cmState: Store computed relative paths to to current directories.

1 files changed, 16 insertions, 0 deletions

diff --git a/Source/cmState.h b/Source/cmState.h
index faf0739..23d3f0d 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -39,10 +39,19 @@ public:
     std::vector<std::string> const& GetCurrentSourceDirectoryComponents();
     std::vector<std::string> const& GetCurrentBinaryDirectoryComponents();
 
+    const char* GetRelativePathTopSource() const;
+    const char* GetRelativePathTopBinary() const;
+    void SetRelativePathTopSource(const char* dir);
+    void SetRelativePathTopBinary(const char* dir);
+
     bool IsValid() const;
     Snapshot GetParent() const;
 
   private:
+    void ComputeRelativePathTopSource();
+    void ComputeRelativePathTopBinary();
+
+  private:
     friend class cmState;
     cmState* State;
     cmState::PositionType Position;
@@ -141,6 +150,13 @@ private:
 
   std::vector<std::vector<std::string> > CurrentSourceDirectoryComponents;
   std::vector<std::vector<std::string> > CurrentBinaryDirectoryComponents;
+  // The top-most directories for relative path conversion.  Both the
+  // source and destination location of a relative path conversion
+  // must be underneath one of these directories (both under source or
+  // both under binary) in order for the relative path to be evaluated
+  // safely by the build tools.
+  std::vector<std::string> RelativePathTopSource;
+  std::vector<std::string> RelativePathTopBinary;
 
   std::vector<std::string> SourceDirectoryComponents;
   std::vector<std::string> BinaryDirectoryComponents;