This is a spin off of #538 - the arm binaries distributed with JNA are build for armv6l hardfloat. At runtime the ABI needs to be determined and the right binary be loaded:

https://www.raspberrypi.org/forums/viewtopic.php?f=33&t=20873
https://bugs.openjdk.java.net/browse/JDK-8005545
https://blogs.oracle.com/jtc/entry/is_it_armhf_or_armel