--- /dev/null
+# subdirmk example - subdirectory rules
+# Copyright 2019 Mark Wooding
+# Copyright 2019 Ian Jackson
+# SPDX-License-Identifier: LGPL-2.0-or-later
+
+&TARGETS += & libtoy.a
+
+&OBJECTS += & toylib.o
+
+&libtoy.a: $(&OBJECTS)
+ $(AR) rc $@ $^