FindFFmpeg.cmake: manages REQUIRED statement

Clement Champetier · Clement Champetier · commit bab28bb0dbfd · 2014-09-09T14:30:34.000+02:00
* If REQUIRED is specified for modules, raise error if a module is not
found.
diff --git a/cmake/FindFFmpeg.cmake b/cmake/FindFFmpeg.cmake
@@ -96,12 +96,16 @@ else()
 		find_component(${COMPONENT} lib${LOWERCOMPONENT} ${LOWERCOMPONENT} lib${LOWERCOMPONENT}/${LOWERCOMPONENT}.h)
 		# If the component is found.
 		if(${COMPONENT}_FOUND)
-			message(STATUS "Required component ${COMPONENT} present.")
+			message(STATUS "Component ${COMPONENT} present.")
 			set(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${${COMPONENT}_LIBRARIES})
 			set(FFMPEG_DEFINITIONS ${FFMPEG_DEFINITIONS} ${${COMPONENT}_DEFINITIONS})
 			list(APPEND FFMPEG_INCLUDE_DIR ${${COMPONENT}_INCLUDE_DIR})
 		else()
-			message(STATUS "Required component ${COMPONENT} missing.")
+			if(FFmpeg_FIND_REQUIRED)
+				message(SEND_ERROR "Error: required component ${COMPONENT} missing.")
+			else()
+				message(STATUS "Warning: component ${COMPONENT} missing.")
+			endif()
 		endif()
 	endforeach()
 
