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+#.rst:
+# FindPython3Libs
+# --------------
+#
+# 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:
+#
+# ::
+#
+# PYTHON3LIBS_FOUND - have the Python libs been found
+# PYTHON3_LIBRARIES - path to the python library
+# PYTHON3_INCLUDE_PATH - path to where Python.h is found (deprecated)
+# PYTHON3_INCLUDE_DIRS - path to where Python.h is found
+# PYTHON3_DEBUG_LIBRARIES - path to the debug library (deprecated)
+# PYTHON3LIBS_VERSION_STRING - version of the Python libs found (since CMake 2.8.8)
+#
+#
+#
+# The Python3_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(Python3Libs).
+#
+# If you'd like to specify the installation of Python to use, you should
+# modify the following cache variables:
+#
+# ::
+#
+# PYTHON3_LIBRARY - path to the python library
+# PYTHON3_INCLUDE_DIR - path to where Python.h is found
+#
+# If calling both ``find_package(PythonInterp)`` and
+# ``find_package(Python3Libs)``, call ``find_package(PythonInterp)`` first to
+# get the currently active Python version by default with a consistent version
+# of PYTHON3_LIBRARIES.
+
+#=============================================================================
+# Copyright 2001-2009 Kitware, Inc.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the names of Kitware, Inc., the Insight Software Consortium,
+# nor the names of their contributors may be used to endorse or promote
+# products derived from this software without specific prior written
+# permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#=============================================================================
+
+# Use the executable's path as a hint
+set(_Python3_LIBRARY_PATH_HINT)
+if(PYTHON3_EXECUTABLE)
+ if(WIN32)
+ get_filename_component(_Python3_PREFIX ${PYTHON3_EXECUTABLE} PATH)
+ if(_Python3_PREFIX)
+ set(_Python3_LIBRARY_PATH_HINT ${_Python3_PREFIX}/libs)
+ endif()
+ unset(_Python3_PREFIX)
+ else()
+ get_filename_component(_Python3_PREFIX ${PYTHON3_EXECUTABLE} PATH)
+ get_filename_component(_Python3_PREFIX ${_Python3_PREFIX} PATH)
+ if(_Python3_PREFIX)
+ set(_Python3_LIBRARY_PATH_HINT ${_Python3_PREFIX}/lib)
+ endif()
+ unset(_Python3_PREFIX)
+ endif()
+endif()
+
+include(CMakeFindFrameworks)
+# Search for the python framework on Apple.
+CMAKE_FIND_FRAMEWORKS(Python)
+
+# Save CMAKE_FIND_FRAMEWORK
+if(DEFINED CMAKE_FIND_FRAMEWORK)
+ set(_Python3Libs_CMAKE_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK})
+else()
+ unset(_Python3Libs_CMAKE_FIND_FRAMEWORK)
+endif()
+# To avoid picking up the system Python.h pre-maturely.
+set(CMAKE_FIND_FRAMEWORK LAST)
+
+set(_PYTHON3_VERSIONS 3.6 3.5 3.4 3.3 3.2 3.1 3.0)
+
+if(Python3Libs_FIND_VERSION)
+ if(Python3Libs_FIND_VERSION_COUNT GREATER 1)
+ set(_PYTHON3_FIND_MAJ_MIN "${Python3Libs_FIND_VERSION_MAJOR}.${Python3Libs_FIND_VERSION_MINOR}")
+ unset(_PYTHON3_FIND_OTHER_VERSIONS)
+ if(Python3Libs_FIND_VERSION_EXACT)
+ if(_PYTHON3_FIND_MAJ_MIN STREQUAL Python3Libs_FIND_VERSION)
+ set(_PYTHON3_FIND_OTHER_VERSIONS "${Python3Libs_FIND_VERSION}")
+ else()
+ set(_PYTHON3_FIND_OTHER_VERSIONS "${Python3Libs_FIND_VERSION}" "${_PYTHON3_FIND_MAJ_MIN}")
+ endif()
+ else()
+ foreach(_PYTHON3_V ${_PYTHON${Python3Libs_FIND_VERSION_MAJOR}_VERSIONS})
+ if(NOT _PYTHON3_V VERSION_LESS _PYTHON3_FIND_MAJ_MIN)
+ list(APPEND _PYTHON3_FIND_OTHER_VERSIONS ${_PYTHON3_V})
+ endif()
+ endforeach()
+ endif()
+ unset(_PYTHON3_FIND_MAJ_MIN)
+ else()
+ set(_PYTHON3_FIND_OTHER_VERSIONS ${_PYTHON${Python3Libs_FIND_VERSION_MAJOR}_VERSIONS})
+ endif()
+else()
+ set(_PYTHON3_FIND_OTHER_VERSIONS ${_PYTHON3_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.
+# If FindPythonInterp has already found the major and minor version,
+# insert that version between the user supplied versions and the stock
+# version list.
+set(_Python3_VERSIONS ${Python3_ADDITIONAL_VERSIONS})
+if(DEFINED PYTHON3_VERSION_MAJOR AND DEFINED PYTHON3_VERSION_MINOR)
+ list(APPEND _Python3_VERSIONS ${PYTHON3_VERSION_MAJOR}.${PYTHON3_VERSION_MINOR})
+endif()
+list(APPEND _Python3_VERSIONS ${_PYTHON3_FIND_OTHER_VERSIONS})
+
+unset(_PYTHON3_FIND_OTHER_VERSIONS)
+unset(_PYTHON3_VERSIONS)
+
+foreach(_CURRENT_VERSION ${_Python3_VERSIONS})
+ string(REPLACE "." "" _CURRENT_VERSION_NO_DOTS ${_CURRENT_VERSION})
+ if(WIN32)
+ find_library(PYTHON3_DEBUG_LIBRARY
+ NAMES python${_CURRENT_VERSION_NO_DOTS}_d python
+ HINTS ${_Python3_LIBRARY_PATH_HINT}
+ PATHS
+ [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_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()
+
+ set(PYTHON3_FRAMEWORK_LIBRARIES)
+ if(Python3_FRAMEWORKS AND NOT PYTHON3_LIBRARY)
+ foreach(dir ${Python3_FRAMEWORKS})
+ list(APPEND PYTHON3_FRAMEWORK_LIBRARIES
+ ${dir}/Versions/${_CURRENT_VERSION}/lib)
+ endforeach()
+ endif()
+ find_library(PYTHON3_LIBRARY
+ NAMES
+ python${_CURRENT_VERSION_NO_DOTS}
+ python${_CURRENT_VERSION}mu
+ python${_CURRENT_VERSION}m
+ python${_CURRENT_VERSION}u
+ python${_CURRENT_VERSION}
+ HINTS
+ ${_Python3_LIBRARY_PATH_HINT}
+ PATHS
+ ${PYTHON3_FRAMEWORK_LIBRARIES}
+ [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_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(PYTHON3_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
+ )
+
+ # Don't search for include dir until library location is known
+ if(PYTHON3_LIBRARY)
+
+ # Use the library's install prefix as a hint
+ set(_Python3_INCLUDE_PATH_HINT)
+ get_filename_component(_Python3_PREFIX ${PYTHON3_LIBRARY} PATH)
+ get_filename_component(_Python3_PREFIX ${_Python3_PREFIX} PATH)
+ if(_Python3_PREFIX)
+ set(_Python3_INCLUDE_PATH_HINT ${_Python3_PREFIX}/include)
+ endif()
+ unset(_Python3_PREFIX)
+
+ # Add framework directories to the search paths
+ set(PYTHON3_FRAMEWORK_INCLUDES)
+ if(Python3_FRAMEWORKS AND NOT PYTHON3_INCLUDE_DIR)
+ foreach(dir ${Python3_FRAMEWORKS})
+ list(APPEND PYTHON3_FRAMEWORK_INCLUDES
+ ${dir}/Versions/${_CURRENT_VERSION}/include)
+ endforeach()
+ endif()
+
+ find_path(PYTHON3_INCLUDE_DIR
+ NAMES Python.h
+ HINTS
+ ${_Python3_INCLUDE_PATH_HINT}
+ PATHS
+ ${PYTHON3_FRAMEWORK_INCLUDES}
+ [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_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 PYTHON3_INCLUDE_PATH.
+ set(PYTHON3_INCLUDE_PATH "${PYTHON3_INCLUDE_DIR}")
+
+ if(PYTHON3_INCLUDE_DIR AND EXISTS "${PYTHON3_INCLUDE_DIR}/patchlevel.h")
+ file(STRINGS "${PYTHON3_INCLUDE_DIR}/patchlevel.h" python3_version_str
+ REGEX "^#define[ \t]+PY_VERSION[ \t]+\"[^\"]+\"")
+ string(REGEX REPLACE "^#define[ \t]+PY_VERSION[ \t]+\"([^\"]+)\".*" "\\1"
+ PYTHON3LIBS_VERSION_STRING "${python3_version_str}")
+ unset(python3_version_str)
+ endif()
+
+ if(PYTHON3_LIBRARY AND PYTHON3_INCLUDE_DIR)
+ break()
+ endif()
+endforeach()
+
+unset(_Python3_INCLUDE_PATH_HINT)
+unset(_Python3_LIBRARY_PATH_HINT)
+
+mark_as_advanced(
+ PYTHON3_DEBUG_LIBRARY
+ PYTHON3_LIBRARY
+ PYTHON3_INCLUDE_DIR
+)
+
+# We use PYTHON3_INCLUDE_DIR, PYTHON3_LIBRARY and PYTHON3_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(PYTHON3_INCLUDE_DIRS "${PYTHON3_INCLUDE_DIR}")
+set(PYTHON3_DEBUG_LIBRARIES "${PYTHON3_DEBUG_LIBRARY}")
+
+# These variables have been historically named in this module different from
+# what SELECT_LIBRARY_CONFIGURATIONS() expects.
+set(PYTHON3_LIBRARY_DEBUG "${PYTHON3_DEBUG_LIBRARY}")
+set(PYTHON3_LIBRARY_RELEASE "${PYTHON3_LIBRARY}")
+include(SelectLibraryConfigurations)
+SELECT_LIBRARY_CONFIGURATIONS(PYTHON3)
+# 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(PYTHON3_FOUND)
+
+# Restore CMAKE_FIND_FRAMEWORK
+if(DEFINED _Python3Libs_CMAKE_FIND_FRAMEWORK)
+ set(CMAKE_FIND_FRAMEWORK ${_Python3Libs_CMAKE_FIND_FRAMEWORK})
+ unset(_Python3Libs_CMAKE_FIND_FRAMEWORK)
+else()
+ unset(CMAKE_FIND_FRAMEWORK)
+endif()
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Python3Libs
+ REQUIRED_VARS PYTHON3_LIBRARIES PYTHON3_INCLUDE_DIRS
+ VERSION_VAR PYTHON3LIBS_VERSION_STRING)
+
+# PYTHON3_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python.
+# PYTHON3_WRITE_MODULES_HEADER(<filename>) writes a header file you can include
+# in your sources to initialize the static python modules
+function(PYTHON3_ADD_MODULE _NAME )
+ get_property(_TARGET_SUPPORTS_SHARED_LIBS
+ GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS)
+ option(PYTHON3_ENABLE_MODULE_${_NAME} "Add module ${_NAME}" TRUE)
+ option(PYTHON3_MODULE_${_NAME}_BUILD_SHARED
+ "Add module ${_NAME} shared" ${_TARGET_SUPPORTS_SHARED_LIBS})
+
+ # Mark these options as advanced
+ mark_as_advanced(PYTHON3_ENABLE_MODULE_${_NAME}
+ PYTHON3_MODULE_${_NAME}_BUILD_SHARED)
+
+ if(PYTHON3_ENABLE_MODULE_${_NAME})
+ if(PYTHON3_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} ${PYTHON3_LIBRARIES})
+
+ if(PYTHON3_MODULE_${_NAME}_BUILD_SHARED)
+ set_target_properties(${_NAME} PROPERTIES PREFIX "${PYTHON3_MODULE_PREFIX}")
+ if(WIN32 AND NOT CYGWIN)
+ set_target_properties(${_NAME} PROPERTIES SUFFIX ".pyd")
+ endif()
+ endif()
+
+ endif()
+endfunction()
+
+function(PYTHON3_WRITE_MODULES_HEADER _filename)
+
+ get_property(PY_STATIC_MODULES_LIST GLOBAL PROPERTY PY_STATIC_MODULES_LIST)
+
+ get_filename_component(_name "${_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 ${_filenameTmp} "extern void init${PYTHON3_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[]=\"${PYTHON3_MODULE_PREFIX}${_currentModule}\"; return PyImport_AppendInittab(name, init${PYTHON3_MODULE_PREFIX}${_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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