dev-util/electron: Fix compilation with ICU-58 (#599346)

Original patch by Brad Laue.

Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=599346

Package-Manager: portage-2.3.0
Closes: https://github.com/gentoo/gentoo/pull/2835

Signed-off-by: David Seifert <soap@gentoo.org>

1 files changed, 766 insertions, 0 deletions

diff --git a/dev-util/electron/electron-1.3.6.ebuild b/dev-util/electron/electron-1.3.6.ebuild
new file mode 100644
index 000000000000..1ec653dd2fa0
--- /dev/null
+++ b/dev-util/electron/electron-1.3.6.ebuild
@@ -0,0 +1,766 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI="5"
+PYTHON_COMPAT=( python2_7 )
+
+CHROMIUM_LANGS="am ar bg bn ca cs da de el en-GB es es-419 et fa fi fil fr gu he
+	hi hr hu id it ja kn ko lt lv ml mr ms nb nl pl pt-BR pt-PT ro ru sk sl sr
+	sv sw ta te th tr uk vi zh-CN zh-TW"
+
+inherit check-reqs chromium-2 eutils gnome2-utils flag-o-matic multilib \
+	multiprocessing pax-utils portability python-any-r1 readme.gentoo-r1 \
+	toolchain-funcs versionator virtualx xdg-utils
+
+# Keep this in sync with vendor/brightray/vendor/libchromiumcontent/VERSION
+CHROMIUM_VERSION="52.0.2743.82"
+# Keep this in sync with vendor/brightray
+BRIGHTRAY_COMMIT="554946c7873bbc6930779c871fe230856575049a"
+# Keep this in sync with vendor/node
+NODE_COMMIT="ee8c429deaee0adeeef069c3ad34c0defe53a567"
+# Keep this in sync with vendor/native_mate
+NATIVE_MATE_COMMIT="b5e5de626c6a57e44c7e6448d8bbaaac475d493c"
+# Keep this in sync with vendor/brightray/vendor/libchromiumcontent
+LIBCHROMIUMCONTENT_COMMIT="c5cf295ef93d4ee88bff0c4b06b28ff0969a890e"
+# Keep this in sync with package.json#devDependencies
+ASAR_VERSION="0.12.1"
+
+CHROMIUM_P="chromium-${CHROMIUM_VERSION}"
+BRIGHTRAY_P="brightray-${BRIGHTRAY_COMMIT}"
+NODE_P="node-${NODE_COMMIT}"
+NATIVE_MATE_P="native-mate-${NATIVE_MATE_COMMIT}"
+LIBCHROMIUMCONTENT_P="libchromiumcontent-${LIBCHROMIUMCONTENT_COMMIT}"
+ASAR_P="asar-${ASAR_VERSION}"
+
+DESCRIPTION="Cross platform application development framework based on web technologies"
+HOMEPAGE="http://electron.atom.io/"
+SRC_URI="
+	https://commondatastorage.googleapis.com/chromium-browser-official/${CHROMIUM_P}.tar.xz
+	https://github.com/electron/electron/archive/v${PV}.tar.gz -> ${P}.tar.gz
+	https://github.com/electron/brightray/archive/${BRIGHTRAY_COMMIT}.tar.gz -> ${BRIGHTRAY_P}.tar.gz
+	https://github.com/electron/node/archive/${NODE_COMMIT}.tar.gz -> electron-${NODE_P}.tar.gz
+	https://github.com/zcbenz/native-mate/archive/${NATIVE_MATE_COMMIT}.tar.gz -> ${NATIVE_MATE_P}.tar.gz
+	https://github.com/electron/libchromiumcontent/archive/${LIBCHROMIUMCONTENT_COMMIT}.tar.gz -> ${LIBCHROMIUMCONTENT_P}.tar.gz
+	https://github.com/elprans/asar/releases/download/v${ASAR_VERSION}-gentoo/asar-build.tar.gz -> ${ASAR_P}.tar.gz
+"
+
+S="${WORKDIR}/${CHROMIUM_P}"
+ELECTRON_S="${WORKDIR}/${P}"
+NODE_S="${S}/vendor/node"
+BRIGHTRAY_S="${S}/vendor/brightray"
+NATIVE_MATE_S="${S}/vendor/native_mate"
+LIBCC_S="${BRIGHTRAY_S}/vendor/libchromiumcontent"
+
+LICENSE="BSD"
+SLOT="$(get_version_component_range 1-2)"
+KEYWORDS="~amd64"
+IUSE="custom-cflags cups gnome gnome-keyring hidpi kerberos lto neon pic +proprietary-codecs pulseaudio selinux +system-ffmpeg +tcmalloc"
+RESTRICT="!system-ffmpeg? ( proprietary-codecs? ( bindist ) )"
+
+# Native Client binaries are compiled with different set of flags, bug #452066.
+QA_FLAGS_IGNORED=".*\.nexe"
+
+# Native Client binaries may be stripped by the build system, which uses the
+# right tools for it, bug #469144 .
+QA_PRESTRIPPED=".*\.nexe"
+
+RDEPEND="!<dev-util/electron-0.36.12-r4
+	>=app-accessibility/speech-dispatcher-0.8:=
+	app-arch/bzip2:=
+	app-arch/snappy:=
+	>=app-eselect/eselect-electron-1.0.0
+	cups? ( >=net-print/cups-1.3.11:= )
+	>=dev-libs/elfutils-0.149
+	dev-libs/expat:=
+	dev-libs/glib:=
+	>=dev-libs/icu-55.1:=
+	>=dev-libs/jsoncpp-0.5.0-r1:=
+	>=dev-libs/libevent-1.4.13:=
+	dev-libs/libxml2:=[icu]
+	dev-libs/libxslt:=
+	dev-libs/nspr:=
+	>=dev-libs/nss-3.14.3:=
+	dev-libs/re2:=
+	gnome? ( >=gnome-base/gconf-2.24.0:= )
+	gnome-keyring? ( >=gnome-base/libgnome-keyring-3.12:= )
+	>=media-libs/alsa-lib-1.0.19:=
+	media-libs/flac:=
+	media-libs/fontconfig:=
+	media-libs/freetype:=
+	>=media-libs/harfbuzz-0.9.41:=[icu(+)]
+	media-libs/libexif:=
+	>=media-libs/libjpeg-turbo-1.2.0-r1:=
+	media-libs/libpng:0=
+	>=media-libs/libwebp-0.4.0:=
+	media-libs/speex:=
+	pulseaudio? ( media-sound/pulseaudio:= )
+	system-ffmpeg? ( >=media-video/ffmpeg-2.7.2:=[opus,vorbis,vpx] )
+	sys-apps/dbus:=
+	sys-apps/pciutils:=
+	>=sys-libs/libcap-2.22:=
+	sys-libs/zlib:=[minizip]
+	virtual/udev
+	x11-libs/cairo:=
+	x11-libs/gdk-pixbuf:=
+	x11-libs/gtk+:2=
+	x11-libs/libdrm
+	x11-libs/libnotify:=
+	x11-libs/libX11:=
+	x11-libs/libXcomposite:=
+	x11-libs/libXcursor:=
+	x11-libs/libXdamage:=
+	x11-libs/libXext:=
+	x11-libs/libXfixes:=
+	>=x11-libs/libXi-1.6.0:=
+	x11-libs/libXinerama:=
+	x11-libs/libXrandr:=
+	x11-libs/libXrender:=
+	x11-libs/libXScrnSaver:=
+	x11-libs/libXtst:=
+	x11-libs/pango:=
+	kerberos? ( virtual/krb5 )
+	>=net-libs/http-parser-2.6.2:=
+	>=dev-libs/libuv-1.8.0:=
+	>=dev-libs/openssl-1.0.2g:0=[-bindist]"
+DEPEND="${RDEPEND}
+	!arm? (
+		dev-lang/yasm
+	)
+	dev-lang/perl
+	dev-perl/JSON
+	>=dev-util/gperf-3.0.3
+	dev-util/ninja
+	sys-apps/hwids[usb(+)]
+	>=sys-devel/bison-2.4.3
+	sys-devel/flex
+	virtual/pkgconfig"
+
+# For nvidia-drivers blocker, see bug #413637 .
+RDEPEND+="
+	x11-misc/xdg-utils
+	virtual/opengl
+	virtual/ttf-fonts
+	selinux? ( sec-policy/selinux-chromium )
+	tcmalloc? ( !<x11-drivers/nvidia-drivers-331.20 )"
+
+# Python dependencies. The DEPEND part needs to be kept in sync
+# with python_check_deps.
+DEPEND+=" $(python_gen_any_dep '
+	dev-python/beautifulsoup:python-2[${PYTHON_USEDEP}]
+	dev-python/beautifulsoup:4[${PYTHON_USEDEP}]
+	dev-python/html5lib[${PYTHON_USEDEP}]
+	dev-python/jinja[${PYTHON_USEDEP}]
+	dev-python/jsmin[${PYTHON_USEDEP}]
+	dev-python/ply[${PYTHON_USEDEP}]
+	dev-python/simplejson[${PYTHON_USEDEP}]
+')"
+python_check_deps() {
+	has_version --host-root "dev-python/beautifulsoup:python-2[${PYTHON_USEDEP}]" &&
+	has_version --host-root ">=dev-python/beautifulsoup-4.3.2:4[${PYTHON_USEDEP}]" &&
+	has_version --host-root "dev-python/html5lib[${PYTHON_USEDEP}]" &&
+	has_version --host-root "dev-python/jinja[${PYTHON_USEDEP}]" &&
+	has_version --host-root "dev-python/jsmin[${PYTHON_USEDEP}]" &&
+	has_version --host-root "dev-python/ply[${PYTHON_USEDEP}]" &&
+	has_version --host-root "dev-python/simplejson[${PYTHON_USEDEP}]"
+}
+
+if ! has chromium_pkg_die ${EBUILD_DEATH_HOOKS}; then
+	EBUILD_DEATH_HOOKS+=" chromium_pkg_die";
+fi
+
+pkg_pretend() {
+	if [[ $(tc-getCC)$ == *gcc* ]] && \
+		[[ $(gcc-major-version)$(gcc-minor-version) -lt 48 ]]; then
+		die 'At least gcc 4.8 is required, see bugs: #535730, #525374, #518668.'
+	fi
+
+	# LTO pass requires more file descriptors
+	if use lto; then
+		local lto_n_rlimit_min="16384"
+		local maxfiles=$(ulimit -n -H)
+		if [ "${maxfiles}" -lt "${lto_n_rlimit_min}" ]; then
+			eerror ""
+			eerror "Building with USE=\"lto\" requires file descriptor" \
+				   "limit to be no less than ${lto_n_rlimit_min}."
+		    eerror "The current limit for portage is ${maxfiles}."
+			eerror "Please add the following to /etc/security/limits.conf:"
+			eerror ""
+			eerror "   root hard    nofile  ${lto_n_rlimit_min}"
+			eerror "   root soft    nofile  ${lto_n_rlimit_min}"
+			eerror ""
+			die
+		fi
+	fi
+
+	# Check build requirements, bug #541816 and bug #471810 .
+	CHECKREQS_MEMORY="3G"
+	use lto && CHECKREQS_MEMORY="5G"
+	CHECKREQS_DISK_BUILD="10G"
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		CHECKREQS_DISK_BUILD="25G"
+	fi
+	eshopts_pop
+	check-reqs_pkg_pretend
+}
+
+pkg_setup() {
+	# Make sure the build system will use the right python, bug #344367.
+	python-any-r1_pkg_setup
+
+	chromium_suid_sandbox_check_kernel_config
+}
+
+_unnest_patches() {
+	local _s="${1%/}/" relpath out
+
+	for f in $(find "${_s}" -mindepth 2 -name *.patch -printf \"%P\"\\n); do
+		relpath="$(dirname ${f})"
+		out="${_s}/${relpath////_}_$(basename ${f})"
+		sed -r -e "s|^([-+]{3}) (.*)$|\1 ${relpath}/\2 ${f}|g" > "${out}"
+	done
+}
+
+_get_install_suffix() {
+	local c=(${SLOT//\// })
+	local slot=${c[0]}
+	local suffix
+
+	if [[ "${slot}" == "0" ]]; then
+		suffix=""
+	else
+		suffix="-${slot}"
+	fi
+
+	echo -n "${suffix}"
+}
+
+_get_install_dir() {
+	echo -n "/usr/$(get_libdir)/electron$(_get_install_suffix)"
+}
+
+src_prepare() {
+	# Merge Electron code and its submodules into the Chromium source tree
+	# so that everything can be configured and built in a single pass.
+	#
+	rsync -a --ignore-existing "${ELECTRON_S}/" "${S}/" || die
+	rm -r "${NODE_S}" &&
+		mv "${WORKDIR}/${NODE_P}" "${NODE_S}" || die
+	rm -r "${BRIGHTRAY_S}" &&
+		mv "${WORKDIR}/${BRIGHTRAY_P}" "${BRIGHTRAY_S}" || die
+	rm -r "${NATIVE_MATE_S}" &&
+		mv "${WORKDIR}/${NATIVE_MATE_P}" "${NATIVE_MATE_S}" || die
+	rm -r "${LIBCC_S}" &&
+		mv "${WORKDIR}/${LIBCHROMIUMCONTENT_P}" "${LIBCC_S}" || die
+	rm -r "${S}/vendor/breakpad" &&
+		ln -s "../breakpad" "${S}/vendor/breakpad" || die
+	ln -s "${WORKDIR}/${ASAR_P}/node_modules" "${S}/node_modules" || die
+
+	# electron patches
+	epatch "${FILESDIR}/${P}.patch"
+
+	# node patches
+	cd "${NODE_S}" || die
+	epatch "${FILESDIR}/${P}-vendor-node.patch"
+	epatch "${FILESDIR}/electron-vendor-node-external-snapshots-r0.patch"
+	# make sure node uses the correct version of v8
+	rm -r deps/v8 || die
+	ln -s ../../../v8 deps/ || die
+
+	# make sure we use python2.* while using gyp
+	sed -i -e "s/python/${EPYTHON}/" deps/npm/node_modules/node-gyp/gyp/gyp || die
+	sed -i -e "s/|| 'python'/|| '${EPYTHON}'/" deps/npm/node_modules/node-gyp/lib/configure.js || die
+
+	# less verbose install output (stating the same as portage, basically)
+	sed -i -e "/print/d" tools/install.py || die
+
+	# proper libdir, hat tip @ryanpcmcquen https://github.com/iojs/io.js/issues/504
+	local LIBDIR=$(get_libdir)
+	sed -i -e "s|lib/|${LIBDIR}/|g" tools/install.py || die
+	sed -i -e "s/'lib'/'${LIBDIR}'/" lib/module.js || die
+	sed -i -e "s|\"lib\"|\"${LIBDIR}\"|" deps/npm/lib/npm.js || die
+
+	# brightray patches
+	cd "${BRIGHTRAY_S}" || die
+	epatch "${FILESDIR}/${P}-vendor-brightray.patch"
+
+	# libcc patches
+	cd "${LIBCC_S}" || die
+	epatch "${FILESDIR}/${P}-vendor-libchromiumcontent.patch"
+
+	# chromium patches
+	cd "${S}" || die
+	epatch "${FILESDIR}/chromium-system-ffmpeg-r2.patch"
+	epatch "${FILESDIR}/chromium-system-jinja-r9.patch"
+	epatch "${FILESDIR}/chromium-disable-widevine.patch"
+	epatch "${FILESDIR}/chromium-last-commit-position-r0.patch"
+	epatch "${FILESDIR}/chromium-snapshot-toolchain-r1.patch"
+	epatch "${FILESDIR}/chromium-remove-gardiner-mod-font.patch"
+	epatch "${FILESDIR}/chromium-pdfium-r0.patch"
+	epatch "${FILESDIR}/chromium-system-zlib-r0.patch"
+	epatch "${FILESDIR}/chromium-linker-warnings-r0.patch"
+	epatch "${FILESDIR}/chromium-ffmpeg-license-r0.patch"
+	epatch "${FILESDIR}/chromium-shared-v8-r1.patch"
+	epatch "${FILESDIR}/chromium-lto-fixes-r1.patch"
+	epatch "${FILESDIR}/chromium-icu-58-r1.patch"
+
+	# libcc chromium patches
+	_unnest_patches "${LIBCC_S}/patches"
+
+	EPATCH_SOURCE="${LIBCC_S}/patches" \
+	EPATCH_SUFFIX="patch" \
+	EPATCH_FORCE="yes" \
+	EPATCH_EXCLUDE="third_party_icu*" \
+	EPATCH_MULTI_MSG="Applying libchromiumcontent patches..." \
+		epatch
+
+	# build scripts
+	mkdir -p "${S}/chromiumcontent" || die
+	cp -a "${LIBCC_S}/chromiumcontent" "${S}/" || die
+	cp -a "${LIBCC_S}/tools/linux/" "${S}/tools/" || die
+
+	local conditional_bundled_libraries=""
+	if ! use system-ffmpeg; then
+		conditional_bundled_libraries+=" third_party/ffmpeg"
+	fi
+
+	# Remove most bundled libraries. Some are still needed.
+	build/linux/unbundle/remove_bundled_libraries.py \
+		${conditional_bundled_libraries} \
+		'base/third_party/dmg_fp' \
+		'base/third_party/dynamic_annotations' \
+		'base/third_party/icu' \
+		'base/third_party/nspr' \
+		'base/third_party/superfasthash' \
+		'base/third_party/symbolize' \
+		'base/third_party/valgrind' \
+		'base/third_party/xdg_mime' \
+		'base/third_party/xdg_user_dirs' \
+		'breakpad/src/third_party/curl' \
+		'breakpad/src/third_party/musl' \
+		'chrome/third_party/mozilla_security_manager' \
+		'courgette/third_party' \
+		'net/third_party/mozilla_security_manager' \
+		'net/third_party/nss' \
+		'third_party/WebKit' \
+		'third_party/analytics' \
+		'third_party/angle' \
+		'third_party/angle/src/third_party/compiler' \
+		'third_party/angle/src/third_party/libXNVCtrl' \
+		'third_party/angle/src/third_party/murmurhash' \
+		'third_party/angle/src/third_party/trace_event' \
+		'third_party/boringssl' \
+		'third_party/brotli' \
+		'third_party/cacheinvalidation' \
+		'third_party/catapult' \
+		'third_party/catapult/third_party/py_vulcanize' \
+		'third_party/catapult/third_party/py_vulcanize/third_party/rcssmin' \
+		'third_party/catapult/third_party/py_vulcanize/third_party/rjsmin' \
+		'third_party/catapult/tracing/third_party/components/polymer' \
+		'third_party/catapult/tracing/third_party/d3' \
+		'third_party/catapult/tracing/third_party/gl-matrix' \
+		'third_party/catapult/tracing/third_party/jszip' \
+		'third_party/cld_2' \
+		'third_party/cros_system_api' \
+		'third_party/cython/python_flags.py' \
+		'third_party/devscripts' \
+		'third_party/dom_distiller_js' \
+		'third_party/dom_distiller_js/dist/proto_gen/third_party/dom_distiller_js' \
+		'third_party/fips181' \
+		'third_party/flot' \
+		'third_party/google_input_tools' \
+		'third_party/google_input_tools/third_party/closure_library' \
+		'third_party/google_input_tools/third_party/closure_library/third_party/closure' \
+		'third_party/hunspell' \
+		'third_party/iccjpeg' \
+		'third_party/jstemplate' \
+		'third_party/khronos' \
+		'third_party/leveldatabase' \
+		'third_party/libXNVCtrl' \
+		'third_party/libaddressinput' \
+		'third_party/libjingle' \
+		'third_party/libjpeg_turbo' \
+		'third_party/libphonenumber' \
+		'third_party/libpng' \
+		'third_party/libsecret' \
+		'third_party/libsrtp' \
+		'third_party/libudev' \
+		'third_party/libusb' \
+		'third_party/libvpx' \
+		'third_party/libvpx/source/libvpx/third_party/x86inc' \
+		'third_party/libwebm' \
+		'third_party/libxml/chromium' \
+		'third_party/libyuv' \
+		'third_party/lss' \
+		'third_party/lzma_sdk' \
+		'third_party/mesa' \
+		'third_party/modp_b64' \
+		'third_party/mt19937ar' \
+		'third_party/openh264' \
+		'third_party/openmax_dl' \
+		'third_party/opus' \
+		'third_party/ots' \
+		'third_party/pdfium' \
+		'third_party/pdfium/third_party/agg23' \
+		'third_party/pdfium/third_party/base' \
+		'third_party/pdfium/third_party/bigint' \
+		'third_party/pdfium/third_party/freetype' \
+		'third_party/pdfium/third_party/lcms2-2.6' \
+		'third_party/pdfium/third_party/libjpeg' \
+		'third_party/pdfium/third_party/libopenjpeg20' \
+		'third_party/pdfium/third_party/libpng16' \
+		'third_party/pdfium/third_party/libtiff' \
+		'third_party/pdfium/third_party/zlib_v128' \
+		'third_party/polymer' \
+		'third_party/protobuf' \
+		'third_party/protobuf/third_party/six' \
+		'third_party/qcms' \
+		'third_party/re2' \
+		'third_party/sfntly' \
+		'third_party/skia' \
+		'third_party/smhasher' \
+		'third_party/sqlite' \
+		'third_party/tcmalloc' \
+		'third_party/usrsctp' \
+		'third_party/web-animations-js' \
+		'third_party/webdriver' \
+		'third_party/webrtc' \
+		'third_party/widevine' \
+		'third_party/woff2' \
+		'third_party/x86inc' \
+		'third_party/zlib/google' \
+		'url/third_party/mozilla' \
+		'v8/src/third_party/fdlibm' \
+		'v8/src/third_party/valgrind' \
+		--do-remove || die
+
+	epatch_user
+}
+
+src_configure() {
+	local myconf=""
+
+	# Never tell the build system to "enable" SSE2, it has a few unexpected
+	# additions, bug #336871.
+	myconf+=" -Ddisable_sse2=1"
+
+	# Disable nacl, we can't build without pnacl (http://crbug.com/269560).
+	myconf+=" -Ddisable_nacl=1"
+
+	# Disable glibc Native Client toolchain, we don't need it (bug #417019).
+	# myconf+=" -Ddisable_glibc=1"
+
+	# TODO: also build with pnacl
+	# myconf+=" -Ddisable_pnacl=1"
+
+	# It would be awkward for us to tar the toolchain and get it untarred again
+	# during the build.
+	# myconf+=" -Ddisable_newlib_untar=1"
+
+	# Make it possible to remove third_party/adobe.
+	echo > "${T}/flapper_version.h" || die
+	myconf+=" -Dflapper_version_h_file=${T}/flapper_version.h"
+
+	# Use system-provided libraries.
+	# TODO: use_system_hunspell (upstream changes needed).
+	# TODO: use_system_libsrtp (bug #459932).
+	# TODO: use_system_libusb (http://crbug.com/266149).
+	# TODO: use_system_libvpx (http://crbug.com/494939).
+	# TODO: use_system_opus (https://code.google.com/p/webrtc/issues/detail?id=3077).
+	# TODO: use_system_protobuf (bug #525560).
+	# TODO: use_system_ssl (http://crbug.com/58087).
+	# TODO: use_system_sqlite (http://crbug.com/22208).
+	myconf+="
+		-Duse_system_bzip2=1
+		-Duse_system_ffmpeg=$(usex system-ffmpeg 1 0)
+		-Duse_system_flac=1
+		-Duse_system_harfbuzz=1
+		-Duse_system_icu=1
+		-Duse_system_jsoncpp=1
+		-Duse_system_libevent=1
+		-Duse_system_libwebp=1
+		-Duse_system_libxml=1
+		-Duse_system_libxslt=1
+		-Duse_system_minizip=1
+		-Duse_system_nspr=1
+		-Duse_system_snappy=1
+		-Duse_system_speex=1
+		-Duse_system_xdg_utils=1
+		-Duse_system_zlib=1"
+
+	# Needed for system icu - we don't need additional data files.
+	myconf+=" -Dicu_use_data_file_flag=0"
+	myconf+=" -Dgenerate_character_data=0"
+
+	# TODO: patch gyp so that this arm conditional is not needed.
+	if ! use arm; then
+		myconf+="
+			-Duse_system_yasm=1"
+	fi
+
+	# Optional dependencies.
+	# TODO: linux_link_kerberos, bug #381289.
+	myconf+="
+		$(gyp_use cups)
+		$(gyp_use gnome use_gconf)
+		$(gyp_use gnome-keyring use_gnome_keyring)
+		$(gyp_use gnome-keyring linux_link_gnome_keyring)
+		$(gyp_use hidpi enable_hidpi)
+		$(gyp_use kerberos)
+		$(gyp_use lto)
+		$(gyp_use pulseaudio)
+		$(gyp_use tcmalloc use_allocator tcmalloc none)"
+
+	# Use explicit library dependencies instead of dlopen.
+	# This makes breakages easier to detect by revdep-rebuild.
+	myconf+="
+		-Dlinux_link_gsettings=1
+		-Dlinux_link_libpci=1
+		-Dlinux_link_libspeechd=1
+		-Dlibspeechd_h_prefix=speech-dispatcher/"
+
+	# TODO: use the file at run time instead of effectively compiling it in.
+	myconf+="
+		-Dusb_ids_path=/usr/share/misc/usb.ids"
+
+	# Save space by removing DLOG and DCHECK messages (about 6% reduction).
+	myconf+="
+		-Dlogging_like_official_build=1"
+
+	if [[ $(tc-getCC) == *clang* ]]; then
+		myconf+=" -Dclang=1"
+	else
+		myconf+=" -Dclang=0"
+	fi
+
+	# Never use bundled gold binary. Disable gold linker flags for now.
+	# Do not use bundled clang.
+	myconf+="
+		-Dclang_use_chrome_plugins=0
+		-Dhost_clang=0
+		-Dlinux_use_bundled_binutils=0
+		-Dlinux_use_bundled_gold=0
+		-Dlinux_use_gold_flags=0
+		-Dsysroot="
+
+	ffmpeg_branding="$(usex proprietary-codecs Chrome Chromium)"
+	myconf+=" -Dproprietary_codecs=1 -Dffmpeg_branding=${ffmpeg_branding}"
+
+	# Set up Google API keys, see http://www.chromium.org/developers/how-tos/api-keys .
+	# Note: these are for Gentoo use ONLY. For your own distribution,
+	# please get your own set of keys. Feel free to contact chromium@gentoo.org
+	# for more info.
+	local google_api_key="AIzaSyDEAOvatFo0eTgsV_ZlEzx0ObmepsMzfAc"
+	local google_default_client_id="329227923882.apps.googleusercontent.com"
+	local google_default_client_secret="vgKG0NNv7GoDpbtoFNLxCUXu"
+	myconf+=" -Dgoogle_api_key=${google_api_key}
+		-Dgoogle_default_client_id=${google_default_client_id}
+		-Dgoogle_default_client_secret=${google_default_client_secret}"
+
+	local myarch="$(tc-arch)"
+	if [[ $myarch = amd64 ]] ; then
+		target_arch=x64
+		ffmpeg_target_arch=x64
+	elif [[ $myarch = x86 ]] ; then
+		target_arch=ia32
+		ffmpeg_target_arch=ia32
+	elif [[ $myarch = arm64 ]] ; then
+		target_arch=arm64
+		ffmpeg_target_arch=arm64
+	elif [[ $myarch = arm ]] ; then
+		target_arch=arm
+		ffmpeg_target_arch=$(usex neon arm-neon arm)
+		# TODO: re-enable NaCl (NativeClient).
+		local CTARGET=${CTARGET:-${CHOST}}
+		if [[ $(tc-is-softfloat) == "no" ]]; then
+
+			myconf_gyp+=" -Darm_float_abi=hard"
+		fi
+		filter-flags "-mfpu=*"
+		use neon || myconf_gyp+=" -Darm_fpu=${ARM_FPU:-vfpv3-d16}"
+
+		if [[ ${CTARGET} == armv[78]* ]]; then
+			myconf_gyp+=" -Darmv7=1"
+		else
+			myconf_gyp+=" -Darmv7=0"
+		fi
+		myconf_gyp+=" -Dsysroot=
+			$(gyp_use neon arm_neon)
+			-Ddisable_nacl=1"
+	else
+		die "Failed to determine target arch, got '$myarch'."
+	fi
+
+	myconf+=" -Dtarget_arch=${target_arch}"
+
+	# Make sure that -Werror doesn't get added to CFLAGS by the build system.
+	# Depending on GCC version the warnings are different and we don't want
+	# the build to fail because of that.
+	myconf+=" -Dwerror="
+
+	# Disable fatal linker warnings, bug 506268.
+	myconf+=" -Ddisable_fatal_linker_warnings=1"
+
+	# Avoid CFLAGS problems, bug #352457, bug #390147.
+	if ! use custom-cflags; then
+		replace-flags "-Os" "-O2"
+		strip-flags
+
+		# Prevent linker from running out of address space, bug #471810 .
+		if use x86; then
+			filter-flags "-g*"
+		fi
+
+		# Prevent libvpx build failures. Bug 530248, 544702, 546984.
+		if [[ ${myarch} == amd64 || ${myarch} == x86 ]]; then
+			filter-flags -mno-mmx -mno-sse2 -mno-ssse3 -mno-sse4.1 \
+						 -mno-avx -mno-avx2
+		fi
+	fi
+
+	# Make sure the build system will use the right tools, bug #340795.
+	tc-export AR CC CXX NM
+
+	# Tools for building programs to be executed on the build system, bug #410883.
+	if tc-is-cross-compiler; then
+		export AR_host=$(tc-getBUILD_AR)
+		export CC_host=$(tc-getBUILD_CC)
+		export CXX_host=$(tc-getBUILD_CXX)
+		export NM_host=$(tc-getBUILD_NM)
+	fi
+
+	# Bug 491582.
+	export TMPDIR="${WORKDIR}/temp"
+	mkdir -p -m 755 "${TMPDIR}" || die
+
+	if ! use system-ffmpeg; then
+		local build_ffmpeg_args=""
+		if use pic && [[ "${ffmpeg_target_arch}" == "ia32" ]]; then
+			build_ffmpeg_args+=" --disable-asm"
+		fi
+
+		# Re-configure bundled ffmpeg. See bug #491378 for example reasons.
+		einfo "Configuring bundled ffmpeg..."
+		pushd third_party/ffmpeg > /dev/null || die
+		chromium/scripts/build_ffmpeg.py linux ${ffmpeg_target_arch} \
+			--branding ${ffmpeg_branding} -- ${build_ffmpeg_args} || die
+		chromium/scripts/copy_config.sh || die
+		chromium/scripts/generate_gyp.py || die
+		popd > /dev/null || die
+	fi
+
+	third_party/libaddressinput/chromium/tools/update-strings.py || die
+
+	touch chrome/test/data/webui/i18n_process_css_test.html || die
+
+	einfo "Configuring bundled nodejs..."
+	pushd vendor/node > /dev/null || die
+	# Make sure gyp_node does not run
+	echo '#!/usr/bin/env python' > tools/gyp_node.py || die
+	# --shared-libuv cannot be used as electron's node fork
+	# patches uv_loop structure.
+	./configure --shared --without-bundled-v8 --shared-openssl \
+				--shared-http-parser --shared-zlib --without-npm \
+				--with-intl=system-icu --without-dtrace \
+				--dest-cpu=${target_arch} --prefix="" || die
+	popd > /dev/null || die
+
+	# libchromiumcontent configuration
+	myconf+=" -Dcomponent=static_library"
+	myconf+=" -Dmac_mas_build=0"
+	myconf+=' -Dicu_small="false"'
+	myconf+=" -Dlibchromiumcontent_component=0"
+	myconf+=" -Dlibrary=static_library"
+	myconf+=" -Dmas_build=0"
+
+	einfo "Configuring electron..."
+	build/linux/unbundle/replace_gyp_files.py ${myconf} || die
+
+	myconf+=" -Ivendor/node/config.gypi
+			  -Icommon.gypi
+			  electron.gyp"
+
+	egyp_chromium ${myconf} || die
+}
+
+eninja() {
+	if [[ -z ${NINJAOPTS+set} ]]; then
+		local jobs=$(makeopts_jobs)
+		local loadavg=$(makeopts_loadavg)
+
+		if [[ ${MAKEOPTS} == *-j* && ${jobs} != 999 ]]; then
+			NINJAOPTS+=" -j ${jobs}"
+		fi
+		if [[ ${MAKEOPTS} == *-l* && ${loadavg} != 999 ]]; then
+			NINJAOPTS+=" -l ${loadavg}"
+		fi
+	fi
+	set -- ninja -v ${NINJAOPTS} "$@"
+	echo "$@"
+	"$@"
+}
+
+src_compile() {
+	local ninja_targets="electron" compile_target="out/R"
+
+	eninja -C ${compile_target} mksnapshot || die
+	pax-mark -m ${compile_target}/mksnapshot
+
+	eninja -C ${compile_target} nodebin || die
+	pax-mark -m ${compile_target}/nodebin
+
+	# Even though ninja autodetects number of CPUs, we respect
+	# user's options, for debugging with -j 1 or any other reason.
+	eninja -C ${compile_target} ${ninja_targets} || die
+}
+
+src_install() {
+	local install_dir="$(_get_install_dir)"
+	local install_suffix="$(_get_install_suffix)"
+	local LIBDIR="${ED}/usr/$(get_libdir)"
+
+	pushd out/R/locales > /dev/null || die
+	chromium_remove_language_paks
+	popd > /dev/null || die
+
+	# Install Electron
+	insinto "${install_dir}"
+	exeinto "${install_dir}"
+	newexe out/R/nodebin node
+	doexe out/R/electron
+	doins out/R/libv8.so
+	doins out/R/libnode.so
+	fperms +x "${install_dir}/libv8.so" "${install_dir}/libnode.so"
+	doins out/R/content_shell.pak
+	doins out/R/natives_blob.bin
+	doins out/R/snapshot_blob.bin
+	rm -r out/R/resources/inspector || die
+	doins -r out/R/resources
+	doins -r out/R/locales
+	dosym "${install_dir}/electron" "/usr/bin/electron${install_suffix}"
+
+	pax-mark -rm "${ED}/${install_dir}/electron"
+
+	# Install Node headers
+	HEADERS_ONLY=1 \
+		"${S}/vendor/node/tools/install.py" install "${ED}" "/usr" || die
+	# set up a symlink structure that npm expects..
+	dodir /usr/include/node/deps/{v8,uv}
+	dosym . /usr/include/node/src
+	for var in deps/{uv,v8}/include; do
+		dosym ../.. /usr/include/node/${var}
+	done
+
+	dodir "/usr/include/electron${install_suffix}"
+	mv "${ED}/usr/include/node" \
+	   "${ED}/usr/include/electron${install_suffix}/node" || die
+}
+
+pkg_postinst() {
+	eselect electron update
+}
+
+pkg_prerm() {
+	eselect electron update
+}