diff --git a/configure b/configure
index 6d918c80f7..5c13369ef7 100755
--- a/configure
+++ b/configure
@@ -295,7 +295,7 @@ filter(){
     pat=$1
     shift
     for v; do
-        case "$v" in $pat) echo "$v" ;; esac
+        eval "case $v in $pat) echo $v ;; esac"
     done
 }