I can´t compile the Editor oder UE4 Game/Client but SlateViwer works.
Here are the logs:
https://drive.google.com/folderview?id=0B-E3BKmwAl-FVlg0SFNDcDFlSzA&usp=sharing
4.4 cannot be built with clang 3.5 (at least speaking about our - Epic’s - 4.4 branch). You need to downgrade your compiler to 3.3 (skip 3.4 as it is known to be problematic for other reasons).
Will the 4.4 branch sometime support clang 3.5?
Unlikely. Third-party forks of it may add support as changes needed for that aren’t that large though.
Epic master (and thus 4.5 in future) supports clang 3.5.0 on Linux.
Could you update the UE wiki with a mapping table of unreal engine and clang releases. Also, in your wiki you’re linking to the currently supported clang version that’s stored in your CDN. Maybe add the download links to the mapping table as well 