Hi!
On 18:59 Mon 24 May , Michael Blizek wrote:
> Hi!
>
> On 22:53 Mon 24 May , Mulyadi Santosa wrote:
> > On Mon, May 24, 2010 at 18:03, Michael Blizek
> > <michi1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > > Hi!
> > >
> > > I have a system with 32 bit userspace and a 64 bit kernel. This runs fine, but
> > > I ran into a problem with user mode linux. The build command "ARCH=um make
> > > linux" builds a 64 bit kernel.
> >
> > How about editing the CC variable in main Makefile and change that to
> > "gcc32" (IIRC, that points to 32 bit version of gcc)?
>
> I do not know what you mean by 32 bit gcc version. Gcc is 32 bit, just as the
> rest of the system except the (host) kernel. However this gcc seems to do a
> cross compilation to 64 bit. Usually you do this by e.g. "ARCH=i386 make
> bzImage" or "ARCH=x86_64 make bzImage", but the ARCH variable must be set to
> um...
>
> -Michi
Changing these lines in the Makefile seems to change to 32 bit mode.
old:
SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -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/sh[234].*/sh/ )
new:
SUBARCH := $(shell echo "i386")
-Michi
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