ld/lexsup.c

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