[libcxx] r249738 - Split <ctype.h> out of <cctype>.

[Richard Smith via cfe-commits]

On Thu, Oct 15, 2015 at 11:14 AM, Adrian Prantl <aprantl at apple.com> wrote:

>
> On Oct 14, 2015, at 5:07 PM, Richard Smith <richard at metafoo.co.uk> wrote:
>
> Ack, there are non-modular headers in the Darwin module. =( I seem to
> recall that they're not version-locked to your compiler, so we've got to
> support them as-is?
>
> If we can't turn on local submodule visibility, then we need a module map
> for libc++ that covers all of its headers. I'll look into pruning the
> include path when building a module from an implicitly-loaded module map.
>
>
> The attached patch implements this in the most hacky way; with it I can
> successfully compile the first few hundred files of LLVM.
>

Great, it looks like this plan should work then. What failure do you
eventually hit? Does it look related to these <foo.h> changes?

I'm working on a more refined version of the approach I described earlier;
I'll mail you a patch to test when I have it finished.
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