sys-devel/llvm/llvm-6.0_pre317203_p20180123-r2.ebuild - mirrors/cros/chromiumos/overlays/chromiumos-overlay - Git at Google

 # Copyright 1999-2015 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$

 EAPI=5

 : ${CMAKE_MAKEFILE_GENERATOR:=ninja}
 PYTHON_COMPAT=( python2_7 )

 inherit  cros-constants check-reqs cmake-utils eutils flag-o-matic git-2 git-r3 \
 	multilib multilib-minimal python-single-r1 toolchain-funcs pax-utils

 DESCRIPTION="Low Level Virtual Machine"
 HOMEPAGE="http://llvm.org/"
 SRC_URI=""
 EGIT_REPO_URI="http://llvm.org/git/llvm.git
 	https://github.com/llvm-mirror/llvm.git"
 LICENSE="UoI-NCSA"

 # For this version of the ebuild, llvm and llvm-next are the same. We need to roll
 # a new llvm-next.
 if use llvm-next; then

 # llvm:r321490 https://critique.corp.google.com/#review/181250307
 EGIT_REPO_URIS=(
 	"llvm"
 		""
 		"${CROS_GIT_HOST_URL}/chromiumos/third_party/llvm.git"
 		"7e6fcc775f56cdeeae061f6f8071f5c103087330" # EGIT_COMMIT r321490
 	"compiler-rt"
 		"projects/compiler-rt"
 		"${CROS_GIT_HOST_URL}/chromiumos/third_party/compiler-rt.git"
 		"3bd6c8e44cf530bbf8c0e57b571f4bfc7d48b698" # EGIT_COMMIT r321485
 	"clang"
 		"tools/clang"
 		"${CROS_GIT_HOST_URL}/chromiumos/third_party/clang.git"
 		"7e0bf617fb110ad1e246f7cb09e20e293d3b429e"  # EGIT_COMMIT r321487
 	"clang-tidy"
 		"tools/clang/tools/extra"
 		"https://git.llvm.org/git/clang-tools-extra.git"
 		"057470116210d2e6bf5e726361e641c8c5de9b35" # EGIT_COMMIT r321412
 )
 else
 # llvm:r317203 https://critique.corp.google.com/#review/175206381
 EGIT_REPO_URIS=(
 	"llvm"
 		""
 		"${CROS_GIT_HOST_URL}/chromiumos/third_party/llvm.git"
 		"66af8bde13a515b8d0fa76201f0d5b428187fd13" # EGIT_COMMIT r317203
 	"compiler-rt"
 		"projects/compiler-rt"
 		"${CROS_GIT_HOST_URL}/chromiumos/third_party/compiler-rt.git"
 		"bcc227ee4af1ef3e63033b35dcb1d5627a3b2941" # EGIT_COMMIT r317186
 	"clang"
 		"tools/clang"
 		"${CROS_GIT_HOST_URL}/chromiumos/third_party/clang.git"
 		"4d085086c74a8fbce197f61548f488a63f300933"  # EGIT_COMMIT r317200
 	"clang-tidy"
 		"tools/clang/tools/extra"
 		"https://git.llvm.org/git/clang-tools-extra.git"
 		"47651f3221d4ae4d2fcc274f7730e1ac853d86b8" # EGIT_COMMIT r316094
 )
 fi

 LICENSE="UoI-NCSA"
 SLOT="0/${PV%%_*}"
 KEYWORDS="-* amd64"
 IUSE="clang debug +default-compiler-rt +default-libcxx doc gold libedit +libffi
 	lldb multitarget ncurses ocaml python +static-analyzer llvm-next llvm-tot
 	test xml video_cards_radeon kernel_Darwin"

 COMMON_DEPEND="
 	sys-libs/zlib:0=
 	clang? (
 		static-analyzer? ( dev-lang/perl:* )
 		xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
 		${PYTHON_DEPS}
 	)
 	gold? ( >=sys-devel/binutils-2.22:*[cxx] )
 	libedit? ( dev-libs/libedit:0=[${MULTILIB_USEDEP}] )
 	libffi? ( >=virtual/libffi-3.0.13-r1:0=[${MULTILIB_USEDEP}] )
 	ncurses? ( >=sys-libs/ncurses-5.9-r3:5=[${MULTILIB_USEDEP}] )
 	ocaml? (
 		>=dev-lang/ocaml-4.00.0:0=
 		dev-ml/findlib
 		dev-ml/ocaml-ctypes )"
 # configparser-3.2 breaks the build (3.3 or none at all are fine)
 DEPEND="${COMMON_DEPEND}
 	dev-lang/perl
 	>=sys-devel/make-3.81
 	>=sys-devel/flex-2.5.4
 	>=sys-devel/bison-1.875d
 	|| ( >=sys-devel/gcc-3.0 >=sys-devel/llvm-3.5
 		( >=sys-freebsd/freebsd-lib-9.1-r10 sys-libs/libcxx )
 	)
 	|| ( >=sys-devel/binutils-2.18 >=sys-devel/binutils-apple-5.1 )
 	kernel_Darwin? ( sys-libs/libcxx )
 	clang? ( xml? ( virtual/pkgconfig ) )
 	doc? ( dev-python/sphinx )
 	gold? ( sys-libs/binutils-libs )
 	libffi? ( virtual/pkgconfig )
 	lldb? ( dev-lang/swig )
 	!!<dev-python/configparser-3.3.0.2
 	ocaml? ( test? ( dev-ml/ounit ) )
 	${PYTHON_DEPS}"
 RDEPEND="${COMMON_DEPEND}
 	clang? ( !<=sys-devel/clang-${PV}-r99 )
 	abi_x86_32? ( !<=app-emulation/emul-linux-x86-baselibs-20130224-r2
 		!app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)] )"
 PDEPEND="clang? ( =sys-devel/clang-${PV}-r100 )"

 # pypy gives me around 1700 unresolved tests due to open file limit
 # being exceeded. probably GC does not close them fast enough.
 REQUIRED_USE="${PYTHON_REQUIRED_USE}
 	lldb? ( clang xml )"

 pkg_pretend() {
 	# in megs
 	# !clang !debug !multitarget -O2       400
 	# !clang !debug  multitarget -O2       550
 	#  clang !debug !multitarget -O2       950
 	#  clang !debug  multitarget -O2      1200
 	# !clang  debug  multitarget -O2      5G
 	#  clang !debug  multitarget -O0 -g  12G
 	#  clang  debug  multitarget -O2     16G
 	#  clang  debug  multitarget -O0 -g  14G

 	local build_size=550
 	use clang && build_size=1200

 	if use debug; then
 		ewarn "USE=debug is known to increase the size of package considerably"
 		ewarn "and cause the tests to fail."
 		ewarn

 		(( build_size *= 14 ))
 	elif is-flagq '-g?(gdb)?([1-9])'; then
 		ewarn "The C++ compiler -g option is known to increase the size of the package"
 		ewarn "considerably. If you run out of space, please consider removing it."
 		ewarn

 		(( build_size *= 10 ))
 	fi

 	# Multiply by number of ABIs :).
 	local abis=( $(multilib_get_enabled_abis) )
 	(( build_size *= ${#abis[@]} ))

 	local CHECKREQS_DISK_BUILD=${build_size}M
 	check-reqs_pkg_pretend

 	if [[ ${MERGE_TYPE} != binary ]]; then
 		echo 'int main() {return 0;}' > "${T}"/test.cxx || die
 		ebegin "Trying to build a C++11 test program"
 		if ! $(tc-getCXX) -std=c++11 -o /dev/null "${T}"/test.cxx; then
 			eerror "LLVM-${PV} requires C++11-capable C++ compiler. Your current compiler"
 			eerror "does not seem to support -std=c++11 option. Please upgrade your compiler"
 			eerror "to gcc-4.7 or an equivalent version supporting C++11."
 			die "Currently active compiler does not support -std=c++11"
 		fi
 		eend ${?}
 	fi
 }

 pkg_setup() {
 	pkg_pretend
 }

 trunk_src_unpack() {
 	git-r3_fetch "http://llvm.org/git/compiler-rt.git
 		https://github.com/llvm-mirror/compiler-rt.git"
 	git-r3_fetch "http://llvm.org/git/clang.git
 		https://github.com/llvm-mirror/clang.git"
 	git-r3_fetch "http://llvm.org/git/clang-tools-extra.git
 		https://github.com/llvm-mirror/clang-tools-extra.git"
 	git-r3_fetch

 	git-r3_checkout http://llvm.org/git/compiler-rt.git \
 		"${S}"/projects/compiler-rt
 	git-r3_checkout http://llvm.org/git/clang.git \
 		"${S}"/tools/clang
 	git-r3_checkout http://llvm.org/git/clang-tools-extra.git \
 		"${S}"/tools/clang/tools/extra
 	git-r3_checkout
 }

 src_unpack() {
 	if use llvm-tot ; then
 		trunk_src_unpack
 		return
 	fi
 	set -- "${EGIT_REPO_URIS[@]}"
 		while [[ $# -gt 0 ]]; do
 			ESVN_PROJECT=$1 \
 			EGIT_SOURCEDIR="${S}/$2" \
 			EGIT_REPO_URI=$3 \
 			EGIT_COMMIT=$4 \
 			git-2_src_unpack
 			shift 4
 		done
 }

 pick_cherries() {
 	# clang
 	local CHERRIES=""
 	pushd "${S}"/tools/clang >/dev/null || die
 	for cherry in ${CHERRIES}; do
 		epatch "${FILESDIR}/cherry/${cherry}.patch"
 	done
 	popd >/dev/null || die

 	# llvm
 	CHERRIES=""
 	CHERRIES+=" f1cb8efedeb65da55ff87449a6c83ad7e839b090 " # r320764
 	pushd "${S}" >/dev/null || die
 	for cherry in ${CHERRIES}; do
 		epatch "${FILESDIR}/cherry/${cherry}.patch"
 	done
 	popd >/dev/null || die

 	# compiler-rt
 	CHERRIES=""
 	pushd "${S}"/projects/compiler-rt >/dev/null || die
 	for cherry in ${CHERRIES}; do
 		epatch "${FILESDIR}/cherry/${cherry}.patch"
 	done
 	popd >/dev/null || die
 }

 pick_next_cherries() {
 	# clang
 	local CHERRIES=""
 	CHERRIES+=" 0d816739a82da29748caf88570affb9715e18b69" # r323155
 	pushd "${S}"/tools/clang >/dev/null || die
 	for cherry in ${CHERRIES}; do
 		epatch "${FILESDIR}/cherry/${cherry}.patch"
 	done
 	popd >/dev/null || die

 	# llvm
 	CHERRIES=""
 	CHERRIES+=" 1e7ad1c95ade6d20d3e0544772e55e45d2e6edb9" # r321510
 	CHERRIES+=" fd5a8723ce9f2a6b250e85972ef859e4253ea95d" # r323155
 	CHERRIES+=" 59b64490fda69d29bb42cfdf7eec37bcc31ff833" # r324449
 	pushd "${S}" >/dev/null || die
 	for cherry in ${CHERRIES}; do
 		epatch "${FILESDIR}/cherry/${cherry}.patch"
 	done
 	popd >/dev/null || die

 	# compiler-rt
 	CHERRIES=""
 	pushd "${S}"/projects/compiler-rt >/dev/null || die
 	for cherry in ${CHERRIES}; do
 		epatch "${FILESDIR}/cherry/${cherry}.patch"
 	done
 	popd >/dev/null || die
 }

 src_prepare() {
 	if ! use llvm-tot ; then
 		use llvm-next || pick_cherries
 		use llvm-next && pick_next_cherries
 	fi
 	epatch "${FILESDIR}"/llvm-6.0-gnueabihf.patch
 	epatch "${FILESDIR}"/llvm-next-leak-whitelist.patch
 	epatch "${FILESDIR}"/clang-4.0-asan-default-path.patch

 	# Make ocaml warnings non-fatal, bug #537308
 	sed -e "/RUN/s/-warn-error A//" -i test/Bindings/OCaml/*ml  || die

 	# Allow custom cmake build types (like 'Gentoo')
 	epatch "${FILESDIR}"/cmake/${PN}-3.8-allow_custom_cmake_build_types.patch

 	# crbug/591436
 	epatch "${FILESDIR}"/clang-executable-detection.patch

 	# crbug/606391
 	epatch "${FILESDIR}"/${PN}-3.8-invocation.patch

 	epatch "${FILESDIR}"/llvm-3.9-dwarf-version.patch

 	# Link libgcc_eh when using compiler-rt as default rtlib.
 	# https://llvm.org/bugs/show_bug.cgi?id=28681
 	epatch "${FILESDIR}"/clang-6.0-enable-libgcc-with-compiler-rt.patch

 	if use clang; then
 		# Automatically select active system GCC's libraries, bugs #406163 and #417913
 		epatch "${FILESDIR}"/clang-3.5-gentoo-runtime-gcc-detection-v3.patch

 		# Install clang runtime into /usr/lib/clang
 		# https://llvm.org/bugs/show_bug.cgi?id=23792
 		epatch "${FILESDIR}"/cmake/clang-0001-Install-clang-runtime-into-usr-lib-without-suffix-3.8.patch
 		epatch "${FILESDIR}"/cmake/compiler-rt-0001-cmake-Install-compiler-rt-into-usr-lib-without-suffi.patch

 		# Make it possible to override CLANG_LIBDIR_SUFFIX
 		# (that is used only to find LLVMgold.so)
 		# https://llvm.org/bugs/show_bug.cgi?id=23793
 		epatch "${FILESDIR}"/cmake/clang-0002-cmake-Make-CLANG_LIBDIR_SUFFIX-overridable.patch

 		# Fix WX sections, bug #421527
 		find "${S}"/projects/compiler-rt/lib/builtins -type f -name \*.S -exec sed \
 			-e '$a\\n#if defined(__linux__) && defined(__ELF__)\n.section .note.GNU-stack,"",%progbits\n#endif' \
 			-i {} \; || die
 	fi

 	if use lldb; then
 		# Do not install dummy readline.so module from
 		# https://llvm.org/bugs/show_bug.cgi?id=18841
 		sed -e 's/add_subdirectory(readline)/#&/' \
 			-i tools/lldb/scripts/Python/modules/CMakeLists.txt || die
 	fi

 	python_setup

 	# User patches
 	epatch_user

 	# Native libdir is used to hold LLVMgold.so
 	NATIVE_LIBDIR=$(get_libdir)
 }

 enable_asserts() {
 	# Enable assertions for llvm-next build
 	if use llvm-next || use llvm-tot; then
 		echo yes
 	else
 		usex debug
 	fi
 }

 multilib_src_configure() {
 	local targets
 	if use multitarget; then
 		targets=all
 	else
 		targets='host;CppBackend'
 		use video_cards_radeon && targets+=';AMDGPU'
 	fi

 	local ffi_cflags ffi_ldflags
 	if use libffi; then
 		ffi_cflags=$(pkg-config --cflags-only-I libffi)
 		ffi_ldflags=$(pkg-config --libs-only-L libffi)
 	fi

 	local libdir=$(get_libdir)
 	local mycmakeargs=(
 		"${mycmakeargs[@]}"
 		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}

 		-DLLVM_BUILD_LLVM_DYLIB=ON
 		-DLLVM_LINK_LLVM_DYLIB=ON
 		-DLLVM_ENABLE_TIMESTAMPS=OFF
 		-DLLVM_TARGETS_TO_BUILD="${targets}"
 		-DLLVM_BUILD_TESTS=$(usex test)

 		-DLLVM_ENABLE_FFI=$(usex libffi)
 		-DLLVM_ENABLE_TERMINFO=$(usex ncurses)
 		-DLLVM_ENABLE_ASSERTIONS=$(enable_asserts)
 		-DLLVM_ENABLE_EH=ON
 		-DLLVM_ENABLE_RTTI=ON

 		-DWITH_POLLY=OFF # TODO

 		-DLLVM_HOST_TRIPLE="${CHOST}"

 		-DFFI_INCLUDE_DIR="${ffi_cflags#-I}"
 		-DFFI_LIBRARY_DIR="${ffi_ldflags#-L}"
 		-DLLVM_BINUTILS_INCDIR="${SYSROOT}"/usr/include

 		-DHAVE_HISTEDIT_H=$(usex libedit)
 		-DENABLE_LINKER_BUILD_ID=ON
 		-DCLANG_VENDOR="Chromium OS ${PVR}"
 		# override default stdlib and rtlib
 		-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
 		-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")
 	)

 	if use clang; then
 		mycmakeargs+=(
 			-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=$(usex !xml)
 			# libgomp support fails to find headers without explicit -I
 			# furthermore, it provides only syntax checking
 			-DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
 		)
 	fi

 	if use lldb; then
 		mycmakeargs+=(
 			-DLLDB_DISABLE_LIBEDIT=$(usex !libedit)
 			-DLLDB_DISABLE_CURSES=$(usex !ncurses)
 			-DLLDB_ENABLE_TERMINFO=$(usex ncurses)
 		)
 	fi

 	if ! multilib_is_native_abi || ! use ocaml; then
 		mycmakeargs+=(
 			-DOCAMLFIND=NO
 		)
 	fi
 #	Note: go bindings have no CMake rules at the moment
 #	but let's kill the check in case they are introduced
 #	if ! multilib_is_native_abi || ! use go; then
 		mycmakeargs+=(
 			-DGO_EXECUTABLE=GO_EXECUTABLE-NOTFOUND
 		)
 #	fi

 	if multilib_is_native_abi; then
 		mycmakeargs+=(
 			-DLLVM_BUILD_DOCS=$(usex doc)
 			-DLLVM_ENABLE_SPHINX=$(usex doc)
 			-DLLVM_ENABLE_DOXYGEN=OFF
 			-DLLVM_INSTALL_HTML="${EPREFIX}/usr/share/doc/${PF}/html"
 			-DSPHINX_WARNINGS_AS_ERRORS=OFF
 			-DLLVM_INSTALL_UTILS=ON
 		)

 		if use clang; then
 			mycmakeargs+=(
 				-DCLANG_INSTALL_HTML="${EPREFIX}/usr/share/doc/${PF}/clang"
 			)
 		fi

 		if use gold; then
 			mycmakeargs+=(
 				-DLLVM_BINUTILS_INCDIR="${EPREFIX}"/usr/include
 			)
 		fi

 		if use lldb; then
 			mycmakeargs+=(
 				-DLLDB_DISABLE_PYTHON=$(usex !python)
 			)
 		fi

 	else
 		if use clang; then
 			mycmakeargs+=(
 				# disable compiler-rt on non-native ABI because:
 				# 1. it fails to configure because of -m32
 				# 2. it is shared between ABIs so no point building
 				# it multiple times
 				-DLLVM_EXTERNAL_COMPILER_RT_BUILD=OFF
 				-DLLVM_EXTERNAL_CLANG_TOOLS_EXTRA_BUILD=OFF
 			)
 		fi
 		if use lldb; then
 			mycmakeargs+=(
 				# only run swig on native abi
 				-DLLDB_DISABLE_PYTHON=ON
 			)
 		fi
 	fi

 	if use clang; then
 		mycmakeargs+=(
 			-DCLANG_ENABLE_ARCMT=$(usex static-analyzer)
 			-DCLANG_ENABLE_STATIC_ANALYZER=$(usex static-analyzer)
 			-DCLANG_LIBDIR_SUFFIX="${NATIVE_LIBDIR#lib}"
 		)

 		# -- not needed when compiler-rt is built with host compiler --
 		# cmake passes host C*FLAGS to compiler-rt build
 		# which is performed using clang, so we need to filter out
 		# some flags clang does not support
 		# (if you know some more flags that don't work, let us know)
 		#filter-flags -msahf -frecord-gcc-switches
 	fi

 	cmake-utils_src_configure
 }

 multilib_src_compile() {
 	cmake-utils_src_compile
 	# TODO: not sure why this target is not correctly called
 	multilib_is_native_abi && use doc && use ocaml && cmake-utils_src_make docs/ocaml_doc

 	pax-mark m "${BUILD_DIR}"/bin/llvm-rtdyld
 	pax-mark m "${BUILD_DIR}"/bin/lli
 	pax-mark m "${BUILD_DIR}"/bin/lli-child-target

 	if use test; then
 		pax-mark m "${BUILD_DIR}"/unittests/ExecutionEngine/Orc/OrcJITTests
 		pax-mark m "${BUILD_DIR}"/unittests/ExecutionEngine/MCJIT/MCJITTests
 		pax-mark m "${BUILD_DIR}"/unittests/Support/SupportTests
 	fi
 }

 multilib_src_test() {
 	# respect TMPDIR!
 	local -x LIT_PRESERVES_TMP=1
 	local test_targets=( check )
 	# clang tests won't work on non-native ABI because we skip compiler-rt
 	multilib_is_native_abi && use clang && test_targets+=( check-clang )
 	cmake-utils_src_make "${test_targets[@]}"
 }

 src_install() {
 	local MULTILIB_CHOST_TOOLS=(
 		/usr/bin/llvm-config
 	)

 	local MULTILIB_WRAPPED_HEADERS=(
 		/usr/include/llvm/Config/config.h
 		/usr/include/llvm/Config/llvm-config.h
 	)

 	if use clang; then
 		# note: magic applied in multilib_src_install()!
 		CLANG_VERSION=3.8

 		MULTILIB_CHOST_TOOLS+=(
 			/usr/bin/clang
 			/usr/bin/clang++
 			/usr/bin/clang-cl
 			/usr/bin/clang-${CLANG_VERSION}
 			/usr/bin/clang++-${CLANG_VERSION}
 			/usr/bin/clang-cl-${CLANG_VERSION}
 		)

 		MULTILIB_WRAPPED_HEADERS+=(
 			/usr/include/clang/Config/config.h
 		)
 	fi

 	multilib-minimal_src_install
 }

 multilib_src_install() {
 	cmake-utils_src_install

 	if multilib_is_native_abi; then
 		# Install docs.
 		#use doc && dohtml -r "${S}"/docs/_build/html/

 		# Symlink the gold plugin.
 		if use gold; then
 			dodir "/usr/${CHOST}/binutils-bin/lib/bfd-plugins"
 			dosym "../../../../$(get_libdir)/LLVMgold.so" \
 				"/usr/${CHOST}/binutils-bin/lib/bfd-plugins/LLVMgold.so"
 		fi
 	fi

 	# apply CHOST and CLANG_VERSION to clang executables
 	# they're statically linked so we don't have to worry about the lib
 	if use clang; then
 		local clang_tools=( clang clang++ clang-cl )
 		local i

 		# cmake gives us:
 		# - clang-X.Y
 		# - clang -> clang-X.Y
 		# - clang++, clang-cl -> clang
 		# we want to have:
 		# - clang-X.Y
 		# - clang++-X.Y, clang-cl-X.Y -> clang-X.Y
 		# - clang, clang++, clang-cl -> clang*-X.Y
 		# so we need to fix the two tools
 		for i in "${clang_tools[@]:1}"; do
 			rm "${ED%/}/usr/bin/${i}" || die
 			dosym "clang-${CLANG_VERSION}" "/usr/bin/${i}-${CLANG_VERSION}"
 			dosym "${i}-${CLANG_VERSION}" "/usr/bin/${i}"
 		done

 		# now prepend ${CHOST} and let the multilib-build.eclass symlink it
 		if ! multilib_is_native_abi; then
 			# non-native? let's replace it with a simple wrapper
 			for i in "${clang_tools[@]}"; do
 				rm "${ED%/}/usr/bin/${i}-${CLANG_VERSION}" || die
 				cat > "${T}"/wrapper.tmp <<-_EOF_
 					#!${EPREFIX}/bin/sh
 					exec "${i}-${CLANG_VERSION}" $(get_abi_CFLAGS) "\${@}"
 				_EOF_
 				newbin "${T}"/wrapper.tmp "${i}-${CLANG_VERSION}"
 			done
 		fi
 	fi

 	local wrapper_script=clang_host_wrapper
 	cat "${FILESDIR}/clang_host_wrapper.header" \
 		"${FILESDIR}/wrapper_script_common" \
 		"${FILESDIR}/clang_host_wrapper.body" > \
 		"${D}/usr/bin/${wrapper_script}" || die
 	chmod 755 "${D}/usr/bin/${wrapper_script}" || die
 	newbin "${D}/usr/bin/clang-tidy" "clang-tidy"
 	dobin "${FILESDIR}/bisect_driver.py"
 	exeinto "/usr/bin"
 	dosym "${wrapper_script}" "/usr/bin/${CHOST}-clang"
 	dosym "${wrapper_script}" "/usr/bin/${CHOST}-clang++"
 }

 multilib_src_install_all() {
 	insinto /usr/share/vim/vimfiles
 	doins -r utils/vim/*/.
 	# some users may find it useful
 	dodoc utils/vim/vimrc
 	dobin "${S}/projects/compiler-rt/lib/asan/scripts/asan_symbolize.py"

 	if use clang; then
 		pushd tools/clang >/dev/null || die

 		if use python ; then
 			pushd bindings/python/clang >/dev/null || die

 			python_moduleinto clang
 			python_domodule *.py

 			popd >/dev/null || die
 		fi

 		# AddressSanitizer symbolizer (currently separate)
 		dobin "${S}"/projects/compiler-rt/lib/asan/scripts/asan_symbolize.py

 		popd >/dev/null || die

 		python_fix_shebang "${ED}"
 		if use static-analyzer; then
 			python_optimize "${ED}"usr/share/scan-view
 		fi
 	fi
 }

 pkg_postinst() {
 	if use clang && ! has_version 'sys-libs/libomp'; then
 		elog "To enable OpenMP support in clang, install sys-libs/libomp."
 	fi
 }
	# Copyright 1999-2015 Gentoo Foundation
	# Distributed under the terms of the GNU General Public License v2
	# $Id$

	EAPI=5

	: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
	PYTHON_COMPAT=( python2_7 )

	inherit cros-constants check-reqs cmake-utils eutils flag-o-matic git-2 git-r3 \
	multilib multilib-minimal python-single-r1 toolchain-funcs pax-utils

	DESCRIPTION="Low Level Virtual Machine"
	HOMEPAGE="http://llvm.org/"
	SRC_URI=""
	EGIT_REPO_URI="http://llvm.org/git/llvm.git
	https://github.com/llvm-mirror/llvm.git"
	LICENSE="UoI-NCSA"

	# For this version of the ebuild, llvm and llvm-next are the same. We need to roll
	# a new llvm-next.
	if use llvm-next; then

	# llvm:r321490 https://critique.corp.google.com/#review/181250307
	EGIT_REPO_URIS=(
	"llvm"
	""
	"${CROS_GIT_HOST_URL}/chromiumos/third_party/llvm.git"
	"7e6fcc775f56cdeeae061f6f8071f5c103087330" # EGIT_COMMIT r321490
	"compiler-rt"
	"projects/compiler-rt"
	"${CROS_GIT_HOST_URL}/chromiumos/third_party/compiler-rt.git"
	"3bd6c8e44cf530bbf8c0e57b571f4bfc7d48b698" # EGIT_COMMIT r321485
	"clang"
	"tools/clang"
	"${CROS_GIT_HOST_URL}/chromiumos/third_party/clang.git"
	"7e0bf617fb110ad1e246f7cb09e20e293d3b429e" # EGIT_COMMIT r321487
	"clang-tidy"
	"tools/clang/tools/extra"
	"https://git.llvm.org/git/clang-tools-extra.git"
	"057470116210d2e6bf5e726361e641c8c5de9b35" # EGIT_COMMIT r321412
	)
	else
	# llvm:r317203 https://critique.corp.google.com/#review/175206381
	EGIT_REPO_URIS=(
	"llvm"
	""
	"${CROS_GIT_HOST_URL}/chromiumos/third_party/llvm.git"
	"66af8bde13a515b8d0fa76201f0d5b428187fd13" # EGIT_COMMIT r317203
	"compiler-rt"
	"projects/compiler-rt"
	"${CROS_GIT_HOST_URL}/chromiumos/third_party/compiler-rt.git"
	"bcc227ee4af1ef3e63033b35dcb1d5627a3b2941" # EGIT_COMMIT r317186
	"clang"
	"tools/clang"
	"${CROS_GIT_HOST_URL}/chromiumos/third_party/clang.git"
	"4d085086c74a8fbce197f61548f488a63f300933" # EGIT_COMMIT r317200
	"clang-tidy"
	"tools/clang/tools/extra"
	"https://git.llvm.org/git/clang-tools-extra.git"
	"47651f3221d4ae4d2fcc274f7730e1ac853d86b8" # EGIT_COMMIT r316094
	)
	fi

	LICENSE="UoI-NCSA"
	SLOT="0/${PV%%_*}"
	KEYWORDS="-* amd64"
	IUSE="clang debug +default-compiler-rt +default-libcxx doc gold libedit +libffi
	lldb multitarget ncurses ocaml python +static-analyzer llvm-next llvm-tot
	test xml video_cards_radeon kernel_Darwin"

	COMMON_DEPEND="
	sys-libs/zlib:0=
	clang? (
	static-analyzer? ( dev-lang/perl:* )
	xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
	${PYTHON_DEPS}
	)
	gold? ( >=sys-devel/binutils-2.22:*[cxx] )
	libedit? ( dev-libs/libedit:0=[${MULTILIB_USEDEP}] )
	libffi? ( >=virtual/libffi-3.0.13-r1:0=[${MULTILIB_USEDEP}] )
	ncurses? ( >=sys-libs/ncurses-5.9-r3:5=[${MULTILIB_USEDEP}] )
	ocaml? (
	>=dev-lang/ocaml-4.00.0:0=
	dev-ml/findlib
	dev-ml/ocaml-ctypes )"
	# configparser-3.2 breaks the build (3.3 or none at all are fine)
	DEPEND="${COMMON_DEPEND}
	dev-lang/perl
	>=sys-devel/make-3.81
	>=sys-devel/flex-2.5.4
	>=sys-devel/bison-1.875d
	\|\| ( >=sys-devel/gcc-3.0 >=sys-devel/llvm-3.5
	( >=sys-freebsd/freebsd-lib-9.1-r10 sys-libs/libcxx )
	)
	\|\| ( >=sys-devel/binutils-2.18 >=sys-devel/binutils-apple-5.1 )
	kernel_Darwin? ( sys-libs/libcxx )
	clang? ( xml? ( virtual/pkgconfig ) )
	doc? ( dev-python/sphinx )
	gold? ( sys-libs/binutils-libs )
	libffi? ( virtual/pkgconfig )
	lldb? ( dev-lang/swig )
	!!<dev-python/configparser-3.3.0.2
	ocaml? ( test? ( dev-ml/ounit ) )
	${PYTHON_DEPS}"
	RDEPEND="${COMMON_DEPEND}
	clang? ( !<=sys-devel/clang-${PV}-r99 )
	abi_x86_32? ( !<=app-emulation/emul-linux-x86-baselibs-20130224-r2
	!app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)] )"
	PDEPEND="clang? ( =sys-devel/clang-${PV}-r100 )"

	# pypy gives me around 1700 unresolved tests due to open file limit
	# being exceeded. probably GC does not close them fast enough.
	REQUIRED_USE="${PYTHON_REQUIRED_USE}
	lldb? ( clang xml )"

	pkg_pretend() {
	# in megs
	# !clang !debug !multitarget -O2 400
	# !clang !debug multitarget -O2 550
	# clang !debug !multitarget -O2 950
	# clang !debug multitarget -O2 1200
	# !clang debug multitarget -O2 5G
	# clang !debug multitarget -O0 -g 12G
	# clang debug multitarget -O2 16G
	# clang debug multitarget -O0 -g 14G

	local build_size=550
	use clang && build_size=1200

	if use debug; then
	ewarn "USE=debug is known to increase the size of package considerably"
	ewarn "and cause the tests to fail."
	ewarn

	(( build_size *= 14 ))
	elif is-flagq '-g?(gdb)?([1-9])'; then
	ewarn "The C++ compiler -g option is known to increase the size of the package"
	ewarn "considerably. If you run out of space, please consider removing it."
	ewarn

	(( build_size *= 10 ))
	fi

	# Multiply by number of ABIs :).
	local abis=( $(multilib_get_enabled_abis) )
	(( build_size *= ${#abis[@]} ))

	local CHECKREQS_DISK_BUILD=${build_size}M
	check-reqs_pkg_pretend

	if [[ ${MERGE_TYPE} != binary ]]; then
	echo 'int main() {return 0;}' > "${T}"/test.cxx \|\| die
	ebegin "Trying to build a C++11 test program"
	if ! $(tc-getCXX) -std=c++11 -o /dev/null "${T}"/test.cxx; then
	eerror "LLVM-${PV} requires C++11-capable C++ compiler. Your current compiler"
	eerror "does not seem to support -std=c++11 option. Please upgrade your compiler"
	eerror "to gcc-4.7 or an equivalent version supporting C++11."
	die "Currently active compiler does not support -std=c++11"
	fi
	eend ${?}
	fi
	}

	pkg_setup() {
	pkg_pretend
	}

	trunk_src_unpack() {
	git-r3_fetch "http://llvm.org/git/compiler-rt.git
	https://github.com/llvm-mirror/compiler-rt.git"
	git-r3_fetch "http://llvm.org/git/clang.git
	https://github.com/llvm-mirror/clang.git"
	git-r3_fetch "http://llvm.org/git/clang-tools-extra.git
	https://github.com/llvm-mirror/clang-tools-extra.git"
	git-r3_fetch

	git-r3_checkout http://llvm.org/git/compiler-rt.git \
	"${S}"/projects/compiler-rt
	git-r3_checkout http://llvm.org/git/clang.git \
	"${S}"/tools/clang
	git-r3_checkout http://llvm.org/git/clang-tools-extra.git \
	"${S}"/tools/clang/tools/extra
	git-r3_checkout
	}

	src_unpack() {
	if use llvm-tot ; then
	trunk_src_unpack
	return
	fi
	set -- "${EGIT_REPO_URIS[@]}"
	while [[ $# -gt 0 ]]; do
	ESVN_PROJECT=$1 \
	EGIT_SOURCEDIR="${S}/$2" \
	EGIT_REPO_URI=$3 \
	EGIT_COMMIT=$4 \
	git-2_src_unpack
	shift 4
	done
	}

	pick_cherries() {
	# clang
	local CHERRIES=""
	pushd "${S}"/tools/clang >/dev/null \|\| die
	for cherry in ${CHERRIES}; do
	epatch "${FILESDIR}/cherry/${cherry}.patch"
	done
	popd >/dev/null \|\| die

	# llvm
	CHERRIES=""
	CHERRIES+=" f1cb8efedeb65da55ff87449a6c83ad7e839b090 " # r320764
	pushd "${S}" >/dev/null \|\| die
	for cherry in ${CHERRIES}; do
	epatch "${FILESDIR}/cherry/${cherry}.patch"
	done
	popd >/dev/null \|\| die

	# compiler-rt
	CHERRIES=""
	pushd "${S}"/projects/compiler-rt >/dev/null \|\| die
	for cherry in ${CHERRIES}; do
	epatch "${FILESDIR}/cherry/${cherry}.patch"
	done
	popd >/dev/null \|\| die
	}

	pick_next_cherries() {
	# clang
	local CHERRIES=""
	CHERRIES+=" 0d816739a82da29748caf88570affb9715e18b69" # r323155
	pushd "${S}"/tools/clang >/dev/null \|\| die
	for cherry in ${CHERRIES}; do
	epatch "${FILESDIR}/cherry/${cherry}.patch"
	done
	popd >/dev/null \|\| die

	# llvm
	CHERRIES=""
	CHERRIES+=" 1e7ad1c95ade6d20d3e0544772e55e45d2e6edb9" # r321510
	CHERRIES+=" fd5a8723ce9f2a6b250e85972ef859e4253ea95d" # r323155
	CHERRIES+=" 59b64490fda69d29bb42cfdf7eec37bcc31ff833" # r324449
	pushd "${S}" >/dev/null \|\| die
	for cherry in ${CHERRIES}; do
	epatch "${FILESDIR}/cherry/${cherry}.patch"
	done
	popd >/dev/null \|\| die

	# compiler-rt
	CHERRIES=""
	pushd "${S}"/projects/compiler-rt >/dev/null \|\| die
	for cherry in ${CHERRIES}; do
	epatch "${FILESDIR}/cherry/${cherry}.patch"
	done
	popd >/dev/null \|\| die
	}

	src_prepare() {
	if ! use llvm-tot ; then
	use llvm-next \|\| pick_cherries
	use llvm-next && pick_next_cherries
	fi
	epatch "${FILESDIR}"/llvm-6.0-gnueabihf.patch
	epatch "${FILESDIR}"/llvm-next-leak-whitelist.patch
	epatch "${FILESDIR}"/clang-4.0-asan-default-path.patch

	# Make ocaml warnings non-fatal, bug #537308
	sed -e "/RUN/s/-warn-error A//" -i test/Bindings/OCaml/*ml \|\| die

	# Allow custom cmake build types (like 'Gentoo')
	epatch "${FILESDIR}"/cmake/${PN}-3.8-allow_custom_cmake_build_types.patch

	# crbug/591436
	epatch "${FILESDIR}"/clang-executable-detection.patch

	# crbug/606391
	epatch "${FILESDIR}"/${PN}-3.8-invocation.patch

	epatch "${FILESDIR}"/llvm-3.9-dwarf-version.patch

	# Link libgcc_eh when using compiler-rt as default rtlib.
	# https://llvm.org/bugs/show_bug.cgi?id=28681
	epatch "${FILESDIR}"/clang-6.0-enable-libgcc-with-compiler-rt.patch

	if use clang; then
	# Automatically select active system GCC's libraries, bugs #406163 and #417913
	epatch "${FILESDIR}"/clang-3.5-gentoo-runtime-gcc-detection-v3.patch

	# Install clang runtime into /usr/lib/clang
	# https://llvm.org/bugs/show_bug.cgi?id=23792
	epatch "${FILESDIR}"/cmake/clang-0001-Install-clang-runtime-into-usr-lib-without-suffix-3.8.patch
	epatch "${FILESDIR}"/cmake/compiler-rt-0001-cmake-Install-compiler-rt-into-usr-lib-without-suffi.patch

	# Make it possible to override CLANG_LIBDIR_SUFFIX
	# (that is used only to find LLVMgold.so)
	# https://llvm.org/bugs/show_bug.cgi?id=23793
	epatch "${FILESDIR}"/cmake/clang-0002-cmake-Make-CLANG_LIBDIR_SUFFIX-overridable.patch

	# Fix WX sections, bug #421527
	find "${S}"/projects/compiler-rt/lib/builtins -type f -name \*.S -exec sed \
	-e '$a\\n#if defined(__linux__) && defined(__ELF__)\n.section .note.GNU-stack,"",%progbits\n#endif' \
	-i {} \; \|\| die
	fi

	if use lldb; then
	# Do not install dummy readline.so module from
	# https://llvm.org/bugs/show_bug.cgi?id=18841
	sed -e 's/add_subdirectory(readline)/#&/' \
	-i tools/lldb/scripts/Python/modules/CMakeLists.txt \|\| die
	fi

	python_setup

	# User patches
	epatch_user

	# Native libdir is used to hold LLVMgold.so
	NATIVE_LIBDIR=$(get_libdir)
	}

	enable_asserts() {
	# Enable assertions for llvm-next build
	if use llvm-next \|\| use llvm-tot; then
	echo yes
	else
	usex debug
	fi
	}

	multilib_src_configure() {
	local targets
	if use multitarget; then
	targets=all
	else
	targets='host;CppBackend'
	use video_cards_radeon && targets+=';AMDGPU'
	fi

	local ffi_cflags ffi_ldflags
	if use libffi; then
	ffi_cflags=$(pkg-config --cflags-only-I libffi)
	ffi_ldflags=$(pkg-config --libs-only-L libffi)
	fi

	local libdir=$(get_libdir)
	local mycmakeargs=(
	"${mycmakeargs[@]}"
	-DLLVM_LIBDIR_SUFFIX=${libdir#lib}

	-DLLVM_BUILD_LLVM_DYLIB=ON
	-DLLVM_LINK_LLVM_DYLIB=ON
	-DLLVM_ENABLE_TIMESTAMPS=OFF
	-DLLVM_TARGETS_TO_BUILD="${targets}"
	-DLLVM_BUILD_TESTS=$(usex test)

	-DLLVM_ENABLE_FFI=$(usex libffi)
	-DLLVM_ENABLE_TERMINFO=$(usex ncurses)
	-DLLVM_ENABLE_ASSERTIONS=$(enable_asserts)
	-DLLVM_ENABLE_EH=ON
	-DLLVM_ENABLE_RTTI=ON

	-DWITH_POLLY=OFF # TODO

	-DLLVM_HOST_TRIPLE="${CHOST}"

	-DFFI_INCLUDE_DIR="${ffi_cflags#-I}"
	-DFFI_LIBRARY_DIR="${ffi_ldflags#-L}"
	-DLLVM_BINUTILS_INCDIR="${SYSROOT}"/usr/include

	-DHAVE_HISTEDIT_H=$(usex libedit)
	-DENABLE_LINKER_BUILD_ID=ON
	-DCLANG_VENDOR="Chromium OS ${PVR}"
	# override default stdlib and rtlib
	-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
	-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")
	)

	if use clang; then
	mycmakeargs+=(
	-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=$(usex !xml)
	# libgomp support fails to find headers without explicit -I
	# furthermore, it provides only syntax checking
	-DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
	)
	fi

	if use lldb; then
	mycmakeargs+=(
	-DLLDB_DISABLE_LIBEDIT=$(usex !libedit)
	-DLLDB_DISABLE_CURSES=$(usex !ncurses)
	-DLLDB_ENABLE_TERMINFO=$(usex ncurses)
	)
	fi

	if ! multilib_is_native_abi \|\| ! use ocaml; then
	mycmakeargs+=(
	-DOCAMLFIND=NO
	)
	fi
	# Note: go bindings have no CMake rules at the moment
	# but let's kill the check in case they are introduced
	# if ! multilib_is_native_abi \|\| ! use go; then
	mycmakeargs+=(
	-DGO_EXECUTABLE=GO_EXECUTABLE-NOTFOUND
	)
	# fi

	if multilib_is_native_abi; then
	mycmakeargs+=(
	-DLLVM_BUILD_DOCS=$(usex doc)
	-DLLVM_ENABLE_SPHINX=$(usex doc)
	-DLLVM_ENABLE_DOXYGEN=OFF
	-DLLVM_INSTALL_HTML="${EPREFIX}/usr/share/doc/${PF}/html"
	-DSPHINX_WARNINGS_AS_ERRORS=OFF
	-DLLVM_INSTALL_UTILS=ON
	)

	if use clang; then
	mycmakeargs+=(
	-DCLANG_INSTALL_HTML="${EPREFIX}/usr/share/doc/${PF}/clang"
	)
	fi

	if use gold; then
	mycmakeargs+=(
	-DLLVM_BINUTILS_INCDIR="${EPREFIX}"/usr/include
	)
	fi

	if use lldb; then
	mycmakeargs+=(
	-DLLDB_DISABLE_PYTHON=$(usex !python)
	)
	fi

	else
	if use clang; then
	mycmakeargs+=(
	# disable compiler-rt on non-native ABI because:
	# 1. it fails to configure because of -m32
	# 2. it is shared between ABIs so no point building
	# it multiple times
	-DLLVM_EXTERNAL_COMPILER_RT_BUILD=OFF
	-DLLVM_EXTERNAL_CLANG_TOOLS_EXTRA_BUILD=OFF
	)
	fi
	if use lldb; then
	mycmakeargs+=(
	# only run swig on native abi
	-DLLDB_DISABLE_PYTHON=ON
	)
	fi
	fi

	if use clang; then
	mycmakeargs+=(
	-DCLANG_ENABLE_ARCMT=$(usex static-analyzer)
	-DCLANG_ENABLE_STATIC_ANALYZER=$(usex static-analyzer)
	-DCLANG_LIBDIR_SUFFIX="${NATIVE_LIBDIR#lib}"
	)

	# -- not needed when compiler-rt is built with host compiler --
	# cmake passes host C*FLAGS to compiler-rt build
	# which is performed using clang, so we need to filter out
	# some flags clang does not support
	# (if you know some more flags that don't work, let us know)
	#filter-flags -msahf -frecord-gcc-switches
	fi

	cmake-utils_src_configure
	}

	multilib_src_compile() {
	cmake-utils_src_compile
	# TODO: not sure why this target is not correctly called
	multilib_is_native_abi && use doc && use ocaml && cmake-utils_src_make docs/ocaml_doc

	pax-mark m "${BUILD_DIR}"/bin/llvm-rtdyld
	pax-mark m "${BUILD_DIR}"/bin/lli
	pax-mark m "${BUILD_DIR}"/bin/lli-child-target

	if use test; then
	pax-mark m "${BUILD_DIR}"/unittests/ExecutionEngine/Orc/OrcJITTests
	pax-mark m "${BUILD_DIR}"/unittests/ExecutionEngine/MCJIT/MCJITTests
	pax-mark m "${BUILD_DIR}"/unittests/Support/SupportTests
	fi
	}

	multilib_src_test() {
	# respect TMPDIR!
	local -x LIT_PRESERVES_TMP=1
	local test_targets=( check )
	# clang tests won't work on non-native ABI because we skip compiler-rt
	multilib_is_native_abi && use clang && test_targets+=( check-clang )
	cmake-utils_src_make "${test_targets[@]}"
	}

	src_install() {
	local MULTILIB_CHOST_TOOLS=(
	/usr/bin/llvm-config
	)

	local MULTILIB_WRAPPED_HEADERS=(
	/usr/include/llvm/Config/config.h
	/usr/include/llvm/Config/llvm-config.h
	)

	if use clang; then
	# note: magic applied in multilib_src_install()!
	CLANG_VERSION=3.8

	MULTILIB_CHOST_TOOLS+=(
	/usr/bin/clang
	/usr/bin/clang++
	/usr/bin/clang-cl
	/usr/bin/clang-${CLANG_VERSION}
	/usr/bin/clang++-${CLANG_VERSION}
	/usr/bin/clang-cl-${CLANG_VERSION}
	)

	MULTILIB_WRAPPED_HEADERS+=(
	/usr/include/clang/Config/config.h
	)
	fi

	multilib-minimal_src_install
	}

	multilib_src_install() {
	cmake-utils_src_install

	if multilib_is_native_abi; then
	# Install docs.
	#use doc && dohtml -r "${S}"/docs/_build/html/

	# Symlink the gold plugin.
	if use gold; then
	dodir "/usr/${CHOST}/binutils-bin/lib/bfd-plugins"
	dosym "../../../../$(get_libdir)/LLVMgold.so" \
	"/usr/${CHOST}/binutils-bin/lib/bfd-plugins/LLVMgold.so"
	fi
	fi

	# apply CHOST and CLANG_VERSION to clang executables
	# they're statically linked so we don't have to worry about the lib
	if use clang; then
	local clang_tools=( clang clang++ clang-cl )
	local i

	# cmake gives us:
	# - clang-X.Y
	# - clang -> clang-X.Y
	# - clang++, clang-cl -> clang
	# we want to have:
	# - clang-X.Y
	# - clang++-X.Y, clang-cl-X.Y -> clang-X.Y
	# - clang, clang++, clang-cl -> clang*-X.Y
	# so we need to fix the two tools
	for i in "${clang_tools[@]:1}"; do
	rm "${ED%/}/usr/bin/${i}" \|\| die
	dosym "clang-${CLANG_VERSION}" "/usr/bin/${i}-${CLANG_VERSION}"
	dosym "${i}-${CLANG_VERSION}" "/usr/bin/${i}"
	done

	# now prepend ${CHOST} and let the multilib-build.eclass symlink it
	if ! multilib_is_native_abi; then
	# non-native? let's replace it with a simple wrapper
	for i in "${clang_tools[@]}"; do
	rm "${ED%/}/usr/bin/${i}-${CLANG_VERSION}" \|\| die
	cat > "${T}"/wrapper.tmp <<-_EOF_
	#!${EPREFIX}/bin/sh
	exec "${i}-${CLANG_VERSION}" $(get_abi_CFLAGS) "\${@}"
	_EOF_
	newbin "${T}"/wrapper.tmp "${i}-${CLANG_VERSION}"
	done
	fi
	fi

	local wrapper_script=clang_host_wrapper
	cat "${FILESDIR}/clang_host_wrapper.header" \
	"${FILESDIR}/wrapper_script_common" \
	"${FILESDIR}/clang_host_wrapper.body" > \
	"${D}/usr/bin/${wrapper_script}" \|\| die
	chmod 755 "${D}/usr/bin/${wrapper_script}" \|\| die
	newbin "${D}/usr/bin/clang-tidy" "clang-tidy"
	dobin "${FILESDIR}/bisect_driver.py"
	exeinto "/usr/bin"
	dosym "${wrapper_script}" "/usr/bin/${CHOST}-clang"
	dosym "${wrapper_script}" "/usr/bin/${CHOST}-clang++"
	}

	multilib_src_install_all() {
	insinto /usr/share/vim/vimfiles
	doins -r utils/vim/*/.
	# some users may find it useful
	dodoc utils/vim/vimrc
	dobin "${S}/projects/compiler-rt/lib/asan/scripts/asan_symbolize.py"

	if use clang; then
	pushd tools/clang >/dev/null \|\| die

	if use python ; then
	pushd bindings/python/clang >/dev/null \|\| die

	python_moduleinto clang
	python_domodule *.py

	popd >/dev/null \|\| die
	fi

	# AddressSanitizer symbolizer (currently separate)
	dobin "${S}"/projects/compiler-rt/lib/asan/scripts/asan_symbolize.py

	popd >/dev/null \|\| die

	python_fix_shebang "${ED}"
	if use static-analyzer; then
	python_optimize "${ED}"usr/share/scan-view
	fi
	fi
	}

	pkg_postinst() {
	if use clang && ! has_version 'sys-libs/libomp'; then
	elog "To enable OpenMP support in clang, install sys-libs/libomp."
	fi
	}