{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.116 2002/12/18 16:29:30 simonmar Exp $
+-- $Id: Main.hs,v 1.120 2003/05/19 15:39:18 simonpj Exp $
--
-- GHC Driver program
--
#ifdef GHCI
-import InteractiveUI
-import DriverPhases( objish_file )
+import InteractiveUI( ghciWelcomeMsg, interactiveUI )
#endif
import HscTypes ( GhciMode(..) )
import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion )
import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles )
-import Packages ( showPackages, getPackageConfigMap )
-
+import Packages ( showPackages, getPackageConfigMap, basePackage,
+ haskell98Package
+ )
import DriverPipeline ( staticLink, doMkDLL, genPipeline, pipeLoop )
import DriverState ( buildCoreToDo, buildStgToDo,
findBuildTag,
dynamic_flags, processArgs, static_flags)
import DriverMkDepend ( beginMkDependHS, endMkDependHS )
-import DriverPhases ( Phase(HsPp, Hsc), haskellish_src_file, isSourceFile )
+import DriverPhases ( Phase(HsPp, Hsc), haskellish_src_file, objish_file, isSourceFile )
import DriverUtil ( add, handle, handleDyn, later, splitFilename,
unknownFlagsErr, getFileSuffix )
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) )
-#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
-
-- Standard Haskell libraries
import IO
import Directory ( doesFileExist )
-- 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
+ installSignalHandlers
argv <- getArgs
let (minusB_args, argv') = partition (prefixMatch "-B") argv
conf_file <- getPackageConfigPath
readPackageConf conf_file
- -- process all the other arguments, and get the source files
+ -- 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
verbosity = 1
})
- -- the rest of the arguments are "dynamic"
- srcs <- processArgs dynamic_flags (extra_non_static ++ non_static) []
+ -- The rest of the arguments are "dynamic"
+ -- Leftover ones are presumably files
+ fileish_args <- processArgs dynamic_flags (extra_non_static ++ non_static) []
+
+ -- We split out the object files (.o, .dll) and add them
+ -- to v_Ld_inputs for use by the linker
+ let (objs, srcs) = partition objish_file fileish_args
+ mapM_ (add v_Ld_inputs) objs
+
+ ---------------- Display banners and configuration -----------
+ showBanners mode conf_file static_opts
+
+ ---------------- Final sanity checking -----------
+ checkOptions mode srcs objs
+
+ ---------------- Do the business -----------
+ case mode of
+ DoMake -> doMake srcs
+ DoMkDependHS -> do { beginMkDependHS ;
+ compileFiles mode srcs;
+ endMkDependHS }
+ StopBefore p -> do { compileFiles mode srcs; return () }
+ DoMkDLL -> do { o_files <- compileFiles mode srcs;
+ doMkDLL o_files }
+ DoLink -> do { o_files <- compileFiles mode srcs;
+ omit_linking <- readIORef v_NoLink;
+ when (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.
+#ifndef GHCI
+ DoInteractive -> throwDyn (CmdLineError "not built for interactive use")
+#else
+ DoInteractive -> interactiveUI srcs
+#endif
+
+--------------------------------------------------------------------------------------
+checkOptions :: GhcMode -> [String] -> [String] -> IO ()
+ -- Final sanity checking before kicking of a compilation (pipeline).
+checkOptions mode srcs objs = do
+ -- -ohi sanity check
+ 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
+
+ -- -o sanity checking
+ o_file <- readIORef v_Output_file
+ if (srcs `lengthExceeds` 1 && isJust o_file && mode /= DoLink && mode /= DoMkDLL)
+ then throwDyn (UsageError "can't apply -o to multiple source files")
+ else do
+
+ -- Check that there are some input files (except in the interactive case)
+ if null srcs && null objs && mode /= DoInteractive
+ then throwDyn (UsageError "no input files")
+ else 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
+
- -- save the "initial DynFlags" away
+--------------------------------------------------------------------------------------
+compileFiles :: GhcMode
+ -> [String] -- Source files
+ -> IO [String] -- Object files
+compileFiles mode srcs = do
+ stop_flag <- readIORef v_GhcModeFlag
+
+ -- Do the business; save the DynFlags at the
+ -- start, so we can restore them before each file
saveDynFlags
+ mapM (compileFile mode stop_flag) srcs
- -- perform some checks of the options set / report unknowns.
- checkOptions srcs
+
+compileFile mode stop_flag 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
+
+
+--------------------------------------------------------------------------------------
+doMake :: [String] -> IO ()
+doMake [] = throwDyn (UsageError "no input files")
+doMake srcs = do
+ dflags <- getDynFlags
+ state <- cmInit Batch
+ graph <- cmDepAnal state dflags srcs
+ (_, ok_flag, _) <- cmLoadModules state dflags graph
+ when (failed ok_flag) (exitWith (ExitFailure 1))
+ return ()
+
+
+
+--------------------------------------------------------------------------------------
+showBanners :: GhcMode -> FilePath -> [String] -> IO ()
+showBanners mode conf_file static_opts = do
verb <- dynFlag verbosity
-- Show the GHCi banner
when (verb >= 3)
(hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts))
-
- -- 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
-
- -- -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)
- 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.
-
- when (mode == DoMkDLL) (doMkDLL o_files)
-
-
-
-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
-
-
-beginInteractive :: [String] -> IO ()
-#ifndef GHCI
-beginInteractive = throwDyn (CmdLineError "not built for interactive use")
-#else
-beginInteractive fileish_args
- = do state <- cmInit Interactive
-
- let (objs, mods) = partition objish_file fileish_args
-
- interactiveUI state mods objs
-#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).
-