Tighten unresolved group logic

Now a wildcard/fallback rule should explicitly detect and handle unresolved
situation.

1 files changed, 9 insertions, 1 deletions

diff --git a/build/dist/rule.cxx b/build/dist/rule.cxx
index b5e1185..80e7b05 100644
--- a/build/dist/rule.cxx
+++ b/build/dist/rule.cxx
@@ -26,13 +26,21 @@ namespace build
     {
       const dir_path& out_root (t.root_scope ().out_path ());
 
-      for (prerequisite_member p: group_prerequisite_members (a, t))
+      auto r (group_prerequisite_members (a, t, false));
+      for (auto i (r.begin ()); i != r.end (); ++i)
       {
+        prerequisite_member p (*i);
+
         // Skip prerequisites imported from other projects.
         //
         if (p.proj () != nullptr)
           continue;
 
+        // If we can, go inside see-through groups.
+        //
+        if (p.type ().see_through && i.enter_group ())
+          continue;
+
         target& pt (p.search ());
 
         // Don't match targets that are outside of our project.