Subj : Re: c include problem
To   : comp.programming
From : Jaspreet
Date : Thu Oct 06 2005 03:53 pm

Uwe Mayer wrote:
> Hi,
>
> I've got a problem with the C programming language. I need to include two
> header files which define constants with identical name.
> This results in a compilation error:
>
> /home/merkosh/src/Smartspace/Development/Infrastructure/sources/sflib/sflib.h:73:
> error: `sf_error' redeclared as different kind of symbol
> /usr/include/sndfile.h:344: error: previous declaration of `sf_error'
>
> How do you handle this in C?
>
> Thanks,
> Uwe
> --

Hi

You could either rename one of the two constants. I would rename the
one in
/home/merkosh/src/Smartspace/Development/Infrastructure/sources/sflib/sflib.h.
Or you could use an #ifndef macro where the constant is defined in this
file.

So if the constant is already defined #ifndef would return false and
would not go into defining the constant again.

Thanks!! and have a nice day!!
Jaspreet

.