Thanks Lemmih. I already fixed this error. The module 
declaration in my Main file was giving it a wrong 
name (not Main).
Thank you.

Lemmih <lemmih@gmail.com> escreveu:

On 1/18/06, Tays Soares wrote:
> I'm trying to run the following sequence on ghc 6.4:
> > ghc -fglasgow-exts --make Main
>
> > ghc -o exec Main.o Exemplo1.o
>
> But I always get this error message after the second command:
> /usr/lib/ghc-6.4/libHSrts.a(Main.o)(.text+0xe): In function `main':
> : undefined reference to `__stginit_ZCMain'
> /usr/lib/ghc-6.4/libHSrts.a(Main.o)(.text+0x28): In function `main':
> : undefined reference to `ZCMain_main_closure'
> collect2: ld returned 1 exit status
>
> Please, does anybody know what can I do to fix it?

Does your main module contain a function called "main"? Does "ghc
-fglasgow-exts --make Main -o exec" work?

--
Friendly,
Lemmih