dev-cpp/msgpack-cxx: not-really-new package, add 5.0.0

This used to be part of dev-libs/msgpack until upstream release 4.0.0.

Signed-off-by: Marek Szuba <marecki@gentoo.org>

dev-cpp/msgpack-cxx/Manifest

@@ -0,0 +1 @@
+DIST msgpack-cxx-5.0.0.tar.gz 476103 BLAKE2B e631a47e8d39b6ad9c2dd5e782fbbd5044c177e18c619fb52d1293e2c5f2ea7e766e7b26ce6cac36a2ff98217143e12456e0541992afb4f78597ffd3852f2acf SHA512 5ee0237eb1bf05bd4becad32ab145a8f0654f8f0e2e3452331ed3df088cda03ee4cdf1557ba867447e3e18baed924c105c76934f7009dac98b6dc69282c39d0c

dev-cpp/msgpack-cxx/metadata.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project">
+    <email>vim@gentoo.org</email>
+    <name>Gentoo Vim Project</name>
+  </maintainer>
+  <use>
+    <flag name="boost">Enable boost support</flag>
+  </use>
+  <upstream>
+    <remote-id type="github">msgpack/msgpack-c</remote-id>
+  </upstream>
+</pkgmetadata>

dev-cpp/msgpack-cxx/msgpack-cxx-5.0.0.ebuild

@@ -0,0 +1,58 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="MessagePack for C++"
+HOMEPAGE="https://msgpack.org/ https://github.com/msgpack/msgpack-c/"
+SRC_URI="https://github.com/msgpack/msgpack-c/releases/download/cpp-${PV}/${P}.tar.gz"
+
+LICENSE="Boost-1.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+IUSE="+boost doc examples test"
+
+REQUIRED_USE="test? ( boost )"
+
+RESTRICT="!test? ( test )"
+
+RDEPEND="boost? ( dev-libs/boost[context] )"
+DEPEND="${RDEPEND}"
+BDEPEND="doc? ( app-doc/doxygen[dot] )
+	test? ( sys-libs/zlib )"
+
+src_configure() {
+	local mycmakeargs=(
+		-DMSGPACK_BUILD_EXAMPLES=OFF
+		-DMSGPACK_CXX17=ON
+		-DMSGPACK_BUILD_TESTS="$(usex test)"
+		-DMSGPACK_USE_BOOST="$(usex boost)"
+		-DMSGPACK_USE_X3_PARSE="$(usex boost)"
+	)
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake_src_compile
+
+	if use doc; then
+		cmake_build doxygen
+	fi
+}
+
+src_install() {
+	if use doc; then
+		local HTML_DOCS=( "${BUILD_DIR}"/doc_cpp/html/. )
+	fi
+
+	if use examples; then
+		docinto examples
+		dodoc -r example/.
+		docompress -x /usr/share/doc/${PF}/examples
+	fi
+
+	cmake_src_install
+}