Building UE4 On OpenSUSE fails

I attempted to build UE4 on my distro of choice, OpenSUSE, using the following manual build instructions:

However, it fails on building the SlateViewer. At first, i though it was an issue with the version of Mono that’s being used, but the version of Mono that’s installed is 3.8.0. However, without digging too deep into source, the error messages appear to have something to do with some issues matching what platform the build is occurring for. Any ideas?