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630f4ac9c6
* ldlex.h (lex_string): Declare. * ldlex.l (lex_string): Define. * lexsup.c (parsing_defsym): Define. (parse_args): In OPTION_DEFSYM case, set lex_string before calling lex_redirect, and clear it after calling yyparse. Set parsing_defsym around call to yyparse. * ldmain.c (main): Set lex_string before calling lex_redirect, and clear it after calling yyparse. * ldmisc.c (vfinfo): For %S, handle --defsym arguments and built in linker scripts correctly. PR 8092.
575 lines
17 KiB
C
575 lines
17 KiB
C
/* Parse options for the GNU linker.
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Copyright (C) 1991, 92, 93, 94, 1995 Free Software Foundation, Inc.
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "getopt.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldgram.h"
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#include "ldlex.h"
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#include "ldfile.h"
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#include "ldver.h"
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#include "ldemul.h"
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/* Somewhere above, sys/stat.h got included . . . . */
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#if !defined(S_ISDIR) && defined(S_IFDIR)
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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/* Omit args to avoid the possibility of clashing with a system header
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that might disagree about consts. */
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unsigned long strtoul ();
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static void set_default_dirlist PARAMS ((char *dirlist_ptr));
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static void set_section_start PARAMS ((char *sect, char *valstr));
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/* Non-zero if we are processing a --defsym from the command line. */
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int parsing_defsym = 0;
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void
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parse_args (argc, argv)
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int argc;
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char **argv;
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{
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int i;
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int ingroup = 0;
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char *default_dirlist = NULL;
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/* Starting the short option string with '-' is for programs that
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expect options and other ARGV-elements in any order and that care about
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the ordering of the two. We describe each non-option ARGV-element
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as if it were the argument of an option with character code 1. */
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const char *shortopts =
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"-a:A:B::b:c:de:F::G:gh:iL:l:Mm:NnO:o:R:rSsT:tu:VvXxY:y:z:()";
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/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
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#define OPTION_ASSERT 150
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#define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
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#define OPTION_DEFSYM (OPTION_CALL_SHARED + 1)
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#define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1)
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#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
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#define OPTION_EL (OPTION_EB + 1)
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#define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
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#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
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#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
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#define OPTION_IGNORE (OPTION_HELP + 1)
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#define OPTION_MAP (OPTION_IGNORE + 1)
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#define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
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#define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1)
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#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
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#define OPTION_OFORMAT (OPTION_NON_SHARED + 1)
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#define OPTION_RELAX (OPTION_OFORMAT + 1)
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#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
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#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
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#define OPTION_SHARED (OPTION_RPATH + 1)
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#define OPTION_SONAME (OPTION_SHARED + 1)
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#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
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#define OPTION_STATS (OPTION_SORT_COMMON + 1)
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#define OPTION_SYMBOLIC (OPTION_STATS + 1)
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#define OPTION_TBSS (OPTION_SYMBOLIC + 1)
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#define OPTION_TDATA (OPTION_TBSS + 1)
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#define OPTION_TTEXT (OPTION_TDATA + 1)
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#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
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#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
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#define OPTION_VERBOSE (OPTION_UR + 1)
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#define OPTION_VERSION (OPTION_VERBOSE + 1)
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#define OPTION_WARN_COMMON (OPTION_VERSION + 1)
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#define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
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#define OPTION_WARN_ONCE (OPTION_WARN_CONSTRUCTORS + 1)
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#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1)
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#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
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#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
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static struct option longopts[] = {
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/* Sorted alphabeticaly, except for the PE options grouped at the end. */
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{"assert", required_argument, NULL, OPTION_ASSERT},
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{"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
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{"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
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{"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
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{"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
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{"dc", no_argument, NULL, 'd'},
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{"defsym", required_argument, NULL, OPTION_DEFSYM},
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{"dll-verbose", no_argument, NULL, OPTION_VERSION}, /* Linux. */
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{"dn", no_argument, NULL, OPTION_NON_SHARED},
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{"dp", no_argument, NULL, 'd'},
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{"dy", no_argument, NULL, OPTION_CALL_SHARED},
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{"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
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{"EB", no_argument, NULL, OPTION_EB},
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{"EL", no_argument, NULL, OPTION_EL},
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{"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
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{"end-group", no_argument, NULL, ')'},
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{"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
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{"format", required_argument, NULL, 'b'},
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{"help", no_argument, NULL, OPTION_HELP},
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{"Map", required_argument, NULL, OPTION_MAP},
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{"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
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{"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
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{"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
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{"non_shared", no_argument, NULL, OPTION_NON_SHARED},
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{"oformat", required_argument, NULL, OPTION_OFORMAT},
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{"Qy", no_argument, NULL, OPTION_IGNORE},
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{"qmagic", no_argument, NULL, OPTION_IGNORE}, /* Linux compatibility. */
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{"relax", no_argument, NULL, OPTION_RELAX},
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{"retain-symbols-file", required_argument, NULL, OPTION_RETAIN_SYMBOLS_FILE},
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{"rpath", required_argument, NULL, OPTION_RPATH},
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{"shared", no_argument, NULL, OPTION_SHARED},
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{"soname", required_argument, NULL, OPTION_SONAME},
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{"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
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{"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
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{"start-group", no_argument, NULL, '('},
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{"stats", no_argument, NULL, OPTION_STATS},
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{"static", no_argument, NULL, OPTION_NON_SHARED},
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{"Tbss", required_argument, NULL, OPTION_TBSS},
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{"Tdata", required_argument, NULL, OPTION_TDATA},
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{"Ttext", required_argument, NULL, OPTION_TTEXT},
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{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
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{"Ur", no_argument, NULL, OPTION_UR},
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{"verbose", no_argument, NULL, OPTION_VERBOSE},
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{"version", no_argument, NULL, OPTION_VERSION},
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{"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
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{"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
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{"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
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{"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
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{"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
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{"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
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{NULL, no_argument, NULL, 0}
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};
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/* The -G option is ambiguous on different platforms. Sometimes it
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specifies the largest data size to put into the small data
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section. Sometimes it is equivalent to --shared. Unfortunately,
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the first form takes an argument, while the second does not.
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We need to permit the --shared form because on some platforms,
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such as Solaris, gcc -shared will pass -G to the linker.
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To permit either usage, we look through the argument list. If we
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find -G not followed by a number, we change it into --shared.
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This will work for most normal cases. */
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for (i = 1; i < argc; i++)
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if (strcmp (argv[i], "-G") == 0
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&& (i + 1 >= argc
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|| ! isdigit (argv[i + 1][0])))
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argv[i] = (char *) "--shared";
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while (1)
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{
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/* getopt_long_only is like getopt_long, but '-' as well as '--' can
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indicate a long option. */
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int longind;
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int optc;
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if (ldemul_parse_args (argc, argv))
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continue;
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optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
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if (optc == -1)
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break;
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switch (optc)
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{
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default:
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xexit (1);
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case 1: /* File name. */
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lang_add_input_file (optarg, lang_input_file_is_file_enum,
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(char *) NULL);
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break;
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case OPTION_IGNORE:
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break;
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case 'a':
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/* For HP/UX compatibility. Actually -a shared should mean
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``use only shared libraries'' but, then, we don't
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currently support shared libraries on HP/UX anyhow. */
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if (strcmp (optarg, "archive") == 0)
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config.dynamic_link = false;
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else if (strcmp (optarg, "shared") == 0
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|| strcmp (optarg, "default") == 0)
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config.dynamic_link = true;
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else
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einfo ("%P%F: unrecognized -a option `%s'\n", optarg);
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break;
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case OPTION_ASSERT:
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/* FIXME: We just ignore these, except for pure-text, but we
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should handle them. */
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if (strcmp (optarg, "definitions") == 0)
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;
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else if (strcmp (optarg, "nodefinitions") == 0)
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;
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else if (strcmp (optarg, "nosymbolic") == 0)
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;
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else if (strcmp (optarg, "pure-text") == 0)
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{
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/* FIXME: This is wrong. We do it this way as a hack to
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support SunOS4, on which gcc -shared will pass
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-assert pure-text to the linker. The SunOS linker
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will automatically create a shared library if there
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are any undefined symbols, but our linker does not
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know how to do that (it seems to require an extra
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pass over the relocs). */
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link_info.shared = true;
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}
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else
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einfo ("%P%F: unrecognized -assert option `%s'\n", optarg);
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break;
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case 'A':
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ldfile_add_arch (optarg);
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break;
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case 'b':
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lang_add_target (optarg);
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break;
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case 'c':
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ldfile_open_command_file (optarg);
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parser_input = input_mri_script;
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yyparse ();
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break;
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case OPTION_CALL_SHARED:
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config.dynamic_link = true;
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break;
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case OPTION_NON_SHARED:
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config.dynamic_link = false;
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break;
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case 'd':
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command_line.force_common_definition = true;
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break;
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case OPTION_DEFSYM:
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lex_string = optarg;
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lex_redirect (optarg);
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parser_input = input_defsym;
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parsing_defsym = 1;
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yyparse ();
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parsing_defsym = 0;
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lex_string = NULL;
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break;
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case OPTION_DYNAMIC_LINKER:
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command_line.interpreter = optarg;
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break;
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case OPTION_EB:
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command_line.endian = ENDIAN_BIG;
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break;
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case OPTION_EL:
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command_line.endian = ENDIAN_LITTLE;
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break;
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case OPTION_EMBEDDED_RELOCS:
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command_line.embedded_relocs = true;
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break;
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case OPTION_EXPORT_DYNAMIC:
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command_line.export_dynamic = true;
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break;
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case 'e':
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lang_add_entry (optarg, 1);
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break;
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case 'F':
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/* Ignore. */
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break;
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case 'G':
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{
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char *end;
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g_switch_value = strtoul (optarg, &end, 0);
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if (*end)
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einfo ("%P%F: invalid number `%s'\n", optarg);
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}
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break;
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case 'g':
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/* Ignore. */
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break;
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case OPTION_HELP:
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help ();
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xexit (0);
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break;
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case 'L':
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ldfile_add_library_path (optarg, true);
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break;
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case 'l':
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lang_add_input_file (optarg, lang_input_file_is_l_enum,
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(char *) NULL);
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break;
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case 'M':
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config.map_filename = "-";
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break;
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case 'm':
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/* Ignore. Was handled in a pre-parse. */
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break;
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case OPTION_MAP:
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config.map_filename = optarg;
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break;
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case 'N':
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config.text_read_only = false;
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config.magic_demand_paged = false;
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break;
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case 'n':
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config.magic_demand_paged = false;
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break;
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case OPTION_NO_KEEP_MEMORY:
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link_info.keep_memory = false;
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break;
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case OPTION_NOINHIBIT_EXEC:
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force_make_executable = true;
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break;
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case 'O':
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/* FIXME "-O<non-digits> <value>" used to set the address of
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section <non-digits>. Was this for compatibility with
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something, or can we create a new option to do that
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(with a syntax similar to -defsym)?
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getopt can't handle two args to an option without kludges. */
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break;
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case 'o':
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lang_add_output (optarg, 0);
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break;
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case OPTION_OFORMAT:
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lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
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break;
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case 'i':
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case 'r':
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link_info.relocateable = true;
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config.build_constructors = false;
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config.magic_demand_paged = false;
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config.text_read_only = false;
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config.dynamic_link = false;
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break;
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case 'R':
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/* The GNU linker traditionally uses -R to mean to include
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only the symbols from a file. The Solaris linker uses -R
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to set the path used by the runtime linker to find
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libraries. This is the GNU linker -rpath argument. We
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try to support both simultaneously by checking the file
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named. If it is a directory, rather than a regular file,
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we assume -rpath was meant. */
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{
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struct stat s;
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if (stat (optarg, &s) >= 0
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&& ! S_ISDIR (s.st_mode))
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{
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lang_add_input_file (optarg,
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lang_input_file_is_symbols_only_enum,
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(char *) NULL);
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break;
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}
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}
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/* Fall through. */
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case OPTION_RPATH:
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if (command_line.rpath == NULL)
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command_line.rpath = buystring (optarg);
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else
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{
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char *buf;
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buf = xmalloc (strlen (command_line.rpath)
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+ strlen (optarg)
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+ 2);
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sprintf (buf, "%s:%s", command_line.rpath, optarg);
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free (command_line.rpath);
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command_line.rpath = buf;
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}
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break;
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case OPTION_RELAX:
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command_line.relax = true;
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break;
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case OPTION_RETAIN_SYMBOLS_FILE:
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add_keepsyms_file (optarg);
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break;
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case 'S':
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link_info.strip = strip_debugger;
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break;
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case 's':
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link_info.strip = strip_all;
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break;
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case OPTION_SHARED:
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link_info.shared = true;
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break;
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case 'h': /* Used on Solaris. */
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case OPTION_SONAME:
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command_line.soname = optarg;
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break;
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case OPTION_SORT_COMMON:
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config.sort_common = true;
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break;
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case OPTION_STATS:
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config.stats = true;
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break;
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case OPTION_SYMBOLIC:
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link_info.symbolic = true;
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break;
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case 't':
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trace_files = true;
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break;
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case 'T':
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ldfile_open_command_file (optarg);
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parser_input = input_script;
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yyparse ();
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break;
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case OPTION_TBSS:
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set_section_start (".bss", optarg);
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break;
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case OPTION_TDATA:
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set_section_start (".data", optarg);
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break;
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case OPTION_TTEXT:
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set_section_start (".text", optarg);
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break;
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case OPTION_TRADITIONAL_FORMAT:
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config.traditional_format = true;
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break;
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case OPTION_UR:
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link_info.relocateable = true;
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config.build_constructors = true;
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config.magic_demand_paged = false;
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config.text_read_only = false;
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config.dynamic_link = false;
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break;
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case 'u':
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ldlang_add_undef (optarg);
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break;
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case OPTION_VERBOSE:
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ldversion (1);
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version_printed = true;
|
||
trace_file_tries = true;
|
||
break;
|
||
case 'v':
|
||
ldversion (0);
|
||
version_printed = true;
|
||
break;
|
||
case 'V':
|
||
ldversion (1);
|
||
version_printed = true;
|
||
break;
|
||
case OPTION_VERSION:
|
||
ldversion (0);
|
||
version_printed = true;
|
||
break;
|
||
case OPTION_WARN_COMMON:
|
||
config.warn_common = true;
|
||
break;
|
||
case OPTION_WARN_CONSTRUCTORS:
|
||
config.warn_constructors = true;
|
||
break;
|
||
case OPTION_WARN_ONCE:
|
||
config.warn_once = true;
|
||
break;
|
||
case OPTION_WHOLE_ARCHIVE:
|
||
whole_archive = true;
|
||
break;
|
||
case 'X':
|
||
link_info.discard = discard_l;
|
||
break;
|
||
case 'x':
|
||
link_info.discard = discard_all;
|
||
break;
|
||
case 'Y':
|
||
if (strncmp (optarg, "P,", 2) == 0)
|
||
optarg += 2;
|
||
default_dirlist = optarg;
|
||
break;
|
||
case 'y':
|
||
add_ysym (optarg);
|
||
break;
|
||
case 'z':
|
||
/* We accept and ignore this option for Solaris
|
||
compatibility. Actually, on Solaris, optarg is not
|
||
ignored. Someday we should handle it correctly. FIXME. */
|
||
break;
|
||
case OPTION_SPLIT_BY_RELOC:
|
||
config.split_by_reloc = atoi (optarg);
|
||
break;
|
||
case OPTION_SPLIT_BY_FILE:
|
||
config.split_by_file = true;
|
||
break;
|
||
case '(':
|
||
if (ingroup)
|
||
{
|
||
fprintf (stderr,
|
||
"%s: may not nest groups (--help for usage)\n",
|
||
program_name);
|
||
xexit (1);
|
||
}
|
||
lang_enter_group ();
|
||
ingroup = 1;
|
||
break;
|
||
case ')':
|
||
if (! ingroup)
|
||
{
|
||
fprintf (stderr,
|
||
"%s: group ended before it began (--help for usage)\n",
|
||
program_name);
|
||
xexit (1);
|
||
}
|
||
lang_leave_group ();
|
||
ingroup = 0;
|
||
break;
|
||
|
||
}
|
||
}
|
||
|
||
if (ingroup)
|
||
lang_leave_group ();
|
||
|
||
if (default_dirlist != NULL)
|
||
set_default_dirlist (default_dirlist);
|
||
|
||
}
|
||
|
||
/* Add the (colon-separated) elements of DIRLIST_PTR to the
|
||
library search path. */
|
||
|
||
static void
|
||
set_default_dirlist (dirlist_ptr)
|
||
char *dirlist_ptr;
|
||
{
|
||
char *p;
|
||
|
||
while (1)
|
||
{
|
||
p = strchr (dirlist_ptr, ':');
|
||
if (p != NULL)
|
||
*p = 0;
|
||
if (*dirlist_ptr)
|
||
ldfile_add_library_path (dirlist_ptr, true);
|
||
if (p == NULL)
|
||
break;
|
||
*p = ':';
|
||
dirlist_ptr = p + 1;
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_section_start (sect, valstr)
|
||
char *sect, *valstr;
|
||
{
|
||
char *end;
|
||
unsigned long val = strtoul (valstr, &end, 16);
|
||
if (*end)
|
||
einfo ("%P%F: invalid hex number `%s'\n", valstr);
|
||
lang_section_start (sect, exp_intop (val));
|
||
}
|
||
|