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# Find Python
# ~~~~~~~~~~~
# 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.
#
# Find the Python interpreter and related Python directories.
#
# This file defines the following variables:
#
# PYTHON_EXECUTABLE - The path and filename of the Python interpreter.
#
# PYTHON_SHORT_VERSION - The version of the Python interpreter found,
# excluding the patch version number. (e.g. 2.5 and not 2.5.1))
#
# PYTHON_LONG_VERSION - The version of the Python interpreter found as a human
# readable string.
#
# PYTHON_SITE_PACKAGES_DIR - Location of the Python site-packages directory.
#
# PYTHON_INCLUDE_PATH - Directory holding the python.h include file.
#
# PYTHON_LIBRARY, PYTHON_LIBRARIES- Location of the Python library.
INCLUDE(CMakeFindFrameworks)
IF(EXISTS PYTHON_LIBRARY)
# Already in cache, be silent
SET(PYTHONLIBRARY_FOUND TRUE)
ELSE(EXISTS PYTHON_LIBRARY)
FIND_PACKAGE(PythonInterp REQUIRED)
FIND_FILE(_find_lib_python_py FindLibPython.py PATHS ${CMAKE_MODULE_PATH})
EXECUTE_PROCESS(COMMAND ${PYTHON_EXECUTABLE} ${_find_lib_python_py} OUTPUT_VARIABLE python_config)
IF(python_config)
STRING(REGEX REPLACE ".*exec_prefix:([^\n]+).*$" "\\1" PYTHON_PREFIX ${python_config})
STRING(REGEX REPLACE ".*\nshort_version:([^\n]+).*$" "\\1" PYTHON_SHORT_VERSION ${python_config})
STRING(REGEX REPLACE ".*\nlong_version:([^\n]+).*$" "\\1" PYTHON_LONG_VERSION ${python_config})
STRING(REGEX REPLACE ".*\npy_inc_dir:([^\n]+).*$" "\\1" PYTHON_INCLUDE_PATH ${python_config})
STRING(REGEX REPLACE ".*\nsite_packages_dir:([^\n]+).*$" "\\1" PYTHON_SITE_PACKAGES_DIR ${python_config})
STRING(REGEX REPLACE "([0-9]+).([0-9]+)" "\\1\\2" PYTHON_SHORT_VERSION_NO_DOT ${PYTHON_SHORT_VERSION})
set(PYTHON_LIBRARY_NAMES python${PYTHON_SHORT_VERSION} python${PYTHON_SHORT_VERSION_NO_DOT})
if(WIN32)
STRING(REPLACE "\\" "/" PYTHON_SITE_PACKAGES_DIR ${PYTHON_SITE_PACKAGES_DIR})
endif(WIN32)
FIND_LIBRARY(PYTHON_LIBRARY NAMES ${PYTHON_LIBRARY_NAMES} PATHS ${PYTHON_PREFIX}/lib ${PYTHON_PREFIX}/libs NO_DEFAULT_PATH)
SET(PYTHONLIBRARY_FOUND TRUE)
ENDIF(python_config)
# adapted from cmake's builtin FindPythonLibs
if(APPLE)
CMAKE_FIND_FRAMEWORKS(Python)
SET(PYTHON_FRAMEWORK_INCLUDES)
IF(Python_FRAMEWORKS)
# If a framework has been selected for the include path,
# make sure "-framework" is used to link it.
IF("${PYTHON_INCLUDE_PATH}" MATCHES "Python\\.framework")
SET(PYTHON_LIBRARY "")
SET(PYTHON_DEBUG_LIBRARY "")
ENDIF("${PYTHON_INCLUDE_PATH}" MATCHES "Python\\.framework")
IF(NOT PYTHON_LIBRARY)
SET (PYTHON_LIBRARY "-framework Python" CACHE FILEPATH "Python Framework" FORCE)
ENDIF(NOT PYTHON_LIBRARY)
SET(PYTHONLIBRARY_FOUND TRUE)
ENDIF(Python_FRAMEWORKS)
ENDIF(APPLE)
IF(PYTHONLIBRARY_FOUND)
SET(PYTHON_LIBRARIES ${PYTHON_LIBRARY})
IF(NOT PYTHONLIBRARY_FIND_QUIETLY)
MESSAGE(STATUS "Found Python executable: ${PYTHON_EXECUTABLE}")
MESSAGE(STATUS "Found Python version: ${PYTHON_LONG_VERSION}")
MESSAGE(STATUS "Found Python library: ${PYTHON_LIBRARY}")
ENDIF(NOT PYTHONLIBRARY_FIND_QUIETLY)
ELSE(PYTHONLIBRARY_FOUND)
IF(PYTHONLIBRARY_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Python")
ENDIF(PYTHONLIBRARY_FIND_REQUIRED)
ENDIF(PYTHONLIBRARY_FOUND)
ENDIF (EXISTS PYTHON_LIBRARY)
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