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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit autotools toolchain-funcs
DESCRIPTION="C++ template library for integer and finite-field linear algebra"
HOMEPAGE="https://linalg.org/"
SRC_URI="https://github.com/linbox-team/${PN}/releases/download/v${PV}/${P}.tar.gz"
# I think only macros/libtool.m4 (and COPYING) is GPL-2+; the source
# headers all say LGPL-2.1
LICENSE="GPL-2+ LGPL-2.1"
SLOT="0"
KEYWORDS="amd64 ~riscv ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
IUSE="doc opencl openmp"
BDEPEND="doc? ( app-text/doxygen )"
# The project README says that gmp, givaro, and blas/lapack are required
# transitively via fflas-ffpack, but that's not true. The build system
# checks for them, and `git grep` shows that they're used directly.
DEPEND="dev-libs/gmp[cxx(+)]
=sci-libs/givaro-4.2*
=sci-libs/fflas-ffpack-2.5*
virtual/cblas
virtual/lapack
opencl? ( virtual/opencl )
dev-libs/ntl:=
sci-libs/iml
dev-libs/mpfr:=
sci-mathematics/flint"
# Use mathjax to render inline latex rather than requiring a working latex
# installation to generate bitmaps.
RDEPEND="${DEPEND}
doc? ( >=dev-libs/mathjax-3 )
"
PATCHES=(
"${FILESDIR}"/${PN}-1.7.0-hardened-testfails.patch
"${FILESDIR}"/${PN}-1.7.0-gcc14.patch
)
# The --enable-openmp flag has been removed upstream, but we don't want
# openmp support to disappear after the package has been compiled with
# it, so we retain the USE flag and the toolchain check.
pkg_pretend() {
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
pkg_setup() {
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
src_prepare() {
default
if use doc; then
# Avoid the need for a working LaTeX installation. MathJax does
# slow down the browser a bit but it also renders much more
# nicely than the latex-generated bitmaps would.
echo "
USE_MATHJAX = YES
MATHJAX_VERSION = MathJax_3
MATHJAX_RELPATH = \"${EPREFIX}/usr/share/mathjax\"
MATHJAX_EXTENSIONS = ams
" >> doc/Doxyfile.mod || die
fi
eautoreconf
}
src_configure() {
#
# The --with-all flag includes,
#
# --with-givaro: used for finite fields, integer, etc. (required)
# --with-fflas-ffpack: small field dense linear algebra (required)
# --with-ntl: used for finite field, polynomial arithmetic (optional)
# --with-iml: used for fast integer/rational linear algebra (optional)
# --with-mpfr: not sure, doesn't seem to be used? (optional)
# --with-flint: used in algorithms/matrix-blas3 once (optional)
# --with-fplll: an fplll interface not directly used (optional)
# --with-doxygen: needed with --enable-doc to build them (optional)
#
# Some of these could be behind USE flags, but the ./configure output
# says that they're "not yet mandatory," which makes me think we might
# be overcomplicating things to make them optional right now.
#
econf \
--with-docdir="${EPREFIX}/usr/share/doc/${PF}" \
--with-all="${EPREFIX}"/usr \
--without-fplll \
--without-archnative \
$(use_enable doc) \
$(use_with opencl ocl)
}
src_install() {
default
find "${ED}" -name '*.la' -delete || die
if use doc; then
# These files are used for incremental doxygen builds but aren't
# part of the final output. Check on
#
# https://github.com/linbox-team/linbox/issues/252
#
# periodically to see if this is pointless.
find "${ED}/usr/share/doc/${PF}" -type f -name '*.md5' -delete || die
find "${ED}/usr/share/doc/${PF}" -type f -name '*.map' -delete || die
fi
}
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