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From: Martin Strömberg <ams AT ludd DOT ltu DOT se>
Message-Id: <201209111230.q8BCU0rl001296@dexter.ludd.ltu.se>
Subject: Re: Invalid tests for __STDC_VERSION__ in DJGPP header files
To: djgpp-workers AT delorie DOT com
Date: Tue, 11 Sep 2012 14:30:00 +0200 (MEST)
In-Reply-To: <504CD18B.1060207@iki.fi> from "Andris Pavenis" at Sep 09, 2012 08:27:39 PM
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According to Andris Pavenis:
> 
> -_STDC_VERSION__ is not defined in many cases any recent GCC version. It is only seems to be 
> defined in several cases depending on the command line parameter -std and for C language only
...
> As the result tests used in header files like
> 
> #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \
>    || !defined(__STRICT_ANSI__)
> 
> are invalid.

Those tests aren't invalid. They are checking for __STDC_VERSION__ >=
199901L and not __STRICT_ANSI__.

It's possible that old gcc was lying and claiming conformance where it
wasn't.

...

> Use of the broken test for __STDC_VERSION__ prevents libstdc++-v3 (GCC-4.8.0 development versions 
> from some last weeks) building OK due to actual contents of stdint.h being compiled out. Variant 1 

That seems to say that libstdc++-v3 requires standard comliance in the
compiler. How about adding -std=c89/c99/whatever to libstdc++-v3's
compile options?


On the other hand I'm not sure I understand the problem properly so
perhaps I'm totally wrong.


-- 
MartinS