1 files changed, 3 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 8b190c8..8eacc1f 100644
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,9 @@ SUB_VERSION := $(subst $(VERSION)-,,$(GIT_DESC))
 ifeq ($(VERSION), )
 	VERSION := unknown-dev
 endif
+ifeq ($(SUB_VERSION), )
+	SUB_VERSION := $(shell date +'%Y-%m-%d_%H%M%S')
+endif
 
 # for backward compatibility
 ifneq ($(origin INSTALL_DIR), undefined)