-- The official GHC API
import qualified GHC
-import GHC ( DynFlags(..), HscTarget(..),
- GhcMode(..), GhcLink(..),
- LoadHowMuch(..), dopt, DynFlag(..),
- defaultCallbacks )
+import GHC ( -- DynFlags(..), HscTarget(..),
+ -- GhcMode(..), GhcLink(..),
+ Ghc, GhcMonad(..),
+ LoadHowMuch(..) )
import CmdLineParser
-- Implementations of the various modes (--show-iface, mkdependHS. etc.)
import InteractiveUI ( interactiveUI, ghciWelcomeMsg )
#endif
+
-- Various other random stuff that we need
import Config
import HscTypes
import Panic
import MonadUtils ( liftIO )
+-- Imports for --abi-hash
+import LoadIface ( loadUserInterface )
+import Module ( mkModuleName )
+import Finder ( findImportedModule, cannotFindInterface )
+import TcRnMonad ( initIfaceCheck )
+import Binary ( openBinMem, put_, fingerprintBinMem )
+
-- Standard Haskell libraries
import System.IO
import System.Environment
import System.Exit
import System.FilePath
import Control.Monad
+import Data.Char
import Data.List
import Data.Maybe
-- GHC's command-line interface
main :: IO ()
-main =
-
- GHC.defaultErrorHandler defaultDynFlags $ do
- -- 1. extract the -B flag from the args
- argv0 <- getArgs
+main = do
+ hSetBuffering stdout NoBuffering
+ GHC.defaultErrorHandler defaultDynFlags $ do
+ -- 1. extract the -B flag from the args
+ argv0 <- getArgs
- let
- (minusB_args, argv1) = partition ("-B" `isPrefixOf`) argv0
+ let (minusB_args, argv1) = partition ("-B" `isPrefixOf`) argv0
mbMinusB | null minusB_args = Nothing
| otherwise = Just (drop 2 (last minusB_args))
- let argv1' = map (mkGeneralLocated "on the commandline") argv1
- (argv2, staticFlagWarnings) <- parseStaticFlags argv1'
-
- -- 2. Parse the "mode" flags (--make, --interactive etc.)
- (m_uber_mode, cli_mode, argv3, modeFlagWarnings) <- parseModeFlags argv2
-
- -- If all we want to do is to show the version number then do it
- -- now, before we start a GHC session etc.
- -- If we do it later then bootstrapping gets confused as it tries
- -- to find out what version of GHC it's using before package.conf
- -- exists, so starting the session fails.
- case m_uber_mode of
- -- ShowUsage currently has to be handled specially, as it needs to
- -- actually start up GHC so that it can find the usage.txt files
- -- in the libdir. It would be nice to embed the text in the
- -- executable so that we don't have to do that, and things are more
- -- uniform here.
- Just ShowUsage -> return ()
- Just um ->
- do case um of
- ShowInfo -> showInfo
- ShowSupportedLanguages -> showSupportedLanguages
- ShowVersion -> showVersion
- ShowNumVersion -> putStrLn cProjectVersion
- exitWith ExitSuccess
- Nothing -> return ()
-
- -- start our GHC session
- GHC.runGhc mbMinusB $ do
-
- dflags0 <- GHC.getSessionDynFlags
-
+ let argv1' = map (mkGeneralLocated "on the commandline") argv1
+ (argv2, staticFlagWarnings) <- parseStaticFlags argv1'
+
+ -- 2. Parse the "mode" flags (--make, --interactive etc.)
+ (mode, argv3, modeFlagWarnings) <- parseModeFlags argv2
+
+ let flagWarnings = staticFlagWarnings ++ modeFlagWarnings
+
+ -- If all we want to do is something like showing the version number
+ -- then do it now, before we start a GHC session etc. This makes
+ -- getting basic information much more resilient.
+
+ -- In particular, if we wait until later before giving the version
+ -- number then bootstrapping gets confused, as it tries to find out
+ -- what version of GHC it's using before package.conf exists, so
+ -- starting the session fails.
+ case mode of
+ Left preStartupMode ->
+ do case preStartupMode of
+ ShowSupportedExtensions -> showSupportedExtensions
+ ShowVersion -> showVersion
+ ShowNumVersion -> putStrLn cProjectVersion
+ Print str -> putStrLn str
+ Right postStartupMode ->
+ -- start our GHC session
+ GHC.runGhc mbMinusB $ do
+
+ dflags <- GHC.getSessionDynFlags
+
+ case postStartupMode of
+ Left preLoadMode ->
+ liftIO $ do
+ case preLoadMode of
+ ShowInfo -> showInfo dflags
+ ShowGhcUsage -> showGhcUsage dflags
+ ShowGhciUsage -> showGhciUsage dflags
+ PrintWithDynFlags f -> putStrLn (f dflags)
+ Right postLoadMode ->
+ main' postLoadMode dflags argv3 flagWarnings
+
+main' :: PostLoadMode -> DynFlags -> [Located String] -> [Located String]
+ -> Ghc ()
+main' postLoadMode dflags0 args flagWarnings = do
-- set the default GhcMode, HscTarget and GhcLink. 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 dflt_target = hscTarget dflags0
(mode, lang, link)
- = case cli_mode of
- DoInteractive -> (CompManager, HscInterpreted, LinkInMemory)
- DoEval _ -> (CompManager, HscInterpreted, LinkInMemory)
- DoMake -> (CompManager, dflt_target, LinkBinary)
- DoMkDependHS -> (MkDepend, dflt_target, LinkBinary)
- _ -> (OneShot, dflt_target, LinkBinary)
+ = case postLoadMode of
+ DoInteractive -> (CompManager, HscInterpreted, LinkInMemory)
+ DoEval _ -> (CompManager, HscInterpreted, LinkInMemory)
+ DoMake -> (CompManager, dflt_target, LinkBinary)
+ DoMkDependHS -> (MkDepend, dflt_target, LinkBinary)
+ DoAbiHash -> (OneShot, dflt_target, LinkBinary)
+ _ -> (OneShot, dflt_target, LinkBinary)
let dflags1 = dflags0{ ghcMode = mode,
- hscTarget = lang,
+ hscTarget = lang,
ghcLink = link,
- -- leave out hscOutName for now
+ -- leave out hscOutName for now
hscOutName = panic "Main.main:hscOutName not set",
- verbosity = case cli_mode of
- DoEval _ -> 0
- _other -> 1
- }
+ verbosity = case postLoadMode of
+ DoEval _ -> 0
+ _other -> 1
+ }
-- turn on -fimplicit-import-qualified for GHCi now, so that it
-- can be overriden from the command-line
- dflags1a | DoInteractive <- cli_mode = imp_qual_enabled
- | DoEval _ <- cli_mode = imp_qual_enabled
+ dflags1a | DoInteractive <- postLoadMode = imp_qual_enabled
+ | DoEval _ <- postLoadMode = imp_qual_enabled
| otherwise = dflags1
where imp_qual_enabled = dflags1 `dopt_set` Opt_ImplicitImportQualified
-- The rest of the arguments are "dynamic"
-- Leftover ones are presumably files
- (dflags2, fileish_args, dynamicFlagWarnings) <- GHC.parseDynamicFlags dflags1a argv3
+ (dflags2, fileish_args, dynamicFlagWarnings) <- GHC.parseDynamicFlags dflags1a args
- -- As noted earlier, currently we hvae to handle ShowUsage down here
- case m_uber_mode of
- Just ShowUsage -> liftIO $ showGhcUsage dflags2 cli_mode
- _ -> return ()
-
- let flagWarnings = staticFlagWarnings
- ++ modeFlagWarnings
- ++ dynamicFlagWarnings
+ let flagWarnings' = flagWarnings ++ dynamicFlagWarnings
handleSourceError (\e -> do
- GHC.printExceptionAndWarnings e
- liftIO $ exitWith (ExitFailure 1)) $
- handleFlagWarnings dflags2 flagWarnings
+ GHC.printException e
+ liftIO $ exitWith (ExitFailure 1)) $ do
+ liftIO $ handleFlagWarnings dflags2 flagWarnings'
-- make sure we clean up after ourselves
GHC.defaultCleanupHandler dflags2 $ do
- liftIO $ showBanner cli_mode dflags2
+ liftIO $ showBanner postLoadMode dflags2
-- we've finished manipulating the DynFlags, update the session
_ <- GHC.setSessionDynFlags dflags2
liftIO $ hPutStrLn stderr ("Hsc static flags: " ++ unwords staticFlags)
---------------- Final sanity checking -----------
- liftIO $ checkOptions cli_mode dflags3 srcs objs
+ liftIO $ checkOptions postLoadMode dflags3 srcs objs
---------------- Do the business -----------
handleSourceError (\e -> do
- GHC.printExceptionAndWarnings e
+ GHC.printException e
liftIO $ exitWith (ExitFailure 1)) $ do
- case cli_mode of
- PrintLibdir -> liftIO $ putStrLn (topDir dflags3)
+ case postLoadMode of
ShowInterface f -> liftIO $ doShowIface dflags3 f
DoMake -> doMake srcs
DoMkDependHS -> doMkDependHS (map fst srcs)
- StopBefore p -> oneShot hsc_env p srcs >> GHC.printWarnings
+ StopBefore p -> liftIO (oneShot hsc_env p srcs)
DoInteractive -> interactiveUI srcs Nothing
DoEval exprs -> interactiveUI srcs $ Just $ reverse exprs
+ DoAbiHash -> abiHash srcs
liftIO $ dumpFinalStats dflags3
- liftIO $ exitWith ExitSuccess
#ifndef GHCI
interactiveUI :: b -> c -> Ghc ()
-- | Ensure sanity of options.
--
-- Throws 'UsageError' or 'CmdLineError' if not.
-checkOptions :: CmdLineMode -> DynFlags -> [(String,Maybe Phase)] -> [String] -> IO ()
+checkOptions :: PostLoadMode -> DynFlags -> [(String,Maybe Phase)] -> [String] -> IO ()
-- Final sanity checking before kicking off a compilation (pipeline).
-checkOptions cli_mode dflags srcs objs = do
+checkOptions mode dflags srcs objs = do
-- Complain about any unknown flags
let unknown_opts = [ f | (f@('-':_), _) <- srcs ]
when (notNull unknown_opts) (unknownFlagsErr unknown_opts)
when (notNull (filter isRTSWay (wayNames dflags))
- && isInterpretiveMode cli_mode) $
+ && isInterpretiveMode mode) $
hPutStrLn stderr ("Warning: -debug, -threaded and -ticky are ignored by GHCi")
-- -prof and --interactive are not a good combination
when (notNull (filter (not . isRTSWay) (wayNames dflags))
- && isInterpretiveMode cli_mode) $
+ && isInterpretiveMode mode) $
do ghcError (UsageError
"--interactive can't be used with -prof or -unreg.")
-- -ohi sanity check
if (isJust (outputHi dflags) &&
- (isCompManagerMode cli_mode || srcs `lengthExceeds` 1))
+ (isCompManagerMode mode || srcs `lengthExceeds` 1))
then ghcError (UsageError "-ohi can only be used when compiling a single source file")
else do
-- -o sanity checking
if (srcs `lengthExceeds` 1 && isJust (outputFile dflags)
- && not (isLinkMode cli_mode))
+ && not (isLinkMode mode))
then ghcError (UsageError "can't apply -o to multiple source files")
else do
- let not_linking = not (isLinkMode cli_mode) || isNoLink (ghcLink dflags)
+ let not_linking = not (isLinkMode mode) || isNoLink (ghcLink dflags)
when (not_linking && not (null objs)) $
hPutStrLn stderr ("Warning: the following files would be used as linker inputs, but linking is not being done: " ++ unwords objs)
-- Check that there are some input files
-- (except in the interactive case)
- if null srcs && (null objs || not_linking) && needsInputsMode cli_mode
+ if null srcs && (null objs || not_linking) && needsInputsMode mode
then ghcError (UsageError "no input files")
else do
-----------------------------------------------------------------------------
-- GHC modes of operation
-data UberMode
- = ShowUsage -- ghc -?
- | ShowVersion -- ghc -V/--version
+type Mode = Either PreStartupMode PostStartupMode
+type PostStartupMode = Either PreLoadMode PostLoadMode
+
+data PreStartupMode
+ = ShowVersion -- ghc -V/--version
| ShowNumVersion -- ghc --numeric-version
- | ShowSupportedLanguages -- ghc --supported-languages
- | ShowInfo -- ghc --info
- deriving (Show)
+ | ShowSupportedExtensions -- ghc --supported-extensions
+ | Print String -- ghc --print-foo
+
+showVersionMode, showNumVersionMode, showSupportedExtensionsMode :: Mode
+showVersionMode = mkPreStartupMode ShowVersion
+showNumVersionMode = mkPreStartupMode ShowNumVersion
+showSupportedExtensionsMode = mkPreStartupMode ShowSupportedExtensions
+
+printMode :: String -> Mode
+printMode str = mkPreStartupMode (Print str)
+
+mkPreStartupMode :: PreStartupMode -> Mode
+mkPreStartupMode = Left
+
+isShowVersionMode :: Mode -> Bool
+isShowVersionMode (Left ShowVersion) = True
+isShowVersionMode _ = False
+
+isShowNumVersionMode :: Mode -> Bool
+isShowNumVersionMode (Left ShowNumVersion) = True
+isShowNumVersionMode _ = False
+
+data PreLoadMode
+ = ShowGhcUsage -- ghc -?
+ | ShowGhciUsage -- ghci -?
+ | ShowInfo -- ghc --info
+ | PrintWithDynFlags (DynFlags -> String) -- ghc --print-foo
-data CmdLineMode
- = PrintLibdir -- ghc --print-libdir
- | ShowInterface String -- ghc --show-iface
+showGhcUsageMode, showGhciUsageMode, showInfoMode :: Mode
+showGhcUsageMode = mkPreLoadMode ShowGhcUsage
+showGhciUsageMode = mkPreLoadMode ShowGhciUsage
+showInfoMode = mkPreLoadMode ShowInfo
+
+printWithDynFlagsMode :: (DynFlags -> String) -> Mode
+printWithDynFlagsMode f = mkPreLoadMode (PrintWithDynFlags f)
+
+mkPreLoadMode :: PreLoadMode -> Mode
+mkPreLoadMode = Right . Left
+
+isShowGhcUsageMode :: Mode -> Bool
+isShowGhcUsageMode (Right (Left ShowGhcUsage)) = True
+isShowGhcUsageMode _ = False
+
+isShowGhciUsageMode :: Mode -> Bool
+isShowGhciUsageMode (Right (Left ShowGhciUsage)) = True
+isShowGhciUsageMode _ = False
+
+data PostLoadMode
+ = ShowInterface FilePath -- 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 foo -e bar => DoEval ["bar", "foo"]
- deriving (Show)
+ | DoAbiHash -- ghc --abi-hash
+
+doMkDependHSMode, doMakeMode, doInteractiveMode, doAbiHashMode :: Mode
+doMkDependHSMode = mkPostLoadMode DoMkDependHS
+doMakeMode = mkPostLoadMode DoMake
+doInteractiveMode = mkPostLoadMode DoInteractive
+doAbiHashMode = mkPostLoadMode DoAbiHash
+
+showInterfaceMode :: FilePath -> Mode
+showInterfaceMode fp = mkPostLoadMode (ShowInterface fp)
+
+stopBeforeMode :: Phase -> Mode
+stopBeforeMode phase = mkPostLoadMode (StopBefore phase)
+
+doEvalMode :: String -> Mode
+doEvalMode str = mkPostLoadMode (DoEval [str])
+
+mkPostLoadMode :: PostLoadMode -> Mode
+mkPostLoadMode = Right . Right
+
+isDoInteractiveMode :: Mode -> Bool
+isDoInteractiveMode (Right (Right DoInteractive)) = True
+isDoInteractiveMode _ = False
+
+isStopLnMode :: Mode -> Bool
+isStopLnMode (Right (Right (StopBefore StopLn))) = True
+isStopLnMode _ = False
+
+isDoMakeMode :: Mode -> Bool
+isDoMakeMode (Right (Right DoMake)) = True
+isDoMakeMode _ = False
#ifdef GHCI
-isInteractiveMode :: CmdLineMode -> Bool
+isInteractiveMode :: PostLoadMode -> Bool
isInteractiveMode DoInteractive = True
isInteractiveMode _ = False
#endif
-- isInterpretiveMode: byte-code compiler involved
-isInterpretiveMode :: CmdLineMode -> Bool
+isInterpretiveMode :: PostLoadMode -> Bool
isInterpretiveMode DoInteractive = True
isInterpretiveMode (DoEval _) = True
isInterpretiveMode _ = False
-needsInputsMode :: CmdLineMode -> Bool
+needsInputsMode :: PostLoadMode -> Bool
needsInputsMode DoMkDependHS = True
needsInputsMode (StopBefore _) = True
needsInputsMode DoMake = True
-- True if we are going to attempt to link in this mode.
-- (we might not actually link, depending on the GhcLink flag)
-isLinkMode :: CmdLineMode -> Bool
+isLinkMode :: PostLoadMode -> Bool
isLinkMode (StopBefore StopLn) = True
isLinkMode DoMake = True
isLinkMode DoInteractive = True
isLinkMode (DoEval _) = True
isLinkMode _ = False
-isCompManagerMode :: CmdLineMode -> Bool
+isCompManagerMode :: PostLoadMode -> Bool
isCompManagerMode DoMake = True
isCompManagerMode DoInteractive = True
isCompManagerMode (DoEval _) = True
isCompManagerMode _ = False
-
-- -----------------------------------------------------------------------------
-- Parsing the mode flag
parseModeFlags :: [Located String]
- -> IO (Maybe UberMode,
- CmdLineMode,
+ -> IO (Mode,
[Located String],
[Located String])
parseModeFlags args = do
- let ((leftover, errs, warns), (mUberMode, mode, _, flags')) =
+ let ((leftover, errs1, warns), (mModeFlag, errs2, flags')) =
runCmdLine (processArgs mode_flags args)
- (Nothing, StopBefore StopLn, "", [])
+ (Nothing, [], [])
+ mode = case mModeFlag of
+ Nothing -> doMakeMode
+ Just (m, _) -> m
+ errs = errs1 ++ map (mkGeneralLocated "on the commandline") errs2
when (not (null errs)) $ ghcError $ errorsToGhcException errs
- return (mUberMode, mode, flags' ++ leftover, warns)
+ return (mode, flags' ++ leftover, warns)
-type ModeM = CmdLineP (Maybe UberMode, CmdLineMode, String, [Located String])
+type ModeM = CmdLineP (Maybe (Mode, String), [String], [Located String])
-- mode flags sometimes give rise to new DynFlags (eg. -C, see below)
-- so we collect the new ones and return them.
mode_flags :: [Flag ModeM]
mode_flags =
[ ------- help / version ----------------------------------------------
- Flag "?" (NoArg (setUberMode ShowUsage))
- Supported
- , Flag "-help" (NoArg (setUberMode ShowUsage))
- Supported
- , Flag "V" (NoArg (setUberMode ShowVersion))
- Supported
- , Flag "-version" (NoArg (setUberMode ShowVersion))
- Supported
- , Flag "-numeric-version" (NoArg (setUberMode ShowNumVersion))
- Supported
- , Flag "-info" (NoArg (setUberMode ShowInfo))
- Supported
- , Flag "-supported-languages" (NoArg (setUberMode ShowSupportedLanguages))
- Supported
- , Flag "-print-libdir" (PassFlag (setMode PrintLibdir))
- Supported
-
+ Flag "?" (PassFlag (setMode showGhcUsageMode))
+ , Flag "-help" (PassFlag (setMode showGhcUsageMode))
+ , Flag "V" (PassFlag (setMode showVersionMode))
+ , Flag "-version" (PassFlag (setMode showVersionMode))
+ , Flag "-numeric-version" (PassFlag (setMode showNumVersionMode))
+ , Flag "-info" (PassFlag (setMode showInfoMode))
+ , Flag "-supported-languages" (PassFlag (setMode showSupportedExtensionsMode))
+ , Flag "-supported-extensions" (PassFlag (setMode showSupportedExtensionsMode))
+ ] ++
+ [ Flag k' (PassFlag (setMode mode))
+ | (k, v) <- compilerInfo,
+ let k' = "-print-" ++ map (replaceSpace . toLower) k
+ replaceSpace ' ' = '-'
+ replaceSpace c = c
+ mode = case v of
+ String str -> printMode str
+ FromDynFlags f -> printWithDynFlagsMode f
+ ] ++
------- interfaces ----------------------------------------------------
- , Flag "-show-iface" (HasArg (\f -> setMode (ShowInterface f)
+ [ Flag "-show-iface" (HasArg (\f -> setMode (showInterfaceMode f)
"--show-iface"))
- Supported
------- primary modes ------------------------------------------------
- , Flag "M" (PassFlag (setMode DoMkDependHS))
- Supported
- , Flag "E" (PassFlag (setMode (StopBefore anyHsc)))
- Supported
- , Flag "C" (PassFlag (\f -> do setMode (StopBefore HCc) f
- addFlag "-fvia-C"))
- Supported
- , Flag "S" (PassFlag (setMode (StopBefore As)))
- Supported
- , Flag "-make" (PassFlag (setMode DoMake))
- Supported
- , Flag "-interactive" (PassFlag (setMode DoInteractive))
- Supported
- , Flag "e" (HasArg (\s -> updateMode (updateDoEval s) "-e"))
- Supported
-
- -- -fno-code says to stop after Hsc but don't generate any code.
- , Flag "fno-code" (PassFlag (\f -> do setMode (StopBefore HCc) f
- addFlag "-fno-code"
- addFlag "-fforce-recomp"))
- Supported
+ , Flag "c" (PassFlag (\f -> do setMode (stopBeforeMode StopLn) f
+ addFlag "-no-link" f))
+ , Flag "M" (PassFlag (setMode doMkDependHSMode))
+ , Flag "E" (PassFlag (setMode (stopBeforeMode anyHsc)))
+ , Flag "C" (PassFlag (\f -> do setMode (stopBeforeMode HCc) f
+ addFlag "-fvia-C" f))
+ , Flag "S" (PassFlag (setMode (stopBeforeMode As)))
+ , Flag "-make" (PassFlag (setMode doMakeMode))
+ , Flag "-interactive" (PassFlag (setMode doInteractiveMode))
+ , Flag "-abi-hash" (PassFlag (setMode doAbiHashMode))
+ , Flag "e" (SepArg (\s -> setMode (doEvalMode s) "-e"))
]
-setUberMode :: UberMode -> ModeM ()
-setUberMode m = do
- (_, cmdLineMode, flag, flags') <- getCmdLineState
- putCmdLineState (Just m, cmdLineMode, flag, flags')
-
-setMode :: CmdLineMode -> String -> ModeM ()
-setMode m flag = updateMode (\_ -> m) flag
-
-updateDoEval :: String -> CmdLineMode -> CmdLineMode
-updateDoEval expr (DoEval exprs) = DoEval (expr : exprs)
-updateDoEval expr _ = DoEval [expr]
-
-updateMode :: (CmdLineMode -> CmdLineMode) -> String -> ModeM ()
-updateMode f flag = do
- (m_uber_mode, old_mode, old_flag, flags') <- getCmdLineState
- if null old_flag || flag == old_flag
- then putCmdLineState (m_uber_mode, f old_mode, flag, flags')
- else ghcError (UsageError
- ("cannot use `" ++ old_flag ++ "' with `" ++ flag ++ "'"))
-
-addFlag :: String -> ModeM ()
-addFlag s = do
- (u, m, f, flags') <- getCmdLineState
- -- XXX Can we get a useful Loc?
- putCmdLineState (u, m, f, mkGeneralLocated "addFlag" s : flags')
-
+setMode :: Mode -> String -> EwM ModeM ()
+setMode newMode newFlag = liftEwM $ do
+ (mModeFlag, errs, flags') <- getCmdLineState
+ let (modeFlag', errs') =
+ case mModeFlag of
+ Nothing -> ((newMode, newFlag), errs)
+ Just (oldMode, oldFlag) ->
+ case (oldMode, newMode) of
+ -- -c/--make are allowed together, and mean --make -no-link
+ _ | isStopLnMode oldMode && isDoMakeMode newMode
+ || isStopLnMode newMode && isDoMakeMode oldMode ->
+ ((doMakeMode, "--make"), [])
+
+ -- If we have both --help and --interactive then we
+ -- want showGhciUsage
+ _ | isShowGhcUsageMode oldMode &&
+ isDoInteractiveMode newMode ->
+ ((showGhciUsageMode, oldFlag), [])
+ | isShowGhcUsageMode newMode &&
+ isDoInteractiveMode oldMode ->
+ ((showGhciUsageMode, newFlag), [])
+ -- Otherwise, --help/--version/--numeric-version always win
+ | isDominantFlag oldMode -> ((oldMode, oldFlag), [])
+ | isDominantFlag newMode -> ((newMode, newFlag), [])
+ -- We need to accumulate eval flags like "-e foo -e bar"
+ (Right (Right (DoEval esOld)),
+ Right (Right (DoEval [eNew]))) ->
+ ((Right (Right (DoEval (eNew : esOld))), oldFlag),
+ errs)
+ -- Saying e.g. --interactive --interactive is OK
+ _ | oldFlag == newFlag -> ((oldMode, oldFlag), errs)
+ -- Otherwise, complain
+ _ -> let err = flagMismatchErr oldFlag newFlag
+ in ((oldMode, oldFlag), err : errs)
+ putCmdLineState (Just modeFlag', errs', flags')
+ where isDominantFlag f = isShowGhcUsageMode f ||
+ isShowGhciUsageMode f ||
+ isShowVersionMode f ||
+ isShowNumVersionMode f
+
+flagMismatchErr :: String -> String -> String
+flagMismatchErr oldFlag newFlag
+ = "cannot use `" ++ oldFlag ++ "' with `" ++ newFlag ++ "'"
+
+addFlag :: String -> String -> EwM ModeM ()
+addFlag s flag = liftEwM $ do
+ (m, e, flags') <- getCmdLineState
+ putCmdLineState (m, e, mkGeneralLocated loc s : flags')
+ where loc = "addFlag by " ++ flag ++ " on the commandline"
-- ----------------------------------------------------------------------------
-- Run --make mode
doMake :: [(String,Maybe Phase)] -> Ghc ()
-doMake [] = ghcError (UsageError "no input files")
doMake srcs = do
let (hs_srcs, non_hs_srcs) = partition haskellish srcs
phase `notElem` [As, Cc, CmmCpp, Cmm, StopLn]
hsc_env <- GHC.getSession
- o_files <- mapM (\x -> do
- f <- compileFile hsc_env StopLn x
- GHC.printWarnings
- return f)
+
+ -- if we have no haskell sources from which to do a dependency
+ -- analysis, then just do one-shot compilation and/or linking.
+ -- This means that "ghc Foo.o Bar.o -o baz" links the program as
+ -- we expect.
+ if (null hs_srcs)
+ then liftIO (oneShot hsc_env StopLn srcs)
+ else do
+
+ o_files <- mapM (\x -> liftIO $ compileFile hsc_env StopLn x)
non_hs_srcs
liftIO $ mapM_ (consIORef v_Ld_inputs) (reverse o_files)
doShowIface :: DynFlags -> FilePath -> IO ()
doShowIface dflags file = do
- hsc_env <- newHscEnv defaultCallbacks dflags
+ hsc_env <- newHscEnv dflags
showIface hsc_env file
-- ---------------------------------------------------------------------------
-- Various banners and verbosity output.
-showBanner :: CmdLineMode -> DynFlags -> IO ()
-showBanner _cli_mode dflags = do
+showBanner :: PostLoadMode -> DynFlags -> IO ()
+showBanner _postLoadMode dflags = do
let verb = verbosity dflags
#ifdef GHCI
-- Show the GHCi banner
- when (isInteractiveMode _cli_mode && verb >= 1) $ putStrLn ghciWelcomeMsg
+ when (isInteractiveMode _postLoadMode && verb >= 1) $ putStrLn 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, stage "
+ hPutStr stderr ", stage "
hPutStr stderr cStage
hPutStr stderr " booted by GHC version "
hPutStrLn stderr cBooterVersion
-- We print out a Read-friendly string, but a prettier one than the
-- Show instance gives us
-showInfo :: IO ()
-showInfo = do
- let sq x = " [" ++ x ++ "\n ]"
- putStrLn $ sq $ concat $ intersperse "\n ," $ map show compilerInfo
- exitWith ExitSuccess
+showInfo :: DynFlags -> IO ()
+showInfo dflags = do
+ let sq x = " [" ++ x ++ "\n ]"
+ putStrLn $ sq $ concat $ intersperse "\n ," $ map (show . flatten) compilerInfo
+ where flatten (k, String v) = (k, v)
+ flatten (k, FromDynFlags f) = (k, f dflags)
-showSupportedLanguages :: IO ()
-showSupportedLanguages = do mapM_ putStrLn supportedLanguages
- exitWith ExitSuccess
+showSupportedExtensions :: IO ()
+showSupportedExtensions = mapM_ putStrLn supportedLanguagesAndExtensions
showVersion :: IO ()
-showVersion = do
- putStrLn (cProjectName ++ ", version " ++ cProjectVersion)
- exitWith ExitSuccess
-
-showGhcUsage :: DynFlags -> CmdLineMode -> IO ()
-showGhcUsage dflags cli_mode = do
- let usage_path
- | DoInteractive <- cli_mode = ghciUsagePath dflags
- | otherwise = ghcUsagePath dflags
+showVersion = putStrLn (cProjectName ++ ", version " ++ cProjectVersion)
+
+showGhcUsage :: DynFlags -> IO ()
+showGhcUsage = showUsage False
+
+showGhciUsage :: DynFlags -> IO ()
+showGhciUsage = showUsage True
+
+showUsage :: Bool -> DynFlags -> IO ()
+showUsage ghci dflags = do
+ let usage_path = if ghci then ghciUsagePath dflags
+ else ghcUsagePath dflags
usage <- readFile usage_path
dump usage
- exitWith ExitSuccess
where
- dump "" = return ()
+ dump "" = return ()
dump ('$':'$':s) = putStr progName >> dump s
- dump (c:s) = putChar c >> dump s
+ dump (c:s) = putChar c >> dump s
dumpFinalStats :: DynFlags -> IO ()
dumpFinalStats dflags =
countFS entries' longest' (is_z + is_zs) (has_z + has_zs) bs
-- -----------------------------------------------------------------------------
+-- ABI hash support
+
+{-
+ ghc --abi-hash Data.Foo System.Bar
+
+Generates a combined hash of the ABI for modules Data.Foo and
+System.Bar. The modules must already be compiled, and appropriate -i
+options may be necessary in order to find the .hi files.
+
+This is used by Cabal for generating the InstalledPackageId for a
+package. The InstalledPackageId must change when the visible ABI of
+the package chagnes, so during registration Cabal calls ghc --abi-hash
+to get a hash of the package's ABI.
+-}
+
+abiHash :: [(String, Maybe Phase)] -> Ghc ()
+abiHash strs = do
+ hsc_env <- getSession
+ let dflags = hsc_dflags hsc_env
+
+ liftIO $ do
+
+ let find_it str = do
+ let modname = mkModuleName str
+ r <- findImportedModule hsc_env modname Nothing
+ case r of
+ Found _ m -> return m
+ _error -> ghcError $ CmdLineError $ showSDoc $
+ cannotFindInterface dflags modname r
+
+ mods <- mapM find_it (map fst strs)
+
+ let get_iface modl = loadUserInterface False (text "abiHash") modl
+ ifaces <- initIfaceCheck hsc_env $ mapM get_iface mods
+
+ bh <- openBinMem (3*1024) -- just less than a block
+ mapM_ (put_ bh . mi_mod_hash) ifaces
+ f <- fingerprintBinMem bh
+
+ putStrLn (showSDoc (ppr f))
+
+-- -----------------------------------------------------------------------------
-- Util
unknownFlagsErr :: [String] -> a
projects / ghc-hetmet.git / blobdiff