From 8276259438592439236341b74300cb5538303c83 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 14 Jul 2015 09:47:40 +0200
Subject: Add notion of strong/weak amalgamation, make strong new clean
 boundary

---
 build/config/operation.cxx | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'build/config')

diff --git a/build/config/operation.cxx b/build/config/operation.cxx
index 57bb60d..48d4d19 100644
--- a/build/config/operation.cxx
+++ b/build/config/operation.cxx
@@ -81,10 +81,9 @@ namespace build
             << "# feel free to edit." << endl
             << "#" << endl;
 
-        auto av = root.vars["amalgamation"];
-        if (av && !av.empty ())
+        if (auto v = root.vars["amalgamation"])
         {
-          const dir_path& d (av.as<const dir_path&> ());
+          const dir_path& d (v.as<const dir_path&> ());
 
           ofs << "# Base configuration inherited from " << d << endl
               << "#" << endl;
-- 
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