issue compilation XEN3_DOM0/netbsd

[phipo <phipo.research%orange.fr@localhost>]

Hi,
I've installed NetBSD 7.0 RC3 on bi quad core opteron (amd64), 8 cores.
I want to install Dom0 via XEN but have got issues while compilation !
I read this link it's a french blog but you can translate automatickely 
......
I do this commands :
************************************************************************************************
> # cd /root
> # ftp ftp://ftp.NetBSD.org/pub/pkgsrc/pkgsrc-2011Q2/pkgsrc.tar.gz
> # tar -xzf pkgsrc.tar.gz -C /usr
> # rm pkgsrc.tar.gz
> # cd /root
> # ftp -i ftp://ftp.NetBSD.org/pub/NetBSD/NetBSD-7.0/source/sets/
> ....
> ftp> mget syssrc.tgz
> ftp> exit
> # mkdir /usr/src
> # tar -xzf ./syssrc.tgz -C /
> # rm syssrc.tgz
> # config XEN3_DOM0
> # cd ../compile/XEN3_DOM0
> # make depend
> # make >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>(1) the error of compilation is here <<<<<<<<<<<<<<<<<<<
> # cp netbsd /netbsd-dom0
************************************************************************************************

this is my output of (1) :
> mon/lib/libc/arch/x86_64/string -D_FORTIFY_SOURCE=2 
> -I../../../../external/bsd/ipf 
> -I../../../../external/isc/atheros_hal/dist 
> -I../../../../external/isc/atheros_hal/ic 
> -I../../../../external/bsd/acpica/dist/include  -c vers.c
> :
> #      link  XEN3_DOM0/netbsd
> ld -Map netbsd.map --cref -T 
> ../../../../arch/amd64/conf/kern.ldscript.Xen -Ttext 
> 0xffffffff80100000 -e start -X -o netbsd ${SYSTEM_OBJ} ${EXTRA_OBJ} vers.o
> kern_lwp.o: In function `sysctl_kern_maxlwp':
> kern_lwp.c:(.text+0x43): undefined reference to `maxlwp'
> kern_lwp.c:(.text+0xfd): undefined reference to `maxlwp'
> kern_lwp.o: In function `lwpinit':
> kern_lwp.c:(.text+0x173): undefined reference to `maxlwp'
> kern_proc.o: In function `proc0_init':
> kern_proc.c:(.text+0x5bb): undefined reference to `maxlwp'
> kern_resource.o: In function `dosetrlimit':
> kern_resource.c:(.text+0x267c): undefined reference to `maxlwp'
> kern_resource.o:kern_resource.c:(.text+0x268d): more undefined 
> references to `maxlwp' follow
> *** Error code 1
>
> Stop.
> make: stopped in /usr/src/sys/arch/amd64/compile/XEN3_DOM0
> dct-pegasus#
I think that error is about `maxlwp' variable ...

Regards
Philippe