This is allowed only when policy CMP0079 is set to NEW.

Dear guys,

I met a problem in cmake.

CMake Error at ../../middleware/open_source/lwip/CMakeLists.txt:35 (target_link_libraries):
  Attempt to add link library "middleware__lwipcore" to target "unsc_rtos"
  which is not built in this directory.

    This is allowed only when policy CMP0079 is set to NEW.

As error clue, tried to use policy.

cmake_policy(SET CMP0079 NEW)

But new issue comes. This library will be building always even if there is not any change in source codes.

Thanks!

Best Regards, Bub Wei