RTLinux rt_com serial port driver question

["Skipworth, William" <William.Skipworth@msfc.nasa.gov>]

Hello,

I want to use RT Linux to read data from my serial port.  When I try to
insert my RT Linux module into the kernel, I get "unresolved external" error
messages pertaining to my rt_com_read( ) function calls.  This continues to
happen, even though I have the proper header files #included.  Can anyone
tell me what I need to do? 

Thank you.

Bill