I'll answer although I don't know much about gcc4, so this might not be 100%...
gcc4 is a big change (under the hood) from gcc3 with the optimisation logic
totally rewritten. Make sure you try and build with full optimisation set (-O3
I guess).
The new sigmoid version uses SSE4 I think, which is supported in gcc4, this code
isn't checked in yet.
I think you are a bit confused about mixing gcc3 and 4 (or you've confused me),
we only build the one .exe and either compiler will work fine with the existing
gtk dlls.
Jon
Massimiliano Maini wrote:
>
> Hi all,
>
> I can build using gcc 3 or 4.
> I remember somebody (Oystein ?) arguing we should go to gcc4, even if
> there may be some
> issues to work on, since it produces better code 9and it allows using a
> new sigmoid function
> (not sure it's already checked in tough).
>
> My question is: can I put gnubg exes compiled with gcc4 into a gnubg
> installation produced
> with gcc 3 ?
>
> If the answer is yes, I could provide gcc4 exes separately.
>
> MaX.
>
>
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