111986Sandreas.sandberg@arm.com# - Find python libraries 214299Sbbruce@ucdavis.edu# This module finds the libraries corresponding to the Python interpreter 311986Sandreas.sandberg@arm.com# FindPythonInterp provides. 411986Sandreas.sandberg@arm.com# This code sets the following variables: 511986Sandreas.sandberg@arm.com# 611986Sandreas.sandberg@arm.com# PYTHONLIBS_FOUND - have the Python libs been found 711986Sandreas.sandberg@arm.com# PYTHON_PREFIX - path to the Python installation 811986Sandreas.sandberg@arm.com# PYTHON_LIBRARIES - path to the python library 911986Sandreas.sandberg@arm.com# PYTHON_INCLUDE_DIRS - path to where Python.h is found 1011986Sandreas.sandberg@arm.com# PYTHON_MODULE_EXTENSION - lib extension, e.g. '.so' or '.pyd' 1111986Sandreas.sandberg@arm.com# PYTHON_MODULE_PREFIX - lib name prefix: usually an empty string 1211986Sandreas.sandberg@arm.com# PYTHON_SITE_PACKAGES - path to installation site-packages 1311986Sandreas.sandberg@arm.com# PYTHON_IS_DEBUG - whether the Python interpreter is a debug build 1411986Sandreas.sandberg@arm.com# 1511986Sandreas.sandberg@arm.com# Thanks to talljimbo for the patch adding the 'LDVERSION' config 1611986Sandreas.sandberg@arm.com# variable usage. 1711986Sandreas.sandberg@arm.com 1811986Sandreas.sandberg@arm.com#============================================================================= 1911986Sandreas.sandberg@arm.com# Copyright 2001-2009 Kitware, Inc. 2011986Sandreas.sandberg@arm.com# Copyright 2012 Continuum Analytics, Inc. 2111986Sandreas.sandberg@arm.com# 2211986Sandreas.sandberg@arm.com# All rights reserved. 2311986Sandreas.sandberg@arm.com# 2411986Sandreas.sandberg@arm.com# Redistribution and use in source and binary forms, with or without 2511986Sandreas.sandberg@arm.com# modification, are permitted provided that the following conditions 2611986Sandreas.sandberg@arm.com# are met: 2711986Sandreas.sandberg@arm.com# 2811986Sandreas.sandberg@arm.com# * Redistributions of source code must retain the above copyright 2911986Sandreas.sandberg@arm.com# notice, this list of conditions and the following disclaimer. 3011986Sandreas.sandberg@arm.com# 3111986Sandreas.sandberg@arm.com# * Redistributions in binary form must reproduce the above copyright 3211986Sandreas.sandberg@arm.com# notice, this list of conditions and the following disclaimer in the 3311986Sandreas.sandberg@arm.com# documentation and/or other materials provided with the distribution. 3411986Sandreas.sandberg@arm.com# 3511986Sandreas.sandberg@arm.com# * Neither the names of Kitware, Inc., the Insight Software Consortium, 3611986Sandreas.sandberg@arm.com# nor the names of their contributors may be used to endorse or promote 3711986Sandreas.sandberg@arm.com# products derived from this software without specific prior written 3811986Sandreas.sandberg@arm.com# permission. 3911986Sandreas.sandberg@arm.com# 4011986Sandreas.sandberg@arm.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 4111986Sandreas.sandberg@arm.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 4211986Sandreas.sandberg@arm.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 4311986Sandreas.sandberg@arm.com# # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 4411986Sandreas.sandberg@arm.com# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4511986Sandreas.sandberg@arm.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 4611986Sandreas.sandberg@arm.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 4711986Sandreas.sandberg@arm.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 4811986Sandreas.sandberg@arm.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 4911986Sandreas.sandberg@arm.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 5011986Sandreas.sandberg@arm.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 5111986Sandreas.sandberg@arm.com#============================================================================= 5211986Sandreas.sandberg@arm.com 5312391Sjason@lowepower.com# Checking for the extension makes sure that `LibsNew` was found and not just `Libs`. 5412391Sjason@lowepower.comif(PYTHONLIBS_FOUND AND PYTHON_MODULE_EXTENSION) 5511986Sandreas.sandberg@arm.com return() 5611986Sandreas.sandberg@arm.comendif() 5711986Sandreas.sandberg@arm.com 5811986Sandreas.sandberg@arm.com# Use the Python interpreter to find the libs. 5911986Sandreas.sandberg@arm.comif(PythonLibsNew_FIND_REQUIRED) 6011986Sandreas.sandberg@arm.com find_package(PythonInterp ${PythonLibsNew_FIND_VERSION} REQUIRED) 6111986Sandreas.sandberg@arm.comelse() 6211986Sandreas.sandberg@arm.com find_package(PythonInterp ${PythonLibsNew_FIND_VERSION}) 6311986Sandreas.sandberg@arm.comendif() 6411986Sandreas.sandberg@arm.com 6511986Sandreas.sandberg@arm.comif(NOT PYTHONINTERP_FOUND) 6611986Sandreas.sandberg@arm.com set(PYTHONLIBS_FOUND FALSE) 6714299Sbbruce@ucdavis.edu set(PythonLibsNew_FOUND FALSE) 6811986Sandreas.sandberg@arm.com return() 6911986Sandreas.sandberg@arm.comendif() 7011986Sandreas.sandberg@arm.com 7111986Sandreas.sandberg@arm.com# According to http://stackoverflow.com/questions/646518/python-how-to-detect-debug-interpreter 7211986Sandreas.sandberg@arm.com# testing whether sys has the gettotalrefcount function is a reliable, cross-platform 7311986Sandreas.sandberg@arm.com# way to detect a CPython debug interpreter. 7411986Sandreas.sandberg@arm.com# 7511986Sandreas.sandberg@arm.com# The library suffix is from the config var LDVERSION sometimes, otherwise 7611986Sandreas.sandberg@arm.com# VERSION. VERSION will typically be like "2.7" on unix, and "27" on windows. 7711986Sandreas.sandberg@arm.comexecute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c" 7811986Sandreas.sandberg@arm.com "from distutils import sysconfig as s;import sys;import struct; 7911986Sandreas.sandberg@arm.comprint('.'.join(str(v) for v in sys.version_info)); 8011986Sandreas.sandberg@arm.comprint(sys.prefix); 8111986Sandreas.sandberg@arm.comprint(s.get_python_inc(plat_specific=True)); 8211986Sandreas.sandberg@arm.comprint(s.get_python_lib(plat_specific=True)); 8311986Sandreas.sandberg@arm.comprint(s.get_config_var('SO')); 8411986Sandreas.sandberg@arm.comprint(hasattr(sys, 'gettotalrefcount')+0); 8511986Sandreas.sandberg@arm.comprint(struct.calcsize('@P')); 8611986Sandreas.sandberg@arm.comprint(s.get_config_var('LDVERSION') or s.get_config_var('VERSION')); 8711986Sandreas.sandberg@arm.comprint(s.get_config_var('LIBDIR') or ''); 8811986Sandreas.sandberg@arm.comprint(s.get_config_var('MULTIARCH') or ''); 8911986Sandreas.sandberg@arm.com" 9011986Sandreas.sandberg@arm.com RESULT_VARIABLE _PYTHON_SUCCESS 9111986Sandreas.sandberg@arm.com OUTPUT_VARIABLE _PYTHON_VALUES 9211986Sandreas.sandberg@arm.com ERROR_VARIABLE _PYTHON_ERROR_VALUE) 9311986Sandreas.sandberg@arm.com 9411986Sandreas.sandberg@arm.comif(NOT _PYTHON_SUCCESS MATCHES 0) 9511986Sandreas.sandberg@arm.com if(PythonLibsNew_FIND_REQUIRED) 9611986Sandreas.sandberg@arm.com message(FATAL_ERROR 9711986Sandreas.sandberg@arm.com "Python config failure:\n${_PYTHON_ERROR_VALUE}") 9811986Sandreas.sandberg@arm.com endif() 9911986Sandreas.sandberg@arm.com set(PYTHONLIBS_FOUND FALSE) 10014299Sbbruce@ucdavis.edu set(PythonLibsNew_FOUND FALSE) 10111986Sandreas.sandberg@arm.com return() 10211986Sandreas.sandberg@arm.comendif() 10311986Sandreas.sandberg@arm.com 10411986Sandreas.sandberg@arm.com# Convert the process output into a list 10514299Sbbruce@ucdavis.eduif(WIN32) 10614299Sbbruce@ucdavis.edu string(REGEX REPLACE "\\\\" "/" _PYTHON_VALUES ${_PYTHON_VALUES}) 10714299Sbbruce@ucdavis.eduendif() 10811986Sandreas.sandberg@arm.comstring(REGEX REPLACE ";" "\\\\;" _PYTHON_VALUES ${_PYTHON_VALUES}) 10911986Sandreas.sandberg@arm.comstring(REGEX REPLACE "\n" ";" _PYTHON_VALUES ${_PYTHON_VALUES}) 11011986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 0 _PYTHON_VERSION_LIST) 11111986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 1 PYTHON_PREFIX) 11211986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 2 PYTHON_INCLUDE_DIR) 11311986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 3 PYTHON_SITE_PACKAGES) 11411986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 4 PYTHON_MODULE_EXTENSION) 11511986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 5 PYTHON_IS_DEBUG) 11611986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 6 PYTHON_SIZEOF_VOID_P) 11711986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 7 PYTHON_LIBRARY_SUFFIX) 11811986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 8 PYTHON_LIBDIR) 11911986Sandreas.sandberg@arm.comlist(GET _PYTHON_VALUES 9 PYTHON_MULTIARCH) 12011986Sandreas.sandberg@arm.com 12111986Sandreas.sandberg@arm.com# Make sure the Python has the same pointer-size as the chosen compiler 12211986Sandreas.sandberg@arm.com# Skip if CMAKE_SIZEOF_VOID_P is not defined 12311986Sandreas.sandberg@arm.comif(CMAKE_SIZEOF_VOID_P AND (NOT "${PYTHON_SIZEOF_VOID_P}" STREQUAL "${CMAKE_SIZEOF_VOID_P}")) 12411986Sandreas.sandberg@arm.com if(PythonLibsNew_FIND_REQUIRED) 12511986Sandreas.sandberg@arm.com math(EXPR _PYTHON_BITS "${PYTHON_SIZEOF_VOID_P} * 8") 12611986Sandreas.sandberg@arm.com math(EXPR _CMAKE_BITS "${CMAKE_SIZEOF_VOID_P} * 8") 12711986Sandreas.sandberg@arm.com message(FATAL_ERROR 12811986Sandreas.sandberg@arm.com "Python config failure: Python is ${_PYTHON_BITS}-bit, " 12911986Sandreas.sandberg@arm.com "chosen compiler is ${_CMAKE_BITS}-bit") 13011986Sandreas.sandberg@arm.com endif() 13111986Sandreas.sandberg@arm.com set(PYTHONLIBS_FOUND FALSE) 13214299Sbbruce@ucdavis.edu set(PythonLibsNew_FOUND FALSE) 13311986Sandreas.sandberg@arm.com return() 13411986Sandreas.sandberg@arm.comendif() 13511986Sandreas.sandberg@arm.com 13611986Sandreas.sandberg@arm.com# The built-in FindPython didn't always give the version numbers 13711986Sandreas.sandberg@arm.comstring(REGEX REPLACE "\\." ";" _PYTHON_VERSION_LIST ${_PYTHON_VERSION_LIST}) 13811986Sandreas.sandberg@arm.comlist(GET _PYTHON_VERSION_LIST 0 PYTHON_VERSION_MAJOR) 13911986Sandreas.sandberg@arm.comlist(GET _PYTHON_VERSION_LIST 1 PYTHON_VERSION_MINOR) 14011986Sandreas.sandberg@arm.comlist(GET _PYTHON_VERSION_LIST 2 PYTHON_VERSION_PATCH) 14111986Sandreas.sandberg@arm.com 14211986Sandreas.sandberg@arm.com# Make sure all directory separators are '/' 14311986Sandreas.sandberg@arm.comstring(REGEX REPLACE "\\\\" "/" PYTHON_PREFIX ${PYTHON_PREFIX}) 14411986Sandreas.sandberg@arm.comstring(REGEX REPLACE "\\\\" "/" PYTHON_INCLUDE_DIR ${PYTHON_INCLUDE_DIR}) 14511986Sandreas.sandberg@arm.comstring(REGEX REPLACE "\\\\" "/" PYTHON_SITE_PACKAGES ${PYTHON_SITE_PACKAGES}) 14611986Sandreas.sandberg@arm.com 14714299Sbbruce@ucdavis.eduif(CMAKE_HOST_WIN32 AND NOT (MSYS OR MINGW)) 14811986Sandreas.sandberg@arm.com set(PYTHON_LIBRARY 14911986Sandreas.sandberg@arm.com "${PYTHON_PREFIX}/libs/Python${PYTHON_LIBRARY_SUFFIX}.lib") 15011986Sandreas.sandberg@arm.com 15111986Sandreas.sandberg@arm.com # when run in a venv, PYTHON_PREFIX points to it. But the libraries remain in the 15211986Sandreas.sandberg@arm.com # original python installation. They may be found relative to PYTHON_INCLUDE_DIR. 15311986Sandreas.sandberg@arm.com if(NOT EXISTS "${PYTHON_LIBRARY}") 15411986Sandreas.sandberg@arm.com get_filename_component(_PYTHON_ROOT ${PYTHON_INCLUDE_DIR} DIRECTORY) 15511986Sandreas.sandberg@arm.com set(PYTHON_LIBRARY 15611986Sandreas.sandberg@arm.com "${_PYTHON_ROOT}/libs/Python${PYTHON_LIBRARY_SUFFIX}.lib") 15711986Sandreas.sandberg@arm.com endif() 15811986Sandreas.sandberg@arm.com 15911986Sandreas.sandberg@arm.com # raise an error if the python libs are still not found. 16011986Sandreas.sandberg@arm.com if(NOT EXISTS "${PYTHON_LIBRARY}") 16111986Sandreas.sandberg@arm.com message(FATAL_ERROR "Python libraries not found") 16211986Sandreas.sandberg@arm.com endif() 16311986Sandreas.sandberg@arm.com 16411986Sandreas.sandberg@arm.comelse() 16511986Sandreas.sandberg@arm.com if(PYTHON_MULTIARCH) 16611986Sandreas.sandberg@arm.com set(_PYTHON_LIBS_SEARCH "${PYTHON_LIBDIR}/${PYTHON_MULTIARCH}" "${PYTHON_LIBDIR}") 16711986Sandreas.sandberg@arm.com else() 16811986Sandreas.sandberg@arm.com set(_PYTHON_LIBS_SEARCH "${PYTHON_LIBDIR}") 16911986Sandreas.sandberg@arm.com endif() 17011986Sandreas.sandberg@arm.com #message(STATUS "Searching for Python libs in ${_PYTHON_LIBS_SEARCH}") 17111986Sandreas.sandberg@arm.com # Probably this needs to be more involved. It would be nice if the config 17211986Sandreas.sandberg@arm.com # information the python interpreter itself gave us were more complete. 17311986Sandreas.sandberg@arm.com find_library(PYTHON_LIBRARY 17411986Sandreas.sandberg@arm.com NAMES "python${PYTHON_LIBRARY_SUFFIX}" 17511986Sandreas.sandberg@arm.com PATHS ${_PYTHON_LIBS_SEARCH} 17611986Sandreas.sandberg@arm.com NO_DEFAULT_PATH) 17711986Sandreas.sandberg@arm.com 17811986Sandreas.sandberg@arm.com # If all else fails, just set the name/version and let the linker figure out the path. 17911986Sandreas.sandberg@arm.com if(NOT PYTHON_LIBRARY) 18011986Sandreas.sandberg@arm.com set(PYTHON_LIBRARY python${PYTHON_LIBRARY_SUFFIX}) 18111986Sandreas.sandberg@arm.com endif() 18211986Sandreas.sandberg@arm.comendif() 18311986Sandreas.sandberg@arm.com 18411986Sandreas.sandberg@arm.comMARK_AS_ADVANCED( 18511986Sandreas.sandberg@arm.com PYTHON_LIBRARY 18611986Sandreas.sandberg@arm.com PYTHON_INCLUDE_DIR 18711986Sandreas.sandberg@arm.com) 18811986Sandreas.sandberg@arm.com 18911986Sandreas.sandberg@arm.com# We use PYTHON_INCLUDE_DIR, PYTHON_LIBRARY and PYTHON_DEBUG_LIBRARY for the 19011986Sandreas.sandberg@arm.com# cache entries because they are meant to specify the location of a single 19111986Sandreas.sandberg@arm.com# library. We now set the variables listed by the documentation for this 19211986Sandreas.sandberg@arm.com# module. 19311986Sandreas.sandberg@arm.comSET(PYTHON_INCLUDE_DIRS "${PYTHON_INCLUDE_DIR}") 19411986Sandreas.sandberg@arm.comSET(PYTHON_LIBRARIES "${PYTHON_LIBRARY}") 19511986Sandreas.sandberg@arm.comSET(PYTHON_DEBUG_LIBRARIES "${PYTHON_DEBUG_LIBRARY}") 19611986Sandreas.sandberg@arm.com 19711986Sandreas.sandberg@arm.comfind_package_message(PYTHON 19811986Sandreas.sandberg@arm.com "Found PythonLibs: ${PYTHON_LIBRARY}" 19911986Sandreas.sandberg@arm.com "${PYTHON_EXECUTABLE}${PYTHON_VERSION}") 20011986Sandreas.sandberg@arm.com 20111986Sandreas.sandberg@arm.comset(PYTHONLIBS_FOUND TRUE) 20214299Sbbruce@ucdavis.eduset(PythonLibsNew_FOUND TRUE) 203