Re: Should GHC default to -O1 ?

How much does using ghc without cabal imply a newer programmer? I don't use cabal when trying out small bits of code (maybe I should be using ghci), but am otherwise always using cabal. On Wed, Nov 9, 2011 at 3:18 AM, Duncan Coutts wrote:

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On Tue, Nov 8, 2011 at 3:01 PM, Daniel Fischer wrote:

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On Tuesday 08 November 2011, 17:16:27, Simon Marlow wrote:

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most people know about 1, but I think 2 is probably less well-known. When in the edit-compile-debug cycle it really helps to have -O off, because your compiles will be so much quicker due to both factors 1 &

On 9 November 2011 00:17, Felipe Almeida Lessa wrote: 2.

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Of course. So defaulting to -O1 would mean one has to specify -O0 in the .cabal or Makefile resp. on the command line during development, which certainly is an inconvenience.

AFAIK, Cabal already uses -O1 by default.

Indeed, and cabal check / hackage upload complain if you put -O{n} in your .cabal file.

The recommended method during development is to use:

$ cabal configure -O0

Duncan

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