# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=6

inherit cmake-utils flag-o-matic

MY_P=CGAL-${PV}

DESCRIPTION="C++ library for geometric algorithms and data structures"
HOMEPAGE="https://www.cgal.org/"
SRC_URI="
	https://github.com/CGAL/cgal/releases/download/releases%2F${MY_P}/${MY_P}.tar.xz
	doc? ( https://github.com/CGAL/cgal/releases/download/releases%2F${MY_P}/${MY_P}-doc_html.tar.xz )"

LICENSE="LGPL-3 GPL-3 Boost-1.0"
SLOT="0/13"
KEYWORDS="~amd64 x86 ~amd64-linux ~x86-linux"
IUSE="doc examples +gmp mpfi ntl qt5"

RDEPEND="
	dev-cpp/eigen
	dev-libs/boost:=[threads]
	dev-libs/mpfr:0=
	sys-libs/zlib:=
	x11-libs/libX11:=
	virtual/glu:=
	virtual/opengl:=
	gmp? ( dev-libs/gmp:=[cxx] )
	mpfi? ( sci-libs/mpfi )
	ntl? ( dev-libs/ntl )
	qt5? (
		dev-qt/qtcore:5
		dev-qt/qtgui:5
		dev-qt/qtopengl:5
		dev-qt/qtsvg:5
		dev-qt/qtwidgets:5
	)"
DEPEND="${RDEPEND}
	app-arch/xz-utils
	virtual/pkgconfig"

S="${WORKDIR}/${MY_P}"

PATCHES=(
	"${FILESDIR}/${PN}-4.11.1-fix-buildsystem.patch"
)

src_prepare() {
	cmake-utils_src_prepare
	# modules provided by dev-util/cmake and dev-cpp/eigen
	rm cmake/modules/Find{Eigen3,GLEW,OpenGL}.cmake || die
	sed -e '/install(FILES AUTHORS/d' \
		-i CMakeLists.txt || die
}

src_configure() {
	local mycmakeargs=(
		-DCGAL_INSTALL_LIB_DIR="$(get_libdir)"
		-DCGAL_INSTALL_CMAKE_DIR="$(get_libdir)/cmake/CGAL"
		-DWITH_LEDA=OFF
		-DWITH_Eigen3=ON
		-DWITH_ZLIB=ON
		-DWITH_GMP="$(usex gmp)"
		-DWITH_GMPXX="$(usex gmp)"
		-DWITH_MPFI="$(usex mpfi)"
		-DWITH_NTL="$(usex ntl)"
		-DWITH_CGAL_Qt5="$(usex qt5)"
	)
	cmake-utils_src_configure
}

src_install() {
	use doc && local HTML_DOCS=( "${WORKDIR}"/doc_html/. )
	cmake-utils_src_install
	if use examples; then
		dodoc -r examples demo
		docompress -x /usr/share/doc/${PF}/{examples,demo}
	fi
}