At https://github.com/twall/jna/blob/master/src/com/sun/jna/NativeLibrary.java#L260

instead of:

handle = Native.open(embedded.getAbsolutePath());

it should probably be:

handle = Native.open(embedded.getAbsolutePath(), openFlags);