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# Find Python
# ~~~~~~~~~~~
# 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_INSTALL_DIR - this cache variable can be used for installing
# own python modules. You may want to adjust this to be the
# same as ${PYTHON_SITE_PACKAGES_DIR}, but then admin
# privileges may be required for installation.
#
# 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.
# 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.
include(CMakeFindFrameworks)
if(EXISTS PYTHON_LIBRARY)
# Already in cache, be silent
set(PYTHONLIBRARY_FOUND TRUE)
else()
find_package(PythonInterp)
if(PYTHONINTERP_FOUND)
# get the directory of the current file, used later on in the file
get_filename_component( _py_cmake_module_dir ${CMAKE_CURRENT_LIST_FILE} PATH)
if(NOT EXISTS "${_py_cmake_module_dir}/FindLibPython.py")
message(FATAL_ERROR "The file FindLibPython.py does not exist in ${_py_cmake_module_dir} (the directory where FindPythonLibrary.cmake is located). Check your installation.")
endif()
execute_process(COMMAND ${PYTHON_EXECUTABLE} "${_py_cmake_module_dir}/FindLibPython.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" _TMP_PYTHON_INCLUDE_PATH ${python_config})
string(REGEX REPLACE ".*\nsite_packages_dir:([^\n]+).*$" "\\1" _TMP_PYTHON_SITE_PACKAGES_DIR ${python_config})
# Put these two variables in the cache so they are visible for the user, but read-only:
set(PYTHON_INCLUDE_PATH "${_TMP_PYTHON_INCLUDE_PATH}" CACHE PATH "The python include directory" FORCE)
set(PYTHON_SITE_PACKAGES_DIR "${_TMP_PYTHON_SITE_PACKAGES_DIR}" CACHE PATH "The python site packages dir" FORCE)
# This one is intended to be used and changed by the user for installing own modules:
set(PYTHON_SITE_PACKAGES_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}/python${PYTHON_SHORT_VERSION}/site-packages CACHE PATH "The directory where python modules will be installed to.")
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()
find_library(PYTHON_LIBRARY NAMES ${PYTHON_LIBRARY_NAMES} PATHS ${PYTHON_PREFIX}/lib ${PYTHON_PREFIX}/libs NO_DEFAULT_PATH)
set(PYTHONLIBRARY_FOUND TRUE)
endif()
# adapted from cmake's builtin FindPythonLibs
if(APPLE)
cmake_find_frameworks(Python)
set(PYTHON_FRAMEWORK_INCLUDES)
if(Python_FRAMEWORKS)
# If a framework has been selected for the include path,
# make sure "-framework" is used to link it.
if("${PYTHON_INCLUDE_PATH}" MATCHES "Python\\.framework")
set(PYTHON_LIBRARY "")
set(PYTHON_DEBUG_LIBRARY "")
endif()
if(NOT PYTHON_LIBRARY)
set (PYTHON_LIBRARY "-framework Python" CACHE FILEPATH "Python Framework" FORCE)
endif()
set(PYTHONLIBRARY_FOUND TRUE)
endif()
endif()
endif()
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()
else()
if(PYTHONLIBRARY_FIND_REQUIRED)
message(FATAL_ERROR "Could not find Python")
endif()
endif()
endif (EXISTS PYTHON_LIBRARY)
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