ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright (C) 1991-2015 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #include "sysdep.h"
  22 #include "bfd.h"
  23 #include "bfdver.h"
  24 #include "libiberty.h"
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include "safe-ctype.h"
  28 #include "getopt.h"
  29 #include "bfdlink.h"
  30 #include "ld.h"
  31 #include "ldmain.h"
  32 #include "ldmisc.h"
  33 #include "ldexp.h"
  34 #include "ldlang.h"
  35 #include <ldgram.h>
  36 #include "ldlex.h"
  37 #include "ldfile.h"
  38 #include "ldver.h"
  39 #include "ldemul.h"
  40 #include "demangle.h"
  41 #ifdef ENABLE_PLUGINS
  42 #include "plugin.h"
  43 #endif /* ENABLE_PLUGINS */
  44
  45 #ifndef PATH_SEPARATOR
  46 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  47 #define PATH_SEPARATOR ';'
  48 #else
  49 #define PATH_SEPARATOR ':'
  50 #endif
  51 #endif
  52
  53 /* Somewhere above, sys/stat.h got included . . . .  */
  54 #if !defined(S_ISDIR) && defined(S_IFDIR)
  55 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  56 #endif
  57
  58 static void set_default_dirlist (char *);
  59 static void set_section_start (char *, char *);
  60 static void set_segment_start (const char *, char *);
  61 static void help (void);
  62
  63 /* The long options.  This structure is used for both the option
  64    parsing and the help text.  */
  65
  66 enum control_enum {
  67   /* Use one dash before long option name.  */
  68   ONE_DASH,
  69   /* Use two dashes before long option name.  */
  70   TWO_DASHES,
  71   /* Only accept two dashes before the long option name.
  72      This is an overloading of the use of this enum, since originally it
  73      was only intended to tell the --help display function how to display
  74      the long option name.  This feature was added in order to resolve
  75      the confusion about the -omagic command line switch.  Is it setting
  76      the output file name to "magic" or is it setting the NMAGIC flag on
  77      the output ?  It has been decided that it is setting the output file
  78      name, and that if you want to set the NMAGIC flag you should use -N
  79      or --omagic.  */
  80   EXACTLY_TWO_DASHES,
  81   /* Don't mention this option in --help output.  */
  82   NO_HELP
  83 };
  84
  85 struct ld_option
  86 {
  87   /* The long option information.  */
  88   struct option opt;
  89   /* The short option with the same meaning ('\0' if none).  */
  90   char shortopt;
  91   /* The name of the argument (NULL if none).  */
  92   const char *arg;
  93   /* The documentation string.  If this is NULL, this is a synonym for
  94      the previous option.  */
  95   const char *doc;
  96   enum control_enum control;
  97 };
  98
  99 static const struct ld_option ld_options[] =
 100 {
 101   { {NULL, required_argument, NULL, '\0'},
 102     'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 103     ONE_DASH },
 104   { {"architecture", required_argument, NULL, 'A'},
 105     'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 106   { {"format", required_argument, NULL, 'b'},
 107     'b', N_("TARGET"), N_("Specify target for following input files"),
 108     TWO_DASHES },
 109   { {"mri-script", required_argument, NULL, 'c'},
 110     'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 111   { {"dc", no_argument, NULL, 'd'},
 112     'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 113   { {"dp", no_argument, NULL, 'd'},
 114     '\0', NULL, NULL, ONE_DASH },
 115   { {"entry", required_argument, NULL, 'e'},
 116     'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 117   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 118     'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 119   { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
 120     '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
 121   { {"EB", no_argument, NULL, OPTION_EB},
 122     '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 123   { {"EL", no_argument, NULL, OPTION_EL},
 124     '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 125   { {"auxiliary", required_argument, NULL, 'f'},
 126     'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 127     TWO_DASHES },
 128   { {"filter", required_argument, NULL, 'F'},
 129     'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
 130     TWO_DASHES },
 131   { {NULL, no_argument, NULL, '\0'},
 132     'g', NULL, N_("Ignored"), ONE_DASH },
 133   { {"gpsize", required_argument, NULL, 'G'},
 134     'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 135     TWO_DASHES },
 136   { {"soname", required_argument, NULL, OPTION_SONAME},
 137     'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 138   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 139     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
 140     TWO_DASHES },
 141   { {"library", required_argument, NULL, 'l'},
 142     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 143   { {"library-path", required_argument, NULL, 'L'},
 144     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 145     TWO_DASHES },
 146   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 147     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 148   { {NULL, required_argument, NULL, '\0'},
 149     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 150   { {"print-map", no_argument, NULL, 'M'},
 151     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 152   { {"nmagic", no_argument, NULL, 'n'},
 153     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 154   { {"omagic", no_argument, NULL, 'N'},
 155     'N', NULL, N_("Do not page align data, do not make text readonly"),
 156     EXACTLY_TWO_DASHES },
 157   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 158     '\0', NULL, N_("Page align data, make text readonly"),
 159     EXACTLY_TWO_DASHES },
 160   { {"output", required_argument, NULL, 'o'},
 161     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 162   { {NULL, required_argument, NULL, '\0'},
 163     'O', NULL, N_("Optimize output file"), ONE_DASH },
 164 #ifdef ENABLE_PLUGINS
 165   { {"plugin", required_argument, NULL, OPTION_PLUGIN},
 166     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
 167   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
 168     '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
 169   { {"flto", optional_argument, NULL, OPTION_IGNORE},
 170     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 171     ONE_DASH },
 172   { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
 173     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 174     ONE_DASH },
 175 #endif /* ENABLE_PLUGINS */
 176   { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
 177     '\0', NULL, N_("Ignored for GCC linker option compatibility"),
 178     ONE_DASH },
 179   { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
 180     '\0', NULL, N_("Ignored for gold option compatibility"),
 181     TWO_DASHES },
 182   { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
 183     '\0', NULL, N_("Ignored for gold option compatibility"),
 184     TWO_DASHES },
 185   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 186     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 187   { {"emit-relocs", no_argument, NULL, 'q'},
 188     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 189   { {"relocatable", no_argument, NULL, 'r'},
 190     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 191   { {NULL, no_argument, NULL, '\0'},
 192     'i', NULL, NULL, ONE_DASH },
 193   { {"just-symbols", required_argument, NULL, 'R'},
 194     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 195     TWO_DASHES },
 196   { {"strip-all", no_argument, NULL, 's'},
 197     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 198   { {"strip-debug", no_argument, NULL, 'S'},
 199     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 200   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 201     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 202   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 203     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 204   { {"trace", no_argument, NULL, 't'},
 205     't', NULL, N_("Trace file opens"), TWO_DASHES },
 206   { {"script", required_argument, NULL, 'T'},
 207     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 208   { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 209     '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
 210   { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 211     '\0', NULL, NULL, ONE_DASH },
 212   { {"undefined", required_argument, NULL, 'u'},
 213     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 214     TWO_DASHES },
 215   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 216     '\0', N_("[=SECTION]"),
 217     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 218   { {"Ur", no_argument, NULL, OPTION_UR},
 219     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 220   { {"version", no_argument, NULL, OPTION_VERSION},
 221     'v', NULL, N_("Print version information"), TWO_DASHES },
 222   { {NULL, no_argument, NULL, '\0'},
 223     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 224   { {"discard-all", no_argument, NULL, 'x'},
 225     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 226   { {"discard-locals", no_argument, NULL, 'X'},
 227     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 228   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 229     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 230   { {"trace-symbol", required_argument, NULL, 'y'},
 231     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 232   { {NULL, required_argument, NULL, '\0'},
 233     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 234     ONE_DASH },
 235   { {"start-group", no_argument, NULL, '('},
 236     '(', NULL, N_("Start a group"), TWO_DASHES },
 237   { {"end-group", no_argument, NULL, ')'},
 238     ')', NULL, N_("End a group"), TWO_DASHES },
 239   { {"accept-unknown-input-arch", no_argument, NULL,
 240      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 241     '\0', NULL,
 242     N_("Accept input files whose architecture cannot be determined"),
 243     TWO_DASHES },
 244   { {"no-accept-unknown-input-arch", no_argument, NULL,
 245      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 246     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 247     TWO_DASHES },
 248
 249   /* The next two options are deprecated because of their similarity to
 250      --as-needed and --no-as-needed.  They have been replaced by
 251      --copy-dt-needed-entries and --no-copy-dt-needed-entries.  */
 252   { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 253     '\0', NULL, NULL, NO_HELP },
 254   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 255     '\0', NULL, NULL, NO_HELP },
 256
 257   { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
 258     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 259     TWO_DASHES },
 260   { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
 261     '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
 262                    "                                the command line"),
 263     TWO_DASHES },
 264   { {"assert", required_argument, NULL, OPTION_ASSERT},
 265     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 266   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 267     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 268   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 269     '\0', NULL, NULL, ONE_DASH },
 270   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 271     '\0', NULL, NULL, ONE_DASH },
 272   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 273     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 274   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 275     '\0', NULL, NULL, ONE_DASH },
 276   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 277     '\0', NULL, NULL, ONE_DASH },
 278   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 279     '\0', NULL, NULL, ONE_DASH },
 280   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 281     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 282   { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
 283     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 284   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 285     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 286     TWO_DASHES },
 287   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 288     '\0', NULL, N_("Do not check section addresses for overlaps"),
 289     TWO_DASHES },
 290   { {"copy-dt-needed-entries", no_argument, NULL,
 291      OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 292     '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
 293     TWO_DASHES },
 294   { {"no-copy-dt-needed-entries", no_argument, NULL,
 295      OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 296     '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
 297     TWO_DASHES },
 298
 299   { {"cref", no_argument, NULL, OPTION_CREF},
 300     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 301   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 302     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 303   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 304     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 305     TWO_DASHES },
 306   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 307     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 308   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 309     '\0', NULL, N_("Treat warnings as errors"),
 310     TWO_DASHES },
 311   { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
 312     '\0', NULL, N_("Do not treat warnings as errors (default)"),
 313     TWO_DASHES },
 314   { {"fini", required_argument, NULL, OPTION_FINI},
 315     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 316   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 317     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 318   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 319     '\0', NULL, N_("Remove unused sections (on some targets)"),
 320     TWO_DASHES },
 321   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 322     '\0', NULL, N_("Don't remove unused sections (default)"),
 323     TWO_DASHES },
 324   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 325     '\0', NULL, N_("List removed unused sections on stderr"),
 326     TWO_DASHES },
 327   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 328     '\0', NULL, N_("Do not list removed unused sections"),
 329     TWO_DASHES },
 330   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 331     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 332     TWO_DASHES },
 333   { {"help", no_argument, NULL, OPTION_HELP},
 334     '\0', NULL, N_("Print option help"), TWO_DASHES },
 335   { {"init", required_argument, NULL, OPTION_INIT},
 336     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 337   { {"Map", required_argument, NULL, OPTION_MAP},
 338     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 339   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 340     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 341   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 342     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 343   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 344     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 345   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 346     '\0', NULL, N_("Do not allow unresolved references in object files"),
 347     TWO_DASHES },
 348   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 349     '\0', NULL, N_("Allow unresolved references in shared libraries"),
 350     TWO_DASHES },
 351   { {"no-allow-shlib-undefined", no_argument, NULL,
 352      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 353     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 354     TWO_DASHES },
 355   { {"allow-multiple-definition", no_argument, NULL,
 356      OPTION_ALLOW_MULTIPLE_DEFINITION},
 357     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 358   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 359     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 360   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 361     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 362   { {"default-imported-symver", no_argument, NULL,
 363       OPTION_DEFAULT_IMPORTED_SYMVER},
 364     '\0', NULL, N_("Create default symbol version for imported symbols"),
 365     TWO_DASHES },
 366   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 367     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 368   { {"no-warn-search-mismatch", no_argument, NULL,
 369      OPTION_NO_WARN_SEARCH_MISMATCH},
 370     '\0', NULL, N_("Don't warn on finding an incompatible library"),
 371     TWO_DASHES},
 372   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 373     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 374   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 375     '\0', NULL, N_("Create an output file even if errors occur"),
 376     TWO_DASHES },
 377   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 378     '\0', NULL, NULL, NO_HELP },
 379   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 380     '\0', NULL, N_("Only use library directories specified on\n"
 381                    "                                the command line"),
 382     ONE_DASH },
 383   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 384     '\0', N_("TARGET"), N_("Specify target of output file"),
 385     EXACTLY_TWO_DASHES },
 386   { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
 387     '\0', NULL, N_("Print default output format"), TWO_DASHES },
 388   { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
 389     '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
 390   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 391     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 392   { {"reduce-memory-overheads", no_argument, NULL,
 393      OPTION_REDUCE_MEMORY_OVERHEADS},
 394     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 395     TWO_DASHES },
 396   { {"relax", no_argument, NULL, OPTION_RELAX},
 397     '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
 398   { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
 399     '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
 400   { {"retain-symbols-file", required_argument, NULL,
 401      OPTION_RETAIN_SYMBOLS_FILE},
 402     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 403   { {"rpath", required_argument, NULL, OPTION_RPATH},
 404     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 405   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 406     '\0', N_("PATH"), N_("Set link time shared library search path"),
 407     ONE_DASH },
 408   { {"shared", no_argument, NULL, OPTION_SHARED},
 409     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 410   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 411     '\0', NULL, NULL, ONE_DASH },
 412   { {"pie", no_argument, NULL, OPTION_PIE},
 413     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 414   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 415     '\0', NULL, NULL, TWO_DASHES },
 416   { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
 417     '\0', N_("[=ascending|descending]"),
 418     N_("Sort common symbols by alignment [in specified order]"),
 419     TWO_DASHES },
 420   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 421     '\0', NULL, NULL, NO_HELP },
 422   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 423     '\0', N_("name|alignment"),
 424     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 425   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 426     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 427     TWO_DASHES },
 428   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 429     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 430     TWO_DASHES },
 431   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 432     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 433     TWO_DASHES },
 434   { {"stats", no_argument, NULL, OPTION_STATS},
 435     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 436   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 437     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 438   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 439     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 440   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 441     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 442   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 443     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 444     TWO_DASHES },
 445   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 446     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 447   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 448     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 449   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 450     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 451   { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
 452     '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
 453   { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
 454     '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
 455   { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
 456     '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
 457   { {"unresolved-symbols=<method>", required_argument, NULL,
 458      OPTION_UNRESOLVED_SYMBOLS},
 459     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 460                    "                                ignore-all, report-all, ignore-in-object-files,\n"
 461                    "                                ignore-in-shared-libs"),
 462     TWO_DASHES },
 463   { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
 464     '\0', N_("[=NUMBER]"),
 465     N_("Output lots of information during link"), TWO_DASHES },
 466   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 467     '\0', NULL, NULL, NO_HELP },
 468   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 469     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 470   { {"version-exports-section", required_argument, NULL,
 471      OPTION_VERSION_EXPORTS_SECTION },
 472     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 473                            "                                SYMBOL as the version."),
 474     TWO_DASHES },
 475   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 476     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 477   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 478     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 479   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 480     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 481   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 482     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 483   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 484     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 485   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 486     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 487     TWO_DASHES },
 488   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 489     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 490   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 491     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 492   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 493     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 494     TWO_DASHES },
 495   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 496     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 497     TWO_DASHES },
 498   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 499     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 500     TWO_DASHES },
 501   { {"warn-unresolved-symbols", no_argument, NULL,
 502      OPTION_WARN_UNRESOLVED_SYMBOLS},
 503     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 504   { {"error-unresolved-symbols", no_argument, NULL,
 505      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 506     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 507   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 508     '\0', NULL, N_("Include all objects from following archives"),
 509     TWO_DASHES },
 510   { {"wrap", required_argument, NULL, OPTION_WRAP},
 511     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 512   { {"ignore-unresolved-symbol", required_argument, NULL,
 513     OPTION_IGNORE_UNRESOLVED_SYMBOL},
 514     '\0', N_("SYMBOL"),
 515     N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
 516   { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
 517     '\0', NULL, N_("Push state of flags governing input file handling"),
 518     TWO_DASHES },
 519   { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
 520     '\0', NULL, N_("Pop state of flags governing input file handling"),
 521     TWO_DASHES },
 522 };
 523
 524 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 525
 526 void
 527 parse_args (unsigned argc, char **argv)
 528 {
 529   unsigned i;
 530   int is, il, irl;
 531   int ingroup = 0;
 532   char *default_dirlist = NULL;
 533   char *shortopts;
 534   struct option *longopts;
 535   struct option *really_longopts;
 536   int last_optind;
 537   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 538
 539   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 540   longopts = (struct option *)
 541       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 542   really_longopts = (struct option *)
 543       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 544
 545   /* Starting the short option string with '-' is for programs that
 546      expect options and other ARGV-elements in any order and that care about
 547      the ordering of the two.  We describe each non-option ARGV-element
 548      as if it were the argument of an option with character code 1.  */
 549   shortopts[0] = '-';
 550   is = 1;
 551   il = 0;
 552   irl = 0;
 553   for (i = 0; i < OPTION_COUNT; i++)
 554     {
 555       if (ld_options[i].shortopt != '\0')
 556         {
 557           shortopts[is] = ld_options[i].shortopt;
 558           ++is;
 559           if (ld_options[i].opt.has_arg == required_argument
 560               || ld_options[i].opt.has_arg == optional_argument)
 561             {
 562               shortopts[is] = ':';
 563               ++is;
 564               if (ld_options[i].opt.has_arg == optional_argument)
 565                 {
 566                   shortopts[is] = ':';
 567                   ++is;
 568                 }
 569             }
 570         }
 571       if (ld_options[i].opt.name != NULL)
 572         {
 573           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 574             {
 575               really_longopts[irl] = ld_options[i].opt;
 576               ++irl;
 577             }
 578           else
 579             {
 580               longopts[il] = ld_options[i].opt;
 581               ++il;
 582             }
 583         }
 584     }
 585   shortopts[is] = '\0';
 586   longopts[il].name = NULL;
 587   really_longopts[irl].name = NULL;
 588
 589   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 590
 591   /* The -G option is ambiguous on different platforms.  Sometimes it
 592      specifies the largest data size to put into the small data
 593      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 594      the first form takes an argument, while the second does not.
 595
 596      We need to permit the --shared form because on some platforms,
 597      such as Solaris, gcc -shared will pass -G to the linker.
 598
 599      To permit either usage, we look through the argument list.  If we
 600      find -G not followed by a number, we change it into --shared.
 601      This will work for most normal cases.  */
 602   for (i = 1; i < argc; i++)
 603     if (strcmp (argv[i], "-G") == 0
 604         && (i + 1 >= argc
 605             || ! ISDIGIT (argv[i + 1][0])))
 606       argv[i] = (char *) "--shared";
 607
 608   /* Because we permit long options to start with a single dash, and
 609      we have a --library option, and the -l option is conventionally
 610      used with an immediately following argument, we can have bad
 611      results if somebody tries to use -l with a library whose name
 612      happens to start with "ibrary", as in -li.  We avoid problems by
 613      simply turning -l into --library.  This means that users will
 614      have to use two dashes in order to use --library, which is OK
 615      since that's how it is documented.
 616
 617      FIXME: It's possible that this problem can arise for other short
 618      options as well, although the user does always have the recourse
 619      of adding a space between the option and the argument.  */
 620   for (i = 1; i < argc; i++)
 621     {
 622       if (argv[i][0] == '-'
 623           && argv[i][1] == 'l'
 624           && argv[i][2] != '\0')
 625         {
 626           char *n;
 627
 628           n = (char *) xmalloc (strlen (argv[i]) + 20);
 629           sprintf (n, "--library=%s", argv[i] + 2);
 630           argv[i] = n;
 631         }
 632     }
 633
 634   last_optind = -1;
 635   while (1)
 636     {
 637       int longind;
 638       int optc;
 639       static unsigned int defsym_count;
 640
 641       /* Using last_optind lets us avoid calling ldemul_parse_args
 642          multiple times on a single option, which would lead to
 643          confusion in the internal static variables maintained by
 644          getopt.  This could otherwise happen for an argument like
 645          -nx, in which the -n is parsed as a single option, and we
 646          loop around to pick up the -x.  */
 647       if (optind != last_optind)
 648         if (ldemul_parse_args (argc, argv))
 649           continue;
 650
 651       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 652          can indicate a long option.  */
 653       opterr = 0;
 654       last_optind = optind;
 655       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 656       if (optc == '?')
 657         {
 658           optind = last_optind;
 659           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 660         }
 661
 662       if (ldemul_handle_option (optc))
 663         continue;
 664
 665       if (optc == -1)
 666         break;
 667
 668       switch (optc)
 669         {
 670         case '?':
 671           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 672           /* Fall through.  */
 673
 674         default:
 675           einfo (_("%P%F: use the --help option for usage information\n"));
 676
 677         case 1:                 /* File name.  */
 678           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 679           break;
 680
 681         case OPTION_IGNORE:
 682           break;
 683         case 'a':
 684           /* For HP/UX compatibility.  Actually -a shared should mean
 685              ``use only shared libraries'' but, then, we don't
 686              currently support shared libraries on HP/UX anyhow.  */
 687           if (strcmp (optarg, "archive") == 0)
 688             input_flags.dynamic = FALSE;
 689           else if (strcmp (optarg, "shared") == 0
 690                    || strcmp (optarg, "default") == 0)
 691             input_flags.dynamic = TRUE;
 692           else
 693             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 694           break;
 695         case OPTION_ASSERT:
 696           /* FIXME: We just ignore these, but we should handle them.  */
 697           if (strcmp (optarg, "definitions") == 0)
 698             ;
 699           else if (strcmp (optarg, "nodefinitions") == 0)
 700             ;
 701           else if (strcmp (optarg, "nosymbolic") == 0)
 702             ;
 703           else if (strcmp (optarg, "pure-text") == 0)
 704             ;
 705           else
 706             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 707           break;
 708         case 'A':
 709           ldfile_add_arch (optarg);
 710           break;
 711         case 'b':
 712           lang_add_target (optarg);
 713           break;
 714         case 'c':
 715           ldfile_open_command_file (optarg);
 716           parser_input = input_mri_script;
 717           yyparse ();
 718           break;
 719         case OPTION_CALL_SHARED:
 720           input_flags.dynamic = TRUE;
 721           break;
 722         case OPTION_NON_SHARED:
 723           input_flags.dynamic = FALSE;
 724           break;
 725         case OPTION_CREF:
 726           command_line.cref = TRUE;
 727           link_info.notice_all = TRUE;
 728           break;
 729         case 'd':
 730           command_line.force_common_definition = TRUE;
 731           break;
 732         case OPTION_DEFSYM:
 733           lex_string = optarg;
 734           lex_redirect (optarg, "--defsym", ++defsym_count);
 735           parser_input = input_defsym;
 736           yyparse ();
 737           lex_string = NULL;
 738           break;
 739         case OPTION_DEMANGLE:
 740           demangling = TRUE;
 741           if (optarg != NULL)
 742             {
 743               enum demangling_styles style;
 744
 745               style = cplus_demangle_name_to_style (optarg);
 746               if (style == unknown_demangling)
 747                 einfo (_("%F%P: unknown demangling style `%s'\n"),
 748                        optarg);
 749
 750               cplus_demangle_set_style (style);
 751             }
 752           break;
 753         case 'I':               /* Used on Solaris.  */
 754         case OPTION_DYNAMIC_LINKER:
 755           command_line.interpreter = optarg;
 756           break;
 757         case OPTION_SYSROOT:
 758           /* Already handled in ldmain.c.  */
 759           break;
 760         case OPTION_EB:
 761           command_line.endian = ENDIAN_BIG;
 762           break;
 763         case OPTION_EL:
 764           command_line.endian = ENDIAN_LITTLE;
 765           break;
 766         case OPTION_EMBEDDED_RELOCS:
 767           command_line.embedded_relocs = TRUE;
 768           break;
 769         case OPTION_EXPORT_DYNAMIC:
 770         case 'E': /* HP/UX compatibility.  */
 771           link_info.export_dynamic = TRUE;
 772           break;
 773         case OPTION_NO_EXPORT_DYNAMIC:
 774           link_info.export_dynamic = FALSE;
 775           break;
 776         case 'e':
 777           lang_add_entry (optarg, TRUE);
 778           break;
 779         case 'f':
 780           if (command_line.auxiliary_filters == NULL)
 781             {
 782               command_line.auxiliary_filters = (char **)
 783                   xmalloc (2 * sizeof (char *));
 784               command_line.auxiliary_filters[0] = optarg;
 785               command_line.auxiliary_filters[1] = NULL;
 786             }
 787           else
 788             {
 789               int c;
 790               char **p;
 791
 792               c = 0;
 793               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 794                 ++c;
 795               command_line.auxiliary_filters = (char **)
 796                   xrealloc (command_line.auxiliary_filters,
 797                             (c + 2) * sizeof (char *));
 798               command_line.auxiliary_filters[c] = optarg;
 799               command_line.auxiliary_filters[c + 1] = NULL;
 800             }
 801           break;
 802         case 'F':
 803           command_line.filter_shlib = optarg;
 804           break;
 805         case OPTION_FORCE_EXE_SUFFIX:
 806           command_line.force_exe_suffix = TRUE;
 807           break;
 808         case 'G':
 809           {
 810             char *end;
 811             g_switch_value = strtoul (optarg, &end, 0);
 812             if (*end)
 813               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 814           }
 815           break;
 816         case 'g':
 817           /* Ignore.  */
 818           break;
 819         case OPTION_GC_SECTIONS:
 820           link_info.gc_sections = TRUE;
 821           break;
 822         case OPTION_PRINT_GC_SECTIONS:
 823           link_info.print_gc_sections = TRUE;
 824           break;
 825         case OPTION_HELP:
 826           help ();
 827           xexit (0);
 828           break;
 829         case 'L':
 830           ldfile_add_library_path (optarg, TRUE);
 831           break;
 832         case 'l':
 833           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 834           break;
 835         case 'M':
 836           config.map_filename = "-";
 837           break;
 838         case 'm':
 839           /* Ignore.  Was handled in a pre-parse.   */
 840           break;
 841         case OPTION_MAP:
 842           config.map_filename = optarg;
 843           break;
 844         case 'N':
 845           config.text_read_only = FALSE;
 846           config.magic_demand_paged = FALSE;
 847           input_flags.dynamic = FALSE;
 848           break;
 849         case OPTION_NO_OMAGIC:
 850           config.text_read_only = TRUE;
 851           config.magic_demand_paged = TRUE;
 852           /* NB/ Does not set input_flags.dynamic to TRUE.
 853              Use --call-shared or -Bdynamic for this.  */
 854           break;
 855         case 'n':
 856           config.magic_demand_paged = FALSE;
 857           input_flags.dynamic = FALSE;
 858           break;
 859         case OPTION_NO_DEFINE_COMMON:
 860           command_line.inhibit_common_definition = TRUE;
 861           break;
 862         case OPTION_NO_DEMANGLE:
 863           demangling = FALSE;
 864           break;
 865         case OPTION_NO_GC_SECTIONS:
 866           link_info.gc_sections = FALSE;
 867           break;
 868         case OPTION_NO_PRINT_GC_SECTIONS:
 869           link_info.print_gc_sections = FALSE;
 870           break;
 871         case OPTION_NO_KEEP_MEMORY:
 872           link_info.keep_memory = FALSE;
 873           break;
 874         case OPTION_NO_UNDEFINED:
 875           link_info.unresolved_syms_in_objects
 876             = how_to_report_unresolved_symbols;
 877           break;
 878         case OPTION_ALLOW_SHLIB_UNDEFINED:
 879           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 880           break;
 881         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 882           link_info.unresolved_syms_in_shared_libs
 883             = how_to_report_unresolved_symbols;
 884           break;
 885         case OPTION_UNRESOLVED_SYMBOLS:
 886           if (strcmp (optarg, "ignore-all") == 0)
 887             {
 888               link_info.unresolved_syms_in_objects = RM_IGNORE;
 889               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 890             }
 891           else if (strcmp (optarg, "report-all") == 0)
 892             {
 893               link_info.unresolved_syms_in_objects
 894                 = how_to_report_unresolved_symbols;
 895               link_info.unresolved_syms_in_shared_libs
 896                 = how_to_report_unresolved_symbols;
 897             }
 898           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 899             {
 900               link_info.unresolved_syms_in_objects = RM_IGNORE;
 901               link_info.unresolved_syms_in_shared_libs
 902                 = how_to_report_unresolved_symbols;
 903             }
 904           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 905             {
 906               link_info.unresolved_syms_in_objects
 907                 = how_to_report_unresolved_symbols;
 908               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 909             }
 910           else
 911             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
 912           break;
 913         case OPTION_WARN_UNRESOLVED_SYMBOLS:
 914           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
 915           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
 916             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
 917           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
 918             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
 919           break;
 920
 921         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
 922           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 923           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
 924             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
 925           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
 926             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
 927           break;
 928         case OPTION_ALLOW_MULTIPLE_DEFINITION:
 929           link_info.allow_multiple_definition = TRUE;
 930           break;
 931         case OPTION_NO_UNDEFINED_VERSION:
 932           link_info.allow_undefined_version = FALSE;
 933           break;
 934         case OPTION_DEFAULT_SYMVER:
 935           link_info.create_default_symver = TRUE;
 936           break;
 937         case OPTION_DEFAULT_IMPORTED_SYMVER:
 938           link_info.default_imported_symver = TRUE;
 939           break;
 940         case OPTION_NO_WARN_MISMATCH:
 941           command_line.warn_mismatch = FALSE;
 942           break;
 943         case OPTION_NO_WARN_SEARCH_MISMATCH:
 944           command_line.warn_search_mismatch = FALSE;
 945           break;
 946         case OPTION_NOINHIBIT_EXEC:
 947           force_make_executable = TRUE;
 948           break;
 949         case OPTION_NOSTDLIB:
 950           config.only_cmd_line_lib_dirs = TRUE;
 951           break;
 952         case OPTION_NO_WHOLE_ARCHIVE:
 953           input_flags.whole_archive = FALSE;
 954           break;
 955         case 'O':
 956           /* FIXME "-O<non-digits> <value>" used to set the address of
 957              section <non-digits>.  Was this for compatibility with
 958              something, or can we create a new option to do that
 959              (with a syntax similar to -defsym)?
 960              getopt can't handle two args to an option without kludges.  */
 961
 962           /* Enable optimizations of output files.  */
 963           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
 964           break;
 965         case 'o':
 966           lang_add_output (optarg, 0);
 967           break;
 968         case OPTION_OFORMAT:
 969           lang_add_output_format (optarg, NULL, NULL, 0);
 970           break;
 971         case OPTION_PRINT_SYSROOT:
 972           if (*ld_sysroot)
 973             puts (ld_sysroot);
 974           xexit (0);
 975           break;
 976         case OPTION_PRINT_OUTPUT_FORMAT:
 977           command_line.print_output_format = TRUE;
 978           break;
 979 #ifdef ENABLE_PLUGINS
 980         case OPTION_PLUGIN:
 981           plugin_opt_plugin (optarg);
 982           break;
 983         case OPTION_PLUGIN_OPT:
 984           if (plugin_opt_plugin_arg (optarg))
 985             einfo(_("%P%F: bad -plugin-opt option\n"));
 986           break;
 987 #endif /* ENABLE_PLUGINS */
 988         case 'q':
 989           link_info.emitrelocations = TRUE;
 990           break;
 991         case 'i':
 992         case 'r':
 993           if (optind == last_optind)
 994             /* This can happen if the user put "-rpath,a" on the command
 995                line.  (Or something similar.  The comma is important).
 996                Getopt becomes confused and thinks that this is a -r option
 997                but it cannot parse the text after the -r so it refuses to
 998                increment the optind counter.  Detect this case and issue
 999                an error message here.  We cannot just make this a warning,
1000                increment optind, and continue because getopt is too confused
1001                and will seg-fault the next time around.  */
1002             einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
1003
1004           link_info.relocatable = TRUE;
1005           config.build_constructors = FALSE;
1006           config.magic_demand_paged = FALSE;
1007           config.text_read_only = FALSE;
1008           input_flags.dynamic = FALSE;
1009           break;
1010         case 'R':
1011           /* The GNU linker traditionally uses -R to mean to include
1012              only the symbols from a file.  The Solaris linker uses -R
1013              to set the path used by the runtime linker to find
1014              libraries.  This is the GNU linker -rpath argument.  We
1015              try to support both simultaneously by checking the file
1016              named.  If it is a directory, rather than a regular file,
1017              we assume -rpath was meant.  */
1018           {
1019             struct stat s;
1020
1021             if (stat (optarg, &s) >= 0
1022                 && ! S_ISDIR (s.st_mode))
1023               {
1024                 lang_add_input_file (optarg,
1025                                      lang_input_file_is_symbols_only_enum,
1026                                      NULL);
1027                 break;
1028               }
1029           }
1030           /* Fall through.  */
1031         case OPTION_RPATH:
1032           if (command_line.rpath == NULL)
1033             command_line.rpath = xstrdup (optarg);
1034           else
1035             {
1036               size_t rpath_len = strlen (command_line.rpath);
1037               size_t optarg_len = strlen (optarg);
1038               char *buf;
1039               char *cp = command_line.rpath;
1040
1041               /* First see whether OPTARG is already in the path.  */
1042               do
1043                 {
1044                   if (strncmp (optarg, cp, optarg_len) == 0
1045                       && (cp[optarg_len] == 0
1046                           || cp[optarg_len] == config.rpath_separator))
1047                     /* We found it.  */
1048                     break;
1049
1050                   /* Not yet found.  */
1051                   cp = strchr (cp, config.rpath_separator);
1052                   if (cp != NULL)
1053                     ++cp;
1054                 }
1055               while (cp != NULL);
1056
1057               if (cp == NULL)
1058                 {
1059                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1060                   sprintf (buf, "%s%c%s", command_line.rpath,
1061                            config.rpath_separator, optarg);
1062                   free (command_line.rpath);
1063                   command_line.rpath = buf;
1064                 }
1065             }
1066           break;
1067         case OPTION_RPATH_LINK:
1068           if (command_line.rpath_link == NULL)
1069             command_line.rpath_link = xstrdup (optarg);
1070           else
1071             {
1072               char *buf;
1073
1074               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1075                                       + strlen (optarg)
1076                                       + 2);
1077               sprintf (buf, "%s%c%s", command_line.rpath_link,
1078                        config.rpath_separator, optarg);
1079               free (command_line.rpath_link);
1080               command_line.rpath_link = buf;
1081             }
1082           break;
1083         case OPTION_NO_RELAX:
1084           DISABLE_RELAXATION;
1085           break;
1086         case OPTION_RELAX:
1087           ENABLE_RELAXATION;
1088           break;
1089         case OPTION_RETAIN_SYMBOLS_FILE:
1090           add_keepsyms_file (optarg);
1091           break;
1092         case 'S':
1093           link_info.strip = strip_debugger;
1094           break;
1095         case 's':
1096           link_info.strip = strip_all;
1097           break;
1098         case OPTION_STRIP_DISCARDED:
1099           link_info.strip_discarded = TRUE;
1100           break;
1101         case OPTION_NO_STRIP_DISCARDED:
1102           link_info.strip_discarded = FALSE;
1103           break;
1104         case OPTION_SHARED:
1105           if (config.has_shared)
1106             {
1107               link_info.shared = TRUE;
1108               /* When creating a shared library, the default
1109                  behaviour is to ignore any unresolved references.  */
1110               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1111                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1112               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1113                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1114             }
1115           else
1116             einfo (_("%P%F: -shared not supported\n"));
1117           break;
1118         case OPTION_PIE:
1119           if (config.has_shared)
1120             {
1121               link_info.shared = TRUE;
1122               link_info.pie = TRUE;
1123             }
1124           else
1125             einfo (_("%P%F: -pie not supported\n"));
1126           break;
1127         case 'h':               /* Used on Solaris.  */
1128         case OPTION_SONAME:
1129           if (optarg[0] == '\0' && command_line.soname
1130               && command_line.soname[0])
1131             einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1132           else
1133             command_line.soname = optarg;
1134           break;
1135         case OPTION_SORT_COMMON:
1136           if (optarg == NULL
1137               || strcmp (optarg, N_("descending")) == 0)
1138             config.sort_common = sort_descending;
1139           else if (strcmp (optarg, N_("ascending")) == 0)
1140             config.sort_common = sort_ascending;
1141           else
1142             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1143                    optarg);
1144           break;
1145         case OPTION_SORT_SECTION:
1146           if (strcmp (optarg, N_("name")) == 0)
1147             sort_section = by_name;
1148           else if (strcmp (optarg, N_("alignment")) == 0)
1149             sort_section = by_alignment;
1150           else
1151             einfo (_("%P%F: invalid section sorting option: %s\n"),
1152                    optarg);
1153           break;
1154         case OPTION_STATS:
1155           config.stats = TRUE;
1156           break;
1157         case OPTION_SYMBOLIC:
1158           command_line.symbolic = symbolic;
1159           break;
1160         case OPTION_SYMBOLIC_FUNCTIONS:
1161           command_line.symbolic = symbolic_functions;
1162           break;
1163         case 't':
1164           trace_files = TRUE;
1165           break;
1166         case 'T':
1167           previous_script_handle = saved_script_handle;
1168           ldfile_open_command_file (optarg);
1169           parser_input = input_script;
1170           yyparse ();
1171           previous_script_handle = NULL;
1172           break;
1173         case OPTION_DEFAULT_SCRIPT:
1174           command_line.default_script = optarg;
1175           break;
1176         case OPTION_SECTION_START:
1177           {
1178             char *optarg2;
1179             char *sec_name;
1180             int len;
1181
1182             /* Check for <something>=<somthing>...  */
1183             optarg2 = strchr (optarg, '=');
1184             if (optarg2 == NULL)
1185               einfo (_("%P%F: invalid argument to option"
1186                        " \"--section-start\"\n"));
1187
1188             optarg2++;
1189
1190             /* So far so good.  Are all the args present?  */
1191             if ((*optarg == '\0') || (*optarg2 == '\0'))
1192               einfo (_("%P%F: missing argument(s) to option"
1193                        " \"--section-start\"\n"));
1194
1195             /* We must copy the section name as set_section_start
1196                doesn't do it for us.  */
1197             len = optarg2 - optarg;
1198             sec_name = (char *) xmalloc (len);
1199             memcpy (sec_name, optarg, len - 1);
1200             sec_name[len - 1] = 0;
1201
1202             /* Then set it...  */
1203             set_section_start (sec_name, optarg2);
1204           }
1205           break;
1206         case OPTION_TARGET_HELP:
1207           /* Mention any target specific options.  */
1208           ldemul_list_emulation_options (stdout);
1209           exit (0);
1210         case OPTION_TBSS:
1211           set_segment_start (".bss", optarg);
1212           break;
1213         case OPTION_TDATA:
1214           set_segment_start (".data", optarg);
1215           break;
1216         case OPTION_TTEXT:
1217           set_segment_start (".text", optarg);
1218           break;
1219         case OPTION_TTEXT_SEGMENT:
1220           set_segment_start (".text-segment", optarg);
1221           break;
1222         case OPTION_TRODATA_SEGMENT:
1223           set_segment_start (".rodata-segment", optarg);
1224           break;
1225         case OPTION_TLDATA_SEGMENT:
1226           set_segment_start (".ldata-segment", optarg);
1227           break;
1228         case OPTION_TRADITIONAL_FORMAT:
1229           link_info.traditional_format = TRUE;
1230           break;
1231         case OPTION_TASK_LINK:
1232           link_info.task_link = TRUE;
1233           /* Fall through - do an implied -r option.  */
1234         case OPTION_UR:
1235           link_info.relocatable = TRUE;
1236           config.build_constructors = TRUE;
1237           config.magic_demand_paged = FALSE;
1238           config.text_read_only = FALSE;
1239           input_flags.dynamic = FALSE;
1240           break;
1241         case 'u':
1242           ldlang_add_undef (optarg, TRUE);
1243           break;
1244         case OPTION_UNIQUE:
1245           if (optarg != NULL)
1246             lang_add_unique (optarg);
1247           else
1248             config.unique_orphan_sections = TRUE;
1249           break;
1250         case OPTION_VERBOSE:
1251           ldversion (1);
1252           version_printed = TRUE;
1253           verbose = TRUE;
1254           overflow_cutoff_limit = -2;
1255           if (optarg != NULL)
1256             {
1257               char *end;
1258               int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1259               if (*end)
1260                 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1261 #ifdef ENABLE_PLUGINS
1262               report_plugin_symbols = level > 1;
1263 #endif /* ENABLE_PLUGINS */
1264             }
1265           break;
1266         case 'v':
1267           ldversion (0);
1268           version_printed = TRUE;
1269           break;
1270         case 'V':
1271           ldversion (1);
1272           version_printed = TRUE;
1273           break;
1274         case OPTION_VERSION:
1275           ldversion (2);
1276           xexit (0);
1277           break;
1278         case OPTION_VERSION_SCRIPT:
1279           /* This option indicates a small script that only specifies
1280              version information.  Read it, but don't assume that
1281              we've seen a linker script.  */
1282           {
1283             FILE *hold_script_handle;
1284
1285             hold_script_handle = saved_script_handle;
1286             ldfile_open_command_file (optarg);
1287             saved_script_handle = hold_script_handle;
1288             parser_input = input_version_script;
1289             yyparse ();
1290           }
1291           break;
1292         case OPTION_VERSION_EXPORTS_SECTION:
1293           /* This option records a version symbol to be applied to the
1294              symbols listed for export to be found in the object files
1295              .exports sections.  */
1296           command_line.version_exports_section = optarg;
1297           break;
1298         case OPTION_DYNAMIC_LIST_DATA:
1299           command_line.dynamic_list = dynamic_list_data;
1300           if (command_line.symbolic == symbolic)
1301             command_line.symbolic = symbolic_unset;
1302           break;
1303         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1304           lang_append_dynamic_list_cpp_typeinfo ();
1305           if (command_line.dynamic_list != dynamic_list_data)
1306             command_line.dynamic_list = dynamic_list;
1307           if (command_line.symbolic == symbolic)
1308             command_line.symbolic = symbolic_unset;
1309           break;
1310         case OPTION_DYNAMIC_LIST_CPP_NEW:
1311           lang_append_dynamic_list_cpp_new ();
1312           if (command_line.dynamic_list != dynamic_list_data)
1313             command_line.dynamic_list = dynamic_list;
1314           if (command_line.symbolic == symbolic)
1315             command_line.symbolic = symbolic_unset;
1316           break;
1317         case OPTION_DYNAMIC_LIST:
1318           /* This option indicates a small script that only specifies
1319              a dynamic list.  Read it, but don't assume that we've
1320              seen a linker script.  */
1321           {
1322             FILE *hold_script_handle;
1323
1324             hold_script_handle = saved_script_handle;
1325             ldfile_open_command_file (optarg);
1326             saved_script_handle = hold_script_handle;
1327             parser_input = input_dynamic_list;
1328             yyparse ();
1329           }
1330           if (command_line.dynamic_list != dynamic_list_data)
1331             command_line.dynamic_list = dynamic_list;
1332           if (command_line.symbolic == symbolic)
1333             command_line.symbolic = symbolic_unset;
1334           break;
1335         case OPTION_WARN_COMMON:
1336           config.warn_common = TRUE;
1337           break;
1338         case OPTION_WARN_CONSTRUCTORS:
1339           config.warn_constructors = TRUE;
1340           break;
1341         case OPTION_WARN_FATAL:
1342           config.fatal_warnings = TRUE;
1343           break;
1344         case OPTION_NO_WARN_FATAL:
1345           config.fatal_warnings = FALSE;
1346           break;
1347         case OPTION_WARN_MULTIPLE_GP:
1348           config.warn_multiple_gp = TRUE;
1349           break;
1350         case OPTION_WARN_ONCE:
1351           config.warn_once = TRUE;
1352           break;
1353         case OPTION_WARN_SECTION_ALIGN:
1354           config.warn_section_align = TRUE;
1355           break;
1356         case OPTION_WARN_SHARED_TEXTREL:
1357           link_info.warn_shared_textrel = TRUE;
1358           break;
1359         case OPTION_WARN_ALTERNATE_EM:
1360           link_info.warn_alternate_em = TRUE;
1361           break;
1362         case OPTION_WHOLE_ARCHIVE:
1363           input_flags.whole_archive = TRUE;
1364           break;
1365         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1366           input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1367           break;
1368         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1369           input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1370           break;
1371         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1372           input_flags.add_DT_NEEDED_for_regular = TRUE;
1373           break;
1374         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1375           input_flags.add_DT_NEEDED_for_regular = FALSE;
1376           break;
1377         case OPTION_WRAP:
1378           add_wrap (optarg);
1379           break;
1380         case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1381           add_ignoresym (&link_info, optarg);
1382           break;
1383         case OPTION_DISCARD_NONE:
1384           link_info.discard = discard_none;
1385           break;
1386         case 'X':
1387           link_info.discard = discard_l;
1388           break;
1389         case 'x':
1390           link_info.discard = discard_all;
1391           break;
1392         case 'Y':
1393           if (CONST_STRNEQ (optarg, "P,"))
1394             optarg += 2;
1395           if (default_dirlist != NULL)
1396             free (default_dirlist);
1397           default_dirlist = xstrdup (optarg);
1398           break;
1399         case 'y':
1400           add_ysym (optarg);
1401           break;
1402         case OPTION_SPARE_DYNAMIC_TAGS:
1403           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1404           break;
1405         case OPTION_SPLIT_BY_RELOC:
1406           if (optarg != NULL)
1407             config.split_by_reloc = strtoul (optarg, NULL, 0);
1408           else
1409             config.split_by_reloc = 32768;
1410           break;
1411         case OPTION_SPLIT_BY_FILE:
1412           if (optarg != NULL)
1413             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1414           else
1415             config.split_by_file = 1;
1416           break;
1417         case OPTION_CHECK_SECTIONS:
1418           command_line.check_section_addresses = 1;
1419           break;
1420         case OPTION_NO_CHECK_SECTIONS:
1421           command_line.check_section_addresses = 0;
1422           break;
1423         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1424           command_line.accept_unknown_input_arch = TRUE;
1425           break;
1426         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1427           command_line.accept_unknown_input_arch = FALSE;
1428           break;
1429         case '(':
1430           lang_enter_group ();
1431           ingroup++;
1432           break;
1433         case ')':
1434           if (! ingroup)
1435             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1436
1437           lang_leave_group ();
1438           ingroup--;
1439           break;
1440
1441         case OPTION_INIT:
1442           link_info.init_function = optarg;
1443           break;
1444
1445         case OPTION_FINI:
1446           link_info.fini_function = optarg;
1447           break;
1448
1449         case OPTION_REDUCE_MEMORY_OVERHEADS:
1450           link_info.reduce_memory_overheads = TRUE;
1451           if (config.hash_table_size == 0)
1452             config.hash_table_size = 1021;
1453           break;
1454
1455         case OPTION_HASH_SIZE:
1456           {
1457             bfd_size_type new_size;
1458
1459             new_size = strtoul (optarg, NULL, 0);
1460             if (new_size)
1461               config.hash_table_size = new_size;
1462             else
1463               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1464           }
1465           break;
1466
1467         case OPTION_PUSH_STATE:
1468           input_flags.pushed = xmemdup (&input_flags,
1469                                         sizeof (input_flags),
1470                                         sizeof (input_flags));
1471           break;
1472
1473         case OPTION_POP_STATE:
1474           if (input_flags.pushed == NULL)
1475             einfo (_("%P%F: no state pushed before popping\n"));
1476           else
1477             {
1478               struct lang_input_statement_flags *oldp = input_flags.pushed;
1479               memcpy (&input_flags, oldp, sizeof (input_flags));
1480               free (oldp);
1481             }
1482           break;
1483         }
1484     }
1485
1486   if (command_line.soname && command_line.soname[0] == '\0')
1487     {
1488       einfo (_("%P: SONAME must not be empty string; ignored\n"));
1489       command_line.soname = NULL;
1490     }
1491
1492   while (ingroup)
1493     {
1494       lang_leave_group ();
1495       ingroup--;
1496     }
1497
1498   if (default_dirlist != NULL)
1499     {
1500       set_default_dirlist (default_dirlist);
1501       free (default_dirlist);
1502     }
1503
1504   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1505     /* FIXME: Should we allow emulations a chance to set this ?  */
1506     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1507
1508   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1509     /* FIXME: Should we allow emulations a chance to set this ?  */
1510     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1511
1512   if (link_info.relocatable)
1513     {
1514       if (command_line.check_section_addresses < 0)
1515         command_line.check_section_addresses = 0;
1516       if (link_info.shared)
1517         einfo (_("%P%F: -r and -shared may not be used together\n"));
1518     }
1519
1520   /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1521      --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1522      --dynamic-list FILE.  -Bsymbolic and -Bsymbolic-functions are
1523      for shared libraries.  -Bsymbolic overrides all others and vice
1524      versa.  */
1525   switch (command_line.symbolic)
1526     {
1527     case symbolic_unset:
1528       break;
1529     case symbolic:
1530       /* -Bsymbolic is for shared library only.  */
1531       if (link_info.shared)
1532         {
1533           link_info.symbolic = TRUE;
1534           /* Should we free the unused memory?  */
1535           link_info.dynamic_list = NULL;
1536           command_line.dynamic_list = dynamic_list_unset;
1537         }
1538       break;
1539     case symbolic_functions:
1540       /* -Bsymbolic-functions is for shared library only.  */
1541       if (link_info.shared)
1542         command_line.dynamic_list = dynamic_list_data;
1543       break;
1544     }
1545
1546   switch (command_line.dynamic_list)
1547     {
1548     case dynamic_list_unset:
1549       break;
1550     case dynamic_list_data:
1551       link_info.dynamic_data = TRUE;
1552     case dynamic_list:
1553       link_info.dynamic = TRUE;
1554       break;
1555     }
1556
1557   if (! link_info.shared)
1558     {
1559       if (command_line.filter_shlib)
1560         einfo (_("%P%F: -F may not be used without -shared\n"));
1561       if (command_line.auxiliary_filters)
1562         einfo (_("%P%F: -f may not be used without -shared\n"));
1563     }
1564
1565   if (! link_info.shared || link_info.pie)
1566     link_info.executable = TRUE;
1567
1568   /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols).  I
1569      don't see how else this can be handled, since in this case we
1570      must preserve all externally visible symbols.  */
1571   if (link_info.relocatable && link_info.strip == strip_all)
1572     {
1573       link_info.strip = strip_debugger;
1574       if (link_info.discard == discard_sec_merge)
1575         link_info.discard = discard_all;
1576     }
1577 }
1578
1579 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1580    library search path.  */
1581
1582 static void
1583 set_default_dirlist (char *dirlist_ptr)
1584 {
1585   char *p;
1586
1587   while (1)
1588     {
1589       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1590       if (p != NULL)
1591         *p = '\0';
1592       if (*dirlist_ptr != '\0')
1593         ldfile_add_library_path (dirlist_ptr, TRUE);
1594       if (p == NULL)
1595         break;
1596       dirlist_ptr = p + 1;
1597     }
1598 }
1599
1600 static void
1601 set_section_start (char *sect, char *valstr)
1602 {
1603   const char *end;
1604   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1605   if (*end)
1606     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1607   lang_section_start (sect, exp_intop (val), NULL);
1608 }
1609
1610 static void
1611 set_segment_start (const char *section, char *valstr)
1612 {
1613   const char *name;
1614   const char *end;
1615   segment_type *seg;
1616
1617   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1618   if (*end)
1619     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1620   /* If we already have an entry for this segment, update the existing
1621      value.  */
1622   name = section + 1;
1623   for (seg = segments; seg; seg = seg->next)
1624     if (strcmp (seg->name, name) == 0)
1625       {
1626         seg->value = val;
1627         return;
1628       }
1629   /* There was no existing value so we must create a new segment
1630      entry.  */
1631   seg = (segment_type *) stat_alloc (sizeof (*seg));
1632   seg->name = name;
1633   seg->value = val;
1634   seg->used = FALSE;
1635   /* Add it to the linked list of segments.  */
1636   seg->next = segments;
1637   segments = seg;
1638   /* Historically, -Ttext and friends set the base address of a
1639      particular section.  For backwards compatibility, we still do
1640      that.  If a SEGMENT_START directive is seen, the section address
1641      assignment will be disabled.  */
1642   lang_section_start (section, exp_intop (val), seg);
1643 }
1644
1645 \f
1646 /* Print help messages for the options.  */
1647
1648 static void
1649 help (void)
1650 {
1651   unsigned i;
1652   const char **targets, **pp;
1653   int len;
1654
1655   printf (_("Usage: %s [options] file...\n"), program_name);
1656
1657   printf (_("Options:\n"));
1658   for (i = 0; i < OPTION_COUNT; i++)
1659     {
1660       if (ld_options[i].doc != NULL)
1661         {
1662           bfd_boolean comma;
1663           unsigned j;
1664
1665           printf ("  ");
1666
1667           comma = FALSE;
1668           len = 2;
1669
1670           j = i;
1671           do
1672             {
1673               if (ld_options[j].shortopt != '\0'
1674                   && ld_options[j].control != NO_HELP)
1675                 {
1676                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1677                   len += (comma ? 2 : 0) + 2;
1678                   if (ld_options[j].arg != NULL)
1679                     {
1680                       if (ld_options[j].opt.has_arg != optional_argument)
1681                         {
1682                           printf (" ");
1683                           ++len;
1684                         }
1685                       printf ("%s", _(ld_options[j].arg));
1686                       len += strlen (_(ld_options[j].arg));
1687                     }
1688                   comma = TRUE;
1689                 }
1690               ++j;
1691             }
1692           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1693
1694           j = i;
1695           do
1696             {
1697               if (ld_options[j].opt.name != NULL
1698                   && ld_options[j].control != NO_HELP)
1699                 {
1700                   int two_dashes =
1701                     (ld_options[j].control == TWO_DASHES
1702                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1703
1704                   printf ("%s-%s%s",
1705                           comma ? ", " : "",
1706                           two_dashes ? "-" : "",
1707                           ld_options[j].opt.name);
1708                   len += ((comma ? 2 : 0)
1709                           + 1
1710                           + (two_dashes ? 1 : 0)
1711                           + strlen (ld_options[j].opt.name));
1712                   if (ld_options[j].arg != NULL)
1713                     {
1714                       printf (" %s", _(ld_options[j].arg));
1715                       len += 1 + strlen (_(ld_options[j].arg));
1716                     }
1717                   comma = TRUE;
1718                 }
1719               ++j;
1720             }
1721           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1722
1723           if (len >= 30)
1724             {
1725               printf ("\n");
1726               len = 0;
1727             }
1728
1729           for (; len < 30; len++)
1730             putchar (' ');
1731
1732           printf ("%s\n", _(ld_options[i].doc));
1733         }
1734     }
1735   printf (_("  @FILE"));
1736   for (len = strlen ("  @FILE"); len < 30; len++)
1737     putchar (' ');
1738   printf (_("Read options from FILE\n"));
1739
1740   /* Note: Various tools (such as libtool) depend upon the
1741      format of the listings below - do not change them.  */
1742   /* xgettext:c-format */
1743   printf (_("%s: supported targets:"), program_name);
1744   targets = bfd_target_list ();
1745   for (pp = targets; *pp != NULL; pp++)
1746     printf (" %s", *pp);
1747   free (targets);
1748   printf ("\n");
1749
1750   /* xgettext:c-format */
1751   printf (_("%s: supported emulations: "), program_name);
1752   ldemul_list_emulations (stdout);
1753   printf ("\n");
1754
1755   /* xgettext:c-format */
1756   printf (_("%s: emulation specific options:\n"), program_name);
1757   ldemul_list_emulation_options (stdout);
1758   printf ("\n");
1759
1760   if (REPORT_BUGS_TO[0])
1761     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1762 }