opt.name));
1264                   if (ld_options[j].arg != NULL)
1265                     {
1266                       printf (" %s", _(ld_options[j].arg));
1267                       len += 1 + strlen (_(ld_options[j].arg));
1268                     }
1269                   comma = true;
1270                 }
1271               ++j;
1272             }
1273           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1274
1275           if (len >= 30)
1276             {
1277               printf ("\n");
1278               len = 0;
1279             }
1280
1281           for (; len < 30; len++)
1282             putchar (' ');
1283
1284           printf ("%s\n", _(ld_options[i].doc));
1285         }
1286     }
1287
1288   /* Note: Various tools (such as libtool) depend upon the
1289      format of the listings below - do not change them.  */
1290   /* xgettext:c-format */
1291   printf (_("%s: supported targets:"), program_name);
1292   targets = bfd_target_list ();
1293   for (pp = targets; *pp != NULL; pp++)
1294     printf (" %s", *pp);
1295   free (targets);
1296   printf ("\n");
1297
1298   /* xgettext:c-format */
1299   printf (_("%s: supported emulations: "), program_name);
1300   ldemul_list_emulations (stdout);
1301   printf ("\n");
1302
1303   /* xgettext:c-format */
1304   printf (_("%s: emulation specific options:\n"), program_name);
1305   ldemul_list_emulation_options (stdout);
1306   printf ("\n");
1307
1308   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1309 }