Generate gitversion.h only in git checkouts

gjedeer · Nov 1, 2017 · 44a23bb · 44a23bb
1 parent c5438fb
commit 44a23bb
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/Makefile b/Makefile
@@ -14,9 +14,10 @@ INCLUDES = $(wildcard *.h)
 # Targets
 all: tuntox
 
-gitversion.h: .git/HEAD .git/index
-	@echo "  GEN   $@"
-	@echo "#define GITVERSION \"$(shell git rev-parse HEAD)\"" > $@
+gitversion.h: FORCE
+	@if [ -f .git/HEAD ] ; then echo "  GEN   $@"; echo "#define GITVERSION \"$(shell git rev-parse HEAD)\"" > $@; fi
+
+FORCE:
 
 tox_bootstrap.h: 
 	python generate_tox_bootstrap.py