re PR libgomp/26308 (libgomp bootstrap failure on Tru64 UNIX V4.0F)

	PR libgomp/26308
	* config/posix/lock.c (_XOPEN_SOURCE): Don't define on Tru64 UNIX.

From-SVN: r126208

libgomp/ChangeLog

+2007-07-02  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	PR libgomp/26308
+	* config/posix/lock.c (_XOPEN_SOURCE): Don't define on Tru64 UNIX.
+
 2007-06-21  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/32362

libgomp/config/posix/lock.c

@@ -33,8 +33,12 @@
    to do better and streamline the locking as well as reduce the size
    of the types exported.  */
 
-/* We need Unix98 extensions to get recursive locks.  */
+/* We need Unix98 extensions to get recursive locks.  On Tru64 UNIX V4.0F,
+   the declarations are available without _XOPEN_SOURCE, which actually
+   breaks compilation.  */
+#ifndef __osf__
 #define _XOPEN_SOURCE 500
+#endif
 
 #include "libgomp.h"