Gentoo Archives: gentoo-dev

From: Alec Warner <antarus@g.o>
To: Gentoo Dev <gentoo-dev@l.g.o>
Cc: William Hubbs <williamh@g.o>
Subject: Re: [gentoo-dev] [PATCH 1/3] go-module.eclass: introduce new eclass to handle go modules
Date: Wed, 11 Sep 2019 23:31:18
Message-Id: CAAr7Pr_iHyNd42Os7PWEc7fJanOGE-6YM+ZUQrzvMUVpMv=REw@mail.gmail.com
In Reply to: [gentoo-dev] [PATCH 1/3] go-module.eclass: introduce new eclass to handle go modules by William Hubbs
On Wed, Sep 11, 2019 at 10:28 AM William Hubbs <williamh@g.o> wrote:

> Copyright: Sony Interactive Entertainment Inc. > Signed-off-by: William Hubbs <williamh@g.o> > --- > eclass/go-module.eclass | 76 +++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 76 insertions(+) > create mode 100644 eclass/go-module.eclass > > diff --git a/eclass/go-module.eclass b/eclass/go-module.eclass > new file mode 100644 > index 00000000000..7009fcd3beb > --- /dev/null > +++ b/eclass/go-module.eclass > @@ -0,0 +1,76 @@ > +# Copyright 1999-2015 Gentoo Foundation > +# Distributed under the terms of the GNU General Public License v2 > + > +# @ECLASS: go-module.eclass > +# @MAINTAINER: > +# William Hubbs <williamh@g.o> > +# @SUPPORTED_EAPIS: 7 > +# @BLURB: basic eclass for building software written in the go > +# programming language that uses go modules. > +# @DESCRIPTION: > +# This eclass provides a convenience src_prepare() phase and some basic > +# settings needed for all software written in the go programming > +# language that uses go modules. > +# > +# You will know the software you are packaging uses modules because > +# it will have files named go.sum and go.mod in its top-level source > +# directory. If it does not have these files, use the golang-* eclasses. > +# > +# If the software you are packaging uses modules, the next question is > +# whether it has a directory named "vendor" at the top-level of the > source tree. > +# > +# If it doesn't, you need to create a tarball of what would be in the > +# vendor directory and mirror it locally. This is done with the > +# following commands if upstream is using a git repository: > +# > +# @CODE: > +# > +# $ cd /my/clone/of/upstream > +# $ git checkout <release> > +# $ go mod vendor > +# $ tar cvf project-version-vendor.tar.gz vendor > +# > +# @CODE: > +# > +# Other than this, all you need to do is inherit this eclass then > +# make sure the exported src_prepare function is run. > + > +case ${EAPI:-0} in > + 7) ;; > + *) die "${ECLASS} API in EAPI ${EAPI} not yet established." > +esac > + > +if [[ -z ${_GO_MODULE} ]]; then > + > +_GO_MODULE=1 > + > +BDEPEND=">=dev-lang/go-1.12" > + > +# Do not download dependencies from the internet > +# make build output verbose by default > +export GOFLAGS="-mod=vendor -v -x" > + > +# Do not complain about CFLAGS etc since go projects do not use them. > +QA_FLAGS_IGNORED='.*' > + > +# Upstream does not support stripping go packages > +RESTRICT="strip" >
https://golang.org/cmd/link/ implies you can pass -s -w to the compiler to reduce binary size. Does that not work in portage by default, or does upstream just consider that bad practice? -A
> + > +EXPORT_FUNCTIONS src_prepare > + > +# @FUNCTION: go-module_src_prepare > +# @DESCRIPTION: > +# Run a default src_prepare then move our provided vendor directory to > +# the appropriate spot if upstream doesn't provide a vendor directory. > +go-module_src_prepare() { > + default > + # Use the upstream provided vendor directory if it exists. > + [[ -d vendor ]] && return > + # If we are not providing a mirror of a vendor directory we created > + # manually, return since there may be nothing to vendor. > + [[ ! -d ../vendor ]] && return > + # At this point, we know we are providing a vendor mirror. > + mv ../vendor . || die "Unable to move ../vendor directory" > +} > + > +fi > -- > 2.21.0 > > >

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