ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001, 2002, 2003, 2004, 2005
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GLD, the Gnu Linker.
   7
   8    GLD is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    GLD is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with GLD; see the file COPYING.  If not, write to the Free
  20    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  21    02110-1301, USA.  */
  22
  23 #include "config.h"
  24 #include "bfd.h"
  25 #include "sysdep.h"
  26 #include "libiberty.h"
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include "safe-ctype.h"
  30 #include "getopt.h"
  31 #include "bfdlink.h"
  32 #include "ld.h"
  33 #include "ldmain.h"
  34 #include "ldmisc.h"
  35 #include "ldexp.h"
  36 #include "ldlang.h"
  37 #include <ldgram.h>
  38 #include "ldlex.h"
  39 #include "ldfile.h"
  40 #include "ldver.h"
  41 #include "ldemul.h"
  42 #include "demangle.h"
  43
  44 #ifndef PATH_SEPARATOR
  45 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
  46 #define PATH_SEPARATOR ';'
  47 #else
  48 #define PATH_SEPARATOR ':'
  49 #endif
  50 #endif
  51
  52 /* Somewhere above, sys/stat.h got included . . . .  */
  53 #if !defined(S_ISDIR) && defined(S_IFDIR)
  54 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  55 #endif
  56
  57 static void set_default_dirlist (char *);
  58 static void set_section_start (char *, char *);
  59 static void set_segment_start (const char *, char *);
  60 static void help (void);
  61
  62 /* Non-zero if we are processing a --defsym from the command line.  */
  63 int parsing_defsym = 0;
  64
  65 /* Codes used for the long options with no short synonyms.  150 isn't
  66    special; it's just an arbitrary non-ASCII char value.  */
  67 enum option_values
  68 {
  69   OPTION_ASSERT = 150,
  70   OPTION_CALL_SHARED,
  71   OPTION_CREF,
  72   OPTION_DEFSYM,
  73   OPTION_DEMANGLE,
  74   OPTION_DYNAMIC_LINKER,
  75   OPTION_SYSROOT,
  76   OPTION_EB,
  77   OPTION_EL,
  78   OPTION_EMBEDDED_RELOCS,
  79   OPTION_EXPORT_DYNAMIC,
  80   OPTION_HELP,
  81   OPTION_IGNORE,
  82   OPTION_MAP,
  83   OPTION_NO_DEMANGLE,
  84   OPTION_NO_KEEP_MEMORY,
  85   OPTION_NO_WARN_MISMATCH,
  86   OPTION_NOINHIBIT_EXEC,
  87   OPTION_NON_SHARED,
  88   OPTION_NO_WHOLE_ARCHIVE,
  89   OPTION_OFORMAT,
  90   OPTION_RELAX,
  91   OPTION_RETAIN_SYMBOLS_FILE,
  92   OPTION_RPATH,
  93   OPTION_RPATH_LINK,
  94   OPTION_SHARED,
  95   OPTION_SONAME,
  96   OPTION_SORT_COMMON,
  97   OPTION_SORT_SECTION,
  98   OPTION_STATS,
  99   OPTION_SYMBOLIC,
 100   OPTION_TASK_LINK,
 101   OPTION_TBSS,
 102   OPTION_TDATA,
 103   OPTION_TTEXT,
 104   OPTION_TRADITIONAL_FORMAT,
 105   OPTION_UR,
 106   OPTION_VERBOSE,
 107   OPTION_VERSION,
 108   OPTION_VERSION_SCRIPT,
 109   OPTION_VERSION_EXPORTS_SECTION,
 110   OPTION_DYNAMIC_LIST,
 111   OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
 112   OPTION_WARN_COMMON,
 113   OPTION_WARN_CONSTRUCTORS,
 114   OPTION_WARN_FATAL,
 115   OPTION_WARN_MULTIPLE_GP,
 116   OPTION_WARN_ONCE,
 117   OPTION_WARN_SECTION_ALIGN,
 118   OPTION_SPLIT_BY_RELOC,
 119   OPTION_SPLIT_BY_FILE ,
 120   OPTION_WHOLE_ARCHIVE,
 121   OPTION_ADD_NEEDED,
 122   OPTION_NO_ADD_NEEDED,
 123   OPTION_AS_NEEDED,
 124   OPTION_NO_AS_NEEDED,
 125   OPTION_WRAP,
 126   OPTION_FORCE_EXE_SUFFIX,
 127   OPTION_GC_SECTIONS,
 128   OPTION_NO_GC_SECTIONS,
 129   OPTION_PRINT_GC_SECTIONS,
 130   OPTION_NO_PRINT_GC_SECTIONS,
 131   OPTION_HASH_SIZE,
 132   OPTION_CHECK_SECTIONS,
 133   OPTION_NO_CHECK_SECTIONS,
 134   OPTION_NO_UNDEFINED,
 135   OPTION_INIT,
 136   OPTION_FINI,
 137   OPTION_SECTION_START,
 138   OPTION_UNIQUE,
 139   OPTION_TARGET_HELP,
 140   OPTION_ALLOW_SHLIB_UNDEFINED,
 141   OPTION_NO_ALLOW_SHLIB_UNDEFINED,
 142   OPTION_ALLOW_MULTIPLE_DEFINITION,
 143   OPTION_NO_UNDEFINED_VERSION,
 144   OPTION_DEFAULT_SYMVER,
 145   OPTION_DEFAULT_IMPORTED_SYMVER,
 146   OPTION_DISCARD_NONE,
 147   OPTION_SPARE_DYNAMIC_TAGS,
 148   OPTION_NO_DEFINE_COMMON,
 149   OPTION_NOSTDLIB,
 150   OPTION_NO_OMAGIC,
 151   OPTION_STRIP_DISCARDED,
 152   OPTION_NO_STRIP_DISCARDED,
 153   OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
 154   OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
 155   OPTION_PIE,
 156   OPTION_UNRESOLVED_SYMBOLS,
 157   OPTION_WARN_UNRESOLVED_SYMBOLS,
 158   OPTION_ERROR_UNRESOLVED_SYMBOLS,
 159   OPTION_WARN_SHARED_TEXTREL,
 160   OPTION_REDUCE_MEMORY_OVERHEADS
 161 };
 162
 163 /* The long options.  This structure is used for both the option
 164    parsing and the help text.  */
 165
 166 struct ld_option
 167 {
 168   /* The long option information.  */
 169   struct option opt;
 170   /* The short option with the same meaning ('\0' if none).  */
 171   char shortopt;
 172   /* The name of the argument (NULL if none).  */
 173   const char *arg;
 174   /* The documentation string.  If this is NULL, this is a synonym for
 175      the previous option.  */
 176   const char *doc;
 177   enum {
 178     /* Use one dash before long option name.  */
 179     ONE_DASH,
 180     /* Use two dashes before long option name.  */
 181     TWO_DASHES,
 182     /* Only accept two dashes before the long option name.
 183        This is an overloading of the use of this enum, since originally it
 184        was only intended to tell the --help display function how to display
 185        the long option name.  This feature was added in order to resolve
 186        the confusion about the -omagic command line switch.  Is it setting
 187        the output file name to "magic" or is it setting the NMAGIC flag on
 188        the output ?  It has been decided that it is setting the output file
 189        name, and that if you want to set the NMAGIC flag you should use -N
 190        or --omagic.  */
 191     EXACTLY_TWO_DASHES,
 192     /* Don't mention this option in --help output.  */
 193     NO_HELP
 194   } control;
 195 };
 196
 197 static const struct ld_option ld_options[] =
 198 {
 199   { {NULL, required_argument, NULL, '\0'},
 200     'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 201     ONE_DASH },
 202   { {"architecture", required_argument, NULL, 'A'},
 203     'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 204   { {"format", required_argument, NULL, 'b'},
 205     'b', N_("TARGET"), N_("Specify target for following input files"),
 206     TWO_DASHES },
 207   { {"mri-script", required_argument, NULL, 'c'},
 208     'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 209   { {"dc", no_argument, NULL, 'd'},
 210     'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 211   { {"dp", no_argument, NULL, 'd'},
 212     '\0', NULL, NULL, ONE_DASH },
 213   { {"entry", required_argument, NULL, 'e'},
 214     'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 215   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 216     'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 217   { {"EB", no_argument, NULL, OPTION_EB},
 218     '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 219   { {"EL", no_argument, NULL, OPTION_EL},
 220     '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 221   { {"auxiliary", required_argument, NULL, 'f'},
 222     'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 223     TWO_DASHES },
 224   { {"filter", required_argument, NULL, 'F'},
 225     'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
 226     TWO_DASHES },
 227   { {NULL, no_argument, NULL, '\0'},
 228     'g', NULL, N_("Ignored"), ONE_DASH },
 229   { {"gpsize", required_argument, NULL, 'G'},
 230     'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 231     TWO_DASHES },
 232   { {"soname", required_argument, NULL, OPTION_SONAME},
 233     'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 234   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 235     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
 236     TWO_DASHES },
 237   { {"library", required_argument, NULL, 'l'},
 238     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 239   { {"library-path", required_argument, NULL, 'L'},
 240     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 241     TWO_DASHES },
 242   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 243     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 244   { {NULL, required_argument, NULL, '\0'},
 245     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 246   { {"print-map", no_argument, NULL, 'M'},
 247     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 248   { {"nmagic", no_argument, NULL, 'n'},
 249     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 250   { {"omagic", no_argument, NULL, 'N'},
 251     'N', NULL, N_("Do not page align data, do not make text readonly"),
 252     EXACTLY_TWO_DASHES },
 253   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 254     '\0', NULL, N_("Page align data, make text readonly"),
 255     EXACTLY_TWO_DASHES },
 256   { {"output", required_argument, NULL, 'o'},
 257     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 258   { {NULL, required_argument, NULL, '\0'},
 259     'O', NULL, N_("Optimize output file"), ONE_DASH },
 260   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 261     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 262   { {"emit-relocs", no_argument, NULL, 'q'},
 263     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 264   { {"relocatable", no_argument, NULL, 'r'},
 265     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 266   { {NULL, no_argument, NULL, '\0'},
 267     'i', NULL, NULL, ONE_DASH },
 268   { {"just-symbols", required_argument, NULL, 'R'},
 269     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 270     TWO_DASHES },
 271   { {"strip-all", no_argument, NULL, 's'},
 272     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 273   { {"strip-debug", no_argument, NULL, 'S'},
 274     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 275   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 276     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 277   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 278     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 279   { {"trace", no_argument, NULL, 't'},
 280     't', NULL, N_("Trace file opens"), TWO_DASHES },
 281   { {"script", required_argument, NULL, 'T'},
 282     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 283   { {"undefined", required_argument, NULL, 'u'},
 284     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 285     TWO_DASHES },
 286   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 287     '\0', N_("[=SECTION]"),
 288     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 289   { {"Ur", no_argument, NULL, OPTION_UR},
 290     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 291   { {"version", no_argument, NULL, OPTION_VERSION},
 292     'v', NULL, N_("Print version information"), TWO_DASHES },
 293   { {NULL, no_argument, NULL, '\0'},
 294     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 295   { {"discard-all", no_argument, NULL, 'x'},
 296     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 297   { {"discard-locals", no_argument, NULL, 'X'},
 298     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 299   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 300     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 301   { {"trace-symbol", required_argument, NULL, 'y'},
 302     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 303   { {NULL, required_argument, NULL, '\0'},
 304     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 305     ONE_DASH },
 306   { {"start-group", no_argument, NULL, '('},
 307     '(', NULL, N_("Start a group"), TWO_DASHES },
 308   { {"end-group", no_argument, NULL, ')'},
 309     ')', NULL, N_("End a group"), TWO_DASHES },
 310   { {"accept-unknown-input-arch", no_argument, NULL,
 311      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 312     '\0', NULL,
 313     N_("Accept input files whose architecture cannot be determined"),
 314     TWO_DASHES },
 315   { {"no-accept-unknown-input-arch", no_argument, NULL,
 316      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 317     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 318     TWO_DASHES },
 319   { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
 320     '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
 321                    "\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
 322   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
 323     '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
 324                    "\t\t\t\tin following dynamic libs"), TWO_DASHES },
 325   { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
 326     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 327     TWO_DASHES },
 328   { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
 329     '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
 330     TWO_DASHES },
 331   { {"assert", required_argument, NULL, OPTION_ASSERT},
 332     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 333   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 334     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 335   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 336     '\0', NULL, NULL, ONE_DASH },
 337   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 338     '\0', NULL, NULL, ONE_DASH },
 339   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 340     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 341   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 342     '\0', NULL, NULL, ONE_DASH },
 343   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 344     '\0', NULL, NULL, ONE_DASH },
 345   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 346     '\0', NULL, NULL, ONE_DASH },
 347   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 348     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 349   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 350     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 351     TWO_DASHES },
 352   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 353     '\0', NULL, N_("Do not check section addresses for overlaps"),
 354     TWO_DASHES },
 355   { {"cref", no_argument, NULL, OPTION_CREF},
 356     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 357   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 358     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 359   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 360     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 361     TWO_DASHES },
 362   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 363     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 364   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 365     '\0', NULL, N_("Treat warnings as errors"),
 366     TWO_DASHES },
 367   { {"fini", required_argument, NULL, OPTION_FINI},
 368     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 369   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 370     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 371   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 372     '\0', NULL, N_("Remove unused sections (on some targets)"),
 373     TWO_DASHES },
 374   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 375     '\0', NULL, N_("Don't remove unused sections (default)"),
 376     TWO_DASHES },
 377   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 378     '\0', NULL, N_("List removed unused sections on stderr"),
 379     TWO_DASHES },
 380   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 381     '\0', NULL, N_("Do not list removed unused sections"),
 382     TWO_DASHES },
 383   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 384     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 385     TWO_DASHES },
 386   { {"help", no_argument, NULL, OPTION_HELP},
 387     '\0', NULL, N_("Print option help"), TWO_DASHES },
 388   { {"init", required_argument, NULL, OPTION_INIT},
 389     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 390   { {"Map", required_argument, NULL, OPTION_MAP},
 391     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 392   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 393     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 394   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 395     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 396   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 397     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 398   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 399     '\0', NULL, N_("Do not allow unresolved references in object files"),
 400     TWO_DASHES },
 401   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 402     '\0', NULL, N_("Allow unresolved references in shared libaries"),
 403     TWO_DASHES },
 404   { {"no-allow-shlib-undefined", no_argument, NULL,
 405      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 406     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 407     TWO_DASHES },
 408   { {"allow-multiple-definition", no_argument, NULL,
 409      OPTION_ALLOW_MULTIPLE_DEFINITION},
 410     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 411   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 412     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 413   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 414     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 415   { {"default-imported-symver", no_argument, NULL,
 416       OPTION_DEFAULT_IMPORTED_SYMVER},
 417     '\0', NULL, N_("Create default symbol version for imported symbols"),
 418     TWO_DASHES },
 419   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 420     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 421   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 422     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 423   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 424     '\0', NULL, N_("Create an output file even if errors occur"),
 425     TWO_DASHES },
 426   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 427     '\0', NULL, NULL, NO_HELP },
 428   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 429     '\0', NULL, N_("Only use library directories specified on\n"
 430                    "\t\t\t\tthe command line"), ONE_DASH },
 431   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 432     '\0', N_("TARGET"), N_("Specify target of output file"),
 433     EXACTLY_TWO_DASHES },
 434   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 435     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 436   { {"reduce-memory-overheads", no_argument, NULL,
 437      OPTION_REDUCE_MEMORY_OVERHEADS},
 438     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 439     TWO_DASHES },
 440   { {"relax", no_argument, NULL, OPTION_RELAX},
 441     '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 442   { {"retain-symbols-file", required_argument, NULL,
 443      OPTION_RETAIN_SYMBOLS_FILE},
 444     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 445   { {"rpath", required_argument, NULL, OPTION_RPATH},
 446     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 447   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 448     '\0', N_("PATH"), N_("Set link time shared library search path"),
 449     ONE_DASH },
 450   { {"shared", no_argument, NULL, OPTION_SHARED},
 451     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 452   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 453     '\0', NULL, NULL, ONE_DASH },
 454   { {"pie", no_argument, NULL, OPTION_PIE},
 455     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 456   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 457     '\0', NULL, NULL, TWO_DASHES },
 458   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 459     '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 460   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 461     '\0', NULL, NULL, NO_HELP },
 462   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 463     '\0', N_("name|alignment"),
 464     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 465   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 466     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 467     TWO_DASHES },
 468   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 469     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 470     TWO_DASHES },
 471   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 472     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 473     TWO_DASHES },
 474   { {"stats", no_argument, NULL, OPTION_STATS},
 475     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 476   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 477     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 478   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 479     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 480   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 481     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 482   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 483     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 484     TWO_DASHES },
 485   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 486     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 487   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 488     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 489   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 490     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 491   { {"unresolved-symbols=<method>", required_argument, NULL,
 492      OPTION_UNRESOLVED_SYMBOLS},
 493     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 494                    "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n"
 495                    "\t\t\t\tignore-in-shared-libs"), TWO_DASHES },
 496   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 497     '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 498   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 499     '\0', NULL, NULL, NO_HELP },
 500   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 501     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 502   { {"version-exports-section", required_argument, NULL,
 503      OPTION_VERSION_EXPORTS_SECTION },
 504     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 505                            "\t\t\t\tSYMBOL as the version."), TWO_DASHES },
 506   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 507     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 508   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 509     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 510   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 511     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 512   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 513     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 514     TWO_DASHES },
 515   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 516     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 517   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 518     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 519   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 520     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 521     TWO_DASHES },
 522   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 523     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 524     TWO_DASHES },
 525   { {"warn-unresolved-symbols", no_argument, NULL,
 526      OPTION_WARN_UNRESOLVED_SYMBOLS},
 527     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 528   { {"error-unresolved-symbols", no_argument, NULL,
 529      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 530     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 531   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 532     '\0', NULL, N_("Include all objects from following archives"),
 533     TWO_DASHES },
 534   { {"wrap", required_argument, NULL, OPTION_WRAP},
 535     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 536 };
 537
 538 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 539
 540 void
 541 parse_args (unsigned argc, char **argv)
 542 {
 543   unsigned i;
 544   int is, il, irl;
 545   int ingroup = 0;
 546   char *default_dirlist = NULL;
 547   char *shortopts;
 548   struct option *longopts;
 549   struct option *really_longopts;
 550   int last_optind;
 551   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 552
 553   shortopts = xmalloc (OPTION_COUNT * 3 + 2);
 554   longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 555   really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 556
 557   /* Starting the short option string with '-' is for programs that
 558      expect options and other ARGV-elements in any order and that care about
 559      the ordering of the two.  We describe each non-option ARGV-element
 560      as if it were the argument of an option with character code 1.  */
 561   shortopts[0] = '-';
 562   is = 1;
 563   il = 0;
 564   irl = 0;
 565   for (i = 0; i < OPTION_COUNT; i++)
 566     {
 567       if (ld_options[i].shortopt != '\0')
 568         {
 569           shortopts[is] = ld_options[i].shortopt;
 570           ++is;
 571           if (ld_options[i].opt.has_arg == required_argument
 572               || ld_options[i].opt.has_arg == optional_argument)
 573             {
 574               shortopts[is] = ':';
 575               ++is;
 576               if (ld_options[i].opt.has_arg == optional_argument)
 577                 {
 578                   shortopts[is] = ':';
 579                   ++is;
 580                 }
 581             }
 582         }
 583       if (ld_options[i].opt.name != NULL)
 584         {
 585           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 586             {
 587               really_longopts[irl] = ld_options[i].opt;
 588               ++irl;
 589             }
 590           else
 591             {
 592               longopts[il] = ld_options[i].opt;
 593               ++il;
 594             }
 595         }
 596     }
 597   shortopts[is] = '\0';
 598   longopts[il].name = NULL;
 599   really_longopts[irl].name = NULL;
 600
 601   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 602
 603   /* The -G option is ambiguous on different platforms.  Sometimes it
 604      specifies the largest data size to put into the small data
 605      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 606      the first form takes an argument, while the second does not.
 607
 608      We need to permit the --shared form because on some platforms,
 609      such as Solaris, gcc -shared will pass -G to the linker.
 610
 611      To permit either usage, we look through the argument list.  If we
 612      find -G not followed by a number, we change it into --shared.
 613      This will work for most normal cases.  */
 614   for (i = 1; i < argc; i++)
 615     if (strcmp (argv[i], "-G") == 0
 616         && (i + 1 >= argc
 617             || ! ISDIGIT (argv[i + 1][0])))
 618       argv[i] = (char *) "--shared";
 619
 620   /* Because we permit long options to start with a single dash, and
 621      we have a --library option, and the -l option is conventionally
 622      used with an immediately following argument, we can have bad
 623      results if somebody tries to use -l with a library whose name
 624      happens to start with "ibrary", as in -li.  We avoid problems by
 625      simply turning -l into --library.  This means that users will
 626      have to use two dashes in order to use --library, which is OK
 627      since that's how it is documented.
 628
 629      FIXME: It's possible that this problem can arise for other short
 630      options as well, although the user does always have the recourse
 631      of adding a space between the option and the argument.  */
 632   for (i = 1; i < argc; i++)
 633     {
 634       if (argv[i][0] == '-'
 635           && argv[i][1] == 'l'
 636           && argv[i][2] != '\0')
 637         {
 638           char *n;
 639
 640           n = xmalloc (strlen (argv[i]) + 20);
 641           sprintf (n, "--library=%s", argv[i] + 2);
 642           argv[i] = n;
 643         }
 644     }
 645
 646   last_optind = -1;
 647   while (1)
 648     {
 649       int longind;
 650       int optc;
 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             config.dynamic_link = FALSE;
 700           else if (strcmp (optarg, "shared") == 0
 701                    || strcmp (optarg, "default") == 0)
 702             config.dynamic_link = 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           config.dynamic_link = TRUE;
 732           break;
 733         case OPTION_NON_SHARED:
 734           config.dynamic_link = 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);
 746           parser_input = input_defsym;
 747           parsing_defsym = 1;
 748           yyparse ();
 749           parsing_defsym = 0;
 750           lex_string = NULL;
 751           break;
 752         case OPTION_DEMANGLE:
 753           demangling = TRUE;
 754           if (optarg != NULL)
 755             {
 756               enum demangling_styles style;
 757
 758               style = cplus_demangle_name_to_style (optarg);
 759               if (style == unknown_demangling)
 760                 einfo (_("%F%P: unknown demangling style `%s'"),
 761                        optarg);
 762
 763               cplus_demangle_set_style (style);
 764             }
 765           break;
 766         case 'I':               /* Used on Solaris.  */
 767         case OPTION_DYNAMIC_LINKER:
 768           command_line.interpreter = optarg;
 769           break;
 770         case OPTION_SYSROOT:
 771           /* Already handled in ldmain.c.  */
 772           break;
 773         case OPTION_EB:
 774           command_line.endian = ENDIAN_BIG;
 775           break;
 776         case OPTION_EL:
 777           command_line.endian = ENDIAN_LITTLE;
 778           break;
 779         case OPTION_EMBEDDED_RELOCS:
 780           command_line.embedded_relocs = TRUE;
 781           break;
 782         case OPTION_EXPORT_DYNAMIC:
 783         case 'E': /* HP/UX compatibility.  */
 784           link_info.export_dynamic = TRUE;
 785           break;
 786         case 'e':
 787           lang_add_entry (optarg, TRUE);
 788           break;
 789         case 'f':
 790           if (command_line.auxiliary_filters == NULL)
 791             {
 792               command_line.auxiliary_filters = 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
 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           config.dynamic_link = 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 dynamic_link to TRUE.
 862              Use --call-shared or -Bdynamic for this.  */
 863           break;
 864         case 'n':
 865           config.magic_demand_paged = FALSE;
 866           config.dynamic_link = 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_NOINHIBIT_EXEC:
 953           force_make_executable = TRUE;
 954           break;
 955         case OPTION_NOSTDLIB:
 956           config.only_cmd_line_lib_dirs = TRUE;
 957           break;
 958         case OPTION_NO_WHOLE_ARCHIVE:
 959           whole_archive = FALSE;
 960           break;
 961         case 'O':
 962           /* FIXME "-O<non-digits> <value>" used to set the address of
 963              section <non-digits>.  Was this for compatibility with
 964              something, or can we create a new option to do that
 965              (with a syntax similar to -defsym)?
 966              getopt can't handle two args to an option without kludges.  */
 967
 968           /* Enable optimizations of output files.  */
 969           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
 970           break;
 971         case 'o':
 972           lang_add_output (optarg, 0);
 973           break;
 974         case OPTION_OFORMAT:
 975           lang_add_output_format (optarg, NULL, NULL, 0);
 976           break;
 977         case 'q':
 978           link_info.emitrelocations = TRUE;
 979           break;
 980         case 'i':
 981         case 'r':
 982           if (optind == last_optind)
 983             /* This can happen if the user put "-rpath,a" on the command
 984                line.  (Or something similar.  The comma is important).
 985                Getopt becomes confused and thinks that this is a -r option
 986                but it cannot parse the text after the -r so it refuses to
 987                increment the optind counter.  Detect this case and issue
 988                an error message here.  We cannot just make this a warning,
 989                increment optind, and continue because getopt is too confused
 990                and will seg-fault the next time around.  */
 991             einfo(_("%P%F: bad -rpath option\n"));
 992
 993           link_info.relocatable = TRUE;
 994           config.build_constructors = FALSE;
 995           config.magic_demand_paged = FALSE;
 996           config.text_read_only = FALSE;
 997           config.dynamic_link = FALSE;
 998           break;
 999         case 'R':
1000           /* The GNU linker traditionally uses -R to mean to include
1001              only the symbols from a file.  The Solaris linker uses -R
1002              to set the path used by the runtime linker to find
1003              libraries.  This is the GNU linker -rpath argument.  We
1004              try to support both simultaneously by checking the file
1005              named.  If it is a directory, rather than a regular file,
1006              we assume -rpath was meant.  */
1007           {
1008             struct stat s;
1009
1010             if (stat (optarg, &s) >= 0
1011                 && ! S_ISDIR (s.st_mode))
1012               {
1013                 lang_add_input_file (optarg,
1014                                      lang_input_file_is_symbols_only_enum,
1015                                      NULL);
1016                 break;
1017               }
1018           }
1019           /* Fall through.  */
1020         case OPTION_RPATH:
1021           if (command_line.rpath == NULL)
1022             command_line.rpath = xstrdup (optarg);
1023           else
1024             {
1025               size_t rpath_len = strlen (command_line.rpath);
1026               size_t optarg_len = strlen (optarg);
1027               char *buf;
1028               char *cp = command_line.rpath;
1029
1030               /* First see whether OPTARG is already in the path.  */
1031               do
1032                 {
1033                   size_t idx = 0;
1034
1035                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
1036                     ++idx;
1037                   if (optarg[idx] == '\0'
1038                       && (cp[idx] == '\0' || cp[idx] == ':'))
1039                     /* We found it.  */
1040                     break;
1041
1042                   /* Not yet found.  */
1043                   cp = strchr (cp, ':');
1044                   if (cp != NULL)
1045                     ++cp;
1046                 }
1047               while (cp != NULL);
1048
1049               if (cp == NULL)
1050                 {
1051                   buf = xmalloc (rpath_len + optarg_len + 2);
1052                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
1053                   free (command_line.rpath);
1054                   command_line.rpath = buf;
1055                 }
1056             }
1057           break;
1058         case OPTION_RPATH_LINK:
1059           if (command_line.rpath_link == NULL)
1060             command_line.rpath_link = xstrdup (optarg);
1061           else
1062             {
1063               char *buf;
1064
1065               buf = xmalloc (strlen (command_line.rpath_link)
1066                              + strlen (optarg)
1067                              + 2);
1068               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
1069               free (command_line.rpath_link);
1070               command_line.rpath_link = buf;
1071             }
1072           break;
1073         case OPTION_RELAX:
1074           command_line.relax = TRUE;
1075           break;
1076         case OPTION_RETAIN_SYMBOLS_FILE:
1077           add_keepsyms_file (optarg);
1078           break;
1079         case 'S':
1080           link_info.strip = strip_debugger;
1081           break;
1082         case 's':
1083           link_info.strip = strip_all;
1084           break;
1085         case OPTION_STRIP_DISCARDED:
1086           link_info.strip_discarded = TRUE;
1087           break;
1088         case OPTION_NO_STRIP_DISCARDED:
1089           link_info.strip_discarded = FALSE;
1090           break;
1091         case OPTION_SHARED:
1092           if (config.has_shared)
1093             {
1094               link_info.shared = TRUE;
1095               /* When creating a shared library, the default
1096                  behaviour is to ignore any unresolved references.  */
1097               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1098                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1099               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1100                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1101             }
1102           else
1103             einfo (_("%P%F: -shared not supported\n"));
1104           break;
1105         case OPTION_PIE:
1106           if (config.has_shared)
1107             {
1108               link_info.shared = TRUE;
1109               link_info.pie = TRUE;
1110             }
1111           else
1112             einfo (_("%P%F: -pie not supported\n"));
1113           break;
1114         case 'h':               /* Used on Solaris.  */
1115         case OPTION_SONAME:
1116           command_line.soname = optarg;
1117           break;
1118         case OPTION_SORT_COMMON:
1119           config.sort_common = TRUE;
1120           break;
1121         case OPTION_SORT_SECTION:
1122           if (strcmp (optarg, N_("name")) == 0)
1123             sort_section = by_name;
1124           else if (strcmp (optarg, N_("alignment")) == 0)
1125             sort_section = by_alignment;
1126           else
1127             einfo (_("%P%F: invalid section sorting option: %s\n"),
1128                    optarg);
1129           break;
1130         case OPTION_STATS:
1131           config.stats = TRUE;
1132           break;
1133         case OPTION_SYMBOLIC:
1134           link_info.symbolic = TRUE;
1135           break;
1136         case 't':
1137           trace_files = TRUE;
1138           break;
1139         case 'T':
1140           ldfile_open_command_file (optarg);
1141           parser_input = input_script;
1142           yyparse ();
1143           break;
1144         case OPTION_SECTION_START:
1145           {
1146             char *optarg2;
1147             char *sec_name;
1148             int len;
1149
1150             /* Check for <something>=<somthing>...  */
1151             optarg2 = strchr (optarg, '=');
1152             if (optarg2 == NULL)
1153               einfo (_("%P%F: invalid argument to option"
1154                        " \"--section-start\"\n"));
1155
1156             optarg2++;
1157
1158             /* So far so good.  Are all the args present?  */
1159             if ((*optarg == '\0') || (*optarg2 == '\0'))
1160               einfo (_("%P%F: missing argument(s) to option"
1161                        " \"--section-start\"\n"));
1162
1163             /* We must copy the section name as set_section_start
1164                doesn't do it for us.  */
1165             len = optarg2 - optarg;
1166             sec_name = xmalloc (len);
1167             memcpy (sec_name, optarg, len - 1);
1168             sec_name[len - 1] = 0;
1169
1170             /* Then set it...  */
1171             set_section_start (sec_name, optarg2);
1172           }
1173           break;
1174         case OPTION_TARGET_HELP:
1175           /* Mention any target specific options.  */
1176           ldemul_list_emulation_options (stdout);
1177           exit (0);
1178         case OPTION_TBSS:
1179           set_segment_start (".bss", optarg);
1180           break;
1181         case OPTION_TDATA:
1182           set_segment_start (".data", optarg);
1183           break;
1184         case OPTION_TTEXT:
1185           set_segment_start (".text", optarg);
1186           break;
1187         case OPTION_TRADITIONAL_FORMAT:
1188           link_info.traditional_format = TRUE;
1189           break;
1190         case OPTION_TASK_LINK:
1191           link_info.task_link = TRUE;
1192           /* Fall through - do an implied -r option.  */
1193         case OPTION_UR:
1194           link_info.relocatable = TRUE;
1195           config.build_constructors = TRUE;
1196           config.magic_demand_paged = FALSE;
1197           config.text_read_only = FALSE;
1198           config.dynamic_link = FALSE;
1199           break;
1200         case 'u':
1201           ldlang_add_undef (optarg);
1202           break;
1203         case OPTION_UNIQUE:
1204           if (optarg != NULL)
1205             lang_add_unique (optarg);
1206           else
1207             config.unique_orphan_sections = TRUE;
1208           break;
1209         case OPTION_VERBOSE:
1210           ldversion (1);
1211           version_printed = TRUE;
1212           trace_file_tries = TRUE;
1213           overflow_cutoff_limit = -2;
1214           break;
1215         case 'v':
1216           ldversion (0);
1217           version_printed = TRUE;
1218           break;
1219         case 'V':
1220           ldversion (1);
1221           version_printed = TRUE;
1222           break;
1223         case OPTION_VERSION:
1224           ldversion (2);
1225           xexit (0);
1226           break;
1227         case OPTION_VERSION_SCRIPT:
1228           /* This option indicates a small script that only specifies
1229              version information.  Read it, but don't assume that
1230              we've seen a linker script.  */
1231           {
1232             FILE *hold_script_handle;
1233
1234             hold_script_handle = saved_script_handle;
1235             ldfile_open_command_file (optarg);
1236             saved_script_handle = hold_script_handle;
1237             parser_input = input_version_script;
1238             yyparse ();
1239           }
1240           break;
1241         case OPTION_VERSION_EXPORTS_SECTION:
1242           /* This option records a version symbol to be applied to the
1243              symbols listed for export to be found in the object files
1244              .exports sections.  */
1245           command_line.version_exports_section = optarg;
1246           break;
1247         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1248           lang_append_dynamic_list_cpp_typeinfo ();
1249           break;
1250         case OPTION_DYNAMIC_LIST:
1251           /* This option indicates a small script that only specifies
1252              a dynamic list.  Read it, but don't assume that we've
1253              seen a linker script.  */
1254           {
1255             FILE *hold_script_handle;
1256
1257             hold_script_handle = saved_script_handle;
1258             ldfile_open_command_file (optarg);
1259             saved_script_handle = hold_script_handle;
1260             parser_input = input_dynamic_list;
1261             yyparse ();
1262           }
1263           break;
1264         case OPTION_WARN_COMMON:
1265           config.warn_common = TRUE;
1266           break;
1267         case OPTION_WARN_CONSTRUCTORS:
1268           config.warn_constructors = TRUE;
1269           break;
1270         case OPTION_WARN_FATAL:
1271           config.fatal_warnings = TRUE;
1272           break;
1273         case OPTION_WARN_MULTIPLE_GP:
1274           config.warn_multiple_gp = TRUE;
1275           break;
1276         case OPTION_WARN_ONCE:
1277           config.warn_once = TRUE;
1278           break;
1279         case OPTION_WARN_SECTION_ALIGN:
1280           config.warn_section_align = TRUE;
1281           break;
1282         case OPTION_WARN_SHARED_TEXTREL:
1283           link_info.warn_shared_textrel = TRUE;
1284           break;
1285         case OPTION_WHOLE_ARCHIVE:
1286           whole_archive = TRUE;
1287           break;
1288         case OPTION_ADD_NEEDED:
1289           add_needed = TRUE;
1290           break;
1291         case OPTION_NO_ADD_NEEDED:
1292           add_needed = FALSE;
1293           break;
1294         case OPTION_AS_NEEDED:
1295           as_needed = TRUE;
1296           break;
1297         case OPTION_NO_AS_NEEDED:
1298           as_needed = FALSE;
1299           break;
1300         case OPTION_WRAP:
1301           add_wrap (optarg);
1302           break;
1303         case OPTION_DISCARD_NONE:
1304           link_info.discard = discard_none;
1305           break;
1306         case 'X':
1307           link_info.discard = discard_l;
1308           break;
1309         case 'x':
1310           link_info.discard = discard_all;
1311           break;
1312         case 'Y':
1313           if (CONST_STRNEQ (optarg, "P,"))
1314             optarg += 2;
1315           if (default_dirlist != NULL)
1316             free (default_dirlist);
1317           default_dirlist = xstrdup (optarg);
1318           break;
1319         case 'y':
1320           add_ysym (optarg);
1321           break;
1322         case OPTION_SPARE_DYNAMIC_TAGS:
1323           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1324           break;
1325         case OPTION_SPLIT_BY_RELOC:
1326           if (optarg != NULL)
1327             config.split_by_reloc = strtoul (optarg, NULL, 0);
1328           else
1329             config.split_by_reloc = 32768;
1330           break;
1331         case OPTION_SPLIT_BY_FILE:
1332           if (optarg != NULL)
1333             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1334           else
1335             config.split_by_file = 1;
1336           break;
1337         case OPTION_CHECK_SECTIONS:
1338           command_line.check_section_addresses = TRUE;
1339           break;
1340         case OPTION_NO_CHECK_SECTIONS:
1341           command_line.check_section_addresses = FALSE;
1342           break;
1343         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1344           command_line.accept_unknown_input_arch = TRUE;
1345           break;
1346         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1347           command_line.accept_unknown_input_arch = FALSE;
1348           break;
1349         case '(':
1350           if (ingroup)
1351             einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1352
1353           lang_enter_group ();
1354           ingroup = 1;
1355           break;
1356         case ')':
1357           if (! ingroup)
1358             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1359
1360           lang_leave_group ();
1361           ingroup = 0;
1362           break;
1363
1364         case OPTION_INIT:
1365           link_info.init_function = optarg;
1366           break;
1367
1368         case OPTION_FINI:
1369           link_info.fini_function = optarg;
1370           break;
1371
1372         case OPTION_REDUCE_MEMORY_OVERHEADS:
1373           link_info.reduce_memory_overheads = TRUE;
1374           if (config.hash_table_size == 0)
1375             config.hash_table_size = 1021;
1376           break;
1377
1378         case OPTION_HASH_SIZE:
1379           {
1380             bfd_size_type new_size;
1381
1382             new_size = strtoul (optarg, NULL, 0);
1383             if (new_size)
1384               config.hash_table_size = new_size;
1385             else
1386               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1387           }
1388           break;
1389         }
1390     }
1391
1392   if (ingroup)
1393     lang_leave_group ();
1394
1395   if (default_dirlist != NULL)
1396     {
1397       set_default_dirlist (default_dirlist);
1398       free (default_dirlist);
1399     }
1400
1401   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1402     /* FIXME: Should we allow emulations a chance to set this ?  */
1403     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1404
1405   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1406     /* FIXME: Should we allow emulations a chance to set this ?  */
1407     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1408 }
1409
1410 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1411    library search path.  */
1412
1413 static void
1414 set_default_dirlist (char *dirlist_ptr)
1415 {
1416   char *p;
1417
1418   while (1)
1419     {
1420       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1421       if (p != NULL)
1422         *p = '\0';
1423       if (*dirlist_ptr != '\0')
1424         ldfile_add_library_path (dirlist_ptr, TRUE);
1425       if (p == NULL)
1426         break;
1427       dirlist_ptr = p + 1;
1428     }
1429 }
1430
1431 static void
1432 set_section_start (char *sect, char *valstr)
1433 {
1434   const char *end;
1435   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1436   if (*end)
1437     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1438   lang_section_start (sect, exp_intop (val), NULL);
1439 }
1440
1441 static void
1442 set_segment_start (const char *section, char *valstr)
1443 {
1444   const char *name;
1445   const char *end;
1446   segment_type *seg;
1447
1448   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1449   if (*end)
1450     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1451   /* If we already have an entry for this segment, update the existing
1452      value.  */
1453   name = section + 1;
1454   for (seg = segments; seg; seg = seg->next)
1455     if (strcmp (seg->name, name) == 0)
1456       {
1457         seg->value = val;
1458         return;
1459       }
1460   /* There was no existing value so we must create a new segment
1461      entry.  */
1462   seg = stat_alloc (sizeof (*seg));
1463   seg->name = name;
1464   seg->value = val;
1465   seg->used = FALSE;
1466   /* Add it to the linked list of segments.  */
1467   seg->next = segments;
1468   segments = seg;
1469   /* Historically, -Ttext and friends set the base address of a
1470      particular section.  For backwards compatibility, we still do
1471      that.  If a SEGMENT_START directive is seen, the section address
1472      assignment will be disabled.  */
1473   lang_section_start (section, exp_intop (val), seg);
1474 }
1475
1476 \f
1477 /* Print help messages for the options.  */
1478
1479 static void
1480 help (void)
1481 {
1482   unsigned i;
1483   const char **targets, **pp;
1484   int len;
1485
1486   printf (_("Usage: %s [options] file...\n"), program_name);
1487
1488   printf (_("Options:\n"));
1489   for (i = 0; i < OPTION_COUNT; i++)
1490     {
1491       if (ld_options[i].doc != NULL)
1492         {
1493           bfd_boolean comma;
1494           unsigned j;
1495
1496           printf ("  ");
1497
1498           comma = FALSE;
1499           len = 2;
1500
1501           j = i;
1502           do
1503             {
1504               if (ld_options[j].shortopt != '\0'
1505                   && ld_options[j].control != NO_HELP)
1506                 {
1507                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1508                   len += (comma ? 2 : 0) + 2;
1509                   if (ld_options[j].arg != NULL)
1510                     {
1511                       if (ld_options[j].opt.has_arg != optional_argument)
1512                         {
1513                           printf (" ");
1514                           ++len;
1515                         }
1516                       printf ("%s", _(ld_options[j].arg));
1517                       len += strlen (_(ld_options[j].arg));
1518                     }
1519                   comma = TRUE;
1520                 }
1521               ++j;
1522             }
1523           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1524
1525           j = i;
1526           do
1527             {
1528               if (ld_options[j].opt.name != NULL
1529                   && ld_options[j].control != NO_HELP)
1530                 {
1531                   int two_dashes =
1532                     (ld_options[j].control == TWO_DASHES
1533                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1534
1535                   printf ("%s-%s%s",
1536                           comma ? ", " : "",
1537                           two_dashes ? "-" : "",
1538                           ld_options[j].opt.name);
1539                   len += ((comma ? 2 : 0)
1540                           + 1
1541                           + (two_dashes ? 1 : 0)
1542                           + strlen (ld_options[j].opt.name));
1543                   if (ld_options[j].arg != NULL)
1544                     {
1545                       printf (" %s", _(ld_options[j].arg));
1546                       len += 1 + strlen (_(ld_options[j].arg));
1547                     }
1548                   comma = TRUE;
1549                 }
1550               ++j;
1551             }
1552           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1553
1554           if (len >= 30)
1555             {
1556               printf ("\n");
1557               len = 0;
1558             }
1559
1560           for (; len < 30; len++)
1561             putchar (' ');
1562
1563           printf ("%s\n", _(ld_options[i].doc));
1564         }
1565     }
1566   printf (_("  @FILE"));
1567   for (len = strlen ("  @FILE"); len < 30; len++)
1568     putchar (' ');
1569   printf (_("Read options from FILE\n"));
1570
1571   /* Note: Various tools (such as libtool) depend upon the
1572      format of the listings below - do not change them.  */
1573   /* xgettext:c-format */
1574   printf (_("%s: supported targets:"), program_name);
1575   targets = bfd_target_list ();
1576   for (pp = targets; *pp != NULL; pp++)
1577     printf (" %s", *pp);
1578   free (targets);
1579   printf ("\n");
1580
1581   /* xgettext:c-format */
1582   printf (_("%s: supported emulations: "), program_name);
1583   ldemul_list_emulations (stdout);
1584   printf ("\n");
1585
1586   /* xgettext:c-format */
1587   printf (_("%s: emulation specific options:\n"), program_name);
1588   ldemul_list_emulation_options (stdout);
1589   printf ("\n");
1590
1591   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1592 }