4 files changed, 415 insertions, 2 deletions
diff --git a/dev-lang/spidermonkey/Manifest b/dev-lang/spidermonkey/Manifest
index bcf2c2a9e53f..b3b074343c07 100644
--- a/dev-lang/spidermonkey/Manifest
+++ b/dev-lang/spidermonkey/Manifest
@@ -1,8 +1,11 @@
+AUX spidermonkey-102-known-test-failures.txt 244 BLAKE2B 30d206d14bb4a5b2490a7dd315597cff8ab7dc065d1077a682da2b0617c7fac9e0d1c54c84af02eff700604a1ed6677650980dc935fdcc57ee06f5cdbe780098 SHA512 654689042df189ea24a9d8e572152a3ae473a142e77048e75e106cd4d3ade872fcbe5d4e1dc861ab557572b479ce47383bc1f191f22fda5b75cd2b1856c736fa
 AUX spidermonkey-60.5.2-ia64-fix-virtual-address-length.patch 2554 BLAKE2B d5759da22c521e389b8633aa2aa75e0a300af76f431a53c0bd445781002b0b7dd93543657cdf53afb12d87e4be1464584d5c3ccb30a2c9acc608aaeb1b2eb34f SHA512 d767cb00988772a0e5789d5b27aaaf0c0cc0124f4dd78ba67d2c4b4587c26346b01fc5b3d29f346e931dcd037ecefc8cec0d5c48510726a1841a6b6396c5507c
 AUX spidermonkey-60.5.2-ia64-support.patch 1615 BLAKE2B bd2ae36194bdb6a17638ec500e5211abb9700f2b7c5056b5be51e8e54d59326a5c9f0cb6d2d6fa56dd946dba264635e6d75e9b4ed52103c7904df19d33257c7d SHA512 71f2a0f27910ae086910f6599985a32ad2fdedeffc9c4c6baa446f4856dee74051fa158cc0552a3f21210098e0d006a0b5d781437fded80969e1edf23c04b9e0
 AUX spidermonkey-68.0-add-riscv-support.patch 4328 BLAKE2B 64ef005bff60ce3cc3e698a65494ef97441b9f27493bcbc7576286f6e06ce754dbcbcc8d9088ca88f6aa1a1ea7f008565922b5a4baf54019c64d8040c5b509f1 SHA512 70aad64600221f805f0fcd485b63c5383e9f160889b001963f5b6196d57672257c8ce02e75ad384bd2a0eeb9eeae0f7fc4820f1abcec3677f736cd60391f7d6f
 AUX spidermonkey-68.0-loong-support.patch 4156 BLAKE2B ed86f74240c1c7df0ae5012e80d3c4daec1083cdb48d3a985bdc4be287e591e536195ecc38a30f42bfa8d39ba3f46f2bef235ea2691687f7f33ba5f6052438b9 SHA512 0b8554b7afd35738ce9e2d2c71ea6658a680523160f5b05a7734ebdaccd6cdd288aa3168fd0a97318da88b2f149e6a4662b6069da1e805564b5320f674438e66
 AUX spidermonkey-91-known-test-failures.txt 8778 BLAKE2B e429909a6aa90dc6127ba957045d119d894f50fed508ee5ef47bdd163585987510c5cc0898f0d8af608a7ec3f8425a3b8d1073b6cfc1fda5196a81a1c255d885 SHA512 b2cb12abd942ecdfca641dcc63ac652574fbb010b78e4661c29e669d3beb2217f60904d61d5a574cf8d70040c2290672fbb410234f78f665b6bb63fefa0090ed
+DIST firefox-102.1.0esr.source.tar.xz 486756700 BLAKE2B d046c386f7c6822510fa309a5455cc80deaaf59a5cc274176a74b4dfe2feaa60140d3197f91c221338d7d96ddae48a411c4a376afa1db3ed6fc8688cf2f97119 SHA512 2505b87ce4115445568eb6b7d8af41678bd787fd07f3f79e9f0a22d90cdf752ae5d4371856cf9c56e2d9da7d5b7c3939dc2aab5753fcc017398e7d65260f6f03
+DIST firefox-102esr-patches-01j.tar.xz 16572 BLAKE2B 28be4564c6ae20cd44ee4034e61d594bc9d0d5ef06abca81e8d319fc629ee768adb662226acc69454b6875b033bce89b30da3679f3b9a53dbdc97d78f94a2b14 SHA512 36ec59f1ea88513c69bc1b42b47b639510b91cfe59fc80da393bc89c239024af2a9787e33b49e73d380b3c07603ea7b6c95fb435416f25c1baa285b4e0462679
 DIST firefox-68.0-patches-15.tar.xz 16060 BLAKE2B f9e6cd58ea51bed1af90a9d30fd551dc7e939afcd1b4d00de1271bd4bda94021c6f1799fd9945962c14ffa1fd0b6a6429369c4e45efc2000f179b9b2e46971e7 SHA512 9cb2479637dd8b84e0ab68dc0fe144acd2dc74feca282fd3c4b485ca6f0de8190244587622713a5421b243ccda153f738e9a8f463e87e15e93e9b725d943e128
 DIST firefox-68.12.0esr.source.tar.xz 313856956 BLAKE2B eeaa4acc9fabf15ec1b313170a30cee8e1fc10a8b08512b915b83b7d6a81c09b365733ed94638bd434864fd7b0cb8cbf1bc2e43441be69e31117e8e6a099234c SHA512 839b02422e4c87bdb12e0995cd35ca8c1996f3fba00bbb46b419e46b67df5ec48a264cb14632db777ce29166ee4fdcb06e2ee3ce847e64328c58c9a2f9129f4c
 DIST firefox-78.15.0esr.source.tar.xz 330819568 BLAKE2B dc8785613c2f72c55d484642c89c2545765a9efbd609bc7c2cf57b4a3a06a2ea22e6959e42b5b8af867db782e8b2097a67dec858796b744e47008a8e575e2316 SHA512 ac3de735b246ce4f0e1619cd2664321ffa374240ce6843e785d79a350dc30c967996bbcc5e3b301cb3d822ca981cbea116758fc4122f1738d75ddfd1165b6378
@@ -11,13 +14,15 @@ DIST firefox-91.11.0esr.source.tar.xz 384459848 BLAKE2B cff327378a1712d0dfb99e1a
 DIST firefox-91.12.0esr.source.tar.xz 379877004 BLAKE2B c00e5cc219c59d8347a69e5236a4a4f439d9caae6ab7dabc3ed8c8f9a096ded26ec1ffb53b015b86481f1d43ec4f263bb8acbd841ebf36e8a741d73e12a0a914 SHA512 323fb752488b45872b40f0b0ee1d8c1dffa16874dbff2afde19a54286c824ef48177233e029faeafa5946184e71c31c6bc5ba7ec17a571e21af64fc5f7334042
 DIST firefox-91esr-patches-10j.tar.xz 18320 BLAKE2B ec882411eed19bafab8676e3d79f4ae43947bb97c44571c1497bb93a44fcfec99de06ebacbdf8c4944dcecdf949e4f684908d7ce4226cdcec60241e62e75810e SHA512 670a14d852bb74b9074c3fef9310650f71ce1c56314109c49aea02a7a69acc836af60a8beab11da53e21b10a8e6da341fcfa18b68a1dfd33b26978dd63758e9c
 DIST mozjs-60.5.2.tar.bz2 32816585 BLAKE2B 45ac4c9646e1275faf60eeedbf486f802cd106583eb7f640fe2243adc7cbb811dced5cefa94426cceca63468b0112be84078ffcef24cb2b8c1a7b6c8173c0d45 SHA512 5fb73330e7803bdd524fbe7cfdf4e6b72e85d4b22b0c827400317b5d052d1088d36e558ceac376393089e9d03e658b24e69262851fc04a66bbcda47135423dc0
+DIST spidermonkey-102-patches-01j.tar.xz 5208 BLAKE2B abac43e27efa1501968dcf50f8a05a95e7f1107c1b1b4f4bc5ffa2b6ba5968b29dbafbcd8ff3c11e44c2d8ab31fff538ad076dfd55a5ff9951cc019ce11756b2 SHA512 003217c05be67d03b59a1b9ed536079c19b07b90e7279ef362d6d95cdb8bcdadd2ee87ffd9b22cfe05a395adf082a20ecae3e0e94d4971b298cd88015f3918c7
 DIST spidermonkey-60.0-patches-04.tar.xz 4428 BLAKE2B af78049cd9b3ee6a9b689e6253486c4670fd3b506faade7d745dafaa7af329c0bd15cd35e95528a4c96688230f4803130967fb09b97aae2bda0ce0f73acaaf3e SHA512 fb1326a81512146ba98773d4f7e0c4bc1bff0f076897c13f576fcf63b56f6965efeff633eea9160bca9f9bc4546505901084eabc33bc955de0b7ab3d6334387a
 DIST spidermonkey-68.6.0-patches-04.tar.xz 5956 BLAKE2B b1250391a5173e676272d5926b710c06b0e9de1ff03b130a57fdac30f2deefbee3fa92250b37e28087572fe5cce73eb112ef4e1fb0c0401d6ecdb22ab9868998 SHA512 94575b11b4f006c6ee0c8d64b315734a173cecb68e9128ca61ba1a28177e3c149b8cf1f3b3c47a7a263fad8da6196fc0101df87392f016686a827e0cd24fdc74
 DIST spidermonkey-78-patches-04.tar.xz 3408 BLAKE2B f2fdd4882e1e4de1908c458dc8dfedd5665ef7118f19704dabf2b2a80e2fae48813e9bc3d0c3410287e32c21e3f9d09233d8e5d15917f53aa2f60e6190cd9cdb SHA512 87ac83c0ccc05f482913b1fbf043db1878536f935f934362a47283809c0cbfdeff040206a9c18c687384b606ba8a7bd9a7c1fc3c0bcfdd620987990a33ca1fe2
 DIST spidermonkey-91-patches-04j.tar.xz 4624 BLAKE2B d9cf47b39a165e8434d4f2f20ae3a9734c1bb81c32ddb75360e5edfa6817d6343be89aff0f8ec381485772cad80b00a069789decbc462129161afc3d4acfcb53 SHA512 bd574fee600cb4c6a262893b7d992d85c4059d512b829cd2f226aff86d8a6a83c2bdab466704e22f64bf6d29f90901037a34f9e90a42251952ba1cdbc0cab968
+EBUILD spidermonkey-102.1.0.ebuild 10961 BLAKE2B 3b5c5cce4e7bf6b064e2f5c9a4409d9dfb80855d321d361af125d6461b34c13076caccea13628748ac9587956754f27180e18bdfb86e9190626fd671c89058db SHA512 b63bd76abbbad6ba1331952f34d444d0b31080b56daebb24d7bebd2569074c32e034a9d0944f60463b91213630fd88179febed0d3b642578cf09c08bb7db181c
 EBUILD spidermonkey-60.5.2_p0-r6.ebuild 4080 BLAKE2B 7269a944ab109fa27ee80016d44c4c71d91c0f230fbea9704ba468bff06d62c2740af3cce4ce7c39179dca6be7c74b3eb62b877e7f7db2c7a6e7314e0361401c SHA512 971cbfaad2aabaf43b6f528bc67f5bb207bf53bc4d9bd19d8d21948ad6e055a8f3aa0f059028db13c95740fef3ebc9257a1ab2813131180dfb5c7b2306b66e2b
 EBUILD spidermonkey-68.12.0-r1.ebuild 7834 BLAKE2B 35252f841078dc8b0f06c2c2dab0d0a17abbfa23f025c3b2534232a82951298722a7ee5c3c7bcd56055879c5a886961a8ac34bb325fca7a466dc7d59f7b391ec SHA512 4ecbf27cddb67cdef15aa2c93cb4acfb4851973a07b7b9040186555027f5bc4d7126351b5bb1646640d0493afa78e63151d39b0bf37a6899c87ff20a7ea22198
-EBUILD spidermonkey-78.15.0.ebuild 13041 BLAKE2B aef027a6499b02cc44e1fc1eda7d60b74542590513147ff47978786f14ac8afbf636f8ebb86fcbd0ac0d6f30130d5ff679df7342215bf0126c21db343591c905 SHA512 bcce7f25a9791a0bafcb1f9ecbca883a96dd677ab6c184370f791b1463c3eba6bf57be17e5f1bbcb6b52814600ffe18d3d0d7453eeb18f1cd96087925b2aca02
+EBUILD spidermonkey-78.15.0.ebuild 13048 BLAKE2B 2934c9570d692e80dd5684478b9ce72894a77fb5a80a3ee0bb2f6190a513247a1183a2dc5d832e2c7c83b658fe4aac51d05b691cb78bdd4279563e3e8587e9cb SHA512 eab195173ae5ee5b73143974ddfffda0e45267f8770cee29c6990b0359796d71497c0231ae08ef503623bc8c6fd8611de03ed218b68807bb59a407fc5dd14b2d
 EBUILD spidermonkey-91.11.0.ebuild 15073 BLAKE2B 95e0ee862be50ad1d6543ee4466a40ea73715bb7dc5b9e101c613cc9dff72d88c6448d0eaabad578492596c4ce3f25c9eeebf40b795e7603d6b6b822f6ffab36 SHA512 7ca5e1cee8c04039663cdea7462bfdf7b51b461e56fa25b4c06ddb638b85188bdfc5992c383b3a19fdf9593ffde82dbbf841dd6dddeb1a74116e4949cc9d41e7
 EBUILD spidermonkey-91.12.0.ebuild 15078 BLAKE2B 55dc6759554809c2b6c9232689e892166541bad27be7fafec13e35c185053369eed5c61b014fea23404c822641ebe38030dc1cec9c7e88b5cff929eef43f1b2c SHA512 62144ba5c276d40b9f4603f295cbf794b55296e6c1afe9772f06c925ceec2cc9284d3008df59ad5d093e977181295787073b806c7694b6e0751c47f0c2eaeb61
 MISC metadata.xml 869 BLAKE2B 79d6ea91e84e3bb666797cde6b2993282ff1b4266dfa835eaf02d8aa65d5d000729b149a49c9fa5c8dbf12e4b97b46d976243c888834db9df73a8a5c814aa610 SHA512 f78399a1ad88583c50ad1e967f5ba293cdfff7d58cf26b87bd8888c7102b62d42ef1982d1b8462f3d31f0806b6cead8db28b7f0c7b12c08d3871607b5a4c63cc
diff --git a/dev-lang/spidermonkey/files/spidermonkey-102-known-test-failures.txt b/dev-lang/spidermonkey/files/spidermonkey-102-known-test-failures.txt
new file mode 100644
index 000000000000..e3ba380635b8
--- /dev/null
+++ b/dev-lang/spidermonkey/files/spidermonkey-102-known-test-failures.txt
@@ -0,0 +1,5 @@
+non262/Intl/available-locales-supported.js
+non262/Intl/available-locales-resolved.js
+non262/Intl/DateTimeFormat/fractional-second-digits-append-item.js
+non262/Intl/DateTimeFormat/day-period-hour-cycle.js
+non262/Date/time-zone-etc_localetime.js
diff --git a/dev-lang/spidermonkey/spidermonkey-102.1.0.ebuild b/dev-lang/spidermonkey/spidermonkey-102.1.0.ebuild
new file mode 100644
index 000000000000..ffb342118c01
--- /dev/null
+++ b/dev-lang/spidermonkey/spidermonkey-102.1.0.ebuild
@@ -0,0 +1,403 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="8"
+
+# Patch version
+FIREFOX_PATCHSET="firefox-102esr-patches-01j.tar.xz"
+SPIDERMONKEY_PATCHSET="spidermonkey-102-patches-01j.tar.xz"
+
+LLVM_MAX_SLOT=14
+
+PYTHON_COMPAT=( python3_{8..11} )
+PYTHON_REQ_USE="ssl,xml(+)"
+
+WANT_AUTOCONF="2.1"
+
+inherit autotools check-reqs flag-o-matic llvm multiprocessing prefix python-any-r1 toolchain-funcs
+
+MY_PN="mozjs"
+MY_PV="${PV/_pre*}" # Handle Gentoo pre-releases
+
+MY_MAJOR=$(ver_cut 1)
+
+MOZ_ESR=yes
+
+MOZ_PV=${PV}
+MOZ_PV_SUFFIX=
+if [[ ${PV} =~ (_(alpha|beta|rc).*)$ ]] ; then
+	MOZ_PV_SUFFIX=${BASH_REMATCH[1]}
+
+	# Convert the ebuild version to the upstream Mozilla version
+	MOZ_PV="${MOZ_PV/_alpha/a}" # Handle alpha for SRC_URI
+	MOZ_PV="${MOZ_PV/_beta/b}"  # Handle beta for SRC_URI
+	MOZ_PV="${MOZ_PV%%_rc*}"    # Handle rc for SRC_URI
+fi
+
+if [[ -n ${MOZ_ESR} ]] ; then
+	# ESR releases have slightly different version numbers
+	MOZ_PV="${MOZ_PV}esr"
+fi
+
+MOZ_PN="firefox"
+MOZ_P="${MOZ_PN}-${MOZ_PV}"
+MOZ_PV_DISTFILES="${MOZ_PV}${MOZ_PV_SUFFIX}"
+MOZ_P_DISTFILES="${MOZ_PN}-${MOZ_PV_DISTFILES}"
+
+MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/releases/${MOZ_PV}"
+
+if [[ ${PV} == *_rc* ]] ; then
+	MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/candidates/${MOZ_PV}-candidates/build${PV##*_rc}"
+fi
+
+PATCH_URIS=(
+	https://dev.gentoo.org/~{juippis,whissi}/mozilla/patchsets/${FIREFOX_PATCHSET}
+	https://dev.gentoo.org/~{juippis,whissi}/mozilla/patchsets/${SPIDERMONKEY_PATCHSET}
+)
+
+SRC_URI="${MOZ_SRC_BASE_URI}/source/${MOZ_P}.source.tar.xz -> ${MOZ_P_DISTFILES}.source.tar.xz
+	${PATCH_URIS[@]}"
+
+DESCRIPTION="SpiderMonkey is Mozilla's JavaScript engine written in C and C++"
+HOMEPAGE="https://spidermonkey.dev https://firefox-source-docs.mozilla.org/js/index.html "
+
+KEYWORDS="~amd64 ~arm ~arm64 ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+
+SLOT="$(ver_cut 1)"
+LICENSE="MPL-2.0"
+IUSE="clang cpu_flags_arm_neon debug +jit lto test"
+
+#RESTRICT="test"
+RESTRICT="!test? ( test )"
+
+BDEPEND="${PYTHON_DEPS}
+	>=virtual/rust-1.51.0
+	virtual/pkgconfig
+	test? (
+		$(python_gen_any_dep 'dev-python/six[${PYTHON_USEDEP}]')
+	)
+	|| (
+		(
+			sys-devel/llvm:14
+			clang? (
+				sys-devel/clang:14
+				lto? ( =sys-devel/lld-14* )
+			)
+		)
+		(
+			sys-devel/llvm:13
+			clang? (
+				sys-devel/clang:13
+				lto? ( =sys-devel/lld-13* )
+			)
+		)
+	)"
+DEPEND=">=dev-libs/icu-71.1:=
+	dev-libs/nspr
+	sys-libs/readline:0=
+	sys-libs/zlib"
+RDEPEND="${DEPEND}"
+
+S="${WORKDIR}/firefox-${MY_PV}/js/src"
+
+llvm_check_deps() {
+	if ! has_version -b "sys-devel/llvm:${LLVM_SLOT}" ; then
+		einfo "sys-devel/llvm:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	if use clang ; then
+		if ! has_version -b "sys-devel/clang:${LLVM_SLOT}" ; then
+			einfo "sys-devel/clang:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+
+		if use lto ; then
+			if ! has_version -b "=sys-devel/lld-${LLVM_SLOT}*" ; then
+				einfo "=sys-devel/lld-${LLVM_SLOT}* is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+				return 1
+			fi
+		fi
+	fi
+
+	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
+}
+
+python_check_deps() {
+	if use test ; then
+		python_has_version "dev-python/six[${PYTHON_USEDEP}]"
+	fi
+}
+
+pkg_pretend() {
+	if use test ; then
+		CHECKREQS_DISK_BUILD="7600M"
+	else
+		CHECKREQS_DISK_BUILD="6400M"
+	fi
+
+	check-reqs_pkg_pretend
+}
+
+pkg_setup() {
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+		if use test ; then
+			CHECKREQS_DISK_BUILD="7600M"
+		else
+			CHECKREQS_DISK_BUILD="6400M"
+		fi
+
+		check-reqs_pkg_setup
+
+		llvm_pkg_setup
+
+		if use clang && use lto ; then
+			local version_lld=$(ld.lld --version 2>/dev/null | awk '{ print $2 }')
+			[[ -n ${version_lld} ]] && version_lld=$(ver_cut 1 "${version_lld}")
+			[[ -z ${version_lld} ]] && die "Failed to read ld.lld version!"
+
+			local version_llvm_rust=$(rustc -Vv 2>/dev/null | grep -F -- 'LLVM version:' | awk '{ print $3 }')
+			[[ -n ${version_llvm_rust} ]] && version_llvm_rust=$(ver_cut 1 "${version_llvm_rust}")
+			[[ -z ${version_llvm_rust} ]] && die "Failed to read used LLVM version from rustc!"
+
+			if ver_test "${version_lld}" -ne "${version_llvm_rust}" ; then
+				eerror "Rust is using LLVM version ${version_llvm_rust} but ld.lld version belongs to LLVM version ${version_lld}."
+				eerror "You will be unable to link ${CATEGORY}/${PN}. To proceed you have the following options:"
+				eerror "  - Manually switch rust version using 'eselect rust' to match used LLVM version"
+				eerror "  - Switch to dev-lang/rust[system-llvm] which will guarantee matching version"
+				eerror "  - Build ${CATEGORY}/${PN} without USE=lto"
+				eerror "  - Rebuild lld with llvm that was used to build rust (may need to rebuild the whole "
+				eerror "    llvm/clang/lld/rust chain depending on your @world updates)"
+				die "LLVM version used by Rust (${version_llvm_rust}) does not match with ld.lld version (${version_lld})!"
+			fi
+		fi
+
+		python-any-r1_pkg_setup
+
+		# Build system is using /proc/self/oom_score_adj, bug #604394
+		addpredict /proc/self/oom_score_adj
+
+		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
+
+		# Ensure we use C locale when building, bug #746215
+		export LC_ALL=C
+	fi
+}
+
+src_prepare() {
+	pushd ../.. &>/dev/null || die
+
+	use lto && rm -v "${WORKDIR}"/firefox-patches/*-LTO-Only-enable-LTO-*.patch
+
+	eapply "${WORKDIR}"/firefox-patches
+	eapply "${WORKDIR}"/spidermonkey-patches
+
+	default
+
+	# Make cargo respect MAKEOPTS
+	export CARGO_BUILD_JOBS="$(makeopts_jobs)"
+
+	# sed-in toolchain prefix
+	sed -i \
+		-e "s/objdump/${CHOST}-objdump/" \
+		python/mozbuild/mozbuild/configure/check_debug_ranges.py \
+		|| die "sed failed to set toolchain prefix"
+
+	# use prefix shell in wrapper linker scripts, bug #789660
+	hprefixify "${S}"/../../build/cargo-{,host-}linker
+
+	einfo "Removing pre-built binaries ..."
+	find third_party -type f \( -name '*.so' -o -name '*.o' \) -print -delete || die
+
+	MOZJS_BUILDDIR="${WORKDIR}/build"
+	mkdir "${MOZJS_BUILDDIR}" || die
+
+	popd &>/dev/null || die
+	eautoconf
+}
+
+src_configure() {
+	# Show flags set at the beginning
+	einfo "Current CFLAGS:    ${CFLAGS}"
+	einfo "Current CXXFLAGS:  ${CXXFLAGS}"
+	einfo "Current LDFLAGS:   ${LDFLAGS}"
+	einfo "Current RUSTFLAGS: ${RUSTFLAGS}"
+
+	local have_switched_compiler=
+	if use clang && ! tc-is-clang ; then
+		# Force clang
+		einfo "Enforcing the use of clang due to USE=clang ..."
+		have_switched_compiler=yes
+		AR=llvm-ar
+		AS=llvm-as
+		CC=${CHOST}-clang
+		CXX=${CHOST}-clang++
+		NM=llvm-nm
+		RANLIB=llvm-ranlib
+	elif ! use clang && ! tc-is-gcc ; then
+		# Force gcc
+		have_switched_compiler=yes
+		einfo "Enforcing the use of gcc due to USE=-clang ..."
+		AR=gcc-ar
+		CC=${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
+	export HOST_CC="$(tc-getBUILD_CC)"
+	export HOST_CXX="$(tc-getBUILD_CXX)"
+	tc-export CC CXX LD AR NM OBJDUMP RANLIB PKG_CONFIG
+
+	cd "${MOZJS_BUILDDIR}" || die
+
+	# ../python/mach/mach/mixin/process.py fails to detect SHELL
+	export SHELL="${EPREFIX}/bin/bash"
+
+	local -a myeconfargs=(
+		--host="${CBUILD:-${CHOST}}"
+		--target="${CHOST}"
+
+		--disable-ctype
+		--disable-jemalloc
+		--disable-optimize
+		--disable-smoosh
+		--disable-strip
+
+		--enable-readline
+		--enable-release
+		--enable-shared-js
+
+		--with-intl-api
+		--with-system-icu
+		--with-system-nspr
+		--with-system-zlib
+		--with-toolchain-prefix="${CHOST}-"
+
+		$(use_enable debug)
+		$(use_enable jit)
+		$(use_enable test tests)
+	)
+
+	if ! use x86 && [[ ${CHOST} != armv*h* ]] ; then
+		myeconfargs+=( --enable-rust-simd )
+	fi
+
+	# Modifications to better support ARM, bug 717344
+	if use cpu_flags_arm_neon ; then
+		myeconfargs+=( --with-fpu=neon )
+
+		if ! tc-is-clang ; then
+			# thumb options aren't supported when using clang, bug 666966
+			myeconfargs+=( --with-thumb=yes )
+			myeconfargs+=( --with-thumb-interwork=no )
+		fi
+	fi
+
+	# Tell build system that we want to use LTO
+	if use lto ; then
+		if use clang ; then
+			myeconfargs+=( --enable-linker=lld )
+			myeconfargs+=( --enable-lto=cross )
+		else
+			myeconfargs+=( --enable-linker=bfd )
+			myeconfargs+=( --enable-lto=full )
+		fi
+	fi
+
+	# LTO flag was handled via configure
+	filter-flags '-flto*'
+
+	if tc-is-gcc ; then
+		if ver_test $(gcc-fullversion) -ge 10 ; then
+			einfo "Forcing -fno-tree-loop-vectorize to workaround GCC bug, see bug 758446 ..."
+			append-cxxflags -fno-tree-loop-vectorize
+		fi
+	fi
+
+	export MACH_USE_SYSTEM_PYTHON=1
+	export PIP_NO_CACHE_DIR=off
+
+	# Show flags we will use
+	einfo "Build CFLAGS:    ${CFLAGS}"
+	einfo "Build CXXFLAGS:  ${CXXFLAGS}"
+	einfo "Build LDFLAGS:   ${LDFLAGS}"
+	einfo "Build RUSTFLAGS: ${RUSTFLAGS}"
+
+	# Forcing system-icu allows us to skip patching bundled ICU for PPC
+	# and other minor arches
+	ECONF_SOURCE="${S}" \
+		econf \
+		${myeconfargs[@]} \
+		XARGS="${EPREFIX}/usr/bin/xargs"
+}
+
+src_compile() {
+	cd "${MOZJS_BUILDDIR}" || die
+	default
+}
+
+src_test() {
+	if "${MOZJS_BUILDDIR}/js/src/js" -e 'print("Hello world!")'; then
+		einfo "Smoke-test successful, continuing with full test suite"
+	else
+		die "Smoke-test failed: did interpreter initialization fail?"
+	fi
+
+	cp "${FILESDIR}"/spidermonkey-${SLOT}-known-test-failures.txt "${T}"/known_failures.list || die
+
+	if [[ $(tc-endian) == "big" ]] ; then
+		echo "non262/extensions/clone-errors.js" >> "${T}"/known_failures.list
+		echo "test262/built-ins/Date/UTC/fp-evaluation-order.js" >> "${T}"/known_failures.list
+		echo "test262/built-ins/TypedArray/prototype/set/typedarray-arg-set-values-same-buffer-other-type.js" >> "${T}"/known_failures.list
+	fi
+
+	${EPYTHON} \
+		"${S}"/tests/jstests.py -d -s -t 1800 --wpt=disabled --no-progress \
+		--exclude-file="${T}"/known_failures.list \
+		"${MOZJS_BUILDDIR}"/js/src/js \
+		|| die
+
+	if use jit ; then
+		${EPYTHON} \
+			"${S}"/tests/jstests.py -d -s -t 1800 --wpt=disabled --no-progress \
+			--exclude-file="${T}"/known_failures.list \
+			"${MOZJS_BUILDDIR}"/js/src/js basic \
+			|| die
+	fi
+}
+
+src_install() {
+	cd "${MOZJS_BUILDDIR}" || die
+	default
+
+	# fix soname links
+	pushd "${ED}"/usr/$(get_libdir) &>/dev/null || die
+	mv lib${MY_PN}-${MY_MAJOR}.so lib${MY_PN}-${MY_MAJOR}.so.0.0.0 || die
+	ln -s lib${MY_PN}-${MY_MAJOR}.so.0.0.0 lib${MY_PN}-${MY_MAJOR}.so.0 || die
+	ln -s lib${MY_PN}-${MY_MAJOR}.so.0 lib${MY_PN}-${MY_MAJOR}.so || die
+	popd &>/dev/null || die
+
+	# remove unneeded files
+	rm \
+		"${ED}"/usr/bin/js${MY_MAJOR}-config \
+		"${ED}"/usr/$(get_libdir)/libjs_static.ajs \
+		|| die
+
+	# fix permissions
+	chmod -x \
+		"${ED}"/usr/$(get_libdir)/pkgconfig/*.pc \
+		"${ED}"/usr/include/mozjs-${MY_MAJOR}/js-config.h \
+		|| die
+}
diff --git a/dev-lang/spidermonkey/spidermonkey-78.15.0.ebuild b/dev-lang/spidermonkey/spidermonkey-78.15.0.ebuild
index 8cfe7c8bb1ba..909743ac2f47 100644
--- a/dev-lang/spidermonkey/spidermonkey-78.15.0.ebuild
+++ b/dev-lang/spidermonkey/spidermonkey-78.15.0.ebuild
@@ -61,7 +61,7 @@ SRC_URI="${MOZ_SRC_BASE_URI}/source/${MOZ_P}.source.tar.xz -> ${MOZ_P_DISTFILES}
 DESCRIPTION="SpiderMonkey is Mozilla's JavaScript engine written in C and C++"
 HOMEPAGE="https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey"
 
-KEYWORDS="amd64 arm arm64 ~mips ~ppc ppc64 ~riscv x86"
+KEYWORDS="amd64 arm arm64 ~mips ~ppc ppc64 ~riscv ~sparc x86"
 
 SLOT="78"
 LICENSE="MPL-2.0"