rocksdb: use generic libatomic checks

srcpkgs/rocksdb/template

@@ -13,19 +13,17 @@ homepage="https://github.com/facebook/rocksdb"
 distfiles="${homepage}/archive/v${version}.tar.gz"
 checksum=7fb6738263d3f2b360d7468cf2ebe333f3109f3ba1ff80115abd145d75287254
 
-case "$XBPS_TARGET_MACHINE" in
-	armv[56]*|mips*|ppc|ppc-musl) makedepends+=" libatomic-devel";;
-esac
+if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
+	makedepends+=" libatomic-devel"
+fi
 # Use the C++17 feature to align new
 CXXFLAGS="-faligned-new -Wno-error=deprecated-copy -Wno-error=pessimizing-move"
 
 pre_configure() {
-	case "$XBPS_TARGET_MACHINE" in
-	armv[56]*|mips*|ppc|ppc-musl)
+	if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
 		vsed -i CMakeLists.txt \
 			-e 's;target_link_libraries(${ROCKSDB_SHARED_LIB};& atomic;'
-		;;
-	esac
+	fi
 }
 
 post_install() {