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  They have been replaced by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