title: What is the meaning of AOSP's 'lunch' combinations and what do I need to choose?
body: <p>I am a new comer to Android devices ROM development. Anyway, I am now in the progress of building AOSP to a Chinese device with a 64-bit processor. I am following the menu at source.android.com, and when I am running the &quot;lunch&quot; command, the terminal says: &quot;Lunch menu... pick a combo:&quot;.</p>
  <p>There are two options of which I am debating: aosp_arm-eng and aosp_arm64_eng.</p>
  <p>As I have mentioned, I am building for a 64-bit processor device. Does it mean that I need to pick the aosp_arm64-eng? Because I have tried it, but then the emulator didn't work for some reason...</p>