https://bugs.gentoo.org/816615
https://github.com/Xastir/Xastir/pull/181

--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,6 @@
 # It should look something like this:  ([xastir], [2.0.8], [xastir@xastir.org])
 # The revision number must contain at least one '.' and two digits.
 AC_INIT([xastir], [2.1.6], [xastir@xastir.org])
-AM_INIT_AUTOMAKE
 #########################################################################