main main main main main

[Jeremy Shaw]

Hello,

If one of the modules you are importing (for example, Fu.NewLogging),
does *not* contain a line at the top like:

> module Fu.NewLogging where 

then I think you will get an error that looks something like that. I
am not sure if this is your problem, but if it is, it is an easy fix
:)

hope this helps,
j.

At Sat, 12 May 2007 22:13:36 +0100,
Frederik Eaton wrote:
> 
> [1  <text/plain; us-ascii (7bit)>]
> Hello,
> 
> I'm suddenly getting the following error when I compile a program:
> 
> bayesian-sets.hs:1:0:
>     The main function `main' is not defined in module `Main'
>     When checking the type of the main function `main'
> 
> I don't know what that means. Perhaps the error could be made more
> human-friendly? Here is the output of 'ghc -v':
> 
> [1]$ ghc -v --make $A.hs -package vectro -lstdc++ -fallow-incoherent-instances
> Glasgow Haskell Compiler, Version 6.6.20070420, for Haskell 98, compiled by GHC version 6.6.20070420
> Using package config file: /home/frederik/arch/i386//lib/ghc-6.6.20070420/package.conf
> Using package config file: /home/frederik/.ghc/i386-linux-6.6.20070420/package.conf
> wired-in package base mapped to base-2.0
> wired-in package rts mapped to rts-1.0
> wired-in package haskell98 mapped to haskell98-1.0
> wired-in package template-haskell mapped to template-haskell-2.0
> Hsc static flags: -static
> *** Chasing dependencies:
> Chasing modules from: bayesian-sets.hs
> Stable obj: []
> Stable BCO: []
> compile: input file bayesian-sets.hs
> Created temporary directory: /tmp/ghc8785_0
> *** Checking old interface for main:Main:
> [1 of 1] Compiling Main             ( bayesian-sets.hs, bayesian-sets.o )
> *** Parser:
> *** Renamer/typechecker:
> 
> bayesian-sets.hs:1:0:
>     The main function `main' is not defined in module `Main'
>     When checking the type of the main function `main'
> *** Deleting temp files:
> Deleting: /tmp/ghc8785_0/ghc8785_0.s
> Warning: deleting non-existent /tmp/ghc8785_0/ghc8785_0.s
> Upsweep partially successful.
> *** Deleting temp files:
> Deleting:
> link(batch): upsweep (partially) failed OR
>    Main.main not exported; not linking.
> *** Deleting temp files:
> Deleting:
> *** Deleting temp dirs:
> Deleting: /tmp/ghc8785_0
> 
> Thanks,
> 
> Frederik
> 
> --
> http://ofb.net/~frederik/
> [2 bayesian-sets.hs <text/x-haskell; us-ascii (7bit)>]
> {-# OPTIONS_GHC -fglasgow-exts -fth #-}
> module Main where
> 
> import Foreign.C.Types
> import Control.Arrow
> import System.Environment
> import Data.Typeable
> 
> import Fu.GenUtil
> import Fu.NewLogging
> import Fu.Prepose
> import Fu.Domain
> import Fu.HList
> 
> import Vector.Sparse
> import Vector.TypeVector
> import Vector.Sparse.Ops
> import Vector.Base
> import Vector.FileIO
> import qualified Vector.Sparse.Wrappers as W
> import Vector.Sparse.Raw
> import Vector.Sparse.RawTypes
> import Vector.Sparse.ArrowUtil
> 
> --type I = CInt
> --type I = CUInt
> --type I = CInt
> --type E = Bool
> 
> type I = CULLong
> type E = Double
> type V = Sparse I E
> 
> type RV = RSV E I
> 
> type SV a = Sparse I E E a
> 
> e0 :: E
> e0 = 1.0
> 
> c :: E
> c = 2
> 
> main :: IO ()
> main = do
>     withLogLevel Normal $ do
>     qsR::RV <- load "data/query-sess-2e6"
>     $(typeVec (__::RV) ("query","session")) qsR $ \ (x_QS::(SV (L query, L session))) -> do
>     putStrLn $ "sum="++show(vsum x_QS)
>     let x_SQ = trans x_QS
>     let mask_Q = mask $ vsum $ vcurry x_QS
>     let qCount = vsum mask_Q
>     let m_S = (vsum $ vcurry x_SQ) /. qCount
>     let alpha_S = c .* m_S
>     let beta_S = c .* (mask m_S - m_S)
> --    let v_S = vsum $ vcurry d_SQ
>     putStrLn $ "(vsum alpha_S, vsum beta_S)="++show (vsum alpha_S, vsum beta_S)
>     putStrLn $ "(nnz alpha_S, nnz beta_S)="++show (nnz alpha_S, nnz beta_S)
>     putStrLn $ "qCount="++show qCount
>     vseq m_S $ vseq x_QS $ vseq alpha_S $ do
>     t <- profile $
>         putStrLn $ "vsum (m_S >@ x_QS)"++show(vsum (m_S >@ x_QS))
>     putStrLn $ "t="++show t
>     -- test about how long computation of q_S will take:
>     t <- profile $
>         putStrLn $ "vsum (m_S + alpha_S)"++show(vsum (m_S + alpha_S))
>     putStrLn $ "t="++show t
>     return ()
> [3  <text/plain; us-ascii (7bit)>]
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