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From: Paul Eggert <eggert@cs.ucla.edu>
To: "Herbert J. Skuhra" <herbert@mailbox.org>
Cc: "C. Baxter" <m43cap@yandex.com>, emacs-devel@gnu.org
Subject: Re: USE_LSB_TAG not supported on this platform
Date: Mon, 8 Feb 2016 17:10:09 -0800	[thread overview]
Message-ID: <56B93C71.6060602@cs.ucla.edu> (raw)
In-Reply-To: <867fie4xj6.wl-herbert@mailbox.org>

On 02/08/2016 03:01 PM, Herbert J. Skuhra wrote:
> GCC 5 works but clang still fails. If I add
>
> #define alignas _Alignas
>
> to src/lisp.h the build succeeds.

Thanks, could you explain why that "#define" is helpful? On my platform 
(Fedora 23 x86-64, clang 3.7.0) clang's <stdalign.h>, which is in 
/usr/lib/clang/3.7.0/include/stdalign.h, contains this:

#ifndef __cplusplus
#define alignas _Alignas
#define alignof _Alignof
#endif

and src/lisp.h includes <stdalign.h> before using or checking alignas, 
so there should be no need to add "#define alignas _Alignas" to lisp.h.

Is there a file src/stdalign.h in your build directory? If so, why is it 
there, and why does it not define alignas?

Are you building with clang++?  That might explain the situation, but 
why would clang++ be needed?



  reply	other threads:[~2016-02-09  1:10 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-04  8:32 USE_LSB_TAG not supported on this platform C. Baxter
2016-02-04 13:24 ` Stefan Monnier
2016-02-04 15:51 ` Paul Eggert
2016-02-04 22:29 ` Herbert J. Skuhra
2016-02-05  1:22   ` Paul Eggert
2016-02-05  9:45     ` Colin Baxter
2016-02-06 10:55     ` Herbert J. Skuhra
2016-02-06 16:04       ` Herbert J. Skuhra
2016-02-07 15:11         ` Wolfgang Jenkner
2016-02-07 19:14           ` Herbert J. Skuhra
2016-02-07 21:35           ` Herbert J. Skuhra
2016-02-08 19:45             ` Paul Eggert
2016-02-08 20:14               ` Eli Zaretskii
2016-02-09  8:39                 ` Paul Eggert
2016-02-09 16:59                   ` Eli Zaretskii
2016-02-09 17:37                     ` Paul Eggert
2016-02-09 18:02                       ` Eli Zaretskii
2016-02-10 19:29                         ` Colin Baxter
2016-02-08 23:01               ` Herbert J. Skuhra
2016-02-09  1:10                 ` Paul Eggert [this message]
2016-02-09 11:12                   ` Herbert J. Skuhra
2016-02-09 23:37                     ` Paul Eggert
2016-02-09 15:53         ` Wolfgang Jenkner
2016-02-09 23:33         ` Paul Eggert
2016-02-06 20:34       ` Paul Eggert
2016-02-07 16:52         ` Herbert J. Skuhra
2016-02-07 21:34           ` Paul Eggert

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