# Copyright 2009-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

PYTHON_COMPAT=( python3_{11..12} )
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 the custom/bundled 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.

# For binhost users, if USE=bindist is set, we configure Chromium in a way that it is able
# to use proprietary codecs, and so that ffmpeg is an external component (libffmpeg.so),
# then we remove ffmpeg from the image to ensure that the built package is distributable
# (i.e. we don't owe royalties). A suitable libffmpeg.so is symlinked in its place;
# as a result of this, ffmpeg[chromium] or ffmpeg-chromium must be installed on the system.

# For non-binhost builds, we build the bundled ffmpeg and enable proprietary codecs because there's
# no reason not to. Todo: Re-enable USE=system-ffmpeg.

# These variables let us easily bound supported major dependency versions in one place.
GCC_MIN_VER=12
GN_MIN_VER=0.2154
# Since Google use prerelease llvm we can let any adventurous users try to build with prerelease
# ebuilds; try to keep this up to date with the latest version in the tree.
LLVM_MAX_SLOT=19
LLVM_MIN_SLOT=17
RUST_MIN_VER=1.72.0
# chromium-tools/get-chromium-toolchain-strings.sh
GOOGLE_CLANG_VER=llvmorg-19-init-2941-ga0b3dbaf-22
GOOGLE_RUST_VER=7168c13579a550f2c47f7eea22f5e226a436cd00-1

# https://bugs.chromium.org/p/v8/issues/detail?id=14449 - V8 used in 120 can't build with GCC
# Resolved upstream, requires testing and some backporting I'm sure
: ${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="124.0.6367.118-1raptor0~deb12u1"
PATCH_V="${PV%%\.*}"
SRC_URI="https://commondatastorage.googleapis.com/chromium-browser-official/${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/stable"
KEYWORDS="~amd64 ~arm64 ~ppc64"
IUSE_SYSTEM_LIBS="+system-harfbuzz +system-icu +system-png +system-zstd +system-aom"
IUSE="+X ${IUSE_SYSTEM_LIBS} bindist cups debug ffmpeg-chromium gtk4 +hangouts headless kerberos libcxx +lto +official pax-kernel pgo +proprietary-codecs pulseaudio"
IUSE+=" qt5 qt6 +screencast selinux +system-toolchain +vaapi +wayland +widevine"
RESTRICT="!bindist? ( bindist )"

REQUIRED_USE="
	!headless? ( || ( X wayland ) )
	pgo? ( X !wayland )
	qt6? ( qt5 )
	screencast? ( wayland )
	!system-toolchain? ( libcxx )
	ffmpeg-chromium? ( bindist proprietary-codecs )
"

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-aom? ( media-libs/libaom )
	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 )
	bindist? (
		!ffmpeg-chromium? ( >=media-video/ffmpeg-6.1-r1:0/58.60.60[chromium] )
		ffmpeg-chromium? ( media-video/ffmpeg-chromium:${PV%%\.*} )
	)
"
DEPEND="${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
}

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} ${LLVM_MAX_SLOT})
		)
		>=virtual/rust-${RUST_MIN_VER}[profiler(-)]
	)
	>=dev-build/gn-${GN_MIN_VER}
	dev-build/ninja
	dev-lang/perl
	>=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=22
	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=8media-libs/libaom
	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() {
	if [[ ${MERGE_TYPE} != binary ]]; then
		# The pre_build_checks are all about compilation resources, no need to run it for a binpkg
		pre_build_checks
	fi

	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}, USE=headless is set."
		done
	fi

	if ! use bindist && use ffmpeg-chromium; then
		ewarn "Ignoring USE=ffmpeg-chromium, USE=bindist is not set."
	fi
}

pkg_setup() {
	if [[ ${MERGE_TYPE} != binary ]]; then
		# The pre_build_checks are all about compilation resources, no need to run it for a binpkg
		pre_build_checks

		if 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="${CHOST}-clang++ -E"
				fi
			fi
			if needs_clang || tc-is-clang; then
				if ver_test "$(clang-major-version)" -lt ${LLVM_MIN_SLOT}; then
					die "At least Clang ${LLVM_MIN_SLOT} is required"
				fi
				# Ideally we never see this, but it should help prevent bugs like 927154
				if ver_test "$(clang-major-version)" -gt ${LLVM_MAX_SLOT}; then
					die "Clang $(clang-major-version) is too new; ${LLVM_MAX_SLOT} is the highest supported version"
				fi
			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-build/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"
		"${FILESDIR}/chromium-109-system-zlib.patch"
		"${FILESDIR}/chromium-111-InkDropHost-crash.patch"
		"${FILESDIR}/chromium-117-system-zstd.patch"
		"${FILESDIR}/chromium-124-libwebp-shim-sharpyuv.patch"
		"${FILESDIR}/chromium-125-ninja-1-12.patch"
	)

	if use system-toolchain; then
		# The patchset is really only required if we're 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" )
		PATCHES+=( "${WORKDIR}/debian/patches/fixes/rust-clanglib.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/rcssminmedia-libs/libaom
		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/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/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/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/skiamedia-libs/libaom
		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
	)
	
	if ! use system-aom; then
		keeplibs+=( third_party/libaom
		keeplibs+=( third_party/libaom/source/libaom/third_party/fastfeat )
		keeplibs+=( third_party/libaom/source/libaom/third_party/SVT-AV1 )
		keeplibs+=( third_party/libaom/source/libaom/third_party/vector )
		keeplibs+=( third_party/libaom/source/libaom/third_party/x86inc )
	fi

	# 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
		# Revert https://chromium.googlesource.com/chromium/src/+/b463d0f40b08b4e896e7f458d89ae58ce2a27165%5E%21/third_party/libvpx/generate_gni.sh
		# and https://chromium.googlesource.com/chromium/src/+/71ebcbce867dd31da5f8b405a28fcb0de0657d91%5E%21/third_party/libvpx/generate_gni.sh
		# since we're not in a git repo
		sed -i -e "s|^update_readme||g; s|clang-format|${EPREFIX}/bin/true|g; /^git -C/d; /git cl/d; /cd \$BASE_DIR\/\$LIBVPX_SRC_DIR/ign format --in-place \$BASE_DIR\/BUILD.gn\ngn format --in-place \$BASE_DIR\/libvpx_srcs.gni" \
			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"
			# Workaround for build failure with clang-18 and -march=native without
			# avx512. Does not affect e.g. -march=skylake, only native (bug #931623).
			use amd64 && is-flagq -march=native &&
				[[ $(clang-major-version) -ge 18 ]] &&
				tc-cpp-is-true "!defined(__AVX512F__)" ${CXXFLAGS} &&
				append-flags -mevex512
		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 ${rustc_ver} to build"
		fi
		if [[ "$(eselect --brief rust show 2>/dev/null)" == *"bin"* ]]; then
				myconf_gn+=" rust_sysroot_absolute=\"${EPREFIX}/opt/rust-bin-${rustc_ver}/\""
		else
				myconf_gn+=" rust_sysroot_absolute=\"${EPREFIX}/usr/lib/rust/${rustc_ver}/\""
		fi
		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"

	if use bindist ; then
		# proprietary_codecs just forces Chromium to say that it can use h264/aac,
		# the work is still done by ffmpeg. If this is set to no Chromium
		# won't be able to load the codec even if the library can handle it
		myconf_gn+=" proprietary_codecs=true"
		myconf_gn+=" ffmpeg_branding=\"Chrome\""
		# build ffmpeg as an external component (libffmpeg.so) that we can remove / substitute
		myconf_gn+=" is_component_ffmpeg=true"
	else
		ffmpeg_branding="$(usex proprietary-codecs Chrome Chromium)"
		myconf_gn+=" proprietary_codecs=$(usex proprietary-codecs true false)"
		myconf_gn+=" ffmpeg_branding=\"${ffmpeg_branding}\""
	fi

	# 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

	if use bindist; then
		# We built libffmpeg as a component library, but we can't distribute it
		# with proprietary codec support. Remove it and make a symlink to the requested
		# system library.
		rm -f out/Release/libffmpeg.so \
			|| die "Failed to remove bundled libffmpeg.so (with proprietary codecs)"
		# symlink the libffmpeg.so from either ffmpeg-chromium or ffmpeg[chromium].
		einfo "Creating symlink to libffmpeg.so from $(usex ffmpeg-chromium ffmpeg-chromium ffmpeg[chromium])..."
		dosym ../chromium/libffmpeg.so$(usex ffmpeg-chromium .${PV%%\.*} "") \
			/usr/$(get_libdir)/chromium-browser/libffmpeg.so
	fi

	(
		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
}