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#!/bin/bash -eu
#
# 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
# or
# SOURCE_DATE_EPOCH=1544192417 ./build.bash
# .
cd "$(dirname "$0")"
MYDIR=$PWD
# Make sure we have the go binary
go version > /dev/null
# GOPATH may contain multiple paths separated by ":"
GOPATH1=$(go env GOPATH | cut -f1 -d:)
if [[ $PWD != *"/src/github.com/rfjakob/gocryptfs" ]] ; then
echo "Warning: Building outside of GOPATH will most likely fail."
echo " Please rename $PWD to $GOPATH1/src/github.com/rfjakob/gocryptfs ."
sleep 5
echo
fi
# gocryptfs version according to git or a VERSION file
if [[ -d .git ]] ; then
GITVERSION=$(git describe --tags --dirty)
GITBRANCH=$(git rev-parse --abbrev-ref HEAD)
if [[ -n $GITBRANCH && $GITBRANCH != master ]] ; then
GITVERSION="$GITVERSION.$GITBRANCH"
fi
elif [[ -f VERSION ]] ; then
GITVERSION=$(cat VERSION)
else
echo "Warning: could not determine gocryptfs version"
GITVERSION="[unknown]"
fi
# go-fuse version, if available
if [[ -d vendor/github.com/hanwen/go-fuse ]] ; then
GITVERSIONFUSE="[vendored]"
else
# 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 [[ $FAIL -eq 0 ]]; then
GITVERSIONFUSE=$OUT
else
echo "$PWD: git describe: $OUT"
echo "Warning: could not determine go-fuse version"
GITVERSIONFUSE="[unknown]"
fi
cd "$MYDIR"
fi
# Build date, something like "2017-09-06". Don't override BUILDDATE
# if it is already set. This may be done for reproducible builds.
if [[ -z ${BUILDDATE:-} ]] ; then
BUILDDATE=$(date +%Y-%m-%d)
fi
# If SOURCE_DATE_EPOCH is set, it overrides BUILDDATE. This is the
# standard environment variable for faking the date in reproducible builds.
if [[ -n ${SOURCE_DATE_EPOCH:-} ]] ; then
BUILDDATE=$(date --utc --date="@${SOURCE_DATE_EPOCH}" +%Y-%m-%d)
fi
# For reproducible builds, we get rid of $HOME references in the binary
# using "-trimpath".
# Note: we have to set both -gcflags and -asmflags because otherwise
# "$HOME/go/src/golang.org/x/sys/unix/asm_linux_amd64.s" stays in the binary.
GV=$(go version)
if [[ $GV == *"1.7"* ]] || [[ $GV == *"1.8"* ]] || [[ $GV == *"1.9"* ]] ; then
TRIM="-trimpath=${GOPATH1}/src"
else
# Go 1.10 changed the syntax. You now have to prefix "all=" to affect
# all compiled packages.
TRIM="all=-trimpath=${GOPATH1}/src"
fi
GO_LDFLAGS="-X main.GitVersion=$GITVERSION -X main.GitVersionFuse=$GITVERSIONFUSE -X main.BuildDate=$BUILDDATE"
# If LDFLAGS is set, add it as "-extldflags".
if [[ -n ${LDFLAGS:-} ]] ; then
GO_LDFLAGS="$GO_LDFLAGS \"-extldflags=$LDFLAGS\""
fi
# Actual "go build" call for gocryptfs
go build "-ldflags=$GO_LDFLAGS" "-gcflags=$TRIM" "-asmflags=$TRIM" "$@"
# Additional binaries
(cd gocryptfs-xray; go build "-ldflags=$GO_LDFLAGS" "-gcflags=$TRIM" "-asmflags=$TRIM" "$@")
(cd contrib/statfs; go build "-ldflags=$GO_LDFLAGS" "-gcflags=$TRIM" "-asmflags=$TRIM" "$@")
./gocryptfs -version
mkdir -p "$GOPATH1/bin"
cp -af gocryptfs "$GOPATH1/bin"
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