+################################################################################
+#
+# clang
+#
+################################################################################
+
+CLANG_VERSION = 5.0.1
+CLANG_SITE = http://llvm.org/releases/$(CLANG_VERSION)
+CLANG_SOURCE = cfe-$(CLANG_VERSION).src.tar.xz
+CLANG_LICENSE = NCSA
+CLANG_LICENSE_FILES = LICENSE.TXT
+CLANG_SUPPORTS_IN_SOURCE_BUILD = NO
+CLANG_INSTALL_STAGING = YES
+
+HOST_CLANG_DEPENDENCIES = host-llvm host-libxml2
+CLANG_DEPENDENCIES = llvm host-clang
+
+# This option is needed, otherwise multiple shared libs
+# (libclangAST.so, libclangBasic.so, libclangFrontend.so, etc.) will
+# be generated. As a final shared lib containing all these components
+# (libclang.so) is also generated, this resulted in the following
+# error when trying to use tools that use libclang:
+# $ CommandLine Error: Option 'track-memory' registered more than once!
+# $ LLVM ERROR: inconsistency in registered CommandLine options
+# By setting BUILD_SHARED_LIBS to OFF, we generate multiple static
+# libraries (the same way as host's clang build) and finally
+# libclang.so to be installed on the target.
+CLANG_CONF_OPTS += -DBUILD_SHARED_LIBS=OFF
+
+# Default is Debug build, which requires considerably more disk space
+# and build time. Release build is selected for host and target
+# because the linker can run out of memory in Debug mode.
+HOST_CLANG_CONF_OPTS += -DCMAKE_BUILD_TYPE=Release
+CLANG_CONF_OPTS += -DCMAKE_BUILD_TYPE=Release
+
+CLANG_CONF_OPTS += -DCMAKE_CROSSCOMPILING=1
+
+# We need to build tools because libclang is a tool
+HOST_CLANG_CONF_OPTS += -DCLANG_BUILD_TOOLS=ON
+CLANG_CONF_OPTS += -DCLANG_BUILD_TOOLS=ON
+
+HOST_CLANG_CONF_OPTS += \
+ -DCLANG_BUILD_EXAMPLES=OFF \
+ -DCLANG_INCLUDE_DOCS=OFF \
+ -DCLANG_INCLUDE_TESTS=OFF
+
+CLANG_CONF_OPTS += \
+ -DCLANG_BUILD_EXAMPLES=OFF \
+ -DCLANG_INCLUDE_DOCS=OFF \
+ -DCLANG_INCLUDE_TESTS=OFF
+
+HOST_CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(HOST_DIR)/bin/llvm-config
+CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(STAGING_DIR)/usr/bin/llvm-config \
+ -DCLANG_TABLEGEN:FILEPATH=$(HOST_DIR)/usr/bin/clang-tblgen \
+ -DLLVM_TABLEGEN_EXE:FILEPATH=$(HOST_DIR)/usr/bin/llvm-tblgen
+
+# Clang can't be used as compiler on the target since there are no
+# development files (headers) and other build tools. So remove clang
+# binaries from target.
+define CLANG_DELETE_BINARIES_FROM_TARGET
+ rm -f $(TARGET_DIR)/usr/bin/clang*
+endef
+CLANG_POST_INSTALL_TARGET_HOOKS += CLANG_DELETE_BINARIES_FROM_TARGET
+
+# clang-tblgen is not installed by default, however it is necessary
+# for cross-compiling clang
+define HOST_CLANG_INSTALL_CLANG_TBLGEN
+ $(INSTALL) -D -m 0755 $(HOST_CLANG_BUILDDIR)/bin/clang-tblgen \
+ $(HOST_DIR)/usr/bin/clang-tblgen
+endef
+HOST_CLANG_POST_INSTALL_HOOKS = HOST_CLANG_INSTALL_CLANG_TBLGEN
+
+$(eval $(cmake-package))
+$(eval $(host-cmake-package))