I think the command is expecting /lib/modules/<2.6.xx.xx>/build to be symlinked back to the kernel source, eg:
/lib/modules/2.6.26-tinycore/build --> /usr/src/linux-2.6.26
I would also have expected 'pwd' to be $PWD, but maybe not in this context...
You're correct on both counts. Next, we need to modprobe modprobe ieee80211_crypt_tkip, which we don't have. I see ieee80211_crypte_tkip files in my kernel source folder, but don't know how to make them available for a modprobe. (roberts said this was a simple compile??)
/mnt/hda3/src/linux-2.6.26/net/ieee80211/ieee80211_crypt_tkip.o
/mnt/hda3/src/linux-2.6.26/net/ieee80211/ieee80211_crypt_tkip.mod.c
/mnt/hda3/src/linux-2.6.26/net/ieee80211/ieee80211_crypt_tkip.mod.o
/mnt/hda3/src/linux-2.6.26/net/ieee80211/ieee80211_crypt_tkip.ko
/mnt/hda3/src/linux-2.6.26/.tmp_versions/ieee80211_crypt_tkip.mod