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