www-client/chromium: add 122.0.6261.39

Signed-off-by: Matt Jolly <kangie@gentoo.org>

2 files changed, 1383 insertions, 0 deletions

diff --git a/www-client/chromium/Manifest b/www-client/chromium/Manifest
index 72748cea3e57..63e66931d7c4 100644
--- a/www-client/chromium/Manifest
+++ b/www-client/chromium/Manifest
@@ -10,6 +10,7 @@ DIST chromium-121.0.6167.184.tar.xz 3351296496 BLAKE2B 8990baaa5671740cf7b7e3e82
 DIST chromium-122-clang.tar.xz 50107164 BLAKE2B 6b07470aa9a3606d27784c4abfd1577ead70cc2c310c2db47d486a64d93d9984d9b7737493a9c30ea7e0f0868291f3aac8058ba23f81f940469d23bafa260bf1 SHA512 a46a7869bff2e5edd34167751257453fd89eae92bd5e291c4408ff0234997b04fae3df7906f46d83f72da5c4f11199489a14d8a55251d0efc3c0ffc1c56d9e22
 DIST chromium-122-rust.tar.xz 140507448 BLAKE2B cb00e65a617801b59a852d921ec1600f577a5a4d16a2df37d413de5cfa9d7274fd8e54d9bf8d21a94f93230e2a27a50f55a36d65e774daf38ba08ba292f52a45 SHA512 2cec9e9a84a494babe581aa900bc76babb3ba7c4622bf050537adf234644f054426eea87c01a037dc7e5f850dec55498d45e982ae334b8d6e99a85679c8aed79
 DIST chromium-122.0.6261.29.tar.xz 3400288704 BLAKE2B 1ba9535d28b7e4c30b77c296e9b77bd5ea57d9c7d5633fd80e43763477054c16428a859ca604a2a27c00008dcbe34639ec37e072f29f7adefcfe4b17f7804cb6 SHA512 0b829f95bed47e0c4c0a5ddc73332cd3cb2c9d25bb8e84027b6b38faae01b431f678985208589b88f866236a73f3e7c0dc08421a0951b2f1e4331fd9e9b7851e
+DIST chromium-122.0.6261.39.tar.xz 3406634528 BLAKE2B 6b6805a3f9eaa263e6a8c03bf23378dc7afd9943e1072f769120cc95ad207b7c8088818760f3fe7d68c8e3e56aaa6e1d3c144faad1a28d096228982185b68c7f SHA512 23d09f1ef31d9177c4dafda75537ef4118a1a1d4ab83724a042006c5e17471c17767eb9e4bb68f60c5984a0f94b4887d9fe18a6f6e890046056b627705d68b8b
 DIST chromium-patches-121-2.tar.bz2 5154 BLAKE2B c1ee5c5414fa21ad0fbbcaf5530efb423c6e96555cb437e430f7cec4b5ef25df4ae582945327194896890d148c156e5347826e0f1c9fa6d43a2e5f9aaa3f6919 SHA512 fb4bee9ab5c9e7e0cc7a1ed441ae214a5189a93b4c545391af631378e0ea195225052125669cf3ab8286734a7a0fbd54b31add6ba604eb1d314cb98ea59ed4a9
 DIST chromium-patches-121-3.tar.bz2 14100 BLAKE2B e068c07a0954b72b447cfb82605654ad5c6b15ba0efe9eb4804cdb019db27dddb6ae54ee94cc63c247cf7575e63c5ec09eee10e35906d85d9ae9d79763b35803 SHA512 4dbf69e903cc8d7e2eaa6c0c54c9fb59393d0f89bff5eaaa32bb3fd0e2b5bc9007b326dd7a7e0d590cc5e9d29a85a61a2540293317dc29e9dd4b8596eee1d587
 DIST chromium-patches-122-2.tar.bz2 5038 BLAKE2B fd104a7c1d81ecb9bf82da30a71916ff3d712ae710f1de8965cd0fb7395b6dced780f3a1af1ece8201dfe388fecff7b506cbb5cc5b32621895f37bb380cdc5aa SHA512 331401d324ca4b1b90a44019ba7d823f8461188bd19864216320bd97580d835ef3151da49c71aff695159440ed2b48fcec7afc1bcbc2c0f629cbbce7d80faf74
diff --git a/www-client/chromium/chromium-122.0.6261.39.ebuild b/www-client/chromium/chromium-122.0.6261.39.ebuild
new file mode 100644
index 000000000000..f64d30b881cd
--- /dev/null
+++ b/www-client/chromium/chromium-122.0.6261.39.ebuild
@@ -0,0 +1,1382 @@
+# Copyright 2009-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Can't do 12 yet: heavy use of imp, among other things (bug #915001, bug #915062)
+PYTHON_COMPAT=( python3_{10..11} )
+PYTHON_REQ_USE="xml(+)"
+
+# PACKAGING NOTES:
+# Google roll their bundled Clang every two weeks, and the bundled Rust
+# is rolled regularly and depends on that. While we do our best to build
+# with system Clang, we will eventually hit the point where we need to use
+# the bundled Clang due to the use of prerelease features. We've been lucky
+# enough so far that this hasn't been an issue.
+
+# We try and avoid forcing the use of libcxx, but sometimes it is unavoidable.
+# Remember to force the use of Clang when this is forced.
+
+# GCC is _not_ supported upstream, though patches are welcome. We do our
+# best to enable builds with GCC but reserve the right to force Clang
+# builds if we can't keep up with upstream's changes. Please comment
+# when forcing Clang builds so we can track the need for it.
+
+# GN is bundled with Chromium, but we always use the system version. Remember to
+# check for upstream changes to GN and update ebuild (and version below) as required.
+
+# These variables let us easily bound supported major dependency versions in one place.
+GCC_MIN_VER=12
+GN_MIN_VER=0.2143
+LLVM_MAX_SLOT=17
+LLVM_MIN_SLOT=16
+RUST_MIN_VER=1.72.0
+# grep 'CLANG_REVISION = ' ${S}/tools/clang/scripts/update.py -A1 | cut -c 18-
+GOOGLE_CLANG_VER="llvmorg-18-init-16072-gc4146121e940-5"
+# grep 'RUST_REVISION = ' ${S}/tools/rust/update_rust.py -A1 | cut -c 17-
+GOOGLE_RUST_VER="df0295f07175acc7325ce3ca4152eb05752af1f2-5"
+
+# https://bugs.chromium.org/p/v8/issues/detail?id=14449 - V8 used in 120 can't build with GCC
+: ${CHROMIUM_FORCE_CLANG=yes}
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101227 - Chromium 120:
+#    webrtc -  no matching member function for call to 'emplace'
+: ${CHROMIUM_FORCE_LIBCXX=yes}
+# 121's 'gcc_link_wrapper.py' currently fails if not using lld due to the addition of rust
+: ${CHROMIUM_FORCE_LLD=yes}
+
+: ${CHROMIUM_FORCE_GOOGLE_TOOLCHAIN=no}
+
+VIRTUALX_REQUIRED="pgo"
+
+CHROMIUM_LANGS="af am ar bg bn ca cs da de el en-GB es es-419 et fa fi fil fr gu he
+	hi hr hu id it ja kn ko lt lv ml mr ms nb nl pl pt-BR pt-PT ro ru sk sl sr
+	sv sw ta te th tr uk ur vi zh-CN zh-TW"
+
+inherit check-reqs chromium-2 desktop flag-o-matic llvm ninja-utils pax-utils
+inherit python-any-r1 qmake-utils readme.gentoo-r1 toolchain-funcs virtualx xdg-utils
+
+DESCRIPTION="Open-source version of Google Chrome web browser"
+HOMEPAGE="https://www.chromium.org/"
+PATCHSET_PPC64="121.0.6167.85-1raptor0~deb12u1"
+PATCH_V="${PV%%\.*}-2"
+SRC_URI="https://commondatastorage.googleapis.com/chromium-browser-official/${P}.tar.xz
+	system-toolchain? (
+		https://gitlab.com/Matt.Jolly/chromium-patches/-/archive/${PATCH_V}/chromium-patches-${PATCH_V}.tar.bz2
+	)
+	!system-toolchain? (
+		https://commondatastorage.googleapis.com/chromium-browser-clang/Linux_x64/clang-${GOOGLE_CLANG_VER}.tar.xz
+			-> chromium-${PV%%\.*}-clang.tar.xz
+		https://commondatastorage.googleapis.com/chromium-browser-clang/Linux_x64/rust-toolchain-${GOOGLE_RUST_VER}-${GOOGLE_CLANG_VER%??}.tar.xz
+			-> chromium-${PV%%\.*}-rust.tar.xz
+	)
+	ppc64? (
+		https://quickbuild.io/~raptor-engineering-public/+archive/ubuntu/chromium/+files/chromium_${PATCHSET_PPC64}.debian.tar.xz
+		https://deps.gentoo.zip/chromium-ppc64le-gentoo-patches-1.tar.xz
+	)
+	pgo? ( https://github.com/elkablo/chromium-profiler/releases/download/v0.2/chromium-profiler-0.2.tar )"
+
+LICENSE="BSD"
+SLOT="0/beta"
+KEYWORDS="~amd64 ~arm64"
+IUSE_SYSTEM_LIBS="+system-harfbuzz +system-icu +system-png +system-zstd"
+IUSE="+X ${IUSE_SYSTEM_LIBS} cups debug gtk4 +hangouts headless kerberos libcxx lto +official pax-kernel pgo +proprietary-codecs pulseaudio"
+IUSE+=" qt5 qt6 screencast selinux +system-toolchain vaapi wayland widevine"
+REQUIRED_USE="
+	!headless? ( || ( X wayland ) )
+	pgo? ( X !wayland )
+	qt6? ( qt5 )
+	screencast? ( wayland )
+	!system-toolchain? ( libcxx )
+"
+
+COMMON_X_DEPEND="
+	x11-libs/libXcomposite:=
+	x11-libs/libXcursor:=
+	x11-libs/libXdamage:=
+	x11-libs/libXfixes:=
+	>=x11-libs/libXi-1.6.0:=
+	x11-libs/libXrandr:=
+	x11-libs/libXrender:=
+	x11-libs/libXtst:=
+	x11-libs/libxshmfence:=
+"
+
+COMMON_SNAPSHOT_DEPEND="
+	system-icu? ( >=dev-libs/icu-71.1:= )
+	>=dev-libs/libxml2-2.12.4:=[icu]
+	dev-libs/nspr:=
+	>=dev-libs/nss-3.26:=
+	dev-libs/libxslt:=
+	media-libs/fontconfig:=
+	>=media-libs/freetype-2.11.0-r1:=
+	system-harfbuzz? ( >=media-libs/harfbuzz-3:0=[icu(-)] )
+	media-libs/libjpeg-turbo:=
+	system-png? ( media-libs/libpng:=[-apng(-)] )
+	system-zstd? ( >=app-arch/zstd-1.5.5:= )
+	>=media-libs/libwebp-0.4.0:=
+	media-libs/mesa:=[gbm(+)]
+	>=media-libs/openh264-1.6.0:=
+	sys-libs/zlib:=
+	x11-libs/libdrm:=
+	!headless? (
+		dev-libs/glib:2
+		>=media-libs/alsa-lib-1.0.19:=
+		pulseaudio? ( media-libs/libpulse:= )
+		sys-apps/pciutils:=
+		kerberos? ( virtual/krb5 )
+		vaapi? ( >=media-libs/libva-2.7:=[X?,wayland?] )
+		X? (
+			x11-libs/libX11:=
+			x11-libs/libXext:=
+			x11-libs/libxcb:=
+		)
+		x11-libs/libxkbcommon:=
+		wayland? (
+			dev-libs/libffi:=
+			dev-libs/wayland:=
+			screencast? ( media-video/pipewire:= )
+		)
+	)
+"
+
+COMMON_DEPEND="
+	${COMMON_SNAPSHOT_DEPEND}
+	app-arch/bzip2:=
+	dev-libs/expat:=
+	net-misc/curl[ssl]
+	sys-apps/dbus:=
+	media-libs/flac:=
+	sys-libs/zlib:=[minizip]
+	!headless? (
+		X? ( ${COMMON_X_DEPEND} )
+		>=app-accessibility/at-spi2-core-2.46.0:2
+		media-libs/mesa:=[X?,wayland?]
+		cups? ( >=net-print/cups-1.3.11:= )
+		virtual/udev
+		x11-libs/cairo:=
+		x11-libs/gdk-pixbuf:2
+		x11-libs/pango:=
+		qt5? (
+			dev-qt/qtcore:5
+			dev-qt/qtwidgets:5
+		)
+		qt6? ( dev-qt/qtbase:6[gui,widgets] )
+	)
+"
+RDEPEND="${COMMON_DEPEND}
+	!headless? (
+		|| (
+			x11-libs/gtk+:3[X?,wayland?]
+			gui-libs/gtk:4[X?,wayland?]
+		)
+		qt5? ( dev-qt/qtgui:5[X?,wayland?] )
+		qt6? ( dev-qt/qtbase:6[X?,wayland?] )
+	)
+	virtual/ttf-fonts
+	selinux? ( sec-policy/selinux-chromium )
+"
+DEPEND="${COMMON_DEPEND}
+	!headless? (
+		gtk4? ( gui-libs/gtk:4[X?,wayland?] )
+		!gtk4? ( x11-libs/gtk+:3[X?,wayland?] )
+	)
+"
+
+depend_clang_llvm_version() {
+	echo "sys-devel/clang:$1"
+	echo "sys-devel/llvm:$1"
+	echo "=sys-devel/lld-$1*"
+}
+
+# When passed multiple arguments we assume that
+# we want a range of versions, inclusive.
+depend_clang_llvm_versions() {
+	local _v
+	if [[ $# -eq 1 ]]; then
+		depend_clang_llvm_version "$1"
+	elif [[ $# -eq 2 ]]; then
+		if [[ $1 -eq $2 ]]; then
+			depend_clang_llvm_version "$1"
+		fi
+		echo "|| ("
+		for ((i=$1; i<=$2; i++)); do
+			echo "("
+			depend_clang_llvm_version "${i}"
+			echo ")"
+		done
+		echo ")"
+	else
+		die "depend_clang_llvm_versions() requires 1 or 2 arguments"
+	fi
+}
+
+# #923010 - add `profiler` USE to rust-bin
+BDEPEND="
+	${COMMON_SNAPSHOT_DEPEND}
+	${PYTHON_DEPS}
+	$(python_gen_any_dep '
+		dev-python/setuptools[${PYTHON_USEDEP}]
+	')
+	>=app-arch/gzip-1.7
+	!headless? (
+		qt5? ( dev-qt/qtcore:5 )
+		qt6? ( dev-qt/qtbase:6 )
+	)
+	system-toolchain? (
+		libcxx? ( >=sys-devel/clang-${LLVM_MIN_SLOT} )
+		lto? ( $(depend_clang_llvm_versions ${LLVM_MIN_SLOT} ${LLVM_MAX_SLOT}) )
+		pgo? (
+			>=dev-python/selenium-3.141.0
+			>=dev-util/web_page_replay_go-20220314
+			$(depend_clang_llvm_versions ${LLVM_MIN_SLOT} ${LLVM_MAX_SLOT})
+		)
+		>=dev-lang/rust-${RUST_MIN_VER}[profiler]
+	)
+	>=dev-build/gn-${GN_MIN_VER}
+	dev-lang/perl
+	>=dev-build/ninja-1.7.2
+	>=dev-util/gperf-3.0.3
+	dev-vcs/git
+	>=net-libs/nodejs-7.6.0[inspector]
+	>=sys-devel/bison-2.4.3
+	sys-devel/flex
+	virtual/pkgconfig
+"
+
+if [[ ${CHROMIUM_FORCE_CLANG} == yes ]]; then
+	BDEPEND+="system-toolchain? ( >=sys-devel/clang-${LLVM_MIN_SLOT} ) "
+fi
+
+if [[ ${CHROMIUM_FORCE_LLD} == yes ]]; then
+	BDEPEND+="system-toolchain? ( >=sys-devel/lld-${LLVM_MIN_SLOT} ) "
+else
+	# #918897: Hack for arm64
+	BDEPEND+=" arm64? ( >=sys-devel/lld-${LLVM_MIN_SLOT} )"
+fi
+
+if ! has chromium_pkg_die ${EBUILD_DEATH_HOOKS}; then
+	EBUILD_DEATH_HOOKS+=" chromium_pkg_die";
+fi
+
+DISABLE_AUTOFORMATTING="yes"
+DOC_CONTENTS="
+Some web pages may require additional fonts to display properly.
+Try installing some of the following packages if some characters
+are not displayed properly:
+- media-fonts/arphicfonts
+- media-fonts/droid
+- media-fonts/ipamonafont
+- media-fonts/noto
+- media-fonts/ja-ipafonts
+- media-fonts/takao-fonts
+- media-fonts/wqy-microhei
+- media-fonts/wqy-zenhei
+
+To fix broken icons on the Downloads page, you should install an icon
+theme that covers the appropriate MIME types, and configure this as your
+GTK+ icon theme.
+
+For native file dialogs in KDE, install kde-apps/kdialog.
+
+To make password storage work with your desktop environment you may
+have install one of the supported credentials management applications:
+- app-crypt/libsecret (GNOME)
+- kde-frameworks/kwallet (KDE)
+If you have one of above packages installed, but don't want to use
+them in Chromium, then add --password-store=basic to CHROMIUM_FLAGS
+in /etc/chromium/default.
+"
+
+python_check_deps() {
+	python_has_version "dev-python/setuptools[${PYTHON_USEDEP}]"
+}
+
+needs_clang() {
+	[[ ${CHROMIUM_FORCE_CLANG} == yes ]] || use libcxx || use lto || use pgo
+}
+
+needs_lld() {
+	# #641556: Force lld for lto and pgo builds, otherwise disable
+	# #918897: Temporary hack w/ use arm64
+	[[ ${CHROMIUM_FORCE_LLD} == yes ]] || use lto || use pgo || use arm64
+}
+
+llvm_check_deps() {
+	if ! has_version -b "sys-devel/clang:${LLVM_SLOT}" ; then
+		einfo "sys-devel/clang:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	if ( use lto || use pgo ) && ! has_version -b "=sys-devel/lld-${LLVM_SLOT}*" ; then
+		einfo "=sys-devel/lld-${LLVM_SLOT}* is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
+}
+
+pre_build_checks() {
+	# Check build requirements: bugs #471810, #541816, #914220
+	# We're going to start doing maths here on the size of an unpacked source tarball,
+	# this should make updates easier as chromium continues to balloon in size.
+	local BASE_DISK=18
+	local EXTRA_DISK=1
+	local CHECKREQS_MEMORY="4G"
+	tc-is-cross-compiler && EXTRA_DISK=2
+	if use lto || use pgo; then
+		CHECKREQS_MEMORY="9G"
+		tc-is-cross-compiler && EXTRA_DISK=4
+		use pgo && EXTRA_DISK=8
+	fi
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		if use custom-cflags; then
+			EXTRA_DISK=13
+		fi
+		CHECKREQS_MEMORY="16G"
+	fi
+	CHECKREQS_DISK_BUILD="$((BASE_DISK + EXTRA_DISK))G"
+	check-reqs_${EBUILD_PHASE_FUNC}
+}
+
+pkg_pretend() {
+	pre_build_checks
+
+	if use headless; then
+		local headless_unused_flags=("cups" "kerberos" "pulseaudio" "qt5" "qt6" "vaapi" "wayland")
+		for myiuse in ${headless_unused_flags[@]}; do
+			use ${myiuse} && ewarn "Ignoring USE=${myiuse} since USE=headless is set."
+		done
+	fi
+}
+
+pkg_setup() {
+	if use system-toolchain && needs_clang; then
+		llvm_pkg_setup
+	fi
+
+	pre_build_checks
+
+	if [[ ${MERGE_TYPE} != binary ]] && use system-toolchain; then
+		local -x CPP="$(tc-getCXX) -E"
+		if tc-is-gcc && ! ver_test "$(gcc-version)" -ge ${GCC_MIN_VER}; then
+			die "At least gcc ${GCC_MIN_VER} is required"
+		fi
+		if use pgo && tc-is-cross-compiler; then
+			die "The pgo USE flag cannot be used when cross-compiling"
+		fi
+		if needs_clang && ! tc-is-clang; then
+			if tc-is-cross-compiler; then
+				CPP="${CBUILD}-clang++ -E"
+			else
+				CPP="${CHOST}-clang++ -E"
+			fi
+			if ver_test "$(clang-major-version)" -lt ${LLVM_MIN_SLOT}; then
+				die "At least Clang ${LLVM_MIN_SLOT} is required"
+			fi
+		fi
+		# Users should never hit this, it's purely a development convenience
+		if ver_test $(gn --version || die) -lt ${GN_MIN_VER}; then
+				die "dev-util/gn >= ${GN_MIN_VER} is required to build this Chromium"
+		fi
+	fi
+
+	chromium_suid_sandbox_check_kernel_config
+}
+
+src_prepare() {
+	# Calling this here supports resumption via FEATURES=keepwork
+	python_setup
+
+	# disable global media controls, crashes with libstdc++
+	sed -i -e \
+		"/\"GlobalMediaControlsCastStartStop\"/,+4{s/ENABLED/DISABLED/;}" \
+		"chrome/browser/media/router/media_router_feature.cc" || die
+
+	local PATCHES=(
+		"${FILESDIR}/chromium-cross-compile.patch"
+		"${FILESDIR}/chromium-use-oauth2-client-switches-as-default.patch"
+		"${FILESDIR}/chromium-108-EnumTable-crash.patch"
+		"${FILESDIR}/chromium-109-system-zlib.patch"
+		"${FILESDIR}/chromium-111-InkDropHost-crash.patch"
+		"${FILESDIR}/chromium-117-system-zstd.patch"
+	)
+
+	if use system-toolchain; then
+		# The patchset is really only required if we're not using the system-toolchain
+		PATCHES+=( "${WORKDIR}/chromium-patches-${PATCH_V}" )
+		# We can't use the bundled compiler builtins
+		sed -i -e \
+			"/if (is_clang && toolchain_has_rust) {/,+2d" \
+			build/config/compiler/BUILD.gn || die "Failed to disable bundled compiler builtins"
+	else
+		mkdir -p third_party/llvm-build/Release+Asserts || die "Failed to bundle llvm"
+		ln -s "${WORKDIR}"/bin third_party/llvm-build/Release+Asserts/bin || die "Failed to symlink llvm bin"
+		ln -s "${WORKDIR}"/lib third_party/llvm-build/Release+Asserts/lib || die "Failed to symlink llvm lib"
+		echo "${GOOGLE_CLANG_VER}" > third_party/llvm-build/Release+Asserts/cr_build_revision || \
+			die "Failed to set clang version"
+		ln -s "${WORKDIR}"/rust-toolchain third_party/rust-toolchain || die "Failed to bundle rust"
+		cp "${WORKDIR}"/rust-toolchain/VERSION \
+			"${WORKDIR}"/rust-toolchain/INSTALLED_VERSION || die "Failed to set rust version"
+	fi
+
+	if use ppc64 ; then
+		local p
+		for p in $(grep -v "^#" "${WORKDIR}"/debian/patches/series | grep "^ppc64le" || die); do
+			if [[ ! $p =~ "fix-breakpad-compile.patch" ]]; then
+				eapply "${WORKDIR}/debian/patches/${p}"
+			fi
+		done
+		PATCHES+=( "${WORKDIR}/ppc64le" )
+	fi
+
+	if has_version ">=dev-libs/icu-74.1" && use system-icu ; then
+		PATCHES+=( "${FILESDIR}/chromium-119.0.6045.159-icu-74.patch" )
+	fi
+
+	default
+
+	mkdir -p third_party/node/linux/node-linux-x64/bin || die
+	ln -s "${EPREFIX}"/usr/bin/node third_party/node/linux/node-linux-x64/bin/node || die
+
+	# adjust python interpreter version
+	sed -i -e "s|\(^script_executable = \).*|\1\"${EPYTHON}\"|g" .gn || die
+
+	local keeplibs=(
+		base/third_party/cityhash
+		base/third_party/double_conversion
+		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_user_dirs
+		buildtools/third_party/libc++
+		buildtools/third_party/libc++abi
+		chrome/third_party/mozilla_security_manager
+		courgette/third_party
+		net/third_party/mozilla_security_manager
+		net/third_party/nss
+		net/third_party/quic
+		net/third_party/uri_template
+		third_party/abseil-cpp
+		third_party/angle
+		third_party/angle/src/common/third_party/xxhash
+		third_party/angle/src/third_party/ceval
+		third_party/angle/src/third_party/libXNVCtrl
+		third_party/angle/src/third_party/volk
+		third_party/anonymous_tokens
+		third_party/apple_apsl
+		third_party/axe-core
+		third_party/blink
+		third_party/bidimapper
+		third_party/boringssl
+		third_party/boringssl/src/third_party/fiat
+		third_party/breakpad
+		third_party/breakpad/breakpad/src/third_party/curl
+		third_party/brotli
+		third_party/catapult
+		third_party/catapult/common/py_vulcanize/third_party/rcssmin
+		third_party/catapult/common/py_vulcanize/third_party/rjsmin
+		third_party/catapult/third_party/beautifulsoup4-4.9.3
+		third_party/catapult/third_party/html5lib-1.1
+		third_party/catapult/third_party/polymer
+		third_party/catapult/third_party/six
+		third_party/catapult/tracing/third_party/d3
+		third_party/catapult/tracing/third_party/gl-matrix
+		third_party/catapult/tracing/third_party/jpeg-js
+		third_party/catapult/tracing/third_party/jszip
+		third_party/catapult/tracing/third_party/mannwhitneyu
+		third_party/catapult/tracing/third_party/oboe
+		third_party/catapult/tracing/third_party/pako
+		third_party/ced
+		third_party/cld_3
+		third_party/closure_compiler
+		third_party/content_analysis_sdk
+		third_party/cpuinfo
+		third_party/crashpad
+		third_party/crashpad/crashpad/third_party/lss
+		third_party/crashpad/crashpad/third_party/zlib
+		third_party/crc32c
+		third_party/cros_system_api
+		third_party/d3
+		third_party/dav1d
+		third_party/dawn
+		third_party/dawn/third_party/gn/webgpu-cts
+		third_party/dawn/third_party/khronos
+		third_party/depot_tools
+		third_party/devscripts
+		third_party/devtools-frontend
+		third_party/devtools-frontend/src/front_end/third_party/acorn
+		third_party/devtools-frontend/src/front_end/third_party/additional_readme_paths.json
+		third_party/devtools-frontend/src/front_end/third_party/axe-core
+		third_party/devtools-frontend/src/front_end/third_party/chromium
+		third_party/devtools-frontend/src/front_end/third_party/codemirror
+		third_party/devtools-frontend/src/front_end/third_party/csp_evaluator
+		third_party/devtools-frontend/src/front_end/third_party/diff
+		third_party/devtools-frontend/src/front_end/third_party/i18n
+		third_party/devtools-frontend/src/front_end/third_party/intl-messageformat
+		third_party/devtools-frontend/src/front_end/third_party/lighthouse
+		third_party/devtools-frontend/src/front_end/third_party/lit
+		third_party/devtools-frontend/src/front_end/third_party/lodash-isequal
+		third_party/devtools-frontend/src/front_end/third_party/marked
+		third_party/devtools-frontend/src/front_end/third_party/puppeteer
+		third_party/devtools-frontend/src/front_end/third_party/puppeteer/package/lib/esm/third_party/mitt
+		third_party/devtools-frontend/src/front_end/third_party/puppeteer/package/lib/esm/third_party/rxjs
+		third_party/devtools-frontend/src/front_end/third_party/vscode.web-custom-data
+		third_party/devtools-frontend/src/front_end/third_party/wasmparser
+		third_party/devtools-frontend/src/test/unittests/front_end/third_party/i18n
+		third_party/devtools-frontend/src/third_party
+		third_party/distributed_point_functions
+		third_party/dom_distiller_js
+		third_party/eigen3
+		third_party/emoji-segmenter
+		third_party/farmhash
+		third_party/fdlibm
+		third_party/ffmpeg
+		third_party/fft2d
+		third_party/flatbuffers
+		third_party/fp16
+		third_party/freetype
+		third_party/fusejs
+		third_party/fxdiv
+		third_party/highway
+		third_party/liburlpattern
+		third_party/libzip
+		third_party/lit
+		third_party/gemmlowp
+		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/googletest
+		third_party/hunspell
+		third_party/iccjpeg
+		third_party/inspector_protocol
+		third_party/ipcz
+		third_party/jinja2
+		third_party/jsoncpp
+		third_party/jstemplate
+		third_party/khronos
+		third_party/leveldatabase
+		third_party/libaddressinput
+		third_party/libaom
+		third_party/libaom/source/libaom/third_party/fastfeat
+		third_party/libaom/source/libaom/third_party/SVT-AV1
+		third_party/libaom/source/libaom/third_party/vector
+		third_party/libaom/source/libaom/third_party/x86inc
+		third_party/libavif
+		third_party/libevent
+		third_party/libgav1
+		third_party/libjingle
+		third_party/libphonenumber
+		third_party/libsecret
+		third_party/libsrtp
+		third_party/libsync
+		third_party/libudev
+		third_party/libva_protected_content
+		third_party/libvpx
+		third_party/libvpx/source/libvpx/third_party/x86inc
+		third_party/libwebm
+		third_party/libx11
+		third_party/libxcb-keysyms
+		third_party/libxml/chromium
+		third_party/libyuv
+		third_party/lottie
+		third_party/lss
+		third_party/lzma_sdk
+		third_party/mako
+		third_party/maldoca
+		third_party/maldoca/src/third_party/tensorflow_protos
+		third_party/maldoca/src/third_party/zlibwrapper
+		third_party/markupsafe
+		third_party/material_color_utilities
+		third_party/mesa
+		third_party/metrics_proto
+		third_party/minigbm
+		third_party/modp_b64
+		third_party/nasm
+		third_party/nearby
+		third_party/neon_2_sse
+		third_party/node
+		third_party/omnibox_proto
+		third_party/one_euro_filter
+		third_party/openscreen
+		third_party/openscreen/src/third_party/
+		third_party/openscreen/src/third_party/tinycbor/src/src
+		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/lcms
+		third_party/pdfium/third_party/libopenjpeg
+		third_party/pdfium/third_party/libtiff
+		third_party/perfetto
+		third_party/perfetto/protos/third_party/chromium
+		third_party/pffft
+		third_party/ply
+		third_party/polymer
+		third_party/private-join-and-compute
+		third_party/private_membership
+		third_party/protobuf
+		third_party/pthreadpool
+		third_party/puffin
+		third_party/pyjson5
+		third_party/pyyaml
+		third_party/qcms
+		third_party/re2
+		third_party/rnnoise
+		third_party/rust
+		third_party/s2cellid
+		third_party/securemessage
+		third_party/selenium-atoms
+		third_party/shell-encryption
+		third_party/simplejson
+		third_party/skia
+		third_party/skia/include/third_party/vulkan
+		third_party/skia/third_party/vulkan
+		third_party/smhasher
+		third_party/snappy
+		third_party/sqlite
+		third_party/swiftshader
+		third_party/swiftshader/third_party/astc-encoder
+		third_party/swiftshader/third_party/llvm-subzero
+		third_party/swiftshader/third_party/marl
+		third_party/swiftshader/third_party/subzero
+		third_party/swiftshader/third_party/SPIRV-Headers/include/spirv
+		third_party/swiftshader/third_party/SPIRV-Tools
+		third_party/tensorflow_models
+		third_party/tensorflow-text
+		third_party/tflite
+		third_party/tflite/src/third_party/eigen3
+		third_party/tflite/src/third_party/fft2d
+		third_party/tflite/src/third_party/xla/third_party/tsl
+		third_party/ruy
+		third_party/six
+		third_party/ukey2
+		third_party/unrar
+		third_party/utf
+		third_party/vulkan
+		third_party/wayland
+		third_party/webdriver
+		third_party/webgpu-cts
+		third_party/webrtc
+		third_party/webrtc/common_audio/third_party/ooura
+		third_party/webrtc/common_audio/third_party/spl_sqrt_floor
+		third_party/webrtc/modules/third_party/fft
+		third_party/webrtc/modules/third_party/g711
+		third_party/webrtc/modules/third_party/g722
+		third_party/webrtc/rtc_base/third_party/base64
+		third_party/webrtc/rtc_base/third_party/sigslot
+		third_party/widevine
+		third_party/woff2
+		third_party/wuffs
+		third_party/x11proto
+		third_party/xcbproto
+		third_party/xnnpack
+		third_party/zxcvbn-cpp
+		third_party/zlib/google
+		url/third_party/mozilla
+		v8/src/third_party/siphash
+		v8/src/third_party/valgrind
+		v8/src/third_party/utf8-decoder
+		v8/third_party/glibc
+		v8/third_party/inspector_protocol
+		v8/third_party/v8
+
+		# gyp -> gn leftovers
+		third_party/speech-dispatcher
+		third_party/usb_ids
+		third_party/xdg-utils
+	)
+
+	# USE=system-*
+	if ! use system-harfbuzz; then
+		keeplibs+=( third_party/harfbuzz-ng )
+	fi
+
+	if ! use system-icu; then
+		keeplibs+=( third_party/icu )
+	fi
+
+	if ! use system-png; then
+		keeplibs+=( third_party/libpng )
+	fi
+
+	if ! use system-zstd; then
+		keeplibs+=( third_party/zstd )
+	fi
+
+	if use libcxx || [[ ${CHROMIUM_FORCE_LIBCXX} == yes ]]; then
+		keeplibs+=( third_party/libc++ )
+	fi
+
+	if ! use system-toolchain || [[ ${CHROMIUM_FORCE_GOOGLE_TOOLCHAIN} == yes ]]; then
+			keeplibs+=( third_party/llvm )
+	fi
+
+	# Arch-specific
+	if use arm64 || use ppc64 ; then
+		keeplibs+=( third_party/swiftshader/third_party/llvm-10.0 )
+	fi
+	# we need to generate ppc64 stuff because upstream does not ship it yet
+	# it has to be done before unbundling.
+	if use ppc64; then
+		pushd third_party/libvpx >/dev/null || die
+		mkdir -p source/config/linux/ppc64 || die
+		# requires git and clang, bug #832803
+		sed -i -e "s|^update_readme||g; s|clang-format|${EPREFIX}/bin/true|g" \
+			generate_gni.sh || die
+		./generate_gni.sh || die
+		popd >/dev/null || die
+
+		pushd third_party/ffmpeg >/dev/null || die
+		cp libavcodec/ppc/h264dsp.c libavcodec/ppc/h264dsp_ppc.c || die
+		cp libavcodec/ppc/h264qpel.c libavcodec/ppc/h264qpel_ppc.c || die
+		popd >/dev/null || die
+	fi
+
+	einfo "Unbundling third-party libraries ..."
+	# Remove most bundled libraries. Some are still needed.
+	build/linux/unbundle/remove_bundled_libraries.py "${keeplibs[@]}" --do-remove || die
+
+	# bundled eu-strip is for amd64 only and we don't want to pre-stripped binaries
+	mkdir -p buildtools/third_party/eu-strip/bin || die
+	ln -s "${EPREFIX}"/bin/true buildtools/third_party/eu-strip/bin/eu-strip || die
+}
+
+chromium_rust_version_check() {
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_version=( $(eselect --brief rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	echo $rustc_version
+}
+
+chromium_configure() {
+	# Calling this here supports resumption via FEATURES=keepwork
+	python_setup
+
+	local myconf_gn=""
+
+	if use system-toolchain && [[ ${CHROMIUM_FORCE_GOOGLE_TOOLCHAIN} == no ]]; then
+		# Make sure the build system will use the right tools, bug #340795.
+		tc-export AR CC CXX NM
+
+		if needs_clang && ! tc-is-clang; then
+			# Force clang since gcc is either broken or build is using libcxx.
+			if tc-is-cross-compiler; then
+				CC="${CBUILD}-clang -target ${CHOST} --sysroot ${ESYSROOT}"
+				CXX="${CBUILD}-clang++ -target ${CHOST} --sysroot ${ESYSROOT}"
+				BUILD_CC=${CBUILD}-clang
+				BUILD_CXX=${CBUILD}-clang++
+			else
+				CC=${CHOST}-clang
+				CXX=${CHOST}-clang++
+			fi
+			strip-unsupported-flags
+		fi
+
+		if tc-is-clang; then
+			myconf_gn+=" is_clang=true clang_use_chrome_plugins=false"
+		else
+			myconf_gn+=" is_clang=false"
+		fi
+
+		if needs_lld ; then
+			# https://bugs.gentoo.org/918897#c32
+			append-ldflags -Wl,--undefined-version
+			myconf_gn+=" use_lld=true"
+		else
+			# This doesn't prevent lld from being used, but rather prevents gn from forcing it
+			myconf_gn+=" use_lld=false"
+		fi
+
+		if use lto; then
+			AR=llvm-ar
+			NM=llvm-nm
+			if tc-is-cross-compiler; then
+				BUILD_AR=llvm-ar
+				BUILD_NM=llvm-nm
+			fi
+		fi
+
+		myconf_gn+=" custom_toolchain=\"//build/toolchain/linux/unbundle:default\""
+
+		if tc-is-cross-compiler; then
+			tc-export BUILD_{AR,CC,CXX,NM}
+			myconf_gn+=" host_toolchain=\"//build/toolchain/linux/unbundle:host\""
+			myconf_gn+=" v8_snapshot_toolchain=\"//build/toolchain/linux/unbundle:host\""
+			myconf_gn+=" pkg_config=\"$(tc-getPKG_CONFIG)\""
+			myconf_gn+=" host_pkg_config=\"$(tc-getBUILD_PKG_CONFIG)\""
+
+			# setup cups-config, build system only uses --libs option
+			if use cups; then
+				mkdir "${T}/cups-config" || die
+				cp "${ESYSROOT}/usr/bin/${CHOST}-cups-config" "${T}/cups-config/cups-config" || die
+				export PATH="${PATH}:${T}/cups-config"
+			fi
+
+			# Don't inherit PKG_CONFIG_PATH from environment
+			local -x PKG_CONFIG_PATH=
+		else
+			myconf_gn+=" host_toolchain=\"//build/toolchain/linux/unbundle:default\""
+		fi
+
+		local rustc_ver
+		rustc_ver=$(chromium_rust_version_check)
+		if ver_test "${rustc_ver}" -lt "${RUST_MIN_VER}"; then
+			eerror "Rust >=${RUST_MIN_VER} is required"
+			eerror "Please run 'eselect rust' and select the correct rust version"
+			die "Selected rust version is too old"
+		else
+			einfo "Using rust ${rustc_ver} to build"
+		fi
+		myconf_gn+=" rust_sysroot_absolute=\"${EPREFIX}/usr/lib/rust/${rustc_ver}/\""
+		myconf_gn+=" rustc_version=\"${rustc_ver}\""
+	fi
+
+	# GN needs explicit config for Debug/Release as opposed to inferring it from build directory.
+	myconf_gn+=" is_debug=false"
+
+	# enable DCHECK with USE=debug only, increases chrome binary size by 30%, bug #811138.
+	# DCHECK is fatal by default, make it configurable at runtime, #bug 807881.
+	myconf_gn+=" dcheck_always_on=$(usex debug true false)"
+	myconf_gn+=" dcheck_is_configurable=$(usex debug true false)"
+
+	# Component build isn't generally intended for use by end users. It's mostly useful
+	# for development and debugging.
+	myconf_gn+=" is_component_build=false"
+
+	# Disable nacl, we can't build without pnacl (http://crbug.com/269560).
+	myconf_gn+=" enable_nacl=false"
+
+	# Use system-provided libraries.
+	# TODO: freetype -- remove sources (https://bugs.chromium.org/p/pdfium/issues/detail?id=733).
+	# TODO: use_system_hunspell (upstream changes needed).
+	# TODO: use_system_protobuf (bug #525560).
+	# TODO: use_system_sqlite (http://crbug.com/22208).
+
+	# libevent: https://bugs.gentoo.org/593458
+	local gn_system_libraries=(
+		flac
+		fontconfig
+		freetype
+		# Need harfbuzz_from_pkgconfig target
+		#harfbuzz-ng
+		libdrm
+		libjpeg
+		libwebp
+		libxml
+		libxslt
+		openh264
+		zlib
+	)
+	if use system-icu; then
+		gn_system_libraries+=( icu )
+	fi
+	if use system-png; then
+		gn_system_libraries+=( libpng )
+	fi
+	if use system-zstd; then
+		gn_system_libraries+=( zstd )
+	fi
+
+	build/linux/unbundle/replace_gn_files.py --system-libraries "${gn_system_libraries[@]}" || die
+
+	# See dependency logic in third_party/BUILD.gn
+	myconf_gn+=" use_system_harfbuzz=$(usex system-harfbuzz true false)"
+
+	# Optional dependencies.
+	myconf_gn+=" enable_hangout_services_extension=$(usex hangouts true false)"
+	myconf_gn+=" enable_widevine=$(usex widevine true false)"
+
+	if use headless; then
+		myconf_gn+=" use_cups=false"
+		myconf_gn+=" use_kerberos=false"
+		myconf_gn+=" use_pulseaudio=false"
+		myconf_gn+=" use_vaapi=false"
+		myconf_gn+=" rtc_use_pipewire=false"
+	else
+		myconf_gn+=" use_cups=$(usex cups true false)"
+		myconf_gn+=" use_kerberos=$(usex kerberos true false)"
+		myconf_gn+=" use_pulseaudio=$(usex pulseaudio true false)"
+		myconf_gn+=" use_vaapi=$(usex vaapi true false)"
+		myconf_gn+=" rtc_use_pipewire=$(usex screencast true false)"
+		myconf_gn+=" gtk_version=$(usex gtk4 4 3)"
+	fi
+
+	# Allows distributions to link pulseaudio directly (DT_NEEDED) instead of
+	# using dlopen. This helps with automated detection of ABI mismatches and
+	# prevents silent errors.
+	if use pulseaudio; then
+		myconf_gn+=" link_pulseaudio=true"
+	fi
+
+	# Non-developer builds of Chromium (for example, non-Chrome browsers, or
+	# Chromium builds provided by Linux distros) should disable the testing config
+	myconf_gn+=" disable_fieldtrial_testing_config=true"
+
+	if use system-toolchain; then
+		myconf_gn+=" use_gold=false"
+	fi
+
+	# The sysroot is the oldest debian image that chromium supports, we don't need it
+	myconf_gn+=" use_sysroot=false"
+
+	# This determines whether or not GN uses the bundled libcxx
+	# default: true
+	if use libcxx || [[ ${CHROMIUM_FORCE_LIBCXX} == yes ]]; then
+		myconf_gn+=" use_custom_libcxx=true"
+	else
+		myconf_gn+=" use_custom_libcxx=false"
+	fi
+
+	# Disable pseudolocales, only used for testing
+	myconf_gn+=" enable_pseudolocales=false"
+
+	# Disable code formating of generated files
+	myconf_gn+=" blink_enable_generated_code_formatting=false"
+
+	ffmpeg_branding="$(usex proprietary-codecs Chrome Chromium)"
+	myconf_gn+=" proprietary_codecs=$(usex proprietary-codecs true false)"
+	myconf_gn+=" ffmpeg_branding=\"${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. The OAuth2 credentials, however, have been left out.
+	# Those OAuth2 credentials have been broken for quite some time anyway.
+	# Instead we apply a patch to use the --oauth2-client-id= and
+	# --oauth2-client-secret= switches for setting GOOGLE_DEFAULT_CLIENT_ID and
+	# GOOGLE_DEFAULT_CLIENT_SECRET at runtime. This allows signing into
+	# Chromium without baked-in values.
+	local google_api_key="AIzaSyDEAOvatFo0eTgsV_ZlEzx0ObmepsMzfAc"
+	myconf_gn+=" google_api_key=\"${google_api_key}\""
+	local myarch="$(tc-arch)"
+
+	# Avoid CFLAGS problems, bug #352457, bug #390147.
+	if ! use custom-cflags; then
+		replace-flags "-Os" "-O2"
+		strip-flags
+
+		# Debug info section overflows without component build
+		# Prevent linker from running out of address space, bug #471810 .
+		filter-flags "-g*"
+
+		# Prevent libvpx/xnnpack build failures. Bug 530248, 544702, 546984, 853646.
+		if [[ ${myarch} == amd64 ]]; then
+			filter-flags -mno-mmx -mno-sse2 -mno-ssse3 -mno-sse4.1 -mno-avx -mno-avx2 -mno-fma -mno-fma4 -mno-xop -mno-sse4a
+		fi
+
+		if tc-is-gcc; then
+			# https://bugs.gentoo.org/904455
+			local -x CPP="$(tc-getCXX) -E"
+			# https://bugs.gentoo.org/912381
+			filter-lto
+		fi
+	fi
+
+	if [[ $myarch = amd64 ]] ; then
+		myconf_gn+=" target_cpu=\"x64\""
+		ffmpeg_target_arch=x64
+	elif [[ $myarch = arm64 ]] ; then
+		myconf_gn+=" target_cpu=\"arm64\""
+		ffmpeg_target_arch=arm64
+	elif [[ $myarch = ppc64 ]] ; then
+		myconf_gn+=" target_cpu=\"ppc64\""
+		ffmpeg_target_arch=ppc64
+	else
+		die "Failed to determine target arch, got '$myarch'."
+	fi
+
+	# 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_gn+=" treat_warnings_as_errors=false"
+
+	# Disable fatal linker warnings, bug 506268.
+	myconf_gn+=" fatal_linker_warnings=false"
+
+	# Disable external code space for V8 for ppc64. It is disabled for ppc64
+	# by default, but cross-compiling on amd64 enables it again.
+	if tc-is-cross-compiler; then
+		if ! use amd64 && ! use arm64; then
+			myconf_gn+=" v8_enable_external_code_space=false"
+		fi
+	fi
+
+	# Only enabled for clang, but gcc has endian macros too
+	myconf_gn+=" v8_use_libm_trig_functions=true"
+
+	# Bug 491582.
+	export TMPDIR="${WORKDIR}/temp"
+	mkdir -p -m 755 "${TMPDIR}" || die
+
+	# https://bugs.gentoo.org/654216
+	addpredict /dev/dri/ #nowarn
+
+	# Disable unknown warning message from clang.
+	if tc-is-clang; then
+		append-flags -Wno-unknown-warning-option
+		if tc-is-cross-compiler; then
+			export BUILD_CXXFLAGS+=" -Wno-unknown-warning-option"
+			export BUILD_CFLAGS+=" -Wno-unknown-warning-option"
+		fi
+	fi
+
+	# Explicitly disable ICU data file support for system-icu/headless builds.
+	if use system-icu || use headless; then
+		myconf_gn+=" icu_use_data_file=false"
+	fi
+
+	# Don't need nocompile checks and GN crashes with our config
+	myconf_gn+=" enable_nocompile_tests=false"
+
+	# Enable ozone wayland and/or headless support
+	myconf_gn+=" use_ozone=true ozone_auto_platforms=false"
+	myconf_gn+=" ozone_platform_headless=true"
+	if use headless; then
+		myconf_gn+=" ozone_platform=\"headless\""
+		myconf_gn+=" use_xkbcommon=false use_gtk=false use_qt=false"
+		myconf_gn+=" use_glib=false use_gio=false"
+		myconf_gn+=" use_pangocairo=false use_alsa=false"
+		myconf_gn+=" use_libpci=false use_udev=false"
+		myconf_gn+=" enable_print_preview=false"
+		myconf_gn+=" enable_remoting=false"
+	else
+		myconf_gn+=" use_system_libdrm=true"
+		myconf_gn+=" use_system_minigbm=true"
+		myconf_gn+=" use_xkbcommon=true"
+		if use qt5 || use qt6; then
+			local cbuild_libdir=$(get_libdir)
+			if tc-is-cross-compiler; then
+				# Hack to workaround get_libdir not being able to handle CBUILD, bug #794181
+				local cbuild_libdir=$($(tc-getBUILD_PKG_CONFIG) --keep-system-libs --libs-only-L libxslt)
+				cbuild_libdir=${cbuild_libdir:2}
+				cbuild_libdir=${cbuild_libdir/% }
+			fi
+			if use qt5; then
+				if tc-is-cross-compiler; then
+					myconf_gn+=" moc_qt5_path=\"${EPREFIX}/${cbuild_libdir}/qt5/bin\""
+				else
+					myconf_gn+=" moc_qt5_path=\"$(qt5_get_bindir)\""
+				fi
+			fi
+			if use qt6; then
+				myconf_gn+=" moc_qt6_path=\"${EPREFIX}/usr/${cbuild_libdir}/qt6/libexec\""
+			fi
+
+			myconf_gn+=" use_qt=true"
+			myconf_gn+=" use_qt6=$(usex qt6 true false)"
+		else
+			myconf_gn+=" use_qt=false"
+		fi
+		myconf_gn+=" ozone_platform_x11=$(usex X true false)"
+		myconf_gn+=" ozone_platform_wayland=$(usex wayland true false)"
+		myconf_gn+=" ozone_platform=$(usex wayland \"wayland\" \"x11\")"
+		use wayland && myconf_gn+=" use_system_libffi=true"
+	fi
+
+	# Results in undefined references in chrome linking, may require CFI to work
+	if use arm64; then
+		myconf_gn+=" arm_control_flow_integrity=\"none\""
+	fi
+
+	# Enable official builds
+	myconf_gn+=" is_official_build=$(usex official true false)"
+	myconf_gn+=" use_thin_lto=$(usex lto true false)"
+	myconf_gn+=" thin_lto_enable_optimizations=$(usex lto true false)"
+	if use official; then
+		# Allow building against system libraries in official builds
+		sed -i 's/OFFICIAL_BUILD/GOOGLE_CHROME_BUILD/' \
+			tools/generate_shim_headers/generate_shim_headers.py || die
+		# Disable CFI: unsupported for GCC, requires clang+lto+lld
+		myconf_gn+=" is_cfi=false"
+		# Don't add symbols to build
+		myconf_gn+=" symbol_level=0"
+	fi
+
+	if use pgo; then
+		myconf_gn+=" chrome_pgo_phase=${1}"
+		if [[ "$1" == "2" ]]; then
+			myconf_gn+=" pgo_data_path=\"${2}\""
+		fi
+	else
+		# Disable PGO
+		myconf_gn+=" chrome_pgo_phase=0"
+	fi
+
+	# user CXXFLAGS might overwrite -march=armv8-a+crc+crypto, bug #851639
+	if use arm64 && tc-is-gcc; then
+		sed -i '/^#if HAVE_ARM64_CRC32C/a #pragma GCC target ("+crc+crypto")' \
+			third_party/crc32c/src/src/crc32c_arm64.cc || die
+	fi
+
+	# skipping typecheck is only supported on amd64, bug #876157
+	if ! use amd64; then
+		myconf_gn+=" devtools_skip_typecheck=false"
+	fi
+
+	einfo "Configuring Chromium ..."
+	set -- gn gen --args="${myconf_gn} ${EXTRA_GN}" out/Release
+	echo "$@"
+	"$@" || die
+}
+
+src_configure() {
+	chromium_configure $(usex pgo 1 0)
+}
+
+chromium_compile() {
+	# Final link uses lots of file descriptors.
+	ulimit -n 2048
+
+	# Calling this here supports resumption via FEATURES=keepwork
+	python_setup
+
+	# Don't inherit PYTHONPATH from environment, bug #789021, #812689
+	local -x PYTHONPATH=
+
+	# Build mksnapshot and pax-mark it.
+	if use pax-kernel; then
+		local x
+		for x in mksnapshot v8_context_snapshot_generator; do
+			if tc-is-cross-compiler; then
+				eninja -C out/Release "host/${x}"
+				pax-mark m "out/Release/host/${x}"
+			else
+				eninja -C out/Release "${x}"
+				pax-mark m "out/Release/${x}"
+			fi
+		done
+	fi
+
+	# Even though ninja autodetects number of CPUs, we respect
+	# user's options, for debugging with -j 1 or any other reason.
+	eninja -C out/Release chrome chromedriver chrome_sandbox
+
+	pax-mark m out/Release/chrome
+
+	if ! use system-toolchain; then
+		QA_FLAGS_IGNORED="
+			usr/lib64/chromium-browser/chrome
+			usr/lib64/chromium-browser/chrome-sandbox
+			usr/lib64/chromium-browser/chromedriver
+			usr/lib64/chromium-browser/chrome_crashpad_handler
+			usr/lib64/chromium-browser/libEGL.so
+			usr/lib64/chromium-browser/libGLESv2.so
+			usr/lib64/chromium-browser/libVkICD_mock_icd.so
+			usr/lib64/chromium-browser/libVkLayer_khronos_validation.so
+			usr/lib64/chromium-browser/libqt5_shim.so
+			usr/lib64/chromium-browser/libvk_swiftshader.so
+			usr/lib64/chromium-browser/libvulkan.so.1
+		"
+	fi
+}
+
+# This function is called from virtx, and must always return so that Xvfb
+# session isn't left running. If we return 1, virtx will call die().
+chromium_profile() {
+	einfo "Profiling for PGO"
+
+	pushd "${WORKDIR}/chromium-profiler-"* >/dev/null || return 1
+
+	# Remove old profdata in case profiling was interrupted.
+	rm -rf "${1}" || return 1
+
+	if ! "${EPYTHON}" ./chromium_profiler.py \
+		--chrome-executable "${S}/out/Release/chrome" \
+		--chromedriver-executable "${S}/out/Release/chromedriver.unstripped" \
+		--add-arg no-sandbox --add-arg disable-dev-shm-usage \
+		--profile-output "${1}"; then
+		eerror "Profiling failed"
+		return 1
+	fi
+
+	popd >/dev/null || return 1
+}
+
+src_compile() {
+	if use pgo; then
+		local profdata
+
+		profdata="${WORKDIR}/chromium.profdata"
+
+		if [[ ! -e "${WORKDIR}/.pgo-profiled" ]]; then
+			chromium_compile
+			virtx chromium_profile "$profdata"
+
+			touch "${WORKDIR}/.pgo-profiled" || die
+		fi
+
+		if [[ ! -e "${WORKDIR}/.pgo-phase-2-configured" ]]; then
+			# Remove phase 1 output
+			rm -r out/Release || die
+
+			chromium_configure 2 "$profdata"
+
+			touch "${WORKDIR}/.pgo-phase-2-configured" || die
+		fi
+
+		if [[ ! -e "${WORKDIR}/.pgo-phase-2-compiled" ]]; then
+			chromium_compile
+			touch "${WORKDIR}/.pgo-phase-2-compiled" || die
+		fi
+	else
+		chromium_compile
+	fi
+
+	mv out/Release/chromedriver{.unstripped,} || die
+
+	rm -f out/Release/locales/*.pak.info || die
+
+	# Build manpage; bug #684550
+	sed -e 's|@@PACKAGE@@|chromium-browser|g;
+		s|@@MENUNAME@@|Chromium|g;' \
+		chrome/app/resources/manpage.1.in > \
+		out/Release/chromium-browser.1 || die
+
+	# Build desktop file; bug #706786
+	sed -e 's|@@MENUNAME@@|Chromium|g;
+		s|@@USR_BIN_SYMLINK_NAME@@|chromium-browser|g;
+		s|@@PACKAGE@@|chromium-browser|g;
+		s|\(^Exec=\)/usr/bin/|\1|g;' \
+		chrome/installer/linux/common/desktop.template > \
+		out/Release/chromium-browser-chromium.desktop || die
+
+	# Build vk_swiftshader_icd.json; bug #827861
+	sed -e 's|${ICD_LIBRARY_PATH}|./libvk_swiftshader.so|g' \
+		third_party/swiftshader/src/Vulkan/vk_swiftshader_icd.json.tmpl > \
+		out/Release/vk_swiftshader_icd.json || die
+}
+
+src_install() {
+	local CHROMIUM_HOME="/usr/$(get_libdir)/chromium-browser"
+	exeinto "${CHROMIUM_HOME}"
+	doexe out/Release/chrome
+
+	newexe out/Release/chrome_sandbox chrome-sandbox
+	fperms 4755 "${CHROMIUM_HOME}/chrome-sandbox"
+
+	doexe out/Release/chromedriver
+	doexe out/Release/chrome_crashpad_handler
+
+	ozone_auto_session () {
+		use X && use wayland && ! use headless && echo true || echo false
+	}
+	local sedargs=( -e
+			"s:/usr/lib/:/usr/$(get_libdir)/:g;
+			s:@@OZONE_AUTO_SESSION@@:$(ozone_auto_session):g"
+	)
+	sed "${sedargs[@]}" "${FILESDIR}/chromium-launcher-r7.sh" > chromium-launcher.sh || die
+	doexe chromium-launcher.sh
+
+	# It is important that we name the target "chromium-browser",
+	# xdg-utils expect it; bug #355517.
+	dosym "${CHROMIUM_HOME}/chromium-launcher.sh" /usr/bin/chromium-browser
+	# keep the old symlink around for consistency
+	dosym "${CHROMIUM_HOME}/chromium-launcher.sh" /usr/bin/chromium
+
+	dosym "${CHROMIUM_HOME}/chromedriver" /usr/bin/chromedriver
+
+	# Allow users to override command-line options, bug #357629.
+	insinto /etc/chromium
+	newins "${FILESDIR}/chromium.default" "default"
+
+	pushd out/Release/locales > /dev/null || die
+	chromium_remove_language_paks
+	popd
+
+	insinto "${CHROMIUM_HOME}"
+	doins out/Release/*.bin
+	doins out/Release/*.pak
+	(
+		shopt -s nullglob
+		local files=(out/Release/*.so out/Release/*.so.[0-9])
+		[[ ${#files[@]} -gt 0 ]] && doins "${files[@]}"
+	)
+
+	# Install bundled xdg-utils, avoids installing X11 libraries with USE="-X wayland"
+	doins out/Release/xdg-{settings,mime}
+
+	if ! use system-icu && ! use headless; then
+		doins out/Release/icudtl.dat
+	fi
+
+	doins -r out/Release/locales
+	doins -r out/Release/MEIPreload
+
+	# Install vk_swiftshader_icd.json; bug #827861
+	doins out/Release/vk_swiftshader_icd.json
+
+	if [[ -d out/Release/swiftshader ]]; then
+		insinto "${CHROMIUM_HOME}/swiftshader"
+		doins out/Release/swiftshader/*.so
+	fi
+
+	# Install icons
+	local branding size
+	for size in 16 24 32 48 64 128 256 ; do
+		case ${size} in
+			16|32) branding="chrome/app/theme/default_100_percent/chromium" ;;
+				*) branding="chrome/app/theme/chromium" ;;
+		esac
+		newicon -s ${size} "${branding}/product_logo_${size}.png" \
+			chromium-browser.png
+	done
+
+	# Install desktop entry
+	domenu out/Release/chromium-browser-chromium.desktop
+
+	# Install GNOME default application entry (bug #303100).
+	insinto /usr/share/gnome-control-center/default-apps
+	newins "${FILESDIR}"/chromium-browser.xml chromium-browser.xml
+
+	# Install manpage; bug #684550
+	doman out/Release/chromium-browser.1
+	dosym chromium-browser.1 /usr/share/man/man1/chromium.1
+
+	readme.gentoo_create_doc
+}
+
+pkg_postrm() {
+	xdg_icon_cache_update
+	xdg_desktop_database_update
+}
+
+pkg_postinst() {
+	xdg_icon_cache_update
+	xdg_desktop_database_update
+	readme.gentoo_print_elog
+
+	if ! use headless; then
+		if use vaapi; then
+			elog "VA-API is disabled by default at runtime. You have to enable it"
+			elog "by adding --enable-features=VaapiVideoDecoder to CHROMIUM_FLAGS"
+			elog "in /etc/chromium/default."
+		fi
+		if use screencast; then
+			elog "Screencast is disabled by default at runtime. Either enable it"
+			elog "by navigating to chrome://flags/#enable-webrtc-pipewire-capturer"
+			elog "inside Chromium or add --enable-features=WebRTCPipeWireCapturer"
+			elog "to CHROMIUM_FLAGS in /etc/chromium/default."
+		fi
+		if use gtk4; then
+			elog "Chromium prefers GTK3 over GTK4 at runtime. To override this"
+			elog "behavior you need to pass --gtk-version=4, e.g. by adding it"
+			elog "to CHROMIUM_FLAGS in /etc/chromium/default."
+		fi
+		if use qt5 && use qt6; then
+			elog "Chromium automatically selects Qt5 or Qt6 based on your desktop"
+			elog "environment. To override you need to pass --qt-version=5 or"
+			elog "--qt-version=6, e.g. by adding it to CHROMIUM_FLAGS in"
+			elog "/etc/chromium/default."
+		fi
+	fi
+}