code: def add_system_aubio(ext):
      # use pkg-config to find aubio's location
      aubio_version = get_aubio_version()
      add_packages(["aubio = " + aubio_version], ext)
      if "aubio" not in ext.libraries:
          print(
              "Info: aubio "
              + aubio_version
              + " was not found by pkg-config"
          )
      else:
          print(
              "Info: using system aubio "
              + aubio_version
              + " found in "
              + " ".join(ext.library_dirs)
          )
  
imports: import sys, os, glob, subprocess
  import distutils, distutils.command.clean, distutils.dir_util
  from gen_external import generate_external, header, output_path
  from this_version import get_aubio_version
  from distutils.command.build_ext import build_ext
label_desc: Use image node_id 7 for calling a global function with example usage: add_system_aubio(ext) without return types