This library is developed against the latest version of libsystemd. As such there may be FFI bindings included which are not available in previous versions. Issues may arise during linking, if an unavailable function is used. There is no version check included in this library. For an example of such version check, see the feature definition of sd-id128.
FFI binding for sd-id128 as defined in libsystemd used in sd-id128
FFI mapping for sd-journal as defined in libsystemd used in sd-journal