message: fix compile on macOS
diff: @@ -440,7 +440,7 @@ add_pkg(odrive_firmware_pkg)
  for _, src_file in pairs(code_files) do
  - obj_file = "build/"..src_file:gsub("/","_")..".o"
  + obj_file = "build/"..src_file:gsub("/","_"):gsub("%.","")..".o"
  object_files += obj_file
  compile(src_file, obj_file)
  end
  