build: Allow to define VERSION and COMMIT without git

Previously the build script required git to be used and installed which
did not allow to build Multus from a tarball which doesn't contain .git
directory. That made packaging of Multus hard.

Example usage after the change if you do not want to use git:

```
$ VERSION=v3.3 COMMIT=ba33df ./build
```

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
This commit is contained in:
Michal Rostecki 2019-10-25 09:43:31 +02:00 committed by Doug Smith
parent 8bdb7104d7
commit 84c348ce18

18
build
View File

@ -9,16 +9,18 @@ fi
# Add version/commit/date into binary
# In case of TravisCI, need to check error code of 'git describe'.
set +e
git describe --tags --abbrev=0 > /dev/null 2>&1
if [ "$?" != "0" ]; then
VERSION="master"
else
VERSION=$(git describe --tags --abbrev=0)
if [ -z "$VERSION" ]; then
set +e
git describe --tags --abbrev=0 > /dev/null 2>&1
if [ "$?" != "0" ]; then
VERSION="master"
else
VERSION=$(git describe --tags --abbrev=0)
fi
set -e
fi
set -e
DATE=$(date --iso-8601=seconds)
COMMIT=$(git rev-parse --verify HEAD)
COMMIT=${COMMIT:-$(git rev-parse --verify HEAD)}
LDFLAGS="-X main.version=${VERSION:-master} -X main.commit=${COMMIT} -X main.date=${DATE}"
export CGO_ENABLED=0