[Haskell-cafe] Creating DLLs with GHC
mattcbro at earthlink.net
Wed Sep 27 18:37:12 EDT 2006
> I am having some difficulty with creating a dynamic link library using
> GHC on windows XP.
> I am attempting to follow the example in
> though I have a binary build of ghc 6.5
> My problem (I think) is that some of my Haskell source files link to an
> external C library also contained in a DLL.
> I generate my Haskell object files when I compile my Haskell executable.
> I then attempt to use the object files in a ghc compiler statement like
> ghc --mk-dll -o netsim.dll ExternLib.o ExternLib_stub.o dllNet.o src1.o
> src1_stub.o src2.o -optl-lmatrixstack -optl-L"."
> My external C library is in matrixstack.dll and it has a corresponding
> static link stub library matrixstack.lib in the same directory as all
> the sources. It has references in one of the sources (say src1.hs).
> Unfortunately I get a host of undefined references to basically all the
> functions in matrixstack.dll and also some undefined references of the
> Parsefile.o:ghc2996_0.hc:(.text+0x130): undefined reference to
> Parsefile.o:ghc2996_0.hc:(.text+0x220): undefined reference to
> Parsefile.o:ghc2996_0.hc:(.text+0x24a): undefined reference to
> Parsefile.o:ghc2996_0.hc:(.text+0x29c): undefined reference to
> This appears to be coming from unsatisfied references to
> Text.ParserCombinators.Parsec, which I thought was a standard library.
> I note that my stand alone haskell executable links just fine and runs
> What am I missing to make this work?
> Haskell-Cafe mailing list
> Haskell-Cafe at haskell.org
I have solved one issue here. Apparently my matrixstack.lib was corrupted.
I am not sure how this happened. Recompiling this library seems to have
resolved the problem concerning undefined links. Sorry for the diversion
and I do appreciate the help offered.
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