add

+# Python macros
+# ~~~~~~~~~~~~~
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+# This file defines the following macros:
+#
+# PYTHON_INSTALL (SOURCE_FILE DESTINATION_DIR)
+#     Install the SOURCE_FILE, which is a Python .py file, into the
+#     destination directory during install. The file will be byte compiled
+#     and both the .py file and .pyc file will be installed.
+
+GET_FILENAME_COMPONENT(PYTHON_MACROS_MODULE_PATH ${CMAKE_CURRENT_LIST_FILE}  PATH)
+
+MACRO(PYTHON_INSTALL SOURCE_FILE DESTINATION_DIR)
+
+  FIND_FILE(_python_compile_py PythonCompile.py PATHS ${CMAKE_MODULE_PATH})
+
+
+  # Install the source file.
+  INSTALL(FILES ${SOURCE_FILE} DESTINATION ${DESTINATION_DIR})
+
+  # Byte compile and install the .pyc file.        
+  GET_FILENAME_COMPONENT(_absfilename ${SOURCE_FILE} ABSOLUTE)
+  GET_FILENAME_COMPONENT(_filename ${SOURCE_FILE} NAME)
+  GET_FILENAME_COMPONENT(_filenamebase ${SOURCE_FILE} NAME_WE)
+  GET_FILENAME_COMPONENT(_basepath ${SOURCE_FILE} PATH)
+
+  if(WIN32)
+    string(REGEX REPLACE ".:/" "/" _basepath "${_basepath}")
+  endif(WIN32)
+
+  SET(_bin_py ${CMAKE_CURRENT_BINARY_DIR}/${_basepath}/${_filename})
+  SET(_bin_pyc ${CMAKE_CURRENT_BINARY_DIR}/${_basepath}/${_filenamebase}.pyc)
+
+  FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${_basepath})
+
+  SET(_message "-DMESSAGE=Byte-compiling ${_bin_py}")
+
+  GET_FILENAME_COMPONENT(_abs_bin_py ${_bin_py} ABSOLUTE)
+  IF(_abs_bin_py STREQUAL ${_absfilename})    # Don't copy the file onto itself.
+    ADD_CUSTOM_COMMAND(
+      TARGET compile_python_files
+      COMMAND ${CMAKE_COMMAND} -E echo ${message}
+      COMMAND ${PYTHON_EXECUTABLE} ${_python_compile_py} ${_bin_py}
+      DEPENDS ${_absfilename}
+    )
+  ELSE(_abs_bin_py STREQUAL ${_absfilename})
+    ADD_CUSTOM_COMMAND(
+      TARGET compile_python_files
+      COMMAND ${CMAKE_COMMAND} -E echo ${message} 
+      COMMAND ${CMAKE_COMMAND} -E copy ${_absfilename} ${_bin_py}
+      COMMAND ${PYTHON_EXECUTABLE} ${_python_compile_py} ${_bin_py}
+      DEPENDS ${_absfilename}
+    )
+  ENDIF(_abs_bin_py STREQUAL ${_absfilename})
+
+  INSTALL(FILES ${_bin_pyc} DESTINATION ${DESTINATION_DIR})
+ENDMACRO(PYTHON_INSTALL)