sci-libs/ButterflyPACK: new package, add 2.1.0

Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

sci-libs/ButterflyPACK/ButterflyPACK-2.1.0.ebuild

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+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake fortran-2
+
+DESCRIPTION="Mathematical software for solving large-scale dense linear systems"
+HOMEPAGE="https://github.com/liuyangzhuan/ButterflyPACK"
+SRC_URI="https://github.com/liuyangzhuan/${PN}/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+KEYWORDS="~amd64"
+LICENSE="BSD"
+SLOT="0"
+IUSE="arpack magma"
+
+RDEPEND="
+	sci-libs/scalapack
+	virtual/blas
+	virtual/lapack
+	virtual/mpi
+
+	arpack? ( sci-libs/arpack )
+	magma? ( sci-libs/magma )
+"
+DEPEND="${RDEPEND}"
+
+DOCS=( README.md CHANGELOG )
+
+src_configure() {
+	local mycmakeargs=(
+		-DBUILD_SHARED_LIBS=ON
+
+		-DTPL_ARPACK_LIBRARIES=$(usex arpack)
+		-DTPL_MAGMA_LIBRARIES=$(usex magma)
+	)
+	cmake_src_configure
+}
+
+src_install() {
+	cmake_src_install
+	insinto "/usr/share/octave/site/m/${PN}"
+	doins -r MATLAB/*
+}

sci-libs/ButterflyPACK/Manifest

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+DIST ButterflyPACK-2.1.0.tar.gz 378160677 BLAKE2B 0846f57c45717a4dd2bdd4eb04f7e0ca7f2ac8bd9873307c4cd9342d3696f885ede2b65a5a6c3aed55fcc70cfb50bbe9d45957b14c4f8208ffc11a8a4ac6134d SHA512 4f06e60d98f8dd88f40c49b824e6435af5674955326016eab2a62feda31735de15e30ae86f7badb5f31e53be8882aa6535ba52345680a65215608ab75775c2bf

sci-libs/ButterflyPACK/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+    <maintainer type="person">
+        <email>lssndrbarbieri@gmail.com</email>
+        <name>Alessandro Barbieri</name>
+    </maintainer>
+    <upstream>
+        <bugs-to>https://github.com/liuyangzhuan/ButterflyPACK/issues</bugs-to>
+        <remote-id type="github">liuyangzhuan/ButterflyPACK</remote-id>
+    </upstream>
+    <longdescription lang="en">ButterflyPACK is a mathematical software for rapidly solving large-scale dense linear systems that exhibit off-diagonal rank-deficiency. These systems arise frequently from boundary element methods, or factorization phases in finite-difference/finite-element methods. ButterflyPACK relies on low-rank or butterfly formats under Hierarchical matrix, HODLR or other hierarchically nested frameworks to compress, factor and solve the linear system in quasi-linear time. The computationally most intensive phase, factorization, is accelerated via randomized linear algebras. The butterfly format, originally inspired by the butterfly data flow in fast Fourier Transform, is a linear algebra tool well-suited for compressing matrices arising from high-frequency wave equations or highly oscillatory integral operators. ButterflyPACK also provides preconditioned TFQMR iterative solvers.
+ButterflyPACK is written in Fortran 2003, it also has C++ interfaces. ButterflyPACK supports hybrid MPI/OpenMP programming models. In addition, ButterflyPACK can be readily invoked from the software STRUMPACK for solving dense and sparse linear systems.
+    </longdescription>
+    <use>
+        <flag name="arpack">Use arpack as dependency</flag>
+        <flag name="magma">Use magma as dependency</flag>
+    </use>
+</pkgmetadata>