diff --git a/configure.in b/configure.in
index 765331962..a7c6e7388 100644
--- a/configure.in
+++ b/configure.in
@@ -121,6 +121,8 @@ AC_SUBST(CATMANEXT)
 
 AC_TEST_PACKAGE(readline,readline.h,libreadline.a,-lreadline)
 
+AC_PATH_XTRA
+
 AC_C_BIGENDIAN
 AC_C_INLINE