Revert "dev-embedded/etlcpp: treeclean"

This reverts commit fc8dee5c42.

Signed-off-by: Julien Roy <julien@jroy.ca>

dev-embedded/etlcpp/etlcpp-20.35.8.ebuild

@@ -0,0 +1,25 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="A C++ template library for embedded applications"
+HOMEPAGE="https://www.etlcpp.com/"
+SRC_URI="https://github.com/ETLCPP/etl/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+
+S="${WORKDIR}/etl-${PV}"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+src_configure() {
+	local mycmakeargs=(
+		-DBUILD_TESTS=$(usex test)
+	)
+	cmake_src_configure
+}