we use the functions provided by these macros, so make sure we call them
http://bugs.gentoo.org/218666
--- configure.ac+++ configure.ac@@ -31,6 +31,8 @@SHARED_VERSION_INFO="1:17:0"
AC_PROG_CC
+AM_PROG_CC_C_O+AC_PROG_CXXAM_PROG_LIBTOOL
AC_CHECK_PROG(autogen, autogen, yes, no)