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From: "Dave Korn" <dave DOT korn AT artimi DOT com>
To: "'Aaron Gray'" <angray AT beeb DOT net>, <cygwin AT cygwin DOT com>
Cc: "'GCC'" <gcc AT gcc DOT gnu DOT org>
References: <2b2c01c78fa5$d94a27c0$0200a8c0 AT AMD2500> <01f001c78fc6$c916ce00$2e08a8c0 AT CAM DOT ARTIMI DOT COM> <005501c78fe3$b1a9ec80$0200a8c0 AT AMD2500>
Subject: RE: Successful build of GCC 4.2.0 RC3 on latest Cygwin snapshot 20070427
Date: Sun, 6 May 2007 15:54:26 +0100
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On 06 May 2007 14:37, Aaron Gray wrote:

> On the LLVM build I am getting multiple :-
> 
>     warning: visibility attribute not supported in this configuration;
> ignored
> 
> with the same line number, eight or so in some cases but usually two.
> 
> Have not looked into this properly yet, I missed it earlier when first
> building but on rebuilding have captured it in a log file for thurther
> examination.

  IIUIC, the visibility attribute is only relevant to ELF targets, which
cygwin is not.  Hence the warnings, while seemingly redundant, are at least
accurate[*].  The visibility attribute needs wrapped in a macro that can be
undef'd on non-ELF systems.

> I can put together a test example if required.

  If you can produce once that shows excess warnings being emitted, yes, that
would be worth filing a PR.  Hmm, a quick test I couldn't get excess ones, but
the line numbers all look wrong..

    cheers,
      DaveK

[*] - and without seeing the actual code I don't even know that there aren't
that many attributed decls on the same line...
-- 
Can't think of a witty .sigline today....


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