Fwd: help for g++, please

[Nathan Sidwell]

Anton Greil wrote:
> 
> ----------  Weitergeleitete Nachricht  ----------
> 
> Subject: help for g++, please
> Date: Donnerstag, 25. November 2004 17:22
> From: Anton Greil <greil@muc.de>
> To: gcc-help@gcc.gnu.org
> 
> Could you give me please some advices how to update my *C and *h files
> of my C++ programs?
> 
> I coded and run these programs on base of the GNU g++ compiler
> of SuSE Linux 8.0 which I installed just 3 years ago.
> Now I installed SuSE Linux 9.1 where the command "g++ -v" gives:
>   ".... gcc version 3.3.3 (SuSE Linux)".

I guess the older compiler was a 2.95 era one.

> Invoking the new g++ on my old programs (which worked well under the old
> g++ version) creates many and many error messages in connection
> with header files.

you probably are being bitten by the '::std' namespace. in 2.95 it
was an alias for the global namespace, but in 3.3 it is a proper namespace
and the std library resides there.  You'll need to add std:: to
the appropriate types, functions and objects. (or learn about
using directives).  However, there are several other changes that
might be affecting your code, but we can't help without examples.

> Is there an information which concerns the changings in header files
> (and perhaps some other new conventions) since 2001 which I should
> apply that I can run my programs again?
You should probably read the release notes for gcc's version 3.0 onwards.

> What about the actual C++ ISO standard and its realization by g++ ?
3.3 is more conformant than previous versions.

> What about please further developments in C++ ? Is there a web-site for
> this question?
> Where can I download please a corresponding C++ manual ?
The C++ standard is available electronically from ANSI.  C++ books
are available at a good bookstore -- I'm sure google can help you
find recommended lists.

nathan

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