#ifdef vs #if for feature checks

[Christian Lohmaier]

Hi Tor, *,

On Tue, Mar 19, 2013 at 6:51 AM, Tor Lillqvist <tml at iki.fi> wrote:
>> otoh, #pragma once is supported by all the compiler we use isn't it ?
>
> Excellent! Let's do that, unless somebody comes up with a
> counter-argument in a week or so.

This doesn't help when the same file is used from two different
locations, let's say from solver and the module (should not happen,
but...)

ciao
Christian