binutils-gdb/ld/lexsup.c

1168 lines
38 KiB
C
Raw Normal View History

1999-05-03 15:29:11 +08:00
/* Parse options for the GNU linker.
Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
1999-05-03 15:29:11 +08:00
Free Software Foundation, Inc.
This file is part of GLD, the Gnu Linker.
GLD is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GLD is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GLD; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libiberty.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "getopt.h"
#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldgram.h"
#include "ldlex.h"
#include "ldfile.h"
#include "ldver.h"
#include "ldemul.h"
#ifndef PATH_SEPARATOR
#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
#define PATH_SEPARATOR ';'
#else
#define PATH_SEPARATOR ':'
#endif
#endif
/* Somewhere above, sys/stat.h got included . . . . */
#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
/* Omit args to avoid the possibility of clashing with a system header
that might disagree about consts. */
unsigned long strtoul ();
static int is_num PARAMS ((const char *, int, int, int));
1999-05-03 15:29:11 +08:00
static void set_default_dirlist PARAMS ((char *dirlist_ptr));
static void set_section_start PARAMS ((char *sect, char *valstr));
static void help PARAMS ((void));
/* Non-zero if we are processing a --defsym from the command line. */
int parsing_defsym = 0;
/* Codes used for the long options with no short synonyms. 150 isn't
special; it's just an arbitrary non-ASCII char value. */
#define OPTION_ASSERT 150
#define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
#define OPTION_CREF (OPTION_CALL_SHARED + 1)
#define OPTION_DEFSYM (OPTION_CREF + 1)
#define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
#define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
#define OPTION_EL (OPTION_EB + 1)
#define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
#define OPTION_IGNORE (OPTION_HELP + 1)
#define OPTION_MAP (OPTION_IGNORE + 1)
#define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
#define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
#define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
#define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
#define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
#define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
#define OPTION_RELAX (OPTION_OFORMAT + 1)
#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
#define OPTION_RPATH_LINK (OPTION_RPATH + 1)
#define OPTION_SHARED (OPTION_RPATH_LINK + 1)
#define OPTION_SONAME (OPTION_SHARED + 1)
#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
#define OPTION_STATS (OPTION_SORT_COMMON + 1)
#define OPTION_SYMBOLIC (OPTION_STATS + 1)
#define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
#define OPTION_TBSS (OPTION_TASK_LINK + 1)
#define OPTION_TDATA (OPTION_TBSS + 1)
#define OPTION_TTEXT (OPTION_TDATA + 1)
#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
#define OPTION_VERBOSE (OPTION_UR + 1)
#define OPTION_VERSION (OPTION_VERBOSE + 1)
#define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
#define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
#define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
#define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
#define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
#define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
#define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
#define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
#define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
#define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
#define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
#define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
#define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
#define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
#define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
#define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
#define OPTION_FINI (OPTION_INIT + 1)
1999-05-03 15:29:11 +08:00
/* The long options. This structure is used for both the option
parsing and the help text. */
struct ld_option
{
/* The long option information. */
struct option opt;
/* The short option with the same meaning ('\0' if none). */
char shortopt;
/* The name of the argument (NULL if none). */
const char *arg;
/* The documentation string. If this is NULL, this is a synonym for
the previous option. */
const char *doc;
enum
{
/* Use one dash before long option name. */
ONE_DASH,
/* Use two dashes before long option name. */
TWO_DASHES,
/* Don't mention this option in --help output. */
NO_HELP
} control;
};
static const struct ld_option ld_options[] =
{
{ {NULL, required_argument, NULL, '\0'},
'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
ONE_DASH },
{ {"architecture", required_argument, NULL, 'A'},
'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
{ {"format", required_argument, NULL, 'b'},
'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
{ {"mri-script", required_argument, NULL, 'c'},
'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
{ {"dc", no_argument, NULL, 'd'},
'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
{ {"dp", no_argument, NULL, 'd'},
'\0', NULL, NULL, ONE_DASH },
{ {"entry", required_argument, NULL, 'e'},
'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
{ {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
{ {"EB", no_argument, NULL, OPTION_EB},
'\0', NULL, N_("Link big-endian objects"), ONE_DASH },
{ {"EL", no_argument, NULL, OPTION_EL},
'\0', NULL, N_("Link little-endian objects"), ONE_DASH },
{ {"auxiliary", required_argument, NULL, 'f'},
'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
TWO_DASHES },
{ {"filter", required_argument, NULL, 'F'},
'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'g', NULL, N_("Ignored"), ONE_DASH },
{ {"gpsize", required_argument, NULL, 'G'},
'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
TWO_DASHES },
{ {"soname", required_argument, NULL, OPTION_SONAME},
'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
{ {"library", required_argument, NULL, 'l'},
'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
{ {"library-path", required_argument, NULL, 'L'},
'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
{ {"print-map", no_argument, NULL, 'M'},
'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
{ {"nmagic", no_argument, NULL, 'n'},
'n', NULL, N_("Do not page align data"), TWO_DASHES },
{ {"omagic", no_argument, NULL, 'N'},
'N', NULL, N_("Do not page align data, do not make text readonly"),
TWO_DASHES },
{ {"output", required_argument, NULL, 'o'},
'o', N_("FILE"), N_("Set output file name"), TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'O', NULL, N_("Optimize output file"), ONE_DASH },
{ {"Qy", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
{ {"relocateable", no_argument, NULL, 'r'},
'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'i', NULL, NULL, ONE_DASH },
{ {"just-symbols", required_argument, NULL, 'R'},
'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
TWO_DASHES },
{ {"strip-all", no_argument, NULL, 's'},
's', NULL, N_("Strip all symbols"), TWO_DASHES },
{ {"strip-debug", no_argument, NULL, 'S'},
'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
{ {"trace", no_argument, NULL, 't'},
't', NULL, N_("Trace file opens"), TWO_DASHES },
{ {"script", required_argument, NULL, 'T'},
'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
{ {"undefined", required_argument, NULL, 'u'},
'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
{ {"Ur", no_argument, NULL, OPTION_UR},
'\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
{ {"version", no_argument, NULL, OPTION_VERSION},
'v', NULL, N_("Print version information"), TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'V', NULL, N_("Print version and emulation information"), ONE_DASH },
{ {"discard-all", no_argument, NULL, 'x'},
'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
{ {"discard-locals", no_argument, NULL, 'X'},
'X', NULL, N_("Discard temporary local symbols"), TWO_DASHES },
{ {"trace-symbol", required_argument, NULL, 'y'},
'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
{ {NULL, required_argument, NULL, '\0'},
'z', N_("KEYWORD"), N_("Ignored for Solaris compatibility"), ONE_DASH },
{ {"start-group", no_argument, NULL, '('},
'(', NULL, N_("Start a group"), TWO_DASHES },
{ {"end-group", no_argument, NULL, ')'},
')', NULL, N_("End a group"), TWO_DASHES },
{ {"assert", required_argument, NULL, OPTION_ASSERT},
'\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
{ {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, N_("Link against shared libraries"), ONE_DASH },
{ {"dy", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
{ {"dn", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"static", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
'\0', NULL, N_("Bind global references locally"), ONE_DASH },
{ {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
'\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
{ {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
'\0', NULL, N_("Do not check section addresses for overlaps"),
TWO_DASHES },
{ {"cref", no_argument, NULL, OPTION_CREF},
'\0', NULL, N_("Output cross reference table"), TWO_DASHES },
{ {"defsym", required_argument, NULL, OPTION_DEFSYM},
'\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
{ {"demangle", no_argument, NULL, OPTION_DEMANGLE},
'\0', NULL, N_("Demangle symbol names"), TWO_DASHES },
{ {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
'\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
{ {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
'\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
{ {"fini", required_argument, NULL, OPTION_FINI},
'\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
1999-05-03 15:29:11 +08:00
{ {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
'\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
{ {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
'\0', NULL, N_("Remove unused sections (on some targets)"),
TWO_DASHES },
{ {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
'\0', NULL, N_("Don't remove unused sections (default)"),
TWO_DASHES },
{ {"help", no_argument, NULL, OPTION_HELP},
'\0', NULL, N_("Print option help"), TWO_DASHES },
{ {"init", required_argument, NULL, OPTION_INIT},
'\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
1999-05-03 15:29:11 +08:00
{ {"Map", required_argument, NULL, OPTION_MAP},
'\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
{ {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
'\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
{ {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
'\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
{ {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
'\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
{ {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
'\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
{ {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
'\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
{ {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
'\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
{ {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
'\0', NULL, NULL, NO_HELP },
{ {"oformat", required_argument, NULL, OPTION_OFORMAT},
'\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES },
{ {"qmagic", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
{ {"relax", no_argument, NULL, OPTION_RELAX},
'\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
{ {"retain-symbols-file", required_argument, NULL,
OPTION_RETAIN_SYMBOLS_FILE},
'\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
{ {"rpath", required_argument, NULL, OPTION_RPATH},
'\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
{ {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
'\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
{ {"shared", no_argument, NULL, OPTION_SHARED},
'\0', NULL, N_("Create a shared library"), ONE_DASH },
{ {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
'\0', NULL, NULL, ONE_DASH },
{ {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
'\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
{ {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
'\0', NULL, NULL, NO_HELP },
{ {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
'\0', NULL, N_("Split output sections for each file"), TWO_DASHES },
{ {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
'\0', N_("COUNT"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
{ {"stats", no_argument, NULL, OPTION_STATS},
'\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
{ {"task-link", required_argument, NULL, OPTION_TASK_LINK},
'\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
{ {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
'\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
{ {"Tbss", required_argument, NULL, OPTION_TBSS},
'\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
{ {"Tdata", required_argument, NULL, OPTION_TDATA},
'\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
{ {"Ttext", required_argument, NULL, OPTION_TTEXT},
'\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
{ {"verbose", no_argument, NULL, OPTION_VERBOSE},
'\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
{ {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
'\0', NULL, NULL, NO_HELP },
{ {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
'\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
{ {"version-exports-section", required_argument, NULL,
OPTION_VERSION_EXPORTS_SECTION },
1999-05-28 18:50:29 +08:00
'\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
1999-05-03 15:29:11 +08:00
TWO_DASHES },
{ {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
'\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
{ {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
'\0', NULL, N_("Warn if global constructors/destructors are seen"),
TWO_DASHES },
{ {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
'\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
{ {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
'\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
{ {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
'\0', NULL, N_("Warn if start of section changes due to alignment"),
TWO_DASHES },
{ {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
'\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
{ {"wrap", required_argument, NULL, OPTION_WRAP},
'\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
{ {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
1999-05-28 18:50:29 +08:00
'\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
1999-05-03 15:29:11 +08:00
};
#define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
/* Test STRING for containing a string of digits that form a number
between MIN and MAX. The return value is the number or ERR. */
static int
is_num (string, min, max, err)
const char *string;
int min;
int max;
int err;
1999-05-03 15:29:11 +08:00
{
int result = 0;
for (; *string; ++string)
1999-05-03 15:29:11 +08:00
{
if (! isdigit (*string))
{
result = err;
break;
}
result = result * 10 + (*string - '0');
1999-05-03 15:29:11 +08:00
}
if (result < min || result > max)
result = err;
return result;
}
void
parse_args (argc, argv)
int argc;
char **argv;
{
int i, is, il;
int ingroup = 0;
char *default_dirlist = NULL;
char shortopts[OPTION_COUNT * 3 + 2];
struct option longopts[OPTION_COUNT + 1];
int last_optind;
/* Starting the short option string with '-' is for programs that
expect options and other ARGV-elements in any order and that care about
the ordering of the two. We describe each non-option ARGV-element
as if it were the argument of an option with character code 1. */
shortopts[0] = '-';
is = 1;
il = 0;
for (i = 0; i < OPTION_COUNT; i++)
{
if (ld_options[i].shortopt != '\0')
{
shortopts[is] = ld_options[i].shortopt;
++is;
if (ld_options[i].opt.has_arg == required_argument
|| ld_options[i].opt.has_arg == optional_argument)
{
shortopts[is] = ':';
++is;
if (ld_options[i].opt.has_arg == optional_argument)
{
shortopts[is] = ':';
++is;
}
}
}
if (ld_options[i].opt.name != NULL)
{
longopts[il] = ld_options[i].opt;
++il;
}
}
shortopts[is] = '\0';
longopts[il].name = NULL;
/* The -G option is ambiguous on different platforms. Sometimes it
specifies the largest data size to put into the small data
section. Sometimes it is equivalent to --shared. Unfortunately,
the first form takes an argument, while the second does not.
We need to permit the --shared form because on some platforms,
such as Solaris, gcc -shared will pass -G to the linker.
To permit either usage, we look through the argument list. If we
find -G not followed by a number, we change it into --shared.
This will work for most normal cases. */
for (i = 1; i < argc; i++)
if (strcmp (argv[i], "-G") == 0
&& (i + 1 >= argc
|| ! isdigit ((unsigned char) argv[i + 1][0])))
argv[i] = (char *) "--shared";
/* Because we permit long options to start with a single dash, and
we have a --library option, and the -l option is conventionally
used with an immediately following argument, we can have bad
results if somebody tries to use -l with a library whose name
happens to start with "ibrary", as in -li. We avoid problems by
simply turning -l into --library. This means that users will
have to use two dashes in order to use --library, which is OK
since that's how it is documented.
FIXME: It's possible that this problem can arise for other short
options as well, although the user does always have the recourse
of adding a space between the option and the argument. */
for (i = 1; i < argc; i++)
{
if (argv[i][0] == '-'
&& argv[i][1] == 'l'
&& argv[i][2] != '\0')
{
char *n;
n = (char *) xmalloc (strlen (argv[i]) + 20);
sprintf (n, "--library=%s", argv[i] + 2);
argv[i] = n;
}
}
last_optind = -1;
while (1)
{
int longind;
int optc;
/* Using last_optind lets us avoid calling ldemul_parse_args
multiple times on a single option, which would lead to
confusion in the internal static variables maintained by
getopt. This could otherwise happen for an argument like
-nx, in which the -n is parsed as a single option, and we
loop around to pick up the -x. */
if (optind != last_optind)
{
if (ldemul_parse_args (argc, argv))
continue;
last_optind = optind;
}
/* getopt_long_only is like getopt_long, but '-' as well as '--'
can indicate a long option. */
optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
if (optc == -1)
break;
switch (optc)
{
default:
fprintf (stderr,
_("%s: use the --help option for usage information\n"),
program_name);
1999-05-03 15:29:11 +08:00
xexit (1);
case 1: /* File name. */
lang_add_input_file (optarg, lang_input_file_is_file_enum,
(char *) NULL);
break;
case OPTION_IGNORE:
break;
case 'a':
/* For HP/UX compatibility. Actually -a shared should mean
``use only shared libraries'' but, then, we don't
currently support shared libraries on HP/UX anyhow. */
if (strcmp (optarg, "archive") == 0)
config.dynamic_link = false;
else if (strcmp (optarg, "shared") == 0
|| strcmp (optarg, "default") == 0)
config.dynamic_link = true;
else
einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
break;
case OPTION_ASSERT:
/* FIXME: We just ignore these, but we should handle them. */
if (strcmp (optarg, "definitions") == 0)
;
else if (strcmp (optarg, "nodefinitions") == 0)
;
else if (strcmp (optarg, "nosymbolic") == 0)
;
else if (strcmp (optarg, "pure-text") == 0)
;
else
einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
break;
case 'A':
ldfile_add_arch (optarg);
break;
case 'b':
lang_add_target (optarg);
break;
case 'c':
ldfile_open_command_file (optarg);
parser_input = input_mri_script;
yyparse ();
break;
case OPTION_CALL_SHARED:
config.dynamic_link = true;
break;
case OPTION_NON_SHARED:
config.dynamic_link = false;
break;
case OPTION_CREF:
command_line.cref = true;
link_info.notice_all = true;
break;
case 'd':
command_line.force_common_definition = true;
break;
case OPTION_DEFSYM:
lex_string = optarg;
lex_redirect (optarg);
parser_input = input_defsym;
parsing_defsym = 1;
yyparse ();
parsing_defsym = 0;
lex_string = NULL;
break;
case OPTION_DEMANGLE:
demangling = true;
break;
case OPTION_DYNAMIC_LINKER:
command_line.interpreter = optarg;
break;
case OPTION_EB:
command_line.endian = ENDIAN_BIG;
break;
case OPTION_EL:
command_line.endian = ENDIAN_LITTLE;
break;
case OPTION_EMBEDDED_RELOCS:
command_line.embedded_relocs = true;
break;
case OPTION_EXPORT_DYNAMIC:
case 'E': /* HP/UX compatibility. */
command_line.export_dynamic = true;
break;
case 'e':
lang_add_entry (optarg, true);
break;
case 'f':
if (command_line.auxiliary_filters == NULL)
{
command_line.auxiliary_filters =
(char **) xmalloc (2 * sizeof (char *));
command_line.auxiliary_filters[0] = optarg;
command_line.auxiliary_filters[1] = NULL;
}
else
{
int c;
char **p;
c = 0;
for (p = command_line.auxiliary_filters; *p != NULL; p++)
++c;
command_line.auxiliary_filters =
(char **) xrealloc (command_line.auxiliary_filters,
(c + 2) * sizeof (char *));
command_line.auxiliary_filters[c] = optarg;
command_line.auxiliary_filters[c + 1] = NULL;
}
break;
case 'F':
command_line.filter_shlib = optarg;
break;
case OPTION_FORCE_EXE_SUFFIX:
command_line.force_exe_suffix = true;
break;
case 'G':
{
char *end;
g_switch_value = strtoul (optarg, &end, 0);
if (*end)
einfo (_("%P%F: invalid number `%s'\n"), optarg);
}
break;
case 'g':
/* Ignore. */
break;
case OPTION_GC_SECTIONS:
command_line.gc_sections = true;
break;
case OPTION_HELP:
help ();
xexit (0);
break;
case 'L':
ldfile_add_library_path (optarg, true);
break;
case 'l':
lang_add_input_file (optarg, lang_input_file_is_l_enum,
(char *) NULL);
break;
case 'M':
config.map_filename = "-";
break;
case 'm':
/* Ignore. Was handled in a pre-parse. */
break;
case OPTION_MAP:
config.map_filename = optarg;
break;
case 'N':
config.text_read_only = false;
config.magic_demand_paged = false;
config.dynamic_link = false;
break;
case 'n':
config.magic_demand_paged = false;
config.dynamic_link = false;
break;
case OPTION_NO_DEMANGLE:
demangling = false;
break;
case OPTION_NO_GC_SECTIONS:
command_line.gc_sections = false;
break;
case OPTION_NO_KEEP_MEMORY:
link_info.keep_memory = false;
break;
case OPTION_NO_UNDEFINED:
link_info.no_undefined = true;
break;
case OPTION_NO_WARN_MISMATCH:
command_line.warn_mismatch = false;
break;
case OPTION_NOINHIBIT_EXEC:
force_make_executable = true;
break;
case OPTION_NO_WHOLE_ARCHIVE:
whole_archive = false;
break;
case 'O':
/* FIXME "-O<non-digits> <value>" used to set the address of
section <non-digits>. Was this for compatibility with
something, or can we create a new option to do that
(with a syntax similar to -defsym)?
getopt can't handle two args to an option without kludges. */
/* Enable optimizations of output files. */
link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
break;
case 'o':
lang_add_output (optarg, 0);
break;
case OPTION_OFORMAT:
lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
break;
case 'i':
case 'r':
link_info.relocateable = true;
config.build_constructors = false;
config.magic_demand_paged = false;
config.text_read_only = false;
config.dynamic_link = false;
break;
case 'R':
/* The GNU linker traditionally uses -R to mean to include
only the symbols from a file. The Solaris linker uses -R
to set the path used by the runtime linker to find
libraries. This is the GNU linker -rpath argument. We
try to support both simultaneously by checking the file
named. If it is a directory, rather than a regular file,
we assume -rpath was meant. */
{
struct stat s;
if (stat (optarg, &s) >= 0
&& ! S_ISDIR (s.st_mode))
{
lang_add_input_file (optarg,
lang_input_file_is_symbols_only_enum,
(char *) NULL);
break;
}
}
/* Fall through. */
case OPTION_RPATH:
if (command_line.rpath == NULL)
command_line.rpath = buystring (optarg);
else
{
size_t rpath_len = strlen (command_line.rpath);
size_t optarg_len = strlen (optarg);
char *buf;
char *cp = command_line.rpath;
/* First see whether OPTARG is already in the path. */
do
{
size_t idx = 0;
while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
++idx;
if (optarg[idx] == '\0'
&& (cp[idx] == '\0' || cp[idx] == ':'))
/* We found it. */
break;
/* Not yet found. */
cp = strchr (cp, ':');
if (cp != NULL)
++cp;
}
while (cp != NULL);
if (cp == NULL)
{
buf = xmalloc (rpath_len + optarg_len + 2);
sprintf (buf, "%s:%s", command_line.rpath, optarg);
free (command_line.rpath);
command_line.rpath = buf;
}
}
break;
case OPTION_RPATH_LINK:
if (command_line.rpath_link == NULL)
command_line.rpath_link = buystring (optarg);
else
{
char *buf;
buf = xmalloc (strlen (command_line.rpath_link)
+ strlen (optarg)
+ 2);
sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
free (command_line.rpath_link);
command_line.rpath_link = buf;
}
break;
case OPTION_RELAX:
command_line.relax = true;
break;
case OPTION_RETAIN_SYMBOLS_FILE:
add_keepsyms_file (optarg);
break;
case 'S':
link_info.strip = strip_debugger;
break;
case 's':
link_info.strip = strip_all;
break;
case OPTION_SHARED:
if (config.has_shared)
link_info.shared = true;
else
einfo (_("%P%F: -shared not supported\n"));
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
command_line.soname = optarg;
break;
case OPTION_SORT_COMMON:
config.sort_common = true;
break;
case OPTION_STATS:
config.stats = true;
break;
case OPTION_SYMBOLIC:
link_info.symbolic = true;
break;
case 't':
trace_files = true;
break;
case 'T':
ldfile_open_command_file (optarg);
parser_input = input_script;
yyparse ();
break;
case OPTION_TBSS:
set_section_start (".bss", optarg);
break;
case OPTION_TDATA:
set_section_start (".data", optarg);
break;
case OPTION_TTEXT:
set_section_start (".text", optarg);
break;
case OPTION_TRADITIONAL_FORMAT:
link_info.traditional_format = true;
break;
case OPTION_TASK_LINK:
link_info.task_link = true;
/* Fall through - do an implied -r option. */
case OPTION_UR:
link_info.relocateable = true;
config.build_constructors = true;
config.magic_demand_paged = false;
config.text_read_only = false;
config.dynamic_link = false;
break;
case 'u':
ldlang_add_undef (optarg);
break;
case OPTION_VERBOSE:
ldversion (1);
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:
/* This output is intended to follow the GNU standards document. */
printf ("GNU ld %s\n", ld_program_version);
printf (_("Copyright 1997 Free Software Foundation, Inc.\n"));
printf (_("\
This program is free software; you may redistribute it under the terms of\n\
the GNU General Public License. This program has absolutely no warranty.\n"));
{
ld_emulation_xfer_type **ptr = ld_emulations;
printf (_(" Supported emulations:\n"));
while (*ptr)
{
printf (" %s\n", (*ptr)->emulation_name);
ptr++;
}
}
xexit (0);
break;
case OPTION_VERSION_SCRIPT:
/* This option indicates a small script that only specifies
version information. Read it, but don't assume that
we've seen a linker script. */
{
boolean hold_had_script;
hold_had_script = had_script;
ldfile_open_command_file (optarg);
had_script = hold_had_script;
parser_input = input_version_script;
yyparse ();
}
break;
case OPTION_VERSION_EXPORTS_SECTION:
/* This option records a version symbol to be applied to the
symbols listed for export to be found in the object files
.exports sections. */
command_line.version_exports_section = optarg;
break;
case OPTION_WARN_COMMON:
config.warn_common = true;
break;
case OPTION_WARN_CONSTRUCTORS:
config.warn_constructors = true;
break;
case OPTION_WARN_MULTIPLE_GP:
config.warn_multiple_gp = true;
break;
case OPTION_WARN_ONCE:
config.warn_once = true;
break;
case OPTION_WARN_SECTION_ALIGN:
config.warn_section_align = true;
break;
case OPTION_WHOLE_ARCHIVE:
whole_archive = true;
break;
case OPTION_WRAP:
add_wrap (optarg);
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 = xstrdup (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 = strtoul (optarg, NULL, 0);
1999-05-03 15:29:11 +08:00
break;
case OPTION_SPLIT_BY_FILE:
config.split_by_file = true;
break;
case OPTION_CHECK_SECTIONS:
command_line.check_section_addresses = true;
break;
case OPTION_NO_CHECK_SECTIONS:
command_line.check_section_addresses = false;
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;
case OPTION_MPC860C0:
link_info.mpc860c0 = 20; /* default value (in bytes) */
if (optarg)
{
unsigned words;
words = is_num (optarg, 1, 10, 0);
if (words == 0)
{
fprintf (stderr,
_("%s: Invalid argument to option \"mpc860c0\"\n"),
program_name);
1999-05-03 15:29:11 +08:00
xexit (1);
}
link_info.mpc860c0 = words * 4; /* convert words to bytes */
}
command_line.relax = true;
break;
case OPTION_INIT:
link_info.init_function = optarg;
break;
case OPTION_FINI:
link_info.fini_function = optarg;
break;
1999-05-03 15:29:11 +08:00
}
}
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, PATH_SEPARATOR);
if (p != NULL)
*p = '\0';
if (*dirlist_ptr != '\0')
ldfile_add_library_path (dirlist_ptr, true);
if (p == NULL)
break;
dirlist_ptr = p + 1;
}
}
static void
set_section_start (sect, valstr)
char *sect, *valstr;
{
const char *end;
bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1999-05-03 15:29:11 +08:00
if (*end)
einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
lang_section_start (sect, exp_intop (val));
}
/* Print help messages for the options. */
static void
help ()
{
int i;
const char **targets, **pp;
printf (_("Usage: %s [options] file...\n"), program_name);
printf (_("Options:\n"));
for (i = 0; i < OPTION_COUNT; i++)
{
if (ld_options[i].doc != NULL)
{
boolean comma;
int len;
int j;
printf (" ");
comma = false;
len = 2;
j = i;
do
{
if (ld_options[j].shortopt != '\0'
&& ld_options[j].control != NO_HELP)
{
printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
len += (comma ? 2 : 0) + 2;
if (ld_options[j].arg != NULL)
{
if (ld_options[j].opt.has_arg != optional_argument)
{
printf (" ");
++len;
}
printf ("%s", _(ld_options[j].arg));
len += strlen (_(ld_options[j].arg));
}
comma = true;
}
++j;
}
while (j < OPTION_COUNT && ld_options[j].doc == NULL);
j = i;
do
{
if (ld_options[j].opt.name != NULL
&& ld_options[j].control != NO_HELP)
{
printf ("%s-%s%s",
comma ? ", " : "",
ld_options[j].control == TWO_DASHES ? "-" : "",
ld_options[j].opt.name);
len += ((comma ? 2 : 0)
+ 1
+ (ld_options[j].control == TWO_DASHES ? 1 : 0)
+ strlen (ld_options[j].opt.name));
if (ld_options[j].arg != NULL)
{
printf (" %s", _(ld_options[j].arg));
len += 1 + strlen (_(ld_options[j].arg));
}
comma = true;
}
++j;
}
while (j < OPTION_COUNT && ld_options[j].doc == NULL);
if (len >= 30)
{
printf ("\n");
len = 0;
}
for (; len < 30; len++)
putchar (' ');
printf ("%s\n", _(ld_options[i].doc));
}
}
/* Note: Various tools (such as libtool) depend upon the
format of the listings below - do not change them. */
1999-05-03 15:29:11 +08:00
/* xgettext:c-format */
printf (_("%s: supported targets:"), program_name);
1999-05-03 15:29:11 +08:00
targets = bfd_target_list ();
for (pp = targets; *pp != NULL; pp++)
printf (" %s", *pp);
free (targets);
printf ("\n");
/* xgettext:c-format */
printf (_("%s: supported emulations: "), program_name);
1999-05-03 15:29:11 +08:00
ldemul_list_emulations (stdout);
printf ("\n");
/* xgettext:c-format */
printf (_("%s: emulation specific options:\n"), program_name);
ldemul_list_emulation_options (stdout);
printf ("\n");
2000-04-03 22:10:05 +08:00
printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1999-05-03 15:29:11 +08:00
}