sci-mathematics/singular: add julia and polymake useflags

Co-authored-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/22742
Package-Manager: Portage-3.0.28, Repoman-3.0.3
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>

2 files changed, 130 insertions, 0 deletions

diff --git a/sci-mathematics/singular/metadata.xml b/sci-mathematics/singular/metadata.xml
index 098312eeb426..5d46057110ae 100644
--- a/sci-mathematics/singular/metadata.xml
+++ b/sci-mathematics/singular/metadata.xml
@@ -5,4 +5,12 @@
     <email>sci-mathematics@gentoo.org</email>
     <name>Gentoo Mathematics Project</name>
   </maintainer>
+  <use>
+    <flag name="julia">Enables interface for Singular to julia</flag>
+    <flag name="polymake">Enable the interface to TOPCOM</flag>
+  </use>
+  <upstream>
+    <bugs-to>https://github.com/Singular/Singular/issues</bugs-to>
+    <remote-id type="github">Singular/Singular</remote-id>
+  </upstream>
 </pkgmetadata>
diff --git a/sci-mathematics/singular/singular-4.2.1-r1.ebuild b/sci-mathematics/singular/singular-4.2.1-r1.ebuild
new file mode 100644
index 000000000000..96abef3a90a3
--- /dev/null
+++ b/sci-mathematics/singular/singular-4.2.1-r1.ebuild
@@ -0,0 +1,122 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools elisp-common flag-o-matic
+
+MY_PN=Singular
+MY_PV=$(ver_rs 3 '')
+# Consistency is different...
+MY_DIR2=$(ver_cut 1-3 ${PV})
+MY_DIR=$(ver_rs 1- '-' ${MY_DIR2})
+
+DESCRIPTION="Computer algebra system for polynomial computations"
+HOMEPAGE="https://www.singular.uni-kl.de/ https://github.com/Singular/Singular"
+SRC_URI="ftp://jim.mathematik.uni-kl.de/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN}-${MY_PV}.tar.gz"
+S="${WORKDIR}/${PN}-${MY_DIR2}"
+
+LICENSE="BSD GPL-2 GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~x86 ~x86-linux"
+IUSE="emacs examples julia polymake +readline static-libs"
+
+RDEPEND="
+	dev-lang/perl
+	dev-libs/gmp:0
+	dev-libs/ntl:=
+	sci-libs/cddlib
+	sci-mathematics/flint
+	emacs? ( >=app-editors/emacs-23.1:* )
+	julia? ( dev-lang/julia )
+	polymake? ( sci-mathematics/polymake )
+	readline? ( sys-libs/readline )
+"
+DEPEND="${RDEPEND}"
+
+SITEFILE=60${PN}-gentoo.el
+
+PATCHES=(
+	"${FILESDIR}/${PN}-4.2.0-doc_install-v2.patch"
+)
+
+src_prepare() {
+	default
+
+	eautoreconf
+}
+
+src_configure() {
+	# Needed to avoid segfaults in the test suite until
+	#
+	#   https://github.com/Singular/Singular/issues/1105
+	#
+	# makes its way into a release.
+	append-cxxflags $(test-flags-CXX -fno-delete-null-pointer-checks)
+
+	local myconf=(
+		--disable-debug
+		--disable-doc
+		--disable-optimizationflags
+		--disable-pyobject-module
+		--disable-python
+		--disable-python-module
+		--disable-python_module
+		--enable-factory
+		--enable-gfanlib
+		--enable-libfac
+		--with-flint
+		--with-gmp
+		--with-libparse
+		--with-ntl
+		--without-python
+		--without-pythonmodule
+		$(use_enable emacs)
+		$(use_enable julia)
+		$(use_enable polymake polymake-module)
+		$(use_enable static-libs static)
+		$(use_with readline)
+	)
+	econf "${myconf[@]}"
+}
+
+src_compile() {
+	default
+
+	if use emacs; then
+		pushd "${S}"/emacs
+		elisp-compile *.el || die "elisp-compile failed"
+		popd
+	fi
+}
+
+src_install() {
+	# Do not compress singular's info file (singular.hlp)
+	# some consumer of that file do not know how to deal with compression
+	docompress -x /usr/share/info
+
+	default
+
+	dosym Singular /usr/bin/"${PN}"
+
+	# purge .la file
+	find "${ED}" -name '*.la' -delete || die
+}
+
+src_test() {
+	# SINGULAR_PROCS_DIR need to be set to "" otherwise plugins from
+	# an already installed version of singular may be used and cause segfault
+	# See https://github.com/Singular/Sources/issues/980
+	SINGULAR_PROCS_DIR="" emake check
+}
+
+pkg_postinst() {
+	einfo "Additional functionality can be enabled by installing"
+	einfo "sci-mathematics/4ti2"
+
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}