[Qustion] Correct way to deploy and debug cross-compiled code

[EntnyJill]

1. How can I correctly copy cross-compiled code to target system, for example Raspberry Pi?
   Imagine the situation when we have big project with a lot of dependencies. For example, Boost, OpenCV. And we decided to modify some small file. But how we can avoid copy of all project after cross-compilation?
2. And the next question: how can I attach with debugger to target system after copying of cross-compiled project?