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

EAPI=7

inherit cmake flag-o-matic

DESCRIPTION="Scientific library and interface for array oriented data access"
HOMEPAGE="https://www.unidata.ucar.edu/software/netcdf/"
SRC_URI="https://github.com/Unidata/netcdf-c/archive/v${PV}.tar.gz -> ${P}.tar.gz"
S="${WORKDIR}/${PN}-c-${PV}"

LICENSE="UCAR-Unidata"
# SONAME of libnetcdf.so
SLOT="0/19"
KEYWORDS="amd64 ~arm ~arm64 ~ia64 ~ppc ppc64 -riscv ~x86 ~amd64-linux ~x86-linux"
IUSE="+dap doc examples hdf +hdf5 mpi szip test tools"
RESTRICT="!test? ( test )"

RDEPEND="dev-libs/libxml2
	dap? ( net-misc/curl:0= )
	hdf? (
		media-libs/libjpeg-turbo:=
		sci-libs/hdf:0=
		sci-libs/hdf5:0=
	)
	hdf5? ( sci-libs/hdf5:0=[hl(+),mpi=,szip=,zlib] )"
DEPEND="${RDEPEND}"
BDEPEND="virtual/pkgconfig
	doc? ( app-doc/doxygen[dot] )"

REQUIRED_USE="
	test? ( tools )
	szip? ( hdf5 )
	mpi? ( hdf5 )"

PATCHES=(
	"${FILESDIR}/${PN}-4.8.1-big-endian-build.patch"
	"${FILESDIR}/${PN}-4.7.4-big-endian-test.patch"
)

src_prepare() {
	# skip test that requires network
	sed -i -e '/run_get_hdf4_files/d' hdf4_test/CMakeLists.txt || die

	cmake_src_prepare
}

src_configure() {
	use mpi && export CC=mpicc

	# Temporary workaround for test breakage
	# https://github.com/Unidata/netcdf-c/issues/1983
	# bug #827042
	append-flags -fno-strict-aliasing

	local mycmakeargs=(
		-DENABLE_DAP_REMOTE_TESTS=OFF
		# Enable for >4.8.1 (not yet in a release)
		#-DENABLE_LIBXML2=ON
		-DBUILD_UTILITIES=$(usex tools)
		-DENABLE_DAP=$(usex dap)
		-DENABLE_DOXYGEN=$(usex doc)
		-DENABLE_EXAMPLES=$(usex examples)
		-DENABLE_HDF4=$(usex hdf)
		-DENABLE_NETCDF_4=$(usex hdf5)
		-DENABLE_TESTS=$(usex test)
	)

	cmake_src_configure
}

src_test() {
	# fails parallel tests: bug #621486
	cmake_src_test -j1
}

src_install() {
	cmake_src_install

	# bug #827188
	sed -i -e "s:${EPREFIX}/usr/$(get_libdir)/libdl.so;:dl;:" "${ED}/usr/$(get_libdir)/cmake/netCDF/netCDFTargets.cmake" || die
}