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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit autotools
DESCRIPTION="System for computational discrete algebra. Core functionality."
HOMEPAGE="https://www.gap-system.org/"
SRC_URI="https://github.com/gap-system/gap/releases/download/v${PV}/${P}-core.tar.gz"
LICENSE="GPL-2+"
SLOT="0/8"
KEYWORDS="~amd64"
IUSE="cpu_flags_x86_popcnt debug memcheck minimal readline test valgrind"
REQUIRED_USE="?? ( memcheck valgrind )"
RESTRICT="!test? ( test )"
# The minimum set of packages needed for basic GAP operation. You can
# actually start gap without these by passing "--bare" to it on the CLI,
# but don't expect anything to work.
REQUIRED_PKGS="
dev-gap/gapdoc
dev-gap/primgrp
dev-gap/smallgrp
dev-gap/transgrp"
# The packages aren't really required, but GAP tries to load them
# automatically, and will complain to the user if they fail to load.
# The list of automatically-loaded packages is a user preference, called
# AutoloadPackages, and the upstream default can be found in
# lib/package.gi within the GAP source tree. Passing "-A" to GAP on the
# CLI (or setting that user preference) will suppress the autoload
# behavior and allow GAP to start without these, which is why we allow
# the user to skip them with USE=minimal if he knows what he is doing.
AUTOLOADED_PKGS="
dev-gap/autpgrp
dev-gap/alnuth
dev-gap/crisp
dev-gap/ctbllib
dev-gap/factint
dev-gap/fga
dev-gap/irredsol
dev-gap/laguna
dev-gap/polenta
dev-gap/polycyclic
dev-gap/resclasses
dev-gap/sophus
dev-gap/tomlib"
# The test suite will fail without the "required" subset.
BDEPEND="test? ( ${REQUIRED_PKGS} )"
DEPEND="dev-libs/gmp:=
sys-libs/zlib
valgrind? ( dev-debug/valgrind )
readline? ( sys-libs/readline:= )"
RDEPEND="${DEPEND}"
# If you _really_ want to install GAP without the set of required
# packages, use package.provided.
PDEPEND="${REQUIRED_PKGS} !minimal? ( ${AUTOLOADED_PKGS} )"
pkg_setup() {
if use valgrind; then
elog "If you enable the use of valgrind during building"
elog "be sure that you have enabled the proper flags"
elog "in gcc to support it:"
elog "https://wiki.gentoo.org/wiki/Debugging#Valgrind"
fi
}
src_prepare() {
# Remove these to be extra sure we don't use bundled libraries.
rm -r extern || die
rm -r hpcgap/extern || die
# The Makefile just tells you to run ./configure, which then
# produces a GNUmakefile.
rm Makefile || die
# Prepend AC_CONFIG_MACRO_DIRS to configure.ac so that eautoreconf
# recreates aclocal.m4 correctly. Upstream bundles libtool-2.4.6,
# and Gentoo uses 2.4.7, so we need to regenerate aclocal.m4. BUT,
# upstream also uses m4_include directives in aclocal.m4 rather than
# AC_CONFIG_MACRO_DIRS in configure.ac. Without AC_CONFIG_MACRO_DIRS
# eautoreconf will omit all of the macros in cnf/m4.
sed -e '1s;^;AC_CONFIG_MACRO_DIRS([cnf/m4])\n;' -i configure.ac || die
default
# Fix feature detection with pathological CFLAGS
eautoreconf
}
src_configure() {
# We unset $ABI because GAP uses it internally for something else.
# --without-gmp and --without-zlib both trigger an AC_MSG_ERROR
local myeconfargs=(
ABI=""
--with-gmp
--with-zlib
$(use_enable cpu_flags_x86_popcnt popcnt)
$(use_enable memcheck memory-checking)
$(use_enable valgrind)
$(use_with readline)
$(use_enable debug)
)
econf "${myeconfargs[@]}"
}
src_compile() {
# Without this, the default is a quiet build.
emake V=1
}
src_test() {
# We need to specify additional root paths because otherwise the
# recently-built GAP doesn't know where to look for the "required"
# packages (which must already be installed). The two paths we
# append to $S are where those packages wind up.
local gaproots="${S}/;"
gaproots+="${EPREFIX}/usr/$(get_libdir)/gap/;"
gaproots+="${EPREFIX}/usr/share/gap/"
# GAPARGS is a Makefile variable that exists for this purpose. We
# use "-A" to hide the warnings about missing autoloaded-but-not-
# required packages.
emake GAPARGS="-A -l '${gaproots}'" check
}
src_install() {
default
# Manually install Makefile.gappkg
insinto usr/share/gap/etc
doins etc/Makefile.gappkg
# la files removal
find "${ED}" -type f -name '*.la' -delete || die
}
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