issues to compile a kernel

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

Hi,
I working on Bi quad cores opteron (amd64, 8 cores), i want to customize 
my kernel,
i've installed NetBSD 7.0rc3, also i download syssrc.gz and installed it.
When i try to compile tools > like this :
# ./build.sh tools into the directory /usr/src/.
i've got issues, this is my ouput :
-----------------------------------------------------------------------------------------------------
        ^
In file included from /usr/src/sys/fs/msdosfs/msdosfs_fat.c:72:0:
/usr/src/tools/makefs/../../usr.sbin/makefs/ffs/buf.h:78:6: note: 
expected 'int' but argument is of type 'void *'
 int  bread(struct vnode *, daddr_t, int, int, struct buf **);
      ^
/usr/src/sys/fs/msdosfs/msdosfs_fat.c:959:8: error: too many arguments 
to function 'bread'
        NOCRED, 0, &bp);
        ^
In file included from /usr/src/sys/fs/msdosfs/msdosfs_fat.c:72:0:
/usr/src/tools/makefs/../../usr.sbin/makefs/ffs/buf.h:78:6: note: 
declared here
 int  bread(struct vnode *, daddr_t, int, int, struct buf **);
      ^

*** Failed target:  msdosfs_fat.lo
*** Failed command: cc -O -I. 
-I/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/include/nbinclude 
-I/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/include 
-I/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/include/nbinclude 
-I/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/include/compat 
-I/usr/src/tools/compat -DHAVE_NBTOOL_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 
-I/usr/src/tools/makefs/../../usr.sbin/makefs -I/usr/src/sbin/mknod 
-I/usr/src/usr.sbin/mtree -DMAKEFS -I/usr/src/sys/fs/cd9660 
-I/usr/src/sys/ufs/chfs -DV7FS_EI -I/usr/src/sys/fs/v7fs 
-I/usr/src/sbin/newfs_v7fs -I/usr/src/sbin/fsck -DMSDOS_EI 
-I/usr/src/sys/fs/msdosfs -I/usr/src/sbin/newfs_msdos 
-I/usr/src/sys/fs/udf -I/usr/src/sbin/newfs_udf -I/usr/src/sbin/fsck -c 
-o msdosfs_fat.lo.o /usr/src/sys/fs/msdosfs/msdosfs_fat.c
*** Error code 1

Stop.
nbmake[3]: stopped in /usr/src/tools/makefs

*** Failed target:  dependall
*** Failed command: cd "/usr/src/tools/makefs"; 
/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/bin/nbmake realall
*** Error code 1

Stop.
nbmake[2]: stopped in /usr/src/tools/makefs

*** Failed target:  dependall-makefs
*** Failed command: _makedirtarget() { dir="$1"; shift; target="$1"; 
shift; case "${dir}" in /*) this="${dir}/"; real="${dir}" ;; .) this=""; 
real="/usr/src/tools" ;; *) this="${dir}/"; real="/usr/src/tools/${dir}" 
;; esac; show=${this:-.}; echo "${target} ===> ${show%/}${1:+ (with: 
$@)}"; cd "${real}" && 
/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/bin/nbmake _THISDIR_="${this}" 
"$@" ${target}; }; _makedirtarget makefs dependall
*** Error code 1

Stop.
nbmake[1]: stopped in /usr/src/tools

*** Failed target:  build_install
*** Failed command: _makedirtarget() { dir="$1"; shift; target="$1"; 
shift; case "${dir}" in /*) this="${dir}/"; real="${dir}" ;; .) this=""; 
real="/usr/src/tools" ;; *) this="${dir}/"; real="/usr/src/tools/${dir}" 
;; esac; show=${this:-.}; echo "${target} ===> ${show%/}${1:+ (with: 
$@)}"; cd "${real}" && 
/usr/src/obj/tooldir.NetBSD-7.0_RC3-amd64/bin/nbmake _THISDIR_="${this}" 
"$@" ${target}; }; _makedirtarget . dependall-dbsym dependall-mdsetimage 
dependall-asn1_compile dependall-cksum dependall-compile_et dependall-db 
dependall-file dependall-lint1 dependall-slc dependall-makefs
*** Error code 1

Stop.
nbmake: stopped in /usr/src/tools

ERROR: Failed to make build_install in "tools"
*** BUILD ABORTED ***
dct-pegasus#
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Some one can help me ?

Regards
Philippe