Compiling DS1302_Example...
Creating E:\study\arduino\build\DS1302_Example\DS1302_Example.ino.cpp.o...
In file included from E:\study\arduino\build\DS1302_Example\DS1302_Example.ino.cpp:9:
D:\Arduino\libraries\DS1302/DS1302.h:31:22: error: WProgram.h: No such file or directory