X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=5c98696970d496f05a5497fe819285dacda28644;hb=f86cb6a687090154668d2290c21ea6609fda5936;hp=d81b9fe939df218f8d35ee3cd3bf4b2e6b9066d8;hpb=98dbad1214b2c49919802e4e51559604fcb21f9e;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index d81b9fe..5c98696 100644 --- a/ghc/compiler/main/Main.hs +++ b/ghc/compiler/main/Main.hs @@ -1,6 +1,6 @@ -{-# OPTIONS -W -fno-warn-incomplete-patterns #-} +{-# OPTIONS -fno-warn-incomplete-patterns #-} ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.17 2000/11/03 10:42:39 simonmar Exp $ +-- $Id: Main.hs,v 1.59 2001/03/06 11:23:46 simonmar Exp $ -- -- GHC Driver program -- @@ -15,29 +15,38 @@ module Main (main) where #include "HsVersions.h" + +#ifdef GHCI +import InteractiveUI +import Char ( toLower ) +#endif + +#ifndef mingw32_TARGET_OS +import Dynamic +import Posix +#endif + import CompManager +import ParsePkgConf import DriverPipeline import DriverState import DriverFlags import DriverMkDepend import DriverUtil -import DriverPhases ( Phase(..) ) -import CmdLineOpts ( HscLang(..), DynFlags(..), v_Static_hsc_opts ) +import Panic +import DriverPhases ( Phase(..), haskellish_file, objish_file ) +import CmdLineOpts import TmpFiles import Finder ( initFinder ) import CmStaticInfo import Config +import Outputable import Util -import Panic import Concurrent -#ifndef mingw32_TARGET_OS -import Posix -#endif import Directory import IOExts import Exception -import Dynamic import IO import Monad @@ -59,14 +68,12 @@ import Maybe -- new mkdependHS doesn't support all the options that the old one did (-X et al.) -- time commands when run with -v -- split marker --- mkDLL -- java generation -- user ways -- Win32 support: proper signal handling -- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too -- reading the package configuration file is too slow --- -H, -K, -Rghc-timing --- hi-diffs +-- -K ----------------------------------------------------------------------------- -- Differences vs. old driver: @@ -74,25 +81,29 @@ import Maybe -- No more "Enter your Haskell program, end with ^D (on a line of its own):" -- consistency checking removed (may do this properly later) -- removed -noC --- no hi diffs (could be added later) -- no -Ofile ----------------------------------------------------------------------------- -- Main loop main = + -- top-level exception handler: any unrecognised exception is a compiler bug. + 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 PhaseFailed _phase code -> exitWith code Interrupted -> exitWith (ExitFailure 1) - _ -> do hPutStrLn stderr (show (dyn :: BarfKind)) + _ -> 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 unless forget_it $ do - verb <- readIORef v_Verbose + verb <- dynFlag verbosity cleanTempFiles verb ) $ do -- exceptions will be blocked while we clean the temporary files, @@ -108,9 +119,6 @@ main = installHandler sigINT sig_handler Nothing #endif - pgm <- getProgName - writeIORef v_Prog_name pgm - argv <- getArgs -- grab any -B options from the command line first @@ -132,7 +140,7 @@ main = else do am_inplace <- doesFileExist inplace_pkgconfig if am_inplace then writeIORef v_Path_package_config inplace_pkgconfig - else throwDyn (OtherError "can't find package.conf") + else throwDyn (OtherError ("Can't find package.conf in " ++ inplace_pkgconfig)) -- set the location of our various files if am_installed @@ -148,55 +156,82 @@ main = -- read the package configuration conf_file <- readIORef v_Path_package_config - contents <- readFile conf_file - let pkg_details = read contents -- ToDo: faster + r <- parsePkgConf conf_file + case r of { + Left err -> throwDyn (OtherError (showSDoc err)); + Right pkg_details -> do + writeIORef v_Package_details pkg_details -- find the phase to stop after (i.e. -E, -C, -c, -S flags) (flags2, mode, stop_flag) <- getGhcMode argv' writeIORef v_GhcMode mode - -- force lang to "C" if the -C flag was given - case mode of StopBefore HCc -> writeIORef v_Hsc_Lang HscC - _ -> return () + -- Show the GHCi banner? +# ifdef GHCI + when (mode == DoInteractive) $ + hPutStrLn stdout ghciWelcomeMsg +# endif -- process all the other arguments, and get the source files non_static <- processArgs static_flags flags2 [] - -- find the build tag, and re-process the build-specific options - more_opts <- findBuildTag - way_non_static <- processArgs static_flags more_opts [] + -- -O and --interactive are not a good combination + -- ditto with any kind of way selection + orig_opt_level <- readIORef v_OptLevel + when (orig_opt_level > 0 && mode == DoInteractive) $ + do putStr "warning: -O conflicts with --interactive; -O turned off.\n" + writeIORef v_OptLevel 0 + orig_ways <- readIORef v_Ways + when (not (null orig_ways) && mode == DoInteractive) $ + do throwDyn (OtherError + "--interactive can't be used with -prof, -ticky, -unreg or -smp.") + + -- Find the build tag, and re-process the build-specific options. + -- Also add in flags for unregisterised compilation, if + -- GhcUnregisterised=YES. + way_opts <- findBuildTag + let unreg_opts | cGhcUnregisterised == "YES" = unregFlags + | otherwise = [] + way_non_static <- processArgs static_flags (unreg_opts ++ way_opts) [] -- give the static flags to hsc static_opts <- buildStaticHscOpts writeIORef v_Static_hsc_opts static_opts - -- warnings - warn_level <- readIORef v_Warning_opt - - let warn_opts = case warn_level of - W_default -> standardWarnings - W_ -> minusWOpts - W_all -> minusWallOpts - W_not -> [] - - -- build the default DynFlags (these may be adjusted on a per - -- module basis by OPTIONS pragmas and settings in the interpreter). + -- build the default DynFlags (these may be adjusted on a per + -- module basis by OPTIONS pragmas and settings in the interpreter). core_todo <- buildCoreToDo stg_todo <- buildStgToDo - lang <- readIORef v_Hsc_Lang + -- set the "global" HscLang. The HscLang can be further adjusted on a module + -- by module basis, using only the -fvia-C and -fasm flags. If the global + -- HscLang is not HscC or HscAsm, -fvia-C and -fasm have no effect. + opt_level <- readIORef v_OptLevel + + + let lang = case mode of + StopBefore HCc -> HscC + DoInteractive -> HscInterpreted + _other | opt_level >= 1 -> HscC -- -O implies -fvia-C + | otherwise -> defaultHscLang + writeIORef v_DynFlags - DynFlags{ coreToDo = core_todo, - stgToDo = stg_todo, - hscLang = lang, - -- leave out hscOutName for now - flags = [] } + defaultDynFlags{ coreToDo = core_todo, + stgToDo = stg_todo, + hscLang = lang, + -- leave out hscOutName for now + hscOutName = panic "Main.main:hscOutName not set", + + verbosity = case mode of + DoInteractive -> 1 + DoMake -> 1 + _other -> 0, + } -- the rest of the arguments are "dynamic" - srcs <- processArgs dynamic_flags (way_non_static ++ - non_static ++ warn_opts) [] + srcs <- processArgs dynamic_flags (way_non_static ++ non_static) [] -- save the "initial DynFlags" away init_dyn_flags <- readIORef v_DynFlags writeIORef v_InitDynFlags init_dyn_flags @@ -204,18 +239,23 @@ main = -- complain about any unknown flags mapM unknownFlagErr [ f | f@('-':_) <- srcs ] - -- get the -v flag - verb <- readIORef v_Verbose + verb <- dynFlag verbosity - when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version " - hPutStr stderr version_str - hPutStr stderr ", for Haskell 98, compiled by GHC version " - hPutStrLn stderr booter_version) + when (verb >= 2) + (do hPutStr stderr "Glasgow Haskell Compiler, Version " + hPutStr stderr cProjectVersion + hPutStr stderr ", for Haskell 98, compiled by GHC version " + hPutStrLn stderr cBooterVersion) - when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file)) + when (verb >= 2) + (hPutStrLn stderr ("Using package config file: " ++ conf_file)) + + when (verb >= 3) + (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts)) -- initialise the finder - initFinder pkg_details + pkg_avails <- getPackageInfo + initFinder pkg_avails -- mkdependHS is special when (mode == DoMkDependHS) beginMkDependHS @@ -224,33 +264,44 @@ main = 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 - pipelines <- mapM (genPipeline mode stop_flag) srcs - let src_pipelines = zip srcs pipelines - + -- sanity checking o_file <- readIORef v_Output_file - if isJust o_file && mode /= DoLink && length srcs > 1 - then throwDyn (UsageError "can't apply -o option to multiple source files") + ohi <- readIORef v_Output_hi + if length srcs > 1 && (isJust ohi || (isJust o_file && mode /= DoLink && mode /= DoMkDLL)) + then throwDyn (UsageError "can't apply -o or -ohi options to multiple source files") else do if null srcs then throwDyn (UsageError "no input files") else do - -- save the flag state, because this could be modified by OPTIONS - -- pragmas during the compilation, and we'll need to restore it - -- before starting the next compilation. - saved_driver_state <- readIORef v_Driver_state - - let compileFile (src, phases) = do - writeIORef v_Driver_state saved_driver_state + let compileFile src = do 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 not (haskellish_file src) || 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 || mode==DoMkDLL) 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) - + when (mode == DoMkDLL) (doMkDLL o_files) + } -- grab the last -B option on the command line, and -- set topDir to its value. setTopDir :: [String] -> IO [String] @@ -261,12 +312,33 @@ setTopDir args = do some -> writeIORef v_TopDir (drop 2 (last some))) return others -beginMake [] = throwDyn (UsageError "no input files") -beginMake (_:_:_) = throwDyn (UsageError "only one module allowed with --make") -{- -beginMake [mod] = do - state <- cmInit ""{-ToDo:remove-} pkg_details - cmLoadModule state (mkModuleName mod) --} - -beginInteractive srcs = panic "`ghc --interactive' unimplemented" +beginMake :: [String] -> IO () +beginMake fileish_args + = do let (objs, mods) = partition objish_file fileish_args + mapM (add v_Ld_inputs) objs + + case mods of + [] -> throwDyn (UsageError "no input files") + [mod] -> do state <- cmInit Batch + cmLoadModule state mod + return () + _ -> throwDyn (UsageError "only one module allowed with --make") + + +beginInteractive :: [String] -> IO () +#ifndef GHCI +beginInteractive = throwDyn (OtherError "not built for interactive use") +#else +beginInteractive fileish_args + = do minus_ls <- readIORef v_Cmdline_libraries + + let (objs, mods) = partition objish_file fileish_args + libs = map Left objs ++ map Right minus_ls + + state <- cmInit Interactive + case mods of + [] -> interactiveUI state Nothing libs + [mod] -> interactiveUI state (Just mod) libs + _ -> throwDyn (UsageError + "only one module allowed with --interactive") +#endif