func checkPathLength(pathName string) error {
	// Apple OS X path length is limited to 1016
	if runtime.GOOS == "darwin" && len(pathName) > 1016 {
		return errFileNameTooLong
	}

	// Disallow more than 1024 characters on windows, there
	// are no known name_max limits on Windows.
	if runtime.GOOS == "windows" && len(pathName) > 1024 {
		return errFileNameTooLong
	}

# excludes all but a subset of function names.
# On MacOS, the linker does not support version_script, but has an
# an "-exported_symbols_list" command.  -z defs disallows undefined
# symbols in object files.

pywrap_aware_tf_cc_shared_object(
    name = "tensorflow",
    linkopts = select({
        "//tensorflow:macos": [

	}

	defer func() {
		if err == nil {
			z.mpCache.Delete(uploadID)
			globalNotificationSys.DeleteUploadID(ctx, uploadID)
		}
	}()

	// Hold write locks to verify uploaded parts, also disallows any
	// parallel PutObjectPart() requests.
	uploadIDLock := z.NewNSLock(bucket, pathJoin(object, uploadID))
	wlkctx, err := uploadIDLock.GetLock(ctx, globalOperationTimeout)
	if err != nil {
		return objInfo, err