ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GLD, the Gnu Linker.
   7
   8 GLD is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GLD is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GLD; see the file COPYING.  If not, write to the Free
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 02111-1307, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "libiberty.h"
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <ctype.h>
  29 #include "getopt.h"
  30 #include "bfdlink.h"
  31 #include "ld.h"
  32 #include "ldmain.h"
  33 #include "ldmisc.h"
  34 #include "ldexp.h"
  35 #include "ldlang.h"
  36 #include "ldgram.h"
  37 #include "ldlex.h"
  38 #include "ldfile.h"
  39 #include "ldver.h"
  40 #include "ldemul.h"
  41 #include "demangle.h"
  42
  43 #ifndef PATH_SEPARATOR
  44 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  45 #define PATH_SEPARATOR ';'
  46 #else
  47 #define PATH_SEPARATOR ':'
  48 #endif
  49 #endif
  50
  51 /* Somewhere above, sys/stat.h got included . . . .  */
  52 #if !defined(S_ISDIR) && defined(S_IFDIR)
  53 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  54 #endif
  55
  56 /* Omit args to avoid the possibility of clashing with a system header
  57    that might disagree about consts.  */
  58 unsigned long strtoul ();
  59
  60 static int is_num PARAMS ((const char *, int, int, int));
  61 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
  62 static void set_section_start PARAMS ((char *sect, char *valstr));
  63 static void help PARAMS ((void));
  64
  65 /* Non-zero if we are processing a --defsym from the command line.  */
  66 int parsing_defsym = 0;
  67
  68 /* Codes used for the long options with no short synonyms.  150 isn't
  69    special; it's just an arbitrary non-ASCII char value.  */
  70
  71 #define OPTION_ASSERT                   150
  72 #define OPTION_CALL_SHARED              (OPTION_ASSERT + 1)
  73 #define OPTION_CREF                     (OPTION_CALL_SHARED + 1)
  74 #define OPTION_DEFSYM                   (OPTION_CREF + 1)
  75 #define OPTION_DEMANGLE                 (OPTION_DEFSYM + 1)
  76 #define OPTION_DYNAMIC_LINKER           (OPTION_DEMANGLE + 1)
  77 #define OPTION_EB                       (OPTION_DYNAMIC_LINKER + 1)
  78 #define OPTION_EL                       (OPTION_EB + 1)
  79 #define OPTION_EMBEDDED_RELOCS          (OPTION_EL + 1)
  80 #define OPTION_EXPORT_DYNAMIC           (OPTION_EMBEDDED_RELOCS + 1)
  81 #define OPTION_HELP                     (OPTION_EXPORT_DYNAMIC + 1)
  82 #define OPTION_IGNORE                   (OPTION_HELP + 1)
  83 #define OPTION_MAP                      (OPTION_IGNORE + 1)
  84 #define OPTION_NO_DEMANGLE              (OPTION_MAP + 1)
  85 #define OPTION_NO_KEEP_MEMORY           (OPTION_NO_DEMANGLE + 1)
  86 #define OPTION_NO_WARN_MISMATCH         (OPTION_NO_KEEP_MEMORY + 1)
  87 #define OPTION_NOINHIBIT_EXEC           (OPTION_NO_WARN_MISMATCH + 1)
  88 #define OPTION_NON_SHARED               (OPTION_NOINHIBIT_EXEC + 1)
  89 #define OPTION_NO_WHOLE_ARCHIVE         (OPTION_NON_SHARED + 1)
  90 #define OPTION_OFORMAT                  (OPTION_NO_WHOLE_ARCHIVE + 1)
  91 #define OPTION_RELAX                    (OPTION_OFORMAT + 1)
  92 #define OPTION_RETAIN_SYMBOLS_FILE      (OPTION_RELAX + 1)
  93 #define OPTION_RPATH                    (OPTION_RETAIN_SYMBOLS_FILE + 1)
  94 #define OPTION_RPATH_LINK               (OPTION_RPATH + 1)
  95 #define OPTION_SHARED                   (OPTION_RPATH_LINK + 1)
  96 #define OPTION_SONAME                   (OPTION_SHARED + 1)
  97 #define OPTION_SORT_COMMON              (OPTION_SONAME + 1)
  98 #define OPTION_STATS                    (OPTION_SORT_COMMON + 1)
  99 #define OPTION_SYMBOLIC                 (OPTION_STATS + 1)
 100 #define OPTION_TASK_LINK                (OPTION_SYMBOLIC + 1)
 101 #define OPTION_TBSS                     (OPTION_TASK_LINK + 1)
 102 #define OPTION_TDATA                    (OPTION_TBSS + 1)
 103 #define OPTION_TTEXT                    (OPTION_TDATA + 1)
 104 #define OPTION_TRADITIONAL_FORMAT       (OPTION_TTEXT + 1)
 105 #define OPTION_UR                       (OPTION_TRADITIONAL_FORMAT + 1)
 106 #define OPTION_VERBOSE                  (OPTION_UR + 1)
 107 #define OPTION_VERSION                  (OPTION_VERBOSE + 1)
 108 #define OPTION_VERSION_SCRIPT           (OPTION_VERSION + 1)
 109 #define OPTION_VERSION_EXPORTS_SECTION  (OPTION_VERSION_SCRIPT + 1)
 110 #define OPTION_WARN_COMMON              (OPTION_VERSION_EXPORTS_SECTION + 1)
 111 #define OPTION_WARN_CONSTRUCTORS        (OPTION_WARN_COMMON + 1)
 112 #define OPTION_WARN_FATAL               (OPTION_WARN_CONSTRUCTORS + 1)
 113 #define OPTION_WARN_MULTIPLE_GP         (OPTION_WARN_FATAL + 1)
 114 #define OPTION_WARN_ONCE                (OPTION_WARN_MULTIPLE_GP + 1)
 115 #define OPTION_WARN_SECTION_ALIGN       (OPTION_WARN_ONCE + 1)
 116 #define OPTION_SPLIT_BY_RELOC           (OPTION_WARN_SECTION_ALIGN + 1)
 117 #define OPTION_SPLIT_BY_FILE            (OPTION_SPLIT_BY_RELOC + 1)
 118 #define OPTION_WHOLE_ARCHIVE            (OPTION_SPLIT_BY_FILE + 1)
 119 #define OPTION_WRAP                     (OPTION_WHOLE_ARCHIVE + 1)
 120 #define OPTION_FORCE_EXE_SUFFIX         (OPTION_WRAP + 1)
 121 #define OPTION_GC_SECTIONS              (OPTION_FORCE_EXE_SUFFIX + 1)
 122 #define OPTION_NO_GC_SECTIONS           (OPTION_GC_SECTIONS + 1)
 123 #define OPTION_CHECK_SECTIONS           (OPTION_NO_GC_SECTIONS + 1)
 124 #define OPTION_NO_CHECK_SECTIONS        (OPTION_CHECK_SECTIONS + 1)
 125 #define OPTION_MPC860C0                 (OPTION_NO_CHECK_SECTIONS + 1)
 126 #define OPTION_NO_UNDEFINED             (OPTION_MPC860C0 + 1)
 127 #define OPTION_INIT                     (OPTION_NO_UNDEFINED + 1)
 128 #define OPTION_FINI                     (OPTION_INIT + 1)
 129 #define OPTION_SECTION_START            (OPTION_FINI + 1)
 130 #define OPTION_UNIQUE                   (OPTION_SECTION_START + 1)
 131 #define OPTION_TARGET_HELP              (OPTION_UNIQUE + 1)
 132 #define OPTION_ALLOW_SHLIB_UNDEFINED    (OPTION_TARGET_HELP + 1)
 133 #define OPTION_DISCARD_NONE             (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
 134 #define OPTION_SPARE_DYNAMIC_TAGS       (OPTION_DISCARD_NONE + 1)
 135
 136 /* The long options.  This structure is used for both the option
 137    parsing and the help text.  */
 138
 139 struct ld_option
 140 {
 141   /* The long option information.  */
 142   struct option opt;
 143   /* The short option with the same meaning ('\0' if none).  */
 144   char shortopt;
 145   /* The name of the argument (NULL if none).  */
 146   const char *arg;
 147   /* The documentation string.  If this is NULL, this is a synonym for
 148      the previous option.  */
 149   const char *doc;
 150   enum {
 151     /* Use one dash before long option name.  */
 152     ONE_DASH,
 153     /* Use two dashes before long option name.  */
 154     TWO_DASHES,
 155     /* Only accept two dashes before the long option name.
 156        This is an overloading of the use of this enum, since originally it
 157        was only intended to tell the --help display function how to display
 158        the long option name.  This feature was added in order to resolve
 159        the confusion about the -omagic command line switch.  Is it setting
 160        the output file name to "magic" or is it setting the NMAGIC flag on
 161        the output ?  It has been decided that it is setting the output file
 162        name, and that if you want to set the NMAGIC flag you should use -N
 163        or --omagic.  */
 164     EXACTLY_TWO_DASHES,
 165     /* Don't mention this option in --help output.  */
 166     NO_HELP
 167   } control;
 168 };
 169
 170 static const struct ld_option ld_options[] =
 171 {
 172   { {NULL, required_argument, NULL, '\0'},
 173       'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 174       ONE_DASH },
 175   { {"architecture", required_argument, NULL, 'A'},
 176       'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 177   { {"format", required_argument, NULL, 'b'},
 178       'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
 179   { {"mri-script", required_argument, NULL, 'c'},
 180       'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 181   { {"dc", no_argument, NULL, 'd'},
 182       'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 183   { {"dp", no_argument, NULL, 'd'},
 184       '\0', NULL, NULL, ONE_DASH },
 185   { {"entry", required_argument, NULL, 'e'},
 186       'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 187   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 188       'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 189   { {"EB", no_argument, NULL, OPTION_EB},
 190       '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 191   { {"EL", no_argument, NULL, OPTION_EL},
 192       '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 193   { {"auxiliary", required_argument, NULL, 'f'},
 194       'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 195       TWO_DASHES },
 196   { {"filter", required_argument, NULL, 'F'},
 197       'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
 198   { {NULL, no_argument, NULL, '\0'},
 199       'g', NULL, N_("Ignored"), ONE_DASH },
 200   { {"gpsize", required_argument, NULL, 'G'},
 201       'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 202       TWO_DASHES },
 203   { {"soname", required_argument, NULL, OPTION_SONAME},
 204       'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 205   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 206       'I', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
 207   { {"library", required_argument, NULL, 'l'},
 208       'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 209   { {"library-path", required_argument, NULL, 'L'},
 210       'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
 211   { {NULL, required_argument, NULL, '\0'},
 212       'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 213   { {"print-map", no_argument, NULL, 'M'},
 214       'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 215   { {"nmagic", no_argument, NULL, 'n'},
 216       'n', NULL, N_("Do not page align data"), TWO_DASHES },
 217   { {"omagic", no_argument, NULL, 'N'},
 218       'N', NULL, N_("Do not page align data, do not make text readonly"),
 219       EXACTLY_TWO_DASHES },
 220   { {"output", required_argument, NULL, 'o'},
 221       'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 222   { {NULL, required_argument, NULL, '\0'},
 223       'O', NULL, N_("Optimize output file"), ONE_DASH },
 224   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 225       '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 226   { {"emit-relocs", no_argument, NULL, 'q'},
 227       'q', NULL, "Generate relocations in final output", TWO_DASHES },
 228   { {"relocateable", no_argument, NULL, 'r'},
 229       'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
 230   { {NULL, no_argument, NULL, '\0'},
 231       'i', NULL, NULL, ONE_DASH },
 232   { {"just-symbols", required_argument, NULL, 'R'},
 233       'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 234       TWO_DASHES },
 235   { {"strip-all", no_argument, NULL, 's'},
 236       's', NULL, N_("Strip all symbols"), TWO_DASHES },
 237   { {"strip-debug", no_argument, NULL, 'S'},
 238       'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 239   { {"trace", no_argument, NULL, 't'},
 240       't', NULL, N_("Trace file opens"), TWO_DASHES },
 241   { {"script", required_argument, NULL, 'T'},
 242       'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 243   { {"undefined", required_argument, NULL, 'u'},
 244       'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
 245   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 246       '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 247   { {"Ur", no_argument, NULL, OPTION_UR},
 248       '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 249   { {"version", no_argument, NULL, OPTION_VERSION},
 250       'v', NULL, N_("Print version information"), TWO_DASHES },
 251   { {NULL, no_argument, NULL, '\0'},
 252       'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 253   { {"discard-all", no_argument, NULL, 'x'},
 254       'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 255   { {"discard-locals", no_argument, NULL, 'X'},
 256       'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 257   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 258       '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 259   { {"trace-symbol", required_argument, NULL, 'y'},
 260       'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 261   { {NULL, required_argument, NULL, '\0'},
 262       'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
 263   { {"start-group", no_argument, NULL, '('},
 264       '(', NULL, N_("Start a group"), TWO_DASHES },
 265   { {"end-group", no_argument, NULL, ')'},
 266       ')', NULL, N_("End a group"), TWO_DASHES },
 267   { {"assert", required_argument, NULL, OPTION_ASSERT},
 268       '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 269   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 270       '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 271   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 272       '\0', NULL, NULL, ONE_DASH },
 273   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 274       '\0', NULL, NULL, ONE_DASH },
 275   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 276       '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 277   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 278       '\0', NULL, NULL, ONE_DASH },
 279   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 280       '\0', NULL, NULL, ONE_DASH },
 281   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 282       '\0', NULL, NULL, ONE_DASH },
 283   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 284       '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 285   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 286       '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
 287   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 288       '\0', NULL, N_("Do not check section addresses for overlaps"),
 289       TWO_DASHES },
 290   { {"cref", no_argument, NULL, OPTION_CREF},
 291       '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 292   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 293       '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 294   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 295       '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
 296   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 297       '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 298   { {"fini", required_argument, NULL, OPTION_FINI},
 299      '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 300   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 301       '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 302   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 303       '\0', NULL, N_("Remove unused sections (on some targets)"),
 304       TWO_DASHES },
 305   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 306       '\0', NULL, N_("Don't remove unused sections (default)"),
 307       TWO_DASHES },
 308   { {"help", no_argument, NULL, OPTION_HELP},
 309       '\0', NULL, N_("Print option help"), TWO_DASHES },
 310   { {"init", required_argument, NULL, OPTION_INIT},
 311      '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 312   { {"Map", required_argument, NULL, OPTION_MAP},
 313       '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 314   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 315       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 316   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 317       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 318   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 319      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 320   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 321      '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
 322   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 323       '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 324   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 325       '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 326   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 327       '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
 328   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 329       '\0', NULL, NULL, NO_HELP },
 330   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 331       '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
 332   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 333       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 334   { {"relax", no_argument, NULL, OPTION_RELAX},
 335       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 336   { {"retain-symbols-file", required_argument, NULL,
 337        OPTION_RETAIN_SYMBOLS_FILE},
 338       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 339   { {"rpath", required_argument, NULL, OPTION_RPATH},
 340       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 341   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 342       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 343   { {"shared", no_argument, NULL, OPTION_SHARED},
 344       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 345   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 346       '\0', NULL, NULL, ONE_DASH },
 347   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 348       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 349   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 350       '\0', NULL, NULL, NO_HELP },
 351   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 352       '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
 353   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 354       '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
 355   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 356       '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 357   { {"stats", no_argument, NULL, OPTION_STATS},
 358       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 359   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 360       '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 361   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 362       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 363   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 364       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 365   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 366       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 367   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 368       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 369   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 370       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 371   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 372       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 373   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 374       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 375   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 376       '\0', NULL, NULL, NO_HELP },
 377   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 378       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 379   { {"version-exports-section", required_argument, NULL,
 380      OPTION_VERSION_EXPORTS_SECTION },
 381     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 382     TWO_DASHES },
 383   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 384       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 385   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 386       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 387       TWO_DASHES },
 388   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 389       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 390   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 391       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 392   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 393       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 394       TWO_DASHES },
 395   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 396      '\0', NULL, N_("Treat warnings as errors"),
 397      TWO_DASHES },
 398   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 399       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 400   { {"wrap", required_argument, NULL, OPTION_WRAP},
 401       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 402   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 403       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 404 };
 405
 406 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 407
 408 /* Test STRING for containing a string of digits that form a number
 409    between MIN and MAX.  The return value is the number or ERR.  */
 410
 411 static int
 412 is_num (string, min, max, err)
 413      const char *string;
 414      int min;
 415      int max;
 416      int err;
 417 {
 418   int result = 0;
 419
 420   for (; *string; ++string)
 421     {
 422       if (! isdigit (*string))
 423         {
 424           result = err;
 425           break;
 426         }
 427       result = result * 10 + (*string - '0');
 428     }
 429   if (result < min || result > max)
 430     result = err;
 431
 432   return result;
 433 }
 434
 435 void
 436 parse_args (argc, argv)
 437      unsigned argc;
 438      char **argv;
 439 {
 440   unsigned i;
 441   int is, il, irl;
 442   int ingroup = 0;
 443   char *default_dirlist = NULL;
 444   char shortopts[OPTION_COUNT * 3 + 2];
 445   struct option longopts[OPTION_COUNT + 1];
 446   struct option really_longopts[OPTION_COUNT + 1];
 447   int last_optind;
 448
 449   /* Starting the short option string with '-' is for programs that
 450      expect options and other ARGV-elements in any order and that care about
 451      the ordering of the two.  We describe each non-option ARGV-element
 452      as if it were the argument of an option with character code 1.  */
 453   shortopts[0] = '-';
 454   is = 1;
 455   il = 0;
 456   irl = 0;
 457   for (i = 0; i < OPTION_COUNT; i++)
 458     {
 459       if (ld_options[i].shortopt != '\0')
 460         {
 461           shortopts[is] = ld_options[i].shortopt;
 462           ++is;
 463           if (ld_options[i].opt.has_arg == required_argument
 464               || ld_options[i].opt.has_arg == optional_argument)
 465             {
 466               shortopts[is] = ':';
 467               ++is;
 468               if (ld_options[i].opt.has_arg == optional_argument)
 469                 {
 470                   shortopts[is] = ':';
 471                   ++is;
 472                 }
 473             }
 474         }
 475       if (ld_options[i].opt.name != NULL)
 476         {
 477           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 478             {
 479               really_longopts[irl] = ld_options[i].opt;
 480               ++irl;
 481             }
 482           else
 483             {
 484               longopts[il] = ld_options[i].opt;
 485               ++il;
 486             }
 487         }
 488     }
 489   shortopts[is] = '\0';
 490   longopts[il].name = NULL;
 491   really_longopts[irl].name = NULL;
 492
 493   /* The -G option is ambiguous on different platforms.  Sometimes it
 494      specifies the largest data size to put into the small data
 495      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 496      the first form takes an argument, while the second does not.
 497
 498      We need to permit the --shared form because on some platforms,
 499      such as Solaris, gcc -shared will pass -G to the linker.
 500
 501      To permit either usage, we look through the argument list.  If we
 502      find -G not followed by a number, we change it into --shared.
 503      This will work for most normal cases.  */
 504   for (i = 1; i < argc; i++)
 505     if (strcmp (argv[i], "-G") == 0
 506         && (i + 1 >= argc
 507             || ! isdigit ((unsigned char) argv[i + 1][0])))
 508       argv[i] = (char *) "--shared";
 509
 510   /* Because we permit long options to start with a single dash, and
 511      we have a --library option, and the -l option is conventionally
 512      used with an immediately following argument, we can have bad
 513      results if somebody tries to use -l with a library whose name
 514      happens to start with "ibrary", as in -li.  We avoid problems by
 515      simply turning -l into --library.  This means that users will
 516      have to use two dashes in order to use --library, which is OK
 517      since that's how it is documented.
 518
 519      FIXME: It's possible that this problem can arise for other short
 520      options as well, although the user does always have the recourse
 521      of adding a space between the option and the argument.  */
 522   for (i = 1; i < argc; i++)
 523     {
 524       if (argv[i][0] == '-'
 525           && argv[i][1] == 'l'
 526           && argv[i][2] != '\0')
 527         {
 528           char *n;
 529
 530           n = (char *) xmalloc (strlen (argv[i]) + 20);
 531           sprintf (n, "--library=%s", argv[i] + 2);
 532           argv[i] = n;
 533         }
 534     }
 535
 536   last_optind = -1;
 537   while (1)
 538     {
 539       int longind, errind;
 540       int optc;
 541
 542       /* Using last_optind lets us avoid calling ldemul_parse_args
 543          multiple times on a single option, which would lead to
 544          confusion in the internal static variables maintained by
 545          getopt.  This could otherwise happen for an argument like
 546          -nx, in which the -n is parsed as a single option, and we
 547          loop around to pick up the -x.  */
 548       if (optind != last_optind)
 549         {
 550           if (ldemul_parse_args (argc, argv))
 551             continue;
 552           last_optind = optind;
 553         }
 554
 555       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 556          can indicate a long option.  */
 557       opterr = 0;
 558       errind = optind;
 559       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 560       if (optc == '?')
 561         {
 562           --optind;
 563           optc = getopt_long (argc, argv, shortopts, really_longopts, &longind);
 564         }
 565
 566       if (optc == -1)
 567         break;
 568
 569       switch (optc)
 570         {
 571         case '?':
 572           fprintf (stderr, _("%s: unrecognized option '%s'\n"),
 573                    program_name, argv[errind]);
 574         default:
 575           fprintf (stderr,
 576                    _("%s: use the --help option for usage information\n"),
 577                    program_name);
 578           xexit (1);
 579         case 1:                 /* File name.  */
 580           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 581                                (char *) NULL);
 582           break;
 583
 584         case OPTION_IGNORE:
 585           break;
 586         case 'a':
 587           /* For HP/UX compatibility.  Actually -a shared should mean
 588              ``use only shared libraries'' but, then, we don't
 589              currently support shared libraries on HP/UX anyhow.  */
 590           if (strcmp (optarg, "archive") == 0)
 591             config.dynamic_link = false;
 592           else if (strcmp (optarg, "shared") == 0
 593                    || strcmp (optarg, "default") == 0)
 594             config.dynamic_link = true;
 595           else
 596             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 597           break;
 598         case OPTION_ASSERT:
 599           /* FIXME: We just ignore these, but we should handle them.  */
 600           if (strcmp (optarg, "definitions") == 0)
 601             ;
 602           else if (strcmp (optarg, "nodefinitions") == 0)
 603             ;
 604           else if (strcmp (optarg, "nosymbolic") == 0)
 605             ;
 606           else if (strcmp (optarg, "pure-text") == 0)
 607             ;
 608           else
 609             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 610           break;
 611         case 'A':
 612           ldfile_add_arch (optarg);
 613           break;
 614         case 'b':
 615           lang_add_target (optarg);
 616           break;
 617         case 'c':
 618           ldfile_open_command_file (optarg);
 619           parser_input = input_mri_script;
 620           yyparse ();
 621           break;
 622         case OPTION_CALL_SHARED:
 623           config.dynamic_link = true;
 624           break;
 625         case OPTION_NON_SHARED:
 626           config.dynamic_link = false;
 627           break;
 628         case OPTION_CREF:
 629           command_line.cref = true;
 630           link_info.notice_all = true;
 631           break;
 632         case 'd':
 633           command_line.force_common_definition = true;
 634           break;
 635         case OPTION_DEFSYM:
 636           lex_string = optarg;
 637           lex_redirect (optarg);
 638           parser_input = input_defsym;
 639           parsing_defsym = 1;
 640           yyparse ();
 641           parsing_defsym = 0;
 642           lex_string = NULL;
 643           break;
 644         case OPTION_DEMANGLE:
 645           demangling = true;
 646           if (optarg != NULL)
 647             {
 648               enum demangling_styles style;
 649
 650               style = cplus_demangle_name_to_style (optarg);
 651               if (style == unknown_demangling)
 652                 einfo (_("%F%P: unknown demangling style `%s'"),
 653                        optarg);
 654
 655               cplus_demangle_set_style (style);
 656             }
 657           break;
 658         case 'I':               /* Used on Solaris.  */
 659         case OPTION_DYNAMIC_LINKER:
 660           command_line.interpreter = optarg;
 661           break;
 662         case OPTION_EB:
 663           command_line.endian = ENDIAN_BIG;
 664           break;
 665         case OPTION_EL:
 666           command_line.endian = ENDIAN_LITTLE;
 667           break;
 668         case OPTION_EMBEDDED_RELOCS:
 669           command_line.embedded_relocs = true;
 670           break;
 671         case OPTION_EXPORT_DYNAMIC:
 672         case 'E': /* HP/UX compatibility.  */
 673           link_info.export_dynamic = true;
 674           break;
 675         case 'e':
 676           lang_add_entry (optarg, true);
 677           break;
 678         case 'f':
 679           if (command_line.auxiliary_filters == NULL)
 680             {
 681               command_line.auxiliary_filters =
 682                 (char **) xmalloc (2 * sizeof (char *));
 683               command_line.auxiliary_filters[0] = optarg;
 684               command_line.auxiliary_filters[1] = NULL;
 685             }
 686           else
 687             {
 688               int c;
 689               char **p;
 690
 691               c = 0;
 692               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 693                 ++c;
 694               command_line.auxiliary_filters =
 695                 (char **) xrealloc (command_line.auxiliary_filters,
 696                                     (c + 2) * sizeof (char *));
 697               command_line.auxiliary_filters[c] = optarg;
 698               command_line.auxiliary_filters[c + 1] = NULL;
 699             }
 700           break;
 701         case 'F':
 702           command_line.filter_shlib = optarg;
 703           break;
 704         case OPTION_FORCE_EXE_SUFFIX:
 705           command_line.force_exe_suffix = true;
 706           break;
 707         case 'G':
 708           {
 709             char *end;
 710             g_switch_value = strtoul (optarg, &end, 0);
 711             if (*end)
 712               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 713           }
 714           break;
 715         case 'g':
 716           /* Ignore.  */
 717           break;
 718         case OPTION_GC_SECTIONS:
 719           command_line.gc_sections = true;
 720           break;
 721         case OPTION_HELP:
 722           help ();
 723           xexit (0);
 724           break;
 725         case 'L':
 726           ldfile_add_library_path (optarg, true);
 727           break;
 728         case 'l':
 729           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 730                                (char *) NULL);
 731           break;
 732         case 'M':
 733           config.map_filename = "-";
 734           break;
 735         case 'm':
 736           /* Ignore.  Was handled in a pre-parse.   */
 737           break;
 738         case OPTION_MAP:
 739           config.map_filename = optarg;
 740           break;
 741         case 'N':
 742           config.text_read_only = false;
 743           config.magic_demand_paged = false;
 744           config.dynamic_link = false;
 745           break;
 746         case 'n':
 747           config.magic_demand_paged = false;
 748           config.dynamic_link = false;
 749           break;
 750         case OPTION_NO_DEMANGLE:
 751           demangling = false;
 752           break;
 753         case OPTION_NO_GC_SECTIONS:
 754           command_line.gc_sections = false;
 755           break;
 756         case OPTION_NO_KEEP_MEMORY:
 757           link_info.keep_memory = false;
 758           break;
 759         case OPTION_NO_UNDEFINED:
 760           link_info.no_undefined = true;
 761           break;
 762         case OPTION_ALLOW_SHLIB_UNDEFINED:
 763           link_info.allow_shlib_undefined = true;
 764           break;
 765         case OPTION_NO_WARN_MISMATCH:
 766           command_line.warn_mismatch = false;
 767           break;
 768         case OPTION_NOINHIBIT_EXEC:
 769           force_make_executable = true;
 770           break;
 771         case OPTION_NO_WHOLE_ARCHIVE:
 772           whole_archive = false;
 773           break;
 774         case 'O':
 775           /* FIXME "-O<non-digits> <value>" used to set the address of
 776              section <non-digits>.  Was this for compatibility with
 777              something, or can we create a new option to do that
 778              (with a syntax similar to -defsym)?
 779              getopt can't handle two args to an option without kludges.  */
 780
 781           /* Enable optimizations of output files.  */
 782           link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
 783           break;
 784         case 'o':
 785           lang_add_output (optarg, 0);
 786           break;
 787         case OPTION_OFORMAT:
 788           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 789           break;
 790         case 'q':
 791           link_info.emitrelocations = true;
 792           break;
 793         case 'i':
 794         case 'r':
 795           link_info.relocateable = true;
 796           config.build_constructors = false;
 797           config.magic_demand_paged = false;
 798           config.text_read_only = false;
 799           config.dynamic_link = false;
 800           break;
 801         case 'R':
 802           /* The GNU linker traditionally uses -R to mean to include
 803              only the symbols from a file.  The Solaris linker uses -R
 804              to set the path used by the runtime linker to find
 805              libraries.  This is the GNU linker -rpath argument.  We
 806              try to support both simultaneously by checking the file
 807              named.  If it is a directory, rather than a regular file,
 808              we assume -rpath was meant.  */
 809           {
 810             struct stat s;
 811
 812             if (stat (optarg, &s) >= 0
 813                 && ! S_ISDIR (s.st_mode))
 814               {
 815                 lang_add_input_file (optarg,
 816                                      lang_input_file_is_symbols_only_enum,
 817                                      (char *) NULL);
 818                 break;
 819               }
 820           }
 821           /* Fall through.  */
 822         case OPTION_RPATH:
 823           if (command_line.rpath == NULL)
 824             command_line.rpath = xstrdup (optarg);
 825           else
 826             {
 827               size_t rpath_len = strlen (command_line.rpath);
 828               size_t optarg_len = strlen (optarg);
 829               char *buf;
 830               char *cp = command_line.rpath;
 831
 832               /* First see whether OPTARG is already in the path.  */
 833               do
 834                 {
 835                   size_t idx = 0;
 836                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 837                     ++idx;
 838                   if (optarg[idx] == '\0'
 839                       && (cp[idx] == '\0' || cp[idx] == ':'))
 840                     /* We found it.  */
 841                     break;
 842
 843                   /* Not yet found.  */
 844                   cp = strchr (cp, ':');
 845                   if (cp != NULL)
 846                     ++cp;
 847                 }
 848               while (cp != NULL);
 849
 850               if (cp == NULL)
 851                 {
 852                   buf = xmalloc (rpath_len + optarg_len + 2);
 853                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 854                   free (command_line.rpath);
 855                   command_line.rpath = buf;
 856                 }
 857             }
 858           break;
 859         case OPTION_RPATH_LINK:
 860           if (command_line.rpath_link == NULL)
 861             command_line.rpath_link = xstrdup (optarg);
 862           else
 863             {
 864               char *buf;
 865
 866               buf = xmalloc (strlen (command_line.rpath_link)
 867                              + strlen (optarg)
 868                              + 2);
 869               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 870               free (command_line.rpath_link);
 871               command_line.rpath_link = buf;
 872             }
 873           break;
 874         case OPTION_RELAX:
 875           command_line.relax = true;
 876           break;
 877         case OPTION_RETAIN_SYMBOLS_FILE:
 878           add_keepsyms_file (optarg);
 879           break;
 880         case 'S':
 881           link_info.strip = strip_debugger;
 882           break;
 883         case 's':
 884           link_info.strip = strip_all;
 885           break;
 886         case OPTION_SHARED:
 887           if (config.has_shared)
 888             link_info.shared = true;
 889           else
 890             einfo (_("%P%F: -shared not supported\n"));
 891           break;
 892         case 'h':               /* Used on Solaris.  */
 893         case OPTION_SONAME:
 894           command_line.soname = optarg;
 895           break;
 896         case OPTION_SORT_COMMON:
 897           config.sort_common = true;
 898           break;
 899         case OPTION_STATS:
 900           config.stats = true;
 901           break;
 902         case OPTION_SYMBOLIC:
 903           link_info.symbolic = true;
 904           break;
 905         case 't':
 906           trace_files = true;
 907           break;
 908         case 'T':
 909           ldfile_open_command_file (optarg);
 910           parser_input = input_script;
 911           yyparse ();
 912           break;
 913         case OPTION_SECTION_START:
 914           {
 915             char *optarg2;
 916             char *sec_name;
 917             int len;
 918
 919             /* Check for <something>=<somthing>...  */
 920             optarg2 = strchr (optarg, '=');
 921             if (optarg2 == NULL)
 922               {
 923                 fprintf (stderr,
 924                          _("%s: Invalid argument to option \"--section-start\"\n"),
 925                          program_name);
 926                 xexit (1);
 927               }
 928
 929             optarg2++;
 930
 931             /* So far so good.  Are all the args present?  */
 932             if ((*optarg == '\0') || (*optarg2 == '\0'))
 933               {
 934                 fprintf (stderr,
 935                          _("%s: Missing argument(s) to option \"--section-start\"\n"),
 936                          program_name);
 937                 xexit (1);
 938               }
 939
 940             /* We must copy the section name as set_section_start
 941                doesn't do it for us.  */
 942             len = optarg2 - optarg;
 943             sec_name = xmalloc (len);
 944             memcpy (sec_name, optarg, len - 1);
 945             sec_name[len - 1] = 0;
 946
 947             /* Then set it...  */
 948             set_section_start (sec_name, optarg2);
 949           }
 950           break;
 951         case OPTION_TARGET_HELP:
 952           /* Mention any target specific options.  */
 953           ldemul_list_emulation_options (stdout);
 954           exit (0);
 955         case OPTION_TBSS:
 956           set_section_start (".bss", optarg);
 957           break;
 958         case OPTION_TDATA:
 959           set_section_start (".data", optarg);
 960           break;
 961         case OPTION_TTEXT:
 962           set_section_start (".text", optarg);
 963           break;
 964         case OPTION_TRADITIONAL_FORMAT:
 965           link_info.traditional_format = true;
 966           break;
 967         case OPTION_TASK_LINK:
 968           link_info.task_link = true;
 969           /* Fall through - do an implied -r option.  */
 970         case OPTION_UR:
 971           link_info.relocateable = true;
 972           config.build_constructors = true;
 973           config.magic_demand_paged = false;
 974           config.text_read_only = false;
 975           config.dynamic_link = false;
 976           break;
 977         case 'u':
 978           ldlang_add_undef (optarg);
 979           break;
 980         case OPTION_UNIQUE:
 981           if (optarg != NULL)
 982             lang_add_unique (optarg);
 983           else
 984             config.unique_orphan_sections = true;
 985           break;
 986         case OPTION_VERBOSE:
 987           ldversion (1);
 988           version_printed = true;
 989           trace_file_tries = true;
 990           break;
 991         case 'v':
 992           ldversion (0);
 993           version_printed = true;
 994           break;
 995         case 'V':
 996           ldversion (1);
 997           version_printed = true;
 998           break;
 999         case OPTION_VERSION:
1000           /* This output is intended to follow the GNU standards document.  */
1001           printf ("GNU ld %s\n", ld_program_version);
1002           printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
1003           printf (_("\
1004 This program is free software; you may redistribute it under the terms of\n\
1005 the GNU General Public License.  This program has absolutely no warranty.\n"));
1006           {
1007             ld_emulation_xfer_type **ptr = ld_emulations;
1008
1009             printf (_("  Supported emulations:\n"));
1010             while (*ptr)
1011               {
1012                 printf ("   %s\n", (*ptr)->emulation_name);
1013                 ptr++;
1014               }
1015           }
1016           xexit (0);
1017           break;
1018         case OPTION_VERSION_SCRIPT:
1019           /* This option indicates a small script that only specifies
1020              version information.  Read it, but don't assume that
1021              we've seen a linker script.  */
1022           {
1023             FILE * hold_script_handle;
1024
1025             hold_script_handle = saved_script_handle;
1026             ldfile_open_command_file (optarg);
1027             saved_script_handle = hold_script_handle;
1028             parser_input = input_version_script;
1029             yyparse ();
1030           }
1031           break;
1032         case OPTION_VERSION_EXPORTS_SECTION:
1033           /* This option records a version symbol to be applied to the
1034              symbols listed for export to be found in the object files
1035              .exports sections.  */
1036           command_line.version_exports_section = optarg;
1037           break;
1038         case OPTION_WARN_COMMON:
1039           config.warn_common = true;
1040           break;
1041         case OPTION_WARN_CONSTRUCTORS:
1042           config.warn_constructors = true;
1043           break;
1044         case OPTION_WARN_FATAL:
1045           config.fatal_warnings = true;
1046           break;
1047         case OPTION_WARN_MULTIPLE_GP:
1048           config.warn_multiple_gp = true;
1049           break;
1050         case OPTION_WARN_ONCE:
1051           config.warn_once = true;
1052           break;
1053         case OPTION_WARN_SECTION_ALIGN:
1054           config.warn_section_align = true;
1055           break;
1056         case OPTION_WHOLE_ARCHIVE:
1057           whole_archive = true;
1058           break;
1059         case OPTION_WRAP:
1060           add_wrap (optarg);
1061           break;
1062         case OPTION_DISCARD_NONE:
1063           link_info.discard = discard_none;
1064           break;
1065         case 'X':
1066           link_info.discard = discard_l;
1067           break;
1068         case 'x':
1069           link_info.discard = discard_all;
1070           break;
1071         case 'Y':
1072           if (strncmp (optarg, "P,", 2) == 0)
1073             optarg += 2;
1074           default_dirlist = xstrdup (optarg);
1075           break;
1076         case 'y':
1077           add_ysym (optarg);
1078           break;
1079         case OPTION_SPARE_DYNAMIC_TAGS:
1080           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1081           break;
1082         case OPTION_SPLIT_BY_RELOC:
1083           if (optarg != NULL)
1084             config.split_by_reloc = strtoul (optarg, NULL, 0);
1085           else
1086             config.split_by_reloc = 32768;
1087           break;
1088         case OPTION_SPLIT_BY_FILE:
1089           if (optarg != NULL)
1090             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1091           else
1092             config.split_by_file = 1;
1093           break;
1094         case OPTION_CHECK_SECTIONS:
1095           command_line.check_section_addresses = true;
1096           break;
1097         case OPTION_NO_CHECK_SECTIONS:
1098           command_line.check_section_addresses = false;
1099           break;
1100         case '(':
1101           if (ingroup)
1102             {
1103               fprintf (stderr,
1104                        _("%s: may not nest groups (--help for usage)\n"),
1105                        program_name);
1106               xexit (1);
1107             }
1108           lang_enter_group ();
1109           ingroup = 1;
1110           break;
1111         case ')':
1112           if (! ingroup)
1113             {
1114               fprintf (stderr,
1115                        _("%s: group ended before it began (--help for usage)\n"),
1116                        program_name);
1117               xexit (1);
1118             }
1119           lang_leave_group ();
1120           ingroup = 0;
1121           break;
1122         case OPTION_MPC860C0:
1123           link_info.mpc860c0 = 20;      /* default value (in bytes) */
1124           if (optarg)
1125             {
1126               unsigned words;
1127
1128               words = is_num (optarg, 1, 10, 0);
1129               if (words == 0)
1130                 {
1131                   fprintf (stderr,
1132                            _("%s: Invalid argument to option \"mpc860c0\"\n"),
1133                            program_name);
1134                   xexit (1);
1135                 }
1136               link_info.mpc860c0 = words * 4;   /* convert words to bytes */
1137             }
1138           command_line.relax = true;
1139           break;
1140
1141         case OPTION_INIT:
1142           link_info.init_function = optarg;
1143           break;
1144
1145         case OPTION_FINI:
1146           link_info.fini_function = optarg;
1147           break;
1148         }
1149     }
1150
1151   if (ingroup)
1152     lang_leave_group ();
1153
1154   if (default_dirlist != NULL)
1155     set_default_dirlist (default_dirlist);
1156
1157 }
1158
1159 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1160    library search path.  */
1161
1162 static void
1163 set_default_dirlist (dirlist_ptr)
1164      char *dirlist_ptr;
1165 {
1166   char *p;
1167
1168   while (1)
1169     {
1170       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1171       if (p != NULL)
1172         *p = '\0';
1173       if (*dirlist_ptr != '\0')
1174         ldfile_add_library_path (dirlist_ptr, true);
1175       if (p == NULL)
1176         break;
1177       dirlist_ptr = p + 1;
1178     }
1179 }
1180
1181 static void
1182 set_section_start (sect, valstr)
1183      char *sect, *valstr;
1184 {
1185   const char *end;
1186   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1187   if (*end)
1188     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1189   lang_section_start (sect, exp_intop (val));
1190 }
1191 \f
1192 /* Print help messages for the options.  */
1193
1194 static void
1195 help ()
1196 {
1197   unsigned i;
1198   const char **targets, **pp;
1199
1200   printf (_("Usage: %s [options] file...\n"), program_name);
1201
1202   printf (_("Options:\n"));
1203   for (i = 0; i < OPTION_COUNT; i++)
1204     {
1205       if (ld_options[i].doc != NULL)
1206         {
1207           boolean comma;
1208           int len;
1209           unsigned j;
1210
1211           printf ("  ");
1212
1213           comma = false;
1214           len = 2;
1215
1216           j = i;
1217           do
1218             {
1219               if (ld_options[j].shortopt != '\0'
1220                   && ld_options[j].control != NO_HELP)
1221                 {
1222                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1223                   len += (comma ? 2 : 0) + 2;
1224                   if (ld_options[j].arg != NULL)
1225                     {
1226                       if (ld_options[j].opt.has_arg != optional_argument)
1227                         {
1228                           printf (" ");
1229                           ++len;
1230                         }
1231                       printf ("%s", _(ld_options[j].arg));
1232                       len += strlen (_(ld_options[j].arg));
1233                     }
1234                   comma = true;
1235                 }
1236               ++j;
1237             }
1238           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1239
1240           j = i;
1241           do
1242             {
1243               if (ld_options[j].opt.name != NULL
1244                   && ld_options[j].control != NO_HELP)
1245                 {
1246                   int two_dashes =
1247                     (ld_options[j].control == TWO_DASHES
1248                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1249
1250                   printf ("%s-%s%s",
1251                           comma ? ", " : "",
1252                           two_dashes ? "-" : "",
1253                           ld_options[j].opt.name);
1254                   len += ((comma ? 2 : 0)
1255                           + 1
1256                           + (two_dashes ? 1 : 0)
1257                           + strlen (ld_options[j].opt.name));
1258                   if (ld_options[j].arg != NULL)
1259                     {
1260                       printf (" %s", _(ld_options[j].arg));
1261                       len += 1 + strlen (_(ld_options[j].arg));
1262                     }
1263                   comma = true;
1264                 }
1265               ++j;
1266             }
1267           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1268
1269           if (len >= 30)
1270             {
1271               printf ("\n");
1272               len = 0;
1273             }
1274
1275           for (; len < 30; len++)
1276             putchar (' ');
1277
1278           printf ("%s\n", _(ld_options[i].doc));
1279         }
1280     }
1281
1282   /* Note: Various tools (such as libtool) depend upon the
1283      format of the listings below - do not change them.  */
1284   /* xgettext:c-format */
1285   printf (_("%s: supported targets:"), program_name);
1286   targets = bfd_target_list ();
1287   for (pp = targets; *pp != NULL; pp++)
1288     printf (" %s", *pp);
1289   free (targets);
1290   printf ("\n");
1291
1292   /* xgettext:c-format */
1293   printf (_("%s: supported emulations: "), program_name);
1294   ldemul_list_emulations (stdout);
1295   printf ("\n");
1296
1297   /* xgettext:c-format */
1298   printf (_("%s: emulation specific options:\n"), program_name);
1299   ldemul_list_emulation_options (stdout);
1300   printf ("\n");
1301
1302   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1303 }