Do we need prebuild?

[huihuang82]

It's not a bug, just some comments.

I did some experiment to check in which case xcode will rebuild imported libraries.

and I found that, xcode will not rebuild the libraries(imported by cocoapod) that doesn't have code change since the last build.

I check this by looking at the build log carefully.

so just want to confirm this & get clear in which situation I need cocoapod-binary.

Thanks!