Thanks Ruben, not only do I appreciate your advice about the proper way of
posting questions, but I will also follow your advice about trying
‘stackoverflow’.
Have a good one!
From: Ruben Van Boxem
Sent: Friday, September 06, 2013 4:34 PM
To: [email protected]
Subject: Re: [Mingw-w64-public] #ifndef or #ifdef, that is the dilemma
Op 6-sep.-2013 21:51 schreef "Incongruous" <[email protected]> het
volgende:
>
> Yes, I am using g++.
> __cplusplus is defined in stddef and I have specifically #include(ed) that
> file.
> I hope that this new info will clear things.
> I know that you kids have a better understanding of C++ than me, so I know
> that the answer to this issue lies in this mailing list.
> Thanks for the help.
The macro is not defined in any header, but predefined by the compiler. I would
suggest not doing a silly check for language and instead just choose your
language and stick to it. The only place that warrants this check is in an
interface header or if you're checking for C++11 by the value of this macro.
As an aside (meant only as friendly advice), you might get more direct (not
always more friendly ;-)) answers about C++ questions at stackoverflow.com. I
also linger there. Note that your question as posed here, would have been shot
to bits as it misses several important things:
- A small compilable piece of code showing your issue.
- Your intent, i.e. the bigger picture, which often leads to removing the
problem altogether.
- The exact error message you get when trying to compile your code.
This will help everyone get faster and better solutions to people's problems ;-)
Cheers,
Ruben
>
>
> From: Kai Tietz
> Sent: Friday, September 06, 2013 1:41 AM
> To: [email protected]
> Subject: Re: [Mingw-w64-public] #ifndef or #ifdef, that is the dilemma
>
>
> As you check for "__cpluplus" - which is obviously not defined by compiler by
> default - I would assume you are using c++ :
> ;-)
>
>
>
>
> Am 05.09.2013 23:10 schrieb "Incongruous" <[email protected]>:
>>
>> #ifndef __cpluplus
>> std::cout << "error\n A C++ compiler is required!" << std::endl;
>> return -1;
>> #endif
>> The above snip says, if __cplusplus has not been defined print “bla bla”
>> and return –1. Which means that if I am using __cplusplus it should NOT
>> print anthing, right? So, am I using the C or the C++ compiler? I am really
>> confused.
>>
>> TIA
>>
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