Re: C preprocessor macro
Re: C preprocessor macro
- Subject: Re: C preprocessor macro
- From: Brian Smith <email@hidden>
- Date: Sun, 11 Sep 2005 09:05:35 +0800
Hi Marc,
From the c99 standard there is __STDC__ which might be more
appropriate. This is intended to indicate conformance so depending
on the conformance of other compliers or if you have set the compiler
to a non-conforming mode this may not be set. I'm not sure you will
find anything completely reliable so it will have to be tested on
different platforms and compilers.
Brian
On Sep 11, 2005, at 4:46 AM, Marc Poirier wrote:
This is a bit off-topic since it is not Xcode-specific, but I'm
having trouble finding an answer so I thought I'd try here...
Is there a standard macro defined by C preprocessors that says,
"Hello, I am a C preprocessor"? Kinda like there is __cplusplus
for C++ preprocessors, I'm wondering if there is something like
that for plain C. I have a header file that is included by some C
files, some C++ files, and resource files, so I need to block out C-
specific code so that Rez doesn't choke on it. Currently what I've
found (and what I'm checking for) is __STDC_HOSTED__ which is
defined (albeit sometimes as 0) by all C preprocessors that I've
tried, though from what I've read about it, may not be defined by
some C preprocessors in lower-than-C99 mode? So I'm wondering if
this is a good choice or if there's a better and fully reliable
macro to check.
thanks,
Marc
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