Native building on Linux using Clang and with support for blocks

[Tilo Prütz]

Hi all,

http://code.google.com/r/tilopruetz-cocotron/source/detail?r=496c7bb6a9b6116b9176a2bd4a97732729d66547 can now be build nativly on Linux using Clang with block support ('-fblocks').

And it's easy as

    cd linux_native; make

Well, almost. You may need a “unistd.h”-patch at <clang-dir>/include and you may need libBlocksRuntime.a in a visible library directory (like /usr/lib).

But these prerequisites are easy to obtain. For details on them see

    http://sources.redhat.com/bugzilla/show_bug.cgi?id=11157

and

    http://stackoverflow.com/questions/2297765/which-libraries-do-you-need-to-link-against-for-a-clang-program-using-blocks

Best Regards

Tilo Prütz

P.S.:

I did not use any code from the existing clang branches which focus on compiling with XCode.

My solutions differ from them. Especially the constant object handling: I removed the whole hack because it is unreliable. As Jens Ayton (the implementor of the hack) stated in http://jens.ayton.se/blag/objc-constant-objects it is also not intended to work with the 64bit runtime. I think he meant the Apple runtime but the statement is true for any “modern” runtime because the implementation relies on runtime implementation details that are not longer exposed.