> I was wondering if it would be possible to allow the override the > definition of MACHINE_ARCH /__MACHINE_ARCH in amd64/param.h by wrapping > them around ifndef statement. > > Index: sys/arch/amd64/include/param.h > =================================================================== > RCS file: /cvs/src/sys/arch/amd64/include/param.h,v > retrieving revision 1.22 > diff -u -p -u -r1.22 param.h > --- sys/arch/amd64/include/param.h 26 Mar 2013 05:04:10 -0000 1.22 > +++ sys/arch/amd64/include/param.h 12 Oct 2015 15:17:03 -0000 > @@ -45,8 +45,12 @@ > > #define _MACHINE amd64 > #define MACHINE "amd64" > +#ifndef _MACHINE_ARCH > #define _MACHINE_ARCH amd64 > +#endif > +#ifndef MACHINE_ARCH > #define MACHINE_ARCH "amd64" > +#endif > #define MID_MACHINE MID_AMD64 > > #define PAGE_SHIFT 12 > > Being able to override is useful in scenarios where you group arch name > variants under a common alias, at the moment using such a mechanism > fails under OpenBSD/amd64 as whatever is passed in during build time is > overwritten by the inclusion of <sys/param.h>.
That makes absolutely no sense. I don't see any purpose to this. You have failed to explain the usage case; I don't believe there is any scenario where people benefit from more architecture divergence.
