X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=91d60941a63ef74350804ef9df23ca20ed958447;hb=72a42bd77936ad0edd7426a33b323e60323e9684;hp=abe7c01f32a39ca996fe75c183fc180adfe2867e;hpb=78dddbd277d766ec77d22a49867b580a0e19463b;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index abe7c01..91d6094 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 1.118 2003/01/09 10:49:21 simonmar Exp $ +-- $Id: Main.hs,v 1.140 2004/11/11 16:07:46 simonmar Exp $ -- -- GHC Driver program -- @@ -10,7 +10,7 @@ ----------------------------------------------------------------------------- -- with path so that ghc -M can find config.h -#include "../includes/config.h" +#include "../includes/ghcconfig.h" module Main (main) where @@ -18,25 +18,24 @@ module Main (main) where #ifdef GHCI -import InteractiveUI -import DriverPhases( objish_file ) +import InteractiveUI( ghciWelcomeMsg, interactiveUI ) #endif import CompManager ( cmInit, cmLoadModules, cmDepAnal ) import HscTypes ( GhciMode(..) ) import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion ) -import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles ) +import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles, + normalisePath ) import Packages ( showPackages, getPackageConfigMap, basePackage, haskell98Package ) -import DriverPipeline ( staticLink, doMkDLL, genPipeline, pipeLoop ) -import DriverState ( buildCoreToDo, buildStgToDo, - findBuildTag, - getPackageExtraGhcOpts, unregFlags, +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_OptLevel, v_Output_file, v_Output_hi, + v_Output_file, v_Output_hi, readPackageConf, verifyOutputFiles, v_NoLink, v_Build_tag ) @@ -44,42 +43,22 @@ import DriverFlags ( buildStaticHscOpts, dynamic_flags, processArgs, static_flags) import DriverMkDepend ( beginMkDependHS, endMkDependHS ) -import DriverPhases ( Phase(HsPp, Hsc), haskellish_src_file, isSourceFile ) +import DriverPhases ( isSourceFilename ) -import DriverUtil ( add, handle, handleDyn, later, splitFilename, - unknownFlagsErr, getFileSuffix ) +import DriverUtil ( add, handle, handleDyn, later, unknownFlagsErr ) import CmdLineOpts ( dynFlag, restoreDynFlags, saveDynFlags, setDynFlags, getDynFlags, dynFlag, - DynFlags(..), HscLang(..), v_Static_hsc_opts, - defaultHscLang + 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) ) -#ifndef mingw32_HOST_OS -import CONCURRENT ( myThreadId ) -# if __GLASGOW_HASKELL__ < 500 -import EXCEPTION ( raiseInThread ) -#define throwTo raiseInThread -# else -import EXCEPTION ( throwTo ) -# endif - -#if __GLASGOW_HASKELL__ > 504 -import System.Posix.Signals -#else -import Posix ( Handler(Catch), installHandler, sigINT, sigQUIT ) -#endif - -import DYNAMIC ( toDyn ) -#endif - -- Standard Haskell libraries import IO import Directory ( doesFileExist ) @@ -117,10 +96,9 @@ 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 @@ -145,14 +123,7 @@ main = -- so there shouldn't be any difficulty if we receive further -- signals. - -- install signal handlers -#ifndef mingw32_HOST_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 @@ -162,19 +133,14 @@ main = conf_file <- getPackageConfigPath readPackageConf conf_file - -- process all the other arguments, and get the source files + -- Process all the other arguments, and get the source files 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) $ + when (notNull orig_ways && isInteractive mode) $ do throwDyn (UsageError "--interactive can't be used with -prof, -ticky, -unreg or -smp.") @@ -184,157 +150,47 @@ 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. dyn_flags <- getDynFlags - build_tag <- readIORef v_Build_tag 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. + DoEval _ -> HscInterpreted + _other -> hscLang dyn_flags - setDynFlags (dyn_flags{ coreToDo = core_todo, - stgToDo = stg_todo, + setDynFlags (dyn_flags{ stgToDo = stg_todo, hscLang = lang, -- leave out hscOutName for now hscOutName = panic "Main.main:hscOutName not set", - verbosity = 1 + verbosity = case mode of + DoEval _ -> 0 + _other -> 1 }) - -- the rest of the arguments are "dynamic" - srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) [] + -- The rest of the arguments are "dynamic" + -- Leftover ones are presumably files + fileish_args <- processArgs dynamic_flags (extra_non_static ++ non_static) [] -- save the "initial DynFlags" away saveDynFlags - -- perform some checks of the options set / report unknowns. - checkOptions srcs - - verb <- dynFlag verbosity - - -- Show the GHCi banner -# ifdef GHCI - when (mode == DoInteractive && 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)) - - -- mkdependHS is special - when (mode == DoMkDependHS) beginMkDependHS - - -- -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 - - -- 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 - let real_srcs = filter isSourceFile srcs -- filters out .a and .o that might appear - o_file <- readIORef v_Output_file - if (real_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 - - 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 - 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 - - omit_linking <- readIORef v_NoLink - when (mode == DoLink && 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. - - when (mode == DoMkDLL) (doMkDLL o_files) - - - -beginMake :: [String] -> IO () -beginMake fileish_args = do - -- anything that doesn't look like a Haskell source filename or - -- a module name is passed straight through to the linker - let (inputs, objects) = partition looks_like_an_input fileish_args - mapM_ (add v_Ld_inputs) objects - - case inputs of - [] -> throwDyn (UsageError "no input files") - _ -> do dflags <- getDynFlags - state <- cmInit Batch - graph <- cmDepAnal state dflags inputs - (_, ok_flag, _) <- cmLoadModules state dflags graph - when (failed ok_flag) (exitWith (ExitFailure 1)) - return () - where + 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 @@ -348,30 +204,159 @@ beginMake fileish_args = do Everything else is considered to be a linker object, and passed straight through to the linker. -} - looks_like_an_input m = haskellish_src_file m + 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) } -beginInteractive :: [String] -> IO () #ifndef GHCI -beginInteractive = throwDyn (CmdLineError "not built for interactive use") + DoInteractive -> noInteractiveError + DoEval _ -> noInteractiveError + where + noInteractiveError = throwDyn (CmdLineError "not built for interactive use") #else -beginInteractive fileish_args - = do state <- cmInit Interactive - - let (objs, mods) = partition objish_file fileish_args - - interactiveUI state mods objs + DoInteractive -> interactiveUI srcs Nothing + DoEval expr -> interactiveUI srcs (Just expr) #endif -checkOptions :: [String] -> IO () -checkOptions srcs = do - -- complain about any unknown flags +-- ----------------------------------------------------------------------------- +-- 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) - -- verify that output files point somewhere sensible. + + -- -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 - -- and anything else that it might be worth checking for - -- before kicking of a compilation (pipeline). +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 +# ifdef GHCI + when (mode == DoInteractive && 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))