/* Declarations for getopt.
- Copyright (C) 1989-1994,1996-1999,2001,2003,2004
+ Copyright (C) 1989-1994,1996-1999,2001,2003,2004,2005,2006
Free Software Foundation, Inc.
This file is part of the GNU C Library.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _GETOPT_H
#if defined __GETOPT_PREFIX && !defined __need_getopt
# include <stdlib.h>
# include <stdio.h>
-# if HAVE_UNISTD_H
-# include <unistd.h>
-# endif
+# include <unistd.h>
+# undef __need_getopt
# undef getopt
# undef getopt_long
# undef getopt_long_only
# undef opterr
# undef optind
# undef optopt
-# ifndef __CONCAT
-# define __CONCAT(x, y) x ## y
-# endif
-# define getopt __CONCAT (__GETOPT_PREFIX, getopt)
-# define getopt_long __CONCAT (__GETOPT_PREFIX, getopt_long)
-# define getopt_long_only __CONCAT (__GETOPT_PREFIX, getopt_long_only)
-# define optarg __CONCAT (__GETOPT_PREFIX, optarg)
-# define opterr __CONCAT (__GETOPT_PREFIX, opterr)
-# define optind __CONCAT (__GETOPT_PREFIX, optind)
-# define optopt __CONCAT (__GETOPT_PREFIX, optopt)
+# define __GETOPT_CONCAT(x, y) x ## y
+# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# define getopt __GETOPT_ID (getopt)
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
#endif
/* Standalone applications get correct prototypes for getopt_long and
getopt_long_only; they declare "char **argv". libc uses prototypes
with "char *const *argv" that are incorrect because getopt_long and
getopt_long_only can permute argv; this is required for backward
- compatibility (e.g., for LSB 2.0.1). */
-#if defined __GETOPT_PREFIX && !defined __need_getopt
-# define __getopt_argv_const /* empty */
-#else
-# define __getopt_argv_const const
+ compatibility (e.g., for LSB 2.0.1).
+
+ This used to be `#if defined __GETOPT_PREFIX && !defined __need_getopt',
+ but it caused redefinition warnings if both unistd.h and getopt.h were
+ included, since unistd.h includes getopt.h having previously defined
+ __need_getopt.
+
+ The only place where __getopt_argv_const is used is in definitions
+ of getopt_long and getopt_long_only below, but these are visible
+ only if __need_getopt is not defined, so it is quite safe to rewrite
+ the conditional as follows:
+*/
+#if !defined __need_getopt
+# if defined __GETOPT_PREFIX
+# define __getopt_argv_const /* empty */
+# else
+# define __getopt_argv_const const
+# endif
#endif
/* If __GNU_LIBRARY__ is not already defined, either we are being used
scanning, explicitly telling `getopt' that there are no more
options.
- If OPTS begins with `--', then non-option arguments are treated as
- arguments to the option '\0'. This behavior is specific to the GNU
- `getopt'. */
+ If OPTS begins with `-', then non-option arguments are treated as
+ arguments to the option '\1'. This behavior is specific to the GNU
+ `getopt'. If OPTS begins with `+', or POSIXLY_CORRECT is set in
+ the environment, then do not permute arguments. */
extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
__THROW;