X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Fgetopt.h;h=eca40f43a973ce0fa6dabd902123cf969acb1ae8;hb=90d5b7e6ca44f502355b18a56c0ed3e721cf2df4;hp=45541f5ac0f96d1125f63208961f52ecde06051e;hpb=e98fe4f7b54cbdf29aef9287bbb1bea8801dd05a;p=deliverable%2Fbinutils-gdb.git

diff --git a/include/getopt.h b/include/getopt.h
index 45541f5ac0..eca40f43a9 100644
--- a/include/getopt.h
+++ b/include/getopt.h
@@ -1,5 +1,8 @@
 /* Declarations for getopt.
-   Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+   Copyright (C) 1989-2020 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
@@ -13,7 +16,8 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
 
 #ifndef _GETOPT_H
 #define _GETOPT_H 1
@@ -36,7 +40,7 @@ extern char *optarg;
 
    On entry to `getopt', zero means this is the first call; initialize.
 
-   When `getopt' returns EOF, this is the index of the first of the
+   When `getopt' returns -1, this is the index of the first of the
    non-option elements that the caller should itself scan.
 
    Otherwise, `optind' communicates from one call to the next
@@ -76,7 +80,7 @@ extern int optopt;
 
 struct option
 {
-#if	__STDC__
+#if defined (__STDC__) && __STDC__
   const char *name;
 #else
   char *name;
@@ -94,15 +98,25 @@ struct option
 #define required_argument	1
 #define optional_argument	2
 
-#if __STDC__
-#if defined(__GNU_LIBRARY__)
+#if defined (__STDC__) && __STDC__
+/* 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 !HAVE_DECL_GETOPT
+#if defined (__GNU_LIBRARY__) || defined (HAVE_DECL_GETOPT)
 /* Many other libraries have conflicting prototypes for getopt, with
-   differences in the consts, in stdlib.h.  To avoid compilation
+   differences in the consts, in unistd.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__ */
+#else
+#ifndef __cplusplus
 extern int getopt ();
-#endif /* not __GNU_LIBRARY__ */
+#endif /* __cplusplus */
+#endif
+#endif /* !HAVE_DECL_GETOPT */
+
 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,
@@ -120,10 +134,10 @@ extern int getopt_long ();
 extern int getopt_long_only ();
 
 extern int _getopt_internal ();
-#endif /* not __STDC__ */
+#endif /* __STDC__ */
 
 #ifdef	__cplusplus
 }
 #endif
 
-#endif /* _GETOPT_H */
+#endif /* getopt.h */