Re: [Haskell-cafe] automatically exclude unused modules at compile time

2010-02-09 Thread Hong Yang 
I did not use -split-objs.

This option did help after I tried it. Thanks.

Hong

On Mon, Feb 8, 2010 at 11:57 AM, Felipe Lessa wrote:

> On Mon, Feb 08, 2010 at 11:25:13AM -0600, Hong Yang wrote:
> > Can we make GHC a little bit more intelligent to automatically exclude
> > unused modules at compile time as in case 4)? (Am I just too lazy to add
> > several dashes?)
>
> Did you use -split-objs?  Does it help?
>
> --
> Felipe.
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Re: [Haskell-cafe] automatically exclude unused modules at compile time

2010-02-08 Thread Felipe Lessa 
On Mon, Feb 08, 2010 at 11:25:13AM -0600, Hong Yang wrote:
> Can we make GHC a little bit more intelligent to automatically exclude
> unused modules at compile time as in case 4)? (Am I just too lazy to add
> several dashes?)

Did you use -split-objs?  Does it help?

--
Felipe.
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[Haskell-cafe] automatically exclude unused modules at compile time

2010-02-08 Thread Hong Yang 
When I turned on "-Wall" knob at compile time, I got a message:

Warning: Module `System.Cmd' is imported, but nothing from it is used,
   except perhaps instances visible in `System.Cmd'
 To suppress this warning, use: import System.Cmd()

Then I did four experiments as follows at compile time:
1) import System.Environment
2) import System.Environment()
3) import System.Environment(only the functions I used)
4) -- import System.Environment

It turned out that case 1-3) have the size after compilation, and that case
4) has smaller size than the others.

Can we make GHC a little bit more intelligent to automatically exclude
unused modules at compile time as in case 4)? (Am I just too lazy to add
several dashes?)

Thanks,

Hong
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