dev-cpp/vexcl: new package WIP

Package-Manager: Portage-3.0.18, Repoman-3.0.3
Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

dev-cpp/vexcl/Manifest

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+DIST vexcl-1.4.2.tar.gz 412861 BLAKE2B 145948d2c2e6712a30542eca6690fe9f260cc9fe2064ffd01aaa89c3ddae1e0826206ffedfc362a6fb128f2909fc22948957f40cb45dc963d703abdff2ddd386 SHA512 b8bc759269025be21865178485015eb8489596be80c505d4699efdb517cb610a2d5fed10545ec7888f4cb4c7b3e2db5e3c2dd879c0d2fd95d2d0e59d1d3b790f

dev-cpp/vexcl/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<longdescription>VexCL is a vector expression template library for OpenCL/CUDA. It has been created for ease of GPGPU development with C++. VexCL strives to reduce amount of boilerplate code needed to develop GPGPU applications. The library provides convenient and intuitive notation for vector arithmetic, reduction, sparse matrix-vector products, etc. Multi-device and even multi-platform computations are supported. The source code of the library is distributed under very permissive MIT license.</longdescription>
+	<maintainer type="person">
+		<description>comaintainers welcome</description>
+		<email>lssndrbarbieri@gmail.com</email>
+		<name>Alessandro Barbieri</name>
+	</maintainer>
+	<upstream>
+		<maintainer>
+			<email>dennis.demidov@gmail.com</email>
+			<name>Denis Demidov</name>
+		</maintainer>
+		<remote-id type="github">ddemidov/vexcl</remote-id>
+	</upstream>
+</pkgmetadata>

dev-cpp/vexcl/vexcl-1.4.2.ebuild

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+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake
+
+DESCRIPTION="VexCL - Vector expression template library for OpenCL"
+HOMEPAGE="https://github.com/ddemidov/vexcl"
+SRC_URI="https://github.com/ddemidov/vexcl/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+#TODO: cuda doc test
+IUSE="examples"
+
+RDEPEND="
+	dev-libs/boost:=
+	virtual/opencl
+"
+DEPEND="${RDEPEND}"
+
+src_install() {
+	cmake_src_install
+	if use examples; then
+		dodoc -r examples
+		docompress -x "/usr/share/doc/${P}/examples"
+	fi
+}