# 02110-1301 USA
-dnl FIXME: Is this really new enough?
-AC_PREREQ(2.50)
+AC_PREREQ(2.64)
+dnl Disable libtool 1.5 support for languages we don't use
+define([AC_LIBTOOL_LANG_CXX_CONFIG], [:])dnl
+define([AC_LIBTOOL_LANG_F77_CONFIG], [:])dnl
+define([AC_LIBTOOL_LANG_GCJ_CONFIG], [:])dnl
## ------------------------ ##
## Autoconf initialisation. ##