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# - Find the matplotlib libraries
# This module finds IF matplotlib is installed, and sets the following variables
# indicating where it is.
#
# MATPLOTLIB_FOUND - was matplotlib found
# MATPLOTLIB_VERSION - the version of matplotlib found as a string
# MATPLOTLIB_VERSION_MAJOR - the major version number of matplotlib
# MATPLOTLIB_VERSION_MINOR - the minor version number of matplotlib
# MATPLOTLIB_VERSION_PATCH - the patch version number of matplotlib
# MATPLOTLIB_PATH_DIRS - path to the matplotlib include files
IF(Python3_Interpreter_FOUND)
# Try to import matplotlib into Python interpreter. Python
# interpreter was found previously as required package, so
# don't take care about this.
execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
"import matplotlib as m; print(m.__version__); print(m.__path__[0]);"
RESULT_VARIABLE _MATPLOTLIB_SEARCH_SUCCESS
OUTPUT_VARIABLE _MATPLOTLIB_VALUES
ERROR_VARIABLE _MATPLOTLIB_ERROR_VALUE
OUTPUT_STRIP_TRAILING_WHITESPACE)
IF(_MATPLOTLIB_SEARCH_SUCCESS MATCHES 0)
set(MATPLOTLIB_FOUND TRUE)
# Convert the process output into a list
string(REGEX REPLACE ";" "\\\\;" _MATPLOTLIB_VALUES ${_MATPLOTLIB_VALUES})
string(REGEX REPLACE "\n" ";" _MATPLOTLIB_VALUES ${_MATPLOTLIB_VALUES})
list(GET _MATPLOTLIB_VALUES 0 MATPLOTLIB_VERSION)
list(GET _MATPLOTLIB_VALUES 1 MATPLOTLIB_PATH_DIRS)
# Make sure all directory separators are '/'
string(REGEX REPLACE "\\\\" "/" MATPLOTLIB_PATH_DIRS ${MATPLOTLIB_PATH_DIRS})
# Get the major and minor version numbers
string(REGEX REPLACE "\\." ";" _MATPLOTLIB_VERSION_LIST ${MATPLOTLIB_VERSION})
list(GET _MATPLOTLIB_VERSION_LIST 0 MATPLOTLIB_VERSION_MAJOR)
list(GET _MATPLOTLIB_VERSION_LIST 1 MATPLOTLIB_VERSION_MINOR)
list(GET _MATPLOTLIB_VERSION_LIST 2 MATPLOTLIB_VERSION_PATCH)
ELSE()
set(MATPLOTLIB_FOUND FALSE)
ENDIF()
ELSE()
set(MATPLOTLIB_FOUND FALSE)
ENDIF()