sys-devel/gcc-config: Sync with Gentoo

It's from Gentoo commit 9775198062ffa5b0b683f63fbda6831d913db68c.

Signed-off-by: Flatcar Buildbot <buildbot@flatcar-linux.org>

sdk_container/src/third_party/portage-stable/sys-devel/gcc-config/Manifest

@@ -1 +1,2 @@
 DIST gcc-config-2.12.1.tar.xz 18328 BLAKE2B 349c4614ea349d03f445cdda5d87ccb5e54b4faa802c8997f3bc088a78bf4ff92ec75c91d986ff3e26ab7f098e3af70dd9f85efda77ed64315d2e59b4b11a925 SHA512 abd7fe4ee79269b1003ffe2fb24884751e94e7777814ac123e51db0c059d105b312aed08726fbda2342504738f7055ca803f0ddd006e57110f49d7f3db574183
+DIST gcc-config-2.12.2.tar.xz 18320 BLAKE2B c3ed9a56f130c7787db44bc756c22e81007ec699a079e4e20cfb1f340967be34454f23b0377a59ee4ab3e10a3e87d173a1898d9ce24136bec0f20ed7900b4ec4 SHA512 266ea91e1613f5c969628d49ff513b554b9219f0ff12af86c10cbc857deac140e13daf0296109c7740292f10e7e26f0a5e492dd22bec4e952ee8a5f115a22041

sdk_container/src/third_party/portage-stable/sys-devel/gcc-config/gcc-config-2.12.2.ebuild

@@ -0,0 +1,60 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+if [[ ${PV} == 9999 ]]; then
+	EGIT_REPO_URI="https://anongit.gentoo.org/git/proj/gcc-config.git"
+	inherit git-r3
+else
+	SRC_URI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}.tar.xz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+fi
+
+DESCRIPTION="Utility to manage compilers"
+HOMEPAGE="https://gitweb.gentoo.org/proj/gcc-config.git/"
+
+LICENSE="GPL-2 GPL-2+"
+SLOT="0"
+IUSE="+cc-wrappers +native-symlinks"
+
+RDEPEND=">=sys-apps/gentoo-functions-0.10"
+
+_emake() {
+	emake \
+		PV="${PVR}" \
+		SUBLIBDIR="$(get_libdir)" \
+		USE_CC_WRAPPERS="$(usex cc-wrappers)" \
+		USE_NATIVE_LINKS="$(usex native-symlinks)" \
+		TOOLCHAIN_PREFIX="${CHOST}-" \
+		"$@"
+}
+
+src_compile() {
+	_emake
+}
+
+src_install() {
+	_emake DESTDIR="${D}" install
+}
+
+pkg_postinst() {
+	# Do we have a valid multi ver setup ?
+	local x
+	for x in $(gcc-config -C -l 2>/dev/null | awk '$NF == "*" { print $2 }') ; do
+		gcc-config ${x}
+	done
+
+	# USE flag change can add or delete files in /usr/bin worth recaching
+	if [[ ! ${ROOT} && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+		eselect compiler-shadow update all
+	fi
+
+	if ! has_version "sys-devel/gcc[gcj(-)]" && [[ -x "${EROOT}"/usr/bin/gcj ]] ; then
+		# Warn about obsolete /usr/bin/gcj for bug #804178
+		ewarn "Obsolete GCJ wrapper found: ${EROOT}/usr/bin/gcj!"
+		ewarn "Please delete this file unless you know it is needed (e.g. custom gcj install)."
+		ewarn "If you have no idea what this means, please delete the file:"
+		ewarn " rm ${EROOT}/usr/bin/gcj"
+	fi
+}