On Jan 4, 2016, at 14:10 , Doug Hill <[email protected]> wrote:
> 
> In any case, I don’t totally understand why checking in extra Xcode info 
> would result in out of date PCHs, particularly for system frameworks. It 
> looks to me that Xcode is looking for a version of the cache that doesn’t 
> exist or was rebuilt with a different ID. I’m not sure how I can do anything 
> about this for Xcode.

The question is whether the reference to the non-existing ModuleCache 
subdirectory is in the git repository or not. If it is, for whatever reason, it 
seems like it shouldn’t be there.

If not, the one other thing you can try is deleting the entire ModuleCache 
directory. It’s possible that there’s an out-of-date file in there that Xcode 
trips over when it’s *scanning* that directory the first time you build the 
project, and cleaning the project probably won’t help with that. I seem to 
recall there were a couple of versions of Xcode that complained about 
incompatible precompiled header files, rather than just re-precompiling them, 
so a bug report about this might be in order.

It wasn’t 100% clear from your original post, but it sounds like anyone 
checking out the project has the problem — or is it just you? If it’s happening 
on multiple Macs but complaining about the *same* ID, then that certainly 
points in the direction of something being checked in.

Finally, in the straw-clutching department, take a look at your header and 
framework includes, to see if a funny path has found its way in there at some 
point.

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