dev-libs/olm: New package

Dependency for dev-libs/mtxclient.

Signed-off-by: Ronny (tastytea) Gutbrod <gentoo@tastytea.de>

dev-libs/olm/Manifest

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+DIST olm-3.1.4.tar.bz2 461540 BLAKE2B fa69b1543330c5da37c04227b51197ba57968ef24def40df621b85c0988eac91f8a155f600ab26849f2cd213059c97c7035be6dcca0943245cd4e4895da314b3 SHA512 87265d835ca7332d162bd3573dffdd09c8337c464dd673f100db9193e8ea4cedd8cb2a92cf2c34ad1b552a55bbbce8f87a47559ccfba03fa69b32fc7ff07f5f0

dev-libs/olm/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>gentoo@tastytea.de</email>
+		<name>Ronny (tastytea) Gutbrod</name>
+	</maintainer>
+	<longdescription lang="en">
+		An implementation of the Double Ratchet cryptographic ratchet written in
+		C and C++11 and exposed as a C API.
+	</longdescription>
+	<upstream>
+		<bugs-to>https://gitlab.matrix.org/matrix-org/olm/-/issues</bugs-to>
+	</upstream>
+</pkgmetadata>

dev-libs/olm/olm-3.1.4.ebuild

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+# Copyright 2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake
+
+DESCRIPTION="Implementation of the olm and megolm cryptographic ratchets"
+HOMEPAGE="https://gitlab.matrix.org/matrix-org/olm"
+SRC_URI="https://gitlab.matrix.org/matrix-org/${PN}/-/archive/${PV}/${P}.tar.bz2"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+IUSE="doc test"
+KEYWORDS="~amd64"
+
+RDEPEND=""
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	local -a mycmakeargs=(
+		-DOLM_TESTS="$(usex test)"
+	)
+
+	cmake_src_configure
+}
+
+src_test() {
+	BUILD_DIR="${BUILD_DIR}/tests" cmake_src_test
+}
+
+src_install() {
+	use doc && DOCS=( README.md docs/{{,meg}olm,signing}.md )
+
+	cmake_src_install
+}