undefined reference to functions in header file

Hi,

I ran into a few functions saying not defined. For example, dwSensorCAN_sendMessage is defined in CAN.h, but I could not locate the corresponding c/cpp file. It will be highly appreciate if anyone can tell me where to find those files.

undefined reference to dwInitialize' undefined reference to dwSAL_initialize’
undefined reference to dwSAL_createSensor' undefined reference to dwSAL_release’
undefined reference to dwRelease' undefined reference to dwLogger_release’
undefined reference to dwSensor_start' undefined reference to dwContext_getCurrentTime’
undefined reference to dwSensorCAN_sendMessage' undefined reference to dwSensor_stop’
undefined reference to dwSAL_releaseSensor' undefined reference to dwSAL_release’
undefined reference to dwRelease' undefined reference to dwLogger_release’

These functions are defined in /usr/local/driveworks/targets/-Linux/lib/libdriveworks.so libraries on your host system. There is no the source code in DRIVE Software.