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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 "$0")"
# Make sure we have the go binary
go version > /dev/null
# Enable Go Modules on Go 1.11 and 1.12
# https://dev.to/maelvls/why-is-go111module-everywhere-and-everything-about-go-modules-24k#-raw-go111module-endraw-with-go-111-and-112
export GO111MODULE=on
# GOPATH may contain multiple paths separated by ":"
GOPATH1=$(go env GOPATH | cut -f1 -d:)
# 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 Go Modules
FAIL=0
OUT=$(go list -m github.com/hanwen/go-fuse | cut -d' ' -f2) || FAIL=1
if [[ $FAIL -eq 0 ]]; then
GITVERSIONFUSE=$OUT
else
echo "Warning: could not determine go-fuse version"
GITVERSIONFUSE="[unknown]"
fi
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
# Only set GOFLAGS if it is not already set by the user
if [[ -z ${GOFLAGS:-} ]] ; then
GOFLAGS=""
# For reproducible builds, we get rid of $HOME references in the
# binary using "-trimpath".
# However, -trimpath needs Go 1.13+, and we support Go 1.11 and Go 1.12
# too. So don't add it there.
GV=$(go version)
if [[ $GV != *"1.11"* && $GV != *"1.12"* ]] ; then
GOFLAGS="-trimpath"
fi
# Also, Fedora and Arch want pie enabled, so enable it.
# * https://fedoraproject.org/wiki/Changes/golang-buildmode-pie
# * https://github.com/rfjakob/gocryptfs/pull/460
# But not with CGO_ENABLED=0 (https://github.com/golang/go/issues/30986)!
if [[ ${CGO_ENABLED:-1} -ne 0 ]] ; then
GOFLAGS="$GOFLAGS -buildmode=pie"
fi
export GOFLAGS
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" "$@"
# Additional binaries
(cd gocryptfs-xray; go build "-ldflags=$GO_LDFLAGS" "$@")
(cd contrib/statfs; go build "-ldflags=$GO_LDFLAGS" "$@")
./gocryptfs -version
mkdir -p "$GOPATH1/bin"
cp -af gocryptfs "$GOPATH1/bin"
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