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# (c) https://github.com/dev-cafe/autocmake/blob/master/AUTHORS.md
# licensed under BSD-3: https://github.com/dev-cafe/autocmake/blob/master/LICENSE
#.rst:
#
# Detects Python libraries and headers.
# Detection is done basically by hand as the proper CMake package
# will not find libraries and headers matching the interpreter version.
#
# Dependencies::
#
# python_interpreter - Sets the Python interpreter for headers and libraries detection
#
# Variables used::
#
# PYTHONINTERP_FOUND - Was the Python executable found
#
# Variables defined::
#
# PYTHONLIBS_FOUND - have the Python libs been found
# PYTHON_LIBRARIES - path to the python library
# PYTHON_INCLUDE_DIRS - path to where Python.h is found
# PYTHONLIBS_VERSION_STRING - version of the Python libs found (since CMake 2.8.8)
if(PYTHONINTERP_FOUND)
# Get Python include path from Python interpreter
execute_process(COMMAND "${PYTHON_EXECUTABLE}" -c
"import distutils.sysconfig, sys; sys.stdout.write(distutils.sysconfig.get_python_inc())"
OUTPUT_VARIABLE _PYTHON_INCLUDE_PATH
RESULT_VARIABLE _PYTHON_INCLUDE_RESULT)
# Get Python library path from interpreter
execute_process(COMMAND "${PYTHON_EXECUTABLE}" -c
"from distutils.sysconfig import get_config_var; import sys; sys.stdout.write(get_config_var('LIBDIR'))"
OUTPUT_VARIABLE _PYTHON_LIB_PATH
RESULT_VARIABLE _PYTHON_LIB_RESULT)
set(PYTHON_INCLUDE_DIR ${_PYTHON_INCLUDE_PATH} CACHE PATH "Path to a directory")
set(_PYTHON_VERSION "${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}")
set(_PYTHON_VERSION_NO_DOTS "${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR}")
find_library(PYTHON_LIBRARY
NAMES
python${_PYTHON_VERSION_NO_DOTS}
python${_PYTHON_VERSION}mu
python${_PYTHON_VERSION}m
python${_PYTHON_VERSION}u
python${_PYTHON_VERSION}
NO_DEFAULT_PATH
HINTS
"${_PYTHON_LIB_PATH}"
DOC "Path to Python library file."
)
if (NOT EXISTS "${PYTHON_LIBRARY}")
# redo with default paths
find_library(PYTHON_LIBRARY
NAMES
python${_PYTHON_VERSION_NO_DOTS}
python${_PYTHON_VERSION}mu
python${_PYTHON_VERSION}m
python${_PYTHON_VERSION}u
python${_PYTHON_VERSION}
HINTS
"${_PYTHON_LIB_PATH}"
DOC "Path to Python library file."
)
endif()
mark_as_advanced(CLEAR PYTHON_EXECUTABLE)
mark_as_advanced(FORCE PYTHON_LIBRARY)
mark_as_advanced(FORCE PYTHON_INCLUDE_DIR)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PythonLibs
REQUIRED_VARS
PYTHON_LIBRARY
PYTHON_INCLUDE_DIR
PYTHON_EXECUTABLE)
if(NOT PYTHONLIBS_FOUND)
message(FATAL_ERROR "Could NOT find PythonLibs - did you install the python-dev package?")
endif()
# Hook-up script variables to cache variables
set(PYTHON_LIBRARIES ${PYTHON_LIBRARY})
set(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIR})
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