dev-cpp/cli11: add 2.1.0, drop 1.9.1

- add subslot
- enable normal tests

Signed-off-by: Anna (cybertailor) Vyalkova <cyber+gentoo@sysrq.in>

dev-cpp/cli11/cli11-2.1.0.ebuild

@@ -0,0 +1,51 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DOCS_BUILDER="doxygen"
+DOCS_DIR="docs"
+inherit cmake docs
+
+CATCH_PV=2.13.6
+DESCRIPTION="Command line parser for C++11"
+HOMEPAGE="https://github.com/CLIUtils/CLI11 https://cliutils.github.io/CLI11/book"
+SRC_URI="
+	https://github.com/CLIUtils/${PN}/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz
+	test? ( https://github.com/philsquared/Catch/releases/download/v${CATCH_PV}/catch.hpp -> catch-${CATCH_PV}.hpp )
+"
+S="${WORKDIR}/CLI11-${PV}"
+
+LICENSE="BSD"
+SLOT="0/2"
+KEYWORDS="~amd64 ~x86"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+DOCS=( README.md CHANGELOG.md )
+
+src_unpack() {
+	unpack ${P}.tar.gz
+
+	# work around cmake's file(DOWNLOAD ...)
+	cd "${S}" || die
+	if use test; then
+		_cmake_check_build_dir
+		mkdir "${BUILD_DIR}"/tests || die
+		cp "${DISTDIR}"/catch-${CATCH_PV}.hpp "${BUILD_DIR}"/tests/catch.hpp || die
+	fi
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DCLI11_BUILD_DOCS=OFF  # handled by docs.eclass
+		-DCLI11_BUILD_TESTS=$(usex test)
+	)
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake_src_compile
+	docs_compile
+}