1 files changed, 1 insertions, 0 deletions
diff --git a/session.h b/session.h
index 0a1e6fc4..e6b409cf 100644
--- a/session.h
+++ b/session.h
@@ -81,6 +81,7 @@ struct systemtap_session
   std::vector<std::string> args;
   std::string kernel_release;
   std::string kernel_base_release;
+  std::string kernel_build_tree;
   std::string architecture;
   std::string runtime_path;
   std::string data_path;