initial buildroot for linux 5.15

package/libclc/Config.in

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+config BR2_PACKAGE_LIBCLC
+	bool "libclc"
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	help
+	  libclc is an open source, BSD licensed implementation of
+	  the library requirements of the OpenCL C programming language,
+	  as specified by the OpenCL 1.1 Specification.
+
+	  http://libclc.llvm.org/

package/libclc/libclc.hash

@@ -0,0 +1,3 @@
+# locally calculated
+sha256  54d7ae523aabf68d533011739d6c01546cae0c294442d0f44fd657c046cb707d  libclc-d1cbc92e2ceee59963f5c3a576382e5bba31f060-br1.tar.gz
+sha256  3c536c052db9afd997809e38785c9f2a9e54e2892330fa7c5b438e18a7413479  LICENSE.TXT

package/libclc/libclc.mk

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+################################################################################
+#
+# libclc
+#
+################################################################################
+
+# Use the latest commit from release_90 branch.
+LIBCLC_VERSION = d1cbc92e2ceee59963f5c3a576382e5bba31f060
+LIBCLC_SITE = https://github.com/llvm-mirror/libclc
+LIBCLC_SITE_METHOD = git
+LIBCLC_LICENSE = Apache-2.0 with exceptions or MIT
+LIBCLC_LICENSE_FILES = LICENSE.TXT
+
+LIBCLC_DEPENDENCIES = host-clang host-llvm
+LIBCLC_INSTALL_STAGING = YES
+
+# C++ compiler is used to build a small tool (prepare-builtins) for the host.
+# It must be built with the C++ compiler from the host.
+#
+# The headers are installed in /usr/share and not /usr/include,
+# because they are needed at runtime on the target to build the OpenCL
+# kernels.
+LIBCLC_CONF_OPTS = \
+	--with-llvm-config=$(HOST_DIR)/usr/bin/llvm-config \
+	--prefix=/usr \
+	--includedir=/usr/share \
+	--pkgconfigdir=/usr/lib/pkgconfig \
+	--with-cxx-compiler=$(HOSTCXX_NOCCACHE)
+
+define LIBCLC_CONFIGURE_CMDS
+	(cd $(@D); $(TARGET_CONFIGURE_OPTS) ./configure.py $(LIBCLC_CONF_OPTS))
+endef
+
+define LIBCLC_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
+endef
+
+define LIBCLC_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) DESTDIR=$(TARGET_DIR) install
+endef
+
+define LIBCLC_INSTALL_STAGING_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) DESTDIR=$(STAGING_DIR) install
+endef
+
+$(eval $(generic-package))