mail-client/thunderbird: add 128.4.0

 - sync changes from firefox-esr: add support for llvm-19, toggle clang use
   flag off to make gcc the default compiler, filter some lto-related flags
   that turn warnings into errors as they break on gcc (lto still works on
   gcc), clear apulse-related messages.

Signed-off-by: Joonas Niilola <juippis@gentoo.org>

2 files changed, 1228 insertions, 0 deletions

diff --git a/mail-client/thunderbird/Manifest b/mail-client/thunderbird/Manifest
index 1a08adc4a9bd..d2f669dc638c 100644
--- a/mail-client/thunderbird/Manifest
+++ b/mail-client/thunderbird/Manifest
@@ -1,4 +1,5 @@
 DIST firefox-128esr-patches-03.tar.xz 14156 BLAKE2B 9a618f0ddb8596b740893dc9113f374d193a00e4e8e76dbb2794928ceaafc7b5309cb6f69f6287ae1e423f0be0a060580b0d9d59307c9889362dd17fb7d31d3d SHA512 c6ec7233b368fac623ec0cce6f5c37d358a0fa5bb2154dc67eebb50968376ca9d46f3a734f5d79a4aa4edde9e300a9c65315d0e499aa6a1325b6c76a6c164258
+DIST firefox-128esr-patches-04.tar.xz 14416 BLAKE2B 0ffe3fd568480e37fe28fe71d5304e51028dcb8cb2d5fc1d838d725bdd36971696d7152c37bd90f7802c75e696aef0b1b075d386a906b40635f25083a6a58239 SHA512 adbac956dc2d6c1c29fb6641a42096bfd033a662f69e177f8d75a928f46d30fbc811e8a9ca24de8c7eb675ee80f6c1187f1a13dbca8e75782abfd54e276f5854
 DIST thunderbird-128.3.1esr-af.xpi 530350 BLAKE2B 579853b1d476b123c34b6207dc2e35f994bb3638773d656f98dccf3dddb4888785b883dde93c6d22b3cf47aa6d058b9446ac2d051e2b748f0730ef9886bdad44 SHA512 94fc0d5210f0cb39fb4e7c8b97b467c6a8cb6d6fbebf813cec3c59c9b485bc343f04f47c7ce8c85debae1d75c9fed4c6bf0b79ea901014b401ecfa947627e602
 DIST thunderbird-128.3.1esr-ar.xpi 679867 BLAKE2B 0643cd7085e093ccc2a381d1a1d71782942dc900e4451805773725731964d1b9ec981f5f7c6912759e22a2955e5a9d0acca71b5b8c54e262cf3d9b5b105b76ee SHA512 51ddb27f1411b867ab83c0dc92449a223a4fc5597fa1041f7a477859cb149f128ae0d7a5d25b178bb5b15a6384145eb9a20a5b60945778d11ca6db3280508c2d
 DIST thunderbird-128.3.1esr-ast.xpi 561054 BLAKE2B 932789c16556c4503ecda989c5a3bdcd052626f1cebefc11e50e22a04581f052785badef76d03b6a51bd1e73a62b92c2697604baae77fc04c2ec472c207d1dab SHA512 6c7b68f2ed1e346c294890868710b8ed60226df6f147aa78a1a5ce28b5bccd20456d85bca59d02917bf954ea4eee10d1a9b1265e1cd773c99959661f0b9ef39f
@@ -129,3 +130,68 @@ DIST thunderbird-128.3.3esr-vi.xpi 789696 BLAKE2B 221dd1c72bd996ef37069ce6a1d66a
 DIST thunderbird-128.3.3esr-zh-CN.xpi 788219 BLAKE2B e458aefb20f27dca6d0c9cdd27981e7485438d6d3d5e34c70b912d7845da012f3c473a2403718c30bca617c54b4cf1a0832ee357b494478a1ab4194e3d733f9d SHA512 2a026f1500d2a7342ebae47938b87c39146b8e0c1f371142b29af5f953d5fe4d9d4d9d1c45f04eea0a70a85830db41f7dcb3d3c7d7a0114d37e785e1a94e38d2
 DIST thunderbird-128.3.3esr-zh-TW.xpi 792579 BLAKE2B 8f4520ac3bd42a941b5f111bc3ad8a750aa6377eed534c17293f99d23fc9c500d60afef337b96973f316a852139bbd4ca67698bd18ebde408efe8e3bd1f50fba SHA512 89c9b6b465ae023f92f0f329a9e3d473db135f0a0915dd4ed6f51a26a6cfdbf93595a3480c85d7d037218af030e185558b6986f22f6f81c27ebf79239c43c62a
 DIST thunderbird-128.3.3esr.source.tar.xz 679424276 BLAKE2B 41a14aec99fe13a980f0ace5f9670cfcfa946d860a010fd4b0601c7b1b44c62cb466f0e5774a6353b2b4e2b2535247bc966ef14fbcc7f024dfa175871921627f SHA512 53a5bfacebb4d532f1a66502493e8641c59ce3ebe81530db7c5f9fb75a18db54211a2a4641e1aab96ffed127658a212334fa1a651a575c270118d0eed0a93c27
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+DIST thunderbird-128.4.0esr-it.xpi 694515 BLAKE2B ab0291fa95c630bdc8aa1496c568d8096d90f9e5102d17f4f48633c4178d87b51a6daf8b636e8e261179827546004f3629a23e38b0475ff83f23ccdcbcb005d5 SHA512 38778d844b7a3cb4edf98a00082c7439f47aa7e98b28c9268a8c833e37f4f4a3ddee8270628eca2b1383236d6ba3b20c8bbf1134351128b25bc09e6d01d064af
+DIST thunderbird-128.4.0esr-ja.xpi 824168 BLAKE2B 962ceba03c4ca34dad207625956acfda08d33283e2cee26d43c827f83b6fbd492ba07a101c877e7a619f4383f0893f6b046170cab75e767df499113be651f37c SHA512 064cd1083907fa0c09c41bf248e1d24e1e93e39320f3e646e516f900c61ea7b03c4e0d7a2b2e3716fd03a87bcba7d5e48dc068671587501f7e6d1b8275f534aa
+DIST thunderbird-128.4.0esr-ka.xpi 796223 BLAKE2B be450c7adf2b87c74b1148cbac80752cc2888d32be0326abab5bc0807617acd893f3789fe5dadf17c382f16e843f79f761a5b318e27d26495a7c3aa2b53aae4b SHA512 ebba879b83bf8436187d65175c7fa9437e5c3082a4ca534dca4f307f96d1e256d377e6fee8bac3914981960c50e32d1c708a427cc22b6f2ac613c099b23f9160
+DIST thunderbird-128.4.0esr-kab.xpi 733900 BLAKE2B 0e10f6c7a720892841c4e2da6909c26fd2f7e1c9908a6d55d1057d68c2925d5c792f6fb3167d8a1a2e966fd7a160a743cda9e9e65850dd6a1561cc7495ce2973 SHA512 cffec8f6690dec6f84c1169674a050525dfca5e5f09fea89d1c857a294622b1bf51dbb99b525dde3ec3221f0abc8cd2e7765937123317445d4c7fb58d8b99608
+DIST thunderbird-128.4.0esr-kk.xpi 860677 BLAKE2B 1ca365fbbba9d9c616704bf08cee6ca705137c5664bd5958f41c7cdeb7f0ae8e4ea3fe358e2e5eacb34f8b5c724f66d31dfc6655c5880828f91942609aec6fc2 SHA512 8463e6c281af8e5ef5499c2b3045c179ee0706e291a95fd3e3ba4c00d06bf55670b10fafe8f7f3164b64555114e229caaaa0ad3abb701122d42dc099a7b35bf9
+DIST thunderbird-128.4.0esr-ko.xpi 756769 BLAKE2B 5396865ab184420cbf2dffcf5ff9d78af1cbb14e087a3acc0c637544499948f39e2bd5259c008daf7d2bd0353179ef4f92e5523df410267725ad6ef25b7c1c34 SHA512 14f151d74819b5863597555047d5f82a8a9e5cd48b03d72910b63ee2ec7f13796e1dc258d272f8e61c6ce7b2dc898dee98650e28a318398b972d9953fc4cfd67
+DIST thunderbird-128.4.0esr-lt.xpi 700919 BLAKE2B 5ef1bde7ffdf4aeebfbace9e0b77dca3672f995a07655d1e588a2130cf6c9416c4764ee57b846079eeb532f94c541fba57bfd20ad5ebbcec20c06985be868121 SHA512 448bc7d78a4d2fa9ca7eb3cafd3dde2814d99e319d5250c1315a9d288db7673ea3a287b97537974f3ae6e57781549deb4fafffd4e2e7fa5702c551c4e41c08d8
+DIST thunderbird-128.4.0esr-lv.xpi 625981 BLAKE2B 74ddf507d9c9a72fc29f65dc99e1677e0043f72f2c27e54e7f75301c36cd678a20ed59719f4b5646947d66c725f2b675461c529bda59b42750033816a1809408 SHA512 0428c4a8f0f6b8b25eef97514ed95046e57e83049ca3c97a31650f922fc93f5a88bd923ca96f699545643bfaa2d29316d43f24efd6cd1a059cceea0f0226973d
+DIST thunderbird-128.4.0esr-ms.xpi 581082 BLAKE2B 5dca2a199ead8c3078e360615355050f580948e0458baadf23cfac17e6cd5ee5e755dcb40367794dc42022f9d9d71ae43411b421db14f0bd77ab7656111cd8c1 SHA512 a9a6b3fb5868075282a35e2bb8596199559b4ee81d59df65fb96d47faad3007b493e54b6518a666628da775f578ea5ec1f07bab1e4f2ebfd583c1904c0332b04
+DIST thunderbird-128.4.0esr-nb-NO.xpi 706103 BLAKE2B c11bd7b4942b1233aaf0168d05fb6e66be5a1ae9db02ff737d66779ef5a6dcbde38aebc5578fbabfc65e55927c2abc459c8cd57132265c00024d85e4cbe74c04 SHA512 5088abae8e3643feabed92a929f24bd33ad04a570667aa196cb039924d0764ebe58b97605d28dd5082053689bce18e7d143c2ca6984f92b824d286fc76986a27
+DIST thunderbird-128.4.0esr-nl.xpi 748486 BLAKE2B c6ffa2baca9cab103a0583807a286db7439857f1cdc62d781d205a510289841d343a78d8cd0c53aba9796af5e2e0c30638187769d3e6ea2f214006be68ac9a7b SHA512 56e3b232b58e1677ca6afc31ef52f84ed9ad573db7bcdaf98b8cc00bdbd5d2110dddffc7b17b435f1aedd61961073daf0bfa02086c0acc955ec7185fc077cf3b
+DIST thunderbird-128.4.0esr-nn-NO.xpi 726986 BLAKE2B 09954be063fd39bef29aca2f766250b4a13e43aecb5478dc94af63fa366409e4710bf405c54ce8c593827b46ee8bbc4317fa0adb48457e90db2edcf0e3f73749 SHA512 03b7f15e06ce7d8269435e8c4a150df32d49b58525ebd17ecbbb741dcbba2b94645c8838f308fac5e98e87cd6e272c0450d27aebb7b6128b580e590548b3d480
+DIST thunderbird-128.4.0esr-pa-IN.xpi 685675 BLAKE2B 6763f79c0458a2418e236133d919fe0773b4099340085b372fbeae9a23eb00368340ab374d1c9f998c6add300bdb8669746c56dbb52fd1462094edcfcdedb22c SHA512 afb8aa6db1f5d970dd1d827348f8f3730da050332bd85efd2751f8511a5a2279996ed861dd987002cc2afcf2bb531f0bc032496acd65acc7668599d8450a48e8
+DIST thunderbird-128.4.0esr-pl.xpi 767303 BLAKE2B ac20accdbb5f156ccd6cf51147bd8d59e4778efbed0c2851a9a4b7376fe294fdbbe1ca4691e42c4e7edb32902c39417ca83d31f66a1f9674cfa8e62d9611d296 SHA512 e4b4363e5f9bdc0ebfdfd1c86965e62fde83c15fdabf42a28851ab230deb93227b736fe083b9026c65a9cee4af8ad7ecdb21438ae5839f356f5b2b5880821298
+DIST thunderbird-128.4.0esr-pt-BR.xpi 755727 BLAKE2B da1b048024f91f8045bedd0681d62c16d6a0a9cc5a73f70d83f392bf3abb00c210161fc2b340b0f188949aca2384bbee52db9191c02445ab41736ca4f46f9f88 SHA512 29e06f6654ba2e69769915593e79f6a2ddd8afcc75e42bc2202ab4c8c4cbf6ca8e032e70f01cf6d96b09d12bd8b24d9979175560fe34efeecc6ce643cf546a0c
+DIST thunderbird-128.4.0esr-pt-PT.xpi 750495 BLAKE2B 7b4a3e0b542ee0b8d98158caa845791cb56b9f55a74fedd95e1c72450328bfe7a9d6a4d9e4a839082e9ed9e0e17d598b88cdcbd15c1a9f3c364da261828adc6b SHA512 a0b0d6cc5821c19eda972c32ec9568c7c5c9b308ce8ad981e9b575f992ca7e84f878a3828374a25e5aa530c91d5779c11163b966d59a63356c0e8699e52b14b7
+DIST thunderbird-128.4.0esr-rm.xpi 751461 BLAKE2B ac047deb548df260c2fc9c85e339e2391f6003d0ae3d70b52e9b79e38d4fbf837401f325c3fa06a02bf3075f1716e82a1763b513e464522ef0cefceb46cc5a9b SHA512 265f36e631ed90d5f599a9f9c4390901fa932d656582bdeb3e7fb1fff80afe6c6470b36f4d6e31bf4de1d41d066a7381ed0eceddf428fb04e8693e18c88fa645
+DIST thunderbird-128.4.0esr-ro.xpi 669741 BLAKE2B a1cdcc44dcc7c65c560bafdbfb4018e49122f7ddc1ba1f35c7008dc15b5ec67c14becaf3b5a93db60a42a49d19839b69b0155a789f92dc5afe6129e3f6bc0db6 SHA512 8e222f6011dc6903894f9493358cc9889744997f948053df0bdb97c46cedaa9f8be88bf793791d495f3ad9d1f6c815dda0c8f3927d6c3580b38cef693b595fce
+DIST thunderbird-128.4.0esr-ru.xpi 877212 BLAKE2B 9752f8ec9d4bdd5ddf756968793397d043c95aac460bac5223b0d4f9aa83be0e3b531cefcc23425c6f8a63369fcfc834e29b3fbccb05029138d55b6610e32ea4 SHA512 63199ebbd0953908d0e393b8badb5085eb604c31d1cfd8015decb168dd4a68070eabf3e8023ea4d59b5e78bf95332499a0d132b79ddff87ead5b789852f786ef
+DIST thunderbird-128.4.0esr-sk.xpi 788762 BLAKE2B a0eb22c887477f77671c8ada0ebe861e1c6d4a564f4b1a8dd5aa969451b26b6d3daa4fab2054292702f1c86abb450076d38c423f51b20683a8776ad87a212721 SHA512 2deef11dd757bd3273bd6fade4aed4225e018d7e7750bbc244a58f6806e92220e347d677c7852f303b89ea70843858767095e41c9372c67af637d0389e5619b3
+DIST thunderbird-128.4.0esr-sl.xpi 749577 BLAKE2B 33db7d8af5f7debda1c0b421877ee71191c50b53a719e1cb42be35bf34c179608ed434342321bdaf34235022754fe29dda99916cee404f181f470b0537a32ca9 SHA512 600c142220aaf9a737d14470e00b91c87a37e0b2e9f287beeb0331ab9b58cb8f43264424cb731c4efc62b71ddc5021e6d075c0179ccbee70c97c81e236a67413
+DIST thunderbird-128.4.0esr-sq.xpi 771528 BLAKE2B a22851d08142cb29072c02cd1e175e2710d02ef064a4086ebe1bbc5fa6d52f375fea745f8505e138af9900bbed357383a3f9b4f3ff3ca21196dad62b69f2c3b1 SHA512 d8ebe16c4bb67851c7cbd8e4f0bc4ae5e8df57f563fef94f5efa26bc7e9cf97ed6690d555da4639d1ecee143608907ee4e4736bb890d5a0b32062f3172535246
+DIST thunderbird-128.4.0esr-sr.xpi 771226 BLAKE2B 4f7e0f8c6650a62b2339f6c7e25042a8d413176f57fae6247f8cee79976e4da5680b82091a3c346d816314aaca14e3bd1503f238ded0bc5b6ece5f8d92e8232a SHA512 0b3c21632199b12440acb3965637ab753310e7a3ae130e12d1206b25012172e346802fdf5773e1b003539a37f01ff31343aa87e5634b6e890636b3997bc647c1
+DIST thunderbird-128.4.0esr-sv-SE.xpi 751824 BLAKE2B 6df6833b777ac0f31f3ba9a9671c844bc8ca167254e963140c06a6093d1ebb8297460809bd1da78e631724d8ea99777f9f0cde3afc062663b0a02e7a9f32cb24 SHA512 9b4c651c615fbbbe1e6127679a87e9ac0efc4a368b95e70dc839a7340ac2f70f75bcda8a6f55668f1c95fbf875174eddb34ca71133897da717a1de8846042ead
+DIST thunderbird-128.4.0esr-th.xpi 815950 BLAKE2B fcde8174c006121c9e57d64dffee01ef84d00d108cc23d2fa8ce13d145e0cd198b2029c454a38ec8150a41f8587a14307faf3b325d515db2c0cb1d27c90bbbff SHA512 4dba34687d79f7dc934b7b9d71af44acb69f5852b78e2b96d8f2e2a642ab10f52a9cceab3154787eaa670e87846d2cbbfe5401c27d92d85bd33974a131056a9f
+DIST thunderbird-128.4.0esr-tr.xpi 761636 BLAKE2B f3d74bdcaac164b05d8479f7261474346bd28ede95063a52eedb2aff136f988601b335a7e2d7a321d762d10d728ac9df4cb6b0103c5972e9cc5eec02f1e0a030 SHA512 a73ac5068ab7ec1cf2612ae8fbb2acc373f0e5aea0cbb3e3b82c936f38c3816521659ba26fd2c88323a501639b3334c75e7fffe0fa0b24d695ca0277caf5e369
+DIST thunderbird-128.4.0esr-uk.xpi 867539 BLAKE2B 0539518ea9bee8871b94574454b38ee5d7eaafeb2a913aa144a6c336ad4dfc9f901bf72011d4154c5fb7dd9d78b40ed103bf7026c3459ab863ffbb5c6c089d8c SHA512 12be78ad1775e3d3a78a47f66ee28500c1e2d19f73c1ac3908cb3a8f3e5472a39d0dba1b371b9957cd2ba5f990f8902f3a0f02608e2b75e39876339c41a78d8e
+DIST thunderbird-128.4.0esr-uz.xpi 592134 BLAKE2B 28df6e16ddd72f74fc09231a90d4df82db73b696a9e85f396b5fab16b3237527898d893032499e1ec84b8279750bbeb00e5bb72d51c2630d83014b08d0f2c52d SHA512 9df68540bd81d24a364809577ac86b85aaa53c4e43075476e7f05a6bacf0aa16aeabf0cbcc83eb50fc597a7149ee8e4606473adde731ed3d8f38d2e64f4d4fbc
+DIST thunderbird-128.4.0esr-vi.xpi 790930 BLAKE2B 6b45127d272323d59c3f04de6c30804bd5cad3316805668296ef479905d5420d23bfc43a816e81b9dc5689ba21f66e87eb07fa3d5dfa050ef95b1c527cb5894e SHA512 c4a278601901da454638ebd1bee4d4cb2e03a1b21e53b7849003d885e987a750f02ac0e1b2718dc5e4db65aaef37043a673e74e1263f111d671ad76d45afc940
+DIST thunderbird-128.4.0esr-zh-CN.xpi 790746 BLAKE2B b293fb0bf8fa031b45bb48e899248ccc9b84d7fcc7eafc28af9e8dc9e0d3199cf250acbae3190fc67d04b2a35aa0d8e796acdf307e980ba566842a42b91baa5f SHA512 d79d8b66ae50e574b68a4a9fc8f726de2d8e15482a98a8427b8498572d01ca356c46704b06b73282dbf9ac8593395ee93bac41ac69986b8c6140d8b3dc74cfb8
+DIST thunderbird-128.4.0esr-zh-TW.xpi 794101 BLAKE2B f11327c121c0f6572dc9a9731b00531a0e7a344e35bf3a8dc81f1005305225bc3208a9bdbc521f584c0136b5f644309edee79fde3206ceabe041f40cdfcd4614 SHA512 0fef1e5baf436705c1273f915e1beda9593e64d4bde61419159796c9372e9b8c0b879754734e926b5a5a1a4c5060d695348722041700bedeef78684513767e48
+DIST thunderbird-128.4.0esr.source.tar.xz 672888608 BLAKE2B 5a68ae19ca8d63ccb3489cd52d5b35f6409d94d4c9df7d164cb58d70ca720e2bf331506f44ff8611304d4e963e6b13245d04fb614a0c8e1a7180c99d56300c30 SHA512 ad031b3a9b738598358cead23cf8438435016222cd9a474c31892dc1b3db43d2d5d3a10c9639df770dc76eb3c0bc9db8be8beab84828d54ee50fc1e03f0da0a5
diff --git a/mail-client/thunderbird/thunderbird-128.4.0.ebuild b/mail-client/thunderbird/thunderbird-128.4.0.ebuild
new file mode 100644
index 000000000000..b67b80087b97
--- /dev/null
+++ b/mail-client/thunderbird/thunderbird-128.4.0.ebuild
@@ -0,0 +1,1162 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+FIREFOX_PATCHSET="firefox-128esr-patches-04.tar.xz"
+
+LLVM_COMPAT=( 17 18 19 )
+
+PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_REQ_USE="ncurses,sqlite,ssl"
+
+WANT_AUTOCONF="2.1"
+
+VIRTUALX_REQUIRED="manual"
+
+# Thunderbird will have separate release and esr channels, matching Firefox's rapid and esr.
+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="${PN%-bin}"
+MOZ_P="${MOZ_PN}-${MOZ_PV}"
+MOZ_PV_DISTFILES="${MOZ_PV}${MOZ_PV_SUFFIX}"
+MOZ_P_DISTFILES="${MOZ_PN}-${MOZ_PV_DISTFILES}"
+
+inherit autotools check-reqs desktop flag-o-matic gnome2-utils linux-info llvm-r1 multiprocessing \
+	optfeature pax-utils python-any-r1 toolchain-funcs virtualx xdg
+
+MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${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/mozilla/patchsets/${FIREFOX_PATCHSET}
+)
+
+SRC_URI="${MOZ_SRC_BASE_URI}/source/${MOZ_P}.source.tar.xz -> ${MOZ_P_DISTFILES}.source.tar.xz
+	${PATCH_URIS[@]}"
+
+DESCRIPTION="Thunderbird Mail Client"
+HOMEPAGE="https://www.thunderbird.net/"
+
+KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86"
+
+SLOT="0"
+LICENSE="MPL-2.0 GPL-2 LGPL-2.1"
+
+IUSE="clang +dbus debug eme-free hardened hwaccel jack libproxy lto pgo pulseaudio sndio selinux"
+IUSE+=" +system-av1 +system-harfbuzz +system-icu +system-jpeg +system-libevent +system-libvpx"
+IUSE+=" system-png +system-webp wayland wifi +X"
+
+# Thunderbird-only USE flags.
+IUSE+=" +rust-extensions +system-librnp"
+
+REQUIRED_USE="|| ( X wayland )
+	debug? ( !system-av1 )
+	pgo? ( lto )
+	rust-extensions? ( dbus )
+	wayland? ( dbus )
+	wifi? ( dbus )"
+
+TB_ONLY_DEPEND="selinux? ( sec-policy/selinux-thunderbird )
+	!system-librnp? ( dev-libs/jsoncpp )
+	system-librnp? ( >=dev-util/librnp-0.17.1 )"
+BDEPEND="${PYTHON_DEPS}
+	$(llvm_gen_dep '
+		sys-devel/clang:${LLVM_SLOT}
+		sys-devel/llvm:${LLVM_SLOT}
+		clang? (
+			sys-devel/lld:${LLVM_SLOT}
+			virtual/rust:0/llvm-${LLVM_SLOT}
+			pgo? ( sys-libs/compiler-rt-sanitizers:${LLVM_SLOT}[profile] )
+		)
+	')
+	app-alternatives/awk
+	app-arch/unzip
+	app-arch/zip
+	>=dev-util/cbindgen-0.26.0
+	net-libs/nodejs
+	virtual/pkgconfig
+	!clang? ( >=virtual/rust-1.76 )
+	!elibc_glibc? ( dev-lang/rust )
+	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
+				<gui-libs/wlroots-0.17.3[tinywl(-)]
+			)
+			x11-misc/xkeyboard-config
+		)
+	)"
+COMMON_DEPEND="${TB_ONLY_DEPEND}
+	>=app-accessibility/at-spi2-core-2.46.0:2
+	dev-libs/expat
+	dev-libs/glib:2
+	dev-libs/libffi:=
+	>=dev-libs/nss-3.101
+	>=dev-libs/nspr-4.35
+	media-libs/alsa-lib
+	media-libs/fontconfig
+	media-libs/freetype
+	media-libs/mesa
+	media-video/ffmpeg
+	sys-libs/zlib
+	virtual/freedesktop-icon-theme
+	x11-libs/cairo
+	x11-libs/gdk-pixbuf:2
+	x11-libs/pango
+	x11-libs/pixman
+	dbus? ( sys-apps/dbus )
+	jack? ( virtual/jack )
+	pulseaudio? (
+		|| (
+			media-libs/libpulse
+			>=media-sound/apulse-0.1.12-r4[sdk]
+		)
+	)
+	libproxy? ( net-libs/libproxy )
+	selinux? ( sec-policy/selinux-mozilla )
+	sndio? ( >=media-sound/sndio-1.8.0-r1 )
+	system-av1? (
+		>=media-libs/dav1d-1.0.0:=
+		>=media-libs/libaom-1.0.0:=
+	)
+	system-harfbuzz? (
+		>=media-gfx/graphite2-1.3.13
+		>=media-libs/harfbuzz-2.8.1:0=
+	)
+	system-icu? ( >=dev-libs/icu-74.1:= )
+	system-jpeg? ( >=media-libs/libjpeg-turbo-1.2.1:= )
+	system-libevent? ( >=dev-libs/libevent-2.1.12:0=[threads(+)] )
+	system-libvpx? ( >=media-libs/libvpx-1.8.2:0=[postproc] )
+	system-png? ( >=media-libs/libpng-1.6.35:0=[apng] )
+	system-webp? ( >=media-libs/libwebp-1.1.0:0= )
+	wayland? (
+		>=media-libs/libepoxy-1.5.10-r1
+		x11-libs/gtk+:3[wayland]
+	)
+	wifi? (
+		kernel_linux? (
+			|| (
+				net-misc/networkmanager
+				net-misc/connman[networkmanager]
+			)
+			sys-apps/dbus
+		)
+	)
+	X? (
+		virtual/opengl
+		x11-libs/cairo[X]
+		x11-libs/gtk+:3[X]
+		x11-libs/libX11
+		x11-libs/libXcomposite
+		x11-libs/libXdamage
+		x11-libs/libXext
+		x11-libs/libXfixes
+		x11-libs/libXrandr
+		x11-libs/libxcb:=
+	)"
+RDEPEND="${COMMON_DEPEND}
+	jack? ( virtual/jack )"
+DEPEND="${COMMON_DEPEND}
+	X? (
+		x11-base/xorg-proto
+		x11-libs/libICE
+		x11-libs/libSM
+	)"
+
+S="${WORKDIR}/${PN}-${PV%_*}"
+
+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 ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	if use clang && ! tc-ld-is-mold ; then
+		if ! has_version -b "sys-devel/lld:${LLVM_SLOT}" ; then
+			einfo "sys-devel/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+
+		if ! has_version -b "virtual/rust:0/llvm-${LLVM_SLOT}" ; then
+			einfo "virtual/rust:0/llvm-${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+
+		if use pgo ; then
+			if ! has_version -b "=sys-libs/compiler-rt-sanitizers-${LLVM_SLOT}*[profile]" ; then
+				einfo "=sys-libs/compiler-rt-sanitizers-${LLVM_SLOT}*[profile] is missing!" >&2
+				einfo "Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+				return 1
+			fi
+		fi
+	fi
+
+	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
+}
+
+MOZ_LANGS=(
+	af ar ast be bg br ca cak cs cy da de dsb
+	el en-CA en-GB en-US es-AR es-ES es-MX et eu
+	fi fr fy-NL ga-IE gd gl he hr hsb hu
+	id is it ja ka kab kk ko lt lv ms nb-NO nl nn-NO
+	pa-IN pl pt-BR pt-PT rm ro ru
+	sk sl sq sr sv-SE th tr uk uz vi zh-CN zh-TW
+)
+
+mozilla_set_globals() {
+	# https://bugs.gentoo.org/587334
+	local MOZ_TOO_REGIONALIZED_FOR_L10N=(
+		fy-NL ga-IE gu-IN hi-IN hy-AM nb-NO ne-NP nn-NO pa-IN sv-SE
+	)
+
+	local lang xflag
+	for lang in "${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
+
+		SRC_URI+=" l10n_${xflag/[_@]/-}? ("
+		SRC_URI+=" ${MOZ_SRC_BASE_URI}/linux-x86_64/xpi/${lang}.xpi -> ${MOZ_P_DISTFILES}-${lang}.xpi"
+		SRC_URI+=" )"
+		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
+		if use pgo ; then
+			if ! has usersandbox $FEATURES ; then
+				die "You must enable usersandbox as X server can not run as root!"
+			fi
+		fi
+
+		# Ensure we have enough disk space to compile
+		if use pgo || use lto || use debug ; then
+			CHECKREQS_DISK_BUILD="13500M"
+		else
+			CHECKREQS_DISK_BUILD="6600M"
+		fi
+
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_setup() {
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+		if use pgo ; then
+			if ! has userpriv ${FEATURES} ; then
+				eerror "Building ${PN} with USE=pgo and FEATURES=-userpriv is not supported!"
+			fi
+		fi
+
+		# Ensure we have enough disk space to compile
+		if use pgo || use lto || use debug ; then
+			CHECKREQS_DISK_BUILD="13500M"
+		else
+			CHECKREQS_DISK_BUILD="6400M"
+		fi
+
+		check-reqs_pkg_setup
+
+		llvm-r1_pkg_setup
+
+		if use clang && use lto && tc-ld-is-lld ; then
+			local version_lld=$(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
+
+		# 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 "${MOZ_API_KEY_MOZILLA+set}" ]] ; then
+			MOZ_API_KEY_MOZILLA="edb3d487-3a84-46m0ap1e3-9dfd-92b5efaaa005"
+		fi
+
+		# Ensure we use C locale when building, bug #746215
+		export LC_ALL=C
+	fi
+}
+
+src_unpack() {
+	local _lp_dir="${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 ${_src_file}
+		fi
+	done
+}
+
+src_prepare() {
+	if use lto; then
+		rm -v "${WORKDIR}"/firefox-patches/*-LTO-Only-enable-LTO-*.patch || die
+	fi
+
+	# Workaround for bgo#917599
+	if has_version ">=dev-libs/icu-74.1" && use system-icu ; then
+		eapply "${WORKDIR}"/firefox-patches/*-bmo-1862601-system-icu-74.patch
+	fi
+	rm -v "${WORKDIR}"/firefox-patches/*-bmo-1862601-system-icu-74.patch || die
+
+	# Workaround for bgo#915651 on musl
+	if use elibc_glibc ; then
+		rm -v "${WORKDIR}"/firefox-patches/*bgo-748849-RUST_TARGET_override.patch || die
+	fi
+
+	eapply "${WORKDIR}/firefox-patches"
+
+	# Allow user to apply any additional patches without modifing ebuild
+	eapply_user
+
+	# Make cargo respect MAKEOPTS
+	export CARGO_BUILD_JOBS="$(makeopts_jobs)"
+
+	# Workaround for bgo#915651
+	if ! use elibc_glibc ; then
+		if use amd64 ; then
+			export RUST_TARGET="x86_64-unknown-linux-musl"
+		elif use x86 ; then
+			export RUST_TARGET="i686-unknown-linux-musl"
+		else
+			die "Unknown musl chost, please post your rustc -vV along with emerge --info on Gentoo's bug #915651"
+		fi
+	fi
+
+	# Make LTO respect MAKEOPTS
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/build/moz.configure/lto-pgo.configure || die "Failed sedding multiprocessing.cpu_count"
+
+	# Make ICU respect MAKEOPTS
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/intl/icu_sources_data.py || die "Failed sedding multiprocessing.cpu_count"
+
+	# Respect MAKEOPTS all around (maybe some find+sed is better)
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/python/mozbuild/mozbuild/base.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/libwebrtc/build/toolchain/get_cpu_count.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/libwebrtc/build/toolchain/get_concurrent_links.py ||
+			die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/python/gyp/pylib/gyp/input.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/python/mozbuild/mozbuild/code_analysis/mach_commands.py || die "Failed sedding multiprocessing.cpu_count"
+
+	# sed-in toolchain prefix
+	sed -i \
+		-e "s/objdump/${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
+
+	# 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=comm/mail
+	mozconfig_add_options_ac '' --enable-project=comm/mail
+
+	# Set Gentoo defaults
+	mozconfig_add_options_ac 'Gentoo default' \
+		--allow-addon-sideload \
+		--disable-cargo-incremental \
+		--disable-crashreporter \
+		--disable-disk-remnant-avoidance \
+		--disable-geckodriver \
+		--disable-gpsd \
+		--disable-install-strip \
+		--disable-legacy-profile-creation \
+		--disable-parental-controls \
+		--disable-strip \
+		--disable-tests \
+		--disable-updater \
+		--disable-valgrind \
+		--disable-wmf \
+		--enable-js-shell \
+		--enable-negotiateauth \
+		--enable-new-pass-manager \
+		--enable-official-branding \
+		--enable-release \
+		--enable-system-ffi \
+		--enable-system-pixman \
+		--enable-system-policies \
+		--host="${CBUILD:-${CHOST}}" \
+		--libdir="${EPREFIX}/usr/$(get_libdir)" \
+		--prefix="${EPREFIX}/usr" \
+		--target="${CHOST}" \
+		--without-ccache \
+		--without-wasm-sandboxed-libraries \
+		--with-intl-api \
+		--with-libclang-path="$(llvm-config --libdir)" \
+		--with-system-nspr \
+		--with-system-nss \
+		--with-system-zlib \
+		--with-toolchain-prefix="${CHOST}-" \
+		--with-unsigned-addon-scopes=app,system \
+		--x-includes="${ESYSROOT}/usr/include" \
+		--x-libraries="${ESYSROOT}/usr/$(get_libdir)"
+
+	# Set update channel
+	local update_channel=release
+	[[ -n ${MOZ_ESR} ]] && update_channel=esr
+	mozconfig_add_options_ac '' --update-channel=${update_channel}
+
+	if ! use x86 ; 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 ppc64 || use riscv; then
+		mozconfig_add_options_ac '' --disable-sandbox
+	else
+		mozconfig_add_options_ac '' --enable-sandbox
+	fi
+
+	# Enable JIT on riscv64 explicitly
+	# Can be removed once upstream enable it by default in the future.
+	use riscv && mozconfig_add_options_ac 'Enable JIT for RISC-V 64' --enable-jit
+
+	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="${S}/api-mozilla.key"
+	else
+		einfo "Building without Mozilla API key ..."
+	fi
+
+	mozconfig_use_enable rust-extensions thunderbird-rust
+
+	mozconfig_use_with system-av1
+	mozconfig_use_with system-harfbuzz
+	mozconfig_use_with system-harfbuzz system-graphite2
+	mozconfig_use_with system-icu
+	mozconfig_use_with system-jpeg
+	mozconfig_use_with system-libevent
+	mozconfig_use_with system-libvpx
+	mozconfig_use_with system-png
+	mozconfig_use_with system-webp
+
+	if use system-librnp; then
+		mozconfig_add_options_ac "+system-librnp" --enable-compile-environment
+		mozconfig_use_with system-librnp
+	else
+		# This controls the backend of the bundled librnp. Choices are "botan" and "openssl".
+		# RNP Upstream recommends to use botan. In Gentoo it's preferred to use system-librnp.
+		mozconfig_add_options_ac "+bundled librnp backend = botan" --with-librnp-backend="botan"
+	fi
+
+	mozconfig_use_enable dbus
+	mozconfig_use_enable libproxy
+
+	use eme-free && mozconfig_add_options_ac '+eme-free' --disable-eme
+
+	if use hardened ; then
+		mozconfig_add_options_ac "+hardened" --enable-hardening
+		append-ldflags "-Wl,-z,relro -Wl,-z,now"
+
+		# Increase the FORTIFY_SOURCE value, #910071.
+		sed -i -e '/-D_FORTIFY_SOURCE=/s:2:3:' "${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
+
+	# LTO is handled via configure.
+	# -Werror=lto-type-mismatch -Werror=odr are going to fail with GCC,
+	# bmo#1516758, bgo#942288
+	filter-lto
+	filter-flags -Werror=lto-type-mismatch -Werror=odr
+
+	if use lto ; 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
+
+		if use pgo ; then
+			mozconfig_add_options_ac '+pgo' MOZ_PGO=1
+
+			if use clang ; then
+				# Used in build/pgo/profileserver.py
+				export LLVM_PROFDATA="llvm-profdata"
+			fi
+		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
+
+	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 ppc64 || use riscv ; then
+		# '--disable-elf-hack' is not recognized on 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"
+
+	# 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 tc-ld-is-mold && use lto; 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
+
+	${virtx_cmd} ./mach build --verbose || die
+}
+
+src_install() {
+	# xpcshell is getting called during install
+	pax-mark m \
+		"${BUILD_DIR}"/dist/bin/xpcshell \
+		"${BUILD_DIR}"/dist/bin/${PN} \
+		"${BUILD_DIR}"/dist/bin/plugin-container
+
+	DESTDIR="${D}" ./mach install || die
+
+	# 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 sys-devel/llvm package
+	if [[ -f "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" ]] ; then
+		rm -v "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" || die
+	fi
+
+	# 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}/defaults/pref"
+	insinto "${PREFS_DIR}"
+	newins "${FILESDIR}"/gentoo-default-prefs-r1.js gentoo-prefs.js
+
+	local GENTOO_PREFS="${ED}${PREFS_DIR}/gentoo-prefs.js"
+
+	# Force hwaccel prefs if USE=hwaccel is enabled
+	if use hwaccel ; then
+		cat "${FILESDIR}"/gentoo-hwaccel-prefs.js \
+		>>"${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
+	fi
+
+	# 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 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
+
+	# Install language packs
+	local langpacks=( $(find "${WORKDIR}/language_packs" -type f -name '*.xpi') )
+	if [[ -n "${langpacks}" ]] ; then
+		moz_install_xpi "${MOZILLA_FIVE_HOME}/distribution/extensions" "${langpacks[@]}"
+	fi
+
+	# Install icons
+	local icon_srcdir="${S}/comm/mail/branding/thunderbird"
+	local icon_symbolic_file="${icon_srcdir}/TB-symbolic.svg"
+
+	insinto /usr/share/icons/hicolor/symbolic/apps
+	newins "${icon_symbolic_file}" ${PN}-symbolic.svg
+
+	local icon size
+	for icon in "${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="Mozilla ${MOZ_PN^}"
+	local desktop_file="${FILESDIR}/icon/${PN}-r2.desktop"
+	local desktop_filename="${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}/${PN}.desktop-template" || die
+
+	# Install wrapper script
+	[[ -f "${ED}/usr/bin/${PN}" ]] && rm "${ED}/usr/bin/${PN}"
+	newbin "${FILESDIR}/${PN}-r1.sh" ${PN}
+
+	# Update wrapper
+	sed -i \
+		-e "s:@PREFIX@:${EPREFIX}/usr:" \
+		-e "s:@DEFAULT_WAYLAND@:${use_wayland}:" \
+		"${ED}/usr/bin/${PN}" || die
+}
+
+pkg_postinst() {
+	xdg_pkg_postinst
+
+	optfeature_header "Optional programs for extra features:"
+	optfeature "desktop notifications" x11-libs/libnotify
+	optfeature "encrypted chat support" net-libs/libotr
+	optfeature "fallback mouse cursor theme e.g. on WMs" gnome-base/gsettings-desktop-schemas
+}