Fix RT library autoconf foo.

diff --git a/configure.ac b/configure.ac
index aa91153c1a8a8366b66e5137b29119b10b311b63..615da41b5d6277e64ae804e955e9e2cc88316204 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -162,7 +162,8 @@ AX_CXX_GCC_ABI_DEMANGLE
 
 AC_CHECK_LIB([rt], [clock_gettime], 
              [
-              rt_lib="-lrt"
+              RT_LIB="-lrt"
+              AC_SUBST(RT_LIB)
               AC_DEFINE([HAVE_LIBRT], [ 1 ], [Have clock_gettime])
               ], 
              [