On Sat, 2004-11-13 at 08:26 +0100, Matthias Klose wrote:
> > `-m32'
> > `-m64'
> > Generate code for a 32-bit or 64-bit environment. The 32-bit
> > environment sets int, long and pointer to 32 bits and generates
> > code that runs on any i386 system. The 64-bit environment sets
> > int to 32 bits and long and pointer to 64 bits and generates code
> > for AMD's x86-64 architecture.
> >
> > It is not clear in the above paragraph whether -m64 implies -march=k8
> > or what. It probably should not... I am not an expert, that's why I
> > went to the manual. Can you please fix it?
>
> GCC never turns something on, which you don't explicitely specify on
> the command line. Not sure how you want the documentation be changed.
> -m64 turns on the common subset for all x86-64 architectures,
> specifying -march=k8 turns on k8/opteron specific features,
> -march=nocona turns on some P4/64 Nocona specific features.
>
Well, there. That's exactly the kind of clarification needed in the
manual. Somewhere in there it should say that.
--
Karl Hegbloom
(o_ mailto:[EMAIL PROTECTED]
//\ jabber:[EMAIL PROTECTED]
V_/_ yahoo:karlheg
