-VERSION = $(shell git-describe)
-WTDIRTY = $(shell git-diff-index --name-only HEAD 2>/dev/null)
-CFLAGS += '-DVERSION="$(VERSION)$(if $(WTDIRTY),-dirty)"'
+GITDESC = $(subst tig-,,$(shell git describe))
+WTDIRTY = $(if $(shell git-diff-index HEAD 2>/dev/null),-dirty)
+VERSION = $(GITDESC)$(WTDIRTY)
+CFLAGS += '-DVERSION="tig-$(VERSION)"'