Fix C/C++ link rule matching ambiguity by seeing-through utility libraries

1 files changed, 5 insertions, 2 deletions

diff --git a/build2/cc/utility.hxx b/build2/cc/utility.hxx
index 82d9f71..bc6c3fb 100644
--- a/build2/cc/utility.hxx
+++ b/build2/cc/utility.hxx
@@ -60,8 +60,11 @@ namespace build2
     // Given the link order return the library member to link. That is, liba{}
     // or libs{} for lib{} and libue{}, libua{} or libus{} for libu*{}.
     //
-    const target&
-    link_member (const bin::libx&, action, linfo);
+    // If existing is true, then only return the member target if it exists
+    // (currently only used and supported for utility libraries).
+    //
+    const target*
+    link_member (const bin::libx&, action, linfo, bool existing = false);
   }
 }