From 5058b155076b004f4abf21be6cf657a3f2cc4d1b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 20 Aug 2017 15:56:26 +0200
Subject: Add support for not cleaning generated version file

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

(limited to 'build2/version/rule.cxx')

diff --git a/build2/version/rule.cxx b/build2/version/rule.cxx
index a9d62ba..3c9723e 100644
--- a/build2/version/rule.cxx
+++ b/build2/version/rule.cxx
@@ -81,6 +81,11 @@ namespace build2
     {
       doc& t (static_cast<doc&> (xt));
 
+      // If this is clean check if we were asked not to remove it.
+      //
+      if (a == perform_clean_id && !cast_true<bool> (t[var_clean]))
+        return noop_recipe;
+
       // Derive the file name.
       //
       t.derive_path ();
-- 
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