linux-kernel - Re: [PATCH] scripts: kconfig: qconf.cc: fix a compiliation error when using make xconfig

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Message-ID: <20130114005449.GA5499@rak.local>
Date:	Mon, 14 Jan 2013 00:54:49 +0000
From:	Tiana Rakotovao Andriamahefa <rkmahefa@...il.com>
To:	Michal Marek <mmarek@...e.cz>
Cc:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts: kconfig: qconf.cc: fix a compiliation error
 when using make xconfig

Le dimanche 13 janvier 2013 à 09:50:52, Michal Marek a écrit :
> On 13.1.2013 04:28, Tiana Rakotovao Andriamahefa wrote:
> > When using make xconfig, the following compilation error appears :
> >    /usr/include/qt3/qvaluelist.h:427:13: error: ‘ptrdiff_t’ does not name a type
> > Including stddef.h in scripts/kconfig/qconf.cc permits to avoid this error.
> 
> This is a bug in the Qt header. Is Qt3 still maintained?

This seems to be a common c++ issue since the begining of 2011.

Some Qt3 headers use ptrdiff_t which is defined in stddef.h. They also use some 
c++ headers, and rely on them to include stddef.h. However, since GCC-4.6, 
those c++ headers do not include stddef.h anymore. So, include <stddef.h> 
fixes it.

This issue is reported here:  http://gcc.gnu.org/gcc-4.6/porting_to.html?

-- 
Tiana Rakotovao Andriamahefa
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