Both the above should not effect how binary actually runs, any issues with

Right, my problems do not effect the binary.
> Could anyone build from speed-dreams-src-base-2.1.0rc1-r5781.tar.xz on
> Linux?

I can confirm that rc1 (r5781 derived) sources built OK on Linux (Ubuntu
32bit and 64bit), this is where the Linux Desura packages were made from.

Hmm, it looks even more mysterious then.

Anyone has an idea, why does svn work, and an extracted source file with the svn's cmake folder complains about -lpthreads? Is there any 'secret' cmake cache? Or am I missing some libs/ cmake options, which the svn can work around?