ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright (C) 1991-2016 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 = 1,
  69   /* Use two dashes before long option name.  */
  70   TWO_DASHES = 2,
  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   { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
 142     '\0', NULL, N_("Produce an executable with no program interpreter header"),
 143     TWO_DASHES },
 144   { {"library", required_argument, NULL, 'l'},
 145     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 146   { {"library-path", required_argument, NULL, 'L'},
 147     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 148     TWO_DASHES },
 149   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 150     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 151   { {NULL, required_argument, NULL, '\0'},
 152     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 153   { {"print-map", no_argument, NULL, 'M'},
 154     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 155   { {"nmagic", no_argument, NULL, 'n'},
 156     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 157   { {"omagic", no_argument, NULL, 'N'},
 158     'N', NULL, N_("Do not page align data, do not make text readonly"),
 159     EXACTLY_TWO_DASHES },
 160   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 161     '\0', NULL, N_("Page align data, make text readonly"),
 162     EXACTLY_TWO_DASHES },
 163   { {"output", required_argument, NULL, 'o'},
 164     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 165   { {NULL, required_argument, NULL, '\0'},
 166     'O', NULL, N_("Optimize output file"), ONE_DASH },
 167   { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB},
 168     '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES },
 169 #ifdef ENABLE_PLUGINS
 170   { {"plugin", required_argument, NULL, OPTION_PLUGIN},
 171     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
 172   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
 173     '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
 174   { {"flto", optional_argument, NULL, OPTION_IGNORE},
 175     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 176     ONE_DASH },
 177   { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
 178     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
 179     ONE_DASH },
 180 #endif /* ENABLE_PLUGINS */
 181   { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
 182     '\0', NULL, N_("Ignored for GCC linker option compatibility"),
 183     ONE_DASH },
 184   { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
 185     '\0', NULL, N_("Ignored for gold option compatibility"),
 186     TWO_DASHES },
 187   { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
 188     '\0', NULL, N_("Ignored for gold option compatibility"),
 189     TWO_DASHES },
 190   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 191     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 192   { {"emit-relocs", no_argument, NULL, 'q'},
 193     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 194   { {"relocatable", no_argument, NULL, 'r'},
 195     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 196   { {NULL, no_argument, NULL, '\0'},
 197     'i', NULL, NULL, ONE_DASH },
 198   { {"just-symbols", required_argument, NULL, 'R'},
 199     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 200     TWO_DASHES },
 201   { {"strip-all", no_argument, NULL, 's'},
 202     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 203   { {"strip-debug", no_argument, NULL, 'S'},
 204     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 205   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 206     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 207   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 208     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 209   { {"trace", no_argument, NULL, 't'},
 210     't', NULL, N_("Trace file opens"), TWO_DASHES },
 211   { {"script", required_argument, NULL, 'T'},
 212     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 213   { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 214     '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
 215   { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
 216     '\0', NULL, NULL, ONE_DASH },
 217   { {"undefined", required_argument, NULL, 'u'},
 218     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 219     TWO_DASHES },
 220   { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
 221     '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
 222     TWO_DASHES },
 223   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 224     '\0', N_("[=SECTION]"),
 225     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 226   { {"Ur", no_argument, NULL, OPTION_UR},
 227     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 228   { {"version", no_argument, NULL, OPTION_VERSION},
 229     'v', NULL, N_("Print version information"), TWO_DASHES },
 230   { {NULL, no_argument, NULL, '\0'},
 231     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 232   { {"discard-all", no_argument, NULL, 'x'},
 233     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 234   { {"discard-locals", no_argument, NULL, 'X'},
 235     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 236   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 237     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 238   { {"trace-symbol", required_argument, NULL, 'y'},
 239     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 240   { {NULL, required_argument, NULL, '\0'},
 241     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 242     ONE_DASH },
 243   { {"start-group", no_argument, NULL, '('},
 244     '(', NULL, N_("Start a group"), TWO_DASHES },
 245   { {"end-group", no_argument, NULL, ')'},
 246     ')', NULL, N_("End a group"), TWO_DASHES },
 247   { {"accept-unknown-input-arch", no_argument, NULL,
 248      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 249     '\0', NULL,
 250     N_("Accept input files whose architecture cannot be determined"),
 251     TWO_DASHES },
 252   { {"no-accept-unknown-input-arch", no_argument, NULL,
 253      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 254     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 255     TWO_DASHES },
 256
 257   /* The next two options are deprecated because of their similarity to
 258      --as-needed and --no-as-needed.  They have been replaced by
 259      --copy-dt-needed-entries and --no-copy-dt-needed-entries.  */
 260   { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 261     '\0', NULL, NULL, NO_HELP },
 262   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 263     '\0', NULL, NULL, NO_HELP },
 264
 265   { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
 266     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 267     TWO_DASHES },
 268   { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
 269     '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
 270                    "                                the command line"),
 271     TWO_DASHES },
 272   { {"assert", required_argument, NULL, OPTION_ASSERT},
 273     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 274   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 275     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 276   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 277     '\0', NULL, NULL, ONE_DASH },
 278   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 279     '\0', NULL, NULL, ONE_DASH },
 280   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 281     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 282   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 283     '\0', NULL, NULL, ONE_DASH },
 284   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 285     '\0', NULL, NULL, ONE_DASH },
 286   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 287     '\0', NULL, NULL, ONE_DASH },
 288   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 289     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 290   { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
 291     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 292   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 293     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 294     TWO_DASHES },
 295   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 296     '\0', NULL, N_("Do not check section addresses for overlaps"),
 297     TWO_DASHES },
 298   { {"copy-dt-needed-entries", no_argument, NULL,
 299      OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
 300     '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
 301     TWO_DASHES },
 302   { {"no-copy-dt-needed-entries", no_argument, NULL,
 303      OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
 304     '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
 305     TWO_DASHES },
 306
 307   { {"cref", no_argument, NULL, OPTION_CREF},
 308     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 309   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 310     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 311   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 312     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 313     TWO_DASHES },
 314   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 315     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 316   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 317     '\0', NULL, N_("Treat warnings as errors"),
 318     TWO_DASHES },
 319   { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
 320     '\0', NULL, N_("Do not treat warnings as errors (default)"),
 321     TWO_DASHES },
 322   { {"fini", required_argument, NULL, OPTION_FINI},
 323     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 324   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 325     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 326   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 327     '\0', NULL, N_("Remove unused sections (on some targets)"),
 328     TWO_DASHES },
 329   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 330     '\0', NULL, N_("Don't remove unused sections (default)"),
 331     TWO_DASHES },
 332   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 333     '\0', NULL, N_("List removed unused sections on stderr"),
 334     TWO_DASHES },
 335   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 336     '\0', NULL, N_("Do not list removed unused sections"),
 337     TWO_DASHES },
 338   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 339     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 340     TWO_DASHES },
 341   { {"help", no_argument, NULL, OPTION_HELP},
 342     '\0', NULL, N_("Print option help"), TWO_DASHES },
 343   { {"init", required_argument, NULL, OPTION_INIT},
 344     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 345   { {"Map", required_argument, NULL, OPTION_MAP},
 346     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 347   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 348     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 349   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 350     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 351   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 352     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 353   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 354     '\0', NULL, N_("Do not allow unresolved references in object files"),
 355     TWO_DASHES },
 356   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 357     '\0', NULL, N_("Allow unresolved references in shared libraries"),
 358     TWO_DASHES },
 359   { {"no-allow-shlib-undefined", no_argument, NULL,
 360      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 361     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 362     TWO_DASHES },
 363   { {"allow-multiple-definition", no_argument, NULL,
 364      OPTION_ALLOW_MULTIPLE_DEFINITION},
 365     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 366   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 367     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 368   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 369     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 370   { {"default-imported-symver", no_argument, NULL,
 371       OPTION_DEFAULT_IMPORTED_SYMVER},
 372     '\0', NULL, N_("Create default symbol version for imported symbols"),
 373     TWO_DASHES },
 374   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 375     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 376   { {"no-warn-search-mismatch", no_argument, NULL,
 377      OPTION_NO_WARN_SEARCH_MISMATCH},
 378     '\0', NULL, N_("Don't warn on finding an incompatible library"),
 379     TWO_DASHES},
 380   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 381     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 382   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 383     '\0', NULL, N_("Create an output file even if errors occur"),
 384     TWO_DASHES },
 385   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 386     '\0', NULL, NULL, NO_HELP },
 387   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 388     '\0', NULL, N_("Only use library directories specified on\n"
 389                    "                                the command line"),
 390     ONE_DASH },
 391   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 392     '\0', N_("TARGET"), N_("Specify target of output file"),
 393     EXACTLY_TWO_DASHES },
 394   { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
 395     '\0', NULL, N_("Print default output format"), TWO_DASHES },
 396   { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
 397     '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
 398   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 399     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 400   { {"reduce-memory-overheads", no_argument, NULL,
 401      OPTION_REDUCE_MEMORY_OVERHEADS},
 402     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 403     TWO_DASHES },
 404   { {"relax", no_argument, NULL, OPTION_RELAX},
 405     '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
 406   { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
 407     '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
 408   { {"retain-symbols-file", required_argument, NULL,
 409      OPTION_RETAIN_SYMBOLS_FILE},
 410     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 411   { {"rpath", required_argument, NULL, OPTION_RPATH},
 412     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 413   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 414     '\0', N_("PATH"), N_("Set link time shared library search path"),
 415     ONE_DASH },
 416   { {"shared", no_argument, NULL, OPTION_SHARED},
 417     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 418   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 419     '\0', NULL, NULL, ONE_DASH },
 420   { {"pie", no_argument, NULL, OPTION_PIE},
 421     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 422   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 423     '\0', NULL, NULL, TWO_DASHES },
 424   { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
 425     '\0', N_("[=ascending|descending]"),
 426     N_("Sort common symbols by alignment [in specified order]"),
 427     TWO_DASHES },
 428   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 429     '\0', NULL, NULL, NO_HELP },
 430   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 431     '\0', N_("name|alignment"),
 432     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 433   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 434     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 435     TWO_DASHES },
 436   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 437     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 438     TWO_DASHES },
 439   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 440     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 441     TWO_DASHES },
 442   { {"stats", no_argument, NULL, OPTION_STATS},
 443     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 444   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 445     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 446   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 447     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 448   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 449     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 450   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 451     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 452     TWO_DASHES },
 453   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 454     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 455   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 456     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 457   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 458     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 459   { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
 460     '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
 461   { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
 462     '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
 463   { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
 464     '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
 465   { {"unresolved-symbols=<method>", required_argument, NULL,
 466      OPTION_UNRESOLVED_SYMBOLS},
 467     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 468                    "                                ignore-all, report-all, ignore-in-object-files,\n"
 469                    "                                ignore-in-shared-libs"),
 470     TWO_DASHES },
 471   { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
 472     '\0', N_("[=NUMBER]"),
 473     N_("Output lots of information during link"), TWO_DASHES },
 474   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 475     '\0', NULL, NULL, NO_HELP },
 476   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 477     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 478   { {"version-exports-section", required_argument, NULL,
 479      OPTION_VERSION_EXPORTS_SECTION },
 480     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 481                            "                                SYMBOL as the version."),
 482     TWO_DASHES },
 483   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 484     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 485   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 486     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 487   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 488     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 489   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 490     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 491   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 492     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 493   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 494     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 495     TWO_DASHES },
 496   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 497     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 498   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 499     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 500   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 501     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 502     TWO_DASHES },
 503   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 504     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 505     TWO_DASHES },
 506   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
 507     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
 508     TWO_DASHES },
 509   { {"warn-unresolved-symbols", no_argument, NULL,
 510      OPTION_WARN_UNRESOLVED_SYMBOLS},
 511     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 512   { {"error-unresolved-symbols", no_argument, NULL,
 513      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 514     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 515   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 516     '\0', NULL, N_("Include all objects from following archives"),
 517     TWO_DASHES },
 518   { {"wrap", required_argument, NULL, OPTION_WRAP},
 519     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 520   { {"ignore-unresolved-symbol", required_argument, NULL,
 521     OPTION_IGNORE_UNRESOLVED_SYMBOL},
 522     '\0', N_("SYMBOL"),
 523     N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
 524   { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
 525     '\0', NULL, N_("Push state of flags governing input file handling"),
 526     TWO_DASHES },
 527   { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
 528     '\0', NULL, N_("Pop state of flags governing input file handling"),
 529     TWO_DASHES },
 530   { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
 531     '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
 532   { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
 533     '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
 534     TWO_DASHES },
 535 };
 536
 537 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 538
 539 void
 540 parse_args (unsigned argc, char **argv)
 541 {
 542   unsigned i;
 543   int is, il, irl;
 544   int ingroup = 0;
 545   char *default_dirlist = NULL;
 546   char *shortopts;
 547   struct option *longopts;
 548   struct option *really_longopts;
 549   int last_optind;
 550   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 551
 552   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
 553   longopts = (struct option *)
 554       xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 555   really_longopts = (struct option *)
 556       malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 557
 558   /* Starting the short option string with '-' is for programs that
 559      expect options and other ARGV-elements in any order and that care about
 560      the ordering of the two.  We describe each non-option ARGV-element
 561      as if it were the argument of an option with character code 1.  */
 562   shortopts[0] = '-';
 563   is = 1;
 564   il = 0;
 565   irl = 0;
 566   for (i = 0; i < OPTION_COUNT; i++)
 567     {
 568       if (ld_options[i].shortopt != '\0')
 569         {
 570           shortopts[is] = ld_options[i].shortopt;
 571           ++is;
 572           if (ld_options[i].opt.has_arg == required_argument
 573               || ld_options[i].opt.has_arg == optional_argument)
 574             {
 575               shortopts[is] = ':';
 576               ++is;
 577               if (ld_options[i].opt.has_arg == optional_argument)
 578                 {
 579                   shortopts[is] = ':';
 580                   ++is;
 581                 }
 582             }
 583         }
 584       if (ld_options[i].opt.name != NULL)
 585         {
 586           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 587             {
 588               really_longopts[irl] = ld_options[i].opt;
 589               ++irl;
 590             }
 591           else
 592             {
 593               longopts[il] = ld_options[i].opt;
 594               ++il;
 595             }
 596         }
 597     }
 598   shortopts[is] = '\0';
 599   longopts[il].name = NULL;
 600   really_longopts[irl].name = NULL;
 601
 602   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 603
 604   /* The -G option is ambiguous on different platforms.  Sometimes it
 605      specifies the largest data size to put into the small data
 606      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 607      the first form takes an argument, while the second does not.
 608
 609      We need to permit the --shared form because on some platforms,
 610      such as Solaris, gcc -shared will pass -G to the linker.
 611
 612      To permit either usage, we look through the argument list.  If we
 613      find -G not followed by a number, we change it into --shared.
 614      This will work for most normal cases.  */
 615   for (i = 1; i < argc; i++)
 616     if (strcmp (argv[i], "-G") == 0
 617         && (i + 1 >= argc
 618             || ! ISDIGIT (argv[i + 1][0])))
 619       argv[i] = (char *) "--shared";
 620
 621   /* Because we permit long options to start with a single dash, and
 622      we have a --library option, and the -l option is conventionally
 623      used with an immediately following argument, we can have bad
 624      results if somebody tries to use -l with a library whose name
 625      happens to start with "ibrary", as in -li.  We avoid problems by
 626      simply turning -l into --library.  This means that users will
 627      have to use two dashes in order to use --library, which is OK
 628      since that's how it is documented.
 629
 630      FIXME: It's possible that this problem can arise for other short
 631      options as well, although the user does always have the recourse
 632      of adding a space between the option and the argument.  */
 633   for (i = 1; i < argc; i++)
 634     {
 635       if (argv[i][0] == '-'
 636           && argv[i][1] == 'l'
 637           && argv[i][2] != '\0')
 638         {
 639           char *n;
 640
 641           n = (char *) xmalloc (strlen (argv[i]) + 20);
 642           sprintf (n, "--library=%s", argv[i] + 2);
 643           argv[i] = n;
 644         }
 645     }
 646
 647   last_optind = -1;
 648   while (1)
 649     {
 650       int longind;
 651       int optc;
 652       static unsigned int defsym_count;
 653
 654       /* Using last_optind lets us avoid calling ldemul_parse_args
 655          multiple times on a single option, which would lead to
 656          confusion in the internal static variables maintained by
 657          getopt.  This could otherwise happen for an argument like
 658          -nx, in which the -n is parsed as a single option, and we
 659          loop around to pick up the -x.  */
 660       if (optind != last_optind)
 661         if (ldemul_parse_args (argc, argv))
 662           continue;
 663
 664       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 665          can indicate a long option.  */
 666       opterr = 0;
 667       last_optind = optind;
 668       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 669       if (optc == '?')
 670         {
 671           optind = last_optind;
 672           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 673         }
 674
 675       if (ldemul_handle_option (optc))
 676         continue;
 677
 678       if (optc == -1)
 679         break;
 680
 681       switch (optc)
 682         {
 683         case '?':
 684           {
 685             /* If the last word on the command line is an option that
 686                requires an argument, getopt will refuse to recognise it.
 687                Try to catch such options here and issue a more helpful
 688                error message than just "unrecognized option".  */
 689             int opt;
 690
 691             for (opt = ARRAY_SIZE (ld_options); opt--;)
 692               if (ld_options[opt].opt.has_arg == required_argument
 693                   /* FIXME: There are a few short options that do not
 694                      have long equivalents, but which require arguments.
 695                      We should handle them too.  */
 696                   && ld_options[opt].opt.name != NULL
 697                   && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
 698                 {
 699                   einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
 700                   break;
 701                 }
 702
 703             if (opt == -1)
 704               einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 705           }
 706           /* Fall through.  */
 707
 708         default:
 709           einfo (_("%P%F: use the --help option for usage information\n"));
 710           break;
 711
 712         case 1:                 /* File name.  */
 713           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 714           break;
 715
 716         case OPTION_IGNORE:
 717           break;
 718         case 'a':
 719           /* For HP/UX compatibility.  Actually -a shared should mean
 720              ``use only shared libraries'' but, then, we don't
 721              currently support shared libraries on HP/UX anyhow.  */
 722           if (strcmp (optarg, "archive") == 0)
 723             input_flags.dynamic = FALSE;
 724           else if (strcmp (optarg, "shared") == 0
 725                    || strcmp (optarg, "default") == 0)
 726             input_flags.dynamic = TRUE;
 727           else
 728             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 729           break;
 730         case OPTION_ASSERT:
 731           /* FIXME: We just ignore these, but we should handle them.  */
 732           if (strcmp (optarg, "definitions") == 0)
 733             ;
 734           else if (strcmp (optarg, "nodefinitions") == 0)
 735             ;
 736           else if (strcmp (optarg, "nosymbolic") == 0)
 737             ;
 738           else if (strcmp (optarg, "pure-text") == 0)
 739             ;
 740           else
 741             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 742           break;
 743         case 'A':
 744           ldfile_add_arch (optarg);
 745           break;
 746         case 'b':
 747           lang_add_target (optarg);
 748           break;
 749         case 'c':
 750           ldfile_open_command_file (optarg);
 751           parser_input = input_mri_script;
 752           yyparse ();
 753           break;
 754         case OPTION_CALL_SHARED:
 755           input_flags.dynamic = TRUE;
 756           break;
 757         case OPTION_NON_SHARED:
 758           input_flags.dynamic = FALSE;
 759           break;
 760         case OPTION_CREF:
 761           command_line.cref = TRUE;
 762           link_info.notice_all = TRUE;
 763           break;
 764         case 'd':
 765           command_line.force_common_definition = TRUE;
 766           break;
 767         case OPTION_DEFSYM:
 768           lex_string = optarg;
 769           lex_redirect (optarg, "--defsym", ++defsym_count);
 770           parser_input = input_defsym;
 771           yyparse ();
 772           lex_string = NULL;
 773           break;
 774         case OPTION_DEMANGLE:
 775           demangling = TRUE;
 776           if (optarg != NULL)
 777             {
 778               enum demangling_styles style;
 779
 780               style = cplus_demangle_name_to_style (optarg);
 781               if (style == unknown_demangling)
 782                 einfo (_("%F%P: unknown demangling style `%s'\n"),
 783                        optarg);
 784
 785               cplus_demangle_set_style (style);
 786             }
 787           break;
 788         case 'I':               /* Used on Solaris.  */
 789         case OPTION_DYNAMIC_LINKER:
 790           command_line.interpreter = optarg;
 791           link_info.nointerp = 0;
 792           break;
 793         case OPTION_NO_DYNAMIC_LINKER:
 794           link_info.nointerp = 1;
 795           break;
 796         case OPTION_SYSROOT:
 797           /* Already handled in ldmain.c.  */
 798           break;
 799         case OPTION_EB:
 800           command_line.endian = ENDIAN_BIG;
 801           break;
 802         case OPTION_EL:
 803           command_line.endian = ENDIAN_LITTLE;
 804           break;
 805         case OPTION_EMBEDDED_RELOCS:
 806           command_line.embedded_relocs = TRUE;
 807           break;
 808         case OPTION_EXPORT_DYNAMIC:
 809         case 'E': /* HP/UX compatibility.  */
 810           link_info.export_dynamic = TRUE;
 811           break;
 812         case OPTION_NO_EXPORT_DYNAMIC:
 813           link_info.export_dynamic = FALSE;
 814           break;
 815         case 'e':
 816           lang_add_entry (optarg, TRUE);
 817           break;
 818         case 'f':
 819           if (command_line.auxiliary_filters == NULL)
 820             {
 821               command_line.auxiliary_filters = (char **)
 822                   xmalloc (2 * sizeof (char *));
 823               command_line.auxiliary_filters[0] = optarg;
 824               command_line.auxiliary_filters[1] = NULL;
 825             }
 826           else
 827             {
 828               int c;
 829               char **p;
 830
 831               c = 0;
 832               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 833                 ++c;
 834               command_line.auxiliary_filters = (char **)
 835                   xrealloc (command_line.auxiliary_filters,
 836                             (c + 2) * sizeof (char *));
 837               command_line.auxiliary_filters[c] = optarg;
 838               command_line.auxiliary_filters[c + 1] = NULL;
 839             }
 840           break;
 841         case 'F':
 842           command_line.filter_shlib = optarg;
 843           break;
 844         case OPTION_FORCE_EXE_SUFFIX:
 845           command_line.force_exe_suffix = TRUE;
 846           break;
 847         case 'G':
 848           {
 849             char *end;
 850             g_switch_value = strtoul (optarg, &end, 0);
 851             if (*end)
 852               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 853           }
 854           break;
 855         case 'g':
 856           /* Ignore.  */
 857           break;
 858         case OPTION_GC_SECTIONS:
 859           link_info.gc_sections = TRUE;
 860           break;
 861         case OPTION_PRINT_GC_SECTIONS:
 862           link_info.print_gc_sections = TRUE;
 863           break;
 864         case OPTION_HELP:
 865           help ();
 866           xexit (0);
 867           break;
 868         case 'L':
 869           ldfile_add_library_path (optarg, TRUE);
 870           break;
 871         case 'l':
 872           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 873           break;
 874         case 'M':
 875           config.map_filename = "-";
 876           break;
 877         case 'm':
 878           /* Ignore.  Was handled in a pre-parse.   */
 879           break;
 880         case OPTION_MAP:
 881           config.map_filename = optarg;
 882           break;
 883         case 'N':
 884           config.text_read_only = FALSE;
 885           config.magic_demand_paged = FALSE;
 886           input_flags.dynamic = FALSE;
 887           break;
 888         case OPTION_NO_OMAGIC:
 889           config.text_read_only = TRUE;
 890           config.magic_demand_paged = TRUE;
 891           /* NB/ Does not set input_flags.dynamic to TRUE.
 892              Use --call-shared or -Bdynamic for this.  */
 893           break;
 894         case 'n':
 895           config.magic_demand_paged = FALSE;
 896           input_flags.dynamic = FALSE;
 897           break;
 898         case OPTION_NO_DEFINE_COMMON:
 899           command_line.inhibit_common_definition = TRUE;
 900           break;
 901         case OPTION_NO_DEMANGLE:
 902           demangling = FALSE;
 903           break;
 904         case OPTION_NO_GC_SECTIONS:
 905           link_info.gc_sections = FALSE;
 906           break;
 907         case OPTION_NO_PRINT_GC_SECTIONS:
 908           link_info.print_gc_sections = FALSE;
 909           break;
 910         case OPTION_NO_KEEP_MEMORY:
 911           link_info.keep_memory = FALSE;
 912           break;
 913         case OPTION_NO_UNDEFINED:
 914           link_info.unresolved_syms_in_objects
 915             = how_to_report_unresolved_symbols;
 916           break;
 917         case OPTION_ALLOW_SHLIB_UNDEFINED:
 918           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 919           break;
 920         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 921           link_info.unresolved_syms_in_shared_libs
 922             = how_to_report_unresolved_symbols;
 923           break;
 924         case OPTION_UNRESOLVED_SYMBOLS:
 925           if (strcmp (optarg, "ignore-all") == 0)
 926             {
 927               link_info.unresolved_syms_in_objects = RM_IGNORE;
 928               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 929             }
 930           else if (strcmp (optarg, "report-all") == 0)
 931             {
 932               link_info.unresolved_syms_in_objects
 933                 = how_to_report_unresolved_symbols;
 934               link_info.unresolved_syms_in_shared_libs
 935                 = how_to_report_unresolved_symbols;
 936             }
 937           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 938             {
 939               link_info.unresolved_syms_in_objects = RM_IGNORE;
 940               link_info.unresolved_syms_in_shared_libs
 941                 = how_to_report_unresolved_symbols;
 942             }
 943           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 944             {
 945               link_info.unresolved_syms_in_objects
 946                 = how_to_report_unresolved_symbols;
 947               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 948             }
 949           else
 950             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
 951           break;
 952         case OPTION_WARN_UNRESOLVED_SYMBOLS:
 953           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
 954           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
 955             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
 956           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
 957             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
 958           break;
 959
 960         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
 961           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 962           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
 963             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
 964           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
 965             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
 966           break;
 967         case OPTION_ALLOW_MULTIPLE_DEFINITION:
 968           link_info.allow_multiple_definition = TRUE;
 969           break;
 970         case OPTION_NO_UNDEFINED_VERSION:
 971           link_info.allow_undefined_version = FALSE;
 972           break;
 973         case OPTION_DEFAULT_SYMVER:
 974           link_info.create_default_symver = TRUE;
 975           break;
 976         case OPTION_DEFAULT_IMPORTED_SYMVER:
 977           link_info.default_imported_symver = TRUE;
 978           break;
 979         case OPTION_NO_WARN_MISMATCH:
 980           command_line.warn_mismatch = FALSE;
 981           break;
 982         case OPTION_NO_WARN_SEARCH_MISMATCH:
 983           command_line.warn_search_mismatch = FALSE;
 984           break;
 985         case OPTION_NOINHIBIT_EXEC:
 986           force_make_executable = TRUE;
 987           break;
 988         case OPTION_NOSTDLIB:
 989           config.only_cmd_line_lib_dirs = TRUE;
 990           break;
 991         case OPTION_NO_WHOLE_ARCHIVE:
 992           input_flags.whole_archive = FALSE;
 993           break;
 994         case 'O':
 995           /* FIXME "-O<non-digits> <value>" used to set the address of
 996              section <non-digits>.  Was this for compatibility with
 997              something, or can we create a new option to do that
 998              (with a syntax similar to -defsym)?
 999              getopt can't handle two args to an option without kludges.  */
1000
1001           /* Enable optimizations of output files.  */
1002           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1003           break;
1004         case 'o':
1005           lang_add_output (optarg, 0);
1006           break;
1007         case OPTION_OFORMAT:
1008           lang_add_output_format (optarg, NULL, NULL, 0);
1009           break;
1010         case OPTION_OUT_IMPLIB:
1011           command_line.out_implib_filename = xstrdup (optarg);
1012           break;
1013         case OPTION_PRINT_SYSROOT:
1014           if (*ld_sysroot)
1015             puts (ld_sysroot);
1016           xexit (0);
1017           break;
1018         case OPTION_PRINT_OUTPUT_FORMAT:
1019           command_line.print_output_format = TRUE;
1020           break;
1021 #ifdef ENABLE_PLUGINS
1022         case OPTION_PLUGIN:
1023           plugin_opt_plugin (optarg);
1024           break;
1025         case OPTION_PLUGIN_OPT:
1026           if (plugin_opt_plugin_arg (optarg))
1027             einfo (_("%P%F: bad -plugin-opt option\n"));
1028           break;
1029 #endif /* ENABLE_PLUGINS */
1030         case 'q':
1031           link_info.emitrelocations = TRUE;
1032           break;
1033         case 'i':
1034         case 'r':
1035           if (optind == last_optind)
1036             /* This can happen if the user put "-rpath,a" on the command
1037                line.  (Or something similar.  The comma is important).
1038                Getopt becomes confused and thinks that this is a -r option
1039                but it cannot parse the text after the -r so it refuses to
1040                increment the optind counter.  Detect this case and issue
1041                an error message here.  We cannot just make this a warning,
1042                increment optind, and continue because getopt is too confused
1043                and will seg-fault the next time around.  */
1044             einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
1045
1046           if (bfd_link_pic (&link_info))
1047             einfo (_("%P%F: -r and %s may not be used together\n"),
1048                      bfd_link_dll (&link_info) ? "-shared" : "-pie");
1049
1050           link_info.type = type_relocatable;
1051           config.build_constructors = FALSE;
1052           config.magic_demand_paged = FALSE;
1053           config.text_read_only = FALSE;
1054           input_flags.dynamic = FALSE;
1055           break;
1056         case 'R':
1057           /* The GNU linker traditionally uses -R to mean to include
1058              only the symbols from a file.  The Solaris linker uses -R
1059              to set the path used by the runtime linker to find
1060              libraries.  This is the GNU linker -rpath argument.  We
1061              try to support both simultaneously by checking the file
1062              named.  If it is a directory, rather than a regular file,
1063              we assume -rpath was meant.  */
1064           {
1065             struct stat s;
1066
1067             if (stat (optarg, &s) >= 0
1068                 && ! S_ISDIR (s.st_mode))
1069               {
1070                 lang_add_input_file (optarg,
1071                                      lang_input_file_is_symbols_only_enum,
1072                                      NULL);
1073                 break;
1074               }
1075           }
1076           /* Fall through.  */
1077         case OPTION_RPATH:
1078           if (command_line.rpath == NULL)
1079             command_line.rpath = xstrdup (optarg);
1080           else
1081             {
1082               size_t rpath_len = strlen (command_line.rpath);
1083               size_t optarg_len = strlen (optarg);
1084               char *buf;
1085               char *cp = command_line.rpath;
1086
1087               /* First see whether OPTARG is already in the path.  */
1088               do
1089                 {
1090                   if (strncmp (optarg, cp, optarg_len) == 0
1091                       && (cp[optarg_len] == 0
1092                           || cp[optarg_len] == config.rpath_separator))
1093                     /* We found it.  */
1094                     break;
1095
1096                   /* Not yet found.  */
1097                   cp = strchr (cp, config.rpath_separator);
1098                   if (cp != NULL)
1099                     ++cp;
1100                 }
1101               while (cp != NULL);
1102
1103               if (cp == NULL)
1104                 {
1105                   buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1106                   sprintf (buf, "%s%c%s", command_line.rpath,
1107                            config.rpath_separator, optarg);
1108                   free (command_line.rpath);
1109                   command_line.rpath = buf;
1110                 }
1111             }
1112           break;
1113         case OPTION_RPATH_LINK:
1114           if (command_line.rpath_link == NULL)
1115             command_line.rpath_link = xstrdup (optarg);
1116           else
1117             {
1118               char *buf;
1119
1120               buf = (char *) xmalloc (strlen (command_line.rpath_link)
1121                                       + strlen (optarg)
1122                                       + 2);
1123               sprintf (buf, "%s%c%s", command_line.rpath_link,
1124                        config.rpath_separator, optarg);
1125               free (command_line.rpath_link);
1126               command_line.rpath_link = buf;
1127             }
1128           break;
1129         case OPTION_NO_RELAX:
1130           DISABLE_RELAXATION;
1131           break;
1132         case OPTION_RELAX:
1133           ENABLE_RELAXATION;
1134           break;
1135         case OPTION_RETAIN_SYMBOLS_FILE:
1136           add_keepsyms_file (optarg);
1137           break;
1138         case 'S':
1139           link_info.strip = strip_debugger;
1140           break;
1141         case 's':
1142           link_info.strip = strip_all;
1143           break;
1144         case OPTION_STRIP_DISCARDED:
1145           link_info.strip_discarded = TRUE;
1146           break;
1147         case OPTION_NO_STRIP_DISCARDED:
1148           link_info.strip_discarded = FALSE;
1149           break;
1150         case OPTION_SHARED:
1151           if (config.has_shared)
1152             {
1153               if (bfd_link_relocatable (&link_info))
1154                 einfo (_("%P%F: -r and -shared may not be used together\n"));
1155
1156               link_info.type = type_dll;
1157               /* When creating a shared library, the default
1158                  behaviour is to ignore any unresolved references.  */
1159               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1160                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1161               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1162                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1163             }
1164           else
1165             einfo (_("%P%F: -shared not supported\n"));
1166           break;
1167         case OPTION_PIE:
1168           if (config.has_shared)
1169             {
1170               if (bfd_link_relocatable (&link_info))
1171                 einfo (_("%P%F: -r and -pie may not be used together\n"));
1172
1173               link_info.type = type_pie;
1174             }
1175           else
1176             einfo (_("%P%F: -pie not supported\n"));
1177           break;
1178         case 'h':               /* Used on Solaris.  */
1179         case OPTION_SONAME:
1180           if (optarg[0] == '\0' && command_line.soname
1181               && command_line.soname[0])
1182             einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1183           else
1184             command_line.soname = optarg;
1185           break;
1186         case OPTION_SORT_COMMON:
1187           if (optarg == NULL
1188               || strcmp (optarg, N_("descending")) == 0)
1189             config.sort_common = sort_descending;
1190           else if (strcmp (optarg, N_("ascending")) == 0)
1191             config.sort_common = sort_ascending;
1192           else
1193             einfo (_("%P%F: invalid common section sorting option: %s\n"),
1194                    optarg);
1195           break;
1196         case OPTION_SORT_SECTION:
1197           if (strcmp (optarg, N_("name")) == 0)
1198             sort_section = by_name;
1199           else if (strcmp (optarg, N_("alignment")) == 0)
1200             sort_section = by_alignment;
1201           else
1202             einfo (_("%P%F: invalid section sorting option: %s\n"),
1203                    optarg);
1204           break;
1205         case OPTION_STATS:
1206           config.stats = TRUE;
1207           break;
1208         case OPTION_SYMBOLIC:
1209           command_line.symbolic = symbolic;
1210           break;
1211         case OPTION_SYMBOLIC_FUNCTIONS:
1212           command_line.symbolic = symbolic_functions;
1213           break;
1214         case 't':
1215           trace_files = TRUE;
1216           break;
1217         case 'T':
1218           previous_script_handle = saved_script_handle;
1219           ldfile_open_command_file (optarg);
1220           parser_input = input_script;
1221           yyparse ();
1222           previous_script_handle = NULL;
1223           break;
1224         case OPTION_DEFAULT_SCRIPT:
1225           command_line.default_script = optarg;
1226           break;
1227         case OPTION_SECTION_START:
1228           {
1229             char *optarg2;
1230             char *sec_name;
1231             int len;
1232
1233             /* Check for <something>=<somthing>...  */
1234             optarg2 = strchr (optarg, '=');
1235             if (optarg2 == NULL)
1236               einfo (_("%P%F: invalid argument to option"
1237                        " \"--section-start\"\n"));
1238
1239             optarg2++;
1240
1241             /* So far so good.  Are all the args present?  */
1242             if ((*optarg == '\0') || (*optarg2 == '\0'))
1243               einfo (_("%P%F: missing argument(s) to option"
1244                        " \"--section-start\"\n"));
1245
1246             /* We must copy the section name as set_section_start
1247                doesn't do it for us.  */
1248             len = optarg2 - optarg;
1249             sec_name = (char *) xmalloc (len);
1250             memcpy (sec_name, optarg, len - 1);
1251             sec_name[len - 1] = 0;
1252
1253             /* Then set it...  */
1254             set_section_start (sec_name, optarg2);
1255           }
1256           break;
1257         case OPTION_TARGET_HELP:
1258           /* Mention any target specific options.  */
1259           ldemul_list_emulation_options (stdout);
1260           exit (0);
1261         case OPTION_TBSS:
1262           set_segment_start (".bss", optarg);
1263           break;
1264         case OPTION_TDATA:
1265           set_segment_start (".data", optarg);
1266           break;
1267         case OPTION_TTEXT:
1268           set_segment_start (".text", optarg);
1269           break;
1270         case OPTION_TTEXT_SEGMENT:
1271           set_segment_start (".text-segment", optarg);
1272           break;
1273         case OPTION_TRODATA_SEGMENT:
1274           set_segment_start (".rodata-segment", optarg);
1275           break;
1276         case OPTION_TLDATA_SEGMENT:
1277           set_segment_start (".ldata-segment", optarg);
1278           break;
1279         case OPTION_TRADITIONAL_FORMAT:
1280           link_info.traditional_format = TRUE;
1281           break;
1282         case OPTION_TASK_LINK:
1283           link_info.task_link = TRUE;
1284           /* Fall through.  */
1285         case OPTION_UR:
1286           if (bfd_link_pic (&link_info))
1287             einfo (_("%P%F: -r and %s may not be used together\n"),
1288                      bfd_link_dll (&link_info) ? "-shared" : "-pie");
1289
1290           link_info.type = type_relocatable;
1291           config.build_constructors = TRUE;
1292           config.magic_demand_paged = FALSE;
1293           config.text_read_only = FALSE;
1294           input_flags.dynamic = FALSE;
1295           break;
1296         case 'u':
1297           ldlang_add_undef (optarg, TRUE);
1298           break;
1299         case OPTION_REQUIRE_DEFINED_SYMBOL:
1300           ldlang_add_require_defined (optarg);
1301           break;
1302         case OPTION_UNIQUE:
1303           if (optarg != NULL)
1304             lang_add_unique (optarg);
1305           else
1306             config.unique_orphan_sections = TRUE;
1307           break;
1308         case OPTION_VERBOSE:
1309           ldversion (1);
1310           version_printed = TRUE;
1311           verbose = TRUE;
1312           overflow_cutoff_limit = -2;
1313           if (optarg != NULL)
1314             {
1315               char *end;
1316               int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1317               if (*end)
1318                 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1319 #ifdef ENABLE_PLUGINS
1320               report_plugin_symbols = level > 1;
1321 #endif /* ENABLE_PLUGINS */
1322             }
1323           break;
1324         case 'v':
1325           ldversion (0);
1326           version_printed = TRUE;
1327           break;
1328         case 'V':
1329           ldversion (1);
1330           version_printed = TRUE;
1331           break;
1332         case OPTION_VERSION:
1333           ldversion (2);
1334           xexit (0);
1335           break;
1336         case OPTION_VERSION_SCRIPT:
1337           /* This option indicates a small script that only specifies
1338              version information.  Read it, but don't assume that
1339              we've seen a linker script.  */
1340           {
1341             FILE *hold_script_handle;
1342
1343             hold_script_handle = saved_script_handle;
1344             ldfile_open_command_file (optarg);
1345             saved_script_handle = hold_script_handle;
1346             parser_input = input_version_script;
1347             yyparse ();
1348           }
1349           break;
1350         case OPTION_VERSION_EXPORTS_SECTION:
1351           /* This option records a version symbol to be applied to the
1352              symbols listed for export to be found in the object files
1353              .exports sections.  */
1354           command_line.version_exports_section = optarg;
1355           break;
1356         case OPTION_DYNAMIC_LIST_DATA:
1357           command_line.dynamic_list = dynamic_list_data;
1358           if (command_line.symbolic == symbolic)
1359             command_line.symbolic = symbolic_unset;
1360           break;
1361         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1362           lang_append_dynamic_list_cpp_typeinfo ();
1363           if (command_line.dynamic_list != dynamic_list_data)
1364             command_line.dynamic_list = dynamic_list;
1365           if (command_line.symbolic == symbolic)
1366             command_line.symbolic = symbolic_unset;
1367           break;
1368         case OPTION_DYNAMIC_LIST_CPP_NEW:
1369           lang_append_dynamic_list_cpp_new ();
1370           if (command_line.dynamic_list != dynamic_list_data)
1371             command_line.dynamic_list = dynamic_list;
1372           if (command_line.symbolic == symbolic)
1373             command_line.symbolic = symbolic_unset;
1374           break;
1375         case OPTION_DYNAMIC_LIST:
1376           /* This option indicates a small script that only specifies
1377              a dynamic list.  Read it, but don't assume that we've
1378              seen a linker script.  */
1379           {
1380             FILE *hold_script_handle;
1381
1382             hold_script_handle = saved_script_handle;
1383             ldfile_open_command_file (optarg);
1384             saved_script_handle = hold_script_handle;
1385             parser_input = input_dynamic_list;
1386             yyparse ();
1387           }
1388           if (command_line.dynamic_list != dynamic_list_data)
1389             command_line.dynamic_list = dynamic_list;
1390           if (command_line.symbolic == symbolic)
1391             command_line.symbolic = symbolic_unset;
1392           break;
1393         case OPTION_WARN_COMMON:
1394           config.warn_common = TRUE;
1395           break;
1396         case OPTION_WARN_CONSTRUCTORS:
1397           config.warn_constructors = TRUE;
1398           break;
1399         case OPTION_WARN_FATAL:
1400           config.fatal_warnings = TRUE;
1401           break;
1402         case OPTION_NO_WARN_FATAL:
1403           config.fatal_warnings = FALSE;
1404           break;
1405         case OPTION_WARN_MULTIPLE_GP:
1406           config.warn_multiple_gp = TRUE;
1407           break;
1408         case OPTION_WARN_ONCE:
1409           config.warn_once = TRUE;
1410           break;
1411         case OPTION_WARN_SECTION_ALIGN:
1412           config.warn_section_align = TRUE;
1413           break;
1414         case OPTION_WARN_SHARED_TEXTREL:
1415           link_info.warn_shared_textrel = TRUE;
1416           break;
1417         case OPTION_WARN_ALTERNATE_EM:
1418           link_info.warn_alternate_em = TRUE;
1419           break;
1420         case OPTION_WHOLE_ARCHIVE:
1421           input_flags.whole_archive = TRUE;
1422           break;
1423         case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1424           input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1425           break;
1426         case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1427           input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1428           break;
1429         case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1430           input_flags.add_DT_NEEDED_for_regular = TRUE;
1431           break;
1432         case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1433           input_flags.add_DT_NEEDED_for_regular = FALSE;
1434           break;
1435         case OPTION_WRAP:
1436           add_wrap (optarg);
1437           break;
1438         case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1439           add_ignoresym (&link_info, optarg);
1440           break;
1441         case OPTION_DISCARD_NONE:
1442           link_info.discard = discard_none;
1443           break;
1444         case 'X':
1445           link_info.discard = discard_l;
1446           break;
1447         case 'x':
1448           link_info.discard = discard_all;
1449           break;
1450         case 'Y':
1451           if (CONST_STRNEQ (optarg, "P,"))
1452             optarg += 2;
1453           if (default_dirlist != NULL)
1454             free (default_dirlist);
1455           default_dirlist = xstrdup (optarg);
1456           break;
1457         case 'y':
1458           add_ysym (optarg);
1459           break;
1460         case OPTION_SPARE_DYNAMIC_TAGS:
1461           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1462           break;
1463         case OPTION_SPLIT_BY_RELOC:
1464           if (optarg != NULL)
1465             config.split_by_reloc = strtoul (optarg, NULL, 0);
1466           else
1467             config.split_by_reloc = 32768;
1468           break;
1469         case OPTION_SPLIT_BY_FILE:
1470           if (optarg != NULL)
1471             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1472           else
1473             config.split_by_file = 1;
1474           break;
1475         case OPTION_CHECK_SECTIONS:
1476           command_line.check_section_addresses = 1;
1477           break;
1478         case OPTION_NO_CHECK_SECTIONS:
1479           command_line.check_section_addresses = 0;
1480           break;
1481         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1482           command_line.accept_unknown_input_arch = TRUE;
1483           break;
1484         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1485           command_line.accept_unknown_input_arch = FALSE;
1486           break;
1487         case '(':
1488           lang_enter_group ();
1489           ingroup++;
1490           break;
1491         case ')':
1492           if (! ingroup)
1493             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1494
1495           lang_leave_group ();
1496           ingroup--;
1497           break;
1498
1499         case OPTION_INIT:
1500           link_info.init_function = optarg;
1501           break;
1502
1503         case OPTION_FINI:
1504           link_info.fini_function = optarg;
1505           break;
1506
1507         case OPTION_REDUCE_MEMORY_OVERHEADS:
1508           link_info.reduce_memory_overheads = TRUE;
1509           if (config.hash_table_size == 0)
1510             config.hash_table_size = 1021;
1511           break;
1512
1513         case OPTION_HASH_SIZE:
1514           {
1515             bfd_size_type new_size;
1516
1517             new_size = strtoul (optarg, NULL, 0);
1518             if (new_size)
1519               config.hash_table_size = new_size;
1520             else
1521               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1522           }
1523           break;
1524
1525         case OPTION_PUSH_STATE:
1526           input_flags.pushed = xmemdup (&input_flags,
1527                                         sizeof (input_flags),
1528                                         sizeof (input_flags));
1529           break;
1530
1531         case OPTION_POP_STATE:
1532           if (input_flags.pushed == NULL)
1533             einfo (_("%P%F: no state pushed before popping\n"));
1534           else
1535             {
1536               struct lang_input_statement_flags *oldp = input_flags.pushed;
1537               memcpy (&input_flags, oldp, sizeof (input_flags));
1538               free (oldp);
1539             }
1540           break;
1541
1542         case OPTION_PRINT_MEMORY_USAGE:
1543           command_line.print_memory_usage = TRUE;
1544           break;
1545
1546         case OPTION_ORPHAN_HANDLING:
1547           if (strcasecmp (optarg, "place") == 0)
1548             config.orphan_handling = orphan_handling_place;
1549           else if (strcasecmp (optarg, "warn") == 0)
1550             config.orphan_handling = orphan_handling_warn;
1551           else if (strcasecmp (optarg, "error") == 0)
1552             config.orphan_handling = orphan_handling_error;
1553           else if (strcasecmp (optarg, "discard") == 0)
1554             config.orphan_handling = orphan_handling_discard;
1555           else
1556             einfo (_("%P%F: invalid argument to option"
1557                      " \"--orphan-handling\"\n"));
1558           break;
1559         }
1560     }
1561
1562   if (command_line.soname && command_line.soname[0] == '\0')
1563     {
1564       einfo (_("%P: SONAME must not be empty string; ignored\n"));
1565       command_line.soname = NULL;
1566     }
1567
1568   while (ingroup)
1569     {
1570       lang_leave_group ();
1571       ingroup--;
1572     }
1573
1574   if (default_dirlist != NULL)
1575     {
1576       set_default_dirlist (default_dirlist);
1577       free (default_dirlist);
1578     }
1579
1580   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1581     /* FIXME: Should we allow emulations a chance to set this ?  */
1582     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1583
1584   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1585     /* FIXME: Should we allow emulations a chance to set this ?  */
1586     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1587
1588   if (bfd_link_relocatable (&link_info)
1589       && command_line.check_section_addresses < 0)
1590     command_line.check_section_addresses = 0;
1591
1592   /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1593      --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1594      --dynamic-list FILE.  -Bsymbolic and -Bsymbolic-functions are
1595      for PIC outputs.  -Bsymbolic overrides all others and vice versa.  */
1596   switch (command_line.symbolic)
1597     {
1598     case symbolic_unset:
1599       break;
1600     case symbolic:
1601       /* -Bsymbolic is for PIC output only.  */
1602       if (bfd_link_pic (&link_info))
1603         {
1604           link_info.symbolic = TRUE;
1605           /* Should we free the unused memory?  */
1606           link_info.dynamic_list = NULL;
1607           command_line.dynamic_list = dynamic_list_unset;
1608         }
1609       break;
1610     case symbolic_functions:
1611       /* -Bsymbolic-functions is for PIC output only.  */
1612       if (bfd_link_pic (&link_info))
1613         command_line.dynamic_list = dynamic_list_data;
1614       break;
1615     }
1616
1617   switch (command_line.dynamic_list)
1618     {
1619     case dynamic_list_unset:
1620       break;
1621     case dynamic_list_data:
1622       link_info.dynamic_data = TRUE;
1623       /* Fall through.  */
1624     case dynamic_list:
1625       link_info.dynamic = TRUE;
1626       break;
1627     }
1628
1629   if (!bfd_link_dll (&link_info))
1630     {
1631       if (command_line.filter_shlib)
1632         einfo (_("%P%F: -F may not be used without -shared\n"));
1633       if (command_line.auxiliary_filters)
1634         einfo (_("%P%F: -f may not be used without -shared\n"));
1635     }
1636
1637   /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols).  I
1638      don't see how else this can be handled, since in this case we
1639      must preserve all externally visible symbols.  */
1640   if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
1641     {
1642       link_info.strip = strip_debugger;
1643       if (link_info.discard == discard_sec_merge)
1644         link_info.discard = discard_all;
1645     }
1646 }
1647
1648 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1649    library search path.  */
1650
1651 static void
1652 set_default_dirlist (char *dirlist_ptr)
1653 {
1654   char *p;
1655
1656   while (1)
1657     {
1658       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1659       if (p != NULL)
1660         *p = '\0';
1661       if (*dirlist_ptr != '\0')
1662         ldfile_add_library_path (dirlist_ptr, TRUE);
1663       if (p == NULL)
1664         break;
1665       dirlist_ptr = p + 1;
1666     }
1667 }
1668
1669 static void
1670 set_section_start (char *sect, char *valstr)
1671 {
1672   const char *end;
1673   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1674   if (*end)
1675     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1676   lang_section_start (sect, exp_intop (val), NULL);
1677 }
1678
1679 static void
1680 set_segment_start (const char *section, char *valstr)
1681 {
1682   const char *name;
1683   const char *end;
1684   segment_type *seg;
1685
1686   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1687   if (*end)
1688     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1689   /* If we already have an entry for this segment, update the existing
1690      value.  */
1691   name = section + 1;
1692   for (seg = segments; seg; seg = seg->next)
1693     if (strcmp (seg->name, name) == 0)
1694       {
1695         seg->value = val;
1696         lang_section_start (section, exp_intop (val), seg);
1697         return;
1698       }
1699   /* There was no existing value so we must create a new segment
1700      entry.  */
1701   seg = (segment_type *) stat_alloc (sizeof (*seg));
1702   seg->name = name;
1703   seg->value = val;
1704   seg->used = FALSE;
1705   /* Add it to the linked list of segments.  */
1706   seg->next = segments;
1707   segments = seg;
1708   /* Historically, -Ttext and friends set the base address of a
1709      particular section.  For backwards compatibility, we still do
1710      that.  If a SEGMENT_START directive is seen, the section address
1711      assignment will be disabled.  */
1712   lang_section_start (section, exp_intop (val), seg);
1713 }
1714
1715 static void
1716 elf_shlib_list_options (FILE *file)
1717 {
1718   fprintf (file, _("\
1719   --audit=AUDITLIB            Specify a library to use for auditing\n"));
1720   fprintf (file, _("\
1721   -Bgroup                     Selects group name lookup rules for DSO\n"));
1722   fprintf (file, _("\
1723   --disable-new-dtags         Disable new dynamic tags\n"));
1724   fprintf (file, _("\
1725   --enable-new-dtags          Enable new dynamic tags\n"));
1726   fprintf (file, _("\
1727   --eh-frame-hdr              Create .eh_frame_hdr section\n"));
1728   fprintf (file, _("\
1729   --no-eh-frame-hdr           Do not create .eh_frame_hdr section\n"));
1730   fprintf (file, _("\
1731   --exclude-libs=LIBS         Make all symbols in LIBS hidden\n"));
1732   fprintf (file, _("\
1733   --hash-style=STYLE          Set hash style to sysv, gnu or both\n"));
1734   fprintf (file, _("\
1735   -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1736                               Specify a library to use for auditing dependencies\n"));
1737   fprintf (file, _("\
1738   -z combreloc                Merge dynamic relocs into one section and sort\n"));
1739   fprintf (file, _("\
1740   -z nocombreloc              Don't merge dynamic relocs into one section\n"));
1741   fprintf (file, _("\
1742   -z global                   Make symbols in DSO available for subsequently\n\
1743                                loaded objects\n"));
1744   fprintf (file, _("\
1745   -z initfirst                Mark DSO to be initialized first at runtime\n"));
1746   fprintf (file, _("\
1747   -z interpose                Mark object to interpose all DSOs but executable\n"));
1748   fprintf (file, _("\
1749   -z lazy                     Mark object lazy runtime binding (default)\n"));
1750   fprintf (file, _("\
1751   -z loadfltr                 Mark object requiring immediate process\n"));
1752   fprintf (file, _("\
1753   -z nocopyreloc              Don't create copy relocs\n"));
1754   fprintf (file, _("\
1755   -z nodefaultlib             Mark object not to use default search paths\n"));
1756   fprintf (file, _("\
1757   -z nodelete                 Mark DSO non-deletable at runtime\n"));
1758   fprintf (file, _("\
1759   -z nodlopen                 Mark DSO not available to dlopen\n"));
1760   fprintf (file, _("\
1761   -z nodump                   Mark DSO not available to dldump\n"));
1762   fprintf (file, _("\
1763   -z now                      Mark object non-lazy runtime binding\n"));
1764   fprintf (file, _("\
1765   -z origin                   Mark object requiring immediate $ORIGIN\n\
1766                                 processing at runtime\n"));
1767 #if DEFAULT_LD_Z_RELRO
1768   fprintf (file, _("\
1769   -z relro                    Create RELRO program header (default)\n"));
1770   fprintf (file, _("\
1771   -z norelro                  Don't create RELRO program header\n"));
1772 #else
1773   fprintf (file, _("\
1774   -z relro                    Create RELRO program header\n"));
1775   fprintf (file, _("\
1776   -z norelro                  Don't create RELRO program header (default)\n"));
1777 #endif
1778   fprintf (file, _("\
1779   -z common                   Generate common symbols with STT_COMMON type\n"));
1780   fprintf (file, _("\
1781   -z nocommon                 Generate common symbols with STT_OBJECT type\n"));
1782   fprintf (file, _("\
1783   -z stacksize=SIZE           Set size of stack segment\n"));
1784   fprintf (file, _("\
1785   -z text                     Treat DT_TEXTREL in shared object as error\n"));
1786   fprintf (file, _("\
1787   -z notext                   Don't treat DT_TEXTREL in shared object as error\n"));
1788   fprintf (file, _("\
1789   -z textoff                  Don't treat DT_TEXTREL in shared object as error\n"));
1790 }
1791
1792 static void
1793 elf_static_list_options (FILE *file)
1794 {
1795   fprintf (file, _("\
1796   --build-id[=STYLE]          Generate build ID note\n"));
1797   fprintf (file, _("\
1798   --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
1799                               Compress DWARF debug sections using zlib\n"));
1800 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
1801   fprintf (file, _("\
1802                                Default: zlib-gabi\n"));
1803 #else
1804   fprintf (file, _("\
1805                                Default: none\n"));
1806 #endif
1807   fprintf (file, _("\
1808   -z common-page-size=SIZE    Set common page size to SIZE\n"));
1809   fprintf (file, _("\
1810   -z max-page-size=SIZE       Set maximum page size to SIZE\n"));
1811   fprintf (file, _("\
1812   -z defs                     Report unresolved symbols in object files.\n"));
1813   fprintf (file, _("\
1814   -z muldefs                  Allow multiple definitions\n"));
1815   fprintf (file, _("\
1816   -z execstack                Mark executable as requiring executable stack\n"));
1817   fprintf (file, _("\
1818   -z noexecstack              Mark executable as not requiring executable stack\n"));
1819 }
1820
1821 static void
1822 elf_plt_unwind_list_options (FILE *file)
1823 {
1824   fprintf (file, _("\
1825   --ld-generated-unwind-info  Generate exception handling info for PLT\n\
1826   --no-ld-generated-unwind-info\n\
1827                               Don't generate exception handling info for PLT\n"));
1828 }
1829
1830 static void
1831 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1832                  bfd_boolean plt_unwind)
1833 {
1834   if (!elf)
1835     return;
1836   printf (_("ELF emulations:\n"));
1837   if (plt_unwind)
1838     elf_plt_unwind_list_options (file);
1839   elf_static_list_options (file);
1840   if (shlib)
1841     elf_shlib_list_options (file);
1842 }
1843
1844 \f
1845 /* Print help messages for the options.  */
1846
1847 static void
1848 help (void)
1849 {
1850   unsigned i;
1851   const char **targets, **pp;
1852   int len;
1853
1854   printf (_("Usage: %s [options] file...\n"), program_name);
1855
1856   printf (_("Options:\n"));
1857   for (i = 0; i < OPTION_COUNT; i++)
1858     {
1859       if (ld_options[i].doc != NULL)
1860         {
1861           bfd_boolean comma;
1862           unsigned j;
1863
1864           printf ("  ");
1865
1866           comma = FALSE;
1867           len = 2;
1868
1869           j = i;
1870           do
1871             {
1872               if (ld_options[j].shortopt != '\0'
1873                   && ld_options[j].control != NO_HELP)
1874                 {
1875                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1876                   len += (comma ? 2 : 0) + 2;
1877                   if (ld_options[j].arg != NULL)
1878                     {
1879                       if (ld_options[j].opt.has_arg != optional_argument)
1880                         {
1881                           printf (" ");
1882                           ++len;
1883                         }
1884                       printf ("%s", _(ld_options[j].arg));
1885                       len += strlen (_(ld_options[j].arg));
1886                     }
1887                   comma = TRUE;
1888                 }
1889               ++j;
1890             }
1891           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1892
1893           j = i;
1894           do
1895             {
1896               if (ld_options[j].opt.name != NULL
1897                   && ld_options[j].control != NO_HELP)
1898                 {
1899                   int two_dashes =
1900                     (ld_options[j].control == TWO_DASHES
1901                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1902
1903                   printf ("%s-%s%s",
1904                           comma ? ", " : "",
1905                           two_dashes ? "-" : "",
1906                           ld_options[j].opt.name);
1907                   len += ((comma ? 2 : 0)
1908                           + 1
1909                           + (two_dashes ? 1 : 0)
1910                           + strlen (ld_options[j].opt.name));
1911                   if (ld_options[j].arg != NULL)
1912                     {
1913                       printf (" %s", _(ld_options[j].arg));
1914                       len += 1 + strlen (_(ld_options[j].arg));
1915                     }
1916                   comma = TRUE;
1917                 }
1918               ++j;
1919             }
1920           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1921
1922           if (len >= 30)
1923             {
1924               printf ("\n");
1925               len = 0;
1926             }
1927
1928           for (; len < 30; len++)
1929             putchar (' ');
1930
1931           printf ("%s\n", _(ld_options[i].doc));
1932         }
1933     }
1934   printf (_("  @FILE"));
1935   for (len = strlen ("  @FILE"); len < 30; len++)
1936     putchar (' ');
1937   printf (_("Read options from FILE\n"));
1938
1939   /* Note: Various tools (such as libtool) depend upon the
1940      format of the listings below - do not change them.  */
1941   /* xgettext:c-format */
1942   printf (_("%s: supported targets:"), program_name);
1943   targets = bfd_target_list ();
1944   for (pp = targets; *pp != NULL; pp++)
1945     printf (" %s", *pp);
1946   free (targets);
1947   printf ("\n");
1948
1949   /* xgettext:c-format */
1950   printf (_("%s: supported emulations: "), program_name);
1951   ldemul_list_emulations (stdout);
1952   printf ("\n");
1953
1954   /* xgettext:c-format */
1955   printf (_("%s: emulation specific options:\n"), program_name);
1956   ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
1957                    ELF_PLT_UNWIND_LIST_OPTIONS);
1958   ldemul_list_emulation_options (stdout);
1959   printf ("\n");
1960
1961   if (REPORT_BUGS_TO[0])
1962     printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1963 }