Re: problems compiling NSAnimation.m

[Graham J Lee]

On 10 May 2007, at 13:44, Nicola Pero wrote:

> Sorry, forgot to put the mailing list in Cc:
>
> Thanks
>
>
> > > > > Is there a flag we can pass to ask GCC to refuse c99-isms ?   
> > > > > There must be one.
> > > >
> > > > -std=c89 or -std=gnu89 depending on whether we want to permit  
> > > > GNU C extensions.
>
> Nicola answered:
>
> > Actually, they seem to work -- the problem is that -std=gnu89 is  
> > already the standard, but was changed in GCC 3.0
> > to allow declarations of variables in the middle of code (which  
> > are, in this context, a 'GNU extension' borrowed
> > from c99).
> >
> > I think what we want is
> >
> > -Wdeclaration-after-statement
> >
> > The problems are:
> >
> >  * not sure if that flag is available with GCC 2.95 -- need to  
> > check what happens if you use it with GCC 2.95
> >
> >  * it generates a warning, not an error
> >
> > Anyway, I'll add that flag to the core libs.
> >
> > Thanks

How about -Werror?  That might encourage people to clean up any  
existing mess too ;-).  OTOH it might be a scary amount of mess...

Cheers,

Graham.