/* Declarations for getopt.
- Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.
-
- NOTE: The canonical source of this file is maintained with the GNU C Library.
- Bugs can be reported to bug-glibc@gnu.org.
-
- This program 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.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- USA. */
+ * Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.
+ *
+ * NOTE: The canonical source of this file is maintained with the GNU C Library.
+ * Bugs can be reported to bug-glibc@gnu.org.
+ *
+ * This program 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.
+ *
+ * This program 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 this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef _GETOPT_H
#define _GETOPT_H 1
-#ifdef __cplusplus
+/*
+ * The operating system may or may not provide getopt_long(), and if
+ * so it may or may not be a version we are willing to use. Our
+ * strategy is to declare getopt here, and then provide code unless
+ * the supplied version is adequate. The difficult case is when a
+ * declaration for getopt is provided, as our declaration must match.
+ *
+ * XXX Arguably this version should be named differently, and the
+ * local names defined to refer to the system version when we choose
+ * to use the system version.
+ */
+
+#ifdef __cplusplus
extern "C" {
#endif
one). For long options that have a zero `flag' field, `getopt'
returns the contents of the `val' field. */
-struct option
-{
-#if defined (__STDC__) && __STDC__
- const char *name;
+struct option {
+#if defined(__STDC__) && __STDC__
+ const char *name;
#else
- char *name;
+ char *name;
#endif
- /* has_arg can't be an enum because some compilers complain about
- type mismatches in all the code that assumes it is an int. */
- int has_arg;
- int *flag;
- int val;
+ /* has_arg can't be an enum because some compilers complain about
+ type mismatches in all the code that assumes it is an int. */
+ int has_arg;
+ int *flag;
+ int val;
};
/* Names for the values of the `has_arg' field of `struct option'. */
#define required_argument 1
#define optional_argument 2
-#if defined (__STDC__) && __STDC__
-#if defined (__GNU_LIBRARY__) || defined (__EXTENSIONS__)
-/* Many other libraries have conflicting prototypes for getopt, with
- differences in the consts, in stdlib.h. To avoid compilation
- errors, only prototype getopt for the GNU C library. */
-extern int getopt (int argc, char *const *argv, const char *shortopts);
-#else /* not __GNU_LIBRARY__ or __EXTENSIONS__ */
-extern int getopt (void);
-#endif /* __GNU_LIBRARY__ */
-extern int getopt_long (int argc, char *const *argv, const char *shortopts,
- const struct option *longopts, int *longind);
-extern int getopt_long_only (int argc, char *const *argv,
- const char *shortopts,
- const struct option *longopts, int *longind);
+#if defined(__STDC__) && __STDC__
+
+#if REALLY_NEED_PLAIN_GETOPT
+
+/*
+ * getopt is defined in POSIX.2. Assume that if the system defines
+ * getopt that it complies with POSIX.2. If not, an autoconf test
+ * should be written to define NONPOSIX_GETOPT_DEFINITION.
+ */
+#ifndef NONPOSIX_GETOPT_DEFINITION
+extern int getopt(int argc, char *const *argv, const char *shortopts);
+#else /* NONPOSIX_GETOPT_DEFINITION */
+extern int getopt(void);
+#endif /* NONPOSIX_GETOPT_DEFINITION */
+
+#endif
+
+
+extern int getopt_long(int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind);
+extern int getopt_long_only(int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind);
/* Internal only. Users should not call this directly. */
-extern int _getopt_internal (int argc, char *const *argv,
- const char *shortopts,
- const struct option *longopts, int *longind,
- int long_only);
+extern int _getopt_internal(int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind,
+ int long_only);
#else /* not __STDC__ */
-extern int getopt ();
-extern int getopt_long ();
-extern int getopt_long_only ();
-extern int _getopt_internal ();
+#ifdef REALLY_NEED_PLAIN_GETOPT
+extern int getopt();
+#endif /* REALLY_NEED_PLAIN_GETOPT */
+
+extern int getopt_long();
+extern int getopt_long_only();
+
+extern int _getopt_internal();
+
#endif /* __STDC__ */
-#ifdef __cplusplus
+#ifdef __cplusplus
}
#endif
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