gentoo resync : 18.05.2019

3 files changed, 496 insertions, 0 deletions

diff --git a/dev-lang/go/Manifest b/dev-lang/go/Manifest
index bc9c31dbb05d..0451862e53bc 100644
--- a/dev-lang/go/Manifest
+++ b/dev-lang/go/Manifest
@@ -9,6 +9,7 @@ DIST go-linux-ppc64-bootstrap-1.8.tbz 52315782 BLAKE2B 6be0a48e8bc4e5fed4d34f8aa
 DIST go-linux-ppc64le-bootstrap-1.8.tbz 52211575 BLAKE2B 7a28ec5a381369c4e9415c8360e904c2545380513afd328077c584e8af0bf6bd818aa03e5a58c350cbb98facc1c9dccb02b06adcb27233875497cf5d33265912 SHA512 6931d999dd0ee1ff44c4cec48acb27af061f57f87aa74802dcebab78553b46bc8ac732f07fe91e5074dbdd32c55b707994875934bfb12bb4276d71eb1d06c4ba
 DIST go-linux-s390x-bootstrap-1.8.tbz 57124869 BLAKE2B 920a176b8f4fc3a816e724324bbb30a383d599e31a0d2093d24797dbcd0e799a662a3589dbb87d2f5dd16df07c4cf8f1e444e87b540ec732746bb025dc9271f8 SHA512 d429cae870d66217ab2e07c74209d3031d97baa4f899b4d70ae6283a1a5b1434b037904c4cfca0b2bc798d5ba0b358c3739e000eccbc74809baf564c5686df5a
 DIST go-solaris-amd64-bootstrap-1.8.tbz 54926326 BLAKE2B 0a45312f090d81ebf46fe5950cb65c059e2801394231e715e94145d1f918eb59b10472b2385e57ebd5cfb9eca0ad7290fb118436486b665520bb540970f971ab SHA512 52b849e5b9a940e10de7ba3df0ebdf6e1c5d631de9581d936c9edf8f38e6bb3314acbc2b2d5202b0528fde2a359d52bc0c6f39acf9b1b614725e4b4a947ed10d
+DIST go1.11.10.src.tar.gz 21113259 BLAKE2B 2dc704ea092fb4f4bb6c379ecb5104eb9dc5657750fb046810f210f38191d494c926e7a3661f67ea09c3d4090676485ba346daaa6dfe9eebbf3d69acbacea3b8 SHA512 8fab3b96d1c47b8f75b135da9d1a104c485098f6f42041b69336216a57cfd49c0785c8cfa7b016020ded5f0aadd279d7a76feeca33038321a4930139aee28cc8
 DIST go1.11.6.src.tar.gz 21113406 BLAKE2B e7372e9bf6190295176c66a328b3e31f9201776f16f1165136e24bdaf5c514d7895dd5880514fa054ee958ed5ff96814de9a555e47b3f6dddd388d1e57c0d05f SHA512 bc29df69a08a4e9e703de72b5eda5f2d63b78f18f3e7a1173eae5c6dd767f29f1b865a2fc3f692e15277df2d45e74ee17875b275eb3fc50aac2b88082e618bf5
 DIST go1.11.7.src.tar.gz 21113223 BLAKE2B e58a947a43e8dbabbe6d4dc1384239b01160e4d9cc88ed866c8d6e5a0ef66dd89203b9fb95c14c5fcc50ad47f75b17440cf1df34cb793a435d7744e630845307 SHA512 26bc2a3ab51ebe1179cd83897dae6ca17f30126189bf2c0b60060a25f3f22e72bcda383055825a9151948f074a103a177ab5550f5c2d088448bdf5455448061e
 DIST go1.11.8.src.tar.gz 21113433 BLAKE2B 272ef36664a180640f14afba18d2f715d5a335134b33cea449d14fd3b568c2322bbbac7aab254987fbd7dcf3d486dc8b1f62f14577ae2e57b21de1720d0f29a7 SHA512 00b57b0ebbbf53f4de718bf40e5dfdaf57cafa9932917d22e9723b5a33a62d335013ab49753d98f8fe30c71daca95c7addd921825fe0c3885942b342773050cc
@@ -17,6 +18,8 @@ DIST go1.12.1.src.tar.gz 21963082 BLAKE2B fd9c0ca19e6bd285c52034a88df1a58f96b957
 DIST go1.12.2.src.tar.gz 21965624 BLAKE2B 9f4fbe62b37ccaf62517b2e5df3e1ada0155b7cb79067c2a74100df6d96ba89b0e372b5f1b1037b0cf98ea9f52623de00055793d011e5e39e92773a0cd87e41d SHA512 f7b8ffe8d3de7b456ba595deece5b092db8645e95d901826c33428af0151731921437222dcb5d52c9d937da4ebeb3192c30aa17052aa88c9e425e96cac2d79bb
 DIST go1.12.3.src.tar.gz 21965718 BLAKE2B 226b1028eb47cee8ccc0b72130a098a65211cf0e54030fe626b6b9cf1c16993e0a9677a443c07abd997e0f2bfbc1711c703a40869ae1ecbb8b8dfa0fbf31c0b2 SHA512 bd33e958f2e8550da14afc0576928d00d2b8ecac569ddcf3551e44a342ce78ad3934e36109cbe6c15d31c55448ccc092f6e1fbf82685d6702402ab67106a1424
 DIST go1.12.4.src.tar.gz 21965966 BLAKE2B 6a6d2712769d9195795ca14a7c33a4e025c572317c0a9118f4f610c56f907e0eec99d2ecca37cc6e2005a42b842080d93895d4dfed206f23db32f3b848c9c57f SHA512 45ced5fc23a2786a652dbe66de7bbc039efaba29d884d797d6d0a6eaffb61dfb897905f0733ce74704f8760b1fdedb9963e26c1d9d8dee4a4676e74da5df8792
+DIST go1.12.5.src.tar.gz 21971348 BLAKE2B 7de8db4a6c4cd9e1883fbf28357fe99ad9f43f3e015b2063347b1961df128760b720c0dd5549997c7080e6cf0036406430419d4bf033323f26017d3629ad6067 SHA512 ce64105ff71615f9d235cc7c8656b6409fc40cc90d15a28d355fadd9072d2eab842af379dd8bba0f1181715753143e4a07491e0f9e5f8df806327d7c95a34fae
+EBUILD go-1.11.10.ebuild 6451 BLAKE2B de8659b981b3ae812cdcbd4816f4efa33ca8f29b9462375e03817d97c9415bff805568321b900e891c6f73576c220e55bc5ea6fb4ff47f1057c4ba6383d0707f SHA512 5543bb226fcb9958c02d67d145a3bbcb285e471eed0967db3b75187b9f9ad3a5d5e2ebd168580d014d7962aa1c92da0f447029748683feb46c9744e3239da535
 EBUILD go-1.11.6.ebuild 5963 BLAKE2B 11728beb9ff7ab042631ff558e14e3214b62a3eef6f4f7fd6671877904c8e58046ed9e6be6b91d486002e720a9e175ca7339aac599a41f05dd3d587ed69da179 SHA512 6f7dff5a3ed05a56ecb88121cc94d350b8e9cf8535727e83dac06183dfe8242b1a6bb946491e3ee01232aeb942bd65caac95d2920dd11ba09653a04df15c0a23
 EBUILD go-1.11.7.ebuild 5966 BLAKE2B 3c8cdf22159162824418120e5807e703918d19b4791fdf08b9b7800978b251aecd8da23517149ce88e73cbc23ffed1141afcd10de690eba9b24e52e4302c8505 SHA512 f13b7ae8102a1bf9a7dca556a3405ee1a9b314d36953718cf110f14e3060dadd8b9703096b56f42c98bae7dc18fabfc22f0e128deec8a43af02c4114026d440a
 EBUILD go-1.11.8.ebuild 5966 BLAKE2B 3c8cdf22159162824418120e5807e703918d19b4791fdf08b9b7800978b251aecd8da23517149ce88e73cbc23ffed1141afcd10de690eba9b24e52e4302c8505 SHA512 f13b7ae8102a1bf9a7dca556a3405ee1a9b314d36953718cf110f14e3060dadd8b9703096b56f42c98bae7dc18fabfc22f0e128deec8a43af02c4114026d440a
@@ -25,5 +28,6 @@ EBUILD go-1.12.1.ebuild 5963 BLAKE2B 11728beb9ff7ab042631ff558e14e3214b62a3eef6f
 EBUILD go-1.12.2.ebuild 5966 BLAKE2B 3c8cdf22159162824418120e5807e703918d19b4791fdf08b9b7800978b251aecd8da23517149ce88e73cbc23ffed1141afcd10de690eba9b24e52e4302c8505 SHA512 f13b7ae8102a1bf9a7dca556a3405ee1a9b314d36953718cf110f14e3060dadd8b9703096b56f42c98bae7dc18fabfc22f0e128deec8a43af02c4114026d440a
 EBUILD go-1.12.3.ebuild 5966 BLAKE2B 3c8cdf22159162824418120e5807e703918d19b4791fdf08b9b7800978b251aecd8da23517149ce88e73cbc23ffed1141afcd10de690eba9b24e52e4302c8505 SHA512 f13b7ae8102a1bf9a7dca556a3405ee1a9b314d36953718cf110f14e3060dadd8b9703096b56f42c98bae7dc18fabfc22f0e128deec8a43af02c4114026d440a
 EBUILD go-1.12.4.ebuild 6449 BLAKE2B cf4db759cb9cd1f825344f2255c813045bcc25e15155d64c7765891ed6f674ebe707b4c25301a96f3c1f4c06bdde93ff7e0ed9a9aec384dc8e1fccbc8c0a2b8e SHA512 0cc8cdd9ec1acc54a40b6bb3382c7f7f900790378ba34d073de54d6c4e59126fa21abff090469a5ff7db0921376a2de76c8ce53588c6f89e64a0cb48fd3237e3
+EBUILD go-1.12.5.ebuild 6451 BLAKE2B de8659b981b3ae812cdcbd4816f4efa33ca8f29b9462375e03817d97c9415bff805568321b900e891c6f73576c220e55bc5ea6fb4ff47f1057c4ba6383d0707f SHA512 5543bb226fcb9958c02d67d145a3bbcb285e471eed0967db3b75187b9f9ad3a5d5e2ebd168580d014d7962aa1c92da0f447029748683feb46c9744e3239da535
 EBUILD go-9999.ebuild 6089 BLAKE2B 38d7288bbc5cfdf11a6648a0386e600a67564424c782d736fbe4880a13ffd5bfb5eed075a5f6355d0dfb338d4429745b5250af56fab64c9ad9f25dde0f4a87e4 SHA512 8b31e38038d3315f3aea7d0d364f661de247f434dc80abb1feebe3e3418b03c47fbf565384417a4316239991cdb2059c4fe542e4d4c43eb4dd251f53e4e81e6f
 MISC metadata.xml 663 BLAKE2B fc92966e1b4a155b4d442842988d0404c0148b029d187ab7294d49dabad771296d63ca3184128ac27cea4e74e7d6cfc8852084ca8f1d15a1d0755586a0bf68de SHA512 f67b7e312cfb2a896552ae73e835d53ffbb0a7c71c30f0a7cb44c65e2753055e185e7a5c48e2cfff33a42609629cc3c32ee56a9d8f61d8429798c1e8424e36bf
diff --git a/dev-lang/go/go-1.11.10.ebuild b/dev-lang/go/go-1.11.10.ebuild
new file mode 100644
index 000000000000..3797d6e013de
--- /dev/null
+++ b/dev-lang/go/go-1.11.10.ebuild
@@ -0,0 +1,246 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+
+MY_PV=${PV/_/}
+
+inherit toolchain-funcs
+
+BOOTSTRAP_VERSION="bootstrap-1.8"
+BOOTSTRAP_DIST="https://dev.gentoo.org/~williamh/dist"
+BOOTSTRAP_URI="
+	${BOOTSTRAP_DIST}/go-linux-amd64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-arm-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-arm64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-ppc64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-ppc64le-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-s390x-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-386-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-freebsd-amd64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-freebsd-386-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-darwin-amd64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-solaris-amd64-${BOOTSTRAP_VERSION}.tbz
+"
+
+case ${PV}  in
+*9999*)
+	EGIT_REPO_URI="https://github.com/golang/go.git"
+	inherit git-r3
+	;;
+*)
+	SRC_URI="https://storage.googleapis.com/golang/go${MY_PV}.src.tar.gz "
+	S="${WORKDIR}"/go
+	case ${PV} in
+	*_beta*|*_rc*) ;;
+	*)
+		KEYWORDS="-* ~amd64 ~arm ~arm64 ~ppc64 ~s390 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x64-macos ~x64-solaris"
+		# The upstream tests fail under portage but pass if the build is
+		# run according to their documentation [1].
+		# I am restricting the tests on released versions until this is
+		# solved.
+		# [1] https://golang.org/issues/18442
+		RESTRICT="test"
+		;;
+	esac
+esac
+
+# If gccgo or a previously installed version of dev-lang/go is not being
+# used to build Go, there is no way to know the architecture or operating system
+# of the build machine, so we need to download all of our bootstrap
+# archives to allow this ebuild to work under crossdev.
+#
+# https://bugs.gentoo.org/671394
+SRC_URI+="!gccgo? ( !system-bootstrap? ( ${BOOTSTRAP_URI} ) )"
+
+DESCRIPTION="A concurrent garbage collected and typesafe programming language"
+HOMEPAGE="https://golang.org"
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+IUSE="gccgo system-bootstrap"
+
+BDEPEND="gccgo? ( >=sys-devel/gcc-5[go] )"
+RDEPEND="!<dev-go/go-tools-0_pre20150902"
+
+# These test data objects have writable/executable stacks.
+QA_EXECSTACK="
+	usr/lib/go/src/debug/elf/testdata/*.obj
+	usr/lib/go/src/*.gox
+	"
+
+# Do not complain about CFLAGS, etc, since Go doesn't use them.
+QA_FLAGS_IGNORED='.*'
+
+REQUIRES_EXCLUDE="/usr/lib/go/src/debug/elf/testdata/*"
+
+# The tools in /usr/lib/go should not cause the multilib-strict check to fail.
+QA_MULTILIB_PATHS="usr/lib/go/pkg/tool/.*/.*"
+
+# Do not strip this package. Stripping is unsupported upstream and may
+# fail.
+RESTRICT+=" strip"
+
+DOCS=(
+AUTHORS
+CONTRIBUTING.md
+CONTRIBUTORS
+PATENTS
+README.md
+)
+
+go_arch()
+{
+	# By chance most portage arch names match Go
+	local portage_arch=$(tc-arch $@)
+	case "${portage_arch}" in
+		x86)	echo 386;;
+		x64-*)	echo amd64;;
+		ppc64) [[ $(tc-endian $@) = big ]] && echo ppc64 || echo ppc64le ;;
+		s390) echo s390x ;;
+		*)		echo "${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
+	[[ ${MERGE_TYPE} != binary ]] &&
+		use system-bootstrap && ! has_version "dev-lang/go" &&
+		die "dev-lang/go must be installed to use the system-bootstrap use flag"
+}
+
+src_unpack()
+{
+	if [[ ${PV} = 9999 ]]; then
+		git-r3_src_unpack
+	else
+		unpack "go${MY_PV}.src.tar.gz"
+	fi
+	use gccgo || use system-bootstrap ||
+		unpack "go-$(go_os ${CBUILD})-$(go_arch ${CBUILD})-${BOOTSTRAP_VERSION}.tbz"
+}
+
+src_compile()
+{
+	export GOROOT_BOOTSTRAP="${WORKDIR}"/go-$(go_os ${CBUILD})-$(go_arch ${CBUILD})-bootstrap
+	if use gccgo; then
+		mkdir -p "${GOROOT_BOOTSTRAP}/bin" || die
+		local go_binary=$(gcc-config --get-bin-path)/go-$(gcc-major-version)
+		[[ -x ${go_binary} ]] || go_binary=$(
+			find "${EPREFIX}"/usr/${CHOST}/gcc-bin/*/go-$(gcc-major-version) |
+				sort -V | tail -n1)
+		[[ -x ${go_binary} ]] ||
+			die "go-$(gcc-major-version): command not found"
+		ln -s "${go_binary}" "${GOROOT_BOOTSTRAP}/bin/go" || die
+	elif use system-bootstrap; then
+		export GOROOT_BOOTSTRAP="${EPREFIX}"/usr/lib/go
+	fi
+	export GOROOT_FINAL="${EPREFIX}"/usr/lib/go
+	export GOROOT="$(pwd)"
+	export GOBIN="${GOROOT}/bin"
+
+	# 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
+
+	cd src
+	./make.bash || die "build failed"
+}
+
+src_test()
+{
+	go_cross_compile && return 0
+
+	cd src
+	PATH="${GOBIN}:${PATH}" \
+	./run.bash -no-rebuild || die "tests failed"
+}
+
+src_install()
+{
+	local bin_path f x
+
+	dodir /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
+	#
+	# deliberately use cp to retain permissions
+	cp -R api bin doc lib pkg misc src test "${ED}"/usr/lib/go
+	if go_cross_compile; then
+		bin_path="bin/$(go_tuple)"
+	else
+		bin_path=bin
+	fi
+	for x in ${bin_path}/*; do
+		f=${x##*/}
+		dosym ../lib/go/${bin_path}/${f} /usr/bin/${f}
+	done
+	einstalldocs
+
+	if [[ ${CHOST} == *-darwin* ]] ; then
+		# fix install_name for test object (binutils_test) on Darwin, it
+		# is never used in real circumstances
+		local libmac64="${EPREFIX}"/usr/lib/go/src/cmd/vendor/github.com/
+		      libmac64+=google/pprof/internal/binutils/testdata/lib_mac_64
+		install_name_tool -id "${libmac64}" "${D}${libmac64}"
+	fi
+}
diff --git a/dev-lang/go/go-1.12.5.ebuild b/dev-lang/go/go-1.12.5.ebuild
new file mode 100644
index 000000000000..3797d6e013de
--- /dev/null
+++ b/dev-lang/go/go-1.12.5.ebuild
@@ -0,0 +1,246 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+
+MY_PV=${PV/_/}
+
+inherit toolchain-funcs
+
+BOOTSTRAP_VERSION="bootstrap-1.8"
+BOOTSTRAP_DIST="https://dev.gentoo.org/~williamh/dist"
+BOOTSTRAP_URI="
+	${BOOTSTRAP_DIST}/go-linux-amd64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-arm-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-arm64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-ppc64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-ppc64le-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-s390x-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-linux-386-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-freebsd-amd64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-freebsd-386-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-darwin-amd64-${BOOTSTRAP_VERSION}.tbz
+	${BOOTSTRAP_DIST}/go-solaris-amd64-${BOOTSTRAP_VERSION}.tbz
+"
+
+case ${PV}  in
+*9999*)
+	EGIT_REPO_URI="https://github.com/golang/go.git"
+	inherit git-r3
+	;;
+*)
+	SRC_URI="https://storage.googleapis.com/golang/go${MY_PV}.src.tar.gz "
+	S="${WORKDIR}"/go
+	case ${PV} in
+	*_beta*|*_rc*) ;;
+	*)
+		KEYWORDS="-* ~amd64 ~arm ~arm64 ~ppc64 ~s390 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x64-macos ~x64-solaris"
+		# The upstream tests fail under portage but pass if the build is
+		# run according to their documentation [1].
+		# I am restricting the tests on released versions until this is
+		# solved.
+		# [1] https://golang.org/issues/18442
+		RESTRICT="test"
+		;;
+	esac
+esac
+
+# If gccgo or a previously installed version of dev-lang/go is not being
+# used to build Go, there is no way to know the architecture or operating system
+# of the build machine, so we need to download all of our bootstrap
+# archives to allow this ebuild to work under crossdev.
+#
+# https://bugs.gentoo.org/671394
+SRC_URI+="!gccgo? ( !system-bootstrap? ( ${BOOTSTRAP_URI} ) )"
+
+DESCRIPTION="A concurrent garbage collected and typesafe programming language"
+HOMEPAGE="https://golang.org"
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+IUSE="gccgo system-bootstrap"
+
+BDEPEND="gccgo? ( >=sys-devel/gcc-5[go] )"
+RDEPEND="!<dev-go/go-tools-0_pre20150902"
+
+# These test data objects have writable/executable stacks.
+QA_EXECSTACK="
+	usr/lib/go/src/debug/elf/testdata/*.obj
+	usr/lib/go/src/*.gox
+	"
+
+# Do not complain about CFLAGS, etc, since Go doesn't use them.
+QA_FLAGS_IGNORED='.*'
+
+REQUIRES_EXCLUDE="/usr/lib/go/src/debug/elf/testdata/*"
+
+# The tools in /usr/lib/go should not cause the multilib-strict check to fail.
+QA_MULTILIB_PATHS="usr/lib/go/pkg/tool/.*/.*"
+
+# Do not strip this package. Stripping is unsupported upstream and may
+# fail.
+RESTRICT+=" strip"
+
+DOCS=(
+AUTHORS
+CONTRIBUTING.md
+CONTRIBUTORS
+PATENTS
+README.md
+)
+
+go_arch()
+{
+	# By chance most portage arch names match Go
+	local portage_arch=$(tc-arch $@)
+	case "${portage_arch}" in
+		x86)	echo 386;;
+		x64-*)	echo amd64;;
+		ppc64) [[ $(tc-endian $@) = big ]] && echo ppc64 || echo ppc64le ;;
+		s390) echo s390x ;;
+		*)		echo "${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
+	[[ ${MERGE_TYPE} != binary ]] &&
+		use system-bootstrap && ! has_version "dev-lang/go" &&
+		die "dev-lang/go must be installed to use the system-bootstrap use flag"
+}
+
+src_unpack()
+{
+	if [[ ${PV} = 9999 ]]; then
+		git-r3_src_unpack
+	else
+		unpack "go${MY_PV}.src.tar.gz"
+	fi
+	use gccgo || use system-bootstrap ||
+		unpack "go-$(go_os ${CBUILD})-$(go_arch ${CBUILD})-${BOOTSTRAP_VERSION}.tbz"
+}
+
+src_compile()
+{
+	export GOROOT_BOOTSTRAP="${WORKDIR}"/go-$(go_os ${CBUILD})-$(go_arch ${CBUILD})-bootstrap
+	if use gccgo; then
+		mkdir -p "${GOROOT_BOOTSTRAP}/bin" || die
+		local go_binary=$(gcc-config --get-bin-path)/go-$(gcc-major-version)
+		[[ -x ${go_binary} ]] || go_binary=$(
+			find "${EPREFIX}"/usr/${CHOST}/gcc-bin/*/go-$(gcc-major-version) |
+				sort -V | tail -n1)
+		[[ -x ${go_binary} ]] ||
+			die "go-$(gcc-major-version): command not found"
+		ln -s "${go_binary}" "${GOROOT_BOOTSTRAP}/bin/go" || die
+	elif use system-bootstrap; then
+		export GOROOT_BOOTSTRAP="${EPREFIX}"/usr/lib/go
+	fi
+	export GOROOT_FINAL="${EPREFIX}"/usr/lib/go
+	export GOROOT="$(pwd)"
+	export GOBIN="${GOROOT}/bin"
+
+	# 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
+
+	cd src
+	./make.bash || die "build failed"
+}
+
+src_test()
+{
+	go_cross_compile && return 0
+
+	cd src
+	PATH="${GOBIN}:${PATH}" \
+	./run.bash -no-rebuild || die "tests failed"
+}
+
+src_install()
+{
+	local bin_path f x
+
+	dodir /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
+	#
+	# deliberately use cp to retain permissions
+	cp -R api bin doc lib pkg misc src test "${ED}"/usr/lib/go
+	if go_cross_compile; then
+		bin_path="bin/$(go_tuple)"
+	else
+		bin_path=bin
+	fi
+	for x in ${bin_path}/*; do
+		f=${x##*/}
+		dosym ../lib/go/${bin_path}/${f} /usr/bin/${f}
+	done
+	einstalldocs
+
+	if [[ ${CHOST} == *-darwin* ]] ; then
+		# fix install_name for test object (binutils_test) on Darwin, it
+		# is never used in real circumstances
+		local libmac64="${EPREFIX}"/usr/lib/go/src/cmd/vendor/github.com/
+		      libmac64+=google/pprof/internal/binutils/testdata/lib_mac_64
+		install_name_tool -id "${libmac64}" "${D}${libmac64}"
+	fi
+}