Backport of:

  Bug#17894997 CMAKE WARNING WRT INTERFACE_LINK_LIBRARIES
  Bug#17905155 CMAKE WARNING WHEN GENERATING MAKEFILE
  Bug#71089 CMake warning when generating Makefile

Use old policy for LINK_INTERFACE_LIBRARIES.

CMakeLists.txt

@@ -19,6 +19,12 @@ if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" GREATER 2.6)
  CMAKE_POLICY(VERSION 2.8)
 endif()
 
+# We use PROPERTIES LINK_INTERFACE_LIBRARIES. See cmake --help-policy CMP0022
+IF(CMAKE_VERSION VERSION_EQUAL "2.8.12" OR
+   CMAKE_VERSION VERSION_GREATER "2.8.12")
+ CMAKE_POLICY(SET CMP0022 OLD)
+ENDIF()
+
 MESSAGE(STATUS "Running cmake version ${CMAKE_VERSION}")
 
 SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)