Adding metadata

3 files changed, 1334 insertions, 0 deletions

diff --git a/www-client/librewolf/Manifest b/www-client/librewolf/Manifest
index 242d92bb20b2..b7e1837e7a6d 100644
--- a/www-client/librewolf/Manifest
+++ b/www-client/librewolf/Manifest
@@ -1,9 +1,13 @@
 DIST firefox-153-patches-01.tar.xz 11308 BLAKE2B cfb7e8528f46e780ff10d728d6f2f00215c9cb940f3ba289aafee183199fd2a38cbe866697b5bd89458d8dce7e82e9a7dc6977e817bbeac1a01178a64adb0405 SHA512 11895ae7eba03b12ae60c280c3ea555c2954dd15eaa8a459f9a95b96629723ed599ab4e7738b33f1bdb0d09d19bccb53d511eaac9913a58e6418c11fe93c92bc
 DIST firefox-154-patches-01.tar.xz 12796 BLAKE2B bc9cff535a3a8ca67564ffdf636e3d4741e4cb3307e2acaf07c58448061ab16dad0827ca51df670007c58424fcd2e8670e30ef3a59ba98428676eb19b34903ce SHA512 4ca08c6ede5a4d1e02c84ef023d33026d8e25b864a581e552096510eaebd1c674f230b4d8c1c6f4d8f7489fd1981c26b6a4713b574416bde770d28505b6d7c1c
 DIST firefox-154-patches-02.tar.xz 14064 BLAKE2B 43fe3a4d309eed7fad5514d54a2a261c9914223a2f28f2457b0671793e050484f108ff55fa91f40d6256ed3d1657082bd26219aa79c27da06eca04999578a56a SHA512 efe0aebb62e847cb8d0399a4a3020f4826ab894a0bd34534de12a9ea8361a8352ecba564e1474ea92e3cf92d3a126fed5b0584ef5be3ccc1bec7466f5d5ce130
+DIST firefox-155-patches-04.tar.xz 12860 BLAKE2B f16f2ce03d625f12c1512ab8271c6bd368b5774482b4173723fbfed7be4f37444f084d6b18c047310dc76ed4be42b18f5580934cc5e9afbb6058173c869a63df SHA512 8f341eaf640d3b75e95b152e36e59836ef7cacfa4182c8dd759e2303fadc3261c28a1f81440f1456aa5477ccbb53542f79599be021d208cf4b1a025eebce07ba
 DIST librewolf-153.0.3-1.source.tar.gz 1164999841 BLAKE2B 407c3cfeb37fe226af82af394b83dcb5f880c521fcdb03a990c01c8a3a5a3179664b59a88529f0c6e14496b0ef19d88be08cb03d988e59d92cfa0e1c94602182 SHA512 4b988d4df3f3c45e7382e86631c9c76f579f7907f5d1bc6cbba57301fc3fb3735fd52d6151c412f256f1af379d88b34d11213b355d658e7614fbcc9dc6541fe2
 DIST librewolf-153.0.4-1.source.tar.gz 1165787893 BLAKE2B 3714f45d6073a62d044d4be68cfe67a449cf7873a9b6d52ff7a60efac63f4804e862ed3693c5817105f9098b6cb0e0eb8f57383b387f5e06b2ae589c3bb1d2a3 SHA512 cbeb6d82e65ec28a66b20cd80ab1f29a16fcb946749b5c267e74ec954d8ef467927e9fe362f658a1e1a366ef20455f440bc073f4a7d055bc24b8f348898fb3db
 DIST librewolf-154.0-2.source.tar.gz 1174385173 BLAKE2B fa7842d664d8f0472fc9e3e0b7971a8c3dd71d9e5c1fd45dc520732de123b408a501279a267ee5e32e854134125ef28a0c8b4adda8f51d310eac598e04cde329 SHA512 14f25b40bd6f8f0edb2801dc779c0da51b2ff6ec7bc3d55d707d00a09eaf96f974173a3038269b947fcdabc3d98fb1588dd123776ecf12d50886a63a638375ef
 DIST librewolf-154.0.1-3.source.tar.gz 1175015645 BLAKE2B 41ab15543b2452711315cab593eb62130c97a50845eacfef4c4faecc06cc2bb821128efe48ffdbf0ebc750026c37f699fff4bca9fed323f03300727fbc6d73cf SHA512 a01425a6ba9f8bf32067499815bce97e8de0ca3804ef382900f60a018cb8778f65e3db12ad42499d1b05eb05f9169cf6cecb0e5f2b630e4716cd9b1a410ad68e
+DIST librewolf-155.0-1.source.tar.gz 1175547857 BLAKE2B 40fadff66b74a6c6584677ff711a8dc083ded4064f3b03984a2321386610b868af40faa9fe9f559377dfabba3f6b0ebeb1694d9deace01828474a097f3f26feb SHA512 63fbd4fcf5b60efc41a50904ab9446db6cc1e6167d250ee934f8426d3ab36f2ddb39c717635f20d711fcde97c43a352b6770d313c18ee761e6c654981e75d824
 DIST wasi-sdk-32.0-arm64-linux.tar.gz 142940986 BLAKE2B 45712415f916c2749bac9002157def84f75d005bcac0403cb9b5a814623a1e0c2a2f24092d55478ca5204afa82c7499cabf405b8e5c6e95a514351801da4a91c SHA512 e39f3130290e63a7c2674e8838bd6569ca6a630c0231e2a303d6bd4a6b7f9c78b59a99606193c3ba3e200d93d9221339d23653e98ef720632d54c5c6866dde69
 DIST wasi-sdk-32.0-x86_64-linux.tar.gz 143157058 BLAKE2B 62b83e2db70b24361962b392551c604b21c59535b8d34a5e652447d7b722b033327334f0e17381d28eaa6dcb31fb02aad9978c66b761fb592b6de502012aeb57 SHA512 f77c08d1eb0f8e765bed4955d4794b33bb38149df5a144bebbe43e91fce3cfda7210cdf57073c0ff23c1d3c68105b6c69b4782af1643a0be2f3310001a2398f0
+DIST wasi-sdk-34.0-arm64-linux.tar.gz 192255247 BLAKE2B 3d185e7e98a1e5091aba98f76f221b7e641acadb8dae5aa453ec24a07f1b3e1643ab2a4d4da2d86cd08fbe3e93a7617864716fb7ca64e716d203bdece6087aa5 SHA512 b27453c20b949e8c783980e69937cfa24a306ed3fe0ce2716a72b5ba4cbf231bdd0f114af6a519c41dd6cd81da7bfb06bb86d7b86a45ffd4a723fe4341d8b653
+DIST wasi-sdk-34.0-x86_64-linux.tar.gz 192383077 BLAKE2B 065494c3f81555844293f33974a7230a47f50133aa2b8ed0c81de771c9342799e36a4814d6b3084daf07f19b4d7ce2dc576e134015625b2fad94c14e199ba319 SHA512 12d773d5c3d4b333c82f3280ac753c93877966df84a11b70e70d07aa1dbf20607eb64ceae836e21f9c6aed44054dc3e50f910657bedc590415e3b02789ab4685
diff --git a/www-client/librewolf/files/gentoo-hwaccel-prefs.js-r4 b/www-client/librewolf/files/gentoo-hwaccel-prefs.js-r4
new file mode 100644
index 000000000000..ff3aa452aec8
--- /dev/null
+++ b/www-client/librewolf/files/gentoo-hwaccel-prefs.js-r4
@@ -0,0 +1,9 @@
+/* Force hardware accelerated rendering due to USE=hwaccel */
+pref("gfx.webrender.all",                     true);
+pref("layers.acceleration.force-enabled",     true);
+pref("layers.gpu-process.enabled",            true);
+pref("media.hardware-video-decoding.enabled", true);
+pref("webgl.force-enabled",                   true);
+pref("gfx.webrender.layer-compositor",        true);
+pref("media.hardware-video-decoding-vulkan.enabled",               true);
+pref("media.hardware-video-decoding-vulkan.direct-export.enabled", false);
diff --git a/www-client/librewolf/librewolf-155.0_p1.ebuild b/www-client/librewolf/librewolf-155.0_p1.ebuild
new file mode 100644
index 000000000000..e924aa936551
--- /dev/null
+++ b/www-client/librewolf/librewolf-155.0_p1.ebuild
@@ -0,0 +1,1321 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+FIREFOX_PATCHSET="firefox-155-patches-04.tar.xz"
+
+LLVM_COMPAT=( 22 )
+
+# This will also filter rust versions that don't match LLVM_COMPAT in the non-clang path; this is fine.
+RUST_NEEDS_LLVM=1
+RUST_MIN_VER=1.90.0
+
+PYTHON_COMPAT=( python3_{13..14} )
+PYTHON_REQ_USE="ncurses,sqlite,ssl"
+
+VIRTUALX_REQUIRED="manual"
+
+# Librewolf version (please rev-bump if changed)
+# Used when cloning patches repository.
+LIBREWOLF_PV="${PV/_p/-}"
+
+# Information about the bundled wasi toolchain from
+# https://github.com/WebAssembly/wasi-sdk/
+WASI_SDK_VER=34.0
+WASI_SDK_LLVM_VER=23
+
+HOMEPAGE="https://librewolf.net/"
+
+MOZ_PN="firefox"
+
+inherit check-reqs desktop flag-o-matic gnome2-utils linux-info llvm-r1 multiprocessing \
+	optfeature pax-utils python-any-r1 readme.gentoo-r1 rust toolchain-funcs virtualx xdg
+
+LIBREWOLF_SRC_URI="https://librewolf.dev/api/packages/librewolf/generic/librewolf-source/${LIBREWOLF_PV}/librewolf-${LIBREWOLF_PV}.source.tar.gz"
+
+PATCH_URIS=(
+	https://dev.gentoo.org/~juippis/mozilla/patchsets/${FIREFOX_PATCHSET}
+)
+
+DESCRIPTION="LibreWolf Web Browser"
+SRC_URI="${LIBREWOLF_SRC_URI} -> librewolf-${LIBREWOLF_PV}.source.tar.gz
+	${PATCH_URIS[@]}
+	wasm-sandbox? (
+		amd64? ( https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VER/.*/}/wasi-sdk-${WASI_SDK_VER}-x86_64-linux.tar.gz )
+		arm64? ( https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VER/.*/}/wasi-sdk-${WASI_SDK_VER}-arm64-linux.tar.gz )
+	)"
+
+S="${WORKDIR}/librewolf-${LIBREWOLF_PV}"
+LICENSE="MPL-2.0 GPL-2 LGPL-2.1"
+SLOT="0/$(ver_cut 1)"
+KEYWORDS="~amd64 ~arm64 ~loong ~ppc64 ~riscv ~x86"
+
+RESTRICT="
+	mirror
+	!test? ( test )
+"
+
+IUSE="+clang dbus debug eme-free +hardened hwaccel jack libproxy pgo pulseaudio selinux sndio"
+IUSE+=" +system-av1 +system-harfbuzz +system-icu +system-jpeg +system-libevent +system-libvpx"
+IUSE+=" system-pipewire system-png +system-webp test wayland wifi +X"
+
+# Firefox-only IUSE
+IUSE+=" +gmp-autoupdate jpegxl +jumbo-build openh264 telemetry valgrind wasm-sandbox"
+
+REQUIRED_USE="|| ( X wayland )
+	debug? ( !system-av1 )
+	pgo? ( jumbo-build )
+	wayland? ( dbus )
+	wifi? ( dbus )
+"
+
+FF_ONLY_DEPEND="selinux? ( sec-policy/selinux-mozilla )"
+BDEPEND="${PYTHON_DEPS}
+	$(llvm_gen_dep '
+		llvm-core/clang:${LLVM_SLOT}
+		llvm-core/llvm:${LLVM_SLOT}
+		clang? (
+			llvm-core/lld:${LLVM_SLOT}
+			pgo? ( llvm-runtimes/compiler-rt-sanitizers:${LLVM_SLOT}[profile] )
+		)
+		wasm-sandbox? ( llvm-core/lld:${LLVM_SLOT} )
+	')
+	app-alternatives/awk
+	app-arch/unzip
+	app-arch/zip
+	>=dev-util/cbindgen-0.29.4
+	net-libs/nodejs
+	virtual/pkgconfig
+	amd64? ( >=dev-lang/nasm-2.14 )
+	x86? ( >=dev-lang/nasm-2.14 )
+	pgo? (
+		X? (
+			sys-devel/gettext
+			x11-base/xorg-server[xvfb]
+			x11-apps/xhost
+		)
+		!X? (
+			gui-wm/tinywl
+			x11-misc/xkeyboard-config
+		)
+	)"
+COMMON_DEPEND="${FF_ONLY_DEPEND}
+	>=app-accessibility/at-spi2-core-2.46.0:2
+	dev-libs/glib:2
+	dev-libs/libffi:=
+	>=dev-libs/nss-3.127
+	>=dev-libs/nspr-4.39
+	media-libs/alsa-lib
+	media-libs/fontconfig
+	media-libs/freetype
+	media-libs/mesa
+	media-video/ffmpeg
+	virtual/zlib:=
+	virtual/freedesktop-icon-theme
+	x11-libs/cairo
+	x11-libs/gdk-pixbuf:2
+	x11-libs/libdrm
+	x11-libs/pango
+	x11-libs/pixman
+	dbus? (
+		sys-apps/dbus
+	)
+	jack? ( virtual/jack )
+	pulseaudio? (
+		|| (
+			media-libs/libpulse
+			>=media-sound/apulse-0.1.12-r4[sdk]
+		)
+	)
+	libproxy? ( net-libs/libproxy )
+	selinux? ( sec-policy/selinux-mozilla )
+	sndio? ( >=media-sound/sndio-1.8.0-r1 )
+	system-av1? (
+		>=media-libs/dav1d-1.0.0:=
+		>=media-libs/libaom-3.10.0:=
+	)
+	system-harfbuzz? (
+		>=media-libs/harfbuzz-2.8.1:0=
+		!wasm-sandbox? ( >=media-gfx/graphite2-1.3.13 )
+	)
+	system-icu? ( >=dev-libs/icu-78.1:= )
+	system-jpeg? ( >=media-libs/libjpeg-turbo-1.2.1:= )
+	system-libevent? ( >=dev-libs/libevent-2.1.12:0=[threads(+)] )
+	system-libvpx? ( >=media-libs/libvpx-1.8.2:0=[postproc] )
+	system-pipewire? ( >=media-video/pipewire-1.4.7-r2:= )
+	system-png? ( >=media-libs/libpng-1.6.45:0=[apng] )
+	system-webp? ( >=media-libs/libwebp-1.1.0:0= )
+	valgrind? ( dev-debug/valgrind )
+	wayland? (
+		>=media-libs/libepoxy-1.5.10-r1
+		x11-libs/gtk+:3[wayland]
+	)
+	wifi? (
+		kernel_linux? (
+			|| (
+				net-misc/networkmanager
+				net-misc/connman[networkmanager]
+			)
+			sys-apps/dbus
+		)
+	)
+	X? (
+		virtual/opengl
+		x11-libs/cairo[X]
+		x11-libs/gtk+:3[X]
+		x11-libs/libX11
+		x11-libs/libXcomposite
+		x11-libs/libXdamage
+		x11-libs/libXext
+		x11-libs/libXfixes
+		x11-libs/libXrandr
+		x11-libs/libxcb:=
+	)"
+RDEPEND="${COMMON_DEPEND}
+	hwaccel? (
+		media-video/libva-utils
+		sys-apps/pciutils
+	)
+	jack? ( virtual/jack )
+	openh264? ( media-libs/openh264:*[plugin] )"
+DEPEND="${COMMON_DEPEND}
+	X? (
+		x11-base/xorg-proto
+		x11-libs/libICE
+		x11-libs/libSM
+	)"
+
+# Allow MOZ_GMP_PLUGIN_LIST to be set in an eclass or
+# overridden in the enviromnent (advanced hackers only)
+if [[ -z "${MOZ_GMP_PLUGIN_LIST+set}" ]] ; then
+	MOZ_GMP_PLUGIN_LIST=( gmp-gmpopenh264 gmp-widevinecdm )
+fi
+
+llvm_check_deps() {
+	if ! has_version -b "llvm-core/clang:${LLVM_SLOT}" ; then
+		einfo "llvm-core/clang:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	if use clang && ! tc-ld-is-mold ; then
+		if ! has_version -b "llvm-core/lld:${LLVM_SLOT}" ; then
+			einfo "llvm-core/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+	fi
+
+	if use pgo ; then
+		if ! has_version -b "=llvm-runtimes/compiler-rt-sanitizers-${LLVM_SLOT}*[profile]" ; then
+			einfo "=llvm-runtimes/compiler-rt-sanitizers-${LLVM_SLOT}*[profile] is missing!" >&2
+			einfo "Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+	fi
+
+	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
+}
+
+MOZ_LANGS=(
+	ace ach af ak an ar as ast az be bg bn bn-BD bn-IN bo bqi br brx bs ca cak ca-valencia
+	ckb crh cs csb cy da de dsb el en-CA en-GB en-ZA eo es-AR es-CL es-ES es-MX et eu fa
+	ff fi fr frp fur fy-NL ga-IE gd gl gn gu-IN gv he hi hi-IN hr hsb hto hu hy-AM
+	hye ia id ilo is it ixl ja ja-JP-mac ka kab kk km kn ko kok ks ku kw lb lg lij lo lt ltg
+	lv mai meh mix mk ml mn mr ms my nb-NO ne-NP nl nn-NO nr nso ny oc or pai pa-IN pbb pl
+	ppl pt-BR pt-PT quy qvi rm ro ru rw sah sat sc scn sco si sk skr sl son sq sr ss st sv-SE
+	sw szl ta ta-LK te tg th tl tn tr trs ts tsz uk ur uz ve vi wo xcl xh zam zh-CN zh-TW zu
+)
+MOZ_LANG_MAP=()
+
+mozilla_set_globals() {
+	# https://bugs.gentoo.org/587334
+	local MOZ_TOO_REGIONALIZED_FOR_L10N=(
+		fy-NL ga-IE gu-IN hi-IN hy-AM nb-NO ne-NP nn-NO pa-IN sv-SE
+	)
+
+	local lang xflag
+	for lang in "${MOZ_LANGS[@]}" ; do
+		# en and en_US are handled internally
+		if [[ ${lang} == en ]] || [[ ${lang} == en-US ]] ; then
+			continue
+		fi
+
+		# strip region subtag if $lang is in the list
+		if has ${lang} "${MOZ_TOO_REGIONALIZED_FOR_L10N[@]}" ; then
+			xflag=${lang%%-*}
+		else
+			xflag=${lang}
+		fi
+
+		MOZ_LANG_MAP+=("l10n_${xflag/[_@]/-} ${lang}")
+
+		IUSE+=" l10n_${xflag/[_@]/-}"
+	done
+}
+mozilla_set_globals
+
+moz_clear_vendor_checksums() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -ne 1 ]] ; then
+		die "${FUNCNAME} requires exact one argument"
+	fi
+
+	einfo "Clearing cargo checksums for ${1} ..."
+
+	sed -i \
+		-e 's/\("files":{\)[^}]*/\1/' \
+		"${S}"/third_party/rust/${1}/.cargo-checksum.json || die
+}
+
+moz_install_xpi() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local DESTDIR=${1}
+	shift
+
+	insinto "${DESTDIR}"
+
+	local emid xpi_file xpi_tmp_dir
+	for xpi_file in "${@}" ; do
+		emid=
+		xpi_tmp_dir=$(mktemp -d --tmpdir="${T}")
+
+		# Unpack XPI
+		unzip -qq "${xpi_file}" -d "${xpi_tmp_dir}" || die
+
+		# Determine extension ID
+		if [[ -f "${xpi_tmp_dir}/install.rdf" ]] ; then
+			emid=$(sed -n -e '/install-manifest/,$ { /em:id/!d; s/.*[\">]\([^\"<>]*\)[\"<].*/\1/; p; q }' "${xpi_tmp_dir}/install.rdf")
+			[[ -z "${emid}" ]] && die "failed to determine extension id from install.rdf"
+		elif [[ -f "${xpi_tmp_dir}/manifest.json" ]] ; then
+			emid=$(sed -n -e 's/.*"id": "\([^"]*\)".*/\1/p' "${xpi_tmp_dir}/manifest.json")
+			[[ -z "${emid}" ]] && die "failed to determine extension id from manifest.json"
+		else
+			die "failed to determine extension id"
+		fi
+
+		einfo "Installing ${emid}.xpi into ${ED}${DESTDIR} ..."
+		newins "${xpi_file}" "${emid}.xpi"
+	done
+}
+
+mozconfig_add_options_ac() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local reason=${1}
+	shift
+
+	local option
+	for option in ${@} ; do
+		echo "ac_add_options ${option} # ${reason}" >>${MOZCONFIG}
+	done
+}
+
+mozconfig_add_options_mk() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local reason=${1}
+	shift
+
+	local option
+	for option in ${@} ; do
+		echo "mk_add_options ${option} # ${reason}" >>${MOZCONFIG}
+	done
+}
+
+mozconfig_use_enable() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 1 ]] ; then
+		die "${FUNCNAME} requires at least one arguments"
+	fi
+
+	local flag=$(use_enable "${@}")
+	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
+}
+
+mozconfig_use_with() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 1 ]] ; then
+		die "${FUNCNAME} requires at least one arguments"
+	fi
+
+	local flag=$(use_with "${@}")
+	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
+}
+
+virtwl() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	[[ $# -lt 1 ]] && die "${FUNCNAME} needs at least one argument"
+	[[ -n $XDG_RUNTIME_DIR ]] || die "${FUNCNAME} needs XDG_RUNTIME_DIR to be set; try xdg_environment_reset"
+	tinywl -h >/dev/null || die 'tinywl -h failed'
+
+	local VIRTWL VIRTWL_PID
+	coproc VIRTWL { WLR_BACKENDS=headless exec tinywl -s 'echo $WAYLAND_DISPLAY; read _; kill $PPID'; }
+	local -x WAYLAND_DISPLAY
+	read WAYLAND_DISPLAY <&${VIRTWL[0]}
+
+	debug-print "${FUNCNAME}: $@"
+	"$@"
+	local r=$?
+
+	[[ -n $VIRTWL_PID ]] || die "tinywl exited unexpectedly"
+	exec {VIRTWL[0]}<&- {VIRTWL[1]}>&-
+	return $r
+}
+
+pkg_pretend() {
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+		# Ensure we have enough disk space to compile
+		if use pgo || use debug ; then
+			CHECKREQS_DISK_BUILD="18700M"
+		elif tc-is-lto ; then
+			CHECKREQS_DISK_BUILD="10900M"
+		else
+			CHECKREQS_DISK_BUILD="9700M"
+		fi
+
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_setup() {
+
+	# Get LTO from environment; export after this phase for use in src_configure (etc)
+	use_lto=no
+
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+
+		if tc-is-lto; then
+			use_lto=yes
+			# LTO is handled via configure
+			filter-lto
+		fi
+
+		if use pgo ; then
+			if ! has userpriv ${FEATURES} ; then
+				eerror "Building ${PN} with USE=pgo and FEATURES=-userpriv is not supported!"
+			fi
+		fi
+
+		if [[ ${use_lto} = yes ]]; then
+			# -Werror=lto-type-mismatch -Werror=odr are going to fail with GCC,
+			# bmo#1516758, bgo#942288
+			filter-flags -Werror=lto-type-mismatch -Werror=odr
+		fi
+
+		# Ensure we have enough disk space to compile
+		if use pgo || use debug ; then
+			CHECKREQS_DISK_BUILD="18700M"
+		elif [[ ${use_lto} == "yes" ]] ; then
+			CHECKREQS_DISK_BUILD="10900M"
+		else
+			CHECKREQS_DISK_BUILD="9700M"
+		fi
+
+		check-reqs_pkg_setup
+		llvm-r1_pkg_setup
+		rust_pkg_setup
+		python-any-r1_pkg_setup
+
+		# Avoid PGO profiling problems due to enviroment leakage
+		# These should *always* be cleaned up anyway
+		unset \
+			DBUS_SESSION_BUS_ADDRESS \
+			DISPLAY \
+			ORBIT_SOCKETDIR \
+			SESSION_MANAGER \
+			XAUTHORITY \
+			XDG_CACHE_HOME \
+			XDG_SESSION_COOKIE
+
+		# Build system is using /proc/self/oom_score_adj, bug #604394
+		addpredict /proc/self/oom_score_adj
+
+		if use pgo ; then
+			# Update 105.0: "/proc/self/oom_score_adj" isn't enough anymore with pgo, but not sure
+			# whether that's due to better OOM handling by Firefox (bmo#1771712), or portage
+			# (PORTAGE_SCHEDULING_POLICY) update...
+			addpredict /proc
+
+			# Clear tons of conditions, since PGO is hardware-dependant.
+			addpredict /dev
+		fi
+
+		if ! mountpoint -q /dev/shm ; then
+			# If /dev/shm is not available, configure is known to fail with
+			# a traceback report referencing /usr/lib/pythonN.N/multiprocessing/synchronize.py
+			ewarn "/dev/shm is not mounted -- expect build failures!"
+		fi
+
+		# Google API keys (see http://www.chromium.org/developers/how-tos/api-keys)
+		# Note: These are for Gentoo Linux use ONLY. For your own distribution, please
+		# get your own set of keys.
+		if [[ -z "${MOZ_API_KEY_GOOGLE+set}" ]] ; then
+			MOZ_API_KEY_GOOGLE="AIzaSyDEAOvatFogGaPi0eTgsV_ZlEzx0ObmepsMzfAc"
+		fi
+
+		if [[ -z "${MOZ_API_KEY_LOCATION+set}" ]] ; then
+			MOZ_API_KEY_LOCATION="AIzaSyB2h2OuRgGaPicUgy5N-5hsZqiPW6sH3n_rptiQ"
+		fi
+
+		# Mozilla API keys (see https://location.services.mozilla.com/api)
+		# Note: These are for Gentoo Linux use ONLY. For your own distribution, please
+		# get your own set of keys.
+		if [[ -z "${MOZ_API_KEY_MOZILLA+set}" ]] ; then
+			MOZ_API_KEY_MOZILLA="edb3d487-3a84-46m0ap1e3-9dfd-92b5efaaa005"
+		fi
+
+		# Ensure we use C locale when building, bug #746215
+		export LC_ALL=C
+	fi
+
+	export use_lto
+
+	CONFIG_CHECK="~SECCOMP"
+	WARNING_SECCOMP="CONFIG_SECCOMP not set! This system will be unable to play DRM-protected content."
+	linux-info_pkg_setup
+}
+
+src_unpack() {
+	local _lp_dir="${WORKDIR}/language_packs"
+	local _src_file
+
+	if [[ ! -d "${_lp_dir}" ]] ; then
+		mkdir "${_lp_dir}" || die
+	fi
+
+	for _src_file in ${A} ; do
+		if [[ ${_src_file} == *.xpi ]]; then
+			cp "${DISTDIR}/${_src_file}" "${_lp_dir}" || die "Failed to copy '${_src_file}' to '${_lp_dir}'!"
+		else
+			unpack ${_src_file}
+		fi
+	done
+}
+
+src_prepare() {
+	if [[ ${use_lto} == "yes" ]]; then
+		rm -v "${WORKDIR}"/firefox-patches/*-LTO-Only-enable-LTO-*.patch || die
+	fi
+
+	# Workaround for bgo#915651 and bmo#1988166 on musl
+	if use elibc_glibc ; then
+		rm -v "${WORKDIR}"/firefox-patches/*bgo-748849-RUST_TARGET_override.patch || die
+		rm -v "${WORKDIR}"/firefox-patches/*bgo-967694-musl-prctrl-exception-on-musl.patch || die
+	fi
+
+	eapply "${WORKDIR}/firefox-patches"
+
+	# Allow user to apply any additional patches without modifing ebuild
+	eapply_user
+
+	# Make cargo respect MAKEOPTS
+	export CARGO_BUILD_JOBS="$(makeopts_jobs)"
+
+	# Workaround for bgo#915651
+	if ! use elibc_glibc ; then
+		if use amd64 ; then
+			export RUST_TARGET="x86_64-unknown-linux-musl"
+		elif use x86 ; then
+			export RUST_TARGET="i686-unknown-linux-musl"
+		elif use arm64 ; then
+			export RUST_TARGET="aarch64-unknown-linux-musl"
+		elif use loong; then
+			# Only the LP64D ABI of LoongArch64 is actively supported among
+			# the wider Linux ecosystem, so the assumption is safe.
+			export RUST_TARGET="loongarch64-unknown-linux-musl"
+		elif use ppc64 ; then
+			export RUST_TARGET="powerpc64le-unknown-linux-musl"
+		elif use riscv ; then
+			# We can pretty safely rule out any 32-bit riscvs, but 64-bit riscvs also have tons of
+			# different ABIs available. riscv64gc-unknown-linux-musl seems to be the best working
+			# guess right now though.
+			elog "riscv detected, forcing a riscv64 target for now."
+			export RUST_TARGET="riscv64gc-unknown-linux-musl"
+		else
+			die "Unknown musl chost, please post a new bug with your rustc -vV along with emerge --info"
+		fi
+	fi
+
+	# Pre-built wasm-sandbox path manipulation.
+	if use wasm-sandbox ; then
+		if use amd64 ; then
+			export wasi_arch="x86_64"
+		elif use arm64 ; then
+			export wasi_arch="arm64"
+		else
+			die "wasm-sandbox enabled on unknown/unsupported arch!"
+		fi
+
+		sed -i \
+			-e "s:%%PORTAGE_WORKDIR%%:${WORKDIR}:" \
+			-e "s:%%WASI_ARCH%%:${wasi_arch}:" \
+			-e "s:%%WASI_SDK_VER%%:${WASI_SDK_VER}:" \
+			-e "s:%%WASI_SDK_LLVM_VER%%:${WASI_SDK_LLVM_VER}:" \
+			toolkit/moz.configure || die "Failed to update wasi-related paths."
+	fi
+
+	# Make LTO respect MAKEOPTS
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/build/moz.configure/lto-pgo.configure || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/chromium/build/toolchain/get_cpu_count.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/python/gyp/pylib/gyp/input.py || die "Failed sedding multiprocessing.cpu_count"
+
+	# sed-in toolchain prefix
+	sed -i \
+		-e "s/objdump/${CHOST}-objdump/" \
+		"${S}"/python/mozbuild/mozbuild/configure/check_debug_ranges.py || die "sed failed to set toolchain prefix"
+
+	sed -i \
+		-e 's/ccache_stats = None/return None/' \
+		"${S}"/python/mozbuild/mozbuild/controller/building.py || die "sed failed to disable ccache stats call"
+
+	einfo "Removing pre-built binaries ..."
+
+	find "${S}"/third_party -type f \( -name '*.so' -o -name '*.o' \) -print -delete || die
+
+	# Clear checksums from cargo crates we've manually patched.
+	# moz_clear_vendor_checksums xyz
+
+	# Respect choice for "jumbo-build"
+	# Changing the value for FILES_PER_UNIFIED_FILE may not work, see #905431
+	if [[ -n ${FILES_PER_UNIFIED_FILE} ]] && use jumbo-build; then
+		local my_files_per_unified_file=${FILES_PER_UNIFIED_FILE:=16}
+		elog ""
+		elog "jumbo-build defaults modified to ${my_files_per_unified_file}."
+		elog "if you get a build failure, try undefining FILES_PER_UNIFIED_FILE,"
+		elog "if that fails try -jumbo-build before opening a bug report."
+		elog ""
+
+		sed -i -e "s/\"FILES_PER_UNIFIED_FILE\", 16/\"FILES_PER_UNIFIED_FILE\", "${my_files_per_unified_file}"/" \
+			python/mozbuild/mozbuild/frontend/data.py ||
+				die "Failed to adjust FILES_PER_UNIFIED_FILE in python/mozbuild/mozbuild/frontend/data.py"
+		sed -i -e "s/FILES_PER_UNIFIED_FILE = 6/FILES_PER_UNIFIED_FILE = "${my_files_per_unified_file}"/" \
+			js/src/moz.build ||
+				die "Failed to adjust FILES_PER_UNIFIED_FILE in js/src/moz.build"
+	fi
+
+	# Create build dir
+	BUILD_DIR="${WORKDIR}/${PN}_build"
+	mkdir -p "${BUILD_DIR}" || die
+
+	# Write API keys to disk
+	echo -n "${MOZ_API_KEY_GOOGLE//gGaPi/}" > "${S}"/api-google.key || die
+	echo -n "${MOZ_API_KEY_LOCATION//gGaPi/}" > "${S}"/api-location.key || die
+	echo -n "${MOZ_API_KEY_MOZILLA//m0ap1/}" > "${S}"/api-mozilla.key || die
+
+	xdg_environment_reset
+}
+
+src_configure() {
+	# Show flags set at the beginning
+	einfo "Current BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
+	einfo "Current CFLAGS:\t\t${CFLAGS:-no value set}"
+	einfo "Current CXXFLAGS:\t\t${CXXFLAGS:-no value set}"
+	einfo "Current LDFLAGS:\t\t${LDFLAGS:-no value set}"
+	einfo "Current RUSTFLAGS:\t\t${RUSTFLAGS:-no value set}"
+
+	local have_switched_compiler=
+	if use clang; then
+		# Force clang
+		einfo "Enforcing the use of clang due to USE=clang ..."
+
+		local version_clang=$(clang --version 2>/dev/null | grep -F -- 'clang version' | awk '{ print $3 }')
+		[[ -n ${version_clang} ]] && version_clang=$(ver_cut 1 "${version_clang}")
+		[[ -z ${version_clang} ]] && die "Failed to read clang version!"
+
+		if tc-is-gcc; then
+			have_switched_compiler=yes
+		fi
+
+		AR=llvm-ar
+		CC=${CHOST}-clang-${version_clang}
+		CXX=${CHOST}-clang++-${version_clang}
+		NM=llvm-nm
+		RANLIB=llvm-ranlib
+	elif ! use clang && ! tc-is-gcc ; then
+		# Force gcc
+		have_switched_compiler=yes
+		einfo "Enforcing the use of gcc due to USE=-clang ..."
+		AR=gcc-ar
+		CC=${CHOST}-gcc
+		CXX=${CHOST}-g++
+		NM=gcc-nm
+		RANLIB=gcc-ranlib
+	fi
+
+	if [[ -n "${have_switched_compiler}" ]] ; then
+		# Because we switched active compiler we have to ensure
+		# that no unsupported flags are set
+		strip-unsupported-flags
+	fi
+
+	# Ensure we use correct toolchain,
+	# AS is used in a non-standard way by upstream, #bmo1654031
+	export HOST_CC="$(tc-getBUILD_CC)"
+	export HOST_CXX="$(tc-getBUILD_CXX)"
+	export AS="$(tc-getCC) -c"
+
+	# Configuration tests expect llvm-readelf output, bug 913130
+	READELF="llvm-readelf"
+
+	tc-export CC CXX LD AR AS NM OBJDUMP RANLIB READELF PKG_CONFIG
+
+	# Pass the correct toolchain paths through cbindgen
+	if tc-is-cross-compiler ; then
+		export BINDGEN_CFLAGS="${SYSROOT:+--sysroot=${ESYSROOT}} --target=${CHOST} ${BINDGEN_CFLAGS-}"
+	fi
+
+	# Set MOZILLA_FIVE_HOME
+	export MOZILLA_FIVE_HOME="/usr/$(get_libdir)/${PN}"
+
+	# python/mach/mach/mixin/process.py fails to detect SHELL
+	export SHELL="${EPREFIX}/bin/bash"
+
+	# Set state path
+	export MOZBUILD_STATE_PATH="${BUILD_DIR}"
+
+	# Set MOZCONFIG
+	export MOZCONFIG="${S}/.mozconfig"
+
+	# Initialize MOZCONFIG
+	mozconfig_add_options_ac '' --enable-application=browser
+	mozconfig_add_options_ac '' --enable-project=browser
+
+	# Set Gentoo defaults
+	export MOZILLA_OFFICIAL=1
+
+	mozconfig_add_options_ac 'Gentoo default' \
+		--allow-addon-sideload \
+		--disable-cargo-incremental \
+		--disable-crashreporter \
+		--disable-disk-remnant-avoidance \
+		--disable-geckodriver \
+		--disable-install-strip \
+		--disable-legacy-profile-creation \
+		--disable-parental-controls \
+		--disable-strip \
+		--disable-updater \
+		--disable-wmf \
+		--enable-negotiateauth \
+		--enable-new-pass-manager \
+		--enable-packed-relative-relocs \
+		--enable-release \
+		--enable-system-policies \
+		--host="${CBUILD:-${CHOST}}" \
+		--libdir="${EPREFIX}/usr/$(get_libdir)" \
+		--prefix="${EPREFIX}/usr" \
+		--target="${CHOST}" \
+		--without-ccache \
+		--with-intl-api \
+		--with-libclang-path="$(llvm-config --libdir)" \
+		--with-system-ffi \
+		--with-system-gbm \
+		--with-system-libdrm \
+		--with-system-nspr \
+		--with-system-nss \
+		--with-system-pixman \
+		--with-system-zlib \
+		--with-toolchain-prefix="${CHOST}-" \
+		--with-unsigned-addon-scopes=app,system
+
+	# Librewolf
+	mozconfig_add_options_ac 'LibreWolf Branding' \
+		--with-app-name="librewolf" \
+		--with-app-basename="librewolf" \
+		--with-branding=browser/branding/librewolf
+	export MOZ_APP_REMOTINGNAME=LibreWolf
+
+	# I really have know idea if this is actually doing anything.
+	mozconfig_add_options_ac 'LibreWolf Localization' \
+		--with-l10n-base=$PWD/lw/l10n
+
+	## Controlled via 'telemetry' IUSE
+	# mozconfig_add_options_mk 'LibreWolf Disable Telemetry' \
+	# 	MOZ_CRASHREPORTER=0 \
+	# 	MOZ_DATA_REPORTING=0 \
+	# 	MOZ_SERVICES_HEALTHREPORT=0 \
+	# 	MOZ_TELEMETRY_REPORTING=0
+
+	export MOZ_REQUIRE_SIGNING=
+
+	# Set update channel
+	mozconfig_add_options_ac '' --enable-update-channel=release
+
+	# Whitelist to allow unkeyworded arches to build with "--disable-rust-simd" by default.
+	if use amd64 || use arm64 || use ppc64 || use loong || use riscv ; then
+		mozconfig_add_options_ac '' --enable-rust-simd
+	fi
+
+	# For future keywording: This is currently (97.0) only supported on:
+	# amd64, arm, arm64 & x86.
+	# Might want to flip the logic around if Firefox is to support more arches.
+	# bug 833001, bug 903411#c8
+	if use loong || use ppc64 || use riscv; then
+		mozconfig_add_options_ac '' --disable-sandbox
+	else
+		mozconfig_add_options_ac '' --enable-sandbox
+	fi
+
+	# riscv-related options, bgo#947337, bgo#947338, bgo#977845
+	if use riscv ; then
+		mozconfig_add_options_ac 'Disable webrtc for RISC-V' --disable-webrtc
+		mozconfig_add_options_ac 'Disable JIT for RISC-V' --disable-jit
+	fi
+
+	mozconfig_use_enable valgrind
+
+	if use valgrind ; then
+		mozconfig_add_options_ac 'valgrind requirement' --disable-sandbox
+		mozconfig_add_options_ac 'valgrind requirement' --disable-jemalloc
+
+		sed -i -e 's/--enable-optimize=-O[0-9s]/--enable-optimize="-g -O2"/' .mozconfig || die
+	fi
+
+	if [[ -s "${S}/api-google.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-google.key" | md5sum | awk '{ print $1 }') != 709560c02f94b41f9ad2c49207be6c54 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-google-safebrowsing-api-keyfile="${S}/api-google.key"
+	else
+		einfo "Building without Google API key ..."
+	fi
+
+	if [[ -s "${S}/api-location.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-location.key" | md5sum | awk '{ print $1 }') != ffb7895e35dedf832eb1c5d420ac7420 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-google-location-service-api-keyfile="${S}/api-location.key"
+	else
+		einfo "Building without Location API key ..."
+	fi
+
+	if [[ -s "${S}/api-mozilla.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-mozilla.key" | md5sum | awk '{ print $1 }') != 3927726e9442a8e8fa0e46ccc39caa27 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-mozilla-api-keyfile="${S}/api-mozilla.key"
+	else
+		einfo "Building without Mozilla API key ..."
+	fi
+
+	mozconfig_use_with system-av1
+	mozconfig_use_with system-harfbuzz
+	mozconfig_use_with system-icu
+	mozconfig_use_with system-jpeg
+	mozconfig_use_with system-libevent
+	mozconfig_use_with system-libvpx
+	mozconfig_use_with system-pipewire
+	mozconfig_use_with system-png
+	mozconfig_use_with system-webp
+
+	mozconfig_use_enable dbus
+	mozconfig_use_enable libproxy
+	mozconfig_use_enable jumbo-build unified-build
+
+	use eme-free && mozconfig_add_options_ac '+eme-free' --disable-eme
+
+	if use hardened ; then
+		mozconfig_add_options_ac "+hardened" --enable-hardening
+		mozconfig_add_options_ac "+hardened stl" --enable-stl-hardening
+		append-ldflags "-Wl,-z,relro -Wl,-z,now"
+
+		# Increase the FORTIFY_SOURCE value, #910071.
+		sed -i -e '/-D_FORTIFY_SOURCE=/s:2:3:' "${S}"/build/moz.configure/toolchain.configure || die
+	fi
+
+	local myaudiobackends=""
+	use jack && myaudiobackends+="jack,"
+	use sndio && myaudiobackends+="sndio,"
+	use pulseaudio && myaudiobackends+="pulseaudio,"
+	! use pulseaudio && myaudiobackends+="alsa,"
+
+	mozconfig_add_options_ac '--enable-audio-backends' --enable-audio-backends="${myaudiobackends::-1}"
+
+	mozconfig_use_enable wifi necko-wifi
+
+	if use X && use wayland ; then
+		mozconfig_add_options_ac '+x11+wayland' --enable-default-toolkit=cairo-gtk3-x11-wayland
+	elif ! use X && use wayland ; then
+		mozconfig_add_options_ac '+wayland' --enable-default-toolkit=cairo-gtk3-wayland-only
+	else
+		mozconfig_add_options_ac '+x11' --enable-default-toolkit=cairo-gtk3-x11-only
+	fi
+
+	# wasm-sandbox
+	# Since graphite2 is one of the sandboxed libraries, system-graphite2 obviously can't work with +wasm-sandbox.
+	if use wasm-sandbox ; then
+		mozconfig_add_options_ac '+wasm-sandbox' --with-wasi-sysroot="${WORKDIR}/wasi-sdk-${WASI_SDK_VER}-${wasi_arch}-linux/share/wasi-sysroot/"
+	else
+		mozconfig_add_options_ac 'no wasm-sandbox' --without-wasm-sandboxed-libraries
+		mozconfig_use_with system-harfbuzz system-graphite2
+	fi
+
+	! use jpegxl && mozconfig_add_options_ac '-jpegxl' --disable-jxl
+
+	if [[ ${use_lto} == "yes" ]] ; then
+		if use clang ; then
+			# Upstream only supports lld or mold when using clang.
+			if tc-ld-is-mold ; then
+				# mold expects the -flto line from *FLAGS configuration, bgo#923119
+				append-ldflags "-flto=thin"
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "forcing ld=lld due to USE=clang and USE=lto" --enable-linker=lld
+			fi
+
+			mozconfig_add_options_ac '+lto' --enable-lto=cross
+
+		else
+			# ThinLTO is currently broken, see bmo#1644409.
+			# mold does not support gcc+lto combination.
+			mozconfig_add_options_ac '+lto' --enable-lto=full
+			mozconfig_add_options_ac "linker is set to bfd" --enable-linker=bfd
+		fi
+
+	else
+		# Avoid auto-magic on linker
+		if use clang ; then
+			# lld is upstream's default
+			if tc-ld-is-mold ; then
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "forcing ld=lld due to USE=clang" --enable-linker=lld
+			fi
+
+		else
+			if tc-ld-is-mold ; then
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "linker is set to bfd due to USE=-clang" --enable-linker=bfd
+			fi
+		fi
+	fi
+
+	# PGO was moved outside lto block to allow building pgo without lto.
+	if use pgo ; then
+		mozconfig_add_options_ac '+pgo' MOZ_PGO=1
+
+		# Avoid compressing just-built instrumented Firefox with
+		# high levels of compression. Just use tar as a container
+		# to save >=10 minutes.
+		export MOZ_PKG_FORMAT=TAR
+
+		if use clang ; then
+			# Used in build/pgo/profileserver.py
+			export LLVM_PROFDATA="llvm-profdata"
+		else
+			# Attempt to fix pgo hanging with gcc, bgo#966309.
+			export MOZ_REMOTE_SETTINGS_DEVTOOLS=1
+		fi
+	fi
+
+	mozconfig_use_enable debug
+	if use debug ; then
+		mozconfig_add_options_ac '+debug' --disable-optimize
+		mozconfig_add_options_ac '+debug' --enable-jemalloc
+		mozconfig_add_options_ac '+debug' --enable-real-time-tracing
+	else
+		mozconfig_add_options_ac 'Gentoo defaults' --disable-real-time-tracing
+
+		if is-flag '-g*' ; then
+			if use clang ; then
+				mozconfig_add_options_ac 'from CFLAGS' --enable-debug-symbols=$(get-flag '-g*')
+			else
+				mozconfig_add_options_ac 'from CFLAGS' --enable-debug-symbols
+			fi
+		else
+			mozconfig_add_options_ac 'Gentoo default' --disable-debug-symbols
+		fi
+
+		if is-flag '-O0' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O0
+		elif is-flag '-O4' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O4
+		elif is-flag '-O3' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O3
+		elif is-flag '-O1' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O1
+		elif is-flag '-Os' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-Os
+		else
+			mozconfig_add_options_ac "Gentoo default" --enable-optimize=-O2
+		fi
+	fi
+
+	# Debug flag was handled via configure
+	filter-flags '-g*'
+
+	# Optimization flag was handled via configure
+	filter-flags '-O*'
+
+	# elf-hack
+	# Filter "-z,pack-relative-relocs" and let the build system handle it instead.
+	if use amd64 || use x86 ; then
+		filter-flags "-z,pack-relative-relocs"
+
+		if tc-ld-is-mold ; then
+			# relr-elf-hack is currently broken with mold, bgo#916259
+			mozconfig_add_options_ac 'disable elf-hack with mold linker' --disable-elf-hack
+		else
+			mozconfig_add_options_ac 'relr elf-hack' --enable-elf-hack=relr
+		fi
+	elif use loong || use ppc64 || use riscv ; then
+		# '--disable-elf-hack' is not recognized on loong/ppc64/riscv,
+		# see bgo #917049, #930046
+		:;
+	else
+		mozconfig_add_options_ac 'disable elf-hack on non-supported arches' --disable-elf-hack
+	fi
+
+	if ! use elibc_glibc; then
+		mozconfig_add_options_ac '!elibc_glibc' --disable-jemalloc
+	fi
+
+	# System-av1 fix
+	use system-av1 && append-ldflags "-Wl,--undefined-version"
+
+	# Make revdep-rebuild.sh happy; Also required for musl
+	append-ldflags -Wl,-rpath="${MOZILLA_FIVE_HOME}",--enable-new-dtags
+
+	# Pass $MAKEOPTS to build system
+	export MOZ_MAKE_FLAGS="${MAKEOPTS}"
+
+	# Use system's Python environment
+	export PIP_NETWORK_INSTALL_RESTRICTED_VIRTUALENVS=mach
+
+	export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="none"
+
+	if ! use telemetry; then
+		mozconfig_add_options_mk '-telemetry setting' "MOZ_CRASHREPORTER=0"
+		mozconfig_add_options_mk '-telemetry setting' "MOZ_DATA_REPORTING=0"
+		mozconfig_add_options_mk '-telemetry setting' "MOZ_SERVICES_HEALTHREPORT=0"
+		mozconfig_add_options_mk '-telemetry setting' "MOZ_TELEMETRY_REPORTING=0"
+	fi
+
+	mozconfig_use_enable test tests
+
+	# Disable notification when build system has finished
+	export MOZ_NOSPAM=1
+
+	# Portage sets XARGS environment variable to "xargs -r" by default which
+	# breaks build system's check_prog() function which doesn't support arguments
+	mozconfig_add_options_ac 'Gentoo default' "XARGS=${EPREFIX}/usr/bin/xargs"
+
+	# Set build dir
+	mozconfig_add_options_mk 'Gentoo default' "MOZ_OBJDIR=${BUILD_DIR}"
+
+	# Show flags we will use
+	einfo "Build BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
+	einfo "Build CFLAGS:\t\t${CFLAGS:-no value set}"
+	einfo "Build CXXFLAGS:\t\t${CXXFLAGS:-no value set}"
+	einfo "Build LDFLAGS:\t\t${LDFLAGS:-no value set}"
+	einfo "Build RUSTFLAGS:\t\t${RUSTFLAGS:-no value set}"
+
+	# Handle EXTRA_CONF and show summary
+	local ac opt hash reason
+
+	# Apply EXTRA_ECONF entries to $MOZCONFIG
+	if [[ -n ${EXTRA_ECONF} ]] ; then
+		IFS=\! read -a ac <<<${EXTRA_ECONF// --/\!}
+		for opt in "${ac[@]}"; do
+			mozconfig_add_options_ac "EXTRA_ECONF" --${opt#--}
+		done
+	fi
+
+	echo
+	echo "=========================================================="
+	echo "Building ${PF} with the following configuration"
+	grep ^ac_add_options "${MOZCONFIG}" | while read ac opt hash reason; do
+		[[ -z ${hash} || ${hash} == \# ]] \
+			|| die "error reading mozconfig: ${ac} ${opt} ${hash} ${reason}"
+		printf "    %-30s  %s\n" "${opt}" "${reason:-mozilla.org default}"
+	done
+	echo "=========================================================="
+	echo
+
+	./mach configure || die
+}
+
+src_compile() {
+	local virtx_cmd=
+
+	if [[ ${use_lto} == "yes" ]] && tc-ld-is-mold ; then
+		# increase ulimit with mold+lto, bugs #892641, #907485
+		if ! ulimit -n 16384 1>/dev/null 2>&1 ; then
+			ewarn "Unable to modify ulimits - building with mold+lto might fail due to low ulimit -n resources."
+			ewarn "Please see bugs #892641 & #907485."
+		else
+			ulimit -n 16384
+		fi
+	fi
+
+	if use pgo; then
+		# Reset and cleanup environment variables used by GNOME/XDG
+		gnome2_environment_reset
+
+		addpredict /root
+
+		if ! use X; then
+			virtx_cmd=virtwl
+		else
+			virtx_cmd=virtx
+		fi
+	fi
+
+	if ! use X; then
+		local -x GDK_BACKEND=wayland
+	else
+		local -x GDK_BACKEND=x11
+	fi
+
+	${virtx_cmd} ./mach build --verbose || die
+}
+
+src_test() {
+	# https://firefox-source-docs.mozilla.org/testing/automated-testing/index.html
+	local -a failures=()
+
+	# Some tests respect this
+	local -x MOZ_HEADLESS=1
+
+	# Check testing/mach_commands.py
+	einfo "Testing with cppunittest ..."
+	./mach cppunittest
+	local ret=$?
+	if [[ ${ret} -ne 0 ]]; then
+		eerror "Test suite cppunittest failed with error code ${ret}"
+		failures+=( cppunittest )
+	fi
+
+	if [[ ${#failures} -eq 0 ]]; then
+		einfo "Test suites succeeded"
+	else
+		die "Test suites failed: ${failures[@]}"
+	fi
+}
+
+src_install() {
+	# xpcshell is getting called during install
+	pax-mark m \
+		"${BUILD_DIR}"/dist/bin/xpcshell \
+		"${BUILD_DIR}"/dist/bin/${PN} \
+		"${BUILD_DIR}"/dist/bin/plugin-container
+
+	#DESTDIR="${D}" ./mach install || die
+	## LibreWolf
+	# ./mach install doesn't install the locale information for some reason.
+	# Use packge-multi-locale instead
+	local mymozlangs=()
+	for lang_tuple in "${MOZ_LANG_MAP[@]}"; do
+		IFS=' ' read -r l10n lang <<< "${lang_tuple}"
+
+		if use "${l10n}"; then
+			mymozlangs+=("${lang}")
+		fi
+	done
+
+	if (( ${#mymozlangs[@]} == 0 )); then
+		einfo "Running ./mach package"
+		./mach package || die
+	else
+		einfo "Running ./mach package-multi-locale"
+		./mach package-multi-locale --locale "${mymozlangs[@]}" || die
+	fi
+
+	dodir "${MOZILLA_FIVE_HOME}" || die
+	cp -r "${BUILD_DIR}"/dist/librewolf/* "${ED}"/"${MOZILLA_FIVE_HOME}" || die
+
+	## LibreWolf
+	# For some reason 'local-settings.js' doesn't get properly packaged.
+	# Install it manually
+	insinto "${MOZILLA_FIVE_HOME}/defaults/pref"
+	doins "${S}/lw/local-settings.js"
+
+	# Upstream cannot ship symlink but we can (bmo#658850)
+	rm "${ED}${MOZILLA_FIVE_HOME}/${PN}-bin" || die
+	dosym ${PN} ${MOZILLA_FIVE_HOME}/${PN}-bin
+
+	# Don't install llvm-symbolizer from llvm-core/llvm package
+	if [[ -f "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" ]] ; then
+		rm -v "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" || die
+	fi
+
+	## Disabled for LibreWolf
+	# Install policy (currently only used to disable application updates)
+	# insinto "${MOZILLA_FIVE_HOME}/distribution"
+	# newins "${FILESDIR}"/distribution.ini distribution.ini
+	# newins "${FILESDIR}"/disable-auto-update.policy.json policies.json
+
+	# Install system-wide preferences
+	local PREFS_DIR="${MOZILLA_FIVE_HOME}/browser/defaults/preferences"
+	insinto "${PREFS_DIR}"
+	newins "${FILESDIR}"/gentoo-default-prefs.js gentoo-prefs.js
+
+	local GENTOO_PREFS="${ED}${PREFS_DIR}/gentoo-prefs.js"
+
+	# Set dictionary path to use system hunspell
+	cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set spellchecker.dictionary_path pref"
+	pref("spellchecker.dictionary_path", "${EPREFIX}/usr/share/myspell");
+	EOF
+
+	# Force hwaccel prefs if USE=hwaccel is enabled
+	if use hwaccel ; then
+		cat "${FILESDIR}"/gentoo-hwaccel-prefs.js-r4 \
+		>>"${GENTOO_PREFS}" \
+		|| die "failed to add prefs to force hardware-accelerated rendering to all-gentoo.js"
+
+		if use wayland; then
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set hwaccel wayland prefs"
+			pref("gfx.x11-egl.force-enabled", false);
+			EOF
+		else
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set hwaccel x11 prefs"
+			pref("gfx.x11-egl.force-enabled", true);
+			EOF
+		fi
+
+		# Install the gfxtest binary on supported arches
+		exeinto "${MOZILLA_FIVE_HOME}"
+		doexe "${BUILD_DIR}"/dist/bin/gfxtest
+	fi
+
+	if ! use gmp-autoupdate ; then
+		local plugin
+		for plugin in "${MOZ_GMP_PLUGIN_LIST[@]}" ; do
+			einfo "Disabling auto-update for ${plugin} plugin ..."
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to disable autoupdate for ${plugin} media plugin"
+			pref("media.${plugin}.autoupdate", false);
+			EOF
+		done
+	fi
+
+	# Force the graphite pref if USE=system-harfbuzz is enabled, since the pref cannot disable it
+	if use system-harfbuzz ; then
+		cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set gfx.font_rendering.graphite.enabled pref"
+		sticky_pref("gfx.font_rendering.graphite.enabled", true);
+		EOF
+	fi
+
+	# Add telemetry config prefs, just in case something happens in future and telemetry build
+	# options stop working.
+	if ! use telemetry ; then
+		cat "${FILESDIR}"/gentoo-telemetry-prefs.js >>"${GENTOO_PREFS}" || die "failed to set telemetry prefs"
+	fi
+
+	# Install icons
+	local icon_srcdir="${S}/browser/branding/${PN}"
+
+	insinto /usr/share/icons/hicolor/symbolic/apps
+
+	local icon size
+	for icon in "${icon_srcdir}"/default*.png ; do
+		size=${icon%.png}
+		size=${size##*/default}
+
+		if [[ ${size} -eq 48 ]] ; then
+			newicon "${icon}" ${PN}.png
+		fi
+
+		newicon -s ${size} "${icon}" ${PN}.png
+	done
+
+	# Install menu
+	local app_name="LibreWolf"
+	local desktop_file="${FILESDIR}/icon/${MOZ_PN}-r3.desktop"
+	local desktop_filename="${PN}.desktop"
+	local exec_command="${PN}"
+	local icon="${PN}"
+	local use_wayland="false"
+
+	if use wayland ; then
+		use_wayland="true"
+	fi
+
+	cp "${desktop_file}" "${WORKDIR}/${PN}.desktop-template" || die
+
+	sed -i \
+		-e "s:@NAME@:${app_name}:" \
+		-e "s:@EXEC@:${exec_command}:" \
+		-e "s:@ICON@:${icon}:" \
+		"${WORKDIR}/${PN}.desktop-template" || die
+
+	newmenu "${WORKDIR}/${PN}.desktop-template" "${desktop_filename}"
+
+	rm "${WORKDIR}/${PN}.desktop-template" || die
+
+	if use jpegxl ; then
+		cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to enable jpegxl via pref"
+		pref("image.jxl.enabled", true);
+		EOF
+	fi
+
+	# Install wrapper script
+	[[ -f "${ED}/usr/bin/${PN}" ]] && rm "${ED}/usr/bin/${PN}"
+	newbin "${FILESDIR}/${MOZ_PN}-r1.sh" ${PN}
+
+	# Update wrapper
+	sed -i \
+		-e "s:@PREFIX@:${EPREFIX}/usr:" \
+		-e "s:@DEFAULT_WAYLAND@:${use_wayland}:" \
+		"${ED}/usr/bin/${PN}" || die
+
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	xdg_pkg_postinst
+
+	if ! use gmp-autoupdate ; then
+		elog "USE='-gmp-autoupdate' has disabled the following plugins from updating or"
+		elog "installing into new profiles:"
+		local plugin
+		for plugin in "${MOZ_GMP_PLUGIN_LIST[@]}" ; do
+			elog "\t ${plugin}"
+		done
+		elog
+	fi
+
+	readme.gentoo_print_elog
+
+	optfeature_header "Optional programs for extra features:"
+	optfeature "desktop notifications" x11-libs/libnotify
+	optfeature "fallback mouse cursor theme e.g. on WMs" gnome-base/gsettings-desktop-schemas
+	optfeature "screencasting with pipewire" sys-apps/xdg-desktop-portal
+
+	if ! has_version "sys-libs/glibc"; then
+		elog
+		elog "glibc not found! You won't be able to play DRM content."
+		elog "See Gentoo bug #910309 or upstream bug #1843683."
+		elog
+	fi
+}