Parallel --make (GHC build times on newer MacBook Pros?)

Thomas Schilling nominolo at
Tue Aug 30 02:24:04 CEST 2011

On 30 August 2011 01:16, Evan Laforge <qdunkan at> wrote:
> Interesting, maybe I misremembered?  Or maybe there was some other guy
> who was trying to parallelize?
> Just out of curiosity, what benefit does a thread-safe ghc provide?  I
> know ghc api users have go to some bother to not call re-entrantly...
> what neat stuff could we do with a re-entrant ghc?  Could it
> eventually lead to an internally parallel ghc or are there deeper
> reasons it's hard to parallelize compilation?  That would be really
> cool, if possible.  In fact, I don't know of any parallel compilers.

Yes, the plan was to eventually have a parallel --make mode.

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