svn commit: r307689 - head/gnu/lib/libgcc

[Ngie Cooper (yaneurabeya)]

> On Oct 20, 2016, at 14:12, Baptiste Daroussin <bapt at FreeBSD.org> wrote:
> 
> Author: bapt
> Date: Thu Oct 20 21:12:50 2016
> New Revision: 307689
> URL: https://svnweb.freebsd.org/changeset/base/307689
> 
> Log:
>  Fix building of llvm's unwind if gcc has been also built
> 
>  when building gcc an unwind.h header is generate in the cc_tool directory
>  which is included in the CFLAGS before the path where the llvm's unwind.h file
>  lives
> 
>  Reviewed by:	emaste
>  MFC after:	3 days
>  Differential Revision:	https://reviews.freebsd.org/D7357

	This broke the build with clang and was reverted via r307699.
Thanks,
-Ngie
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