From e7daf01b84ee6ae96915390d9e2f3c5defaaf1ca Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 22 Nov 2018 14:41:56 +0200
Subject: Tweak in rule to ensure correct mtime order

---
 build2/in/rule.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/build2/in/rule.cxx b/build2/in/rule.cxx
index 545ded5..7b3904c 100644
--- a/build2/in/rule.cxx
+++ b/build2/in/rule.cxx
@@ -378,7 +378,9 @@ namespace build2
           }
 
           what = "write"; whom = &tp;
-          ofs << s << endl;
+          if (ln != 1)
+            ofs << endl; // See below.
+          ofs << s;
         }
 
         // Close depdb before closing the output file so its mtime is not
@@ -387,6 +389,7 @@ namespace build2
         dd.close ();
 
         what = "close"; whom = &tp;
+        ofs << endl; // Last write to make sure our mtime is older than dd.
         ofs.close ();
         arm.cancel ();
 
-- 
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