ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   4    Free Software Foundation, Inc.
   5
   6    This file is part of the GNU Binutils.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23 #include "sysdep.h"
  24 #include "bfd.h"
  25 #include "bfdver.h"
  26 #include "libiberty.h"
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include "safe-ctype.h"
  30 #include "getopt.h"
  31 #include "bfdlink.h"
  32 #include "ld.h"
  33 #include "ldmain.h"
  34 #include "ldmisc.h"
  35 #include "ldexp.h"
  36 #include "ldlang.h"
  37 #include <ldgram.h>
  38 #include "ldlex.h"
  39 #include "ldfile.h"
  40 #include "ldver.h"
  41 #include "ldemul.h"
  42 #include "demangle.h"
  43
  44 #ifndef PATH_SEPARATOR
  45 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  46 #define PATH_SEPARATOR ';'
  47 #else
  48 #define PATH_SEPARATOR ':'
  49 #endif
  50 #endif
  51
  52 /* Somewhere above, sys/stat.h got included . . . .  */
  53 #if !defined(S_ISDIR) && defined(S_IFDIR)
  54 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  55 #endif
  56
  57 static void set_default_dirlist (char *);
  58 static void set_section_start (char *, char *);
  59 static void set_segment_start (const char *, char *);
  60 static void help (void);
  61
  62 /* Non-zero if we are processing a --defsym from the command line.  */
  63 int parsing_defsym = 0;
  64
  65 /* Codes used for the long options with no short synonyms.  150 isn't
  66    special; it's just an arbitrary non-ASCII char value.  */
  67 enum option_values
  68 {
  69   OPTION_ASSERT = 150,
  70   OPTION_CALL_SHARED,
  71   OPTION_CREF,
  72   OPTION_DEFSYM,
  73   OPTION_DEMANGLE,
  74   OPTION_DYNAMIC_LINKER,
  75   OPTION_SYSROOT,
  76   OPTION_EB,
  77   OPTION_EL,
  78   OPTION_EMBEDDED_RELOCS,
  79   OPTION_EXPORT_DYNAMIC,
  80   OPTION_NO_EXPORT_DYNAMIC,
  81   OPTION_HELP,
  82   OPTION_IGNORE,
  83   OPTION_MAP,
  84   OPTION_NO_DEMANGLE,
  85   OPTION_NO_KEEP_MEMORY,
  86   OPTION_NO_WARN_MISMATCH,
  87   OPTION_NO_WARN_SEARCH_MISMATCH,
  88   OPTION_NOINHIBIT_EXEC,
  89   OPTION_NON_SHARED,
  90   OPTION_NO_WHOLE_ARCHIVE,
  91   OPTION_OFORMAT,
  92   OPTION_RELAX,
  93   OPTION_NO_RELAX,
  94   OPTION_RETAIN_SYMBOLS_FILE,
  95   OPTION_RPATH,
  96   OPTION_RPATH_LINK,
  97   OPTION_SHARED,
  98   OPTION_SONAME,
  99   OPTION_SORT_COMMON,
 100   OPTION_SORT_SECTION,
 101   OPTION_STATS,
 102   OPTION_SYMBOLIC,
 103   OPTION_SYMBOLIC_FUNCTIONS,
 104   OPTION_TASK_LINK,
 105   OPTION_TBSS,
 106   OPTION_TDATA,
 107   OPTION_TTEXT,
 108   OPTION_TTEXT_SEGMENT,
 109   OPTION_TRADITIONAL_FORMAT,
 110   OPTION_UR,
 111   OPTION_VERBOSE,
 112   OPTION_VERSION,
 113   OPTION_VERSION_SCRIPT,
 114   OPTION_VERSION_EXPORTS_SECTION,
 115   OPTION_DYNAMIC_LIST,
 116   OPTION_DYNAMIC_LIST_CPP_NEW,
 117   OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
 118   OPTION_DYNAMIC_LIST_DATA,
 119   OPTION_WARN_COMMON,
 120   OPTION_WARN_CONSTRUCTORS,
 121   OPTION_WARN_FATAL,
 122   OPTION_NO_WARN_FATAL,
 123   OPTION_WARN_MULTIPLE_GP,
 124   OPTION_WARN_ONCE,
 125   OPTION_WARN_SECTION_ALIGN,
 126   OPTION_SPLIT_BY_RELOC,
 127   OPTION_SPLIT_BY_FILE ,
 128   OPTION_WHOLE_ARCHIVE,
 129   OPTION_ADD_DT_NEEDED_FOR_DYNAMIC,
 130   OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC,
 131   OPTION_ADD_DT_NEEDED_FOR_REGULAR,
 132   OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR,
 133   OPTION_WRAP,
 134   OPTION_FORCE_EXE_SUFFIX,
 135   OPTION_GC_SECTIONS,
 136   OPTION_NO_GC_SECTIONS,
 137   OPTION_PRINT_GC_SECTIONS,
 138   OPTION_NO_PRINT_GC_SECTIONS,
 139   OPTION_HASH_SIZE,
 140   OPTION_CHECK_SECTIONS,
 141   OPTION_NO_CHECK_SECTIONS,
 142   OPTION_NO_UNDEFINED,
 143   OPTION_INIT,
 144   OPTION_FINI,
 145   OPTION_SECTION_START,
 146   OPTION_UNIQUE,
 147   OPTION_TARGET_HELP,
 148   OPTION_ALLOW_SHLIB_UNDEFINED,
 149   OPTION_NO_ALLOW_SHLIB_UNDEFINED,
 150   OPTION_ALLOW_MULTIPLE_DEFINITION,
 151   OPTION_NO_UNDEFINED_VERSION,
 152   OPTION_DEFAULT_SYMVER,
 153   OPTION_DEFAULT_IMPORTED_SYMVER,
 154   OPTION_DISCARD_NONE,
 155   OPTION_SPARE_DYNAMIC_TAGS,
 156   OPTION_NO_DEFINE_COMMON,
 157   OPTION_NOSTDLIB,
 158   OPTION_NO_OMAGIC,
 159   OPTION_STRIP_DISCARDED,
 160   OPTION_NO_STRIP_DISCARDED,
 161   OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
 162   OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
 163   OPTION_PIE,
 164   OPTION_UNRESOLVED_SYMBOLS,
 165   OPTION_WARN_UNRESOLVED_SYMBOLS,
 166   OPTION_ERROR_UNRESOLVED_SYMBOLS,
 167   OPTION_WARN_SHARED_TEXTREL,
 168   OPTION_WARN_ALTERNATE_EM,
 169   OPTION_REDUCE_MEMORY_OVERHEADS,
 170   OPTION_DEFAULT_SCRIPT
 171 };
 172
 173 /* The long options.  This structure is used for both the option
 174    parsing and the help text.  */
 175
 176 enum control_enum {
 177   /* Use one dash before long option name.  */
 178   ONE_DASH,
 179   /* Use two dashes before long option name.  */
 180   TWO_DASHES,
 181   /* Only accept two dashes before the long option name.
 182      This is an overloading of the use of this enum, since originally it
 183      was only intended to tell the --help display function how to display
 184      the long option name.  This feature was added in order to resolve
 185      the confusion about the -omagic command line switch.  Is it setting
 186      the output file name to "magic" or is it setting the NMAGIC flag on
 187      the output ?  It has been decided that it is setting the output file
 188      name, and that if you want to set the NMAGIC flag you should use -N
 189      or --omagic.  */
 190   EXACTLY_TWO_DASHES,
 191   /* Don't mention this option in --help output.  */
 192   NO_HELP
 193 };
 194
 195 struct ld_option
 196 {
 197   /* The long option information.  */
 198   struct option opt;
 199   /* The short option with the same meaning ('\0' if none).  */
 200   char shortopt;
 201   /* The name of the argument (NULL if none).  */
 202   const char *arg;
 203   /* The documentation string.  If this is NULL, this is a synonym for
 204      the previous option.  */
 205   const char *doc;
 206   enum control_enum control;
 207 };
 208
 209 static const struct ld_option ld_options[] =
 210 {
 211   { {NULL, required_argument, NULL, '\0'},
 212     'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 213     ONE_DASH },
 214   { {"architecture", required_argument, NULL, 'A'},
 215     'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 216   { {"format", required_argument, NULL, 'b'},
 217     'b', N_("TARGET"), N_("Specify target for following input files"),
 218     TWO_DASHES },
 219   { {"mri-script", required_argument, NULL, 'c'},
 220     'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 221   { {"dc", no_argument, NULL, 'd'},
 222     'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 223   { {"dp", no_argument, NULL, 'd'},
 224     '\0', NULL, NULL, ONE_DASH },
 225   { {"entry", required_argument, NULL, 'e'},
 226     'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 227   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 228     'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 229   { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
 230     '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
 231   { {"EB", no_argument, NULL, OPTION_EB},
 232     '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 233   { {"EL", no_argument, NULL, OPTION_EL},
 234     '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 235   { {"auxiliary", required_argument, NULL, 'f'},
 236     'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 237     TWO_DASHES },
 238   { {"filter", required_argument, NULL, 'F'},
 239     'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
 240     TWO_DASHES },
 241   { {NULL, no_argument, NULL, '\0'},
 242     'g', NULL, N_("Ignored"), ONE_DASH },
 243   { {"gpsize", required_argument, NULL, 'G'},
 244     'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 245     TWO_DASHES },
 246   { {"soname", required_argument, NULL, OPTION_SONAME},
 247     'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 248   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 249     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
 250     TWO_DASHES },
 251   { {"library", required_argument, NULL, 'l'},
 252     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 253   { {"library-path", required_argument, NULL, 'L'},
 254     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 255     TWO_DASHES },
 256   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 257     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 258   { {NULL, required_argument, NULL, '\0'},
 259     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 260   { {"print-map", no_argument, NULL, 'M'},
 261     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 262   { {"nmagic", no_argument, NULL, 'n'},
 263     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 264   { {"omagic", no_argument, NULL, 'N'},
 265     'N', NULL, N_("Do not page align data, do not make text readonly"),
 266     EXACTLY_TWO_DASHES },
 267   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 268     '\0', NULL, N_("Page align data, make text readonly"),
 269     EXACTLY_TWO_DASHES },
 270   { {"output", required_argument, NULL, 'o'},
 271     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 272   { {NULL, required_argument, NULL, '\0'},
 273     'O', NULL, N_("Optimize output file"), ONE_DASH },
 274   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 275     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 276   { {"emit-relocs", no_argument, NULL, 'q'},
 277     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 278   { {"relocatable", no_argument, NULL, 'r'},
 279     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 280   { {NULL, no_argument, NULL, '\0'},
 281     'i', NULL, NULL, ONE_DASH },
 282   { {"just-symbols", required_argument, NULL, 'R'},
 283     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 284     TWO_DASHES },
 285   { {"strip-all", no_argument, NULL, 's'},
 286     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 287   { {"strip-debug", no_argument, NULL, 'S'},
 288     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 289   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 290     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 291   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 292     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 293   { {"trace", no_argument, NULL, 't'},
 294     't', NULL, N_("Trace file opens"), TWO_DASHES },
 295   { {"script", required_argument, NULL, 'T'},
 296     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 297   { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 298     '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
 299   { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 300     '\0', NULL, NULL, ONE_DASH },
 301   { {"undefined", required_argument, NULL, 'u'},
 302     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 303     TWO_DASHES },
 304   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 305     '\0', N_("[=SECTION]"),
 306     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 307   { {"Ur", no_argument, NULL, OPTION_UR},
 308     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 309   { {"version", no_argument, NULL, OPTION_VERSION},
 310     'v', NULL, N_("Print version information"), TWO_DASHES },
 311   { {NULL, no_argument, NULL, '\0'},
 312     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 313   { {"discard-all", no_argument, NULL, 'x'},
 314     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 315   { {"discard-locals", no_argument, NULL, 'X'},
 316     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 317   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 318     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 319   { {"trace-symbol", required_argument, NULL, 'y'},
 320     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 321   { {NULL, required_argument, NULL, '\0'},
 322     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 323     ONE_DASH },
 324   { {"start-group", no_argument, NULL, '('},
 325     '(', NULL, N_("Start a group"), TWO_DASHES },
 326   { {"end-group", no_argument, NULL, ')'},
 327     ')', NULL, N_("End a group"), TWO_DASHES },
 328   { {"accept-unknown-input-arch", no_argument, NULL,
 329      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 330     '\0', NULL,
 331     N_("Accept input files whose architecture cannot be determined"),
 332     TWO_DASHES },
 333   { {"no-accept-unknown-input-arch", no_argument, NULL,
 334      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 335     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 336     TWO_DASHES },
 337
 338   /* The next two options are deprecated because of their similarity to
 339      --as-needed and --no-as-needed.  They have been replaced by
 340      --resolve-implicit-dynamic-symbols and
 341      --no-resolve-implicit-dynamic-symbols.  */
 342   { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 343     '\0', NULL, NULL, NO_HELP },
 344   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 345     '\0', NULL, NULL, NO_HELP },
 346
 347   { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
 348     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 349     TWO_DASHES },
 350   { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
 351     '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
 352                    "                                the command line"),
 353     TWO_DASHES },
 354   { {"assert", required_argument, NULL, OPTION_ASSERT},
 355     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 356   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 357     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 358   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 359     '\0', NULL, NULL, ONE_DASH },
 360   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 361     '\0', NULL, NULL, ONE_DASH },
 362   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 363     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 364   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 365     '\0', NULL, NULL, ONE_DASH },
 366   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 367     '\0', NULL, NULL, ONE_DASH },
 368   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 369     '\0', NULL, NULL, ONE_DASH },
 370   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 371     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 372   { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
 373     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 374   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 375     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 376     TWO_DASHES },
 377   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 378     '\0', NULL, N_("Do not check section addresses for overlaps"),
 379     TWO_DASHES },
 380   { {"copy-dt-needed-entries", no_argument, NULL,
 381      OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 382     '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
 383     TWO_DASHES },
 384   { {"no-copy-dt-needed-entries", no_argument, NULL,
 385      OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 386     '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
 387     TWO_DASHES },
 388
 389   { {"cref", no_argument, NULL, OPTION_CREF},
 390     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 391   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 392     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 393   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 394     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 395     TWO_DASHES },
 396   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 397     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 398   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 399     '\0', NULL, N_("Treat warnings as errors"),
 400     TWO_DASHES },
 401   { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
 402     '\0', NULL, N_("Do not treat warnings as errors (default)"),
 403     TWO_DASHES },
 404   { {"fini", required_argument, NULL, OPTION_FINI},
 405     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 406   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 407     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 408   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 409     '\0', NULL, N_("Remove unused sections (on some targets)"),
 410     TWO_DASHES },
 411   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 412     '\0', NULL, N_("Don't remove unused sections (default)"),
 413     TWO_DASHES },
 414   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 415     '\0', NULL, N_("List removed unused sections on stderr"),
 416     TWO_DASHES },
 417   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 418     '\0', NULL, N_("Do not list removed unused sections"),
 419     TWO_DASHES },
 420   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 421     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 422     TWO_DASHES },
 423   { {"help", no_argument, NULL, OPTION_HELP},
 424     '\0', NULL, N_("Print option help"), TWO_DASHES },
 425   { {"init", required_argument, NULL, OPTION_INIT},
 426     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 427   { {"Map", required_argument, NULL, OPTION_MAP},
 428     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 429   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 430     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 431   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 432     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 433   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 434     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 435   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 436     '\0', NULL, N_("Do not allow unresolved references in object files"),
 437     TWO_DASHES },
 438   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 439     '\0', NULL, N_("Allow unresolved references in shared libaries"),
 440     TWO_DASHES },
 441   { {"no-allow-shlib-undefined", no_argument, NULL,
 442      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 443     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 444     TWO_DASHES },
 445   { {"allow-multiple-definition", no_argument, NULL,
 446      OPTION_ALLOW_MULTIPLE_DEFINITION},
 447     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 448   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 449     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 450   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 451     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 452   { {"default-imported-symver", no_argument, NULL,
 453       OPTION_DEFAULT_IMPORTED_SYMVER},
 454     '\0', NULL, N_("Create default symbol version for imported symbols"),
 455     TWO_DASHES },
 456   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 457     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 458   { {"no-warn-search-mismatch", no_argument, NULL,
 459      OPTION_NO_WARN_SEARCH_MISMATCH},
 460     '\0', NULL, N_("Don't warn on finding an incompatible library"),
 461     TWO_DASHES},
 462   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 463     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 464   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 465     '\0', NULL, N_("Create an output file even if errors occur"),
 466     TWO_DASHES },
 467   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 468     '\0', NULL, NULL, NO_HELP },
 469   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 470     '\0', NULL, N_("Only use library directories specified on\n"
 471                    "                                the command line"),
 472     ONE_DASH },
 473   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 474     '\0', N_("TARGET"), N_("Specify target of output file"),
 475     EXACTLY_TWO_DASHES },
 476   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 477     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 478   { {"reduce-memory-overheads", no_argument, NULL,
 479      OPTION_REDUCE_MEMORY_OVERHEADS},
 480     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 481     TWO_DASHES },
 482   { {"relax", no_argument, NULL, OPTION_RELAX},
 483     '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
 484   { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
 485     '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
 486   { {"retain-symbols-file", required_argument, NULL,
 487      OPTION_RETAIN_SYMBOLS_FILE},
 488     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 489   { {"rpath", required_argument, NULL, OPTION_RPATH},
 490     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 491   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 492     '\0', N_("PATH"), N_("Set link time shared library search path"),
 493     ONE_DASH },
 494   { {"shared", no_argument, NULL, OPTION_SHARED},
 495     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 496   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 497     '\0', NULL, NULL, ONE_DASH },
 498   { {"pie", no_argument, NULL, OPTION_PIE},
 499     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 500   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 501     '\0', NULL, NULL, TWO_DASHES },
 502   { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
 503     '\0', N_("[=ascending|descending]"),
 504     N_("Sort common symbols by alignment [in specified order]"),
 505     TWO_DASHES },
 506   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 507     '\0', NULL, NULL, NO_HELP },
 508   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 509     '\0', N_("name|alignment"),
 510     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 511   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 512     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 513     TWO_DASHES },
 514   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 515     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 516     TWO_DASHES },
 517   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 518     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 519     TWO_DASHES },
 520   { {"stats", no_argument, NULL, OPTION_STATS},
 521     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 522   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 523     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 524   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 525     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 526   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 527     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 528   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 529     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 530     TWO_DASHES },
 531   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 532     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 533   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 534     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 535   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 536     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 537   { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
 538     '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
 539   { {"unresolved-symbols=<method>", required_argument, NULL,
 540      OPTION_UNRESOLVED_SYMBOLS},
 541     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 542                    "                                ignore-all, report-all, ignore-in-object-files,\n"
 543                    "                                ignore-in-shared-libs"),
 544     TWO_DASHES },
 545   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 546     '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 547   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 548     '\0', NULL, NULL, NO_HELP },
 549   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 550     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 551   { {"version-exports-section", required_argument, NULL,
 552      OPTION_VERSION_EXPORTS_SECTION },
 553     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 554                            "                                SYMBOL as the version."),
 555     TWO_DASHES },
 556   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 557     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 558   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 559     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 560   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 561     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 562   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 563     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 564   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 565     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 566   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 567     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 568     TWO_DASHES },
 569   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 570     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 571   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 572     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 573   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 574     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 575     TWO_DASHES },
 576   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 577     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 578     TWO_DASHES },
 579   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 580     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 581     TWO_DASHES },
 582   { {"warn-unresolved-symbols", no_argument, NULL,
 583      OPTION_WARN_UNRESOLVED_SYMBOLS},
 584     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 585   { {"error-unresolved-symbols", no_argument, NULL,
 586      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 587     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 588   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 589     '\0', NULL, N_("Include all objects from following archives"),
 590     TWO_DASHES },
 591   { {"wrap", required_argument, NULL, OPTION_WRAP},
 592     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 593 };
 594
 595 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 596
 597 void
 598 parse_args (unsigned argc, char **argv)
 599 {
 600   unsigned i;
 601   int is, il, irl;
 602   int ingroup = 0;
 603   char *default_dirlist = NULL;
 604   char *shortopts;
 605   struct option *longopts;
 606   struct option *really_longopts;
 607   int last_optind;
 608   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 609
 610   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 611   longopts = (struct option *)
 612       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 613   really_longopts = (struct option *)
 614       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 615
 616   /* Starting the short option string with '-' is for programs that
 617      expect options and other ARGV-elements in any order and that care about
 618      the ordering of the two.  We describe each non-option ARGV-element
 619      as if it were the argument of an option with character code 1.  */
 620   shortopts[0] = '-';
 621   is = 1;
 622   il = 0;
 623   irl = 0;
 624   for (i = 0; i < OPTION_COUNT; i++)
 625     {
 626       if (ld_options[i].shortopt != '\0')
 627         {
 628           shortopts[is] = ld_options[i].shortopt;
 629           ++is;
 630           if (ld_options[i].opt.has_arg == required_argument
 631               || ld_options[i].opt.has_arg == optional_argument)
 632             {
 633               shortopts[is] = ':';
 634               ++is;
 635               if (ld_options[i].opt.has_arg == optional_argument)
 636                 {
 637                   shortopts[is] = ':';
 638                   ++is;
 639                 }
 640             }
 641         }
 642       if (ld_options[i].opt.name != NULL)
 643         {
 644           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 645             {
 646               really_longopts[irl] = ld_options[i].opt;
 647               ++irl;
 648             }
 649           else
 650             {
 651               longopts[il] = ld_options[i].opt;
 652               ++il;
 653             }
 654         }
 655     }
 656   shortopts[is] = '\0';
 657   longopts[il].name = NULL;
 658   really_longopts[irl].name = NULL;
 659
 660   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 661
 662   /* The -G option is ambiguous on different platforms.  Sometimes it
 663      specifies the largest data size to put into the small data
 664      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 665      the first form takes an argument, while the second does not.
 666
 667      We need to permit the --shared form because on some platforms,
 668      such as Solaris, gcc -shared will pass -G to the linker.
 669
 670      To permit either usage, we look through the argument list.  If we
 671      find -G not followed by a number, we change it into --shared.
 672      This will work for most normal cases.  */
 673   for (i = 1; i < argc; i++)
 674     if (strcmp (argv[i], "-G") == 0
 675         && (i + 1 >= argc
 676             || ! ISDIGIT (argv[i + 1][0])))
 677       argv[i] = (char *) "--shared";
 678
 679   /* Because we permit long options to start with a single dash, and
 680      we have a --library option, and the -l option is conventionally
 681      used with an immediately following argument, we can have bad
 682      results if somebody tries to use -l with a library whose name
 683      happens to start with "ibrary", as in -li.  We avoid problems by
 684      simply turning -l into --library.  This means that users will
 685      have to use two dashes in order to use --library, which is OK
 686      since that's how it is documented.
 687
 688      FIXME: It's possible that this problem can arise for other short
 689      options as well, although the user does always have the recourse
 690      of adding a space between the option and the argument.  */
 691   for (i = 1; i < argc; i++)
 692     {
 693       if (argv[i][0] == '-'
 694           && argv[i][1] == 'l'
 695           && argv[i][2] != '\0')
 696         {
 697           char *n;
 698
 699           n = (char *) xmalloc (strlen (argv[i]) + 20);
 700           sprintf (n, "--library=%s", argv[i] + 2);
 701           argv[i] = n;
 702         }
 703     }
 704
 705   last_optind = -1;
 706   while (1)
 707     {
 708       int longind;
 709       int optc;
 710
 711       /* Using last_optind lets us avoid calling ldemul_parse_args
 712          multiple times on a single option, which would lead to
 713          confusion in the internal static variables maintained by
 714          getopt.  This could otherwise happen for an argument like
 715          -nx, in which the -n is parsed as a single option, and we
 716          loop around to pick up the -x.  */
 717       if (optind != last_optind)
 718         if (ldemul_parse_args (argc, argv))
 719           continue;
 720
 721       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 722          can indicate a long option.  */
 723       opterr = 0;
 724       last_optind = optind;
 725       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 726       if (optc == '?')
 727         {
 728           optind = last_optind;
 729           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 730         }
 731
 732       if (ldemul_handle_option (optc))
 733         continue;
 734
 735       if (optc == -1)
 736         break;
 737
 738       switch (optc)
 739         {
 740         case '?':
 741           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 742           /* Fall through.  */
 743
 744         default:
 745           einfo (_("%P%F: use the --help option for usage information\n"));
 746
 747         case 1:                 /* File name.  */
 748           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 749           break;
 750
 751         case OPTION_IGNORE:
 752           break;
 753         case 'a':
 754           /* For HP/UX compatibility.  Actually -a shared should mean
 755              ``use only shared libraries'' but, then, we don't
 756              currently support shared libraries on HP/UX anyhow.  */
 757           if (strcmp (optarg, "archive") == 0)
 758             config.dynamic_link = FALSE;
 759           else if (strcmp (optarg, "shared") == 0
 760                    || strcmp (optarg, "default") == 0)
 761             config.dynamic_link = TRUE;
 762           else
 763             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 764           break;
 765         case OPTION_ASSERT:
 766           /* FIXME: We just ignore these, but we should handle them.  */
 767           if (strcmp (optarg, "definitions") == 0)
 768             ;
 769           else if (strcmp (optarg, "nodefinitions") == 0)
 770             ;
 771           else if (strcmp (optarg, "nosymbolic") == 0)
 772             ;
 773           else if (strcmp (optarg, "pure-text") == 0)
 774             ;
 775           else
 776             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 777           break;
 778         case 'A':
 779           ldfile_add_arch (optarg);
 780           break;
 781         case 'b':
 782           lang_add_target (optarg);
 783           break;
 784         case 'c':
 785           ldfile_open_command_file (optarg);
 786           parser_input = input_mri_script;
 787           yyparse ();
 788           break;
 789         case OPTION_CALL_SHARED:
 790           config.dynamic_link = TRUE;
 791           break;
 792         case OPTION_NON_SHARED:
 793           config.dynamic_link = FALSE;
 794           break;
 795         case OPTION_CREF:
 796           command_line.cref = TRUE;
 797           link_info.notice_all = TRUE;
 798           break;
 799         case 'd':
 800           command_line.force_common_definition = TRUE;
 801           break;
 802         case OPTION_DEFSYM:
 803           lex_string = optarg;
 804           lex_redirect (optarg);
 805           parser_input = input_defsym;
 806           parsing_defsym = 1;
 807           yyparse ();
 808           parsing_defsym = 0;
 809           lex_string = NULL;
 810           break;
 811         case OPTION_DEMANGLE:
 812           demangling = TRUE;
 813           if (optarg != NULL)
 814             {
 815               enum demangling_styles style;
 816
 817               style = cplus_demangle_name_to_style (optarg);
 818               if (style == unknown_demangling)
 819                 einfo (_("%F%P: unknown demangling style `%s'"),
 820                        optarg);
 821
 822               cplus_demangle_set_style (style);
 823             }
 824           break;
 825         case 'I':               /* Used on Solaris.  */
 826         case OPTION_DYNAMIC_LINKER:
 827           command_line.interpreter = optarg;
 828           break;
 829         case OPTION_SYSROOT:
 830           /* Already handled in ldmain.c.  */
 831           break;
 832         case OPTION_EB:
 833           command_line.endian = ENDIAN_BIG;
 834           break;
 835         case OPTION_EL:
 836           command_line.endian = ENDIAN_LITTLE;
 837           break;
 838         case OPTION_EMBEDDED_RELOCS:
 839           command_line.embedded_relocs = TRUE;
 840           break;
 841         case OPTION_EXPORT_DYNAMIC:
 842         case 'E': /* HP/UX compatibility.  */
 843           link_info.export_dynamic = TRUE;
 844           break;
 845         case OPTION_NO_EXPORT_DYNAMIC:
 846           link_info.export_dynamic = FALSE;
 847           break;
 848         case 'e':
 849           lang_add_entry (optarg, TRUE);
 850           break;
 851         case 'f':
 852           if (command_line.auxiliary_filters == NULL)
 853             {
 854               command_line.auxiliary_filters = (char **)
 855                   xmalloc (2 * sizeof (char *));
 856               command_line.auxiliary_filters[0] = optarg;
 857               command_line.auxiliary_filters[1] = NULL;
 858             }
 859           else
 860             {
 861               int c;
 862               char **p;
 863
 864               c = 0;
 865               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 866                 ++c;
 867               command_line.auxiliary_filters = (char **)
 868                   xrealloc (command_line.auxiliary_filters,
 869                             (c + 2) * sizeof (char *));
 870               command_line.auxiliary_filters[c] = optarg;
 871               command_line.auxiliary_filters[c + 1] = NULL;
 872             }
 873           break;
 874         case 'F':
 875           command_line.filter_shlib = optarg;
 876           break;
 877         case OPTION_FORCE_EXE_SUFFIX:
 878           command_line.force_exe_suffix = TRUE;
 879           break;
 880         case 'G':
 881           {
 882             char *end;
 883             g_switch_value = strtoul (optarg, &end, 0);
 884             if (*end)
 885               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 886           }
 887           break;
 888         case 'g':
 889           /* Ignore.  */
 890           break;
 891         case OPTION_GC_SECTIONS:
 892           link_info.gc_sections = TRUE;
 893           break;
 894         case OPTION_PRINT_GC_SECTIONS:
 895           link_info.print_gc_sections = TRUE;
 896           break;
 897         case OPTION_HELP:
 898           help ();
 899           xexit (0);
 900           break;
 901         case 'L':
 902           ldfile_add_library_path (optarg, TRUE);
 903           break;
 904         case 'l':
 905           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 906           break;
 907         case 'M':
 908           config.map_filename = "-";
 909           break;
 910         case 'm':
 911           /* Ignore.  Was handled in a pre-parse.   */
 912           break;
 913         case OPTION_MAP:
 914           config.map_filename = optarg;
 915           break;
 916         case 'N':
 917           config.text_read_only = FALSE;
 918           config.magic_demand_paged = FALSE;
 919           config.dynamic_link = FALSE;
 920           break;
 921         case OPTION_NO_OMAGIC:
 922           config.text_read_only = TRUE;
 923           config.magic_demand_paged = TRUE;
 924           /* NB/ Does not set dynamic_link to TRUE.
 925              Use --call-shared or -Bdynamic for this.  */
 926           break;
 927         case 'n':
 928           config.magic_demand_paged = FALSE;
 929           config.dynamic_link = FALSE;
 930           break;
 931         case OPTION_NO_DEFINE_COMMON:
 932           command_line.inhibit_common_definition = TRUE;
 933           break;
 934         case OPTION_NO_DEMANGLE:
 935           demangling = FALSE;
 936           break;
 937         case OPTION_NO_GC_SECTIONS:
 938           link_info.gc_sections = FALSE;
 939           break;
 940         case OPTION_NO_PRINT_GC_SECTIONS:
 941           link_info.print_gc_sections = FALSE;
 942           break;
 943         case OPTION_NO_KEEP_MEMORY:
 944           link_info.keep_memory = FALSE;
 945           break;
 946         case OPTION_NO_UNDEFINED:
 947           link_info.unresolved_syms_in_objects
 948             = how_to_report_unresolved_symbols;
 949           break;
 950         case OPTION_ALLOW_SHLIB_UNDEFINED:
 951           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 952           break;
 953         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 954           link_info.unresolved_syms_in_shared_libs
 955             = how_to_report_unresolved_symbols;
 956           break;
 957         case OPTION_UNRESOLVED_SYMBOLS:
 958           if (strcmp (optarg, "ignore-all") == 0)
 959             {
 960               link_info.unresolved_syms_in_objects = RM_IGNORE;
 961               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 962             }
 963           else if (strcmp (optarg, "report-all") == 0)
 964             {
 965               link_info.unresolved_syms_in_objects
 966                 = how_to_report_unresolved_symbols;
 967               link_info.unresolved_syms_in_shared_libs
 968                 = how_to_report_unresolved_symbols;
 969             }
 970           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 971             {
 972               link_info.unresolved_syms_in_objects = RM_IGNORE;
 973               link_info.unresolved_syms_in_shared_libs
 974                 = how_to_report_unresolved_symbols;
 975             }
 976           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 977             {
 978               link_info.unresolved_syms_in_objects
 979                 = how_to_report_unresolved_symbols;
 980               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 981             }
 982           else
 983             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
 984           break;
 985         case OPTION_WARN_UNRESOLVED_SYMBOLS:
 986           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
 987           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
 988             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
 989           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
 990             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
 991           break;
 992
 993         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
 994           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 995           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
 996             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
 997           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
 998             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
 999           break;
1000         case OPTION_ALLOW_MULTIPLE_DEFINITION:
1001           link_info.allow_multiple_definition = TRUE;
1002           break;
1003         case OPTION_NO_UNDEFINED_VERSION:
1004           link_info.allow_undefined_version = FALSE;
1005           break;
1006         case OPTION_DEFAULT_SYMVER:
1007           link_info.create_default_symver = TRUE;
1008           break;
1009         case OPTION_DEFAULT_IMPORTED_SYMVER:
1010           link_info.default_imported_symver = TRUE;
1011           break;
1012         case OPTION_NO_WARN_MISMATCH:
1013           command_line.warn_mismatch = FALSE;
1014           break;
1015         case OPTION_NO_WARN_SEARCH_MISMATCH:
1016           command_line.warn_search_mismatch = FALSE;
1017           break;
1018         case OPTION_NOINHIBIT_EXEC:
1019           force_make_executable = TRUE;
1020           break;
1021         case OPTION_NOSTDLIB:
1022           config.only_cmd_line_lib_dirs = TRUE;
1023           break;
1024         case OPTION_NO_WHOLE_ARCHIVE:
1025           whole_archive = FALSE;
1026           break;
1027         case 'O':
1028           /* FIXME "-O<non-digits> <value>" used to set the address of
1029              section <non-digits>.  Was this for compatibility with
1030              something, or can we create a new option to do that
1031              (with a syntax similar to -defsym)?
1032              getopt can't handle two args to an option without kludges.  */
1033
1034           /* Enable optimizations of output files.  */
1035           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1036           break;
1037         case 'o':
1038           lang_add_output (optarg, 0);
1039           break;
1040         case OPTION_OFORMAT:
1041           lang_add_output_format (optarg, NULL, NULL, 0);
1042           break;
1043         case 'q':
1044           link_info.emitrelocations = TRUE;
1045           break;
1046         case 'i':
1047         case 'r':
1048           if (optind == last_optind)
1049             /* This can happen if the user put "-rpath,a" on the command
1050                line.  (Or something similar.  The comma is important).
1051                Getopt becomes confused and thinks that this is a -r option
1052                but it cannot parse the text after the -r so it refuses to
1053                increment the optind counter.  Detect this case and issue
1054                an error message here.  We cannot just make this a warning,
1055                increment optind, and continue because getopt is too confused
1056                and will seg-fault the next time around.  */
1057             einfo(_("%P%F: bad -rpath option\n"));
1058
1059           link_info.relocatable = TRUE;
1060           config.build_constructors = FALSE;
1061           config.magic_demand_paged = FALSE;
1062           config.text_read_only = FALSE;
1063           config.dynamic_link = FALSE;
1064           break;
1065         case 'R':
1066           /* The GNU linker traditionally uses -R to mean to include
1067              only the symbols from a file.  The Solaris linker uses -R
1068              to set the path used by the runtime linker to find
1069              libraries.  This is the GNU linker -rpath argument.  We
1070              try to support both simultaneously by checking the file
1071              named.  If it is a directory, rather than a regular file,
1072              we assume -rpath was meant.  */
1073           {
1074             struct stat s;
1075
1076             if (stat (optarg, &s) >= 0
1077                 && ! S_ISDIR (s.st_mode))
1078               {
1079                 lang_add_input_file (optarg,
1080                                      lang_input_file_is_symbols_only_enum,
1081                                      NULL);
1082                 break;
1083               }
1084           }
1085           /* Fall through.  */
1086         case OPTION_RPATH:
1087           if (command_line.rpath == NULL)
1088             command_line.rpath = xstrdup (optarg);
1089           else
1090             {
1091               size_t rpath_len = strlen (command_line.rpath);
1092               size_t optarg_len = strlen (optarg);
1093               char *buf;
1094               char *cp = command_line.rpath;
1095
1096               /* First see whether OPTARG is already in the path.  */
1097               do
1098                 {
1099                   if (strncmp (optarg, cp, optarg_len) == 0
1100                       && (cp[optarg_len] == 0
1101                           || cp[optarg_len] == config.rpath_separator))
1102                     /* We found it.  */
1103                     break;
1104
1105                   /* Not yet found.  */
1106                   cp = strchr (cp, config.rpath_separator);
1107                   if (cp != NULL)
1108                     ++cp;
1109                 }
1110               while (cp != NULL);
1111
1112               if (cp == NULL)
1113                 {
1114                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1115                   sprintf (buf, "%s%c%s", command_line.rpath,
1116                            config.rpath_separator, optarg);
1117                   free (command_line.rpath);
1118                   command_line.rpath = buf;
1119                 }
1120             }
1121           break;
1122         case OPTION_RPATH_LINK:
1123           if (command_line.rpath_link == NULL)
1124             command_line.rpath_link = xstrdup (optarg);
1125           else
1126             {
1127               char *buf;
1128
1129               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1130                                       + strlen (optarg)
1131                                       + 2);
1132               sprintf (buf, "%s%c%s", command_line.rpath_link,
1133                        config.rpath_separator, optarg);
1134               free (command_line.rpath_link);
1135               command_line.rpath_link = buf;
1136             }
1137           break;
1138         case OPTION_NO_RELAX:
1139           DISABLE_RELAXATION;
1140           break;
1141         case OPTION_RELAX:
1142           ENABLE_RELAXATION;
1143           break;
1144         case OPTION_RETAIN_SYMBOLS_FILE:
1145           add_keepsyms_file (optarg);
1146           break;
1147         case 'S':
1148           link_info.strip = strip_debugger;
1149           break;
1150         case 's':
1151           link_info.strip = strip_all;
1152           break;
1153         case OPTION_STRIP_DISCARDED:
1154           link_info.strip_discarded = TRUE;
1155           break;
1156         case OPTION_NO_STRIP_DISCARDED:
1157           link_info.strip_discarded = FALSE;
1158           break;
1159         case OPTION_SHARED:
1160           if (config.has_shared)
1161             {
1162               link_info.shared = TRUE;
1163               /* When creating a shared library, the default
1164                  behaviour is to ignore any unresolved references.  */
1165               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1166                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1167               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1168                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1169             }
1170           else
1171             einfo (_("%P%F: -shared not supported\n"));
1172           break;
1173         case OPTION_PIE:
1174           if (config.has_shared)
1175             {
1176               link_info.shared = TRUE;
1177               link_info.pie = TRUE;
1178             }
1179           else
1180             einfo (_("%P%F: -pie not supported\n"));
1181           break;
1182         case 'h':               /* Used on Solaris.  */
1183         case OPTION_SONAME:
1184           command_line.soname = optarg;
1185           break;
1186         case OPTION_SORT_COMMON:
1187           if (optarg == NULL
1188               || strcmp (optarg, N_("descending")) == 0)
1189             config.sort_common = sort_descending;
1190           else if (strcmp (optarg, N_("ascending")) == 0)
1191             config.sort_common = sort_ascending;
1192           else
1193             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1194                    optarg);
1195           break;
1196         case OPTION_SORT_SECTION:
1197           if (strcmp (optarg, N_("name")) == 0)
1198             sort_section = by_name;
1199           else if (strcmp (optarg, N_("alignment")) == 0)
1200             sort_section = by_alignment;
1201           else
1202             einfo (_("%P%F: invalid section sorting option: %s\n"),
1203                    optarg);
1204           break;
1205         case OPTION_STATS:
1206           config.stats = TRUE;
1207           break;
1208         case OPTION_SYMBOLIC:
1209           command_line.symbolic = symbolic;
1210           break;
1211         case OPTION_SYMBOLIC_FUNCTIONS:
1212           command_line.symbolic = symbolic_functions;
1213           break;
1214         case 't':
1215           trace_files = TRUE;
1216           break;
1217         case 'T':
1218           previous_script_handle = saved_script_handle;
1219           ldfile_open_command_file (optarg);
1220           parser_input = input_script;
1221           yyparse ();
1222           previous_script_handle = NULL;
1223           break;
1224         case OPTION_DEFAULT_SCRIPT:
1225           command_line.default_script = optarg;
1226           break;
1227         case OPTION_SECTION_START:
1228           {
1229             char *optarg2;
1230             char *sec_name;
1231             int len;
1232
1233             /* Check for <something>=<somthing>...  */
1234             optarg2 = strchr (optarg, '=');
1235             if (optarg2 == NULL)
1236               einfo (_("%P%F: invalid argument to option"
1237                        " \"--section-start\"\n"));
1238
1239             optarg2++;
1240
1241             /* So far so good.  Are all the args present?  */
1242             if ((*optarg == '\0') || (*optarg2 == '\0'))
1243               einfo (_("%P%F: missing argument(s) to option"
1244                        " \"--section-start\"\n"));
1245
1246             /* We must copy the section name as set_section_start
1247                doesn't do it for us.  */
1248             len = optarg2 - optarg;
1249             sec_name = (char *) xmalloc (len);
1250             memcpy (sec_name, optarg, len - 1);
1251             sec_name[len - 1] = 0;
1252
1253             /* Then set it...  */
1254             set_section_start (sec_name, optarg2);
1255           }
1256           break;
1257         case OPTION_TARGET_HELP:
1258           /* Mention any target specific options.  */
1259           ldemul_list_emulation_options (stdout);
1260           exit (0);
1261         case OPTION_TBSS:
1262           set_segment_start (".bss", optarg);
1263           break;
1264         case OPTION_TDATA:
1265           set_segment_start (".data", optarg);
1266           break;
1267         case OPTION_TTEXT:
1268           set_segment_start (".text", optarg);
1269           break;
1270         case OPTION_TTEXT_SEGMENT:
1271           set_segment_start (".text-segment", optarg);
1272           break;
1273         case OPTION_TRADITIONAL_FORMAT:
1274           link_info.traditional_format = TRUE;
1275           break;
1276         case OPTION_TASK_LINK:
1277           link_info.task_link = TRUE;
1278           /* Fall through - do an implied -r option.  */
1279         case OPTION_UR:
1280           link_info.relocatable = TRUE;
1281           config.build_constructors = TRUE;
1282           config.magic_demand_paged = FALSE;
1283           config.text_read_only = FALSE;
1284           config.dynamic_link = FALSE;
1285           break;
1286         case 'u':
1287           ldlang_add_undef (optarg);
1288           break;
1289         case OPTION_UNIQUE:
1290           if (optarg != NULL)
1291             lang_add_unique (optarg);
1292           else
1293             config.unique_orphan_sections = TRUE;
1294           break;
1295         case OPTION_VERBOSE:
1296           ldversion (1);
1297           version_printed = TRUE;
1298           trace_file_tries = TRUE;
1299           overflow_cutoff_limit = -2;
1300           break;
1301         case 'v':
1302           ldversion (0);
1303           version_printed = TRUE;
1304           break;
1305         case 'V':
1306           ldversion (1);
1307           version_printed = TRUE;
1308           break;
1309         case OPTION_VERSION:
1310           ldversion (2);
1311           xexit (0);
1312           break;
1313         case OPTION_VERSION_SCRIPT:
1314           /* This option indicates a small script that only specifies
1315              version information.  Read it, but don't assume that
1316              we've seen a linker script.  */
1317           {
1318             FILE *hold_script_handle;
1319
1320             hold_script_handle = saved_script_handle;
1321             ldfile_open_command_file (optarg);
1322             saved_script_handle = hold_script_handle;
1323             parser_input = input_version_script;
1324             yyparse ();
1325           }
1326           break;
1327         case OPTION_VERSION_EXPORTS_SECTION:
1328           /* This option records a version symbol to be applied to the
1329              symbols listed for export to be found in the object files
1330              .exports sections.  */
1331           command_line.version_exports_section = optarg;
1332           break;
1333         case OPTION_DYNAMIC_LIST_DATA:
1334           command_line.dynamic_list = dynamic_list_data;
1335           if (command_line.symbolic == symbolic)
1336             command_line.symbolic = symbolic_unset;
1337           break;
1338         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1339           lang_append_dynamic_list_cpp_typeinfo ();
1340           if (command_line.dynamic_list != dynamic_list_data)
1341             command_line.dynamic_list = dynamic_list;
1342           if (command_line.symbolic == symbolic)
1343             command_line.symbolic = symbolic_unset;
1344           break;
1345         case OPTION_DYNAMIC_LIST_CPP_NEW:
1346           lang_append_dynamic_list_cpp_new ();
1347           if (command_line.dynamic_list != dynamic_list_data)
1348             command_line.dynamic_list = dynamic_list;
1349           if (command_line.symbolic == symbolic)
1350             command_line.symbolic = symbolic_unset;
1351           break;
1352         case OPTION_DYNAMIC_LIST:
1353           /* This option indicates a small script that only specifies
1354              a dynamic list.  Read it, but don't assume that we've
1355              seen a linker script.  */
1356           {
1357             FILE *hold_script_handle;
1358
1359             hold_script_handle = saved_script_handle;
1360             ldfile_open_command_file (optarg);
1361             saved_script_handle = hold_script_handle;
1362             parser_input = input_dynamic_list;
1363             yyparse ();
1364           }
1365           if (command_line.dynamic_list != dynamic_list_data)
1366             command_line.dynamic_list = dynamic_list;
1367           if (command_line.symbolic == symbolic)
1368             command_line.symbolic = symbolic_unset;
1369           break;
1370         case OPTION_WARN_COMMON:
1371           config.warn_common = TRUE;
1372           break;
1373         case OPTION_WARN_CONSTRUCTORS:
1374           config.warn_constructors = TRUE;
1375           break;
1376         case OPTION_WARN_FATAL:
1377           config.fatal_warnings = TRUE;
1378           break;
1379         case OPTION_NO_WARN_FATAL:
1380           config.fatal_warnings = FALSE;
1381           break;
1382         case OPTION_WARN_MULTIPLE_GP:
1383           config.warn_multiple_gp = TRUE;
1384           break;
1385         case OPTION_WARN_ONCE:
1386           config.warn_once = TRUE;
1387           break;
1388         case OPTION_WARN_SECTION_ALIGN:
1389           config.warn_section_align = TRUE;
1390           break;
1391         case OPTION_WARN_SHARED_TEXTREL:
1392           link_info.warn_shared_textrel = TRUE;
1393           break;
1394         case OPTION_WARN_ALTERNATE_EM:
1395           link_info.warn_alternate_em = TRUE;
1396           break;
1397         case OPTION_WHOLE_ARCHIVE:
1398           whole_archive = TRUE;
1399           break;
1400         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1401           add_DT_NEEDED_for_dynamic = TRUE;
1402           break;
1403         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1404           add_DT_NEEDED_for_dynamic = FALSE;
1405           break;
1406         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1407           add_DT_NEEDED_for_regular = TRUE;
1408           break;
1409         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1410           add_DT_NEEDED_for_regular = FALSE;
1411           break;
1412         case OPTION_WRAP:
1413           add_wrap (optarg);
1414           break;
1415         case OPTION_DISCARD_NONE:
1416           link_info.discard = discard_none;
1417           break;
1418         case 'X':
1419           link_info.discard = discard_l;
1420           break;
1421         case 'x':
1422           link_info.discard = discard_all;
1423           break;
1424         case 'Y':
1425           if (CONST_STRNEQ (optarg, "P,"))
1426             optarg += 2;
1427           if (default_dirlist != NULL)
1428             free (default_dirlist);
1429           default_dirlist = xstrdup (optarg);
1430           break;
1431         case 'y':
1432           add_ysym (optarg);
1433           break;
1434         case OPTION_SPARE_DYNAMIC_TAGS:
1435           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1436           break;
1437         case OPTION_SPLIT_BY_RELOC:
1438           if (optarg != NULL)
1439             config.split_by_reloc = strtoul (optarg, NULL, 0);
1440           else
1441             config.split_by_reloc = 32768;
1442           break;
1443         case OPTION_SPLIT_BY_FILE:
1444           if (optarg != NULL)
1445             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1446           else
1447             config.split_by_file = 1;
1448           break;
1449         case OPTION_CHECK_SECTIONS:
1450           command_line.check_section_addresses = 1;
1451           break;
1452         case OPTION_NO_CHECK_SECTIONS:
1453           command_line.check_section_addresses = 0;
1454           break;
1455         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1456           command_line.accept_unknown_input_arch = TRUE;
1457           break;
1458         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1459           command_line.accept_unknown_input_arch = FALSE;
1460           break;
1461         case '(':
1462           lang_enter_group ();
1463           ingroup++;
1464           break;
1465         case ')':
1466           if (! ingroup)
1467             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1468
1469           lang_leave_group ();
1470           ingroup--;
1471           break;
1472
1473         case OPTION_INIT:
1474           link_info.init_function = optarg;
1475           break;
1476
1477         case OPTION_FINI:
1478           link_info.fini_function = optarg;
1479           break;
1480
1481         case OPTION_REDUCE_MEMORY_OVERHEADS:
1482           link_info.reduce_memory_overheads = TRUE;
1483           if (config.hash_table_size == 0)
1484             config.hash_table_size = 1021;
1485           break;
1486
1487         case OPTION_HASH_SIZE:
1488           {
1489             bfd_size_type new_size;
1490
1491             new_size = strtoul (optarg, NULL, 0);
1492             if (new_size)
1493               config.hash_table_size = new_size;
1494             else
1495               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1496           }
1497           break;
1498         }
1499     }
1500
1501   while (ingroup)
1502     {
1503       lang_leave_group ();
1504       ingroup--;
1505     }
1506
1507   if (default_dirlist != NULL)
1508     {
1509       set_default_dirlist (default_dirlist);
1510       free (default_dirlist);
1511     }
1512
1513   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1514     /* FIXME: Should we allow emulations a chance to set this ?  */
1515     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1516
1517   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1518     /* FIXME: Should we allow emulations a chance to set this ?  */
1519     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1520 }
1521
1522 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1523    library search path.  */
1524
1525 static void
1526 set_default_dirlist (char *dirlist_ptr)
1527 {
1528   char *p;
1529
1530   while (1)
1531     {
1532       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1533       if (p != NULL)
1534         *p = '\0';
1535       if (*dirlist_ptr != '\0')
1536         ldfile_add_library_path (dirlist_ptr, TRUE);
1537       if (p == NULL)
1538         break;
1539       dirlist_ptr = p + 1;
1540     }
1541 }
1542
1543 static void
1544 set_section_start (char *sect, char *valstr)
1545 {
1546   const char *end;
1547   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1548   if (*end)
1549     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1550   lang_section_start (sect, exp_intop (val), NULL);
1551 }
1552
1553 static void
1554 set_segment_start (const char *section, char *valstr)
1555 {
1556   const char *name;
1557   const char *end;
1558   segment_type *seg;
1559
1560   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1561   if (*end)
1562     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1563   /* If we already have an entry for this segment, update the existing
1564      value.  */
1565   name = section + 1;
1566   for (seg = segments; seg; seg = seg->next)
1567     if (strcmp (seg->name, name) == 0)
1568       {
1569         seg->value = val;
1570         return;
1571       }
1572   /* There was no existing value so we must create a new segment
1573      entry.  */
1574   seg = (segment_type *) stat_alloc (sizeof (*seg));
1575   seg->name = name;
1576   seg->value = val;
1577   seg->used = FALSE;
1578   /* Add it to the linked list of segments.  */
1579   seg->next = segments;
1580   segments = seg;
1581   /* Historically, -Ttext and friends set the base address of a
1582      particular section.  For backwards compatibility, we still do
1583      that.  If a SEGMENT_START directive is seen, the section address
1584      assignment will be disabled.  */
1585   lang_section_start (section, exp_intop (val), seg);
1586 }
1587
1588 \f
1589 /* Print help messages for the options.  */
1590
1591 static void
1592 help (void)
1593 {
1594   unsigned i;
1595   const char **targets, **pp;
1596   int len;
1597
1598   printf (_("Usage: %s [options] file...\n"), program_name);
1599
1600   printf (_("Options:\n"));
1601   for (i = 0; i < OPTION_COUNT; i++)
1602     {
1603       if (ld_options[i].doc != NULL)
1604         {
1605           bfd_boolean comma;
1606           unsigned j;
1607
1608           printf ("  ");
1609
1610           comma = FALSE;
1611           len = 2;
1612
1613           j = i;
1614           do
1615             {
1616               if (ld_options[j].shortopt != '\0'
1617                   && ld_options[j].control != NO_HELP)
1618                 {
1619                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1620                   len += (comma ? 2 : 0) + 2;
1621                   if (ld_options[j].arg != NULL)
1622                     {
1623                       if (ld_options[j].opt.has_arg != optional_argument)
1624                         {
1625                           printf (" ");
1626                           ++len;
1627                         }
1628                       printf ("%s", _(ld_options[j].arg));
1629                       len += strlen (_(ld_options[j].arg));
1630                     }
1631                   comma = TRUE;
1632                 }
1633               ++j;
1634             }
1635           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1636
1637           j = i;
1638           do
1639             {
1640               if (ld_options[j].opt.name != NULL
1641                   && ld_options[j].control != NO_HELP)
1642                 {
1643                   int two_dashes =
1644                     (ld_options[j].control == TWO_DASHES
1645                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1646
1647                   printf ("%s-%s%s",
1648                           comma ? ", " : "",
1649                           two_dashes ? "-" : "",
1650                           ld_options[j].opt.name);
1651                   len += ((comma ? 2 : 0)
1652                           + 1
1653                           + (two_dashes ? 1 : 0)
1654                           + strlen (ld_options[j].opt.name));
1655                   if (ld_options[j].arg != NULL)
1656                     {
1657                       printf (" %s", _(ld_options[j].arg));
1658                       len += 1 + strlen (_(ld_options[j].arg));
1659                     }
1660                   comma = TRUE;
1661                 }
1662               ++j;
1663             }
1664           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1665
1666           if (len >= 30)
1667             {
1668               printf ("\n");
1669               len = 0;
1670             }
1671
1672           for (; len < 30; len++)
1673             putchar (' ');
1674
1675           printf ("%s\n", _(ld_options[i].doc));
1676         }
1677     }
1678   printf (_("  @FILE"));
1679   for (len = strlen ("  @FILE"); len < 30; len++)
1680     putchar (' ');
1681   printf (_("Read options from FILE\n"));
1682
1683   /* Note: Various tools (such as libtool) depend upon the
1684      format of the listings below - do not change them.  */
1685   /* xgettext:c-format */
1686   printf (_("%s: supported targets:"), program_name);
1687   targets = bfd_target_list ();
1688   for (pp = targets; *pp != NULL; pp++)
1689     printf (" %s", *pp);
1690   free (targets);
1691   printf ("\n");
1692
1693   /* xgettext:c-format */
1694   printf (_("%s: supported emulations: "), program_name);
1695   ldemul_list_emulations (stdout);
1696   printf ("\n");
1697
1698   /* xgettext:c-format */
1699   printf (_("%s: emulation specific options:\n"), program_name);
1700   ldemul_list_emulation_options (stdout);
1701   printf ("\n");
1702
1703   if (REPORT_BUGS_TO[0])
1704     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1705 }