{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-}
-
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.116 2002/12/18 16:29:30 simonmar Exp $
--
-- GHC Driver program
--
--- (c) The University of Glasgow 2002
+-- (c) The University of Glasgow 2005
--
-----------------------------------------------------------------------------
--- with path so that ghc -M can find config.h
-#include "../includes/config.h"
-
module Main (main) where
#include "HsVersions.h"
-
+-- The official GHC API
+import qualified GHC
+import GHC ( Session, DynFlags(..), GhcMode(..), HscTarget(..),
+ LoadHowMuch(..), dopt, DynFlag(..) )
+import CmdLineParser
+
+-- Implementations of the various modes (--show-iface, mkdependHS. etc.)
+import MkIface ( showIface )
+import DriverPipeline ( oneShot, compileFile )
+import DriverMkDepend ( doMkDependHS )
+import SysTools ( getTopDir, getUsageMsgPaths )
#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 Packages ( showPackages, getPackageConfigMap )
-
-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
- )
+-- Various other random stuff that we need
+import Config ( cProjectVersion, cBooterVersion, cProjectName )
+import Packages ( dumpPackages, initPackages )
+import DriverPhases ( Phase(..), isSourceFilename, anyHsc,
+ startPhase, isHaskellSrcFilename )
+import StaticFlags ( staticFlags, v_Ld_inputs, parseStaticFlags )
+import DynFlags ( defaultDynFlags )
import BasicTypes ( failed )
+import ErrUtils ( Message, debugTraceMsg, putMsg )
+import FastString ( getFastStringTable, isZEncoded, hasZEncoding )
import Outputable
import Util
-import Panic ( GhcException(..), panic )
-
-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
+import Panic
-- Standard Haskell libraries
+import EXCEPTION ( throwDyn )
import IO
-import Directory ( doesFileExist )
+import Directory ( doesDirectoryExist )
import System ( getArgs, exitWith, ExitCode(..) )
import Monad
import List
-----------------------------------------------------------------------------
-- ToDo:
--- new mkdependHS doesn't support all the options that the old one did (-X et al.)
-- time commands when run with -v
--- split marker
--- java generation
-- user ways
-- Win32 support: proper signal handling
--- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too
-- reading the package configuration file is too slow
-- -K<size>
-----------------------------------------------------------------------------
--- Differences vs. old driver:
-
--- No more "Enter your Haskell program, end with ^D (on a line of its own):"
--- consistency checking removed (may do this properly later)
--- no -Ofile
-
------------------------------------------------------------------------------
--- Main loop
+-- GHC's command-line interface
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)
- AsyncException StackOverflow ->
- hPutStrLn stderr "stack overflow: use +RTS -K<size> \
- \to increase it"
- _other -> hPutStr stderr (show (Panic (show exception)))
- exitWith (ExitFailure 1)
- ) $ do
-
- -- all error messages are propagated as exceptions
- 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
- 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.
-
- -- 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
-
- 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' []
- 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) $
- do throwDyn (UsageError
- "--interactive can't be used with -prof, -ticky, -unreg or -smp.")
+ GHC.defaultErrorHandler defaultDynFlags $ do
+
+ argv0 <- getArgs
+ argv1 <- parseStaticFlags =<< GHC.initFromArgs argv0
- -- Find the build tag, and re-process the build-specific options.
- -- Also add in flags for unregisterised compilation, if
- -- GhcUnregisterised=YES.
- 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) []
-
- -- 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.
-
- 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 (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
+ -- 2. Parse the "mode" flags (--make, --interactive etc.)
+ (cli_mode, argv2) <- parseModeFlags argv1
- -- Show the GHCi banner
-# ifdef GHCI
- when (mode == DoInteractive && verb >= 1) $
- hPutStrLn stdout ghciWelcomeMsg
-# endif
+ let mode = case cli_mode of
+ DoInteractive -> Interactive
+ DoEval _ -> Interactive
+ DoMake -> BatchCompile
+ DoMkDependHS -> MkDepend
+ _ -> OneShot
- -- 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)
+ -- start our GHC session
+ session <- GHC.newSession mode
- when (verb >= 2)
- (hPutStrLn stderr ("Using package config file: " ++ conf_file))
+ dflags0 <- GHC.getSessionDynFlags session
- pkg_details <- getPackageConfigMap
- showPackages pkg_details
+ -- set the default HscTarget. The HscTarget can be further
+ -- adjusted on a module by module basis, using only the -fvia-C and
+ -- -fasm flags. If the default HscTarget is not HscC or HscAsm,
+ -- -fvia-C and -fasm have no effect.
+ let lang = case cli_mode of
+ DoInteractive -> HscInterpreted
+ DoEval _ -> HscInterpreted
+ _other -> hscTarget dflags0
+
+ let dflags1 = dflags0{ ghcMode = mode,
+ hscTarget = lang,
+ -- leave out hscOutName for now
+ hscOutName = panic "Main.main:hscOutName not set",
+ verbosity = case cli_mode of
+ DoEval _ -> 0
+ _other -> 1
+ }
+
+ -- The rest of the arguments are "dynamic"
+ -- Leftover ones are presumably files
+ (dflags2, fileish_args) <- GHC.parseDynamicFlags dflags1 argv2
+
+ -- make sure we clean up after ourselves
+ GHC.defaultCleanupHandler dflags2 $ do
+
+ -- Display banner
+ showBanner cli_mode dflags2
+
+ -- Read the package config(s), and process the package-related
+ -- command-line flags
+ dflags <- initPackages dflags2
+
+ -- we've finished manipulating the DynFlags, update the session
+ GHC.setSessionDynFlags session dflags
+
+ let
+ -- 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_args normal_fileish_paths [] []
+
+ -- Note: have v_Ld_inputs maintain the order in which 'objs' occurred on
+ -- the command-line.
+ mapM_ (consIORef v_Ld_inputs) (reverse objs)
+
+ ---------------- Display configuration -----------
+ when (verbosity dflags >= 4) $
+ dumpPackages dflags
+
+ when (verbosity dflags >= 3) $ do
+ hPutStrLn stderr ("Hsc static flags: " ++ unwords staticFlags)
+
+ ---------------- Final sanity checking -----------
+ checkOptions cli_mode dflags srcs objs
+
+ ---------------- Do the business -----------
+ case cli_mode of
+ ShowUsage -> showGhcUsage cli_mode
+ PrintLibdir -> do d <- getTopDir; putStrLn d
+ ShowVersion -> showVersion
+ ShowNumVersion -> putStrLn cProjectVersion
+ ShowInterface f -> showIface f
+ DoMake -> doMake session srcs
+ DoMkDependHS -> doMkDependHS session (map fst srcs)
+ StopBefore p -> oneShot dflags p srcs
+ DoInteractive -> interactiveUI session srcs Nothing
+ DoEval expr -> interactiveUI session srcs (Just expr)
+
+ dumpFinalStats dflags
+ exitWith ExitSuccess
- when (verb >= 3)
- (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts))
+#ifndef GHCI
+interactiveUI _ _ _ =
+ throwDyn (CmdLineError "not built for interactive use")
+#endif
- -- mkdependHS is special
- when (mode == DoMkDependHS) beginMkDependHS
+-- -----------------------------------------------------------------------------
+-- Splitting arguments into source files and object files. This is where we
+-- interpret the -x <suffix> option, and attach a (Maybe Phase) to each source
+-- file indicating the phase specified by the -x option in force, if any.
+
+partition_args [] srcs objs = (reverse srcs, reverse objs)
+partition_args ("-x":suff:args) srcs objs
+ | "none" <- suff = partition_args args srcs objs
+ | StopLn <- phase = partition_args args srcs (slurp ++ objs)
+ | otherwise = partition_args rest (these_srcs ++ srcs) objs
+ where phase = startPhase suff
+ (slurp,rest) = break (== "-x") args
+ these_srcs = zip slurp (repeat (Just phase))
+partition_args (arg:args) srcs objs
+ | looks_like_an_input arg = partition_args args ((arg,Nothing):srcs) objs
+ | otherwise = partition_args args srcs (arg:objs)
+
+ {-
+ 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
+
+-- -----------------------------------------------------------------------------
+-- Option sanity checks
+
+checkOptions :: CmdLineMode -> DynFlags -> [(String,Maybe Phase)] -> [String] -> IO ()
+ -- Final sanity checking before kicking off a compilation (pipeline).
+checkOptions cli_mode dflags srcs objs = do
+ -- Complain about any unknown flags
+ let unknown_opts = [ f | (f@('-':_), _) <- srcs ]
+ when (notNull unknown_opts) (unknownFlagsErr unknown_opts)
- -- -ohi sanity checking
- ohi <- readIORef v_Output_hi
- if (isJust ohi &&
- (mode == DoMake || mode == DoInteractive || srcs `lengthExceeds` 1))
+ -- -prof and --interactive are not a good combination
+ when (notNull (wayNames dflags) && isInterpretiveMode cli_mode) $
+ do throwDyn (UsageError
+ "--interactive can't be used with -prof, -ticky, -unreg or -smp.")
+ -- -ohi sanity check
+ if (isJust (outputHi dflags) &&
+ (isCompManagerMode cli_mode || 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)
+ if (srcs `lengthExceeds` 1 && isJust (outputFile dflags)
+ && not (isLinkMode cli_mode))
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.
+ -- Check that there are some input files
+ -- (except in the interactive case)
+ if null srcs && null objs && needsInputsMode cli_mode
+ then throwDyn (UsageError "no input files")
+ else do
- when (mode == DoMkDLL) (doMkDLL o_files)
+ -- Verify that output files point somewhere sensible.
+ verifyOutputFiles dflags
+-- Compiler output options
-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
- looks_like_an_input m = haskellish_src_file m || '.' `notElem` m
+-- called to verify that the output files & directories
+-- point somewhere valid.
+--
+-- The assumption is that the directory portion of these output
+-- options will have to exist by the time 'verifyOutputFiles'
+-- is invoked.
+--
+verifyOutputFiles :: DynFlags -> IO ()
+verifyOutputFiles dflags = do
+ let odir = objectDir dflags
+ when (isJust odir) $ do
+ let dir = fromJust odir
+ flg <- doesDirectoryExist dir
+ when (not flg) (nonExistentDir "-odir" dir)
+ let ofile = outputFile dflags
+ when (isJust ofile) $ do
+ let fn = fromJust ofile
+ flg <- doesDirNameExist fn
+ when (not flg) (nonExistentDir "-o" fn)
+ let ohi = outputHi dflags
+ when (isJust ohi) $ do
+ let hi = fromJust ohi
+ flg <- doesDirNameExist hi
+ when (not flg) (nonExistentDir "-ohi" hi)
+ where
+ nonExistentDir flg dir =
+ throwDyn (CmdLineError ("error: directory portion of " ++
+ show dir ++ " does not exist (used with " ++
+ show flg ++ " option.)"))
+-----------------------------------------------------------------------------
+-- GHC modes of operation
+
+data CmdLineMode
+ = ShowUsage -- ghc -?
+ | PrintLibdir -- ghc --print-libdir
+ | ShowVersion -- ghc -V/--version
+ | ShowNumVersion -- ghc --numeric-version
+ | ShowInterface String -- ghc --show-iface
+ | DoMkDependHS -- ghc -M
+ | StopBefore Phase -- ghc -E | -C | -S
+ -- StopBefore StopLn is the default
+ | DoMake -- ghc --make
+ | DoInteractive -- ghc --interactive
+ | DoEval String -- ghc -e
+ deriving (Show)
+
+isInteractiveMode, isInterpretiveMode :: CmdLineMode -> Bool
+isLinkMode, isCompManagerMode :: CmdLineMode -> Bool
+
+isInteractiveMode DoInteractive = True
+isInteractiveMode _ = False
+
+-- isInterpretiveMode: byte-code compiler involved
+isInterpretiveMode DoInteractive = True
+isInterpretiveMode (DoEval _) = True
+isInterpretiveMode _ = False
+
+needsInputsMode DoMkDependHS = True
+needsInputsMode (StopBefore _) = True
+needsInputsMode DoMake = True
+needsInputsMode _ = False
+
+-- True if we are going to attempt to link in this mode.
+-- (we might not actually link, depending on the GhcLink flag)
+isLinkMode (StopBefore StopLn) = True
+isLinkMode DoMake = True
+isLinkMode _ = False
+
+isCompManagerMode DoMake = True
+isCompManagerMode DoInteractive = True
+isCompManagerMode (DoEval _) = True
+isCompManagerMode _ = False
+
+
+-- -----------------------------------------------------------------------------
+-- Parsing the mode flag
+
+parseModeFlags :: [String] -> IO (CmdLineMode, [String])
+parseModeFlags args = do
+ let ((leftover, errs), (mode, _, flags)) =
+ runCmdLine (processArgs mode_flags args) (StopBefore StopLn, "", [])
+ when (not (null errs)) $ do
+ throwDyn (UsageError (unlines errs))
+ return (mode, flags ++ leftover)
+
+type ModeM a = CmdLineP (CmdLineMode, String, [String]) a
+ -- mode flags sometimes give rise to new DynFlags (eg. -C, see below)
+ -- so we collect the new ones and return them.
+
+mode_flags :: [(String, OptKind (CmdLineP (CmdLineMode, String, [String])))]
+mode_flags =
+ [ ------- help / version ----------------------------------------------
+ ( "?" , PassFlag (setMode ShowUsage))
+ , ( "-help" , PassFlag (setMode ShowUsage))
+ , ( "-print-libdir" , PassFlag (setMode PrintLibdir))
+ , ( "V" , PassFlag (setMode ShowVersion))
+ , ( "-version" , PassFlag (setMode ShowVersion))
+ , ( "-numeric-version", PassFlag (setMode ShowNumVersion))
+
+ ------- interfaces ----------------------------------------------------
+ , ( "-show-iface" , HasArg (\f -> setMode (ShowInterface f)
+ "--show-iface"))
+
+ ------- primary modes ------------------------------------------------
+ , ( "M" , PassFlag (setMode DoMkDependHS))
+ , ( "E" , PassFlag (setMode (StopBefore anyHsc)))
+ , ( "C" , PassFlag (\f -> do setMode (StopBefore HCc) f
+ addFlag "-fvia-C"))
+ , ( "S" , PassFlag (setMode (StopBefore As)))
+ , ( "-make" , PassFlag (setMode DoMake))
+ , ( "-interactive" , PassFlag (setMode DoInteractive))
+ , ( "e" , HasArg (\s -> setMode (DoEval s) "-e"))
+
+ -- -fno-code says to stop after Hsc but don't generate any code.
+ , ( "fno-code" , PassFlag (\f -> do setMode (StopBefore HCc) f
+ addFlag "-fno-code"
+ addFlag "-no-recomp"))
+ ]
+
+setMode :: CmdLineMode -> String -> ModeM ()
+setMode m flag = do
+ (old_mode, old_flag, flags) <- getCmdLineState
+ when (notNull old_flag && flag /= old_flag) $
+ throwDyn (UsageError
+ ("cannot use `" ++ old_flag ++ "' with `" ++ flag ++ "'"))
+ putCmdLineState (m, flag, flags)
+
+addFlag :: String -> ModeM ()
+addFlag s = do
+ (m, f, flags) <- getCmdLineState
+ putCmdLineState (m, f, s:flags)
+
+
+-- ----------------------------------------------------------------------------
+-- Run --make mode
+
+doMake :: Session -> [(String,Maybe Phase)] -> IO ()
+doMake sess [] = throwDyn (UsageError "no input files")
+doMake sess srcs = do
+ let (hs_srcs, non_hs_srcs) = partition haskellish srcs
+
+ haskellish (f,Nothing) =
+ looksLikeModuleName f || isHaskellSrcFilename f || '.' `notElem` f
+ haskellish (f,Just phase) =
+ phase `notElem` [As, Cc, CmmCpp, Cmm, StopLn]
+
+ dflags <- GHC.getSessionDynFlags sess
+ o_files <- mapM (compileFile dflags StopLn) non_hs_srcs
+ mapM_ (consIORef v_Ld_inputs) (reverse o_files)
+
+ targets <- mapM (uncurry GHC.guessTarget) hs_srcs
+ GHC.setTargets sess targets
+ ok_flag <- GHC.load sess LoadAllTargets
+ when (failed ok_flag) (exitWith (ExitFailure 1))
+ return ()
+
+-- ---------------------------------------------------------------------------
+-- Various banners and verbosity output.
+
+showBanner :: CmdLineMode -> DynFlags -> IO ()
+showBanner cli_mode dflags = do
+ let verb = verbosity dflags
+ -- Show the GHCi banner
+# ifdef GHCI
+ when (isInteractiveMode cli_mode && verb >= 1) $
+ hPutStrLn stdout ghciWelcomeMsg
+# endif
-beginInteractive :: [String] -> IO ()
-#ifndef GHCI
-beginInteractive = throwDyn (CmdLineError "not built for interactive use")
+ -- Display details of the configuration in verbose mode
+ when (not (isInteractiveMode cli_mode) && verb >= 2) $
+ do hPutStr stderr "Glasgow Haskell Compiler, Version "
+ hPutStr stderr cProjectVersion
+ hPutStr stderr ", for Haskell 98, compiled by GHC version "
+#ifdef GHCI
+ -- GHCI is only set when we are bootstrapping...
+ hPutStrLn stderr cProjectVersion
#else
-beginInteractive fileish_args
- = do state <- cmInit Interactive
-
- let (objs, mods) = partition objish_file fileish_args
-
- interactiveUI state mods objs
+ hPutStrLn stderr cBooterVersion
#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).
-
+showVersion :: IO ()
+showVersion = do
+ putStrLn (cProjectName ++ ", version " ++ cProjectVersion)
+ exitWith ExitSuccess
+
+showGhcUsage cli_mode = do
+ (ghc_usage_path,ghci_usage_path) <- getUsageMsgPaths
+ let usage_path
+ | DoInteractive <- cli_mode = ghci_usage_path
+ | otherwise = ghc_usage_path
+ usage <- readFile usage_path
+ dump usage
+ exitWith ExitSuccess
+ where
+ dump "" = return ()
+ dump ('$':'$':s) = putStr progName >> dump s
+ dump (c:s) = putChar c >> dump s
+
+dumpFinalStats :: DynFlags -> IO ()
+dumpFinalStats dflags =
+ when (dopt Opt_D_faststring_stats dflags) $ dumpFastStringStats dflags
+
+dumpFastStringStats :: DynFlags -> IO ()
+dumpFastStringStats dflags = do
+ buckets <- getFastStringTable
+ let (entries, longest, is_z, has_z) = countFS 0 0 0 0 buckets
+ msg = text "FastString stats:" $$
+ nest 4 (vcat [text "size: " <+> int (length buckets),
+ text "entries: " <+> int entries,
+ text "longest chain: " <+> int longest,
+ text "z-encoded: " <+> (is_z `pcntOf` entries),
+ text "has z-encoding: " <+> (has_z `pcntOf` entries)
+ ])
+ -- we usually get more "has z-encoding" than "z-encoded", because
+ -- when we z-encode a string it might hash to the exact same string,
+ -- which will is not counted as "z-encoded". Only strings whose
+ -- Z-encoding is different from the original string are counted in
+ -- the "z-encoded" total.
+ putMsg dflags msg
+ where
+ x `pcntOf` y = int ((x * 100) `quot` y) <> char '%'
+
+countFS entries longest is_z has_z [] = (entries, longest, is_z, has_z)
+countFS entries longest is_z has_z (b:bs) =
+ let
+ len = length b
+ longest' = max len longest
+ entries' = entries + len
+ is_zs = length (filter isZEncoded b)
+ has_zs = length (filter hasZEncoding b)
+ in
+ countFS entries' longest' (is_z + is_zs) (has_z + has_zs) bs
+
+-- -----------------------------------------------------------------------------
+-- Util
+
+unknownFlagsErr :: [String] -> a
+unknownFlagsErr fs = throwDyn (UsageError ("unrecognised flags: " ++ unwords fs))
projects / ghc-hetmet.git / blobdiff