1 files changed, 6 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 7b28523..db356c8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,15 @@
 default:app.dummy
 
-app.dummy:
+app.dummy: libopencm3.dummy
 	make -C app
 
-libopencm3.dummy:
+libopencm3.dummy: libopencm3/Makefile
 	make -C libopencm3
 
 clean:
 	make -C app $@
 	make -C libopencm3 $@
+
+libopencm3/Makefile:
+	git submodule init
+	git submodule update