diff --git a/configure.ac b/configure.ac
index bcc1ae5..40e33ae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,7 @@ AM_PROG_CC_STDC
 AC_ISC_POSIX
 AM_PROG_LEX
 AC_PROG_YACC
+AC_PROG_LIBTOOL
 
 AC_HEADER_STDC([])