golang.sh

# Uncomment this for debugging output
#set -x

test ! -z "$(which clang 2>/dev/null)" && CC=clang || CC=gcc
GOOS=$(uname -s)
GOARCH=$(uname -m)
GOBASE=${HOME}/.goroot/${GOOS}/${GOARCH}
GOVERS_BSTRAP=1.4.3
GOFILE_BSTRAP=${HOME}/.goroot/go${GOVERS_BSTRAP}.src.tar.gz
GOURL_BSTRAP=https://storage.googleapis.com/golang/go${GOVERS_BSTRAP}.src.tar.gz
GOVERS_ACTIVE=1.7.3
GOFILE_ACTIVE=${HOME}/.goroot/go${GOVERS_ACTIVE}.src.tar.gz
GOURL_ACTIVE=https://storage.googleapis.com/golang/go${GOVERS_ACTIVE}.src.tar.gz

test ! -d ${GOBASE} && mkdir -p ${GOBASE}
# if we don't have our bootstrap version
cd ${GOBASE}
if test ! -e ${PWD}/bootstrap/bin/go; then
	test ! -e ${GOFILE_BSTRAP} && wget -c ${GOURL_BSTRAP} -O ${GOFILE_BSTRAP}
	tar -zxf ${GOFILE_BSTRAP} && mv go bootstrap
	cd ${GOBASE}/bootstrap/src && env CC=${CC} ./make.bash
fi
# and if we don't have our specified active version
cd ${GOBASE}
if test ! -e ${PWD}/${GOVERS_ACTIVE}/bin/go; then
	test ! -e ${GOFILE_ACTIVE} && wget -c ${GOURL_ACTIVE} -O ${GOFILE_ACTIVE}
	tar -zxf ${GOFILE_ACTIVE} && mv go ${GOVERS_ACTIVE}
	rm -f active && ln -s ${GOVERS_ACTIVE} active
	cd ${GOBASE}/${GOVERS_ACTIVE}/src && env CC=${CC} GOROOT_BOOTSTRAP=${GOBASE}/bootstrap ./make.bash
fi
cd ${HOME}
# This hurts nothing to stay uncommented
set +x

export GOROOT=${GOBASE}/active
export GOPATH=${HOME}/.gopath/$(uname -s)/$(uname -m)
test -z "$(echo $PATH|grep ${GOROOT}/bin) 2>/dev/null" || export PATH=${GOROOT}/bin:${PATH}
test -z "$(echo $PATH|grep ${GOPATH}/bin) 2>/dev/null" || export PATH=${GOPATH}/bin:${PATH}

test ! -d ${GOPATH} && mkdir -p ${GOPATH}
for d in src pkg; do
  test ! -d ${HOME}/.gopath/${d} && mkdir -p ${HOME}/.gopath/${d}
  test ! -L ${GOPATH}/${d} && ln -s ${HOME}/.gopath/${d} ${GOPATH}/${d}
done