X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=7a2ae0c67f85d253e69a4531dd0d922b345c7f39;hb=423d477bfecd490de1449c59325c8776f91d7aac;hp=ac92fd6e5725a06b2248e51f75bb33fb11da05a8;hpb=a77e522a45f95126d89716b447232bedc9fbfb28;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index ac92fd6..7a2ae0c 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 1.121 2003/05/21 02:48:56 igloo Exp $ +-- $Id: Main.hs,v 1.138 2004/08/13 13:07:05 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 @@ -25,17 +25,18 @@ import InteractiveUI( ghciWelcomeMsg, interactiveUI ) 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, +import DriverPipeline ( staticLink, doMkDLL, runPipeline ) +import DriverState ( 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, + v_Output_file, v_Output_hi, readPackageConf, verifyOutputFiles, v_NoLink, v_Build_tag ) @@ -43,14 +44,12 @@ import DriverFlags ( buildStaticHscOpts, dynamic_flags, processArgs, static_flags) import DriverMkDepend ( beginMkDependHS, endMkDependHS ) -import DriverPhases ( Phase(HsPp, Hsc), haskellish_src_file, objish_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 @@ -98,10 +97,9 @@ 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 @@ -142,12 +140,8 @@ main = -- -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.") @@ -161,44 +155,71 @@ main = extra_non_static <- processArgs static_flags (unreg_opts ++ way_opts ++ pkg_extra_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" -- Leftover ones are presumably files fileish_args <- processArgs dynamic_flags (extra_non_static ++ non_static) [] - -- We split out the object files (.o, .dll) and add them - -- to v_Ld_inputs for use by the linker - let (objs, srcs) = partition objish_file fileish_args - mapM_ (add v_Ld_inputs) objs + -- 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 = 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 @@ -206,37 +227,51 @@ main = ---------------- 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 -> do { saveDynFlags ; - doMake srcs } + 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 } + 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 [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. + (staticLink o_files def_hs_pkgs) } + #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 srcs Nothing + DoEval expr -> interactiveUI srcs (Just expr) #endif --------------------------------------------------------------------------------------- +-- ----------------------------------------------------------------------------- +-- Option sanity checks + checkOptions :: GhcMode -> [String] -> [String] -> IO () - -- Final sanity checking before kicking of a compilation (pipeline). + -- 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)) + (mode == DoMake || isInteractive mode || srcs `lengthExceeds` 1)) then throwDyn (UsageError "-ohi can only be used when compiling a single source file") else do @@ -246,29 +281,27 @@ checkOptions mode srcs objs = do 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 (isInteractive 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 +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 - - -- Do the business; save the DynFlags at the - -- start, so we can restore them before each file - saveDynFlags mapM (compileFile mode stop_flag) srcs @@ -279,43 +312,32 @@ compileFile mode stop_flag src = do 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_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 - graph <- cmDepAnal state dflags srcs - (_, ok_flag, _) <- cmLoadModules state dflags graph + 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