sys-devel/llvm/llvm-3.9.0.ebuild - chromiumos/overlays/portage - Git at Google

 # Copyright 1999-2016 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$

 EAPI=6

 : ${CMAKE_MAKEFILE_GENERATOR:=ninja}
 # (needed due to lib32 find_library fix)
 CMAKE_MIN_VERSION=3.6.1-r1
 PYTHON_COMPAT=( python2_7 )

 inherit check-reqs cmake-utils eutils flag-o-matic multilib \
 	multilib-minimal python-single-r1 toolchain-funcs pax-utils prefix

 DESCRIPTION="Low Level Virtual Machine"
 HOMEPAGE="http://llvm.org/"
 SRC_URI="http://llvm.org/releases/${PV}/${P}.src.tar.xz
 	clang? ( http://llvm.org/releases/${PV}/compiler-rt-${PV}.src.tar.xz
 		http://llvm.org/releases/${PV}/cfe-${PV}.src.tar.xz
 		http://llvm.org/releases/${PV}/clang-tools-extra-${PV}.src.tar.xz )
 	lldb? ( http://llvm.org/releases/${PV}/lldb-${PV}.src.tar.xz )
 	!doc? ( http://dev.gentoo.org/~mgorny/dist/${PN}-3.9.0_rc3-manpages.tar.bz2 )"

 # Keep in sync with CMakeLists.txt
 ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Mips MSP430
 	NVPTX PowerPC Sparc SystemZ X86 XCore )
 ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )

 LICENSE="UoI-NCSA"
 SLOT="0/${PV}"
 KEYWORDS="~amd64 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux"
 IUSE="clang debug default-compiler-rt default-libcxx doc gold libedit +libffi
 	lldb multitarget ncurses ocaml python +sanitize +static-analyzer test xml
 	elibc_musl kernel_Darwin kernel_FreeBSD ${ALL_LLVM_TARGETS[*]}"

 COMMON_DEPEND="
 	sys-libs/zlib:0=
 	clang? (
 		python? ( ${PYTHON_DEPS} )
 		static-analyzer? (
 			dev-lang/perl:*
 			${PYTHON_DEPS}
 		)
 		xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
 	)
 	gold? ( >=sys-devel/binutils-2.22:*[cxx] )
 	libedit? ( dev-libs/libedit:0=[${MULTILIB_USEDEP}] )
 	libffi? ( >=virtual/libffi-3.0.13-r1:0=[${MULTILIB_USEDEP}] )
 	lldb? ( dev-python/six[${PYTHON_USEDEP}] )
 	ncurses? ( >=sys-libs/ncurses-5.9-r3:0=[${MULTILIB_USEDEP}] )
 	ocaml? (
 		>=dev-lang/ocaml-4.00.0:0=
 		dev-ml/ocaml-ctypes:=
 		!!<=sys-devel/llvm-3.7.0-r1[ocaml] )"
 # configparser-3.2 breaks the build (3.3 or none at all are fine)
 DEPEND="${COMMON_DEPEND}
 	dev-lang/perl
 	>=sys-devel/make-3.81
 	>=sys-devel/flex-2.5.4
 	>=sys-devel/bison-1.875d
 	|| ( >=sys-devel/gcc-3.0 >=sys-devel/llvm-3.5
 		( >=sys-freebsd/freebsd-lib-9.1-r10 sys-libs/libcxx )
 	)
 	|| ( >=sys-devel/binutils-2.18 >=sys-devel/binutils-apple-5.1 )
 	kernel_Darwin? ( <sys-libs/libcxx-${PV%_rc*}.9999 )
 	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? ( dev-ml/findlib
 		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
 		~sys-devel/clang-runtime-${PV}
 	)
 	default-libcxx? ( sys-libs/libcxx )
 	kernel_Darwin? ( =sys-libs/libcxx-${PV%.*}* )"

 # 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 )
 	|| ( ${ALL_LLVM_TARGETS[*]} )
 	multitarget? ( ${ALL_LLVM_TARGETS[*]} )"

 S=${WORKDIR}/${P/_}.src

 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
 }

 pkg_setup() {
 	pkg_pretend
 }

 src_unpack() {
 	default

 	if use clang; then
 		mv "${WORKDIR}"/cfe-${PV/_}.src "${S}"/tools/clang \
 			|| die "clang source directory move failed"
 		mv "${WORKDIR}"/compiler-rt-${PV/_}.src "${S}"/projects/compiler-rt \
 			|| die "compiler-rt source directory move failed"
 		mv "${WORKDIR}"/clang-tools-extra-${PV/_}.src "${S}"/tools/clang/tools/extra \
 			|| die "clang-tools-extra source directory move failed"
 	fi

 	if use lldb; then
 		mv "${WORKDIR}"/lldb-${PV/_}.src "${S}"/tools/lldb \
 			|| die "lldb source directory move failed"
 	fi
 }

 src_prepare() {
 	python_setup

 	# Fix libdir for ocaml bindings install, bug #559134
 	eapply "${FILESDIR}"/3.9.0/0001-cmake-Install-OCaml-modules-into-correct-package-loc.patch
 	# Do not build/install ocaml docs with USE=-doc, bug #562008
 	eapply "${FILESDIR}"/3.9.0/0002-cmake-Make-OCaml-docs-dependent-on-LLVM_BUILD_DOCS.patch

 	# Make it possible to override Sphinx HTML install dirs
 	# https://llvm.org/bugs/show_bug.cgi?id=23780
 	eapply "${FILESDIR}"/3.9.0/0003-cmake-Support-overriding-Sphinx-HTML-doc-install-dir.patch

 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
 	eapply "${FILESDIR}"/9999/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch

 	# Allow custom cmake build types (like 'Gentoo')
 	eapply "${FILESDIR}"/9999/0006-cmake-Remove-the-CMAKE_BUILD_TYPE-assertion.patch

 	# Fix llvm-config for shared linking and sane flags
 	# https://bugs.gentoo.org/show_bug.cgi?id=565358
 	eapply "${FILESDIR}"/3.9.0/llvm-config-r1.patch

 	# Restore SOVERSIONs for shared libraries
 	# https://bugs.gentoo.org/show_bug.cgi?id=578392
 	eapply "${FILESDIR}"/9999/0008-cmake-Restore-SOVERSIONs-on-shared-libraries.patch

 	# support building llvm against musl-libc
 	use elibc_musl && eapply "${FILESDIR}"/9999/musl-fixes.patch

 	# disable use of SDK on OSX, bug #568758
 	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die

 	# Workaround, can be compiled with gcc on Gentoo/FreeBSD, bug #578064
 	use kernel_FreeBSD && tc-is-gcc && append-cppflags "-D_GLIBCXX_USE_C99"

 	if use clang; then
 		# Automatically select active system GCC's libraries, bugs #406163 and #417913
 		eapply "${FILESDIR}"/3.9.0/clang/gentoo-runtime-gcc-detection-v3.patch

 		eapply "${FILESDIR}"/3.9.0/clang/darwin_prefix-include-paths.patch
 		eprefixify tools/clang/lib/Frontend/InitHeaderSearch.cpp

 		eapply "${FILESDIR}"/3.8.1/compiler-rt/darwin-default-sysroot.patch

 		pushd "${S}"/tools/clang >/dev/null || die
 		# be able to specify default values for -stdlib and -rtlib at build time
 		eapply "${FILESDIR}"/3.9.0/clang/default-libs.patch
 		popd >/dev/null || die

 		sed -i -e "s^@EPREFIX@^${EPREFIX}^" \
 			tools/clang/tools/scan-build/bin/scan-build || die

 		# Install clang runtime into /usr/lib/clang
 		# https://llvm.org/bugs/show_bug.cgi?id=23792
 		eapply "${FILESDIR}"/3.9.0/clang/0001-Install-clang-runtime-into-usr-lib-without-suffix.patch
 		eapply "${FILESDIR}"/3.9.0/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
 		eapply "${FILESDIR}"/3.9.0/clang/0002-cmake-Make-CLANG_LIBDIR_SUFFIX-overridable.patch

 		# Fix git-clang-format shebang, bug #562688
 		python_fix_shebang tools/clang/tools/clang-format/git-clang-format

 		pushd projects/compiler-rt >/dev/null || die

 		# Fix WX sections, bug #421527
 		find 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

 		popd >/dev/null || 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
 		# Do not install bundled six module
 		eapply "${FILESDIR}"/3.9.0/lldb/six.patch
 	fi

 	# User patches
 	eapply_user

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

 multilib_src_configure() {
 	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=$(get_libdir)
 	local mycmakeargs=(
 		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}

 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
 		-DLLVM_BUILD_TESTS=$(usex test)

 		-DLLVM_ENABLE_FFI=$(usex libffi)
 		-DLLVM_ENABLE_TERMINFO=$(usex ncurses)
 		-DLLVM_ENABLE_ASSERTIONS=$(usex debug)
 		-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}"

 		-DHAVE_HISTEDIT_H=$(usex libedit)
 	)

 	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

 			# override default stdlib and rtlib
 			-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
 			-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")

 			# compiler-rt's test cases depend on sanitizer
 			-DCOMPILER_RT_BUILD_SANITIZERS=$(usex sanitize)
 			-DCOMPILER_RT_INCLUDE_TESTS=$(usex sanitize)
 		)
 	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

 	if tc-is-cross-compiler; then
 		[[ -x "/usr/bin/llvm-tblgen" ]] \
 			|| die "/usr/bin/llvm-tblgen not found or usable"
 		mycmakeargs+=(
 			-DCMAKE_CROSSCOMPILING=ON
 			-DLLVM_TABLEGEN=/usr/bin/llvm-tblgen
 		)

 		if use clang; then
 			[[ -x "/usr/bin/clang-tblgen" ]] \
 				|| die "/usr/bin/clang-tblgen not found or usable"
 			mycmakeargs+=(
 				-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
 			)
 		fi
 	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
 		MULTILIB_WRAPPED_HEADERS+=(
 			/usr/include/clang/Config/config.h
 		)
 	fi

 	multilib-minimal_src_install

 	if use clang; then
 		# Apply CHOST and version suffix to clang tools
 		local clang_version=${PV%.*}
 		local clang_tools=( clang clang++ clang-cl clang-cpp )
 		local abi i

 		# cmake gives us:
 		# - clang-X.Y
 		# - clang -> clang-X.Y
 		# - clang++, clang-cl, clang-cpp -> clang
 		# we want to have:
 		# - clang-X.Y
 		# - clang++-X.Y, clang-cl-X.Y, clang-cpp-X.Y -> clang-X.Y
 		# - clang, clang++, clang-cl, clang-cpp -> clang*-X.Y
 		# also in CHOST variant
 		for i in "${clang_tools[@]:1}"; do
 			rm -f "${ED%/}/usr/bin/${i}" || die
 			dosym "clang-${clang_version}" "/usr/bin/${i}-${clang_version}"
 			dosym "${i}-${clang_version}" "/usr/bin/${i}"
 		done

 		# now create target symlinks for all supported ABIs
 		for abi in $(get_all_abis); do
 			local abi_chost=$(get_abi_CHOST "${abi}")
 			for i in "${clang_tools[@]}"; do
 				dosym "${i}-${clang_version}" \
 					"/usr/bin/${abi_chost}-${i}-${clang_version}"
 				dosym "${abi_chost}-${i}-${clang_version}" \
 					"/usr/bin/${abi_chost}-${i}"
 			done
 		done
 	fi

 	# Remove unnecessary headers on FreeBSD, bug #417171
 	if use kernel_FreeBSD && use clang; then
 		rm "${ED}"usr/lib/clang/${PV}/include/{std,float,iso,limits,tgmath,varargs}*.h || die
 	fi
 }

 multilib_src_install() {
 	cmake-utils_src_install

 	if multilib_is_native_abi; then
 		# 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
 }

 multilib_src_install_all() {
 	insinto /usr/share/vim/vimfiles
 	doins -r utils/vim/*/.
 	# some users may find it useful
 	dodoc utils/vim/vimrc

 	# Install man pages from the prebuilt package
 	if ! use doc; then
 		if ! use clang; then
 			rm "${WORKDIR}"/${PN}-3.9.0_rc3-manpages/{clang,extraclangtools,scan-build}.1 || die
 		fi

 		doman "${WORKDIR}"/${PN}-3.9.0_rc3-manpages/*.1
 	fi

 	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
 }
	# Copyright 1999-2016 Gentoo Foundation
	# Distributed under the terms of the GNU General Public License v2
	# $Id$

	EAPI=6

	: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
	# (needed due to lib32 find_library fix)
	CMAKE_MIN_VERSION=3.6.1-r1
	PYTHON_COMPAT=( python2_7 )

	inherit check-reqs cmake-utils eutils flag-o-matic multilib \
	multilib-minimal python-single-r1 toolchain-funcs pax-utils prefix

	DESCRIPTION="Low Level Virtual Machine"
	HOMEPAGE="http://llvm.org/"
	SRC_URI="http://llvm.org/releases/${PV}/${P}.src.tar.xz
	clang? ( http://llvm.org/releases/${PV}/compiler-rt-${PV}.src.tar.xz
	http://llvm.org/releases/${PV}/cfe-${PV}.src.tar.xz
	http://llvm.org/releases/${PV}/clang-tools-extra-${PV}.src.tar.xz )
	lldb? ( http://llvm.org/releases/${PV}/lldb-${PV}.src.tar.xz )
	!doc? ( http://dev.gentoo.org/~mgorny/dist/${PN}-3.9.0_rc3-manpages.tar.bz2 )"

	# Keep in sync with CMakeLists.txt
	ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Mips MSP430
	NVPTX PowerPC Sparc SystemZ X86 XCore )
	ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )

	LICENSE="UoI-NCSA"
	SLOT="0/${PV}"
	KEYWORDS="~amd64 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux"
	IUSE="clang debug default-compiler-rt default-libcxx doc gold libedit +libffi
	lldb multitarget ncurses ocaml python +sanitize +static-analyzer test xml
	elibc_musl kernel_Darwin kernel_FreeBSD ${ALL_LLVM_TARGETS[*]}"

	COMMON_DEPEND="
	sys-libs/zlib:0=
	clang? (
	python? ( ${PYTHON_DEPS} )
	static-analyzer? (
	dev-lang/perl:*
	${PYTHON_DEPS}
	)
	xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
	)
	gold? ( >=sys-devel/binutils-2.22:*[cxx] )
	libedit? ( dev-libs/libedit:0=[${MULTILIB_USEDEP}] )
	libffi? ( >=virtual/libffi-3.0.13-r1:0=[${MULTILIB_USEDEP}] )
	lldb? ( dev-python/six[${PYTHON_USEDEP}] )
	ncurses? ( >=sys-libs/ncurses-5.9-r3:0=[${MULTILIB_USEDEP}] )
	ocaml? (
	>=dev-lang/ocaml-4.00.0:0=
	dev-ml/ocaml-ctypes:=
	!!<=sys-devel/llvm-3.7.0-r1[ocaml] )"
	# configparser-3.2 breaks the build (3.3 or none at all are fine)
	DEPEND="${COMMON_DEPEND}
	dev-lang/perl
	>=sys-devel/make-3.81
	>=sys-devel/flex-2.5.4
	>=sys-devel/bison-1.875d
	\|\| ( >=sys-devel/gcc-3.0 >=sys-devel/llvm-3.5
	( >=sys-freebsd/freebsd-lib-9.1-r10 sys-libs/libcxx )
	)
	\|\| ( >=sys-devel/binutils-2.18 >=sys-devel/binutils-apple-5.1 )
	kernel_Darwin? ( <sys-libs/libcxx-${PV%_rc*}.9999 )
	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? ( dev-ml/findlib
	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
	~sys-devel/clang-runtime-${PV}
	)
	default-libcxx? ( sys-libs/libcxx )
	kernel_Darwin? ( =sys-libs/libcxx-${PV%.} )"

	# 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 )
	\|\| ( ${ALL_LLVM_TARGETS[*]} )
	multitarget? ( ${ALL_LLVM_TARGETS[*]} )"

	S=${WORKDIR}/${P/_}.src

	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
	}

	pkg_setup() {
	pkg_pretend
	}

	src_unpack() {
	default

	if use clang; then
	mv "${WORKDIR}"/cfe-${PV/_}.src "${S}"/tools/clang \
	\|\| die "clang source directory move failed"
	mv "${WORKDIR}"/compiler-rt-${PV/_}.src "${S}"/projects/compiler-rt \
	\|\| die "compiler-rt source directory move failed"
	mv "${WORKDIR}"/clang-tools-extra-${PV/_}.src "${S}"/tools/clang/tools/extra \
	\|\| die "clang-tools-extra source directory move failed"
	fi

	if use lldb; then
	mv "${WORKDIR}"/lldb-${PV/_}.src "${S}"/tools/lldb \
	\|\| die "lldb source directory move failed"
	fi
	}

	src_prepare() {
	python_setup

	# Fix libdir for ocaml bindings install, bug #559134
	eapply "${FILESDIR}"/3.9.0/0001-cmake-Install-OCaml-modules-into-correct-package-loc.patch
	# Do not build/install ocaml docs with USE=-doc, bug #562008
	eapply "${FILESDIR}"/3.9.0/0002-cmake-Make-OCaml-docs-dependent-on-LLVM_BUILD_DOCS.patch

	# Make it possible to override Sphinx HTML install dirs
	# https://llvm.org/bugs/show_bug.cgi?id=23780
	eapply "${FILESDIR}"/3.9.0/0003-cmake-Support-overriding-Sphinx-HTML-doc-install-dir.patch

	# Prevent race conditions with parallel Sphinx runs
	# https://llvm.org/bugs/show_bug.cgi?id=23781
	eapply "${FILESDIR}"/9999/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch

	# Allow custom cmake build types (like 'Gentoo')
	eapply "${FILESDIR}"/9999/0006-cmake-Remove-the-CMAKE_BUILD_TYPE-assertion.patch

	# Fix llvm-config for shared linking and sane flags
	# https://bugs.gentoo.org/show_bug.cgi?id=565358
	eapply "${FILESDIR}"/3.9.0/llvm-config-r1.patch

	# Restore SOVERSIONs for shared libraries
	# https://bugs.gentoo.org/show_bug.cgi?id=578392
	eapply "${FILESDIR}"/9999/0008-cmake-Restore-SOVERSIONs-on-shared-libraries.patch

	# support building llvm against musl-libc
	use elibc_musl && eapply "${FILESDIR}"/9999/musl-fixes.patch

	# disable use of SDK on OSX, bug #568758
	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py \|\| die

	# Workaround, can be compiled with gcc on Gentoo/FreeBSD, bug #578064
	use kernel_FreeBSD && tc-is-gcc && append-cppflags "-D_GLIBCXX_USE_C99"

	if use clang; then
	# Automatically select active system GCC's libraries, bugs #406163 and #417913
	eapply "${FILESDIR}"/3.9.0/clang/gentoo-runtime-gcc-detection-v3.patch

	eapply "${FILESDIR}"/3.9.0/clang/darwin_prefix-include-paths.patch
	eprefixify tools/clang/lib/Frontend/InitHeaderSearch.cpp

	eapply "${FILESDIR}"/3.8.1/compiler-rt/darwin-default-sysroot.patch

	pushd "${S}"/tools/clang >/dev/null \|\| die
	# be able to specify default values for -stdlib and -rtlib at build time
	eapply "${FILESDIR}"/3.9.0/clang/default-libs.patch
	popd >/dev/null \|\| die

	sed -i -e "s^@EPREFIX@^${EPREFIX}^" \
	tools/clang/tools/scan-build/bin/scan-build \|\| die

	# Install clang runtime into /usr/lib/clang
	# https://llvm.org/bugs/show_bug.cgi?id=23792
	eapply "${FILESDIR}"/3.9.0/clang/0001-Install-clang-runtime-into-usr-lib-without-suffix.patch
	eapply "${FILESDIR}"/3.9.0/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
	eapply "${FILESDIR}"/3.9.0/clang/0002-cmake-Make-CLANG_LIBDIR_SUFFIX-overridable.patch

	# Fix git-clang-format shebang, bug #562688
	python_fix_shebang tools/clang/tools/clang-format/git-clang-format

	pushd projects/compiler-rt >/dev/null \|\| die

	# Fix WX sections, bug #421527
	find 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

	popd >/dev/null \|\| 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
	# Do not install bundled six module
	eapply "${FILESDIR}"/3.9.0/lldb/six.patch
	fi

	# User patches
	eapply_user

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

	multilib_src_configure() {
	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=$(get_libdir)
	local mycmakeargs=(
	-DLLVM_LIBDIR_SUFFIX=${libdir#lib}

	-DBUILD_SHARED_LIBS=ON
	-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
	-DLLVM_BUILD_TESTS=$(usex test)

	-DLLVM_ENABLE_FFI=$(usex libffi)
	-DLLVM_ENABLE_TERMINFO=$(usex ncurses)
	-DLLVM_ENABLE_ASSERTIONS=$(usex debug)
	-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}"

	-DHAVE_HISTEDIT_H=$(usex libedit)
	)

	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

	# override default stdlib and rtlib
	-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
	-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")

	# compiler-rt's test cases depend on sanitizer
	-DCOMPILER_RT_BUILD_SANITIZERS=$(usex sanitize)
	-DCOMPILER_RT_INCLUDE_TESTS=$(usex sanitize)
	)
	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

	if tc-is-cross-compiler; then
	[[ -x "/usr/bin/llvm-tblgen" ]] \
	\|\| die "/usr/bin/llvm-tblgen not found or usable"
	mycmakeargs+=(
	-DCMAKE_CROSSCOMPILING=ON
	-DLLVM_TABLEGEN=/usr/bin/llvm-tblgen
	)

	if use clang; then
	[[ -x "/usr/bin/clang-tblgen" ]] \
	\|\| die "/usr/bin/clang-tblgen not found or usable"
	mycmakeargs+=(
	-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
	)
	fi
	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
	MULTILIB_WRAPPED_HEADERS+=(
	/usr/include/clang/Config/config.h
	)
	fi

	multilib-minimal_src_install

	if use clang; then
	# Apply CHOST and version suffix to clang tools
	local clang_version=${PV%.*}
	local clang_tools=( clang clang++ clang-cl clang-cpp )
	local abi i

	# cmake gives us:
	# - clang-X.Y
	# - clang -> clang-X.Y
	# - clang++, clang-cl, clang-cpp -> clang
	# we want to have:
	# - clang-X.Y
	# - clang++-X.Y, clang-cl-X.Y, clang-cpp-X.Y -> clang-X.Y
	# - clang, clang++, clang-cl, clang-cpp -> clang*-X.Y
	# also in CHOST variant
	for i in "${clang_tools[@]:1}"; do
	rm -f "${ED%/}/usr/bin/${i}" \|\| die
	dosym "clang-${clang_version}" "/usr/bin/${i}-${clang_version}"
	dosym "${i}-${clang_version}" "/usr/bin/${i}"
	done

	# now create target symlinks for all supported ABIs
	for abi in $(get_all_abis); do
	local abi_chost=$(get_abi_CHOST "${abi}")
	for i in "${clang_tools[@]}"; do
	dosym "${i}-${clang_version}" \
	"/usr/bin/${abi_chost}-${i}-${clang_version}"
	dosym "${abi_chost}-${i}-${clang_version}" \
	"/usr/bin/${abi_chost}-${i}"
	done
	done
	fi

	# Remove unnecessary headers on FreeBSD, bug #417171
	if use kernel_FreeBSD && use clang; then
	rm "${ED}"usr/lib/clang/${PV}/include/{std,float,iso,limits,tgmath,varargs}*.h \|\| die
	fi
	}

	multilib_src_install() {
	cmake-utils_src_install

	if multilib_is_native_abi; then
	# 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
	}

	multilib_src_install_all() {
	insinto /usr/share/vim/vimfiles
	doins -r utils/vim/*/.
	# some users may find it useful
	dodoc utils/vim/vimrc

	# Install man pages from the prebuilt package
	if ! use doc; then
	if ! use clang; then
	rm "${WORKDIR}"/${PN}-3.9.0_rc3-manpages/{clang,extraclangtools,scan-build}.1 \|\| die
	fi

	doman "${WORKDIR}"/${PN}-3.9.0_rc3-manpages/*.1
	fi

	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
	}