if(CMAKE_VERSION VERSION_LESS 3.12)
    find_package(PythonInterp 3.5 QUIET) # Deprecated since version 3.12
    if(PYTHONINTERP_FOUND)
        set(Python3_EXECUTABLE ${PYTHON_EXECUTABLE})
        set(Python3_VERSION ${PYTHON_VERSION_STRING})
    endif()
else()
    find_package(Python3 COMPONENTS Interpreter QUIET)
endif()

if (Python3_EXECUTABLE)
    if(Python3_VERSION VERSION_GREATER_EQUAL 3.5)
        add_custom_target(
          check-whitespace
          ${Python3_EXECUTABLE} ${LAMMPS_TOOLS_DIR}/coding_standard/whitespace.py .
          WORKING_DIRECTORY  ${LAMMPS_DIR}
          COMMENT "Check for whitespace errors")
        add_custom_target(
          fix-whitespace
          ${Python3_EXECUTABLE} ${LAMMPS_TOOLS_DIR}/coding_standard/whitespace.py -f .
          WORKING_DIRECTORY  ${LAMMPS_DIR}
          COMMENT "Fix whitespace errors")
    endif()
endif()