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