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#.rst:
#
# Find ``cython`` executable.
#
# This module will set the following variables in your project:
#
# ``CYTHON_EXECUTABLE``
# path to the ``cython`` program
#
# ``CYTHON_VERSION``
# version of ``cython``
#
# ``CYTHON_FOUND``
# true if the program was found
#
# For more information on the Cython project, see https://cython.org/.
#
# *Cython is a language that makes writing C extensions for the Python language
# as easy as Python itself.*
#
#=============================================================================
# Copyright 2011 Kitware, Inc.
#
# Licensed 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.
#=============================================================================
# Use the Cython executable that lives next to the Python executable
# if it is a local installation.
if(Python_EXECUTABLE)
get_filename_component(_python_path ${Python_EXECUTABLE} PATH)
elseif(Python3_EXECUTABLE)
get_filename_component(_python_path ${Python3_EXECUTABLE} PATH)
elseif(DEFINED PYTHON_EXECUTABLE)
get_filename_component(_python_path ${PYTHON_EXECUTABLE} PATH)
endif()
if(DEFINED _python_path)
find_program(CYTHON_EXECUTABLE
NAMES cython cython.bat cython3
HINTS ${_python_path}
DOC "path to the cython executable")
else()
find_program(CYTHON_EXECUTABLE
NAMES cython cython.bat cython3
DOC "path to the cython executable")
endif()
if(CYTHON_EXECUTABLE)
set(CYTHON_version_command ${CYTHON_EXECUTABLE} --version)
execute_process(COMMAND ${CYTHON_version_command}
OUTPUT_VARIABLE CYTHON_version_output
ERROR_VARIABLE CYTHON_version_error
RESULT_VARIABLE CYTHON_version_result
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE)
if(NOT ${CYTHON_version_result} EQUAL 0)
set(_error_msg "Command \"${CYTHON_version_command}\" failed with")
set(_error_msg "${_error_msg} output:\n${CYTHON_version_error}")
message(SEND_ERROR "${_error_msg}")
else()
if("${CYTHON_version_output}" MATCHES "^[Cc]ython version ([^,]+)")
set(CYTHON_VERSION "${CMAKE_MATCH_1}")
else()
if("${CYTHON_version_error}" MATCHES "^[Cc]ython version ([^,]+)")
set(CYTHON_VERSION "${CMAKE_MATCH_1}")
endif()
endif()
endif()
endif()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Cython REQUIRED_VARS CYTHON_EXECUTABLE)
mark_as_advanced(CYTHON_EXECUTABLE)
include(UseCython)
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