[LLVMdev] Status of blocks runtime in compiler-rt?

Jordan K. Hubbard jkh at apple.com
Tue Sep 15 15:58:27 PDT 2009

Hi folks,

So, various folks are in the process of porting Grand Central Dispatch  
to FreeBSD (c.f. http://libdispatch.macosforge.org and http://lists.macosforge.org/pipermail/libdispatch-dev 
  for mailing list discussion on the topic) and are making good  
progress, but one of the issues they're running into is support for  
Blocks in FreeBSD.

On the one hand, they could try and back-port the gcc changes from http://www.opensource.apple.com/source/gcc/gcc-5646 
  and solve the problem that way or, on the other hand, they could  
just continue FreeBSD's inexorable march towards Clang and get the  
blocks support as part of compiler-rt.  The only problem seems to be  
that the build support for Blocks in compiler-rt isn't wired up yet,  
which came as something of a surprise to all involved given that  
people have been talking about Clang and Blocks since this summer.

Is there a roadmap for this anywhere that we can read?  If this simply  
has not been done due to a lack of resources, the GCD porting folks  
could perhaps help move this along, assuming they had appropriate  
access to the bits.


- Jordan

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