diff --git a/sys-devel/kgcc64/Manifest b/sys-devel/kgcc64/Manifest
index 4c902158cf6ea..85b846f8c6f39 100644
--- a/sys-devel/kgcc64/Manifest
+++ b/sys-devel/kgcc64/Manifest
@@ -19,3 +19,6 @@ DIST gcc-14-20250419.tar.xz 88251960 BLAKE2B b9d8312ac8dd9dd82128ff872e379f3426b
 DIST gcc-14.1.0-musl-patches-1.tar.xz 3600 BLAKE2B 4cd920b7ca1f122cae806707564d8e45bfd48e78c88788a12a301f6068b5a5f335d8885e67479ac536c66aeaa81f2ecb7240ae56e9fc821a7246ab66b453711f SHA512 61c48d90a55dfc2129d96aee69d939d6a89f6407f69f7bd12c1a619f28989f471fd219d731958f8e62b0fd650c32300f0ad8dc06d5df23d9fc8c1a77fe210c25
 DIST gcc-14.2.0-patches-7.tar.xz 14244 BLAKE2B 11236e91e1fe83fec8ffaa40ec0cdd4b52a00a951e9aa9a7a0a932b234b8f1a9603333a7ccf55859f4ef53dd4d8ad1fd5c1d2514b6e45fce5b86bb58622a0ecc SHA512 5a4d86d943e31fa068b5a784c0132bd83c23243dcb3cf972557a42e004469a415e1b3185f31b1bb36f916594d475f266a2fda031a414e4a15e0bbfe471269eee
 DIST gcc-14.2.0-patches-8.tar.xz 14540 BLAKE2B 09f66035343d4cab694b8ab382170f8e2d546ddffedf3477f26edbd6a798ddf94294f569c2661729d40088d590bc17a4eb651710d8d9f66f33703734a1a82b67 SHA512 7a9a2724ef8db3c57b033d90751192969c16e5eaa8f4777b7f16470222ff3a18771b461bd89feaad701e7f0d573b883b487981588129933c732fb76117728b86
+DIST gcc-15.1.0-musl-patches-1.tar.xz 3036 BLAKE2B f7e8b794feb3c30252dd3e35b990c8a134d337e285a2778ad5575b04667cf01040bf4187252151cd57097cd6d440851843156c9631736f4f065ca8b7ce2f0678 SHA512 4d3f1660d89484f63ad6c238884415673cdfdabb8833cce2fe114193b52f11b3518b034881024527f6553de93936d15ed707d4d2b1e8221908a08ec67810464b
+DIST gcc-15.1.0-patches-1.tar.xz 18628 BLAKE2B ee5fc9d6a06374ccc8d85cd1e269514fde8fed9b1810867a199ac747c09fc166e11e54ba531d42ee2ffbab3ca80277f9ad3c873fbaa3530ff60e5f2bc25c41ba SHA512 72992f0698f632c98abd6d8c7a7a38a109b2f064775a0c5029e44dc29cd88ae061cddd603d47eabced5af5f8571e0b73c9778080873c69dd4dc4766c60339b28
+DIST gcc-15.1.0.tar.xz 98268344 BLAKE2B a902ce99db4e93615879e435bcd0b96d5a16ea0af42598ca0e6d12913b2ce3651a98574c3264b2717b848e6b5a823b403ccca0adde463938d5b41aa3f1da0d34 SHA512 ddd35ca6c653dffa88f7c7ef9ee4cd806e156e0f3b30f4d63e75a8363361285cd566ee73127734cde6a934611de815bee3e32e24bfd2e0ab9f7ff35c929821c1
diff --git a/sys-devel/kgcc64/kgcc64-15.1.0.ebuild b/sys-devel/kgcc64/kgcc64-15.1.0.ebuild
new file mode 100644
index 0000000000000..26d6c54b4754c
--- /dev/null
+++ b/sys-devel/kgcc64/kgcc64-15.1.0.ebuild
@@ -0,0 +1,45 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+case ${CHOST} in
+	hppa*)    CTARGET=hppa64-${CHOST#*-};;
+	mips*)    CTARGET=${CHOST/mips/mips64};;
+	powerpc*) CTARGET=${CHOST/powerpc/powerpc64};;
+	s390*)    CTARGET=${CHOST/s390/s390x};;
+	sparc*)   CTARGET=${CHOST/sparc/sparc64};;
+	i?86*)    CTARGET=x86_64-${CHOST#*-};;
+esac
+export CTARGET
+TOOLCHAIN_ALLOWED_LANGS="c"
+TOOLCHAIN_PATCH_DEV="sam"
+PATCH_VER="1"
+PATCH_GCC_VER="15.1.0"
+MUSL_VER="1"
+MUSL_GCC_VER="15.1.0"
+GCC_TARGET_NO_MULTILIB=true
+inherit toolchain
+
+DESCRIPTION="64bit kernel compiler"
+
+# Works on hppa and mips; all other archs, refer to bug #228115
+KEYWORDS="~hppa"
+
+# unlike every other target, hppa has not unified the 32/64 bit
+# ports in binutils yet
+BDEPEND="hppa? ( sys-devel/binutils-hppa64 )"
+
+pkg_postinst() {
+	toolchain_pkg_postinst
+
+	cd "${ROOT}"/usr/bin
+	local x
+	for x in gcc cpp ; do
+		cat <<-EOF >${CTARGET%%-*}-linux-${x}
+		#!/bin/sh
+		exec ${CTARGET}-${x} "\$@"
+		EOF
+		chmod a+rx ${CTARGET%%-*}-linux-${x}
+	done
+}