X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=91d60941a63ef74350804ef9df23ca20ed958447;hb=72a42bd77936ad0edd7426a33b323e60323e9684;hp=984245fb6435a5b364cd3a454682c3373207c469;hpb=17629712b35948e3751a39747dcc9ee0cbfb72aa;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index 984245f..91d6094 100644 --- a/ghc/compiler/main/Main.hs +++ b/ghc/compiler/main/Main.hs @@ -1,15 +1,16 @@ -{-# OPTIONS -fno-warn-incomplete-patterns #-} +{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-} + ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.81 2001/07/11 19:48:07 sof Exp $ +-- $Id: Main.hs,v 1.140 2004/11/11 16:07:46 simonmar Exp $ -- -- GHC Driver program -- --- (c) Simon Marlow 2000 +-- (c) The University of Glasgow 2002 -- ----------------------------------------------------------------------------- -- with path so that ghc -M can find config.h -#include "../includes/config.h" +#include "../includes/ghcconfig.h" module Main (main) where @@ -17,74 +18,55 @@ module Main (main) where #ifdef GHCI -import InteractiveUI(ghciWelcomeMsg, interactiveUI) +import InteractiveUI( ghciWelcomeMsg, interactiveUI ) #endif -import Finder ( initFinder ) -import CompManager ( cmInit, cmLoadModule ) +import CompManager ( cmInit, cmLoadModules, cmDepAnal ) import HscTypes ( GhciMode(..) ) import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion ) -import SysTools ( packageConfigPath, initSysTools, cleanTempFiles ) -import Packages ( showPackages, mungePackagePaths ) -import ParsePkgConf ( loadPackageConfig ) - -import DriverPipeline ( GhcMode(..), doLink, doMkDLL, genPipeline, - getGhcMode, pipeLoop, v_GhcMode +import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles, + normalisePath ) +import Packages ( showPackages, getPackageConfigMap, basePackage, + haskell98Package ) -import DriverState ( buildCoreToDo, buildStgToDo, defaultHscLang, - findBuildTag, getPackageInfo, unregFlags, - v_Cmdline_libraries, v_Keep_tmp_files, v_Ld_inputs, - v_OptLevel, v_Output_file, v_Output_hi, - v_Package_details, v_Ways, getPackageExtraGhcOpts +import DriverPipeline ( staticLink, doMkDLL, runPipeline ) +import DriverState ( buildStgToDo, + findBuildTag, unregFlags, + v_GhcMode, v_GhcModeFlag, GhcMode(..), + v_Keep_tmp_files, v_Ld_inputs, v_Ways, + v_Output_file, v_Output_hi, + readPackageConf, verifyOutputFiles, v_NoLink, + v_Build_tag ) -import DriverFlags ( dynFlag, buildStaticHscOpts, dynamic_flags, - processArgs, static_flags) +import DriverFlags ( buildStaticHscOpts, + dynamic_flags, processArgs, static_flags) import DriverMkDepend ( beginMkDependHS, endMkDependHS ) -import DriverPhases ( Phase(Hsc, HCc), haskellish_src_file, objish_file ) +import DriverPhases ( isSourceFilename ) -import DriverUtil ( add, handle, handleDyn, later, splitFilename, - unknownFlagErr, getFileSuffix ) -import CmdLineOpts ( dynFlag, defaultDynFlags, restoreDynFlags, - saveDynFlags, setDynFlags, +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 ) +import Panic ( GhcException(..), panic, installSignalHandlers ) + +import DATA_IOREF ( readIORef, writeIORef ) +import EXCEPTION ( throwDyn, Exception(..), + AsyncException(StackOverflow) ) -- Standard Haskell libraries import IO import Directory ( doesFileExist ) -import IOExts ( readIORef, writeIORef ) -import Exception ( throwDyn, Exception(..) ) import System ( getArgs, exitWith, ExitCode(..) ) import Monad import List import Maybe -#ifndef mingw32_TARGET_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 - - ------------------------------------------------------------------------------ --- Changes: - --- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a --- dynamic flag whereas -package is a static flag.) - ----------------------------------------------------------------------------- -- ToDo: @@ -103,7 +85,6 @@ import Dynamic ( toDyn ) -- 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 ----------------------------------------------------------------------------- @@ -112,19 +93,24 @@ import Dynamic ( toDyn ) 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) - _other -> hPutStr stderr (show (Panic (show exception))) + 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 @@ -137,40 +123,24 @@ main = -- so there shouldn't be any difficulty if we receive further -- signals. - -- install signal handlers -#ifndef mingw32_TARGET_OS - main_thread <- myThreadId - let sig_handler = Catch (throwTo main_thread - (DynException (toDyn Interrupted))) - installHandler sigQUIT sig_handler Nothing - installHandler sigINT sig_handler Nothing -#endif + installSignalHandlers argv <- getArgs let (minusB_args, argv') = partition (prefixMatch "-B") argv top_dir <- initSysTools minusB_args -- Read the package configuration - conf_file <- packageConfigPath - proto_pkg_details <- loadPackageConfig conf_file - let pkg_details = mungePackagePaths top_dir proto_pkg_details - writeIORef v_Package_details pkg_details + conf_file <- getPackageConfigPath + readPackageConf conf_file - -- 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 [] + -- 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 (not (null orig_ways) && mode == DoInteractive) $ + when (notNull orig_ways && isInteractive mode) $ do throwDyn (UsageError "--interactive can't be used with -prof, -ticky, -unreg or -smp.") @@ -180,53 +150,193 @@ main = 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) [] + extra_non_static <- processArgs static_flags (unreg_opts ++ way_opts) [] - -- give the static flags to hsc + -- Give the static flags to hsc static_opts <- buildStaticHscOpts writeIORef v_Static_hsc_opts static_opts -- 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 -- 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 let lang = case mode of - StopBefore HCc -> HscC DoInteractive -> HscInterpreted - _other | opt_level >= 1 -> HscC -- -O implies -fvia-C - | otherwise -> defaultHscLang + DoEval _ -> HscInterpreted + _other -> hscLang dyn_flags + + setDynFlags (dyn_flags{ stgToDo = stg_todo, + hscLang = lang, + -- leave out hscOutName for now + hscOutName = panic "Main.main:hscOutName not set", + verbosity = case mode of + DoEval _ -> 0 + _other -> 1 + }) + + -- The rest of the arguments are "dynamic" + -- Leftover ones are presumably files + fileish_args <- processArgs dynamic_flags (extra_non_static ++ non_static) [] - setDynFlags (defaultDynFlags{ coreToDo = core_todo, - stgToDo = stg_todo, - hscLang = lang, - -- leave out hscOutName for now - hscOutName = panic "Main.main:hscOutName not set", + -- save the "initial DynFlags" away + saveDynFlags - verbosity = case mode of - DoInteractive -> 1 - DoMake -> 1 - _other -> 0, - }) + 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 = isSourceFilename 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 + + -- Note: have v_Ld_inputs maintain the order in which 'objs' occurred on + -- the command-line. + mapM_ (add v_Ld_inputs) (reverse 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) } - -- the rest of the arguments are "dynamic" - srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) [] +#ifndef GHCI + DoInteractive -> noInteractiveError + DoEval _ -> noInteractiveError + where + noInteractiveError = throwDyn (CmdLineError "not built for interactive use") +#else + DoInteractive -> interactiveUI srcs Nothing + DoEval expr -> interactiveUI srcs (Just expr) +#endif - -- save the "initial DynFlags" away - saveDynFlags +-- ----------------------------------------------------------------------------- +-- 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) - -- complain about any unknown flags - mapM unknownFlagErr [ f | f@('-':_) <- srcs ] + -- -ohi sanity check + ohi <- readIORef v_Output_hi + if (isJust ohi && + (mode == DoMake || isInteractive mode || srcs `lengthExceeds` 1)) + then throwDyn (UsageError "-ohi can only be used when compiling a single source file") + else do + + -- -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 + + -- Check that there are some input files (except in the interactive + -- case) + if null srcs && null objs && not (isInteractive mode) + then throwDyn (UsageError "no input files") + else do + -- Verify that output files point somewhere sensible. + verifyOutputFiles + +isInteractive DoInteractive = True +isInteractive (DoEval _) = True +isInteractive _ = False + +-- ----------------------------------------------------------------------------- +-- Compile files in one-shot mode. + +compileFiles :: GhcMode + -> [String] -- Source files + -> IO [String] -- Object files +compileFiles mode srcs = do + stop_flag <- readIORef v_GhcModeFlag + mapM (compileFile mode stop_flag) srcs + + +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 + + runPipeline mode stop_flag True maybe_o_file src Nothing{-no ModLocation-} + + +-- ---------------------------------------------------------------------------- +-- Run --make mode + +doMake :: [String] -> IO () +doMake [] = throwDyn (UsageError "no input files") +doMake srcs = do + dflags <- getDynFlags + state <- cmInit Batch dflags + graph <- cmDepAnal state srcs + (_, ok_flag, _) <- cmLoadModules state graph + when (failed ok_flag) (exitWith (ExitFailure 1)) + return () + +-- --------------------------------------------------------------------------- +-- Various banners and verbosity output. + +showBanners :: GhcMode -> FilePath -> [String] -> IO () +showBanners mode conf_file static_opts = do verb <- dynFlag verbosity -- Show the GHCi banner @@ -245,96 +355,8 @@ main = when (verb >= 2) (hPutStrLn stderr ("Using package config file: " ++ conf_file)) - when (verb >= 3) - (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts)) - + pkg_details <- getPackageConfigMap showPackages pkg_details - -- initialise the finder - pkg_avails <- getPackageInfo - initFinder pkg_avails - - -- mkdependHS is special - when (mode == DoMkDependHS) beginMkDependHS - - -- -ohi sanity checking - ohi <- readIORef v_Output_hi - if (isJust ohi && - (mode == DoMake || mode == DoInteractive || length srcs > 1)) - then throwDyn (UsageError "-ohi can only be used when compiling a single source file") - else do - - -- 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 (length srcs > 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 - - 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) - pp <- if not (haskellish_src_file src) || mode == StopBefore Hsc - then return src_and_suff else do - phases <- genPipeline (StopBefore Hsc) stop_flag - False{-not persistent-} defaultHscLang - src_and_suff - pipeLoop phases src_and_suff False{-no linking-} False{-no -o flag-} - basename suffix - - -- rest of compilation - hsc_lang <- dynFlag hscLang - phases <- genPipeline mode stop_flag True hsc_lang pp - (r,_) <- pipeLoop phases pp (mode==DoLink || mode==DoMkDLL) - True{-use -o flag-} basename suffix - return r - - o_files <- mapM compileFile srcs - - when (mode == DoMkDependHS) endMkDependHS - when (mode == DoLink) (doLink o_files) - when (mode == DoMkDLL) (doMkDLL o_files) - - - -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 - (_, ok, _) <- cmLoadModule state mods - when (not ok) (exitWith (ExitFailure 1)) - return () - - -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 Left objs ++ map Right minus_ls - - state <- cmInit Interactive - interactiveUI state mods libs -#endif + when (verb >= 3) + (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts))