From 3cf3b73ffc6881d5428a735736a347f6e143b366 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 29 Feb 2016 10:57:40 +0200
Subject: Implement auxiliary dependency database (.d files), use in
 cxx.compile

This is part of the "High Fidelity Build" work.
---
 build2/cxx/utility | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

(limited to 'build2/cxx/utility')

diff --git a/build2/cxx/utility b/build2/cxx/utility
index 7072c7b..307e1b4 100644
--- a/build2/cxx/utility
+++ b/build2/cxx/utility
@@ -10,25 +10,28 @@
 
 #include <build2/target>
 
-#include <build2/config/utility>
-
 namespace build2
 {
   namespace cxx
   {
-    using config::append_options;
-
     // T is either target or scope.
     //
     template <typename T>
     void
-    append_std (cstrings& args, T&, string& storage);
+    append_std (cstrings&, T&, string& storage);
 
-    // Append library options from one of the cxx.export.* variables
+    template <typename T>
+    void
+    hash_std (sha256&, T&);
+
+    // Append or hash library options from one of the cxx.export.* variables
     // recursively, prerequisite libraries first.
     //
     void
-    append_lib_options (cstrings& args, target&, const char* variable);
+    append_lib_options (cstrings&, target&, const char* variable);
+
+    void
+    hash_lib_options (sha256&, target&, const char* variable);
   }
 }
 
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