touch, -- String -> String -> IO ()
copy, -- String -> String -> String -> IO ()
- unDosifyPath, -- String -> String
+ normalisePath, -- FilePath -> FilePath
-- Temporary-file management
setTmpDir,
-- GHC <= 4.08 didn't have rawSystem, and runs into problems with long command
-- lines on mingw32, so we disallow it now.
-#if defined(mingw32_HOST_OS) && (__GLASGOW_HASKELL__ <= 408)
-#error GHC <= 4.08 is not supported for bootstrapping GHC on i386-unknown-mingw32
+#if __GLASGOW_HASKELL__ < 500
+#error GHC >= 5.00 is required for bootstrapping GHC
#endif
#ifndef mingw32_HOST_OS
#if __GLASGOW_HASKELL__ > 504
import qualified System.Posix.Internals
-import System.Posix.Process ( executeFile, getProcessStatus, forkProcess, ProcessStatus(..))
-import System.Posix.Signals ( installHandler, sigCHLD, sigCONT, Handler(..) )
#else
import qualified Posix
-import Posix ( executeFile, getProcessStatus, forkProcess, ProcessStatus(..), installHandler,
- sigCHLD, sigCONT, Handler(..) )
#endif
#else /* Must be Win32 */
import List ( isPrefixOf )
import CString ( CString, peekCString )
#endif
-#ifdef mingw32_HOST_OS
-#if __GLASGOW_HASKELL__ > 504
-import System.Cmd ( rawSystem )
+#if __GLASGOW_HASKELL__ < 601
+import Foreign ( withMany, withArray0, nullPtr, Ptr )
+import CForeign ( CString, withCString, throwErrnoIfMinus1 )
#else
-import SystemExts ( rawSystem )
-#endif
-
-#else /* Not Win32 */
-
-import System ( system )
+import System.Cmd ( rawSystem )
#endif
\end{code}
-- On Win32, consult GetTempPath() for a temp dir.
-- => it first tries TMP, TEMP, then finally the
-- Windows directory(!). The directory is in short-path
- -- form and *does* have a trailing backslash.
+ -- form.
; IO.try (do
let len = (2048::Int)
buf <- mallocArray len
ret <- getTempPath len buf
tdir <-
if ret == 0 then do
- -- failed, consult TEMP.
+ -- failed, consult TMPDIR.
free buf
- getEnv "TMP"
+ getEnv "TMPDIR"
else do
s <- peekCString buf
free buf
return s
- let
- -- strip the trailing backslash (awful, but
- -- we only do this once).
- tmpdir =
- case last tdir of
- '/' -> init tdir
- '\\' -> init tdir
- _ -> tdir
- setTmpDir tmpdir
- return ())
+ setTmpDir tdir)
#endif
-- Check that the package config exists
; return (am_installed, top_dir)
}
where
- -- get_proto returns a Unix-format path (relying on getExecDir to do so too)
+ -- get_proto returns a Unix-format path (relying on getBaseDir to do so too)
get_proto | notNull minusbs
- = return (unDosifyPath (drop 2 (last minusbs))) -- 2 for "-B"
+ = return (normalisePath (drop 2 (last minusbs))) -- 2 for "-B"
| otherwise
- = do { maybe_exec_dir <- getExecDir -- Get directory of executable
+ = do { maybe_exec_dir <- getBaseDir -- Get directory of executable
; case maybe_exec_dir of -- (only works on Windows;
-- returns Nothing on Unix)
Nothing -> throwDyn (InstallationError "missing -B<dir> option")
String -- the filepath/filename portion
| Option String
-showOptions :: [Option] -> String
-showOptions ls = unwords (map (quote.showOpt) ls)
-
-showOpt (FileOption pre f) = pre ++ dosifyPath f
+showOpt (FileOption pre f) = pre ++ platformPath f
showOpt (Option "") = ""
showOpt (Option s) = s
\end{code}
\begin{code}
-setTmpDir dir = writeIORef v_TmpDir dir
+setTmpDir dir = writeIORef v_TmpDir (canonicalise dir)
+ where
+#if !defined(mingw32_HOST_OS)
+ canonicalise p = normalisePath p
+#else
+ -- Canonicalisation of temp path under win32 is a bit more
+ -- involved: (a) strip trailing slash,
+ -- (b) normalise slashes
+ -- (c) just in case, if there is a prefix /cygdrive/x/, change to x:
+ --
+ canonicalise path = normalisePath (xltCygdrive (removeTrailingSlash path))
+
+ -- if we're operating under cygwin, and TMP/TEMP is of
+ -- the form "/cygdrive/drive/path", translate this to
+ -- "drive:/path" (as GHC isn't a cygwin app and doesn't
+ -- understand /cygdrive paths.)
+ xltCygdrive path
+ | "/cygdrive/" `isPrefixOf` path =
+ case drop (length "/cygdrive/") path of
+ drive:xs@('/':_) -> drive:':':xs
+ _ -> path
+ | otherwise = path
+
+ -- strip the trailing backslash (awful, but we only do this once).
+ removeTrailingSlash path =
+ case last path of
+ '/' -> init path
+ '\\' -> init path
+ _ -> path
+#endif
cleanTempFiles :: Int -> IO ()
cleanTempFiles verb = do fs <- readIORef v_FilesToClean
-- runSomething will dos-ify them
-> IO ()
-runSomething phase_name pgm args
- = traceCmd phase_name (concat (intersperse " " (pgm:quoteargs))) $
- do
-#ifndef mingw32_HOST_OS
- mpid <- forkProcess
- exit_code <- case mpid of
- Nothing -> do -- Child
- executeFile pgm True quoteargs Nothing
- exitWith (ExitFailure 127)
- -- NOT REACHED
- return ExitSuccess
- Just child -> do -- Parent
- Just (Exited res) <- getProcessStatus True False child
- return res
-#else
- exit_code <- rawSystem cmd_line
-#endif
- when (exit_code /= ExitSuccess)
- $ throwDyn (PhaseFailed phase_name exit_code)
- return ()
- where
- -- The pgm is already in native format (appropriate dir separators)
- cmd_line = pgm ++ ' ':showOptions args
- -- unwords (pgm : dosifyPaths (map quote args))
- quoteargs = filter (not.null) (map showOpt args)
+runSomething phase_name pgm args = do
+ let real_args = filter notNull (map showOpt args)
+ traceCmd phase_name (concat (intersperse " " (pgm:real_args))) $ do
+ exit_code <- rawSystem pgm real_args
+ if (exit_code /= ExitSuccess)
+ then throwDyn (PhaseFailed phase_name exit_code)
+ else return ()
traceCmd :: String -> String -> IO () -> IO ()
-- a) trace the command (at two levels of verbosity)
handle_exn verb exn = do { when (verb >= 2) (hPutStr stderr "\n")
; when (verb >= 3) (hPutStrLn stderr ("Failed: " ++ cmd_line ++ (show exn)))
; throwDyn (PhaseFailed phase_name (ExitFailure 1)) }
+
+-- -----------------------------------------------------------------------------
+-- rawSystem: run an external command
+
+#if __GLASGOW_HASKELL__ < 601
+
+-- This code is copied from System.Cmd on GHC 6.1.
+
+rawSystem :: FilePath -> [String] -> IO ExitCode
+
+#ifndef mingw32_TARGET_OS
+
+rawSystem cmd args =
+ withCString cmd $ \pcmd ->
+ withMany withCString (cmd:args) $ \cstrs ->
+ withArray0 nullPtr cstrs $ \arr -> do
+ status <- throwErrnoIfMinus1 "rawSystem" (c_rawSystem pcmd arr)
+ case status of
+ 0 -> return ExitSuccess
+ n -> return (ExitFailure n)
+
+foreign import ccall "rawSystem" unsafe
+ c_rawSystem :: CString -> Ptr CString -> IO Int
+
+#else
+
+-- On Windows, the command line is passed to the operating system as
+-- a single string. Command-line parsing is done by the executable
+-- itself.
+rawSystem cmd args = do
+ let cmdline = {-translate-} cmd ++ concat (map ((' ':) . translate) args)
+ -- Urk, don't quote/escape the command name on Windows, because the
+ -- compiler is exceedingly naughty and sometimes uses 'perl "..."'
+ -- as the command name.
+ withCString cmdline $ \pcmdline -> do
+ status <- throwErrnoIfMinus1 "rawSystem" (c_rawSystem pcmdline)
+ case status of
+ 0 -> return ExitSuccess
+ n -> return (ExitFailure n)
+
+translate :: String -> String
+translate str = '"' : foldr escape "\"" str
+ where escape '"' str = '\\' : '"' : str
+ escape '\\' str = '\\' : '\\' : str
+ escape c str = c : str
+
+foreign import ccall "rawSystem" unsafe
+ c_rawSystem :: CString -> IO Int
+
+#endif
+#endif
\end{code}
to the Windows command.
The alternative, of using '/' consistently on Unix and '\' on Windows,
-proved quite awkward. There were a lot more calls to dosifyPath,
+proved quite awkward. There were a lot more calls to platformPath,
and even on Windows we might invoke a unix-like utility (eg 'sh'), which
interpreted a command line 'foo\baz' as 'foobaz'.
\begin{code}
-----------------------------------------------------------------------------
--- Convert filepath into MSDOS form.
+-- Convert filepath into platform / MSDOS form.
-dosifyPaths :: [String] -> [String]
--- dosifyPaths does two things
+-- platformPath does two things
-- a) change '/' to '\'
-- b) remove initial '/cygdrive/'
-unDosifyPath :: String -> String
+normalisePath :: String -> String
-- Just change '\' to '/'
pgmPath :: String -- Directory string in Unix format
#if defined(mingw32_HOST_OS)
-
--------------------- Windows version ------------------
-dosifyPaths xs = map dosifyPath xs
-
-unDosifyPath xs = subst '\\' '/' xs
+normalisePath xs = subst '\\' '/' xs
+platformPath p = subst '/' '\\' p
+pgmPath dir pgm = platformPath dir ++ '\\' : pgm
-pgmPath dir pgm = dosifyPath dir ++ '\\' : pgm
-
-dosifyPath stuff
- = subst '/' '\\' real_stuff
- where
- -- fully convince myself that /cygdrive/ prefixes cannot
- -- really appear here.
- cygdrive_prefix = "/cygdrive/"
-
- real_stuff
- | cygdrive_prefix `isPrefixOf` stuff = dropList cygdrive_prefix stuff
- | otherwise = stuff
-
+subst a b ls = map (\ x -> if x == a then b else x) ls
#else
-
---------------------- Unix version ---------------------
-dosifyPaths ps = ps
-unDosifyPath xs = xs
-pgmPath dir pgm = dir ++ '/' : pgm
-dosifyPath stuff = stuff
+--------------------- Non-Windows version --------------
+normalisePath xs = xs
+pgmPath dir pgm = dir ++ '/' : pgm
+platformPath stuff = stuff
--------------------------------------------------------
#endif
-subst a b ls = map (\ x -> if x == a then b else x) ls
\end{code}
\begin{code}
-----------------------------------------------------------------------------
--- Define getExecDir :: IO (Maybe String)
+-- Define getBaseDir :: IO (Maybe String)
#if defined(mingw32_HOST_OS)
-getExecDir :: IO (Maybe String)
-getExecDir = do let len = (2048::Int) -- plenty, PATH_MAX is 512 under Win32.
+getBaseDir :: IO (Maybe String)
+-- Assuming we are running ghc, accessed by path $()/bin/ghc.exe,
+-- return the path $(stuff). Note that we drop the "bin/" directory too.
+getBaseDir = do let len = (2048::Int) -- plenty, PATH_MAX is 512 under Win32.
buf <- mallocArray len
ret <- getModuleFileName nullPtr buf len
if ret == 0 then free buf >> return Nothing
else do s <- peekCString buf
free buf
- return (Just (reverse (dropList "/bin/ghc.exe" (reverse (unDosifyPath s)))))
-
+ return (Just (rootDir s))
+ where
+ rootDir s = reverse (dropList "/bin/ghc.exe" (reverse (normalisePath s)))
foreign import stdcall "GetModuleFileNameA" unsafe
getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
#else
-getExecDir :: IO (Maybe String) = do return Nothing
+getBaseDir :: IO (Maybe String) = do return Nothing
#endif
#ifdef mingw32_HOST_OS
getProcessID = Posix.getProcessID
#endif
-quote :: String -> String
-quote "" = ""
-quote s = "\"" ++ s ++ "\""
-
\end{code}
projects / ghc-hetmet.git / blobdiff