{-# OPTIONS -fno-warn-incomplete-patterns #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.40 2000/12/18 15:18:11 simonmar Exp $
+-- $Id: Main.hs,v 1.43 2001/01/03 11:13:43 simonmar Exp $
--
-- GHC Driver program
--
main =
-- top-level exception handler: any unrecognised exception is a compiler bug.
- handle (\exception -> hPutStr stderr (show (Panic (show exception)))) $ do
+ handle (\exception -> do hPutStr stderr (show (Panic (show exception)))
+ exitWith (ExitFailure 1)
+ ) $ do
-- all error messages are propagated as exceptions
handleDyn (\dyn -> case dyn of
Interrupted -> exitWith (ExitFailure 1)
_ -> do hPutStrLn stderr (show (dyn :: GhcException))
exitWith (ExitFailure 1)
- ) $ do
+ ) $ do
-- make sure we clean up after ourselves
later (do forget_it <- readIORef v_Keep_tmp_files
if (mode == DoMake) then beginMake srcs else do
if (mode == DoInteractive) then beginInteractive srcs else do
- -- for each source file, find which phases to run
- let lang = hscLang init_dyn_flags
- pipelines <- mapM (genPipeline mode stop_flag True lang) srcs
- let src_pipelines = zip srcs pipelines
-
-- sanity checking
o_file <- readIORef v_Output_file
ohi <- readIORef v_Output_hi
if null srcs then throwDyn (UsageError "no input files") else do
- let compileFile (src, phases) = do
+ let compileFile src = do
writeIORef v_Driver_state saved_driver_state
writeIORef v_DynFlags init_dyn_flags
- r <- runPipeline phases src (mode==DoLink) True
+
+ -- We compile in two stages, because the file may have an
+ -- OPTIONS pragma that affects the compilation pipeline (eg. -fvia-C)
+
+ let (basename, suffix) = splitFilename src
+
+ -- just preprocess
+ pp <- if mode == StopBefore Hsc then return src else do
+ phases <- genPipeline (StopBefore Hsc) stop_flag
+ False{-not persistent-} defaultHscLang src
+ pipeLoop phases src False{-no linking-} False{-no -o flag-}
+ basename suffix
+
+ -- rest of compilation
+ dyn_flags <- readIORef v_DynFlags
+ phases <- genPipeline mode stop_flag True (hscLang dyn_flags) pp
+ r <- pipeLoop phases pp (mode==DoLink) True{-use -o flag-}
+ basename suffix
return r
- o_files <- mapM compileFile src_pipelines
+ o_files <- mapM compileFile srcs
when (mode == DoMkDependHS) endMkDependHS
when (mode == DoLink) (doLink o_files)