sys-devel/llvm: Remove unnecessary revbump due to FreeBSD-related change

The FreeBSD header change does not justify forcing rebuild of such
a huge package as LLVM on Linux. Furthermore, the new code relies on
a new USE flag, so FreeBSD users will get it via --changed-use.

2 files changed, 6 insertions, 551 deletions

diff --git a/sys-devel/llvm/llvm-3.7.1-r1.ebuild b/sys-devel/llvm/llvm-3.7.1-r1.ebuild
deleted file mode 100644
index 97e8e201b95f..000000000000
--- a/sys-devel/llvm/llvm-3.7.1-r1.ebuild
+++ /dev/null
@@ -1,549 +0,0 @@
-# Copyright 1999-2015 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Id$
-
-EAPI=5
-
-: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
-PYTHON_COMPAT=( python2_7 )
-
-inherit check-reqs cmake-utils eutils flag-o-matic multilib \
-	multilib-minimal python-single-r1 toolchain-funcs pax-utils prefix
-
-DESCRIPTION="Low Level Virtual Machine"
-HOMEPAGE="http://llvm.org/"
-SRC_URI="http://llvm.org/releases/${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-${PV}.src.tar.xz )
-	!doc? ( http://dev.gentoo.org/~voyageur/distfiles/${PN}-3.7.0-manpages.tar.bz2 )"
-
-LICENSE="UoI-NCSA"
-SLOT="0/${PV}"
-KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~x64-freebsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos"
-IUSE="clang debug doc gold libedit +libffi lldb multitarget ncurses ocaml
-	python +static-analyzer test xml video_cards_radeon
-	kernel_Darwin kernel_FreeBSD"
-
-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}] )
-	ncurses? ( >=sys-libs/ncurses-5.9-r3:0=[${MULTILIB_USEDEP}] )
-	ocaml? (
-		>=dev-lang/ocaml-4.00.0:0=
-		dev-ml/findlib
-		dev-ml/ocaml-ctypes
-		!!<=sys-devel/llvm-3.7.0-r1[ocaml] )"
-# configparser-3.2 breaks the build (3.3 or none at all are fine)
-DEPEND="${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 )
-	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="${PYTHON_REQUIRED_USE}
-	lldb? ( clang xml )"
-
-S=${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
-
-	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 ${?}
-	fi
-}
-
-pkg_setup() {
-	pkg_pretend
-}
-
-src_unpack() {
-	default
-
-	if use clang; then
-		mv "${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 "${S}"/tools/lldb \
-			|| die "lldb source directory move failed"
-	fi
-}
-
-src_prepare() {
-	# Make ocaml warnings non-fatal, bug #537308
-	sed -e "/RUN/s/-warn-error A//" -i test/Bindings/OCaml/*ml  || die
-	# Fix libdir for ocaml bindings install, bug #559134
-	epatch "${FILESDIR}"/cmake/${PN}-3.7.0-ocaml-multilib.patch
-	# Do not build/install ocaml docs with USE=-doc, bug #562008
-	epatch "${FILESDIR}"/cmake/${PN}-3.7.0-ocaml-build_doc.patch
-
-	# Make it possible to override Sphinx HTML install dirs
-	# https://llvm.org/bugs/show_bug.cgi?id=23780
-	epatch "${FILESDIR}"/cmake/0002-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
-	epatch "${FILESDIR}"/cmake/0003-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
-
-	# Prevent installing libgtest
-	# https://llvm.org/bugs/show_bug.cgi?id=18341
-	epatch "${FILESDIR}"/cmake/0004-cmake-Do-not-install-libgtest.patch
-
-	# Fix llvm-config for shared linking and sane flags
-	# https://bugs.gentoo.org/show_bug.cgi?id=565358
-	epatch "${FILESDIR}"/llvm-3.7-llvm-config.patch
-
-	# Fix msan with newer kernels, #569894
-	epatch "${FILESDIR}"/llvm-3.7-msan-fix.patch
-
-	# disable use of SDK on OSX, bug #568758
-	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die
-
-	if use clang; then
-		# Automatically select active system GCC's libraries, bugs #406163 and #417913
-		epatch "${FILESDIR}"/clang-3.5-gentoo-runtime-gcc-detection-v3.patch
-
-		epatch "${FILESDIR}"/clang-3.6-gentoo-install.patch
-
-		epatch "${FILESDIR}"/clang-3.4-darwin_prefix-include-paths.patch
-		eprefixify tools/clang/lib/Frontend/InitHeaderSearch.cpp
-
-		sed -i -e "s^@EPREFIX@^${EPREFIX}^" \
-			tools/clang/tools/scan-build/scan-build || die
-
-		# Install clang runtime into /usr/lib/clang
-		# https://llvm.org/bugs/show_bug.cgi?id=23792
-		epatch "${FILESDIR}"/cmake/clang-0001-Install-clang-runtime-into-usr-lib-without-suffix.patch
-		epatch "${FILESDIR}"/cmake/compiler-rt-0001-cmake-Install-compiler-rt-into-usr-lib-without-suffi.patch
-
-		# Do not force -march flags on arm platforms
-		# https://bugs.gentoo.org/show_bug.cgi?id=562706
-		epatch "${FILESDIR}"/cmake/${PN}-3.7.0-compiler_rt_arm_march_flags.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 "${FILESDIR}"/cmake/clang-0002-cmake-Make-CLANG_LIBDIR_SUFFIX-overridable.patch
-
-		pushd projects/compiler-rt >/dev/null || die
-
-		# Fix msan with newer kernels, compiler-rt part, #569894
-		epatch "${FILESDIR}"/compiler-rt-3.7-msan-fix.patch
-
-		# Fix WX sections, bug #421527
-		find lib/builtins -type f -name '*.S' -exec sed \
-			 -e '$a\\n#if defined(__linux__) && defined(__ELF__)\n.section .note.GNU-stack,"",%progbits\n#endif' \
-			 -i {} + || die
-
-		popd >/dev/null || die
-	fi
-
-	if use lldb; then
-		# Do not install dummy readline.so module from
-		# https://llvm.org/bugs/show_bug.cgi?id=18841
-		sed -e 's/add_subdirectory(readline)/#&/' \
-			-i tools/lldb/scripts/Python/modules/CMakeLists.txt || die
-
-		# Fix Python paths, bugs #562436 and #562438
-		epatch "${FILESDIR}"/${PN}-3.7-lldb_python.patch
-		sed -e "s/GENTOO_LIBDIR/$(get_libdir)/" \
-			-i tools/lldb/scripts/Python/finishSwigPythonLLDB.py || die
-
-		# Fix build with ncurses[tinfo], #560474
-		# http://llvm.org/viewvc/llvm-project?view=revision&revision=247842
-		epatch "${FILESDIR}"/cmake/${PN}-3.7.0-lldb_tinfo.patch
-	fi
-
-	# User patches
-	epatch_user
-
-	python_setup
-
-	# Native libdir is used to hold LLVMgold.so
-	NATIVE_LIBDIR=$(get_libdir)
-}
-
-multilib_src_configure() {
-	local targets
-	if use multitarget; then
-		targets=all
-	else
-		targets='host;BPF;CppBackend'
-		use video_cards_radeon && targets+=';AMDGPU'
-	fi
-
-	local ffi_cflags ffi_ldflags
-	if use libffi; then
-		ffi_cflags=$(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}
-
-		-DBUILD_SHARED_LIBS=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=$(usex debug)
-		-DLLVM_ENABLE_EH=ON
-		-DLLVM_ENABLE_RTTI=ON
-
-		-DWITH_POLLY=OFF # TODO
-
-		-DLLVM_HOST_TRIPLE="${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
-		)
-	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 "${test_targets[@]}"
-}
-
-src_install() {
-	local MULTILIB_CHOST_TOOLS=(
-		/usr/bin/llvm-config
-	)
-
-	local MULTILIB_WRAPPED_HEADERS=(
-		/usr/include/llvm/Config/config.h
-		/usr/include/llvm/Config/llvm-config.h
-	)
-
-	if use clang; then
-		# note: magic applied in multilib_src_install()!
-		CLANG_VERSION=${PV%.*}
-
-		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-${CLANG_VERSION}
-		)
-
-		MULTILIB_WRAPPED_HEADERS+=(
-			/usr/include/clang/Config/config.h
-		)
-	fi
-
-	multilib-minimal_src_install
-
-	# Remove unnecessary headers on FreeBSD, bug #417171
-	use kernel_FreeBSD && use clang && rm "${ED}"usr/lib/clang/${PV}/include/{std,float,iso,limits,tgmath,varargs}*.h
-}
-
-multilib_src_install() {
-	cmake-utils_src_install
-
-	if multilib_is_native_abi; then
-		# Install man pages.
-		use doc || doman "${WORKDIR}"/${PN}-3.7.0-manpages/*.1
-
-		# Symlink the gold plugin.
-		if use gold; then
-			dodir "/usr/${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
-}
-
-multilib_src_install_all() {
-	insinto /usr/share/vim/vimfiles
-	doins -r utils/vim/*/.
-	# some users may find it useful
-	dodoc utils/vim/vimrc
-
-	if use clang; then
-		pushd tools/clang >/dev/null || die
-
-		if use static-analyzer ; then
-			pushd tools/scan-build >/dev/null || die
-
-			dobin ccc-analyzer scan-build
-			dosym ccc-analyzer /usr/bin/c++-analyzer
-			doman scan-build.1
-
-			insinto /usr/share/llvm
-			doins scanview.css sorttable.js
-
-			popd >/dev/null || die
-		fi
-
-		if use static-analyzer ; then
-			pushd tools/scan-view >/dev/null || die
-
-			python_doscript scan-view
-
-			touch __init__.py || die
-			python_moduleinto clang
-			python_domodule *.py Resources
-
-			popd >/dev/null || die
-		fi
-
-		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 lldb && use python; then
-			python_optimize
-		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
-}
diff --git a/sys-devel/llvm/llvm-3.7.1.ebuild b/sys-devel/llvm/llvm-3.7.1.ebuild
index e4697d0e7917..2dbd2e5e16fa 100644
--- a/sys-devel/llvm/llvm-3.7.1.ebuild
+++ b/sys-devel/llvm/llvm-3.7.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2016 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$
 
@@ -23,7 +23,8 @@ LICENSE="UoI-NCSA"
 SLOT="0/${PV}"
 KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~x64-freebsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos"
 IUSE="clang debug doc gold libedit +libffi lldb multitarget ncurses ocaml
-	python +static-analyzer test xml video_cards_radeon kernel_Darwin"
+	python +static-analyzer test xml video_cards_radeon
+	kernel_Darwin kernel_FreeBSD"
 
 COMMON_DEPEND="
 	sys-libs/zlib:0=
@@ -430,6 +431,9 @@ src_install() {
 	fi
 
 	multilib-minimal_src_install
+
+	# Remove unnecessary headers on FreeBSD, bug #417171
+	use kernel_FreeBSD && use clang && rm "${ED}"usr/lib/clang/${PV}/include/{std,float,iso,limits,tgmath,varargs}*.h
 }
 
 multilib_src_install() {