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authorH.J. Lu <hjl.tools@gmail.com>2000-06-17 23:08:19 +0000
committerH.J. Lu <hjl.tools@gmail.com>2000-06-17 23:08:19 +0000
commit79c6de76fddecc72856b7f62a8241218a4f68f4f (patch)
treeb9075d99c9e89b3dbb389563c52f5aecebee6da0 /include/getopt.h
parent607723e4964fcccba90457449351fb79c5aded1a (diff)
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2000-06-17 H.J. Lu <hjl@gnu.org>
* getopt.h: Updated from gcc. * libiberty.h: Likewise. * symcat.h: Likewise.
Diffstat (limited to 'include/getopt.h')
-rw-r--r--include/getopt.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/getopt.h b/include/getopt.h
index fb30719..9620fc7 100644
--- a/include/getopt.h
+++ b/include/getopt.h
@@ -99,13 +99,20 @@ struct option
#define optional_argument 2
#if defined (__STDC__) && __STDC__
-#ifdef __GNU_LIBRARY__
+/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
+ undefined, we haven't run the autoconf check so provide the
+ declaration without arguments. If it is 0, we checked and failed
+ to find the declaration so provide a fully prototyped one. If it
+ is 1, we found it so don't provide any declaration at all. */
+#if defined (__GNU_LIBRARY__) || (defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT)
/* 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__ */
+# if !defined (HAVE_DECL_GETOPT)
extern int getopt ();
+# endif
#endif /* __GNU_LIBRARY__ */
extern int getopt_long (int argc, char *const *argv, const char *shortopts,
const struct option *longopts, int *longind);