Re: Feature request - a macro defined for GCC

Andrew Haley wrote:
> x z wrote:
>
>> I would like to see that GCC define a macro in the case it is being
>> used to compile a program. Currently there is a __GNUC__ macro
>> defined by the GNU C preprocessor CPP. That does not suit the need.
>> As the CPP Manual says: __GNUC__ is "defined by all GNU compilers
>> that use the C preprocessor". It seems to imply that any (non-GNU)
>> compiler that uses the GNU C preprocessor would also have __GNUC__
>> defined. According to their respective manuals, Intel C++ Compiler
>> and Portable C Compiler also pre-define __GNUC__, possibly because
>> they use the GNU CPP.
>
> They don't use GNU CPP.
>
>> Therefore, the fact that __GNUC__ is defined does not necessarily
>> mean the GCC compiler proper is being used.
>
> I don't think you've thought about this thoroughly.
>
> Any compiler that is not GNU C but defines __GNUC__ is lying to its
> users. If we define __REAL_GNUC__ they'll just define that as well.

Perhaps we could trademark _REAL_HONEST_GNU_CC_ and then sue anyone
who used the trademark (since this would pretty clearly be a case
of trademark dilution I would think!) After all you can't put GUCCI
on your knock off shoe designs :-)
>
> Andrew.