If I restart compilation will it pick up where it left off?

Question

I'm building GHC from source but forgot to add the -j3 option to tell it to use both cores on my machine.

If I Ctrl-c and restart the process, will it continue building from the current stage in the process, or will it start all over again?

Answer 1

Yes. Files that have been compiled will not be compiled again.

(sources: Tom's comment and personal experience)