gentoo-overlay/sci-libs/nfft/nfft-3.5.2.ebuild

# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit toolchain-funcs

DESCRIPTION="library for nonequispaced discrete Fourier transformations"
HOMEPAGE="https://www-user.tu-chemnitz.de/~potts/nfft/"
SRC_URI="https://github.com/NFFT/nfft/releases/download/${PV}/${P}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="doc openmp"

RDEPEND="sci-libs/fftw:3.0[threads,openmp?]"
DEPEND="${RDEPEND}"

pkg_pretend() {
	if [[ ${MERGE_TYPE} != binary ]] && use openmp; then
		if ! tc-has-openmp; then
			ewarn "OpenMP is not available in your current selected compiler"

			if tc-is-clang; then
				ewarn "OpenMP support in sys-devel/clang is provided by sys-libs/libomp,"
				ewarn "which you will need to build ${CATEGORY}/${PN} with USE=\"openmp\""
			fi

			die "need openmp capable compiler"
		fi
	fi
}

src_configure() {
	econf \
		--enable-all \
		--enable-shared \
		--disable-static \
		$(use_enable openmp)
}

src_install() {
	default

	if ! use doc; then
		rm -r "${ED}"/usr/share/doc/${P}/html || die
	fi

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