cmake: Add debug output

Author: jorisv

example/CMakeLists.txt

@@ -1,8 +1,10 @@
 function(ADD_WINDOWS_DLL_PATH_TO_TEST TEST_NAME)
   if(WIN32)
     get_test_property(${TEST_NAME} ENVIRONMENT ENV_VARIABLES)
+    message(STATUS "ENV_VAR pre: ${ENV_VARIABLES}")
     list(APPEND ENV_VARIABLES
          "PYCPPAD_WINDOWS_DLL_PATH=$<TARGET_FILE_DIR:${PROJECT_NAME}::${PROJECT_NAME}>")
+    message(STATUS "ENV_VAR post: ${ENV_VARIABLE}")
     set_tests_properties(${TEST_NAME} PROPERTIES ENVIRONMENT "${ENV_VARIABLES}")
   endif()
 endfunction()