From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <gentoo-commits+bounces-1571841-garchives=archives.gentoo.org@lists.gentoo.org>
Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (2048 bits))
(No client certificate requested)
by finch.gentoo.org (Postfix) with ESMTPS id F17BD158099
for <garchives@archives.gentoo.org>; Mon, 20 Nov 2023 23:27:35 +0000 (UTC)
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
by pigeon.gentoo.org (Postfix) with SMTP id E3F8E2BC01D;
Mon, 20 Nov 2023 23:27:34 +0000 (UTC)
Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256)
(No client certificate requested)
by pigeon.gentoo.org (Postfix) with ESMTPS id C7D852BC01D
for <gentoo-commits@lists.gentoo.org>; Mon, 20 Nov 2023 23:27:34 +0000 (UTC)
Received: from oystercatcher.gentoo.org (oystercatcher.gentoo.org [148.251.78.52])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256)
(No client certificate requested)
by smtp.gentoo.org (Postfix) with ESMTPS id B941A335D4F
for <gentoo-commits@lists.gentoo.org>; Mon, 20 Nov 2023 23:27:33 +0000 (UTC)
Received: from localhost.localdomain (localhost [IPv6:::1])
by oystercatcher.gentoo.org (Postfix) with ESMTP id C41EBA64
for <gentoo-commits@lists.gentoo.org>; Mon, 20 Nov 2023 23:27:31 +0000 (UTC)
From: "James Le Cuirot" <chewi@gentoo.org>
To: gentoo-commits@lists.gentoo.org
Content-Transfer-Encoding: 8bit
Content-type: text/plain; charset=UTF-8
Reply-To: gentoo-dev@lists.gentoo.org, "James Le Cuirot" <chewi@gentoo.org>
Message-ID: <1700522722.878d04daaf34765e6224e58139a9c45921d7a0c3.chewi@gentoo>
Subject: [gentoo-commits] repo/gentoo:master commit in: eclass/
X-VCS-Repository: repo/gentoo
X-VCS-Files: eclass/go-env.eclass
X-VCS-Directories: eclass/
X-VCS-Committer: chewi
X-VCS-Committer-Name: James Le Cuirot
X-VCS-Revision: 878d04daaf34765e6224e58139a9c45921d7a0c3
X-VCS-Branch: master
Date: Mon, 20 Nov 2023 23:27:31 +0000 (UTC)
Precedence: bulk
List-Post: <mailto:gentoo-commits@lists.gentoo.org>
List-Help: <mailto:gentoo-commits+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-commits+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-commits+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-commits.gentoo.org>
X-BeenThere: gentoo-commits@lists.gentoo.org
X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply
X-Archives-Salt: 5b68d0be-9dc4-46e9-a768-ed7391843d6a
X-Archives-Hash: 10cb3e1c547baa9be05ee2d214e861d8
commit: 878d04daaf34765e6224e58139a9c45921d7a0c3
Author: Thilo Fromm <thilo.alexander <AT> gmail <DOT> com>
AuthorDate: Wed Nov 8 07:34:35 2023 +0000
Commit: James Le Cuirot <chewi <AT> gentoo <DOT> org>
CommitDate: Mon Nov 20 23:25:22 2023 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=878d04da
eclass/go-env.eclass: add helper to set compile env
This change adds a helper function to explicitly set CC, CXX, and
GOARCH, and carrying over CFLAGS, LDFLAGS and friends to CGO
equivalents, to provide a minimal sane compile environment for Go.
It enables Go builds to play nice with crossdev's wrappers for
emerge/ebuild etc. Previously, Go ebuilds emitted binaries for the host
architecture.
For example, when running on an x86_64 host:
emerge-aarch64-cross-linux-gnu foo
will now correctly emerge Go package "foo" for aarch64 instead of
x86_64.
The eclass provides a single helper function
go-env_set_compile_environment()
intended to be called by other Go eclasses in an early build stage.
Ebuilds may also explicitly call this function.
Signed-off-by: Thilo Fromm <thilo.alexander <AT> gmail.com>
Signed-off-by: James Le Cuirot <chewi <AT> gentoo.org>
eclass/go-env.eclass | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/eclass/go-env.eclass b/eclass/go-env.eclass
new file mode 100644
index 000000000000..ba4f6c3fbb59
--- /dev/null
+++ b/eclass/go-env.eclass
@@ -0,0 +1,48 @@
+# Copyright 2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: go-env.eclass
+# @MAINTAINER:
+# Flatcar Linux Maintainers <infra@flatcar-linux.org>
+# @AUTHOR:
+# Flatcar Linux Maintainers <infra@flatcar-linux.org>
+# @BLURB: Helper eclass for setting the Go compile environment. Required for cross-compiling.
+# @DESCRIPTION:
+# This eclass includes a helper function for setting the compile environment for Go ebuilds.
+# Intended to be called by other Go eclasses in an early build stage, e.g. src_unpack.
+
+if [[ -z ${_GO_ENV_ECLASS} ]]; then
+_GO_ENV_ECLASS=1
+
+inherit toolchain-funcs
+
+# @FUNCTION: go-env_set_compile_environment
+# @DESCRIPTION:
+# Set up basic compile environment: CC, CXX, and GOARCH.
+# Also carry over CFLAGS, LDFLAGS and friends.
+# Required for cross-compiling with crossdev.
+# If not set, host defaults will be used and the resulting binaries are host arch.
+# (e.g. "emerge-aarch64-cross-linux-gnu foo" run on x86_64 will emerge "foo" for x86_64
+# instead of aarch64)
+go-env_set_compile_environment() {
+ local arch="$(tc-arch)"
+ case "${arch}" in
+ x86) GOARCH="386" ;;
+ x64-*) GOARCH="amd64" ;;
+ ppc64) if [[ "$(tc-endian)" == "big" ]] ; then
+ GOARCH="ppc64"
+ else
+ GOARCH="ppc64le"
+ fi ;;
+ *) GOARCH="${arch}" ;;
+ esac
+
+ tc-export CC CXX
+ export GOARCH
+ export CGO_CFLAGS="${CGO_CFLAGS:-$CFLAGS}"
+ export CGO_CPPFLAGS="${CGO_CPPFLAGS:-$CPPFLAGS}"
+ export CGO_CXXFLAGS="${CGO_CXXFLAGS:-$CXXFLAGS}"
+ export CGO_LDFLAGS="${CGO_LDFLAGS:-$LDFLAGS}"
+}
+
+fi