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 #ifdef ENABLE_PLUGINS
  44 #include "plugin.h"
  45 #endif /* ENABLE_PLUGINS */
  46
  47 #ifndef PATH_SEPARATOR
  48 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  49 #define PATH_SEPARATOR ';'
  50 #else
  51 #define PATH_SEPARATOR ':'
  52 #endif
  53 #endif
  54
  55 /* Somewhere above, sys/stat.h got included . . . .  */
  56 #if !defined(S_ISDIR) && defined(S_IFDIR)
  57 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  58 #endif
  59
  60 static void set_default_dirlist (char *);
  61 static void set_section_start (char *, char *);
  62 static void set_segment_start (const char *, char *);
  63 static void help (void);
  64
  65 /* Non-zero if we are processing a --defsym from the command line.  */
  66 int parsing_defsym = 0;
  67
  68 /* Codes used for the long options with no short synonyms.  150 isn't
  69    special; it's just an arbitrary non-ASCII char value.  */
  70 enum option_values
  71 {
  72   OPTION_ASSERT = 150,
  73   OPTION_CALL_SHARED,
  74   OPTION_CREF,
  75   OPTION_DEFSYM,
  76   OPTION_DEMANGLE,
  77   OPTION_DYNAMIC_LINKER,
  78   OPTION_SYSROOT,
  79   OPTION_EB,
  80   OPTION_EL,
  81   OPTION_EMBEDDED_RELOCS,
  82   OPTION_EXPORT_DYNAMIC,
  83   OPTION_NO_EXPORT_DYNAMIC,
  84   OPTION_HELP,
  85   OPTION_IGNORE,
  86   OPTION_MAP,
  87   OPTION_NO_DEMANGLE,
  88   OPTION_NO_KEEP_MEMORY,
  89   OPTION_NO_WARN_MISMATCH,
  90   OPTION_NO_WARN_SEARCH_MISMATCH,
  91   OPTION_NOINHIBIT_EXEC,
  92   OPTION_NON_SHARED,
  93   OPTION_NO_WHOLE_ARCHIVE,
  94   OPTION_OFORMAT,
  95   OPTION_RELAX,
  96   OPTION_NO_RELAX,
  97   OPTION_RETAIN_SYMBOLS_FILE,
  98   OPTION_RPATH,
  99   OPTION_RPATH_LINK,
 100   OPTION_SHARED,
 101   OPTION_SONAME,
 102   OPTION_SORT_COMMON,
 103   OPTION_SORT_SECTION,
 104   OPTION_STATS,
 105   OPTION_SYMBOLIC,
 106   OPTION_SYMBOLIC_FUNCTIONS,
 107   OPTION_TASK_LINK,
 108   OPTION_TBSS,
 109   OPTION_TDATA,
 110   OPTION_TTEXT,
 111   OPTION_TTEXT_SEGMENT,
 112   OPTION_TRADITIONAL_FORMAT,
 113   OPTION_UR,
 114   OPTION_VERBOSE,
 115   OPTION_VERSION,
 116   OPTION_VERSION_SCRIPT,
 117   OPTION_VERSION_EXPORTS_SECTION,
 118   OPTION_DYNAMIC_LIST,
 119   OPTION_DYNAMIC_LIST_CPP_NEW,
 120   OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
 121   OPTION_DYNAMIC_LIST_DATA,
 122   OPTION_WARN_COMMON,
 123   OPTION_WARN_CONSTRUCTORS,
 124   OPTION_WARN_FATAL,
 125   OPTION_NO_WARN_FATAL,
 126   OPTION_WARN_MULTIPLE_GP,
 127   OPTION_WARN_ONCE,
 128   OPTION_WARN_SECTION_ALIGN,
 129   OPTION_SPLIT_BY_RELOC,
 130   OPTION_SPLIT_BY_FILE ,
 131   OPTION_WHOLE_ARCHIVE,
 132   OPTION_ADD_DT_NEEDED_FOR_DYNAMIC,
 133   OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC,
 134   OPTION_ADD_DT_NEEDED_FOR_REGULAR,
 135   OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR,
 136   OPTION_WRAP,
 137   OPTION_FORCE_EXE_SUFFIX,
 138   OPTION_GC_SECTIONS,
 139   OPTION_NO_GC_SECTIONS,
 140   OPTION_PRINT_GC_SECTIONS,
 141   OPTION_NO_PRINT_GC_SECTIONS,
 142   OPTION_HASH_SIZE,
 143   OPTION_CHECK_SECTIONS,
 144   OPTION_NO_CHECK_SECTIONS,
 145   OPTION_NO_UNDEFINED,
 146   OPTION_INIT,
 147   OPTION_FINI,
 148   OPTION_SECTION_START,
 149   OPTION_UNIQUE,
 150   OPTION_TARGET_HELP,
 151   OPTION_ALLOW_SHLIB_UNDEFINED,
 152   OPTION_NO_ALLOW_SHLIB_UNDEFINED,
 153   OPTION_ALLOW_MULTIPLE_DEFINITION,
 154   OPTION_NO_UNDEFINED_VERSION,
 155   OPTION_DEFAULT_SYMVER,
 156   OPTION_DEFAULT_IMPORTED_SYMVER,
 157   OPTION_DISCARD_NONE,
 158   OPTION_SPARE_DYNAMIC_TAGS,
 159   OPTION_NO_DEFINE_COMMON,
 160   OPTION_NOSTDLIB,
 161   OPTION_NO_OMAGIC,
 162   OPTION_STRIP_DISCARDED,
 163   OPTION_NO_STRIP_DISCARDED,
 164   OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
 165   OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
 166   OPTION_PIE,
 167   OPTION_UNRESOLVED_SYMBOLS,
 168   OPTION_WARN_UNRESOLVED_SYMBOLS,
 169   OPTION_ERROR_UNRESOLVED_SYMBOLS,
 170   OPTION_WARN_SHARED_TEXTREL,
 171   OPTION_WARN_ALTERNATE_EM,
 172   OPTION_REDUCE_MEMORY_OVERHEADS,
 173 #ifdef ENABLE_PLUGINS
 174   OPTION_PLUGIN,
 175   OPTION_PLUGIN_OPT,
 176 #endif /* ENABLE_PLUGINS */
 177   OPTION_DEFAULT_SCRIPT,
 178 };
 179
 180 /* The long options.  This structure is used for both the option
 181    parsing and the help text.  */
 182
 183 enum control_enum {
 184   /* Use one dash before long option name.  */
 185   ONE_DASH,
 186   /* Use two dashes before long option name.  */
 187   TWO_DASHES,
 188   /* Only accept two dashes before the long option name.
 189      This is an overloading of the use of this enum, since originally it
 190      was only intended to tell the --help display function how to display
 191      the long option name.  This feature was added in order to resolve
 192      the confusion about the -omagic command line switch.  Is it setting
 193      the output file name to "magic" or is it setting the NMAGIC flag on
 194      the output ?  It has been decided that it is setting the output file
 195      name, and that if you want to set the NMAGIC flag you should use -N
 196      or --omagic.  */
 197   EXACTLY_TWO_DASHES,
 198   /* Don't mention this option in --help output.  */
 199   NO_HELP
 200 };
 201
 202 struct ld_option
 203 {
 204   /* The long option information.  */
 205   struct option opt;
 206   /* The short option with the same meaning ('\0' if none).  */
 207   char shortopt;
 208   /* The name of the argument (NULL if none).  */
 209   const char *arg;
 210   /* The documentation string.  If this is NULL, this is a synonym for
 211      the previous option.  */
 212   const char *doc;
 213   enum control_enum control;
 214 };
 215
 216 static const struct ld_option ld_options[] =
 217 {
 218   { {NULL, required_argument, NULL, '\0'},
 219     'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 220     ONE_DASH },
 221   { {"architecture", required_argument, NULL, 'A'},
 222     'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 223   { {"format", required_argument, NULL, 'b'},
 224     'b', N_("TARGET"), N_("Specify target for following input files"),
 225     TWO_DASHES },
 226   { {"mri-script", required_argument, NULL, 'c'},
 227     'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 228   { {"dc", no_argument, NULL, 'd'},
 229     'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 230   { {"dp", no_argument, NULL, 'd'},
 231     '\0', NULL, NULL, ONE_DASH },
 232   { {"entry", required_argument, NULL, 'e'},
 233     'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 234   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 235     'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 236   { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
 237     '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
 238   { {"EB", no_argument, NULL, OPTION_EB},
 239     '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 240   { {"EL", no_argument, NULL, OPTION_EL},
 241     '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 242   { {"auxiliary", required_argument, NULL, 'f'},
 243     'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 244     TWO_DASHES },
 245   { {"filter", required_argument, NULL, 'F'},
 246     'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
 247     TWO_DASHES },
 248   { {NULL, no_argument, NULL, '\0'},
 249     'g', NULL, N_("Ignored"), ONE_DASH },
 250   { {"gpsize", required_argument, NULL, 'G'},
 251     'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 252     TWO_DASHES },
 253   { {"soname", required_argument, NULL, OPTION_SONAME},
 254     'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 255   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 256     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
 257     TWO_DASHES },
 258   { {"library", required_argument, NULL, 'l'},
 259     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 260   { {"library-path", required_argument, NULL, 'L'},
 261     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 262     TWO_DASHES },
 263   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 264     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 265   { {NULL, required_argument, NULL, '\0'},
 266     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 267   { {"print-map", no_argument, NULL, 'M'},
 268     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 269   { {"nmagic", no_argument, NULL, 'n'},
 270     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 271   { {"omagic", no_argument, NULL, 'N'},
 272     'N', NULL, N_("Do not page align data, do not make text readonly"),
 273     EXACTLY_TWO_DASHES },
 274   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 275     '\0', NULL, N_("Page align data, make text readonly"),
 276     EXACTLY_TWO_DASHES },
 277   { {"output", required_argument, NULL, 'o'},
 278     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 279   { {NULL, required_argument, NULL, '\0'},
 280     'O', NULL, N_("Optimize output file"), ONE_DASH },
 281 #ifdef ENABLE_PLUGINS
 282   { {"plugin", required_argument, NULL, OPTION_PLUGIN},
 283     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
 284   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
 285     '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
 286 #endif /* ENABLE_PLUGINS */
 287   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 288     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 289   { {"emit-relocs", no_argument, NULL, 'q'},
 290     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 291   { {"relocatable", no_argument, NULL, 'r'},
 292     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 293   { {NULL, no_argument, NULL, '\0'},
 294     'i', NULL, NULL, ONE_DASH },
 295   { {"just-symbols", required_argument, NULL, 'R'},
 296     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 297     TWO_DASHES },
 298   { {"strip-all", no_argument, NULL, 's'},
 299     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 300   { {"strip-debug", no_argument, NULL, 'S'},
 301     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 302   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 303     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 304   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 305     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 306   { {"trace", no_argument, NULL, 't'},
 307     't', NULL, N_("Trace file opens"), TWO_DASHES },
 308   { {"script", required_argument, NULL, 'T'},
 309     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 310   { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 311     '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
 312   { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 313     '\0', NULL, NULL, ONE_DASH },
 314   { {"undefined", required_argument, NULL, 'u'},
 315     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 316     TWO_DASHES },
 317   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 318     '\0', N_("[=SECTION]"),
 319     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 320   { {"Ur", no_argument, NULL, OPTION_UR},
 321     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 322   { {"version", no_argument, NULL, OPTION_VERSION},
 323     'v', NULL, N_("Print version information"), TWO_DASHES },
 324   { {NULL, no_argument, NULL, '\0'},
 325     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 326   { {"discard-all", no_argument, NULL, 'x'},
 327     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 328   { {"discard-locals", no_argument, NULL, 'X'},
 329     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 330   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 331     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 332   { {"trace-symbol", required_argument, NULL, 'y'},
 333     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 334   { {NULL, required_argument, NULL, '\0'},
 335     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 336     ONE_DASH },
 337   { {"start-group", no_argument, NULL, '('},
 338     '(', NULL, N_("Start a group"), TWO_DASHES },
 339   { {"end-group", no_argument, NULL, ')'},
 340     ')', NULL, N_("End a group"), TWO_DASHES },
 341   { {"accept-unknown-input-arch", no_argument, NULL,
 342      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 343     '\0', NULL,
 344     N_("Accept input files whose architecture cannot be determined"),
 345     TWO_DASHES },
 346   { {"no-accept-unknown-input-arch", no_argument, NULL,
 347      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 348     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 349     TWO_DASHES },
 350
 351   /* The next two options are deprecated because of their similarity to
 352      --as-needed and --no-as-needed.  They have been replaced by
 353      --resolve-implicit-dynamic-symbols and
 354      --no-resolve-implicit-dynamic-symbols.  */
 355   { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 356     '\0', NULL, NULL, NO_HELP },
 357   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 358     '\0', NULL, NULL, NO_HELP },
 359
 360   { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
 361     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 362     TWO_DASHES },
 363   { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
 364     '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
 365                    "                                the command line"),
 366     TWO_DASHES },
 367   { {"assert", required_argument, NULL, OPTION_ASSERT},
 368     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 369   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 370     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 371   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 372     '\0', NULL, NULL, ONE_DASH },
 373   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 374     '\0', NULL, NULL, ONE_DASH },
 375   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 376     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 377   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 378     '\0', NULL, NULL, ONE_DASH },
 379   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 380     '\0', NULL, NULL, ONE_DASH },
 381   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 382     '\0', NULL, NULL, ONE_DASH },
 383   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 384     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 385   { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
 386     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 387   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 388     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 389     TWO_DASHES },
 390   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 391     '\0', NULL, N_("Do not check section addresses for overlaps"),
 392     TWO_DASHES },
 393   { {"copy-dt-needed-entries", no_argument, NULL,
 394      OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 395     '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
 396     TWO_DASHES },
 397   { {"no-copy-dt-needed-entries", no_argument, NULL,
 398      OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 399     '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
 400     TWO_DASHES },
 401
 402   { {"cref", no_argument, NULL, OPTION_CREF},
 403     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 404   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 405     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 406   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 407     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 408     TWO_DASHES },
 409   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 410     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 411   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 412     '\0', NULL, N_("Treat warnings as errors"),
 413     TWO_DASHES },
 414   { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
 415     '\0', NULL, N_("Do not treat warnings as errors (default)"),
 416     TWO_DASHES },
 417   { {"fini", required_argument, NULL, OPTION_FINI},
 418     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 419   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 420     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 421   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 422     '\0', NULL, N_("Remove unused sections (on some targets)"),
 423     TWO_DASHES },
 424   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 425     '\0', NULL, N_("Don't remove unused sections (default)"),
 426     TWO_DASHES },
 427   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 428     '\0', NULL, N_("List removed unused sections on stderr"),
 429     TWO_DASHES },
 430   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 431     '\0', NULL, N_("Do not list removed unused sections"),
 432     TWO_DASHES },
 433   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 434     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 435     TWO_DASHES },
 436   { {"help", no_argument, NULL, OPTION_HELP},
 437     '\0', NULL, N_("Print option help"), TWO_DASHES },
 438   { {"init", required_argument, NULL, OPTION_INIT},
 439     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 440   { {"Map", required_argument, NULL, OPTION_MAP},
 441     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 442   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 443     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 444   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 445     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 446   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 447     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 448   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 449     '\0', NULL, N_("Do not allow unresolved references in object files"),
 450     TWO_DASHES },
 451   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 452     '\0', NULL, N_("Allow unresolved references in shared libaries"),
 453     TWO_DASHES },
 454   { {"no-allow-shlib-undefined", no_argument, NULL,
 455      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 456     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 457     TWO_DASHES },
 458   { {"allow-multiple-definition", no_argument, NULL,
 459      OPTION_ALLOW_MULTIPLE_DEFINITION},
 460     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 461   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 462     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 463   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 464     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 465   { {"default-imported-symver", no_argument, NULL,
 466       OPTION_DEFAULT_IMPORTED_SYMVER},
 467     '\0', NULL, N_("Create default symbol version for imported symbols"),
 468     TWO_DASHES },
 469   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 470     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 471   { {"no-warn-search-mismatch", no_argument, NULL,
 472      OPTION_NO_WARN_SEARCH_MISMATCH},
 473     '\0', NULL, N_("Don't warn on finding an incompatible library"),
 474     TWO_DASHES},
 475   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 476     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 477   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 478     '\0', NULL, N_("Create an output file even if errors occur"),
 479     TWO_DASHES },
 480   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 481     '\0', NULL, NULL, NO_HELP },
 482   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 483     '\0', NULL, N_("Only use library directories specified on\n"
 484                    "                                the command line"),
 485     ONE_DASH },
 486   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 487     '\0', N_("TARGET"), N_("Specify target of output file"),
 488     EXACTLY_TWO_DASHES },
 489   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 490     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 491   { {"reduce-memory-overheads", no_argument, NULL,
 492      OPTION_REDUCE_MEMORY_OVERHEADS},
 493     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 494     TWO_DASHES },
 495   { {"relax", no_argument, NULL, OPTION_RELAX},
 496     '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
 497   { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
 498     '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
 499   { {"retain-symbols-file", required_argument, NULL,
 500      OPTION_RETAIN_SYMBOLS_FILE},
 501     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 502   { {"rpath", required_argument, NULL, OPTION_RPATH},
 503     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 504   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 505     '\0', N_("PATH"), N_("Set link time shared library search path"),
 506     ONE_DASH },
 507   { {"shared", no_argument, NULL, OPTION_SHARED},
 508     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 509   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 510     '\0', NULL, NULL, ONE_DASH },
 511   { {"pie", no_argument, NULL, OPTION_PIE},
 512     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 513   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 514     '\0', NULL, NULL, TWO_DASHES },
 515   { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
 516     '\0', N_("[=ascending|descending]"),
 517     N_("Sort common symbols by alignment [in specified order]"),
 518     TWO_DASHES },
 519   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 520     '\0', NULL, NULL, NO_HELP },
 521   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 522     '\0', N_("name|alignment"),
 523     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 524   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 525     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 526     TWO_DASHES },
 527   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 528     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 529     TWO_DASHES },
 530   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 531     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 532     TWO_DASHES },
 533   { {"stats", no_argument, NULL, OPTION_STATS},
 534     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 535   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 536     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 537   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 538     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 539   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 540     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 541   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 542     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 543     TWO_DASHES },
 544   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 545     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 546   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 547     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 548   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 549     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 550   { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
 551     '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
 552   { {"unresolved-symbols=<method>", required_argument, NULL,
 553      OPTION_UNRESOLVED_SYMBOLS},
 554     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 555                    "                                ignore-all, report-all, ignore-in-object-files,\n"
 556                    "                                ignore-in-shared-libs"),
 557     TWO_DASHES },
 558   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 559     '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 560   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 561     '\0', NULL, NULL, NO_HELP },
 562   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 563     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 564   { {"version-exports-section", required_argument, NULL,
 565      OPTION_VERSION_EXPORTS_SECTION },
 566     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 567                            "                                SYMBOL as the version."),
 568     TWO_DASHES },
 569   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 570     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 571   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 572     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 573   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 574     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 575   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 576     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 577   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 578     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 579   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 580     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 581     TWO_DASHES },
 582   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 583     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 584   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 585     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 586   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 587     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 588     TWO_DASHES },
 589   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 590     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 591     TWO_DASHES },
 592   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 593     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 594     TWO_DASHES },
 595   { {"warn-unresolved-symbols", no_argument, NULL,
 596      OPTION_WARN_UNRESOLVED_SYMBOLS},
 597     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 598   { {"error-unresolved-symbols", no_argument, NULL,
 599      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 600     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 601   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 602     '\0', NULL, N_("Include all objects from following archives"),
 603     TWO_DASHES },
 604   { {"wrap", required_argument, NULL, OPTION_WRAP},
 605     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 606 };
 607
 608 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 609
 610 void
 611 parse_args (unsigned argc, char **argv)
 612 {
 613   unsigned i;
 614   int is, il, irl;
 615   int ingroup = 0;
 616   char *default_dirlist = NULL;
 617   char *shortopts;
 618   struct option *longopts;
 619   struct option *really_longopts;
 620   int last_optind;
 621   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 622
 623   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 624   longopts = (struct option *)
 625       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 626   really_longopts = (struct option *)
 627       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 628
 629   /* Starting the short option string with '-' is for programs that
 630      expect options and other ARGV-elements in any order and that care about
 631      the ordering of the two.  We describe each non-option ARGV-element
 632      as if it were the argument of an option with character code 1.  */
 633   shortopts[0] = '-';
 634   is = 1;
 635   il = 0;
 636   irl = 0;
 637   for (i = 0; i < OPTION_COUNT; i++)
 638     {
 639       if (ld_options[i].shortopt != '\0')
 640         {
 641           shortopts[is] = ld_options[i].shortopt;
 642           ++is;
 643           if (ld_options[i].opt.has_arg == required_argument
 644               || ld_options[i].opt.has_arg == optional_argument)
 645             {
 646               shortopts[is] = ':';
 647               ++is;
 648               if (ld_options[i].opt.has_arg == optional_argument)
 649                 {
 650                   shortopts[is] = ':';
 651                   ++is;
 652                 }
 653             }
 654         }
 655       if (ld_options[i].opt.name != NULL)
 656         {
 657           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 658             {
 659               really_longopts[irl] = ld_options[i].opt;
 660               ++irl;
 661             }
 662           else
 663             {
 664               longopts[il] = ld_options[i].opt;
 665               ++il;
 666             }
 667         }
 668     }
 669   shortopts[is] = '\0';
 670   longopts[il].name = NULL;
 671   really_longopts[irl].name = NULL;
 672
 673   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 674
 675   /* The -G option is ambiguous on different platforms.  Sometimes it
 676      specifies the largest data size to put into the small data
 677      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 678      the first form takes an argument, while the second does not.
 679
 680      We need to permit the --shared form because on some platforms,
 681      such as Solaris, gcc -shared will pass -G to the linker.
 682
 683      To permit either usage, we look through the argument list.  If we
 684      find -G not followed by a number, we change it into --shared.
 685      This will work for most normal cases.  */
 686   for (i = 1; i < argc; i++)
 687     if (strcmp (argv[i], "-G") == 0
 688         && (i + 1 >= argc
 689             || ! ISDIGIT (argv[i + 1][0])))
 690       argv[i] = (char *) "--shared";
 691
 692   /* Because we permit long options to start with a single dash, and
 693      we have a --library option, and the -l option is conventionally
 694      used with an immediately following argument, we can have bad
 695      results if somebody tries to use -l with a library whose name
 696      happens to start with "ibrary", as in -li.  We avoid problems by
 697      simply turning -l into --library.  This means that users will
 698      have to use two dashes in order to use --library, which is OK
 699      since that's how it is documented.
 700
 701      FIXME: It's possible that this problem can arise for other short
 702      options as well, although the user does always have the recourse
 703      of adding a space between the option and the argument.  */
 704   for (i = 1; i < argc; i++)
 705     {
 706       if (argv[i][0] == '-'
 707           && argv[i][1] == 'l'
 708           && argv[i][2] != '\0')
 709         {
 710           char *n;
 711
 712           n = (char *) xmalloc (strlen (argv[i]) + 20);
 713           sprintf (n, "--library=%s", argv[i] + 2);
 714           argv[i] = n;
 715         }
 716     }
 717
 718   last_optind = -1;
 719   while (1)
 720     {
 721       int longind;
 722       int optc;
 723
 724       /* Using last_optind lets us avoid calling ldemul_parse_args
 725          multiple times on a single option, which would lead to
 726          confusion in the internal static variables maintained by
 727          getopt.  This could otherwise happen for an argument like
 728          -nx, in which the -n is parsed as a single option, and we
 729          loop around to pick up the -x.  */
 730       if (optind != last_optind)
 731         if (ldemul_parse_args (argc, argv))
 732           continue;
 733
 734       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 735          can indicate a long option.  */
 736       opterr = 0;
 737       last_optind = optind;
 738       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 739       if (optc == '?')
 740         {
 741           optind = last_optind;
 742           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 743         }
 744
 745       if (ldemul_handle_option (optc))
 746         continue;
 747
 748       if (optc == -1)
 749         break;
 750
 751       switch (optc)
 752         {
 753         case '?':
 754           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 755           /* Fall through.  */
 756
 757         default:
 758           einfo (_("%P%F: use the --help option for usage information\n"));
 759
 760         case 1:                 /* File name.  */
 761           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 762           break;
 763
 764         case OPTION_IGNORE:
 765           break;
 766         case 'a':
 767           /* For HP/UX compatibility.  Actually -a shared should mean
 768              ``use only shared libraries'' but, then, we don't
 769              currently support shared libraries on HP/UX anyhow.  */
 770           if (strcmp (optarg, "archive") == 0)
 771             config.dynamic_link = FALSE;
 772           else if (strcmp (optarg, "shared") == 0
 773                    || strcmp (optarg, "default") == 0)
 774             config.dynamic_link = TRUE;
 775           else
 776             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 777           break;
 778         case OPTION_ASSERT:
 779           /* FIXME: We just ignore these, but we should handle them.  */
 780           if (strcmp (optarg, "definitions") == 0)
 781             ;
 782           else if (strcmp (optarg, "nodefinitions") == 0)
 783             ;
 784           else if (strcmp (optarg, "nosymbolic") == 0)
 785             ;
 786           else if (strcmp (optarg, "pure-text") == 0)
 787             ;
 788           else
 789             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 790           break;
 791         case 'A':
 792           ldfile_add_arch (optarg);
 793           break;
 794         case 'b':
 795           lang_add_target (optarg);
 796           break;
 797         case 'c':
 798           ldfile_open_command_file (optarg);
 799           parser_input = input_mri_script;
 800           yyparse ();
 801           break;
 802         case OPTION_CALL_SHARED:
 803           config.dynamic_link = TRUE;
 804           break;
 805         case OPTION_NON_SHARED:
 806           config.dynamic_link = FALSE;
 807           break;
 808         case OPTION_CREF:
 809           command_line.cref = TRUE;
 810           link_info.notice_all = TRUE;
 811           break;
 812         case 'd':
 813           command_line.force_common_definition = TRUE;
 814           break;
 815         case OPTION_DEFSYM:
 816           lex_string = optarg;
 817           lex_redirect (optarg);
 818           parser_input = input_defsym;
 819           parsing_defsym = 1;
 820           yyparse ();
 821           parsing_defsym = 0;
 822           lex_string = NULL;
 823           break;
 824         case OPTION_DEMANGLE:
 825           demangling = TRUE;
 826           if (optarg != NULL)
 827             {
 828               enum demangling_styles style;
 829
 830               style = cplus_demangle_name_to_style (optarg);
 831               if (style == unknown_demangling)
 832                 einfo (_("%F%P: unknown demangling style `%s'"),
 833                        optarg);
 834
 835               cplus_demangle_set_style (style);
 836             }
 837           break;
 838         case 'I':               /* Used on Solaris.  */
 839         case OPTION_DYNAMIC_LINKER:
 840           command_line.interpreter = optarg;
 841           break;
 842         case OPTION_SYSROOT:
 843           /* Already handled in ldmain.c.  */
 844           break;
 845         case OPTION_EB:
 846           command_line.endian = ENDIAN_BIG;
 847           break;
 848         case OPTION_EL:
 849           command_line.endian = ENDIAN_LITTLE;
 850           break;
 851         case OPTION_EMBEDDED_RELOCS:
 852           command_line.embedded_relocs = TRUE;
 853           break;
 854         case OPTION_EXPORT_DYNAMIC:
 855         case 'E': /* HP/UX compatibility.  */
 856           link_info.export_dynamic = TRUE;
 857           break;
 858         case OPTION_NO_EXPORT_DYNAMIC:
 859           link_info.export_dynamic = FALSE;
 860           break;
 861         case 'e':
 862           lang_add_entry (optarg, TRUE);
 863           break;
 864         case 'f':
 865           if (command_line.auxiliary_filters == NULL)
 866             {
 867               command_line.auxiliary_filters = (char **)
 868                   xmalloc (2 * sizeof (char *));
 869               command_line.auxiliary_filters[0] = optarg;
 870               command_line.auxiliary_filters[1] = NULL;
 871             }
 872           else
 873             {
 874               int c;
 875               char **p;
 876
 877               c = 0;
 878               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 879                 ++c;
 880               command_line.auxiliary_filters = (char **)
 881                   xrealloc (command_line.auxiliary_filters,
 882                             (c + 2) * sizeof (char *));
 883               command_line.auxiliary_filters[c] = optarg;
 884               command_line.auxiliary_filters[c + 1] = NULL;
 885             }
 886           break;
 887         case 'F':
 888           command_line.filter_shlib = optarg;
 889           break;
 890         case OPTION_FORCE_EXE_SUFFIX:
 891           command_line.force_exe_suffix = TRUE;
 892           break;
 893         case 'G':
 894           {
 895             char *end;
 896             g_switch_value = strtoul (optarg, &end, 0);
 897             if (*end)
 898               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 899           }
 900           break;
 901         case 'g':
 902           /* Ignore.  */
 903           break;
 904         case OPTION_GC_SECTIONS:
 905           link_info.gc_sections = TRUE;
 906           break;
 907         case OPTION_PRINT_GC_SECTIONS:
 908           link_info.print_gc_sections = TRUE;
 909           break;
 910         case OPTION_HELP:
 911           help ();
 912           xexit (0);
 913           break;
 914         case 'L':
 915           ldfile_add_library_path (optarg, TRUE);
 916           break;
 917         case 'l':
 918           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 919           break;
 920         case 'M':
 921           config.map_filename = "-";
 922           break;
 923         case 'm':
 924           /* Ignore.  Was handled in a pre-parse.   */
 925           break;
 926         case OPTION_MAP:
 927           config.map_filename = optarg;
 928           break;
 929         case 'N':
 930           config.text_read_only = FALSE;
 931           config.magic_demand_paged = FALSE;
 932           config.dynamic_link = FALSE;
 933           break;
 934         case OPTION_NO_OMAGIC:
 935           config.text_read_only = TRUE;
 936           config.magic_demand_paged = TRUE;
 937           /* NB/ Does not set dynamic_link to TRUE.
 938              Use --call-shared or -Bdynamic for this.  */
 939           break;
 940         case 'n':
 941           config.magic_demand_paged = FALSE;
 942           config.dynamic_link = FALSE;
 943           break;
 944         case OPTION_NO_DEFINE_COMMON:
 945           command_line.inhibit_common_definition = TRUE;
 946           break;
 947         case OPTION_NO_DEMANGLE:
 948           demangling = FALSE;
 949           break;
 950         case OPTION_NO_GC_SECTIONS:
 951           link_info.gc_sections = FALSE;
 952           break;
 953         case OPTION_NO_PRINT_GC_SECTIONS:
 954           link_info.print_gc_sections = FALSE;
 955           break;
 956         case OPTION_NO_KEEP_MEMORY:
 957           link_info.keep_memory = FALSE;
 958           break;
 959         case OPTION_NO_UNDEFINED:
 960           link_info.unresolved_syms_in_objects
 961             = how_to_report_unresolved_symbols;
 962           break;
 963         case OPTION_ALLOW_SHLIB_UNDEFINED:
 964           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 965           break;
 966         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 967           link_info.unresolved_syms_in_shared_libs
 968             = how_to_report_unresolved_symbols;
 969           break;
 970         case OPTION_UNRESOLVED_SYMBOLS:
 971           if (strcmp (optarg, "ignore-all") == 0)
 972             {
 973               link_info.unresolved_syms_in_objects = RM_IGNORE;
 974               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 975             }
 976           else if (strcmp (optarg, "report-all") == 0)
 977             {
 978               link_info.unresolved_syms_in_objects
 979                 = how_to_report_unresolved_symbols;
 980               link_info.unresolved_syms_in_shared_libs
 981                 = how_to_report_unresolved_symbols;
 982             }
 983           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 984             {
 985               link_info.unresolved_syms_in_objects = RM_IGNORE;
 986               link_info.unresolved_syms_in_shared_libs
 987                 = how_to_report_unresolved_symbols;
 988             }
 989           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 990             {
 991               link_info.unresolved_syms_in_objects
 992                 = how_to_report_unresolved_symbols;
 993               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 994             }
 995           else
 996             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
 997           break;
 998         case OPTION_WARN_UNRESOLVED_SYMBOLS:
 999           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
1000           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
1001             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
1002           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
1003             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
1004           break;
1005
1006         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
1007           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
1008           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
1009             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1010           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
1011             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
1012           break;
1013         case OPTION_ALLOW_MULTIPLE_DEFINITION:
1014           link_info.allow_multiple_definition = TRUE;
1015           break;
1016         case OPTION_NO_UNDEFINED_VERSION:
1017           link_info.allow_undefined_version = FALSE;
1018           break;
1019         case OPTION_DEFAULT_SYMVER:
1020           link_info.create_default_symver = TRUE;
1021           break;
1022         case OPTION_DEFAULT_IMPORTED_SYMVER:
1023           link_info.default_imported_symver = TRUE;
1024           break;
1025         case OPTION_NO_WARN_MISMATCH:
1026           command_line.warn_mismatch = FALSE;
1027           break;
1028         case OPTION_NO_WARN_SEARCH_MISMATCH:
1029           command_line.warn_search_mismatch = FALSE;
1030           break;
1031         case OPTION_NOINHIBIT_EXEC:
1032           force_make_executable = TRUE;
1033           break;
1034         case OPTION_NOSTDLIB:
1035           config.only_cmd_line_lib_dirs = TRUE;
1036           break;
1037         case OPTION_NO_WHOLE_ARCHIVE:
1038           whole_archive = FALSE;
1039           break;
1040         case 'O':
1041           /* FIXME "-O<non-digits> <value>" used to set the address of
1042              section <non-digits>.  Was this for compatibility with
1043              something, or can we create a new option to do that
1044              (with a syntax similar to -defsym)?
1045              getopt can't handle two args to an option without kludges.  */
1046
1047           /* Enable optimizations of output files.  */
1048           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1049           break;
1050         case 'o':
1051           lang_add_output (optarg, 0);
1052           break;
1053         case OPTION_OFORMAT:
1054           lang_add_output_format (optarg, NULL, NULL, 0);
1055           break;
1056 #ifdef ENABLE_PLUGINS
1057         case OPTION_PLUGIN:
1058           if (plugin_opt_plugin (optarg))
1059             einfo (_("%P%F: %s: error loading plugin\n"),
1060                    plugin_error_plugin ());
1061           break;
1062         case OPTION_PLUGIN_OPT:
1063           if (plugin_opt_plugin_arg (optarg))
1064             einfo(_("%P%F: bad -plugin-opt option\n"));
1065           break;
1066 #endif /* ENABLE_PLUGINS */
1067         case 'q':
1068           link_info.emitrelocations = TRUE;
1069           break;
1070         case 'i':
1071         case 'r':
1072           if (optind == last_optind)
1073             /* This can happen if the user put "-rpath,a" on the command
1074                line.  (Or something similar.  The comma is important).
1075                Getopt becomes confused and thinks that this is a -r option
1076                but it cannot parse the text after the -r so it refuses to
1077                increment the optind counter.  Detect this case and issue
1078                an error message here.  We cannot just make this a warning,
1079                increment optind, and continue because getopt is too confused
1080                and will seg-fault the next time around.  */
1081             einfo(_("%P%F: bad -rpath option\n"));
1082
1083           link_info.relocatable = TRUE;
1084           config.build_constructors = FALSE;
1085           config.magic_demand_paged = FALSE;
1086           config.text_read_only = FALSE;
1087           config.dynamic_link = FALSE;
1088           break;
1089         case 'R':
1090           /* The GNU linker traditionally uses -R to mean to include
1091              only the symbols from a file.  The Solaris linker uses -R
1092              to set the path used by the runtime linker to find
1093              libraries.  This is the GNU linker -rpath argument.  We
1094              try to support both simultaneously by checking the file
1095              named.  If it is a directory, rather than a regular file,
1096              we assume -rpath was meant.  */
1097           {
1098             struct stat s;
1099
1100             if (stat (optarg, &s) >= 0
1101                 && ! S_ISDIR (s.st_mode))
1102               {
1103                 lang_add_input_file (optarg,
1104                                      lang_input_file_is_symbols_only_enum,
1105                                      NULL);
1106                 break;
1107               }
1108           }
1109           /* Fall through.  */
1110         case OPTION_RPATH:
1111           if (command_line.rpath == NULL)
1112             command_line.rpath = xstrdup (optarg);
1113           else
1114             {
1115               size_t rpath_len = strlen (command_line.rpath);
1116               size_t optarg_len = strlen (optarg);
1117               char *buf;
1118               char *cp = command_line.rpath;
1119
1120               /* First see whether OPTARG is already in the path.  */
1121               do
1122                 {
1123                   if (strncmp (optarg, cp, optarg_len) == 0
1124                       && (cp[optarg_len] == 0
1125                           || cp[optarg_len] == config.rpath_separator))
1126                     /* We found it.  */
1127                     break;
1128
1129                   /* Not yet found.  */
1130                   cp = strchr (cp, config.rpath_separator);
1131                   if (cp != NULL)
1132                     ++cp;
1133                 }
1134               while (cp != NULL);
1135
1136               if (cp == NULL)
1137                 {
1138                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1139                   sprintf (buf, "%s%c%s", command_line.rpath,
1140                            config.rpath_separator, optarg);
1141                   free (command_line.rpath);
1142                   command_line.rpath = buf;
1143                 }
1144             }
1145           break;
1146         case OPTION_RPATH_LINK:
1147           if (command_line.rpath_link == NULL)
1148             command_line.rpath_link = xstrdup (optarg);
1149           else
1150             {
1151               char *buf;
1152
1153               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1154                                       + strlen (optarg)
1155                                       + 2);
1156               sprintf (buf, "%s%c%s", command_line.rpath_link,
1157                        config.rpath_separator, optarg);
1158               free (command_line.rpath_link);
1159               command_line.rpath_link = buf;
1160             }
1161           break;
1162         case OPTION_NO_RELAX:
1163           DISABLE_RELAXATION;
1164           break;
1165         case OPTION_RELAX:
1166           ENABLE_RELAXATION;
1167           break;
1168         case OPTION_RETAIN_SYMBOLS_FILE:
1169           add_keepsyms_file (optarg);
1170           break;
1171         case 'S':
1172           link_info.strip = strip_debugger;
1173           break;
1174         case 's':
1175           link_info.strip = strip_all;
1176           break;
1177         case OPTION_STRIP_DISCARDED:
1178           link_info.strip_discarded = TRUE;
1179           break;
1180         case OPTION_NO_STRIP_DISCARDED:
1181           link_info.strip_discarded = FALSE;
1182           break;
1183         case OPTION_SHARED:
1184           if (config.has_shared)
1185             {
1186               link_info.shared = TRUE;
1187               /* When creating a shared library, the default
1188                  behaviour is to ignore any unresolved references.  */
1189               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1190                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1191               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1192                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1193             }
1194           else
1195             einfo (_("%P%F: -shared not supported\n"));
1196           break;
1197         case OPTION_PIE:
1198           if (config.has_shared)
1199             {
1200               link_info.shared = TRUE;
1201               link_info.pie = TRUE;
1202             }
1203           else
1204             einfo (_("%P%F: -pie not supported\n"));
1205           break;
1206         case 'h':               /* Used on Solaris.  */
1207         case OPTION_SONAME:
1208           command_line.soname = optarg;
1209           break;
1210         case OPTION_SORT_COMMON:
1211           if (optarg == NULL
1212               || strcmp (optarg, N_("descending")) == 0)
1213             config.sort_common = sort_descending;
1214           else if (strcmp (optarg, N_("ascending")) == 0)
1215             config.sort_common = sort_ascending;
1216           else
1217             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1218                    optarg);
1219           break;
1220         case OPTION_SORT_SECTION:
1221           if (strcmp (optarg, N_("name")) == 0)
1222             sort_section = by_name;
1223           else if (strcmp (optarg, N_("alignment")) == 0)
1224             sort_section = by_alignment;
1225           else
1226             einfo (_("%P%F: invalid section sorting option: %s\n"),
1227                    optarg);
1228           break;
1229         case OPTION_STATS:
1230           config.stats = TRUE;
1231           break;
1232         case OPTION_SYMBOLIC:
1233           command_line.symbolic = symbolic;
1234           break;
1235         case OPTION_SYMBOLIC_FUNCTIONS:
1236           command_line.symbolic = symbolic_functions;
1237           break;
1238         case 't':
1239           trace_files = TRUE;
1240           break;
1241         case 'T':
1242           previous_script_handle = saved_script_handle;
1243           ldfile_open_command_file (optarg);
1244           parser_input = input_script;
1245           yyparse ();
1246           previous_script_handle = NULL;
1247           break;
1248         case OPTION_DEFAULT_SCRIPT:
1249           command_line.default_script = optarg;
1250           break;
1251         case OPTION_SECTION_START:
1252           {
1253             char *optarg2;
1254             char *sec_name;
1255             int len;
1256
1257             /* Check for <something>=<somthing>...  */
1258             optarg2 = strchr (optarg, '=');
1259             if (optarg2 == NULL)
1260               einfo (_("%P%F: invalid argument to option"
1261                        " \"--section-start\"\n"));
1262
1263             optarg2++;
1264
1265             /* So far so good.  Are all the args present?  */
1266             if ((*optarg == '\0') || (*optarg2 == '\0'))
1267               einfo (_("%P%F: missing argument(s) to option"
1268                        " \"--section-start\"\n"));
1269
1270             /* We must copy the section name as set_section_start
1271                doesn't do it for us.  */
1272             len = optarg2 - optarg;
1273             sec_name = (char *) xmalloc (len);
1274             memcpy (sec_name, optarg, len - 1);
1275             sec_name[len - 1] = 0;
1276
1277             /* Then set it...  */
1278             set_section_start (sec_name, optarg2);
1279           }
1280           break;
1281         case OPTION_TARGET_HELP:
1282           /* Mention any target specific options.  */
1283           ldemul_list_emulation_options (stdout);
1284           exit (0);
1285         case OPTION_TBSS:
1286           set_segment_start (".bss", optarg);
1287           break;
1288         case OPTION_TDATA:
1289           set_segment_start (".data", optarg);
1290           break;
1291         case OPTION_TTEXT:
1292           set_segment_start (".text", optarg);
1293           break;
1294         case OPTION_TTEXT_SEGMENT:
1295           set_segment_start (".text-segment", optarg);
1296           break;
1297         case OPTION_TRADITIONAL_FORMAT:
1298           link_info.traditional_format = TRUE;
1299           break;
1300         case OPTION_TASK_LINK:
1301           link_info.task_link = TRUE;
1302           /* Fall through - do an implied -r option.  */
1303         case OPTION_UR:
1304           link_info.relocatable = TRUE;
1305           config.build_constructors = TRUE;
1306           config.magic_demand_paged = FALSE;
1307           config.text_read_only = FALSE;
1308           config.dynamic_link = FALSE;
1309           break;
1310         case 'u':
1311           ldlang_add_undef (optarg, TRUE);
1312           break;
1313         case OPTION_UNIQUE:
1314           if (optarg != NULL)
1315             lang_add_unique (optarg);
1316           else
1317             config.unique_orphan_sections = TRUE;
1318           break;
1319         case OPTION_VERBOSE:
1320           ldversion (1);
1321           version_printed = TRUE;
1322           trace_file_tries = TRUE;
1323           overflow_cutoff_limit = -2;
1324           break;
1325         case 'v':
1326           ldversion (0);
1327           version_printed = TRUE;
1328           break;
1329         case 'V':
1330           ldversion (1);
1331           version_printed = TRUE;
1332           break;
1333         case OPTION_VERSION:
1334           ldversion (2);
1335           xexit (0);
1336           break;
1337         case OPTION_VERSION_SCRIPT:
1338           /* This option indicates a small script that only specifies
1339              version information.  Read it, but don't assume that
1340              we've seen a linker script.  */
1341           {
1342             FILE *hold_script_handle;
1343
1344             hold_script_handle = saved_script_handle;
1345             ldfile_open_command_file (optarg);
1346             saved_script_handle = hold_script_handle;
1347             parser_input = input_version_script;
1348             yyparse ();
1349           }
1350           break;
1351         case OPTION_VERSION_EXPORTS_SECTION:
1352           /* This option records a version symbol to be applied to the
1353              symbols listed for export to be found in the object files
1354              .exports sections.  */
1355           command_line.version_exports_section = optarg;
1356           break;
1357         case OPTION_DYNAMIC_LIST_DATA:
1358           command_line.dynamic_list = dynamic_list_data;
1359           if (command_line.symbolic == symbolic)
1360             command_line.symbolic = symbolic_unset;
1361           break;
1362         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1363           lang_append_dynamic_list_cpp_typeinfo ();
1364           if (command_line.dynamic_list != dynamic_list_data)
1365             command_line.dynamic_list = dynamic_list;
1366           if (command_line.symbolic == symbolic)
1367             command_line.symbolic = symbolic_unset;
1368           break;
1369         case OPTION_DYNAMIC_LIST_CPP_NEW:
1370           lang_append_dynamic_list_cpp_new ();
1371           if (command_line.dynamic_list != dynamic_list_data)
1372             command_line.dynamic_list = dynamic_list;
1373           if (command_line.symbolic == symbolic)
1374             command_line.symbolic = symbolic_unset;
1375           break;
1376         case OPTION_DYNAMIC_LIST:
1377           /* This option indicates a small script that only specifies
1378              a dynamic list.  Read it, but don't assume that we've
1379              seen a linker script.  */
1380           {
1381             FILE *hold_script_handle;
1382
1383             hold_script_handle = saved_script_handle;
1384             ldfile_open_command_file (optarg);
1385             saved_script_handle = hold_script_handle;
1386             parser_input = input_dynamic_list;
1387             yyparse ();
1388           }
1389           if (command_line.dynamic_list != dynamic_list_data)
1390             command_line.dynamic_list = dynamic_list;
1391           if (command_line.symbolic == symbolic)
1392             command_line.symbolic = symbolic_unset;
1393           break;
1394         case OPTION_WARN_COMMON:
1395           config.warn_common = TRUE;
1396           break;
1397         case OPTION_WARN_CONSTRUCTORS:
1398           config.warn_constructors = TRUE;
1399           break;
1400         case OPTION_WARN_FATAL:
1401           config.fatal_warnings = TRUE;
1402           break;
1403         case OPTION_NO_WARN_FATAL:
1404           config.fatal_warnings = FALSE;
1405           break;
1406         case OPTION_WARN_MULTIPLE_GP:
1407           config.warn_multiple_gp = TRUE;
1408           break;
1409         case OPTION_WARN_ONCE:
1410           config.warn_once = TRUE;
1411           break;
1412         case OPTION_WARN_SECTION_ALIGN:
1413           config.warn_section_align = TRUE;
1414           break;
1415         case OPTION_WARN_SHARED_TEXTREL:
1416           link_info.warn_shared_textrel = TRUE;
1417           break;
1418         case OPTION_WARN_ALTERNATE_EM:
1419           link_info.warn_alternate_em = TRUE;
1420           break;
1421         case OPTION_WHOLE_ARCHIVE:
1422           whole_archive = TRUE;
1423           break;
1424         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1425           add_DT_NEEDED_for_dynamic = TRUE;
1426           break;
1427         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1428           add_DT_NEEDED_for_dynamic = FALSE;
1429           break;
1430         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1431           add_DT_NEEDED_for_regular = TRUE;
1432           break;
1433         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1434           add_DT_NEEDED_for_regular = FALSE;
1435           break;
1436         case OPTION_WRAP:
1437           add_wrap (optarg);
1438           break;
1439         case OPTION_DISCARD_NONE:
1440           link_info.discard = discard_none;
1441           break;
1442         case 'X':
1443           link_info.discard = discard_l;
1444           break;
1445         case 'x':
1446           link_info.discard = discard_all;
1447           break;
1448         case 'Y':
1449           if (CONST_STRNEQ (optarg, "P,"))
1450             optarg += 2;
1451           if (default_dirlist != NULL)
1452             free (default_dirlist);
1453           default_dirlist = xstrdup (optarg);
1454           break;
1455         case 'y':
1456           add_ysym (optarg);
1457           break;
1458         case OPTION_SPARE_DYNAMIC_TAGS:
1459           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1460           break;
1461         case OPTION_SPLIT_BY_RELOC:
1462           if (optarg != NULL)
1463             config.split_by_reloc = strtoul (optarg, NULL, 0);
1464           else
1465             config.split_by_reloc = 32768;
1466           break;
1467         case OPTION_SPLIT_BY_FILE:
1468           if (optarg != NULL)
1469             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1470           else
1471             config.split_by_file = 1;
1472           break;
1473         case OPTION_CHECK_SECTIONS:
1474           command_line.check_section_addresses = 1;
1475           break;
1476         case OPTION_NO_CHECK_SECTIONS:
1477           command_line.check_section_addresses = 0;
1478           break;
1479         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1480           command_line.accept_unknown_input_arch = TRUE;
1481           break;
1482         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1483           command_line.accept_unknown_input_arch = FALSE;
1484           break;
1485         case '(':
1486           lang_enter_group ();
1487           ingroup++;
1488           break;
1489         case ')':
1490           if (! ingroup)
1491             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1492
1493           lang_leave_group ();
1494           ingroup--;
1495           break;
1496
1497         case OPTION_INIT:
1498           link_info.init_function = optarg;
1499           break;
1500
1501         case OPTION_FINI:
1502           link_info.fini_function = optarg;
1503           break;
1504
1505         case OPTION_REDUCE_MEMORY_OVERHEADS:
1506           link_info.reduce_memory_overheads = TRUE;
1507           if (config.hash_table_size == 0)
1508             config.hash_table_size = 1021;
1509           break;
1510
1511         case OPTION_HASH_SIZE:
1512           {
1513             bfd_size_type new_size;
1514
1515             new_size = strtoul (optarg, NULL, 0);
1516             if (new_size)
1517               config.hash_table_size = new_size;
1518             else
1519               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1520           }
1521           break;
1522         }
1523     }
1524
1525   while (ingroup)
1526     {
1527       lang_leave_group ();
1528       ingroup--;
1529     }
1530
1531   if (default_dirlist != NULL)
1532     {
1533       set_default_dirlist (default_dirlist);
1534       free (default_dirlist);
1535     }
1536
1537   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1538     /* FIXME: Should we allow emulations a chance to set this ?  */
1539     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1540
1541   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1542     /* FIXME: Should we allow emulations a chance to set this ?  */
1543     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1544
1545 #ifdef ENABLE_PLUGINS
1546   /* Now all the plugin arguments have been gathered, we can load them.  */
1547   if (plugin_load_plugins ())
1548     einfo (_("%P%F: %s: error loading plugin\n"), plugin_error_plugin ());
1549 #endif /* ENABLE_PLUGINS */
1550 }
1551
1552 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1553    library search path.  */
1554
1555 static void
1556 set_default_dirlist (char *dirlist_ptr)
1557 {
1558   char *p;
1559
1560   while (1)
1561     {
1562       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1563       if (p != NULL)
1564         *p = '\0';
1565       if (*dirlist_ptr != '\0')
1566         ldfile_add_library_path (dirlist_ptr, TRUE);
1567       if (p == NULL)
1568         break;
1569       dirlist_ptr = p + 1;
1570     }
1571 }
1572
1573 static void
1574 set_section_start (char *sect, char *valstr)
1575 {
1576   const char *end;
1577   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1578   if (*end)
1579     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1580   lang_section_start (sect, exp_intop (val), NULL);
1581 }
1582
1583 static void
1584 set_segment_start (const char *section, char *valstr)
1585 {
1586   const char *name;
1587   const char *end;
1588   segment_type *seg;
1589
1590   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1591   if (*end)
1592     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1593   /* If we already have an entry for this segment, update the existing
1594      value.  */
1595   name = section + 1;
1596   for (seg = segments; seg; seg = seg->next)
1597     if (strcmp (seg->name, name) == 0)
1598       {
1599         seg->value = val;
1600         return;
1601       }
1602   /* There was no existing value so we must create a new segment
1603      entry.  */
1604   seg = (segment_type *) stat_alloc (sizeof (*seg));
1605   seg->name = name;
1606   seg->value = val;
1607   seg->used = FALSE;
1608   /* Add it to the linked list of segments.  */
1609   seg->next = segments;
1610   segments = seg;
1611   /* Historically, -Ttext and friends set the base address of a
1612      particular section.  For backwards compatibility, we still do
1613      that.  If a SEGMENT_START directive is seen, the section address
1614      assignment will be disabled.  */
1615   lang_section_start (section, exp_intop (val), seg);
1616 }
1617
1618 \f
1619 /* Print help messages for the options.  */
1620
1621 static void
1622 help (void)
1623 {
1624   unsigned i;
1625   const char **targets, **pp;
1626   int len;
1627
1628   printf (_("Usage: %s [options] file...\n"), program_name);
1629
1630   printf (_("Options:\n"));
1631   for (i = 0; i < OPTION_COUNT; i++)
1632     {
1633       if (ld_options[i].doc != NULL)
1634         {
1635           bfd_boolean comma;
1636           unsigned j;
1637
1638           printf ("  ");
1639
1640           comma = FALSE;
1641           len = 2;
1642
1643           j = i;
1644           do
1645             {
1646               if (ld_options[j].shortopt != '\0'
1647                   && ld_options[j].control != NO_HELP)
1648                 {
1649                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1650                   len += (comma ? 2 : 0) + 2;
1651                   if (ld_options[j].arg != NULL)
1652                     {
1653                       if (ld_options[j].opt.has_arg != optional_argument)
1654                         {
1655                           printf (" ");
1656                           ++len;
1657                         }
1658                       printf ("%s", _(ld_options[j].arg));
1659                       len += strlen (_(ld_options[j].arg));
1660                     }
1661                   comma = TRUE;
1662                 }
1663               ++j;
1664             }
1665           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1666
1667           j = i;
1668           do
1669             {
1670               if (ld_options[j].opt.name != NULL
1671                   && ld_options[j].control != NO_HELP)
1672                 {
1673                   int two_dashes =
1674                     (ld_options[j].control == TWO_DASHES
1675                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1676
1677                   printf ("%s-%s%s",
1678                           comma ? ", " : "",
1679                           two_dashes ? "-" : "",
1680                           ld_options[j].opt.name);
1681                   len += ((comma ? 2 : 0)
1682                           + 1
1683                           + (two_dashes ? 1 : 0)
1684                           + strlen (ld_options[j].opt.name));
1685                   if (ld_options[j].arg != NULL)
1686                     {
1687                       printf (" %s", _(ld_options[j].arg));
1688                       len += 1 + strlen (_(ld_options[j].arg));
1689                     }
1690                   comma = TRUE;
1691                 }
1692               ++j;
1693             }
1694           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1695
1696           if (len >= 30)
1697             {
1698               printf ("\n");
1699               len = 0;
1700             }
1701
1702           for (; len < 30; len++)
1703             putchar (' ');
1704
1705           printf ("%s\n", _(ld_options[i].doc));
1706         }
1707     }
1708   printf (_("  @FILE"));
1709   for (len = strlen ("  @FILE"); len < 30; len++)
1710     putchar (' ');
1711   printf (_("Read options from FILE\n"));
1712
1713   /* Note: Various tools (such as libtool) depend upon the
1714      format of the listings below - do not change them.  */
1715   /* xgettext:c-format */
1716   printf (_("%s: supported targets:"), program_name);
1717   targets = bfd_target_list ();
1718   for (pp = targets; *pp != NULL; pp++)
1719     printf (" %s", *pp);
1720   free (targets);
1721   printf ("\n");
1722
1723   /* xgettext:c-format */
1724   printf (_("%s: supported emulations: "), program_name);
1725   ldemul_list_emulations (stdout);
1726   printf ("\n");
1727
1728   /* xgettext:c-format */
1729   printf (_("%s: emulation specific options:\n"), program_name);
1730   ldemul_list_emulation_options (stdout);
1731   printf ("\n");
1732
1733   if (REPORT_BUGS_TO[0])
1734     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1735 }