diff --git a/Makefile.in b/Makefile.in
index ab2da08..aeb2faa 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -296,6 +296,7 @@
 	$(top_srcdir)/m4/ax_cflags_warn_all.m4 \
 	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
 	$(top_srcdir)/m4/ax_compare_version.m4 \
+	$(top_srcdir)/m4/ax_compiler_vendor.m4 \
 	$(top_srcdir)/m4/ax_cxx_bool.m4 \
 	$(top_srcdir)/m4/ax_cxx_namespace_std.m4 \
 	$(top_srcdir)/m4/ax_cxx_namespaces.m4 \