diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..218fb7c
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+set -e
+
+# Set a version for OpenBSD
+: ${AUTOCONF_VERSION:=2.69}
+: ${AUTOMAKE_VERSION:=1.16}
+export AUTOCONF_VERSION AUTOMAKE_VERSION
+
+aclocal -I build-aux/m4
+autoconf
diff --git a/m4/buildsys.m4 b/build-aux/m4/buildsys.m4
similarity index 100%
rename from m4/buildsys.m4
rename to build-aux/m4/buildsys.m4
diff --git a/configure.ac b/configure.ac
index 7d9a048..935aa46 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ AC_INIT(ObjIRC, 0.1, js@heap.zone)
 BUILDSYS_INIT
 
 AC_CONFIG_SRCDIR(src)
-AC_CONFIG_MACRO_DIR(m4)
+AC_CONFIG_MACRO_DIR(build-aux/m4)
 AC_CONFIG_AUX_DIR(build-aux)
 
 AC_CHECK_TOOL(OBJFW_CONFIG, objfw-config)