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Date: Wed, 30 Jul 2008 10:38:53 +0200 From: Sam Ravnborg <sam@...nborg.org> To: Greg Ungerer <gerg@...pgear.com> Cc: linux arch <linux-arch@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: kbuild now support arch/$ARCH/include - time for ARCHs to convert On Wed, Jul 30, 2008 at 04:49:08PM +1000, Greg Ungerer wrote: > Hi Sam, > > Sam Ravnborg wrote: > >The traditional location of the arch specific Makefiles > >has been at: > > > > include/asm-$ARCH > > > >But as suggested by several people over time and lately > >by Linus in the following post: > >http://kerneltrap.org/mailarchive/linux-kernel/2008/5/21/1903924 > > > >is is suggested to move the arch specific files under arch/ > >and for the header files this is arch/$ARCH/include. > > > >So I have hacked up support for this in kbuild so > >for the simpler cases a simple move of header files as > >in: > > git mv include/asm-$ARCH arch/$ARCH/include/asm > > > >is enough. > > > >If Linus will accept it then I think -rc1 is a perfect > >time to do it as people has less stuff pending touching > >the header files that are moved. > >Validation is easy - does the usual configs build? > > > >For the archs that plays games with symlinks this is a > >splendid opportunity to get rid af these. > >The receipe is simple: > >Use > > KBUILD_CFLAGS += -Iarch/$ARCH/include/$CPU > > > >to select the CPU and then do a copy of the header files > >like this: > > > > git mv include/asm-$ARCH/$CPU arch/$ARCH/include/$CPU/cpu > > > >Then the code can continue to use: > > > > #include <cpu/foo.h> > > > >I already converted sparc to use arch/sparc/include - > >while I merged the header files for sparc and sparc64. > >This change is already upstream. > > > >And for SH I posted a receipe which you can read here: > >http://lkml.org/lkml/2008/7/28/83 > > > >It is SH specific but anyway pretty generic. > > > >I am limited in time and resources at the moment but I > >would be glad to help out as time permits should there > >be any questions. > > I just tried moving the include/asm-m68knommu directory > to arch/m68knommu/include/asm and it all worked fine. > Clean compile first go :-) Nice. (As noted > asm-offsets.h was still generated in incldue/asm-m68knommu > afterwards though). > > So what is the status, should I prepare git/patch > for Linus? Yes please do so. Then we can address m68k and fix the breakage that the sparc changes introduced. Sam -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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