Can't run Eclipse from /opt

Question

I'm playing with Arch x64, and I downloaded the Eclipse Juno platform without any plugins etc. I extracted it into /opt, made a launcher on my desktop, and when it runs, it produces this error message:

This is the log

JDK 1.6 is also installed in /opt, and the bin for JDK and JRE are added into PATH

From the log, it seems that Eclipse is loading its plugins from .eclipse in my /home directory. How do I get it to load from /opt, or its root directory?

Answer 1

Eclipse can't start because it can't find the system library libXtst.so.6:

/home/alex/.eclipse/org.eclipse.platform_4.2.0_1473617060/configuration/org.eclipse.osgi/bundles/154/2/.cp/libswt-pi-gtk-4233.so: libXtst.so.6: cannot open shared object file: No such file or directory

You can resolve this by installing the missing package:

pacman -S libxtst