X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=m4%2Fensc_kerneldir.m4;h=3a34fccfd0a79dde69c9385c0cc61b39b752f566;hb=05bfe19d376b0d44127dd3b9dc7dfc2ced0aaf3f;hp=bfb2cc1cd347bdcda5ea933cc5d1e34e727967e8;hpb=96b9bc3416686cb4080beb8bda4283edaefafbe2;p=util-vserver.git

diff --git a/m4/ensc_kerneldir.m4 b/m4/ensc_kerneldir.m4
index bfb2cc1..3a34fcc 100644
--- a/m4/ensc_kerneldir.m4
+++ b/m4/ensc_kerneldir.m4
@@ -1,4 +1,4 @@
-dnl $Id: ensc_kerneldir.m4,v 1.1.2.2 2004/01/26 18:21:28 ensc Exp $
+dnl $Id: ensc_kerneldir.m4,v 1.1.2.3 2004/03/04 03:12:34 ensc Exp $
 
 dnl Copyright (C) 2002 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
 dnl  
@@ -50,6 +50,8 @@ AC_DEFUN([ENSC_KERNEL_HEADERS],
 		ensc_cv_path_kernelheaders=$ensc_cv_path_kerneldir/include
 	])
 
-	$1=$ensc_cv_path_kernelheaders
-	AC_SUBST($1)
+	if test x"$1" != x; then
+		$1=$ensc_cv_path_kernelheaders
+		AC_SUBST($1)
+	fi
 ])