jon@joshua.haninge.kth.se said:
> destest.o(.text+0x9c): undefined reference to `des_set_key_checked'
> destest.o(.text+0x159): undefined reference to `des_ede3_cbcm_encrypt'
> [...]

Just had this myself. You need to remove some obsolete symlinks:
rm /lib/libdes.*

best regards
Matthias