-{-# OPTIONS -fno-warn-incomplete-patterns #-}
+{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-}
+
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.82 2001/08/03 20:40:43 sof Exp $
+-- $Id: Main.hs,v 1.148 2005/02/10 15:26:23 simonmar Exp $
--
-- GHC Driver program
--
--- (c) Simon Marlow 2000
+-- (c) The University of Glasgow 2002
--
-----------------------------------------------------------------------------
--- with path so that ghc -M can find config.h
-#include "../includes/config.h"
-
module Main (main) where
#include "HsVersions.h"
-
#ifdef GHCI
-import InteractiveUI(ghciWelcomeMsg, interactiveUI)
+import InteractiveUI ( ghciWelcomeMsg, interactiveUI )
#endif
-import Finder ( initFinder )
-import CompManager ( cmInit, cmLoadModule )
+import DriverState ( isInteractiveMode )
+import CompManager ( cmInit, cmLoadModules, cmDepAnal )
import HscTypes ( GhciMode(..) )
import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion )
-import SysTools ( packageConfigPath, initSysTools, cleanTempFiles )
-import Packages ( showPackages, mungePackagePaths )
-import ParsePkgConf ( loadPackageConfig )
-
-import DriverPipeline ( GhcMode(..), doLink, doMkDLL, genPipeline,
- getGhcMode, pipeLoop, v_GhcMode
- )
-import DriverState ( buildCoreToDo, buildStgToDo, defaultHscLang,
- findBuildTag, getPackageInfo, unregFlags,
- v_Cmdline_libraries, v_Keep_tmp_files, v_Ld_inputs,
- v_OptLevel, v_Output_file, v_Output_hi,
- v_Package_details, v_Ways, getPackageExtraGhcOpts
+import SysTools ( initSysTools, cleanTempFiles, normalisePath )
+import Packages ( dumpPackages, initPackages, haskell98PackageId, PackageIdH(..) )
+import DriverPipeline ( staticLink, doMkDLL, compileFile )
+import DriverState ( isLinkMode,
+ isCompManagerMode, isInterpretiveMode,
+ buildStgToDo, findBuildTag, unregFlags,
+ v_GhcMode, GhcMode(..),
+ v_Keep_tmp_files, v_Ld_inputs, v_Ways,
+ v_Output_file, v_Output_hi, v_GhcLink,
+ verifyOutputFiles, GhcLink(..)
)
-import DriverFlags ( dynFlag, buildStaticHscOpts, dynamic_flags,
- processArgs, static_flags)
+import DriverFlags
-import DriverMkDepend ( beginMkDependHS, endMkDependHS )
-import DriverPhases ( Phase(Hsc, HCc), haskellish_src_file, objish_file )
-
-import DriverUtil ( add, handle, handleDyn, later, splitFilename,
- unknownFlagErr, getFileSuffix )
-import CmdLineOpts ( dynFlag, defaultDynFlags, restoreDynFlags,
- saveDynFlags, setDynFlags,
- DynFlags(..), HscLang(..), v_Static_hsc_opts
- )
+import DriverMkDepend ( doMkDependHS )
+import DriverPhases ( Phase, isStopLn, isSourceFilename )
+import DriverUtil ( add, handle, handleDyn, later, unknownFlagsErr )
+import CmdLineOpts ( DynFlags(..), HscTarget(..), v_Static_hsc_opts,
+ defaultDynFlags )
+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) )
-- Standard Haskell libraries
import IO
-import Directory ( doesFileExist )
-import IOExts ( readIORef, writeIORef )
-import Exception ( throwDyn, Exception(..) )
import System ( getArgs, exitWith, ExitCode(..) )
import Monad
import List
import Maybe
-#ifndef mingw32_TARGET_OS
-import Concurrent ( myThreadId )
-#if __GLASGOW_HASKELL__ < 500
-import Exception ( raiseInThread )
-#define throwTo raiseInThread
-#else
-import Exception ( throwTo )
-#endif
-
-import Posix ( Handler(Catch), installHandler, sigINT, sigQUIT )
-import Dynamic ( toDyn )
-#endif
-
-
------------------------------------------------------------------------------
--- Changes:
-
--- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a
--- dynamic flag whereas -package is a static flag.)
-
-----------------------------------------------------------------------------
-- ToDo:
-- 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
-----------------------------------------------------------------------------
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)
- -- let exit exceptions bubble all the way out.
- ExitException e -> exitWith e
- _other -> hPutStr stderr (show (Panic (show exception)))
+ IOException _ -> hPutStrLn 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 -> case dyn of
- PhaseFailed _phase code -> do
- hPutStr stderr "\nCompilation had errors\n"
- 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
- 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_TARGET_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
top_dir <- initSysTools minusB_args
- -- Read the package configuration
- conf_file <- packageConfigPath
- proto_pkg_details <- loadPackageConfig conf_file
- let pkg_details = mungePackagePaths top_dir proto_pkg_details
- writeIORef v_Package_details pkg_details
-
- -- find the phase to stop after (i.e. -E, -C, -c, -S flags)
- (flags2, mode, stop_flag) <- getGhcMode argv'
- writeIORef v_GhcMode mode
-
- -- process all the other arguments, and get the source files
- non_static <- processArgs static_flags flags2 []
+ -- Process all the other arguments, and get the source files
+ non_static <- processStaticFlags argv'
+ mode <- readIORef v_GhcMode
-- -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 (not (null orig_ways) && mode == DoInteractive) $
+ when (notNull orig_ways && isInterpretiveMode mode) $
do throwDyn (UsageError
"--interactive can't be used with -prof, -ticky, -unreg or -smp.")
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 <- processStaticFlags (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
+ -- set the "global" HscTarget. The HscTarget 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
-
-
+ -- HscTarget is not HscC or HscAsm, -fvia-C and -fasm have no effect.
+ let dflags0 = defaultDynFlags
let lang = case mode of
- StopBefore HCc -> HscC
DoInteractive -> HscInterpreted
- _other | opt_level >= 1 -> HscC -- -O implies -fvia-C
- | otherwise -> defaultHscLang
+ DoEval _ -> HscInterpreted
+ _other -> hscTarget dflags0
+
+ let dflags1 = dflags0{ stgToDo = stg_todo,
+ hscTarget = lang,
+ -- leave out hscOutName for now
+ hscOutName = panic "Main.main:hscOutName not set",
+ verbosity = case mode of
+ DoEval _ -> 0
+ _other -> 1
+ }
+
+ -- The rest of the arguments are "dynamic"
+ -- Leftover ones are presumably files
+ (dflags2, fileish_args) <- processDynamicFlags
+ (extra_non_static ++ non_static) dflags1
+
+ -- make sure we clean up after ourselves
+ later (do forget_it <- readIORef v_Keep_tmp_files
+ unless forget_it $ do
+ cleanTempFiles dflags2
+ ) $ do
+ -- exceptions will be blocked while we clean the temporary files,
+ -- so there shouldn't be any difficulty if we receive further
+ -- signals.
- setDynFlags (defaultDynFlags{ coreToDo = core_todo,
- stgToDo = stg_todo,
- hscLang = lang,
- -- leave out hscOutName for now
- hscOutName = panic "Main.main:hscOutName not set",
+ -- Display banner
+ showBanner mode dflags2
- verbosity = case mode of
- DoInteractive -> 1
- DoMake -> 1
- _other -> 0,
- })
+ -- Read the package config(s), and process the package-related
+ -- command-line flags
+ dflags <- initPackages dflags2
- -- the rest of the arguments are "dynamic"
- srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) []
+ let
+ {-
+ We split out the object files (.o, .dll) and add them
+ to v_Ld_inputs for use by the linker.
- -- save the "initial DynFlags" away
- saveDynFlags
+ The following things should be considered compilation manager inputs:
- -- complain about any unknown flags
- mapM unknownFlagErr [ f | f@('-':_) <- srcs ]
+ - haskell source files (strings ending in .hs, .lhs or other
+ haskellish extension),
- verb <- dynFlag verbosity
+ - module names (not forgetting hierarchical module names),
- -- Show the GHCi banner
-# ifdef GHCI
- when (mode == DoInteractive && verb >= 1) $
- hPutStrLn stdout ghciWelcomeMsg
-# endif
+ - and finally we consider everything not containing a '.' to be
+ a comp manager input, as shorthand for a .hs or .lhs filename.
- -- 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)
+ 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 configuration -----------
+ when (verbosity dflags >= 4) $
+ dumpPackages dflags
+
+ when (verbosity dflags >= 3) $
+ hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts)
- when (verb >= 2)
- (hPutStrLn stderr ("Using package config file: " ++ conf_file))
+ ---------------- Final sanity checking -----------
+ checkOptions mode srcs objs
- when (verb >= 3)
- (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts))
+ ---------------- Do the business -----------
- showPackages pkg_details
+ case mode of
+ DoMake -> doMake dflags srcs
+ DoMkDependHS -> doMkDependHS dflags srcs
+ StopBefore p -> do { o_files <- compileFiles mode dflags srcs
+ ; doLink dflags p o_files }
+#ifndef GHCI
+ DoInteractive -> noInteractiveError
+ DoEval _ -> noInteractiveError
+ where
+ noInteractiveError = throwDyn (CmdLineError "not built for interactive use")
+#else
+ DoInteractive -> interactiveUI dflags srcs Nothing
+ DoEval expr -> interactiveUI dflags srcs (Just expr)
+#endif
- -- initialise the finder
- pkg_avails <- getPackageInfo
- initFinder pkg_avails
+-- -----------------------------------------------------------------------------
+-- Option sanity checks
- -- mkdependHS is special
- when (mode == DoMkDependHS) beginMkDependHS
+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)
- -- -ohi sanity checking
- ohi <- readIORef v_Output_hi
+ -- -ohi sanity check
+ ohi <- readIORef v_Output_hi
if (isJust ohi &&
- (mode == DoMake || mode == DoInteractive || length srcs > 1))
+ (isCompManagerMode 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
o_file <- readIORef v_Output_file
- if (length srcs > 1 && isJust o_file && mode /= DoLink && mode /= DoMkDLL)
+ if (srcs `lengthExceeds` 1 && isJust o_file && not (isLinkMode 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)
- pp <- if not (haskellish_src_file src) || mode == StopBefore Hsc
- 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
- when (mode == DoLink) (doLink o_files)
- when (mode == DoMkDLL) (doMkDLL o_files)
-
-
-
-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
- (_, ok, _) <- cmLoadModule state mods
- when (not ok) (exitWith (ExitFailure 1))
- return ()
-
-
-beginInteractive :: [String] -> IO ()
-#ifndef GHCI
-beginInteractive = throwDyn (CmdLineError "not built for interactive use")
-#else
-beginInteractive fileish_args
- = do minus_ls <- readIORef v_Cmdline_libraries
+ -- Check that there are some input files
+ -- (except in the interactive case)
+ if null srcs && null objs && not (isInterpretiveMode mode)
+ then throwDyn (UsageError "no input files")
+ else do
- let (objs, mods) = partition objish_file fileish_args
- libs = map Left objs ++ map Right minus_ls
+ -- Verify that output files point somewhere sensible.
+ verifyOutputFiles
+
+-- -----------------------------------------------------------------------------
+-- Compile files in one-shot mode.
+
+compileFiles :: GhcMode
+ -> DynFlags
+ -> [String] -- Source files
+ -> IO [String] -- Object files
+compileFiles mode dflags srcs = mapM (compileFile mode dflags) srcs
+
+
+doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
+doLink dflags stop_phase o_files
+ | not (isStopLn stop_phase)
+ = return () -- We stopped before the linking phase
+
+ | otherwise
+ = do { ghc_link <- readIORef v_GhcLink
+ ; case ghc_link of
+ NoLink -> return ()
+ StaticLink -> staticLink dflags o_files link_pkgs
+ MkDLL -> doMkDLL dflags o_files link_pkgs
+ }
+ where
+ -- Always link in the haskell98 package for static linking. Other
+ -- packages have to be specified via the -package flag.
+ link_pkgs
+ | ExtPackage h98_id <- haskell98PackageId (pkgState dflags) = [h98_id]
+ | otherwise = []
+
+
+-- ----------------------------------------------------------------------------
+-- Run --make mode
+
+doMake :: DynFlags -> [String] -> IO ()
+doMake dflags [] = throwDyn (UsageError "no input files")
+doMake dflags srcs = do
+ 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.
+
+showBanner :: GhcMode -> DynFlags -> IO ()
+showBanner mode dflags = do
+ let verb = verbosity dflags
+ -- Show the GHCi banner
+# ifdef GHCI
+ when (isInteractiveMode mode && verb >= 1) $
+ hPutStrLn stdout ghciWelcomeMsg
+# endif
- state <- cmInit Interactive
- interactiveUI state mods libs
-#endif
+ -- Display details of the configuration in verbose mode
+ when (not (isInteractiveMode mode) && verb >= 2) $
+ do hPutStr stderr "Glasgow Haskell Compiler, Version "
+ hPutStr stderr cProjectVersion
+ hPutStr stderr ", for Haskell 98, compiled by GHC version "
+ hPutStrLn stderr cBooterVersion
projects / ghc-hetmet.git / blobdiff