Tidied versioning in Makefile.
# No files with these names in top-level directory
.PHONY: docs test debug opt profile optprof clean coverage sanitize
-GITVERSION := $(shell git describe --abbrev=40 --always)
+GITVERSION := $(shell git describe --tags --abbrev=40)
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Linux)
GCC_FLAGS1 = -fPIC -Wl,-Bsymbolic-functions -c
