Servus,
i want to share my PKGBUILD for the Zulu® Embedded JDK from Azul Systems.
From there Homepage https://www.azul.com/: Zulu Embedded is a certified build of OpenJDK that is fully compliant with the Java SE standard.
Zulu is copyrighted software based on OpenJDK (http://openjdk.java.net/) and is 100% open source.
I use the package 'jre8-ezdk-headless' from the PKGBUILD as my default JRE to run my openhab installation on my cubietruck. The JRE from openjdk was to slow, 15min for startup openhab and 10min to install a binding . With Zulu Embedded openhab runs very smooth .
You can find the PKGBUILD here: https://github.com/vitalogy/myPKGBUILDs/tree/master/java8-ezdk
Grüsse
MichaeL