Dll Import 할때 lnk2001 에러 났을때 대처

#ifdef __cplusplus
extern "C" {
#endif
#include "zlib.h"
#ifdef __cplusplus
}
#endif

//뭔지는 잘모르것다..이러니깐..
Linking...
TestZLIBDlg.obj : error LNK2001: unresolved external symbol _deflateEnd
TestZLIBDlg.obj : error LNK2001: unresolved external symbol _deflate
TestZLIBDlg.obj : error LNK2001: unresolved external symbol _deflateInit_
Debug/TestZLIB.exe : fatal error LNK1120: 3 unresolved externals
Error executing link.exe.
위 에러났을때... 맨위에 처럼 include 시켜주면 에러안남.