Function generate_config

tools/config.py:172–207

(path)

def generate_config(path):
  if os.path.exists(path):
    exit_with_error(f'config file already exists: `{path}`')

  # Note: repr is used to ensure the paths are escaped correctly on Windows.
  # The full string is replaced so that the template stays valid Python.

  config_data = utils.read_file(path_from_root('tools/config_template.py'))
  config_data = config_data.splitlines()[3:] # remove the initial comment
  config_data = '\n'.join(config_data) + '\n'
  # autodetect some default paths
  llvm_root = os.path.dirname(shutil.which('wasm-ld') or '/usr/bin/wasm-ld')
  config_data = config_data.replace("'{{{ LLVM_ROOT }}}'", repr(llvm_root))

  binaryen_root = os.path.dirname(os.path.dirname(shutil.which('wasm-opt') or '/usr/local/bin/wasm-opt'))
  config_data = config_data.replace("'{{{ BINARYEN_ROOT }}}'", repr(binaryen_root))

  node = shutil.which('node') or shutil.which('nodejs') or 'node'
  config_data = config_data.replace("'{{{ NODE }}}'", repr(node))

  # write
  utils.write_file(path, config_data)

  print('''\
An Emscripten settings file has been generated at:

  %s

It contains our best guesses for the important paths, which are:

  LLVM_ROOT       = %s
  BINARYEN_ROOT   = %s
  NODE_JS         = %s

Please edit the file if any of those are incorrect.\
''' % (path, llvm_root, binaryen_root, node), file=sys.stderr)


def find_config_file():