cmake HAVE_VIDEO_PROCESSOR_MFT examples

TigerVNC/tigervnc CMakeLists.txt :193 

check_variable_exists(CLSID_VideoProcessorMFT HAVE_VIDEO_PROCESSOR_MFT)

TigerVNC/tigervnc CMakeLists.txt :196 

add_definitions("-DHAVE_VIDEO_PROCESSOR_MFT")