-{-# OPTIONS -W -fno-warn-incomplete-patterns #-}
+{-# OPTIONS -fno-warn-incomplete-patterns #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.6 2000/10/17 13:22:11 simonmar Exp $
+-- $Id: Main.hs,v 1.65 2001/05/23 09:59:18 simonmar Exp $
--
-- GHC Driver program
--
#include "HsVersions.h"
+
+#ifdef GHCI
+import InteractiveUI
+#endif
+
+#ifndef mingw32_TARGET_OS
+import Dynamic
+import Posix
+#endif
+
+import CompManager
+import ParsePkgConf
import DriverPipeline
import DriverState
import DriverFlags
import DriverMkDepend
import DriverUtil
+import Panic
+import DriverPhases ( Phase(..), haskellish_src_file, objish_file )
+import CmdLineOpts
import TmpFiles
+import Finder ( initFinder )
+import CmStaticInfo
import Config
+import Outputable
import Util
-import Panic
import Concurrent
-#ifndef mingw32_TARGET_OS
-import Posix
-#endif
import Directory
import IOExts
import Exception
-import Dynamic
import IO
import Monad
import System
import Maybe
+
-----------------------------------------------------------------------------
-- Changes:
-----------------------------------------------------------------------------
-- 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
+-- -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 ->
+ case exception of
+#if __GLASGOW_HASKELL__ >= 501
+ ExitException _ -> throw exception
+#endif
+ _other -> do 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))
+ _ -> do hPutStrLn stderr (show (dyn :: GhcException))
exitWith (ExitFailure 1)
- ) $ do
+ ) $ do
-- make sure we clean up after ourselves
- later (do forget_it <- readIORef keep_tmp_files
+ later (do forget_it <- readIORef v_Keep_tmp_files
unless forget_it $ do
- verb <- readIORef verbose
+ verb <- dynFlag verbosity
cleanTempFiles verb
) $ do
-- exceptions will be blocked while we clean the temporary files,
-- install signal handlers
main_thread <- myThreadId
-
#ifndef mingw32_TARGET_OS
let sig_handler = Catch (throwTo main_thread
(DynException (toDyn Interrupted)))
installHandler sigINT sig_handler Nothing
#endif
- pgm <- getProgName
- writeIORef prog_name pgm
-
argv <- getArgs
-- grab any -B options from the command line first
argv' <- setTopDir argv
- top_dir <- readIORef topDir
+ top_dir <- readIORef v_TopDir
- let installed s = top_dir ++ s
+ let installed s = top_dir ++ '/':s
inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s
installed_pkgconfig = installed ("package.conf")
am_installed <- doesFileExist installed_pkgconfig
if am_installed
- then writeIORef path_package_config installed_pkgconfig
+ then writeIORef v_Path_package_config installed_pkgconfig
else do am_inplace <- doesFileExist inplace_pkgconfig
if am_inplace
- then writeIORef path_package_config inplace_pkgconfig
- else throwDyn (OtherError "can't find package.conf")
+ then writeIORef v_Path_package_config inplace_pkgconfig
+ else throwDyn (InstallationError
+ ("Can't find package.conf in " ++
+ inplace_pkgconfig))
-- set the location of our various files
if am_installed
- then do writeIORef path_usage (installed "ghc-usage.txt")
- writeIORef pgm_L (installed "unlit")
- writeIORef pgm_m (installed "ghc-asm")
- writeIORef pgm_s (installed "ghc-split")
+ 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 path_usage (inplace (cGHC_DRIVER_DIR ++ "/ghc-usage.txt"))
- writeIORef pgm_L (inplace cGHC_UNLIT)
- writeIORef pgm_m (inplace cGHC_MANGLER)
- writeIORef pgm_s (inplace cGHC_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 path_package_config
- contents <- readFile conf_file
- writeIORef package_details (read contents)
+ conf_file <- readIORef v_Path_package_config
+ r <- parsePkgConf conf_file
+ case r of {
+ Left err -> throwDyn (InstallationError (showSDoc err));
+ Right pkg_details -> do
+
+ 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
+ -- Show the GHCi banner?
+# ifdef GHCI
+ when (mode == DoInteractive) $
+ hPutStrLn stdout ghciWelcomeMsg
+# endif
+
-- 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
- _ <- processArgs static_flags more_opts []
-
+ -- -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) $
+ 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 = []
+ way_non_static <- processArgs static_flags (unreg_opts ++ way_opts) []
+
-- give the static flags to hsc
- build_hsc_opts
+ 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.
+ opt_level <- readIORef v_OptLevel
+
+
+ let lang = case mode of
+ StopBefore HCc -> HscC
+ DoInteractive -> HscInterpreted
+ _other | opt_level >= 1 -> HscC -- -O implies -fvia-C
+ | otherwise -> defaultHscLang
+
+ writeIORef v_DynFlags
+ defaultDynFlags{ 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,
+ }
-- the rest of the arguments are "dynamic"
- srcs <- processArgs dynamic_flags non_static []
+ srcs <- processArgs dynamic_flags (way_non_static ++ non_static) []
-- save the "initial DynFlags" away
- dyn_flags <- readIORef v_DynFlags
- writeIORef v_InitDynFlags dyn_flags
+ init_dyn_flags <- readIORef v_DynFlags
+ writeIORef v_InitDynFlags init_dyn_flags
-- complain about any unknown flags
- let unknown_flags = [ f | ('-':f) <- srcs ]
- mapM unknownFlagErr unknown_flags
+ mapM unknownFlagErr [ f | f@('-':_) <- srcs ]
+
+ verb <- dynFlag verbosity
- -- get the -v flag
- verb <- readIORef verbose
+ 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)
- when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version "
- hPutStr stderr version_str
- hPutStr stderr ", for Haskell 98, compiled by GHC version "
- hPutStrLn stderr booter_version)
+ when (verb >= 2)
+ (hPutStrLn stderr ("Using package config file: " ++ conf_file))
- when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file))
+ 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
- -- make is special
- when (mode == DoMake) beginMake
+ -- -ohi sanity checking
+ ohi <- readIORef v_Output_hi
+ if (isJust ohi &&
+ (mode == DoMake || mode == DoInteractive || length srcs > 1))
+ then throwDyn (UsageError "-ohi can only be used when compiling a single source file")
+ else do
- -- for each source file, find which phases to run
- pipelines <- mapM (genPipeline mode stop_flag) srcs
- let src_pipelines = zip srcs pipelines
+ -- make/interactive require invoking the compilation manager
+ if (mode == DoMake) then beginMake srcs else do
+ if (mode == DoInteractive) then beginInteractive srcs else do
- o_file <- readIORef output_file
- if isJust o_file && mode /= DoLink && length srcs > 1
- then throwDyn (UsageError "can't apply -o option to multiple source files")
+ -- -o sanity checking
+ o_file <- readIORef v_Output_file
+ if (length srcs > 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
- -- 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 driver_state
-
- let compileFile (src, phases) = do
- r <- runPipeline phases src (mode==DoLink) True
- writeIORef driver_state saved_driver_state
+ let compileFile src = do
+ writeIORef v_DynFlags init_dyn_flags
+
+ 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)
+ pp <- if not (haskellish_src_file src) || mode == StopBefore Hsc
+ then return src else do
+ phases <- genPipeline (StopBefore Hsc) stop_flag
+ False{-not persistent-} defaultHscLang src
+ pipeLoop phases src False{-no linking-} False{-no -o flag-}
+ basename suffix
+
+ -- rest of compilation
+ dyn_flags <- readIORef v_DynFlags
+ phases <- genPipeline mode stop_flag True (hscLang dyn_flags) pp
+ 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 topDir clibdir
- some -> writeIORef topDir (drop 2 (last some)))
+ [] -> throwDyn (InstallationError ("missing -B<dir> option"))
+ some -> writeIORef v_TopDir (drop 2 (last some)))
return others
-beginMake = panic "`ghc --make' unimplemented"
-
------------------------------------------------------------------------------
--- compatibility code
-
-#if __GLASGOW_HASKELL__ <= 408
-catchJust = catchIO
-ioErrors = justIoErrors
-throwTo = raiseInThread
-#endif
-
-#ifdef mingw32_TARGET_OS
-foreign import "_getpid" getProcessID :: IO Int
+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
+ cmLoadModule state mod
+ return ()
+ _ -> throwDyn (UsageError "only one module allowed with --make")
+
+
+beginInteractive :: [String] -> IO ()
+#ifndef GHCI
+beginInteractive = throwDyn (CmdLineError "not built for interactive use")
+#else
+beginInteractive fileish_args
+ = do minus_ls <- readIORef v_Cmdline_libraries
+
+ let (objs, mods) = partition objish_file fileish_args
+ libs = map Left objs ++ map Right minus_ls
+
+ state <- cmInit Interactive
+ case mods of
+ [] -> interactiveUI state Nothing libs
+ [mod] -> interactiveUI state (Just mod) libs
+ _ -> throwDyn (UsageError
+ "only one module allowed with --interactive")
#endif
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