libraries/installPackage.hs

   1
   2 import Distribution.PackageDescription
   3 import Distribution.Setup
   4 import Distribution.Simple
   5 import Distribution.Simple.Configure
   6 import Distribution.Simple.LocalBuildInfo
   7 import Distribution.Simple.Utils
   8 import Distribution.Verbosity
   9 import System.Environment
  10 import System.Info
  11
  12 main :: IO ()
  13 main = do args <- getArgs
  14           case args of
  15               pref : ghcpkg : args' ->
  16                   let verbosity = case args' of
  17                               [] -> normal
  18                               ['-':'v':v] ->
  19                                   let m = case v of
  20                                               "" -> Nothing
  21                                               _ -> Just v
  22                                   in flagToVerbosity m
  23                               _ -> error ("Bad arguments: " ++ show args)
  24                   in doit pref ghcpkg verbosity
  25               _ ->
  26                   error "Missing arguments"
  27
  28 doit :: FilePath -> FilePath -> Verbosity -> IO ()
  29 doit pref ghcpkg verbosity =
  30        do let userHooks = simpleUserHooks
  31               copyFlags = CopyFlags {
  32                               copyDest = NoCopyDest,
  33                               copyVerbose = verbosity
  34                           }
  35               registerFlags = RegisterFlags {
  36                                   regUser = MaybeUserGlobal,
  37                                   regGenScript = False,
  38                                   regInPlace = False,
  39                                   regWithHcPkg = Just ghcpkg,
  40                                   regVerbose = verbosity
  41                               }
  42           pdFile <- defaultPackageDesc verbosity
  43           pd <- readPackageDescription verbosity pdFile
  44           lbi <- getPersistBuildConfig
  45           let -- XXX These are almighty hacks, shadowing the base
  46               -- Setup.hs hacks
  47               extraExtraLibs = if (os == "mingw32") &&
  48                                   (pkgName (package pd) == "base")
  49                                then ["wsock32", "msvcrt", "kernel32",
  50                                      "user32", "shell32"]
  51                                else []
  52               mkLib filt = case library pd of
  53                            Just lib ->
  54                                let ems = filter filt $ exposedModules lib
  55                                    lib_bi = libBuildInfo lib
  56                                    lib_bi' = lib_bi {
  57                                                  extraLibs = extraExtraLibs
  58                                                          ++ extraLibs lib_bi
  59                                              }
  60                                in lib {
  61                                       exposedModules = ems,
  62                                       libBuildInfo = lib_bi'
  63                                    }
  64                            Nothing ->
  65                                error "Expected a library, but none found"
  66               -- There's no files for GHC.Prim, so we will fail if we
  67               -- try to copy them
  68               pd_copy = pd { library = Just (mkLib ("GHC.Prim" /=)) }
  69               pd_reg  = pd { library = Just (mkLib (const True)) }
  70               -- When coying, we need to actually give a concrete
  71               -- directory to copy to rather than "$topdir"
  72               lbi_copy = lbi { prefix = pref }
  73               -- When we run GHC we give it a $topdir that includes the
  74               -- $compiler/lib/ part of libsubdir, so we only want the
  75               -- $pkgid part in the package.conf file. This is a bit of
  76               -- a hack, really.
  77               lbi_reg = lbi { libsubdir = "$pkgid" }
  78           (copyHook simpleUserHooks) pd_copy lbi_copy userHooks copyFlags
  79           (regHook simpleUserHooks)  pd_reg  lbi_reg  userHooks registerFlags
  80           return ()
  81