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

EAPI=7

inherit multilib-minimal

# Upstream distribute patches before a new release is made
# See https://www.mpfr.org/mpfr-current/#bugs for the latest version (and patches)

# Check whether any patches touch e.g. manuals!
# https://archives.gentoo.org/gentoo-releng-autobuilds/message/c2dd39fc4ebc849db6bb0f551739e2ed
MY_PV=$(ver_cut 1-3)
MY_PATCH=$(ver_cut 5-)
MY_P=${PN}-${MY_PV}

DESCRIPTION="Library for multiple-precision floating-point computations with exact rounding"
HOMEPAGE="https://www.mpfr.org/ https://gitlab.inria.fr/mpfr"
SRC_URI="https://www.mpfr.org/${MY_P}/${MY_P}.tar.xz"
if [[ ${PV} == *_p* ]] ; then
	# If this is a patch release, we have to download each of the patches:
	# -_pN = N patches
	# - patch file names are like: patch01, patch02, ..., patch10, patch12, ..
	# => name the ebuild _pN where N is the number of patches on the 'bugs' page.
	my_patch_index=1
	while [[ ${my_patch_index} -le ${MY_PATCH} ]] ; do
		SRC_URI+=" "
		SRC_URI+=$(printf "https://www.mpfr.org/${MY_P}/patch%02d -> ${MY_P}-patch%02d.patch " ${my_patch_index} ${my_patch_index})
		my_patch_index=$((my_patch_index+1))
	done
	unset my_patch_index
fi
S="${WORKDIR}/${MY_P}"

LICENSE="LGPL-2.1"
# This is a critical package; if SONAME changes, bump subslot but also add
# preserve-libs.eclass usage to pkg_*inst! See e.g. the readline ebuild.
SLOT="0/6" # libmpfr.so version
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
IUSE="static-libs"

RDEPEND=">=dev-libs/gmp-5.0.0:=[${MULTILIB_USEDEP},static-libs?]"
DEPEND="${RDEPEND}"

PATCHES=()

if [[ ${PV} == *_p* ]] ; then
	# Apply the upstream patches released out of band
	PATCHES+=( "${DISTDIR}"/ )
fi

HTML_DOCS=( doc/FAQ.html )

src_prepare() {
	default

	# 4.1.0_p13's patch10 patches a .texi file *and* the corresponding
	# info file. We need to make sure the info file is newer, so the
	# build doesn't try to run makeinfo. Won't be needed on next release.
	touch "${S}/doc/mpfr.info" || die
}

multilib_src_configure() {
	# bug 476336#19
	# Make sure mpfr doesn't go probing toolchains it shouldn't
	ECONF_SOURCE=${S} \
		user_redefine_cc=yes \
		econf $(use_enable static-libs static)
}

multilib_src_install_all() {
	rm "${ED}"/usr/share/doc/${PF}/COPYING* || die

	if ! use static-libs ; then
		find "${ED}"/usr -name '*.la' -delete || die
	fi
}