[llvm-dev] Failed to build libunwind the libcxx's __config header

Dmitry Golovin via llvm-dev llvm-dev at lists.llvm.org
Fri Jun 2 08:35:23 PDT 2017

Hi Tim,

You can find the preprocessed UnwindLevel1.c and UnwindLevel1-gcc-ext.c attached.

I first sent it without compression, so it turned out to be over 100Kb and should be approved first before it can make to the mailing list, so I gzipped the files. Expect to get a duplicate of this message when the first copy gets its approval.


02.06.2017, 18:06, "Tim Northover" <t.p.northover at gmail.com>:
> Hi Dmitry,
> On 2 June 2017 at 07:49, Dmitry Golovin via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>>  Does anyone else have this problem? What can possibly cause such error?
> G++ doesn't support __has_feature, so it should be picking up the
> default "#define __has_feature(__x) 0" further up in __config. The
> preprocessed output (via "-E -dD") would be interesting to diagnose
> the issue, if no-one else has seen it before.
> Cheers.
> Tim.
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