diff --git a/autogen.sh b/autogen.sh
index 61b87777d..5251cce2b 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -9,9 +9,16 @@ set -ex
 
 ./guile-aclocal.sh
 
-libtoolize --copy --automake --ltdl
+libtoolize --copy --force --automake --ltdl
 autoheader
 autoconf
 automake --add-missing
 
+# Make sure that libltdl uses the same autoconf version as the rest.
+#
+( echo "libltdl..."; cd libltdl; autoconf )
+
 ( echo "guile-readline..."; cd guile-readline; ./autogen.sh )
+
+echo "Now run configure and make."
+echo "You must pass the \`--enable-maintainer-mode' option to configure."