Keith Harrison wrote:
>
> ----- Original Message -----
> From: Theodore Jump <[EMAIL PROTECTED]>
> To: Eero Pajarre <[EMAIL PROTECTED]>
> Cc: mesa-dev <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
> Sent: Wednesday, October 20, 1999 1:12 PM
> Subject: Re: [Mesa-dev] Major portability problems in latest CVS sources?
>
> >
> > I've been building the mesa CVS stuff every couple days (mesa-for-cpu
> > rendering, mesa-for-3dfx, glu, glut, and all the samples/demos/book
> programs)
> > with MSVC 6 SP3. Now, I've only got MSVC set for Warning Level 3, not 4,
> > because the code base does generate a large amount of warnings under WL4
> > (compilng mesa alone generates over 1000 warnings, I don't know exactly
> how
> > much because 1000 is the limit for my shell's rollback buffer...).
> [snippo]
When this many warnings are being generated, something should be done
to fix them. If we get used to seeing a lot of warnings everytime we
compile Mesa we may someday miss a really important one. Ideally, Mesa
would compile clean without any warnings on all major compilers. That's
probably not realistic but something to strive for.
> I've set up an IDE workspace in VC6 SP3, and MesaCVS builds OK. That's only
> after I put the damn windows header (windows.h) into Mesa's gl.h file,
> though.
>
> What's the story regarding the windows header file? (Brian?) It's alright
> editing my own GL code to add it, but it also means altering third-party
> code to add "windows.h" to it (imagine adding "#include windows.h" to all of
> the Red Book samples - OK you could #if the include, but it still doesn't
> feel right). Have I missed something obvious here?...
Microsoft has the same problem with its gl.h file. It depends upon
windows.h but does not include it. So unfortunately, yes, you do have
to #ifdef/#include "windows.h"/#endif in portable GL programs. But
not when using GLUT since glut.h #includes "windows.h" for you.
In the next version of Mesa, I'd like to create a new glheader.h file
which will be included in the Mesa sources instead of gl.h. glheader.h
will include gl.h and whatever platform-specific headers might be
needed, such as windows.h. Furthermore, it would have any #pragmas
needed for specific environments. Hopefully some of the Windows-specific
stuff can then be removed from Mesa's gl.h file.
-Brian
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