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 *));
  58 static void set_section_start PARAMS ((char *, char *));
  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_NO_UNDEFINED_VERSION     (OPTION_ALLOW_MULTIPLE_DEFINITION + 1)
 131 #define OPTION_DISCARD_NONE             (OPTION_NO_UNDEFINED_VERSION + 1)
 132 #define OPTION_SPARE_DYNAMIC_TAGS       (OPTION_DISCARD_NONE + 1)
 133 #define OPTION_NO_DEFINE_COMMON         (OPTION_SPARE_DYNAMIC_TAGS + 1)
 134 #define OPTION_NOSTDLIB                 (OPTION_NO_DEFINE_COMMON + 1)
 135 #define OPTION_NO_OMAGIC                (OPTION_NOSTDLIB + 1)
 136 #define OPTION_STRIP_DISCARDED          (OPTION_NO_OMAGIC + 1)
 137 #define OPTION_NO_STRIP_DISCARDED       (OPTION_STRIP_DISCARDED + 1)
 138 #define OPTION_ACCEPT_UNKNOWN_INPUT_ARCH    (OPTION_NO_STRIP_DISCARDED + 1)
 139 #define OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH (OPTION_ACCEPT_UNKNOWN_INPUT_ARCH + 1)
 140
 141 /* The long options.  This structure is used for both the option
 142    parsing and the help text.  */
 143
 144 struct ld_option
 145 {
 146   /* The long option information.  */
 147   struct option opt;
 148   /* The short option with the same meaning ('\0' if none).  */
 149   char shortopt;
 150   /* The name of the argument (NULL if none).  */
 151   const char *arg;
 152   /* The documentation string.  If this is NULL, this is a synonym for
 153      the previous option.  */
 154   const char *doc;
 155   enum {
 156     /* Use one dash before long option name.  */
 157     ONE_DASH,
 158     /* Use two dashes before long option name.  */
 159     TWO_DASHES,
 160     /* Only accept two dashes before the long option name.
 161        This is an overloading of the use of this enum, since originally it
 162        was only intended to tell the --help display function how to display
 163        the long option name.  This feature was added in order to resolve
 164        the confusion about the -omagic command line switch.  Is it setting
 165        the output file name to "magic" or is it setting the NMAGIC flag on
 166        the output ?  It has been decided that it is setting the output file
 167        name, and that if you want to set the NMAGIC flag you should use -N
 168        or --omagic.  */
 169     EXACTLY_TWO_DASHES,
 170     /* Don't mention this option in --help output.  */
 171     NO_HELP
 172   } control;
 173 };
 174
 175 static const struct ld_option ld_options[] =
 176 {
 177   { {NULL, required_argument, NULL, '\0'},
 178       'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 179       ONE_DASH },
 180   { {"architecture", required_argument, NULL, 'A'},
 181       'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 182   { {"format", required_argument, NULL, 'b'},
 183       'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
 184   { {"mri-script", required_argument, NULL, 'c'},
 185       'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 186   { {"dc", no_argument, NULL, 'd'},
 187       'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 188   { {"dp", no_argument, NULL, 'd'},
 189       '\0', NULL, NULL, ONE_DASH },
 190   { {"entry", required_argument, NULL, 'e'},
 191       'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 192   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 193       'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 194   { {"EB", no_argument, NULL, OPTION_EB},
 195       '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 196   { {"EL", no_argument, NULL, OPTION_EL},
 197       '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 198   { {"auxiliary", required_argument, NULL, 'f'},
 199       'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 200       TWO_DASHES },
 201   { {"filter", required_argument, NULL, 'F'},
 202       'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
 203   { {NULL, no_argument, NULL, '\0'},
 204       'g', NULL, N_("Ignored"), ONE_DASH },
 205   { {"gpsize", required_argument, NULL, 'G'},
 206       'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 207       TWO_DASHES },
 208   { {"soname", required_argument, NULL, OPTION_SONAME},
 209       'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 210   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 211       'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES },
 212   { {"library", required_argument, NULL, 'l'},
 213       'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 214   { {"library-path", required_argument, NULL, 'L'},
 215       'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
 216   { {NULL, required_argument, NULL, '\0'},
 217       'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 218   { {"print-map", no_argument, NULL, 'M'},
 219       'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 220   { {"nmagic", no_argument, NULL, 'n'},
 221       'n', NULL, N_("Do not page align data"), TWO_DASHES },
 222   { {"omagic", no_argument, NULL, 'N'},
 223       'N', NULL, N_("Do not page align data, do not make text readonly"),
 224       EXACTLY_TWO_DASHES },
 225   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 226       '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES },
 227   { {"output", required_argument, NULL, 'o'},
 228       'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 229   { {NULL, required_argument, NULL, '\0'},
 230       'O', NULL, N_("Optimize output file"), ONE_DASH },
 231   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 232       '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 233   { {"emit-relocs", no_argument, NULL, 'q'},
 234       'q', NULL, "Generate relocations in final output", TWO_DASHES },
 235   { {"relocateable", no_argument, NULL, 'r'},
 236       'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
 237   { {NULL, no_argument, NULL, '\0'},
 238       'i', NULL, NULL, ONE_DASH },
 239   { {"just-symbols", required_argument, NULL, 'R'},
 240       'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 241       TWO_DASHES },
 242   { {"strip-all", no_argument, NULL, 's'},
 243       's', NULL, N_("Strip all symbols"), TWO_DASHES },
 244   { {"strip-debug", no_argument, NULL, 'S'},
 245       'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 246   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 247       '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 248   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 249       '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 250   { {"trace", no_argument, NULL, 't'},
 251       't', NULL, N_("Trace file opens"), TWO_DASHES },
 252   { {"script", required_argument, NULL, 'T'},
 253       'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 254   { {"undefined", required_argument, NULL, 'u'},
 255       'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
 256   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 257       '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 258   { {"Ur", no_argument, NULL, OPTION_UR},
 259       '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 260   { {"version", no_argument, NULL, OPTION_VERSION},
 261       'v', NULL, N_("Print version information"), TWO_DASHES },
 262   { {NULL, no_argument, NULL, '\0'},
 263       'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 264   { {"discard-all", no_argument, NULL, 'x'},
 265       'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 266   { {"discard-locals", no_argument, NULL, 'X'},
 267       'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 268   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 269       '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 270   { {"trace-symbol", required_argument, NULL, 'y'},
 271       'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 272   { {NULL, required_argument, NULL, '\0'},
 273       'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
 274   { {"start-group", no_argument, NULL, '('},
 275       '(', NULL, N_("Start a group"), TWO_DASHES },
 276   { {"end-group", no_argument, NULL, ')'},
 277       ')', NULL, N_("End a group"), TWO_DASHES },
 278   { {"accept-unknown-input-arch", no_argument, NULL, OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 279     '\0', NULL, N_("Accept input files whose architecture cannot be determined"), TWO_DASHES },
 280   { {"no-accept-unknown-input-arch", no_argument, NULL, OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 281     '\0', NULL, N_("Reject input files whose architecture is unknown"), TWO_DASHES },
 282   { {"assert", required_argument, NULL, OPTION_ASSERT},
 283       '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 284   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 285       '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 286   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 287       '\0', NULL, NULL, ONE_DASH },
 288   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 289       '\0', NULL, NULL, ONE_DASH },
 290   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 291       '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 292   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 293       '\0', NULL, NULL, ONE_DASH },
 294   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 295       '\0', NULL, NULL, ONE_DASH },
 296   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 297       '\0', NULL, NULL, ONE_DASH },
 298   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 299       '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 300   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 301       '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
 302   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 303       '\0', NULL, N_("Do not check section addresses for overlaps"),
 304       TWO_DASHES },
 305   { {"cref", no_argument, NULL, OPTION_CREF},
 306       '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 307   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 308       '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 309   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 310       '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
 311   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 312       '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 313   { {"fini", required_argument, NULL, OPTION_FINI},
 314      '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 315   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 316       '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 317   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 318       '\0', NULL, N_("Remove unused sections (on some targets)"),
 319       TWO_DASHES },
 320   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 321       '\0', NULL, N_("Don't remove unused sections (default)"),
 322       TWO_DASHES },
 323   { {"help", no_argument, NULL, OPTION_HELP},
 324       '\0', NULL, N_("Print option help"), TWO_DASHES },
 325   { {"init", required_argument, NULL, OPTION_INIT},
 326      '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 327   { {"Map", required_argument, NULL, OPTION_MAP},
 328       '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 329   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 330       '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 331   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 332       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 333   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 334       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 335   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 336      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 337   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 338      '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
 339   { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION},
 340      '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 341   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 342      '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 343   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 344       '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 345   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 346       '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 347   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 348       '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
 349   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 350       '\0', NULL, NULL, NO_HELP },
 351   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 352       '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH },
 353   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 354       '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
 355   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 356       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 357   { {"relax", no_argument, NULL, OPTION_RELAX},
 358       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 359   { {"retain-symbols-file", required_argument, NULL,
 360        OPTION_RETAIN_SYMBOLS_FILE},
 361       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 362   { {"rpath", required_argument, NULL, OPTION_RPATH},
 363       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 364   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 365       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 366   { {"shared", no_argument, NULL, OPTION_SHARED},
 367       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 368   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 369       '\0', NULL, NULL, ONE_DASH },
 370   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 371       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 372   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 373       '\0', NULL, NULL, NO_HELP },
 374   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 375       '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
 376   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 377       '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
 378   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 379       '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 380   { {"stats", no_argument, NULL, OPTION_STATS},
 381       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 382   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 383       '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 384   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 385       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 386   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 387       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 388   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 389       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 390   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 391       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 392   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 393       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 394   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 395       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 396   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 397       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 398   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 399       '\0', NULL, NULL, NO_HELP },
 400   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 401       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 402   { {"version-exports-section", required_argument, NULL,
 403      OPTION_VERSION_EXPORTS_SECTION },
 404     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 405     TWO_DASHES },
 406   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 407       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 408   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 409       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 410       TWO_DASHES },
 411   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 412       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 413   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 414       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 415   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 416       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 417       TWO_DASHES },
 418   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 419      '\0', NULL, N_("Treat warnings as errors"),
 420      TWO_DASHES },
 421   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 422       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 423   { {"wrap", required_argument, NULL, OPTION_WRAP},
 424       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 425   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 426       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 427 };
 428
 429 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 430
 431 /* Test STRING for containing a string of digits that form a number
 432    between MIN and MAX.  The return value is the number or ERR.  */
 433
 434 static int
 435 is_num (string, min, max, err)
 436      const char *string;
 437      int min;
 438      int max;
 439      int err;
 440 {
 441   int result = 0;
 442
 443   for (; *string; ++string)
 444     {
 445       if (! ISDIGIT (*string))
 446         {
 447           result = err;
 448           break;
 449         }
 450       result = result * 10 + (*string - '0');
 451     }
 452   if (result < min || result > max)
 453     result = err;
 454
 455   return result;
 456 }
 457
 458 void
 459 parse_args (argc, argv)
 460      unsigned argc;
 461      char **argv;
 462 {
 463   unsigned i;
 464   int is, il, irl;
 465   int ingroup = 0;
 466   char *default_dirlist = NULL;
 467   char shortopts[OPTION_COUNT * 3 + 2];
 468   struct option longopts[OPTION_COUNT + 1];
 469   struct option really_longopts[OPTION_COUNT + 1];
 470   int last_optind;
 471
 472   /* Starting the short option string with '-' is for programs that
 473      expect options and other ARGV-elements in any order and that care about
 474      the ordering of the two.  We describe each non-option ARGV-element
 475      as if it were the argument of an option with character code 1.  */
 476   shortopts[0] = '-';
 477   is = 1;
 478   il = 0;
 479   irl = 0;
 480   for (i = 0; i < OPTION_COUNT; i++)
 481     {
 482       if (ld_options[i].shortopt != '\0')
 483         {
 484           shortopts[is] = ld_options[i].shortopt;
 485           ++is;
 486           if (ld_options[i].opt.has_arg == required_argument
 487               || ld_options[i].opt.has_arg == optional_argument)
 488             {
 489               shortopts[is] = ':';
 490               ++is;
 491               if (ld_options[i].opt.has_arg == optional_argument)
 492                 {
 493                   shortopts[is] = ':';
 494                   ++is;
 495                 }
 496             }
 497         }
 498       if (ld_options[i].opt.name != NULL)
 499         {
 500           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 501             {
 502               really_longopts[irl] = ld_options[i].opt;
 503               ++irl;
 504             }
 505           else
 506             {
 507               longopts[il] = ld_options[i].opt;
 508               ++il;
 509             }
 510         }
 511     }
 512   shortopts[is] = '\0';
 513   longopts[il].name = NULL;
 514   really_longopts[irl].name = NULL;
 515
 516   /* The -G option is ambiguous on different platforms.  Sometimes it
 517      specifies the largest data size to put into the small data
 518      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 519      the first form takes an argument, while the second does not.
 520
 521      We need to permit the --shared form because on some platforms,
 522      such as Solaris, gcc -shared will pass -G to the linker.
 523
 524      To permit either usage, we look through the argument list.  If we
 525      find -G not followed by a number, we change it into --shared.
 526      This will work for most normal cases.  */
 527   for (i = 1; i < argc; i++)
 528     if (strcmp (argv[i], "-G") == 0
 529         && (i + 1 >= argc
 530             || ! ISDIGIT (argv[i + 1][0])))
 531       argv[i] = (char *) "--shared";
 532
 533   /* Because we permit long options to start with a single dash, and
 534      we have a --library option, and the -l option is conventionally
 535      used with an immediately following argument, we can have bad
 536      results if somebody tries to use -l with a library whose name
 537      happens to start with "ibrary", as in -li.  We avoid problems by
 538      simply turning -l into --library.  This means that users will
 539      have to use two dashes in order to use --library, which is OK
 540      since that's how it is documented.
 541
 542      FIXME: It's possible that this problem can arise for other short
 543      options as well, although the user does always have the recourse
 544      of adding a space between the option and the argument.  */
 545   for (i = 1; i < argc; i++)
 546     {
 547       if (argv[i][0] == '-'
 548           && argv[i][1] == 'l'
 549           && argv[i][2] != '\0')
 550         {
 551           char *n;
 552
 553           n = (char *) xmalloc (strlen (argv[i]) + 20);
 554           sprintf (n, "--library=%s", argv[i] + 2);
 555           argv[i] = n;
 556         }
 557     }
 558
 559   last_optind = -1;
 560   while (1)
 561     {
 562       int longind;
 563       int optc;
 564
 565       /* Using last_optind lets us avoid calling ldemul_parse_args
 566          multiple times on a single option, which would lead to
 567          confusion in the internal static variables maintained by
 568          getopt.  This could otherwise happen for an argument like
 569          -nx, in which the -n is parsed as a single option, and we
 570          loop around to pick up the -x.  */
 571       if (optind != last_optind)
 572         if (ldemul_parse_args (argc, argv))
 573           continue;
 574
 575       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 576          can indicate a long option.  */
 577       opterr = 0;
 578       last_optind = optind;
 579       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 580       if (optc == '?')
 581         {
 582           optind = last_optind;
 583           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 584         }
 585
 586       if (optc == -1)
 587         break;
 588
 589       switch (optc)
 590         {
 591         case '?':
 592           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 593         default:
 594           einfo (_("%P%F: use the --help option for usage information\n"));
 595
 596         case 1:                 /* File name.  */
 597           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 598                                (char *) NULL);
 599           break;
 600
 601         case OPTION_IGNORE:
 602           break;
 603         case 'a':
 604           /* For HP/UX compatibility.  Actually -a shared should mean
 605              ``use only shared libraries'' but, then, we don't
 606              currently support shared libraries on HP/UX anyhow.  */
 607           if (strcmp (optarg, "archive") == 0)
 608             config.dynamic_link = FALSE;
 609           else if (strcmp (optarg, "shared") == 0
 610                    || strcmp (optarg, "default") == 0)
 611             config.dynamic_link = TRUE;
 612           else
 613             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 614           break;
 615         case OPTION_ASSERT:
 616           /* FIXME: We just ignore these, but we should handle them.  */
 617           if (strcmp (optarg, "definitions") == 0)
 618             ;
 619           else if (strcmp (optarg, "nodefinitions") == 0)
 620             ;
 621           else if (strcmp (optarg, "nosymbolic") == 0)
 622             ;
 623           else if (strcmp (optarg, "pure-text") == 0)
 624             ;
 625           else
 626             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 627           break;
 628         case 'A':
 629           ldfile_add_arch (optarg);
 630           break;
 631         case 'b':
 632           lang_add_target (optarg);
 633           break;
 634         case 'c':
 635           ldfile_open_command_file (optarg);
 636           parser_input = input_mri_script;
 637           yyparse ();
 638           break;
 639         case OPTION_CALL_SHARED:
 640           config.dynamic_link = TRUE;
 641           break;
 642         case OPTION_NON_SHARED:
 643           config.dynamic_link = FALSE;
 644           break;
 645         case OPTION_CREF:
 646           command_line.cref = TRUE;
 647           link_info.notice_all = TRUE;
 648           break;
 649         case 'd':
 650           command_line.force_common_definition = TRUE;
 651           break;
 652         case OPTION_DEFSYM:
 653           lex_string = optarg;
 654           lex_redirect (optarg);
 655           parser_input = input_defsym;
 656           parsing_defsym = 1;
 657           yyparse ();
 658           parsing_defsym = 0;
 659           lex_string = NULL;
 660           break;
 661         case OPTION_DEMANGLE:
 662           demangling = TRUE;
 663           if (optarg != NULL)
 664             {
 665               enum demangling_styles style;
 666
 667               style = cplus_demangle_name_to_style (optarg);
 668               if (style == unknown_demangling)
 669                 einfo (_("%F%P: unknown demangling style `%s'"),
 670                        optarg);
 671
 672               cplus_demangle_set_style (style);
 673             }
 674           break;
 675         case 'I':               /* Used on Solaris.  */
 676         case OPTION_DYNAMIC_LINKER:
 677           command_line.interpreter = optarg;
 678           break;
 679         case OPTION_EB:
 680           command_line.endian = ENDIAN_BIG;
 681           break;
 682         case OPTION_EL:
 683           command_line.endian = ENDIAN_LITTLE;
 684           break;
 685         case OPTION_EMBEDDED_RELOCS:
 686           command_line.embedded_relocs = TRUE;
 687           break;
 688         case OPTION_EXPORT_DYNAMIC:
 689         case 'E': /* HP/UX compatibility.  */
 690           link_info.export_dynamic = TRUE;
 691           break;
 692         case 'e':
 693           lang_add_entry (optarg, TRUE);
 694           break;
 695         case 'f':
 696           if (command_line.auxiliary_filters == NULL)
 697             {
 698               command_line.auxiliary_filters =
 699                 (char **) xmalloc (2 * sizeof (char *));
 700               command_line.auxiliary_filters[0] = optarg;
 701               command_line.auxiliary_filters[1] = NULL;
 702             }
 703           else
 704             {
 705               int c;
 706               char **p;
 707
 708               c = 0;
 709               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 710                 ++c;
 711               command_line.auxiliary_filters =
 712                 (char **) xrealloc (command_line.auxiliary_filters,
 713                                     (c + 2) * sizeof (char *));
 714               command_line.auxiliary_filters[c] = optarg;
 715               command_line.auxiliary_filters[c + 1] = NULL;
 716             }
 717           break;
 718         case 'F':
 719           command_line.filter_shlib = optarg;
 720           break;
 721         case OPTION_FORCE_EXE_SUFFIX:
 722           command_line.force_exe_suffix = TRUE;
 723           break;
 724         case 'G':
 725           {
 726             char *end;
 727             g_switch_value = strtoul (optarg, &end, 0);
 728             if (*end)
 729               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 730           }
 731           break;
 732         case 'g':
 733           /* Ignore.  */
 734           break;
 735         case OPTION_GC_SECTIONS:
 736           command_line.gc_sections = TRUE;
 737           break;
 738         case OPTION_HELP:
 739           help ();
 740           xexit (0);
 741           break;
 742         case 'L':
 743           ldfile_add_library_path (optarg, TRUE);
 744           break;
 745         case 'l':
 746           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 747                                (char *) NULL);
 748           break;
 749         case 'M':
 750           config.map_filename = "-";
 751           break;
 752         case 'm':
 753           /* Ignore.  Was handled in a pre-parse.   */
 754           break;
 755         case OPTION_MAP:
 756           config.map_filename = optarg;
 757           break;
 758         case 'N':
 759           config.text_read_only = FALSE;
 760           config.magic_demand_paged = FALSE;
 761           config.dynamic_link = FALSE;
 762           break;
 763         case OPTION_NO_OMAGIC:
 764           config.text_read_only = TRUE;
 765           config.magic_demand_paged = TRUE;
 766           /* NB/ Does not set dynamic_link to TRUE.
 767              Use --call-shared or -Bdynamic for this.  */
 768           break;
 769         case 'n':
 770           config.magic_demand_paged = FALSE;
 771           config.dynamic_link = FALSE;
 772           break;
 773         case OPTION_NO_DEFINE_COMMON:
 774           command_line.inhibit_common_definition = TRUE;
 775           break;
 776         case OPTION_NO_DEMANGLE:
 777           demangling = FALSE;
 778           break;
 779         case OPTION_NO_GC_SECTIONS:
 780           command_line.gc_sections = FALSE;
 781           break;
 782         case OPTION_NO_KEEP_MEMORY:
 783           link_info.keep_memory = FALSE;
 784           break;
 785         case OPTION_NO_UNDEFINED:
 786           link_info.no_undefined = TRUE;
 787           break;
 788         case OPTION_ALLOW_SHLIB_UNDEFINED:
 789           link_info.allow_shlib_undefined = TRUE;
 790           break;
 791         case OPTION_ALLOW_MULTIPLE_DEFINITION:
 792           link_info.allow_multiple_definition = TRUE;
 793           break;
 794         case OPTION_NO_UNDEFINED_VERSION:
 795           link_info.allow_undefined_version = FALSE;
 796           break;
 797         case OPTION_NO_WARN_MISMATCH:
 798           command_line.warn_mismatch = FALSE;
 799           break;
 800         case OPTION_NOINHIBIT_EXEC:
 801           force_make_executable = TRUE;
 802           break;
 803         case OPTION_NOSTDLIB:
 804           config.only_cmd_line_lib_dirs = TRUE;
 805           break;
 806         case OPTION_NO_WHOLE_ARCHIVE:
 807           whole_archive = FALSE;
 808           break;
 809         case 'O':
 810           /* FIXME "-O<non-digits> <value>" used to set the address of
 811              section <non-digits>.  Was this for compatibility with
 812              something, or can we create a new option to do that
 813              (with a syntax similar to -defsym)?
 814              getopt can't handle two args to an option without kludges.  */
 815
 816           /* Enable optimizations of output files.  */
 817           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
 818           break;
 819         case 'o':
 820           lang_add_output (optarg, 0);
 821           break;
 822         case OPTION_OFORMAT:
 823           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 824           break;
 825         case 'q':
 826           link_info.emitrelocations = TRUE;
 827           break;
 828         case 'i':
 829         case 'r':
 830           if (optind == last_optind)
 831             /* This can happen if the user put "-rpath,a" on the command
 832                line.  (Or something similar.  The comma is important).
 833                Getopt becomes confused and thinks that this is a -r option
 834                but it cannot parse the text after the -r so it refuses to
 835                increment the optind counter.  Detect this case and issue
 836                an error message here.  We cannot just make this a warning,
 837                increment optind, and continue because getopt is too confused
 838                and will seg-fault the next time around.  */
 839             einfo(_("%P%F: bad -rpath option\n"));
 840
 841           link_info.relocateable = TRUE;
 842           config.build_constructors = FALSE;
 843           config.magic_demand_paged = FALSE;
 844           config.text_read_only = FALSE;
 845           config.dynamic_link = FALSE;
 846           break;
 847         case 'R':
 848           /* The GNU linker traditionally uses -R to mean to include
 849              only the symbols from a file.  The Solaris linker uses -R
 850              to set the path used by the runtime linker to find
 851              libraries.  This is the GNU linker -rpath argument.  We
 852              try to support both simultaneously by checking the file
 853              named.  If it is a directory, rather than a regular file,
 854              we assume -rpath was meant.  */
 855           {
 856             struct stat s;
 857
 858             if (stat (optarg, &s) >= 0
 859                 && ! S_ISDIR (s.st_mode))
 860               {
 861                 lang_add_input_file (optarg,
 862                                      lang_input_file_is_symbols_only_enum,
 863                                      (char *) NULL);
 864                 break;
 865               }
 866           }
 867           /* Fall through.  */
 868         case OPTION_RPATH:
 869           if (command_line.rpath == NULL)
 870             command_line.rpath = xstrdup (optarg);
 871           else
 872             {
 873               size_t rpath_len = strlen (command_line.rpath);
 874               size_t optarg_len = strlen (optarg);
 875               char *buf;
 876               char *cp = command_line.rpath;
 877
 878               /* First see whether OPTARG is already in the path.  */
 879               do
 880                 {
 881                   size_t idx = 0;
 882
 883                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 884                     ++idx;
 885                   if (optarg[idx] == '\0'
 886                       && (cp[idx] == '\0' || cp[idx] == ':'))
 887                     /* We found it.  */
 888                     break;
 889
 890                   /* Not yet found.  */
 891                   cp = strchr (cp, ':');
 892                   if (cp != NULL)
 893                     ++cp;
 894                 }
 895               while (cp != NULL);
 896
 897               if (cp == NULL)
 898                 {
 899                   buf = xmalloc (rpath_len + optarg_len + 2);
 900                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 901                   free (command_line.rpath);
 902                   command_line.rpath = buf;
 903                 }
 904             }
 905           break;
 906         case OPTION_RPATH_LINK:
 907           if (command_line.rpath_link == NULL)
 908             command_line.rpath_link = xstrdup (optarg);
 909           else
 910             {
 911               char *buf;
 912
 913               buf = xmalloc (strlen (command_line.rpath_link)
 914                              + strlen (optarg)
 915                              + 2);
 916               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 917               free (command_line.rpath_link);
 918               command_line.rpath_link = buf;
 919             }
 920           break;
 921         case OPTION_RELAX:
 922           command_line.relax = TRUE;
 923           break;
 924         case OPTION_RETAIN_SYMBOLS_FILE:
 925           add_keepsyms_file (optarg);
 926           break;
 927         case 'S':
 928           link_info.strip = strip_debugger;
 929           break;
 930         case 's':
 931           link_info.strip = strip_all;
 932           break;
 933         case OPTION_STRIP_DISCARDED:
 934           link_info.strip_discarded = TRUE;
 935           break;
 936         case OPTION_NO_STRIP_DISCARDED:
 937           link_info.strip_discarded = FALSE;
 938           break;
 939         case OPTION_SHARED:
 940           if (config.has_shared)
 941             link_info.shared = TRUE;
 942           else
 943             einfo (_("%P%F: -shared not supported\n"));
 944           break;
 945         case 'h':               /* Used on Solaris.  */
 946         case OPTION_SONAME:
 947           command_line.soname = optarg;
 948           break;
 949         case OPTION_SORT_COMMON:
 950           config.sort_common = TRUE;
 951           break;
 952         case OPTION_STATS:
 953           config.stats = TRUE;
 954           break;
 955         case OPTION_SYMBOLIC:
 956           link_info.symbolic = TRUE;
 957           break;
 958         case 't':
 959           trace_files = TRUE;
 960           break;
 961         case 'T':
 962           ldfile_open_command_file (optarg);
 963           parser_input = input_script;
 964           yyparse ();
 965           break;
 966         case OPTION_SECTION_START:
 967           {
 968             char *optarg2;
 969             char *sec_name;
 970             int len;
 971
 972             /* Check for <something>=<somthing>...  */
 973             optarg2 = strchr (optarg, '=');
 974             if (optarg2 == NULL)
 975               einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
 976
 977             optarg2++;
 978
 979             /* So far so good.  Are all the args present?  */
 980             if ((*optarg == '\0') || (*optarg2 == '\0'))
 981               einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
 982
 983             /* We must copy the section name as set_section_start
 984                doesn't do it for us.  */
 985             len = optarg2 - optarg;
 986             sec_name = xmalloc (len);
 987             memcpy (sec_name, optarg, len - 1);
 988             sec_name[len - 1] = 0;
 989
 990             /* Then set it...  */
 991             set_section_start (sec_name, optarg2);
 992           }
 993           break;
 994         case OPTION_TARGET_HELP:
 995           /* Mention any target specific options.  */
 996           ldemul_list_emulation_options (stdout);
 997           exit (0);
 998         case OPTION_TBSS:
 999           set_section_start (".bss", optarg);
1000           break;
1001         case OPTION_TDATA:
1002           set_section_start (".data", optarg);
1003           break;
1004         case OPTION_TTEXT:
1005           set_section_start (".text", optarg);
1006           break;
1007         case OPTION_TRADITIONAL_FORMAT:
1008           link_info.traditional_format = TRUE;
1009           break;
1010         case OPTION_TASK_LINK:
1011           link_info.task_link = TRUE;
1012           /* Fall through - do an implied -r option.  */
1013         case OPTION_UR:
1014           link_info.relocateable = TRUE;
1015           config.build_constructors = TRUE;
1016           config.magic_demand_paged = FALSE;
1017           config.text_read_only = FALSE;
1018           config.dynamic_link = FALSE;
1019           break;
1020         case 'u':
1021           ldlang_add_undef (optarg);
1022           break;
1023         case OPTION_UNIQUE:
1024           if (optarg != NULL)
1025             lang_add_unique (optarg);
1026           else
1027             config.unique_orphan_sections = TRUE;
1028           break;
1029         case OPTION_VERBOSE:
1030           ldversion (1);
1031           version_printed = TRUE;
1032           trace_file_tries = TRUE;
1033           break;
1034         case 'v':
1035           ldversion (0);
1036           version_printed = TRUE;
1037           break;
1038         case 'V':
1039           ldversion (1);
1040           version_printed = TRUE;
1041           break;
1042         case OPTION_VERSION:
1043           ldversion (2);
1044           xexit (0);
1045           break;
1046         case OPTION_VERSION_SCRIPT:
1047           /* This option indicates a small script that only specifies
1048              version information.  Read it, but don't assume that
1049              we've seen a linker script.  */
1050           {
1051             FILE *hold_script_handle;
1052
1053             hold_script_handle = saved_script_handle;
1054             ldfile_open_command_file (optarg);
1055             saved_script_handle = hold_script_handle;
1056             parser_input = input_version_script;
1057             yyparse ();
1058           }
1059           break;
1060         case OPTION_VERSION_EXPORTS_SECTION:
1061           /* This option records a version symbol to be applied to the
1062              symbols listed for export to be found in the object files
1063              .exports sections.  */
1064           command_line.version_exports_section = optarg;
1065           break;
1066         case OPTION_WARN_COMMON:
1067           config.warn_common = TRUE;
1068           break;
1069         case OPTION_WARN_CONSTRUCTORS:
1070           config.warn_constructors = TRUE;
1071           break;
1072         case OPTION_WARN_FATAL:
1073           config.fatal_warnings = TRUE;
1074           break;
1075         case OPTION_WARN_MULTIPLE_GP:
1076           config.warn_multiple_gp = TRUE;
1077           break;
1078         case OPTION_WARN_ONCE:
1079           config.warn_once = TRUE;
1080           break;
1081         case OPTION_WARN_SECTION_ALIGN:
1082           config.warn_section_align = TRUE;
1083           break;
1084         case OPTION_WHOLE_ARCHIVE:
1085           whole_archive = TRUE;
1086           break;
1087         case OPTION_WRAP:
1088           add_wrap (optarg);
1089           break;
1090         case OPTION_DISCARD_NONE:
1091           link_info.discard = discard_none;
1092           break;
1093         case 'X':
1094           link_info.discard = discard_l;
1095           break;
1096         case 'x':
1097           link_info.discard = discard_all;
1098           break;
1099         case 'Y':
1100           if (strncmp (optarg, "P,", 2) == 0)
1101             optarg += 2;
1102           default_dirlist = xstrdup (optarg);
1103           break;
1104         case 'y':
1105           add_ysym (optarg);
1106           break;
1107         case OPTION_SPARE_DYNAMIC_TAGS:
1108           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1109           break;
1110         case OPTION_SPLIT_BY_RELOC:
1111           if (optarg != NULL)
1112             config.split_by_reloc = strtoul (optarg, NULL, 0);
1113           else
1114             config.split_by_reloc = 32768;
1115           break;
1116         case OPTION_SPLIT_BY_FILE:
1117           if (optarg != NULL)
1118             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1119           else
1120             config.split_by_file = 1;
1121           break;
1122         case OPTION_CHECK_SECTIONS:
1123           command_line.check_section_addresses = TRUE;
1124           break;
1125         case OPTION_NO_CHECK_SECTIONS:
1126           command_line.check_section_addresses = FALSE;
1127           break;
1128         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1129           command_line.accept_unknown_input_arch = TRUE;
1130           break;
1131         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1132           command_line.accept_unknown_input_arch = FALSE;
1133           break;
1134         case '(':
1135           if (ingroup)
1136             einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1137
1138           lang_enter_group ();
1139           ingroup = 1;
1140           break;
1141         case ')':
1142           if (! ingroup)
1143             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1144
1145           lang_leave_group ();
1146           ingroup = 0;
1147           break;
1148         case OPTION_MPC860C0:
1149           /* Default value (in bytes).  */
1150           link_info.mpc860c0 = 20;
1151           if (optarg)
1152             {
1153               unsigned words;
1154
1155               words = is_num (optarg, 1, 10, 0);
1156               if (words == 0)
1157                 einfo (_("%P%F: invalid argument to option \"mpc860c0\"\n"));
1158
1159               /* Convert words to bytes.  */
1160               link_info.mpc860c0 = words * 4;
1161             }
1162           command_line.relax = TRUE;
1163           break;
1164
1165         case OPTION_INIT:
1166           link_info.init_function = optarg;
1167           break;
1168
1169         case OPTION_FINI:
1170           link_info.fini_function = optarg;
1171           break;
1172         }
1173     }
1174
1175   if (ingroup)
1176     lang_leave_group ();
1177
1178   if (default_dirlist != NULL)
1179     set_default_dirlist (default_dirlist);
1180
1181 }
1182
1183 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1184    library search path.  */
1185
1186 static void
1187 set_default_dirlist (dirlist_ptr)
1188      char *dirlist_ptr;
1189 {
1190   char *p;
1191
1192   while (1)
1193     {
1194       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1195       if (p != NULL)
1196         *p = '\0';
1197       if (*dirlist_ptr != '\0')
1198         ldfile_add_library_path (dirlist_ptr, TRUE);
1199       if (p == NULL)
1200         break;
1201       dirlist_ptr = p + 1;
1202     }
1203 }
1204
1205 static void
1206 set_section_start (sect, valstr)
1207      char *sect, *valstr;
1208 {
1209   const char *end;
1210   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1211   if (*end)
1212     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1213   lang_section_start (sect, exp_intop (val));
1214 }
1215 \f
1216 /* Print help messages for the options.  */
1217
1218 static void
1219 help ()
1220 {
1221   unsigned i;
1222   const char **targets, **pp;
1223
1224   printf (_("Usage: %s [options] file...\n"), program_name);
1225
1226   printf (_("Options:\n"));
1227   for (i = 0; i < OPTION_COUNT; i++)
1228     {
1229       if (ld_options[i].doc != NULL)
1230         {
1231           bfd_boolean comma;
1232           int len;
1233           unsigned j;
1234
1235           printf ("  ");
1236
1237           comma = FALSE;
1238           len = 2;
1239
1240           j = i;
1241           do
1242             {
1243               if (ld_options[j].shortopt != '\0'
1244                   && ld_options[j].control != NO_HELP)
1245                 {
1246                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1247                   len += (comma ? 2 : 0) + 2;
1248                   if (ld_options[j].arg != NULL)
1249                     {
1250                       if (ld_options[j].opt.has_arg != optional_argument)
1251                         {
1252                           printf (" ");
1253                           ++len;
1254                         }
1255                       printf ("%s", _(ld_options[j].arg));
1256                       len += strlen (_(ld_options[j].arg));
1257                     }
1258                   comma = TRUE;
1259                 }
1260               ++j;
1261             }
1262           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1263
1264           j = i;
1265           do
1266             {
1267               if (ld_options[j].opt.name != NULL
1268                   && ld_options[j].control != NO_HELP)
1269                 {
1270                   int two_dashes =
1271                     (ld_options[j].control == TWO_DASHES
1272                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1273
1274                   printf ("%s-%s%s",
1275                           comma ? ", " : "",
1276                           two_dashes ? "-" : "",
1277                           ld_options[j].opt.name);
1278                   len += ((comma ? 2 : 0)
1279                           + 1
1280                           + (two_dashes ? 1 : 0)
1281                           + strlen (ld_options[j].opt.name));
1282                   if (ld_options[j].arg != NULL)
1283                     {
1284                       printf (" %s", _(ld_options[j].arg));
1285                       len += 1 + strlen (_(ld_options[j].arg));
1286                     }
1287                   comma = TRUE;
1288                 }
1289               ++j;
1290             }
1291           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1292
1293           if (len >= 30)
1294             {
1295               printf ("\n");
1296               len = 0;
1297             }
1298
1299           for (; len < 30; len++)
1300             putchar (' ');
1301
1302           printf ("%s\n", _(ld_options[i].doc));
1303         }
1304     }
1305
1306   /* Note: Various tools (such as libtool) depend upon the
1307      format of the listings below - do not change them.  */
1308   /* xgettext:c-format */
1309   printf (_("%s: supported targets:"), program_name);
1310   targets = bfd_target_list ();
1311   for (pp = targets; *pp != NULL; pp++)
1312     printf (" %s", *pp);
1313   free (targets);
1314   printf ("\n");
1315
1316   /* xgettext:c-format */
1317   printf (_("%s: supported emulations: "), program_name);
1318   ldemul_list_emulations (stdout);
1319   printf ("\n");
1320
1321   /* xgettext:c-format */
1322   printf (_("%s: emulation specific options:\n"), program_name);
1323   ldemul_list_emulation_options (stdout);
1324   printf ("\n");
1325
1326   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1327 }