configure: Use AC_PROG_LIBTOOL

This apparently helps autoreconf know we're using libtool.

diff --git a/configure.ac b/configure.ac
index c1e5eb5362af11ad1d8f172d9a639de83a3c7722..c487ff1ac1af2253a58c79067df953233129e02b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -25,6 +25,7 @@ fi
 changequote([,])dnl
 
 # Initialize libtool
+AC_PROG_LIBTOOL
 LT_PREREQ([2.2])
 LT_INIT