'ext/atomicity.h' file not found

I get the below error during compilation
Error:(74, 16) ‘ext/atomicity.h’ file not found in the below file
/home/baskaran/OpenFramework/Homedwlnd/of_v0.9.8_android_release/addons/ofxOpenCv/libs/opencv/include/opencv2/core/operations.hpp

Thanks in Advance