tinyusb/test/vendor/ceedling/lib/ceedling/rules_cmock.rake

rule(/#{CMOCK_MOCK_PREFIX}[^\/\\]+#{'\\'+EXTENSION_SOURCE}$/ => [
    proc do |task_name|
      @ceedling[:file_finder].find_header_input_for_mock_file(task_name)
    end  
  ]) do |mock|
  @ceedling[:generator].generate_mock(TEST_SYM, mock.source)
end