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I got this problem when trying to compile opencv using Cmake and mingw.

for Cmake: sourcecode is located in "C:\CPP Libraries\OpenCV-2.4.13\opencv\sources" where the binaries are goint to be build is in: "C:/CPP Libraries/OpenCV-2.4.13/opencv/build/x64/mingw"

I've already used Cmake to generate the makefile.

when i run the makefile:

C:\CPP Libraries\OpenCV-2.4.13\opencv\build\x64\mingw>mingw32-make

this is the output that I get after 31%

[ 31%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_w32.cpp.obj
C:\CPP Libraries\OpenCV-2.4.13\opencv\sources\modules\highgui\src\window_w32.cpp: In function 'int icvCreateTrackbar(const char*, const char*, int*, int, CvTrackbarCallback, CvTrackbarCallback2, void*)':
C:\CPP Libraries\OpenCV-2.4.13\opencv\sources\modules\highgui\src\window_w32.cpp:1853:81: error: 'BTNS_AUTOSIZE' was not declared in this scope
                                         WS_CHILD | CCS_TOP | TBSTYLE_WRAPABLE | BTNS_AUTOSIZE | BTNS_BUTTON,
                                                                                 ^
C:\CPP Libraries\OpenCV-2.4.13\opencv\sources\modules\highgui\src\window_w32.cpp:1853:97: error: 'BTNS_BUTTON' was not declared in this scope
                                         WS_CHILD | CCS_TOP | TBSTYLE_WRAPABLE | BTNS_AUTOSIZE | BTNS_BUTTON,
                                                                                                 ^
modules\highgui\CMakeFiles\opencv_highgui.dir\build.make:187: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_w32.cpp.obj' failed
mingw32-make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_w32.cpp.obj] Error 1
CMakeFiles\Makefile2:2203: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/all' failed
mingw32-make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
Makefile:159: recipe for target 'all' failed
mingw32-make: *** [all] Error 2

Does anyone knows a solution, because i have no clue about this one.