diff --git a/core/dev/Makefile.core-dev b/core/dev/Makefile.core-dev
new file mode 100644
index 000000000..69a87393f
--- /dev/null
+++ b/core/dev/Makefile.core-dev
@@ -0,0 +1 @@
+core-dev_src = leds.c serial-line.c nullradio.c slip.c