diff --git a/common/Makefile.inc b/common/Makefile.inc
new file mode 100644
index 0000000..b8e4f35
--- /dev/null
+++ b/common/Makefile.inc
@@ -0,0 +1,10 @@
+hw-y += hw.ads
+hw-y += hw-mmio_range.ads
+hw-y += hw-mmio_regs.adb
+hw-y += hw-mmio_regs.ads
+hw-y += hw-port_io.adb
+hw-y += hw-port_io.ads
+hw-y += hw-sub_regs.ads
+hw-y += hw-time.ads
+hw-y += hw-time.adb
+hw-y += hw-time-timer.ads