Merge pull request BVLC#3221 from BonsaiAI/cmake-forward-compatibility

Endorse CMP0046, CMP0054

CMakeLists.txt

@@ -1,4 +1,10 @@
 cmake_minimum_required(VERSION 2.8.7)
+if(POLICY CMP0046)
+  cmake_policy(SET CMP0046 NEW)
+endif()
+if(POLICY CMP0054)
+  cmake_policy(SET CMP0054 NEW)
+endif()
 
 # ---[ Caffe project
 project(Caffe C CXX)
@@ -67,8 +73,10 @@ add_subdirectory(docs)
 add_custom_target(lint COMMAND ${CMAKE_COMMAND} -P ${PROJECT_SOURCE_DIR}/cmake/lint.cmake)
 
 # ---[ pytest target
-add_custom_target(pytest COMMAND python${python_version} -m unittest discover -s caffe/test WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/python )
-add_dependencies(pytest pycaffe)
+if(BUILD_python)
+  add_custom_target(pytest COMMAND python${python_version} -m unittest discover -s caffe/test WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/python )
+  add_dependencies(pytest pycaffe)
+endif()
 
 # ---[ Configuration summary
 caffe_print_configuration_summary()