Re: [Boost-users] Compile under 32bits but not under 64bits

Subject: Re: [Boost-users] Compile under 32bits but not under 64bits
From: Christian Henning (chhenning_at_[hidden])
Date: 2010-03-18 19:54:21

Hi Juanma,

On Thu, Mar 18, 2010 at 3:14 PM, Juanma Font <juanmafont_at_[hidden]> wrote:
> Hello ¡¡¡
>
>  Probed with boost 1.38 and 1.40 on linux ubuntu karmic
>
>   Example: check64.cpp
>
> ---------------
> #include "check64.hpp"
>
> int main()
>
> {
> point2<int> png_size1(3,4);
> point2<int> png_size2;
>
>
> wxMessageBox( wxT("Reading png dimensions prueba.png "), wxT("Hello") );
>
> // ok, compile into 32bits and 64bits
> png_size2=png_size1;
>
> // ok, compile into 32bits and 64bits
> png_read_dimensions( "prueba.png" );
>
> //ERROR, THIS ONLY COMPILE WITH 32bits
> png_size1 = png_read_dimensions( "prueba.png" );
>
> return 0;
> }

Can you use ptrdiff_t instead of int? If not you might have to define
a custom convert function since png_read_dimensions() returns
point2<ptrdiff_t>. A fix is simple but you might be satisfied with
ptrdiff_t.

Regards,
Christian