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###############################################################################
# Top contributors (to current version):
# Daniel Larraz
#
# This file is part of the cvc5 project.
#
# Copyright (c) 2009-2025 by the authors listed in the file AUTHORS
# in the top-level source directory and their institutional affiliations.
# All rights reserved. See the file COPYING in the top-level source
# directory for licensing information.
# #############################################################################
#
# Find Cython
# Cython_FOUND - found Cython Python module
##
macro(get_cython_version)
execute_process(
COMMAND "${Python_EXECUTABLE}" -c "import Cython; print(Cython.__version__)"
RESULT_VARIABLE Cython_VERSION_CHECK_RESULT
OUTPUT_VARIABLE Cython_VERSION
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE
)
endmacro()
get_cython_version()
if (Cython_FIND_REQUIRED)
set(Cython_FIND_MODE FATAL_ERROR)
else()
set(Cython_FIND_MODE STATUS)
endif()
if (Cython_VERSION_CHECK_RESULT EQUAL 0)
set(Cython_FOUND TRUE)
message(STATUS "Found Cython version: ${Cython_VERSION}")
if (DEFINED Cython_FIND_VERSION)
if(Cython_FIND_VERSION_EXACT)
if (NOT (Cython_VERSION VERSION_EQUAL ${Cython_FIND_VERSION}))
if(ENABLE_AUTO_DOWNLOAD)
message(STATUS
"Installing module Cython==${Cython_FIND_VERSION}"
)
execute_process(
COMMAND
${Python_EXECUTABLE} -m pip install Cython==${Cython_FIND_VERSION}
RESULT_VARIABLE CYTHON_INSTALL_CMD_EXIT_CODE
)
if(CYTHON_INSTALL_CMD_EXIT_CODE)
message(${Cython_FIND_MODE}
"Could not install Cython==${Cython_FIND_VERSION}")
else()
get_cython_version()
endif()
else()
message(${Cython_FIND_MODE}
"Cython version == ${Cython_FIND_VERSION} is required, "
"but found version ${Cython_VERSION}")
endif()
endif()
else()
if (Cython_VERSION VERSION_LESS ${Cython_FIND_VERSION})
if(ENABLE_AUTO_DOWNLOAD)
message(STATUS "Upgrading module Cython")
execute_process(COMMAND
${Python_EXECUTABLE} -m pip install Cython -U
RESULT_VARIABLE CYTHON_INSTALL_CMD_EXIT_CODE
)
if(CYTHON_INSTALL_CMD_EXIT_CODE)
message(${Cython_FIND_MODE}
"Could not install Cython >= ${Cython_FIND_VERSION}")
else()
get_cython_version()
endif()
else()
message(${Cython_FIND_MODE}
"Cython version >= ${Cython_FIND_VERSION} is required, "
"but found version ${Cython_VERSION}")
endif()
endif()
endif()
endif()
else()
set(Cython_FOUND FALSE)
if(ENABLE_AUTO_DOWNLOAD)
message(STATUS "Installing module Cython")
execute_process(
COMMAND ${Python_EXECUTABLE} -m pip install Cython
RESULT_VARIABLE CYTHON_INSTALL_CMD_EXIT_CODE)
if(CYTHON_INSTALL_CMD_EXIT_CODE)
message(${Cython_FIND_MODE} "Could not install module Cython")
else()
set(Cython_FOUND TRUE)
get_cython_version()
endif()
else()
message(${Cython_FIND_MODE}
"Could not find module Cython for Python "
"version ${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}. "
"Make sure to install Cython for this Python version "
"via \n`${Python_EXECUTABLE} -m pip install Cython'.\n"
"or use --auto-download to let us install it for you.\n"
"Note: You need to have pip installed for this Python version.")
endif()
endif()
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