kernel-package does not compile linux-kernel-2.6.27

Binary package hint: kernel-package

Trying to compile linux-kernel-2.6.27 ubuntu way using kernel-package-11.001-0.1 in intrepid:
root@mdr:/usr/src/linux# make-kpkg clean
exec debian/rules DEBIAN_REVISION=5:10.Custom clean
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 3: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator

====== making target CLN-common [new prereqs: testdir]======

====== making target CLN-common [new prereqs: ]======
/usr/bin/make -f ./debian/rules real_stamp_clean
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 3: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
make[1]: se ingresa al directorio `/usr/src/linux-2.6.27'
====== making target real_stamp_clean [new prereqs: ]======
running clean
test ! -f scripts/package/builddeb.kpkg-dist || \
          mv -f scripts/package/builddeb.kpkg-dist scripts/package/builddeb
test ! -f scripts/package/Makefile.kpkg-dist || \
          mv -f scripts/package/Makefile.kpkg-dist scripts/package/Makefile
test ! -f .config || cp -pf .config config.precious
test ! -f Makefile || \
            /usr/bin/make ARCH=xen distclean
make[2]: se ingresa al directorio `/usr/src/linux-2.6.27'
Makefile:518: /usr/src/linux-2.6.27/arch/xen/Makefile: No existe el fichero ó directorio
make[2]: *** No hay ninguna regla para construir el objetivo `/usr/src/linux-2.6.27/arch/xen/Makefile'. Alto.
make[2]: se sale del directorio `/usr/src/linux-2.6.27'
make[1]: *** [real_stamp_clean] Error 2
make[1]: se sale del directorio `/usr/src/linux-2.6.27'
make: *** [CLN-common] Error 2
root@mdr:/usr/src/linux#
------------------------------------
root@mdr:/usr/src/linux# make-kpkg --initrd kernel_image kernel_headers
exec debian/rules DEBIAN_REVISION=2.6.27-10.00.Custom INITRD=YES kernel_image kernel_headers
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 3: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator
[: 1: 2: unexpected operator

====== making target CONFIG-common [new prereqs: testdir]======

====== making target debian/stamp-conf [new prereqs: ]======
# work around idiocy in recent kernel versions
test ! -e scripts/package/builddeb || \
            mv -f scripts/package/builddeb scripts/package/builddeb.kpkg-dist
test ! -e scripts/package/Makefile || \
            (mv -f scripts/package/Makefile scripts/package/Makefile.kpkg-dist && \
               (echo "# Dummy file "; echo "help:") > scripts/package/Makefile)
test -d debian || mkdir ./debian
test ! -e stamp-building || rm -f stamp-building
test ! -f ./debian || test -f stamp-debian || test -f debian/official || \
               (rm -rf ./debian && mkdir ./debian)
test -f stamp-debian || \
          ( test -f debian/official && test -f debian/control) || \
    sed -e 's/=V/../g' -e 's/=D/2.6.27-10.00.Custom/g' \
        -e 's/=A/amd64/g' -e 's/=SA//g' \
                -e 's/=L/grub,xen-vm, /g' -e 's/=I/initramfs-tools (>= 0.53) | yaird (>= 0.0.11) | linux-initramfs-tool, /g' \
                -e 's/=CV/./g' \
                -e 's/=M/Unknown Kernel Package Maintainer <email address hidden>/g' \
                -e 's/=ST/linux/g' -e 's/=B/xen/g' \
           /usr/share/kernel-package/Control> debian/control
test -f stamp-debian || test -f debian/official || \
           sed -e 's/=V/../g' -e 's/=D/2.6.27-10.00.Custom/g' \
     -e 's/=A/amd64/g' -e 's/=M/Unknown Kernel Package Maintainer <email address hidden>/g' \
            -e 's/=ST/linux/g' -e 's/=B/xen/g' \
  /usr/share/kernel-package/changelog > debian/changelog
test -f debian/rules || install -p -m 755 /usr/share/kernel-package/rules debian/rules
test -f stamp-debian || test -f debian/official || \
    for file in ChangeLog Control Control.bin86 config templates.in rules; do \
               cp -f /usr/share/kernel-package/$file ./debian/; \
           done
test -f stamp-debian || test -f debian/official || \
    for dir in Config docs examples ruleset scripts pkg po; do \
             cp -af /usr/share/kernel-package/$dir ./debian/; \
           done
echo done > stamp-debian
echo done > debian/stamp-conf
====== making target CONFIG-common [new prereqs: stamp-conf]======
This is kernel package version 11.001-0.1.
====== making target stamp-arch-conf [new prereqs: CONFIG-common]======

====== making target CONFIG-arch [new prereqs: stamp-arch-conf]======
====== making target conf.vars [new prereqs: Makefile .config]======

Makefile:518: /usr/src/linux-2.6.27/arch/xen/Makefile: No existe el fichero ó directorio
make[1]: *** No hay ninguna regla para construir el objetivo `/usr/src/linux-2.6.27/arch/xen/Makefile'. Alto.
make: *** [conf.vars] Error 2
root@mdr:/usr/src/linux#

Thx,

Alberto.