fix HAVE_SDL_VIDEO flag of CMakeLists.txt [IOS OR TVOS]
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a6017a..caae4bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1988,6 +1988,7 @@ elseif(APPLE)
set(SDL_IPHONE_LAUNCHSCREEN 1)
file(GLOB UIKITVIDEO_SOURCES ${SDL2_SOURCE_DIR}/src/video/uikit/*.m)
set(SOURCE_FILES ${SOURCE_FILES} ${UIKITVIDEO_SOURCES})
+ set(HAVE_SDL_VIDEO TRUE)
else()
CheckCOCOA()
if(SDL_OPENGL)