ld/lexsup.c

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