[Qt-interest] Detecting size of datatype with qmake

[Robert Hairgrove]

Nikos Chantziaras wrote:
> On 05/16/2010 10:00 AM, Esben Mose Hansen wrote:
>> On Sunday 16 May 2010 04:47:32 Nikos Chantziaras wrote:
>>> Is there a way I could detect the size of datatypes like 'short' and
>>> 'int' with qmake from within the project file?  I am working with a
>>> header file that needs macros like SIZEOF_SHORT and SIZEOF_INT defined.
>>
>> Why not simply use
>>
>> #define SIZEOF_SHORT sizeof(short)
>> #define SIZEOF_INT sizeof(int)
> 
> Because those macros are used like this:
> 
>   #if SIZEOF_INT == 4
>     typedef int hix_int32;
>   // ...
> 
> and the rest of the code uses hix_int32.

Qt has those types built in, i.e.: qint16, qint32 and qint64 along with 
their unsigned varieties (and many more). Look in the Qt docs and search 
for one of these types which are defined in QGlobal.h.