[Haskell-cafe] Stupid question about Cabal file
Hi, Excuse me in advance if this is a trivial question, but I have been unable to find (understand?) the answer in Cabal's documentation. My issue is simple : I build a Cabal package named, let's say, foo. That package is a library (libHSfoo.a, something like that), which exposes its Foo.Bar and Foobar modules. I wrote the cabal file, register it, everything seems fine. The issue comes when I try to use that package when compiling a main program, like this : ghc -package foo MyMain.hs [other options] I get an error about the compiler not finding the interface files Foobar.hi and Bar.hi, as I have import Bar and import Foo.Bar in my MyMain.hs file. Of course, I could add -l flags to point to the .hi files that I used to compile my package, but I get the well-known issue about the fact that the package's names of the interface files (which were compiled with the -package-name foo option) are not the correct ones (Bad interface file: ../foo/Foobar.hi, Something is amiss; requested module main:Foobar differs from name found in the interface file foo:Foobar) ; and that solution is ugly anyway. So far, I found some Cabal documentation talking about the import-dirs property, but I did not manage to make it work, I mean, my package does not seems to include the interface files. I am sure, on the other hand, that it is possible :) Sincerely yours, Fernand ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Stupid question about Cabal file
Am Donnerstag, 26. Juni 2008 14:01 schrieb Fernand: Hi, Excuse me in advance if this is a trivial question, but I have been unable to find (understand?) the answer in Cabal's documentation. My issue is simple : I build a Cabal package named, let's say, foo. That package is a library (libHSfoo.a, something like that), which exposes its Foo.Bar and Foobar modules. I wrote the cabal file, register it, everything seems fine. The issue comes when I try to use that package when compiling a main program, like this : ghc -package foo MyMain.hs [other options] I get an error about the compiler not finding the interface files Foobar.hi and Bar.hi, as I have import Bar and import Foo.Bar in my MyMain.hs file. Of course, I could add -l flags to point to the .hi files that I used to compile my package, but I get the well-known issue about the fact that the package's names of the interface files (which were compiled with the -package-name foo option) are not the correct ones (Bad interface file: ../foo/Foobar.hi, Something is amiss; requested module main:Foobar differs from name found in the interface file foo:Foobar) ; and that solution is ugly anyway. So far, I found some Cabal documentation talking about the import-dirs property, but I did not manage to make it work, I mean, my package does not seems to include the interface files. I am sure, on the other hand, that it is possible :) Sincerely yours, Fernand Did you create your package using Cabal, i.e. have a module Setup.(l)hs in the same directory as the .cabal file and then runhaskell Setup.hs configure --prefix=WhereYouWantIt runhaskell Setup.hs build runhaskell Setup.hs haddock (optionally) runhaskell Setup.hs install ? Then you shouldn't even need the -package option to use it, ghc-pkg would know where to find the interface files. Cheers, Daniel ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Stupid question about Cabal file
Daniel Fischer пишет: Did you create your package using Cabal, i.e. have a module Setup.(l)hs in the same directory as the .cabal file and then runhaskell Setup.hs configure --prefix=WhereYouWantIt runhaskell Setup.hs build runhaskell Setup.hs haddock (optionally) runhaskell Setup.hs install ? Then you shouldn't even need the -package option to use it, ghc-pkg would know where to find the interface files. Cheers, Daniel No, I did not, because I actually inherited a large Makefile with huge dependencies and twisted built options. If using Setup is the right (and only) way to create the package, I will then try it. thank you, Fernand ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Stupid question about Cabal file
Am Donnerstag, 26. Juni 2008 14:56 schrieb Fernand: Daniel Fischer пишет: Did you create your package using Cabal, i.e. have a module Setup.(l)hs in the same directory as the .cabal file and then runhaskell Setup.hs configure --prefix=WhereYouWantIt runhaskell Setup.hs build runhaskell Setup.hs haddock (optionally) runhaskell Setup.hs install ? Then you shouldn't even need the -package option to use it, ghc-pkg would know where to find the interface files. Cheers, Daniel No, I did not, because I actually inherited a large Makefile with huge dependencies and twisted built options. If using Setup is the right (and only) way to create the package, I will then try it. thank you, Fernand If it's a complicated build, you should certainly take a close look at the Cabal user guide, because then you will probably need more than main = defaultMain in your Setup.hs. On the other hand, the GHC user's guide should also contain some sections on building and registering packages. The Cabal / Setup way is intended to be the simplest and standard way to build packages, but it's not the only one and won't be for a long time. Cheers, Daniel ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Stupid question about Cabal file
I had a look at the Distribution.Make import, which may be the answer. Thank you for pointing the GHC documentation : I found a way to have the build process work, but after having patched my local package.conf file by hand, and installed manually the interfaces files accordingly. I now just need to understand how to obtain the same result using make, I think. Haskelly yours, Fernand Daniel Fischer пишет: If it's a complicated build, you should certainly take a close look at the Cabal user guide, because then you will probably need more than main = defaultMain in your Setup.hs. On the other hand, the GHC user's guide should also contain some sections on building and registering packages. The Cabal / Setup way is intended to be the simplest and standard way to build packages, but it's not the only one and won't be for a long time. Cheers, Daniel ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
