Modules/FindPythonLibs.cmake - third_party/cmake - Git at Google

 # - Find python libraries
 # This module finds if Python is installed and determines where the
 # include files and libraries are. It also determines what the name of
 # the library is. This code sets the following variables:
 #
 #  PYTHONLIBS_FOUND           - have the Python libs been found
 #  PYTHON_LIBRARIES           - path to the python library
 #  PYTHON_INCLUDE_PATH        - path to where Python.h is found (deprecated)
 #  PYTHON_INCLUDE_DIRS        - path to where Python.h is found
 #  PYTHON_DEBUG_LIBRARIES     - path to the debug library (deprecated)
 #  PYTHONLIBS_VERSION_STRING  - version of the Python libs found (since CMake 2.8.8)
 #
 # The Python_ADDITIONAL_VERSIONS variable can be used to specify a list of
 # version numbers that should be taken into account when searching for Python.
 # You need to set this variable before calling find_package(PythonLibs).

 #=============================================================================
 # Copyright 2001-2009 Kitware, Inc.
 #
 # Distributed under the OSI-approved BSD License (the "License");
 # see accompanying file Copyright.txt for details.
 #
 # This software is distributed WITHOUT ANY WARRANTY; without even the
 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 # See the License for more information.
 #=============================================================================
 # (To distribute this file outside of CMake, substitute the full
 #  License text for the above reference.)

 INCLUDE(CMakeFindFrameworks)
 # Search for the python framework on Apple.
 CMAKE_FIND_FRAMEWORKS(Python)

 SET(_PYTHON1_VERSIONS 1.6 1.5)
 SET(_PYTHON2_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
 SET(_PYTHON3_VERSIONS 3.3 3.2 3.1 3.0)

 IF(PythonLibs_FIND_VERSION)
     IF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
         STRING(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonLibs_FIND_VERSION}")
         STRING(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}")
         UNSET(_PYTHON_FIND_OTHER_VERSIONS)
         IF(NOT PythonLibs_FIND_VERSION_EXACT)
             FOREACH(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS})
                 IF(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN)
                     LIST(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
                 ENDIF()
              ENDFOREACH()
         ENDIF(NOT PythonLibs_FIND_VERSION_EXACT)
         UNSET(_PYTHON_FIND_MAJ_MIN)
         UNSET(_PYTHON_FIND_MAJ)
     ELSE(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
         SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonLibs_FIND_VERSION}_VERSIONS})
     ENDIF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
 ELSE(PythonLibs_FIND_VERSION)
     SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
 ENDIF(PythonLibs_FIND_VERSION)

 # Set up the versions we know about, in the order we will search. Always add
 # the user supplied additional versions to the front.
 SET(_Python_VERSIONS
   ${Python_ADDITIONAL_VERSIONS}
   ${_PYTHON_FIND_OTHER_VERSIONS}
   )

 UNSET(_PYTHON_FIND_OTHER_VERSIONS)
 UNSET(_PYTHON1_VERSIONS)
 UNSET(_PYTHON2_VERSIONS)
 UNSET(_PYTHON3_VERSIONS)

 FOREACH(_CURRENT_VERSION ${_Python_VERSIONS})
   STRING(REPLACE "." "" _CURRENT_VERSION_NO_DOTS ${_CURRENT_VERSION})
   IF(WIN32)
     FIND_LIBRARY(PYTHON_DEBUG_LIBRARY
       NAMES python${_CURRENT_VERSION_NO_DOTS}_d python
       PATHS
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
       )
   ENDIF(WIN32)

   FIND_LIBRARY(PYTHON_LIBRARY
     NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
     PATHS
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
     # Avoid finding the .dll in the PATH.  We want the .lib.
     NO_SYSTEM_ENVIRONMENT_PATH
   )
   # Look for the static library in the Python config directory
   FIND_LIBRARY(PYTHON_LIBRARY
     NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
     # Avoid finding the .dll in the PATH.  We want the .lib.
     NO_SYSTEM_ENVIRONMENT_PATH
     # This is where the static library is usually located
     PATH_SUFFIXES python${_CURRENT_VERSION}/config
   )

   # For backward compatibility, honour value of PYTHON_INCLUDE_PATH, if
   # PYTHON_INCLUDE_DIR is not set.
   IF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)
     SET(PYTHON_INCLUDE_DIR "${PYTHON_INCLUDE_PATH}" CACHE PATH
       "Path to where Python.h is found" FORCE)
   ENDIF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)

   SET(PYTHON_FRAMEWORK_INCLUDES)
   IF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)
     FOREACH(dir ${Python_FRAMEWORKS})
       SET(PYTHON_FRAMEWORK_INCLUDES ${PYTHON_FRAMEWORK_INCLUDES}
         ${dir}/Versions/${_CURRENT_VERSION}/include/python${_CURRENT_VERSION})
     ENDFOREACH(dir)
   ENDIF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)

   FIND_PATH(PYTHON_INCLUDE_DIR
     NAMES Python.h
     PATHS
       ${PYTHON_FRAMEWORK_INCLUDES}
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
     PATH_SUFFIXES
       python${_CURRENT_VERSION}
   )

   # For backward compatibility, set PYTHON_INCLUDE_PATH, but make it internal.
   SET(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}" CACHE INTERNAL
     "Path to where Python.h is found (deprecated)")

   IF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")
     FILE(STRINGS "${PYTHON_INCLUDE_DIR}/patchlevel.h" python_version_str
          REGEX "^#define[ \t]+PY_VERSION[ \t]+\"[^\"]+\"")
     STRING(REGEX REPLACE "^#define[ \t]+PY_VERSION[ \t]+\"([^\"]+)\".*" "\\1"
                          PYTHONLIBS_VERSION_STRING "${python_version_str}")
     UNSET(python_version_str)
   ENDIF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")

   IF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
     BREAK()
   ENDIF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
 ENDFOREACH(_CURRENT_VERSION)

 MARK_AS_ADVANCED(
   PYTHON_DEBUG_LIBRARY
   PYTHON_LIBRARY
   PYTHON_INCLUDE_DIR
 )

 # We use PYTHON_INCLUDE_DIR, PYTHON_LIBRARY and PYTHON_DEBUG_LIBRARY for the
 # cache entries because they are meant to specify the location of a single
 # library. We now set the variables listed by the documentation for this
 # module.
 SET(PYTHON_INCLUDE_DIRS "${PYTHON_INCLUDE_DIR}")
 SET(PYTHON_DEBUG_LIBRARIES "${PYTHON_DEBUG_LIBRARY}")

 # These variables have been historically named in this module different from
 # what SELECT_LIBRARY_CONFIGURATIONS() expects.
 SET(PYTHON_LIBRARY_DEBUG "${PYTHON_DEBUG_LIBRARY}")
 SET(PYTHON_LIBRARY_RELEASE "${PYTHON_LIBRARY}")
 INCLUDE(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
 SELECT_LIBRARY_CONFIGURATIONS(PYTHON)
 # SELECT_LIBRARY_CONFIGURATIONS() sets ${PREFIX}_FOUND if it has a library.
 # Unset this, this prefix doesn't match the module prefix, they are different
 # for historical reasons.
 UNSET(PYTHON_FOUND)

 INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibs
                                   REQUIRED_VARS PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS
                                   VERSION_VAR PYTHONLIBS_VERSION_STRING)

 # PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python.
 # PYTHON_WRITE_MODULES_HEADER(<filename>) writes a header file you can include
 # in your sources to initialize the static python modules
 FUNCTION(PYTHON_ADD_MODULE _NAME )
   GET_PROPERTY(_TARGET_SUPPORTS_SHARED_LIBS
     GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS)
   OPTION(PYTHON_ENABLE_MODULE_${_NAME} "Add module ${_NAME}" TRUE)
   OPTION(PYTHON_MODULE_${_NAME}_BUILD_SHARED
     "Add module ${_NAME} shared" ${_TARGET_SUPPORTS_SHARED_LIBS})

   # Mark these options as advanced
   MARK_AS_ADVANCED(PYTHON_ENABLE_MODULE_${_NAME}
     PYTHON_MODULE_${_NAME}_BUILD_SHARED)

   IF(PYTHON_ENABLE_MODULE_${_NAME})
     IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
       SET(PY_MODULE_TYPE MODULE)
     ELSE(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
       SET(PY_MODULE_TYPE STATIC)
       SET_PROPERTY(GLOBAL  APPEND  PROPERTY  PY_STATIC_MODULES_LIST ${_NAME})
     ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)

     SET_PROPERTY(GLOBAL  APPEND  PROPERTY  PY_MODULES_LIST ${_NAME})
     ADD_LIBRARY(${_NAME} ${PY_MODULE_TYPE} ${ARGN})
 #    TARGET_LINK_LIBRARIES(${_NAME} ${PYTHON_LIBRARIES})

     IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
       SET_TARGET_PROPERTIES(${_NAME} PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}")
       IF(WIN32 AND NOT CYGWIN)
         SET_TARGET_PROPERTIES(${_NAME} PROPERTIES SUFFIX ".pyd")
       ENDIF(WIN32 AND NOT CYGWIN)
     ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)

   ENDIF(PYTHON_ENABLE_MODULE_${_NAME})
 ENDFUNCTION(PYTHON_ADD_MODULE)

 FUNCTION(PYTHON_WRITE_MODULES_HEADER _filename)

   GET_PROPERTY(PY_STATIC_MODULES_LIST  GLOBAL  PROPERTY PY_STATIC_MODULES_LIST)

   GET_FILENAME_COMPONENT(_name "${_filename}" NAME)
   STRING(REPLACE "." "_" _name "${_name}")
   STRING(TOUPPER ${_name} _nameUpper)
   SET(_filename ${CMAKE_CURRENT_BINARY_DIR}/${_filename})

   SET(_filenameTmp "${_filename}.in")
   FILE(WRITE ${_filenameTmp} "/*Created by cmake, do not edit, changes will be lost*/\n")
   FILE(APPEND ${_filenameTmp}
 "#ifndef ${_nameUpper}
 #define ${_nameUpper}

 #include <Python.h>

 #ifdef __cplusplus
 extern \"C\" {
 #endif /* __cplusplus */

 ")

   FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
     FILE(APPEND ${_filenameTmp} "extern void init${PYTHON_MODULE_PREFIX}${_currentModule}(void);\n\n")
   ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})

   FILE(APPEND ${_filenameTmp}
 "#ifdef __cplusplus
 }
 #endif /* __cplusplus */

 ")


   FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
     FILE(APPEND ${_filenameTmp} "int ${_name}_${_currentModule}(void) \n{\n  static char name[]=\"${PYTHON_MODULE_PREFIX}${_currentModule}\"; return PyImport_AppendInittab(name, init${PYTHON_MODULE_PREFIX}${_currentModule});\n}\n\n")
   ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})

   FILE(APPEND ${_filenameTmp} "void ${_name}_LoadAllPythonModules(void)\n{\n")
   FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
     FILE(APPEND ${_filenameTmp} "  ${_name}_${_currentModule}();\n")
   ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
   FILE(APPEND ${_filenameTmp} "}\n\n")
   FILE(APPEND ${_filenameTmp} "#ifndef EXCLUDE_LOAD_ALL_FUNCTION\nvoid CMakeLoadAllPythonModules(void)\n{\n  ${_name}_LoadAllPythonModules();\n}\n#endif\n\n#endif\n")

 # with CONFIGURE_FILE() cmake complains that you may not use a file created using FILE(WRITE) as input file for CONFIGURE_FILE()
   EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${_filenameTmp}" "${_filename}" OUTPUT_QUIET ERROR_QUIET)

 ENDFUNCTION(PYTHON_WRITE_MODULES_HEADER)
	# - Find python libraries
	# This module finds if Python is installed and determines where the
	# include files and libraries are. It also determines what the name of
	# the library is. This code sets the following variables:
	#
	# PYTHONLIBS_FOUND - have the Python libs been found
	# PYTHON_LIBRARIES - path to the python library
	# PYTHON_INCLUDE_PATH - path to where Python.h is found (deprecated)
	# PYTHON_INCLUDE_DIRS - path to where Python.h is found
	# PYTHON_DEBUG_LIBRARIES - path to the debug library (deprecated)
	# PYTHONLIBS_VERSION_STRING - version of the Python libs found (since CMake 2.8.8)
	#
	# The Python_ADDITIONAL_VERSIONS variable can be used to specify a list of
	# version numbers that should be taken into account when searching for Python.
	# You need to set this variable before calling find_package(PythonLibs).

	#=============================================================================
	# Copyright 2001-2009 Kitware, Inc.
	#
	# Distributed under the OSI-approved BSD License (the "License");
	# see accompanying file Copyright.txt for details.
	#
	# This software is distributed WITHOUT ANY WARRANTY; without even the
	# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	# See the License for more information.
	#=============================================================================
	# (To distribute this file outside of CMake, substitute the full
	# License text for the above reference.)

	INCLUDE(CMakeFindFrameworks)
	# Search for the python framework on Apple.
	CMAKE_FIND_FRAMEWORKS(Python)

	SET(_PYTHON1_VERSIONS 1.6 1.5)
	SET(_PYTHON2_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
	SET(_PYTHON3_VERSIONS 3.3 3.2 3.1 3.0)

	IF(PythonLibs_FIND_VERSION)
	IF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
	STRING(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonLibs_FIND_VERSION}")
	STRING(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}")
	UNSET(_PYTHON_FIND_OTHER_VERSIONS)
	IF(NOT PythonLibs_FIND_VERSION_EXACT)
	FOREACH(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS})
	IF(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN)
	LIST(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
	ENDIF()
	ENDFOREACH()
	ENDIF(NOT PythonLibs_FIND_VERSION_EXACT)
	UNSET(_PYTHON_FIND_MAJ_MIN)
	UNSET(_PYTHON_FIND_MAJ)
	ELSE(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
	SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonLibs_FIND_VERSION}_VERSIONS})
	ENDIF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
	ELSE(PythonLibs_FIND_VERSION)
	SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
	ENDIF(PythonLibs_FIND_VERSION)

	# Set up the versions we know about, in the order we will search. Always add
	# the user supplied additional versions to the front.
	SET(_Python_VERSIONS
	${Python_ADDITIONAL_VERSIONS}
	${_PYTHON_FIND_OTHER_VERSIONS}
	)

	UNSET(_PYTHON_FIND_OTHER_VERSIONS)
	UNSET(_PYTHON1_VERSIONS)
	UNSET(_PYTHON2_VERSIONS)
	UNSET(_PYTHON3_VERSIONS)

	FOREACH(_CURRENT_VERSION ${_Python_VERSIONS})
	STRING(REPLACE "." "" _CURRENT_VERSION_NO_DOTS ${_CURRENT_VERSION})
	IF(WIN32)
	FIND_LIBRARY(PYTHON_DEBUG_LIBRARY
	NAMES python${_CURRENT_VERSION_NO_DOTS}_d python
	PATHS
	[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
	[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
	[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
	[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
	)
	ENDIF(WIN32)

	FIND_LIBRARY(PYTHON_LIBRARY
	NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
	PATHS
	[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
	[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
	# Avoid finding the .dll in the PATH. We want the .lib.
	NO_SYSTEM_ENVIRONMENT_PATH
	)
	# Look for the static library in the Python config directory
	FIND_LIBRARY(PYTHON_LIBRARY
	NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
	# Avoid finding the .dll in the PATH. We want the .lib.
	NO_SYSTEM_ENVIRONMENT_PATH
	# This is where the static library is usually located
	PATH_SUFFIXES python${_CURRENT_VERSION}/config
	)

	# For backward compatibility, honour value of PYTHON_INCLUDE_PATH, if
	# PYTHON_INCLUDE_DIR is not set.
	IF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)
	SET(PYTHON_INCLUDE_DIR "${PYTHON_INCLUDE_PATH}" CACHE PATH
	"Path to where Python.h is found" FORCE)
	ENDIF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)

	SET(PYTHON_FRAMEWORK_INCLUDES)
	IF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)
	FOREACH(dir ${Python_FRAMEWORKS})
	SET(PYTHON_FRAMEWORK_INCLUDES ${PYTHON_FRAMEWORK_INCLUDES}
	${dir}/Versions/${_CURRENT_VERSION}/include/python${_CURRENT_VERSION})
	ENDFOREACH(dir)
	ENDIF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)

	FIND_PATH(PYTHON_INCLUDE_DIR
	NAMES Python.h
	PATHS
	${PYTHON_FRAMEWORK_INCLUDES}
	[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
	[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
	PATH_SUFFIXES
	python${_CURRENT_VERSION}
	)

	# For backward compatibility, set PYTHON_INCLUDE_PATH, but make it internal.
	SET(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}" CACHE INTERNAL
	"Path to where Python.h is found (deprecated)")

	IF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")
	FILE(STRINGS "${PYTHON_INCLUDE_DIR}/patchlevel.h" python_version_str
	REGEX "^#define[ \t]+PY_VERSION[ \t]+\"[^\"]+\"")
	STRING(REGEX REPLACE "^#define[ \t]+PY_VERSION[ \t]+\"([^\"]+)\".*" "\\1"
	PYTHONLIBS_VERSION_STRING "${python_version_str}")
	UNSET(python_version_str)
	ENDIF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")

	IF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
	BREAK()
	ENDIF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
	ENDFOREACH(_CURRENT_VERSION)

	MARK_AS_ADVANCED(
	PYTHON_DEBUG_LIBRARY
	PYTHON_LIBRARY
	PYTHON_INCLUDE_DIR
	)

	# We use PYTHON_INCLUDE_DIR, PYTHON_LIBRARY and PYTHON_DEBUG_LIBRARY for the
	# cache entries because they are meant to specify the location of a single
	# library. We now set the variables listed by the documentation for this
	# module.
	SET(PYTHON_INCLUDE_DIRS "${PYTHON_INCLUDE_DIR}")
	SET(PYTHON_DEBUG_LIBRARIES "${PYTHON_DEBUG_LIBRARY}")

	# These variables have been historically named in this module different from
	# what SELECT_LIBRARY_CONFIGURATIONS() expects.
	SET(PYTHON_LIBRARY_DEBUG "${PYTHON_DEBUG_LIBRARY}")
	SET(PYTHON_LIBRARY_RELEASE "${PYTHON_LIBRARY}")
	INCLUDE(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
	SELECT_LIBRARY_CONFIGURATIONS(PYTHON)
	# SELECT_LIBRARY_CONFIGURATIONS() sets ${PREFIX}_FOUND if it has a library.
	# Unset this, this prefix doesn't match the module prefix, they are different
	# for historical reasons.
	UNSET(PYTHON_FOUND)

	INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
	FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibs
	REQUIRED_VARS PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS
	VERSION_VAR PYTHONLIBS_VERSION_STRING)

	# PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python.
	# PYTHON_WRITE_MODULES_HEADER(<filename>) writes a header file you can include
	# in your sources to initialize the static python modules
	FUNCTION(PYTHON_ADD_MODULE _NAME )
	GET_PROPERTY(_TARGET_SUPPORTS_SHARED_LIBS
	GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS)
	OPTION(PYTHON_ENABLE_MODULE_${_NAME} "Add module ${_NAME}" TRUE)
	OPTION(PYTHON_MODULE_${_NAME}_BUILD_SHARED
	"Add module ${_NAME} shared" ${_TARGET_SUPPORTS_SHARED_LIBS})

	# Mark these options as advanced
	MARK_AS_ADVANCED(PYTHON_ENABLE_MODULE_${_NAME}
	PYTHON_MODULE_${_NAME}_BUILD_SHARED)

	IF(PYTHON_ENABLE_MODULE_${_NAME})
	IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
	SET(PY_MODULE_TYPE MODULE)
	ELSE(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
	SET(PY_MODULE_TYPE STATIC)
	SET_PROPERTY(GLOBAL APPEND PROPERTY PY_STATIC_MODULES_LIST ${_NAME})
	ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)

	SET_PROPERTY(GLOBAL APPEND PROPERTY PY_MODULES_LIST ${_NAME})
	ADD_LIBRARY(${_NAME} ${PY_MODULE_TYPE} ${ARGN})
	# TARGET_LINK_LIBRARIES(${_NAME} ${PYTHON_LIBRARIES})

	IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
	SET_TARGET_PROPERTIES(${_NAME} PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}")
	IF(WIN32 AND NOT CYGWIN)
	SET_TARGET_PROPERTIES(${_NAME} PROPERTIES SUFFIX ".pyd")
	ENDIF(WIN32 AND NOT CYGWIN)
	ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)

	ENDIF(PYTHON_ENABLE_MODULE_${_NAME})
	ENDFUNCTION(PYTHON_ADD_MODULE)

	FUNCTION(PYTHON_WRITE_MODULES_HEADER _filename)

	GET_PROPERTY(PY_STATIC_MODULES_LIST GLOBAL PROPERTY PY_STATIC_MODULES_LIST)

	GET_FILENAME_COMPONENT(_name "${_filename}" NAME)
	STRING(REPLACE "." "_" _name "${_name}")
	STRING(TOUPPER ${_name} _nameUpper)
	SET(_filename ${CMAKE_CURRENT_BINARY_DIR}/${_filename})

	SET(_filenameTmp "${_filename}.in")
	FILE(WRITE ${_filenameTmp} "/Created by cmake, do not edit, changes will be lost/\n")
	FILE(APPEND ${_filenameTmp}
	"#ifndef ${_nameUpper}
	#define ${_nameUpper}

	#include <Python.h>

	#ifdef __cplusplus
	extern \"C\" {
	#endif /* __cplusplus */

	")

	FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
	FILE(APPEND ${_filenameTmp} "extern void init${PYTHON_MODULE_PREFIX}${_currentModule}(void);\n\n")
	ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})

	FILE(APPEND ${_filenameTmp}
	"#ifdef __cplusplus
	}
	#endif /* __cplusplus */

	")


	FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
	FILE(APPEND ${_filenameTmp} "int ${_name}_${_currentModule}(void) \n{\n static char name[]=\"${PYTHON_MODULE_PREFIX}${_currentModule}\"; return PyImport_AppendInittab(name, init${PYTHON_MODULE_PREFIX}${_currentModule});\n}\n\n")
	ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})

	FILE(APPEND ${_filenameTmp} "void ${_name}_LoadAllPythonModules(void)\n{\n")
	FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
	FILE(APPEND ${_filenameTmp} " ${_name}_${_currentModule}();\n")
	ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
	FILE(APPEND ${_filenameTmp} "}\n\n")
	FILE(APPEND ${_filenameTmp} "#ifndef EXCLUDE_LOAD_ALL_FUNCTION\nvoid CMakeLoadAllPythonModules(void)\n{\n ${_name}_LoadAllPythonModules();\n}\n#endif\n\n#endif\n")

	# with CONFIGURE_FILE() cmake complains that you may not use a file created using FILE(WRITE) as input file for CONFIGURE_FILE()
	EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${_filenameTmp}" "${_filename}" OUTPUT_QUIET ERROR_QUIET)

	ENDFUNCTION(PYTHON_WRITE_MODULES_HEADER)