diff --git a/configure b/configure
index f152cf9..1efe9cc 100755
--- a/configure
+++ b/configure
@@ -103,6 +103,7 @@ if test -z "$source_path" -o "$source_path" = "." ; then
 fi
 
 for opt do
+  eval opt=$opt
   case "$opt" in
   --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
   ;;