diff -ruw src.orig/configure src/configure
--- src.orig/configure	2010-09-17 15:51:59.212939444 +0200
+++ src/configure	2010-09-17 15:52:36.402230770 +0200
@@ -688,7 +688,7 @@
     check_ld "$@" <<EOF && enable $func
 #include <math.h>
 float foo(float f) { return $func(f); }
-int main(void){ return 0; }
+int main(void){ return (int) foo; }
 EOF
 }