diff --git a/cpp/purify/CMakeLists.txt b/cpp/purify/CMakeLists.txt
index 024fcbe6..fb9bdfa8 100644
--- a/cpp/purify/CMakeLists.txt
+++ b/cpp/purify/CMakeLists.txt
@@ -9,6 +9,7 @@ function(add_include_dir)
     endif()
   endforeach()
   if(publics)
+    message(STATUS "publics=${publics}")
     target_include_directories(libpurify SYSTEM PUBLIC ${publics})
   endif()
 endfunction()