Add opencv to cmake

3rdparty/CMakeLists.txt

@@ -344,7 +344,7 @@ add_subdirectory(miniupnp EXCLUDE_FROM_ALL)
 add_subdirectory(rtmidi EXCLUDE_FROM_ALL)
 
 # OPENCV
-# TODO: add library and -DHAVE_OPENCV
+add_subdirectory(opencv EXCLUDE_FROM_ALL)
 
 # add nice ALIAS targets for ease of use
 if(USE_SYSTEM_LIBUSB)
@@ -376,3 +376,4 @@ add_library(3rdparty::soundtouch ALIAS soundtouch)
 add_library(3rdparty::sdl2 ALIAS ${SDL2_TARGET})
 add_library(3rdparty::miniupnpc ALIAS libminiupnpc-static)
 add_library(3rdparty::rtmidi ALIAS rtmidi)
+add_library(3rdparty::opencv ALIAS ${OPENCV_TARGET})

3rdparty/opencv/CMakeLists.txt

@@ -0,0 +1,21 @@
+# OpenCV
+
+set(OPENCV_TARGET 3rdparty_dummy_lib PARENT_SCOPE)
+
+if (USE_SYSTEM_OPENCV)
+	message(STATUS "RPCS3: using system OpenCV")
+	find_package(OpenCV)
+	
+	if(OPENCV_FOUND)
+		message(STATUS "RPCS3: found system OpenCV")
+		include_directories(${OpenCV_INCLUDE_DIRS})
+		add_library(3rdparty_opencv INTERFACE)
+		target_link_libraries(3rdparty_opencv INTERFACE ${OpenCV_LIBS})
+		target_compile_definitions(3rdparty_opencv INTERFACE -DHAVE_OPENCV)
+		set(OPENCV_TARGET 3rdparty_opencv PARENT_SCOPE)
+	else()
+		message(WARNING "RPCS3: OpenCV not found. Building without OpenCV support")
+	endif()
+else()
+	message(WARNING "RPCS3: Building without OpenCV support")
+endif()