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Restore custom FindPythonLibs.cmake with improvements to fix MSYS2 bug.

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Wayne Stambaugh 11 years ago
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  1. 321
      CMakeModules/FindPythonLibs.cmake

321
CMakeModules/FindPythonLibs.cmake
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# - 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).
#
# You can point to a preferred python install to use by setting the following
# to the point at the root directory of the python install:
#
# PYTHON_ROOT_DIR - The root directory of the python install
#
# 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.)
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 "${_PYTHON_FIND_MAJ_MIN}")
unset(_PYTHON_FIND_OTHER_VERSIONS)
if(PythonLibs_FIND_VERSION_EXACT)
if(_PYTHON_FIND_MAJ_MIN STREQUAL PythonLibs_FIND_VERSION)
set(_PYTHON_FIND_OTHER_VERSIONS "${PythonLibs_FIND_VERSION}")
else()
set(_PYTHON_FIND_OTHER_VERSIONS "${PythonLibs_FIND_VERSION}" "${_PYTHON_FIND_MAJ_MIN}")
endif()
else()
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()
unset(_PYTHON_FIND_MAJ_MIN)
unset(_PYTHON_FIND_MAJ)
else()
set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonLibs_FIND_VERSION}_VERSIONS})
endif()
else()
set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
endif()
# 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 ${_CURRENT_VERSION})
if(WIN32)
if(MINGW)
find_library(PYTHON_DEBUG_LIBRARY
NAMES python{$_CURRENT_VERSION}_d
PATHS
"${PYTHON_ROOT_DIR}"
"c:/python${_CURRENT_VERSION}"
"c:/python${_CURRENT_VERSION_NO_DOTS}"
NO_SYSTEM_ENVIRONMENT_PATH
)
else()
find_library(PYTHON_DEBUG_LIBRARY
NAMES python${_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()
endif()
if(MINGW)
find_library(PYTHON_LIBRARY
NAMES python${_CURRENT_VERSION}
PATHS
"${PYTHON_ROOT_DIR}"
"C:/python"
PATH_SUFFIXES
${_CURRENT_VERSION}
${_CURRENT_VERSION_NO_DOTS}
NO_SYSTEM_ENVIRONMENT_PATH
)
else()
find_library(PYTHON_LIBRARY
NAMES
python${_CURRENT_VERSION_NO_DOTS}
python${_CURRENT_VERSION}mu
python${_CURRENT_VERSION}m
python${_CURRENT_VERSION}u
python${_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
)
endif()
# 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()
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${_CURRENT_VERSION})
endforeach()
endif()
if(MINGW)
find_path(PYTHON_INCLUDE_DIR
NAMES Python.h
PATHS
"${PYTHON_ROOT_DIR}"
"C:/python${_CURRENT_VERSION}"
"C:/python${_CURRENT_VERSION_NOT_DOTS}"
PATH_SUFFIXES
python${_CURRENT_VERSION}
python${_CURRENT_VERSION_NOT_DOTS}
)
else()
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${_CURRENT_VERSION}mu
python${_CURRENT_VERSION}m
python${_CURRENT_VERSION}u
python${_CURRENT_VERSION}
)
endif()
# For backward compatibility, set PYTHON_INCLUDE_PATH.
set(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}")
if(PYTHON_INCLUDE_DIR AND EXISTS "${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()
if(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
break()
endif()
endforeach()
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 ${PREFIX}_FOUND if it has a library.
# Unset this, this prefix doesn't match the module prefix, they are different
# for historical reasons.
unset(PYTHON_FOUND)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PythonLibs
REQUIRED_VARS PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS
VERSION_VAR PYTHONLIBS_VERSION_STRING)
# PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python.
# PYTHON_WRITE_MODULES_HEADER(<filename>) writes a header file you can include
# in your sources to initialize the static python modules
function(PYTHON_ADD_MODULE _NAME )
get_property(_TARGET_SUPPORTS_SHARED_LIBS
GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS)
option(PYTHON_ENABLE_MODULE_${_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()
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 <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()
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()
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