[PATCH 2/6] Remove build dependency on git

[Timo Juhani Lindfors]

If BUILD_HEAD and BUILD_BRANCH are passed as an argument the build no
longer calls git. This makes building qi possible from a source
tarball that no longer has ".git" without having to fear that git
finds some unrelated ".git" in some parent directory.
---
 Makefile |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 5421478..5f4e779 100644
--- a/Makefile
+++ b/Makefile
@@ -18,8 +18,8 @@ include config.mk
 
 BUILD_DATE := $(shell date --iso-8601=seconds)
 BUILD_HOST := $(shell hostname)
-BUILD_BRANCH := $(shell git branch | grep ^\* | cut -d' ' -f2)
-BUILD_HEAD := $(shell git show --pretty=oneline | head -n1 | cut -d' ' -f1 | cut -b1-16)
+BUILD_BRANCH ?= $(shell git branch | grep ^\* | cut -d' ' -f2)
+BUILD_HEAD ?= $(shell git show --pretty=oneline | head -n1 | cut -d' ' -f1 | cut -b1-16)
 BUILD_VERSION := ${BUILD_BRANCH}_${BUILD_HEAD}
 
 LDS	= src/cpu/$(CPU)/qi.lds
-- 
1.7.2.5