Dealing with compilers that pretend to be GCC

[Jonathan Wakely]

2012/1/20 Ludovic Courtès:
>
> Yeah, but it’s a shame that those compilers define __GNUC__ without
> supporting 100% of the GNU C extensions.  With this approach, you would
> also need to add !defined for Clang, PGI, and probably others.

May I politely suggest that this is the wrong place to complain about
other compilers pretending to be GCC :)

If GCC added a __REALLY_GNUC__ macro the other compilers would define
it, for exactly the same reasons they define __GNUC__