--- configure.in.orig	2011-08-22 13:07:45.000000000 +0900
+++ configure.in	2011-08-22 13:08:00.000000000 +0900
@@ -19,7 +19,7 @@
 fi
 
 echo -n "checking Ruby/Romkan... "
-if ruby -rromkan -e 'exit(if Romkan::VERSION >= "0.3" then 0 else 1 end)'; then
+if ruby -Ke -rromkan -e 'exit(if Romkan::VERSION >= "0.3" then 0 else 1 end)'; then
    echo found
 else
    echo not found