blocks on linux

Hello!

Is there recommended way of using Blocks on Linux (and other non-apple platforms)?

I can compile sources using '-fblocks' but then I need blocks runtime library.
There is BlocksRuntime directory in compiler-rt, but looks like it's not built when building clang.

I used BlocksRuntime download | SourceForge.net project and got libBlocksRuntime.a that seems working.

So what's the status of BlocksRuntime from compiler-rt?
Is it supposed to be build-able anywhere?

Thanks!