Index: autogen.sh
==================================================================
--- autogen.sh
+++ autogen.sh
@@ -1,11 +1,13 @@
 #!/bin/sh
 set -e
 
 # Set a version for OpenBSD
-: ${AUTOCONF_VERSION:=2.71}
-: ${AUTOMAKE_VERSION:=1.16}
-export AUTOCONF_VERSION AUTOMAKE_VERSION
+if test x"$(uname -s)" = x"OpenBSD"; then
+	: ${AUTOCONF_VERSION:=2.71}
+	: ${AUTOMAKE_VERSION:=1.16}
+	export AUTOCONF_VERSION AUTOMAKE_VERSION
+fi
 
 aclocal -I build-aux/m4
 autoconf
 autoheader