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 #if 0
 241   { {NULL, required_argument, NULL, '\0'},
 242       'z', N_("KEYWORD"), N_("Ignored for Solaris compatibility"), ONE_DASH },
 243 #endif
 244   { {"start-group", no_argument, NULL, '('},
 245       '(', NULL, N_("Start a group"), TWO_DASHES },
 246   { {"end-group", no_argument, NULL, ')'},
 247       ')', NULL, N_("End a group"), TWO_DASHES },
 248   { {"assert", required_argument, NULL, OPTION_ASSERT},
 249       '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 250   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 251       '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 252   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 253       '\0', NULL, NULL, ONE_DASH },
 254   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 255       '\0', NULL, NULL, ONE_DASH },
 256   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 257       '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 258   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 259       '\0', NULL, NULL, ONE_DASH },
 260   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 261       '\0', NULL, NULL, ONE_DASH },
 262   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 263       '\0', NULL, NULL, ONE_DASH },
 264   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 265       '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 266   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 267       '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
 268   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 269       '\0', NULL, N_("Do not check section addresses for overlaps"),
 270       TWO_DASHES },
 271   { {"cref", no_argument, NULL, OPTION_CREF},
 272       '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 273   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 274       '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 275   { {"demangle", no_argument, NULL, OPTION_DEMANGLE},
 276       '\0', NULL, N_("Demangle symbol names"), TWO_DASHES },
 277   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 278       '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
 279   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 280       '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 281   { {"fini", required_argument, NULL, OPTION_FINI},
 282      '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 283   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 284       '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 285   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 286       '\0', NULL, N_("Remove unused sections (on some targets)"),
 287       TWO_DASHES },
 288   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 289       '\0', NULL, N_("Don't remove unused sections (default)"),
 290       TWO_DASHES },
 291   { {"help", no_argument, NULL, OPTION_HELP},
 292       '\0', NULL, N_("Print option help"), TWO_DASHES },
 293   { {"init", required_argument, NULL, OPTION_INIT},
 294      '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 295   { {"Map", required_argument, NULL, OPTION_MAP},
 296       '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 297   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 298       '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 299   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 300       '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 301   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 302      '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
 303   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 304       '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 305   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 306       '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 307   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 308       '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
 309   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 310       '\0', NULL, NULL, NO_HELP },
 311   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 312       '\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES },
 313   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 314       '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 315   { {"relax", no_argument, NULL, OPTION_RELAX},
 316       '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 317   { {"retain-symbols-file", required_argument, NULL,
 318        OPTION_RETAIN_SYMBOLS_FILE},
 319       '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 320   { {"rpath", required_argument, NULL, OPTION_RPATH},
 321       '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 322   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 323       '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
 324   { {"shared", no_argument, NULL, OPTION_SHARED},
 325       '\0', NULL, N_("Create a shared library"), ONE_DASH },
 326   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 327       '\0', NULL, NULL, ONE_DASH },
 328   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 329       '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 330   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 331       '\0', NULL, NULL, NO_HELP },
 332   { {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
 333       '\0', NULL, N_("Split output sections for each file"), TWO_DASHES },
 334   { {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
 335       '\0', N_("COUNT"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
 336   { {"stats", no_argument, NULL, OPTION_STATS},
 337       '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 338   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 339       '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 340   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 341       '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 342   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 343       '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
 344   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 345       '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 346   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 347       '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 348   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 349       '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 350   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 351       '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 352   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 353       '\0', NULL, NULL, NO_HELP },
 354   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 355       '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 356   { {"version-exports-section", required_argument, NULL,
 357      OPTION_VERSION_EXPORTS_SECTION },
 358     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
 359     TWO_DASHES },
 360   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 361       '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 362   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 363       '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 364       TWO_DASHES },
 365   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 366       '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 367   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 368       '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 369   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 370       '\0', NULL, N_("Warn if start of section changes due to alignment"),
 371       TWO_DASHES },
 372   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 373       '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
 374   { {"wrap", required_argument, NULL, OPTION_WRAP},
 375       '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 376   { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
 377       '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
 378 };
 379
 380 #define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
 381
 382 /* Test STRING for containing a string of digits that form a number
 383    between MIN and MAX.  The return value is the number or ERR.  */
 384
 385 static int
 386 is_num (string, min, max, err)
 387      const char *string;
 388      int min;
 389      int max;
 390      int err;
 391 {
 392   int result = 0;
 393
 394   for (; *string; ++string)
 395     {
 396       if (! isdigit (*string))
 397         {
 398           result = err;
 399           break;
 400         }
 401       result = result * 10 + (*string - '0');
 402     }
 403   if (result < min || result > max)
 404     result = err;
 405
 406   return result;
 407 }
 408
 409 void
 410 parse_args (argc, argv)
 411      int argc;
 412      char **argv;
 413 {
 414   int i, is, il;
 415   int ingroup = 0;
 416   char *default_dirlist = NULL;
 417   char shortopts[OPTION_COUNT * 3 + 2];
 418   struct option longopts[OPTION_COUNT + 1];
 419   int last_optind;
 420
 421   /* Starting the short option string with '-' is for programs that
 422      expect options and other ARGV-elements in any order and that care about
 423      the ordering of the two.  We describe each non-option ARGV-element
 424      as if it were the argument of an option with character code 1.  */
 425   shortopts[0] = '-';
 426   is = 1;
 427   il = 0;
 428   for (i = 0; i < OPTION_COUNT; i++)
 429     {
 430       if (ld_options[i].shortopt != '\0')
 431         {
 432           shortopts[is] = ld_options[i].shortopt;
 433           ++is;
 434           if (ld_options[i].opt.has_arg == required_argument
 435               || ld_options[i].opt.has_arg == optional_argument)
 436             {
 437               shortopts[is] = ':';
 438               ++is;
 439               if (ld_options[i].opt.has_arg == optional_argument)
 440                 {
 441                   shortopts[is] = ':';
 442                   ++is;
 443                 }
 444             }
 445         }
 446       if (ld_options[i].opt.name != NULL)
 447         {
 448           longopts[il] = ld_options[i].opt;
 449           ++il;
 450         }
 451     }
 452   shortopts[is] = '\0';
 453   longopts[il].name = NULL;
 454
 455   /* The -G option is ambiguous on different platforms.  Sometimes it
 456      specifies the largest data size to put into the small data
 457      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 458      the first form takes an argument, while the second does not.
 459
 460      We need to permit the --shared form because on some platforms,
 461      such as Solaris, gcc -shared will pass -G to the linker.
 462
 463      To permit either usage, we look through the argument list.  If we
 464      find -G not followed by a number, we change it into --shared.
 465      This will work for most normal cases.  */
 466   for (i = 1; i < argc; i++)
 467     if (strcmp (argv[i], "-G") == 0
 468         && (i + 1 >= argc
 469             || ! isdigit ((unsigned char) argv[i + 1][0])))
 470       argv[i] = (char *) "--shared";
 471
 472   /* Because we permit long options to start with a single dash, and
 473      we have a --library option, and the -l option is conventionally
 474      used with an immediately following argument, we can have bad
 475      results if somebody tries to use -l with a library whose name
 476      happens to start with "ibrary", as in -li.  We avoid problems by
 477      simply turning -l into --library.  This means that users will
 478      have to use two dashes in order to use --library, which is OK
 479      since that's how it is documented.
 480
 481      FIXME: It's possible that this problem can arise for other short
 482      options as well, although the user does always have the recourse
 483      of adding a space between the option and the argument.  */
 484   for (i = 1; i < argc; i++)
 485     {
 486       if (argv[i][0] == '-'
 487           && argv[i][1] == 'l'
 488           && argv[i][2] != '\0')
 489         {
 490           char *n;
 491
 492           n = (char *) xmalloc (strlen (argv[i]) + 20);
 493           sprintf (n, "--library=%s", argv[i] + 2);
 494           argv[i] = n;
 495         }
 496     }
 497
 498   last_optind = -1;
 499   while (1)
 500     {
 501       int longind;
 502       int optc;
 503
 504       /* Using last_optind lets us avoid calling ldemul_parse_args
 505          multiple times on a single option, which would lead to
 506          confusion in the internal static variables maintained by
 507          getopt.  This could otherwise happen for an argument like
 508          -nx, in which the -n is parsed as a single option, and we
 509          loop around to pick up the -x.  */
 510       if (optind != last_optind)
 511         {
 512           if (ldemul_parse_args (argc, argv))
 513             continue;
 514           last_optind = optind;
 515         }
 516
 517       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 518          can indicate a long option.  */
 519       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 520
 521       if (optc == -1)
 522         break;
 523       switch (optc)
 524         {
 525         default:
 526           fprintf (stderr,
 527                    _("%s: use the --help option for usage information\n"),
 528                    program_name);
 529           xexit (1);
 530         case 1:                 /* File name.  */
 531           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 532                                (char *) NULL);
 533           break;
 534
 535         case OPTION_IGNORE:
 536           break;
 537         case 'a':
 538           /* For HP/UX compatibility.  Actually -a shared should mean
 539              ``use only shared libraries'' but, then, we don't
 540              currently support shared libraries on HP/UX anyhow.  */
 541           if (strcmp (optarg, "archive") == 0)
 542             config.dynamic_link = false;
 543           else if (strcmp (optarg, "shared") == 0
 544                    || strcmp (optarg, "default") == 0)
 545             config.dynamic_link = true;
 546           else
 547             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 548           break;
 549         case OPTION_ASSERT:
 550           /* FIXME: We just ignore these, but we should handle them.  */
 551           if (strcmp (optarg, "definitions") == 0)
 552             ;
 553           else if (strcmp (optarg, "nodefinitions") == 0)
 554             ;
 555           else if (strcmp (optarg, "nosymbolic") == 0)
 556             ;
 557           else if (strcmp (optarg, "pure-text") == 0)
 558             ;
 559           else
 560             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 561           break;
 562         case 'A':
 563           ldfile_add_arch (optarg);
 564           break;
 565         case 'b':
 566           lang_add_target (optarg);
 567           break;
 568         case 'c':
 569           ldfile_open_command_file (optarg);
 570           parser_input = input_mri_script;
 571           yyparse ();
 572           break;
 573         case OPTION_CALL_SHARED:
 574           config.dynamic_link = true;
 575           break;
 576         case OPTION_NON_SHARED:
 577           config.dynamic_link = false;
 578           break;
 579         case OPTION_CREF:
 580           command_line.cref = true;
 581           link_info.notice_all = true;
 582           break;
 583         case 'd':
 584           command_line.force_common_definition = true;
 585           break;
 586         case OPTION_DEFSYM:
 587           lex_string = optarg;
 588           lex_redirect (optarg);
 589           parser_input = input_defsym;
 590           parsing_defsym = 1;
 591           yyparse ();
 592           parsing_defsym = 0;
 593           lex_string = NULL;
 594           break;
 595         case OPTION_DEMANGLE:
 596           demangling = true;
 597           break;
 598         case OPTION_DYNAMIC_LINKER:
 599           command_line.interpreter = optarg;
 600           break;
 601         case OPTION_EB:
 602           command_line.endian = ENDIAN_BIG;
 603           break;
 604         case OPTION_EL:
 605           command_line.endian = ENDIAN_LITTLE;
 606           break;
 607         case OPTION_EMBEDDED_RELOCS:
 608           command_line.embedded_relocs = true;
 609           break;
 610         case OPTION_EXPORT_DYNAMIC:
 611         case 'E': /* HP/UX compatibility.  */
 612           command_line.export_dynamic = true;
 613           break;
 614         case 'e':
 615           lang_add_entry (optarg, true);
 616           break;
 617         case 'f':
 618           if (command_line.auxiliary_filters == NULL)
 619             {
 620               command_line.auxiliary_filters =
 621                 (char **) xmalloc (2 * sizeof (char *));
 622               command_line.auxiliary_filters[0] = optarg;
 623               command_line.auxiliary_filters[1] = NULL;
 624             }
 625           else
 626             {
 627               int c;
 628               char **p;
 629
 630               c = 0;
 631               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 632                 ++c;
 633               command_line.auxiliary_filters =
 634                 (char **) xrealloc (command_line.auxiliary_filters,
 635                                     (c + 2) * sizeof (char *));
 636               command_line.auxiliary_filters[c] = optarg;
 637               command_line.auxiliary_filters[c + 1] = NULL;
 638             }
 639           break;
 640         case 'F':
 641           command_line.filter_shlib = optarg;
 642           break;
 643         case OPTION_FORCE_EXE_SUFFIX:
 644           command_line.force_exe_suffix = true;
 645           break;
 646         case 'G':
 647           {
 648             char *end;
 649             g_switch_value = strtoul (optarg, &end, 0);
 650             if (*end)
 651               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 652           }
 653           break;
 654         case 'g':
 655           /* Ignore.  */
 656           break;
 657         case OPTION_GC_SECTIONS:
 658           command_line.gc_sections = true;
 659           break;
 660         case OPTION_HELP:
 661           help ();
 662           xexit (0);
 663           break;
 664         case 'L':
 665           ldfile_add_library_path (optarg, true);
 666           break;
 667         case 'l':
 668           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 669                                (char *) NULL);
 670           break;
 671         case 'M':
 672           config.map_filename = "-";
 673           break;
 674         case 'm':
 675           /* Ignore.  Was handled in a pre-parse.   */
 676           break;
 677         case OPTION_MAP:
 678           config.map_filename = optarg;
 679           break;
 680         case 'N':
 681           config.text_read_only = false;
 682           config.magic_demand_paged = false;
 683           config.dynamic_link = false;
 684           break;
 685         case 'n':
 686           config.magic_demand_paged = false;
 687           config.dynamic_link = false;
 688           break;
 689         case OPTION_NO_DEMANGLE:
 690           demangling = false;
 691           break;
 692         case OPTION_NO_GC_SECTIONS:
 693           command_line.gc_sections = false;
 694           break;
 695         case OPTION_NO_KEEP_MEMORY:
 696           link_info.keep_memory = false;
 697           break;
 698         case OPTION_NO_UNDEFINED:
 699           link_info.no_undefined = true;
 700           break;
 701         case OPTION_NO_WARN_MISMATCH:
 702           command_line.warn_mismatch = false;
 703           break;
 704         case OPTION_NOINHIBIT_EXEC:
 705           force_make_executable = true;
 706           break;
 707         case OPTION_NO_WHOLE_ARCHIVE:
 708           whole_archive = false;
 709           break;
 710         case 'O':
 711           /* FIXME "-O<non-digits> <value>" used to set the address of
 712              section <non-digits>.  Was this for compatibility with
 713              something, or can we create a new option to do that
 714              (with a syntax similar to -defsym)?
 715              getopt can't handle two args to an option without kludges.  */
 716
 717           /* Enable optimizations of output files.  */
 718           link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
 719           break;
 720         case 'o':
 721           lang_add_output (optarg, 0);
 722           break;
 723         case OPTION_OFORMAT:
 724           lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
 725           break;
 726         case 'q':
 727           link_info.emitrelocations = true;
 728           break;
 729         case 'i':
 730         case 'r':
 731           link_info.relocateable = true;
 732           config.build_constructors = false;
 733           config.magic_demand_paged = false;
 734           config.text_read_only = false;
 735           config.dynamic_link = false;
 736           break;
 737         case 'R':
 738           /* The GNU linker traditionally uses -R to mean to include
 739              only the symbols from a file.  The Solaris linker uses -R
 740              to set the path used by the runtime linker to find
 741              libraries.  This is the GNU linker -rpath argument.  We
 742              try to support both simultaneously by checking the file
 743              named.  If it is a directory, rather than a regular file,
 744              we assume -rpath was meant.  */
 745           {
 746             struct stat s;
 747
 748             if (stat (optarg, &s) >= 0
 749                 && ! S_ISDIR (s.st_mode))
 750               {
 751                 lang_add_input_file (optarg,
 752                                      lang_input_file_is_symbols_only_enum,
 753                                      (char *) NULL);
 754                 break;
 755               }
 756           }
 757           /* Fall through.  */
 758         case OPTION_RPATH:
 759           if (command_line.rpath == NULL)
 760             command_line.rpath = buystring (optarg);
 761           else
 762             {
 763               size_t rpath_len = strlen (command_line.rpath);
 764               size_t optarg_len = strlen (optarg);
 765               char *buf;
 766               char *cp = command_line.rpath;
 767
 768               /* First see whether OPTARG is already in the path.  */
 769               do
 770                 {
 771                   size_t idx = 0;
 772                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
 773                     ++idx;
 774                   if (optarg[idx] == '\0'
 775                       && (cp[idx] == '\0' || cp[idx] == ':'))
 776                     /* We found it.  */
 777                     break;
 778
 779                   /* Not yet found.  */
 780                   cp = strchr (cp, ':');
 781                   if (cp != NULL)
 782                     ++cp;
 783                 }
 784               while (cp != NULL);
 785
 786               if (cp == NULL)
 787                 {
 788                   buf = xmalloc (rpath_len + optarg_len + 2);
 789                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
 790                   free (command_line.rpath);
 791                   command_line.rpath = buf;
 792                 }
 793             }
 794           break;
 795         case OPTION_RPATH_LINK:
 796           if (command_line.rpath_link == NULL)
 797             command_line.rpath_link = buystring (optarg);
 798           else
 799             {
 800               char *buf;
 801
 802               buf = xmalloc (strlen (command_line.rpath_link)
 803                              + strlen (optarg)
 804                              + 2);
 805               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
 806               free (command_line.rpath_link);
 807               command_line.rpath_link = buf;
 808             }
 809           break;
 810         case OPTION_RELAX:
 811           command_line.relax = true;
 812           break;
 813         case OPTION_RETAIN_SYMBOLS_FILE:
 814           add_keepsyms_file (optarg);
 815           break;
 816         case 'S':
 817           link_info.strip = strip_debugger;
 818           break;
 819         case 's':
 820           link_info.strip = strip_all;
 821           break;
 822         case OPTION_SHARED:
 823           if (config.has_shared)
 824             link_info.shared = true;
 825           else
 826             einfo (_("%P%F: -shared not supported\n"));
 827           break;
 828         case 'h':               /* Used on Solaris.  */
 829         case OPTION_SONAME:
 830           command_line.soname = optarg;
 831           break;
 832         case OPTION_SORT_COMMON:
 833           config.sort_common = true;
 834           break;
 835         case OPTION_STATS:
 836           config.stats = true;
 837           break;
 838         case OPTION_SYMBOLIC:
 839           link_info.symbolic = true;
 840           break;
 841         case 't':
 842           trace_files = true;
 843           break;
 844         case 'T':
 845           ldfile_open_command_file (optarg);
 846           parser_input = input_script;
 847           yyparse ();
 848           break;
 849         case OPTION_SECTION_START:
 850           {
 851             char *optarg2;
 852             char *sec_name;
 853             int len;
 854
 855             /* Check for <something>=<somthing>...  */
 856             optarg2 = strchr (optarg, '=');
 857             if (optarg2 == NULL)
 858               {
 859                 fprintf (stderr,
 860                          _("%s: Invalid argument to option \"--section-start\"\n"),
 861                          program_name);
 862                 xexit (1);
 863               }
 864
 865             optarg2 ++;
 866
 867             /* So far so good.  Are all the args present?  */
 868             if ((*optarg == '\0') || (*optarg2 == '\0'))
 869               {
 870                 fprintf (stderr,
 871                          _("%s: Missing argument(s) to option \"--section-start\"\n"),
 872                          program_name);
 873                 xexit (1);
 874               }
 875
 876             /* We must copy the section name as set_section_start
 877                doesn't do it for us.  */
 878             len = optarg2 - optarg;
 879             sec_name = xmalloc (len);
 880             memcpy (sec_name, optarg, len - 1);
 881             sec_name[len - 1] = 0;
 882
 883             /* Then set it...  */
 884             set_section_start (sec_name, optarg2);
 885           }
 886           break;
 887         case OPTION_TBSS:
 888           set_section_start (".bss", optarg);
 889           break;
 890         case OPTION_TDATA:
 891           set_section_start (".data", optarg);
 892           break;
 893         case OPTION_TTEXT:
 894           set_section_start (".text", optarg);
 895           break;
 896         case OPTION_TRADITIONAL_FORMAT:
 897           link_info.traditional_format = true;
 898           break;
 899         case OPTION_TASK_LINK:
 900           link_info.task_link = true;
 901           /* Fall through - do an implied -r option.  */
 902         case OPTION_UR:
 903           link_info.relocateable = true;
 904           config.build_constructors = true;
 905           config.magic_demand_paged = false;
 906           config.text_read_only = false;
 907           config.dynamic_link = false;
 908           break;
 909         case 'u':
 910           ldlang_add_undef (optarg);
 911           break;
 912         case OPTION_VERBOSE:
 913           ldversion (1);
 914           version_printed = true;
 915           trace_file_tries = true;
 916           break;
 917         case 'v':
 918           ldversion (0);
 919           version_printed = true;
 920           break;
 921         case 'V':
 922           ldversion (1);
 923           version_printed = true;
 924           break;
 925         case OPTION_VERSION:
 926           /* This output is intended to follow the GNU standards document.  */
 927           printf ("GNU ld %s\n", ld_program_version);
 928           printf (_("Copyright 2000 Free Software Foundation, Inc.\n"));
 929           printf (_("\
 930 This program is free software; you may redistribute it under the terms of\n\
 931 the GNU General Public License.  This program has absolutely no warranty.\n"));
 932           {
 933             ld_emulation_xfer_type **ptr = ld_emulations;
 934
 935             printf (_("  Supported emulations:\n"));
 936             while (*ptr)
 937               {
 938                 printf ("   %s\n", (*ptr)->emulation_name);
 939                 ptr++;
 940               }
 941           }
 942           xexit (0);
 943           break;
 944         case OPTION_VERSION_SCRIPT:
 945           /* This option indicates a small script that only specifies
 946              version information.  Read it, but don't assume that
 947              we've seen a linker script.  */
 948           {
 949             boolean hold_had_script;
 950
 951             hold_had_script = had_script;
 952             ldfile_open_command_file (optarg);
 953             had_script = hold_had_script;
 954             parser_input = input_version_script;
 955             yyparse ();
 956           }
 957           break;
 958         case OPTION_VERSION_EXPORTS_SECTION:
 959           /* This option records a version symbol to be applied to the
 960              symbols listed for export to be found in the object files
 961              .exports sections.  */
 962           command_line.version_exports_section = optarg;
 963           break;
 964         case OPTION_WARN_COMMON:
 965           config.warn_common = true;
 966           break;
 967         case OPTION_WARN_CONSTRUCTORS:
 968           config.warn_constructors = true;
 969           break;
 970         case OPTION_WARN_MULTIPLE_GP:
 971           config.warn_multiple_gp = true;
 972           break;
 973         case OPTION_WARN_ONCE:
 974           config.warn_once = true;
 975           break;
 976         case OPTION_WARN_SECTION_ALIGN:
 977           config.warn_section_align = true;
 978           break;
 979         case OPTION_WHOLE_ARCHIVE:
 980           whole_archive = true;
 981           break;
 982         case OPTION_WRAP:
 983           add_wrap (optarg);
 984           break;
 985         case 'X':
 986           link_info.discard = discard_l;
 987           break;
 988         case 'x':
 989           link_info.discard = discard_all;
 990           break;
 991         case 'Y':
 992           if (strncmp (optarg, "P,", 2) == 0)
 993             optarg += 2;
 994           default_dirlist = xstrdup (optarg);
 995           break;
 996         case 'y':
 997           add_ysym (optarg);
 998           break;
 999 #if 0
1000         case 'z':
1001           /* We accept and ignore this option for Solaris
1002              compatibility.  Actually, on Solaris, optarg is not
1003              ignored.  Someday we should handle it correctly.  FIXME.  */
1004           break;
1005 #endif
1006         case OPTION_SPLIT_BY_RELOC:
1007           config.split_by_reloc = strtoul (optarg, NULL, 0);
1008           break;
1009         case OPTION_SPLIT_BY_FILE:
1010           config.split_by_file = true;
1011           break;
1012         case OPTION_CHECK_SECTIONS:
1013           command_line.check_section_addresses = true;
1014           break;
1015         case OPTION_NO_CHECK_SECTIONS:
1016           command_line.check_section_addresses = false;
1017           break;
1018         case '(':
1019           if (ingroup)
1020             {
1021               fprintf (stderr,
1022                        _("%s: may not nest groups (--help for usage)\n"),
1023                        program_name);
1024               xexit (1);
1025             }
1026           lang_enter_group ();
1027           ingroup = 1;
1028           break;
1029         case ')':
1030           if (! ingroup)
1031             {
1032               fprintf (stderr,
1033                        _("%s: group ended before it began (--help for usage)\n"),
1034                        program_name);
1035               xexit (1);
1036             }
1037           lang_leave_group ();
1038           ingroup = 0;
1039           break;
1040       case OPTION_MPC860C0:
1041           link_info.mpc860c0 = 20;      /* default value (in bytes) */
1042           if (optarg)
1043             {
1044               unsigned words;
1045
1046               words = is_num (optarg, 1, 10, 0);
1047               if (words == 0)
1048                 {
1049                   fprintf (stderr,
1050                            _("%s: Invalid argument to option \"mpc860c0\"\n"),
1051                            program_name);
1052                   xexit (1);
1053                 }
1054               link_info.mpc860c0 = words * 4;   /* convert words to bytes */
1055             }
1056           command_line.relax = true;
1057           break;
1058
1059         case OPTION_INIT:
1060           link_info.init_function = optarg;
1061           break;
1062
1063         case OPTION_FINI:
1064           link_info.fini_function = optarg;
1065           break;
1066         }
1067     }
1068
1069   if (ingroup)
1070     lang_leave_group ();
1071
1072   if (default_dirlist != NULL)
1073     set_default_dirlist (default_dirlist);
1074
1075 }
1076
1077 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1078    library search path.  */
1079
1080 static void
1081 set_default_dirlist (dirlist_ptr)
1082      char *dirlist_ptr;
1083 {
1084   char *p;
1085
1086   while (1)
1087     {
1088       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1089       if (p != NULL)
1090         *p = '\0';
1091       if (*dirlist_ptr != '\0')
1092         ldfile_add_library_path (dirlist_ptr, true);
1093       if (p == NULL)
1094         break;
1095       dirlist_ptr = p + 1;
1096     }
1097 }
1098
1099 static void
1100 set_section_start (sect, valstr)
1101      char *sect, *valstr;
1102 {
1103   const char *end;
1104   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1105   if (*end)
1106     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1107   lang_section_start (sect, exp_intop (val));
1108 }
1109 \f
1110 /* Print help messages for the options.  */
1111
1112 static void
1113 help ()
1114 {
1115   int i;
1116   const char **targets, **pp;
1117
1118   printf (_("Usage: %s [options] file...\n"), program_name);
1119
1120   printf (_("Options:\n"));
1121   for (i = 0; i < OPTION_COUNT; i++)
1122     {
1123       if (ld_options[i].doc != NULL)
1124         {
1125           boolean comma;
1126           int len;
1127           int j;
1128
1129           printf ("  ");
1130
1131           comma = false;
1132           len = 2;
1133
1134           j = i;
1135           do
1136             {
1137               if (ld_options[j].shortopt != '\0'
1138                   && ld_options[j].control != NO_HELP)
1139                 {
1140                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1141                   len += (comma ? 2 : 0) + 2;
1142                   if (ld_options[j].arg != NULL)
1143                     {
1144                       if (ld_options[j].opt.has_arg != optional_argument)
1145                         {
1146                           printf (" ");
1147                           ++len;
1148                         }
1149                       printf ("%s", _(ld_options[j].arg));
1150                       len += strlen (_(ld_options[j].arg));
1151                     }
1152                   comma = true;
1153                 }
1154               ++j;
1155             }
1156           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1157
1158           j = i;
1159           do
1160             {
1161               if (ld_options[j].opt.name != NULL
1162                   && ld_options[j].control != NO_HELP)
1163                 {
1164                   printf ("%s-%s%s",
1165                           comma ? ", " : "",
1166                           ld_options[j].control == TWO_DASHES ? "-" : "",
1167                           ld_options[j].opt.name);
1168                   len += ((comma ? 2 : 0)
1169                           + 1
1170                           + (ld_options[j].control == TWO_DASHES ? 1 : 0)
1171                           + strlen (ld_options[j].opt.name));
1172                   if (ld_options[j].arg != NULL)
1173                     {
1174                       printf (" %s", _(ld_options[j].arg));
1175                       len += 1 + strlen (_(ld_options[j].arg));
1176                     }
1177                   comma = true;
1178                 }
1179               ++j;
1180             }
1181           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1182
1183           if (len >= 30)
1184             {
1185               printf ("\n");
1186               len = 0;
1187             }
1188
1189           for (; len < 30; len++)
1190             putchar (' ');
1191
1192           printf ("%s\n", _(ld_options[i].doc));
1193         }
1194     }
1195
1196   /* Note: Various tools (such as libtool) depend upon the
1197      format of the listings below - do not change them.  */
1198   /* xgettext:c-format */
1199   printf (_("%s: supported targets:"), program_name);
1200   targets = bfd_target_list ();
1201   for (pp = targets; *pp != NULL; pp++)
1202     printf (" %s", *pp);
1203   free (targets);
1204   printf ("\n");
1205
1206   /* xgettext:c-format */
1207   printf (_("%s: supported emulations: "), program_name);
1208   ldemul_list_emulations (stdout);
1209   printf ("\n");
1210
1211   /* xgettext:c-format */
1212   printf (_("%s: emulation specific options:\n"), program_name);
1213   ldemul_list_emulation_options (stdout);
1214   printf ("\n");
1215
1216   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1217 }