Hi all , i'm trying to build an example of face detection found here https://github.com/tasanakorn/rpi-mmal-demo/tree/develop
to use it with raspberry pi camera module but when i do make i get the following error
In file included from /usr/local/include/opencv2/objdetect.hpp:47:0,
from /usr/local/include/opencv2/objdetect/objdetect.hpp:48,
from /home/pi/opencv-3.0.0/samples/cpp/test/rpi-mmal-demo-develop/opencv_demo.c:12:
/usr/local/include/opencv2/core.hpp:49:4: error: #error core.hpp header must be compiled as C++
In file included from /usr/local/include/opencv2/core.hpp:54:0,
from /usr/local/include/opencv2/objdetect.hpp:47,
from /usr/local/include/opencv2/objdetect/objdetect.hpp:48,
from /home/pi/opencv-3.0.0/samples/cpp/test/rpi-mmal-demo-develop/opencv_demo.c:12:
/usr/local/include/opencv2/core/base.hpp:49:4: error: #error base.hpp header must be compiled as C++
/usr/local/include/opencv2/core/base.hpp:52:19: fatal error: climits: No such file or directory
compilation terminated.
CMakeFiles/mmal_opencv_demo.dir/build.make:54: recipe for target 'CMakeFiles/mmal_opencv_demo.dir/opencv_demo.c.o' failed
make[2]: *** [CMakeFiles/mmal_opencv_demo.dir/opencv_demo.c.o] Error 1
CMakeFiles/Makefile2:95: recipe for target 'CMakeFiles/mmal_opencv_demo.dir/all' failed
make[1]: *** [CMakeFiles/mmal_opencv_demo.dir/all] Error 2
Makefile:72: recipe for target 'all' failed
make: *** [all] Error 2
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