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-orphan", no_argument, NULL, OPTION_WARN_ORPHAN},
 493     '\0', NULL, N_("Warn if any orphan sections are encountered"), TWO_DASHES },
 494   { {"no-warn-orphan", no_argument, NULL, OPTION_NO_WARN_ORPHAN},
 495     '\0', NULL, N_("Do not warn if orphan sections are encountered (default)"), TWO_DASHES },
 496   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 497     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 498     TWO_DASHES },
 499   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 500     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 501     TWO_DASHES },
 502   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 503     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 504     TWO_DASHES },
 505   { {"warn-unresolved-symbols", no_argument, NULL,
 506      OPTION_WARN_UNRESOLVED_SYMBOLS},
 507     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 508   { {"error-unresolved-symbols", no_argument, NULL,
 509      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 510     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 511   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 512     '\0', NULL, N_("Include all objects from following archives"),
 513     TWO_DASHES },
 514   { {"wrap", required_argument, NULL, OPTION_WRAP},
 515     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 516   { {"ignore-unresolved-symbol", required_argument, NULL,
 517     OPTION_IGNORE_UNRESOLVED_SYMBOL},
 518     '\0', N_("SYMBOL"),
 519     N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
 520   { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
 521     '\0', NULL, N_("Push state of flags governing input file handling"),
 522     TWO_DASHES },
 523   { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
 524     '\0', NULL, N_("Pop state of flags governing input file handling"),
 525     TWO_DASHES },
 526 };
 527
 528 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 529
 530 void
 531 parse_args (unsigned argc, char **argv)
 532 {
 533   unsigned i;
 534   int is, il, irl;
 535   int ingroup = 0;
 536   char *default_dirlist = NULL;
 537   char *shortopts;
 538   struct option *longopts;
 539   struct option *really_longopts;
 540   int last_optind;
 541   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 542
 543   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 544   longopts = (struct option *)
 545       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 546   really_longopts = (struct option *)
 547       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 548
 549   /* Starting the short option string with '-' is for programs that
 550      expect options and other ARGV-elements in any order and that care about
 551      the ordering of the two.  We describe each non-option ARGV-element
 552      as if it were the argument of an option with character code 1.  */
 553   shortopts[0] = '-';
 554   is = 1;
 555   il = 0;
 556   irl = 0;
 557   for (i = 0; i < OPTION_COUNT; i++)
 558     {
 559       if (ld_options[i].shortopt != '\0')
 560         {
 561           shortopts[is] = ld_options[i].shortopt;
 562           ++is;
 563           if (ld_options[i].opt.has_arg == required_argument
 564               || ld_options[i].opt.has_arg == optional_argument)
 565             {
 566               shortopts[is] = ':';
 567               ++is;
 568               if (ld_options[i].opt.has_arg == optional_argument)
 569                 {
 570                   shortopts[is] = ':';
 571                   ++is;
 572                 }
 573             }
 574         }
 575       if (ld_options[i].opt.name != NULL)
 576         {
 577           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 578             {
 579               really_longopts[irl] = ld_options[i].opt;
 580               ++irl;
 581             }
 582           else
 583             {
 584               longopts[il] = ld_options[i].opt;
 585               ++il;
 586             }
 587         }
 588     }
 589   shortopts[is] = '\0';
 590   longopts[il].name = NULL;
 591   really_longopts[irl].name = NULL;
 592
 593   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 594
 595   /* The -G option is ambiguous on different platforms.  Sometimes it
 596      specifies the largest data size to put into the small data
 597      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 598      the first form takes an argument, while the second does not.
 599
 600      We need to permit the --shared form because on some platforms,
 601      such as Solaris, gcc -shared will pass -G to the linker.
 602
 603      To permit either usage, we look through the argument list.  If we
 604      find -G not followed by a number, we change it into --shared.
 605      This will work for most normal cases.  */
 606   for (i = 1; i < argc; i++)
 607     if (strcmp (argv[i], "-G") == 0
 608         && (i + 1 >= argc
 609             || ! ISDIGIT (argv[i + 1][0])))
 610       argv[i] = (char *) "--shared";
 611
 612   /* Because we permit long options to start with a single dash, and
 613      we have a --library option, and the -l option is conventionally
 614      used with an immediately following argument, we can have bad
 615      results if somebody tries to use -l with a library whose name
 616      happens to start with "ibrary", as in -li.  We avoid problems by
 617      simply turning -l into --library.  This means that users will
 618      have to use two dashes in order to use --library, which is OK
 619      since that's how it is documented.
 620
 621      FIXME: It's possible that this problem can arise for other short
 622      options as well, although the user does always have the recourse
 623      of adding a space between the option and the argument.  */
 624   for (i = 1; i < argc; i++)
 625     {
 626       if (argv[i][0] == '-'
 627           && argv[i][1] == 'l'
 628           && argv[i][2] != '\0')
 629         {
 630           char *n;
 631
 632           n = (char *) xmalloc (strlen (argv[i]) + 20);
 633           sprintf (n, "--library=%s", argv[i] + 2);
 634           argv[i] = n;
 635         }
 636     }
 637
 638   last_optind = -1;
 639   while (1)
 640     {
 641       int longind;
 642       int optc;
 643       static unsigned int defsym_count;
 644
 645       /* Using last_optind lets us avoid calling ldemul_parse_args
 646          multiple times on a single option, which would lead to
 647          confusion in the internal static variables maintained by
 648          getopt.  This could otherwise happen for an argument like
 649          -nx, in which the -n is parsed as a single option, and we
 650          loop around to pick up the -x.  */
 651       if (optind != last_optind)
 652         if (ldemul_parse_args (argc, argv))
 653           continue;
 654
 655       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 656          can indicate a long option.  */
 657       opterr = 0;
 658       last_optind = optind;
 659       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 660       if (optc == '?')
 661         {
 662           optind = last_optind;
 663           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 664         }
 665
 666       if (ldemul_handle_option (optc))
 667         continue;
 668
 669       if (optc == -1)
 670         break;
 671
 672       switch (optc)
 673         {
 674         case '?':
 675           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 676           /* Fall through.  */
 677
 678         default:
 679           einfo (_("%P%F: use the --help option for usage information\n"));
 680
 681         case 1:                 /* File name.  */
 682           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 683           break;
 684
 685         case OPTION_IGNORE:
 686           break;
 687         case 'a':
 688           /* For HP/UX compatibility.  Actually -a shared should mean
 689              ``use only shared libraries'' but, then, we don't
 690              currently support shared libraries on HP/UX anyhow.  */
 691           if (strcmp (optarg, "archive") == 0)
 692             input_flags.dynamic = FALSE;
 693           else if (strcmp (optarg, "shared") == 0
 694                    || strcmp (optarg, "default") == 0)
 695             input_flags.dynamic = TRUE;
 696           else
 697             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 698           break;
 699         case OPTION_ASSERT:
 700           /* FIXME: We just ignore these, but we should handle them.  */
 701           if (strcmp (optarg, "definitions") == 0)
 702             ;
 703           else if (strcmp (optarg, "nodefinitions") == 0)
 704             ;
 705           else if (strcmp (optarg, "nosymbolic") == 0)
 706             ;
 707           else if (strcmp (optarg, "pure-text") == 0)
 708             ;
 709           else
 710             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 711           break;
 712         case 'A':
 713           ldfile_add_arch (optarg);
 714           break;
 715         case 'b':
 716           lang_add_target (optarg);
 717           break;
 718         case 'c':
 719           ldfile_open_command_file (optarg);
 720           parser_input = input_mri_script;
 721           yyparse ();
 722           break;
 723         case OPTION_CALL_SHARED:
 724           input_flags.dynamic = TRUE;
 725           break;
 726         case OPTION_NON_SHARED:
 727           input_flags.dynamic = FALSE;
 728           break;
 729         case OPTION_CREF:
 730           command_line.cref = TRUE;
 731           link_info.notice_all = TRUE;
 732           break;
 733         case 'd':
 734           command_line.force_common_definition = TRUE;
 735           break;
 736         case OPTION_DEFSYM:
 737           lex_string = optarg;
 738           lex_redirect (optarg, "--defsym", ++defsym_count);
 739           parser_input = input_defsym;
 740           yyparse ();
 741           lex_string = NULL;
 742           break;
 743         case OPTION_DEMANGLE:
 744           demangling = TRUE;
 745           if (optarg != NULL)
 746             {
 747               enum demangling_styles style;
 748
 749               style = cplus_demangle_name_to_style (optarg);
 750               if (style == unknown_demangling)
 751                 einfo (_("%F%P: unknown demangling style `%s'\n"),
 752                        optarg);
 753
 754               cplus_demangle_set_style (style);
 755             }
 756           break;
 757         case 'I':               /* Used on Solaris.  */
 758         case OPTION_DYNAMIC_LINKER:
 759           command_line.interpreter = optarg;
 760           break;
 761         case OPTION_SYSROOT:
 762           /* Already handled in ldmain.c.  */
 763           break;
 764         case OPTION_EB:
 765           command_line.endian = ENDIAN_BIG;
 766           break;
 767         case OPTION_EL:
 768           command_line.endian = ENDIAN_LITTLE;
 769           break;
 770         case OPTION_EMBEDDED_RELOCS:
 771           command_line.embedded_relocs = TRUE;
 772           break;
 773         case OPTION_EXPORT_DYNAMIC:
 774         case 'E': /* HP/UX compatibility.  */
 775           link_info.export_dynamic = TRUE;
 776           break;
 777         case OPTION_NO_EXPORT_DYNAMIC:
 778           link_info.export_dynamic = FALSE;
 779           break;
 780         case 'e':
 781           lang_add_entry (optarg, TRUE);
 782           break;
 783         case 'f':
 784           if (command_line.auxiliary_filters == NULL)
 785             {
 786               command_line.auxiliary_filters = (char **)
 787                   xmalloc (2 * sizeof (char *));
 788               command_line.auxiliary_filters[0] = optarg;
 789               command_line.auxiliary_filters[1] = NULL;
 790             }
 791           else
 792             {
 793               int c;
 794               char **p;
 795
 796               c = 0;
 797               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 798                 ++c;
 799               command_line.auxiliary_filters = (char **)
 800                   xrealloc (command_line.auxiliary_filters,
 801                             (c + 2) * sizeof (char *));
 802               command_line.auxiliary_filters[c] = optarg;
 803               command_line.auxiliary_filters[c + 1] = NULL;
 804             }
 805           break;
 806         case 'F':
 807           command_line.filter_shlib = optarg;
 808           break;
 809         case OPTION_FORCE_EXE_SUFFIX:
 810           command_line.force_exe_suffix = TRUE;
 811           break;
 812         case 'G':
 813           {
 814             char *end;
 815             g_switch_value = strtoul (optarg, &end, 0);
 816             if (*end)
 817               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 818           }
 819           break;
 820         case 'g':
 821           /* Ignore.  */
 822           break;
 823         case OPTION_GC_SECTIONS:
 824           link_info.gc_sections = TRUE;
 825           break;
 826         case OPTION_PRINT_GC_SECTIONS:
 827           link_info.print_gc_sections = TRUE;
 828           break;
 829         case OPTION_HELP:
 830           help ();
 831           xexit (0);
 832           break;
 833         case 'L':
 834           ldfile_add_library_path (optarg, TRUE);
 835           break;
 836         case 'l':
 837           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 838           break;
 839         case 'M':
 840           config.map_filename = "-";
 841           break;
 842         case 'm':
 843           /* Ignore.  Was handled in a pre-parse.   */
 844           break;
 845         case OPTION_MAP:
 846           config.map_filename = optarg;
 847           break;
 848         case 'N':
 849           config.text_read_only = FALSE;
 850           config.magic_demand_paged = FALSE;
 851           input_flags.dynamic = FALSE;
 852           break;
 853         case OPTION_NO_OMAGIC:
 854           config.text_read_only = TRUE;
 855           config.magic_demand_paged = TRUE;
 856           /* NB/ Does not set input_flags.dynamic to TRUE.
 857              Use --call-shared or -Bdynamic for this.  */
 858           break;
 859         case 'n':
 860           config.magic_demand_paged = FALSE;
 861           input_flags.dynamic = FALSE;
 862           break;
 863         case OPTION_NO_DEFINE_COMMON:
 864           command_line.inhibit_common_definition = TRUE;
 865           break;
 866         case OPTION_NO_DEMANGLE:
 867           demangling = FALSE;
 868           break;
 869         case OPTION_NO_GC_SECTIONS:
 870           link_info.gc_sections = FALSE;
 871           break;
 872         case OPTION_NO_PRINT_GC_SECTIONS:
 873           link_info.print_gc_sections = FALSE;
 874           break;
 875         case OPTION_NO_KEEP_MEMORY:
 876           link_info.keep_memory = FALSE;
 877           break;
 878         case OPTION_NO_UNDEFINED:
 879           link_info.unresolved_syms_in_objects
 880             = how_to_report_unresolved_symbols;
 881           break;
 882         case OPTION_ALLOW_SHLIB_UNDEFINED:
 883           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 884           break;
 885         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 886           link_info.unresolved_syms_in_shared_libs
 887             = how_to_report_unresolved_symbols;
 888           break;
 889         case OPTION_UNRESOLVED_SYMBOLS:
 890           if (strcmp (optarg, "ignore-all") == 0)
 891             {
 892               link_info.unresolved_syms_in_objects = RM_IGNORE;
 893               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 894             }
 895           else if (strcmp (optarg, "report-all") == 0)
 896             {
 897               link_info.unresolved_syms_in_objects
 898                 = how_to_report_unresolved_symbols;
 899               link_info.unresolved_syms_in_shared_libs
 900                 = how_to_report_unresolved_symbols;
 901             }
 902           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 903             {
 904               link_info.unresolved_syms_in_objects = RM_IGNORE;
 905               link_info.unresolved_syms_in_shared_libs
 906                 = how_to_report_unresolved_symbols;
 907             }
 908           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 909             {
 910               link_info.unresolved_syms_in_objects
 911                 = how_to_report_unresolved_symbols;
 912               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 913             }
 914           else
 915             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
 916           break;
 917         case OPTION_WARN_UNRESOLVED_SYMBOLS:
 918           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
 919           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
 920             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
 921           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
 922             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
 923           break;
 924
 925         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
 926           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 927           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
 928             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
 929           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
 930             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
 931           break;
 932         case OPTION_ALLOW_MULTIPLE_DEFINITION:
 933           link_info.allow_multiple_definition = TRUE;
 934           break;
 935         case OPTION_NO_UNDEFINED_VERSION:
 936           link_info.allow_undefined_version = FALSE;
 937           break;
 938         case OPTION_DEFAULT_SYMVER:
 939           link_info.create_default_symver = TRUE;
 940           break;
 941         case OPTION_DEFAULT_IMPORTED_SYMVER:
 942           link_info.default_imported_symver = TRUE;
 943           break;
 944         case OPTION_NO_WARN_MISMATCH:
 945           command_line.warn_mismatch = FALSE;
 946           break;
 947         case OPTION_NO_WARN_SEARCH_MISMATCH:
 948           command_line.warn_search_mismatch = FALSE;
 949           break;
 950         case OPTION_NOINHIBIT_EXEC:
 951           force_make_executable = TRUE;
 952           break;
 953         case OPTION_NOSTDLIB:
 954           config.only_cmd_line_lib_dirs = TRUE;
 955           break;
 956         case OPTION_NO_WHOLE_ARCHIVE:
 957           input_flags.whole_archive = FALSE;
 958           break;
 959         case 'O':
 960           /* FIXME "-O<non-digits> <value>" used to set the address of
 961              section <non-digits>.  Was this for compatibility with
 962              something, or can we create a new option to do that
 963              (with a syntax similar to -defsym)?
 964              getopt can't handle two args to an option without kludges.  */
 965
 966           /* Enable optimizations of output files.  */
 967           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
 968           break;
 969         case 'o':
 970           lang_add_output (optarg, 0);
 971           break;
 972         case OPTION_OFORMAT:
 973           lang_add_output_format (optarg, NULL, NULL, 0);
 974           break;
 975         case OPTION_PRINT_SYSROOT:
 976           if (*ld_sysroot)
 977             puts (ld_sysroot);
 978           xexit (0);
 979           break;
 980         case OPTION_PRINT_OUTPUT_FORMAT:
 981           command_line.print_output_format = TRUE;
 982           break;
 983 #ifdef ENABLE_PLUGINS
 984         case OPTION_PLUGIN:
 985           plugin_opt_plugin (optarg);
 986           break;
 987         case OPTION_PLUGIN_OPT:
 988           if (plugin_opt_plugin_arg (optarg))
 989             einfo(_("%P%F: bad -plugin-opt option\n"));
 990           break;
 991 #endif /* ENABLE_PLUGINS */
 992         case 'q':
 993           link_info.emitrelocations = TRUE;
 994           break;
 995         case 'i':
 996         case 'r':
 997           if (optind == last_optind)
 998             /* This can happen if the user put "-rpath,a" on the command
 999                line.  (Or something similar.  The comma is important).
1000                Getopt becomes confused and thinks that this is a -r option
1001                but it cannot parse the text after the -r so it refuses to
1002                increment the optind counter.  Detect this case and issue
1003                an error message here.  We cannot just make this a warning,
1004                increment optind, and continue because getopt is too confused
1005                and will seg-fault the next time around.  */
1006             einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
1007
1008           link_info.relocatable = TRUE;
1009           config.build_constructors = FALSE;
1010           config.magic_demand_paged = FALSE;
1011           config.text_read_only = FALSE;
1012           input_flags.dynamic = FALSE;
1013           break;
1014         case 'R':
1015           /* The GNU linker traditionally uses -R to mean to include
1016              only the symbols from a file.  The Solaris linker uses -R
1017              to set the path used by the runtime linker to find
1018              libraries.  This is the GNU linker -rpath argument.  We
1019              try to support both simultaneously by checking the file
1020              named.  If it is a directory, rather than a regular file,
1021              we assume -rpath was meant.  */
1022           {
1023             struct stat s;
1024
1025             if (stat (optarg, &s) >= 0
1026                 && ! S_ISDIR (s.st_mode))
1027               {
1028                 lang_add_input_file (optarg,
1029                                      lang_input_file_is_symbols_only_enum,
1030                                      NULL);
1031                 break;
1032               }
1033           }
1034           /* Fall through.  */
1035         case OPTION_RPATH:
1036           if (command_line.rpath == NULL)
1037             command_line.rpath = xstrdup (optarg);
1038           else
1039             {
1040               size_t rpath_len = strlen (command_line.rpath);
1041               size_t optarg_len = strlen (optarg);
1042               char *buf;
1043               char *cp = command_line.rpath;
1044
1045               /* First see whether OPTARG is already in the path.  */
1046               do
1047                 {
1048                   if (strncmp (optarg, cp, optarg_len) == 0
1049                       && (cp[optarg_len] == 0
1050                           || cp[optarg_len] == config.rpath_separator))
1051                     /* We found it.  */
1052                     break;
1053
1054                   /* Not yet found.  */
1055                   cp = strchr (cp, config.rpath_separator);
1056                   if (cp != NULL)
1057                     ++cp;
1058                 }
1059               while (cp != NULL);
1060
1061               if (cp == NULL)
1062                 {
1063                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1064                   sprintf (buf, "%s%c%s", command_line.rpath,
1065                            config.rpath_separator, optarg);
1066                   free (command_line.rpath);
1067                   command_line.rpath = buf;
1068                 }
1069             }
1070           break;
1071         case OPTION_RPATH_LINK:
1072           if (command_line.rpath_link == NULL)
1073             command_line.rpath_link = xstrdup (optarg);
1074           else
1075             {
1076               char *buf;
1077
1078               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1079                                       + strlen (optarg)
1080                                       + 2);
1081               sprintf (buf, "%s%c%s", command_line.rpath_link,
1082                        config.rpath_separator, optarg);
1083               free (command_line.rpath_link);
1084               command_line.rpath_link = buf;
1085             }
1086           break;
1087         case OPTION_NO_RELAX:
1088           DISABLE_RELAXATION;
1089           break;
1090         case OPTION_RELAX:
1091           ENABLE_RELAXATION;
1092           break;
1093         case OPTION_RETAIN_SYMBOLS_FILE:
1094           add_keepsyms_file (optarg);
1095           break;
1096         case 'S':
1097           link_info.strip = strip_debugger;
1098           break;
1099         case 's':
1100           link_info.strip = strip_all;
1101           break;
1102         case OPTION_STRIP_DISCARDED:
1103           link_info.strip_discarded = TRUE;
1104           break;
1105         case OPTION_NO_STRIP_DISCARDED:
1106           link_info.strip_discarded = FALSE;
1107           break;
1108         case OPTION_SHARED:
1109           if (config.has_shared)
1110             {
1111               link_info.shared = TRUE;
1112               /* When creating a shared library, the default
1113                  behaviour is to ignore any unresolved references.  */
1114               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1115                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1116               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1117                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1118             }
1119           else
1120             einfo (_("%P%F: -shared not supported\n"));
1121           break;
1122         case OPTION_PIE:
1123           if (config.has_shared)
1124             {
1125               link_info.shared = TRUE;
1126               link_info.pie = TRUE;
1127             }
1128           else
1129             einfo (_("%P%F: -pie not supported\n"));
1130           break;
1131         case 'h':               /* Used on Solaris.  */
1132         case OPTION_SONAME:
1133           if (optarg[0] == '\0' && command_line.soname
1134               && command_line.soname[0])
1135             einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1136           else
1137             command_line.soname = optarg;
1138           break;
1139         case OPTION_SORT_COMMON:
1140           if (optarg == NULL
1141               || strcmp (optarg, N_("descending")) == 0)
1142             config.sort_common = sort_descending;
1143           else if (strcmp (optarg, N_("ascending")) == 0)
1144             config.sort_common = sort_ascending;
1145           else
1146             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1147                    optarg);
1148           break;
1149         case OPTION_SORT_SECTION:
1150           if (strcmp (optarg, N_("name")) == 0)
1151             sort_section = by_name;
1152           else if (strcmp (optarg, N_("alignment")) == 0)
1153             sort_section = by_alignment;
1154           else
1155             einfo (_("%P%F: invalid section sorting option: %s\n"),
1156                    optarg);
1157           break;
1158         case OPTION_STATS:
1159           config.stats = TRUE;
1160           break;
1161         case OPTION_SYMBOLIC:
1162           command_line.symbolic = symbolic;
1163           break;
1164         case OPTION_SYMBOLIC_FUNCTIONS:
1165           command_line.symbolic = symbolic_functions;
1166           break;
1167         case 't':
1168           trace_files = TRUE;
1169           break;
1170         case 'T':
1171           previous_script_handle = saved_script_handle;
1172           ldfile_open_command_file (optarg);
1173           parser_input = input_script;
1174           yyparse ();
1175           previous_script_handle = NULL;
1176           break;
1177         case OPTION_DEFAULT_SCRIPT:
1178           command_line.default_script = optarg;
1179           break;
1180         case OPTION_SECTION_START:
1181           {
1182             char *optarg2;
1183             char *sec_name;
1184             int len;
1185
1186             /* Check for <something>=<somthing>...  */
1187             optarg2 = strchr (optarg, '=');
1188             if (optarg2 == NULL)
1189               einfo (_("%P%F: invalid argument to option"
1190                        " \"--section-start\"\n"));
1191
1192             optarg2++;
1193
1194             /* So far so good.  Are all the args present?  */
1195             if ((*optarg == '\0') || (*optarg2 == '\0'))
1196               einfo (_("%P%F: missing argument(s) to option"
1197                        " \"--section-start\"\n"));
1198
1199             /* We must copy the section name as set_section_start
1200                doesn't do it for us.  */
1201             len = optarg2 - optarg;
1202             sec_name = (char *) xmalloc (len);
1203             memcpy (sec_name, optarg, len - 1);
1204             sec_name[len - 1] = 0;
1205
1206             /* Then set it...  */
1207             set_section_start (sec_name, optarg2);
1208           }
1209           break;
1210         case OPTION_TARGET_HELP:
1211           /* Mention any target specific options.  */
1212           ldemul_list_emulation_options (stdout);
1213           exit (0);
1214         case OPTION_TBSS:
1215           set_segment_start (".bss", optarg);
1216           break;
1217         case OPTION_TDATA:
1218           set_segment_start (".data", optarg);
1219           break;
1220         case OPTION_TTEXT:
1221           set_segment_start (".text", optarg);
1222           break;
1223         case OPTION_TTEXT_SEGMENT:
1224           set_segment_start (".text-segment", optarg);
1225           break;
1226         case OPTION_TRODATA_SEGMENT:
1227           set_segment_start (".rodata-segment", optarg);
1228           break;
1229         case OPTION_TLDATA_SEGMENT:
1230           set_segment_start (".ldata-segment", optarg);
1231           break;
1232         case OPTION_TRADITIONAL_FORMAT:
1233           link_info.traditional_format = TRUE;
1234           break;
1235         case OPTION_TASK_LINK:
1236           link_info.task_link = TRUE;
1237           /* Fall through - do an implied -r option.  */
1238         case OPTION_UR:
1239           link_info.relocatable = TRUE;
1240           config.build_constructors = TRUE;
1241           config.magic_demand_paged = FALSE;
1242           config.text_read_only = FALSE;
1243           input_flags.dynamic = FALSE;
1244           break;
1245         case 'u':
1246           ldlang_add_undef (optarg, TRUE);
1247           break;
1248         case OPTION_UNIQUE:
1249           if (optarg != NULL)
1250             lang_add_unique (optarg);
1251           else
1252             config.unique_orphan_sections = TRUE;
1253           break;
1254         case OPTION_VERBOSE:
1255           ldversion (1);
1256           version_printed = TRUE;
1257           verbose = TRUE;
1258           overflow_cutoff_limit = -2;
1259           if (optarg != NULL)
1260             {
1261               char *end;
1262               int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1263               if (*end)
1264                 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1265 #ifdef ENABLE_PLUGINS
1266               report_plugin_symbols = level > 1;
1267 #endif /* ENABLE_PLUGINS */
1268             }
1269           break;
1270         case 'v':
1271           ldversion (0);
1272           version_printed = TRUE;
1273           break;
1274         case 'V':
1275           ldversion (1);
1276           version_printed = TRUE;
1277           break;
1278         case OPTION_VERSION:
1279           ldversion (2);
1280           xexit (0);
1281           break;
1282         case OPTION_VERSION_SCRIPT:
1283           /* This option indicates a small script that only specifies
1284              version information.  Read it, but don't assume that
1285              we've seen a linker script.  */
1286           {
1287             FILE *hold_script_handle;
1288
1289             hold_script_handle = saved_script_handle;
1290             ldfile_open_command_file (optarg);
1291             saved_script_handle = hold_script_handle;
1292             parser_input = input_version_script;
1293             yyparse ();
1294           }
1295           break;
1296         case OPTION_VERSION_EXPORTS_SECTION:
1297           /* This option records a version symbol to be applied to the
1298              symbols listed for export to be found in the object files
1299              .exports sections.  */
1300           command_line.version_exports_section = optarg;
1301           break;
1302         case OPTION_DYNAMIC_LIST_DATA:
1303           command_line.dynamic_list = dynamic_list_data;
1304           if (command_line.symbolic == symbolic)
1305             command_line.symbolic = symbolic_unset;
1306           break;
1307         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1308           lang_append_dynamic_list_cpp_typeinfo ();
1309           if (command_line.dynamic_list != dynamic_list_data)
1310             command_line.dynamic_list = dynamic_list;
1311           if (command_line.symbolic == symbolic)
1312             command_line.symbolic = symbolic_unset;
1313           break;
1314         case OPTION_DYNAMIC_LIST_CPP_NEW:
1315           lang_append_dynamic_list_cpp_new ();
1316           if (command_line.dynamic_list != dynamic_list_data)
1317             command_line.dynamic_list = dynamic_list;
1318           if (command_line.symbolic == symbolic)
1319             command_line.symbolic = symbolic_unset;
1320           break;
1321         case OPTION_DYNAMIC_LIST:
1322           /* This option indicates a small script that only specifies
1323              a dynamic list.  Read it, but don't assume that we've
1324              seen a linker script.  */
1325           {
1326             FILE *hold_script_handle;
1327
1328             hold_script_handle = saved_script_handle;
1329             ldfile_open_command_file (optarg);
1330             saved_script_handle = hold_script_handle;
1331             parser_input = input_dynamic_list;
1332             yyparse ();
1333           }
1334           if (command_line.dynamic_list != dynamic_list_data)
1335             command_line.dynamic_list = dynamic_list;
1336           if (command_line.symbolic == symbolic)
1337             command_line.symbolic = symbolic_unset;
1338           break;
1339         case OPTION_WARN_COMMON:
1340           config.warn_common = TRUE;
1341           break;
1342         case OPTION_WARN_CONSTRUCTORS:
1343           config.warn_constructors = TRUE;
1344           break;
1345         case OPTION_WARN_FATAL:
1346           config.fatal_warnings = TRUE;
1347           break;
1348         case OPTION_NO_WARN_FATAL:
1349           config.fatal_warnings = FALSE;
1350           break;
1351         case OPTION_WARN_MULTIPLE_GP:
1352           config.warn_multiple_gp = TRUE;
1353           break;
1354         case OPTION_WARN_ONCE:
1355           config.warn_once = TRUE;
1356           break;
1357         case OPTION_WARN_ORPHAN:
1358           config.warn_orphan = TRUE;
1359           break;
1360         case OPTION_NO_WARN_ORPHAN:
1361           config.warn_orphan = FALSE;
1362           break;
1363         case OPTION_WARN_SECTION_ALIGN:
1364           config.warn_section_align = TRUE;
1365           break;
1366         case OPTION_WARN_SHARED_TEXTREL:
1367           link_info.warn_shared_textrel = TRUE;
1368           break;
1369         case OPTION_WARN_ALTERNATE_EM:
1370           link_info.warn_alternate_em = TRUE;
1371           break;
1372         case OPTION_WHOLE_ARCHIVE:
1373           input_flags.whole_archive = TRUE;
1374           break;
1375         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1376           input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1377           break;
1378         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1379           input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1380           break;
1381         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1382           input_flags.add_DT_NEEDED_for_regular = TRUE;
1383           break;
1384         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1385           input_flags.add_DT_NEEDED_for_regular = FALSE;
1386           break;
1387         case OPTION_WRAP:
1388           add_wrap (optarg);
1389           break;
1390         case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1391           add_ignoresym (&link_info, optarg);
1392           break;
1393         case OPTION_DISCARD_NONE:
1394           link_info.discard = discard_none;
1395           break;
1396         case 'X':
1397           link_info.discard = discard_l;
1398           break;
1399         case 'x':
1400           link_info.discard = discard_all;
1401           break;
1402         case 'Y':
1403           if (CONST_STRNEQ (optarg, "P,"))
1404             optarg += 2;
1405           if (default_dirlist != NULL)
1406             free (default_dirlist);
1407           default_dirlist = xstrdup (optarg);
1408           break;
1409         case 'y':
1410           add_ysym (optarg);
1411           break;
1412         case OPTION_SPARE_DYNAMIC_TAGS:
1413           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1414           break;
1415         case OPTION_SPLIT_BY_RELOC:
1416           if (optarg != NULL)
1417             config.split_by_reloc = strtoul (optarg, NULL, 0);
1418           else
1419             config.split_by_reloc = 32768;
1420           break;
1421         case OPTION_SPLIT_BY_FILE:
1422           if (optarg != NULL)
1423             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1424           else
1425             config.split_by_file = 1;
1426           break;
1427         case OPTION_CHECK_SECTIONS:
1428           command_line.check_section_addresses = 1;
1429           break;
1430         case OPTION_NO_CHECK_SECTIONS:
1431           command_line.check_section_addresses = 0;
1432           break;
1433         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1434           command_line.accept_unknown_input_arch = TRUE;
1435           break;
1436         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1437           command_line.accept_unknown_input_arch = FALSE;
1438           break;
1439         case '(':
1440           lang_enter_group ();
1441           ingroup++;
1442           break;
1443         case ')':
1444           if (! ingroup)
1445             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1446
1447           lang_leave_group ();
1448           ingroup--;
1449           break;
1450
1451         case OPTION_INIT:
1452           link_info.init_function = optarg;
1453           break;
1454
1455         case OPTION_FINI:
1456           link_info.fini_function = optarg;
1457           break;
1458
1459         case OPTION_REDUCE_MEMORY_OVERHEADS:
1460           link_info.reduce_memory_overheads = TRUE;
1461           if (config.hash_table_size == 0)
1462             config.hash_table_size = 1021;
1463           break;
1464
1465         case OPTION_HASH_SIZE:
1466           {
1467             bfd_size_type new_size;
1468
1469             new_size = strtoul (optarg, NULL, 0);
1470             if (new_size)
1471               config.hash_table_size = new_size;
1472             else
1473               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1474           }
1475           break;
1476
1477         case OPTION_PUSH_STATE:
1478           input_flags.pushed = xmemdup (&input_flags,
1479                                         sizeof (input_flags),
1480                                         sizeof (input_flags));
1481           break;
1482
1483         case OPTION_POP_STATE:
1484           if (input_flags.pushed == NULL)
1485             einfo (_("%P%F: no state pushed before popping\n"));
1486           else
1487             {
1488               struct lang_input_statement_flags *oldp = input_flags.pushed;
1489               memcpy (&input_flags, oldp, sizeof (input_flags));
1490               free (oldp);
1491             }
1492           break;
1493         }
1494     }
1495
1496   if (command_line.soname && command_line.soname[0] == '\0')
1497     {
1498       einfo (_("%P: SONAME must not be empty string; ignored\n"));
1499       command_line.soname = NULL;
1500     }
1501
1502   while (ingroup)
1503     {
1504       lang_leave_group ();
1505       ingroup--;
1506     }
1507
1508   if (default_dirlist != NULL)
1509     {
1510       set_default_dirlist (default_dirlist);
1511       free (default_dirlist);
1512     }
1513
1514   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1515     /* FIXME: Should we allow emulations a chance to set this ?  */
1516     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1517
1518   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1519     /* FIXME: Should we allow emulations a chance to set this ?  */
1520     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1521
1522   if (link_info.relocatable)
1523     {
1524       if (command_line.check_section_addresses < 0)
1525         command_line.check_section_addresses = 0;
1526       if (link_info.shared)
1527         einfo (_("%P%F: -r and -shared may not be used together\n"));
1528     }
1529
1530   /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1531      --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1532      --dynamic-list FILE.  -Bsymbolic and -Bsymbolic-functions are
1533      for shared libraries.  -Bsymbolic overrides all others and vice
1534      versa.  */
1535   switch (command_line.symbolic)
1536     {
1537     case symbolic_unset:
1538       break;
1539     case symbolic:
1540       /* -Bsymbolic is for shared library only.  */
1541       if (link_info.shared)
1542         {
1543           link_info.symbolic = TRUE;
1544           /* Should we free the unused memory?  */
1545           link_info.dynamic_list = NULL;
1546           command_line.dynamic_list = dynamic_list_unset;
1547         }
1548       break;
1549     case symbolic_functions:
1550       /* -Bsymbolic-functions is for shared library only.  */
1551       if (link_info.shared)
1552         command_line.dynamic_list = dynamic_list_data;
1553       break;
1554     }
1555
1556   switch (command_line.dynamic_list)
1557     {
1558     case dynamic_list_unset:
1559       break;
1560     case dynamic_list_data:
1561       link_info.dynamic_data = TRUE;
1562     case dynamic_list:
1563       link_info.dynamic = TRUE;
1564       break;
1565     }
1566
1567   if (! link_info.shared)
1568     {
1569       if (command_line.filter_shlib)
1570         einfo (_("%P%F: -F may not be used without -shared\n"));
1571       if (command_line.auxiliary_filters)
1572         einfo (_("%P%F: -f may not be used without -shared\n"));
1573     }
1574
1575   if (! link_info.shared || link_info.pie)
1576     link_info.executable = TRUE;
1577
1578   /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols).  I
1579      don't see how else this can be handled, since in this case we
1580      must preserve all externally visible symbols.  */
1581   if (link_info.relocatable && link_info.strip == strip_all)
1582     {
1583       link_info.strip = strip_debugger;
1584       if (link_info.discard == discard_sec_merge)
1585         link_info.discard = discard_all;
1586     }
1587 }
1588
1589 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1590    library search path.  */
1591
1592 static void
1593 set_default_dirlist (char *dirlist_ptr)
1594 {
1595   char *p;
1596
1597   while (1)
1598     {
1599       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1600       if (p != NULL)
1601         *p = '\0';
1602       if (*dirlist_ptr != '\0')
1603         ldfile_add_library_path (dirlist_ptr, TRUE);
1604       if (p == NULL)
1605         break;
1606       dirlist_ptr = p + 1;
1607     }
1608 }
1609
1610 static void
1611 set_section_start (char *sect, char *valstr)
1612 {
1613   const char *end;
1614   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1615   if (*end)
1616     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1617   lang_section_start (sect, exp_intop (val), NULL);
1618 }
1619
1620 static void
1621 set_segment_start (const char *section, char *valstr)
1622 {
1623   const char *name;
1624   const char *end;
1625   segment_type *seg;
1626
1627   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1628   if (*end)
1629     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1630   /* If we already have an entry for this segment, update the existing
1631      value.  */
1632   name = section + 1;
1633   for (seg = segments; seg; seg = seg->next)
1634     if (strcmp (seg->name, name) == 0)
1635       {
1636         seg->value = val;
1637         return;
1638       }
1639   /* There was no existing value so we must create a new segment
1640      entry.  */
1641   seg = (segment_type *) stat_alloc (sizeof (*seg));
1642   seg->name = name;
1643   seg->value = val;
1644   seg->used = FALSE;
1645   /* Add it to the linked list of segments.  */
1646   seg->next = segments;
1647   segments = seg;
1648   /* Historically, -Ttext and friends set the base address of a
1649      particular section.  For backwards compatibility, we still do
1650      that.  If a SEGMENT_START directive is seen, the section address
1651      assignment will be disabled.  */
1652   lang_section_start (section, exp_intop (val), seg);
1653 }
1654
1655 static void
1656 elf_shlib_list_options (FILE *file)
1657 {
1658   fprintf (file, _("\
1659   --audit=AUDITLIB            Specify a library to use for auditing\n"));
1660   fprintf (file, _("\
1661   -Bgroup                     Selects group name lookup rules for DSO\n"));
1662   fprintf (file, _("\
1663   --disable-new-dtags         Disable new dynamic tags\n"));
1664   fprintf (file, _("\
1665   --enable-new-dtags          Enable new dynamic tags\n"));
1666   fprintf (file, _("\
1667   --eh-frame-hdr              Create .eh_frame_hdr section\n"));
1668   fprintf (file, _("\
1669   --exclude-libs=LIBS         Make all symbols in LIBS hidden\n"));
1670   fprintf (file, _("\
1671   --hash-style=STYLE          Set hash style to sysv, gnu or both\n"));
1672   fprintf (file, _("\
1673   -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1674                               Specify a library to use for auditing dependencies\n"));
1675   fprintf (file, _("\
1676   -z combreloc                Merge dynamic relocs into one section and sort\n"));
1677   fprintf (file, _("\
1678   -z nocombreloc              Don't merge dynamic relocs into one section\n"));
1679   fprintf (file, _("\
1680   -z global                   Make symbols in DSO available for subsequently\n\
1681                                loaded objects\n"));
1682   fprintf (file, _("\
1683   -z initfirst                Mark DSO to be initialized first at runtime\n"));
1684   fprintf (file, _("\
1685   -z interpose                Mark object to interpose all DSOs but executable\n"));
1686   fprintf (file, _("\
1687   -z lazy                     Mark object lazy runtime binding (default)\n"));
1688   fprintf (file, _("\
1689   -z loadfltr                 Mark object requiring immediate process\n"));
1690   fprintf (file, _("\
1691   -z nocopyreloc              Don't create copy relocs\n"));
1692   fprintf (file, _("\
1693   -z nodefaultlib             Mark object not to use default search paths\n"));
1694   fprintf (file, _("\
1695   -z nodelete                 Mark DSO non-deletable at runtime\n"));
1696   fprintf (file, _("\
1697   -z nodlopen                 Mark DSO not available to dlopen\n"));
1698   fprintf (file, _("\
1699   -z nodump                   Mark DSO not available to dldump\n"));
1700   fprintf (file, _("\
1701   -z now                      Mark object non-lazy runtime binding\n"));
1702   fprintf (file, _("\
1703   -z origin                   Mark object requiring immediate $ORIGIN\n\
1704                                 processing at runtime\n"));
1705   fprintf (file, _("\
1706   -z relro                    Create RELRO program header\n"));
1707   fprintf (file, _("\
1708   -z norelro                  Don't create RELRO program header\n"));
1709   fprintf (file, _("\
1710   -z stacksize=SIZE           Set size of stack segment\n"));
1711   fprintf (file, _("\
1712   -z text                     Treat DT_TEXTREL in shared object as error\n"));
1713   fprintf (file, _("\
1714   -z notext                   Don't treat DT_TEXTREL in shared object as error\n"));
1715   fprintf (file, _("\
1716   -z textoff                  Don't treat DT_TEXTREL in shared object as error\n"));
1717 }
1718
1719 static void
1720 elf_static_list_options (FILE *file)
1721 {
1722   fprintf (file, _("\
1723   --build-id[=STYLE]          Generate build ID note\n"));
1724   fprintf (file, _("\
1725   -z common-page-size=SIZE    Set common page size to SIZE\n"));
1726   fprintf (file, _("\
1727   -z max-page-size=SIZE       Set maximum page size to SIZE\n"));
1728   fprintf (file, _("\
1729   -z defs                     Report unresolved symbols in object files.\n"));
1730   fprintf (file, _("\
1731   -z muldefs                  Allow multiple definitions\n"));
1732   fprintf (file, _("\
1733   -z execstack                Mark executable as requiring executable stack\n"));
1734   fprintf (file, _("\
1735   -z noexecstack              Mark executable as not requiring executable stack\n"));
1736 }
1737
1738 static void
1739 elf_plt_unwind_list_options (FILE *file)
1740 {
1741   fprintf (file, _("\
1742   --ld-generated-unwind-info  Generate exception handling info for PLT\n\
1743   --no-ld-generated-unwind-info\n\
1744                               Don't generate exception handling info for PLT\n"));
1745 }
1746
1747 static void
1748 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1749                  bfd_boolean plt_unwind)
1750 {
1751   if (!elf)
1752     return;
1753   printf (_("ELF emulations:\n"));
1754   if (plt_unwind)
1755     elf_plt_unwind_list_options (file);
1756   elf_static_list_options (file);
1757   if (shlib)
1758     elf_shlib_list_options (file);
1759 }
1760
1761 \f
1762 /* Print help messages for the options.  */
1763
1764 static void
1765 help (void)
1766 {
1767   unsigned i;
1768   const char **targets, **pp;
1769   int len;
1770
1771   printf (_("Usage: %s [options] file...\n"), program_name);
1772
1773   printf (_("Options:\n"));
1774   for (i = 0; i < OPTION_COUNT; i++)
1775     {
1776       if (ld_options[i].doc != NULL)
1777         {
1778           bfd_boolean comma;
1779           unsigned j;
1780
1781           printf ("  ");
1782
1783           comma = FALSE;
1784           len = 2;
1785
1786           j = i;
1787           do
1788             {
1789               if (ld_options[j].shortopt != '\0'
1790                   && ld_options[j].control != NO_HELP)
1791                 {
1792                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1793                   len += (comma ? 2 : 0) + 2;
1794                   if (ld_options[j].arg != NULL)
1795                     {
1796                       if (ld_options[j].opt.has_arg != optional_argument)
1797                         {
1798                           printf (" ");
1799                           ++len;
1800                         }
1801                       printf ("%s", _(ld_options[j].arg));
1802                       len += strlen (_(ld_options[j].arg));
1803                     }
1804                   comma = TRUE;
1805                 }
1806               ++j;
1807             }
1808           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1809
1810           j = i;
1811           do
1812             {
1813               if (ld_options[j].opt.name != NULL
1814                   && ld_options[j].control != NO_HELP)
1815                 {
1816                   int two_dashes =
1817                     (ld_options[j].control == TWO_DASHES
1818                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1819
1820                   printf ("%s-%s%s",
1821                           comma ? ", " : "",
1822                           two_dashes ? "-" : "",
1823                           ld_options[j].opt.name);
1824                   len += ((comma ? 2 : 0)
1825                           + 1
1826                           + (two_dashes ? 1 : 0)
1827                           + strlen (ld_options[j].opt.name));
1828                   if (ld_options[j].arg != NULL)
1829                     {
1830                       printf (" %s", _(ld_options[j].arg));
1831                       len += 1 + strlen (_(ld_options[j].arg));
1832                     }
1833                   comma = TRUE;
1834                 }
1835               ++j;
1836             }
1837           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1838
1839           if (len >= 30)
1840             {
1841               printf ("\n");
1842               len = 0;
1843             }
1844
1845           for (; len < 30; len++)
1846             putchar (' ');
1847
1848           printf ("%s\n", _(ld_options[i].doc));
1849         }
1850     }
1851   printf (_("  @FILE"));
1852   for (len = strlen ("  @FILE"); len < 30; len++)
1853     putchar (' ');
1854   printf (_("Read options from FILE\n"));
1855
1856   /* Note: Various tools (such as libtool) depend upon the
1857      format of the listings below - do not change them.  */
1858   /* xgettext:c-format */
1859   printf (_("%s: supported targets:"), program_name);
1860   targets = bfd_target_list ();
1861   for (pp = targets; *pp != NULL; pp++)
1862     printf (" %s", *pp);
1863   free (targets);
1864   printf ("\n");
1865
1866   /* xgettext:c-format */
1867   printf (_("%s: supported emulations: "), program_name);
1868   ldemul_list_emulations (stdout);
1869   printf ("\n");
1870
1871   /* xgettext:c-format */
1872   printf (_("%s: emulation specific options:\n"), program_name);
1873   ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
1874                    ELF_PLT_UNWIND_LIST_OPTIONS);
1875   ldemul_list_emulation_options (stdout);
1876   printf ("\n");
1877
1878   if (REPORT_BUGS_TO[0])
1879     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1880 }