--- CMakeLists.txt.orig	2018-05-02 21:05:51.508265000 +0000
+++ CMakeLists.txt	2018-05-02 21:05:54.408309000 +0000
@@ -22,7 +22,7 @@ else()
   link_directories(${OPENCV_PREFIX}/lib)
 endif()
 
-check_include_file_cxx("opencv2/opencv.hpp" HAVE_OPENCV)
+check_include_file_cxx("opencv2/videoio.hpp" HAVE_OPENCV)
 find_library(IMGCODECS_LIBRARY NAMES opencv_imgcodecs opencv_highgui
   HINTS ${OPENCV_PKG_INCLUDE_DIRS} ${OPENCV_PREFIX}/lib)