diff --git a/backports/libspatialindex/APKBUILD b/backports/libspatialindex/APKBUILD
new file mode 100644
index 0000000..1de6552
--- /dev/null
+++ b/backports/libspatialindex/APKBUILD
@@ -0,0 +1,33 @@
+# Contributor: Alex Yam <alex@alexyam.com>
+# Maintainer: Alex Yam <alex@alexyam.com>
+pkgname=libspatialindex
+pkgver=0_git20210205
+_commit=8ee223632f95c81f49f5eb2d547ad973475c4601
+pkgrel=1
+pkgdesc="extensible framework for robust spatial indexing methods"
+url="https://libspatialindex.org/"
+arch="all"
+license="MIT"
+makedepends="cmake"
+subpackages="$pkgname-dev"
+source="$pkgname-$_commit.tar.gz::https://github.com/libspatialindex/libspatialindex/archive/$_commit.tar.gz"
+builddir="$srcdir/$pkgname-$_commit"
+
+build() {
+	cmake -B build \
+		-DCMAKE_BUILD_TYPE=MinSizeRel \
+		-DCMAKE_PREFIX_PATH=/usr \
+		-DCMAKE_INSTALL_PREFIX=/usr \
+		-DBUILD_TESTING=ON
+	cmake --build build
+}
+
+check() {
+	cd build && ctest
+}
+
+package() {
+	DESTDIR="$pkgdir" cmake --build build --target install
+}
+
+sha512sums="caf91aac77b75445e4fc4d0baedcd10c619b2097dfd841b00339d9ddd4b73db05b99de1d84be88f1083f4713a936cf110d5851523491f5a74c6f96e1d5795dbb  libspatialindex-8ee223632f95c81f49f5eb2d547ad973475c4601.tar.gz"