problem compiling programs with monads with ghc-6.4

Dear all, When I compile simple programs with monads, I receive following error: example18.o(.text+0x2de):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' example18.o(.text+0x422):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' example18.o(.text+0x16f5):fake: undefined reference to `__stginit_ControlziMonadziCont_' example18.o(.data+0xa8):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' example18.o(.data+0xe8):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' When I do ghc E:\apps\ghc-6.4\libHSmtl.a -o example18.exe example18.hs all is fine. For some reasons, libHSmtl.a is not seen by default. What I am missing? I feel this is configuration problem, but I afraid editing "package.conf" or alike, because I'll probably make situation worse. TIA. Best regards, Vadim.

Add -package mtl ? vkonovalov:
Dear all,
When I compile simple programs with monads, I receive following error:
example18.o(.text+0x2de):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' example18.o(.text+0x422):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' example18.o(.text+0x16f5):fake: undefined reference to `__stginit_ControlziMonadziCont_' example18.o(.data+0xa8):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure' example18.o(.data+0xe8):fake: undefined reference to `ControlziMonadziCont_zdfMonadContCont_closure'
When I do ghc E:\apps\ghc-6.4\libHSmtl.a -o example18.exe example18.hs all is fine.
For some reasons, libHSmtl.a is not seen by default.
What I am missing?
I feel this is configuration problem, but I afraid editing "package.conf" or alike, because I'll probably make situation worse.
TIA.
Best regards, Vadim. _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
participants (2)
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dons@cse.unsw.edu.au
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Konovalov, Vadim