mirror of
https://github.com/triqs/dft_tools
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179 lines
7.4 KiB
CMake
179 lines
7.4 KiB
CMake
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# Copyright Olivier Parcollet 2012
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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#
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# Python settings :
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#
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# This module checks that :
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# - the python interpreter is working and version >= 2.6.5
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# - it has modules : distutils, numpy
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#
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# This module defines the variables
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# - PYTHON_INTERPRETER : name of the python interpreter
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# - PYTHON_INCLUDE_DIRS : include for compilation
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# - PYTHON_NUMPY_INCLUDE_DIR : include for compilation with numpy
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# - PYTHON_LIBRARY : link flags
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# - PYTHON_SITE_PKG : path to the standard packages of the python interpreter
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# - PYTHON_EXTRA_LIBS : libraries which must be linked in when embedding
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# - PYTHON_LINK_FOR_SHARED : linking flags needed when building a shared lib for external modules
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set(PYTHON_MINIMAL_VERSION 2.6.5)
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MESSAGE( STATUS "-------- Python detection -------------")
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# IF PYTHON_INTERPRETER is not defined, try to find a python
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if (NOT PYTHON_INTERPRETER )
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find_program(PYTHON_INTERPRETER python PATHS $ENV{PATH})
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endif (NOT PYTHON_INTERPRETER)
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if (NOT PYTHON_INTERPRETER)
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MESSAGE(FATAL_ERROR "No python interpreter found")
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endif(NOT PYTHON_INTERPRETER)
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MESSAGE (STATUS "Python interpreter ${PYTHON_INTERPRETER}")
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#
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# The function EXEC_PYTHON_SCRIPT executes the_script in python interpreter
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# and set the variable of output_var_name in the calling scope
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#
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FUNCTION ( EXEC_PYTHON_SCRIPT the_script output_var_name)
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EXECUTE_PROCESS(COMMAND ${PYTHON_INTERPRETER} -c "${the_script}"
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OUTPUT_VARIABLE res RESULT_VARIABLE returncode OUTPUT_STRIP_TRAILING_WHITESPACE)
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IF (NOT returncode EQUAL 0)
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MESSAGE(FATAL_ERROR "The script : ${the_script} \n did not run properly in the Python interpreter. Check your python installation.")
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ENDIF (NOT returncode EQUAL 0)
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SET( ${output_var_name} ${res} PARENT_SCOPE)
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ENDFUNCTION (EXEC_PYTHON_SCRIPT)
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#
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# Check the interpreter and its version
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#
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EXEC_PYTHON_SCRIPT ("import sys, string; print sys.version.split()[0]" PYTHON_VERSION)
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STRING(COMPARE GREATER ${PYTHON_MINIMAL_VERSION} ${PYTHON_VERSION} PYTHON_VERSION_NOT_OK)
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IF (PYTHON_VERSION_NOT_OK)
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MESSAGE(FATAL_ERROR "Python intepreter version is ${PYTHON_VERSION} . It should be >= ${PYTHON_MINIMAL_VERSION}")
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ENDIF (PYTHON_VERSION_NOT_OK)
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EXEC_PYTHON_SCRIPT ("import distutils " nulle) # check that distutils is there...
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EXEC_PYTHON_SCRIPT ("import numpy" nulle) # check that numpy is there...
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EXEC_PYTHON_SCRIPT ("import h5py" nulle) # check that h5py is there...
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EXEC_PYTHON_SCRIPT ("import scipy" nulle) # check that scipy is there...
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MESSAGE(STATUS "Python interpreter and modules are ok : version ${PYTHON_VERSION}" )
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#
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# Check for Python include path
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#
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EXEC_PYTHON_SCRIPT ("import distutils ; from distutils.sysconfig import * ; print distutils.sysconfig.get_python_inc()" PYTHON_INCLUDE_DIRS )
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message(STATUS "PYTHON_INCLUDE_DIRS = ${PYTHON_INCLUDE_DIRS}" )
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mark_as_advanced(PYTHON_INCLUDE_DIRS)
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FIND_PATH(TEST_PYTHON_INCLUDE patchlevel.h PATHS ${PYTHON_INCLUDE_DIRS} NO_DEFAULT_PATH)
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if (NOT TEST_PYTHON_INCLUDE)
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message (ERROR "The Python herader files have not been found. Please check that you installed the Python headers and not only the interpreter.")
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endif (NOT TEST_PYTHON_INCLUDE)
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mark_as_advanced(TEST_PYTHON_INCLUDE)
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#
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# include files for numpy
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#
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EXEC_PYTHON_SCRIPT ("import numpy;print numpy.get_include()" PYTHON_NUMPY_INCLUDE_DIR)
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MESSAGE(STATUS "PYTHON_NUMPY_INCLUDE_DIR = ${PYTHON_NUMPY_INCLUDE_DIR}" )
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mark_as_advanced(PYTHON_NUMPY_INCLUDE_DIR)
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#
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# include files for numpy
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#
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EXEC_PYTHON_SCRIPT ("import numpy;print numpy.version.version" PYTHON_NUMPY_VERSION)
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MESSAGE(STATUS "PYTHON_NUMPY_VERSION = ${PYTHON_NUMPY_VERSION}" )
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mark_as_advanced(PYTHON_NUMPY_VERSION)
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#
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# Check for site packages
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#
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EXEC_PYTHON_SCRIPT ("from distutils.sysconfig import * ;print get_python_lib(0,0)"
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PYTHON_SITE_PKG)
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MESSAGE(STATUS "PYTHON_SITE_PKG = ${PYTHON_SITE_PKG}" )
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mark_as_advanced(PYTHON_SITE_PKG)
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#
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# Check for Python library path
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#
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#EXEC_PYTHON_SCRIPT ("import string; from distutils.sysconfig import * ;print string.join(get_config_vars('VERSION'))" PYTHON_VERSION_MAJOR_MINOR)
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EXEC_PYTHON_SCRIPT ("import string; from distutils.sysconfig import *; print '%s/config' % get_python_lib(0,1)" PYTHON_LIBRARY_BASE_PATH)
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EXEC_PYTHON_SCRIPT ("import string; from distutils.sysconfig import *; print 'libpython%s' % string.join(get_config_vars('VERSION'))" PYTHON_LIBRARY_BASE_FILE)
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IF(BUILD_SHARED_LIBS)
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FIND_FILE(PYTHON_LIBRARY NAMES "${PYTHON_LIBRARY_BASE_FILE}.so" PATHS ${PYTHON_LIBRARY_BASE_PATH})
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IF(NOT PYTHON_LIBRARY)
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FIND_FILE(PYTHON_LIBRARY NAMES "${PYTHON_LIBRARY_BASE_FILE}.a" PATHS ${PYTHON_LIBRARY_BASE_PATH})
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ENDIF(NOT PYTHON_LIBRARY)
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ELSE(BUILD_SHARED_LIBS)
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FIND_FILE(PYTHON_LIBRARY NAMES "${PYTHON_LIBRARY_BASE_FILE}.a" PATHS ${PYTHON_LIBRARY_BASE_PATH})
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ENDIF(BUILD_SHARED_LIBS)
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MESSAGE(STATUS "PYTHON_LIBRARY = ${PYTHON_LIBRARY}" )
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mark_as_advanced(PYTHON_LIBRARY)
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#
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# Cython
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#
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EXEC_PYTHON_SCRIPT("from Cython.Compiler import Version as V;print V.version.split('.')[1]" PYTHON_CYTHON_VERSION )
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MESSAGE(STATUS "Found cython 0.${PYTHON_CYTHON_VERSION}.xxx")
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# check version here
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#
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# libraries which must be linked in when embedding
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#
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EXEC_PYTHON_SCRIPT ("from distutils.sysconfig import * ;print (str(get_config_var('LOCALMODLIBS')) + ' ' + str(get_config_var('LIBS'))).strip()"
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PYTHON_EXTRA_LIBS)
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MESSAGE(STATUS "PYTHON_EXTRA_LIBS =${PYTHON_EXTRA_LIBS}" )
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mark_as_advanced(PYTHON_EXTRA_LIBS)
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#
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# Looking for ipython ... (optional)
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# not very useful... in static case, we should not allow ipython anyway I guess...
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EXECUTE_PROCESS(COMMAND ${PYTHON_INTERPRETER} -c "try :\n import IPython\n print 1\nexcept:\n print 0" OUTPUT_VARIABLE TRIQS_IPYTHON_DETECTED RESULT_VARIABLE returncode OUTPUT_STRIP_TRAILING_WHITESPACE)
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if (TRIQS_IPYTHON_DETECTED)
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MESSAGE(STATUS "IPython found")
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else (TRIQS_IPYTHON_DETECTED)
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MESSAGE(STATUS "IPython NOT FOUND ")
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endif (TRIQS_IPYTHON_DETECTED)
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#
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# linking flags needed when embedding (building a shared lib)
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# To BE RETESTED
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#
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#EXEC_PYTHON_SCRIPT ("from distutils.sysconfig import *;print get_config_var('LINKFORSHARED')"
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# PYTHON_LINK_FOR_SHARED)
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#MESSAGE(STATUS "PYTHON_LINK_FOR_SHARED = ${PYTHON_LINK_FOR_SHARED}" )
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#mark_as_advanced(PYTHON_LINK_FOR_SHARED)
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# Correction on Mac
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#IF(APPLE)
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# SET (PYTHON_LINK_FOR_SHARED -u _PyMac_Error -framework Python)
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# SET (PYTHON_LINK_MODULE -bundle -undefined dynamic_lookup)
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#ELSE(APPLE)
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# SET (PYTHON_LINK_MODULE -shared)
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#ENDIF(APPLE)
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set (PYTHONLIBS_FOUND TRUE) #${PYTHON_FOUND})
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# used in BOOST ONLY !!
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FUNCTION(PYTHON_ADD_MODULE _NAME )
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OPTION(PYTHON_ENABLE_MODULE_${_NAME} "Add module ${_NAME}" TRUE)
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OPTION(PYTHON_MODULE_${_NAME}_BUILD_SHARED "Add module ${_NAME} shared" ${BUILD_SHARED_LIBS})
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IF(PYTHON_ENABLE_MODULE_${_NAME})
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IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
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SET(PY_MODULE_TYPE MODULE)
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ELSE(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
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SET(PY_MODULE_TYPE STATIC)
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SET_PROPERTY(GLOBAL APPEND PROPERTY PY_STATIC_MODULES_LIST ${_NAME})
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ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
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SET_PROPERTY(GLOBAL APPEND PROPERTY PY_MODULES_LIST ${_NAME})
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ADD_LIBRARY(${_NAME} ${PY_MODULE_TYPE} ${ARGN})
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# TARGET_LINK_LIBRARIES(${_NAME} ${PYTHON_LIBRARIES})
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ENDIF(PYTHON_ENABLE_MODULE_${_NAME})
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ENDFUNCTION(PYTHON_ADD_MODULE)
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MESSAGE( STATUS "--------------------------------------------")
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