From: Peter Dimov (pdimov_at_[hidden])
Date: 2007-05-02 17:38:03
Andrey Semashev wrote:
> Hello Peter,
>
> Friday, April 27, 2007, 11:29:57 PM, you wrote:
>
>>>> This could be that the test machine is misconfigured, or that
>>>> atomic_count.hpp needs a patch for this version of GCC.
>>>
>>> GCC 4.3 has moved this header into ext/atomicity.h and all of its
>>> functions into namespace __gnu_cxx.
>
>> For GCC 4.1 and above, we need to switch atomic_count and
>> sp_counted_base to
>
>> http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html
>
>> If someone can submit a patch for that I'll incorporate it,
>> otherwise it will happen whenever I find the time to implement and
>> test it myself.
>
> Please note that if the target platform is not supported with these
> extensions, the compiler will generate external function call which
> will most likely result in link errors. For example, I tried to make
> use of them under Cygwin (I was hoping they would do just like
> interlocked functions) and got this problem.
Cygwin works, you just need to compile for 486 or better.