graph: load dyndep files

Teach the `-t graph` tool to load dyndep files because they are part of
the build graph.  Issue a warning when the dyndep file cannot be loaded
cleanly.  This will help users visualize the complete build graph.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/graphviz.h b/src/graphviz.h
index 408496d..601c9b2 100644
--- a/src/graphviz.h
+++ b/src/graphviz.h
@@ -17,15 +17,22 @@
 
 #include <set>
 
+#include "dyndep.h"
+
+struct DiskInterface;
 struct Node;
 struct Edge;
+struct State;
 
 /// Runs the process of creating GraphViz .dot file output.
 struct GraphViz {
+  GraphViz(State* state, DiskInterface* disk_interface)
+      : dyndep_loader_(state, disk_interface) {}
   void Start();
   void AddTarget(Node* node);
   void Finish();
 
+  DyndepLoader dyndep_loader_;
   std::set<Node*> visited_nodes_;
   std::set<Edge*> visited_edges_;
 };