From 75152526696fc024628796f0633ed695d5ebc49c Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 16 Dec 2016 17:22:28 +0200
Subject: Move exe{} to build2 core, add fallback extensions (existing files)

---
 build2/rule.cxx | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'build2/rule.cxx')

diff --git a/build2/rule.cxx b/build2/rule.cxx
index f9805db..49172a7 100644
--- a/build2/rule.cxx
+++ b/build2/rule.cxx
@@ -57,6 +57,11 @@ namespace build2
           //
           if (pt.path ().empty ())
           {
+            // Since we cannot come up with an extension, ask the target's
+            // derivation function to treat this as prerequisite (just like
+            // in search_existing_file()).
+            //
+            pt.derive_extension (nullptr, true);
             pt.derive_path ();
             ts = pt.mtime ();
           }
-- 
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