dev-libs/ncnn-20200226: new package.

Signed-off-by: Piotr Karbowski <slashbeast@gentoo.org>

dev-libs/ncnn/Manifest

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+DIST ncnn-20200226.tar.gz 10363010 BLAKE2B 3f5e22ecffc7d36d7babb8c316eb95785f60b2938672cc2fc4a56ae8e4cc79fef8d498032117998a1813b4a5491b4b99f6941ac41be3fe8d6c6e3276ae46396e SHA512 e91694692e2c48ba4b404b26b382939be62c61e8452a09b8c1cdad351adcda1ea8bd19ded671f6c4c6cf979ccc49c181dd47e501a351fe89ecdf17a5395b3fab

dev-libs/ncnn/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>slashbeast@gentoo.org</email>
+		<name>Piotr Karbowski</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">Tencent/ncnn</remote-id>
+	</upstream>
+</pkgmetadata>

dev-libs/ncnn/ncnn-20200226.ebuild

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+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake
+
+DESCRIPTION="A high-performance neural network inference framework"
+HOMEPAGE="https://github.com/Tencent/ncnn"
+
+SRC_URI="https://github.com/Tencent/ncnn/archive/${PV}.tar.gz -> ${P}.tar.gz"
+KEYWORDS="~amd64 ~x86"
+
+LICENSE="BSD"
+SLOT="0"
+IUSE=""
+
+
+DEPEND="
+	dev-util/glslang
+	dev-util/vulkan-headers"
+
+RDEPEND="${DEPEND}"
+BDEPEND=""
+
+src_configure() {
+	local mycmakeargs=(
+		-DCMAKE_TOOLCHAIN_FILE="${S}/toolchains/host.gcc.toolchain.cmake"
+		-DNCNN_BUILD_EXAMPLES=OFF
+		-DNCNN_BUILD_TOOLS=OFF
+		-DNCNN_VULKAN=ON
+	)
+
+	cmake_src_configure
+}