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+This directory contains a version of ccache. The initial version was based on ccache-2.4 plus
+debian patches 01-02, 04-14, see the debian/patches subdirectory. The ccache-win32-2.4 modifications
+to ccache-2.4 have also been merged in.
+
+Changes have been made to support cacheing the output from SWIG. The ability to cache c/c++ compiler
+output has been retained.
+
+Additional features added are the CCACHE_VERBOSE and CCACHE_SWIG environment variables, see docs.