--- /dev/null
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+PYTHON_COMPAT=( python2_7 python3_{4,5,6} )
+
+inherit cmake-utils python-r1
+
+DESCRIPTION="Python bindings for OpenBabel (including Pybel)"
+HOMEPAGE="http://openbabel.sourceforge.net/"
+SRC_URI="mirror://sourceforge/openbabel/openbabel-${PV}.tar.gz"
+
+KEYWORDS="~amd64 ~arm ~ppc ~x86 ~amd64-linux ~x86-linux"
+SLOT="0/5"
+LICENSE="GPL-2"
+IUSE=""
+
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+RDEPEND="${PYTHON_DEPS}
+ ~sci-chemistry/openbabel-${PV}
+ sys-libs/zlib"
+DEPEND="${RDEPEND}
+ >=dev-lang/swig-2"
+
+S="${WORKDIR}"/openbabel-${PV}
+
+PATCHES=(
+ "${FILESDIR}"/${PN}-2.3.2-gcc-6_and_7-backport.patch
+ )
+
+src_prepare() {
+ cmake-utils_src_prepare
+ sed \
+ -e "s:\"\.\.\":\"${EPREFIX}/usr\":g" \
+ -i test/testbabel.py || die
+ swig -python -c++ -small -O -templatereduce -naturalvar \
+ -I"${EPREFIX}/usr/include/openbabel-2.0" \
+ -o scripts/python/openbabel-python.cpp \
+ -DHAVE_EIGEN \
+ -outdir scripts/python \
+ scripts/openbabel-python.i \
+ || die "Regeneration of openbabel-python.cpp failed"
+ sed \
+ -e '/__GNUC__/s:== 4:>= 4:g' \
+ -i include/openbabel/shared_ptr.h || die
+}
+
+src_configure() {
+ my_impl_src_configure() {
+ local mycmakeargs=(
+ -DCMAKE_INSTALL_RPATH=
+ -DBINDINGS_ONLY=ON
+ -DBABEL_SYSTEM_LIBRARY="${EPREFIX}/usr/$(get_libdir)/libopenbabel.so"
+ -DOB_MODULE_PATH="${EPREFIX}/usr/$(get_libdir)/openbabel/${PV}"
+ -DLIB_INSTALL_DIR="${D}$(python_get_sitedir)"
+ -DPYTHON_BINDINGS=ON
+ -DPYTHON_EXECUTABLE=${PYTHON}
+ -DPYTHON_INCLUDE_DIR="$(python_get_includedir)"
+ -DPYTHON_INCLUDE_PATH="$(python_get_includedir)"
+ -DPYTHON_LIBRARY="$(python_get_library_path)"
+ -DENABLE_TESTS=ON
+ )
+
+ cmake-utils_src_configure
+ }
+
+ python_foreach_impl my_impl_src_configure
+}
+
+src_compile() {
+ python_foreach_impl cmake-utils_src_make bindings_python
+}
+
+src_test() {
+ python_foreach_impl cmake-utils_src_test -R py
+}
+
+src_install() {
+ my_impl_src_install() {
+ cd "${BUILD_DIR}" || die
+
+ cmake -DCOMPONENT=bindings_python -P cmake_install.cmake
+
+ python_optimize
+ }
+
+ python_foreach_impl my_impl_src_install
+}