Xen users - Apr 2006 - make world fails with ASM errors

Hello,

I am trying to build Xen from sources (3.0.1) and make world fails somewhere in
the following with asm errors. The machine I''m installing on does not
have or need SATA support. Any ideas?

[ -e include/asm ] || ln -sf asm-x86 include/asm
make -C arch/x86 asm-offsets.s
make[3]: Entering directory `/home/dmorgan/xen-3.0.1/xen/arch/x86''
gcc -Wdeclaration-after-statement -nostdinc -fno-builtin -fno-common
-fno-strict-aliasing -iwithprefix include -Wall -Werror -Wno-pointer-arith -pipe
-I/home/dmorgan/xen-3.0.1/xen/include
-I/home/dmorgan/xen-3.0.1/xen/include/asm-x86/mach-generic
-I/home/dmorgan/xen-3.0.1/xen/include/asm-x86/mach-default -O3
-fomit-frame-pointer -msoft-float -m32 -march=i686 -DNDEBUG -S -o asm-offsets.s
x86_32/asm-offsets.c
cc1: warnings being treated as errors
In file included from /home/dmorgan/xen-3.0.1/xen/include/asm/mpspec.h:5,
                 from /home/dmorgan/xen-3.0.1/xen/include/asm/smp.h:18,
                 from /home/dmorgan/xen-3.0.1/xen/include/xen/smp.h:13,
                 from /home/dmorgan/xen-3.0.1/xen/include/xen/sched.h:8,
                 from x86_32/asm-offsets.c:9:
/home/dmorgan/xen-3.0.1/xen/include/asm/mpspec_def.h:78: warning: ‘packed’
attribute ignored for field of type ‘unsigned char[5u]’
make[3]: *** [asm-offsets.s] Error 1
make[3]: Leaving directory `/home/dmorgan/xen-3.0.1/xen/arch/x86''
make[2]: *** [/home/dmorgan/xen-3.0.1/xen/xen] Error 2
make[2]: Leaving directory `/home/dmorgan/xen-3.0.1/xen''
make[1]: *** [install-xen] Error 2
make[1]: Leaving directory `/home/dmorgan/xen-3.0.1''
make: *** [world] Error 2

Thanks,
Duncan
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Duncan Morgan <dmorgan <at> gmi-mr.com>
writes:
> cc1: warnings being treated as errors
> In file included from /home/dmorgan/xen-3.0.1/xen/include/asm/mpspec.h:5,
>                  from /home/dmorgan/xen-3.0.1/xen/include/asm/smp.h:18,
>                  from /home/dmorgan/xen-3.0.1/xen/include/xen/smp.h:13,
>                  from /home/dmorgan/xen-3.0.1/xen/include/xen/sched.h:8,
>                  from x86_32/asm-offsets.c:9:
> /home/dmorgan/xen-3.0.1/xen/include/asm/mpspec_def.h:78: warning:
‘packed’
> attribute ignored for field of type ‘unsigned char[5u]’

Hi,

I''ve just come across this error myself and found the following
solution. I''m no
expert by any means but this seems to work ok. I basically followed the
instructions here [http://lkml.org/lkml/2005/12/27/153].

Edit the file: /tmp/xen-3.0.1/xen/include/asm/mpspec_def.h
and change line 78 from:

unsigned char mpc_bustype[6] __attribute((packed));

to:

unsigned char mpc_bustype[6];


All should compile then.
Hope that helps.

--
Andrew Thompson
http://www.downthewire.co.uk


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