ENH: Add check for infinite loops. Make sure that files written using WRITE_FILE and FILE WRITE are not used as input files. Fixes Bug #678 - WRITE_FILE and FILE(WRITE...) lead to infinite loops

1 files changed, 12 insertions, 0 deletions

diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 092d742450..194729e336 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -82,6 +82,18 @@ public:
   void RemoveFunctionBlocker(cmFunctionBlocker *fb)
     { m_FunctionBlockers.remove(fb);}
   void RemoveFunctionBlocker(const cmListFileFunction& lff);
+
+  /**
+   * Add file to the written file list. These file should not be in the list
+   * of dependencies because they cause infinite loops.
+   */
+  void AddWrittenFile(const char* file);
+  bool HasWrittenFile(const char* file);
+
+  /**
+   * Check if there are any infinite loops
+   */
+  bool CheckInfiniteLoops();
   
   /**
    * Try running cmake and building a file. This is used for dynalically