[microtonal]

Yep, its asks it for files with the 'com.apple.quarantine' flag, which is attached to downloaded files.

You can see its value with:

  xattr -p com.apple.quarantine <filename>

And remove it with:

  xattr -d com.apple.quarantine <filename>

Binaries/application bundles that roll out of your linker/xcodebuild do not have that attribute. Hence, no bugging :).