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References: <CAJygYd3KQEhdFBAYO4ONumf=FMvjH1fuiqa4b2F0XGLPBNv2Hw AT mail DOT gmail DOT com> <52815780 DOT 2010006 AT gmail DOT com> <528159F8 DOT 2070307 AT gmail DOT com> <CAJygYd2H7tyjE73=EK2hdo2ZPvWtziU8sUkbgbo5crBtP3JRHQ AT mail DOT gmail DOT com>
From: Yucong Sun <sunyucong AT gmail DOT com>
Date: Mon, 11 Nov 2013 18:33:38 -0800
Message-ID: <CAJygYd2UqXD3e-iguMUB1FUNDmCVmC5D7b1=zHqMVs1kJ8-+qw@mail.gmail.com>
Subject: Re: C++11 program link failure under GCC 4.8.2-1
To: cygwin <cygwin AT cygwin DOT com>
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I've tried on both 32bit and 64bit clean cygwin install, the result is
same. Something is wrong with cygwin's gcc.

my configure script by default uses g++ --std=c++11, this still have
problem of " no snprintf " , after I replace all snprintf() with
sprintf() , I've met the same linkage problem again.

g++ --std=gnu++0x "fixes" the snprintf problem, but it still have same
linkage problem.

Any help will be much appreciated.

Cheers.

On Mon, Nov 11, 2013 at 3:37 PM, Yucong Sun <sunyucong AT gmail DOT com> wrote:
> Yes, the sha1 matches.
>
> sunyc AT sunyc-wks /lib/gcc/i686-pc-cygwin/4.8.2
> $ sha1sum.exe libstdc++.*
> f4dfadfddade3aceaf4852cd5db31372ab7ef0d1 *libstdc++.a
> 963e2a697c3a1a7d036d975b07f4c408bbd1cb2d *libstdc++.dll.a
>
> Also I couldn't find GLIB_xxx version number in libstdc++.a
>
> sunyc AT sunyc-wks /lib/gcc/i686-pc-cygwin/4.8.2
> $ strings.exe libstdc++.a | grep GLIB
> GLIBCXX_FORCE_NEW
> GLIBCXX_FORCE_NEW
> GLIBCXX_DEBUG_MESSAGE_LENGTH
>
> Cheers.
>
> On Mon, Nov 11, 2013 at 2:28 PM, JonY <10walls AT gmail DOT com> wrote:
>> On 11/12/2013 06:17, JonY wrote:
>>> On 11/12/2013 05:17, Yucong Sun wrote:
>>>> Hi,
>>>>
>>>> I'm trying to compile a program under cygwin with latest gcc 4.8.2,
>>>> the program compiles fine, but link failed. I'm suspecting this has
>>>> something todo with libstdc++ but I couldn't find any document on how
>>>> to check libstdc++ version (cygwin setup claim it is version 4.8.2
>>>> already).
>>>>
>>>
>>> I'm not sure either, could you ask gcc-help instead?
>>>
>>>
>>
>> 963e2a697c3a1a7d036d975b07f4c408bbd1cb2d *libstdc++.dll.a
>> f4dfadfddade3aceaf4852cd5db31372ab7ef0d1 *libstdc++.a
>>
>> Is your sha1sum matching mine for 4.8.2?
>>
>>

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