Compiling a custom kernel with sound support

[Nathan Bollinger]

        I'm using FreeBSD 4.5-RELEASE and  am trying to compile my kernel with sound support. I follow the handbook about adding the proper device line to the  kernel config file and added the line "device pcm", but when i try to build it with either method listed:

        # /usr/sbin/config MYKERNEL
        # cd ../../compile/MYKERNEL
        # make depend

        or

        # cd /usr/src
        # make buildkernel KERNCONF=MYKERNEL

Both ways stop with the error:

  ../../dev/sound/pcm/channel.h:66: channel_if.h: No such file or directory
  *** Error code 1

What could I do to further diagnosis the problem or fix it?

Thanks for any help,

Nathan