cmState: Compute and store directory components.

There is no need to duplicate these in all cmLocalGenerators.

Rename the symbols according to current conventions.

Add explicit calls to Set{Source,Binary}Directory with empty strings
in order to trigger the population of the components containers with
the current working directory in cmLocalGenerator.  Having
directories set to empty is a special case in CMake, which is relied
on for the `if(CMAKE_BINARY_DIR)` condition at the end of
CMakeDetermineSystem.cmake.

1 files changed, 6 insertions, 0 deletions

diff --git a/Source/cmState.h b/Source/cmState.h
index ed58c64..956b4f4 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -123,6 +123,9 @@ public:
   const char* GetBinaryDirectory() const;
   void SetBinaryDirectory(std::string const& binaryDirectory);
 
+  std::vector<std::string> const& GetSourceDirectoryComponents() const;
+  std::vector<std::string> const& GetBinaryDirectoryComponents() const;
+
 private:
   std::map<cmProperty::ScopeType, cmPropertyDefinitionMap> PropertyDefinitions;
   std::vector<std::string> EnabledLanguages;
@@ -132,6 +135,9 @@ private:
   std::vector<std::string> Locations;
   std::vector<std::string> OutputLocations;
   std::vector<PositionType> ParentPositions;
+
+  std::vector<std::string> SourceDirectoryComponents;
+  std::vector<std::string> BinaryDirectoryComponents;
   std::string SourceDirectory;
   std::string BinaryDirectory;
   bool IsInTryCompile;