X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=7da0074e2c7536b24455c740cb388426620ef6ad;hb=3a223cd2811d46295048b3a2dab11403ca291b20;hp=3f81b8816bee38d7aeb29880d4123919cd3117a3;hpb=943fd134e2c2f2d59c36cdc88799301c4a18575c;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index 3f81b88..7da0074 100644 --- a/ghc/compiler/main/Main.hs +++ b/ghc/compiler/main/Main.hs @@ -1,10 +1,11 @@ -{-# OPTIONS -fno-warn-incomplete-patterns #-} +{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-} + ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.42 2001/01/02 15:30:57 simonmar Exp $ +-- $Id: Main.hs,v 1.131 2003/07/21 15:14:18 ross Exp $ -- -- GHC Driver program -- --- (c) Simon Marlow 2000 +-- (c) The University of Glasgow 2002 -- ----------------------------------------------------------------------------- @@ -17,73 +18,74 @@ module Main (main) where #ifdef GHCI -import Interpreter -import InteractiveUI +import InteractiveUI( ghciWelcomeMsg, interactiveUI ) #endif -#ifndef mingw32_TARGET_OS -import Dynamic -import Posix -#endif -import CompManager -import DriverPipeline -import DriverState -import DriverFlags -import DriverMkDepend -import DriverUtil -import Panic -import DriverPhases ( Phase(..) ) -import CmdLineOpts ( HscLang(..), DynFlags(..), v_Static_hsc_opts ) -import TmpFiles -import Finder ( initFinder ) -import CmStaticInfo -import Config +import CompManager ( cmInit, cmLoadModules, cmDepAnal ) +import HscTypes ( GhciMode(..) ) +import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion ) +import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles, + normalisePath ) +import Packages ( showPackages, getPackageConfigMap, basePackage, + haskell98Package + ) +import DriverPipeline ( staticLink, doMkDLL, runPipeline ) +import DriverState ( buildCoreToDo, buildStgToDo, + findBuildTag, + getPackageExtraGhcOpts, unregFlags, + v_GhcMode, v_GhcModeFlag, GhcMode(..), + v_Keep_tmp_files, v_Ld_inputs, v_Ways, + v_OptLevel, v_Output_file, v_Output_hi, + readPackageConf, verifyOutputFiles, v_NoLink, + v_Build_tag + ) +import DriverFlags ( buildStaticHscOpts, + dynamic_flags, processArgs, static_flags) + +import DriverMkDepend ( beginMkDependHS, endMkDependHS ) +import DriverPhases ( isSourceFile ) + +import DriverUtil ( add, handle, handleDyn, later, unknownFlagsErr ) +import CmdLineOpts ( dynFlag, restoreDynFlags, + saveDynFlags, setDynFlags, getDynFlags, dynFlag, + DynFlags(..), HscLang(..), v_Static_hsc_opts + ) +import BasicTypes ( failed ) +import Outputable import Util +import Panic ( GhcException(..), panic, installSignalHandlers ) +import DATA_IOREF ( readIORef, writeIORef ) +import EXCEPTION ( throwDyn, Exception(..), + AsyncException(StackOverflow) ) - -import Concurrent -import Directory -import IOExts -import Exception - +-- Standard Haskell libraries import IO +import Directory ( doesFileExist ) +import System ( getArgs, exitWith, ExitCode(..) ) import Monad import List -import System import Maybe - ------------------------------------------------------------------------------ --- Changes: - --- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a --- dynamic flag whereas -package is a static flag.) - ----------------------------------------------------------------------------- -- ToDo: --- -nohi doesn't work -- 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 --- -ddump-all doesn't do anything +-- -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 -Ofile ----------------------------------------------------------------------------- @@ -91,104 +93,79 @@ import Maybe main = -- top-level exception handler: any unrecognised exception is a compiler bug. - handle (\exception -> do hPutStr stderr (show (Panic (show exception))) - exitWith (ExitFailure 1) + handle (\exception -> do + hFlush stdout + case exception of + -- an IO exception probably isn't our fault, so don't panic + IOException _ -> hPutStrLn 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 :: GhcException)) - exitWith (ExitFailure 1) + 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 <- dynFlag verbosity - cleanTempFiles (verb >= 2) + cleanTempFiles verb ) $ do -- exceptions will be blocked while we clean the temporary files, -- so there shouldn't be any difficulty if we receive further -- signals. - -- install signal handlers - 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 - - 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) - - -- read the package configuration - conf_file <- readIORef v_Path_package_config - contents <- readFile conf_file - let pkg_details = read contents -- ToDo: faster - 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 - - -- 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 [] - - -- give the static flags to hsc + installSignalHandlers + + argv <- getArgs + let (minusB_args, argv') = partition (prefixMatch "-B") argv + top_dir <- initSysTools minusB_args + + -- 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 argv' [] + mode <- readIORef v_GhcMode + + -- -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) [] + + -- 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 @@ -196,131 +173,192 @@ main = -- 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 + dyn_flags <- getDynFlags + build_tag <- readIORef v_Build_tag 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 - hscOutName = panic "Main.main:hscOutName not set", - - verbosity = case mode of - DoInteractive -> 1 - DoMake -> 1 - _other -> 0, - - flags = [] } - - -- the rest of the arguments are "dynamic" - srcs <- processArgs dynamic_flags (way_non_static ++ - non_static ++ warn_opts) [] - -- save the "initial DynFlags" away - init_dyn_flags <- readIORef v_DynFlags - writeIORef v_InitDynFlags init_dyn_flags + _other | build_tag /= "" -> HscC + | otherwise -> hscLang dyn_flags + -- for ways other that the normal way, we must + -- compile via C. + + 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" + -- Leftover ones are presumably files + fileish_args <- processArgs dynamic_flags (extra_non_static ++ non_static) [] - -- complain about any unknown flags - mapM unknownFlagErr [ f | f@('-':_) <- srcs ] + -- save the "initial DynFlags" away + saveDynFlags + + let + {- + We split out the object files (.o, .dll) and add them + to v_Ld_inputs for use by the linker. + + The following things should be considered compilation manager inputs: + + - haskell source files (strings ending in .hs, .lhs or other + haskellish extension), + + - module names (not forgetting hierarchical module names), + + - and finally we consider everything not containing a '.' to be + a comp manager input, as shorthand for a .hs or .lhs filename. + + Everything else is considered to be a linker object, and passed + straight through to the linker. + -} + looks_like_an_input m = isSourceFile m + || looksLikeModuleName m + || '.' `notElem` m + + -- To simplify the handling of filepaths, we normalise all filepaths right + -- away - e.g., for win32 platforms, backslashes are converted + -- into forward slashes. + normal_fileish_paths = map normalisePath fileish_args + (srcs, objs) = partition looks_like_an_input normal_fileish_paths + + mapM_ (add v_Ld_inputs) objs + + ---------------- Display banners and configuration ----------- + showBanners mode conf_file static_opts + + ---------------- Final sanity checking ----------- + checkOptions mode srcs objs + + -- We always link in the base package in + -- one-shot linking. Any other packages + -- required must be given using -package + -- options on the command-line. + let def_hs_pkgs = [basePackage, haskell98Package] + + ---------------- Do the business ----------- + case mode of + DoMake -> doMake srcs + + DoMkDependHS -> do { beginMkDependHS ; + compileFiles mode srcs; + endMkDependHS } + StopBefore p -> do { compileFiles mode srcs; return () } + DoMkDLL -> do { o_files <- compileFiles mode srcs; + doMkDLL o_files def_hs_pkgs } + DoLink -> do { o_files <- compileFiles mode srcs; + omit_linking <- readIORef v_NoLink; + when (not omit_linking) + (staticLink o_files def_hs_pkgs) } - -- 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 - writeIORef v_InitDriverState saved_driver_state +#ifndef GHCI + DoInteractive -> throwDyn (CmdLineError "not built for interactive use") +#else + DoInteractive -> interactiveUI srcs +#endif - verb <- dynFlag verbosity +-- ----------------------------------------------------------------------------- +-- Option sanity checks + +checkOptions :: GhcMode -> [String] -> [String] -> IO () + -- Final sanity checking before kicking off a compilation (pipeline). +checkOptions mode srcs objs = do + -- Complain about any unknown flags + let unknown_opts = [ f | f@('-':_) <- srcs ] + when (notNull unknown_opts) (unknownFlagsErr unknown_opts) + + -- -ohi sanity check + 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 - 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) + -- -o sanity checking + o_file <- readIORef v_Output_file + if (srcs `lengthExceeds` 1 && isJust o_file && mode /= DoLink && mode /= DoMkDLL) + then throwDyn (UsageError "can't apply -o to multiple source files") + else do - when (verb >= 2) - (hPutStrLn stderr ("Using package config file: " ++ conf_file)) + -- Check that there are some input files (except in the interactive + -- case) + if null srcs && null objs && mode /= DoInteractive + then throwDyn (UsageError "no input files") + else do - -- initialise the finder - pkg_avails <- getPackageInfo - initFinder pkg_avails + -- Verify that output files point somewhere sensible. + verifyOutputFiles - -- mkdependHS is special - when (mode == DoMkDependHS) beginMkDependHS - -- make/interactive require invoking the compilation manager - if (mode == DoMake) then beginMake srcs else do - if (mode == DoInteractive) then beginInteractive srcs else do +-- ----------------------------------------------------------------------------- +-- Compile files in one-shot mode. - -- sanity checking - o_file <- readIORef v_Output_file - ohi <- readIORef v_Output_hi - if length srcs > 1 && (isJust ohi || (isJust o_file && mode /= DoLink)) - then throwDyn (UsageError "can't apply -o or -ohi options to multiple source files") - else do +compileFiles :: GhcMode + -> [String] -- Source files + -> IO [String] -- Object files +compileFiles mode srcs = do + stop_flag <- readIORef v_GhcModeFlag + mapM (compileFile mode stop_flag) srcs - if null srcs then throwDyn (UsageError "no input files") else do - let lang = hscLang init_dyn_flags +compileFile mode stop_flag src = do + restoreDynFlags + + exists <- doesFileExist src + when (not exists) $ + throwDyn (CmdLineError ("file `" ++ src ++ "' does not exist")) + + o_file <- readIORef v_Output_file + -- when linking, the -o argument refers to the linker's output. + -- otherwise, we use it as the name for the pipeline's output. + let maybe_o_file + | mode==DoLink || mode==DoMkDLL = Nothing + | otherwise = o_file - let compileFile src = do - writeIORef v_Driver_state saved_driver_state - writeIORef v_DynFlags init_dyn_flags + runPipeline mode stop_flag True maybe_o_file src Nothing{-no ModLocation-} - -- We compile in two stages, because the file may have an - -- OPTIONS pragma that affects the compilation pipeline (eg. -fvia-C) - -- preprocess - pp <- if mode == StopBefore Hsc then return src else do - phases <- genPipeline (StopBefore Hsc) "none" - False{-not persistent-} defaultHscLang src - runPipeline phases src False{-no linking-} False{-no -o flag-} +-- ---------------------------------------------------------------------------- +-- Run --make mode - -- compile - dyn_flags <- readIORef v_DynFlags - phases <- genPipeline mode stop_flag True (hscLang dyn_flags) pp - r <- runPipeline phases pp False{-no linking-} False{-no -o flag-} +doMake :: [String] -> IO () +doMake [] = throwDyn (UsageError "no input files") +doMake srcs = do + dflags <- getDynFlags + state <- cmInit Batch + graph <- cmDepAnal state dflags srcs + (_, ok_flag, _) <- cmLoadModules state dflags graph + when (failed ok_flag) (exitWith (ExitFailure 1)) + return () - return r +-- --------------------------------------------------------------------------- +-- Various banners and verbosity output. - o_files <- mapM compileFile srcs +showBanners :: GhcMode -> FilePath -> [String] -> IO () +showBanners mode conf_file static_opts = do + verb <- dynFlag verbosity - when (mode == DoMkDependHS) endMkDependHS - when (mode == DoLink) (doLink o_files) + -- Show the GHCi banner +# ifdef GHCI + when (mode == DoInteractive && verb >= 1) $ + hPutStrLn stdout ghciWelcomeMsg +# endif - -- 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 + -- 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) -beginMake :: [String] -> IO () -beginMake mods - = do 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") + when (verb >= 2) + (hPutStrLn stderr ("Using package config file: " ++ conf_file)) + pkg_details <- getPackageConfigMap + showPackages pkg_details -beginInteractive :: [String] -> IO () -#ifndef GHCI -beginInteractive = throwDyn (OtherError "not build for interactive use") -#else -beginInteractive mods - = do state <- cmInit Interactive - let mod = case mods of - [] -> Nothing - [mod] -> Just mod - _ -> throwDyn (UsageError - "only one module allowed with --interactive") - interactiveUI state mod -#endif + when (verb >= 3) + (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts))