Issue1: Which PATH environment variable should be updated? MS Windows or Cygwin .bashrc or others?
but HelloNeon.apk could NOT be generate with operation "Build Project"
However, HelloNeon.apk could be generate with operation "Run As Android Application". and it works well on Emulator 5554:android 2.2.Issue3
Are you still having these problems? The most recent version of DS-5 is v5.13 -- I don't know if it addresses the problems you're having, but it is probably a better place to start from.The DS-5 instructions are referring to the Windows PATH. DS-5 doesn't install or rely on Cygwin. If you've installed it and it is influencing Eclipse then it may be necessarily to ensure things about it's path, too.What messages/errors are you getting?Are you trying to use a real Android target or a virtual one?