I haven't looked at the patch.  If this is guarded behind NOT 
LIBCXX_STANDALONE_BUILD checks, then it's probably fine.

> On Oct 4, 2017, at 21:36, Zachary Turner <ztur...@google.com> wrote:
> 
> This doesn’t match up with what beanz said. While I assume Duncan is the 
> final word, can we get some confirmation from beanz that everyone is on the 
> same page?
> 
> (Note that libcxx already uses some of LLVM’s cmake, but it’s behind some NOT 
> LIBCXX_STANDALONE_BUILD checks)
> 
> Assuming the answer remains no, what can we do to make code sharing and reuse 
> easier? There’s clearly a need to reuse certain low level things and not keep 
> reinventing the wheel 
> On Wed, Oct 4, 2017 at 9:22 PM Duncan P. N. Exon Smith <dexonsm...@apple.com 
> <mailto:dexonsm...@apple.com>> wrote:
> Thanks correct.
> 
> > On Oct 4, 2017, at 18:49, Shoaib Meenai via Phabricator via cfe-commits 
> > <cfe-commits@lists.llvm.org <mailto:cfe-commits@lists.llvm.org>> wrote:
> >
> > smeenai added subscribers: zturner, rjmccall.
> > smeenai added a comment.
> >
> > @rjmccall, this adds a libc++ build dependency on LLVM's cmake modules. 
> > There were some issues when @zturner had added a similar dependency for his 
> > work on lit. To confirm, Apple still cares about the use case of building 
> > libc++ without having any LLVM cmake modules available (either from source 
> > or from an LLVM installation), right?
> >
> >
> > https://reviews.llvm.org/D31363 <https://reviews.llvm.org/D31363>
> >
> >
> >
> > _______________________________________________
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> > cfe-commits@lists.llvm.org <mailto:cfe-commits@lists.llvm.org>
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits 
> > <http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits>
> 

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