#includes and #defined

[Erich Dollansky]

Hi,

On Fri, 10 Aug 2018 07:53:19 -0600
Warner Losh <imp at bsdimp.com> wrote:

> On Thu, Aug 9, 2018 at 11:51 PM, Erich Dollansky <
> freebsd.ed.lists at sumeritec.com> wrote:  
> 
> > On Fri, 10 Aug 2018 12:40:48 +0800
> > blubee blubeeme <gurenchan at gmail.com> wrote:
> >  
> > >
> > > What about the architecture name is it recommended to use x86_64
> > > or amd64?  
> >
> > my clang reports on an Intel CPU:
> >
> > #define __amd64 1
> > #define __amd64__ 1
> > #define __x86_64 1
> > #define __x86_64__ 1
> >
> > as defined.
> >
> > It reports
> >
> > #define __aarch64__ 1
> >
> > on an 64 bit ARM CPU.
> >  
> 
> 'man 7 arch' will tell you these things:

better late than never.

I still trust a compiler more than the documentation.

Erich