build all freertos, not able to build net lwip due to lack of sio_open()

examples/device/net_lwip_webserver/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.17)
 
 set(TOP "../../..")
 get_filename_component(TOP "${TOP}" REALPATH)
@@ -9,7 +9,7 @@ if (EXISTS ${TOP}/lib/lwip/src)
     # gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
     family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
 
-    project(${PROJECT})
+    project(${PROJECT} C CXX ASM)
 
     # Checks this example is valid for the family and initializes the project
     family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})