Indeed, adding the non-exposed modules to the other-modules fixed it. Thanks Allan!
Cheers, Peter -----Original Message----- From: Allan Clark [mailto:[EMAIL PROTECTED] Sent: Saturday, August 25, 2007 2:28 PM To: Peter Verswyvelen Subject: Re: [Haskell-cafe] How to fix linker errors when creating a package using cabal Peter Verswyvelen wrote: > I'm trying to make a package of Ben.Lippmeier's very nice ANUPlot graphics > library (http://cs.anu.edu.au/people/Ben.Lippmeier) > > IMHO this would be a great contribution to the Haskell library, it's very > clean code for newbies :) > > I created the following cabal file: > > name: Plot > version: 1.1 > license: AllRightsReserved > maintainer: [EMAIL PROTECTED] > exposed-modules: > Graphics.Plot.Display, > Graphics.Plot.Picture, > Graphics.Plot.Primitive, > Graphics.Plot.Render, > Graphics.Plot.Colors, > Graphics.Plot.Util, > Graphics.Plot.RenderState, > Graphics.Plot.Animate, > Graphics.Plot.View, > Graphics.Plot.Wrapper, > Graphics.Plot > Build-Depends: base, OpenGL, GLUT > ghc-options: -fglasgow-exts > > and then tried > runhaskell Setup.hs configure > runhaskell Setup.hs build > runhaskell Setup.hs install > > which all seemed to work fine (see log below). > > However, when building an example that uses that package, I get a lot of > linker errors (see log below) > > Is this because I configured the cabal files incorrectly, or do I have to > adjust the module sources so they explicitly export the missing symbols? > > Thanks, > Peter > [ snip ] > Files\Haskell\Plot-1.1\ghc-6.6.1/libHSPlot-1.1.a(Wrapper.o)(.text+0x2f1):fak > e: undefined reference to > `Plotzm1zi1_GraphicsziPlotziCallback_Display_con_info' > Hi, I'm not cabal expert, but basically I had a similar problem, and I fixed it by adding a missing module in the 'exposed-modules' part. Basically where is con_info defined, it's probably in a module which isn't exposed. If so then either put it in the 'exposed-modules' section or if you do not wish to expose it then maybe you could try putting it in a 'other-modules' section. regards allan _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
