i am working with ubuntu system , in that FREngine 11 is successfully installed and activated, now i am trying to write a c++ script to call the sdk of ABBYY FREngine , so in reference to it i downloaded the code sample library and trying to run Hello.cpp but getting the following error.

gcc FREngineLoader.cpp 

In file included from FREngineLoader.cpp:11:0:

FREngineLoader.h:14:22: fatal error: FREngine.h: No such file or directory

 #include "FREngine.h"


compilation terminated.


and one more thing wants to know that where can i found all the .h files