I am trying to build from sources that sources https://repo1.maven.org/maven2/net/java/dev/jna/jna-platform/5.5.0/ Java Native Access Platform version 5.5.0, and I am getting jna-platform-5.5.0.jar size – 1233K which is much less than https://repo1.maven.org/maven2/net/java/dev/jna/jna-platform/5.5.0/jna-platform-5.5.0.jar. In the same time, the recommended sources Do not produce jna-platform-5.5.0.jar at all. Could you tell me where to get real sources of Java Native Access Platform version 5.5.0 ?