sys-devel/gcc: add 16.0.0_p20251116

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

sys-devel/gcc/Manifest

@@ -29,8 +29,10 @@ DIST gcc-15.2.0-musl-patches-1.tar.xz 7168 BLAKE2B 6b7cfb123c3a691693240db815e68
 DIST gcc-15.2.0-patches-2.tar.xz 18708 BLAKE2B 09c54bd1b8436e12a3da1c3ee41017cd3e960268a5d4637252152b44a4cc93934d4dc93eff842d7dcee4d1688b7f2d98be48114ef5c864793242177f7549c933 SHA512 f11cfafe00f7d18e05a316bd1dc522477cc4118fdd65019cf85bca674ff0180951506fef84ce0b5b13190ccfe44c777a64afdc602a4580595005b43b79ae7411
 DIST gcc-15.2.0-patches-3.tar.xz 17436 BLAKE2B ae72e3c5feb7b96c10eb0706efe95047f0516a66ec19488ad7281dd4c62d4c6f1d1d594c6a865c808293b30b4f57ee8bc018b90fcf5944ccb935bc391752aa74 SHA512 4d23fd0dacc33c069528ef0bd6ece3029a4b221e55c82347c2df8a6fa8b890c6e7eeaf15284204a4a29841678b033af2272481bde6fca8ebcc08f8c233f4e7e3
 DIST gcc-16-20251109.tar.xz 97043964 BLAKE2B 34313b7f335e58ddf76f28b8a19f4c1f70f860b6305ceb55f012220933a08caf41fbb986707cbbf37481202ff2a2fc2ea21922bb787b1ded6febd0348ae0b873 SHA512 157e565f3753f48ba34f380c5927a21645daf0bb31f2521dc9bb577fbbc871c2cd6e20504a0ed3f595f9ca95ab57917561caba1ea110e07568aa030f8c8b33ec
+DIST gcc-16-20251116.tar.xz 97131276 BLAKE2B 9a2f786ba50fbe3e401f736325dbec3d32deb51cdf75f23430f2d8e077f9eb5fa78fcdb8828239b852dca1a2362e9ec4d289d0b81f1a08ea1b8f82336d577a46 SHA512 47c8302546fc92f9a11f943859d0805089e871821e64de5613af5bbcc7a64ae7cbe7dda167e7ec25b6e033eb02b207fc2209deb8294e4ed4a192703ba2ec5f18
 DIST gcc-16.0.0-musl-patches-1.tar.xz 3040 BLAKE2B 18b16357699780eb470cf44a10710281955140103198e0bd55b75e1efe3dbec233689edb11e1b9a62f782f3d97293af4906c18c2c41613b422eda085ee819467 SHA512 5ba580c7c7bb9e62935a5162d44d357cc31185a113acff7498ed7b1ac43fd0a35de7c3de0c87f02fe0be46b5e55b49bb35d1f5cd470058d21a9ea4096a37e13d
 DIST gcc-16.0.0-patches-22.tar.xz 20656 BLAKE2B aecd57181a92381aa959211ed3ceb1475ae114c481fa8f77af916b68475de46336db789defedfc4a0d7c3d8d749e78b94e07270c094aa6663b35f24482d0dec3 SHA512 f0a3693059c9bab8c8d742bcde9ca7406612364112cc7d2626bb201cfe3824931c17dbacd607af1681a9d39ef44f0f0c197252f4c6de915590291b08dacc3357
+DIST gcc-16.0.0-patches-23.tar.xz 19484 BLAKE2B c6925b71b7a079866e15271d8ee9fc1294bdbd44e30b873b67ed7fb40a3f163fa5d49d8781bb0009598ad64c94a77f37a313cb316977f4e6f2bbad8d4b8b8c23 SHA512 c64add9f61f6f6bf25892be225523f84b13afaedda3895aa48ee1da7ec320182925657b349608a2914be60168dc4fa6d24b33be1856195a7dac08b9d007024e4
 DIST gcc-8.5.0-patches-5.tar.xz 20188 BLAKE2B 45b29161105edc6344bb48f5bdf17e1aad6e8d9edb4d9434816425996c1b12c10f1303963776adad9db866d845f864d80d198a30e35ee6c204ca3659cf7a1401 SHA512 f22ab5d8e3116e2e896a5dcbbf5cef67dc5090182af364ef64fc22d2b28c029da5ed39f126f446721e388e7b6848239d01f5fc0346e49b96d5c04068b557f8f8
 DIST gcc-8.5.0.tar.xz 63841008 BLAKE2B aa81a1a730fd7371360f6abed6ba78b5843fd18c58d5de5687acc320741b9e430e85df3535a1ef7a26051409be8d2f0945f503e5968480d919103123a99d4b12 SHA512 92f599680e6b7fbce88bcdda810f468777d541e5fddfbb287f7977d51093de2a5178bd0e6a08dfe37090ea10a0508a43ccd00220041abbbec33f1179bfc174d8
 DIST gcc-9.5.0-patches-3.tar.xz 17888 BLAKE2B f2be05f32f4ecca41ebf4f402bf8fb3c11a36a8b7bd912ee9fe6baea980929774b629e12df7afb3405f1f5d044766a437b3eca5433f4af6c757f4a9dbb2e77eb SHA512 d31bb1964cdb2376572e4981b22c7ffa6fa695259c27af5d0d12aebc334cd1122c2f75739033f25f1e672300adeab2b3772622cb16099d002f3f8c5a8fe694f9

sys-devel/gcc/gcc-16.0.0_p20251116.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="23"
+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
+}