PR10702: preprocessor conditional for kernel CONFIG_foo

* session.h (kernel_config[]): New session field.
* main.cxx (parse_kernel_config): Populate it.
* parse.cxx (eval_comparison): Use it.
* testsuite/buildok/utrace.stp, testsuite/parseok/kconfig.stp: New tests.
* NEWS, stap.1.in, doc/langref.tex: Mention it.

1 files changed, 1 insertions, 0 deletions

diff --git a/session.h b/session.h
index a2176793..cc13c321 100644
--- a/session.h
+++ b/session.h
@@ -87,6 +87,7 @@ struct systemtap_session
   std::string kernel_release;
   std::string kernel_base_release;
   std::string kernel_build_tree;
+  std::map<std::string,std::string> kernel_config;
   std::string architecture;
   std::string runtime_path;
   std::string data_path;