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Date: Mon, 7 Feb 2011 18:54:54 +0100
From: Roman Divacky <rdivacky@freebsd.org>
To: Gerald Pfeifer <gerald@pfeifer.com>
Message-ID: <20110207175454.GA52746@freebsd.org>
References: <alpine.LNX.2.00.1102062007490.8943@gerinyyl>
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Cc: "Pedro F. Giffuni" <giffunip@yahoo.com>, David Schultz <das@freebsd.org>,
	freebsd-toolchain@freebsd.org
Subject: Re: -fno-math-errno by default
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should clang follow the same and default to -fno-math-errno
on FreeBSD?

I guess so but I want to be sure, thank you!

roman

On Sun, Feb 06, 2011 at 08:40:41PM +0100, Gerald Pfeifer wrote:
> Pedro kindly made me aware of
> 
>   http://svn.freebsd.org/viewvc/base?view=revision&revision=181538
> 
> where David made -fno-math-errno the default for GCC with the following
> background:
> 
>   Our libm doesn't support the SysV mistake of setting errno, and never 
>   has.  This will need to be fixed upstream in a more generic way, but
>   the changes are somewhat more involved.
> 
> Do I understand correctly that libm on all versions of FreeBSD and on
> all platforms does not set errno, so this should become the default for
> FreeBSD also upstream?
> 
> It would have been nice to report this upstream (and apologies if you
> did and it got missed) and I'll try to raise it there, but wanted to
> get confirmation first.
> 
> Thanks,
> Gerald @FreeBSD.org
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