FreeBSD and Sound

[David]

I tried adding a driver for my onboard-soundcard Yamaha OPL-3-SAx on P200mmx, FreeBSD 4.7-Release.

After reading the manual, I put these 2 entries in MYKERNEL:
(copied from LINT):

 device opl0 at isa? port 0x388
 device pcm

Rebuilt the kernel with:

 config MYKERNEL
 cd ../../compile/MYKERNEL
 make depend
 make
 
Now I get this error message after the make command:


Linking kernel
 isa_compat.o(.data+0x4): undefined reference to `opldriver'
 *** Error code 1

 Stop in /usr/src/sys/compile/MYKERNEL.

Any ideas on how to fix?
Any good references to getting sound  going would be greatly appreciated.

Thanks,
David