X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=e53ec3fbdda954e73b53ede243725608c573d341;hb=dd9e16729a737dd6dcc44b0ae3c10ba4b2b69b0c;hp=e3e58f0205da1d79c97c0ae00566f6d3cc98a0d1;hpb=374b9f5b4cd059a7b4b28ef2f3bbc18e96d276c9;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index e3e58f0..e53ec3f 100644 --- a/ghc/compiler/main/Main.hs +++ b/ghc/compiler/main/Main.hs @@ -1,10 +1,11 @@ -{-# OPTIONS -W -fno-warn-incomplete-patterns #-} +{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-} + ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.11 2000/10/26 16:51:44 sewardj Exp $ +-- $Id: Main.hs,v 1.105 2002/05/01 09:30:05 simonmar Exp $ -- -- GHC Driver program -- --- (c) Simon Marlow 2000 +-- (c) The University of Glasgow 2002 -- ----------------------------------------------------------------------------- @@ -15,40 +16,68 @@ module Main (main) where #include "HsVersions.h" -import DriverPipeline -import DriverState -import DriverFlags -import DriverMkDepend -import DriverUtil -import DriverPhases ( Phase(..) ) -import CmdLineOpts ( HscLang(..), DynFlags(..), v_Static_hsc_opts ) -import TmpFiles -import Config -import Util -import Panic -import Concurrent -#ifndef mingw32_TARGET_OS -import Posix +#ifdef GHCI +import InteractiveUI #endif -import Directory -import IOExts -import Exception -import Dynamic + +import Finder ( initFinder ) +import CompManager ( cmInit, cmLoadModules, cmDepAnal ) +import HscTypes ( GhciMode(..) ) +import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion ) +import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles ) +import Packages ( showPackages ) + +import DriverPipeline ( doLink, doMkDLL, genPipeline, pipeLoop ) +import DriverState ( buildCoreToDo, buildStgToDo, + findBuildTag, getPackageInfo, unregFlags, + v_GhcMode, v_GhcModeFlag, GhcMode(..), + v_Cmdline_libraries, v_Keep_tmp_files, v_Ld_inputs, + v_OptLevel, v_Output_file, v_Output_hi, + v_Package_details, v_Ways, getPackageExtraGhcOpts, + readPackageConf, verifyOutputFiles + ) +import DriverFlags ( buildStaticHscOpts, + dynamic_flags, processArgs, static_flags) + +import DriverMkDepend ( beginMkDependHS, endMkDependHS ) +import DriverPhases ( Phase(HsPp, Hsc), haskellish_src_file, objish_file ) + +import DriverUtil ( add, handle, handleDyn, later, splitFilename, + unknownFlagsErr, getFileSuffix ) +import CmdLineOpts ( dynFlag, restoreDynFlags, + saveDynFlags, setDynFlags, getDynFlags, dynFlag, + DynFlags(..), HscLang(..), v_Static_hsc_opts, + defaultHscLang + ) +import Outputable +import Util +import Panic ( GhcException(..), panic ) + +-- Standard Haskell libraries import IO +import Directory ( doesFileExist ) +import IOExts ( readIORef, writeIORef ) +import Exception ( throwDyn, Exception(..), + AsyncException(StackOverflow) ) +import System ( getArgs, exitWith, ExitCode(..) ) import Monad import List -import System import Maybe -import CompManager - ------------------------------------------------------------------------------ --- Changes: - --- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a --- dynamic flag whereas -package is a static flag.) +#ifndef mingw32_HOST_OS +import Concurrent ( myThreadId ) +# if __GLASGOW_HASKELL__ < 500 +import Exception ( raiseInThread ) +#define throwTo raiseInThread +# else +import Exception ( throwTo ) +# endif + +import Posix ( Handler(Catch), installHandler, sigINT, sigQUIT ) +import Dynamic ( toDyn ) +#endif ----------------------------------------------------------------------------- -- ToDo: @@ -56,40 +85,51 @@ import CompManager -- 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: -- 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 + hFlush stdout + case exception of + -- an IO exception probably isn't our fault, so don't panic + IOException _ -> hPutStr stderr (show exception) + AsyncException StackOverflow -> + hPutStrLn stderr "stack overflow: use +RTS -K \ + \to increase it" + _other -> 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)) - exitWith (ExitFailure 1) - ) $ do + handleDyn (\dyn -> do + hFlush stdout + case dyn of + PhaseFailed _ code -> exitWith code + Interrupted -> exitWith (ExitFailure 1) + _ -> do hPutStrLn stderr (show (dyn :: GhcException)) + exitWith (ExitFailure 1) + ) $ 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, @@ -97,172 +137,210 @@ main = -- signals. -- install signal handlers +#ifndef mingw32_HOST_OS main_thread <- myThreadId -#ifndef mingw32_TARGET_OS let sig_handler = Catch (throwTo main_thread (DynException (toDyn Interrupted))) installHandler sigQUIT sig_handler Nothing installHandler sigINT sig_handler Nothing #endif - pgm <- getProgName - writeIORef v_Prog_name pgm - - argv <- getArgs - - -- grab any -B options from the command line first - argv' <- setTopDir argv - top_dir <- readIORef v_TopDir - - let installed s = top_dir ++ s - inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s - - installed_pkgconfig = installed ("package.conf") - inplace_pkgconfig = inplace (cGHC_DRIVER_DIR ++ "/package.conf.inplace") - - -- discover whether we're running in a build tree or in an installation, - -- by looking for the package configuration file. - am_installed <- doesFileExist installed_pkgconfig - - if am_installed - then writeIORef v_Path_package_config installed_pkgconfig - 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") - - -- set the location of our various files - if am_installed - then do writeIORef v_Path_usage (installed "ghc-usage.txt") - writeIORef v_Pgm_L (installed "unlit") - writeIORef v_Pgm_m (installed "ghc-asm") - writeIORef v_Pgm_s (installed "ghc-split") - - else do writeIORef v_Path_usage (inplace (cGHC_DRIVER_DIR ++ "/ghc-usage.txt")) - writeIORef v_Pgm_L (inplace cGHC_UNLIT) - writeIORef v_Pgm_m (inplace cGHC_MANGLER) - writeIORef v_Pgm_s (inplace cGHC_SPLIT) + argv <- getArgs + let (minusB_args, argv') = partition (prefixMatch "-B") argv + top_dir <- initSysTools minusB_args - -- read the package configuration - conf_file <- readIORef v_Path_package_config - contents <- readFile conf_file - writeIORef v_Package_details (read contents) - - -- 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 () + -- Read the package configuration + conf_file <- getPackageConfigPath + readPackageConf conf_file -- process all the other arguments, and get the source files - non_static <- processArgs static_flags flags2 [] + non_static <- processArgs static_flags argv' [] + mode <- readIORef v_GhcMode + stop_flag <- readIORef v_GhcModeFlag + + -- -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 (notNull orig_ways && mode == DoInteractive) $ + do throwDyn (UsageError + "--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 = [] + pkg_extra_opts <- getPackageExtraGhcOpts + extra_non_static <- processArgs static_flags + (unreg_opts ++ way_opts ++ pkg_extra_opts) [] - -- find the build tag, and re-process the build-specific options - more_opts <- findBuildTag - _ <- processArgs static_flags more_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 - writeIORef v_DynFlags - DynFlags{ coreToDo = core_todo, - stgToDo = stg_todo, - hscLang = lang, - -- leave out hscOutName for now - flags = [] } + -- 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. + dyn_flags <- getDynFlags + let lang = case mode of + DoInteractive -> HscInterpreted + _other -> hscLang dyn_flags + + setDynFlags (dyn_flags{ coreToDo = core_todo, + stgToDo = stg_todo, + hscLang = lang, + -- leave out hscOutName for now + hscOutName = panic "Main.main:hscOutName not set", + verbosity = 1 + }) -- the rest of the arguments are "dynamic" - srcs <- processArgs dynamic_flags non_static [] + srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) [] + -- save the "initial DynFlags" away - dyn_flags <- readIORef v_DynFlags - writeIORef v_InitDynFlags dyn_flags + saveDynFlags - -- complain about any unknown flags - let unknown_flags = [ f | ('-':f) <- srcs ] - mapM unknownFlagErr unknown_flags + -- perform some checks of the options set / report unknowns. + checkOptions srcs + + verb <- dynFlag verbosity - -- get the -v flag - verb <- readIORef v_Verbose + -- Show the GHCi banner +# ifdef GHCI + when (mode == DoInteractive && verb >= 1) $ + hPutStrLn stdout ghciWelcomeMsg +# endif - 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) + -- Display details of the configuration in verbose mode + 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)) + + pkg_details <- readIORef v_Package_details + showPackages pkg_details + + when (verb >= 3) + (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts)) + + -- initialise the finder + pkg_avails <- getPackageInfo + initFinder pkg_avails -- mkdependHS is special when (mode == DoMkDependHS) beginMkDependHS - -- make is special - when (mode == DoMake) beginMake + -- -ohi sanity checking + ohi <- readIORef v_Output_hi + if (isJust ohi && + (mode == DoMake || mode == DoInteractive || srcs `lengthExceeds` 1)) + then throwDyn (UsageError "-ohi can only be used when compiling a single source file") + else do - -- for each source file, find which phases to run - pipelines <- mapM (genPipeline mode stop_flag) srcs - let src_pipelines = zip srcs pipelines + -- make/interactive require invoking the compilation manager + if (mode == DoMake) then beginMake srcs else do + if (mode == DoInteractive) then beginInteractive srcs else do + -- -o 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") + if (srcs `lengthExceeds` 1 && isJust o_file && mode /= DoLink && mode /= DoMkDLL) + then throwDyn (UsageError "can't apply -o 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 - r <- runPipeline phases src (mode==DoLink) True - writeIORef v_Driver_state saved_driver_state + let compileFile src = do + restoreDynFlags + + exists <- doesFileExist src + when (not exists) $ + throwDyn (CmdLineError ("file `" ++ src ++ "' does not exist")) + + -- 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 (Haskell source only) + let src_and_suff = (src, getFileSuffix src) + let not_hs_file = not (haskellish_src_file src) + pp <- if not_hs_file || mode == StopBefore Hsc || mode == StopBefore HsPp + then return src_and_suff else do +-- hPutStrLn stderr "before" >> hFlush stderr + phases <- genPipeline (StopBefore Hsc) stop_flag + False{-not persistent-} defaultHscLang + src_and_suff +-- hPutStrLn stderr "after" >> hFlush stderr + pipeLoop phases src_and_suff False{-no linking-} False{-no -o flag-} + basename suffix + + -- rest of compilation + hsc_lang <- dynFlag hscLang +-- hPutStrLn stderr ("before-1 " ++ show (pp,mode)) >> hFlush stderr + phases <- genPipeline mode stop_flag True hsc_lang pp +-- hPutStrLn stderr "after" >> hFlush stderr + (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] -setTopDir args = do - let (minusbs, others) = partition (prefixMatch "-B") args - (case minusbs of - [] -> writeIORef v_TopDir clibdir - some -> writeIORef v_TopDir (drop 2 (last some))) - return others -beginMake = panic "`ghc --make' unimplemented" ------------------------------------------------------------------------------ --- compatibility code +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") + _ -> do dflags <- getDynFlags + state <- cmInit Batch + graph <- cmDepAnal state dflags mods + (_, ok, _) <- cmLoadModules state dflags graph + when (not ok) (exitWith (ExitFailure 1)) + return () -#if __GLASGOW_HASKELL__ <= 408 -catchJust = catchIO -ioErrors = justIoErrors -throwTo = raiseInThread -#endif -#ifdef mingw32_TARGET_OS -foreign import "_getpid" getProcessID :: IO Int +beginInteractive :: [String] -> IO () +#ifndef GHCI +beginInteractive = throwDyn (CmdLineError "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 Object objs ++ map DLL minus_ls + + state <- cmInit Interactive + interactiveUI state mods libs #endif + +checkOptions :: [String] -> IO () +checkOptions srcs = do + -- complain about any unknown flags + let unknown_opts = [ f | f@('-':_) <- srcs ] + when (notNull unknown_opts) (unknownFlagsErr unknown_opts) + -- verify that output files point somewhere sensible. + verifyOutputFiles + -- and anything else that it might be worth checking for + -- before kicking of a compilation (pipeline). +