Hi again, Carlos.
It's very nice that you've made it work. As you can see, this buildguide link is for debian-based systems (as I remember, X2Go is mostly developed for deb; rpm support is rather little). But in RPM-based systems packages are not the same, so of course it's possible that you need some other dependencies to build X2Go software under such distros.
It would be really good if you collect some notes about all the steps that you did to build from source. I think that buildguide for rpm would be good for wiki.
Hm, googling "build X2Go opensuse" showed me this place: https://build.opensuse.org/project/monitor?blocked=0&building=0&dispatching=0&finished=0&project=X11%3ARemoteDesktop%3Ax2go&scheduled=0&signing=0&succeeded=0 Sad picture.