# - 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). # # If you'd like to specify the installation of Python to use, you should modify # the following cache variables: # PYTHON_LIBRARY - path to the python library # PYTHON_INCLUDE_DIR - path to where Python.h is found #============================================================================= # 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.) # Note by Nikolaus Demmel 28.03.2014: My contributions are licensend under the # same as CMake (BSD). My adaptations are in part based # https://github.com/qgis/QGIS/tree/master/cmake which has the following # copyright note: # Copyright (c) 2007, Simon Edwards # Redistribution and use is allowed according to the terms of the BSD license. # For details see the accompanying COPYING-CMAKE-SCRIPTS file. if(NOT DEFINED PYTHON_INCLUDE_DIR) if(DEFINED PYTHON_INCLUDE_PATH) # For backward compatibility, repect PYTHON_INCLUDE_PATH. set(PYTHON_INCLUDE_DIR "${PYTHON_INCLUDE_PATH}" CACHE PATH "Path to where Python.h is found" FORCE) else() set(PYTHON_INCLUDE_DIR "" CACHE PATH "Path to where Python.h is found" FORCE) endif() endif() if(EXISTS "${PYTHON_INCLUDE_DIR}" AND EXISTS "${PYTHON_LIBRARY}") if(EXISTS "${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() else() 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 3.6 3.5 3.4 3.3 3.2 3.1 3.0) unset(_PYTHON_FIND_OTHER_VERSIONS) if(PythonLibs_FIND_VERSION) if(PythonLibs_FIND_VERSION_COUNT GREATER 1) set(_PYTHON_FIND_MAJ_MIN "${PythonLibs_FIND_VERSION_MAJOR}.${PythonLibs_FIND_VERSION_MINOR}") if(NOT PythonLibs_FIND_VERSION_EXACT) foreach(_PYTHON_V ${_PYTHON${PythonLibs_FIND_VERSION_MAJOR}_VERSIONS}) if(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN) if(NOT _PYTHON_V STREQUAL PythonLibs_FIND_VERSION) list(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V}) endif() endif() endforeach() endif() unset(_PYTHON_FIND_MAJ_MIN) else() set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonLibs_FIND_VERSION_MAJOR}_VERSIONS}) endif() else() # add an empty version to check the `python` executable first in case no version is requested set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS}) endif() unset(_PYTHON1_VERSIONS) unset(_PYTHON2_VERSIONS) unset(_PYTHON3_VERSIONS) # Set up the versions we know about, in the order we will search. Always add # the user supplied additional versions to the front. # If FindPythonInterp has already found the major and minor version, # insert that version between the user supplied versions and the stock # version list. # If no specific version is requested or suggested by PythonInterp, always look # for "python" executable first set(_PYTHON_VERSIONS ${PythonLibs_FIND_VERSION} ${PythonLibs_ADDITIONAL_VERSIONS} ) if(DEFINED PYTHON_VERSION_MAJOR AND DEFINED PYTHON_VERSION_MINOR) list(APPEND _PYTHON_VERSIONS ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}) endif() if (NOT _PYTHON_VERSIONS) set(_PYTHON_VERSIONS ";") # empty entry at the front makeing sure we search for "python" first endif() list(APPEND _PYTHON_VERSIONS ${_PYTHON_FIND_OTHER_VERSIONS}) unset(_PYTHON_FIND_OTHER_VERSIONS) message(STATUS "Looking for versions: ${_PYTHON_VERSIONS}") FIND_FILE(_FIND_LIB_PYTHON_PY FindLibPython.py PATHS ${CMAKE_MODULE_PATH} ${CMAKE_ROOT}/Modules) if(NOT _FIND_LIB_PYTHON_PY) message(FATAL_ERROR "Could not find required file 'FindLibPython.py'") endif() unset(PYTHONLIBS_VERSION_STRING) foreach(_CURRENT_VERSION IN LISTS _PYTHON_VERSIONS) STRING(REGEX REPLACE "^([0-9]+).*$" "\\1" _VERSION_MAJOR "${_CURRENT_VERSION}") STRING(REGEX REPLACE "^[0-9]+\\.([0-9]+).*$" "\\1" _VERSION_MINOR "${_CURRENT_VERSION}") set(_PYTHON_NAMES ${PYTHON_EXECUTABLE} python) if (_CURRENT_VERSION MATCHES "^[0-9]+.*$") list(APPEND _PYTHON_NAMES "python${_VERSION_MAJOR}") if (_CURRENT_VERSION MATCHES "^[0-9]+\\.[0-9].*$") list(APPEND _PYTHON_NAMES "python${_VERSION_MAJOR}.${_VERSION_MINOR}") endif() endif() message(STATUS "Looking for python version '${_CURRENT_VERSION}' by checking executables: ${_PYTHON_NAMES}.") foreach(_CURRENT_PYTHON_NAME IN LISTS _PYTHON_NAMES) unset(_PYTHON_EXECUTABLE CACHE) find_program(_PYTHON_EXECUTABLE ${_CURRENT_PYTHON_NAME} PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]) if(_PYTHON_EXECUTABLE) EXECUTE_PROCESS( COMMAND "${_PYTHON_EXECUTABLE}" "${_FIND_LIB_PYTHON_PY}" OUTPUT_VARIABLE _PYTHON_CONFIG RESULT_VARIABLE _PYTHON_CONFIG_RESULT ERROR_QUIET) if(NOT ${_PYTHON_CONFIG_RESULT} AND (NOT ${_PYTHON_CONFIG} STREQUAL "")) STRING(REGEX REPLACE ".*\nmajor_version:([0-9]+).*$" "\\1" _PYTHON_MAJOR_VERSION ${_PYTHON_CONFIG}) STRING(REGEX REPLACE ".*\nminor_version:([0-9]+).*$" "\\1" _PYTHON_MINOR_VERSION ${_PYTHON_CONFIG}) STRING(REGEX REPLACE ".*\npatch_version:([0-9]+).*$" "\\1" _PYTHON_PATCH_VERSION ${_PYTHON_CONFIG}) STRING(REGEX REPLACE ".*\nshort_version:([^\n]+).*$" "\\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_DIR ${_PYTHON_CONFIG}) STRING(REGEX REPLACE ".*\npy_lib_dir:([^\n]+).*$" "\\1" _PYTHON_LIBRARY_DIR ${_PYTHON_CONFIG}) STRING(REGEX REPLACE ".*\nexec_prefix:(^\n+).*$" "\\1" _PYTHON_PREFIX ${_PYTHON_CONFIG}) if ("${_CURRENT_VERSION}" STREQUAL "" OR "${_CURRENT_VERSION}" STREQUAL "${_PYTHON_MAJOR_VERSION}" OR "${_CURRENT_VERSION}" STREQUAL "${_PYTHON_SHORT_VERSION}" OR "${_CURRENT_VERSION}" STREQUAL "${_PYTHON_LONG_VERSION}") message(STATUS "Found executable ${_PYTHON_EXECUTABLE} with suitable version ${_PYTHON_LONG_VERSION}") if(NOT EXISTS "${PYTHON_INCLUDE_DIR}") set(PYTHON_INCLUDE_DIR "${_PYTHON_INCLUDE_DIR}") endif() if(NOT EXISTS "${PYTHON_LIBRARY}") set(_PYTHON_SHORT_VERSION_NO_DOT "${_PYTHON_MAJOR_VERSION}${_PYTHON_MINOR_VERSION}") set(_PYTHON_LIBRARY_NAMES python${_PYTHON_SHORT_VERSION} python${_PYTHON_SHORT_VERSION_NO_DOT} python${_PYTHON_SHORT_VERSION}m python${_PYTHON_SHORT_VERSION_NO_DOT}m) FIND_LIBRARY(PYTHON_LIBRARY NAMES ${_PYTHON_LIBRARY_NAMES} PATH_SUFFIXES "python${_PYTHON_SHORT_VERSION}/config" "python${_PYTHON_SHORT_VERSION_NO_DOT}/config" PATHS ${_PYTHON_LIBRARY_DIR} ${_PYTHON_PREFIX}/lib ${_PYTHON_PREFIX}/libs ${_PYTHON_LIBRARY_DIR}/x86_64-linux-gnu/ NO_DEFAULT_PATH) if(WIN32) find_library(PYTHON_DEBUG_LIBRARY NAMES python${_PYTHON_SHORT_VERSION_NO_DOT}_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() endif() set(PYTHONLIBS_VERSION_STRING ${_PYTHON_LONG_VERSION}) if(_PYTHON_PATCH_VERSION STREQUAL "0") # it's called "Python 2.7", not "2.7.0" string(REGEX REPLACE "\\.0$" "" PYTHONLIBS_VERSION_STRING "${PYTHONLIBS_VERSION_STRING}") endif() break() else() message(STATUS "Found executable ${_PYTHON_EXECUTABLE} with UNsuitable version ${_PYTHON_LONG_VERSION}") endif() # version ok else() message(WARNING "Found executable ${_PYTHON_EXECUTABLE}, but could not extract version info.") endif() # could extract config endif() # found executable endforeach() # python names if (PYTHONLIBS_VERSION_STRING) break() endif() endforeach() # python versions endif() unset(_PYTHON_NAMES) unset(_PYTHON_VERSIONS) unset(_PYTHON_EXECUTABLE CACHE) unset(_PYTHON_MAJOR_VERSION) unset(_PYTHON_MINOR_VERSION) unset(_PYTHON_PATCH_VERSION) unset(_PYTHON_SHORT_VERSION) unset(_PYTHON_LONG_VERSION) unset(_PYTHON_LIBRARY_DIR) unset(_PYTHON_INCLUDE_DIR) unset(_PYTHON_PREFIX) unset(_PYTHON_SHORT_VERSION_NO_DOT) unset(_PYTHON_LIBRARY_NAMES) # For backward compatibility, set PYTHON_INCLUDE_PATH. set(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}") 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(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake) SELECT_LIBRARY_CONFIGURATIONS(PYTHON) if(PYTHON_LIBRARY AND NOT PYTHON_LIBRARIES) set(PYTHON_LIBRARIES "${PYTHON_LIBRARY}") endif() # 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) include(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibs REQUIRED_VARS PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS VERSION_VAR PYTHONLIBS_VERSION_STRING) # PYTHON_ADD_MODULE( src1 src2 ... srcN) is used to build modules for python. # PYTHON_WRITE_MODULES_HEADER() 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() set(PY_MODULE_TYPE STATIC) set_property(GLOBAL APPEND PROPERTY PY_STATIC_MODULES_LIST ${_NAME}) endif() 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(${_NAME} PROPERTIES SUFFIX ".pyd") endif() endif() endif() endfunction() function(PYTHON_WRITE_MODULES_HEADER _filename) get_property(PY_STATIC_MODULES_LIST GLOBAL PROPERTY PY_STATIC_MODULES_LIST) get_filename_component(_name "${_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 #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() 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() file(APPEND ${_filenameTmp} "void ${_name}_LoadAllPythonModules(void)\n{\n") foreach(_currentModule ${PY_STATIC_MODULES_LIST}) file(APPEND ${_filenameTmp} " ${_name}_${_currentModule}();\n") endforeach() 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()