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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit flag-o-matic toolchain-funcs
DESCRIPTION="Compute Groebner fans and tropical varieties"
HOMEPAGE="https://users-math.au.dk/~jensen/software/gfan/gfan.html"
SRC_URI="https://users-math.au.dk/~jensen/software/${PN}/${PN}${PV}.tar.gz"
S="${WORKDIR}/${PN}${PV}"
LICENSE="GPL-2+"
SLOT="0"
KEYWORDS="~amd64 ~arm ~riscv ~x86 ~amd64-linux ~x86-linux"
IUSE="doc"
BDEPEND="doc? ( virtual/latex-base )"
DEPEND="dev-libs/gmp:0=[cxx(+)]
sci-libs/cddlib:0="
RDEPEND="${DEPEND}"
PATCHES=(
"${FILESDIR}/${PN}-0.6.2-testsuite.patch"
"${FILESDIR}/${PN}-0.6.2-Makefile.patch"
"${FILESDIR}/${PN}-0.6.2-fix-0602ResultantFanProjection.patch"
"${FILESDIR}/${PN}-0.6.2-fix-spelling-errors.patch"
"${FILESDIR}/${PN}-0.6.2-find-name.patch"
)
pkg_setup() {
tc-export CC CXX
# This should really go in cppflags, but that doesn't work with
# gfan's hand-written Makefile.
append-cxxflags -DNOCDDPREFIX -I"${EPREFIX}"/usr/include/cddlib
}
src_prepare() {
default
# And this one fails (harmlessly) on x86, bug 818397.
rm -r testsuite/0009RenderStairCase || \
die "unable to disable test 0009RenderStairCase"
}
src_configure() {
# -Werror=odr
# https://bugs.gentoo.org/863044
# Only contact method is email. I have sent one detailing the issue.
filter-lto
# The upstream Makefile says that GCC produces bad code with -O3.
replace-flags "-O3" "-O2"
default
}
src_compile() {
default
if use doc; then
pushd doc > /dev/null || die
# The LaTeX build commands need to be repeated until the
# document "stops changing," which is not as easy as it
# sounds to detect. Running it twice seems to work here.
for iteration in 1 2; do
latex manual.tex && \
bibtex manual && \
dvipdf manual.dvi manual.pdf || die
done
popd > /dev/null || die
fi
}
src_install() {
emake PREFIX="${ED}/usr" install
use doc && dodoc doc/manual.pdf
}
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