the symlink of /lib/modules/2.4.17-12mdk/build seems to be dead:
$ cd /lib/modules/2.4.17-12mdk/
$ ls -l
total 328
drwxr-xr-x 2 root root 4096 Jan 31 08:43 alsa/
lrwxrwxrwx 1 root root 35 Jan 31 08:43 *build ->
/home/quintela/rpm/2417/BUILD/linux*
drwxr-xr-x 7 root root 4096 Jan 31 08:43 kernel/
-rw-r--r-- 1 root root 133383 Jan 31 18:39 modules.dep
-rw-r--r-- 1 root root 31 Jan 31 18:39
modules.generic_string
-rw-r--r-- 1 root root 147 Jan 31 18:39 modules.ieee1394map
-rw-r--r-- 1 root root 8257 Jan 31 18:39 modules.isapnpmap
-rw-r--r-- 1 root root 29 Jan 31 18:39 modules.parportmap
-rw-r--r-- 1 root root 54685 Jan 31 18:39 modules.pcimap
-rw-r--r-- 1 root root 24 Jan 31 18:39 modules.pnpbiosmap
-rw-r--r-- 1 root root 89113 Jan 31 18:39 modules.usbmap
drwxr-xr-x 2 root root 4096 Jan 31 08:43 pcmcia/
