1 files changed, 9 insertions, 0 deletions
diff --git a/libbuild2/config/module.hxx b/libbuild2/config/module.hxx
index 92fed32..543c486 100644
--- a/libbuild2/config/module.hxx
+++ b/libbuild2/config/module.hxx
@@ -173,6 +173,15 @@ namespace build2
         return nullptr;
       }
 
+      void
+      save_environment (const char* var)
+      {
+        saved_environment.insert (var);
+      }
+
+      static void
+      save_environment (scope&, const char*);
+
       config::saved_environment saved_environment;
       strings old_environment;