diff --git a/configure.ac b/configure.ac
index 4936aa01..dc7a6d16 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,6 +61,7 @@ AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_CANONICAL_HOST
 AM_PROG_CC_C_O
+AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL
 
 # set GCC options