lldb 3.8 on OSX unable to debug process


I’m building LLDB v3.8 on my osx mac using Unix Makefiles and when I go and test it with the built debugserver, I get the following errors when passing “run”:

error: process exited with status -1 (unable to attach)

I verified that attaching to a process also doesn’t work.

Is there a known issue with building debugserver and lldb on a mac using Unix Makefiles?