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| # Licensed to the Apache Software Foundation (ASF) under one | |
| # or more contributor license agreements. See the NOTICE file | |
| # distributed with this work for additional information | |
| # regarding copyright ownership. The ASF licenses this file | |
| # to you under the Apache License, Version 2.0 (the | |
| # "License"); you may not use this file except in compliance | |
| # with the License. You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, | |
| # software distributed under the License is distributed on an | |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| # KIND, either express or implied. See the License for the | |
| # specific language governing permissions and limitations | |
| # under the License. | |
| # This module finds the libraries corresponding to the Python 3 interpreter | |
| # and the NumPy package, and sets the following variables: | |
| # - PYTHON_EXECUTABLE | |
| # - PYTHON_INCLUDE_DIRS | |
| # - PYTHON_LIBRARIES | |
| # - PYTHON_OTHER_LIBS | |
| # - NUMPY_INCLUDE_DIRS | |
| if(Python3Alt_FOUND) | |
| return() | |
| endif() | |
| set(Python3Alt_FIND_PACKAGE_OPTIONS) | |
| set(Python3Alt_NumPy_FIND_PACKAGE_OPTIONS) | |
| if(Python3Alt_FIND_VERSION) | |
| list(APPEND Python3Alt_FIND_PACKAGE_OPTIONS ${Python3Alt_FIND_VERSION}) | |
| endif() | |
| if(Python3Alt_FIND_REQUIRED) | |
| list(APPEND Python3Alt_FIND_PACKAGE_OPTIONS REQUIRED) | |
| list(APPEND Python3Alt_NumPy_FIND_PACKAGE_OPTIONS REQUIRED) | |
| endif() | |
| if(Python3Alt_FIND_QUIETLY) | |
| list(APPEND Python3Alt_FIND_PACKAGE_OPTIONS QUIET) | |
| list(APPEND Python3Alt_NumPy_FIND_PACKAGE_OPTIONS QUIET) | |
| endif() | |
| if(CMAKE_VERSION VERSION_LESS 3.18.0) | |
| # We need libpython to be present, so ask for the full "Development" | |
| # component on CMake < 3.18, where "Development.Module" is not | |
| # available. | |
| find_package(Python3 ${Python3Alt_FIND_PACKAGE_OPTIONS} COMPONENTS Interpreter | |
| Development NumPy) | |
| else() | |
| find_package(Python3 ${Python3Alt_FIND_PACKAGE_OPTIONS} | |
| COMPONENTS Interpreter Development.Module NumPy) | |
| endif() | |
| if(NOT Python3_FOUND) | |
| return() | |
| endif() | |
| set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE}) | |
| set(PYTHON_INCLUDE_DIRS ${Python3_INCLUDE_DIRS}) | |
| set(PYTHON_LIBRARIES ${Python3_LIBRARIES}) | |
| set(PYTHON_OTHER_LIBS) | |
| get_target_property(NUMPY_INCLUDE_DIRS Python3::NumPy INTERFACE_INCLUDE_DIRECTORIES) | |
| # CMake's python3_add_library() doesn't apply the required extension suffix, | |
| # detect it ourselves. | |
| # (https://gitlab.kitware.com/cmake/cmake/issues/20408) | |
| execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c" | |
| "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))" | |
| RESULT_VARIABLE _PYTHON_RESULT | |
| OUTPUT_VARIABLE _PYTHON_STDOUT | |
| ERROR_VARIABLE _PYTHON_STDERR) | |
| if(NOT _PYTHON_RESULT MATCHES 0) | |
| if(Python3Alt_FIND_REQUIRED) | |
| message(FATAL_ERROR "Python 3 config failure:\n${_PYTHON_STDERR}") | |
| endif() | |
| endif() | |
| string(STRIP ${_PYTHON_STDOUT} _EXT_SUFFIX) | |
| function(PYTHON_ADD_MODULE name) | |
| python3_add_library(${name} MODULE ${ARGN}) | |
| set_target_properties(${name} PROPERTIES SUFFIX ${_EXT_SUFFIX}) | |
| endfunction() | |
| find_package_handle_standard_args( | |
| Python3Alt REQUIRED_VARS PYTHON_EXECUTABLE PYTHON_INCLUDE_DIRS NUMPY_INCLUDE_DIRS) | |