From aa5cd714e60ddd7a6af93576bc3450d1cd9ff3b1 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 4 Jun 2019 23:13:08 +0300
Subject: Fix header dependency generating with Clang

---
 build2/cc/compile-rule.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'build2/cc/compile-rule.cxx')

diff --git a/build2/cc/compile-rule.cxx b/build2/cc/compile-rule.cxx
index 170e358..a957553 100644
--- a/build2/cc/compile-rule.cxx
+++ b/build2/cc/compile-rule.cxx
@@ -2992,7 +2992,7 @@ namespace build2
                   }
 
                   args.push_back ("-MF");
-                  args.push_back (r != nullptr ? r->string ().c_str () : "");
+                  args.push_back (r != nullptr ? r->string ().c_str () : "-");
 
                   sense_diag = (ctype == compiler_type::gcc);
                   gen = args_gen = false;
-- 
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