mirror of
https://github.com/flatcar/scripts.git
synced 2025-08-22 06:51:26 +02:00
dev-lang/go: implement more complete cross compilation support
There are a few quirks with Go to deal with when cross-compiling: - Since DEPEND cannot distinguish cross-architecture dependencies the current ebuild cannot keyword all architectures it supports. This could be resolved in the future with a special use flag or other clever trick to drop go-bootstrap from DEPEND for cross builds. - GOHOST* and CC variables are CBUILD values. - GO* and *_FOR_TARGET variables are CHOST values. - Go can always be used as a cross-compiler so handling the CHOST!=CTARGET case isn't strictly required. We could provide a pre-built copy of the std library for CTARGET's architecture but I'm not sure if that would be useful or not. For now the ebuild just doesn't allow that case. Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=558216 Gentoo-Commit: 0f4f3b8d200e15982e5e75f52f3c472d152cc4c9
This commit is contained in:
Michael Marineau
parent
e8cf09be54
commit
e83621034c
@ -1,9 +1,10 @@
|
||||
# Copyright 1999-2015 Gentoo Foundation
|
||||
# Distributed under the terms of the GNU General Public License v2
|
||||
# $Header: /var/cvsroot/gentoo-x86/dev-lang/go/go-9999.ebuild,v 1.30 2015/07/06 16:21:21 williamh Exp $
|
||||
# $Id$
|
||||
|
||||
EAPI=5
|
||||
|
||||
export CBUILD=${CBUILD:-${CHOST}}
|
||||
export CTARGET=${CTARGET:-${CHOST}}
|
||||
|
||||
inherit eutils toolchain-funcs
|
||||
@ -13,7 +14,8 @@ if [[ ${PV} = 9999 ]]; then
|
||||
inherit git-r3
|
||||
else
|
||||
SRC_URI="https://storage.googleapis.com/golang/go${PV}.src.tar.gz"
|
||||
# Upstream only supports go on amd64, arm and x86 architectures.
|
||||
# go-bootstrap-1.4 only supports go on amd64, arm and x86 architectures.
|
||||
# Allowing other bootstrap options would enable arm64 and ppc64 builds.
|
||||
KEYWORDS="-* ~amd64 ~arm ~x86 ~amd64-fbsd ~x86-fbsd ~x64-macos ~x86-macos"
|
||||
fi
|
||||
|
||||
@ -28,21 +30,80 @@ DEPEND=">=dev-lang/go-bootstrap-1.4.1"
|
||||
RDEPEND=""
|
||||
|
||||
# These test data objects have writable/executable stacks.
|
||||
QA_EXECSTACK="
|
||||
usr/lib/go/src/debug/elf/testdata/go-relocation-test-gcc482-aarch64.obj
|
||||
usr/lib/go/src/debug/elf/testdata/gcc-amd64-openbsd-debug-with-rela.obj"
|
||||
QA_EXECSTACK="usr/lib/go/src/debug/elf/testdata/*.obj"
|
||||
|
||||
# The tools in /usr/lib/go should not cause the multilib-strict check to fail.
|
||||
QA_MULTILIB_PATHS="usr/lib/go/pkg/tool/.*/.*"
|
||||
|
||||
# The go language uses *.a files which are _NOT_ libraries and should not be
|
||||
# stripped.
|
||||
STRIP_MASK="/usr/lib/go/pkg/linux*/*.a /usr/lib/go/pkg/freebsd*/*.a /usr/lib/go/pkg/darwin*/*.a"
|
||||
# stripped. The test data objects should also be left alone and unstripped.
|
||||
STRIP_MASK="/usr/lib/go/pkg/*.a
|
||||
/usr/lib/go/src/debug/elf/testdata/*
|
||||
/usr/lib/go/src/debug/dwarf/testdata/*
|
||||
/usr/lib/go/src/runtime/race/*.syso"
|
||||
|
||||
if [[ ${PV} != 9999 ]]; then
|
||||
S="${WORKDIR}"/go
|
||||
fi
|
||||
|
||||
go_arch()
|
||||
{
|
||||
# By chance most portage arch names match Go
|
||||
local portage_arch=$(tc-arch $@)
|
||||
case "${portage_arch}" in
|
||||
x86) echo 386;;
|
||||
*) echo "${portage_arch}";;
|
||||
esac
|
||||
}
|
||||
|
||||
go_arm()
|
||||
{
|
||||
case "${1:-${CHOST}}" in
|
||||
armv5) echo 5;;
|
||||
armv6) echo 6;;
|
||||
armv7) echo 7;;
|
||||
*)
|
||||
die "unknown GOARM for ${1:-${CHOST}}"
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
go_os()
|
||||
{
|
||||
case "${1:-${CHOST}}" in
|
||||
*-linux*) echo linux;;
|
||||
*-darwin*) echo darwin;;
|
||||
*-freebsd*) echo freebsd;;
|
||||
*-netbsd*) echo netbsd;;
|
||||
*-openbsd*) echo openbsd;;
|
||||
*-solaris*) echo solaris;;
|
||||
*-cygwin*|*-interix*|*-winnt*)
|
||||
echo windows
|
||||
;;
|
||||
*)
|
||||
die "unknown GOOS for ${1:-${CHOST}}"
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
go_tuple()
|
||||
{
|
||||
echo "$(go_os $@)_$(go_arch $@)"
|
||||
}
|
||||
|
||||
go_cross_compile()
|
||||
{
|
||||
[[ $(go_tuple ${CBUILD}) != $(go_tuple) ]]
|
||||
}
|
||||
|
||||
pkg_pretend()
|
||||
{
|
||||
# make.bash does not understand cross-compiling a cross-compiler
|
||||
if [[ $(go_tuple) != $(go_tuple ${CTARGET}) ]]; then
|
||||
die "CHOST CTARGET pair unsupported: CHOST=${CHOST} CTARGET=${CTARGET}"
|
||||
fi
|
||||
}
|
||||
|
||||
src_prepare()
|
||||
{
|
||||
if [[ ${PV} != 9999 ]]; then
|
||||
@ -58,11 +119,19 @@ src_compile()
|
||||
export GOROOT_FINAL="${EPREFIX}"/usr/lib/go
|
||||
export GOROOT="$(pwd)"
|
||||
export GOBIN="${GOROOT}/bin"
|
||||
if [[ $CTARGET = armv5* ]]
|
||||
then
|
||||
export GOARM=5
|
||||
|
||||
# Go's build script does not use BUILD/HOST/TARGET consistently. :(
|
||||
export GOHOSTARCH=$(go_arch ${CBUILD})
|
||||
export GOHOSTOS=$(go_os ${CBUILD})
|
||||
export CC=$(tc-getBUILD_CC)
|
||||
|
||||
export GOARCH=$(go_arch)
|
||||
export GOOS=$(go_os)
|
||||
export CC_FOR_TARGET=$(tc-getCC)
|
||||
export CXX_FOR_TARGET=$(tc-getCXX)
|
||||
if [[ ${ARCH} == arm ]]; then
|
||||
export GOARM=$(go_arm)
|
||||
fi
|
||||
tc-export CC
|
||||
|
||||
cd src
|
||||
./make.bash || die "build failed"
|
||||
@ -70,6 +139,8 @@ src_compile()
|
||||
|
||||
src_test()
|
||||
{
|
||||
go_cross_compile && return 0
|
||||
|
||||
cd src
|
||||
PATH="${GOBIN}:${PATH}" \
|
||||
./run.bash --no-rebuild --banner || die "tests failed"
|
||||
@ -77,17 +148,27 @@ src_test()
|
||||
|
||||
src_install()
|
||||
{
|
||||
dobin bin/*
|
||||
local bin_path="${GOBIN}"
|
||||
if go_cross_compile; then
|
||||
bin_path="${GOBIN}/$(go_tuple)"
|
||||
fi
|
||||
dobin "${bin_path}"/*
|
||||
dodoc AUTHORS CONTRIBUTORS PATENTS README.md
|
||||
|
||||
dodir /usr/lib/go
|
||||
dodir /usr/lib/go /usr/lib/go/pkg /usr/lib/go/pkg/tool
|
||||
insinto /usr/lib/go
|
||||
|
||||
# There is a known issue which requires the source tree to be installed [1].
|
||||
# Once this is fixed, we can consider using the doc use flag to control
|
||||
# installing the doc and src directories.
|
||||
# [1] https://golang.org/issue/2775
|
||||
doins -r doc lib pkg src
|
||||
doins -r doc lib src
|
||||
|
||||
# Selectively install pkg directory to exclude the bootstrap build
|
||||
insinto /usr/lib/go/pkg
|
||||
doins -r pkg/include "pkg/$(go_tuple)"
|
||||
insinto /usr/lib/go/pkg/tool
|
||||
doins -r "pkg/tool/$(go_tuple)"
|
||||
fperms -R +x /usr/lib/go/pkg/tool
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user