Problems compiling kernel 2.6.31

[surreal <firewalrus@gmail.com>]

I am getting some problems while compiling kernel 2.6.31 using Debian Lenny make-kpkg

The messages are - 

make[3]: Entering directory `/root/linux-2.6.31'
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-x86
  CALL    scripts/checksyscalls.sh
  Building modules, stage 2.
  MODPOST 1713 modules
make[3]: Leaving directory `/root/linux-2.6.31'
/usr/bin/make    ARCH=i386 \
                 -C Documentation/lguest
make[3]: Entering directory `/root/linux-2.6.31/Documentation/lguest'
cc -m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include -I../../arch/x86/include -U_FORTIFY_SOURCE    lguest.c   -o lguest
lguest.c:21:25: error: sys/eventfd.h: No such file or directory
lguest.c: In function ‘create_thread’:
lguest.c:1021: warning: implicit declaration of function ‘eventfd’
make[3]: *** [lguest] Error 1
make[3]: Leaving directory `/root/linux-2.6.31/Documentation/lguest'
make[2]: *** [debian/stamp/build/kernel] Error 2
make[2]: Leaving directory `/root/linux-2.6.31'
make[1]: *** [debian/stamp/do-build-arch] Error 2
make[1]: Leaving directory `/root/linux-2.6.31'
dpkg-buildpackage: failure: debian/rules build gave error exit status 2
make: *** [debian/stamp/build/buildpackage] Error 2
root@indiaforce:~/linux-2.6.31# make install
sh /root/linux-2.6.31/arch/x86/boot/install.sh 2.6.31 arch/x86/boot/bzImage \
        System.map "/boot"


Please help.
-- 
Harshad Joshi