2 -- The above warning supression flag is a temporary kludge.
3 -- While working on this module you are encouraged to remove it and fix
4 -- any warnings in the module. See
5 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
8 -----------------------------------------------------------------------------
12 -- (c) The University of Glasgow 2005
14 -----------------------------------------------------------------------------
16 module DriverPipeline (
17 -- Run a series of compilation steps in a pipeline, for a
18 -- collection of source files.
21 -- Interfaces for the batch-mode driver
24 -- Interfaces for the compilation manager (interpreted/batch-mode)
31 #include "HsVersions.h"
42 import UniqFM ( eltsUFM )
45 import StaticFlags ( v_Ld_inputs, opt_Static, opt_HardwireLibPaths, WayName(..) )
49 import StringBuffer ( hGetStringBuffer )
50 import BasicTypes ( SuccessFlag(..) )
51 import Maybes ( expectJust )
52 import ParserCoreUtils ( getCoreModuleName )
53 import SrcLoc ( unLoc )
54 import SrcLoc ( Located(..) )
56 import Control.Exception as Exception
57 import Data.IORef ( readIORef, writeIORef, IORef )
58 import GHC.Exts ( Int(..) )
59 import System.Directory
61 import SYSTEM_IO_ERROR as IO
63 import Data.List ( isSuffixOf )
66 import System.Environment
68 -- ---------------------------------------------------------------------------
71 -- Just preprocess a file, put the result in a temp. file (used by the
72 -- compilation manager during the summary phase).
74 -- We return the augmented DynFlags, because they contain the result
75 -- of slurping in the OPTIONS pragmas
77 preprocess :: DynFlags -> (FilePath, Maybe Phase) -> IO (DynFlags, FilePath)
78 preprocess dflags (filename, mb_phase) =
79 ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
80 runPipeline anyHsc dflags (filename, mb_phase)
81 Nothing Temporary Nothing{-no ModLocation-}
83 -- ---------------------------------------------------------------------------
86 -- Compile a single module, under the control of the compilation manager.
88 -- This is the interface between the compilation manager and the
89 -- compiler proper (hsc), where we deal with tedious details like
90 -- reading the OPTIONS pragma from the source file, and passing the
91 -- output of hsc through the C compiler.
93 -- NB. No old interface can also mean that the source has changed.
96 -> ModSummary -- summary for module being compiled
97 -> Int -> Int -- module N of M
98 -> Maybe ModIface -- old interface, if we have one
99 -> Maybe Linkable -- old linkable, if we have one
100 -> IO (Maybe HomeModInfo) -- the complete HomeModInfo, if successful
102 compile hsc_env summary mod_index nmods mb_old_iface maybe_old_linkable
104 let dflags0 = ms_hspp_opts summary
105 this_mod = ms_mod summary
106 src_flavour = ms_hsc_src summary
109 | Just l <- maybe_old_linkable, isObjectLinkable l = True
112 let location = ms_location summary
113 let input_fn = expectJust "compile:hs" (ml_hs_file location)
114 let input_fnpp = ms_hspp_file summary
116 debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
118 let (basename, _) = splitFilename input_fn
120 -- We add the directory in which the .hs files resides) to the import path.
121 -- This is needed when we try to compile the .hc file later, if it
122 -- imports a _stub.h file that we created here.
123 let current_dir = directoryOf basename
124 old_paths = includePaths dflags0
125 dflags = dflags0 { includePaths = current_dir : old_paths }
127 -- Figure out what lang we're generating
128 let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
129 -- ... and what the next phase should be
130 let next_phase = hscNextPhase dflags src_flavour hsc_lang
131 -- ... and what file to generate the output into
132 output_fn <- getOutputFilename next_phase
133 Temporary basename dflags next_phase (Just location)
135 let dflags' = dflags { hscTarget = hsc_lang,
136 hscOutName = output_fn,
137 extCoreName = basename ++ ".hcr" }
139 -- -no-recomp should also work with --make
140 let force_recomp = dopt Opt_ForceRecomp dflags
141 source_unchanged = isJust maybe_old_linkable && not force_recomp
142 hsc_env' = hsc_env { hsc_dflags = dflags' }
143 object_filename = ml_obj_file location
145 let getStubLinkable False = return []
147 = do stub_o <- compileStub dflags' this_mod location
148 return [ DotO stub_o ]
150 handleBatch HscNoRecomp
151 = ASSERT (isJust maybe_old_linkable)
152 return maybe_old_linkable
154 handleBatch (HscRecomp hasStub)
155 | isHsBoot src_flavour
156 = do when (isObjectTarget hsc_lang) $ -- interpreted reaches here too
157 SysTools.touch dflags' "Touching object file"
159 return maybe_old_linkable
162 = do stub_unlinked <- getStubLinkable hasStub
163 (hs_unlinked, unlinked_time) <-
166 -> return ([], ms_hs_date summary)
167 -- We're in --make mode: finish the compilation pipeline.
169 -> do runPipeline StopLn dflags (output_fn,Nothing)
173 -- The object filename comes from the ModLocation
174 o_time <- getModificationTime object_filename
175 return ([DotO object_filename], o_time)
176 let linkable = LM unlinked_time this_mod
177 (hs_unlinked ++ stub_unlinked)
178 return (Just linkable)
180 handleInterpreted InteractiveNoRecomp
181 = ASSERT (isJust maybe_old_linkable)
182 return maybe_old_linkable
183 handleInterpreted (InteractiveRecomp hasStub comp_bc modBreaks)
184 = do stub_unlinked <- getStubLinkable hasStub
185 let hs_unlinked = [BCOs comp_bc modBreaks]
186 unlinked_time = ms_hs_date summary
187 -- Why do we use the timestamp of the source file here,
188 -- rather than the current time? This works better in
189 -- the case where the local clock is out of sync
190 -- with the filesystem's clock. It's just as accurate:
191 -- if the source is modified, then the linkable will
193 let linkable = LM unlinked_time this_mod
194 (hs_unlinked ++ stub_unlinked)
195 return (Just linkable)
197 let -- runCompiler :: Compiler result -> (result -> Maybe Linkable)
198 -- -> IO (Maybe HomeModInfo)
199 runCompiler compiler handle
200 = do mbResult <- compiler hsc_env' summary source_unchanged mb_old_iface
201 (Just (mod_index, nmods))
203 Nothing -> return Nothing
204 Just (result, iface, details) -> do
205 linkable <- handle result
206 return (Just HomeModInfo{ hm_details = details,
208 hm_linkable = linkable })
212 | isHsBoot src_flavour ->
213 runCompiler hscCompileNothing handleBatch
215 runCompiler hscCompileInteractive handleInterpreted
217 runCompiler hscCompileNothing handleBatch
219 runCompiler hscCompileBatch handleBatch
221 -----------------------------------------------------------------------------
222 -- stub .h and .c files (for foreign export support)
224 -- The _stub.c file is derived from the haskell source file, possibly taking
225 -- into account the -stubdir option.
227 -- Consequently, we derive the _stub.o filename from the haskell object
230 -- This isn't necessarily the same as the object filename we
231 -- would get if we just compiled the _stub.c file using the pipeline.
234 -- ghc src/A.hs -odir obj
236 -- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
237 -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
240 compileStub :: DynFlags -> Module -> ModLocation -> IO FilePath
241 compileStub dflags mod location = do
242 let (o_base, o_ext) = splitFilename (ml_obj_file location)
243 stub_o = o_base ++ "_stub" `joinFileExt` o_ext
245 -- compile the _stub.c file w/ gcc
246 let (stub_c,_,_) = mkStubPaths dflags (moduleName mod) location
247 runPipeline StopLn dflags (stub_c,Nothing) Nothing
248 (SpecificFile stub_o) Nothing{-no ModLocation-}
253 -- ---------------------------------------------------------------------------
256 link :: GhcLink -- interactive or batch
257 -> DynFlags -- dynamic flags
258 -> Bool -- attempt linking in batch mode?
259 -> HomePackageTable -- what to link
262 -- For the moment, in the batch linker, we don't bother to tell doLink
263 -- which packages to link -- it just tries all that are available.
264 -- batch_attempt_linking should only be *looked at* in batch mode. It
265 -- should only be True if the upsweep was successful and someone
266 -- exports main, i.e., we have good reason to believe that linking
270 link LinkInMemory dflags batch_attempt_linking hpt
271 = do -- Not Linking...(demand linker will do the job)
275 link NoLink dflags batch_attempt_linking hpt
278 link LinkBinary dflags batch_attempt_linking hpt
279 | batch_attempt_linking
282 home_mod_infos = eltsUFM hpt
284 -- the packages we depend on
285 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
287 -- the linkables to link
288 linkables = map (expectJust "link".hm_linkable) home_mod_infos
290 debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
292 -- check for the -no-link flag
293 if isNoLink (ghcLink dflags)
294 then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
298 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
299 obj_files = concatMap getOfiles linkables
301 exe_file = exeFileName dflags
303 -- if the modification time on the executable is later than the
304 -- modification times on all of the objects, then omit linking
305 -- (unless the -no-recomp flag was given).
306 e_exe_time <- IO.try $ getModificationTime exe_file
307 extra_ld_inputs <- readIORef v_Ld_inputs
308 extra_times <- mapM (IO.try . getModificationTime) extra_ld_inputs
309 let other_times = map linkableTime linkables
310 ++ [ t' | Right t' <- extra_times ]
312 | Left _ <- e_exe_time = True
313 | Right t <- e_exe_time = any (t <) other_times
315 if not (dopt Opt_ForceRecomp dflags) && not linking_needed
316 then do debugTraceMsg dflags 2 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
320 debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
323 -- Don't showPass in Batch mode; doLink will do that for us.
324 let link = case ghcLink dflags of
325 LinkBinary -> linkBinary
326 LinkDynLib -> linkDynLib
327 link dflags obj_files pkg_deps
329 debugTraceMsg dflags 3 (text "link: done")
331 -- linkBinary only returns if it succeeds
335 = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
336 text " Main.main not exported; not linking.")
339 -- -----------------------------------------------------------------------------
340 -- Compile files in one-shot mode.
342 oneShot :: DynFlags -> Phase -> [(String, Maybe Phase)] -> IO ()
343 oneShot dflags stop_phase srcs = do
344 o_files <- mapM (compileFile dflags stop_phase) srcs
345 doLink dflags stop_phase o_files
347 compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
348 compileFile dflags stop_phase (src, mb_phase) = do
349 exists <- doesFileExist src
351 throwDyn (CmdLineError ("does not exist: " ++ src))
354 split = dopt Opt_SplitObjs dflags
355 mb_o_file = outputFile dflags
356 ghc_link = ghcLink dflags -- Set by -c or -no-link
358 -- When linking, the -o argument refers to the linker's output.
359 -- otherwise, we use it as the name for the pipeline's output.
361 | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent
362 -- -o foo applies to linker
363 | Just o_file <- mb_o_file = SpecificFile o_file
364 -- -o foo applies to the file we are compiling now
365 | otherwise = Persistent
367 stop_phase' = case stop_phase of
368 As | split -> SplitAs
371 (_, out_file) <- runPipeline stop_phase' dflags
372 (src, mb_phase) Nothing output
373 Nothing{-no ModLocation-}
377 doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
378 doLink dflags stop_phase o_files
379 | not (isStopLn stop_phase)
380 = return () -- We stopped before the linking phase
383 = case ghcLink dflags of
385 LinkBinary -> linkBinary dflags o_files link_pkgs
386 LinkDynLib -> linkDynLib dflags o_files []
388 -- Always link in the haskell98 package for static linking. Other
389 -- packages have to be specified via the -package flag.
390 link_pkgs = [haskell98PackageId]
393 -- ---------------------------------------------------------------------------
394 -- Run a compilation pipeline, consisting of multiple phases.
396 -- This is the interface to the compilation pipeline, which runs
397 -- a series of compilation steps on a single source file, specifying
398 -- at which stage to stop.
400 -- The DynFlags can be modified by phases in the pipeline (eg. by
401 -- GHC_OPTIONS pragmas), and the changes affect later phases in the
406 -- output should be to a temporary file: we're going to
407 -- run more compilation steps on this output later
409 -- we want a persistent file, i.e. a file in the current directory
410 -- derived from the input filename, but with the appropriate extension.
411 -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
412 | SpecificFile FilePath
413 -- the output must go into the specified file.
416 :: Phase -- When to stop
417 -> DynFlags -- Dynamic flags
418 -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
419 -> Maybe FilePath -- original basename (if different from ^^^)
420 -> PipelineOutput -- Output filename
421 -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
422 -> IO (DynFlags, FilePath) -- (final flags, output filename)
424 runPipeline stop_phase dflags0 (input_fn, mb_phase) mb_basename output maybe_loc
427 (input_basename, suffix) = splitFilename input_fn
428 basename | Just b <- mb_basename = b
429 | otherwise = input_basename
431 -- Decide where dump files should go based on the pipeline output
432 dflags = dflags0 { dumpPrefix = Just (basename ++ ".") }
434 -- If we were given a -x flag, then use that phase to start from
435 start_phase = fromMaybe (startPhase suffix) mb_phase
437 -- We want to catch cases of "you can't get there from here" before
438 -- we start the pipeline, because otherwise it will just run off the
441 -- There is a partial ordering on phases, where A < B iff A occurs
442 -- before B in a normal compilation pipeline.
444 when (not (start_phase `happensBefore` stop_phase)) $
446 ("cannot compile this file to desired target: "
449 -- this is a function which will be used to calculate output file names
450 -- as we go along (we partially apply it to some of its inputs here)
451 let get_output_fn = getOutputFilename stop_phase output basename
453 -- Execute the pipeline...
454 (dflags', output_fn, maybe_loc) <-
455 pipeLoop dflags start_phase stop_phase input_fn
456 basename suffix get_output_fn maybe_loc
458 -- Sometimes, a compilation phase doesn't actually generate any output
459 -- (eg. the CPP phase when -fcpp is not turned on). If we end on this
460 -- stage, but we wanted to keep the output, then we have to explicitly
461 -- copy the file, remembering to prepend a {-# LINE #-} pragma so that
462 -- further compilation stages can tell what the original filename was.
465 return (dflags', output_fn)
467 do final_fn <- get_output_fn dflags' stop_phase maybe_loc
468 when (final_fn /= output_fn) $ do
469 let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
470 line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
471 copyWithHeader dflags msg line_prag output_fn final_fn
472 return (dflags', final_fn)
476 pipeLoop :: DynFlags -> Phase -> Phase
477 -> FilePath -> String -> Suffix
478 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
480 -> IO (DynFlags, FilePath, Maybe ModLocation)
482 pipeLoop dflags phase stop_phase
483 input_fn orig_basename orig_suff
484 orig_get_output_fn maybe_loc
486 | phase `eqPhase` stop_phase -- All done
487 = return (dflags, input_fn, maybe_loc)
489 | not (phase `happensBefore` stop_phase)
490 -- Something has gone wrong. We'll try to cover all the cases when
491 -- this could happen, so if we reach here it is a panic.
492 -- eg. it might happen if the -C flag is used on a source file that
493 -- has {-# OPTIONS -fasm #-}.
494 = panic ("pipeLoop: at phase " ++ show phase ++
495 " but I wanted to stop at phase " ++ show stop_phase)
498 = do { (next_phase, dflags', maybe_loc, output_fn)
499 <- runPhase phase stop_phase dflags orig_basename
500 orig_suff input_fn orig_get_output_fn maybe_loc
501 ; pipeLoop dflags' next_phase stop_phase output_fn
502 orig_basename orig_suff orig_get_output_fn maybe_loc }
505 :: Phase -> PipelineOutput -> String
506 -> DynFlags -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
507 getOutputFilename stop_phase output basename
510 func dflags next_phase maybe_location
511 | is_last_phase, Persistent <- output = persistent_fn
512 | is_last_phase, SpecificFile f <- output = return f
513 | keep_this_output = persistent_fn
514 | otherwise = newTempName dflags suffix
517 odir = objectDir dflags
518 osuf = objectSuf dflags
519 keep_hc = dopt Opt_KeepHcFiles dflags
520 keep_raw_s = dopt Opt_KeepRawSFiles dflags
521 keep_s = dopt Opt_KeepSFiles dflags
523 myPhaseInputExt HCc = hcsuf
524 myPhaseInputExt StopLn = osuf
525 myPhaseInputExt other = phaseInputExt other
527 is_last_phase = next_phase `eqPhase` stop_phase
529 -- sometimes, we keep output from intermediate stages
533 Mangle | keep_raw_s -> True
535 HCc | keep_hc -> True
538 suffix = myPhaseInputExt next_phase
540 -- persistent object files get put in odir
542 | StopLn <- next_phase = return odir_persistent
543 | otherwise = return persistent
545 persistent = basename `joinFileExt` suffix
548 | Just loc <- maybe_location = ml_obj_file loc
549 | Just d <- odir = d `joinFileName` persistent
550 | otherwise = persistent
553 -- -----------------------------------------------------------------------------
554 -- Each phase in the pipeline returns the next phase to execute, and the
555 -- name of the file in which the output was placed.
557 -- We must do things dynamically this way, because we often don't know
558 -- what the rest of the phases will be until part-way through the
559 -- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
560 -- of a source file can change the latter stages of the pipeline from
561 -- taking the via-C route to using the native code generator.
563 runPhase :: Phase -- Do this phase first
564 -> Phase -- Stop just before this phase
566 -> String -- basename of original input source
567 -> String -- its extension
568 -> FilePath -- name of file which contains the input to this phase.
569 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
570 -- how to calculate the output filename
571 -> Maybe ModLocation -- the ModLocation, if we have one
572 -> IO (Phase, -- next phase
573 DynFlags, -- new dynamic flags
574 Maybe ModLocation, -- the ModLocation, if we have one
575 FilePath) -- output filename
577 -- Invariant: the output filename always contains the output
578 -- Interesting case: Hsc when there is no recompilation to do
579 -- Then the output filename is still a .o file
581 -------------------------------------------------------------------------------
584 runPhase (Unlit sf) _stop dflags _basename _suff input_fn get_output_fn maybe_loc
585 = do let unlit_flags = getOpts dflags opt_L
586 -- The -h option passes the file name for unlit to put in a #line directive
587 output_fn <- get_output_fn dflags (Cpp sf) maybe_loc
589 SysTools.runUnlit dflags
590 (map SysTools.Option unlit_flags ++
591 [ SysTools.Option "-h"
592 , SysTools.Option input_fn
593 , SysTools.FileOption "" input_fn
594 , SysTools.FileOption "" output_fn
597 return (Cpp sf, dflags, maybe_loc, output_fn)
599 -------------------------------------------------------------------------------
600 -- Cpp phase : (a) gets OPTIONS out of file
601 -- (b) runs cpp if necessary
603 runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc
604 = do src_opts <- getOptionsFromFile input_fn
605 (dflags,unhandled_flags) <- parseDynamicFlags dflags0 (map unLoc src_opts)
606 checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff)
608 if not (dopt Opt_Cpp dflags) then
609 -- no need to preprocess CPP, just pass input file along
610 -- to the next phase of the pipeline.
611 return (HsPp sf, dflags, maybe_loc, input_fn)
613 output_fn <- get_output_fn dflags (HsPp sf) maybe_loc
614 doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
615 return (HsPp sf, dflags, maybe_loc, output_fn)
617 -------------------------------------------------------------------------------
620 runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
621 = do if not (dopt Opt_Pp dflags) then
622 -- no need to preprocess, just pass input file along
623 -- to the next phase of the pipeline.
624 return (Hsc sf, dflags, maybe_loc, input_fn)
626 let hspp_opts = getOpts dflags opt_F
627 let orig_fn = basename `joinFileExt` suff
628 output_fn <- get_output_fn dflags (Hsc sf) maybe_loc
629 SysTools.runPp dflags
630 ( [ SysTools.Option orig_fn
631 , SysTools.Option input_fn
632 , SysTools.FileOption "" output_fn
634 map SysTools.Option hspp_opts
636 return (Hsc sf, dflags, maybe_loc, output_fn)
638 -----------------------------------------------------------------------------
641 -- Compilation of a single module, in "legacy" mode (_not_ under
642 -- the direction of the compilation manager).
643 runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _maybe_loc
644 = do -- normal Hsc mode, not mkdependHS
646 -- we add the current directory (i.e. the directory in which
647 -- the .hs files resides) to the include path, since this is
648 -- what gcc does, and it's probably what you want.
649 let current_dir = directoryOf basename
651 paths = includePaths dflags0
652 dflags = dflags0 { includePaths = current_dir : paths }
654 -- gather the imports and module name
655 (hspp_buf,mod_name,imps,src_imps) <-
657 ExtCoreFile -> do { -- no explicit imports in ExtCore input.
658 ; m <- getCoreModuleName input_fn
659 ; return (Nothing, mkModuleName m, [], []) }
661 other -> do { buf <- hGetStringBuffer input_fn
662 ; (src_imps,imps,L _ mod_name) <- getImports dflags buf input_fn (basename `joinFileExt` suff)
663 ; return (Just buf, mod_name, imps, src_imps) }
665 -- Build a ModLocation to pass to hscMain.
666 -- The source filename is rather irrelevant by now, but it's used
667 -- by hscMain for messages. hscMain also needs
668 -- the .hi and .o filenames, and this is as good a way
669 -- as any to generate them, and better than most. (e.g. takes
670 -- into accout the -osuf flags)
671 location1 <- mkHomeModLocation2 dflags mod_name basename suff
673 -- Boot-ify it if necessary
674 let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
675 | otherwise = location1
678 -- Take -ohi into account if present
679 -- This can't be done in mkHomeModuleLocation because
680 -- it only applies to the module being compiles
681 let ohi = outputHi dflags
682 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
683 | otherwise = location2
685 -- Take -o into account if present
686 -- Very like -ohi, but we must *only* do this if we aren't linking
687 -- (If we're linking then the -o applies to the linked thing, not to
688 -- the object file for one module.)
689 -- Note the nasty duplication with the same computation in compileFile above
690 let expl_o_file = outputFile dflags
691 location4 | Just ofile <- expl_o_file
692 , isNoLink (ghcLink dflags)
693 = location3 { ml_obj_file = ofile }
694 | otherwise = location3
696 o_file = ml_obj_file location4 -- The real object file
699 -- Figure out if the source has changed, for recompilation avoidance.
701 -- Setting source_unchanged to True means that M.o seems
702 -- to be up to date wrt M.hs; so no need to recompile unless imports have
703 -- changed (which the compiler itself figures out).
704 -- Setting source_unchanged to False tells the compiler that M.o is out of
705 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
706 src_timestamp <- getModificationTime (basename `joinFileExt` suff)
708 let force_recomp = dopt Opt_ForceRecomp dflags
710 if force_recomp || not (isStopLn stop)
711 -- Set source_unchanged to False unconditionally if
712 -- (a) recompilation checker is off, or
713 -- (b) we aren't going all the way to .o file (e.g. ghc -S)
715 -- Otherwise look at file modification dates
716 else do o_file_exists <- doesFileExist o_file
718 then return False -- Need to recompile
719 else do t2 <- getModificationTime o_file
720 if t2 > src_timestamp
725 let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
726 let next_phase = hscNextPhase dflags src_flavour hsc_lang
727 output_fn <- get_output_fn dflags next_phase (Just location4)
729 let dflags' = dflags { hscTarget = hsc_lang,
730 hscOutName = output_fn,
731 extCoreName = basename ++ ".hcr" }
733 hsc_env <- newHscEnv dflags'
735 -- Tell the finder cache about this module
736 mod <- addHomeModuleToFinder hsc_env mod_name location4
738 -- Make the ModSummary to hand to hscMain
740 unused_field = panic "runPhase:ModSummary field"
741 -- Some fields are not looked at by hscMain
742 mod_summary = ModSummary { ms_mod = mod,
743 ms_hsc_src = src_flavour,
744 ms_hspp_file = input_fn,
745 ms_hspp_opts = dflags,
746 ms_hspp_buf = hspp_buf,
747 ms_location = location4,
748 ms_hs_date = src_timestamp,
749 ms_obj_date = Nothing,
751 ms_srcimps = src_imps }
754 mbResult <- hscCompileOneShot hsc_env
755 mod_summary source_unchanged
757 Nothing -- No "module i of n" progress info
760 Nothing -> throwDyn (PhaseFailed "hsc" (ExitFailure 1))
762 -> do SysTools.touch dflags' "Touching object file" o_file
763 -- The .o file must have a later modification date
764 -- than the source file (else we wouldn't be in HscNoRecomp)
765 -- but we touch it anyway, to keep 'make' happy (we think).
766 return (StopLn, dflags', Just location4, o_file)
767 Just (HscRecomp hasStub)
769 do stub_o <- compileStub dflags' mod location4
770 consIORef v_Ld_inputs stub_o
771 -- In the case of hs-boot files, generate a dummy .o-boot
772 -- stamp file for the benefit of Make
773 when (isHsBoot src_flavour) $
774 SysTools.touch dflags' "Touching object file" o_file
775 return (next_phase, dflags', Just location4, output_fn)
777 -----------------------------------------------------------------------------
780 runPhase CmmCpp stop dflags basename suff input_fn get_output_fn maybe_loc
782 output_fn <- get_output_fn dflags Cmm maybe_loc
783 doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
784 return (Cmm, dflags, maybe_loc, output_fn)
786 runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc
788 let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
789 let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
790 output_fn <- get_output_fn dflags next_phase maybe_loc
792 let dflags' = dflags { hscTarget = hsc_lang,
793 hscOutName = output_fn,
794 extCoreName = basename ++ ".hcr" }
796 ok <- hscCmmFile dflags' input_fn
798 when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1))
800 return (next_phase, dflags, maybe_loc, output_fn)
802 -----------------------------------------------------------------------------
805 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
806 -- way too many hacks, and I can't say I've ever used it anyway.
808 runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc
809 | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc
810 = do let cc_opts = getOpts dflags opt_c
811 hcc = cc_phase `eqPhase` HCc
813 let cmdline_include_paths = includePaths dflags
815 -- HC files have the dependent packages stamped into them
816 pkgs <- if hcc then getHCFilePackages input_fn else return []
818 -- add package include paths even if we're just compiling .c
819 -- files; this is the Value Add(TM) that using ghc instead of
821 pkg_include_dirs <- getPackageIncludePath dflags pkgs
822 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
823 (cmdline_include_paths ++ pkg_include_dirs)
825 let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
826 gcc_extra_viac_flags <- getExtraViaCOpts dflags
827 let pic_c_flags = picCCOpts dflags
829 let verb = getVerbFlag dflags
831 pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs
833 let split_objs = dopt Opt_SplitObjs dflags
834 split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
837 let excessPrecision = dopt Opt_ExcessPrecision dflags
839 let cc_opt | optLevel dflags >= 2 = "-O2"
844 let mangle = dopt Opt_DoAsmMangling dflags
846 | hcc && mangle = Mangle
848 output_fn <- get_output_fn dflags next_phase maybe_loc
853 -- on x86 the floating point regs have greater precision
854 -- than a double, which leads to unpredictable results.
855 -- By default, we turn this off with -ffloat-store unless
856 -- the user specified -fexcess-precision.
857 (if excessPrecision then [] else [ "-ffloat-store" ]) ++
859 -- gcc's -fstrict-aliasing allows two accesses to memory
860 -- to be considered non-aliasing if they have different types.
861 -- This interacts badly with the C code we generate, which is
862 -- very weakly typed, being derived from C--.
863 ["-fno-strict-aliasing"]
867 SysTools.runCc dflags (
868 -- force the C compiler to interpret this file as C when
869 -- compiling .hc files, by adding the -x c option.
870 -- Also useful for plain .c files, just in case GHC saw a
872 [ SysTools.Option "-x", if cc_phase `eqPhase` Ccpp
873 then SysTools.Option "c++" else SysTools.Option "c"] ++
874 [ SysTools.FileOption "" input_fn
875 , SysTools.Option "-o"
876 , SysTools.FileOption "" output_fn
878 ++ map SysTools.Option (
881 #ifdef sparc_TARGET_ARCH
882 -- We only support SparcV9 and better because V8 lacks an atomic CAS
883 -- instruction. Note that the user can still override this
884 -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
885 -- regardless of the ordering.
887 -- This is a temporary hack.
895 then gcc_extra_viac_flags
896 else filter (=="-fwrapv")
898 -- still want -fwrapv even for unreg'd
903 ++ [ verb, "-S", "-Wimplicit", cc_opt ]
904 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
911 return (next_phase, dflags, maybe_loc, output_fn)
913 -- ToDo: postprocess the output from gcc
915 -----------------------------------------------------------------------------
918 runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
919 = do let mangler_opts = getOpts dflags opt_m
922 machdep_opts <- return [ show (stolen_x86_regs dflags) ]
924 machdep_opts <- return []
927 let split = dopt Opt_SplitObjs dflags
929 | split = SplitMangle
931 output_fn <- get_output_fn dflags next_phase maybe_loc
933 SysTools.runMangle dflags (map SysTools.Option mangler_opts
934 ++ [ SysTools.FileOption "" input_fn
935 , SysTools.FileOption "" output_fn
937 ++ map SysTools.Option machdep_opts)
939 return (next_phase, dflags, maybe_loc, output_fn)
941 -----------------------------------------------------------------------------
944 runPhase SplitMangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
945 = do -- tmp_pfx is the prefix used for the split .s files
946 -- We also use it as the file to contain the no. of split .s files (sigh)
947 split_s_prefix <- SysTools.newTempName dflags "split"
948 let n_files_fn = split_s_prefix
950 SysTools.runSplit dflags
951 [ SysTools.FileOption "" input_fn
952 , SysTools.FileOption "" split_s_prefix
953 , SysTools.FileOption "" n_files_fn
956 -- Save the number of split files for future references
957 s <- readFile n_files_fn
958 let n_files = read s :: Int
959 writeIORef v_Split_info (split_s_prefix, n_files)
961 -- Remember to delete all these files
962 addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
965 return (SplitAs, dflags, maybe_loc, "**splitmangle**")
966 -- we don't use the filename
968 -----------------------------------------------------------------------------
971 runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc
972 = do let as_opts = getOpts dflags opt_a
973 let cmdline_include_paths = includePaths dflags
975 output_fn <- get_output_fn dflags StopLn maybe_loc
977 -- we create directories for the object file, because it
978 -- might be a hierarchical module.
979 createDirectoryHierarchy (directoryOf output_fn)
981 SysTools.runAs dflags
982 (map SysTools.Option as_opts
983 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
984 #ifdef sparc_TARGET_ARCH
985 -- We only support SparcV9 and better because V8 lacks an atomic CAS
986 -- instruction so we have to make sure that the assembler accepts the
987 -- instruction set. Note that the user can still override this
988 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
989 -- regardless of the ordering.
991 -- This is a temporary hack.
992 ++ [ SysTools.Option "-mcpu=v9" ]
994 ++ [ SysTools.Option "-c"
995 , SysTools.FileOption "" input_fn
996 , SysTools.Option "-o"
997 , SysTools.FileOption "" output_fn
1000 return (StopLn, dflags, maybe_loc, output_fn)
1003 runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc
1005 output_fn <- get_output_fn dflags StopLn maybe_loc
1007 let (base_o, _) = splitFilename output_fn
1008 split_odir = base_o ++ "_split"
1009 osuf = objectSuf dflags
1011 createDirectoryHierarchy split_odir
1013 -- remove M_split/ *.o, because we're going to archive M_split/ *.o
1014 -- later and we don't want to pick up any old objects.
1015 fs <- getDirectoryContents split_odir
1016 mapM_ removeFile $ map (split_odir `joinFileName`)
1017 $ filter (osuf `isSuffixOf`) fs
1019 let as_opts = getOpts dflags opt_a
1021 (split_s_prefix, n) <- readIORef v_Split_info
1023 let split_s n = split_s_prefix ++ "__" ++ show n `joinFileExt` "s"
1024 split_obj n = split_odir `joinFileName`
1025 filenameOf base_o ++ "__" ++ show n
1029 = SysTools.runAs dflags
1030 (map SysTools.Option as_opts ++
1031 [ SysTools.Option "-c"
1032 , SysTools.Option "-o"
1033 , SysTools.FileOption "" (split_obj n)
1034 , SysTools.FileOption "" (split_s n)
1037 mapM_ assemble_file [1..n]
1039 -- and join the split objects into a single object file:
1040 let ld_r args = SysTools.runLink dflags ([
1041 SysTools.Option "-nostdlib",
1042 SysTools.Option "-nodefaultlibs",
1043 SysTools.Option "-Wl,-r",
1044 SysTools.Option ld_x_flag,
1045 SysTools.Option "-o",
1046 SysTools.FileOption "" output_fn ] ++ args)
1047 ld_x_flag | null cLD_X = ""
1048 | otherwise = "-Wl,-x"
1050 if cLdIsGNULd == "YES"
1052 let script = split_odir `joinFileName` "ld.script"
1054 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1055 ld_r [SysTools.FileOption "" script]
1057 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1059 return (StopLn, dflags, maybe_loc, output_fn)
1062 -----------------------------------------------------------------------------
1063 -- MoveBinary sort-of-phase
1064 -- After having produced a binary, move it somewhere else and generate a
1065 -- wrapper script calling the binary. Currently, we need this only in
1066 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
1067 -- central directory.
1068 -- This is called from linkBinary below, after linking. I haven't made it
1069 -- a separate phase to minimise interfering with other modules, and
1070 -- we don't need the generality of a phase (MoveBinary is always
1071 -- done after linking and makes only sense in a parallel setup) -- HWL
1073 runPhase_MoveBinary dflags input_fn
1075 let sysMan = pgm_sysman dflags
1076 pvm_root <- getEnv "PVM_ROOT"
1077 pvm_arch <- getEnv "PVM_ARCH"
1079 pvm_executable_base = "=" ++ input_fn
1080 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1081 -- nuke old binary; maybe use configur'ed names for cp and rm?
1082 Panic.try (removeFile pvm_executable)
1083 -- move the newly created binary into PVM land
1084 copy dflags "copying PVM executable" input_fn pvm_executable
1085 -- generate a wrapper script for running a parallel prg under PVM
1086 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1089 -- generates a Perl skript starting a parallel prg under PVM
1090 mk_pvm_wrapper_script :: String -> String -> String -> String
1091 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1093 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1094 " if $running_under_some_shell;",
1095 "# =!=!=!=!=!=!=!=!=!=!=!",
1096 "# This script is automatically generated: DO NOT EDIT!!!",
1097 "# Generated by Glasgow Haskell Compiler",
1098 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1100 "$pvm_executable = '" ++ pvm_executable ++ "';",
1101 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1102 "$SysMan = '" ++ sysMan ++ "';",
1104 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1105 "# first, some magical shortcuts to run "commands" on the binary",
1106 "# (which is hidden)",
1107 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1108 " local($cmd) = $1;",
1109 " system("$cmd $pvm_executable");",
1110 " exit(0); # all done",
1113 "# Now, run the real binary; process the args first",
1114 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1116 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1117 "@nonPVM_args = ();",
1118 "$in_RTS_args = 0;",
1120 "args: while ($a = shift(@ARGV)) {",
1121 " if ( $a eq '+RTS' ) {",
1122 " $in_RTS_args = 1;",
1123 " } elsif ( $a eq '-RTS' ) {",
1124 " $in_RTS_args = 0;",
1126 " if ( $a eq '-d' && $in_RTS_args ) {",
1128 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1129 " $nprocessors = $1;",
1130 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1131 " $nprocessors = $1;",
1133 " push(@nonPVM_args, $a);",
1137 "local($return_val) = 0;",
1138 "# Start the parallel execution by calling SysMan",
1139 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1140 "$return_val = $?;",
1141 "# ToDo: fix race condition moving files and flushing them!!",
1142 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1143 "exit($return_val);"
1146 -----------------------------------------------------------------------------
1147 -- Complain about non-dynamic flags in OPTIONS pragmas
1149 checkProcessArgsResult flags filename
1150 = do when (notNull flags) (throwDyn (ProgramError (
1151 showSDoc (hang (text filename <> char ':')
1152 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
1153 hsep (map text flags)))
1156 -----------------------------------------------------------------------------
1157 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1159 getHCFilePackages :: FilePath -> IO [PackageId]
1160 getHCFilePackages filename =
1161 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1164 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1165 return (map stringToPackageId (words rest))
1169 -----------------------------------------------------------------------------
1170 -- Static linking, of .o files
1172 -- The list of packages passed to link is the list of packages on
1173 -- which this program depends, as discovered by the compilation
1174 -- manager. It is combined with the list of packages that the user
1175 -- specifies on the command line with -package flags.
1177 -- In one-shot linking mode, we can't discover the package
1178 -- dependencies (because we haven't actually done any compilation or
1179 -- read any interface files), so the user must explicitly specify all
1182 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1183 linkBinary dflags o_files dep_packages = do
1184 let verb = getVerbFlag dflags
1185 output_fn = exeFileName dflags
1187 -- get the full list of packages to link with, by combining the
1188 -- explicit packages with the auto packages and all of their
1189 -- dependencies, and eliminating duplicates.
1191 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1192 let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
1193 get_pkg_lib_path_opts l | opt_HardwireLibPaths && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1194 | otherwise = ["-L" ++ l]
1196 let lib_paths = libraryPaths dflags
1197 let lib_path_opts = map ("-L"++) lib_paths
1199 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1201 #ifdef darwin_TARGET_OS
1202 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1203 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1205 let framework_paths = frameworkPaths dflags
1206 framework_path_opts = map ("-F"++) framework_paths
1208 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1209 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1211 let frameworks = cmdlineFrameworks dflags
1212 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1213 -- reverse because they're added in reverse order from the cmd line
1216 -- probably _stub.o files
1217 extra_ld_inputs <- readIORef v_Ld_inputs
1219 -- opts from -optl-<blah> (including -l<blah> options)
1220 let extra_ld_opts = getOpts dflags opt_l
1222 let ways = wayNames dflags
1224 -- Here are some libs that need to be linked at the *end* of
1225 -- the command line, because they contain symbols that are referred to
1226 -- by the RTS. We can't therefore use the ordinary way opts for these.
1228 debug_opts | WayDebug `elem` ways = [
1229 #if defined(HAVE_LIBBFD)
1236 thread_opts | WayThreaded `elem` ways = [
1237 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1240 #if defined(osf3_TARGET_OS)
1246 rc_objs <- maybeCreateManifest dflags output_fn
1248 let (md_c_flags, _) = machdepCCOpts dflags
1249 SysTools.runLink dflags (
1250 [ SysTools.Option verb
1251 , SysTools.Option "-o"
1252 , SysTools.FileOption "" output_fn
1254 ++ map SysTools.Option (
1261 #ifdef darwin_TARGET_OS
1262 ++ framework_path_opts
1265 ++ pkg_lib_path_opts
1267 #ifdef darwin_TARGET_OS
1268 ++ pkg_framework_path_opts
1269 ++ pkg_framework_opts
1275 -- parallel only: move binary to another dir -- HWL
1276 when (WayPar `elem` ways)
1277 (do success <- runPhase_MoveBinary dflags output_fn
1278 if success then return ()
1279 else throwDyn (InstallationError ("cannot move binary to PVM dir")))
1282 exeFileName :: DynFlags -> FilePath
1284 | Just s <- outputFile dflags =
1285 #if defined(mingw32_HOST_OS)
1286 if null (suffixOf s)
1287 then s `joinFileExt` "exe"
1293 #if defined(mingw32_HOST_OS)
1301 -> FilePath -- filename of executable
1302 -> IO [FilePath] -- extra objects to embed, maybe
1303 maybeCreateManifest dflags exe_filename = do
1304 #ifndef mingw32_TARGET_OS
1307 if not (dopt Opt_GenManifest dflags) then return [] else do
1309 let manifest_filename = exe_filename `joinFileExt` "manifest"
1311 writeFile manifest_filename $
1312 "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"++
1313 " <assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestVersion=\"1.0\">\n"++
1314 " <assemblyIdentity version=\"1.0.0.0\"\n"++
1315 " processorArchitecture=\"X86\"\n"++
1316 " name=\"" ++ basenameOf exe_filename ++ "\"\n"++
1317 " type=\"win32\"/>\n\n"++
1318 " <trustInfo xmlns=\"urn:schemas-microsoft-com:asm.v3\">\n"++
1320 " <requestedPrivileges>\n"++
1321 " <requestedExecutionLevel level=\"asInvoker\" uiAccess=\"false\"/>\n"++
1322 " </requestedPrivileges>\n"++
1327 -- Windows will fine the manifest file if it is named foo.exe.manifest.
1328 -- However, for extra robustness, and so that we can move the binary around,
1329 -- we can embed the manifest in the binary itself using windres:
1330 if not (dopt Opt_EmbedManifest dflags) then return [] else do
1332 rc_filename <- newTempName dflags "rc"
1333 rc_obj_filename <- newTempName dflags (objectSuf dflags)
1335 writeFile rc_filename $
1336 "1 24 MOVEABLE PURE " ++ show manifest_filename ++ "\n"
1337 -- magic numbers :-)
1338 -- show is a bit hackish above, but we need to esacpe the
1339 -- backslashes in the path.
1341 let wr_opts = getOpts dflags opt_windres
1342 runWindres dflags $ map SysTools.Option $
1343 ["--input="++rc_filename,
1344 "--output="++rc_obj_filename,
1345 "--output-format=coff"]
1347 -- no FileOptions here: windres doesn't like seeing
1348 -- backslashes, apparently
1350 return [rc_obj_filename]
1354 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1355 linkDynLib dflags o_files dep_packages = do
1356 let verb = getVerbFlag dflags
1357 let static = opt_Static
1358 let no_hs_main = dopt Opt_NoHsMain dflags
1359 let o_file = outputFile dflags
1361 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1362 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1364 let lib_paths = libraryPaths dflags
1365 let lib_path_opts = map ("-L"++) lib_paths
1367 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1369 -- probably _stub.o files
1370 extra_ld_inputs <- readIORef v_Ld_inputs
1372 let (md_c_flags, _) = machdepCCOpts dflags
1373 let extra_ld_opts = getOpts dflags opt_l
1374 #if defined(mingw32_HOST_OS)
1375 -----------------------------------------------------------------------------
1377 -----------------------------------------------------------------------------
1378 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1380 SysTools.runLink dflags
1381 ([ SysTools.Option verb
1382 , SysTools.Option "-o"
1383 , SysTools.FileOption "" output_fn
1384 , SysTools.Option "-shared"
1385 , SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
1387 ++ map (SysTools.FileOption "") o_files
1388 ++ map SysTools.Option (
1393 ++ pkg_lib_path_opts
1396 #elif defined(darwin_TARGET_OS)
1397 -----------------------------------------------------------------------------
1398 -- Making a darwin dylib
1399 -----------------------------------------------------------------------------
1400 -- About the options used for Darwin:
1402 -- Apple's way of saying -shared
1403 -- -undefined dynamic_lookup:
1404 -- Without these options, we'd have to specify the correct dependencies
1405 -- for each of the dylibs. Note that we could (and should) do without this
1406 -- for all libraries except the RTS; all we need to do is to pass the
1407 -- correct HSfoo_dyn.dylib files to the link command.
1408 -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
1409 -- -flat_namespace -undefined suppress, which works on earlier versions,
1410 -- but it has other disadvantages.
1412 -- Build the dynamic library as a single "module", i.e. no dynamic binding
1413 -- nonsense when referring to symbols from within the library. The NCG
1414 -- assumes that this option is specified (on i386, at least).
1415 -- -Wl,-macosx_version_min -Wl,10.3
1416 -- Tell the linker its safe to assume that the library will run on 10.3 or
1417 -- later, so that it will not complain about the use of the option
1418 -- -undefined dynamic_lookup above.
1420 -- Causes the dynamic linker to ignore the DYLD_LIBRARY_PATH when loading
1421 -- this lib and instead look for it at its absolute path.
1422 -- When installing the .dylibs (see target.mk), we'll change that path to
1423 -- point to the place they are installed. Therefore, we won't have to set
1424 -- up DYLD_LIBRARY_PATH specifically for ghc.
1425 -----------------------------------------------------------------------------
1427 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1429 pwd <- getCurrentDirectory
1430 SysTools.runLink dflags
1431 ([ SysTools.Option verb
1432 , SysTools.Option "-dynamiclib"
1433 , SysTools.Option "-o"
1434 , SysTools.FileOption "" output_fn
1436 ++ map SysTools.Option (
1439 ++ [ "-undefined", "dynamic_lookup", "-single_module", "-Wl,-macosx_version_min","-Wl,10.3", "-install_name " ++ (pwd `joinFileName` output_fn) ]
1443 ++ pkg_lib_path_opts
1447 -----------------------------------------------------------------------------
1449 -----------------------------------------------------------------------------
1451 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1453 SysTools.runLink dflags
1454 ([ SysTools.Option verb
1455 , SysTools.Option "-o"
1456 , SysTools.FileOption "" output_fn
1458 ++ map SysTools.Option (
1461 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1465 ++ pkg_lib_path_opts
1469 -- -----------------------------------------------------------------------------
1472 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1473 doCpp dflags raw include_cc_opts input_fn output_fn = do
1474 let hscpp_opts = getOpts dflags opt_P
1475 let cmdline_include_paths = includePaths dflags
1477 pkg_include_dirs <- getPackageIncludePath dflags []
1478 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1479 (cmdline_include_paths ++ pkg_include_dirs)
1481 let verb = getVerbFlag dflags
1484 | not include_cc_opts = []
1485 | otherwise = (optc ++ md_c_flags)
1487 optc = getOpts dflags opt_c
1488 (md_c_flags, _) = machdepCCOpts dflags
1490 let cpp_prog args | raw = SysTools.runCpp dflags args
1491 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1494 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1495 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1496 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1497 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1498 -- remember, in code we *compile*, the HOST is the same our TARGET,
1499 -- and BUILD is the same as our HOST.
1501 cpp_prog ([SysTools.Option verb]
1502 ++ map SysTools.Option include_paths
1503 ++ map SysTools.Option hsSourceCppOpts
1504 ++ map SysTools.Option hscpp_opts
1505 ++ map SysTools.Option cc_opts
1506 ++ map SysTools.Option target_defs
1507 ++ [ SysTools.Option "-x"
1508 , SysTools.Option "c"
1509 , SysTools.Option input_fn
1510 -- We hackily use Option instead of FileOption here, so that the file
1511 -- name is not back-slashed on Windows. cpp is capable of
1512 -- dealing with / in filenames, so it works fine. Furthermore
1513 -- if we put in backslashes, cpp outputs #line directives
1514 -- with *double* backslashes. And that in turn means that
1515 -- our error messages get double backslashes in them.
1516 -- In due course we should arrange that the lexer deals
1517 -- with these \\ escapes properly.
1518 , SysTools.Option "-o"
1519 , SysTools.FileOption "" output_fn
1522 cHaskell1Version = "5" -- i.e., Haskell 98
1524 -- Default CPP defines in Haskell source
1526 [ "-D__HASKELL1__="++cHaskell1Version
1527 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1529 , "-D__CONCURRENT_HASKELL__"
1533 -- -----------------------------------------------------------------------------
1536 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1537 hscNextPhase dflags HsBootFile hsc_lang = StopLn
1538 hscNextPhase dflags other hsc_lang =
1541 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1543 HscNothing -> StopLn
1544 HscInterpreted -> StopLn
1548 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1549 hscMaybeAdjustTarget dflags stop other current_hsc_lang
1552 keep_hc = dopt Opt_KeepHcFiles dflags
1554 -- don't change the lang if we're interpreting
1555 | current_hsc_lang == HscInterpreted = current_hsc_lang
1557 -- force -fvia-C if we are being asked for a .hc file
1558 | HCc <- stop = HscC
1560 -- otherwise, stick to the plan
1561 | otherwise = current_hsc_lang
1563 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
1564 -- The split prefix and number of files