Re: [gentoo-dev] new eclass: golang-build.eclass for building Go software

[William Hubbs]

All,

here is an updated version of this eclass. The following changes have
been made:

1. GOPATH is not put in the ebuild environment; it is passed to
the commands that need it.

2. By default, third party Go sources and packages are installed in
a system-wide Go workspace located in /usr/lib/go-gentoo.

3. A subslot dependency on dev-lang/go has been added to allow rebuilding
of packages that use this eclass when a user upgrades dev-lang/go by
using --with-bdeps=y.

Let me know what you think.

William


# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# @ECLASS: golang-build.eclass
# @MAINTAINER:
# William Hubbs <willi...@gentoo.org>
# @BLURB: Eclass for compiling go packages.
# @DESCRIPTION:
# This eclass provides default  src_compile, src_test and src_install
# functions for software written in the Go programming language.

case "${EAPI:-0}" in
        5)
                ;;
        *)
                die "${ECLASS}: Unsupported eapi (EAPI=${EAPI})"
                ;;
esac

EXPORT_FUNCTIONS src_compile src_install src_test

if [[ -z ${_GOLANG_BUILD} ]]; then

_GOLANG_BUILD=1

DEPEND=">=dev-lang/go-1.4.2:="
STRIP_MASK="*.a"

# @ECLASS-VARIABLE: EGO_PN_BUILD
# @REQUIRED
# @DESCRIPTION:
# This is the import path for the go package(s) to build. Please emerge
# dev-lang/go and read "go help importpath" for syntax.
#
# If it is not set, we try to set it to EGO_PN assuming that you used
# the golang-vcs eclass.
#
# Example:
# @CODE
# EGO_PN_BUILD=github.com/user/package
# @CODE

# @FUNCTION: _golang-build_setup
# @INTERNAL
# @DESCRIPTION:
# Make sure EGO_PN_BUILD has a value.
_golang-build_setup() {
        [ -z "${EGO_PN_BUILD}" ] &&
                [ -n "${EGO_PN}" ] &&
                EGO_PN_BUILD="${EGO_PN}"
        [ -z "${EGO_PN_BUILD}" ] &&
                die "${ECLASS}.eclass: EGO_PN_BUILD is not set"
        return 0
}

golang-build_src_compile() {
        debug-print-function ${FUNCNAME} "$@"

        _golang-build_setup
        set -- env GOPATH="${WORKDIR}/${P}:${EPREFIX}/usr/lib/go-gentoo" \
                go build -v -work -x "${EGO_PN_BUILD}"
        echo "$@"
        "$@" || die
}

golang-build_src_install() {
        debug-print-function ${FUNCNAME} "$@"

        _golang-build_setup
        set -- env GOPATH="${WORKDIR}/${P}:${EPREFIX}/usr/lib/go-gentoo" \
                go install -v -work -x "${EGO_PN_BUILD}"
        echo "$@"
        "$@" || die
        insinto /usr/lib/go-gentoo
        insopts -m0644 -p # preserve timestamps for bug 551486
        doins -r pkg src
}

golang-build_src_test() {
        debug-print-function ${FUNCNAME} "$@"

        _golang-build_setup
        set -- env GOPATH="${WORKDIR}/${P}:${EPREFIX}/usr/lib/go-gentoo" \
                go test -v -work -x "${EGO_PN_BUILD}"
        echo "$@"
        "$@" || die
}

fi

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