sci-libs/libspatialindex: Fix bug-894054 and bump EAPI

The latest gtest now requires being built with the C++14 dialect or later.
Change the reference of C++11 to C++14 in the affected CMakeLists.txt.

Closes: https://bugs.gentoo.org/894054
Closes: https://github.com/gentoo/gentoo/pull/29562
Signed-off-by: Peter Levine <plevine457@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>

sci-libs/libspatialindex/libspatialindex-1.9.3-r2.ebuild

@@ -0,0 +1,44 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+MY_P="spatialindex-src-${PV}"
+
+DESCRIPTION="C++ implementation of R*-tree, an MVR-tree and a TPR-tree with C API"
+HOMEPAGE="https://libspatialindex.org/
+	https://github.com/libspatialindex/libspatialindex"
+SRC_URI="https://github.com/libspatialindex/${PN}/releases/download/${PV}/${MY_P}.tar.bz2"
+
+LICENSE="MIT"
+SLOT="0/6"
+KEYWORDS="~amd64 ~arm64 ~riscv ~x86"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+RDEPEND=""
+DEPEND="test? ( >=dev-cpp/gtest-1.10.0 )"
+
+S=${WORKDIR}/${MY_P}
+
+PATCHES=(
+	"${FILESDIR}"/${P}-respect-compiler-flags.patch
+	"${FILESDIR}"/${P}-use-system-gtest.patch
+)
+
+src_prepare() {
+	cmake_src_prepare
+
+	sed -i -e 's/CMAKE_CXX_STANDARD 11/CMAKE_CXX_STANDARD 14/' \
+		CMakeLists.txt || die "sed failed"
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DSIDX_BUILD_TESTS=$(usex test)
+	)
+
+	cmake_src_configure
+}