# Template file for 'go'
pkgname=go
version=1.16.5
revision=1
create_wrksrc=yes
build_wrksrc=go
hostmakedepends="go1.12-bootstrap"
short_desc="Go Programming Language"
maintainer="Michael Aldridge <maldridge@voidlinux.org>"
license="BSD-3-Clause"
homepage="http://golang.org/"
changelog="https://golang.org/doc/devel/release.html"
distfiles="https://golang.org/dl/go${version}.src.tar.gz"
checksum=7bfa7e5908c7cc9e75da5ddf3066d7cbcf3fd9fa51945851325eebc17f50ba80
nostrip=yes
noverifyrdeps=yes

case "${XBPS_TARGET_MACHINE}" in
	aarch64*) _goarch=arm64 ;;
	arm*) _goarch=arm ;;
	i686*) _goarch=386 ;;
	x86_64*) _goarch=amd64 ;;
	ppc64le*) _goarch=ppc64le ;;
	mips*) _goarch=mips ;;
	*) broken="Unsupported architecture ${XBPS_TARGET_MACHINE}" ;;
esac

if [ "$CROSS_BUILD" ]; then
	if [ "${XBPS_MACHINE%%-musl}" = "${XBPS_TARGET_MACHINE%%-musl}" ]; then
		broken="Cross-compiling to different libc is not supported"
	fi
fi

do_build() {
	unset GCC CC CXX LD CFLAGS
	# FIXME: work around leaking go build-style vars when built as a
	# dependency
	unset CGO_CXXFLAGS CGO_CFLAGS CGO_ENABLED

	export GOROOT_BOOTSTRAP="/usr/lib/go1.12"
	export GOROOT=$PWD
	export GOROOT_FINAL="/usr/lib/go"
	export GOARCH=${_goarch}

	cd "src"

	bash make.bash --no-clean -v
}

do_install() {
	local bindir

	if [ "$CROSS_BUILD" ]; then
		bindir=bin/linux_${_goarch}
	else
		bindir=bin
	fi

	vmkdir usr/bin
	vmkdir usr/lib/go
	vmkdir usr/share/go
	cp -d --preserve=all ${bindir}/* ${DESTDIR}/usr/bin || true
	cp -a pkg src lib ${DESTDIR}/usr/lib/go
	cp -r doc misc -t ${DESTDIR}/usr/share/go
	ln -s /usr/share/go/doc ${DESTDIR}/usr/lib/go/doc

	# This is to make go get code.google.com/p/go-tour/gotour and
	# then running the gotour executable work out of the box.
	#
	# Also, /usr/bin is the place for system-wide executables,
	# not /usr/lib/go/bin. Users should use different paths by
	# setting the appropriate environment variables.
	#
	ln -sf /usr/bin ${DESTDIR}/usr/lib/go/bin

	# <dominikh> sigh. well, someone fix the template and add
	# a symlink, usr/lib/go/misc -> /usr/share/go/misc
	ln -sfr ${DESTDIR}/usr/share/go/misc ${DESTDIR}/usr/lib/go/misc

	rm -f ${DESTDIR}/usr/share/go/doc/articles/wiki/get.bin
	rm -f ${DESTDIR}/usr/lib/go/pkg/tool/*/api
	rm -rf ${DESTDIR}/usr/lib/go/pkg/bootstrap
	rm -rf ${DESTDIR}/usr/lib/go/pkg/obj

	vlicense LICENSE
}