CMakeList: fix bug when building SDL version for Wayland and using Vu…

…lkan failed

fix hrydgard#16163

CMakeLists.txt

@@ -184,14 +184,13 @@ if(UNIX AND NOT (APPLE OR ANDROID) AND VULKAN)
 	endif()
 
 	# add_definitions(-DVK_USE_PLATFORM_XCB_KHR)
-	if(USE_WAYLAND_WSI)
-		find_package(Wayland)
-		if(NOT WAYLAND_FOUND)
-			message(STATUS "Could not find Wayland libraries, disabling Wayland WSI support for Vulkan.")
-		else()
-			include_directories(${WAYLAND_INCLUDE_DIR})
-			add_definitions(-DVK_USE_PLATFORM_WAYLAND_KHR)
-		endif()
+	find_package(Wayland)
+	if(NOT WAYLAND_FOUND)
+		message(STATUS "Could not find Wayland libraries, disabling Wayland WSI support for Vulkan.")
+	else()
+		include_directories(${WAYLAND_INCLUDE_DIR})
+		add_definitions(-DVK_USE_PLATFORM_WAYLAND_KHR)
+		add_definitions(-DUSE_WAYLAND_WSI=ON)
 	endif()
 
 	if(USE_VULKAN_DISPLAY_KHR)