cdk bug

[Mukovoz I.S.]

Hello
I am from Russia and I just have started learn C++ for Linux
now i writing configure programm for console i using ncurses
but i would like to use and CDK too. I have some problems.
When i trying to add cdk code into my c++ project - i got following error 
messages
/home/nuclear/work/confv3/src/inputtypeddata.cpp:48: undefined reference to 
`initCDKScreen(_win_st*)' 
*inputtypeddata.o(.text+0x69):/home/nuclear/work/confv3/src/inputtypeddata.cpp:51:
 
undefined reference to `initCDKColor()' 
*inputtypeddata.o(.text+0x9b):/home/nuclear/work/confv3/src/inputtypeddata.cpp:54:
 
undefined reference to `newCDKEntry(SScreen*, int, int, char*, char*, 
unsigned long, unsigned long, EDisplayType, int, int, int, int, int)' 
*inputtypeddata.o(.text+0xf1):/home/nuclear/work/confv3/src/inputtypeddata.cpp:59:
 
undefined reference to `newCDKButtonbox(SScreen*, int, int, int, int, char*, 
int, int, char**, int, unsigned long, int, int)'
....
could you  help me ?