ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001, 2002
   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 static int is_num PARAMS ((const char *, int, int, int));
  57 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
  58 static void set_section_start PARAMS ((char *sect, char *valstr));
  59 static void help PARAMS ((void));
  60
  61 /* Non-zero if we are processing a --defsym from the command line.  */
  62 int parsing_defsym = 0;
  63
  64 /* Codes used for the long options with no short synonyms.  150 isn't
  65    special; it's just an arbitrary non-ASCII char value.  */
  66
  67 #define OPTION_ASSERT                   150
  68 #define OPTION_CALL_SHARED              (OPTION_ASSERT + 1)
  69 #define OPTION_CREF                     (OPTION_CALL_SHARED + 1)
  70 #define OPTION_DEFSYM                   (OPTION_CREF + 1)
  71 #define OPTION_DEMANGLE                 (OPTION_DEFSYM + 1)
  72 #define OPTION_DYNAMIC_LINKER           (OPTION_DEMANGLE + 1)
  73 #define OPTION_EB                       (OPTION_DYNAMIC_LINKER + 1)
  74 #define OPTION_EL                       (OPTION_EB + 1)
  75 #define OPTION_EMBEDDED_RELOCS          (OPTION_EL + 1)
  76 #define OPTION_EXPORT_DYNAMIC           (OPTION_EMBEDDED_RELOCS + 1)
  77 #define OPTION_HELP                     (OPTION_EXPORT_DYNAMIC + 1)
  78 #define OPTION_IGNORE                   (OPTION_HELP + 1)
  79 #define OPTION_MAP                      (OPTION_IGNORE + 1)
  80 #define OPTION_NO_DEMANGLE              (OPTION_MAP + 1)
  81 #define OPTION_NO_KEEP_MEMORY           (OPTION_NO_DEMANGLE + 1)
  82 #define OPTION_NO_WARN_MISMATCH         (OPTION_NO_KEEP_MEMORY + 1)
  83 #define OPTION_NOINHIBIT_EXEC           (OPTION_NO_WARN_MISMATCH + 1)
  84 #define OPTION_NON_SHARED               (OPTION_NOINHIBIT_EXEC + 1)
  85 #define OPTION_NO_WHOLE_ARCHIVE         (OPTION_NON_SHARED + 1)
  86 #define OPTION_OFORMAT                  (OPTION_NO_WHOLE_ARCHIVE + 1)
  87 #define OPTION_RELAX                    (OPTION_OFORMAT + 1)
  88 #define OPTION_RETAIN_SYMBOLS_FILE      (OPTION_RELAX + 1)
  89 #define OPTION_RPATH                    (OPTION_RETAIN_SYMBOLS_FILE + 1)
  90 #define OPTION_RPATH_LINK               (OPTION_RPATH + 1)
  91 #define OPTION_SHARED                   (OPTION_RPATH_LINK + 1)
  92 #define OPTION_SONAME                   (OPTION_SHARED + 1)
  93 #define OPTION_SORT_COMMON              (OPTION_SONAME + 1)
  94 #define OPTION_STATS                    (OPTION_SORT_COMMON + 1)
  95 #define OPTION_SYMBOLIC                 (OPTION_STATS + 1)
  96 #define OPTION_TASK_LINK                (OPTION_SYMBOLIC + 1)
  97 #define OPTION_TBSS                     (OPTION_TASK_LINK + 1)
  98 #define OPTION_TDATA                    (OPTION_TBSS + 1)
  99 #define OPTION_TTEXT                    (OPTION_TDATA + 1)
 100 #define OPTION_TRADITIONAL_FORMAT       (OPTION_TTEXT + 1)
 101 #define OPTION_UR                       (OPTION_TRADITIONAL_FORMAT + 1)
 102 #define OPTION_VERBOSE                  (OPTION_UR + 1)
 103 #define OPTION_VERSION                  (OPTION_VERBOSE + 1)
 104 #define OPTION_VERSION_SCRIPT           (OPTION_VERSION + 1)
 105 #define OPTION_VERSION_EXPORTS_SECTION  (OPTION_VERSION_SCRIPT + 1)
 106 #define OPTION_WARN_COMMON              (OPTION_VERSION_EXPORTS_SECTION + 1)
 107 #define OPTION_WARN_CONSTRUCTORS        (OPTION_WARN_COMMON + 1)
 108 #define OPTION_WARN_FATAL               (OPTION_WARN_CONSTRUCTORS + 1)
 109 #define OPTION_WARN_MULTIPLE_GP         (OPTION_WARN_FATAL + 1)
 110 #define OPTION_WARN_ONCE                (OPTION_WARN_MULTIPLE_GP + 1)
 111 #define OPTION_WARN_SECTION_ALIGN       (OPTION_WARN_ONCE + 1)
 112 #define OPTION_SPLIT_BY_RELOC           (OPTION_WARN_SECTION_ALIGN + 1)
 113 #define OPTION_SPLIT_BY_FILE            (OPTION_SPLIT_BY_RELOC + 1)
 114 #define OPTION_WHOLE_ARCHIVE            (OPTION_SPLIT_BY_FILE + 1)
 115 #define OPTION_WRAP                     (OPTION_WHOLE_ARCHIVE + 1)
 116 #define OPTION_FORCE_EXE_SUFFIX         (OPTION_WRAP + 1)
 117 #define OPTION_GC_SECTIONS              (OPTION_FORCE_EXE_SUFFIX + 1)
 118 #define OPTION_NO_GC_SECTIONS           (OPTION_GC_SECTIONS + 1)
 119 #define OPTION_CHECK_SECTIONS           (OPTION_NO_GC_SECTIONS + 1)
 120 #define OPTION_NO_CHECK_SECTIONS        (OPTION_CHECK_SECTIONS + 1)
 121 #define OPTION_MPC860C0                 (OPTION_NO_CHECK_SECTIONS + 1)
 122 #define OPTION_NO_UNDEFINED             (OPTION_MPC860C0 + 1)
 123 #define OPTION_INIT                     (OPTION_NO_UNDEFINED + 1)
 124 #define OPTION_FINI                     (OPTION_INIT + 1)
 125 #define OPTION_SECTION_START            (OPTION_FINI + 1)
 126 #define OPTION_UNIQUE                   (OPTION_SECTION_START + 1)
 127 #define OPTION_TARGET_HELP              (OPTION_UNIQUE + 1)
 128 #define OPTION_ALLOW_SHLIB_UNDEFINED    (OPTION_TARGET_HELP + 1)
 129 #define OPTION_ALLOW_MULTIPLE_DEFINITION (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
 130 #define OPTION_DISCARD_NONE             (OPTION_ALLOW_MULTIPLE_DEFINITION + 1)
 131 #define OPTION_SPARE_DYNAMIC_TAGS       (OPTION_DISCARD_NONE + 1)
 132 #define OPTION_NO_DEFINE_COMMON         (OPTION_SPARE_DYNAMIC_TAGS + 1)
 133 #define OPTION_NOSTDLIB                 (OPTION_NO_DEFINE_COMMON + 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 PROGRAM as 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-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 314       '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 315   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 316       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 317   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 318       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 319   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 320      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 321   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 322      '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
 323   { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION},
 324      '\0', NULL, N_("Allow multiple definitions"), 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   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 334       '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH },
 335   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 336       '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
 337   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 338       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 339   { {"relax", no_argument, NULL, OPTION_RELAX},
 340       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 341   { {"retain-symbols-file", required_argument, NULL,
 342        OPTION_RETAIN_SYMBOLS_FILE},
 343       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 344   { {"rpath", required_argument, NULL, OPTION_RPATH},
 345       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 346   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 347       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 348   { {"shared", no_argument, NULL, OPTION_SHARED},
 349       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 350   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 351       '\0', NULL, NULL, ONE_DASH },
 352   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 353       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 354   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 355       '\0', NULL, NULL, NO_HELP },
 356   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 357       '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
 358   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 359       '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
 360   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 361       '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 362   { {"stats", no_argument, NULL, OPTION_STATS},
 363       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 364   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 365       '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 366   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 367       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 368   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 369       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 370   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 371       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 372   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 373       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 374   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 375       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 376   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 377       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 378   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 379       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 380   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 381       '\0', NULL, NULL, NO_HELP },
 382   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 383       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 384   { {"version-exports-section", required_argument, NULL,
 385      OPTION_VERSION_EXPORTS_SECTION },
 386     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 387     TWO_DASHES },
 388   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 389       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 390   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 391       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 392       TWO_DASHES },
 393   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 394       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 395   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 396       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 397   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 398       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 399       TWO_DASHES },
 400   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 401      '\0', NULL, N_("Treat warnings as errors"),
 402      TWO_DASHES },
 403   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 404       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 405   { {"wrap", required_argument, NULL, OPTION_WRAP},
 406       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 407   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 408       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 409 };
 410
 411 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 412
 413 /* Test STRING for containing a string of digits that form a number
 414    between MIN and MAX.  The return value is the number or ERR.  */
 415
 416 static int
 417 is_num (string, min, max, err)
 418      const char *string;
 419      int min;
 420      int max;
 421      int err;
 422 {
 423   int result = 0;
 424
 425   for (; *string; ++string)
 426     {
 427       if (! ISDIGIT (*string))
 428         {
 429           result = err;
 430           break;
 431         }
 432       result = result * 10 + (*string - '0');
 433     }
 434   if (result < min || result > max)
 435     result = err;
 436
 437   return result;
 438 }
 439
 440 void
 441 parse_args (argc, argv)
 442      unsigned argc;
 443      char **argv;
 444 {
 445   unsigned i;
 446   int is, il, irl;
 447   int ingroup = 0;
 448   char *default_dirlist = NULL;
 449   char shortopts[OPTION_COUNT * 3 + 2];
 450   struct option longopts[OPTION_COUNT + 1];
 451   struct option really_longopts[OPTION_COUNT + 1];
 452   int last_optind;
 453
 454   /* Starting the short option string with '-' is for programs that
 455      expect options and other ARGV-elements in any order and that care about
 456      the ordering of the two.  We describe each non-option ARGV-element
 457      as if it were the argument of an option with character code 1.  */
 458   shortopts[0] = '-';
 459   is = 1;
 460   il = 0;
 461   irl = 0;
 462   for (i = 0; i < OPTION_COUNT; i++)
 463     {
 464       if (ld_options[i].shortopt != '\0')
 465         {
 466           shortopts[is] = ld_options[i].shortopt;
 467           ++is;
 468           if (ld_options[i].opt.has_arg == required_argument
 469               || ld_options[i].opt.has_arg == optional_argument)
 470             {
 471               shortopts[is] = ':';
 472               ++is;
 473               if (ld_options[i].opt.has_arg == optional_argument)
 474                 {
 475                   shortopts[is] = ':';
 476                   ++is;
 477                 }
 478             }
 479         }
 480       if (ld_options[i].opt.name != NULL)
 481         {
 482           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 483             {
 484               really_longopts[irl] = ld_options[i].opt;
 485               ++irl;
 486             }
 487           else
 488             {
 489               longopts[il] = ld_options[i].opt;
 490               ++il;
 491             }
 492         }
 493     }
 494   shortopts[is] = '\0';
 495   longopts[il].name = NULL;
 496   really_longopts[irl].name = NULL;
 497
 498   /* The -G option is ambiguous on different platforms.  Sometimes it
 499      specifies the largest data size to put into the small data
 500      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 501      the first form takes an argument, while the second does not.
 502
 503      We need to permit the --shared form because on some platforms,
 504      such as Solaris, gcc -shared will pass -G to the linker.
 505
 506      To permit either usage, we look through the argument list.  If we
 507      find -G not followed by a number, we change it into --shared.
 508      This will work for most normal cases.  */
 509   for (i = 1; i < argc; i++)
 510     if (strcmp (argv[i], "-G") == 0
 511         && (i + 1 >= argc
 512             || ! ISDIGIT (argv[i + 1][0])))
 513       argv[i] = (char *) "--shared";
 514
 515   /* Because we permit long options to start with a single dash, and
 516      we have a --library option, and the -l option is conventionally
 517      used with an immediately following argument, we can have bad
 518      results if somebody tries to use -l with a library whose name
 519      happens to start with "ibrary", as in -li.  We avoid problems by
 520      simply turning -l into --library.  This means that users will
 521      have to use two dashes in order to use --library, which is OK
 522      since that's how it is documented.
 523
 524      FIXME: It's possible that this problem can arise for other short
 525      options as well, although the user does always have the recourse
 526      of adding a space between the option and the argument.  */
 527   for (i = 1; i < argc; i++)
 528     {
 529       if (argv[i][0] == '-'
 530           && argv[i][1] == 'l'
 531           && argv[i][2] != '\0')
 532         {
 533           char *n;
 534
 535           n = (char *) xmalloc (strlen (argv[i]) + 20);
 536           sprintf (n, "--library=%s", argv[i] + 2);
 537           argv[i] = n;
 538         }
 539     }
 540
 541   last_optind = -1;
 542   while (1)
 543     {
 544       int longind;
 545       int optc;
 546
 547       /* Using last_optind lets us avoid calling ldemul_parse_args
 548          multiple times on a single option, which would lead to
 549          confusion in the internal static variables maintained by
 550          getopt.  This could otherwise happen for an argument like
 551          -nx, in which the -n is parsed as a single option, and we
 552          loop around to pick up the -x.  */
 553       if (optind != last_optind)
 554         if (ldemul_parse_args (argc, argv))
 555           continue;
 556
 557       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 558          can indicate a long option.  */
 559       opterr = 0;
 560       last_optind = optind;
 561       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 562       if (optc == '?')
 563         {
 564           optind = last_optind;
 565           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 566         }
 567
 568       if (optc == -1)
 569         break;
 570
 571       switch (optc)
 572         {
 573         case '?':
 574           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 575         default:
 576           einfo (_("%P%F: use the --help option for usage information\n"));
 577
 578         case 1:                 /* File name.  */
 579           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 580                                (char *) NULL);
 581           break;
 582
 583         case OPTION_IGNORE:
 584           break;
 585         case 'a':
 586           /* For HP/UX compatibility.  Actually -a shared should mean
 587              ``use only shared libraries'' but, then, we don't
 588              currently support shared libraries on HP/UX anyhow.  */
 589           if (strcmp (optarg, "archive") == 0)
 590             config.dynamic_link = false;
 591           else if (strcmp (optarg, "shared") == 0
 592                    || strcmp (optarg, "default") == 0)
 593             config.dynamic_link = true;
 594           else
 595             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 596           break;
 597         case OPTION_ASSERT:
 598           /* FIXME: We just ignore these, but we should handle them.  */
 599           if (strcmp (optarg, "definitions") == 0)
 600             ;
 601           else if (strcmp (optarg, "nodefinitions") == 0)
 602             ;
 603           else if (strcmp (optarg, "nosymbolic") == 0)
 604             ;
 605           else if (strcmp (optarg, "pure-text") == 0)
 606             ;
 607           else
 608             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 609           break;
 610         case 'A':
 611           ldfile_add_arch (optarg);
 612           break;
 613         case 'b':
 614           lang_add_target (optarg);
 615           break;
 616         case 'c':
 617           ldfile_open_command_file (optarg);
 618           parser_input = input_mri_script;
 619           yyparse ();
 620           break;
 621         case OPTION_CALL_SHARED:
 622           config.dynamic_link = true;
 623           break;
 624         case OPTION_NON_SHARED:
 625           config.dynamic_link = false;
 626           break;
 627         case OPTION_CREF:
 628           command_line.cref = true;
 629           link_info.notice_all = true;
 630           break;
 631         case 'd':
 632           command_line.force_common_definition = true;
 633           break;
 634         case OPTION_DEFSYM:
 635           lex_string = optarg;
 636           lex_redirect (optarg);
 637           parser_input = input_defsym;
 638           parsing_defsym = 1;
 639           yyparse ();
 640           parsing_defsym = 0;
 641           lex_string = NULL;
 642           break;
 643         case OPTION_DEMANGLE:
 644           demangling = true;
 645           if (optarg != NULL)
 646             {
 647               enum demangling_styles style;
 648
 649               style = cplus_demangle_name_to_style (optarg);
 650               if (style == unknown_demangling)
 651                 einfo (_("%F%P: unknown demangling style `%s'"),
 652                        optarg);
 653
 654               cplus_demangle_set_style (style);
 655             }
 656           break;
 657         case 'I':               /* Used on Solaris.  */
 658         case OPTION_DYNAMIC_LINKER:
 659           command_line.interpreter = optarg;
 660           break;
 661         case OPTION_EB:
 662           command_line.endian = ENDIAN_BIG;
 663           break;
 664         case OPTION_EL:
 665           command_line.endian = ENDIAN_LITTLE;
 666           break;
 667         case OPTION_EMBEDDED_RELOCS:
 668           command_line.embedded_relocs = true;
 669           break;
 670         case OPTION_EXPORT_DYNAMIC:
 671         case 'E': /* HP/UX compatibility.  */
 672           link_info.export_dynamic = true;
 673           break;
 674         case 'e':
 675           lang_add_entry (optarg, true);
 676           break;
 677         case 'f':
 678           if (command_line.auxiliary_filters == NULL)
 679             {
 680               command_line.auxiliary_filters =
 681                 (char **) xmalloc (2 * sizeof (char *));
 682               command_line.auxiliary_filters[0] = optarg;
 683               command_line.auxiliary_filters[1] = NULL;
 684             }
 685           else
 686             {
 687               int c;
 688               char **p;
 689
 690               c = 0;
 691               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 692                 ++c;
 693               command_line.auxiliary_filters =
 694                 (char **) xrealloc (command_line.auxiliary_filters,
 695                                     (c + 2) * sizeof (char *));
 696               command_line.auxiliary_filters[c] = optarg;
 697               command_line.auxiliary_filters[c + 1] = NULL;
 698             }
 699           break;
 700         case 'F':
 701           command_line.filter_shlib = optarg;
 702           break;
 703         case OPTION_FORCE_EXE_SUFFIX:
 704           command_line.force_exe_suffix = true;
 705           break;
 706         case 'G':
 707           {
 708             char *end;
 709             g_switch_value = strtoul (optarg, &end, 0);
 710             if (*end)
 711               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 712           }
 713           break;
 714         case 'g':
 715           /* Ignore.  */
 716           break;
 717         case OPTION_GC_SECTIONS:
 718           command_line.gc_sections = true;
 719           break;
 720         case OPTION_HELP:
 721           help ();
 722           xexit (0);
 723           break;
 724         case 'L':
 725           ldfile_add_library_path (optarg, true);
 726           break;
 727         case 'l':
 728           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 729                                (char *) NULL);
 730           break;
 731         case 'M':
 732           config.map_filename = "-";
 733           break;
 734         case 'm':
 735           /* Ignore.  Was handled in a pre-parse.   */
 736           break;
 737         case OPTION_MAP:
 738           config.map_filename = optarg;
 739           break;
 740         case 'N':
 741           config.text_read_only = false;
 742           config.magic_demand_paged = false;
 743           config.dynamic_link = false;
 744           break;
 745         case 'n':
 746           config.magic_demand_paged = false;
 747           config.dynamic_link = false;
 748           break;
 749         case OPTION_NO_DEFINE_COMMON:
 750           command_line.inhibit_common_definition = true;
 751           break;
 752         case OPTION_NO_DEMANGLE:
 753           demangling = false;
 754           break;
 755         case OPTION_NO_GC_SECTIONS:
 756           command_line.gc_sections = false;
 757           break;
 758         case OPTION_NO_KEEP_MEMORY:
 759           link_info.keep_memory = false;
 760           break;
 761         case OPTION_NO_UNDEFINED:
 762           link_info.no_undefined = true;
 763           break;
 764         case OPTION_ALLOW_SHLIB_UNDEFINED:
 765           link_info.allow_shlib_undefined = true;
 766           break;
 767         case OPTION_ALLOW_MULTIPLE_DEFINITION:
 768           link_info.allow_multiple_definition = true;
 769           break;
 770         case OPTION_NO_WARN_MISMATCH:
 771           command_line.warn_mismatch = false;
 772           break;
 773         case OPTION_NOINHIBIT_EXEC:
 774           force_make_executable = true;
 775           break;
 776         case OPTION_NOSTDLIB:
 777           config.only_cmd_line_lib_dirs = true;
 778           break;
 779         case OPTION_NO_WHOLE_ARCHIVE:
 780           whole_archive = false;
 781           break;
 782         case 'O':
 783           /* FIXME "-O<non-digits> <value>" used to set the address of
 784              section <non-digits>.  Was this for compatibility with
 785              something, or can we create a new option to do that
 786              (with a syntax similar to -defsym)?
 787              getopt can't handle two args to an option without kludges.  */
 788
 789           /* Enable optimizations of output files.  */
 790           link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
 791           break;
 792         case 'o':
 793           lang_add_output (optarg, 0);
 794           break;
 795         case OPTION_OFORMAT:
 796           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 797           break;
 798         case 'q':
 799           link_info.emitrelocations = true;
 800           break;
 801         case 'i':
 802         case 'r':
 803           if (optind == last_optind)
 804             /* This can happen if the user put "-rpath,a" on the command
 805                line.  (Or something similar.  The comma is important).
 806                Getopt becomes confused and thinks that this is a -r option
 807                but it cannot parse the text after the -r so it refuses to
 808                increment the optind counter.  Detect this case and issue
 809                an error message here.  We cannot just make this a warning,
 810                increment optind, and continue because getopt is too confused
 811                and will seg-fault the next time around.  */
 812             einfo(_("%P%F: bad -rpath option\n"));
 813
 814           link_info.relocateable = true;
 815           config.build_constructors = false;
 816           config.magic_demand_paged = false;
 817           config.text_read_only = false;
 818           config.dynamic_link = false;
 819           break;
 820         case 'R':
 821           /* The GNU linker traditionally uses -R to mean to include
 822              only the symbols from a file.  The Solaris linker uses -R
 823              to set the path used by the runtime linker to find
 824              libraries.  This is the GNU linker -rpath argument.  We
 825              try to support both simultaneously by checking the file
 826              named.  If it is a directory, rather than a regular file,
 827              we assume -rpath was meant.  */
 828           {
 829             struct stat s;
 830
 831             if (stat (optarg, &s) >= 0
 832                 && ! S_ISDIR (s.st_mode))
 833               {
 834                 lang_add_input_file (optarg,
 835                                      lang_input_file_is_symbols_only_enum,
 836                                      (char *) NULL);
 837                 break;
 838               }
 839           }
 840           /* Fall through.  */
 841         case OPTION_RPATH:
 842           if (command_line.rpath == NULL)
 843             command_line.rpath = xstrdup (optarg);
 844           else
 845             {
 846               size_t rpath_len = strlen (command_line.rpath);
 847               size_t optarg_len = strlen (optarg);
 848               char *buf;
 849               char *cp = command_line.rpath;
 850
 851               /* First see whether OPTARG is already in the path.  */
 852               do
 853                 {
 854                   size_t idx = 0;
 855
 856                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 857                     ++idx;
 858                   if (optarg[idx] == '\0'
 859                       && (cp[idx] == '\0' || cp[idx] == ':'))
 860                     /* We found it.  */
 861                     break;
 862
 863                   /* Not yet found.  */
 864                   cp = strchr (cp, ':');
 865                   if (cp != NULL)
 866                     ++cp;
 867                 }
 868               while (cp != NULL);
 869
 870               if (cp == NULL)
 871                 {
 872                   buf = xmalloc (rpath_len + optarg_len + 2);
 873                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 874                   free (command_line.rpath);
 875                   command_line.rpath = buf;
 876                 }
 877             }
 878           break;
 879         case OPTION_RPATH_LINK:
 880           if (command_line.rpath_link == NULL)
 881             command_line.rpath_link = xstrdup (optarg);
 882           else
 883             {
 884               char *buf;
 885
 886               buf = xmalloc (strlen (command_line.rpath_link)
 887                              + strlen (optarg)
 888                              + 2);
 889               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 890               free (command_line.rpath_link);
 891               command_line.rpath_link = buf;
 892             }
 893           break;
 894         case OPTION_RELAX:
 895           command_line.relax = true;
 896           break;
 897         case OPTION_RETAIN_SYMBOLS_FILE:
 898           add_keepsyms_file (optarg);
 899           break;
 900         case 'S':
 901           link_info.strip = strip_debugger;
 902           break;
 903         case 's':
 904           link_info.strip = strip_all;
 905           break;
 906         case OPTION_SHARED:
 907           if (config.has_shared)
 908             link_info.shared = true;
 909           else
 910             einfo (_("%P%F: -shared not supported\n"));
 911           break;
 912         case 'h':               /* Used on Solaris.  */
 913         case OPTION_SONAME:
 914           command_line.soname = optarg;
 915           break;
 916         case OPTION_SORT_COMMON:
 917           config.sort_common = true;
 918           break;
 919         case OPTION_STATS:
 920           config.stats = true;
 921           break;
 922         case OPTION_SYMBOLIC:
 923           link_info.symbolic = true;
 924           break;
 925         case 't':
 926           trace_files = true;
 927           break;
 928         case 'T':
 929           ldfile_open_command_file (optarg);
 930           parser_input = input_script;
 931           yyparse ();
 932           break;
 933         case OPTION_SECTION_START:
 934           {
 935             char *optarg2;
 936             char *sec_name;
 937             int len;
 938
 939             /* Check for <something>=<somthing>...  */
 940             optarg2 = strchr (optarg, '=');
 941             if (optarg2 == NULL)
 942               einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
 943
 944             optarg2++;
 945
 946             /* So far so good.  Are all the args present?  */
 947             if ((*optarg == '\0') || (*optarg2 == '\0'))
 948               einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
 949
 950             /* We must copy the section name as set_section_start
 951                doesn't do it for us.  */
 952             len = optarg2 - optarg;
 953             sec_name = xmalloc (len);
 954             memcpy (sec_name, optarg, len - 1);
 955             sec_name[len - 1] = 0;
 956
 957             /* Then set it...  */
 958             set_section_start (sec_name, optarg2);
 959           }
 960           break;
 961         case OPTION_TARGET_HELP:
 962           /* Mention any target specific options.  */
 963           ldemul_list_emulation_options (stdout);
 964           exit (0);
 965         case OPTION_TBSS:
 966           set_section_start (".bss", optarg);
 967           break;
 968         case OPTION_TDATA:
 969           set_section_start (".data", optarg);
 970           break;
 971         case OPTION_TTEXT:
 972           set_section_start (".text", optarg);
 973           break;
 974         case OPTION_TRADITIONAL_FORMAT:
 975           link_info.traditional_format = true;
 976           break;
 977         case OPTION_TASK_LINK:
 978           link_info.task_link = true;
 979           /* Fall through - do an implied -r option.  */
 980         case OPTION_UR:
 981           link_info.relocateable = true;
 982           config.build_constructors = true;
 983           config.magic_demand_paged = false;
 984           config.text_read_only = false;
 985           config.dynamic_link = false;
 986           break;
 987         case 'u':
 988           ldlang_add_undef (optarg);
 989           break;
 990         case OPTION_UNIQUE:
 991           if (optarg != NULL)
 992             lang_add_unique (optarg);
 993           else
 994             config.unique_orphan_sections = true;
 995           break;
 996         case OPTION_VERBOSE:
 997           ldversion (1);
 998           version_printed = true;
 999           trace_file_tries = true;
1000           break;
1001         case 'v':
1002           ldversion (0);
1003           version_printed = true;
1004           break;
1005         case 'V':
1006           ldversion (1);
1007           version_printed = true;
1008           break;
1009         case OPTION_VERSION:
1010           ldversion (2);
1011           xexit (0);
1012           break;
1013         case OPTION_VERSION_SCRIPT:
1014           /* This option indicates a small script that only specifies
1015              version information.  Read it, but don't assume that
1016              we've seen a linker script.  */
1017           {
1018             FILE *hold_script_handle;
1019
1020             hold_script_handle = saved_script_handle;
1021             ldfile_open_command_file (optarg);
1022             saved_script_handle = hold_script_handle;
1023             parser_input = input_version_script;
1024             yyparse ();
1025           }
1026           break;
1027         case OPTION_VERSION_EXPORTS_SECTION:
1028           /* This option records a version symbol to be applied to the
1029              symbols listed for export to be found in the object files
1030              .exports sections.  */
1031           command_line.version_exports_section = optarg;
1032           break;
1033         case OPTION_WARN_COMMON:
1034           config.warn_common = true;
1035           break;
1036         case OPTION_WARN_CONSTRUCTORS:
1037           config.warn_constructors = true;
1038           break;
1039         case OPTION_WARN_FATAL:
1040           config.fatal_warnings = true;
1041           break;
1042         case OPTION_WARN_MULTIPLE_GP:
1043           config.warn_multiple_gp = true;
1044           break;
1045         case OPTION_WARN_ONCE:
1046           config.warn_once = true;
1047           break;
1048         case OPTION_WARN_SECTION_ALIGN:
1049           config.warn_section_align = true;
1050           break;
1051         case OPTION_WHOLE_ARCHIVE:
1052           whole_archive = true;
1053           break;
1054         case OPTION_WRAP:
1055           add_wrap (optarg);
1056           break;
1057         case OPTION_DISCARD_NONE:
1058           link_info.discard = discard_none;
1059           break;
1060         case 'X':
1061           link_info.discard = discard_l;
1062           break;
1063         case 'x':
1064           link_info.discard = discard_all;
1065           break;
1066         case 'Y':
1067           if (strncmp (optarg, "P,", 2) == 0)
1068             optarg += 2;
1069           default_dirlist = xstrdup (optarg);
1070           break;
1071         case 'y':
1072           add_ysym (optarg);
1073           break;
1074         case OPTION_SPARE_DYNAMIC_TAGS:
1075           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1076           break;
1077         case OPTION_SPLIT_BY_RELOC:
1078           if (optarg != NULL)
1079             config.split_by_reloc = strtoul (optarg, NULL, 0);
1080           else
1081             config.split_by_reloc = 32768;
1082           break;
1083         case OPTION_SPLIT_BY_FILE:
1084           if (optarg != NULL)
1085             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1086           else
1087             config.split_by_file = 1;
1088           break;
1089         case OPTION_CHECK_SECTIONS:
1090           command_line.check_section_addresses = true;
1091           break;
1092         case OPTION_NO_CHECK_SECTIONS:
1093           command_line.check_section_addresses = false;
1094           break;
1095         case '(':
1096           if (ingroup)
1097             einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1098
1099           lang_enter_group ();
1100           ingroup = 1;
1101           break;
1102         case ')':
1103           if (! ingroup)
1104             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1105
1106           lang_leave_group ();
1107           ingroup = 0;
1108           break;
1109         case OPTION_MPC860C0:
1110           /* Default value (in bytes).  */
1111           link_info.mpc860c0 = 20;
1112           if (optarg)
1113             {
1114               unsigned words;
1115
1116               words = is_num (optarg, 1, 10, 0);
1117               if (words == 0)
1118                 einfo (_("%P%F: invalid argument to option \"mpc860c0\"\n"));
1119
1120               /* Convert words to bytes.  */
1121               link_info.mpc860c0 = words * 4;
1122             }
1123           command_line.relax = true;
1124           break;
1125
1126         case OPTION_INIT:
1127           link_info.init_function = optarg;
1128           break;
1129
1130         case OPTION_FINI:
1131           link_info.fini_function = optarg;
1132           break;
1133         }
1134     }
1135
1136   if (ingroup)
1137     lang_leave_group ();
1138
1139   if (default_dirlist != NULL)
1140     set_default_dirlist (default_dirlist);
1141
1142 }
1143
1144 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1145    library search path.  */
1146
1147 static void
1148 set_default_dirlist (dirlist_ptr)
1149      char *dirlist_ptr;
1150 {
1151   char *p;
1152
1153   while (1)
1154     {
1155       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1156       if (p != NULL)
1157         *p = '\0';
1158       if (*dirlist_ptr != '\0')
1159         ldfile_add_library_path (dirlist_ptr, true);
1160       if (p == NULL)
1161         break;
1162       dirlist_ptr = p + 1;
1163     }
1164 }
1165
1166 static void
1167 set_section_start (sect, valstr)
1168      char *sect, *valstr;
1169 {
1170   const char *end;
1171   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1172   if (*end)
1173     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1174   lang_section_start (sect, exp_intop (val));
1175 }
1176 \f
1177 /* Print help messages for the options.  */
1178
1179 static void
1180 help ()
1181 {
1182   unsigned i;
1183   const char **targets, **pp;
1184
1185   printf (_("Usage: %s [options] file...\n"), program_name);
1186
1187   printf (_("Options:\n"));
1188   for (i = 0; i < OPTION_COUNT; i++)
1189     {
1190       if (ld_options[i].doc != NULL)
1191         {
1192           boolean comma;
1193           int len;
1194           unsigned j;
1195
1196           printf ("  ");
1197
1198           comma = false;
1199           len = 2;
1200
1201           j = i;
1202           do
1203             {
1204               if (ld_options[j].shortopt != '\0'
1205                   && ld_options[j].control != NO_HELP)
1206                 {
1207                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1208                   len += (comma ? 2 : 0) + 2;
1209                   if (ld_options[j].arg != NULL)
1210                     {
1211                       if (ld_options[j].opt.has_arg != optional_argument)
1212                         {
1213                           printf (" ");
1214                           ++len;
1215                         }
1216                       printf ("%s", _(ld_options[j].arg));
1217                       len += strlen (_(ld_options[j].arg));
1218                     }
1219                   comma = true;
1220                 }
1221               ++j;
1222             }
1223           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1224
1225           j = i;
1226           do
1227             {
1228               if (ld_options[j].opt.name != NULL
1229                   && ld_options[j].control != NO_HELP)
1230                 {
1231                   int two_dashes =
1232                     (ld_options[j].control == TWO_DASHES
1233                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1234
1235                   printf ("%s-%s%s",
1236                           comma ? ", " : "",
1237                           two_dashes ? "-" : "",
1238                           ld_options[j].opt.name);
1239                   len += ((comma ? 2 : 0)
1240                           + 1
1241                           + (two_dashes ? 1 : 0)
1242                           + strlen (ld_options[j].opt.name));
1243                   if (ld_options[j].arg != NULL)
1244                     {
1245                       printf (" %s", _(ld_options[j].arg));
1246                       len += 1 + strlen (_(ld_options[j].arg));
1247                     }
1248                   comma = true;
1249                 }
1250               ++j;
1251             }
1252           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1253
1254           if (len >= 30)
1255             {
1256               printf ("\n");
1257               len = 0;
1258             }
1259
1260           for (; len < 30; len++)
1261             putchar (' ');
1262
1263           printf ("%s\n", _(ld_options[i].doc));
1264         }
1265     }
1266
1267   /* Note: Various tools (such as libtool) depend upon the
1268      format of the listings below - do not change them.  */
1269   /* xgettext:c-format */
1270   printf (_("%s: supported targets:"), program_name);
1271   targets = bfd_target_list ();
1272   for (pp = targets; *pp != NULL; pp++)
1273     printf (" %s", *pp);
1274   free (targets);
1275   printf ("\n");
1276
1277   /* xgettext:c-format */
1278   printf (_("%s: supported emulations: "), program_name);
1279   ldemul_list_emulations (stdout);
1280   printf ("\n");
1281
1282   /* xgettext:c-format */
1283   printf (_("%s: emulation specific options:\n"), program_name);
1284   ldemul_list_emulation_options (stdout);
1285   printf ("\n");
1286
1287   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1288 }