-{-# OPTIONS -W -fno-warn-incomplete-patterns #-}
+{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-}
+
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.35 2000/11/24 17:09:52 simonmar Exp $
+-- $Id: Main.hs,v 1.105 2002/05/01 09:30:05 simonmar Exp $
--
-- GHC Driver program
--
--- (c) Simon Marlow 2000
+-- (c) The University of Glasgow 2002
--
-----------------------------------------------------------------------------
#ifdef GHCI
-import Interpreter
import InteractiveUI
#endif
-#ifndef mingw32_TARGET_OS
-import Dynamic
-import Posix
-#endif
-import CompManager
-import DriverPipeline
-import DriverState
-import DriverFlags
-import DriverMkDepend
-import DriverUtil
-import Panic
-import DriverPhases ( Phase(..) )
-import CmdLineOpts ( HscLang(..), DynFlags(..), v_Static_hsc_opts )
-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 )
+
+import DriverPipeline ( doLink, doMkDLL, genPipeline, pipeLoop )
+import DriverState ( buildCoreToDo, buildStgToDo,
+ findBuildTag, getPackageInfo, unregFlags,
+ v_GhcMode, v_GhcModeFlag, GhcMode(..),
+ v_Cmdline_libraries, v_Keep_tmp_files, v_Ld_inputs,
+ v_OptLevel, v_Output_file, v_Output_hi,
+ v_Package_details, v_Ways, getPackageExtraGhcOpts,
+ readPackageConf, verifyOutputFiles
+ )
+import DriverFlags ( buildStaticHscOpts,
+ dynamic_flags, processArgs, static_flags)
+
+import DriverMkDepend ( beginMkDependHS, endMkDependHS )
+import DriverPhases ( Phase(HsPp, Hsc), haskellish_src_file, objish_file )
+
+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 Outputable
import Util
+import Panic ( GhcException(..), panic )
-
-
-import Concurrent
-import Directory
-import IOExts
-import Exception
-
+-- Standard Haskell libraries
import IO
+import Directory ( doesFileExist )
+import IOExts ( readIORef, writeIORef )
+import Exception ( throwDyn, Exception(..),
+ AsyncException(StackOverflow) )
+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.)
+#ifndef mingw32_HOST_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
-----------------------------------------------------------------------------
-- ToDo:
--- -nohi doesn't work
-- new mkdependHS doesn't support all the options that the old one did (-X et al.)
-- time commands when run with -v
-- split marker
--- mkDLL
-- 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
--- -H, -K, -Rghc-timing
--- hi-diffs
--- -ddump-all doesn't do anything
+-- -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)
--- removed -noC
--- no hi diffs (could be added later)
-- no -Ofile
-----------------------------------------------------------------------------
-- Main loop
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 -> case dyn of
- PhaseFailed _phase code -> exitWith code
- Interrupted -> exitWith (ExitFailure 1)
- _ -> do hPutStrLn stderr (show (dyn :: BarfKind))
- exitWith (ExitFailure 1)
- ) $ do
+ 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 >= 2)
+ 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
-#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
+ argv <- getArgs
+ let (minusB_args, argv') = partition (prefixMatch "-B") argv
+ top_dir <- initSysTools minusB_args
- -- 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 (OtherError "can't find package.conf")
-
- -- 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")
-
- 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)
-
- -- read the package configuration
- conf_file <- readIORef v_Path_package_config
- contents <- readFile conf_file
- let pkg_details = read contents -- ToDo: faster
- 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
+ -- 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 []
-
- -- find the build tag, and re-process the build-specific options
- more_opts <- findBuildTag
- way_non_static <- processArgs static_flags more_opts []
+ 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.")
+
+ -- 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
- -- warnings
- warn_level <- readIORef v_Warning_opt
-
- let warn_opts = case warn_level of
- W_default -> standardWarnings
- W_ -> minusWOpts
- W_all -> minusWallOpts
- W_not -> []
-
- -- build the default DynFlags (these may be adjusted on a per
- -- module basis by OPTIONS pragmas and settings in the interpreter).
+ -- 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.
- opt_level <- readIORef v_OptLevel
+ dyn_flags <- getDynFlags
let lang = case mode of
- StopBefore HCc -> HscC
DoInteractive -> HscInterpreted
- _other | opt_level >= 1 -> HscC -- -O implies -fvia-C
- | otherwise -> defaultHscLang
-
- writeIORef v_DynFlags
- DynFlags{ 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 -> hscLang dyn_flags
- flags = [] }
+ 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 ++ warn_opts) []
- -- save the "initial DynFlags" away
- init_dyn_flags <- readIORef v_DynFlags
- writeIORef v_InitDynFlags init_dyn_flags
-
- -- complain about any unknown flags
- mapM unknownFlagErr [ f | f@('-':_) <- srcs ]
+ srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) []
- -- save the flag state, because this could be modified by OPTIONS
- -- pragmas during the compilation, and we'll need to restore it
- -- before starting the next compilation.
- saved_driver_state <- readIORef v_Driver_state
- writeIORef v_InitDriverState saved_driver_state
+ -- 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
when (verb >= 2)
(hPutStrLn stderr ("Using package config file: " ++ conf_file))
+ pkg_details <- readIORef v_Package_details
+ 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 || 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
- -- for each source file, find which phases to run
- let lang = hscLang init_dyn_flags
- pipelines <- mapM (genPipeline mode stop_flag True lang) srcs
- let src_pipelines = zip srcs pipelines
-
- -- sanity checking
+ -- -o sanity checking
o_file <- readIORef v_Output_file
- ohi <- readIORef v_Output_hi
- if length srcs > 1 && (isJust ohi || (isJust o_file && mode /= DoLink))
- then throwDyn (UsageError "can't apply -o or -ohi options to multiple source files")
+ if (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, phases) = do
- writeIORef v_Driver_state saved_driver_state
- writeIORef v_DynFlags init_dyn_flags
- r <- runPipeline phases src (mode==DoLink) True
+ 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
+-- hPutStrLn stderr "before" >> hFlush stderr
+ phases <- genPipeline (StopBefore Hsc) stop_flag
+ False{-not persistent-} defaultHscLang
+ src_and_suff
+-- hPutStrLn stderr "after" >> hFlush stderr
+ pipeLoop phases src_and_suff False{-no linking-} False{-no -o flag-}
+ basename suffix
+
+ -- rest of compilation
+ hsc_lang <- dynFlag hscLang
+-- hPutStrLn stderr ("before-1 " ++ show (pp,mode)) >> hFlush stderr
+ phases <- genPipeline mode stop_flag True hsc_lang pp
+-- hPutStrLn stderr "after" >> hFlush stderr
+ (r,_) <- pipeLoop phases pp (mode==DoLink || mode==DoMkDLL)
+ True{-use -o flag-} basename suffix
return r
- o_files <- mapM compileFile src_pipelines
+ 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
- [] -> writeIORef v_TopDir clibdir
- some -> writeIORef v_TopDir (drop 2 (last some)))
- return others
beginMake :: [String] -> IO ()
-beginMake mods
- = do case mods of
+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
+ _ -> do dflags <- getDynFlags
+ state <- cmInit Batch
+ graph <- cmDepAnal state dflags mods
+ (_, ok, _) <- cmLoadModules state dflags graph
+ when (not ok) (exitWith (ExitFailure 1))
return ()
- _ -> throwDyn (UsageError "only one module allowed with --make")
beginInteractive :: [String] -> IO ()
#ifndef GHCI
-beginInteractive = throwDyn (OtherError "not build for interactive use")
+beginInteractive = throwDyn (CmdLineError "not built for interactive use")
#else
-beginInteractive mods
- = do state <- cmInit Interactive
- let mod = case mods of
- [] -> Nothing
- [mod] -> Just mod
- _ -> throwDyn (UsageError
- "only one module allowed with --interactive")
- interactiveUI state mod
+beginInteractive fileish_args
+ = do minus_ls <- readIORef v_Cmdline_libraries
+
+ let (objs, mods) = partition objish_file fileish_args
+ libs = map Object objs ++ map DLL minus_ls
+
+ state <- cmInit Interactive
+ interactiveUI state mods libs
#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).
+
projects / ghc-hetmet.git / blobdiff