cmake HAVE_VIDEOIO examples

chsl/PLADE code/3rd_party/opencv/cmake/OpenCVFindLibsVideo.cmake :167 

CHECK_INCLUDE_FILE(sys/videoio.h HAVE_VIDEOIO)

plumonito/dtslam 3rdparty/opencv-git/CMakeLists.txt :911 

elseif(HAVE_VIDEOIO)

plumonito/dtslam 3rdparty/opencv-git/cmake/OpenCVFindLibsVideo.cmake :161 

CHECK_INCLUDE_FILE(sys/videoio.h HAVE_VIDEOIO)

plumonito/dtslam 3rdparty/opencv-git/modules/videoio/CMakeLists.txt :74 

elseif(HAVE_CAMV4L OR HAVE_CAMV4L2 OR HAVE_VIDEOIO)

joachimBurket/esp32-opencv modules/videoio/cmake/detect_v4l.cmake :5 

check_include_file(sys/videoio.h HAVE_VIDEOIO)

joachimBurket/esp32-opencv modules/videoio/cmake/detect_v4l.cmake :13 

list(APPEND defs "HAVE_VIDEOIO")

SsageParuders/Android_Native_Surface my_android_opencv/modules/videoio/cmake/detect_v4l.cmake :5 

check_include_file(sys/videoio.h HAVE_VIDEOIO)

SsageParuders/Android_Native_Surface my_android_opencv/modules/videoio/cmake/detect_v4l.cmake :13 

list(APPEND defs "HAVE_VIDEOIO")