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_NEW,
 112   OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
 113   OPTION_DYNAMIC_LIST_DATA,
 114   OPTION_WARN_COMMON,
 115   OPTION_WARN_CONSTRUCTORS,
 116   OPTION_WARN_FATAL,
 117   OPTION_WARN_MULTIPLE_GP,
 118   OPTION_WARN_ONCE,
 119   OPTION_WARN_SECTION_ALIGN,
 120   OPTION_SPLIT_BY_RELOC,
 121   OPTION_SPLIT_BY_FILE ,
 122   OPTION_WHOLE_ARCHIVE,
 123   OPTION_ADD_NEEDED,
 124   OPTION_NO_ADD_NEEDED,
 125   OPTION_AS_NEEDED,
 126   OPTION_NO_AS_NEEDED,
 127   OPTION_WRAP,
 128   OPTION_FORCE_EXE_SUFFIX,
 129   OPTION_GC_SECTIONS,
 130   OPTION_NO_GC_SECTIONS,
 131   OPTION_PRINT_GC_SECTIONS,
 132   OPTION_NO_PRINT_GC_SECTIONS,
 133   OPTION_HASH_SIZE,
 134   OPTION_CHECK_SECTIONS,
 135   OPTION_NO_CHECK_SECTIONS,
 136   OPTION_NO_UNDEFINED,
 137   OPTION_INIT,
 138   OPTION_FINI,
 139   OPTION_SECTION_START,
 140   OPTION_UNIQUE,
 141   OPTION_TARGET_HELP,
 142   OPTION_ALLOW_SHLIB_UNDEFINED,
 143   OPTION_NO_ALLOW_SHLIB_UNDEFINED,
 144   OPTION_ALLOW_MULTIPLE_DEFINITION,
 145   OPTION_NO_UNDEFINED_VERSION,
 146   OPTION_DEFAULT_SYMVER,
 147   OPTION_DEFAULT_IMPORTED_SYMVER,
 148   OPTION_DISCARD_NONE,
 149   OPTION_SPARE_DYNAMIC_TAGS,
 150   OPTION_NO_DEFINE_COMMON,
 151   OPTION_NOSTDLIB,
 152   OPTION_NO_OMAGIC,
 153   OPTION_STRIP_DISCARDED,
 154   OPTION_NO_STRIP_DISCARDED,
 155   OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
 156   OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
 157   OPTION_PIE,
 158   OPTION_UNRESOLVED_SYMBOLS,
 159   OPTION_WARN_UNRESOLVED_SYMBOLS,
 160   OPTION_ERROR_UNRESOLVED_SYMBOLS,
 161   OPTION_WARN_SHARED_TEXTREL,
 162   OPTION_REDUCE_MEMORY_OVERHEADS
 163 };
 164
 165 /* The long options.  This structure is used for both the option
 166    parsing and the help text.  */
 167
 168 struct ld_option
 169 {
 170   /* The long option information.  */
 171   struct option opt;
 172   /* The short option with the same meaning ('\0' if none).  */
 173   char shortopt;
 174   /* The name of the argument (NULL if none).  */
 175   const char *arg;
 176   /* The documentation string.  If this is NULL, this is a synonym for
 177      the previous option.  */
 178   const char *doc;
 179   enum {
 180     /* Use one dash before long option name.  */
 181     ONE_DASH,
 182     /* Use two dashes before long option name.  */
 183     TWO_DASHES,
 184     /* Only accept two dashes before the long option name.
 185        This is an overloading of the use of this enum, since originally it
 186        was only intended to tell the --help display function how to display
 187        the long option name.  This feature was added in order to resolve
 188        the confusion about the -omagic command line switch.  Is it setting
 189        the output file name to "magic" or is it setting the NMAGIC flag on
 190        the output ?  It has been decided that it is setting the output file
 191        name, and that if you want to set the NMAGIC flag you should use -N
 192        or --omagic.  */
 193     EXACTLY_TWO_DASHES,
 194     /* Don't mention this option in --help output.  */
 195     NO_HELP
 196   } control;
 197 };
 198
 199 static const struct ld_option ld_options[] =
 200 {
 201   { {NULL, required_argument, NULL, '\0'},
 202     'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
 203     ONE_DASH },
 204   { {"architecture", required_argument, NULL, 'A'},
 205     'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
 206   { {"format", required_argument, NULL, 'b'},
 207     'b', N_("TARGET"), N_("Specify target for following input files"),
 208     TWO_DASHES },
 209   { {"mri-script", required_argument, NULL, 'c'},
 210     'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
 211   { {"dc", no_argument, NULL, 'd'},
 212     'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
 213   { {"dp", no_argument, NULL, 'd'},
 214     '\0', NULL, NULL, ONE_DASH },
 215   { {"entry", required_argument, NULL, 'e'},
 216     'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
 217   { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
 218     'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
 219   { {"EB", no_argument, NULL, OPTION_EB},
 220     '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
 221   { {"EL", no_argument, NULL, OPTION_EL},
 222     '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
 223   { {"auxiliary", required_argument, NULL, 'f'},
 224     'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
 225     TWO_DASHES },
 226   { {"filter", required_argument, NULL, 'F'},
 227     'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
 228     TWO_DASHES },
 229   { {NULL, no_argument, NULL, '\0'},
 230     'g', NULL, N_("Ignored"), ONE_DASH },
 231   { {"gpsize", required_argument, NULL, 'G'},
 232     'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
 233     TWO_DASHES },
 234   { {"soname", required_argument, NULL, OPTION_SONAME},
 235     'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
 236   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
 237     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
 238     TWO_DASHES },
 239   { {"library", required_argument, NULL, 'l'},
 240     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
 241   { {"library-path", required_argument, NULL, 'L'},
 242     'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
 243     TWO_DASHES },
 244   { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
 245     '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
 246   { {NULL, required_argument, NULL, '\0'},
 247     'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
 248   { {"print-map", no_argument, NULL, 'M'},
 249     'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
 250   { {"nmagic", no_argument, NULL, 'n'},
 251     'n', NULL, N_("Do not page align data"), TWO_DASHES },
 252   { {"omagic", no_argument, NULL, 'N'},
 253     'N', NULL, N_("Do not page align data, do not make text readonly"),
 254     EXACTLY_TWO_DASHES },
 255   { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
 256     '\0', NULL, N_("Page align data, make text readonly"),
 257     EXACTLY_TWO_DASHES },
 258   { {"output", required_argument, NULL, 'o'},
 259     'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
 260   { {NULL, required_argument, NULL, '\0'},
 261     'O', NULL, N_("Optimize output file"), ONE_DASH },
 262   { {"Qy", no_argument, NULL, OPTION_IGNORE},
 263     '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
 264   { {"emit-relocs", no_argument, NULL, 'q'},
 265     'q', NULL, "Generate relocations in final output", TWO_DASHES },
 266   { {"relocatable", no_argument, NULL, 'r'},
 267     'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
 268   { {NULL, no_argument, NULL, '\0'},
 269     'i', NULL, NULL, ONE_DASH },
 270   { {"just-symbols", required_argument, NULL, 'R'},
 271     'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
 272     TWO_DASHES },
 273   { {"strip-all", no_argument, NULL, 's'},
 274     's', NULL, N_("Strip all symbols"), TWO_DASHES },
 275   { {"strip-debug", no_argument, NULL, 'S'},
 276     'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
 277   { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
 278     '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
 279   { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
 280     '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
 281   { {"trace", no_argument, NULL, 't'},
 282     't', NULL, N_("Trace file opens"), TWO_DASHES },
 283   { {"script", required_argument, NULL, 'T'},
 284     'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
 285   { {"undefined", required_argument, NULL, 'u'},
 286     'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
 287     TWO_DASHES },
 288   { {"unique", optional_argument, NULL, OPTION_UNIQUE},
 289     '\0', N_("[=SECTION]"),
 290     N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
 291   { {"Ur", no_argument, NULL, OPTION_UR},
 292     '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
 293   { {"version", no_argument, NULL, OPTION_VERSION},
 294     'v', NULL, N_("Print version information"), TWO_DASHES },
 295   { {NULL, no_argument, NULL, '\0'},
 296     'V', NULL, N_("Print version and emulation information"), ONE_DASH },
 297   { {"discard-all", no_argument, NULL, 'x'},
 298     'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
 299   { {"discard-locals", no_argument, NULL, 'X'},
 300     'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
 301   { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
 302     '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
 303   { {"trace-symbol", required_argument, NULL, 'y'},
 304     'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
 305   { {NULL, required_argument, NULL, '\0'},
 306     'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
 307     ONE_DASH },
 308   { {"start-group", no_argument, NULL, '('},
 309     '(', NULL, N_("Start a group"), TWO_DASHES },
 310   { {"end-group", no_argument, NULL, ')'},
 311     ')', NULL, N_("End a group"), TWO_DASHES },
 312   { {"accept-unknown-input-arch", no_argument, NULL,
 313      OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
 314     '\0', NULL,
 315     N_("Accept input files whose architecture cannot be determined"),
 316     TWO_DASHES },
 317   { {"no-accept-unknown-input-arch", no_argument, NULL,
 318      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
 319     '\0', NULL, N_("Reject input files whose architecture is unknown"),
 320     TWO_DASHES },
 321   { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
 322     '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
 323                    "\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
 324   { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
 325     '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
 326                    "\t\t\t\tin following dynamic libs"), TWO_DASHES },
 327   { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
 328     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
 329     TWO_DASHES },
 330   { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
 331     '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
 332     TWO_DASHES },
 333   { {"assert", required_argument, NULL, OPTION_ASSERT},
 334     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
 335   { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
 336     '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
 337   { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
 338     '\0', NULL, NULL, ONE_DASH },
 339   { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
 340     '\0', NULL, NULL, ONE_DASH },
 341   { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
 342     '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
 343   { {"dn", no_argument, NULL, OPTION_NON_SHARED},
 344     '\0', NULL, NULL, ONE_DASH },
 345   { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
 346     '\0', NULL, NULL, ONE_DASH },
 347   { {"static", no_argument, NULL, OPTION_NON_SHARED},
 348     '\0', NULL, NULL, ONE_DASH },
 349   { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
 350     '\0', NULL, N_("Bind global references locally"), ONE_DASH },
 351   { {"Bsymbolic-functions", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 352     '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
 353   { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
 354     '\0', NULL, N_("Check section addresses for overlaps (default)"),
 355     TWO_DASHES },
 356   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
 357     '\0', NULL, N_("Do not check section addresses for overlaps"),
 358     TWO_DASHES },
 359   { {"cref", no_argument, NULL, OPTION_CREF},
 360     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
 361   { {"defsym", required_argument, NULL, OPTION_DEFSYM},
 362     '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
 363   { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
 364     '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
 365     TWO_DASHES },
 366   { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
 367     '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
 368   { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
 369     '\0', NULL, N_("Treat warnings as errors"),
 370     TWO_DASHES },
 371   { {"fini", required_argument, NULL, OPTION_FINI},
 372     '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
 373   { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
 374     '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
 375   { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
 376     '\0', NULL, N_("Remove unused sections (on some targets)"),
 377     TWO_DASHES },
 378   { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
 379     '\0', NULL, N_("Don't remove unused sections (default)"),
 380     TWO_DASHES },
 381   { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
 382     '\0', NULL, N_("List removed unused sections on stderr"),
 383     TWO_DASHES },
 384   { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
 385     '\0', NULL, N_("Do not list removed unused sections"),
 386     TWO_DASHES },
 387   { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
 388     '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
 389     TWO_DASHES },
 390   { {"help", no_argument, NULL, OPTION_HELP},
 391     '\0', NULL, N_("Print option help"), TWO_DASHES },
 392   { {"init", required_argument, NULL, OPTION_INIT},
 393     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
 394   { {"Map", required_argument, NULL, OPTION_MAP},
 395     '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
 396   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
 397     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
 398   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
 399     '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
 400   { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
 401     '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
 402   { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
 403     '\0', NULL, N_("Do not allow unresolved references in object files"),
 404     TWO_DASHES },
 405   { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
 406     '\0', NULL, N_("Allow unresolved references in shared libaries"),
 407     TWO_DASHES },
 408   { {"no-allow-shlib-undefined", no_argument, NULL,
 409      OPTION_NO_ALLOW_SHLIB_UNDEFINED},
 410     '\0', NULL, N_("Do not allow unresolved references in shared libs"),
 411     TWO_DASHES },
 412   { {"allow-multiple-definition", no_argument, NULL,
 413      OPTION_ALLOW_MULTIPLE_DEFINITION},
 414     '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
 415   { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
 416     '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
 417   { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
 418     '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
 419   { {"default-imported-symver", no_argument, NULL,
 420       OPTION_DEFAULT_IMPORTED_SYMVER},
 421     '\0', NULL, N_("Create default symbol version for imported symbols"),
 422     TWO_DASHES },
 423   { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
 424     '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
 425   { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
 426     '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
 427   { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 428     '\0', NULL, N_("Create an output file even if errors occur"),
 429     TWO_DASHES },
 430   { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
 431     '\0', NULL, NULL, NO_HELP },
 432   { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
 433     '\0', NULL, N_("Only use library directories specified on\n"
 434                    "\t\t\t\tthe command line"), ONE_DASH },
 435   { {"oformat", required_argument, NULL, OPTION_OFORMAT},
 436     '\0', N_("TARGET"), N_("Specify target of output file"),
 437     EXACTLY_TWO_DASHES },
 438   { {"qmagic", no_argument, NULL, OPTION_IGNORE},
 439     '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
 440   { {"reduce-memory-overheads", no_argument, NULL,
 441      OPTION_REDUCE_MEMORY_OVERHEADS},
 442     '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
 443     TWO_DASHES },
 444   { {"relax", no_argument, NULL, OPTION_RELAX},
 445     '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
 446   { {"retain-symbols-file", required_argument, NULL,
 447      OPTION_RETAIN_SYMBOLS_FILE},
 448     '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
 449   { {"rpath", required_argument, NULL, OPTION_RPATH},
 450     '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
 451   { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
 452     '\0', N_("PATH"), N_("Set link time shared library search path"),
 453     ONE_DASH },
 454   { {"shared", no_argument, NULL, OPTION_SHARED},
 455     '\0', NULL, N_("Create a shared library"), ONE_DASH },
 456   { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD.  */
 457     '\0', NULL, NULL, ONE_DASH },
 458   { {"pie", no_argument, NULL, OPTION_PIE},
 459     '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
 460   { {"pic-executable", no_argument, NULL, OPTION_PIE},
 461     '\0', NULL, NULL, TWO_DASHES },
 462   { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
 463     '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
 464   { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
 465     '\0', NULL, NULL, NO_HELP },
 466   { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
 467     '\0', N_("name|alignment"),
 468     N_("Sort sections by name or maximum alignment"), TWO_DASHES },
 469   { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
 470     '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
 471     TWO_DASHES },
 472   { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
 473     '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
 474     TWO_DASHES },
 475   { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
 476     '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
 477     TWO_DASHES },
 478   { {"stats", no_argument, NULL, OPTION_STATS},
 479     '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
 480   { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
 481     '\0', NULL, N_("Display target specific options"), TWO_DASHES },
 482   { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
 483     '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
 484   { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
 485     '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
 486   { {"section-start", required_argument, NULL, OPTION_SECTION_START},
 487     '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
 488     TWO_DASHES },
 489   { {"Tbss", required_argument, NULL, OPTION_TBSS},
 490     '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
 491   { {"Tdata", required_argument, NULL, OPTION_TDATA},
 492     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
 493   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
 494     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
 495   { {"unresolved-symbols=<method>", required_argument, NULL,
 496      OPTION_UNRESOLVED_SYMBOLS},
 497     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
 498                    "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n"
 499                    "\t\t\t\tignore-in-shared-libs"), TWO_DASHES },
 500   { {"verbose", no_argument, NULL, OPTION_VERBOSE},
 501     '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
 502   { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux.  */
 503     '\0', NULL, NULL, NO_HELP },
 504   { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
 505     '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
 506   { {"version-exports-section", required_argument, NULL,
 507      OPTION_VERSION_EXPORTS_SECTION },
 508     '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
 509                            "\t\t\t\tSYMBOL as the version."), TWO_DASHES },
 510   { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
 511     '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
 512   { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
 513     '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
 514   { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
 515     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
 516   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
 517     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
 518   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
 519     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
 520   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
 521     '\0', NULL, N_("Warn if global constructors/destructors are seen"),
 522     TWO_DASHES },
 523   { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
 524     '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
 525   { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
 526     '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
 527   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
 528     '\0', NULL, N_("Warn if start of section changes due to alignment"),
 529     TWO_DASHES },
 530   { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
 531     '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
 532     TWO_DASHES },
 533   { {"warn-unresolved-symbols", no_argument, NULL,
 534      OPTION_WARN_UNRESOLVED_SYMBOLS},
 535     '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
 536   { {"error-unresolved-symbols", no_argument, NULL,
 537      OPTION_ERROR_UNRESOLVED_SYMBOLS},
 538     '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
 539   { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
 540     '\0', NULL, N_("Include all objects from following archives"),
 541     TWO_DASHES },
 542   { {"wrap", required_argument, NULL, OPTION_WRAP},
 543     '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
 544 };
 545
 546 #define OPTION_COUNT ARRAY_SIZE (ld_options)
 547
 548 void
 549 parse_args (unsigned argc, char **argv)
 550 {
 551   unsigned i;
 552   int is, il, irl;
 553   int ingroup = 0;
 554   char *default_dirlist = NULL;
 555   char *shortopts;
 556   struct option *longopts;
 557   struct option *really_longopts;
 558   int last_optind;
 559   enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 560
 561   shortopts = xmalloc (OPTION_COUNT * 3 + 2);
 562   longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
 563   really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
 564
 565   /* Starting the short option string with '-' is for programs that
 566      expect options and other ARGV-elements in any order and that care about
 567      the ordering of the two.  We describe each non-option ARGV-element
 568      as if it were the argument of an option with character code 1.  */
 569   shortopts[0] = '-';
 570   is = 1;
 571   il = 0;
 572   irl = 0;
 573   for (i = 0; i < OPTION_COUNT; i++)
 574     {
 575       if (ld_options[i].shortopt != '\0')
 576         {
 577           shortopts[is] = ld_options[i].shortopt;
 578           ++is;
 579           if (ld_options[i].opt.has_arg == required_argument
 580               || ld_options[i].opt.has_arg == optional_argument)
 581             {
 582               shortopts[is] = ':';
 583               ++is;
 584               if (ld_options[i].opt.has_arg == optional_argument)
 585                 {
 586                   shortopts[is] = ':';
 587                   ++is;
 588                 }
 589             }
 590         }
 591       if (ld_options[i].opt.name != NULL)
 592         {
 593           if (ld_options[i].control == EXACTLY_TWO_DASHES)
 594             {
 595               really_longopts[irl] = ld_options[i].opt;
 596               ++irl;
 597             }
 598           else
 599             {
 600               longopts[il] = ld_options[i].opt;
 601               ++il;
 602             }
 603         }
 604     }
 605   shortopts[is] = '\0';
 606   longopts[il].name = NULL;
 607   really_longopts[irl].name = NULL;
 608
 609   ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
 610
 611   /* The -G option is ambiguous on different platforms.  Sometimes it
 612      specifies the largest data size to put into the small data
 613      section.  Sometimes it is equivalent to --shared.  Unfortunately,
 614      the first form takes an argument, while the second does not.
 615
 616      We need to permit the --shared form because on some platforms,
 617      such as Solaris, gcc -shared will pass -G to the linker.
 618
 619      To permit either usage, we look through the argument list.  If we
 620      find -G not followed by a number, we change it into --shared.
 621      This will work for most normal cases.  */
 622   for (i = 1; i < argc; i++)
 623     if (strcmp (argv[i], "-G") == 0
 624         && (i + 1 >= argc
 625             || ! ISDIGIT (argv[i + 1][0])))
 626       argv[i] = (char *) "--shared";
 627
 628   /* Because we permit long options to start with a single dash, and
 629      we have a --library option, and the -l option is conventionally
 630      used with an immediately following argument, we can have bad
 631      results if somebody tries to use -l with a library whose name
 632      happens to start with "ibrary", as in -li.  We avoid problems by
 633      simply turning -l into --library.  This means that users will
 634      have to use two dashes in order to use --library, which is OK
 635      since that's how it is documented.
 636
 637      FIXME: It's possible that this problem can arise for other short
 638      options as well, although the user does always have the recourse
 639      of adding a space between the option and the argument.  */
 640   for (i = 1; i < argc; i++)
 641     {
 642       if (argv[i][0] == '-'
 643           && argv[i][1] == 'l'
 644           && argv[i][2] != '\0')
 645         {
 646           char *n;
 647
 648           n = xmalloc (strlen (argv[i]) + 20);
 649           sprintf (n, "--library=%s", argv[i] + 2);
 650           argv[i] = n;
 651         }
 652     }
 653
 654   last_optind = -1;
 655   while (1)
 656     {
 657       int longind;
 658       int optc;
 659
 660       /* Using last_optind lets us avoid calling ldemul_parse_args
 661          multiple times on a single option, which would lead to
 662          confusion in the internal static variables maintained by
 663          getopt.  This could otherwise happen for an argument like
 664          -nx, in which the -n is parsed as a single option, and we
 665          loop around to pick up the -x.  */
 666       if (optind != last_optind)
 667         if (ldemul_parse_args (argc, argv))
 668           continue;
 669
 670       /* getopt_long_only is like getopt_long, but '-' as well as '--'
 671          can indicate a long option.  */
 672       opterr = 0;
 673       last_optind = optind;
 674       optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
 675       if (optc == '?')
 676         {
 677           optind = last_optind;
 678           optc = getopt_long (argc, argv, "-", really_longopts, &longind);
 679         }
 680
 681       if (ldemul_handle_option (optc))
 682         continue;
 683
 684       if (optc == -1)
 685         break;
 686
 687       switch (optc)
 688         {
 689         case '?':
 690           einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
 691           /* Fall through.  */
 692
 693         default:
 694           einfo (_("%P%F: use the --help option for usage information\n"));
 695
 696         case 1:                 /* File name.  */
 697           lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
 698           break;
 699
 700         case OPTION_IGNORE:
 701           break;
 702         case 'a':
 703           /* For HP/UX compatibility.  Actually -a shared should mean
 704              ``use only shared libraries'' but, then, we don't
 705              currently support shared libraries on HP/UX anyhow.  */
 706           if (strcmp (optarg, "archive") == 0)
 707             config.dynamic_link = FALSE;
 708           else if (strcmp (optarg, "shared") == 0
 709                    || strcmp (optarg, "default") == 0)
 710             config.dynamic_link = TRUE;
 711           else
 712             einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
 713           break;
 714         case OPTION_ASSERT:
 715           /* FIXME: We just ignore these, but we should handle them.  */
 716           if (strcmp (optarg, "definitions") == 0)
 717             ;
 718           else if (strcmp (optarg, "nodefinitions") == 0)
 719             ;
 720           else if (strcmp (optarg, "nosymbolic") == 0)
 721             ;
 722           else if (strcmp (optarg, "pure-text") == 0)
 723             ;
 724           else
 725             einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
 726           break;
 727         case 'A':
 728           ldfile_add_arch (optarg);
 729           break;
 730         case 'b':
 731           lang_add_target (optarg);
 732           break;
 733         case 'c':
 734           ldfile_open_command_file (optarg);
 735           parser_input = input_mri_script;
 736           yyparse ();
 737           break;
 738         case OPTION_CALL_SHARED:
 739           config.dynamic_link = TRUE;
 740           break;
 741         case OPTION_NON_SHARED:
 742           config.dynamic_link = FALSE;
 743           break;
 744         case OPTION_CREF:
 745           command_line.cref = TRUE;
 746           link_info.notice_all = TRUE;
 747           break;
 748         case 'd':
 749           command_line.force_common_definition = TRUE;
 750           break;
 751         case OPTION_DEFSYM:
 752           lex_string = optarg;
 753           lex_redirect (optarg);
 754           parser_input = input_defsym;
 755           parsing_defsym = 1;
 756           yyparse ();
 757           parsing_defsym = 0;
 758           lex_string = NULL;
 759           break;
 760         case OPTION_DEMANGLE:
 761           demangling = TRUE;
 762           if (optarg != NULL)
 763             {
 764               enum demangling_styles style;
 765
 766               style = cplus_demangle_name_to_style (optarg);
 767               if (style == unknown_demangling)
 768                 einfo (_("%F%P: unknown demangling style `%s'"),
 769                        optarg);
 770
 771               cplus_demangle_set_style (style);
 772             }
 773           break;
 774         case 'I':               /* Used on Solaris.  */
 775         case OPTION_DYNAMIC_LINKER:
 776           command_line.interpreter = optarg;
 777           break;
 778         case OPTION_SYSROOT:
 779           /* Already handled in ldmain.c.  */
 780           break;
 781         case OPTION_EB:
 782           command_line.endian = ENDIAN_BIG;
 783           break;
 784         case OPTION_EL:
 785           command_line.endian = ENDIAN_LITTLE;
 786           break;
 787         case OPTION_EMBEDDED_RELOCS:
 788           command_line.embedded_relocs = TRUE;
 789           break;
 790         case OPTION_EXPORT_DYNAMIC:
 791         case 'E': /* HP/UX compatibility.  */
 792           link_info.export_dynamic = TRUE;
 793           break;
 794         case 'e':
 795           lang_add_entry (optarg, TRUE);
 796           break;
 797         case 'f':
 798           if (command_line.auxiliary_filters == NULL)
 799             {
 800               command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
 801               command_line.auxiliary_filters[0] = optarg;
 802               command_line.auxiliary_filters[1] = NULL;
 803             }
 804           else
 805             {
 806               int c;
 807               char **p;
 808
 809               c = 0;
 810               for (p = command_line.auxiliary_filters; *p != NULL; p++)
 811                 ++c;
 812               command_line.auxiliary_filters
 813                 = xrealloc (command_line.auxiliary_filters,
 814                             (c + 2) * sizeof (char *));
 815               command_line.auxiliary_filters[c] = optarg;
 816               command_line.auxiliary_filters[c + 1] = NULL;
 817             }
 818           break;
 819         case 'F':
 820           command_line.filter_shlib = optarg;
 821           break;
 822         case OPTION_FORCE_EXE_SUFFIX:
 823           command_line.force_exe_suffix = TRUE;
 824           break;
 825         case 'G':
 826           {
 827             char *end;
 828             g_switch_value = strtoul (optarg, &end, 0);
 829             if (*end)
 830               einfo (_("%P%F: invalid number `%s'\n"), optarg);
 831           }
 832           break;
 833         case 'g':
 834           /* Ignore.  */
 835           break;
 836         case OPTION_GC_SECTIONS:
 837           link_info.gc_sections = TRUE;
 838           break;
 839         case OPTION_PRINT_GC_SECTIONS:
 840           link_info.print_gc_sections = TRUE;
 841           break;
 842         case OPTION_HELP:
 843           help ();
 844           xexit (0);
 845           break;
 846         case 'L':
 847           ldfile_add_library_path (optarg, TRUE);
 848           break;
 849         case 'l':
 850           lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
 851           break;
 852         case 'M':
 853           config.map_filename = "-";
 854           break;
 855         case 'm':
 856           /* Ignore.  Was handled in a pre-parse.   */
 857           break;
 858         case OPTION_MAP:
 859           config.map_filename = optarg;
 860           break;
 861         case 'N':
 862           config.text_read_only = FALSE;
 863           config.magic_demand_paged = FALSE;
 864           config.dynamic_link = FALSE;
 865           break;
 866         case OPTION_NO_OMAGIC:
 867           config.text_read_only = TRUE;
 868           config.magic_demand_paged = TRUE;
 869           /* NB/ Does not set dynamic_link to TRUE.
 870              Use --call-shared or -Bdynamic for this.  */
 871           break;
 872         case 'n':
 873           config.magic_demand_paged = FALSE;
 874           config.dynamic_link = FALSE;
 875           break;
 876         case OPTION_NO_DEFINE_COMMON:
 877           command_line.inhibit_common_definition = TRUE;
 878           break;
 879         case OPTION_NO_DEMANGLE:
 880           demangling = FALSE;
 881           break;
 882         case OPTION_NO_GC_SECTIONS:
 883           link_info.gc_sections = FALSE;
 884           break;
 885         case OPTION_NO_PRINT_GC_SECTIONS:
 886           link_info.print_gc_sections = FALSE;
 887           break;
 888         case OPTION_NO_KEEP_MEMORY:
 889           link_info.keep_memory = FALSE;
 890           break;
 891         case OPTION_NO_UNDEFINED:
 892           link_info.unresolved_syms_in_objects
 893             = how_to_report_unresolved_symbols;
 894           break;
 895         case OPTION_ALLOW_SHLIB_UNDEFINED:
 896           link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 897           break;
 898         case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
 899           link_info.unresolved_syms_in_shared_libs
 900             = how_to_report_unresolved_symbols;
 901           break;
 902         case OPTION_UNRESOLVED_SYMBOLS:
 903           if (strcmp (optarg, "ignore-all") == 0)
 904             {
 905               link_info.unresolved_syms_in_objects = RM_IGNORE;
 906               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 907             }
 908           else if (strcmp (optarg, "report-all") == 0)
 909             {
 910               link_info.unresolved_syms_in_objects
 911                 = how_to_report_unresolved_symbols;
 912               link_info.unresolved_syms_in_shared_libs
 913                 = how_to_report_unresolved_symbols;
 914             }
 915           else if (strcmp (optarg, "ignore-in-object-files") == 0)
 916             {
 917               link_info.unresolved_syms_in_objects = RM_IGNORE;
 918               link_info.unresolved_syms_in_shared_libs
 919                 = how_to_report_unresolved_symbols;
 920             }
 921           else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
 922             {
 923               link_info.unresolved_syms_in_objects
 924                 = how_to_report_unresolved_symbols;
 925               link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
 926             }
 927           else
 928             einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
 929           break;
 930         case OPTION_WARN_UNRESOLVED_SYMBOLS:
 931           how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
 932           if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
 933             link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
 934           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
 935             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
 936           break;
 937
 938         case OPTION_ERROR_UNRESOLVED_SYMBOLS:
 939           how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
 940           if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
 941             link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
 942           if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
 943             link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
 944           break;
 945         case OPTION_ALLOW_MULTIPLE_DEFINITION:
 946           link_info.allow_multiple_definition = TRUE;
 947           break;
 948         case OPTION_NO_UNDEFINED_VERSION:
 949           link_info.allow_undefined_version = FALSE;
 950           break;
 951         case OPTION_DEFAULT_SYMVER:
 952           link_info.create_default_symver = TRUE;
 953           break;
 954         case OPTION_DEFAULT_IMPORTED_SYMVER:
 955           link_info.default_imported_symver = TRUE;
 956           break;
 957         case OPTION_NO_WARN_MISMATCH:
 958           command_line.warn_mismatch = FALSE;
 959           break;
 960         case OPTION_NOINHIBIT_EXEC:
 961           force_make_executable = TRUE;
 962           break;
 963         case OPTION_NOSTDLIB:
 964           config.only_cmd_line_lib_dirs = TRUE;
 965           break;
 966         case OPTION_NO_WHOLE_ARCHIVE:
 967           whole_archive = FALSE;
 968           break;
 969         case 'O':
 970           /* FIXME "-O<non-digits> <value>" used to set the address of
 971              section <non-digits>.  Was this for compatibility with
 972              something, or can we create a new option to do that
 973              (with a syntax similar to -defsym)?
 974              getopt can't handle two args to an option without kludges.  */
 975
 976           /* Enable optimizations of output files.  */
 977           link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
 978           break;
 979         case 'o':
 980           lang_add_output (optarg, 0);
 981           break;
 982         case OPTION_OFORMAT:
 983           lang_add_output_format (optarg, NULL, NULL, 0);
 984           break;
 985         case 'q':
 986           link_info.emitrelocations = TRUE;
 987           break;
 988         case 'i':
 989         case 'r':
 990           if (optind == last_optind)
 991             /* This can happen if the user put "-rpath,a" on the command
 992                line.  (Or something similar.  The comma is important).
 993                Getopt becomes confused and thinks that this is a -r option
 994                but it cannot parse the text after the -r so it refuses to
 995                increment the optind counter.  Detect this case and issue
 996                an error message here.  We cannot just make this a warning,
 997                increment optind, and continue because getopt is too confused
 998                and will seg-fault the next time around.  */
 999             einfo(_("%P%F: bad -rpath option\n"));
1000
1001           link_info.relocatable = TRUE;
1002           config.build_constructors = FALSE;
1003           config.magic_demand_paged = FALSE;
1004           config.text_read_only = FALSE;
1005           config.dynamic_link = FALSE;
1006           break;
1007         case 'R':
1008           /* The GNU linker traditionally uses -R to mean to include
1009              only the symbols from a file.  The Solaris linker uses -R
1010              to set the path used by the runtime linker to find
1011              libraries.  This is the GNU linker -rpath argument.  We
1012              try to support both simultaneously by checking the file
1013              named.  If it is a directory, rather than a regular file,
1014              we assume -rpath was meant.  */
1015           {
1016             struct stat s;
1017
1018             if (stat (optarg, &s) >= 0
1019                 && ! S_ISDIR (s.st_mode))
1020               {
1021                 lang_add_input_file (optarg,
1022                                      lang_input_file_is_symbols_only_enum,
1023                                      NULL);
1024                 break;
1025               }
1026           }
1027           /* Fall through.  */
1028         case OPTION_RPATH:
1029           if (command_line.rpath == NULL)
1030             command_line.rpath = xstrdup (optarg);
1031           else
1032             {
1033               size_t rpath_len = strlen (command_line.rpath);
1034               size_t optarg_len = strlen (optarg);
1035               char *buf;
1036               char *cp = command_line.rpath;
1037
1038               /* First see whether OPTARG is already in the path.  */
1039               do
1040                 {
1041                   size_t idx = 0;
1042
1043                   while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
1044                     ++idx;
1045                   if (optarg[idx] == '\0'
1046                       && (cp[idx] == '\0' || cp[idx] == ':'))
1047                     /* We found it.  */
1048                     break;
1049
1050                   /* Not yet found.  */
1051                   cp = strchr (cp, ':');
1052                   if (cp != NULL)
1053                     ++cp;
1054                 }
1055               while (cp != NULL);
1056
1057               if (cp == NULL)
1058                 {
1059                   buf = xmalloc (rpath_len + optarg_len + 2);
1060                   sprintf (buf, "%s:%s", command_line.rpath, optarg);
1061                   free (command_line.rpath);
1062                   command_line.rpath = buf;
1063                 }
1064             }
1065           break;
1066         case OPTION_RPATH_LINK:
1067           if (command_line.rpath_link == NULL)
1068             command_line.rpath_link = xstrdup (optarg);
1069           else
1070             {
1071               char *buf;
1072
1073               buf = xmalloc (strlen (command_line.rpath_link)
1074                              + strlen (optarg)
1075                              + 2);
1076               sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
1077               free (command_line.rpath_link);
1078               command_line.rpath_link = buf;
1079             }
1080           break;
1081         case OPTION_RELAX:
1082           command_line.relax = TRUE;
1083           break;
1084         case OPTION_RETAIN_SYMBOLS_FILE:
1085           add_keepsyms_file (optarg);
1086           break;
1087         case 'S':
1088           link_info.strip = strip_debugger;
1089           break;
1090         case 's':
1091           link_info.strip = strip_all;
1092           break;
1093         case OPTION_STRIP_DISCARDED:
1094           link_info.strip_discarded = TRUE;
1095           break;
1096         case OPTION_NO_STRIP_DISCARDED:
1097           link_info.strip_discarded = FALSE;
1098           break;
1099         case OPTION_SHARED:
1100           if (config.has_shared)
1101             {
1102               link_info.shared = TRUE;
1103               /* When creating a shared library, the default
1104                  behaviour is to ignore any unresolved references.  */
1105               if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1106                 link_info.unresolved_syms_in_objects = RM_IGNORE;
1107               if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1108                 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1109             }
1110           else
1111             einfo (_("%P%F: -shared not supported\n"));
1112           break;
1113         case OPTION_PIE:
1114           if (config.has_shared)
1115             {
1116               link_info.shared = TRUE;
1117               link_info.pie = TRUE;
1118             }
1119           else
1120             einfo (_("%P%F: -pie not supported\n"));
1121           break;
1122         case 'h':               /* Used on Solaris.  */
1123         case OPTION_SONAME:
1124           command_line.soname = optarg;
1125           break;
1126         case OPTION_SORT_COMMON:
1127           config.sort_common = TRUE;
1128           break;
1129         case OPTION_SORT_SECTION:
1130           if (strcmp (optarg, N_("name")) == 0)
1131             sort_section = by_name;
1132           else if (strcmp (optarg, N_("alignment")) == 0)
1133             sort_section = by_alignment;
1134           else
1135             einfo (_("%P%F: invalid section sorting option: %s\n"),
1136                    optarg);
1137           break;
1138         case OPTION_STATS:
1139           config.stats = TRUE;
1140           break;
1141         case OPTION_SYMBOLIC:
1142           link_info.symbolic = TRUE;
1143           break;
1144         case 't':
1145           trace_files = TRUE;
1146           break;
1147         case 'T':
1148           ldfile_open_command_file (optarg);
1149           parser_input = input_script;
1150           yyparse ();
1151           break;
1152         case OPTION_SECTION_START:
1153           {
1154             char *optarg2;
1155             char *sec_name;
1156             int len;
1157
1158             /* Check for <something>=<somthing>...  */
1159             optarg2 = strchr (optarg, '=');
1160             if (optarg2 == NULL)
1161               einfo (_("%P%F: invalid argument to option"
1162                        " \"--section-start\"\n"));
1163
1164             optarg2++;
1165
1166             /* So far so good.  Are all the args present?  */
1167             if ((*optarg == '\0') || (*optarg2 == '\0'))
1168               einfo (_("%P%F: missing argument(s) to option"
1169                        " \"--section-start\"\n"));
1170
1171             /* We must copy the section name as set_section_start
1172                doesn't do it for us.  */
1173             len = optarg2 - optarg;
1174             sec_name = xmalloc (len);
1175             memcpy (sec_name, optarg, len - 1);
1176             sec_name[len - 1] = 0;
1177
1178             /* Then set it...  */
1179             set_section_start (sec_name, optarg2);
1180           }
1181           break;
1182         case OPTION_TARGET_HELP:
1183           /* Mention any target specific options.  */
1184           ldemul_list_emulation_options (stdout);
1185           exit (0);
1186         case OPTION_TBSS:
1187           set_segment_start (".bss", optarg);
1188           break;
1189         case OPTION_TDATA:
1190           set_segment_start (".data", optarg);
1191           break;
1192         case OPTION_TTEXT:
1193           set_segment_start (".text", optarg);
1194           break;
1195         case OPTION_TRADITIONAL_FORMAT:
1196           link_info.traditional_format = TRUE;
1197           break;
1198         case OPTION_TASK_LINK:
1199           link_info.task_link = TRUE;
1200           /* Fall through - do an implied -r option.  */
1201         case OPTION_UR:
1202           link_info.relocatable = TRUE;
1203           config.build_constructors = TRUE;
1204           config.magic_demand_paged = FALSE;
1205           config.text_read_only = FALSE;
1206           config.dynamic_link = FALSE;
1207           break;
1208         case 'u':
1209           ldlang_add_undef (optarg);
1210           break;
1211         case OPTION_UNIQUE:
1212           if (optarg != NULL)
1213             lang_add_unique (optarg);
1214           else
1215             config.unique_orphan_sections = TRUE;
1216           break;
1217         case OPTION_VERBOSE:
1218           ldversion (1);
1219           version_printed = TRUE;
1220           trace_file_tries = TRUE;
1221           overflow_cutoff_limit = -2;
1222           break;
1223         case 'v':
1224           ldversion (0);
1225           version_printed = TRUE;
1226           break;
1227         case 'V':
1228           ldversion (1);
1229           version_printed = TRUE;
1230           break;
1231         case OPTION_VERSION:
1232           ldversion (2);
1233           xexit (0);
1234           break;
1235         case OPTION_VERSION_SCRIPT:
1236           /* This option indicates a small script that only specifies
1237              version information.  Read it, but don't assume that
1238              we've seen a linker script.  */
1239           {
1240             FILE *hold_script_handle;
1241
1242             hold_script_handle = saved_script_handle;
1243             ldfile_open_command_file (optarg);
1244             saved_script_handle = hold_script_handle;
1245             parser_input = input_version_script;
1246             yyparse ();
1247           }
1248           break;
1249         case OPTION_VERSION_EXPORTS_SECTION:
1250           /* This option records a version symbol to be applied to the
1251              symbols listed for export to be found in the object files
1252              .exports sections.  */
1253           command_line.version_exports_section = optarg;
1254           break;
1255         case OPTION_DYNAMIC_LIST_DATA:
1256           link_info.dynamic_data = TRUE;
1257           link_info.dynamic = TRUE;
1258           break;
1259         case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1260           lang_append_dynamic_list_cpp_typeinfo ();
1261           link_info.dynamic = TRUE;
1262           break;
1263         case OPTION_DYNAMIC_LIST_CPP_NEW:
1264           lang_append_dynamic_list_cpp_new ();
1265           link_info.dynamic = TRUE;
1266           break;
1267         case OPTION_DYNAMIC_LIST:
1268           /* This option indicates a small script that only specifies
1269              a dynamic list.  Read it, but don't assume that we've
1270              seen a linker script.  */
1271           {
1272             FILE *hold_script_handle;
1273
1274             hold_script_handle = saved_script_handle;
1275             ldfile_open_command_file (optarg);
1276             saved_script_handle = hold_script_handle;
1277             parser_input = input_dynamic_list;
1278             yyparse ();
1279           }
1280           link_info.dynamic = TRUE;
1281           break;
1282         case OPTION_WARN_COMMON:
1283           config.warn_common = TRUE;
1284           break;
1285         case OPTION_WARN_CONSTRUCTORS:
1286           config.warn_constructors = TRUE;
1287           break;
1288         case OPTION_WARN_FATAL:
1289           config.fatal_warnings = TRUE;
1290           break;
1291         case OPTION_WARN_MULTIPLE_GP:
1292           config.warn_multiple_gp = TRUE;
1293           break;
1294         case OPTION_WARN_ONCE:
1295           config.warn_once = TRUE;
1296           break;
1297         case OPTION_WARN_SECTION_ALIGN:
1298           config.warn_section_align = TRUE;
1299           break;
1300         case OPTION_WARN_SHARED_TEXTREL:
1301           link_info.warn_shared_textrel = TRUE;
1302           break;
1303         case OPTION_WHOLE_ARCHIVE:
1304           whole_archive = TRUE;
1305           break;
1306         case OPTION_ADD_NEEDED:
1307           add_needed = TRUE;
1308           break;
1309         case OPTION_NO_ADD_NEEDED:
1310           add_needed = FALSE;
1311           break;
1312         case OPTION_AS_NEEDED:
1313           as_needed = TRUE;
1314           break;
1315         case OPTION_NO_AS_NEEDED:
1316           as_needed = FALSE;
1317           break;
1318         case OPTION_WRAP:
1319           add_wrap (optarg);
1320           break;
1321         case OPTION_DISCARD_NONE:
1322           link_info.discard = discard_none;
1323           break;
1324         case 'X':
1325           link_info.discard = discard_l;
1326           break;
1327         case 'x':
1328           link_info.discard = discard_all;
1329           break;
1330         case 'Y':
1331           if (CONST_STRNEQ (optarg, "P,"))
1332             optarg += 2;
1333           if (default_dirlist != NULL)
1334             free (default_dirlist);
1335           default_dirlist = xstrdup (optarg);
1336           break;
1337         case 'y':
1338           add_ysym (optarg);
1339           break;
1340         case OPTION_SPARE_DYNAMIC_TAGS:
1341           link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1342           break;
1343         case OPTION_SPLIT_BY_RELOC:
1344           if (optarg != NULL)
1345             config.split_by_reloc = strtoul (optarg, NULL, 0);
1346           else
1347             config.split_by_reloc = 32768;
1348           break;
1349         case OPTION_SPLIT_BY_FILE:
1350           if (optarg != NULL)
1351             config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1352           else
1353             config.split_by_file = 1;
1354           break;
1355         case OPTION_CHECK_SECTIONS:
1356           command_line.check_section_addresses = TRUE;
1357           break;
1358         case OPTION_NO_CHECK_SECTIONS:
1359           command_line.check_section_addresses = FALSE;
1360           break;
1361         case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1362           command_line.accept_unknown_input_arch = TRUE;
1363           break;
1364         case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1365           command_line.accept_unknown_input_arch = FALSE;
1366           break;
1367         case '(':
1368           if (ingroup)
1369             einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1370
1371           lang_enter_group ();
1372           ingroup = 1;
1373           break;
1374         case ')':
1375           if (! ingroup)
1376             einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1377
1378           lang_leave_group ();
1379           ingroup = 0;
1380           break;
1381
1382         case OPTION_INIT:
1383           link_info.init_function = optarg;
1384           break;
1385
1386         case OPTION_FINI:
1387           link_info.fini_function = optarg;
1388           break;
1389
1390         case OPTION_REDUCE_MEMORY_OVERHEADS:
1391           link_info.reduce_memory_overheads = TRUE;
1392           if (config.hash_table_size == 0)
1393             config.hash_table_size = 1021;
1394           break;
1395
1396         case OPTION_HASH_SIZE:
1397           {
1398             bfd_size_type new_size;
1399
1400             new_size = strtoul (optarg, NULL, 0);
1401             if (new_size)
1402               config.hash_table_size = new_size;
1403             else
1404               einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1405           }
1406           break;
1407         }
1408     }
1409
1410   if (ingroup)
1411     lang_leave_group ();
1412
1413   if (default_dirlist != NULL)
1414     {
1415       set_default_dirlist (default_dirlist);
1416       free (default_dirlist);
1417     }
1418
1419   if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1420     /* FIXME: Should we allow emulations a chance to set this ?  */
1421     link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1422
1423   if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1424     /* FIXME: Should we allow emulations a chance to set this ?  */
1425     link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1426 }
1427
1428 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1429    library search path.  */
1430
1431 static void
1432 set_default_dirlist (char *dirlist_ptr)
1433 {
1434   char *p;
1435
1436   while (1)
1437     {
1438       p = strchr (dirlist_ptr, PATH_SEPARATOR);
1439       if (p != NULL)
1440         *p = '\0';
1441       if (*dirlist_ptr != '\0')
1442         ldfile_add_library_path (dirlist_ptr, TRUE);
1443       if (p == NULL)
1444         break;
1445       dirlist_ptr = p + 1;
1446     }
1447 }
1448
1449 static void
1450 set_section_start (char *sect, char *valstr)
1451 {
1452   const char *end;
1453   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1454   if (*end)
1455     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1456   lang_section_start (sect, exp_intop (val), NULL);
1457 }
1458
1459 static void
1460 set_segment_start (const char *section, char *valstr)
1461 {
1462   const char *name;
1463   const char *end;
1464   segment_type *seg;
1465
1466   bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1467   if (*end)
1468     einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1469   /* If we already have an entry for this segment, update the existing
1470      value.  */
1471   name = section + 1;
1472   for (seg = segments; seg; seg = seg->next)
1473     if (strcmp (seg->name, name) == 0)
1474       {
1475         seg->value = val;
1476         return;
1477       }
1478   /* There was no existing value so we must create a new segment
1479      entry.  */
1480   seg = stat_alloc (sizeof (*seg));
1481   seg->name = name;
1482   seg->value = val;
1483   seg->used = FALSE;
1484   /* Add it to the linked list of segments.  */
1485   seg->next = segments;
1486   segments = seg;
1487   /* Historically, -Ttext and friends set the base address of a
1488      particular section.  For backwards compatibility, we still do
1489      that.  If a SEGMENT_START directive is seen, the section address
1490      assignment will be disabled.  */
1491   lang_section_start (section, exp_intop (val), seg);
1492 }
1493
1494 \f
1495 /* Print help messages for the options.  */
1496
1497 static void
1498 help (void)
1499 {
1500   unsigned i;
1501   const char **targets, **pp;
1502   int len;
1503
1504   printf (_("Usage: %s [options] file...\n"), program_name);
1505
1506   printf (_("Options:\n"));
1507   for (i = 0; i < OPTION_COUNT; i++)
1508     {
1509       if (ld_options[i].doc != NULL)
1510         {
1511           bfd_boolean comma;
1512           unsigned j;
1513
1514           printf ("  ");
1515
1516           comma = FALSE;
1517           len = 2;
1518
1519           j = i;
1520           do
1521             {
1522               if (ld_options[j].shortopt != '\0'
1523                   && ld_options[j].control != NO_HELP)
1524                 {
1525                   printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1526                   len += (comma ? 2 : 0) + 2;
1527                   if (ld_options[j].arg != NULL)
1528                     {
1529                       if (ld_options[j].opt.has_arg != optional_argument)
1530                         {
1531                           printf (" ");
1532                           ++len;
1533                         }
1534                       printf ("%s", _(ld_options[j].arg));
1535                       len += strlen (_(ld_options[j].arg));
1536                     }
1537                   comma = TRUE;
1538                 }
1539               ++j;
1540             }
1541           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1542
1543           j = i;
1544           do
1545             {
1546               if (ld_options[j].opt.name != NULL
1547                   && ld_options[j].control != NO_HELP)
1548                 {
1549                   int two_dashes =
1550                     (ld_options[j].control == TWO_DASHES
1551                      || ld_options[j].control == EXACTLY_TWO_DASHES);
1552
1553                   printf ("%s-%s%s",
1554                           comma ? ", " : "",
1555                           two_dashes ? "-" : "",
1556                           ld_options[j].opt.name);
1557                   len += ((comma ? 2 : 0)
1558                           + 1
1559                           + (two_dashes ? 1 : 0)
1560                           + strlen (ld_options[j].opt.name));
1561                   if (ld_options[j].arg != NULL)
1562                     {
1563                       printf (" %s", _(ld_options[j].arg));
1564                       len += 1 + strlen (_(ld_options[j].arg));
1565                     }
1566                   comma = TRUE;
1567                 }
1568               ++j;
1569             }
1570           while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1571
1572           if (len >= 30)
1573             {
1574               printf ("\n");
1575               len = 0;
1576             }
1577
1578           for (; len < 30; len++)
1579             putchar (' ');
1580
1581           printf ("%s\n", _(ld_options[i].doc));
1582         }
1583     }
1584   printf (_("  @FILE"));
1585   for (len = strlen ("  @FILE"); len < 30; len++)
1586     putchar (' ');
1587   printf (_("Read options from FILE\n"));
1588
1589   /* Note: Various tools (such as libtool) depend upon the
1590      format of the listings below - do not change them.  */
1591   /* xgettext:c-format */
1592   printf (_("%s: supported targets:"), program_name);
1593   targets = bfd_target_list ();
1594   for (pp = targets; *pp != NULL; pp++)
1595     printf (" %s", *pp);
1596   free (targets);
1597   printf ("\n");
1598
1599   /* xgettext:c-format */
1600   printf (_("%s: supported emulations: "), program_name);
1601   ldemul_list_emulations (stdout);
1602   printf ("\n");
1603
1604   /* xgettext:c-format */
1605   printf (_("%s: emulation specific options:\n"), program_name);
1606   ldemul_list_emulation_options (stdout);
1607   printf ("\n");
1608
1609   printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1610 }