Building 2.4 kernel modules in 2.6 environment

error occur while running

$ make modules_install
(.............................)
cd /lib/modules/2.4.27-star; \
mkdir -p pcmcia; \
find kernel -path '*/pcmcia/*' -name '*.o' | xargs -i -r ln -sf ../{} pcmcia
if [ -r System.map ]; then /sbin/depmod -ae -F System.map 2.4.27-star; fi
Version requires old depmod, but couldn't run /sbin/depmod.old: No such file or directory
make: *** [_modinst_post] Error 2

can be temporarily fixed by

ln -s /sbin/depmod /sbin/depmod.old

Re: 关于Linux下高版本内核编译低版本内核的问题
FC5(Fedora Core5)下编译内核总结