libgocryptfs/build.bash
Jakob Unterwurzacher 830cbb7218 build.bash: make reproduceable builds easier
* Reduce the build time precision from seconds to days
* Allow to specify an arbitrary build date through an
  env variable
2017-09-06 21:41:22 +02:00

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#!/bin/bash
#
# Compile gocryptfs and bake the git version string of itself and the go-fuse
# library into the binary.
#
# If you want to fake a build date to reproduce a specific build,
# you can use:
# BUILDDATE=2017-02-03 ./build.bash
set -eu
cd "$(dirname "$0")"
MYDIR=$PWD
# GOPATH may contain multiple paths separated by ":"
GOPATH1=$(go env GOPATH | cut -f1 -d:)
# gocryptfs version according to git
GITVERSION=$(git describe --tags --dirty)
# go-fuse version according to git
# Note: git in CentOS 7 does not have "git -C" yet, so we use plain "cd".
FAIL=0
cd $GOPATH1/src/github.com/hanwen/go-fuse
OUT=$(git describe --tags --dirty 2>&1) || FAIL=1
if [[ $FAIL -ne 0 ]]; then
echo "$PWD: git describe: $OUT"
echo "Hint: are you missing git tags?"
exit 1
fi
GITVERSIONFUSE=$OUT
cd "$MYDIR"
# Build date, something like "2017-09-06"
if [[ -z ${BUILDDATE:-} ]] ; then
BUILDDATE=$(date +%Y-%m-%d)
fi
# Make sure we have the go binary
go version > /dev/null
LDFLAGS="-X main.GitVersion=$GITVERSION -X main.GitVersionFuse=$GITVERSIONFUSE -X main.BuildDate=$BUILDDATE"
go build "-ldflags=$LDFLAGS" $@
(cd gocryptfs-xray; go build $@)
./gocryptfs -version
mkdir -p $GOPATH1/bin
cp -af gocryptfs $GOPATH1/bin