sys-devel/gcc: add 16.0.0_p20251228

Signed-off-by: Sam James <sam@gentoo.org>

sys-devel/gcc/Manifest

@@ -46,6 +46,7 @@ DIST gcc-16-20251130.tar.xz 97478692 BLAKE2B 5e03e213aec7c74e34648d2210b77bb20cb
 DIST gcc-16-20251207.tar.xz 97572092 BLAKE2B 373c76b915ade3be8b78a16d5d77b549ea52ca60265df5db563792582fe3c68c540a45b70af5b5bfe3e37f34f5b291524c3974275b33b8f8ade3008f93063a6f SHA512 88201f8e680e877417d61d76fefa8f4228809201f1981b2e78eb185933e0d0ea8a74e2b2719783c9f49df1584c8bfac07e469b7c72473d296719b2dcada34ec2
 DIST gcc-16-20251214.tar.xz 97640212 BLAKE2B dbada367a57b73f089f07952ab813580024b81806ceec2895656d592afd7fed258d7ef33a16baab5731138becf466a19d3b6ab5ff0b28d99b912abbb61ccf79b SHA512 4d2d5a97f3193d8092afec4937ca2c03de706eb60c2a7e7eaef5260eba2f3f524787741c1b1a94ca919e571b4144d4e88affff5864539a251bad3f3f214d86a7
 DIST gcc-16-20251221.tar.xz 97719712 BLAKE2B 823a0950b089501e1bd9d89910320a685790aa5623498d860dbc367c18eade21dbe887671a911d976e6a3860025eedccc870e5ba370f3967456b0a9cba535b2b SHA512 5f3f88bddfc8cef6d368fcbd2b2a858c76b38ebd20ad15e0040925d56c0f8118232a3cc44744818f27f7ffbb1536c2cdd47bed7ba1639c5776508740a2bd3241
+DIST gcc-16-20251228.tar.xz 97763020 BLAKE2B ef6d042247b40dd77e28c3b96d8a3df21e92af32eb00327e54c4410099de7a6d7318970f9b8bdbea7aa505c4b82b284bf30e8534015d302cecd393bd300055e8 SHA512 f8107296db1bdc2d59655cca0641236b7cc9eab710a4e6801b6d66777f81c035219b9ee2504c91a7724cf5948dfb3a347778c0b04d8f842c9b4d0a129c940dab
 DIST gcc-16.0.0-musl-patches-1.tar.xz 3040 BLAKE2B 18b16357699780eb470cf44a10710281955140103198e0bd55b75e1efe3dbec233689edb11e1b9a62f782f3d97293af4906c18c2c41613b422eda085ee819467 SHA512 5ba580c7c7bb9e62935a5162d44d357cc31185a113acff7498ed7b1ac43fd0a35de7c3de0c87f02fe0be46b5e55b49bb35d1f5cd470058d21a9ea4096a37e13d
 DIST gcc-16.0.0-patches-24.tar.xz 20584 BLAKE2B e94a74b867317f5f5a126231783b5c15be729ec3f20863d46ed97f2eace67718d3a3a7f1cf6d040453057e764af4e4a2aeaeae7f6a09a5d966dd9df22716db4b SHA512 750fbade44cafddd7d54a942413193732649486fc83055a90049b461cbae96f6924fa38e1489c2dbf49d082f59fc6932658a563ee5a167fe1bba9f6bb7f23bed
 DIST gcc-16.0.0-patches-25.tar.xz 17940 BLAKE2B 140856458acac807c2a78d97e0f10cc4d0012ad913a1d61411dd9f01ccc6e355fce219a1a0de1cae2cb4fc57b84fdc429ea65932964230b0f4852d6e61a62ee6 SHA512 2272aed3ab6d06c9f611adb01f5bbcd8c7eb4531aee41d456a3224a3b0b388f7bd9c541e4d5d8850e48450ae871074195d03ed83dc30292f2db5be9b4a7cdfb7

sys-devel/gcc/gcc-16.0.0_p20251228.ebuild

@@ -0,0 +1,56 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Maintenance notes and explanations of GCC handling are on the wiki:
+# https://wiki.gentoo.org/wiki/Project:Toolchain/sys-devel/gcc
+
+TOOLCHAIN_PATCH_DEV="sam"
+TOOLCHAIN_HAS_TESTS=1
+PATCH_GCC_VER="16.0.0"
+PATCH_VER="28"
+MUSL_VER="1"
+MUSL_GCC_VER="16.0.0"
+PYTHON_COMPAT=( python3_{11..14} )
+
+if [[ -n ${TOOLCHAIN_GCC_RC} ]] ; then
+	# Cheesy hack for RCs
+	MY_PV=$(ver_cut 1).$((($(ver_cut 2) + 1))).$((($(ver_cut 3) - 1)))-RC-$(ver_cut 5)
+	MY_P=${PN}-${MY_PV}
+	GCC_TARBALL_SRC_URI="mirror://gcc/snapshots/${MY_PV}/${MY_P}.tar.xz"
+	TOOLCHAIN_SET_S=no
+	S="${WORKDIR}"/${MY_P}
+fi
+
+inherit toolchain
+
+if tc_is_live ; then
+	# Needs to be after inherit (for now?), bug #830908
+	EGIT_BRANCH=master
+elif [[ -z ${TOOLCHAIN_USE_GIT_PATCHES} ]] ; then
+	# Don't keyword live ebuilds
+	#KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+	:;
+fi
+
+if [[ ${CATEGORY} != cross-* ]] ; then
+	# Technically only if USE=hardened *too* right now, but no point in complicating it further.
+	# If GCC is enabling CET by default, we need glibc to be built with support for it.
+	# bug #830454
+	RDEPEND="elibc_glibc? ( sys-libs/glibc[cet(-)?] )"
+	DEPEND="${RDEPEND}"
+fi
+
+src_prepare() {
+	local p upstreamed_patches=(
+		# add them here
+	)
+	for p in "${upstreamed_patches[@]}"; do
+		rm -v "${WORKDIR}/patch/${p}" || die
+	done
+
+	toolchain_src_prepare
+	eapply "${FILESDIR}"/${PN}-13-fix-cross-fixincludes.patch
+	eapply_user
+}