From 50e1ffc8f9c48e3e81bd5fa38381193942182df3 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 29 Jun 2018 10:39:26 +0200
Subject: Use depdb to track changes to cli compiler, options, etc

---
 build2/algorithm.cxx | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'build2/algorithm.cxx')

diff --git a/build2/algorithm.cxx b/build2/algorithm.cxx
index 5dc3637..c46e878 100644
--- a/build2/algorithm.cxx
+++ b/build2/algorithm.cxx
@@ -2056,4 +2056,33 @@ namespace build2
     r |= reverse_execute_prerequisites (a, g);
     return r;
   }
+
+  target_state
+  perform_clean_group_depdb (action a, const target& g)
+  {
+    // The same twisted target state merging logic as in clean_extra().
+    //
+    target_state er (target_state::unchanged);
+    path ep;
+
+    group_view gv (g.group_members (a));
+    if (gv.count != 0)
+    {
+      ep = gv.members[0]->as<file> ().path () + ".d";
+
+      if (rmfile (ep, 3))
+        er = target_state::changed;
+    }
+
+    target_state tr (perform_clean_group (a, g));
+
+    if (tr != target_state::changed && er == target_state::changed)
+    {
+      if (verb > (current_diag_noise ? 0 : 1) && verb < 3)
+        text << "rm " << ep;
+    }
+
+    tr |= er;
+    return tr;
+  }
 }
-- 
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