[root@/usr/src/asterisk] ~ cd dahdi-linux-complete-2.6.2+2.6.2
[root@/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2] ~ make all
make -C linux all
make[1]: Entering directory `/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2/linux'
make -C drivers/dahdi/firmware firmware-loaders
make[2]: Entering directory `/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2/linux/drivers/dahdi/firmware'
make[2]: Leaving directory `/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2/linux/drivers/dahdi/firmware'
You do not appear to have the sources for the 2.6.21.7-2.ec2.v1.2.fc8xen kernel installed.
make[1]: *** [modules] Error 1
make[1]: Leaving directory `/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2/linux'
make: *** [all] Error 2
[root@/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2] ~ uname -r
2.6.21.7-2.ec2.v1.2.fc8xen
[root@/usr/src/asterisk/dahdi-linux-complete-2.6.2+2.6.2] ~