--- /dev/null
+# subdirmk example - subdirectory rules
+# Copyright 2019 Mark Wooding
+# Copyright 2019 Ian Jackson
+# SPDX-License-Identifier: LGPL-2.0-or-later
+
+&TARGETS += & toy
+
+&OBJECTS += & toy.o
+&LIBS += lib/libtoy.a
+
+&toy: $(&OBJECTS) $(&LIBS)
+ $(LINK) $^
+
+# This is a hook for subdirmk's test suite.
+&:-include src/for-test.sd.mk