Messages in this thread | | | Date | Fri, 28 May 2010 03:37:00 +0530 | Subject | Re: config automatically switches from 32-bit to 64-bit for x86 | From | Jaswinder Singh Rajput <> |
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Hello Sam,
On Fri, May 28, 2010 at 12:16 AM, Sam Ravnborg <sam@ravnborg.org> wrote: > On Thu, May 27, 2010 at 11:49:16AM -0400, Christoph Hellwig wrote: >> On Thu, May 27, 2010 at 05:37:36AM +0530, Jaswinder Singh Rajput wrote: >> > Hello, >> > >> > I am trying to build 32 bit kernel image on 64-bit machine but after >> > 'make menuconfig' it automatically switches 32-bit to 64-bit. >> > >> > Is this a BUG or did intentionally. >> >> I think it's intentional, but I'm really annoyed by this behaviour. > > The request when we did the merge of 32 and 64 bit was that we > should continue to build 64bit kernels on 64 bit machines. > And likewise for 32bit. > Because this was what the users where used to. > > We could simplify metters by defining new rules. > As you suggest that uname on an intel box always resulted in ARCH=x86. > But then people would complain why a 32 bit kernel is default when > the box is 64 bit. > > Something like this: > [The escape chars align nicely in the patched Makefile] > > Sam > > diff --git a/Makefile b/Makefile > index ebc8225..e7f97a5 100644 > --- a/Makefile > +++ b/Makefile > @@ -161,10 +161,11 @@ export srctree objtree VPATH > # then ARCH is assigned, getting whatever value it gets normally, and > # SUBARCH is subsequently ignored. > > -SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ > - -e s/arm.*/arm/ -e s/sa110/arm/ \ > +SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ > + -e s/sun4u/sparc64/ \ > + -e s/arm.*/arm/ -e s/sa110/arm/ \ > -e s/s390x/s390/ -e s/parisc64/parisc/ \ > - -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ > + -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ > -e s/sh[234].*/sh/ ) > > # Cross compiling and selecting different set of gcc/bin-utils > >
Thanks, this patch fixes the issue. Now 'make menuconfig' is following .config.
Thanks, -- Jaswinder Singh. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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