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, 2011, 2012
   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 /* Codes used for the long options with no short synonyms.  150 isn't
  66    special; it's just an arbitrary non-ASCII char value.  */
  67 enum option_values
  68 {
  69   OPTION_ASSERT = 150,
  70   OPTION_CALL_SHARED,
  71   OPTION_CREF,
  72   OPTION_DEFSYM,
  73   OPTION_DEMANGLE,
  74   OPTION_DYNAMIC_LINKER,
  75   OPTION_SYSROOT,
  76   OPTION_EB,
  77   OPTION_EL,
  78   OPTION_EMBEDDED_RELOCS,
  79   OPTION_EXPORT_DYNAMIC,
  80   OPTION_NO_EXPORT_DYNAMIC,
  81   OPTION_HELP,
  82   OPTION_IGNORE,
  83   OPTION_MAP,
  84   OPTION_NO_DEMANGLE,
  85   OPTION_NO_KEEP_MEMORY,
  86   OPTION_NO_WARN_MISMATCH,
  87   OPTION_NO_WARN_SEARCH_MISMATCH,
  88   OPTION_NOINHIBIT_EXEC,
  89   OPTION_NON_SHARED,
  90   OPTION_NO_WHOLE_ARCHIVE,
  91   OPTION_OFORMAT,
  92   OPTION_RELAX,
  93   OPTION_NO_RELAX,
  94   OPTION_RETAIN_SYMBOLS_FILE,
  95   OPTION_RPATH,
  96   OPTION_RPATH_LINK,
  97   OPTION_SHARED,
  98   OPTION_SONAME,
  99   OPTION_SORT_COMMON,
 100   OPTION_SORT_SECTION,
 101   OPTION_STATS,
 102   OPTION_SYMBOLIC,
 103   OPTION_SYMBOLIC_FUNCTIONS,
 104   OPTION_TASK_LINK,
 105   OPTION_TBSS,
 106   OPTION_TDATA,
 107   OPTION_TTEXT,
 108   OPTION_TTEXT_SEGMENT,
 109   OPTION_TRADITIONAL_FORMAT,
 110   OPTION_UR,
 111   OPTION_VERBOSE,
 112   OPTION_VERSION,
 113   OPTION_VERSION_SCRIPT,
 114   OPTION_VERSION_EXPORTS_SECTION,
 115   OPTION_DYNAMIC_LIST,
 116   OPTION_DYNAMIC_LIST_CPP_NEW,
 117   OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
 118   OPTION_DYNAMIC_LIST_DATA,
 119   OPTION_WARN_COMMON,
 120   OPTION_WARN_CONSTRUCTORS,
 121   OPTION_WARN_FATAL,
 122   OPTION_NO_WARN_FATAL,
 123   OPTION_WARN_MULTIPLE_GP,
 124   OPTION_WARN_ONCE,
 125   OPTION_WARN_SECTION_ALIGN,
 126   OPTION_SPLIT_BY_RELOC,
 127   OPTION_SPLIT_BY_FILE ,
 128   OPTION_WHOLE_ARCHIVE,
 129   OPTION_ADD_DT_NEEDED_FOR_DYNAMIC,
 130   OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC,
 131   OPTION_ADD_DT_NEEDED_FOR_REGULAR,
 132   OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR,
 133   OPTION_WRAP,
 134   OPTION_FORCE_EXE_SUFFIX,
 135   OPTION_GC_SECTIONS,
 136   OPTION_NO_GC_SECTIONS,
 137   OPTION_PRINT_GC_SECTIONS,
 138   OPTION_NO_PRINT_GC_SECTIONS,
 139   OPTION_HASH_SIZE,
 140   OPTION_CHECK_SECTIONS,
 141   OPTION_NO_CHECK_SECTIONS,
 142   OPTION_NO_UNDEFINED,
 143   OPTION_INIT,
 144   OPTION_FINI,
 145   OPTION_SECTION_START,
 146   OPTION_UNIQUE,
 147   OPTION_TARGET_HELP,
 148   OPTION_ALLOW_SHLIB_UNDEFINED,
 149   OPTION_NO_ALLOW_SHLIB_UNDEFINED,
 150   OPTION_ALLOW_MULTIPLE_DEFINITION,
 151   OPTION_NO_UNDEFINED_VERSION,
 152   OPTION_DEFAULT_SYMVER,
 153   OPTION_DEFAULT_IMPORTED_SYMVER,
 154   OPTION_DISCARD_NONE,
 155   OPTION_SPARE_DYNAMIC_TAGS,
 156   OPTION_NO_DEFINE_COMMON,
 157   OPTION_NOSTDLIB,
 158   OPTION_NO_OMAGIC,
 159   OPTION_STRIP_DISCARDED,
 160   OPTION_NO_STRIP_DISCARDED,
 161   OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
 162   OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
 163   OPTION_PIE,
 164   OPTION_UNRESOLVED_SYMBOLS,
 165   OPTION_WARN_UNRESOLVED_SYMBOLS,
 166   OPTION_ERROR_UNRESOLVED_SYMBOLS,
 167   OPTION_WARN_SHARED_TEXTREL,
 168   OPTION_WARN_ALTERNATE_EM,
 169   OPTION_REDUCE_MEMORY_OVERHEADS,
 170 #ifdef ENABLE_PLUGINS
 171   OPTION_PLUGIN,
 172   OPTION_PLUGIN_OPT,
 173 #endif /* ENABLE_PLUGINS */
 174   OPTION_DEFAULT_SCRIPT,
 175   OPTION_PRINT_OUTPUT_FORMAT,
 176 };
 177
 178 /* The long options.  This structure is used for both the option
 179    parsing and the help text.  */
 180
 181 enum control_enum {
 182   /* Use one dash before long option name.  */
 183   ONE_DASH,
 184   /* Use two dashes before long option name.  */
 185   TWO_DASHES,
 186   /* Only accept two dashes before the long option name.
 187      This is an overloading of the use of this enum, since originally it
 188      was only intended to tell the --help display function how to display
 189      the long option name.  This feature was added in order to resolve
 190      the confusion about the -omagic command line switch.  Is it setting
 191      the output file name to "magic" or is it setting the NMAGIC flag on
 192      the output ?  It has been decided that it is setting the output file
 193      name, and that if you want to set the NMAGIC flag you should use -N
 194      or --omagic.  */
 195   EXACTLY_TWO_DASHES,
 196   /* Don't mention this option in --help output.  */
 197   NO_HELP
 198 };
 199
 200 struct ld_option
 201 {
 202   /* The long option information.  */
 203   struct option opt;
 204   /* The short option with the same meaning ('\0' if none).  */
 205   char shortopt;
 206   /* The name of the argument (NULL if none).  */
 207   const char *arg;
 208   /* The documentation string.  If this is NULL, this is a synonym for
 209      the previous option.  */
 210   const char *doc;
 211   enum control_enum control;
 212 };
 213
 214 static const struct ld_option ld_options[] =
 215 {
 216   { {NULL, required_argument, NULL, '\0'},
 217     'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 218     ONE_DASH },
 219   { {"architecture", required_argument, NULL, 'A'},
 220     'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 221   { {"format", required_argument, NULL, 'b'},
 222     'b', N_("TARGET"), N_("Specify target for following input files"),
 223     TWO_DASHES },
 224   { {"mri-script", required_argument, NULL, 'c'},
 225     'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 226   { {"dc", no_argument, NULL, 'd'},
 227     'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 228   { {"dp", no_argument, NULL, 'd'},
 229     '\0', NULL, NULL, ONE_DASH },
 230   { {"entry", required_argument, NULL, 'e'},
 231     'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 232   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 233     'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 234   { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
 235     '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
 236   { {"EB", no_argument, NULL, OPTION_EB},
 237     '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 238   { {"EL", no_argument, NULL, OPTION_EL},
 239     '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 240   { {"auxiliary", required_argument, NULL, 'f'},
 241     'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 242     TWO_DASHES },
 243   { {"filter", required_argument, NULL, 'F'},
 244     'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
 245     TWO_DASHES },
 246   { {NULL, no_argument, NULL, '\0'},
 247     'g', NULL, N_("Ignored"), ONE_DASH },
 248   { {"gpsize", required_argument, NULL, 'G'},
 249     'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 250     TWO_DASHES },
 251   { {"soname", required_argument, NULL, OPTION_SONAME},
 252     'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 253   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 254     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
 255     TWO_DASHES },
 256   { {"library", required_argument, NULL, 'l'},
 257     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 258   { {"library-path", required_argument, NULL, 'L'},
 259     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 260     TWO_DASHES },
 261   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 262     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 263   { {NULL, required_argument, NULL, '\0'},
 264     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 265   { {"print-map", no_argument, NULL, 'M'},
 266     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 267   { {"nmagic", no_argument, NULL, 'n'},
 268     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 269   { {"omagic", no_argument, NULL, 'N'},
 270     'N', NULL, N_("Do not page align data, do not make text readonly"),
 271     EXACTLY_TWO_DASHES },
 272   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 273     '\0', NULL, N_("Page align data, make text readonly"),
 274     EXACTLY_TWO_DASHES },
 275   { {"output", required_argument, NULL, 'o'},
 276     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 277   { {NULL, required_argument, NULL, '\0'},
 278     'O', NULL, N_("Optimize output file"), ONE_DASH },
 279 #ifdef ENABLE_PLUGINS
 280   { {"plugin", required_argument, NULL, OPTION_PLUGIN},
 281     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
 282   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
 283     '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
 284   { {"flto", optional_argument, NULL, OPTION_IGNORE},
 285     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 286     ONE_DASH },
 287   { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
 288     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 289     ONE_DASH },
 290 #endif /* ENABLE_PLUGINS */
 291   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 292     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 293   { {"emit-relocs", no_argument, NULL, 'q'},
 294     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 295   { {"relocatable", no_argument, NULL, 'r'},
 296     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 297   { {NULL, no_argument, NULL, '\0'},
 298     'i', NULL, NULL, ONE_DASH },
 299   { {"just-symbols", required_argument, NULL, 'R'},
 300     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 301     TWO_DASHES },
 302   { {"strip-all", no_argument, NULL, 's'},
 303     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 304   { {"strip-debug", no_argument, NULL, 'S'},
 305     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 306   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 307     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 308   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 309     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 310   { {"trace", no_argument, NULL, 't'},
 311     't', NULL, N_("Trace file opens"), TWO_DASHES },
 312   { {"script", required_argument, NULL, 'T'},
 313     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 314   { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 315     '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
 316   { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 317     '\0', NULL, NULL, ONE_DASH },
 318   { {"undefined", required_argument, NULL, 'u'},
 319     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 320     TWO_DASHES },
 321   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 322     '\0', N_("[=SECTION]"),
 323     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 324   { {"Ur", no_argument, NULL, OPTION_UR},
 325     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 326   { {"version", no_argument, NULL, OPTION_VERSION},
 327     'v', NULL, N_("Print version information"), TWO_DASHES },
 328   { {NULL, no_argument, NULL, '\0'},
 329     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 330   { {"discard-all", no_argument, NULL, 'x'},
 331     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 332   { {"discard-locals", no_argument, NULL, 'X'},
 333     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 334   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 335     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 336   { {"trace-symbol", required_argument, NULL, 'y'},
 337     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 338   { {NULL, required_argument, NULL, '\0'},
 339     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 340     ONE_DASH },
 341   { {"start-group", no_argument, NULL, '('},
 342     '(', NULL, N_("Start a group"), TWO_DASHES },
 343   { {"end-group", no_argument, NULL, ')'},
 344     ')', NULL, N_("End a group"), TWO_DASHES },
 345   { {"accept-unknown-input-arch", no_argument, NULL,
 346      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 347     '\0', NULL,
 348     N_("Accept input files whose architecture cannot be determined"),
 349     TWO_DASHES },
 350   { {"no-accept-unknown-input-arch", no_argument, NULL,
 351      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 352     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 353     TWO_DASHES },
 354
 355   /* The next two options are deprecated because of their similarity to
 356      --as-needed and --no-as-needed.  They have been replaced by
 357      --copy-dt-needed-entries and --no-copy-dt-needed-entries.  */
 358   { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 359     '\0', NULL, NULL, NO_HELP },
 360   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 361     '\0', NULL, NULL, NO_HELP },
 362
 363   { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
 364     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 365     TWO_DASHES },
 366   { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
 367     '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
 368                    "                                the command line"),
 369     TWO_DASHES },
 370   { {"assert", required_argument, NULL, OPTION_ASSERT},
 371     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 372   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 373     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 374   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 375     '\0', NULL, NULL, ONE_DASH },
 376   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 377     '\0', NULL, NULL, ONE_DASH },
 378   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 379     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 380   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 381     '\0', NULL, NULL, ONE_DASH },
 382   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 383     '\0', NULL, NULL, ONE_DASH },
 384   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 385     '\0', NULL, NULL, ONE_DASH },
 386   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 387     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 388   { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
 389     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 390   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 391     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 392     TWO_DASHES },
 393   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 394     '\0', NULL, N_("Do not check section addresses for overlaps"),
 395     TWO_DASHES },
 396   { {"copy-dt-needed-entries", no_argument, NULL,
 397      OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 398     '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
 399     TWO_DASHES },
 400   { {"no-copy-dt-needed-entries", no_argument, NULL,
 401      OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 402     '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
 403     TWO_DASHES },
 404
 405   { {"cref", no_argument, NULL, OPTION_CREF},
 406     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 407   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 408     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 409   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 410     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 411     TWO_DASHES },
 412   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 413     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 414   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 415     '\0', NULL, N_("Treat warnings as errors"),
 416     TWO_DASHES },
 417   { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
 418     '\0', NULL, N_("Do not treat warnings as errors (default)"),
 419     TWO_DASHES },
 420   { {"fini", required_argument, NULL, OPTION_FINI},
 421     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 422   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 423     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 424   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 425     '\0', NULL, N_("Remove unused sections (on some targets)"),
 426     TWO_DASHES },
 427   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 428     '\0', NULL, N_("Don't remove unused sections (default)"),
 429     TWO_DASHES },
 430   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 431     '\0', NULL, N_("List removed unused sections on stderr"),
 432     TWO_DASHES },
 433   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 434     '\0', NULL, N_("Do not list removed unused sections"),
 435     TWO_DASHES },
 436   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 437     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 438     TWO_DASHES },
 439   { {"help", no_argument, NULL, OPTION_HELP},
 440     '\0', NULL, N_("Print option help"), TWO_DASHES },
 441   { {"init", required_argument, NULL, OPTION_INIT},
 442     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 443   { {"Map", required_argument, NULL, OPTION_MAP},
 444     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 445   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 446     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 447   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 448     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 449   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 450     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 451   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 452     '\0', NULL, N_("Do not allow unresolved references in object files"),
 453     TWO_DASHES },
 454   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 455     '\0', NULL, N_("Allow unresolved references in shared libraries"),
 456     TWO_DASHES },
 457   { {"no-allow-shlib-undefined", no_argument, NULL,
 458      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 459     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 460     TWO_DASHES },
 461   { {"allow-multiple-definition", no_argument, NULL,
 462      OPTION_ALLOW_MULTIPLE_DEFINITION},
 463     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 464   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 465     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 466   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 467     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 468   { {"default-imported-symver", no_argument, NULL,
 469       OPTION_DEFAULT_IMPORTED_SYMVER},
 470     '\0', NULL, N_("Create default symbol version for imported symbols"),
 471     TWO_DASHES },
 472   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 473     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 474   { {"no-warn-search-mismatch", no_argument, NULL,
 475      OPTION_NO_WARN_SEARCH_MISMATCH},
 476     '\0', NULL, N_("Don't warn on finding an incompatible library"),
 477     TWO_DASHES},
 478   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 479     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 480   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 481     '\0', NULL, N_("Create an output file even if errors occur"),
 482     TWO_DASHES },
 483   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 484     '\0', NULL, NULL, NO_HELP },
 485   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 486     '\0', NULL, N_("Only use library directories specified on\n"
 487                    "                                the command line"),
 488     ONE_DASH },
 489   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 490     '\0', N_("TARGET"), N_("Specify target of output file"),
 491     EXACTLY_TWO_DASHES },
 492   { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
 493     '\0', NULL, N_("Print default output format"), 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", optional_argument, NULL, OPTION_VERBOSE},
 564     '\0', N_("[=NUMBER]"),
 565     N_("Output lots of information during link"), TWO_DASHES },
 566   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 567     '\0', NULL, NULL, NO_HELP },
 568   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 569     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 570   { {"version-exports-section", required_argument, NULL,
 571      OPTION_VERSION_EXPORTS_SECTION },
 572     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 573                            "                                SYMBOL as the version."),
 574     TWO_DASHES },
 575   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 576     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 577   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 578     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 579   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 580     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 581   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 582     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 583   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 584     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 585   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 586     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 587     TWO_DASHES },
 588   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 589     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 590   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 591     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 592   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 593     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 594     TWO_DASHES },
 595   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 596     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 597     TWO_DASHES },
 598   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 599     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 600     TWO_DASHES },
 601   { {"warn-unresolved-symbols", no_argument, NULL,
 602      OPTION_WARN_UNRESOLVED_SYMBOLS},
 603     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 604   { {"error-unresolved-symbols", no_argument, NULL,
 605      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 606     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 607   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 608     '\0', NULL, N_("Include all objects from following archives"),
 609     TWO_DASHES },
 610   { {"wrap", required_argument, NULL, OPTION_WRAP},
 611     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 612 };
 613
 614 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 615
 616 void
 617 parse_args (unsigned argc, char **argv)
 618 {
 619   unsigned i;
 620   int is, il, irl;
 621   int ingroup = 0;
 622   char *default_dirlist = NULL;
 623   char *shortopts;
 624   struct option *longopts;
 625   struct option *really_longopts;
 626   int last_optind;
 627   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 628
 629   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 630   longopts = (struct option *)
 631       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 632   really_longopts = (struct option *)
 633       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 634
 635   /* Starting the short option string with '-' is for programs that
 636      expect options and other ARGV-elements in any order and that care about
 637      the ordering of the two.  We describe each non-option ARGV-element
 638      as if it were the argument of an option with character code 1.  */
 639   shortopts[0] = '-';
 640   is = 1;
 641   il = 0;
 642   irl = 0;
 643   for (i = 0; i < OPTION_COUNT; i++)
 644     {
 645       if (ld_options[i].shortopt != '\0')
 646         {
 647           shortopts[is] = ld_options[i].shortopt;
 648           ++is;
 649           if (ld_options[i].opt.has_arg == required_argument
 650               || ld_options[i].opt.has_arg == optional_argument)
 651             {
 652               shortopts[is] = ':';
 653               ++is;
 654               if (ld_options[i].opt.has_arg == optional_argument)
 655                 {
 656                   shortopts[is] = ':';
 657                   ++is;
 658                 }
 659             }
 660         }
 661       if (ld_options[i].opt.name != NULL)
 662         {
 663           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 664             {
 665               really_longopts[irl] = ld_options[i].opt;
 666               ++irl;
 667             }
 668           else
 669             {
 670               longopts[il] = ld_options[i].opt;
 671               ++il;
 672             }
 673         }
 674     }
 675   shortopts[is] = '\0';
 676   longopts[il].name = NULL;
 677   really_longopts[irl].name = NULL;
 678
 679   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 680
 681   /* The -G option is ambiguous on different platforms.  Sometimes it
 682      specifies the largest data size to put into the small data
 683      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 684      the first form takes an argument, while the second does not.
 685
 686      We need to permit the --shared form because on some platforms,
 687      such as Solaris, gcc -shared will pass -G to the linker.
 688
 689      To permit either usage, we look through the argument list.  If we
 690      find -G not followed by a number, we change it into --shared.
 691      This will work for most normal cases.  */
 692   for (i = 1; i < argc; i++)
 693     if (strcmp (argv[i], "-G") == 0
 694         && (i + 1 >= argc
 695             || ! ISDIGIT (argv[i + 1][0])))
 696       argv[i] = (char *) "--shared";
 697
 698   /* Because we permit long options to start with a single dash, and
 699      we have a --library option, and the -l option is conventionally
 700      used with an immediately following argument, we can have bad
 701      results if somebody tries to use -l with a library whose name
 702      happens to start with "ibrary", as in -li.  We avoid problems by
 703      simply turning -l into --library.  This means that users will
 704      have to use two dashes in order to use --library, which is OK
 705      since that's how it is documented.
 706
 707      FIXME: It's possible that this problem can arise for other short
 708      options as well, although the user does always have the recourse
 709      of adding a space between the option and the argument.  */
 710   for (i = 1; i < argc; i++)
 711     {
 712       if (argv[i][0] == '-'
 713           && argv[i][1] == 'l'
 714           && argv[i][2] != '\0')
 715         {
 716           char *n;
 717
 718           n = (char *) xmalloc (strlen (argv[i]) + 20);
 719           sprintf (n, "--library=%s", argv[i] + 2);
 720           argv[i] = n;
 721         }
 722     }
 723
 724   last_optind = -1;
 725   while (1)
 726     {
 727       int longind;
 728       int optc;
 729       static unsigned int defsym_count;
 730
 731       /* Using last_optind lets us avoid calling ldemul_parse_args
 732          multiple times on a single option, which would lead to
 733          confusion in the internal static variables maintained by
 734          getopt.  This could otherwise happen for an argument like
 735          -nx, in which the -n is parsed as a single option, and we
 736          loop around to pick up the -x.  */
 737       if (optind != last_optind)
 738         if (ldemul_parse_args (argc, argv))
 739           continue;
 740
 741       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 742          can indicate a long option.  */
 743       opterr = 0;
 744       last_optind = optind;
 745       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 746       if (optc == '?')
 747         {
 748           optind = last_optind;
 749           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 750         }
 751
 752       if (ldemul_handle_option (optc))
 753         continue;
 754
 755       if (optc == -1)
 756         break;
 757
 758       switch (optc)
 759         {
 760         case '?':
 761           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 762           /* Fall through.  */
 763
 764         default:
 765           einfo (_("%P%F: use the --help option for usage information\n"));
 766
 767         case 1:                 /* File name.  */
 768           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 769           break;
 770
 771         case OPTION_IGNORE:
 772           break;
 773         case 'a':
 774           /* For HP/UX compatibility.  Actually -a shared should mean
 775              ``use only shared libraries'' but, then, we don't
 776              currently support shared libraries on HP/UX anyhow.  */
 777           if (strcmp (optarg, "archive") == 0)
 778             config.dynamic_link = FALSE;
 779           else if (strcmp (optarg, "shared") == 0
 780                    || strcmp (optarg, "default") == 0)
 781             config.dynamic_link = TRUE;
 782           else
 783             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 784           break;
 785         case OPTION_ASSERT:
 786           /* FIXME: We just ignore these, but we should handle them.  */
 787           if (strcmp (optarg, "definitions") == 0)
 788             ;
 789           else if (strcmp (optarg, "nodefinitions") == 0)
 790             ;
 791           else if (strcmp (optarg, "nosymbolic") == 0)
 792             ;
 793           else if (strcmp (optarg, "pure-text") == 0)
 794             ;
 795           else
 796             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 797           break;
 798         case 'A':
 799           ldfile_add_arch (optarg);
 800           break;
 801         case 'b':
 802           lang_add_target (optarg);
 803           break;
 804         case 'c':
 805           ldfile_open_command_file (optarg);
 806           parser_input = input_mri_script;
 807           yyparse ();
 808           break;
 809         case OPTION_CALL_SHARED:
 810           config.dynamic_link = TRUE;
 811           break;
 812         case OPTION_NON_SHARED:
 813           config.dynamic_link = FALSE;
 814           break;
 815         case OPTION_CREF:
 816           command_line.cref = TRUE;
 817           link_info.notice_all = TRUE;
 818           break;
 819         case 'd':
 820           command_line.force_common_definition = TRUE;
 821           break;
 822         case OPTION_DEFSYM:
 823           lex_string = optarg;
 824           lex_redirect (optarg, "--defsym", ++defsym_count);
 825           parser_input = input_defsym;
 826           yyparse ();
 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         case OPTION_PRINT_OUTPUT_FORMAT:
1062           command_line.print_output_format = TRUE;
1063           break;
1064 #ifdef ENABLE_PLUGINS
1065         case OPTION_PLUGIN:
1066           if (plugin_opt_plugin (optarg))
1067             einfo (_("%P%F: %s: error loading plugin\n"),
1068                    plugin_error_plugin ());
1069           break;
1070         case OPTION_PLUGIN_OPT:
1071           if (plugin_opt_plugin_arg (optarg))
1072             einfo(_("%P%F: bad -plugin-opt option\n"));
1073           break;
1074 #endif /* ENABLE_PLUGINS */
1075         case 'q':
1076           link_info.emitrelocations = TRUE;
1077           break;
1078         case 'i':
1079         case 'r':
1080           if (optind == last_optind)
1081             /* This can happen if the user put "-rpath,a" on the command
1082                line.  (Or something similar.  The comma is important).
1083                Getopt becomes confused and thinks that this is a -r option
1084                but it cannot parse the text after the -r so it refuses to
1085                increment the optind counter.  Detect this case and issue
1086                an error message here.  We cannot just make this a warning,
1087                increment optind, and continue because getopt is too confused
1088                and will seg-fault the next time around.  */
1089             einfo(_("%P%F: bad -rpath option\n"));
1090
1091           link_info.relocatable = TRUE;
1092           config.build_constructors = FALSE;
1093           config.magic_demand_paged = FALSE;
1094           config.text_read_only = FALSE;
1095           config.dynamic_link = FALSE;
1096           break;
1097         case 'R':
1098           /* The GNU linker traditionally uses -R to mean to include
1099              only the symbols from a file.  The Solaris linker uses -R
1100              to set the path used by the runtime linker to find
1101              libraries.  This is the GNU linker -rpath argument.  We
1102              try to support both simultaneously by checking the file
1103              named.  If it is a directory, rather than a regular file,
1104              we assume -rpath was meant.  */
1105           {
1106             struct stat s;
1107
1108             if (stat (optarg, &s) >= 0
1109                 && ! S_ISDIR (s.st_mode))
1110               {
1111                 lang_add_input_file (optarg,
1112                                      lang_input_file_is_symbols_only_enum,
1113                                      NULL);
1114                 break;
1115               }
1116           }
1117           /* Fall through.  */
1118         case OPTION_RPATH:
1119           if (command_line.rpath == NULL)
1120             command_line.rpath = xstrdup (optarg);
1121           else
1122             {
1123               size_t rpath_len = strlen (command_line.rpath);
1124               size_t optarg_len = strlen (optarg);
1125               char *buf;
1126               char *cp = command_line.rpath;
1127
1128               /* First see whether OPTARG is already in the path.  */
1129               do
1130                 {
1131                   if (strncmp (optarg, cp, optarg_len) == 0
1132                       && (cp[optarg_len] == 0
1133                           || cp[optarg_len] == config.rpath_separator))
1134                     /* We found it.  */
1135                     break;
1136
1137                   /* Not yet found.  */
1138                   cp = strchr (cp, config.rpath_separator);
1139                   if (cp != NULL)
1140                     ++cp;
1141                 }
1142               while (cp != NULL);
1143
1144               if (cp == NULL)
1145                 {
1146                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1147                   sprintf (buf, "%s%c%s", command_line.rpath,
1148                            config.rpath_separator, optarg);
1149                   free (command_line.rpath);
1150                   command_line.rpath = buf;
1151                 }
1152             }
1153           break;
1154         case OPTION_RPATH_LINK:
1155           if (command_line.rpath_link == NULL)
1156             command_line.rpath_link = xstrdup (optarg);
1157           else
1158             {
1159               char *buf;
1160
1161               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1162                                       + strlen (optarg)
1163                                       + 2);
1164               sprintf (buf, "%s%c%s", command_line.rpath_link,
1165                        config.rpath_separator, optarg);
1166               free (command_line.rpath_link);
1167               command_line.rpath_link = buf;
1168             }
1169           break;
1170         case OPTION_NO_RELAX:
1171           DISABLE_RELAXATION;
1172           break;
1173         case OPTION_RELAX:
1174           ENABLE_RELAXATION;
1175           break;
1176         case OPTION_RETAIN_SYMBOLS_FILE:
1177           add_keepsyms_file (optarg);
1178           break;
1179         case 'S':
1180           link_info.strip = strip_debugger;
1181           break;
1182         case 's':
1183           link_info.strip = strip_all;
1184           break;
1185         case OPTION_STRIP_DISCARDED:
1186           link_info.strip_discarded = TRUE;
1187           break;
1188         case OPTION_NO_STRIP_DISCARDED:
1189           link_info.strip_discarded = FALSE;
1190           break;
1191         case OPTION_SHARED:
1192           if (config.has_shared)
1193             {
1194               link_info.shared = TRUE;
1195               /* When creating a shared library, the default
1196                  behaviour is to ignore any unresolved references.  */
1197               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1198                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1199               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1200                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1201             }
1202           else
1203             einfo (_("%P%F: -shared not supported\n"));
1204           break;
1205         case OPTION_PIE:
1206           if (config.has_shared)
1207             {
1208               link_info.shared = TRUE;
1209               link_info.pie = TRUE;
1210             }
1211           else
1212             einfo (_("%P%F: -pie not supported\n"));
1213           break;
1214         case 'h':               /* Used on Solaris.  */
1215         case OPTION_SONAME:
1216           command_line.soname = optarg;
1217           break;
1218         case OPTION_SORT_COMMON:
1219           if (optarg == NULL
1220               || strcmp (optarg, N_("descending")) == 0)
1221             config.sort_common = sort_descending;
1222           else if (strcmp (optarg, N_("ascending")) == 0)
1223             config.sort_common = sort_ascending;
1224           else
1225             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1226                    optarg);
1227           break;
1228         case OPTION_SORT_SECTION:
1229           if (strcmp (optarg, N_("name")) == 0)
1230             sort_section = by_name;
1231           else if (strcmp (optarg, N_("alignment")) == 0)
1232             sort_section = by_alignment;
1233           else
1234             einfo (_("%P%F: invalid section sorting option: %s\n"),
1235                    optarg);
1236           break;
1237         case OPTION_STATS:
1238           config.stats = TRUE;
1239           break;
1240         case OPTION_SYMBOLIC:
1241           command_line.symbolic = symbolic;
1242           break;
1243         case OPTION_SYMBOLIC_FUNCTIONS:
1244           command_line.symbolic = symbolic_functions;
1245           break;
1246         case 't':
1247           trace_files = TRUE;
1248           break;
1249         case 'T':
1250           previous_script_handle = saved_script_handle;
1251           ldfile_open_command_file (optarg);
1252           parser_input = input_script;
1253           yyparse ();
1254           previous_script_handle = NULL;
1255           break;
1256         case OPTION_DEFAULT_SCRIPT:
1257           command_line.default_script = optarg;
1258           break;
1259         case OPTION_SECTION_START:
1260           {
1261             char *optarg2;
1262             char *sec_name;
1263             int len;
1264
1265             /* Check for <something>=<somthing>...  */
1266             optarg2 = strchr (optarg, '=');
1267             if (optarg2 == NULL)
1268               einfo (_("%P%F: invalid argument to option"
1269                        " \"--section-start\"\n"));
1270
1271             optarg2++;
1272
1273             /* So far so good.  Are all the args present?  */
1274             if ((*optarg == '\0') || (*optarg2 == '\0'))
1275               einfo (_("%P%F: missing argument(s) to option"
1276                        " \"--section-start\"\n"));
1277
1278             /* We must copy the section name as set_section_start
1279                doesn't do it for us.  */
1280             len = optarg2 - optarg;
1281             sec_name = (char *) xmalloc (len);
1282             memcpy (sec_name, optarg, len - 1);
1283             sec_name[len - 1] = 0;
1284
1285             /* Then set it...  */
1286             set_section_start (sec_name, optarg2);
1287           }
1288           break;
1289         case OPTION_TARGET_HELP:
1290           /* Mention any target specific options.  */
1291           ldemul_list_emulation_options (stdout);
1292           exit (0);
1293         case OPTION_TBSS:
1294           set_segment_start (".bss", optarg);
1295           break;
1296         case OPTION_TDATA:
1297           set_segment_start (".data", optarg);
1298           break;
1299         case OPTION_TTEXT:
1300           set_segment_start (".text", optarg);
1301           break;
1302         case OPTION_TTEXT_SEGMENT:
1303           set_segment_start (".text-segment", optarg);
1304           break;
1305         case OPTION_TRADITIONAL_FORMAT:
1306           link_info.traditional_format = TRUE;
1307           break;
1308         case OPTION_TASK_LINK:
1309           link_info.task_link = TRUE;
1310           /* Fall through - do an implied -r option.  */
1311         case OPTION_UR:
1312           link_info.relocatable = TRUE;
1313           config.build_constructors = TRUE;
1314           config.magic_demand_paged = FALSE;
1315           config.text_read_only = FALSE;
1316           config.dynamic_link = FALSE;
1317           break;
1318         case 'u':
1319           ldlang_add_undef (optarg, TRUE);
1320           break;
1321         case OPTION_UNIQUE:
1322           if (optarg != NULL)
1323             lang_add_unique (optarg);
1324           else
1325             config.unique_orphan_sections = TRUE;
1326           break;
1327         case OPTION_VERBOSE:
1328           ldversion (1);
1329           version_printed = TRUE;
1330           trace_file_tries = TRUE;
1331           overflow_cutoff_limit = -2;
1332           if (optarg != NULL)
1333             {
1334               char *end;
1335               int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1336               if (*end)
1337                 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1338 #ifdef ENABLE_PLUGINS
1339               report_plugin_symbols = level > 1;
1340 #endif /* ENABLE_PLUGINS */
1341             }
1342           break;
1343         case 'v':
1344           ldversion (0);
1345           version_printed = TRUE;
1346           break;
1347         case 'V':
1348           ldversion (1);
1349           version_printed = TRUE;
1350           break;
1351         case OPTION_VERSION:
1352           ldversion (2);
1353           xexit (0);
1354           break;
1355         case OPTION_VERSION_SCRIPT:
1356           /* This option indicates a small script that only specifies
1357              version information.  Read it, but don't assume that
1358              we've seen a linker script.  */
1359           {
1360             FILE *hold_script_handle;
1361
1362             hold_script_handle = saved_script_handle;
1363             ldfile_open_command_file (optarg);
1364             saved_script_handle = hold_script_handle;
1365             parser_input = input_version_script;
1366             yyparse ();
1367           }
1368           break;
1369         case OPTION_VERSION_EXPORTS_SECTION:
1370           /* This option records a version symbol to be applied to the
1371              symbols listed for export to be found in the object files
1372              .exports sections.  */
1373           command_line.version_exports_section = optarg;
1374           break;
1375         case OPTION_DYNAMIC_LIST_DATA:
1376           command_line.dynamic_list = dynamic_list_data;
1377           if (command_line.symbolic == symbolic)
1378             command_line.symbolic = symbolic_unset;
1379           break;
1380         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1381           lang_append_dynamic_list_cpp_typeinfo ();
1382           if (command_line.dynamic_list != dynamic_list_data)
1383             command_line.dynamic_list = dynamic_list;
1384           if (command_line.symbolic == symbolic)
1385             command_line.symbolic = symbolic_unset;
1386           break;
1387         case OPTION_DYNAMIC_LIST_CPP_NEW:
1388           lang_append_dynamic_list_cpp_new ();
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_DYNAMIC_LIST:
1395           /* This option indicates a small script that only specifies
1396              a dynamic list.  Read it, but don't assume that we've
1397              seen a linker script.  */
1398           {
1399             FILE *hold_script_handle;
1400
1401             hold_script_handle = saved_script_handle;
1402             ldfile_open_command_file (optarg);
1403             saved_script_handle = hold_script_handle;
1404             parser_input = input_dynamic_list;
1405             yyparse ();
1406           }
1407           if (command_line.dynamic_list != dynamic_list_data)
1408             command_line.dynamic_list = dynamic_list;
1409           if (command_line.symbolic == symbolic)
1410             command_line.symbolic = symbolic_unset;
1411           break;
1412         case OPTION_WARN_COMMON:
1413           config.warn_common = TRUE;
1414           break;
1415         case OPTION_WARN_CONSTRUCTORS:
1416           config.warn_constructors = TRUE;
1417           break;
1418         case OPTION_WARN_FATAL:
1419           config.fatal_warnings = TRUE;
1420           break;
1421         case OPTION_NO_WARN_FATAL:
1422           config.fatal_warnings = FALSE;
1423           break;
1424         case OPTION_WARN_MULTIPLE_GP:
1425           config.warn_multiple_gp = TRUE;
1426           break;
1427         case OPTION_WARN_ONCE:
1428           config.warn_once = TRUE;
1429           break;
1430         case OPTION_WARN_SECTION_ALIGN:
1431           config.warn_section_align = TRUE;
1432           break;
1433         case OPTION_WARN_SHARED_TEXTREL:
1434           link_info.warn_shared_textrel = TRUE;
1435           break;
1436         case OPTION_WARN_ALTERNATE_EM:
1437           link_info.warn_alternate_em = TRUE;
1438           break;
1439         case OPTION_WHOLE_ARCHIVE:
1440           whole_archive = TRUE;
1441           break;
1442         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1443           add_DT_NEEDED_for_dynamic = TRUE;
1444           break;
1445         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1446           add_DT_NEEDED_for_dynamic = FALSE;
1447           break;
1448         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1449           add_DT_NEEDED_for_regular = TRUE;
1450           break;
1451         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1452           add_DT_NEEDED_for_regular = FALSE;
1453           break;
1454         case OPTION_WRAP:
1455           add_wrap (optarg);
1456           break;
1457         case OPTION_DISCARD_NONE:
1458           link_info.discard = discard_none;
1459           break;
1460         case 'X':
1461           link_info.discard = discard_l;
1462           break;
1463         case 'x':
1464           link_info.discard = discard_all;
1465           break;
1466         case 'Y':
1467           if (CONST_STRNEQ (optarg, "P,"))
1468             optarg += 2;
1469           if (default_dirlist != NULL)
1470             free (default_dirlist);
1471           default_dirlist = xstrdup (optarg);
1472           break;
1473         case 'y':
1474           add_ysym (optarg);
1475           break;
1476         case OPTION_SPARE_DYNAMIC_TAGS:
1477           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1478           break;
1479         case OPTION_SPLIT_BY_RELOC:
1480           if (optarg != NULL)
1481             config.split_by_reloc = strtoul (optarg, NULL, 0);
1482           else
1483             config.split_by_reloc = 32768;
1484           break;
1485         case OPTION_SPLIT_BY_FILE:
1486           if (optarg != NULL)
1487             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1488           else
1489             config.split_by_file = 1;
1490           break;
1491         case OPTION_CHECK_SECTIONS:
1492           command_line.check_section_addresses = 1;
1493           break;
1494         case OPTION_NO_CHECK_SECTIONS:
1495           command_line.check_section_addresses = 0;
1496           break;
1497         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1498           command_line.accept_unknown_input_arch = TRUE;
1499           break;
1500         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1501           command_line.accept_unknown_input_arch = FALSE;
1502           break;
1503         case '(':
1504           lang_enter_group ();
1505           ingroup++;
1506           break;
1507         case ')':
1508           if (! ingroup)
1509             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1510
1511           lang_leave_group ();
1512           ingroup--;
1513           break;
1514
1515         case OPTION_INIT:
1516           link_info.init_function = optarg;
1517           break;
1518
1519         case OPTION_FINI:
1520           link_info.fini_function = optarg;
1521           break;
1522
1523         case OPTION_REDUCE_MEMORY_OVERHEADS:
1524           link_info.reduce_memory_overheads = TRUE;
1525           if (config.hash_table_size == 0)
1526             config.hash_table_size = 1021;
1527           break;
1528
1529         case OPTION_HASH_SIZE:
1530           {
1531             bfd_size_type new_size;
1532
1533             new_size = strtoul (optarg, NULL, 0);
1534             if (new_size)
1535               config.hash_table_size = new_size;
1536             else
1537               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1538           }
1539           break;
1540         }
1541     }
1542
1543   while (ingroup)
1544     {
1545       lang_leave_group ();
1546       ingroup--;
1547     }
1548
1549   if (default_dirlist != NULL)
1550     {
1551       set_default_dirlist (default_dirlist);
1552       free (default_dirlist);
1553     }
1554
1555   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1556     /* FIXME: Should we allow emulations a chance to set this ?  */
1557     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1558
1559   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1560     /* FIXME: Should we allow emulations a chance to set this ?  */
1561     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1562
1563   if (link_info.relocatable)
1564     {
1565       if (command_line.check_section_addresses < 0)
1566         command_line.check_section_addresses = 0;
1567       if (link_info.shared)
1568         einfo (_("%P%F: -r and -shared may not be used together\n"));
1569     }
1570
1571   /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1572      --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1573      --dynamic-list FILE.  -Bsymbolic and -Bsymbolic-functions are
1574      for shared libraries.  -Bsymbolic overrides all others and vice
1575      versa.  */
1576   switch (command_line.symbolic)
1577     {
1578     case symbolic_unset:
1579       break;
1580     case symbolic:
1581       /* -Bsymbolic is for shared library only.  */
1582       if (link_info.shared)
1583         {
1584           link_info.symbolic = TRUE;
1585           /* Should we free the unused memory?  */
1586           link_info.dynamic_list = NULL;
1587           command_line.dynamic_list = dynamic_list_unset;
1588         }
1589       break;
1590     case symbolic_functions:
1591       /* -Bsymbolic-functions is for shared library only.  */
1592       if (link_info.shared)
1593         command_line.dynamic_list = dynamic_list_data;
1594       break;
1595     }
1596
1597   switch (command_line.dynamic_list)
1598     {
1599     case dynamic_list_unset:
1600       break;
1601     case dynamic_list_data:
1602       link_info.dynamic_data = TRUE;
1603     case dynamic_list:
1604       link_info.dynamic = TRUE;
1605       break;
1606     }
1607
1608   if (! link_info.shared)
1609     {
1610       if (command_line.filter_shlib)
1611         einfo (_("%P%F: -F may not be used without -shared\n"));
1612       if (command_line.auxiliary_filters)
1613         einfo (_("%P%F: -f may not be used without -shared\n"));
1614     }
1615
1616   if (! link_info.shared || link_info.pie)
1617     link_info.executable = TRUE;
1618
1619   /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols).  I
1620      don't see how else this can be handled, since in this case we
1621      must preserve all externally visible symbols.  */
1622   if (link_info.relocatable && link_info.strip == strip_all)
1623     {
1624       link_info.strip = strip_debugger;
1625       if (link_info.discard == discard_sec_merge)
1626         link_info.discard = discard_all;
1627     }
1628 }
1629
1630 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1631    library search path.  */
1632
1633 static void
1634 set_default_dirlist (char *dirlist_ptr)
1635 {
1636   char *p;
1637
1638   while (1)
1639     {
1640       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1641       if (p != NULL)
1642         *p = '\0';
1643       if (*dirlist_ptr != '\0')
1644         ldfile_add_library_path (dirlist_ptr, TRUE);
1645       if (p == NULL)
1646         break;
1647       dirlist_ptr = p + 1;
1648     }
1649 }
1650
1651 static void
1652 set_section_start (char *sect, char *valstr)
1653 {
1654   const char *end;
1655   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1656   if (*end)
1657     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1658   lang_section_start (sect, exp_intop (val), NULL);
1659 }
1660
1661 static void
1662 set_segment_start (const char *section, char *valstr)
1663 {
1664   const char *name;
1665   const char *end;
1666   segment_type *seg;
1667
1668   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1669   if (*end)
1670     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1671   /* If we already have an entry for this segment, update the existing
1672      value.  */
1673   name = section + 1;
1674   for (seg = segments; seg; seg = seg->next)
1675     if (strcmp (seg->name, name) == 0)
1676       {
1677         seg->value = val;
1678         return;
1679       }
1680   /* There was no existing value so we must create a new segment
1681      entry.  */
1682   seg = (segment_type *) stat_alloc (sizeof (*seg));
1683   seg->name = name;
1684   seg->value = val;
1685   seg->used = FALSE;
1686   /* Add it to the linked list of segments.  */
1687   seg->next = segments;
1688   segments = seg;
1689   /* Historically, -Ttext and friends set the base address of a
1690      particular section.  For backwards compatibility, we still do
1691      that.  If a SEGMENT_START directive is seen, the section address
1692      assignment will be disabled.  */
1693   lang_section_start (section, exp_intop (val), seg);
1694 }
1695
1696 \f
1697 /* Print help messages for the options.  */
1698
1699 static void
1700 help (void)
1701 {
1702   unsigned i;
1703   const char **targets, **pp;
1704   int len;
1705
1706   printf (_("Usage: %s [options] file...\n"), program_name);
1707
1708   printf (_("Options:\n"));
1709   for (i = 0; i < OPTION_COUNT; i++)
1710     {
1711       if (ld_options[i].doc != NULL)
1712         {
1713           bfd_boolean comma;
1714           unsigned j;
1715
1716           printf ("  ");
1717
1718           comma = FALSE;
1719           len = 2;
1720
1721           j = i;
1722           do
1723             {
1724               if (ld_options[j].shortopt != '\0'
1725                   && ld_options[j].control != NO_HELP)
1726                 {
1727                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1728                   len += (comma ? 2 : 0) + 2;
1729                   if (ld_options[j].arg != NULL)
1730                     {
1731                       if (ld_options[j].opt.has_arg != optional_argument)
1732                         {
1733                           printf (" ");
1734                           ++len;
1735                         }
1736                       printf ("%s", _(ld_options[j].arg));
1737                       len += strlen (_(ld_options[j].arg));
1738                     }
1739                   comma = TRUE;
1740                 }
1741               ++j;
1742             }
1743           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1744
1745           j = i;
1746           do
1747             {
1748               if (ld_options[j].opt.name != NULL
1749                   && ld_options[j].control != NO_HELP)
1750                 {
1751                   int two_dashes =
1752                     (ld_options[j].control == TWO_DASHES
1753                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1754
1755                   printf ("%s-%s%s",
1756                           comma ? ", " : "",
1757                           two_dashes ? "-" : "",
1758                           ld_options[j].opt.name);
1759                   len += ((comma ? 2 : 0)
1760                           + 1
1761                           + (two_dashes ? 1 : 0)
1762                           + strlen (ld_options[j].opt.name));
1763                   if (ld_options[j].arg != NULL)
1764                     {
1765                       printf (" %s", _(ld_options[j].arg));
1766                       len += 1 + strlen (_(ld_options[j].arg));
1767                     }
1768                   comma = TRUE;
1769                 }
1770               ++j;
1771             }
1772           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1773
1774           if (len >= 30)
1775             {
1776               printf ("\n");
1777               len = 0;
1778             }
1779
1780           for (; len < 30; len++)
1781             putchar (' ');
1782
1783           printf ("%s\n", _(ld_options[i].doc));
1784         }
1785     }
1786   printf (_("  @FILE"));
1787   for (len = strlen ("  @FILE"); len < 30; len++)
1788     putchar (' ');
1789   printf (_("Read options from FILE\n"));
1790
1791   /* Note: Various tools (such as libtool) depend upon the
1792      format of the listings below - do not change them.  */
1793   /* xgettext:c-format */
1794   printf (_("%s: supported targets:"), program_name);
1795   targets = bfd_target_list ();
1796   for (pp = targets; *pp != NULL; pp++)
1797     printf (" %s", *pp);
1798   free (targets);
1799   printf ("\n");
1800
1801   /* xgettext:c-format */
1802   printf (_("%s: supported emulations: "), program_name);
1803   ldemul_list_emulations (stdout);
1804   printf ("\n");
1805
1806   /* xgettext:c-format */
1807   printf (_("%s: emulation specific options:\n"), program_name);
1808   ldemul_list_emulation_options (stdout);
1809   printf ("\n");
1810
1811   if (REPORT_BUGS_TO[0])
1812     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1813 }