Don't try to test out-of-project prerequisites

1 files changed, 10 insertions, 0 deletions

diff --git a/build2/test/rule b/build2/test/rule
index b915ea7..d1790e0 100644
--- a/build2/test/rule
+++ b/build2/test/rule
@@ -30,6 +30,16 @@ namespace build2
       static target_state
       perform_test (action, target&);
     };
+
+    class alias_rule: public rule
+    {
+    public:
+      virtual recipe
+      apply (action, target&) const override;
+
+      static target_state
+      perform_test (action, target&);
+    };
   }
 }