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# - Macro to find a python module
#
# Usage:
# include (FindPythonModule)
# find_python_module (module [VERSION] [REQUIRED])
#
# The following variables are defined:
# MODULE_FOUND - true if found
# MODULE_LOCATION - directory of the module, or it's library file if binary module
# MODULE_VERSION_STRING - module version, if available through __version__
#
#=============================================================================
# Copyright 2015-2022 EDF-Phimeca
#
# 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 distributed this file outside of CMake, substitute the full
# License text for the above reference.)
macro ( find_python_module module )
string ( TOUPPER ${module} module_upper )
if ( NOT ${module_upper}_FOUND )
# parse arguments
set ( ${module}_FIND_OPTIONAL TRUE )
if ( ${ARGC} EQUAL 2 )
if ( ${ARGV1} MATCHES REQUIRED )
set ( ${module}_FIND_OPTIONAL FALSE )
else ()
set ( ${module}_FIND_VERSION ${ARGV1} )
endif ()
elseif ( ${ARGC} EQUAL 3 )
if ( ${ARGV2} MATCHES REQUIRED )
set ( ${module}_FIND_OPTIONAL FALSE )
endif ()
set ( ${module}_FIND_VERSION ${ARGV1} )
endif ()
# A module's location is usually a directory, but for binary modules it's a .so file.
execute_process ( COMMAND "${PYTHON_EXECUTABLE}" "-c"
"import re, ${module}; print(re.compile('/__init__.py.*').sub('',${module}.__file__))"
RESULT_VARIABLE _${module}_status
OUTPUT_VARIABLE _${module}_location
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE )
if ( NOT _${module}_status )
set ( ${module_upper}_LOCATION ${_${module}_location}
CACHE STRING "Location of Python module ${module}" )
# retrieve version
execute_process ( COMMAND "${PYTHON_EXECUTABLE}" "-c" "import ${module}; print(${module}.__version__)"
RESULT_VARIABLE _${module}_status
OUTPUT_VARIABLE _${module}_version
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE )
set ( _${module_upper}_VERSION_MATCH TRUE )
if ( NOT _${module}_status )
set ( ${module_upper}_VERSION_STRING ${_${module}_version} )
if (${module}_FIND_VERSION)
if (${module}_FIND_VERSION VERSION_GREATER ${module_upper}_VERSION_STRING)
set (_${module_upper}_VERSION_MATCH FALSE)
endif ()
endif ()
mark_as_advanced ( ${module_upper}_VERSION_STRING )
endif ()
endif ()
find_package_handle_standard_args ( ${module} REQUIRED_VARS ${module_upper}_LOCATION
${module}_FIND_OPTIONAL
_${module_upper}_VERSION_MATCH
VERSION_VAR ${module_upper}_VERSION_STRING
)
mark_as_advanced ( ${module_upper}_LOCATION )
endif ( NOT ${module_upper}_FOUND )
endmacro ( find_python_module )
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