From 422d60ce9fc02f4ee602b5bf30195d57c1982c6a Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Wed, 31 Dec 2014 15:26:59 -0800
Subject: [PATCH 1/2] eclass: add basic eclass for building Go binaries

This isn't particularly interesting right now but will be more important
once it grows support for cgo and cross-compiling, things which our
standard go build scripts don't handle.
---
 .../coreos-overlay/eclass/coreos-go.eclass    | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 sdk_container/src/third_party/coreos-overlay/eclass/coreos-go.eclass

diff --git a/sdk_container/src/third_party/coreos-overlay/eclass/coreos-go.eclass b/sdk_container/src/third_party/coreos-overlay/eclass/coreos-go.eclass
new file mode 100644
index 0000000000..aee8c64749
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/eclass/coreos-go.eclass
@@ -0,0 +1,61 @@
+# Copyright 2014 CoreOS, Inc.
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+# @ECLASS: coreos-go.eclass
+# @BLURB: utility functions for building Go binaries
+
+# @ECLASS-VARIABLE: COREOS_GO_PACKAGE
+# @DESCRIPTION:
+# Name of the Go package unpacked to ${S}, this is required.
+
+[[ ${EAPI} != "5" ]] && die "Only EAPI=5 is supported"
+
+inherit multiprocessing
+
+DEPEND="dev-lang/go"
+
+# @FUNCTION: go_build
+# @USAGE: <package-name> [<binary-name>]
+go_build() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	[[ $# -eq 0 || $# -gt 2 ]] && die "go_install: incorrect # of arguments"
+	local package_name="$1"
+	local binary_name="${package_name##*/}"
+
+	# TODO: handle cgo, cross-compiling, etc etc...
+	CGO_ENABLED=0 go build -x -p "$(makeopts_jobs)" \
+		-o "${GOPATH}/bin/${binary_name}" "${package_name}" \
+		|| die "go build failed"
+}
+
+coreos-go_src_prepare() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	export GOPATH="${WORKDIR}/gopath"
+	export GOBIN="${GOPATH}/bin"
+	mkdir -p "${GOBIN}" || die
+
+	if [[ -z "${COREOS_GO_PACKAGE}" ]]; then
+		die "COREOS_GO_PACKAGE must be defined by the ebuild"
+	fi
+
+	local package_path="${GOPATH}/src/${COREOS_GO_PACKAGE}"
+	mkdir -p "${package_path%/*}" || die
+	ln -sT "${S}" "${package_path}" || die
+}
+
+coreos-go_src_compile() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	go_build "${COREOS_GO_PACKAGE}"
+}
+
+coreos-go_src_install() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	dobin "${GOBIN}"/*
+}
+
+EXPORT_FUNCTIONS src_prepare src_compile src_install

From 1d86304c053509d803e06e4ea70e31a89d12f294 Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Wed, 31 Dec 2014 15:29:42 -0800
Subject: [PATCH 2/2] coreos-devel/mantle: new SDK utility package

Just the beginning for now, will eventually grow support for testing
CoreOS builds and provide better integration with remote services like
Google Cloud/Compute, Amazon, OpenStack clouds, etc. than we can achieve
with our current collection of bash scripts.
---
 .../coreos-devel/mantle/mantle-0.0.1.ebuild   |  1 +
 .../coreos-devel/mantle/mantle-9999.ebuild    | 25 +++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 120000 sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.0.1.ebuild
 create mode 100644 sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild

diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.0.1.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.0.1.ebuild
new file mode 120000
index 0000000000..3969bcbf54
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.0.1.ebuild
@@ -0,0 +1 @@
+mantle-9999.ebuild
\ No newline at end of file
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild
new file mode 100644
index 0000000000..344a9b08d2
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild
@@ -0,0 +1,25 @@
+# Copyright 2014 CoreOS, Inc.
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+CROS_WORKON_PROJECT="coreos/mantle"
+CROS_WORKON_REPO="git://github.com"
+COREOS_GO_PACKAGE="github.com/coreos/mantle"
+
+if [[ "${PV}" == 9999 ]]; then
+	KEYWORDS="~amd64"
+else
+	CROS_WORKON_COMMIT="14c53ce56771da9bc9a3f80a2f05a2aa65780e60"
+	KEYWORDS="amd64"
+fi
+
+inherit coreos-go cros-workon
+
+DESCRIPTION="Mantle: Gluing CoreOS together"
+HOMEPAGE="https://github.com/coreos/mantle"
+LICENSE="Apache-2"
+SLOT="0"
+
+src_compile() {
+	go_build "${COREOS_GO_PACKAGE}"/plume
+}