1 -----------------------------------------------------------------------------
5 -- (c) The University of Glasgow 2005
7 -----------------------------------------------------------------------------
9 module DriverPipeline (
10 -- Run a series of compilation steps in a pipeline, for a
11 -- collection of source files.
14 -- Interfaces for the batch-mode driver
17 -- Interfaces for the compilation manager (interpreted/batch-mode)
24 #include "HsVersions.h"
35 import UniqFM ( eltsUFM )
38 import StaticFlags ( v_Ld_inputs, opt_Static, opt_HardwireLibPaths, WayName(..) )
42 import StringBuffer ( hGetStringBuffer )
43 import BasicTypes ( SuccessFlag(..) )
44 import Maybes ( expectJust )
45 import ParserCoreUtils ( getCoreModuleName )
46 import SrcLoc ( unLoc )
47 import SrcLoc ( Located(..) )
49 import Control.Exception as Exception
50 import Data.IORef ( readIORef, writeIORef, IORef )
51 import GHC.Exts ( Int(..) )
52 import System.Directory
53 import System.FilePath
55 import SYSTEM_IO_ERROR as IO
57 import Data.List ( isSuffixOf )
60 import System.Environment
62 -- ---------------------------------------------------------------------------
65 -- Just preprocess a file, put the result in a temp. file (used by the
66 -- compilation manager during the summary phase).
68 -- We return the augmented DynFlags, because they contain the result
69 -- of slurping in the OPTIONS pragmas
71 preprocess :: DynFlags -> (FilePath, Maybe Phase) -> IO (DynFlags, FilePath)
72 preprocess dflags (filename, mb_phase) =
73 ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
74 runPipeline anyHsc dflags (filename, mb_phase)
75 Nothing Temporary Nothing{-no ModLocation-}
77 -- ---------------------------------------------------------------------------
80 -- Compile a single module, under the control of the compilation manager.
82 -- This is the interface between the compilation manager and the
83 -- compiler proper (hsc), where we deal with tedious details like
84 -- reading the OPTIONS pragma from the source file, and passing the
85 -- output of hsc through the C compiler.
87 -- NB. No old interface can also mean that the source has changed.
90 -> ModSummary -- summary for module being compiled
91 -> Int -> Int -- module N of M
92 -> Maybe ModIface -- old interface, if we have one
93 -> Maybe Linkable -- old linkable, if we have one
94 -> IO (Maybe HomeModInfo) -- the complete HomeModInfo, if successful
96 compile hsc_env summary mod_index nmods mb_old_iface maybe_old_linkable
98 let dflags0 = ms_hspp_opts summary
99 this_mod = ms_mod summary
100 src_flavour = ms_hsc_src summary
101 location = ms_location summary
102 input_fn = expectJust "compile:hs" (ml_hs_file location)
103 input_fnpp = ms_hspp_file summary
105 debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
107 let basename = dropExtension input_fn
109 -- We add the directory in which the .hs files resides) to the import path.
110 -- This is needed when we try to compile the .hc file later, if it
111 -- imports a _stub.h file that we created here.
112 let current_dir = case takeDirectory basename of
113 "" -> "." -- XXX Hack
115 old_paths = includePaths dflags0
116 dflags = dflags0 { includePaths = current_dir : old_paths }
118 -- Figure out what lang we're generating
119 let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
120 -- ... and what the next phase should be
121 let next_phase = hscNextPhase dflags src_flavour hsc_lang
122 -- ... and what file to generate the output into
123 output_fn <- getOutputFilename next_phase
124 Temporary basename dflags next_phase (Just location)
126 let dflags' = dflags { hscTarget = hsc_lang,
127 hscOutName = output_fn,
128 extCoreName = basename ++ ".hcr" }
130 -- -no-recomp should also work with --make
131 let force_recomp = dopt Opt_ForceRecomp dflags
132 source_unchanged = isJust maybe_old_linkable && not force_recomp
133 hsc_env' = hsc_env { hsc_dflags = dflags' }
134 object_filename = ml_obj_file location
136 let getStubLinkable False = return []
138 = do stub_o <- compileStub dflags' this_mod location
139 return [ DotO stub_o ]
141 handleBatch HscNoRecomp
142 = ASSERT (isJust maybe_old_linkable)
143 return maybe_old_linkable
145 handleBatch (HscRecomp hasStub)
146 | isHsBoot src_flavour
147 = do when (isObjectTarget hsc_lang) $ -- interpreted reaches here too
148 SysTools.touch dflags' "Touching object file"
150 return maybe_old_linkable
153 = do stub_unlinked <- getStubLinkable hasStub
154 (hs_unlinked, unlinked_time) <-
157 -> return ([], ms_hs_date summary)
158 -- We're in --make mode: finish the compilation pipeline.
160 -> do runPipeline StopLn dflags (output_fn,Nothing)
164 -- The object filename comes from the ModLocation
165 o_time <- getModificationTime object_filename
166 return ([DotO object_filename], o_time)
167 let linkable = LM unlinked_time this_mod
168 (hs_unlinked ++ stub_unlinked)
169 return (Just linkable)
171 handleInterpreted InteractiveNoRecomp
172 = ASSERT (isJust maybe_old_linkable)
173 return maybe_old_linkable
174 handleInterpreted (InteractiveRecomp hasStub comp_bc modBreaks)
175 = do stub_unlinked <- getStubLinkable hasStub
176 let hs_unlinked = [BCOs comp_bc modBreaks]
177 unlinked_time = ms_hs_date summary
178 -- Why do we use the timestamp of the source file here,
179 -- rather than the current time? This works better in
180 -- the case where the local clock is out of sync
181 -- with the filesystem's clock. It's just as accurate:
182 -- if the source is modified, then the linkable will
184 let linkable = LM unlinked_time this_mod
185 (hs_unlinked ++ stub_unlinked)
186 return (Just linkable)
188 let -- runCompiler :: Compiler result -> (result -> Maybe Linkable)
189 -- -> IO (Maybe HomeModInfo)
190 runCompiler compiler handle
191 = do mbResult <- compiler hsc_env' summary source_unchanged mb_old_iface
192 (Just (mod_index, nmods))
194 Nothing -> return Nothing
195 Just (result, iface, details) -> do
196 linkable <- handle result
197 return (Just HomeModInfo{ hm_details = details,
199 hm_linkable = linkable })
203 | isHsBoot src_flavour ->
204 runCompiler hscCompileNothing handleBatch
206 runCompiler hscCompileInteractive handleInterpreted
208 runCompiler hscCompileNothing handleBatch
210 runCompiler hscCompileBatch handleBatch
212 -----------------------------------------------------------------------------
213 -- stub .h and .c files (for foreign export support)
215 -- The _stub.c file is derived from the haskell source file, possibly taking
216 -- into account the -stubdir option.
218 -- Consequently, we derive the _stub.o filename from the haskell object
221 -- This isn't necessarily the same as the object filename we
222 -- would get if we just compiled the _stub.c file using the pipeline.
225 -- ghc src/A.hs -odir obj
227 -- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
228 -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
231 compileStub :: DynFlags -> Module -> ModLocation -> IO FilePath
232 compileStub dflags mod location = do
233 let (o_base, o_ext) = splitExtension (ml_obj_file location)
234 stub_o = (o_base ++ "_stub") <.> o_ext
236 -- compile the _stub.c file w/ gcc
237 let (stub_c,_,_) = mkStubPaths dflags (moduleName mod) location
238 runPipeline StopLn dflags (stub_c,Nothing) Nothing
239 (SpecificFile stub_o) Nothing{-no ModLocation-}
244 -- ---------------------------------------------------------------------------
247 link :: GhcLink -- interactive or batch
248 -> DynFlags -- dynamic flags
249 -> Bool -- attempt linking in batch mode?
250 -> HomePackageTable -- what to link
253 -- For the moment, in the batch linker, we don't bother to tell doLink
254 -- which packages to link -- it just tries all that are available.
255 -- batch_attempt_linking should only be *looked at* in batch mode. It
256 -- should only be True if the upsweep was successful and someone
257 -- exports main, i.e., we have good reason to believe that linking
261 link LinkInMemory _ _ _
262 = do -- Not Linking...(demand linker will do the job)
269 link LinkBinary dflags batch_attempt_linking hpt
270 | batch_attempt_linking
273 home_mod_infos = eltsUFM hpt
275 -- the packages we depend on
276 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
278 -- the linkables to link
279 linkables = map (expectJust "link".hm_linkable) home_mod_infos
281 debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
283 -- check for the -no-link flag
284 if isNoLink (ghcLink dflags)
285 then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
289 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
290 obj_files = concatMap getOfiles linkables
292 exe_file = exeFileName dflags
294 -- if the modification time on the executable is later than the
295 -- modification times on all of the objects, then omit linking
296 -- (unless the -no-recomp flag was given).
297 e_exe_time <- IO.try $ getModificationTime exe_file
298 extra_ld_inputs <- readIORef v_Ld_inputs
299 extra_times <- mapM (IO.try . getModificationTime) extra_ld_inputs
300 let other_times = map linkableTime linkables
301 ++ [ t' | Right t' <- extra_times ]
302 linking_needed = case e_exe_time of
304 Right t -> any (t <) other_times
306 if not (dopt Opt_ForceRecomp dflags) && not linking_needed
307 then do debugTraceMsg dflags 2 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
311 debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
314 -- Don't showPass in Batch mode; doLink will do that for us.
315 let link = case ghcLink dflags of
316 LinkBinary -> linkBinary
317 LinkDynLib -> linkDynLib
318 other -> panicBadLink other
319 link dflags obj_files pkg_deps
321 debugTraceMsg dflags 3 (text "link: done")
323 -- linkBinary only returns if it succeeds
327 = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
328 text " Main.main not exported; not linking.")
331 -- warning suppression
332 link other _ _ _ = panicBadLink other
334 panicBadLink :: GhcLink -> a
335 panicBadLink other = panic ("link: GHC not built to link this way: " ++
337 -- -----------------------------------------------------------------------------
338 -- Compile files in one-shot mode.
340 oneShot :: DynFlags -> Phase -> [(String, Maybe Phase)] -> IO ()
341 oneShot dflags stop_phase srcs = do
342 o_files <- mapM (compileFile dflags stop_phase) srcs
343 doLink dflags stop_phase o_files
345 compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
346 compileFile dflags stop_phase (src, mb_phase) = do
347 exists <- doesFileExist src
349 throwDyn (CmdLineError ("does not exist: " ++ src))
352 split = dopt Opt_SplitObjs dflags
353 mb_o_file = outputFile dflags
354 ghc_link = ghcLink dflags -- Set by -c or -no-link
356 -- When linking, the -o argument refers to the linker's output.
357 -- otherwise, we use it as the name for the pipeline's output.
359 | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent
360 -- -o foo applies to linker
361 | Just o_file <- mb_o_file = SpecificFile o_file
362 -- -o foo applies to the file we are compiling now
363 | otherwise = Persistent
365 stop_phase' = case stop_phase of
366 As | split -> SplitAs
369 (_, out_file) <- runPipeline stop_phase' dflags
370 (src, mb_phase) Nothing output
371 Nothing{-no ModLocation-}
375 doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
376 doLink dflags stop_phase o_files
377 | not (isStopLn stop_phase)
378 = return () -- We stopped before the linking phase
381 = case ghcLink dflags of
383 LinkBinary -> linkBinary dflags o_files link_pkgs
384 LinkDynLib -> linkDynLib dflags o_files []
385 other -> panicBadLink other
387 -- Always link in the haskell98 package for static linking. Other
388 -- packages have to be specified via the -package flag.
389 link_pkgs = [haskell98PackageId]
392 -- ---------------------------------------------------------------------------
393 -- Run a compilation pipeline, consisting of multiple phases.
395 -- This is the interface to the compilation pipeline, which runs
396 -- a series of compilation steps on a single source file, specifying
397 -- at which stage to stop.
399 -- The DynFlags can be modified by phases in the pipeline (eg. by
400 -- GHC_OPTIONS pragmas), and the changes affect later phases in the
405 -- output should be to a temporary file: we're going to
406 -- run more compilation steps on this output later
408 -- we want a persistent file, i.e. a file in the current directory
409 -- derived from the input filename, but with the appropriate extension.
410 -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
411 | SpecificFile FilePath
412 -- the output must go into the specified file.
415 :: Phase -- When to stop
416 -> DynFlags -- Dynamic flags
417 -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
418 -> Maybe FilePath -- original basename (if different from ^^^)
419 -> PipelineOutput -- Output filename
420 -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
421 -> IO (DynFlags, FilePath) -- (final flags, output filename)
423 runPipeline stop_phase dflags0 (input_fn, mb_phase) mb_basename output maybe_loc
426 (input_basename, suffix) = splitExtension input_fn
427 suffix' = drop 1 suffix -- strip off the .
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 <.> suffix
548 | Just loc <- maybe_location = ml_obj_file loc
549 | Just d <- odir = d </> 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 <.> 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 <.> 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 = case takeDirectory basename of
650 "" -> "." -- XXX Hack
653 paths = includePaths dflags0
654 dflags = dflags0 { includePaths = current_dir : paths }
656 -- gather the imports and module name
657 (hspp_buf,mod_name,imps,src_imps) <-
659 ExtCoreFile -> do { -- no explicit imports in ExtCore input.
660 ; m <- getCoreModuleName input_fn
661 ; return (Nothing, mkModuleName m, [], []) }
663 _ -> do { buf <- hGetStringBuffer input_fn
664 ; (src_imps,imps,L _ mod_name) <- getImports dflags buf input_fn (basename <.> suff)
665 ; return (Just buf, mod_name, imps, src_imps) }
667 -- Build a ModLocation to pass to hscMain.
668 -- The source filename is rather irrelevant by now, but it's used
669 -- by hscMain for messages. hscMain also needs
670 -- the .hi and .o filenames, and this is as good a way
671 -- as any to generate them, and better than most. (e.g. takes
672 -- into accout the -osuf flags)
673 location1 <- mkHomeModLocation2 dflags mod_name basename suff
675 -- Boot-ify it if necessary
676 let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
677 | otherwise = location1
680 -- Take -ohi into account if present
681 -- This can't be done in mkHomeModuleLocation because
682 -- it only applies to the module being compiles
683 let ohi = outputHi dflags
684 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
685 | otherwise = location2
687 -- Take -o into account if present
688 -- Very like -ohi, but we must *only* do this if we aren't linking
689 -- (If we're linking then the -o applies to the linked thing, not to
690 -- the object file for one module.)
691 -- Note the nasty duplication with the same computation in compileFile above
692 let expl_o_file = outputFile dflags
693 location4 | Just ofile <- expl_o_file
694 , isNoLink (ghcLink dflags)
695 = location3 { ml_obj_file = ofile }
696 | otherwise = location3
698 o_file = ml_obj_file location4 -- The real object file
701 -- Figure out if the source has changed, for recompilation avoidance.
703 -- Setting source_unchanged to True means that M.o seems
704 -- to be up to date wrt M.hs; so no need to recompile unless imports have
705 -- changed (which the compiler itself figures out).
706 -- Setting source_unchanged to False tells the compiler that M.o is out of
707 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
708 src_timestamp <- getModificationTime (basename <.> suff)
710 let force_recomp = dopt Opt_ForceRecomp dflags
712 if force_recomp || not (isStopLn stop)
713 -- Set source_unchanged to False unconditionally if
714 -- (a) recompilation checker is off, or
715 -- (b) we aren't going all the way to .o file (e.g. ghc -S)
717 -- Otherwise look at file modification dates
718 else do o_file_exists <- doesFileExist o_file
720 then return False -- Need to recompile
721 else do t2 <- getModificationTime o_file
722 if t2 > src_timestamp
727 let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
728 let next_phase = hscNextPhase dflags src_flavour hsc_lang
729 output_fn <- get_output_fn dflags next_phase (Just location4)
731 let dflags' = dflags { hscTarget = hsc_lang,
732 hscOutName = output_fn,
733 extCoreName = basename ++ ".hcr" }
735 hsc_env <- newHscEnv dflags'
737 -- Tell the finder cache about this module
738 mod <- addHomeModuleToFinder hsc_env mod_name location4
740 -- Make the ModSummary to hand to 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 _ 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 cc_opt | optLevel dflags >= 2 = "-O2"
842 let mangle = dopt Opt_DoAsmMangling dflags
844 | hcc && mangle = Mangle
846 output_fn <- get_output_fn dflags next_phase maybe_loc
851 -- on x86 the floating point regs have greater precision
852 -- than a double, which leads to unpredictable results.
853 -- By default, we turn this off with -ffloat-store unless
854 -- the user specified -fexcess-precision.
855 (if dopt Opt_ExcessPrecision dflags
857 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 (takeDirectory 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 = dropExtension 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 </>) $ filter (osuf `isSuffixOf`) fs
1018 let as_opts = getOpts dflags opt_a
1020 (split_s_prefix, n) <- readIORef v_Split_info
1022 let split_s n = split_s_prefix ++ "__" ++ show n <.> "s"
1023 split_obj n = split_odir </>
1024 takeFileName base_o ++ "__" ++ show n <.> osuf
1027 = SysTools.runAs dflags
1028 (map SysTools.Option as_opts ++
1029 [ SysTools.Option "-c"
1030 , SysTools.Option "-o"
1031 , SysTools.FileOption "" (split_obj n)
1032 , SysTools.FileOption "" (split_s n)
1035 mapM_ assemble_file [1..n]
1037 -- and join the split objects into a single object file:
1038 let ld_r args = SysTools.runLink dflags ([
1039 SysTools.Option "-nostdlib",
1040 SysTools.Option "-nodefaultlibs",
1041 SysTools.Option "-Wl,-r",
1042 SysTools.Option ld_x_flag,
1043 SysTools.Option "-o",
1044 SysTools.FileOption "" output_fn ] ++ args)
1045 ld_x_flag | null cLD_X = ""
1046 | otherwise = "-Wl,-x"
1048 if cLdIsGNULd == "YES"
1050 let script = split_odir </> "ld.script"
1052 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1053 ld_r [SysTools.FileOption "" script]
1055 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1057 return (StopLn, dflags, maybe_loc, output_fn)
1059 -- warning suppression
1060 runPhase other _stop _dflags _basename _suff _input_fn _get_output_fn _maybe_loc =
1061 panic ("runPhase: don't know how to run phase " ++ show other)
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 :: DynFlags -> FilePath -> IO Bool
1074 runPhase_MoveBinary dflags input_fn
1076 let sysMan = pgm_sysman dflags
1077 pvm_root <- getEnv "PVM_ROOT"
1078 pvm_arch <- getEnv "PVM_ARCH"
1080 pvm_executable_base = "=" ++ input_fn
1081 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1082 -- nuke old binary; maybe use configur'ed names for cp and rm?
1083 Panic.try (removeFile pvm_executable)
1084 -- move the newly created binary into PVM land
1085 copy dflags "copying PVM executable" input_fn pvm_executable
1086 -- generate a wrapper script for running a parallel prg under PVM
1087 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1090 -- generates a Perl skript starting a parallel prg under PVM
1091 mk_pvm_wrapper_script :: String -> String -> String -> String
1092 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1094 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1095 " if $running_under_some_shell;",
1096 "# =!=!=!=!=!=!=!=!=!=!=!",
1097 "# This script is automatically generated: DO NOT EDIT!!!",
1098 "# Generated by Glasgow Haskell Compiler",
1099 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1101 "$pvm_executable = '" ++ pvm_executable ++ "';",
1102 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1103 "$SysMan = '" ++ sysMan ++ "';",
1105 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1106 "# first, some magical shortcuts to run "commands" on the binary",
1107 "# (which is hidden)",
1108 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1109 " local($cmd) = $1;",
1110 " system("$cmd $pvm_executable");",
1111 " exit(0); # all done",
1114 "# Now, run the real binary; process the args first",
1115 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1117 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1118 "@nonPVM_args = ();",
1119 "$in_RTS_args = 0;",
1121 "args: while ($a = shift(@ARGV)) {",
1122 " if ( $a eq '+RTS' ) {",
1123 " $in_RTS_args = 1;",
1124 " } elsif ( $a eq '-RTS' ) {",
1125 " $in_RTS_args = 0;",
1127 " if ( $a eq '-d' && $in_RTS_args ) {",
1129 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1130 " $nprocessors = $1;",
1131 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1132 " $nprocessors = $1;",
1134 " push(@nonPVM_args, $a);",
1138 "local($return_val) = 0;",
1139 "# Start the parallel execution by calling SysMan",
1140 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1141 "$return_val = $?;",
1142 "# ToDo: fix race condition moving files and flushing them!!",
1143 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1144 "exit($return_val);"
1147 -----------------------------------------------------------------------------
1148 -- Complain about non-dynamic flags in OPTIONS pragmas
1150 checkProcessArgsResult :: [String] -> FilePath -> IO ()
1151 checkProcessArgsResult flags filename
1152 = do when (notNull flags) (throwDyn (ProgramError (
1153 showSDoc (hang (text filename <> char ':')
1154 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
1155 hsep (map text flags)))
1158 -----------------------------------------------------------------------------
1159 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1161 getHCFilePackages :: FilePath -> IO [PackageId]
1162 getHCFilePackages filename =
1163 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1166 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1167 return (map stringToPackageId (words rest))
1171 -----------------------------------------------------------------------------
1172 -- Static linking, of .o files
1174 -- The list of packages passed to link is the list of packages on
1175 -- which this program depends, as discovered by the compilation
1176 -- manager. It is combined with the list of packages that the user
1177 -- specifies on the command line with -package flags.
1179 -- In one-shot linking mode, we can't discover the package
1180 -- dependencies (because we haven't actually done any compilation or
1181 -- read any interface files), so the user must explicitly specify all
1184 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1185 linkBinary dflags o_files dep_packages = do
1186 let verb = getVerbFlag dflags
1187 output_fn = exeFileName dflags
1189 -- get the full list of packages to link with, by combining the
1190 -- explicit packages with the auto packages and all of their
1191 -- dependencies, and eliminating duplicates.
1193 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1194 let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
1195 get_pkg_lib_path_opts l | opt_HardwireLibPaths && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1196 | otherwise = ["-L" ++ l]
1198 let lib_paths = libraryPaths dflags
1199 let lib_path_opts = map ("-L"++) lib_paths
1201 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1203 #ifdef darwin_TARGET_OS
1204 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1205 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1207 let framework_paths = frameworkPaths dflags
1208 framework_path_opts = map ("-F"++) framework_paths
1210 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1211 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1213 let frameworks = cmdlineFrameworks dflags
1214 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1215 -- reverse because they're added in reverse order from the cmd line
1218 -- probably _stub.o files
1219 extra_ld_inputs <- readIORef v_Ld_inputs
1221 -- opts from -optl-<blah> (including -l<blah> options)
1222 let extra_ld_opts = getOpts dflags opt_l
1224 let ways = wayNames dflags
1226 -- Here are some libs that need to be linked at the *end* of
1227 -- the command line, because they contain symbols that are referred to
1228 -- by the RTS. We can't therefore use the ordinary way opts for these.
1230 debug_opts | WayDebug `elem` ways = [
1231 #if defined(HAVE_LIBBFD)
1238 thread_opts | WayThreaded `elem` ways = [
1239 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1242 #if defined(osf3_TARGET_OS)
1248 rc_objs <- maybeCreateManifest dflags output_fn
1250 let (md_c_flags, _) = machdepCCOpts dflags
1251 SysTools.runLink dflags (
1252 [ SysTools.Option verb
1253 , SysTools.Option "-o"
1254 , SysTools.FileOption "" output_fn
1256 ++ map SysTools.Option (
1263 #ifdef darwin_TARGET_OS
1264 ++ framework_path_opts
1267 ++ pkg_lib_path_opts
1269 #ifdef darwin_TARGET_OS
1270 ++ pkg_framework_path_opts
1271 ++ pkg_framework_opts
1277 -- parallel only: move binary to another dir -- HWL
1278 when (WayPar `elem` ways)
1279 (do success <- runPhase_MoveBinary dflags output_fn
1280 if success then return ()
1281 else throwDyn (InstallationError ("cannot move binary to PVM dir")))
1284 exeFileName :: DynFlags -> FilePath
1286 | Just s <- outputFile dflags =
1287 #if defined(mingw32_HOST_OS)
1288 if null (takeExtension s)
1295 #if defined(mingw32_HOST_OS)
1303 -> FilePath -- filename of executable
1304 -> IO [FilePath] -- extra objects to embed, maybe
1305 #ifndef mingw32_TARGET_OS
1306 maybeCreateManifest _ _ = do
1309 maybeCreateManifest dflags exe_filename = do
1310 if not (dopt Opt_GenManifest dflags) then return [] else do
1312 let manifest_filename = exe_filename <.> "manifest"
1314 writeFile manifest_filename $
1315 "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"++
1316 " <assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestVersion=\"1.0\">\n"++
1317 " <assemblyIdentity version=\"1.0.0.0\"\n"++
1318 " processorArchitecture=\"X86\"\n"++
1319 " name=\"" ++ dropExtension exe_filename ++ "\"\n"++
1320 " type=\"win32\"/>\n\n"++
1321 " <trustInfo xmlns=\"urn:schemas-microsoft-com:asm.v3\">\n"++
1323 " <requestedPrivileges>\n"++
1324 " <requestedExecutionLevel level=\"asInvoker\" uiAccess=\"false\"/>\n"++
1325 " </requestedPrivileges>\n"++
1330 -- Windows will find the manifest file if it is named foo.exe.manifest.
1331 -- However, for extra robustness, and so that we can move the binary around,
1332 -- we can embed the manifest in the binary itself using windres:
1333 if not (dopt Opt_EmbedManifest dflags) then return [] else do
1335 rc_filename <- newTempName dflags "rc"
1336 rc_obj_filename <- newTempName dflags (objectSuf dflags)
1338 writeFile rc_filename $
1339 "1 24 MOVEABLE PURE " ++ show manifest_filename ++ "\n"
1340 -- magic numbers :-)
1341 -- show is a bit hackish above, but we need to escape the
1342 -- backslashes in the path.
1344 let wr_opts = getOpts dflags opt_windres
1345 runWindres dflags $ map SysTools.Option $
1346 ["--input="++rc_filename,
1347 "--output="++rc_obj_filename,
1348 "--output-format=coff"]
1350 -- no FileOptions here: windres doesn't like seeing
1351 -- backslashes, apparently
1353 return [rc_obj_filename]
1357 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1358 linkDynLib dflags o_files dep_packages = do
1359 let verb = getVerbFlag dflags
1360 let o_file = outputFile dflags
1362 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1363 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1365 let lib_paths = libraryPaths dflags
1366 let lib_path_opts = map ("-L"++) lib_paths
1368 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1370 -- probably _stub.o files
1371 extra_ld_inputs <- readIORef v_Ld_inputs
1373 let (md_c_flags, _) = machdepCCOpts dflags
1374 let extra_ld_opts = getOpts dflags opt_l
1375 #if defined(mingw32_HOST_OS)
1376 -----------------------------------------------------------------------------
1378 -----------------------------------------------------------------------------
1379 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1381 SysTools.runLink dflags
1382 ([ SysTools.Option verb
1383 , SysTools.Option "-o"
1384 , SysTools.FileOption "" output_fn
1385 , SysTools.Option "-shared"
1386 , SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
1388 ++ map (SysTools.FileOption "") o_files
1389 ++ map SysTools.Option (
1394 ++ pkg_lib_path_opts
1397 #elif defined(darwin_TARGET_OS)
1398 -----------------------------------------------------------------------------
1399 -- Making a darwin dylib
1400 -----------------------------------------------------------------------------
1401 -- About the options used for Darwin:
1403 -- Apple's way of saying -shared
1404 -- -undefined dynamic_lookup:
1405 -- Without these options, we'd have to specify the correct dependencies
1406 -- for each of the dylibs. Note that we could (and should) do without this
1407 -- for all libraries except the RTS; all we need to do is to pass the
1408 -- correct HSfoo_dyn.dylib files to the link command.
1409 -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
1410 -- -flat_namespace -undefined suppress, which works on earlier versions,
1411 -- but it has other disadvantages.
1413 -- Build the dynamic library as a single "module", i.e. no dynamic binding
1414 -- nonsense when referring to symbols from within the library. The NCG
1415 -- assumes that this option is specified (on i386, at least).
1416 -- -Wl,-macosx_version_min -Wl,10.3
1417 -- Tell the linker its safe to assume that the library will run on 10.3 or
1418 -- later, so that it will not complain about the use of the option
1419 -- -undefined dynamic_lookup above.
1421 -- Causes the dynamic linker to ignore the DYLD_LIBRARY_PATH when loading
1422 -- this lib and instead look for it at its absolute path.
1423 -- When installing the .dylibs (see target.mk), we'll change that path to
1424 -- point to the place they are installed. Therefore, we won't have to set
1425 -- up DYLD_LIBRARY_PATH specifically for ghc.
1426 -----------------------------------------------------------------------------
1428 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1430 pwd <- getCurrentDirectory
1431 SysTools.runLink dflags
1432 ([ SysTools.Option verb
1433 , SysTools.Option "-dynamiclib"
1434 , SysTools.Option "-o"
1435 , SysTools.FileOption "" output_fn
1437 ++ map SysTools.Option (
1440 ++ [ "-undefined", "dynamic_lookup", "-single_module", "-Wl,-macosx_version_min","-Wl,10.3", "-install_name " ++ (pwd </> output_fn) ]
1444 ++ pkg_lib_path_opts
1448 -----------------------------------------------------------------------------
1450 -----------------------------------------------------------------------------
1452 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1454 SysTools.runLink dflags
1455 ([ SysTools.Option verb
1456 , SysTools.Option "-o"
1457 , SysTools.FileOption "" output_fn
1459 ++ map SysTools.Option (
1462 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1466 ++ pkg_lib_path_opts
1470 -- -----------------------------------------------------------------------------
1473 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1474 doCpp dflags raw include_cc_opts input_fn output_fn = do
1475 let hscpp_opts = getOpts dflags opt_P
1476 let cmdline_include_paths = includePaths dflags
1478 pkg_include_dirs <- getPackageIncludePath dflags []
1479 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1480 (cmdline_include_paths ++ pkg_include_dirs)
1482 let verb = getVerbFlag dflags
1485 | not include_cc_opts = []
1486 | otherwise = (optc ++ md_c_flags)
1488 optc = getOpts dflags opt_c
1489 (md_c_flags, _) = machdepCCOpts dflags
1491 let cpp_prog args | raw = SysTools.runCpp dflags args
1492 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1495 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1496 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1497 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1498 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1499 -- remember, in code we *compile*, the HOST is the same our TARGET,
1500 -- and BUILD is the same as our HOST.
1502 cpp_prog ([SysTools.Option verb]
1503 ++ map SysTools.Option include_paths
1504 ++ map SysTools.Option hsSourceCppOpts
1505 ++ map SysTools.Option hscpp_opts
1506 ++ map SysTools.Option cc_opts
1507 ++ map SysTools.Option target_defs
1508 ++ [ SysTools.Option "-x"
1509 , SysTools.Option "c"
1510 , SysTools.Option input_fn
1511 -- We hackily use Option instead of FileOption here, so that the file
1512 -- name is not back-slashed on Windows. cpp is capable of
1513 -- dealing with / in filenames, so it works fine. Furthermore
1514 -- if we put in backslashes, cpp outputs #line directives
1515 -- with *double* backslashes. And that in turn means that
1516 -- our error messages get double backslashes in them.
1517 -- In due course we should arrange that the lexer deals
1518 -- with these \\ escapes properly.
1519 , SysTools.Option "-o"
1520 , SysTools.FileOption "" output_fn
1523 cHaskell1Version :: String
1524 cHaskell1Version = "5" -- i.e., Haskell 98
1526 hsSourceCppOpts :: [String]
1527 -- Default CPP defines in Haskell source
1529 [ "-D__HASKELL1__="++cHaskell1Version
1530 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1532 , "-D__CONCURRENT_HASKELL__"
1536 -- -----------------------------------------------------------------------------
1539 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1540 hscNextPhase _ HsBootFile _ = StopLn
1541 hscNextPhase dflags _ hsc_lang =
1544 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1546 HscNothing -> StopLn
1547 HscInterpreted -> StopLn
1551 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1552 hscMaybeAdjustTarget dflags stop _ current_hsc_lang
1555 keep_hc = dopt Opt_KeepHcFiles dflags
1557 -- don't change the lang if we're interpreting
1558 | current_hsc_lang == HscInterpreted = current_hsc_lang
1560 -- force -fvia-C if we are being asked for a .hc file
1561 | HCc <- stop = HscC
1563 -- otherwise, stick to the plan
1564 | otherwise = current_hsc_lang
1566 v_Split_info :: IORef (String, Int)
1567 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
1568 -- The split prefix and number of files