diff --git a/configure.ac b/configure.ac
index 02e8c8e..fc875a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,6 +8,8 @@ AC_CONFIG_HEADERS(config.h)
 AC_CONFIG_AUX_DIR(build)
 AC_CONFIG_MACRO_DIR(build)
 AM_INIT_AUTOMAKE([1.8 gnu -Wall no-define])
+m4_pattern_allow([^LT_(CURRENT|REVISION|AGE)$])dnl
+AC_PROG_CC_C_O
 AC_LIBTOOL_WIN32_DLL dnl Must be called before AC_PROG_LIBTOOL
 AC_PROG_LIBTOOL dnl ([1.4]) Don't remove!
 GTK_DOC_CHECK([1.6])