# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI="7"

FORTRAN_NEEDED="fortran"

inherit autotools eutils fortran-2 flag-o-matic toolchain-funcs multilib prefix

MY_P="${PN}-${PV/_p/-patch}"
MAJOR_P="${PN}-$(ver_cut 1-2)"

DESCRIPTION="General purpose library and file format for storing scientific data"
HOMEPAGE="https://www.hdfgroup.org/HDF5/"
SRC_URI="https://www.hdfgroup.org/ftp/HDF5/releases/${MAJOR_P}/${MY_P}/src/${MY_P}.tar.bz2"

LICENSE="NCSA-HDF"
SLOT="0/${PV%%_p*}"
KEYWORDS="~alpha amd64 ~arm arm64 ~ia64 ppc ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux"
IUSE="cxx debug examples fortran +hl mpi szip threads unsupported zlib"

REQUIRED_USE="
	!unsupported? (
			?? ( cxx mpi )
			threads? ( !cxx !mpi !fortran !hl )
	)"
RDEPEND="
	mpi? ( virtual/mpi[romio] )
	szip? ( virtual/szip )
	zlib? ( sys-libs/zlib:0= )
"
DEPEND="${RDEPEND}
	sys-devel/libtool:2
	>=sys-devel/autoconf-2.69
"
S="${WORKDIR}/${MY_P}"

PATCHES=(
	"${FILESDIR}/${PN}-1.8.9-static_libgfortran.patch"
	"${FILESDIR}/${PN}-1.8.9-mpicxx.patch"
	"${FILESDIR}/${PN}-1.8.13-no-messing-ldpath.patch"
)

pkg_setup() {
	tc-export CXX CC AR # workaround for bug 285148
	use fortran && fortran-2_pkg_setup

	if use mpi; then
		if has_version 'sci-libs/hdf5[-mpi]'; then
			ewarn "Installing hdf5 with mpi enabled with a previous hdf5 with mpi disabled may fail."
			ewarn "Try to uninstall the current hdf5 prior to enabling mpi support."
		fi
		export CC="mpicc"
		use fortran && export FC="mpif90"
		append-ldflags -lmpi
	elif has_version 'sci-libs/hdf5[mpi]'; then
		ewarn "Installing hdf5 with mpi disabled while having hdf5 installed with mpi enabled may fail."
		ewarn "Try to uninstall the current hdf5 prior to disabling mpi support."
	fi
}

src_prepare() {
	# respect gentoo examples directory
	sed \
		-e "s:hdf5_examples:doc/${PF}/examples:g" \
		-i $(find . -name Makefile.am) $(find . -name "run*.sh.in") || die
	sed \
		-e '/docdir/d' \
		-i config/commence.am || die
	if ! use examples; then
		sed -e '/^install:/ s/install-examples//' \
			-i Makefile.am || die #409091
	fi
	# enable shared libs by default for h5cc config utility
	sed -i -e "s/SHLIB:-no/SHLIB:-yes/g" tools/src/misc/h5cc.in || die
	hprefixify m4/libtool.m4

	default
	eautomake
}

src_configure() {
	local myconf=(
		--disable-static
		--enable-deprecated-symbols
		--enable-build-mode=$(usex debug debug production)
		$(use_enable cxx)
		$(use_enable debug codestack)
		$(use_enable fortran)
		$(use_enable hl)
		$(use_enable mpi parallel)
		$(use_enable threads threadsafe)
		$(use_enable unsupported)
		$(use_with szip szlib)
		$(use_with threads pthread)
		$(use_with zlib)
	)
	econf "${myconf[@]}"
}

src_install() {
	default

	# no static archives
	find "${D}" -name '*.la' -delete || die
}