Compiling xen-unstable in 32bit chroot on amd64

[Robin van Leeuwen <rvl@ttg-edam.nl>]

I've got two computers here one amd64 3500/2GB/debian-amd64-testing
and a amd-duron-900/512mb/debian-testing.

I've setup a 32-bit chroot on my amd64 and want to
compile xen-unstable in the32 bit enviroment to
run xen on the duron. Because compiling after "make mproper"
on the Duron takes about 2 hours, and on the amd64 about 5
miniutes. I'm stuck on compiling in the 32 bit chroot:

---------------
make[2]: Entering directory `/usr/src/xen-unstable.hg/xen'
make[2]: `include/xen/acm_policy.h' is up to date.
make[2]: Leaving directory `/usr/src/xen-unstable.hg/xen'
[ -e include/asm ] || ln -sf asm-x86 include/asm
make -C arch/x86 asm-offsets.s
make[2]: Entering directory `/usr/src/xen-unstable.hg/xen/arch/x86'
gcc -nostdinc -fno-builtin -fno-common -fno-strict-aliasing -iwithprefix 
include -Wall -Werror -Wno-pointer-arith -pipe 
-I/usr/src/xen-unstable.hg/xen/include 
-I/usr/src/xen-unstable.hg/xen/include/asm-x86/mach-generic 
-I/usr/src/xen-unstable.hg/xen/include/asm-x86/mach-default -O3 
-fomit-frame-pointer -msoft-float -m64 -mno-red-zone -fpic 
-fno-reorder-blocks -fno-asynchronous-unwind-tables -DNDEBUG -DVERBOSE 
-S -o asm-offsets.s x86_64/asm-offsets.c
cc1: sorry, unimplemented: 64-bit mode not compiled in
x86_64/asm-offsets.c: In function `__dummy__':
x86_64/asm-offsets.c:29: error: structure has no member named `r15'
x86_64/asm-offsets.c:30: error: structure has no member named `r14'
x86_64/asm-offsets.c:31: error: structure has no member named `r13'
x86_64/asm-offsets.c:32: error: structure has no member named `r12'
x86_64/asm-offsets.c:33: error: structure has no member named `rbp'
x86_64/asm-offsets.c:34: error: structure has no member named `rbx'
x86_64/asm-offsets.c:35: error: structure has no member named `r11'
x86_64/asm-offsets.c:36: error: structure has no member named `r10'
x86_64/asm-offsets.c:37: error: structure has no member named `r9'
x86_64/asm-offsets.c:38: error: structure has no member named `r8'
x86_64/asm-offsets.c:39: error: structure has no member named `rax'
x86_64/asm-offsets.c:40: error: structure has no member named `rcx'
x86_64/asm-offsets.c:41: error: structure has no member named `rdx'
x86_64/asm-offsets.c:42: error: structure has no member named `rsi'
x86_64/asm-offsets.c:43: error: structure has no member named `rdi'
x86_64/asm-offsets.c:46: error: structure has no member named `rip'
x86_64/asm-offsets.c:49: error: structure has no member named `rsp'
x86_64/asm-offsets.c:64: error: structure has no member named 
`syscall_callback_eip'
make[2]: *** [asm-offsets.s] Error 1
make[2]: Leaving directory `/usr/src/xen-unstable.hg/xen/arch/x86'
make[1]: *** [/usr/src/xen-unstable.hg/xen/xen] Error 2
make[1]: Leaving directory `/usr/src/xen-unstable.hg/xen'
make: *** [xen] Error 2
----------------------

Can sombody help me out?

kind regards,

Robin van Leeuwen