#ifdef vs #if for feature checks

[Jan Holesovsky]

Hi Thomas,

Thomas Arnhold píše v Út 19. 03. 2013 v 05:55 +0100:

> There are some discussions about that on the Internet. Most interesting: 
> Some kind of benchmark comparison at
> 
> http://tinodidriksen.com/2011/08/31/cpp-include-speed/
> 
> Looks like header guards as we have them are the best solution on gcc, 
> but the worst for MSVC and no combination would be acceptable compared 
> to 'plain' header guard with gcc.

That's a good point; so I think the person doing the script should check
the build time of the entire LO with #pragma before pushing, but
otherwise I wouldn't block the change just based on the benchmark - the
benchmark might, or might not be relevant to our scenario :-)

All the best,
Kendy