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   { {"flto", optional_argument, NULL, OPTION_IGNORE},
 287     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 288     ONE_DASH },
 289   { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
 290     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 291     ONE_DASH },
 292 #endif /* ENABLE_PLUGINS */
 293   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 294     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 295   { {"emit-relocs", no_argument, NULL, 'q'},
 296     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 297   { {"relocatable", no_argument, NULL, 'r'},
 298     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 299   { {NULL, no_argument, NULL, '\0'},
 300     'i', NULL, NULL, ONE_DASH },
 301   { {"just-symbols", required_argument, NULL, 'R'},
 302     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 303     TWO_DASHES },
 304   { {"strip-all", no_argument, NULL, 's'},
 305     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 306   { {"strip-debug", no_argument, NULL, 'S'},
 307     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 308   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 309     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 310   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 311     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 312   { {"trace", no_argument, NULL, 't'},
 313     't', NULL, N_("Trace file opens"), TWO_DASHES },
 314   { {"script", required_argument, NULL, 'T'},
 315     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 316   { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 317     '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
 318   { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 319     '\0', NULL, NULL, ONE_DASH },
 320   { {"undefined", required_argument, NULL, 'u'},
 321     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 322     TWO_DASHES },
 323   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 324     '\0', N_("[=SECTION]"),
 325     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 326   { {"Ur", no_argument, NULL, OPTION_UR},
 327     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 328   { {"version", no_argument, NULL, OPTION_VERSION},
 329     'v', NULL, N_("Print version information"), TWO_DASHES },
 330   { {NULL, no_argument, NULL, '\0'},
 331     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 332   { {"discard-all", no_argument, NULL, 'x'},
 333     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 334   { {"discard-locals", no_argument, NULL, 'X'},
 335     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 336   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 337     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 338   { {"trace-symbol", required_argument, NULL, 'y'},
 339     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 340   { {NULL, required_argument, NULL, '\0'},
 341     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 342     ONE_DASH },
 343   { {"start-group", no_argument, NULL, '('},
 344     '(', NULL, N_("Start a group"), TWO_DASHES },
 345   { {"end-group", no_argument, NULL, ')'},
 346     ')', NULL, N_("End a group"), TWO_DASHES },
 347   { {"accept-unknown-input-arch", no_argument, NULL,
 348      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 349     '\0', NULL,
 350     N_("Accept input files whose architecture cannot be determined"),
 351     TWO_DASHES },
 352   { {"no-accept-unknown-input-arch", no_argument, NULL,
 353      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 354     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 355     TWO_DASHES },
 356
 357   /* The next two options are deprecated because of their similarity to
 358      --as-needed and --no-as-needed.  They have been replaced by
 359      --copy-dt-needed-entries and --no-copy-dt-needed-entries.  */
 360   { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 361     '\0', NULL, NULL, NO_HELP },
 362   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 363     '\0', NULL, NULL, NO_HELP },
 364
 365   { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
 366     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 367     TWO_DASHES },
 368   { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
 369     '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
 370                    "                                the command line"),
 371     TWO_DASHES },
 372   { {"assert", required_argument, NULL, OPTION_ASSERT},
 373     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 374   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 375     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 376   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 377     '\0', NULL, NULL, ONE_DASH },
 378   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 379     '\0', NULL, NULL, ONE_DASH },
 380   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 381     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 382   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 383     '\0', NULL, NULL, ONE_DASH },
 384   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 385     '\0', NULL, NULL, ONE_DASH },
 386   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 387     '\0', NULL, NULL, ONE_DASH },
 388   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 389     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 390   { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
 391     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 392   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 393     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 394     TWO_DASHES },
 395   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 396     '\0', NULL, N_("Do not check section addresses for overlaps"),
 397     TWO_DASHES },
 398   { {"copy-dt-needed-entries", no_argument, NULL,
 399      OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 400     '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
 401     TWO_DASHES },
 402   { {"no-copy-dt-needed-entries", no_argument, NULL,
 403      OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 404     '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
 405     TWO_DASHES },
 406
 407   { {"cref", no_argument, NULL, OPTION_CREF},
 408     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 409   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 410     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 411   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 412     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 413     TWO_DASHES },
 414   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 415     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 416   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 417     '\0', NULL, N_("Treat warnings as errors"),
 418     TWO_DASHES },
 419   { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
 420     '\0', NULL, N_("Do not treat warnings as errors (default)"),
 421     TWO_DASHES },
 422   { {"fini", required_argument, NULL, OPTION_FINI},
 423     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 424   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 425     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 426   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 427     '\0', NULL, N_("Remove unused sections (on some targets)"),
 428     TWO_DASHES },
 429   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 430     '\0', NULL, N_("Don't remove unused sections (default)"),
 431     TWO_DASHES },
 432   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 433     '\0', NULL, N_("List removed unused sections on stderr"),
 434     TWO_DASHES },
 435   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 436     '\0', NULL, N_("Do not list removed unused sections"),
 437     TWO_DASHES },
 438   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 439     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 440     TWO_DASHES },
 441   { {"help", no_argument, NULL, OPTION_HELP},
 442     '\0', NULL, N_("Print option help"), TWO_DASHES },
 443   { {"init", required_argument, NULL, OPTION_INIT},
 444     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 445   { {"Map", required_argument, NULL, OPTION_MAP},
 446     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 447   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 448     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 449   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 450     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 451   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 452     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 453   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 454     '\0', NULL, N_("Do not allow unresolved references in object files"),
 455     TWO_DASHES },
 456   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 457     '\0', NULL, N_("Allow unresolved references in shared libaries"),
 458     TWO_DASHES },
 459   { {"no-allow-shlib-undefined", no_argument, NULL,
 460      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 461     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 462     TWO_DASHES },
 463   { {"allow-multiple-definition", no_argument, NULL,
 464      OPTION_ALLOW_MULTIPLE_DEFINITION},
 465     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 466   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 467     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 468   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 469     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 470   { {"default-imported-symver", no_argument, NULL,
 471       OPTION_DEFAULT_IMPORTED_SYMVER},
 472     '\0', NULL, N_("Create default symbol version for imported symbols"),
 473     TWO_DASHES },
 474   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 475     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 476   { {"no-warn-search-mismatch", no_argument, NULL,
 477      OPTION_NO_WARN_SEARCH_MISMATCH},
 478     '\0', NULL, N_("Don't warn on finding an incompatible library"),
 479     TWO_DASHES},
 480   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 481     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 482   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 483     '\0', NULL, N_("Create an output file even if errors occur"),
 484     TWO_DASHES },
 485   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 486     '\0', NULL, NULL, NO_HELP },
 487   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 488     '\0', NULL, N_("Only use library directories specified on\n"
 489                    "                                the command line"),
 490     ONE_DASH },
 491   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 492     '\0', N_("TARGET"), N_("Specify target of output file"),
 493     EXACTLY_TWO_DASHES },
 494   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 495     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 496   { {"reduce-memory-overheads", no_argument, NULL,
 497      OPTION_REDUCE_MEMORY_OVERHEADS},
 498     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 499     TWO_DASHES },
 500   { {"relax", no_argument, NULL, OPTION_RELAX},
 501     '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
 502   { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
 503     '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
 504   { {"retain-symbols-file", required_argument, NULL,
 505      OPTION_RETAIN_SYMBOLS_FILE},
 506     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 507   { {"rpath", required_argument, NULL, OPTION_RPATH},
 508     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 509   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 510     '\0', N_("PATH"), N_("Set link time shared library search path"),
 511     ONE_DASH },
 512   { {"shared", no_argument, NULL, OPTION_SHARED},
 513     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 514   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 515     '\0', NULL, NULL, ONE_DASH },
 516   { {"pie", no_argument, NULL, OPTION_PIE},
 517     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 518   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 519     '\0', NULL, NULL, TWO_DASHES },
 520   { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
 521     '\0', N_("[=ascending|descending]"),
 522     N_("Sort common symbols by alignment [in specified order]"),
 523     TWO_DASHES },
 524   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 525     '\0', NULL, NULL, NO_HELP },
 526   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 527     '\0', N_("name|alignment"),
 528     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 529   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 530     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 531     TWO_DASHES },
 532   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 533     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 534     TWO_DASHES },
 535   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 536     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 537     TWO_DASHES },
 538   { {"stats", no_argument, NULL, OPTION_STATS},
 539     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 540   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 541     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 542   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 543     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 544   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 545     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 546   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 547     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 548     TWO_DASHES },
 549   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 550     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 551   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 552     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 553   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 554     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 555   { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
 556     '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
 557   { {"unresolved-symbols=<method>", required_argument, NULL,
 558      OPTION_UNRESOLVED_SYMBOLS},
 559     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 560                    "                                ignore-all, report-all, ignore-in-object-files,\n"
 561                    "                                ignore-in-shared-libs"),
 562     TWO_DASHES },
 563   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 564     '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 565   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 566     '\0', NULL, NULL, NO_HELP },
 567   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 568     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 569   { {"version-exports-section", required_argument, NULL,
 570      OPTION_VERSION_EXPORTS_SECTION },
 571     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 572                            "                                SYMBOL as the version."),
 573     TWO_DASHES },
 574   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 575     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 576   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 577     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 578   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 579     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 580   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 581     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 582   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 583     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 584   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 585     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 586     TWO_DASHES },
 587   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 588     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 589   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 590     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 591   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 592     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 593     TWO_DASHES },
 594   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 595     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 596     TWO_DASHES },
 597   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 598     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 599     TWO_DASHES },
 600   { {"warn-unresolved-symbols", no_argument, NULL,
 601      OPTION_WARN_UNRESOLVED_SYMBOLS},
 602     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 603   { {"error-unresolved-symbols", no_argument, NULL,
 604      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 605     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 606   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 607     '\0', NULL, N_("Include all objects from following archives"),
 608     TWO_DASHES },
 609   { {"wrap", required_argument, NULL, OPTION_WRAP},
 610     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 611 };
 612
 613 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 614
 615 void
 616 parse_args (unsigned argc, char **argv)
 617 {
 618   unsigned i;
 619   int is, il, irl;
 620   int ingroup = 0;
 621   char *default_dirlist = NULL;
 622   char *shortopts;
 623   struct option *longopts;
 624   struct option *really_longopts;
 625   int last_optind;
 626   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 627
 628   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 629   longopts = (struct option *)
 630       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 631   really_longopts = (struct option *)
 632       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 633
 634   /* Starting the short option string with '-' is for programs that
 635      expect options and other ARGV-elements in any order and that care about
 636      the ordering of the two.  We describe each non-option ARGV-element
 637      as if it were the argument of an option with character code 1.  */
 638   shortopts[0] = '-';
 639   is = 1;
 640   il = 0;
 641   irl = 0;
 642   for (i = 0; i < OPTION_COUNT; i++)
 643     {
 644       if (ld_options[i].shortopt != '\0')
 645         {
 646           shortopts[is] = ld_options[i].shortopt;
 647           ++is;
 648           if (ld_options[i].opt.has_arg == required_argument
 649               || ld_options[i].opt.has_arg == optional_argument)
 650             {
 651               shortopts[is] = ':';
 652               ++is;
 653               if (ld_options[i].opt.has_arg == optional_argument)
 654                 {
 655                   shortopts[is] = ':';
 656                   ++is;
 657                 }
 658             }
 659         }
 660       if (ld_options[i].opt.name != NULL)
 661         {
 662           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 663             {
 664               really_longopts[irl] = ld_options[i].opt;
 665               ++irl;
 666             }
 667           else
 668             {
 669               longopts[il] = ld_options[i].opt;
 670               ++il;
 671             }
 672         }
 673     }
 674   shortopts[is] = '\0';
 675   longopts[il].name = NULL;
 676   really_longopts[irl].name = NULL;
 677
 678   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 679
 680   /* The -G option is ambiguous on different platforms.  Sometimes it
 681      specifies the largest data size to put into the small data
 682      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 683      the first form takes an argument, while the second does not.
 684
 685      We need to permit the --shared form because on some platforms,
 686      such as Solaris, gcc -shared will pass -G to the linker.
 687
 688      To permit either usage, we look through the argument list.  If we
 689      find -G not followed by a number, we change it into --shared.
 690      This will work for most normal cases.  */
 691   for (i = 1; i < argc; i++)
 692     if (strcmp (argv[i], "-G") == 0
 693         && (i + 1 >= argc
 694             || ! ISDIGIT (argv[i + 1][0])))
 695       argv[i] = (char *) "--shared";
 696
 697   /* Because we permit long options to start with a single dash, and
 698      we have a --library option, and the -l option is conventionally
 699      used with an immediately following argument, we can have bad
 700      results if somebody tries to use -l with a library whose name
 701      happens to start with "ibrary", as in -li.  We avoid problems by
 702      simply turning -l into --library.  This means that users will
 703      have to use two dashes in order to use --library, which is OK
 704      since that's how it is documented.
 705
 706      FIXME: It's possible that this problem can arise for other short
 707      options as well, although the user does always have the recourse
 708      of adding a space between the option and the argument.  */
 709   for (i = 1; i < argc; i++)
 710     {
 711       if (argv[i][0] == '-'
 712           && argv[i][1] == 'l'
 713           && argv[i][2] != '\0')
 714         {
 715           char *n;
 716
 717           n = (char *) xmalloc (strlen (argv[i]) + 20);
 718           sprintf (n, "--library=%s", argv[i] + 2);
 719           argv[i] = n;
 720         }
 721     }
 722
 723   last_optind = -1;
 724   while (1)
 725     {
 726       int longind;
 727       int optc;
 728
 729       /* Using last_optind lets us avoid calling ldemul_parse_args
 730          multiple times on a single option, which would lead to
 731          confusion in the internal static variables maintained by
 732          getopt.  This could otherwise happen for an argument like
 733          -nx, in which the -n is parsed as a single option, and we
 734          loop around to pick up the -x.  */
 735       if (optind != last_optind)
 736         if (ldemul_parse_args (argc, argv))
 737           continue;
 738
 739       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 740          can indicate a long option.  */
 741       opterr = 0;
 742       last_optind = optind;
 743       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 744       if (optc == '?')
 745         {
 746           optind = last_optind;
 747           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 748         }
 749
 750       if (ldemul_handle_option (optc))
 751         continue;
 752
 753       if (optc == -1)
 754         break;
 755
 756       switch (optc)
 757         {
 758         case '?':
 759           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 760           /* Fall through.  */
 761
 762         default:
 763           einfo (_("%P%F: use the --help option for usage information\n"));
 764
 765         case 1:                 /* File name.  */
 766           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 767           break;
 768
 769         case OPTION_IGNORE:
 770           break;
 771         case 'a':
 772           /* For HP/UX compatibility.  Actually -a shared should mean
 773              ``use only shared libraries'' but, then, we don't
 774              currently support shared libraries on HP/UX anyhow.  */
 775           if (strcmp (optarg, "archive") == 0)
 776             config.dynamic_link = FALSE;
 777           else if (strcmp (optarg, "shared") == 0
 778                    || strcmp (optarg, "default") == 0)
 779             config.dynamic_link = TRUE;
 780           else
 781             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 782           break;
 783         case OPTION_ASSERT:
 784           /* FIXME: We just ignore these, but we should handle them.  */
 785           if (strcmp (optarg, "definitions") == 0)
 786             ;
 787           else if (strcmp (optarg, "nodefinitions") == 0)
 788             ;
 789           else if (strcmp (optarg, "nosymbolic") == 0)
 790             ;
 791           else if (strcmp (optarg, "pure-text") == 0)
 792             ;
 793           else
 794             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 795           break;
 796         case 'A':
 797           ldfile_add_arch (optarg);
 798           break;
 799         case 'b':
 800           lang_add_target (optarg);
 801           break;
 802         case 'c':
 803           ldfile_open_command_file (optarg);
 804           parser_input = input_mri_script;
 805           yyparse ();
 806           break;
 807         case OPTION_CALL_SHARED:
 808           config.dynamic_link = TRUE;
 809           break;
 810         case OPTION_NON_SHARED:
 811           config.dynamic_link = FALSE;
 812           break;
 813         case OPTION_CREF:
 814           command_line.cref = TRUE;
 815           link_info.notice_all = TRUE;
 816           break;
 817         case 'd':
 818           command_line.force_common_definition = TRUE;
 819           break;
 820         case OPTION_DEFSYM:
 821           lex_string = optarg;
 822           lex_redirect (optarg);
 823           parser_input = input_defsym;
 824           parsing_defsym = 1;
 825           yyparse ();
 826           parsing_defsym = 0;
 827           lex_string = NULL;
 828           break;
 829         case OPTION_DEMANGLE:
 830           demangling = TRUE;
 831           if (optarg != NULL)
 832             {
 833               enum demangling_styles style;
 834
 835               style = cplus_demangle_name_to_style (optarg);
 836               if (style == unknown_demangling)
 837                 einfo (_("%F%P: unknown demangling style `%s'"),
 838                        optarg);
 839
 840               cplus_demangle_set_style (style);
 841             }
 842           break;
 843         case 'I':               /* Used on Solaris.  */
 844         case OPTION_DYNAMIC_LINKER:
 845           command_line.interpreter = optarg;
 846           break;
 847         case OPTION_SYSROOT:
 848           /* Already handled in ldmain.c.  */
 849           break;
 850         case OPTION_EB:
 851           command_line.endian = ENDIAN_BIG;
 852           break;
 853         case OPTION_EL:
 854           command_line.endian = ENDIAN_LITTLE;
 855           break;
 856         case OPTION_EMBEDDED_RELOCS:
 857           command_line.embedded_relocs = TRUE;
 858           break;
 859         case OPTION_EXPORT_DYNAMIC:
 860         case 'E': /* HP/UX compatibility.  */
 861           link_info.export_dynamic = TRUE;
 862           break;
 863         case OPTION_NO_EXPORT_DYNAMIC:
 864           link_info.export_dynamic = FALSE;
 865           break;
 866         case 'e':
 867           lang_add_entry (optarg, TRUE);
 868           break;
 869         case 'f':
 870           if (command_line.auxiliary_filters == NULL)
 871             {
 872               command_line.auxiliary_filters = (char **)
 873                   xmalloc (2 * sizeof (char *));
 874               command_line.auxiliary_filters[0] = optarg;
 875               command_line.auxiliary_filters[1] = NULL;
 876             }
 877           else
 878             {
 879               int c;
 880               char **p;
 881
 882               c = 0;
 883               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 884                 ++c;
 885               command_line.auxiliary_filters = (char **)
 886                   xrealloc (command_line.auxiliary_filters,
 887                             (c + 2) * sizeof (char *));
 888               command_line.auxiliary_filters[c] = optarg;
 889               command_line.auxiliary_filters[c + 1] = NULL;
 890             }
 891           break;
 892         case 'F':
 893           command_line.filter_shlib = optarg;
 894           break;
 895         case OPTION_FORCE_EXE_SUFFIX:
 896           command_line.force_exe_suffix = TRUE;
 897           break;
 898         case 'G':
 899           {
 900             char *end;
 901             g_switch_value = strtoul (optarg, &end, 0);
 902             if (*end)
 903               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 904           }
 905           break;
 906         case 'g':
 907           /* Ignore.  */
 908           break;
 909         case OPTION_GC_SECTIONS:
 910           link_info.gc_sections = TRUE;
 911           break;
 912         case OPTION_PRINT_GC_SECTIONS:
 913           link_info.print_gc_sections = TRUE;
 914           break;
 915         case OPTION_HELP:
 916           help ();
 917           xexit (0);
 918           break;
 919         case 'L':
 920           ldfile_add_library_path (optarg, TRUE);
 921           break;
 922         case 'l':
 923           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 924           break;
 925         case 'M':
 926           config.map_filename = "-";
 927           break;
 928         case 'm':
 929           /* Ignore.  Was handled in a pre-parse.   */
 930           break;
 931         case OPTION_MAP:
 932           config.map_filename = optarg;
 933           break;
 934         case 'N':
 935           config.text_read_only = FALSE;
 936           config.magic_demand_paged = FALSE;
 937           config.dynamic_link = FALSE;
 938           break;
 939         case OPTION_NO_OMAGIC:
 940           config.text_read_only = TRUE;
 941           config.magic_demand_paged = TRUE;
 942           /* NB/ Does not set dynamic_link to TRUE.
 943              Use --call-shared or -Bdynamic for this.  */
 944           break;
 945         case 'n':
 946           config.magic_demand_paged = FALSE;
 947           config.dynamic_link = FALSE;
 948           break;
 949         case OPTION_NO_DEFINE_COMMON:
 950           command_line.inhibit_common_definition = TRUE;
 951           break;
 952         case OPTION_NO_DEMANGLE:
 953           demangling = FALSE;
 954           break;
 955         case OPTION_NO_GC_SECTIONS:
 956           link_info.gc_sections = FALSE;
 957           break;
 958         case OPTION_NO_PRINT_GC_SECTIONS:
 959           link_info.print_gc_sections = FALSE;
 960           break;
 961         case OPTION_NO_KEEP_MEMORY:
 962           link_info.keep_memory = FALSE;
 963           break;
 964         case OPTION_NO_UNDEFINED:
 965           link_info.unresolved_syms_in_objects
 966             = how_to_report_unresolved_symbols;
 967           break;
 968         case OPTION_ALLOW_SHLIB_UNDEFINED:
 969           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 970           break;
 971         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 972           link_info.unresolved_syms_in_shared_libs
 973             = how_to_report_unresolved_symbols;
 974           break;
 975         case OPTION_UNRESOLVED_SYMBOLS:
 976           if (strcmp (optarg, "ignore-all") == 0)
 977             {
 978               link_info.unresolved_syms_in_objects = RM_IGNORE;
 979               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 980             }
 981           else if (strcmp (optarg, "report-all") == 0)
 982             {
 983               link_info.unresolved_syms_in_objects
 984                 = how_to_report_unresolved_symbols;
 985               link_info.unresolved_syms_in_shared_libs
 986                 = how_to_report_unresolved_symbols;
 987             }
 988           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 989             {
 990               link_info.unresolved_syms_in_objects = RM_IGNORE;
 991               link_info.unresolved_syms_in_shared_libs
 992                 = how_to_report_unresolved_symbols;
 993             }
 994           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 995             {
 996               link_info.unresolved_syms_in_objects
 997                 = how_to_report_unresolved_symbols;
 998               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 999             }
1000           else
1001             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
1002           break;
1003         case OPTION_WARN_UNRESOLVED_SYMBOLS:
1004           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
1005           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
1006             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
1007           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
1008             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
1009           break;
1010
1011         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
1012           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
1013           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
1014             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1015           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
1016             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
1017           break;
1018         case OPTION_ALLOW_MULTIPLE_DEFINITION:
1019           link_info.allow_multiple_definition = TRUE;
1020           break;
1021         case OPTION_NO_UNDEFINED_VERSION:
1022           link_info.allow_undefined_version = FALSE;
1023           break;
1024         case OPTION_DEFAULT_SYMVER:
1025           link_info.create_default_symver = TRUE;
1026           break;
1027         case OPTION_DEFAULT_IMPORTED_SYMVER:
1028           link_info.default_imported_symver = TRUE;
1029           break;
1030         case OPTION_NO_WARN_MISMATCH:
1031           command_line.warn_mismatch = FALSE;
1032           break;
1033         case OPTION_NO_WARN_SEARCH_MISMATCH:
1034           command_line.warn_search_mismatch = FALSE;
1035           break;
1036         case OPTION_NOINHIBIT_EXEC:
1037           force_make_executable = TRUE;
1038           break;
1039         case OPTION_NOSTDLIB:
1040           config.only_cmd_line_lib_dirs = TRUE;
1041           break;
1042         case OPTION_NO_WHOLE_ARCHIVE:
1043           whole_archive = FALSE;
1044           break;
1045         case 'O':
1046           /* FIXME "-O<non-digits> <value>" used to set the address of
1047              section <non-digits>.  Was this for compatibility with
1048              something, or can we create a new option to do that
1049              (with a syntax similar to -defsym)?
1050              getopt can't handle two args to an option without kludges.  */
1051
1052           /* Enable optimizations of output files.  */
1053           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1054           break;
1055         case 'o':
1056           lang_add_output (optarg, 0);
1057           break;
1058         case OPTION_OFORMAT:
1059           lang_add_output_format (optarg, NULL, NULL, 0);
1060           break;
1061 #ifdef ENABLE_PLUGINS
1062         case OPTION_PLUGIN:
1063           if (plugin_opt_plugin (optarg))
1064             einfo (_("%P%F: %s: error loading plugin\n"),
1065                    plugin_error_plugin ());
1066           break;
1067         case OPTION_PLUGIN_OPT:
1068           if (plugin_opt_plugin_arg (optarg))
1069             einfo(_("%P%F: bad -plugin-opt option\n"));
1070           break;
1071 #endif /* ENABLE_PLUGINS */
1072         case 'q':
1073           link_info.emitrelocations = TRUE;
1074           break;
1075         case 'i':
1076         case 'r':
1077           if (optind == last_optind)
1078             /* This can happen if the user put "-rpath,a" on the command
1079                line.  (Or something similar.  The comma is important).
1080                Getopt becomes confused and thinks that this is a -r option
1081                but it cannot parse the text after the -r so it refuses to
1082                increment the optind counter.  Detect this case and issue
1083                an error message here.  We cannot just make this a warning,
1084                increment optind, and continue because getopt is too confused
1085                and will seg-fault the next time around.  */
1086             einfo(_("%P%F: bad -rpath option\n"));
1087
1088           link_info.relocatable = TRUE;
1089           config.build_constructors = FALSE;
1090           config.magic_demand_paged = FALSE;
1091           config.text_read_only = FALSE;
1092           config.dynamic_link = FALSE;
1093           break;
1094         case 'R':
1095           /* The GNU linker traditionally uses -R to mean to include
1096              only the symbols from a file.  The Solaris linker uses -R
1097              to set the path used by the runtime linker to find
1098              libraries.  This is the GNU linker -rpath argument.  We
1099              try to support both simultaneously by checking the file
1100              named.  If it is a directory, rather than a regular file,
1101              we assume -rpath was meant.  */
1102           {
1103             struct stat s;
1104
1105             if (stat (optarg, &s) >= 0
1106                 && ! S_ISDIR (s.st_mode))
1107               {
1108                 lang_add_input_file (optarg,
1109                                      lang_input_file_is_symbols_only_enum,
1110                                      NULL);
1111                 break;
1112               }
1113           }
1114           /* Fall through.  */
1115         case OPTION_RPATH:
1116           if (command_line.rpath == NULL)
1117             command_line.rpath = xstrdup (optarg);
1118           else
1119             {
1120               size_t rpath_len = strlen (command_line.rpath);
1121               size_t optarg_len = strlen (optarg);
1122               char *buf;
1123               char *cp = command_line.rpath;
1124
1125               /* First see whether OPTARG is already in the path.  */
1126               do
1127                 {
1128                   if (strncmp (optarg, cp, optarg_len) == 0
1129                       && (cp[optarg_len] == 0
1130                           || cp[optarg_len] == config.rpath_separator))
1131                     /* We found it.  */
1132                     break;
1133
1134                   /* Not yet found.  */
1135                   cp = strchr (cp, config.rpath_separator);
1136                   if (cp != NULL)
1137                     ++cp;
1138                 }
1139               while (cp != NULL);
1140
1141               if (cp == NULL)
1142                 {
1143                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1144                   sprintf (buf, "%s%c%s", command_line.rpath,
1145                            config.rpath_separator, optarg);
1146                   free (command_line.rpath);
1147                   command_line.rpath = buf;
1148                 }
1149             }
1150           break;
1151         case OPTION_RPATH_LINK:
1152           if (command_line.rpath_link == NULL)
1153             command_line.rpath_link = xstrdup (optarg);
1154           else
1155             {
1156               char *buf;
1157
1158               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1159                                       + strlen (optarg)
1160                                       + 2);
1161               sprintf (buf, "%s%c%s", command_line.rpath_link,
1162                        config.rpath_separator, optarg);
1163               free (command_line.rpath_link);
1164               command_line.rpath_link = buf;
1165             }
1166           break;
1167         case OPTION_NO_RELAX:
1168           DISABLE_RELAXATION;
1169           break;
1170         case OPTION_RELAX:
1171           ENABLE_RELAXATION;
1172           break;
1173         case OPTION_RETAIN_SYMBOLS_FILE:
1174           add_keepsyms_file (optarg);
1175           break;
1176         case 'S':
1177           link_info.strip = strip_debugger;
1178           break;
1179         case 's':
1180           link_info.strip = strip_all;
1181           break;
1182         case OPTION_STRIP_DISCARDED:
1183           link_info.strip_discarded = TRUE;
1184           break;
1185         case OPTION_NO_STRIP_DISCARDED:
1186           link_info.strip_discarded = FALSE;
1187           break;
1188         case OPTION_SHARED:
1189           if (config.has_shared)
1190             {
1191               link_info.shared = TRUE;
1192               /* When creating a shared library, the default
1193                  behaviour is to ignore any unresolved references.  */
1194               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1195                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1196               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1197                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1198             }
1199           else
1200             einfo (_("%P%F: -shared not supported\n"));
1201           break;
1202         case OPTION_PIE:
1203           if (config.has_shared)
1204             {
1205               link_info.shared = TRUE;
1206               link_info.pie = TRUE;
1207             }
1208           else
1209             einfo (_("%P%F: -pie not supported\n"));
1210           break;
1211         case 'h':               /* Used on Solaris.  */
1212         case OPTION_SONAME:
1213           command_line.soname = optarg;
1214           break;
1215         case OPTION_SORT_COMMON:
1216           if (optarg == NULL
1217               || strcmp (optarg, N_("descending")) == 0)
1218             config.sort_common = sort_descending;
1219           else if (strcmp (optarg, N_("ascending")) == 0)
1220             config.sort_common = sort_ascending;
1221           else
1222             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1223                    optarg);
1224           break;
1225         case OPTION_SORT_SECTION:
1226           if (strcmp (optarg, N_("name")) == 0)
1227             sort_section = by_name;
1228           else if (strcmp (optarg, N_("alignment")) == 0)
1229             sort_section = by_alignment;
1230           else
1231             einfo (_("%P%F: invalid section sorting option: %s\n"),
1232                    optarg);
1233           break;
1234         case OPTION_STATS:
1235           config.stats = TRUE;
1236           break;
1237         case OPTION_SYMBOLIC:
1238           command_line.symbolic = symbolic;
1239           break;
1240         case OPTION_SYMBOLIC_FUNCTIONS:
1241           command_line.symbolic = symbolic_functions;
1242           break;
1243         case 't':
1244           trace_files = TRUE;
1245           break;
1246         case 'T':
1247           previous_script_handle = saved_script_handle;
1248           ldfile_open_command_file (optarg);
1249           parser_input = input_script;
1250           yyparse ();
1251           previous_script_handle = NULL;
1252           break;
1253         case OPTION_DEFAULT_SCRIPT:
1254           command_line.default_script = optarg;
1255           break;
1256         case OPTION_SECTION_START:
1257           {
1258             char *optarg2;
1259             char *sec_name;
1260             int len;
1261
1262             /* Check for <something>=<somthing>...  */
1263             optarg2 = strchr (optarg, '=');
1264             if (optarg2 == NULL)
1265               einfo (_("%P%F: invalid argument to option"
1266                        " \"--section-start\"\n"));
1267
1268             optarg2++;
1269
1270             /* So far so good.  Are all the args present?  */
1271             if ((*optarg == '\0') || (*optarg2 == '\0'))
1272               einfo (_("%P%F: missing argument(s) to option"
1273                        " \"--section-start\"\n"));
1274
1275             /* We must copy the section name as set_section_start
1276                doesn't do it for us.  */
1277             len = optarg2 - optarg;
1278             sec_name = (char *) xmalloc (len);
1279             memcpy (sec_name, optarg, len - 1);
1280             sec_name[len - 1] = 0;
1281
1282             /* Then set it...  */
1283             set_section_start (sec_name, optarg2);
1284           }
1285           break;
1286         case OPTION_TARGET_HELP:
1287           /* Mention any target specific options.  */
1288           ldemul_list_emulation_options (stdout);
1289           exit (0);
1290         case OPTION_TBSS:
1291           set_segment_start (".bss", optarg);
1292           break;
1293         case OPTION_TDATA:
1294           set_segment_start (".data", optarg);
1295           break;
1296         case OPTION_TTEXT:
1297           set_segment_start (".text", optarg);
1298           break;
1299         case OPTION_TTEXT_SEGMENT:
1300           set_segment_start (".text-segment", optarg);
1301           break;
1302         case OPTION_TRADITIONAL_FORMAT:
1303           link_info.traditional_format = TRUE;
1304           break;
1305         case OPTION_TASK_LINK:
1306           link_info.task_link = TRUE;
1307           /* Fall through - do an implied -r option.  */
1308         case OPTION_UR:
1309           link_info.relocatable = TRUE;
1310           config.build_constructors = TRUE;
1311           config.magic_demand_paged = FALSE;
1312           config.text_read_only = FALSE;
1313           config.dynamic_link = FALSE;
1314           break;
1315         case 'u':
1316           ldlang_add_undef (optarg, TRUE);
1317           break;
1318         case OPTION_UNIQUE:
1319           if (optarg != NULL)
1320             lang_add_unique (optarg);
1321           else
1322             config.unique_orphan_sections = TRUE;
1323           break;
1324         case OPTION_VERBOSE:
1325           ldversion (1);
1326           version_printed = TRUE;
1327           trace_file_tries = TRUE;
1328           overflow_cutoff_limit = -2;
1329           break;
1330         case 'v':
1331           ldversion (0);
1332           version_printed = TRUE;
1333           break;
1334         case 'V':
1335           ldversion (1);
1336           version_printed = TRUE;
1337           break;
1338         case OPTION_VERSION:
1339           ldversion (2);
1340           xexit (0);
1341           break;
1342         case OPTION_VERSION_SCRIPT:
1343           /* This option indicates a small script that only specifies
1344              version information.  Read it, but don't assume that
1345              we've seen a linker script.  */
1346           {
1347             FILE *hold_script_handle;
1348
1349             hold_script_handle = saved_script_handle;
1350             ldfile_open_command_file (optarg);
1351             saved_script_handle = hold_script_handle;
1352             parser_input = input_version_script;
1353             yyparse ();
1354           }
1355           break;
1356         case OPTION_VERSION_EXPORTS_SECTION:
1357           /* This option records a version symbol to be applied to the
1358              symbols listed for export to be found in the object files
1359              .exports sections.  */
1360           command_line.version_exports_section = optarg;
1361           break;
1362         case OPTION_DYNAMIC_LIST_DATA:
1363           command_line.dynamic_list = dynamic_list_data;
1364           if (command_line.symbolic == symbolic)
1365             command_line.symbolic = symbolic_unset;
1366           break;
1367         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1368           lang_append_dynamic_list_cpp_typeinfo ();
1369           if (command_line.dynamic_list != dynamic_list_data)
1370             command_line.dynamic_list = dynamic_list;
1371           if (command_line.symbolic == symbolic)
1372             command_line.symbolic = symbolic_unset;
1373           break;
1374         case OPTION_DYNAMIC_LIST_CPP_NEW:
1375           lang_append_dynamic_list_cpp_new ();
1376           if (command_line.dynamic_list != dynamic_list_data)
1377             command_line.dynamic_list = dynamic_list;
1378           if (command_line.symbolic == symbolic)
1379             command_line.symbolic = symbolic_unset;
1380           break;
1381         case OPTION_DYNAMIC_LIST:
1382           /* This option indicates a small script that only specifies
1383              a dynamic list.  Read it, but don't assume that we've
1384              seen a linker script.  */
1385           {
1386             FILE *hold_script_handle;
1387
1388             hold_script_handle = saved_script_handle;
1389             ldfile_open_command_file (optarg);
1390             saved_script_handle = hold_script_handle;
1391             parser_input = input_dynamic_list;
1392             yyparse ();
1393           }
1394           if (command_line.dynamic_list != dynamic_list_data)
1395             command_line.dynamic_list = dynamic_list;
1396           if (command_line.symbolic == symbolic)
1397             command_line.symbolic = symbolic_unset;
1398           break;
1399         case OPTION_WARN_COMMON:
1400           config.warn_common = TRUE;
1401           break;
1402         case OPTION_WARN_CONSTRUCTORS:
1403           config.warn_constructors = TRUE;
1404           break;
1405         case OPTION_WARN_FATAL:
1406           config.fatal_warnings = TRUE;
1407           break;
1408         case OPTION_NO_WARN_FATAL:
1409           config.fatal_warnings = FALSE;
1410           break;
1411         case OPTION_WARN_MULTIPLE_GP:
1412           config.warn_multiple_gp = TRUE;
1413           break;
1414         case OPTION_WARN_ONCE:
1415           config.warn_once = TRUE;
1416           break;
1417         case OPTION_WARN_SECTION_ALIGN:
1418           config.warn_section_align = TRUE;
1419           break;
1420         case OPTION_WARN_SHARED_TEXTREL:
1421           link_info.warn_shared_textrel = TRUE;
1422           break;
1423         case OPTION_WARN_ALTERNATE_EM:
1424           link_info.warn_alternate_em = TRUE;
1425           break;
1426         case OPTION_WHOLE_ARCHIVE:
1427           whole_archive = TRUE;
1428           break;
1429         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1430           add_DT_NEEDED_for_dynamic = TRUE;
1431           break;
1432         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1433           add_DT_NEEDED_for_dynamic = FALSE;
1434           break;
1435         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1436           add_DT_NEEDED_for_regular = TRUE;
1437           break;
1438         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1439           add_DT_NEEDED_for_regular = FALSE;
1440           break;
1441         case OPTION_WRAP:
1442           add_wrap (optarg);
1443           break;
1444         case OPTION_DISCARD_NONE:
1445           link_info.discard = discard_none;
1446           break;
1447         case 'X':
1448           link_info.discard = discard_l;
1449           break;
1450         case 'x':
1451           link_info.discard = discard_all;
1452           break;
1453         case 'Y':
1454           if (CONST_STRNEQ (optarg, "P,"))
1455             optarg += 2;
1456           if (default_dirlist != NULL)
1457             free (default_dirlist);
1458           default_dirlist = xstrdup (optarg);
1459           break;
1460         case 'y':
1461           add_ysym (optarg);
1462           break;
1463         case OPTION_SPARE_DYNAMIC_TAGS:
1464           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1465           break;
1466         case OPTION_SPLIT_BY_RELOC:
1467           if (optarg != NULL)
1468             config.split_by_reloc = strtoul (optarg, NULL, 0);
1469           else
1470             config.split_by_reloc = 32768;
1471           break;
1472         case OPTION_SPLIT_BY_FILE:
1473           if (optarg != NULL)
1474             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1475           else
1476             config.split_by_file = 1;
1477           break;
1478         case OPTION_CHECK_SECTIONS:
1479           command_line.check_section_addresses = 1;
1480           break;
1481         case OPTION_NO_CHECK_SECTIONS:
1482           command_line.check_section_addresses = 0;
1483           break;
1484         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1485           command_line.accept_unknown_input_arch = TRUE;
1486           break;
1487         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1488           command_line.accept_unknown_input_arch = FALSE;
1489           break;
1490         case '(':
1491           lang_enter_group ();
1492           ingroup++;
1493           break;
1494         case ')':
1495           if (! ingroup)
1496             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1497
1498           lang_leave_group ();
1499           ingroup--;
1500           break;
1501
1502         case OPTION_INIT:
1503           link_info.init_function = optarg;
1504           break;
1505
1506         case OPTION_FINI:
1507           link_info.fini_function = optarg;
1508           break;
1509
1510         case OPTION_REDUCE_MEMORY_OVERHEADS:
1511           link_info.reduce_memory_overheads = TRUE;
1512           if (config.hash_table_size == 0)
1513             config.hash_table_size = 1021;
1514           break;
1515
1516         case OPTION_HASH_SIZE:
1517           {
1518             bfd_size_type new_size;
1519
1520             new_size = strtoul (optarg, NULL, 0);
1521             if (new_size)
1522               config.hash_table_size = new_size;
1523             else
1524               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1525           }
1526           break;
1527         }
1528     }
1529
1530   while (ingroup)
1531     {
1532       lang_leave_group ();
1533       ingroup--;
1534     }
1535
1536   if (default_dirlist != NULL)
1537     {
1538       set_default_dirlist (default_dirlist);
1539       free (default_dirlist);
1540     }
1541
1542   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1543     /* FIXME: Should we allow emulations a chance to set this ?  */
1544     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1545
1546   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1547     /* FIXME: Should we allow emulations a chance to set this ?  */
1548     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1549
1550 #ifdef ENABLE_PLUGINS
1551   /* Now all the plugin arguments have been gathered, we can load them.  */
1552   if (plugin_load_plugins ())
1553     einfo (_("%P%F: %s: error loading plugin\n"), plugin_error_plugin ());
1554 #endif /* ENABLE_PLUGINS */
1555 }
1556
1557 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1558    library search path.  */
1559
1560 static void
1561 set_default_dirlist (char *dirlist_ptr)
1562 {
1563   char *p;
1564
1565   while (1)
1566     {
1567       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1568       if (p != NULL)
1569         *p = '\0';
1570       if (*dirlist_ptr != '\0')
1571         ldfile_add_library_path (dirlist_ptr, TRUE);
1572       if (p == NULL)
1573         break;
1574       dirlist_ptr = p + 1;
1575     }
1576 }
1577
1578 static void
1579 set_section_start (char *sect, char *valstr)
1580 {
1581   const char *end;
1582   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1583   if (*end)
1584     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1585   lang_section_start (sect, exp_intop (val), NULL);
1586 }
1587
1588 static void
1589 set_segment_start (const char *section, char *valstr)
1590 {
1591   const char *name;
1592   const char *end;
1593   segment_type *seg;
1594
1595   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1596   if (*end)
1597     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1598   /* If we already have an entry for this segment, update the existing
1599      value.  */
1600   name = section + 1;
1601   for (seg = segments; seg; seg = seg->next)
1602     if (strcmp (seg->name, name) == 0)
1603       {
1604         seg->value = val;
1605         return;
1606       }
1607   /* There was no existing value so we must create a new segment
1608      entry.  */
1609   seg = (segment_type *) stat_alloc (sizeof (*seg));
1610   seg->name = name;
1611   seg->value = val;
1612   seg->used = FALSE;
1613   /* Add it to the linked list of segments.  */
1614   seg->next = segments;
1615   segments = seg;
1616   /* Historically, -Ttext and friends set the base address of a
1617      particular section.  For backwards compatibility, we still do
1618      that.  If a SEGMENT_START directive is seen, the section address
1619      assignment will be disabled.  */
1620   lang_section_start (section, exp_intop (val), seg);
1621 }
1622
1623 \f
1624 /* Print help messages for the options.  */
1625
1626 static void
1627 help (void)
1628 {
1629   unsigned i;
1630   const char **targets, **pp;
1631   int len;
1632
1633   printf (_("Usage: %s [options] file...\n"), program_name);
1634
1635   printf (_("Options:\n"));
1636   for (i = 0; i < OPTION_COUNT; i++)
1637     {
1638       if (ld_options[i].doc != NULL)
1639         {
1640           bfd_boolean comma;
1641           unsigned j;
1642
1643           printf ("  ");
1644
1645           comma = FALSE;
1646           len = 2;
1647
1648           j = i;
1649           do
1650             {
1651               if (ld_options[j].shortopt != '\0'
1652                   && ld_options[j].control != NO_HELP)
1653                 {
1654                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1655                   len += (comma ? 2 : 0) + 2;
1656                   if (ld_options[j].arg != NULL)
1657                     {
1658                       if (ld_options[j].opt.has_arg != optional_argument)
1659                         {
1660                           printf (" ");
1661                           ++len;
1662                         }
1663                       printf ("%s", _(ld_options[j].arg));
1664                       len += strlen (_(ld_options[j].arg));
1665                     }
1666                   comma = TRUE;
1667                 }
1668               ++j;
1669             }
1670           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1671
1672           j = i;
1673           do
1674             {
1675               if (ld_options[j].opt.name != NULL
1676                   && ld_options[j].control != NO_HELP)
1677                 {
1678                   int two_dashes =
1679                     (ld_options[j].control == TWO_DASHES
1680                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1681
1682                   printf ("%s-%s%s",
1683                           comma ? ", " : "",
1684                           two_dashes ? "-" : "",
1685                           ld_options[j].opt.name);
1686                   len += ((comma ? 2 : 0)
1687                           + 1
1688                           + (two_dashes ? 1 : 0)
1689                           + strlen (ld_options[j].opt.name));
1690                   if (ld_options[j].arg != NULL)
1691                     {
1692                       printf (" %s", _(ld_options[j].arg));
1693                       len += 1 + strlen (_(ld_options[j].arg));
1694                     }
1695                   comma = TRUE;
1696                 }
1697               ++j;
1698             }
1699           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1700
1701           if (len >= 30)
1702             {
1703               printf ("\n");
1704               len = 0;
1705             }
1706
1707           for (; len < 30; len++)
1708             putchar (' ');
1709
1710           printf ("%s\n", _(ld_options[i].doc));
1711         }
1712     }
1713   printf (_("  @FILE"));
1714   for (len = strlen ("  @FILE"); len < 30; len++)
1715     putchar (' ');
1716   printf (_("Read options from FILE\n"));
1717
1718   /* Note: Various tools (such as libtool) depend upon the
1719      format of the listings below - do not change them.  */
1720   /* xgettext:c-format */
1721   printf (_("%s: supported targets:"), program_name);
1722   targets = bfd_target_list ();
1723   for (pp = targets; *pp != NULL; pp++)
1724     printf (" %s", *pp);
1725   free (targets);
1726   printf ("\n");
1727
1728   /* xgettext:c-format */
1729   printf (_("%s: supported emulations: "), program_name);
1730   ldemul_list_emulations (stdout);
1731   printf ("\n");
1732
1733   /* xgettext:c-format */
1734   printf (_("%s: emulation specific options:\n"), program_name);
1735   ldemul_list_emulation_options (stdout);
1736   printf ("\n");
1737
1738   if (REPORT_BUGS_TO[0])
1739     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1740 }