intel-compute-runtime-25.40.9999 added with patched clang building

dev-libs/intel-compute-runtime/files/00-clang-compat.patch

@@ -0,0 +1,15 @@
+--- a/shared/source/os_interface/os_library.h
++++ b/shared/source/os_interface/os_library.h
+@@ -8,2 +8,3 @@
+ #pragma once
++#include "uchar_string_traits.hpp"
+ #include <string>
+
+--- a/level_zero/core/source/kernel/kernel_shared_state.h
++++ b/level_zero/core/source/kernel/kernel_shared_state.h
+@@ -11,4 +11,1 @@
+-
+-namespace std {
+-class mutex;
+-}
++#include <mutex>

dev-libs/intel-compute-runtime/files/uchar_string_traits.hpp

@@ -0,0 +1,92 @@
+// uchar_string_traits.hpp
+#pragma once
+#include <cstddef>
+#include <cstring>
+#include <string>
+#include <ostream>
+#include <type_traits>
+
+static_assert(sizeof(unsigned char) == 1, "Assumes 8-bit unsigned char");
+
+namespace std {
+
+// Пользовательская специализация char_traits для unsigned char.
+// Разрешено стандартом, т.к. char_traits предназначен для специализации.
+template<>
+struct char_traits<unsigned char> {
+    using char_type   = unsigned char;
+    using int_type    = int;             // согласовано с базовой специализацией
+    using off_type    = std::streamoff;
+    using pos_type    = std::streampos;
+    using state_type  = std::mbstate_t;
+
+    static void assign(char_type& r, const char_type& a) noexcept { r = a; }
+    static constexpr bool eq(char_type a, char_type b) noexcept    { return a == b; }
+    static constexpr bool lt(char_type a, char_type b) noexcept    { return a <  b; }
+
+    static int compare(const char_type* s1, const char_type* s2, size_t n) noexcept {
+        for (size_t i = 0; i < n; ++i) {
+            if (lt(s1[i], s2[i])) return -1;
+            if (lt(s2[i], s1[i])) return  1;
+        }
+        return 0;
+    }
+
+    static size_t length(const char_type* s) noexcept {
+        // Ищем нуль-терминатор (0), как в C-строках
+        size_t i = 0;
+        while (s[i] != 0) ++i;
+        return i;
+    }
+
+    static const char_type* find(const char_type* s, size_t n, const char_type& a) noexcept {
+        for (size_t i = 0; i < n; ++i)
+            if (eq(s[i], a)) return s + i;
+        return nullptr;
+    }
+
+    static char_type* move(char_type* s1, const char_type* s2, size_t n) noexcept {
+        if (s1 == s2 || n == 0) return s1;
+        // корректно обрабатываем перекрытие
+        std::memmove(s1, s2, n);
+        return s1;
+    }
+
+    static char_type* copy(char_type* s1, const char_type* s2, size_t n) noexcept {
+        if (n) std::memcpy(s1, s2, n);
+        return s1;
+    }
+
+    static char_type* assign(char_type* s, size_t n, char_type a) noexcept {
+        if (n) std::memset(s, a, n);
+        return s;
+    }
+
+    static constexpr int_type to_int_type(char_type c) noexcept {
+        return static_cast<unsigned int>(c);
+    }
+
+    static constexpr char_type to_char_type(int_type c) noexcept {
+        return static_cast<char_type>(static_cast<unsigned int>(c) & 0xFFu);
+    }
+
+    static constexpr bool eq_int_type(int_type c1, int_type c2) noexcept {
+        return c1 == c2;
+    }
+
+    static constexpr int_type eof() noexcept {
+        return -1;
+    }
+
+    static constexpr int_type not_eof(int_type c) noexcept {
+        return (c == eof()) ? 0 : c;
+    }
+};
+
+} // namespace std
+
+// Удобный вывод: печатаем как байты/символы ASCII (без гарантий по локали)
+inline std::ostream& operator<<(std::ostream& os, const std::basic_string<unsigned char>& s) {
+    for (unsigned char ch : s) os.put(static_cast<char>(ch));
+    return os;
+}

dev-libs/intel-compute-runtime/intel-compute-runtime-25.40.9999.ebuild

@@ -0,0 +1,100 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+CMAKE_BUILD_TYPE="Release"
+MY_PN="${PN/intel-/}"
+MY_P="${MY_PN}-${PV}"
+
+inherit cmake flag-o-matic git-r3
+
+DESCRIPTION="Intel Graphics Compute Runtime for oneAPI Level Zero and OpenCL Driver"
+HOMEPAGE="https://github.com/intel/compute-runtime"
+
+#SRC_URI="https://github.com/intel/${MY_PN}/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+EGIT_REPO_URI="https://github.com/intel/${MY_PN}.git"
+EGIT_OVERRIDE_BRANCH_INTEL_COMPUTE_RUNTIME="releases/25.40"
+EGIT_SUBMODULES=()
+
+S="${WORKDIR}/${PN}-${PV}"
+
+LICENSE="MIT"
+SLOT="0/1.6"
+KEYWORDS="~amd64"
+IUSE="disable-mitigations +l0 +vaapi test"
+
+RDEPEND="
+	!dev-libs/intel-compute-runtime:legacy
+	>=dev-util/intel-graphics-compiler-2.19.1:0
+	!dev-util/intel-graphics-compiler:legacy
+	>=media-libs/gmmlib-22.7.1:=
+
+	dev-libs/intel-metrics-discovery:=
+	>=dev-libs/intel-metrics-library-1.0.200:=
+	dev-libs/libnl:3
+	dev-libs/libxml2:2
+	>=dev-util/intel-graphics-system-controller-0.9.6:=
+	media-libs/mesa
+	>=virtual/opencl-3
+	l0? ( >=dev-libs/level-zero-1.24.2:= )
+	vaapi? (
+		x11-libs/libdrm[video_cards_intel]
+		media-libs/libva
+	)
+	test? ( ${CATEGORY}/${PN}:${SLOT} )
+"
+
+BDEPEND="virtual/pkgconfig"
+
+DOCS=( "README.md" "FAQ.md" )
+
+#PATCHES=(
+#	"${FILESDIR}/${PN}-test.patch"
+#)
+
+src_prepare() {
+	# Remove '-Werror' from default
+	sed -e '/Werror/d' -i CMakeLists.txt || die
+
+	# uchar
+	[[ ${CC} == *clang* ]] && \
+	cp "${FILESDIR}/uchar_string_traits.hpp" "${S}/shared/source/os_interface/" && \
+	eapply "${FILESDIR}/00-clang-compat.patch"
+
+	cmake_src_prepare
+}
+
+src_configure() {
+	# Filtered for two reasons:
+	# 1) https://github.com/intel/compute-runtime/issues/528
+	# 2) bug #930199
+	filter-lto
+
+	local mycmakeargs=(
+		-DCCACHE_ALLOWED="OFF"
+		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr"
+		-DCMAKE_INSTALL_LIBDIR="$(get_libdir)"
+		-DBUILD_WITH_L0="$(usex l0)"
+		-DDISABLE_LIBVA="$(usex !vaapi)"
+		-DNEO_ALLOW_LEGACY_PLATFORMS_SUPPORT="ON"
+		-DNEO_DISABLE_LTO="ON"
+		-DNEO_DISABLE_MITIGATIONS="$(usex disable-mitigations)"
+		-DNEO_ENABLE_REFERENCE_TRACKING="OFF"
+		-DNEO__METRICS_LIBRARY_INCLUDE_DIR="${ESYSROOT}/usr/include"
+		-DKHRONOS_GL_HEADERS_DIR="${ESYSROOT}/usr/include"
+		-DOCL_ICD_VENDORDIR="${EPREFIX}/etc/OpenCL/vendors"
+		-DSUPPORT_DG1="ON"
+		-Wno-dev
+
+		# See https://github.com/intel/intel-graphics-compiler/issues/204
+		# -DNEO_DISABLE_BUILTINS_COMPILATION="ON"
+
+		# If enabled, tests are automatically run during
+		# the compile phase and we cannot run them because
+		# they require permissions to access the hardware.
+		-DSKIP_UNIT_TESTS="$(usex !test)"
+	)
+
+	cmake_src_configure
+}