X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=457e9463b1af7cd9ba934ad756e148c6b52f6f78;hb=395917a05328e935f40abd080b169aa25546b083;hp=1b9f220e047a89aedbf9c76425a98782ee3e7163;hpb=b23b59f1918884c16cd8f1357f999f48521294b3;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index 1b9f220..457e946 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 1.68 2001/06/13 10:23:23 simonmar Exp $ +-- $Id: Main.hs,v 1.119 2003/02/17 12:24:27 simonmar Exp $ -- -- GHC Driver program -- --- (c) Simon Marlow 2000 +-- (c) The University of Glasgow 2002 -- ----------------------------------------------------------------------------- @@ -18,48 +19,57 @@ module Main (main) where #ifdef GHCI import InteractiveUI +import DriverPhases( objish_file ) #endif -#ifndef mingw32_TARGET_OS -import Dynamic -import Posix -#endif -import CompManager -import ParsePkgConf -import DriverPipeline -import DriverState -import DriverFlags -import DriverMkDepend -import DriverUtil -import Panic -import DriverPhases ( Phase(..), haskellish_src_file, objish_file ) -import CmdLineOpts -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 ) +import Packages ( showPackages, getPackageConfigMap, basePackage, + haskell98Package + ) +import DriverPipeline ( staticLink, doMkDLL, genPipeline, pipeLoop ) +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 ( Phase(HsPp, Hsc), haskellish_src_file, isSourceFile ) + +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 BasicTypes ( failed ) import Outputable import Util +import Panic ( GhcException(..), panic, installSignalHandlers ) -import Concurrent -import Directory -import IOExts -import Exception +import DATA_IOREF ( readIORef, writeIORef ) +import EXCEPTION ( throwDyn, Exception(..), + AsyncException(StackOverflow) ) +-- 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: @@ -78,7 +88,6 @@ import Maybe -- 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 ----------------------------------------------------------------------------- @@ -86,16 +95,26 @@ 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 _ -> 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 :: 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 @@ -108,79 +127,20 @@ main = -- 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 (InstallationError - ("Can't find package.conf in " ++ - inplace_pkgconfig)) - - -- 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") -#if defined(mingw32_TARGET_OS) && defined(MINIMAL_UNIX_DEPS) - writeIORef v_Pgm_T (installed cTOUCH) -#endif - - 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) -#if defined(mingw32_TARGET_OS) && defined(MINIMAL_UNIX_DEPS) - writeIORef v_Pgm_T (inplace cTOUCH) -#endif - - -- read the package configuration - conf_file <- readIORef v_Path_package_config - r <- parsePkgConf conf_file - case r of { - Left err -> throwDyn (InstallationError (showSDoc err)); - Right pkg_details -> do + installSignalHandlers - writeIORef v_Package_details (mungePackagePaths top_dir pkg_details) + argv <- getArgs + let (minusB_args, argv') = partition (prefixMatch "-B") argv + top_dir <- initSysTools minusB_args - -- find the phase to stop after (i.e. -E, -C, -c, -S flags) - (flags2, mode, stop_flag) <- getGhcMode argv' - writeIORef v_GhcMode mode - - -- Show the GHCi banner? -# ifdef GHCI - when (mode == DoInteractive) $ - hPutStrLn stdout ghciWelcomeMsg -# endif + -- 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 @@ -189,7 +149,7 @@ main = 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 && mode == DoInteractive) $ do throwDyn (UsageError "--interactive can't be used with -prof, -ticky, -unreg or -smp.") @@ -199,7 +159,9 @@ main = way_opts <- findBuildTag let unreg_opts | cGhcUnregisterised == "YES" = unregFlags | otherwise = [] - way_non_static <- processArgs static_flags (unreg_opts ++ way_opts) [] + 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 @@ -214,39 +176,41 @@ 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 - defaultDynFlags{ 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, - } + _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" - srcs <- processArgs dynamic_flags (way_non_static ++ non_static) [] - -- save the "initial DynFlags" away - init_dyn_flags <- readIORef v_DynFlags - writeIORef v_InitDynFlags init_dyn_flags + srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) [] - -- complain about any unknown flags - mapM unknownFlagErr [ f | f@('-':_) <- srcs ] + -- 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 @@ -256,20 +220,19 @@ main = 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)) - -- 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)) + (mode == DoMake || mode == DoInteractive || srcs `lengthExceeds` 1)) then throwDyn (UsageError "-ohi can only be used when compiling a single source file") else do @@ -278,15 +241,16 @@ main = 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 (length srcs > 1 && isJust o_file && mode /= DoLink && mode /= DoMkDLL) + 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 - writeIORef v_DynFlags init_dyn_flags + restoreDynFlags exists <- doesFileExist src when (not exists) $ @@ -297,66 +261,71 @@ main = let (basename, suffix) = splitFilename src -- just preprocess (Haskell source only) - pp <- if not (haskellish_src_file src) || mode == StopBefore Hsc - then return src else do + 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 - pipeLoop phases src False{-no linking-} False{-no -o 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 - dyn_flags <- readIORef v_DynFlags - phases <- genPipeline mode stop_flag True (hscLang dyn_flags) pp - r <- pipeLoop phases pp (mode==DoLink || mode==DoMkDLL) True{-use -o flag-} - basename suffix + 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) - } - - --- 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 - [] -> throwDyn (InstallationError ("missing -B option")) - some -> writeIORef v_TopDir (drop 2 (last some))) - return others + 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. --- replace the string "$libdir" at the beginning of a path with the --- current TOPDIR (obtained from the -B option if present, or the --- wired-in libdir otherwise). -mungePackagePaths top_dir ps = map munge_pkg ps - where - munge_pkg p = p{ import_dirs = munge_paths (import_dirs p), - include_dirs = munge_paths (include_dirs p), - library_dirs = munge_paths (library_dirs p) } - - munge_paths = map munge_path + when (mode == DoMkDLL) (doMkDLL o_files) - munge_path p - | Just p' <- my_prefix_match "$libdir" p = top_dir ++ p' - | otherwise = trace ("not: " ++ p) p 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 - cmLoadModule state mod - return () - _ -> throwDyn (UsageError "only one module allowed with --make") +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 + {- + 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 = haskellish_src_file m + || looksLikeModuleName m + || '.' `notElem` m beginInteractive :: [String] -> IO () @@ -364,15 +333,20 @@ beginInteractive :: [String] -> IO () beginInteractive = throwDyn (CmdLineError "not built for interactive use") #else beginInteractive fileish_args - = do minus_ls <- readIORef v_Cmdline_libraries + = do state <- cmInit Interactive let (objs, mods) = partition objish_file fileish_args - libs = map Left objs ++ map Right minus_ls - - state <- cmInit Interactive - case mods of - [] -> interactiveUI state Nothing libs - [mod] -> interactiveUI state (Just mod) libs - _ -> throwDyn (UsageError - "only one module allowed with --interactive") + + interactiveUI state mods objs #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). +