From e994f6eddc607df563c67c33ef27a6fc8148cba6 Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Fri, 31 Oct 2003 05:42:53 +0000
Subject: [PATCH] While not illegal, attempt to pacify gcc -Wundef.  It just so
 happens that libtool-using packages seem to love using this flag.

/usr/include/sys/cdefs.h:184:5: warning: "__STDC_VERSION__" is not defined
/usr/include/sys/cdefs.h:372:5: warning: "_POSIX_C_SOURCE" is not defined
/usr/include/sys/cdefs.h:378:5: warning: "_POSIX_C_SOURCE" is not defined
---
 sys/sys/cdefs.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
index 7d0c953f942..f8eae841b38 100644
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -181,7 +181,7 @@
  * software that is unaware of C99 keywords.
  */
 #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
-#if __STDC_VERSION__ < 199901
+#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901
 #define	__restrict
 #else
 #define	__restrict	restrict
@@ -369,13 +369,13 @@
  */
 
 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
-#if _POSIX_C_SOURCE == 1
+#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1
 #undef _POSIX_C_SOURCE		/* Probably illegal, but beyond caring now. */
 #define	_POSIX_C_SOURCE		199009
 #endif
 
 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
-#if _POSIX_C_SOURCE == 2
+#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2
 #undef _POSIX_C_SOURCE
 #define	_POSIX_C_SOURCE		199209
 #endif