-ghcToolDir :: String
-prependToolDir :: String -> IO String
-#if defined(mingw32_TARGET_OS) && defined(MINIMAL_UNIX_DEPS)
-ghcToolDir = unsafePerformIO $ do
- bs <- getEnv "GHC_TOOLDIR" `IO.catch` (\ _ -> return "")
- case bs of
- "" -> return bs
- ls ->
- let
- term = last ls
- bs'
- | term `elem` ['/', '\\'] = bs
- | otherwise = bs ++ ['/']
- in
- return bs'
-
-prependToolDir x = return (dosifyPath (ghcToolDir ++ x))
-#else
-ghcToolDir = ""
-prependToolDir x = return x
-#endif
-
-appendInstallDir :: String -> IO String
-appendInstallDir cmd =
- case ghcToolDir of
- "" -> return cmd
- _ -> return (unwords [cmd, '-':'B':ghcToolDir])
-
--- convert filepath into MSDOS form.
-dosifyPath :: String -> String
-#if defined(mingw32_TARGET_OS) && defined(MINIMAL_UNIX_DEPS)
-dosifyPath stuff = subst '/' '\\' real_stuff
- where
- -- fully convince myself that /cygdrive/ prefixes cannot
- -- really appear here.
- cygdrive_prefix = "/cygdrive/"
-
- real_stuff
- | "/cygdrive/" `isPrefixOf` stuff = drop (length cygdrive_prefix) stuff
- | otherwise = stuff
-
- subst a b ls = map (\ x -> if x == a then b else x) ls
-#else
-dosifyPath x = x
-#endif
-