dev-lang/python/python-3.8.19_p1.ebuild - third_party/overlays/chromiumos-overlay - Git at Google

 # Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2

 EAPI="7"
 WANT_LIBTOOL="none"

 inherit autotools flag-o-matic multiprocessing pax-utils \
 	python-utils-r1 toolchain-funcs verify-sig

 MY_PV=${PV/_rc/rc}
 MY_P="Python-${MY_PV%_p*}"
 PYVER=$(ver_cut 1-2)
 PATCHSET="python-gentoo-patches-${MY_PV}"

 DESCRIPTION="An interpreted, interactive, object-oriented programming language"
 HOMEPAGE="https://www.python.org/"
 SRC_URI="https://www.python.org/ftp/python/${PV%_*}/${MY_P}.tar.xz
 	https://dev.gentoo.org/~mgorny/dist/python/${PATCHSET}.tar.xz
 	verify-sig? (
 		https://www.python.org/ftp/python/${PV%_*}/${MY_P}.tar.xz.asc
 	)
 "
 S="${WORKDIR}/${MY_P}"

 LICENSE="PSF-2"
 SLOT="${PYVER}"
 KEYWORDS="*"
 IUSE="bluetooth build examples gdbm hardened +ncurses +readline +sqlite +ssl test tk wininst +xml"
 RESTRICT="!test? ( test )"

 # Do not add a dependency on dev-lang/python to this ebuild.
 # If you need to apply a patch which requires python for bootstrapping, please
 # run the bootstrap code on your dev box and include the results in the
 # patchset. See bug 447752.

 RDEPEND="
 	app-arch/bzip2:=
 	app-arch/xz-utils:=
 	dev-lang/python-exec[python_targets_python3_8(-)]
 	dev-libs/libffi:=
 	sys-apps/util-linux:=
 	>=sys-libs/zlib-1.1.3:=
 	virtual/libcrypt:=
 	virtual/libintl
 	gdbm? ( sys-libs/gdbm:=[berkdb] )
 	ncurses? ( >=sys-libs/ncurses-5.2:= )
 	readline? ( >=sys-libs/readline-4.1:= )
 	sqlite? ( >=dev-db/sqlite-3.3.8:3= )
 	ssl? ( >=dev-libs/openssl-1.1.1:= )
 	tk? (
 		>=dev-lang/tcl-8.0:=
 		>=dev-lang/tk-8.0:=
 		dev-tcltk/blt:=
 		dev-tcltk/tix
 	)
 	xml? ( >=dev-libs/expat-2.1:= )
 "
 # bluetooth requires headers from bluez
 DEPEND="
 	${RDEPEND}
 	bluetooth? ( net-wireless/bluez )
 	test? ( app-arch/xz-utils[extra-filters(+)] )
 "
 BDEPEND="
 	sys-devel/autoconf-archive
 	virtual/awk
 	virtual/pkgconfig
 	verify-sig? ( sec-keys/openpgp-keys-python )
 	!sys-devel/gcc[libffi(-)]
 "
 RDEPEND+="
 	build? ( app-misc/mime-types )
 "

 VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/python.org.asc

 src_unpack() {
 	if use verify-sig; then
 		verify-sig_verify_detached "${DISTDIR}"/${MY_P}.tar.xz{,.asc}
 	fi
 	default
 }

 # Google-specific PGO bits
 #
 # NOTE: If you're looking here because python-*-profile.tar.xz is missing:
 # - thanks for upgrading Python!
 # - files/python3_gen_pgo.sh should be able to generate a PGO profile for you.
 # - only new minor versions of Python should require a new PGO profile.
 #
 # Generally, PGO profile generation should be done as one of the last steps of
 # a Python upgrade, so feel free to turn pgo_use off as a default until things
 # are pretty finalized.
 #SRC_URI+=" pgo_use? ( gs://chromeos-localmirror/distfiles/python-$(ver_cut 1-2)-profile.tar.xz )"
 IUSE+=" pgo_generate -pgo_use"
 REQUIRED_USE+=" pgo_generate? ( !pgo_use )"

 src_prepare() {
 	# Ensure that internal copies of expat, libffi and zlib are not used.
 	rm -fr Modules/expat || die
 	rm -fr Modules/_ctypes/libffi* || die
 	rm -fr Modules/zlib || die

 	local PATCHES=(
 		"${WORKDIR}/${PATCHSET}"
 	)

 	default

 	# START: Chromium OS
 	if tc-is-cross-compiler ; then
 		eapply "${FILESDIR}/python-3.8-cross-h2py.patch"
 		eapply "${FILESDIR}/python-3.6.5-cross-hack-compiler.patch"
 	fi
 	eapply "${FILESDIR}/python-3.8-cross-python-config.patch"
 	eapply "${FILESDIR}/python-3.8-cross-setup-sysroot.patch"
 	eapply "${FILESDIR}/python-3.8-cross-distutils.patch"
 	eapply "${FILESDIR}/python-3.8-cross-sysconfig.patch"
 	eapply "${FILESDIR}/python-3.6.5-ldshared.patch"
 	eapply "${FILESDIR}/python-3.8-system-libffi.patch"
 	eapply "${FILESDIR}/python-3.8-CVE-2024-6232.patch"
 	eapply "${FILESDIR}/python-3.8-CVE-2024-7592.patch"
 	eapply "${FILESDIR}/python-3.8-CVE-2023-27043.patch"

 	if use pgo_use; then
 		eapply "${FILESDIR}/python-3.6.12-pgo-use.patch"
 		cp "${WORKDIR}/code.profclangd" "${S}" || die
 	elif use pgo_generate; then
 		eapply "${FILESDIR}/python-3.6.12-pgo-generate.patch"
 	fi

 	# Support searching /usr/local for Python on dev/test images.
 	sed -i -e "s:sys.exec_prefix]:sys.exec_prefix, '/usr/local']:g" \
 		Lib/site.py || die "sed failed to add /usr/local to prefixes"

 	# Speed up the build and workaround b/240951449 by removing self tests.
 	if ! use test ; then
 		local args=( -type f -iname 'test_*.py' )

 		# The ebuild removes these and will fail if they are missing.
 		if ! use sqlite ; then
 			args+=( ! -iname 'test_sqlite*.py' )
 		fi
 		if ! use tk ; then
 			args+=( ! -iname 'test_tk*.py' )
 		fi

 		find "${S}/Lib/" "${args[@]}" -delete || die
 	fi
 	# END: Chromium OS

 	sed -i -e "s:@@GENTOO_LIBDIR@@:$(get_libdir):g" \
 		setup.py || die "sed failed to replace @@GENTOO_LIBDIR@@"

 	# force correct number of jobs
 	# https://bugs.gentoo.org/737660
 	local jobs=$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")
 	sed -i -e "s:-j0:-j${jobs}:" Makefile.pre.in || die
 	sed -i -e "/self\.parallel/s:True:${jobs}:" setup.py || die

 	eautoreconf
 }

 src_configure() {
 	local disable
 	# disable automagic bluetooth headers detection
 	use bluetooth || export ac_cv_header_bluetooth_bluetooth_h=no
 	use gdbm      || disable+=" gdbm"
 	use ncurses   || disable+=" _curses _curses_panel"
 	use readline  || disable+=" readline"
 	use sqlite    || disable+=" _sqlite3"
 	use ssl       || export PYTHON_DISABLE_SSL="1"
 	use tk        || disable+=" _tkinter"
 	use xml       || disable+=" _elementtree pyexpat" # _elementtree uses pyexpat.
 	export PYTHON_DISABLE_MODULES="${disable}"

 	if ! use xml; then
 		ewarn "You have configured Python without XML support."
 		ewarn "This is NOT a recommended configuration as you"
 		ewarn "may face problems parsing any XML documents."
 	fi

 	if [[ -n "${PYTHON_DISABLE_MODULES}" ]]; then
 		einfo "Disabled modules: ${PYTHON_DISABLE_MODULES}"
 	fi

 	if [[ "$(gcc-major-version)" -ge 4 ]]; then
 		append-flags -fwrapv
 	fi

 	filter-flags -malign-double

 	# https://bugs.gentoo.org/show_bug.cgi?id=50309
 	if is-flagq -O3; then
 		is-flagq -fstack-protector-all && replace-flags -O3 -O2
 		use hardened && replace-flags -O3 -O2
 	fi

 	# https://bugs.gentoo.org/700012
 	if is-flagq -flto || is-flagq '-flto=*'; then
 		append-cflags $(test-flags-CC -ffat-lto-objects)
 	fi

 	# Export CXX so it ends up in /usr/lib/python3.X/config/Makefile.
 	tc-export CXX

 	tc-export CC

 	# Fix implicit declarations on cross and prefix builds. Bug #674070.
 	use ncurses && append-cppflags -I"${ESYSROOT}"/usr/include/ncursesw

 	local dbmliborder
 	if use gdbm; then
 		dbmliborder+="${dbmliborder:+:}gdbm"
 	fi

 	local myeconfargs=(
 		# glibc-2.30 removes it; since we can't cleanly force-rebuild
 		# Python on glibc upgrade, remove it proactively to give
 		# a chance for users rebuilding python before glibc
 		ac_cv_header_stropts_h=no

 		--enable-shared
 		--enable-ipv6
 		--infodir='${prefix}/share/info'
 		--mandir='${prefix}/share/man'
 		--with-computed-gotos
 		--with-dbmliborder="${dbmliborder}"
 		--with-libc=
 		--enable-loadable-sqlite-extensions
 		--without-ensurepip
 		--with-system-expat
 		--with-system-ffi
 	)

 	if use pgo_generate || use pgo_use; then
 		myeconfargs+=(
 			"LLVM_PROFDATA=$(which llvm-profdata)"
 			--enable-optimizations
 		)
 	fi

 	# disable implicit optimization/debugging flags
 	local -x OPT=
 	# pass system CFLAGS & LDFLAGS as _NODIST, otherwise they'll get
 	# propagated to sysconfig for built extensions
 	local -x CFLAGS_NODIST=${CFLAGS}
 	local -x LDFLAGS_NODIST=${LDFLAGS}
 	local -x CFLAGS= LDFLAGS=

 	econf "${myeconfargs[@]}"

 	if grep -q "#define POSIX_SEMAPHORES_NOT_ENABLED 1" pyconfig.h; then
 		eerror "configure has detected that the sem_open function is broken."
 		eerror "Please ensure that /dev/shm is mounted as a tmpfs with mode 1777."
 		die "Broken sem_open function (bug 496328)"
 	fi
 }

 src_compile() {
 	# Ensure sed works as expected
 	# https://bugs.gentoo.org/594768
 	local -x LC_ALL=C
 	# Prevent using distutils bundled by setuptools.
 	# https://bugs.gentoo.org/823728
 	export SETUPTOOLS_USE_DISTUTILS=stdlib

 	# also need to clear the flags explicitly here or they end up
 	# in _sysconfigdata*
 	emake CPPFLAGS= CFLAGS= LDFLAGS=

 	# Work around bug 329499. See also bug 413751 and 457194.
 	if has_version dev-libs/libffi[pax-kernel]; then
 		pax-mark E python
 	else
 		pax-mark m python
 	fi
 }

 src_test() {
 	# Tests will not work when cross compiling.
 	if tc-is-cross-compiler; then
 		elog "Disabling tests due to crosscompiling."
 		return
 	fi

 	# Skip failing tests.
 	local skipped_tests="gdb"

 	if use sparc ; then
 		# bug #788022
 		skipped_tests+=" multiprocessing_fork"
 		skipped_tests+=" multiprocessing_forkserver"
 	fi

 	for test in ${skipped_tests}; do
 		mv "${S}"/Lib/test/test_${test}.py "${T}"
 	done

 	# bug 660358
 	local -x COLUMNS=80
 	local -x PYTHONDONTWRITEBYTECODE=

 	local jobs=$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")

 	emake test EXTRATESTOPTS="-u-network -j${jobs}" \
 		CPPFLAGS= CFLAGS= LDFLAGS= < /dev/tty
 	local result=$?

 	for test in ${skipped_tests}; do
 		mv "${T}/test_${test}.py" "${S}"/Lib/test
 	done

 	elog "The following tests have been skipped:"
 	for test in ${skipped_tests}; do
 		elog "test_${test}.py"
 	done

 	elog "If you would like to run them, you may:"
 	elog "cd '${EPREFIX}/usr/lib/python${PYVER}/test'"
 	elog "and run the tests separately."

 	if [[ ${result} -ne 0 ]]; then
 		die "emake test failed"
 	fi
 }

 src_install() {
 	local libdir=${ED}/usr/lib/python${PYVER}

 	emake DESTDIR="${D}" altinstall

 	# Remove static library
 	rm "${ED}"/usr/$(get_libdir)/libpython*.a || die

 	# Fix collisions between different slots of Python.
 	rm "${ED}/usr/$(get_libdir)/libpython3.so" || die

 	# Cheap hack to get version with ABIFLAGS
 	local abiver=$(cd "${ED}/usr/include"; echo python*)
 	if [[ ${abiver} != python${PYVER} ]]; then
 		# Replace python3.X with a symlink to python3.Xm
 		rm "${ED}/usr/bin/python${PYVER}" || die
 		dosym "${abiver}" "/usr/bin/python${PYVER}"
 		# Create python3.X-config symlink
 		dosym "${abiver}-config" "/usr/bin/python${PYVER}-config"
 		# Create python-3.5m.pc symlink
 		dosym "python-${PYVER}.pc" "/usr/$(get_libdir)/pkgconfig/${abiver/${PYVER}/-${PYVER}}.pc"
 	fi

 	# python seems to get rebuilt in src_install (bug 569908)
 	# Work around it for now.
 	if has_version dev-libs/libffi[pax-kernel]; then
 		pax-mark E "${ED}/usr/bin/${abiver}"
 	else
 		pax-mark m "${ED}/usr/bin/${abiver}"
 	fi

 	use sqlite || rm -r "${libdir}/"{sqlite3,test/test_sqlite*} || die
 	use tk || rm -r "${ED}/usr/bin/idle${PYVER}" "${libdir}/"{idlelib,tkinter,test/test_tk*} || die

 	use wininst || rm "${libdir}/distutils/command/"wininst-*.exe || die

 	dodoc Misc/{ACKS,HISTORY,NEWS}

 	if use examples; then
 		docinto examples
 		find Tools -name __pycache__ -exec rm -fr {} + || die
 		dodoc -r Tools
 	fi
 	insinto /usr/share/gdb/auto-load/usr/$(get_libdir) #443510
 	local libname=$(printf 'e:\n\t@echo $(INSTSONAME)\ninclude Makefile\n' | \
 		emake --no-print-directory -s -f - 2>/dev/null)
 	newins "${S}"/Tools/gdb/libpython.py "${libname}"-gdb.py

 	newconfd "${FILESDIR}/pydoc.conf" pydoc-${PYVER}
 	newinitd "${FILESDIR}/pydoc.init" pydoc-${PYVER}
 	sed \
 		-e "s:@PYDOC_PORT_VARIABLE@:PYDOC${PYVER/./_}_PORT:" \
 		-e "s:@PYDOC@:pydoc${PYVER}:" \
 		-i "${ED}/etc/conf.d/pydoc-${PYVER}" \
 		"${ED}/etc/init.d/pydoc-${PYVER}" || die "sed failed"

 	local -x EPYTHON=python${PYVER}
 	# if not using a cross-compiler, use the fresh binary
 	if ! tc-is-cross-compiler; then
 		local -x PYTHON=./python
 		local -x LD_LIBRARY_PATH=${LD_LIBRARY_PATH+${LD_LIBRARY_PATH}:}${PWD}
 	else
 		local -x PYTHON=${EPREFIX}/usr/bin/${EPYTHON}
 	fi

 	echo "EPYTHON='${EPYTHON}'" > epython.py || die
 	python_domodule epython.py

 	# python-exec wrapping support
 	local pymajor=${PYVER%.*}
 	local scriptdir=${D}$(python_get_scriptdir)
 	mkdir -p "${scriptdir}" || die
 	# python and pythonX
 	ln -s "../../../bin/${abiver}" \
 		"${scriptdir}/python${pymajor}" || die
 	ln -s "python${pymajor}" "${scriptdir}/python" || die
 	# python-config and pythonX-config
 	# note: we need to create a wrapper rather than symlinking it due
 	# to some random dirname(argv[0]) magic performed by python-config
 	cat > "${scriptdir}/python${pymajor}-config" <<-EOF || die
 		#!/bin/sh
 		exec "${abiver}-config" "\${@}"
 	EOF
 	chmod +x "${scriptdir}/python${pymajor}-config" || die
 	ln -s "python${pymajor}-config" \
 		"${scriptdir}/python-config" || die
 	# 2to3, pydoc
 	ln -s "../../../bin/2to3-${PYVER}" \
 		"${scriptdir}/2to3" || die
 	ln -s "../../../bin/pydoc${PYVER}" \
 		"${scriptdir}/pydoc" || die
 	# idle
 	if use tk; then
 		ln -s "../../../bin/idle${PYVER}" \
 			"${scriptdir}/idle" || die
 	fi

 	# Delete unittests as they are a waste of space and are unused.
 	rm -rf "${libdir}/test" "${libdir}"/{ctypes,email,sqlite3,unittest}/test || die
 }
	# Copyright 1999-2022 Gentoo Authors
	# Distributed under the terms of the GNU General Public License v2

	EAPI="7"
	WANT_LIBTOOL="none"

	inherit autotools flag-o-matic multiprocessing pax-utils \
	python-utils-r1 toolchain-funcs verify-sig

	MY_PV=${PV/_rc/rc}
	MY_P="Python-${MY_PV%_p*}"
	PYVER=$(ver_cut 1-2)
	PATCHSET="python-gentoo-patches-${MY_PV}"

	DESCRIPTION="An interpreted, interactive, object-oriented programming language"
	HOMEPAGE="https://www.python.org/"
	SRC_URI="https://www.python.org/ftp/python/${PV%_*}/${MY_P}.tar.xz
	https://dev.gentoo.org/~mgorny/dist/python/${PATCHSET}.tar.xz
	verify-sig? (
	https://www.python.org/ftp/python/${PV%_*}/${MY_P}.tar.xz.asc
	)
	"
	S="${WORKDIR}/${MY_P}"

	LICENSE="PSF-2"
	SLOT="${PYVER}"
	KEYWORDS="*"
	IUSE="bluetooth build examples gdbm hardened +ncurses +readline +sqlite +ssl test tk wininst +xml"
	RESTRICT="!test? ( test )"

	# Do not add a dependency on dev-lang/python to this ebuild.
	# If you need to apply a patch which requires python for bootstrapping, please
	# run the bootstrap code on your dev box and include the results in the
	# patchset. See bug 447752.

	RDEPEND="
	app-arch/bzip2:=
	app-arch/xz-utils:=
	dev-lang/python-exec[python_targets_python3_8(-)]
	dev-libs/libffi:=
	sys-apps/util-linux:=
	>=sys-libs/zlib-1.1.3:=
	virtual/libcrypt:=
	virtual/libintl
	gdbm? ( sys-libs/gdbm:=[berkdb] )
	ncurses? ( >=sys-libs/ncurses-5.2:= )
	readline? ( >=sys-libs/readline-4.1:= )
	sqlite? ( >=dev-db/sqlite-3.3.8:3= )
	ssl? ( >=dev-libs/openssl-1.1.1:= )
	tk? (
	>=dev-lang/tcl-8.0:=
	>=dev-lang/tk-8.0:=
	dev-tcltk/blt:=
	dev-tcltk/tix
	)
	xml? ( >=dev-libs/expat-2.1:= )
	"
	# bluetooth requires headers from bluez
	DEPEND="
	${RDEPEND}
	bluetooth? ( net-wireless/bluez )
	test? ( app-arch/xz-utils[extra-filters(+)] )
	"
	BDEPEND="
	sys-devel/autoconf-archive
	virtual/awk
	virtual/pkgconfig
	verify-sig? ( sec-keys/openpgp-keys-python )
	!sys-devel/gcc[libffi(-)]
	"
	RDEPEND+="
	build? ( app-misc/mime-types )
	"

	VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/python.org.asc

	src_unpack() {
	if use verify-sig; then
	verify-sig_verify_detached "${DISTDIR}"/${MY_P}.tar.xz{,.asc}
	fi
	default
	}

	# Google-specific PGO bits
	#
	# NOTE: If you're looking here because python-*-profile.tar.xz is missing:
	# - thanks for upgrading Python!
	# - files/python3_gen_pgo.sh should be able to generate a PGO profile for you.
	# - only new minor versions of Python should require a new PGO profile.
	#
	# Generally, PGO profile generation should be done as one of the last steps of
	# a Python upgrade, so feel free to turn pgo_use off as a default until things
	# are pretty finalized.
	#SRC_URI+=" pgo_use? ( gs://chromeos-localmirror/distfiles/python-$(ver_cut 1-2)-profile.tar.xz )"
	IUSE+=" pgo_generate -pgo_use"
	REQUIRED_USE+=" pgo_generate? ( !pgo_use )"

	src_prepare() {
	# Ensure that internal copies of expat, libffi and zlib are not used.
	rm -fr Modules/expat \|\| die
	rm -fr Modules/_ctypes/libffi* \|\| die
	rm -fr Modules/zlib \|\| die

	local PATCHES=(
	"${WORKDIR}/${PATCHSET}"
	)

	default

	# START: Chromium OS
	if tc-is-cross-compiler ; then
	eapply "${FILESDIR}/python-3.8-cross-h2py.patch"
	eapply "${FILESDIR}/python-3.6.5-cross-hack-compiler.patch"
	fi
	eapply "${FILESDIR}/python-3.8-cross-python-config.patch"
	eapply "${FILESDIR}/python-3.8-cross-setup-sysroot.patch"
	eapply "${FILESDIR}/python-3.8-cross-distutils.patch"
	eapply "${FILESDIR}/python-3.8-cross-sysconfig.patch"
	eapply "${FILESDIR}/python-3.6.5-ldshared.patch"
	eapply "${FILESDIR}/python-3.8-system-libffi.patch"
	eapply "${FILESDIR}/python-3.8-CVE-2024-6232.patch"
	eapply "${FILESDIR}/python-3.8-CVE-2024-7592.patch"
	eapply "${FILESDIR}/python-3.8-CVE-2023-27043.patch"

	if use pgo_use; then
	eapply "${FILESDIR}/python-3.6.12-pgo-use.patch"
	cp "${WORKDIR}/code.profclangd" "${S}" \|\| die
	elif use pgo_generate; then
	eapply "${FILESDIR}/python-3.6.12-pgo-generate.patch"
	fi

	# Support searching /usr/local for Python on dev/test images.
	sed -i -e "s:sys.exec_prefix]:sys.exec_prefix, '/usr/local']:g" \
	Lib/site.py \|\| die "sed failed to add /usr/local to prefixes"

	# Speed up the build and workaround b/240951449 by removing self tests.
	if ! use test ; then
	local args=( -type f -iname 'test_*.py' )

	# The ebuild removes these and will fail if they are missing.
	if ! use sqlite ; then
	args+=( ! -iname 'test_sqlite*.py' )
	fi
	if ! use tk ; then
	args+=( ! -iname 'test_tk*.py' )
	fi

	find "${S}/Lib/" "${args[@]}" -delete \|\| die
	fi
	# END: Chromium OS

	sed -i -e "s:@@GENTOO_LIBDIR@@:$(get_libdir):g" \
	setup.py \|\| die "sed failed to replace @@GENTOO_LIBDIR@@"

	# force correct number of jobs
	# https://bugs.gentoo.org/737660
	local jobs=$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")
	sed -i -e "s:-j0:-j${jobs}:" Makefile.pre.in \|\| die
	sed -i -e "/self\.parallel/s:True:${jobs}:" setup.py \|\| die

	eautoreconf
	}

	src_configure() {
	local disable
	# disable automagic bluetooth headers detection
	use bluetooth \|\| export ac_cv_header_bluetooth_bluetooth_h=no
	use gdbm \|\| disable+=" gdbm"
	use ncurses \|\| disable+=" _curses _curses_panel"
	use readline \|\| disable+=" readline"
	use sqlite \|\| disable+=" _sqlite3"
	use ssl \|\| export PYTHON_DISABLE_SSL="1"
	use tk \|\| disable+=" _tkinter"
	use xml \|\| disable+=" _elementtree pyexpat" # _elementtree uses pyexpat.
	export PYTHON_DISABLE_MODULES="${disable}"

	if ! use xml; then
	ewarn "You have configured Python without XML support."
	ewarn "This is NOT a recommended configuration as you"
	ewarn "may face problems parsing any XML documents."
	fi

	if [[ -n "${PYTHON_DISABLE_MODULES}" ]]; then
	einfo "Disabled modules: ${PYTHON_DISABLE_MODULES}"
	fi

	if [[ "$(gcc-major-version)" -ge 4 ]]; then
	append-flags -fwrapv
	fi

	filter-flags -malign-double

	# https://bugs.gentoo.org/show_bug.cgi?id=50309
	if is-flagq -O3; then
	is-flagq -fstack-protector-all && replace-flags -O3 -O2
	use hardened && replace-flags -O3 -O2
	fi

	# https://bugs.gentoo.org/700012
	if is-flagq -flto \|\| is-flagq '-flto=*'; then
	append-cflags $(test-flags-CC -ffat-lto-objects)
	fi

	# Export CXX so it ends up in /usr/lib/python3.X/config/Makefile.
	tc-export CXX

	tc-export CC

	# Fix implicit declarations on cross and prefix builds. Bug #674070.
	use ncurses && append-cppflags -I"${ESYSROOT}"/usr/include/ncursesw

	local dbmliborder
	if use gdbm; then
	dbmliborder+="${dbmliborder:+:}gdbm"
	fi

	local myeconfargs=(
	# glibc-2.30 removes it; since we can't cleanly force-rebuild
	# Python on glibc upgrade, remove it proactively to give
	# a chance for users rebuilding python before glibc
	ac_cv_header_stropts_h=no

	--enable-shared
	--enable-ipv6
	--infodir='${prefix}/share/info'
	--mandir='${prefix}/share/man'
	--with-computed-gotos
	--with-dbmliborder="${dbmliborder}"
	--with-libc=
	--enable-loadable-sqlite-extensions
	--without-ensurepip
	--with-system-expat
	--with-system-ffi
	)

	if use pgo_generate \|\| use pgo_use; then
	myeconfargs+=(
	"LLVM_PROFDATA=$(which llvm-profdata)"
	--enable-optimizations
	)
	fi

	# disable implicit optimization/debugging flags
	local -x OPT=
	# pass system CFLAGS & LDFLAGS as _NODIST, otherwise they'll get
	# propagated to sysconfig for built extensions
	local -x CFLAGS_NODIST=${CFLAGS}
	local -x LDFLAGS_NODIST=${LDFLAGS}
	local -x CFLAGS= LDFLAGS=

	econf "${myeconfargs[@]}"

	if grep -q "#define POSIX_SEMAPHORES_NOT_ENABLED 1" pyconfig.h; then
	eerror "configure has detected that the sem_open function is broken."
	eerror "Please ensure that /dev/shm is mounted as a tmpfs with mode 1777."
	die "Broken sem_open function (bug 496328)"
	fi
	}

	src_compile() {
	# Ensure sed works as expected
	# https://bugs.gentoo.org/594768
	local -x LC_ALL=C
	# Prevent using distutils bundled by setuptools.
	# https://bugs.gentoo.org/823728
	export SETUPTOOLS_USE_DISTUTILS=stdlib

	# also need to clear the flags explicitly here or they end up
	# in _sysconfigdata*
	emake CPPFLAGS= CFLAGS= LDFLAGS=

	# Work around bug 329499. See also bug 413751 and 457194.
	if has_version dev-libs/libffi[pax-kernel]; then
	pax-mark E python
	else
	pax-mark m python
	fi
	}

	src_test() {
	# Tests will not work when cross compiling.
	if tc-is-cross-compiler; then
	elog "Disabling tests due to crosscompiling."
	return
	fi

	# Skip failing tests.
	local skipped_tests="gdb"

	if use sparc ; then
	# bug #788022
	skipped_tests+=" multiprocessing_fork"
	skipped_tests+=" multiprocessing_forkserver"
	fi

	for test in ${skipped_tests}; do
	mv "${S}"/Lib/test/test_${test}.py "${T}"
	done

	# bug 660358
	local -x COLUMNS=80
	local -x PYTHONDONTWRITEBYTECODE=

	local jobs=$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")

	emake test EXTRATESTOPTS="-u-network -j${jobs}" \
	CPPFLAGS= CFLAGS= LDFLAGS= < /dev/tty
	local result=$?

	for test in ${skipped_tests}; do
	mv "${T}/test_${test}.py" "${S}"/Lib/test
	done

	elog "The following tests have been skipped:"
	for test in ${skipped_tests}; do
	elog "test_${test}.py"
	done

	elog "If you would like to run them, you may:"
	elog "cd '${EPREFIX}/usr/lib/python${PYVER}/test'"
	elog "and run the tests separately."

	if [[ ${result} -ne 0 ]]; then
	die "emake test failed"
	fi
	}

	src_install() {
	local libdir=${ED}/usr/lib/python${PYVER}

	emake DESTDIR="${D}" altinstall

	# Remove static library
	rm "${ED}"/usr/$(get_libdir)/libpython*.a \|\| die

	# Fix collisions between different slots of Python.
	rm "${ED}/usr/$(get_libdir)/libpython3.so" \|\| die

	# Cheap hack to get version with ABIFLAGS
	local abiver=$(cd "${ED}/usr/include"; echo python*)
	if [[ ${abiver} != python${PYVER} ]]; then
	# Replace python3.X with a symlink to python3.Xm
	rm "${ED}/usr/bin/python${PYVER}" \|\| die
	dosym "${abiver}" "/usr/bin/python${PYVER}"
	# Create python3.X-config symlink
	dosym "${abiver}-config" "/usr/bin/python${PYVER}-config"
	# Create python-3.5m.pc symlink
	dosym "python-${PYVER}.pc" "/usr/$(get_libdir)/pkgconfig/${abiver/${PYVER}/-${PYVER}}.pc"
	fi

	# python seems to get rebuilt in src_install (bug 569908)
	# Work around it for now.
	if has_version dev-libs/libffi[pax-kernel]; then
	pax-mark E "${ED}/usr/bin/${abiver}"
	else
	pax-mark m "${ED}/usr/bin/${abiver}"
	fi

	use sqlite \|\| rm -r "${libdir}/"{sqlite3,test/test_sqlite*} \|\| die
	use tk \|\| rm -r "${ED}/usr/bin/idle${PYVER}" "${libdir}/"{idlelib,tkinter,test/test_tk*} \|\| die

	use wininst \|\| rm "${libdir}/distutils/command/"wininst-*.exe \|\| die

	dodoc Misc/{ACKS,HISTORY,NEWS}

	if use examples; then
	docinto examples
	find Tools -name __pycache__ -exec rm -fr {} + \|\| die
	dodoc -r Tools
	fi
	insinto /usr/share/gdb/auto-load/usr/$(get_libdir) #443510
	local libname=$(printf 'e:\n\t@echo $(INSTSONAME)\ninclude Makefile\n' \| \
	emake --no-print-directory -s -f - 2>/dev/null)
	newins "${S}"/Tools/gdb/libpython.py "${libname}"-gdb.py

	newconfd "${FILESDIR}/pydoc.conf" pydoc-${PYVER}
	newinitd "${FILESDIR}/pydoc.init" pydoc-${PYVER}
	sed \
	-e "s:@PYDOC_PORT_VARIABLE@:PYDOC${PYVER/./_}_PORT:" \
	-e "s:@PYDOC@:pydoc${PYVER}:" \
	-i "${ED}/etc/conf.d/pydoc-${PYVER}" \
	"${ED}/etc/init.d/pydoc-${PYVER}" \|\| die "sed failed"

	local -x EPYTHON=python${PYVER}
	# if not using a cross-compiler, use the fresh binary
	if ! tc-is-cross-compiler; then
	local -x PYTHON=./python
	local -x LD_LIBRARY_PATH=${LD_LIBRARY_PATH+${LD_LIBRARY_PATH}:}${PWD}
	else
	local -x PYTHON=${EPREFIX}/usr/bin/${EPYTHON}
	fi

	echo "EPYTHON='${EPYTHON}'" > epython.py \|\| die
	python_domodule epython.py

	# python-exec wrapping support
	local pymajor=${PYVER%.*}
	local scriptdir=${D}$(python_get_scriptdir)
	mkdir -p "${scriptdir}" \|\| die
	# python and pythonX
	ln -s "../../../bin/${abiver}" \
	"${scriptdir}/python${pymajor}" \|\| die
	ln -s "python${pymajor}" "${scriptdir}/python" \|\| die
	# python-config and pythonX-config
	# note: we need to create a wrapper rather than symlinking it due
	# to some random dirname(argv[0]) magic performed by python-config
	cat > "${scriptdir}/python${pymajor}-config" <<-EOF \|\| die
	#!/bin/sh
	exec "${abiver}-config" "\${@}"
	EOF
	chmod +x "${scriptdir}/python${pymajor}-config" \|\| die
	ln -s "python${pymajor}-config" \
	"${scriptdir}/python-config" \|\| die
	# 2to3, pydoc
	ln -s "../../../bin/2to3-${PYVER}" \
	"${scriptdir}/2to3" \|\| die
	ln -s "../../../bin/pydoc${PYVER}" \
	"${scriptdir}/pydoc" \|\| die
	# idle
	if use tk; then
	ln -s "../../../bin/idle${PYVER}" \
	"${scriptdir}/idle" \|\| die
	fi

	# Delete unittests as they are a waste of space and are unused.
	rm -rf "${libdir}/test" "${libdir}"/{ctypes,email,sqlite3,unittest}/test \|\| die
	}