Set cmake policy CMP0054 NEW

meaning in IF("A") cmake will not expand the value of the variable A

CMakeLists.txt

@@ -31,6 +31,9 @@ IF(CMAKE_VERSION VERSION_EQUAL "3.0.0" OR
  CMAKE_POLICY(SET CMP0045 OLD)
  CMAKE_POLICY(SET CMP0042 OLD)
 ENDIF()
+IF(POLICY CMP0054)
+  CMAKE_POLICY(SET CMP0054 NEW)
+ENDIF()
 
 MESSAGE(STATUS "Running cmake version ${CMAKE_VERSION}")