error compile freeswan

thats my problem when i try to compile freeswan:
kernel version 2.2.26

/usr/src/freeswan_2.06/make menumod

the saving of the .config works without any problems, but the compiling
fails with the following errors:

echo "# " >>${FREESWANSRCDIR}/modobj/Makefile
echo "# Local Variables: " >>${FREESWANSRCDIR}/modobj/Makefile
echo "# compile-command: \"make FREESWANSRCDIR=/usr/src/freeswan-2.06 ARCH=i386
TOPDIR=/usr/src/linux KLIPSMODULE=true -f ${KLIPSSRC}/defconfig MODULE_DEF_INC
LUDE=/usr/src/freeswan-2.06/packaging/linus/config-all.h -f Makefile ipsec.o\""
>>${FREESWANSRCDIR}/modobj/Makefile
echo "# End: " >>${FREESWANSRCDIR}/modobj/Makefile
make -C linux/net/ipsec TOPDIR=/usr/src/linux KLIPSMODULE=true -f ${KLIPSSRC}/d
efconfig MODULE_DEF_INCLUDE=/usr/src/freeswan-2.06/packaging/linus/config-all.h
-f Makefile.fs2_4 clean
make[1]: Entering directory `/usr/src/freeswan-2.06/linux/net/ipsec'
make[1]: /defconfig: No such file or directory
make[1]: *** No rule to make target `/defconfig'. Stop.
make[1]: Leaving directory `/usr/src/freeswan-2.06/linux/net/ipsec'
make: [module] Error 2 (ignored)
make -C ${FREESWANSRCDIR}/modobj FREESWANSRCDIR=/usr/src/freeswan-2.06 ARCH=i38
6 KLIPSMODULE=true -f ${KLIPSSRC}/defconfig MODULE_DEF_INCLUDE=/usr/src/freeswa
n-2.06/packaging/linus/config-all.h TOPDIR=/usr/src/linux -f Makefile ipsec.o
make[1]: Entering directory `/usr/src/freeswan-2.06/modobj'
make[1]: /defconfig: No such file or directory
make[1]: *** No rule to make target `/defconfig'. Stop.
make[1]: Leaving directory `/usr/src/freeswan-2.06/modobj'
make: *** [module] Error 2

Thx for your help

Best regards

Kratochvil Jan