Why Haskell ghc does not work, but runghc works well? -

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Why Haskell ghc does not work, but runghc works well? -

one code work runghc, can not compile same 1 ghc command. why?

below minimal code , environment: https://gist.github.com/1588756

works well:

$ runghc cat.hs

can not compile:

$ ghc cat.hs -o cat

macbook air, max os x snow leopard

the .cs extension shown in paste wrong;1 rename file cat.hs , it'll work fine.

this error message:

ld: warning: ignoring file cat.cs, file built unsupported file format not architecture beingness linked (i386)

occurs when pass file ghc doesn't know how handle; passes on straight linker, ignores it doesn't know, either. :)

1 @ to the lowest degree until ghc gets c# support...

haskell ghc

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