1 {-# OPTIONS -fno-cse #-}
2 -- -fno-cse is needed for GLOBAL_VAR's to behave properly
4 -----------------------------------------------------------------------------
8 -- (c) The University of Glasgow 2005
10 -----------------------------------------------------------------------------
12 module DriverPipeline (
13 -- Run a series of compilation steps in a pipeline, for a
14 -- collection of source files.
17 -- Interfaces for the batch-mode driver
20 -- Interfaces for the compilation manager (interpreted/batch-mode)
27 #include "HsVersions.h"
38 import LazyUniqFM ( eltsUFM )
41 import StaticFlags ( v_Ld_inputs, opt_Static, WayName(..) )
45 import StringBuffer ( hGetStringBuffer )
46 import BasicTypes ( SuccessFlag(..) )
47 import Maybes ( expectJust )
48 import ParserCoreUtils ( getCoreModuleName )
55 import Data.IORef ( readIORef )
56 -- import GHC.Exts ( Int(..) )
57 import System.Directory
58 import System.FilePath
60 import System.IO.Error as IO
62 import Data.List ( isSuffixOf )
64 import System.Environment
66 -- ---------------------------------------------------------------------------
69 -- | Just preprocess a file, put the result in a temp. file (used by the
70 -- compilation manager during the summary phase).
72 -- We return the augmented DynFlags, because they contain the result
73 -- of slurping in the OPTIONS pragmas
75 preprocess :: GhcMonad m =>
77 -> (FilePath, Maybe Phase) -- ^ filename and starting phase
78 -> m (DynFlags, FilePath)
79 preprocess hsc_env (filename, mb_phase) =
80 ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
81 runPipeline anyHsc hsc_env (filename, mb_phase)
82 Nothing Temporary Nothing{-no ModLocation-}
84 -- ---------------------------------------------------------------------------
88 -- Compile a single module, under the control of the compilation manager.
90 -- This is the interface between the compilation manager and the
91 -- compiler proper (hsc), where we deal with tedious details like
92 -- reading the OPTIONS pragma from the source file, and passing the
93 -- output of hsc through the C compiler.
95 -- NB. No old interface can also mean that the source has changed.
97 compile :: GhcMonad m =>
99 -> ModSummary -- ^ summary for module being compiled
100 -> Int -- ^ module N ...
102 -> Maybe ModIface -- ^ old interface, if we have one
103 -> Maybe Linkable -- ^ old linkable, if we have one
104 -> m HomeModInfo -- ^ the complete HomeModInfo, if successful
106 compile = compile' (hscCompileNothing, hscCompileInteractive, hscCompileBatch)
108 type Compiler m a = HscEnv -> ModSummary -> Bool
109 -> Maybe ModIface -> Maybe (Int, Int)
112 compile' :: GhcMonad m =>
113 (Compiler m (HscStatus, ModIface, ModDetails),
114 Compiler m (InteractiveStatus, ModIface, ModDetails),
115 Compiler m (HscStatus, ModIface, ModDetails))
117 -> ModSummary -- ^ summary for module being compiled
118 -> Int -- ^ module N ...
120 -> Maybe ModIface -- ^ old interface, if we have one
121 -> Maybe Linkable -- ^ old linkable, if we have one
122 -> m HomeModInfo -- ^ the complete HomeModInfo, if successful
124 compile' (nothingCompiler, interactiveCompiler, batchCompiler)
125 hsc_env0 summary mod_index nmods mb_old_iface maybe_old_linkable
127 let dflags0 = ms_hspp_opts summary
128 this_mod = ms_mod summary
129 src_flavour = ms_hsc_src summary
130 location = ms_location summary
131 input_fn = expectJust "compile:hs" (ml_hs_file location)
132 input_fnpp = ms_hspp_file summary
134 liftIO $ debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
136 let basename = dropExtension input_fn
138 -- We add the directory in which the .hs files resides) to the import path.
139 -- This is needed when we try to compile the .hc file later, if it
140 -- imports a _stub.h file that we created here.
141 let current_dir = case takeDirectory basename of
142 "" -> "." -- XXX Hack
144 old_paths = includePaths dflags0
145 dflags = dflags0 { includePaths = current_dir : old_paths }
146 hsc_env = hsc_env0 {hsc_dflags = dflags}
148 -- Figure out what lang we're generating
149 let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
150 -- ... and what the next phase should be
151 let next_phase = hscNextPhase dflags src_flavour hsc_lang
152 -- ... and what file to generate the output into
153 output_fn <- liftIO $ getOutputFilename next_phase
154 Temporary basename dflags next_phase (Just location)
156 let dflags' = dflags { hscTarget = hsc_lang,
157 hscOutName = output_fn,
158 extCoreName = basename ++ ".hcr" }
159 let hsc_env' = hsc_env { hsc_dflags = dflags' }
161 -- -fforce-recomp should also work with --make
162 let force_recomp = dopt Opt_ForceRecomp dflags
163 source_unchanged = isJust maybe_old_linkable && not force_recomp
164 object_filename = ml_obj_file location
166 let getStubLinkable False = return []
168 = do stub_o <- compileStub hsc_env' this_mod location
169 return [ DotO stub_o ]
171 handleBatch HscNoRecomp
172 = ASSERT (isJust maybe_old_linkable)
173 return maybe_old_linkable
175 handleBatch (HscRecomp hasStub _)
176 | isHsBoot src_flavour
177 = do when (isObjectTarget hsc_lang) $ -- interpreted reaches here too
178 liftIO $ SysTools.touch dflags' "Touching object file"
180 return maybe_old_linkable
183 = do stub_unlinked <- getStubLinkable hasStub
184 (hs_unlinked, unlinked_time) <-
187 -> return ([], ms_hs_date summary)
188 -- We're in --make mode: finish the compilation pipeline.
190 -> do _ <- runPipeline StopLn hsc_env' (output_fn,Nothing)
194 -- The object filename comes from the ModLocation
195 o_time <- liftIO $ getModificationTime object_filename
196 return ([DotO object_filename], o_time)
197 let linkable = LM unlinked_time this_mod
198 (hs_unlinked ++ stub_unlinked)
199 return (Just linkable)
201 handleInterpreted HscNoRecomp
202 = ASSERT (isJust maybe_old_linkable)
203 return maybe_old_linkable
204 handleInterpreted (HscRecomp _hasStub Nothing)
205 = ASSERT (isHsBoot src_flavour)
206 return maybe_old_linkable
207 handleInterpreted (HscRecomp hasStub (Just (comp_bc, modBreaks)))
208 = do stub_unlinked <- getStubLinkable hasStub
209 let hs_unlinked = [BCOs comp_bc modBreaks]
210 unlinked_time = ms_hs_date summary
211 -- Why do we use the timestamp of the source file here,
212 -- rather than the current time? This works better in
213 -- the case where the local clock is out of sync
214 -- with the filesystem's clock. It's just as accurate:
215 -- if the source is modified, then the linkable will
217 let linkable = LM unlinked_time this_mod
218 (hs_unlinked ++ stub_unlinked)
219 return (Just linkable)
221 let -- runCompiler :: Compiler result -> (result -> Maybe Linkable)
223 runCompiler compiler handle
224 = do (result, iface, details)
225 <- compiler hsc_env' summary source_unchanged mb_old_iface
226 (Just (mod_index, nmods))
227 linkable <- handle result
228 return (HomeModInfo{ hm_details = details,
230 hm_linkable = linkable })
234 runCompiler interactiveCompiler handleInterpreted
236 runCompiler nothingCompiler handleBatch
238 runCompiler batchCompiler handleBatch
241 -----------------------------------------------------------------------------
242 -- stub .h and .c files (for foreign export support)
244 -- The _stub.c file is derived from the haskell source file, possibly taking
245 -- into account the -stubdir option.
247 -- Consequently, we derive the _stub.o filename from the haskell object
250 -- This isn't necessarily the same as the object filename we
251 -- would get if we just compiled the _stub.c file using the pipeline.
254 -- ghc src/A.hs -odir obj
256 -- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
257 -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
260 compileStub :: GhcMonad m => HscEnv -> Module -> ModLocation
262 compileStub hsc_env mod location = do
263 -- compile the _stub.c file w/ gcc
264 let (stub_c,_,stub_o) = mkStubPaths (hsc_dflags hsc_env)
265 (moduleName mod) location
267 _ <- runPipeline StopLn hsc_env (stub_c,Nothing) Nothing
268 (SpecificFile stub_o) Nothing{-no ModLocation-}
273 -- ---------------------------------------------------------------------------
276 link :: GhcLink -- interactive or batch
277 -> DynFlags -- dynamic flags
278 -> Bool -- attempt linking in batch mode?
279 -> HomePackageTable -- what to link
282 -- For the moment, in the batch linker, we don't bother to tell doLink
283 -- which packages to link -- it just tries all that are available.
284 -- batch_attempt_linking should only be *looked at* in batch mode. It
285 -- should only be True if the upsweep was successful and someone
286 -- exports main, i.e., we have good reason to believe that linking
290 link LinkInMemory _ _ _
291 = do -- Not Linking...(demand linker will do the job)
298 link LinkBinary dflags batch_attempt_linking hpt
299 = link' dflags batch_attempt_linking hpt
301 link LinkDynLib dflags batch_attempt_linking hpt
302 = link' dflags batch_attempt_linking hpt
305 -- warning suppression
306 link other _ _ _ = panicBadLink other
309 panicBadLink :: GhcLink -> a
310 panicBadLink other = panic ("link: GHC not built to link this way: " ++
313 link' :: DynFlags -- dynamic flags
314 -> Bool -- attempt linking in batch mode?
315 -> HomePackageTable -- what to link
318 link' dflags batch_attempt_linking hpt
319 | batch_attempt_linking
322 home_mod_infos = eltsUFM hpt
324 -- the packages we depend on
325 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
327 -- the linkables to link
328 linkables = map (expectJust "link".hm_linkable) home_mod_infos
330 debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
332 -- check for the -no-link flag
333 if isNoLink (ghcLink dflags)
334 then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
338 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
339 obj_files = concatMap getOfiles linkables
341 exe_file = exeFileName dflags
343 linking_needed <- linkingNeeded dflags linkables pkg_deps
345 if not (dopt Opt_ForceRecomp dflags) && not linking_needed
346 then do debugTraceMsg dflags 2 (text exe_file <+> ptext (sLit "is up to date, linking not required."))
350 debugTraceMsg dflags 1 (ptext (sLit "Linking") <+> text exe_file
353 -- Don't showPass in Batch mode; doLink will do that for us.
354 let link = case ghcLink dflags of
355 LinkBinary -> linkBinary
356 LinkDynLib -> linkDynLib
357 other -> panicBadLink other
358 link dflags obj_files pkg_deps
360 debugTraceMsg dflags 3 (text "link: done")
362 -- linkBinary only returns if it succeeds
366 = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
367 text " Main.main not exported; not linking.")
371 linkingNeeded :: DynFlags -> [Linkable] -> [PackageId] -> IO Bool
372 linkingNeeded dflags linkables pkg_deps = do
373 -- if the modification time on the executable is later than the
374 -- modification times on all of the objects and libraries, then omit
375 -- linking (unless the -fforce-recomp flag was given).
376 let exe_file = exeFileName dflags
377 e_exe_time <- IO.try $ getModificationTime exe_file
379 Left _ -> return True
381 -- first check object files and extra_ld_inputs
382 extra_ld_inputs <- readIORef v_Ld_inputs
383 e_extra_times <- mapM (IO.try . getModificationTime) extra_ld_inputs
384 let (errs,extra_times) = splitEithers e_extra_times
385 let obj_times = map linkableTime linkables ++ extra_times
386 if not (null errs) || any (t <) obj_times
390 -- next, check libraries. XXX this only checks Haskell libraries,
391 -- not extra_libraries or -l things from the command line.
392 let pkg_map = pkgIdMap (pkgState dflags)
393 pkg_hslibs = [ (libraryDirs c, lib)
394 | Just c <- map (lookupPackage pkg_map) pkg_deps,
395 lib <- packageHsLibs dflags c ]
397 pkg_libfiles <- mapM (uncurry findHSLib) pkg_hslibs
398 if any isNothing pkg_libfiles then return True else do
399 e_lib_times <- mapM (IO.try . getModificationTime)
400 (catMaybes pkg_libfiles)
401 let (lib_errs,lib_times) = splitEithers e_lib_times
402 if not (null lib_errs) || any (t <) lib_times
406 findHSLib :: [String] -> String -> IO (Maybe FilePath)
407 findHSLib dirs lib = do
408 let batch_lib_file = "lib" ++ lib <.> "a"
409 found <- filterM doesFileExist (map (</> batch_lib_file) dirs)
412 (x:_) -> return (Just x)
414 -- -----------------------------------------------------------------------------
415 -- Compile files in one-shot mode.
417 oneShot :: GhcMonad m =>
418 HscEnv -> Phase -> [(String, Maybe Phase)] -> m ()
419 oneShot hsc_env stop_phase srcs = do
420 o_files <- mapM (compileFile hsc_env stop_phase) srcs
421 liftIO $ doLink (hsc_dflags hsc_env) stop_phase o_files
423 compileFile :: GhcMonad m =>
424 HscEnv -> Phase -> (FilePath, Maybe Phase) -> m FilePath
425 compileFile hsc_env stop_phase (src, mb_phase) = do
426 exists <- liftIO $ doesFileExist src
428 ghcError (CmdLineError ("does not exist: " ++ src))
431 dflags = hsc_dflags hsc_env
432 split = dopt Opt_SplitObjs dflags
433 mb_o_file = outputFile dflags
434 ghc_link = ghcLink dflags -- Set by -c or -no-link
436 -- When linking, the -o argument refers to the linker's output.
437 -- otherwise, we use it as the name for the pipeline's output.
439 | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent
440 -- -o foo applies to linker
441 | Just o_file <- mb_o_file = SpecificFile o_file
442 -- -o foo applies to the file we are compiling now
443 | otherwise = Persistent
445 stop_phase' = case stop_phase of
446 As | split -> SplitAs
449 ( _, out_file) <- runPipeline stop_phase' hsc_env
450 (src, mb_phase) Nothing output
451 Nothing{-no ModLocation-}
455 doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
456 doLink dflags stop_phase o_files
457 | not (isStopLn stop_phase)
458 = return () -- We stopped before the linking phase
461 = case ghcLink dflags of
463 LinkBinary -> linkBinary dflags o_files link_pkgs
464 LinkDynLib -> linkDynLib dflags o_files []
465 other -> panicBadLink other
467 -- Always link in the haskell98 package for static linking. Other
468 -- packages have to be specified via the -package flag.
470 | dopt Opt_AutoLinkPackages dflags = [haskell98PackageId]
474 -- ---------------------------------------------------------------------------
478 -- ^ Output should be to a temporary file: we're going to
479 -- run more compilation steps on this output later.
481 -- ^ We want a persistent file, i.e. a file in the current directory
482 -- derived from the input filename, but with the appropriate extension.
483 -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
484 | SpecificFile FilePath
485 -- ^ The output must go into the specified file.
487 -- | Run a compilation pipeline, consisting of multiple phases.
489 -- This is the interface to the compilation pipeline, which runs
490 -- a series of compilation steps on a single source file, specifying
491 -- at which stage to stop.
493 -- The DynFlags can be modified by phases in the pipeline (eg. by
494 -- OPTIONS_GHC pragmas), and the changes affect later phases in the
498 Phase -- ^ When to stop
499 -> HscEnv -- ^ Compilation environment
500 -> (FilePath,Maybe Phase) -- ^ Input filename (and maybe -x suffix)
501 -> Maybe FilePath -- ^ original basename (if different from ^^^)
502 -> PipelineOutput -- ^ Output filename
503 -> Maybe ModLocation -- ^ A ModLocation, if this is a Haskell module
504 -> m (DynFlags, FilePath) -- ^ (final flags, output filename)
506 runPipeline stop_phase hsc_env0 (input_fn, mb_phase) mb_basename output maybe_loc
508 let dflags0 = hsc_dflags hsc_env0
509 (input_basename, suffix) = splitExtension input_fn
510 suffix' = drop 1 suffix -- strip off the .
511 basename | Just b <- mb_basename = b
512 | otherwise = input_basename
514 -- Decide where dump files should go based on the pipeline output
515 dflags = dflags0 { dumpPrefix = Just (basename ++ ".") }
516 hsc_env = hsc_env0 {hsc_dflags = dflags}
518 -- If we were given a -x flag, then use that phase to start from
519 start_phase = fromMaybe (startPhase suffix') mb_phase
521 -- We want to catch cases of "you can't get there from here" before
522 -- we start the pipeline, because otherwise it will just run off the
525 -- There is a partial ordering on phases, where A < B iff A occurs
526 -- before B in a normal compilation pipeline.
528 when (not (start_phase `happensBefore` stop_phase)) $
530 ("cannot compile this file to desired target: "
533 -- this is a function which will be used to calculate output file names
534 -- as we go along (we partially apply it to some of its inputs here)
535 let get_output_fn = getOutputFilename stop_phase output basename
537 -- Execute the pipeline...
538 (dflags', output_fn, maybe_loc) <-
539 pipeLoop hsc_env start_phase stop_phase input_fn
540 basename suffix' get_output_fn maybe_loc
542 -- Sometimes, a compilation phase doesn't actually generate any output
543 -- (eg. the CPP phase when -fcpp is not turned on). If we end on this
544 -- stage, but we wanted to keep the output, then we have to explicitly
545 -- copy the file, remembering to prepend a {-# LINE #-} pragma so that
546 -- further compilation stages can tell what the original filename was.
549 return (dflags', output_fn)
551 do final_fn <- get_output_fn dflags' stop_phase maybe_loc
552 when (final_fn /= output_fn) $ do
553 let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
554 line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
555 copyWithHeader dflags msg line_prag output_fn final_fn
556 return (dflags', final_fn)
560 pipeLoop :: GhcMonad m =>
561 HscEnv -> Phase -> Phase
562 -> FilePath -> String -> Suffix
563 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
565 -> m (DynFlags, FilePath, Maybe ModLocation)
567 pipeLoop hsc_env phase stop_phase
568 input_fn orig_basename orig_suff
569 orig_get_output_fn maybe_loc
571 | phase `eqPhase` stop_phase -- All done
572 = return (hsc_dflags hsc_env, input_fn, maybe_loc)
574 | not (phase `happensBefore` stop_phase)
575 -- Something has gone wrong. We'll try to cover all the cases when
576 -- this could happen, so if we reach here it is a panic.
577 -- eg. it might happen if the -C flag is used on a source file that
578 -- has {-# OPTIONS -fasm #-}.
579 = panic ("pipeLoop: at phase " ++ show phase ++
580 " but I wanted to stop at phase " ++ show stop_phase)
583 = do (next_phase, dflags', maybe_loc, output_fn)
584 <- runPhase phase stop_phase hsc_env orig_basename
585 orig_suff input_fn orig_get_output_fn maybe_loc
586 let hsc_env' = hsc_env {hsc_dflags = dflags'}
587 pipeLoop hsc_env' next_phase stop_phase output_fn
588 orig_basename orig_suff orig_get_output_fn maybe_loc
591 :: Phase -> PipelineOutput -> String
592 -> DynFlags -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
593 getOutputFilename stop_phase output basename
596 func dflags next_phase maybe_location
597 | is_last_phase, Persistent <- output = persistent_fn
598 | is_last_phase, SpecificFile f <- output = return f
599 | keep_this_output = persistent_fn
600 | otherwise = newTempName dflags suffix
603 odir = objectDir dflags
604 osuf = objectSuf dflags
605 keep_hc = dopt Opt_KeepHcFiles dflags
606 keep_raw_s = dopt Opt_KeepRawSFiles dflags
607 keep_s = dopt Opt_KeepSFiles dflags
609 myPhaseInputExt HCc = hcsuf
610 myPhaseInputExt StopLn = osuf
611 myPhaseInputExt other = phaseInputExt other
613 is_last_phase = next_phase `eqPhase` stop_phase
615 -- sometimes, we keep output from intermediate stages
619 Mangle | keep_raw_s -> True
621 HCc | keep_hc -> True
624 suffix = myPhaseInputExt next_phase
626 -- persistent object files get put in odir
628 | StopLn <- next_phase = return odir_persistent
629 | otherwise = return persistent
631 persistent = basename <.> suffix
634 | Just loc <- maybe_location = ml_obj_file loc
635 | Just d <- odir = d </> persistent
636 | otherwise = persistent
639 -- -----------------------------------------------------------------------------
640 -- | Each phase in the pipeline returns the next phase to execute, and the
641 -- name of the file in which the output was placed.
643 -- We must do things dynamically this way, because we often don't know
644 -- what the rest of the phases will be until part-way through the
645 -- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
646 -- of a source file can change the latter stages of the pipeline from
647 -- taking the via-C route to using the native code generator.
649 runPhase :: GhcMonad m =>
650 Phase -- ^ Do this phase first
651 -> Phase -- ^ Stop just before this phase
653 -> String -- ^ basename of original input source
654 -> String -- ^ its extension
655 -> FilePath -- ^ name of file which contains the input to this phase.
656 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
657 -- ^ how to calculate the output filename
658 -> Maybe ModLocation -- ^ the ModLocation, if we have one
659 -> m (Phase, -- next phase
660 DynFlags, -- new dynamic flags
661 Maybe ModLocation, -- the ModLocation, if we have one
662 FilePath) -- output filename
664 -- Invariant: the output filename always contains the output
665 -- Interesting case: Hsc when there is no recompilation to do
666 -- Then the output filename is still a .o file
668 -------------------------------------------------------------------------------
671 runPhase (Unlit sf) _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
673 let dflags = hsc_dflags hsc_env
674 output_fn <- liftIO $ get_output_fn dflags (Cpp sf) maybe_loc
676 let unlit_flags = getOpts dflags opt_L
677 flags = map SysTools.Option unlit_flags ++
678 [ -- The -h option passes the file name for unlit to
679 -- put in a #line directive
681 -- cpp interprets \b etc as escape sequences,
682 -- so we use / for filenames in pragmas
683 , SysTools.Option $ reslash Forwards $ normalise input_fn
684 , SysTools.FileOption "" input_fn
685 , SysTools.FileOption "" output_fn
688 liftIO $ SysTools.runUnlit dflags flags
690 return (Cpp sf, dflags, maybe_loc, output_fn)
692 -------------------------------------------------------------------------------
693 -- Cpp phase : (a) gets OPTIONS out of file
694 -- (b) runs cpp if necessary
696 runPhase (Cpp sf) _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
697 = do let dflags0 = hsc_dflags hsc_env
698 src_opts <- liftIO $ getOptionsFromFile dflags0 input_fn
699 (dflags, unhandled_flags, warns)
700 <- liftIO $ parseDynamicNoPackageFlags dflags0 src_opts
701 handleFlagWarnings dflags warns
702 checkProcessArgsResult unhandled_flags
704 if not (dopt Opt_Cpp dflags) then
705 -- no need to preprocess CPP, just pass input file along
706 -- to the next phase of the pipeline.
707 return (HsPp sf, dflags, maybe_loc, input_fn)
709 output_fn <- liftIO $ get_output_fn dflags (HsPp sf) maybe_loc
710 liftIO $ doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
711 return (HsPp sf, dflags, maybe_loc, output_fn)
713 -------------------------------------------------------------------------------
716 runPhase (HsPp sf) _stop hsc_env basename suff input_fn get_output_fn maybe_loc
717 = do let dflags = hsc_dflags hsc_env
718 if not (dopt Opt_Pp dflags) then
719 -- no need to preprocess, just pass input file along
720 -- to the next phase of the pipeline.
721 return (Hsc sf, dflags, maybe_loc, input_fn)
723 let hspp_opts = getOpts dflags opt_F
724 let orig_fn = basename <.> suff
725 output_fn <- liftIO $ get_output_fn dflags (Hsc sf) maybe_loc
726 liftIO $ SysTools.runPp dflags
727 ( [ SysTools.Option orig_fn
728 , SysTools.Option input_fn
729 , SysTools.FileOption "" output_fn
731 map SysTools.Option hspp_opts
733 return (Hsc sf, dflags, maybe_loc, output_fn)
735 -----------------------------------------------------------------------------
738 -- Compilation of a single module, in "legacy" mode (_not_ under
739 -- the direction of the compilation manager).
740 runPhase (Hsc src_flavour) stop hsc_env basename suff input_fn get_output_fn _maybe_loc
741 = do -- normal Hsc mode, not mkdependHS
742 let dflags0 = hsc_dflags hsc_env
744 -- we add the current directory (i.e. the directory in which
745 -- the .hs files resides) to the include path, since this is
746 -- what gcc does, and it's probably what you want.
747 let current_dir = case takeDirectory basename of
748 "" -> "." -- XXX Hack
751 paths = includePaths dflags0
752 dflags = dflags0 { includePaths = current_dir : paths }
754 -- gather the imports and module name
755 (hspp_buf,mod_name,imps,src_imps) <-
757 ExtCoreFile -> do -- no explicit imports in ExtCore input.
758 m <- liftIO $ getCoreModuleName input_fn
759 return (Nothing, mkModuleName m, [], [])
762 buf <- liftIO $ hGetStringBuffer input_fn
763 (src_imps,imps,L _ mod_name) <- getImports dflags buf input_fn (basename <.> suff)
764 return (Just buf, mod_name, imps, src_imps)
766 -- Build a ModLocation to pass to hscMain.
767 -- The source filename is rather irrelevant by now, but it's used
768 -- by hscMain for messages. hscMain also needs
769 -- the .hi and .o filenames, and this is as good a way
770 -- as any to generate them, and better than most. (e.g. takes
771 -- into accout the -osuf flags)
772 location1 <- liftIO $ mkHomeModLocation2 dflags mod_name basename suff
774 -- Boot-ify it if necessary
775 let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
776 | otherwise = location1
779 -- Take -ohi into account if present
780 -- This can't be done in mkHomeModuleLocation because
781 -- it only applies to the module being compiles
782 let ohi = outputHi dflags
783 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
784 | otherwise = location2
786 -- Take -o into account if present
787 -- Very like -ohi, but we must *only* do this if we aren't linking
788 -- (If we're linking then the -o applies to the linked thing, not to
789 -- the object file for one module.)
790 -- Note the nasty duplication with the same computation in compileFile above
791 let expl_o_file = outputFile dflags
792 location4 | Just ofile <- expl_o_file
793 , isNoLink (ghcLink dflags)
794 = location3 { ml_obj_file = ofile }
795 | otherwise = location3
797 o_file = ml_obj_file location4 -- The real object file
800 -- Figure out if the source has changed, for recompilation avoidance.
802 -- Setting source_unchanged to True means that M.o seems
803 -- to be up to date wrt M.hs; so no need to recompile unless imports have
804 -- changed (which the compiler itself figures out).
805 -- Setting source_unchanged to False tells the compiler that M.o is out of
806 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
807 src_timestamp <- liftIO $ getModificationTime (basename <.> suff)
809 let force_recomp = dopt Opt_ForceRecomp dflags
811 if force_recomp || not (isStopLn stop)
812 -- Set source_unchanged to False unconditionally if
813 -- (a) recompilation checker is off, or
814 -- (b) we aren't going all the way to .o file (e.g. ghc -S)
816 -- Otherwise look at file modification dates
817 else do o_file_exists <- liftIO $ doesFileExist o_file
819 then return False -- Need to recompile
820 else do t2 <- liftIO $ getModificationTime o_file
821 if t2 > src_timestamp
826 let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
827 let next_phase = hscNextPhase dflags src_flavour hsc_lang
828 output_fn <- liftIO $ get_output_fn dflags next_phase (Just location4)
830 let dflags' = dflags { hscTarget = hsc_lang,
831 hscOutName = output_fn,
832 extCoreName = basename ++ ".hcr" }
834 let hsc_env' = hsc_env {hsc_dflags = dflags'}
836 -- Tell the finder cache about this module
837 mod <- liftIO $ addHomeModuleToFinder hsc_env' mod_name location4
839 -- Make the ModSummary to hand to hscMain
841 mod_summary = ModSummary { ms_mod = mod,
842 ms_hsc_src = src_flavour,
843 ms_hspp_file = input_fn,
844 ms_hspp_opts = dflags,
845 ms_hspp_buf = hspp_buf,
846 ms_location = location4,
847 ms_hs_date = src_timestamp,
848 ms_obj_date = Nothing,
850 ms_srcimps = src_imps }
853 result <- hscCompileOneShot hsc_env'
854 mod_summary source_unchanged
856 Nothing -- No "module i of n" progress info
860 -> do liftIO $ SysTools.touch dflags' "Touching object file" o_file
861 -- The .o file must have a later modification date
862 -- than the source file (else we wouldn't be in HscNoRecomp)
863 -- but we touch it anyway, to keep 'make' happy (we think).
864 return (StopLn, dflags', Just location4, o_file)
865 (HscRecomp hasStub _)
867 do stub_o <- compileStub hsc_env' mod location4
868 liftIO $ consIORef v_Ld_inputs stub_o
869 -- In the case of hs-boot files, generate a dummy .o-boot
870 -- stamp file for the benefit of Make
871 when (isHsBoot src_flavour) $
872 liftIO $ SysTools.touch dflags' "Touching object file" o_file
873 return (next_phase, dflags', Just location4, output_fn)
875 -----------------------------------------------------------------------------
878 runPhase CmmCpp _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
880 let dflags = hsc_dflags hsc_env
881 output_fn <- liftIO $ get_output_fn dflags Cmm maybe_loc
882 liftIO $ doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
883 return (Cmm, dflags, maybe_loc, output_fn)
885 runPhase Cmm stop hsc_env basename _ input_fn get_output_fn maybe_loc
887 let dflags = hsc_dflags hsc_env
888 let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
889 let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
890 output_fn <- liftIO $ get_output_fn dflags next_phase maybe_loc
892 let dflags' = dflags { hscTarget = hsc_lang,
893 hscOutName = output_fn,
894 extCoreName = basename ++ ".hcr" }
895 let hsc_env' = hsc_env {hsc_dflags = dflags'}
897 hscCmmFile hsc_env' input_fn
899 -- XXX: catch errors above and convert them into ghcError? Original
902 --when (not ok) $ ghcError (PhaseFailed "cmm" (ExitFailure 1))
904 return (next_phase, dflags, maybe_loc, output_fn)
906 -----------------------------------------------------------------------------
909 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
910 -- way too many hacks, and I can't say I've ever used it anyway.
912 runPhase cc_phase _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
913 | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc
914 = do let dflags = hsc_dflags hsc_env
915 let cc_opts = getOpts dflags opt_c
916 hcc = cc_phase `eqPhase` HCc
918 let cmdline_include_paths = includePaths dflags
920 -- HC files have the dependent packages stamped into them
921 pkgs <- if hcc then liftIO (getHCFilePackages input_fn) else return []
923 -- add package include paths even if we're just compiling .c
924 -- files; this is the Value Add(TM) that using ghc instead of
926 pkg_include_dirs <- liftIO $ getPackageIncludePath dflags pkgs
927 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
928 (cmdline_include_paths ++ pkg_include_dirs)
930 let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
931 gcc_extra_viac_flags <- liftIO $ getExtraViaCOpts dflags
932 let pic_c_flags = picCCOpts dflags
934 let verb = getVerbFlag dflags
936 -- cc-options are not passed when compiling .hc files. Our
937 -- hc code doesn't not #include any header files anyway, so these
938 -- options aren't necessary.
940 if cc_phase `eqPhase` HCc
942 else liftIO $ getPackageExtraCcOpts dflags pkgs
944 #ifdef darwin_TARGET_OS
945 pkg_framework_paths <- liftIO $ getPackageFrameworkPath dflags pkgs
946 let cmdline_framework_paths = frameworkPaths dflags
947 let framework_paths = map ("-F"++)
948 (cmdline_framework_paths ++ pkg_framework_paths)
951 let split_objs = dopt Opt_SplitObjs dflags
952 split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
955 let cc_opt | optLevel dflags >= 2 = "-O2"
960 let mangle = dopt Opt_DoAsmMangling dflags
962 | hcc && mangle = Mangle
964 output_fn <- liftIO $ get_output_fn dflags next_phase maybe_loc
969 -- on x86 the floating point regs have greater precision
970 -- than a double, which leads to unpredictable results.
971 -- By default, we turn this off with -ffloat-store unless
972 -- the user specified -fexcess-precision.
973 (if dopt Opt_ExcessPrecision dflags
975 else [ "-ffloat-store" ]) ++
978 -- gcc's -fstrict-aliasing allows two accesses to memory
979 -- to be considered non-aliasing if they have different types.
980 -- This interacts badly with the C code we generate, which is
981 -- very weakly typed, being derived from C--.
982 ["-fno-strict-aliasing"]
984 liftIO $ SysTools.runCc dflags (
985 -- force the C compiler to interpret this file as C when
986 -- compiling .hc files, by adding the -x c option.
987 -- Also useful for plain .c files, just in case GHC saw a
989 [ SysTools.Option "-x", if cc_phase `eqPhase` Ccpp
990 then SysTools.Option "c++"
991 else SysTools.Option "c"] ++
992 [ SysTools.FileOption "" input_fn
993 , SysTools.Option "-o"
994 , SysTools.FileOption "" output_fn
996 ++ map SysTools.Option (
1000 #if defined(mingw32_TARGET_OS)
1001 -- Stub files generated for foreign exports references the runIO_closure
1002 -- and runNonIO_closure symbols, which are defined in the base package.
1003 -- These symbols are imported into the stub.c file via RtsAPI.h, and the
1004 -- way we do the import depends on whether we're currently compiling
1005 -- the base package or not.
1006 ++ (if thisPackage dflags == basePackageId
1007 then [ "-DCOMPILING_BASE_PACKAGE" ]
1011 #ifdef sparc_TARGET_ARCH
1012 -- We only support SparcV9 and better because V8 lacks an atomic CAS
1013 -- instruction. Note that the user can still override this
1014 -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
1015 -- regardless of the ordering.
1017 -- This is a temporary hack.
1020 ++ (if hcc && mangle
1021 then md_regd_c_flags
1025 then gcc_extra_viac_flags
1026 else filter (=="-fwrapv")
1027 gcc_extra_viac_flags
1028 -- still want -fwrapv even for unreg'd
1033 ++ [ verb, "-S", "-Wimplicit", cc_opt ]
1034 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
1035 #ifdef darwin_TARGET_OS
1041 ++ pkg_extra_cc_opts
1044 return (next_phase, dflags, maybe_loc, output_fn)
1046 -- ToDo: postprocess the output from gcc
1048 -----------------------------------------------------------------------------
1051 runPhase Mangle _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
1052 = do let dflags = hsc_dflags hsc_env
1053 let mangler_opts = getOpts dflags opt_m
1055 #if i386_TARGET_ARCH
1056 machdep_opts <- return [ show (stolen_x86_regs dflags) ]
1058 machdep_opts <- return []
1061 let split = dopt Opt_SplitObjs dflags
1063 | split = SplitMangle
1065 output_fn <- liftIO $ get_output_fn dflags next_phase maybe_loc
1067 liftIO $ SysTools.runMangle dflags (map SysTools.Option mangler_opts
1068 ++ [ SysTools.FileOption "" input_fn
1069 , SysTools.FileOption "" output_fn
1071 ++ map SysTools.Option machdep_opts)
1073 return (next_phase, dflags, maybe_loc, output_fn)
1075 -----------------------------------------------------------------------------
1078 runPhase SplitMangle _stop hsc_env _basename _suff input_fn _get_output_fn maybe_loc
1080 do -- tmp_pfx is the prefix used for the split .s files
1081 -- We also use it as the file to contain the no. of split .s files (sigh)
1082 let dflags = hsc_dflags hsc_env
1083 split_s_prefix <- SysTools.newTempName dflags "split"
1084 let n_files_fn = split_s_prefix
1086 SysTools.runSplit dflags
1087 [ SysTools.FileOption "" input_fn
1088 , SysTools.FileOption "" split_s_prefix
1089 , SysTools.FileOption "" n_files_fn
1092 -- Save the number of split files for future references
1093 s <- readFile n_files_fn
1094 let n_files = read s :: Int
1095 dflags' = dflags { splitInfo = Just (split_s_prefix, n_files) }
1097 -- Remember to delete all these files
1098 addFilesToClean dflags' [ split_s_prefix ++ "__" ++ show n ++ ".s"
1099 | n <- [1..n_files]]
1101 return (SplitAs, dflags', maybe_loc, "**splitmangle**")
1102 -- we don't use the filename
1104 -----------------------------------------------------------------------------
1107 runPhase As _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
1109 do let dflags = hsc_dflags hsc_env
1110 let as_opts = getOpts dflags opt_a
1111 let cmdline_include_paths = includePaths dflags
1113 output_fn <- get_output_fn dflags StopLn maybe_loc
1115 -- we create directories for the object file, because it
1116 -- might be a hierarchical module.
1117 createDirectoryHierarchy (takeDirectory output_fn)
1119 let (md_c_flags, _) = machdepCCOpts dflags
1120 SysTools.runAs dflags
1121 (map SysTools.Option as_opts
1122 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
1123 #ifdef sparc_TARGET_ARCH
1124 -- We only support SparcV9 and better because V8 lacks an atomic CAS
1125 -- instruction so we have to make sure that the assembler accepts the
1126 -- instruction set. Note that the user can still override this
1127 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
1128 -- regardless of the ordering.
1130 -- This is a temporary hack.
1131 ++ [ SysTools.Option "-mcpu=v9" ]
1133 ++ [ SysTools.Option "-c"
1134 , SysTools.FileOption "" input_fn
1135 , SysTools.Option "-o"
1136 , SysTools.FileOption "" output_fn
1138 ++ map SysTools.Option md_c_flags)
1140 return (StopLn, dflags, maybe_loc, output_fn)
1143 runPhase SplitAs _stop hsc_env _basename _suff _input_fn get_output_fn maybe_loc
1145 let dflags = hsc_dflags hsc_env
1146 output_fn <- get_output_fn dflags StopLn maybe_loc
1148 let base_o = dropExtension output_fn
1149 osuf = objectSuf dflags
1150 split_odir = base_o ++ "_" ++ osuf ++ "_split"
1152 createDirectoryHierarchy split_odir
1154 -- remove M_split/ *.o, because we're going to archive M_split/ *.o
1155 -- later and we don't want to pick up any old objects.
1156 fs <- getDirectoryContents split_odir
1157 mapM_ removeFile $ map (split_odir </>) $ filter (osuf `isSuffixOf`) fs
1159 let as_opts = getOpts dflags opt_a
1161 let (split_s_prefix, n) = case splitInfo dflags of
1162 Nothing -> panic "No split info"
1165 let split_s n = split_s_prefix ++ "__" ++ show n <.> "s"
1166 split_obj n = split_odir </>
1167 takeFileName base_o ++ "__" ++ show n <.> osuf
1169 let (md_c_flags, _) = machdepCCOpts dflags
1171 = SysTools.runAs dflags
1172 (map SysTools.Option as_opts ++
1173 #ifdef sparc_TARGET_ARCH
1174 -- We only support SparcV9 and better because V8 lacks an atomic CAS
1175 -- instruction so we have to make sure that the assembler accepts the
1176 -- instruction set. Note that the user can still override this
1177 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
1178 -- regardless of the ordering.
1180 -- This is a temporary hack.
1181 [ SysTools.Option "-mcpu=v9" ] ++
1183 [ SysTools.Option "-c"
1184 , SysTools.Option "-o"
1185 , SysTools.FileOption "" (split_obj n)
1186 , SysTools.FileOption "" (split_s n)
1188 ++ map SysTools.Option md_c_flags)
1190 mapM_ assemble_file [1..n]
1192 -- and join the split objects into a single object file:
1193 let ld_r args = SysTools.runLink dflags ([
1194 SysTools.Option "-nostdlib",
1195 SysTools.Option "-nodefaultlibs",
1196 SysTools.Option "-Wl,-r",
1197 SysTools.Option ld_x_flag,
1198 SysTools.Option "-o",
1199 SysTools.FileOption "" output_fn ]
1200 ++ map SysTools.Option md_c_flags
1202 ld_x_flag | null cLD_X = ""
1203 | otherwise = "-Wl,-x"
1205 if cLdIsGNULd == "YES"
1207 let script = split_odir </> "ld.script"
1209 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1210 ld_r [SysTools.FileOption "" script]
1212 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1214 return (StopLn, dflags, maybe_loc, output_fn)
1216 -- warning suppression
1217 runPhase other _stop _dflags _basename _suff _input_fn _get_output_fn _maybe_loc =
1218 panic ("runPhase: don't know how to run phase " ++ show other)
1219 -----------------------------------------------------------------------------
1220 -- MoveBinary sort-of-phase
1221 -- After having produced a binary, move it somewhere else and generate a
1222 -- wrapper script calling the binary. Currently, we need this only in
1223 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
1224 -- central directory.
1225 -- This is called from linkBinary below, after linking. I haven't made it
1226 -- a separate phase to minimise interfering with other modules, and
1227 -- we don't need the generality of a phase (MoveBinary is always
1228 -- done after linking and makes only sense in a parallel setup) -- HWL
1230 runPhase_MoveBinary :: DynFlags -> FilePath -> [PackageId] -> IO Bool
1231 runPhase_MoveBinary dflags input_fn dep_packages
1232 | WayPar `elem` (wayNames dflags) && not opt_Static =
1233 panic ("Don't know how to combine PVM wrapper and dynamic wrapper")
1234 | WayPar `elem` (wayNames dflags) = do
1235 let sysMan = pgm_sysman dflags
1236 pvm_root <- getEnv "PVM_ROOT"
1237 pvm_arch <- getEnv "PVM_ARCH"
1239 pvm_executable_base = "=" ++ input_fn
1240 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1241 -- nuke old binary; maybe use configur'ed names for cp and rm?
1242 _ <- tryIO (removeFile pvm_executable)
1243 -- move the newly created binary into PVM land
1244 copy dflags "copying PVM executable" input_fn pvm_executable
1245 -- generate a wrapper script for running a parallel prg under PVM
1246 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1249 case (dynLibLoader dflags) of
1252 let (o_base, o_ext) = splitExtension input_fn
1253 let wrapped_executable | o_ext == "exe" = (o_base ++ ".dyn") <.> o_ext
1254 | otherwise = input_fn ++ ".dyn"
1255 behaviour <- wrapper_behaviour dflags wrapmode dep_packages
1257 -- THINKME isn't this possible to do a bit nicer?
1258 let behaviour' = concatMap (\x -> if x=='\\' then "\\\\" else [x]) behaviour
1259 renameFile input_fn wrapped_executable
1260 let rtsDetails = (getPackageDetails (pkgState dflags) rtsPackageId);
1261 SysTools.runCc dflags
1262 ([ SysTools.FileOption "" ((head (libraryDirs rtsDetails)) ++ "/dyn-wrapper.c")
1263 , SysTools.Option ("-DBEHAVIOUR=\"" ++ behaviour' ++ "\"")
1264 , SysTools.Option "-o"
1265 , SysTools.FileOption "" input_fn
1266 ] ++ map (SysTools.FileOption "-I") (includeDirs rtsDetails))
1269 | otherwise = return True
1271 wrapper_behaviour :: DynFlags -> Maybe [Char] -> [PackageId] -> IO [Char]
1272 wrapper_behaviour dflags mode dep_packages =
1273 let seperateBySemiColon strs = tail $ concatMap (';':) strs
1276 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1277 return ('H' : (seperateBySemiColon pkg_lib_paths))
1279 allpkg <- getPreloadPackagesAnd dflags dep_packages
1280 putStrLn (unwords (map (packageIdString . packageConfigId) allpkg))
1281 return $ 'F':s ++ ';':(seperateBySemiColon (map (packageIdString . packageConfigId) allpkg))
1283 -- generates a Perl skript starting a parallel prg under PVM
1284 mk_pvm_wrapper_script :: String -> String -> String -> String
1285 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1287 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1288 " if $running_under_some_shell;",
1289 "# =!=!=!=!=!=!=!=!=!=!=!",
1290 "# This script is automatically generated: DO NOT EDIT!!!",
1291 "# Generated by Glasgow Haskell Compiler",
1292 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1294 "$pvm_executable = '" ++ pvm_executable ++ "';",
1295 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1296 "$SysMan = '" ++ sysMan ++ "';",
1298 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1299 "# first, some magical shortcuts to run "commands" on the binary",
1300 "# (which is hidden)",
1301 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1302 " local($cmd) = $1;",
1303 " system("$cmd $pvm_executable");",
1304 " exit(0); # all done",
1307 "# Now, run the real binary; process the args first",
1308 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1310 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1311 "@nonPVM_args = ();",
1312 "$in_RTS_args = 0;",
1314 "args: while ($a = shift(@ARGV)) {",
1315 " if ( $a eq '+RTS' ) {",
1316 " $in_RTS_args = 1;",
1317 " } elsif ( $a eq '-RTS' ) {",
1318 " $in_RTS_args = 0;",
1320 " if ( $a eq '-d' && $in_RTS_args ) {",
1322 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1323 " $nprocessors = $1;",
1324 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1325 " $nprocessors = $1;",
1327 " push(@nonPVM_args, $a);",
1331 "local($return_val) = 0;",
1332 "# Start the parallel execution by calling SysMan",
1333 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1334 "$return_val = $?;",
1335 "# ToDo: fix race condition moving files and flushing them!!",
1336 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1337 "exit($return_val);"
1340 -----------------------------------------------------------------------------
1341 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1343 getHCFilePackages :: FilePath -> IO [PackageId]
1344 getHCFilePackages filename =
1345 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1348 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1349 return (map stringToPackageId (words rest))
1353 -----------------------------------------------------------------------------
1354 -- Static linking, of .o files
1356 -- The list of packages passed to link is the list of packages on
1357 -- which this program depends, as discovered by the compilation
1358 -- manager. It is combined with the list of packages that the user
1359 -- specifies on the command line with -package flags.
1361 -- In one-shot linking mode, we can't discover the package
1362 -- dependencies (because we haven't actually done any compilation or
1363 -- read any interface files), so the user must explicitly specify all
1366 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1367 linkBinary dflags o_files dep_packages = do
1368 let verb = getVerbFlag dflags
1369 output_fn = exeFileName dflags
1371 -- get the full list of packages to link with, by combining the
1372 -- explicit packages with the auto packages and all of their
1373 -- dependencies, and eliminating duplicates.
1375 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1376 let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
1377 #ifdef linux_TARGET_OS
1378 get_pkg_lib_path_opts l | (dynLibLoader dflags)==SystemDependent && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1379 | otherwise = ["-L" ++ l]
1381 get_pkg_lib_path_opts l = ["-L" ++ l]
1384 let lib_paths = libraryPaths dflags
1385 let lib_path_opts = map ("-L"++) lib_paths
1387 -- The C "main" function is not in the rts but in a separate static
1388 -- library libHSrtsmain.a that sits next to the rts lib files. Assuming
1389 -- we're using a Haskell main function then we need to link it in.
1390 let no_hs_main = dopt Opt_NoHsMain dflags
1391 let main_lib | no_hs_main = []
1392 | otherwise = [ "-lHSrtsmain" ]
1394 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1396 #ifdef darwin_TARGET_OS
1397 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1398 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1400 let framework_paths = frameworkPaths dflags
1401 framework_path_opts = map ("-F"++) framework_paths
1403 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1404 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1406 let frameworks = cmdlineFrameworks dflags
1407 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1408 -- reverse because they're added in reverse order from the cmd line
1410 -- probably _stub.o files
1411 extra_ld_inputs <- readIORef v_Ld_inputs
1413 -- opts from -optl-<blah> (including -l<blah> options)
1414 let extra_ld_opts = getOpts dflags opt_l
1416 let ways = wayNames dflags
1418 -- Here are some libs that need to be linked at the *end* of
1419 -- the command line, because they contain symbols that are referred to
1420 -- by the RTS. We can't therefore use the ordinary way opts for these.
1422 debug_opts | WayDebug `elem` ways = [
1423 #if defined(HAVE_LIBBFD)
1430 thread_opts | WayThreaded `elem` ways = [
1431 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1434 #if defined(osf3_TARGET_OS)
1440 rc_objs <- maybeCreateManifest dflags output_fn
1442 let (md_c_flags, _) = machdepCCOpts dflags
1443 SysTools.runLink dflags (
1444 [ SysTools.Option verb
1445 , SysTools.Option "-o"
1446 , SysTools.FileOption "" output_fn
1448 ++ map SysTools.Option (
1451 #ifdef mingw32_TARGET_OS
1452 -- Permit the linker to auto link _symbol to _imp_symbol.
1453 -- This lets us link against DLLs without needing an "import library".
1454 ++ ["-Wl,--enable-auto-import"]
1461 #ifdef darwin_TARGET_OS
1462 ++ framework_path_opts
1465 ++ pkg_lib_path_opts
1468 #ifdef darwin_TARGET_OS
1469 ++ pkg_framework_path_opts
1470 ++ pkg_framework_opts
1476 -- parallel only: move binary to another dir -- HWL
1477 success <- runPhase_MoveBinary dflags output_fn dep_packages
1478 if success then return ()
1479 else ghcError (InstallationError ("cannot move binary"))
1482 exeFileName :: DynFlags -> FilePath
1484 | Just s <- outputFile dflags =
1485 #if defined(mingw32_HOST_OS)
1486 if null (takeExtension s)
1493 #if defined(mingw32_HOST_OS)
1501 -> FilePath -- filename of executable
1502 -> IO [FilePath] -- extra objects to embed, maybe
1503 #ifndef mingw32_TARGET_OS
1504 maybeCreateManifest _ _ = do
1507 maybeCreateManifest dflags exe_filename = do
1508 if not (dopt Opt_GenManifest dflags) then return [] else do
1510 let manifest_filename = exe_filename <.> "manifest"
1512 writeFile manifest_filename $
1513 "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"++
1514 " <assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestVersion=\"1.0\">\n"++
1515 " <assemblyIdentity version=\"1.0.0.0\"\n"++
1516 " processorArchitecture=\"X86\"\n"++
1517 " name=\"" ++ dropExtension exe_filename ++ "\"\n"++
1518 " type=\"win32\"/>\n\n"++
1519 " <trustInfo xmlns=\"urn:schemas-microsoft-com:asm.v3\">\n"++
1521 " <requestedPrivileges>\n"++
1522 " <requestedExecutionLevel level=\"asInvoker\" uiAccess=\"false\"/>\n"++
1523 " </requestedPrivileges>\n"++
1528 -- Windows will find the manifest file if it is named foo.exe.manifest.
1529 -- However, for extra robustness, and so that we can move the binary around,
1530 -- we can embed the manifest in the binary itself using windres:
1531 if not (dopt Opt_EmbedManifest dflags) then return [] else do
1533 rc_filename <- newTempName dflags "rc"
1534 rc_obj_filename <- newTempName dflags (objectSuf dflags)
1536 writeFile rc_filename $
1537 "1 24 MOVEABLE PURE " ++ show manifest_filename ++ "\n"
1538 -- magic numbers :-)
1539 -- show is a bit hackish above, but we need to escape the
1540 -- backslashes in the path.
1542 let wr_opts = getOpts dflags opt_windres
1543 runWindres dflags $ map SysTools.Option $
1544 ["--input="++rc_filename,
1545 "--output="++rc_obj_filename,
1546 "--output-format=coff"]
1548 -- no FileOptions here: windres doesn't like seeing
1549 -- backslashes, apparently
1551 removeFile manifest_filename
1553 return [rc_obj_filename]
1557 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1558 linkDynLib dflags o_files dep_packages = do
1559 let verb = getVerbFlag dflags
1560 let o_file = outputFile dflags
1562 -- We don't want to link our dynamic libs against the RTS package,
1563 -- because the RTS lib comes in several flavours and we want to be
1564 -- able to pick the flavour when a binary is linked.
1565 pkgs <- getPreloadPackagesAnd dflags dep_packages
1567 -- On Windows we need to link the RTS import lib as Windows does
1568 -- not allow undefined symbols.
1569 #if !defined(mingw32_HOST_OS)
1570 let pkgs_no_rts = filter ((/= rtsPackageId) . packageConfigId) pkgs
1572 let pkgs_no_rts = pkgs
1574 let pkg_lib_paths = collectLibraryPaths pkgs_no_rts
1575 let pkg_lib_path_opts = concatMap get_pkg_lib_path_opts pkg_lib_paths
1576 #ifdef linux_TARGET_OS
1577 get_pkg_lib_path_opts l | (dynLibLoader dflags)==SystemDependent && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1578 | otherwise = ["-L" ++ l]
1580 get_pkg_lib_path_opts l = ["-L" ++ l]
1583 let lib_paths = libraryPaths dflags
1584 let lib_path_opts = map ("-L"++) lib_paths
1586 let pkg_link_opts = collectLinkOpts dflags pkgs_no_rts
1588 -- probably _stub.o files
1589 extra_ld_inputs <- readIORef v_Ld_inputs
1591 let (md_c_flags, _) = machdepCCOpts dflags
1592 let extra_ld_opts = getOpts dflags opt_l
1593 #if defined(mingw32_HOST_OS)
1594 -----------------------------------------------------------------------------
1596 -----------------------------------------------------------------------------
1597 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1599 SysTools.runLink dflags
1600 ([ SysTools.Option verb
1601 , SysTools.Option "-o"
1602 , SysTools.FileOption "" output_fn
1603 , SysTools.Option "-shared"
1605 [ SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
1606 | dopt Opt_SharedImplib dflags
1608 ++ map (SysTools.FileOption "") o_files
1609 ++ map SysTools.Option (
1612 -- Permit the linker to auto link _symbol to _imp_symbol
1613 -- This lets us link against DLLs without needing an "import library"
1614 ++ ["-Wl,--enable-auto-import"]
1619 ++ pkg_lib_path_opts
1622 #elif defined(darwin_TARGET_OS)
1623 -----------------------------------------------------------------------------
1624 -- Making a darwin dylib
1625 -----------------------------------------------------------------------------
1626 -- About the options used for Darwin:
1628 -- Apple's way of saying -shared
1629 -- -undefined dynamic_lookup:
1630 -- Without these options, we'd have to specify the correct dependencies
1631 -- for each of the dylibs. Note that we could (and should) do without this
1632 -- for all libraries except the RTS; all we need to do is to pass the
1633 -- correct HSfoo_dyn.dylib files to the link command.
1634 -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
1635 -- -flat_namespace -undefined suppress, which works on earlier versions,
1636 -- but it has other disadvantages.
1638 -- Build the dynamic library as a single "module", i.e. no dynamic binding
1639 -- nonsense when referring to symbols from within the library. The NCG
1640 -- assumes that this option is specified (on i386, at least).
1641 -- -Wl,-macosx_version_min -Wl,10.3
1642 -- Tell the linker its safe to assume that the library will run on 10.3 or
1643 -- later, so that it will not complain about the use of the option
1644 -- -undefined dynamic_lookup above.
1646 -- Causes the dynamic linker to ignore the DYLD_LIBRARY_PATH when loading
1647 -- this lib and instead look for it at its absolute path.
1648 -- When installing the .dylibs (see target.mk), we'll change that path to
1649 -- point to the place they are installed. Therefore, we won't have to set
1650 -- up DYLD_LIBRARY_PATH specifically for ghc.
1651 -----------------------------------------------------------------------------
1653 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1655 pwd <- getCurrentDirectory
1656 SysTools.runLink dflags
1657 ([ SysTools.Option verb
1658 , SysTools.Option "-dynamiclib"
1659 , SysTools.Option "-o"
1660 , SysTools.FileOption "" output_fn
1662 ++ map SysTools.Option (
1665 ++ [ "-undefined", "dynamic_lookup", "-single_module", "-Wl,-macosx_version_min","-Wl,10.5", "-install_name " ++ (pwd </> output_fn) ]
1669 ++ pkg_lib_path_opts
1673 -----------------------------------------------------------------------------
1675 -----------------------------------------------------------------------------
1677 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1679 SysTools.runLink dflags
1680 ([ SysTools.Option verb
1681 , SysTools.Option "-o"
1682 , SysTools.FileOption "" output_fn
1684 ++ map SysTools.Option (
1687 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1688 ++ [ "-Wl,-soname," ++ takeFileName output_fn ] -- set the library soname
1692 ++ pkg_lib_path_opts
1696 -- -----------------------------------------------------------------------------
1699 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1700 doCpp dflags raw include_cc_opts input_fn output_fn = do
1701 let hscpp_opts = getOpts dflags opt_P
1702 let cmdline_include_paths = includePaths dflags
1704 pkg_include_dirs <- getPackageIncludePath dflags []
1705 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1706 (cmdline_include_paths ++ pkg_include_dirs)
1708 let verb = getVerbFlag dflags
1711 | not include_cc_opts = []
1712 | otherwise = (optc ++ md_c_flags)
1714 optc = getOpts dflags opt_c
1715 (md_c_flags, _) = machdepCCOpts dflags
1717 let cpp_prog args | raw = SysTools.runCpp dflags args
1718 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1721 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1722 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1723 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1724 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1725 -- remember, in code we *compile*, the HOST is the same our TARGET,
1726 -- and BUILD is the same as our HOST.
1728 cpp_prog ([SysTools.Option verb]
1729 ++ map SysTools.Option include_paths
1730 ++ map SysTools.Option hsSourceCppOpts
1731 ++ map SysTools.Option hscpp_opts
1732 ++ map SysTools.Option cc_opts
1733 ++ map SysTools.Option target_defs
1734 ++ [ SysTools.Option "-x"
1735 , SysTools.Option "c"
1736 , SysTools.Option input_fn
1737 -- We hackily use Option instead of FileOption here, so that the file
1738 -- name is not back-slashed on Windows. cpp is capable of
1739 -- dealing with / in filenames, so it works fine. Furthermore
1740 -- if we put in backslashes, cpp outputs #line directives
1741 -- with *double* backslashes. And that in turn means that
1742 -- our error messages get double backslashes in them.
1743 -- In due course we should arrange that the lexer deals
1744 -- with these \\ escapes properly.
1745 , SysTools.Option "-o"
1746 , SysTools.FileOption "" output_fn
1749 cHaskell1Version :: String
1750 cHaskell1Version = "5" -- i.e., Haskell 98
1752 hsSourceCppOpts :: [String]
1753 -- Default CPP defines in Haskell source
1755 [ "-D__HASKELL1__="++cHaskell1Version
1756 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1758 , "-D__CONCURRENT_HASKELL__"
1762 -- -----------------------------------------------------------------------------
1765 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1766 hscNextPhase _ HsBootFile _ = StopLn
1767 hscNextPhase dflags _ hsc_lang =
1770 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1772 HscNothing -> StopLn
1773 HscInterpreted -> StopLn
1777 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1778 hscMaybeAdjustTarget dflags stop _ current_hsc_lang
1781 keep_hc = dopt Opt_KeepHcFiles dflags
1783 -- don't change the lang if we're interpreting
1784 | current_hsc_lang == HscInterpreted = current_hsc_lang
1786 -- force -fvia-C if we are being asked for a .hc file
1787 | HCc <- stop = HscC
1789 -- otherwise, stick to the plan
1790 | otherwise = current_hsc_lang