fixes #4860
@ -197,7 +197,7 @@ if (X11_FOUND AND XSS_FOUND)
endif()
if (PLATFORM_EXTENSIONS)
if (${APPLE_EXT} OR ${X11_EXT})
if (${APPLE_EXT} OR ${X11_EXT} OR WIN32)
add_definitions(
-DQTOX_PLATFORM_EXT
)