user/json: New package

user/json/APKBUILD

+# Maintainer: A. Wilcox <awilfox@adelielinux.org>
+pkgname=json
+pkgver=3.11.3
+pkgrel=0
+pkgdesc="JSON for Modern C++"
+url="https://json.nlohmann.me/"
+arch="noarch"
+license="MIT"
+depends=""
+makedepends="cmake"
+subpackages=""
+source="json-$pkgver.tar.gz::https://github.com/nlohmann/json/archive/refs/tags/v$pkgver.tar.gz"
+
+build() {
+	if [ "$CBUILD" != "$CHOST" ]; then
+		CMAKE_CROSSOPTS="-DCMAKE_SYSTEM_NAME=Linux -DCMAKE_HOST_SYSTEM_NAME=Linux"
+	fi
+	cmake \
+		-DCMAKE_INSTALL_PREFIX=/usr \
+		-DCMAKE_INSTALL_LIBDIR=lib \
+		-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+		${CMAKE_CROSSOPTS} \
+		-Bbuild
+	make DESTDIR="$pkgdir" -C build
+}
+
+check() {
+	cd build
+	CTEST_OUTPUT_ON_FAILURE=true ctest -E '(cmake_fetch*|test-unicode*)' -j${JOBS}
+}
+
+package() {
+	make DESTDIR="$pkgdir" -C build install
+}
+
+sha512sums="7df19b621de34f08d5d5c0a25e8225975980841ef2e48536abcf22526ed7fb99f88ad954a2cb823115db59ccc88d1dbe74fe6c281b5644b976b33fb78db9d717  json-3.11.3.tar.gz"