I wish to write my own program I'm using GDB so I'm writing using visual studio

my remote path is /tmp/VisualGDB/$(ProjectDirUnixStyle)

I include directories /usr/include;/usr/local/include
end library directories /lib;/usr/lib;/usr/local/lib
so i get errors At the time of compiling

on undefined reference to `rc_set_motor_brake_all’
According to my understanding I need

C file with a function
But I did not find a file with the function definition

Thanks for the help