https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87243

--- Comment #2 from Jack Howarth <howarth.at.gcc at gmail dot com> ---
(In reply to Iain Sandoe from comment #1)
> I am strongly against making GCC's configure depend on xcrun.  It is quite
> possible that GCC could be used, for example, with PureDarwin - or on
> systems without any Xcode install (using headers built from the OpenSource
> packages).
> 
> So, yes we have to find a solution to finding the headers,
> but no, (at least I don't agree) that trying into yet another tool we don't
> control is that solution.

The problem is finding a mechanism which doesn't use Apple's xcrun yet still
allows you to find the SDK since the location of Xcode.app can change with
renaming and hence the location of the SDK.

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