X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=bb128f26e4c447bcaa4f8f43177e78ec5ab663ae;hb=839d23a4ddbb27409eebc8c1f33a04ab4a0f1654;hp=f6175e7b7585ed38cedcb4f2d5f3de76692dc8dd;hpb=9413f9edf73ee244ecd291c8faed5d94d934c1a4;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index f6175e7..bb128f2 100644 --- a/ghc/compiler/main/Main.hs +++ b/ghc/compiler/main/Main.hs @@ -1,7 +1,7 @@ {-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-} ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.125 2003/06/10 17:54:56 sof Exp $ +-- $Id: Main.hs,v 1.148 2005/02/10 15:26:23 simonmar Exp $ -- -- GHC Driver program -- @@ -9,48 +9,38 @@ -- ----------------------------------------------------------------------------- --- with path so that ghc -M can find config.h -#include "../includes/config.h" - module Main (main) where #include "HsVersions.h" - #ifdef GHCI -import InteractiveUI( ghciWelcomeMsg, interactiveUI ) +import InteractiveUI ( ghciWelcomeMsg, interactiveUI ) #endif +import DriverState ( isInteractiveMode ) 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(..), +import SysTools ( initSysTools, cleanTempFiles, normalisePath ) +import Packages ( dumpPackages, initPackages, haskell98PackageId, PackageIdH(..) ) +import DriverPipeline ( staticLink, doMkDLL, compileFile ) +import DriverState ( isLinkMode, + isCompManagerMode, isInterpretiveMode, + buildStgToDo, findBuildTag, unregFlags, + v_GhcMode, 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 + v_Output_file, v_Output_hi, v_GhcLink, + verifyOutputFiles, GhcLink(..) ) -import DriverFlags ( buildStaticHscOpts, - dynamic_flags, processArgs, static_flags) +import DriverFlags -import DriverMkDepend ( beginMkDependHS, endMkDependHS ) -import DriverPhases ( isSourceFile ) +import DriverMkDepend ( doMkDependHS ) +import DriverPhases ( Phase, isStopLn, isSourceFilename ) import DriverUtil ( add, handle, handleDyn, later, unknownFlagsErr ) -import CmdLineOpts ( dynFlag, restoreDynFlags, - saveDynFlags, setDynFlags, getDynFlags, dynFlag, - DynFlags(..), HscLang(..), v_Static_hsc_opts - ) +import CmdLineOpts ( DynFlags(..), HscTarget(..), v_Static_hsc_opts, + defaultDynFlags ) import BasicTypes ( failed ) import Outputable import Util @@ -62,7 +52,6 @@ import EXCEPTION ( throwDyn, Exception(..), -- Standard Haskell libraries import IO -import Directory ( doesFileExist ) import System ( getArgs, exitWith, ExitCode(..) ) import Monad import List @@ -97,10 +86,9 @@ main = hFlush stdout case exception of -- an IO exception probably isn't our fault, so don't panic - IOException _ -> hPutStr stderr (show exception) + IOException _ -> hPutStrLn stderr (show exception) AsyncException StackOverflow -> - hPutStrLn stderr "stack overflow: use +RTS -K \ - \to increase it" + hPutStrLn stderr "stack overflow: use +RTS -K to increase it" _other -> hPutStr stderr (show (Panic (show exception))) exitWith (ExitFailure 1) ) $ do @@ -115,38 +103,20 @@ main = 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 - ) $ do - -- exceptions will be blocked while we clean the temporary files, - -- so there shouldn't be any difficulty if we receive further - -- signals. - 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' [] + non_static <- processStaticFlags 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) $ + when (notNull orig_ways && isInterpretiveMode mode) $ do throwDyn (UsageError "--interactive can't be used with -prof, -ticky, -unreg or -smp.") @@ -156,46 +126,55 @@ 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 <- processStaticFlags (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 + -- set the "global" HscTarget. The HscTarget 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 - build_tag <- readIORef v_Build_tag + -- HscTarget is not HscC or HscAsm, -fvia-C and -fasm have no effect. + let dflags0 = defaultDynFlags let lang = case mode of DoInteractive -> HscInterpreted - _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 - }) + DoEval _ -> HscInterpreted + _other -> hscTarget dflags0 + + let dflags1 = dflags0{ stgToDo = stg_todo, + hscTarget = 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) [] + (dflags2, fileish_args) <- processDynamicFlags + (extra_non_static ++ non_static) dflags1 + + -- make sure we clean up after ourselves + later (do forget_it <- readIORef v_Keep_tmp_files + unless forget_it $ do + cleanTempFiles dflags2 + ) $ do + -- exceptions will be blocked while we clean the temporary files, + -- so there shouldn't be any difficulty if we receive further + -- signals. - -- save the "initial DynFlags" away - saveDynFlags + -- Display banner + showBanner mode dflags2 + + -- Read the package config(s), and process the package-related + -- command-line flags + dflags <- initPackages dflags2 let {- @@ -215,49 +194,45 @@ main = Everything else is considered to be a linker object, and passed straight through to the linker. -} - looks_like_an_input m = isSourceFile m + looks_like_an_input m = isSourceFilename m || looksLikeModuleName m || '.' `notElem` m - (raw_srcs, objs) = partition looks_like_an_input fileish_args - - -- To simplify the handling of filepaths, we normalise all source file - -- paths right away - e.g., for win32 platforms, backslashes are converted + -- To simplify the handling of filepaths, we normalise all filepaths right + -- away - e.g., for win32 platforms, backslashes are converted -- into forward slashes. - srcs = map normalisePath raw_srcs + 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) - mapM_ (add v_Ld_inputs) objs + ---------------- Display configuration ----------- + when (verbosity dflags >= 4) $ + dumpPackages dflags - ---------------- Display banners and configuration ----------- - showBanners mode conf_file static_opts + when (verbosity dflags >= 3) $ + hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts) ---------------- Final sanity checking ----------- checkOptions mode srcs objs ---------------- 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 } - DoLink -> do { o_files <- compileFiles mode srcs; - omit_linking <- readIORef v_NoLink; - when (not omit_linking) - (staticLink o_files - [basePackage, haskell98Package]) } - -- 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. + case mode of + DoMake -> doMake dflags srcs + DoMkDependHS -> doMkDependHS dflags srcs + StopBefore p -> do { o_files <- compileFiles mode dflags srcs + ; doLink dflags p o_files } #ifndef GHCI - DoInteractive -> throwDyn (CmdLineError "not built for interactive use") + DoInteractive -> noInteractiveError + DoEval _ -> noInteractiveError + where + noInteractiveError = throwDyn (CmdLineError "not built for interactive use") #else - DoInteractive -> interactiveUI srcs + DoInteractive -> interactiveUI dflags srcs Nothing + DoEval expr -> interactiveUI dflags srcs (Just expr) #endif -- ----------------------------------------------------------------------------- @@ -266,99 +241,89 @@ main = 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)) + (isCompManagerMode 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) + if (srcs `lengthExceeds` 1 && isJust o_file && not (isLinkMode mode)) 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 && mode /= DoInteractive + -- Check that there are some input files + -- (except in the interactive case) + if null srcs && null objs && not (isInterpretiveMode mode) then throwDyn (UsageError "no input files") else 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 - -- ----------------------------------------------------------------------------- -- Compile files in one-shot mode. -compileFiles :: GhcMode +compileFiles :: GhcMode + -> DynFlags -> [String] -- Source files -> IO [String] -- Object files -compileFiles mode srcs = do - stop_flag <- readIORef v_GhcModeFlag - mapM (compileFile mode stop_flag) srcs +compileFiles mode dflags srcs = mapM (compileFile mode dflags) 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 +doLink :: DynFlags -> Phase -> [FilePath] -> IO () +doLink dflags stop_phase o_files + | not (isStopLn stop_phase) + = return () -- We stopped before the linking phase - runPipeline mode stop_flag True maybe_o_file src + | otherwise + = do { ghc_link <- readIORef v_GhcLink + ; case ghc_link of + NoLink -> return () + StaticLink -> staticLink dflags o_files link_pkgs + MkDLL -> doMkDLL dflags o_files link_pkgs + } + where + -- Always link in the haskell98 package for static linking. Other + -- packages have to be specified via the -package flag. + link_pkgs + | ExtPackage h98_id <- haskell98PackageId (pkgState dflags) = [h98_id] + | otherwise = [] -- ---------------------------------------------------------------------------- -- Run --make mode -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 +doMake :: DynFlags -> [String] -> IO () +doMake dflags [] = throwDyn (UsageError "no input files") +doMake dflags srcs = do + 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 - +showBanner :: GhcMode -> DynFlags -> IO () +showBanner mode dflags = do + let verb = verbosity dflags -- Show the GHCi banner # ifdef GHCI - when (mode == DoInteractive && verb >= 1) $ + when (isInteractiveMode mode && verb >= 1) $ hPutStrLn stdout ghciWelcomeMsg # endif -- 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 >= 2) - (hPutStrLn stderr ("Using package config file: " ++ conf_file)) - - pkg_details <- getPackageConfigMap - showPackages pkg_details - - when (verb >= 3) - (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts)) + when (not (isInteractiveMode mode) && verb >= 2) $ + do hPutStr stderr "Glasgow Haskell Compiler, Version " + hPutStr stderr cProjectVersion + hPutStr stderr ", for Haskell 98, compiled by GHC version " + hPutStrLn stderr cBooterVersion