diff --git a/configure b/configure
index 53198e8..2dc8eb9 100755
--- a/configure
+++ b/configure
@@ -420,6 +420,7 @@ if [ "$debug" = "yes" ]; then
     CFLAGS="-O1 -g $CFLAGS"
 else
     CFLAGS="-O4 -ffast-math $CFLAGS"
+    LDFLAGS="-ffast-math $LDFLAGS"
 fi
 
 if cc_check "stdio.h" "" "fseeko(stdin,0,0);" ; then