# Contributor: Sören Tempel <soeren+alpine@soeren-tempel.net>
# Maintainer: Eivind Uggedal <eivind@uggedal.com>
pkgname=go
pkgver=1.5.1
# This should be the latest commit on the corresponding release branch
_toolsver="d02228d1857b9f49cd0252788516ff5584266eb6"
pkgrel=3
pkgdesc="Go programming language compiler"
url="http://www.golang.org/"
arch="all"
license="BSD"
depends=""
depends_dev=""
makedepends="bash go-bootstrap"
options="!strip"
install=""
subpackages="$pkgname-doc $pkgname-tools $pkgname-cross"
source="http://golang.org/dl/go${pkgver}.src.tar.gz
	golang-tools-$pkgver.tar.gz::https://github.com/golang/tools/archive/${_toolsver}.tar.gz
	no-pic.patch
	default-sc-getpw-r-size-max.patch"

# NOTE: building go for x86 with grsec kernel requires:
#           sysctl -w kernel.modify_ldt=1

_gotools="cover vet godoc"
_gocross="darwin freebsd openbsd windows"

_builddir="$srcdir"/$pkgname
_tooldir="$srcdir"/tools-${_toolsver}

prepare() {
	local i
	cd "$_builddir"
	for i in $source; do
		case $i in
		*.patch) msg $i; patch -p1 -i "$srcdir"/$i || return 1;;
		esac
	done
}

build() {
	cd "$_builddir/src"

	export GOPATH="$srcdir"
	export GOROOT="$_builddir"
	export GOBIN="$GOROOT"/bin
	export GOROOT_FINAL=/usr/lib/go
	export GOROOT_BOOTSTRAP=/usr/lib/go-bootstrap

	case "$CARCH" in
	x86)	export GOARCH="386" ;;
	x86_64)	export GOARCH="amd64" ;;
	arm*)	export GOARCH="arm" ;;
	*)	return 1 ;;
	esac

	./make.bash --no-clean || return 1
	for os in $_gocross; do
		for arch in "386" "amd64"; do
			GOARCH=$arch GOOS=$os ./make.bash --no-clean || return 1
		done
	done

	# FIXME some tests fail:
	# PATH="$GOROOT/bin:$PATH" ./run.bash -no-rebuild || return 1

	mkdir -p "$GOPATH"/src/golang.org/x/tools
	cp -r "$_tooldir"/* "$GOPATH"/src/golang.org/x/tools

	for tool in $_gotools; do
		"$GOROOT"/bin/go install \
			golang.org/x/tools/cmd/$tool || return 1
	done
}

package() {
	cd "$_builddir"
	mkdir -p "$pkgdir"/usr/bin "$pkgdir"/usr/lib/go/bin "$pkgdir"/usr/share/doc/go

	for binary in go gofmt; do
		mv bin/"$binary" "$pkgdir"/usr/lib/go/bin/ || return 1
		ln -s /usr/lib/go/bin/"$binary" "$pkgdir"/usr/bin/ || return 1
	done

	# The source needs to be installed due to an upstream
	# bug (https://github.com/golang/go/issues/2775).
	# When this is resolved we can split out the source to a
	# go-doc sub package.
	cp -a pkg src "$pkgdir"/usr/lib/go || return 1
	cp -r doc misc "$pkgdir"/usr/share/doc/go || return 1

	# Remove tests from /usr/lib/go/src.
	# Those shouldn't be affacted by the upstream bug (see above).
	find "$pkgdir"/usr/lib/go/src \( -type f -a -name "*_test.go" \) \
		-exec rm -rf \{\} \+ || return 1
	find "$pkgdir"/usr/lib/go/src \( -type d -a -name "testdata" \) \
		-exec rm -rf \{\} \+ || return 1
	find "$pkgdir"/usr/lib/go/src \( -type f -a -name "*.bash" \) \
		-exec rm -rf \{\} \+ || return 1

	# Remove bootstrap files.
	rm -rf "$pkgdir"/usr/lib/go/pkg/bootstrap
}

tools() {
	pkgdesc="Go programming language tools"
	depends="$pkgname"

	mkdir -p "$subpkgdir"/usr/bin "$subpkgdir"/usr/lib/go/bin
	for binary in "$_builddir"/bin/*; do
		mv $binary "$subpkgdir"/usr/lib/go/bin || return 1
		ln -s /usr/lib/go/bin/"${binary##*/}" "$subpkgdir"/usr/bin/ || return 1
	done

	mkdir -p "$subpkgdir"/usr/lib/go/pkg/tool/linux_$GOARCH
	cp "$subpkgdir"/usr/lib/go/bin/godoc \
		"$pkgdir"/usr/lib/go/pkg/tool/linux_$GOARCH/godoc || return 1

	for tool in $_gotools; do
		mv "$pkgdir"/usr/lib/go/pkg/tool/linux_$GOARCH/$tool \
			"$subpkgdir"/usr/lib/go/pkg/tool/linux_$GOARCH/$tool || return 1
	done
}

cross() {
	pkgdesk="Go cross compilers"
	depends="$pkgname"

	mkdir -p "$subpkgdir"/usr/lib/go/pkg/tool
	for os in $_gocross; do
		mv "$pkgdir"/usr/lib/go/pkg/tool/${os}_* \
			"$subpkgdir"/usr/lib/go/pkg/tool || return 1
		mv "$pkgdir"/usr/lib/go/pkg/${os}_* \
			"$subpkgdir"/usr/lib/go/pkg || return 1
	done
}

md5sums="4adfbdfca523cc1c229be8a321f3602f  go1.5.1.src.tar.gz
c64b28ba5df8499bcc19adc995da991a  golang-tools-1.5.1.tar.gz
b303cb36017c5f1303b1567b31b48de3  no-pic.patch
12a36502180b9801f8d9e60824563c92  default-sc-getpw-r-size-max.patch"
sha256sums="a889873e98d9a72ae396a9b7dd597c29dcd709cafa9097d9c4ba04cff0ec436b  go1.5.1.src.tar.gz
80db6fc563df50eb924dbf4f96cef287fc6b89cc8b98595c1dac3c80a118f290  golang-tools-1.5.1.tar.gz
973144c68d10cdc740501ad814841912bae7c3936480fabb3f7fe092ba82ba7f  no-pic.patch
70f8f9b3ad6b8639db2b401ae14747a6e8d762443ca054c358a5aa4815df7d1f  default-sc-getpw-r-size-max.patch"
sha512sums="a3e92058c79502cfcb7d67143db67fef97393a416322b6f8b6c52b70879e7ab56e3cec94a9ca8046cc13b134845cc1e4b53c70d7208850092bf4edf04bf439ff  go1.5.1.src.tar.gz
80813c2da74c7b25fa2cfd15b2505757e7f466469ac701cb22d190dc83a607f091c4dea207a2e371e53d7a1f5459e7b53e5eea53c95565e958a6eb7fcb212359  golang-tools-1.5.1.tar.gz
e21084dc07a74c7b6437ae22034b62e3a255692d32dba767c15efdb123d3159c03a02437a41350e512eaa2478a7afbd8b409317a779c56ee4939512d060d57fa  no-pic.patch
d59c977341b9ab15664b4b0c4f3df9e74ce48ffbd59594a7abb5a0907469f9d362c4e558606dd4b7cd102c165dd53027bae6aa1c48623c2105461dcad4cee14d  default-sc-getpw-r-size-max.patch"