Re: libgmp: duplicate symbol

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

On 14.12.12 16:41, Christoph Egger wrote:
>>On 14.12.12 14:46, David Laight wrote:

>>
>>> On Fri, Dec 14, 2012 at 11:11:16AM +0100, Christoph Egger wrote:
>>>>> On Thu, Dec 13, 2012 at 09:42:29PM +0100, Christoph Egger wrote:
>>>>>> Do you think upstream would accept this?
>>>>>
>>>>> Ask them?
>>> ...
>>>>   #ifdef __GNUC__
>>>> -#if (defined __GNUC_STDC_INLINE__) || (__GNUC__ == 4&&  __GNUC_MINOR__ == 
>>>> 2)
>>>> +#if (defined __GNUC_STDC_INLINE__) || \
>>>> +    (__GNUC__ == 4 &&  __GNUC_MINOR__>= 2) || (__GNUC__>  4)
>>>
>>> Isn't there a define that is (__GNUC__ * 1000 + __GNUC_MINOR__) ?
>>> or similar - for those sorts of checks.
> 
> __GNUC_PREREQ__(M, m)


This is not a compiler-define. We define it ourself in sys/sys/cdefs.h.
Using __GNUC_PREREQ__ and building a toolchain on OSX fails in libgmp's 
configure:

checking size of mp_limb_t... 0
configure: error: Oops, mp_limb_t doesn't seem to work

But using compiler-define's above only work.

Christoph