Difference between revisions of "Cabal"
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(Added link "Cabal Setup file examples") |
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== Information for developers == |
== Information for developers == |
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*[[How to write a Haskell program]] |
*[[How to write a Haskell program]] |
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| + | *[[Cabal/Developer-FAQ|FAQ: Frequently Asked Questions of package authors]] |
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*[[Upgrading packages]] |
*[[Upgrading packages]] |
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*[[Package versioning policy]] |
*[[Package versioning policy]] |
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*[[CabalFind]] - finding Cabal packages on the web (now superseded by [http://hackage.haskell.org/ Hackage]) |
*[[CabalFind]] - finding Cabal packages on the web (now superseded by [http://hackage.haskell.org/ Hackage]) |
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*[[Cabal-make]] - automation based on makefiles |
*[[Cabal-make]] - automation based on makefiles |
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| − | == Building Dlls on Windows with Cabal == |
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| − | Cabal does not currently support building dlls on windows out of the box. Some details about why can be found here: |
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| − | http://www.haskell.org/ghc/docs/6.4.2/html/users_guide/packages.html |
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| − | http://www.haskell.org/ghc/docs/6.4.2/html/users_guide/win32-dlls.html |
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| − | This means that we have to do a bit of hackery to get Cabal to build a dll from a library. As long as we build a single DLL from the entire project the dll should behave as expected. Using the Setup.lhs listed below and following the directions listed above (the second link) I was able to use Visual Haskell to build a dll which I could load into Visual Basic for testing. |
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| − | The following Setup.lhs should do the trick for most projects which consist of a single library which needs to be built as a dll. If you need to specify a dll export file you'll need to modify the function <tt>cmd</tt> to take this into account. Another possible addition is specifying a static dll. Check the ghc manual above. |
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| − | <haskell> |
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| − | #! /usr/bin/runghc |
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| − | > import Distribution.Simple |
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| − | > import Distribution.Simple.LocalBuildInfo |
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| − | > import Distribution.PackageDescription |
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| − | > import System.Cmd |
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| − | > import System.Directory |
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| − | > import Data.List |
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| − | > |
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| − | > |
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| − | > main = defaultMainWithHooks (defaultUserHooks { postBuild = buildDll }) |
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| − | > where |
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| − | > buildDll _ _ pkg info = do putStrLn "Building Dll..." |
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| − | > setCurrentDirectory (buildDir info) |
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| − | > let buildCmd = cmd pkg info |
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| − | > putStrLn buildCmd |
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| − | > system buildCmd |
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| − | > let dll = dllFile pkg |
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| − | > let cpDllCmd = "cp " ++ dll ++ " " ++ (name pkg) ++ "\\" ++ dll |
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| − | > putStrLn cpDllCmd |
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| − | > system cpDllCmd |
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| − | > ghcExe :: LocalBuildInfo -> String |
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| − | > ghcExe info = "\"" ++ (compilerPath (compiler info)) ++ "\"" |
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| − | > mainOFile :: PackageDescription -> String |
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| − | > mainOFile pd = "HS" ++ (name pd) ++ "-" ++ (showVersion (pkgVersion (package pd))) ++ ".o" |
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| − | > cmd :: PackageDescription -> LocalBuildInfo -> String |
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| − | > cmd pd i = (ghcExe i) ++ " --mk-dll -o " ++ (dllFile pd) ++ " " ++ (mainOFile pd) ++ " " ++ (packages i) |
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| − | > packages :: LocalBuildInfo -> String |
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| − | > packages i = foldl1 (\x y -> x ++ " " ++ y) (map showPackage (packageDeps i)) |
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| − | > showPackage :: PackageIdentifier -> String |
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| − | > showPackage pi = "-package " ++ showPackageId pi |
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| − | > name :: PackageDescription -> String |
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| − | > name = pkgName . package |
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| − | > dllFile :: PackageDescription -> String |
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| − | > dllFile pd = (name pd) ++ ".dll" |
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| − | </haskell> |
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[[Category:Tools]] |
[[Category:Tools]] |
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Revision as of 08:14, 13 May 2010
The Haskell Cabal:
- The Common Architecture for Building Applications and Libraries
Information for users
- How to install a Cabal package
- FAQ: Frequently Asked Questions
- Cabal-Install - tool that greatly simplifies installation of Cabal packages
Information for developers
- How to write a Haskell program
- FAQ: Frequently Asked Questions of package authors
- Upgrading packages
- Package versioning policy
- Creating Debian packages from Cabal package
- Adding data files using Cabal
- Cabal Setup file examples
Related contributed tools
- CabalFind - finding Cabal packages on the web (now superseded by Hackage)
- Cabal-make - automation based on makefiles