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