diff -Naur a/common.mk b/common.mk
--- a/common.mk	2015-02-19 14:37:51.171316542 -0800
+++ b/common.mk	2015-02-19 14:31:21.235607345 -0800
@@ -1,3 +1,5 @@
+.NOTPARALLEL:
+
 CC := $(CROSS)gcc
 AR := $(CROSS)ar
 RANLIB := $(CROSS)ranlib