CMake/Modules/FindPythonLibs.cmake

258 lines
11 KiB
CMake

# - 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).
#=============================================================================
# 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.)
INCLUDE(CMakeFindFrameworks)
# Search for the python framework on Apple.
CMAKE_FIND_FRAMEWORKS(Python)
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 3.3 3.2 3.1 3.0)
IF(PythonLibs_FIND_VERSION)
IF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
STRING(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonLibs_FIND_VERSION}")
STRING(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}")
UNSET(_PYTHON_FIND_OTHER_VERSIONS)
IF(NOT PythonLibs_FIND_VERSION_EXACT)
FOREACH(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS})
IF(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN)
LIST(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
ENDIF()
ENDFOREACH()
ENDIF(NOT PythonLibs_FIND_VERSION_EXACT)
UNSET(_PYTHON_FIND_MAJ_MIN)
UNSET(_PYTHON_FIND_MAJ)
ELSE(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonLibs_FIND_VERSION}_VERSIONS})
ENDIF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
ELSE(PythonLibs_FIND_VERSION)
SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
ENDIF(PythonLibs_FIND_VERSION)
# Set up the versions we know about, in the order we will search. Always add
# the user supplied additional versions to the front.
SET(_Python_VERSIONS
${Python_ADDITIONAL_VERSIONS}
${_PYTHON_FIND_OTHER_VERSIONS}
)
UNSET(_PYTHON_FIND_OTHER_VERSIONS)
UNSET(_PYTHON1_VERSIONS)
UNSET(_PYTHON2_VERSIONS)
UNSET(_PYTHON3_VERSIONS)
FOREACH(_CURRENT_VERSION ${_Python_VERSIONS})
STRING(REPLACE "." "" _CURRENT_VERSION_NO_DOTS ${_CURRENT_VERSION})
IF(WIN32)
FIND_LIBRARY(PYTHON_DEBUG_LIBRARY
NAMES python${_CURRENT_VERSION_NO_DOTS}_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(WIN32)
FIND_LIBRARY(PYTHON_LIBRARY
NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
PATHS
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
# Avoid finding the .dll in the PATH. We want the .lib.
NO_SYSTEM_ENVIRONMENT_PATH
)
# Look for the static library in the Python config directory
FIND_LIBRARY(PYTHON_LIBRARY
NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
# Avoid finding the .dll in the PATH. We want the .lib.
NO_SYSTEM_ENVIRONMENT_PATH
# This is where the static library is usually located
PATH_SUFFIXES python${_CURRENT_VERSION}/config
)
# For backward compatibility, honour value of PYTHON_INCLUDE_PATH, if
# PYTHON_INCLUDE_DIR is not set.
IF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)
SET(PYTHON_INCLUDE_DIR "${PYTHON_INCLUDE_PATH}" CACHE PATH
"Path to where Python.h is found" FORCE)
ENDIF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)
SET(PYTHON_FRAMEWORK_INCLUDES)
IF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)
FOREACH(dir ${Python_FRAMEWORKS})
SET(PYTHON_FRAMEWORK_INCLUDES ${PYTHON_FRAMEWORK_INCLUDES}
${dir}/Versions/${_CURRENT_VERSION}/include/python${_CURRENT_VERSION})
ENDFOREACH(dir)
ENDIF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)
FIND_PATH(PYTHON_INCLUDE_DIR
NAMES Python.h
PATHS
${PYTHON_FRAMEWORK_INCLUDES}
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
PATH_SUFFIXES
python${_CURRENT_VERSION}
)
# For backward compatibility, set PYTHON_INCLUDE_PATH, but make it internal.
SET(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}" CACHE INTERNAL
"Path to where Python.h is found (deprecated)")
IF(PYTHON_INCLUDE_DIR AND 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 "${python_version_str}")
UNSET(python_version_str)
ENDIF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")
IF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
BREAK()
ENDIF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
ENDFOREACH(_CURRENT_VERSION)
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)
# 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)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibs
REQUIRED_VARS PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS
VERSION_VAR PYTHONLIBS_VERSION_STRING)
# PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python.
# PYTHON_WRITE_MODULES_HEADER(<filename>) 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_${_NAME}_BUILD_SHARED)
SET(PY_MODULE_TYPE MODULE)
ELSE(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
SET(PY_MODULE_TYPE STATIC)
SET_PROPERTY(GLOBAL APPEND PROPERTY PY_STATIC_MODULES_LIST ${_NAME})
ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
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(${_NAME} PROPERTIES SUFFIX ".pyd")
ENDIF(WIN32 AND NOT CYGWIN)
ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
ENDIF(PYTHON_ENABLE_MODULE_${_NAME})
ENDFUNCTION(PYTHON_ADD_MODULE)
FUNCTION(PYTHON_WRITE_MODULES_HEADER _filename)
GET_PROPERTY(PY_STATIC_MODULES_LIST GLOBAL PROPERTY PY_STATIC_MODULES_LIST)
GET_FILENAME_COMPONENT(_name "${_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 <Python.h>
#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(_currentModule ${PY_STATIC_MODULES_LIST})
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(_currentModule ${PY_STATIC_MODULES_LIST})
FILE(APPEND ${_filenameTmp} "void ${_name}_LoadAllPythonModules(void)\n{\n")
FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
FILE(APPEND ${_filenameTmp} " ${_name}_${_currentModule}();\n")
ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
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(PYTHON_WRITE_MODULES_HEADER)