[Haskell-cafe] Modules and a main function

[Brandon Allbery]

On Sat, Aug 27, 2011 at 16:24, michael rice <nowgate at yahoo.com> wrote:

> I'm not sure how to do that. Please demonstrate.
>

If you just compile it normally you have an unexported binding called "main"
which is effectively (and actually, when compiled with optimization)
discarded.  If you do

    ghc --make --main-is GameState GameState.hs

then GHC will use GameState.main as the entry point (instead of Main.main)
and build a program instead of a library.

http://www.haskell.org/ghc/docs/latest/html/users_guide/options-phases.html#options-linker

-- 
brandon s allbery                                      allbery.b at gmail.com
wandering unix systems administrator (available)     (412) 475-9364 vm/sms
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