mechvel:
> Dear GHC developers,
>
> Has -O any meaning in ghc-6.8.1-candidate ?
>
> I build docon under ghc-6.8.1-candidate under -O and
> with skipping it (the line of -O commented out in docon.cabal).
>
> And it installs the .a library of the same size,
> and the test running takes the same time.
>
By default cabal uses ghc -O to build projects, so you won't see any
difference if you comment it out of the cabal file. You will however
if you explicitly turn off optimisations:
ghc-options: -Onot
I'd recommend using -O2 these days, particularly for a library like
docon where performance matters.
ghc-options: -O2
For best results.
-- Don
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