[Bluez-devel] compile the blueZ stack

1. is there the only way to compile the blueZ stack with linux kernel？
2. how to use the blueZ with HF profile？ 
 when adding a sco connet from HF to AG, AG reject the connection request, 
the errorcode is 0x0e，due to the security reason。i check the hci code, 
it sames that blueZ use the HV1 packet for sco? how can i modify it to 
HV3? modify the code and compile the whole kernel? 

3x