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Date: Tue, 26 Jan 2016 10:02:00 -0000
Message-ID: <CAFULd4bD7QFtMrK4MBjHb92Vp7fu_N6W94L3gC8Q-4hN3zbh4Q@mail.gmail.com>
Subject: Re: Speedup configure and build with system.h
From: Uros Bizjak <ubizjak@gmail.com>
To: Michael Matz <matz@suse.de>
Cc: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>, Richard Biener <rguenther@suse.de>
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On Mon, Jan 25, 2016 at 2:53 PM, Michael Matz <matz@suse.de> wrote:
> Hi,
>
> On Mon, 25 Jan 2016, Uros Bizjak wrote:
>
>> This patch caused bootstrap failure on non-c++11 bootstrap compiler
>> [1], e.g. CentOS 5.11.
>>
>> The problem is with std::swap, which was defined in header <algorithm>
>> until c++11 [2].
>>
>> [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69464
>> [2] http://en.cppreference.com/w/cpp/algorithm/swap
>
> Meh.  Can you try the attached patch with a configure test (it includes
> the generated files)?  It works for me with 4.3.4, and should make your
> build include <algorithm> always.

Yes, this patch works for me and allows bootstrap with gcc-4.1.2 to finish.

Thanks,
Uros.