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)
19 compile, CompResult(..),
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
54 import SYSTEM_IO_ERROR as IO
56 import Data.List ( isSuffixOf )
59 import System.Environment
61 -- ---------------------------------------------------------------------------
64 -- Just preprocess a file, put the result in a temp. file (used by the
65 -- compilation manager during the summary phase).
67 -- We return the augmented DynFlags, because they contain the result
68 -- of slurping in the OPTIONS pragmas
70 preprocess :: DynFlags -> (FilePath, Maybe Phase) -> IO (DynFlags, FilePath)
71 preprocess dflags (filename, mb_phase) =
72 ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
73 runPipeline anyHsc dflags (filename, mb_phase)
74 Nothing Temporary Nothing{-no ModLocation-}
76 -- ---------------------------------------------------------------------------
79 -- Compile a single module, under the control of the compilation manager.
81 -- This is the interface between the compilation manager and the
82 -- compiler proper (hsc), where we deal with tedious details like
83 -- reading the OPTIONS pragma from the source file, and passing the
84 -- output of hsc through the C compiler.
86 -- NB. No old interface can also mean that the source has changed.
90 -> Maybe Linkable -- Just linkable <=> source unchanged
91 -> Maybe ModIface -- Old interface, if available
96 = CompOK ModDetails -- New details
98 (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable
103 compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do
105 let dflags0 = ms_hspp_opts mod_summary
106 this_mod = ms_mod mod_summary
107 src_flavour = ms_hsc_src mod_summary
110 | Just l <- maybe_old_linkable, isObjectLinkable l = True
113 -- FIXME: We need to know whether or not we're recompiling the file. Move this to HscMain?
114 --showPass dflags0 ("Compiling " ++ showModMsg have_object mod_summary)
116 let location = ms_location mod_summary
117 let input_fn = expectJust "compile:hs" (ml_hs_file location)
118 let input_fnpp = ms_hspp_file mod_summary
120 debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
122 let (basename, _) = splitFilename input_fn
124 -- We add the directory in which the .hs files resides) to the import path.
125 -- This is needed when we try to compile the .hc file later, if it
126 -- imports a _stub.h file that we created here.
127 let current_dir = directoryOf basename
128 old_paths = includePaths dflags0
129 dflags = dflags0 { includePaths = current_dir : old_paths }
131 -- Figure out what lang we're generating
132 let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
133 -- ... and what the next phase should be
134 let next_phase = hscNextPhase dflags src_flavour hsc_lang
135 -- ... and what file to generate the output into
136 output_fn <- getOutputFilename next_phase
137 Temporary basename dflags next_phase (Just location)
139 let dflags' = dflags { hscTarget = hsc_lang,
140 hscOutName = output_fn,
141 extCoreName = basename ++ ".hcr" }
143 -- -no-recomp should also work with --make
144 let force_recomp = dopt Opt_ForceRecomp dflags
145 source_unchanged = isJust maybe_old_linkable && not force_recomp
146 hsc_env' = hsc_env { hsc_dflags = dflags' }
147 object_filename = ml_obj_file location
149 let getStubLinkable False = return []
151 = do stub_o <- compileStub dflags' this_mod location
152 return [ DotO stub_o ]
154 handleBatch (HscNoRecomp, iface, details)
155 = ASSERT (isJust maybe_old_linkable)
156 return (CompOK details iface maybe_old_linkable)
157 handleBatch (HscRecomp hasStub, iface, details)
158 | isHsBoot src_flavour
159 = do SysTools.touch dflags' "Touching object file"
161 return (CompOK details iface Nothing)
163 = do stub_unlinked <- getStubLinkable hasStub
164 (hs_unlinked, unlinked_time) <-
167 -> return ([], ms_hs_date mod_summary)
168 -- We're in --make mode: finish the compilation pipeline.
170 -> do runPipeline StopLn dflags (output_fn,Nothing)
174 -- The object filename comes from the ModLocation
175 o_time <- getModificationTime object_filename
176 return ([DotO object_filename], o_time)
177 let linkable = LM unlinked_time this_mod
178 (hs_unlinked ++ stub_unlinked)
179 return (CompOK details iface (Just linkable))
181 handleInterpreted (InteractiveNoRecomp, iface, details)
182 = ASSERT (isJust maybe_old_linkable)
183 return (CompOK details iface maybe_old_linkable)
184 handleInterpreted (InteractiveRecomp hasStub comp_bc, iface, details)
185 = do stub_unlinked <- getStubLinkable hasStub
186 let hs_unlinked = [BCOs comp_bc]
187 unlinked_time = ms_hs_date mod_summary
188 -- Why do we use the timestamp of the source file here,
189 -- rather than the current time? This works better in
190 -- the case where the local clock is out of sync
191 -- with the filesystem's clock. It's just as accurate:
192 -- if the source is modified, then the linkable will
194 let linkable = LM unlinked_time this_mod
195 (hs_unlinked ++ stub_unlinked)
196 return (CompOK details iface (Just linkable))
198 let runCompiler compiler handle
199 = do mbResult <- compiler hsc_env' mod_summary
200 source_unchanged old_iface
201 (Just (mod_index, nmods))
203 Nothing -> return CompErrs
204 Just result -> handle result
207 HscInterpreted | not (isHsBoot src_flavour) -- We can't compile boot files to
208 -- bytecode so don't even try.
209 -> runCompiler hscCompileInteractive handleInterpreted
211 -> runCompiler hscCompileNothing handleBatch
213 -> runCompiler hscCompileBatch handleBatch
215 -----------------------------------------------------------------------------
216 -- stub .h and .c files (for foreign export support)
218 -- The _stub.c file is derived from the haskell source file, possibly taking
219 -- into account the -stubdir option.
221 -- Consequently, we derive the _stub.o filename from the haskell object
224 -- This isn't necessarily the same as the object filename we
225 -- would get if we just compiled the _stub.c file using the pipeline.
228 -- ghc src/A.hs -odir obj
230 -- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
231 -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
234 compileStub :: DynFlags -> Module -> ModLocation -> IO FilePath
235 compileStub dflags mod location = do
236 let (o_base, o_ext) = splitFilename (ml_obj_file location)
237 stub_o = o_base ++ "_stub" `joinFileExt` o_ext
239 -- compile the _stub.c file w/ gcc
240 let (stub_c,_) = mkStubPaths dflags (moduleName mod) location
241 runPipeline StopLn dflags (stub_c,Nothing) Nothing
242 (SpecificFile stub_o) Nothing{-no ModLocation-}
247 -- ---------------------------------------------------------------------------
250 link :: GhcLink -- interactive or batch
251 -> DynFlags -- dynamic flags
252 -> Bool -- attempt linking in batch mode?
253 -> HomePackageTable -- what to link
256 -- For the moment, in the batch linker, we don't bother to tell doLink
257 -- which packages to link -- it just tries all that are available.
258 -- batch_attempt_linking should only be *looked at* in batch mode. It
259 -- should only be True if the upsweep was successful and someone
260 -- exports main, i.e., we have good reason to believe that linking
264 link LinkInMemory dflags batch_attempt_linking hpt
265 = do -- Not Linking...(demand linker will do the job)
269 link NoLink dflags batch_attempt_linking hpt
272 link LinkBinary dflags batch_attempt_linking hpt
273 | batch_attempt_linking
276 home_mod_infos = eltsUFM hpt
278 -- the packages we depend on
279 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
281 -- the linkables to link
282 linkables = map (expectJust "link".hm_linkable) home_mod_infos
284 debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
286 -- check for the -no-link flag
287 if isNoLink (ghcLink dflags)
288 then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
292 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
293 obj_files = concatMap getOfiles linkables
295 exe_file = exeFileName dflags
297 -- if the modification time on the executable is later than the
298 -- modification times on all of the objects, then omit linking
299 -- (unless the -no-recomp flag was given).
300 e_exe_time <- IO.try $ getModificationTime exe_file
302 | Left _ <- e_exe_time = True
303 | Right t <- e_exe_time =
304 any (t <) (map linkableTime linkables)
306 if not (dopt Opt_ForceRecomp dflags) && not linking_needed
307 then do debugTraceMsg dflags 2 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
311 debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
314 -- Don't showPass in Batch mode; doLink will do that for us.
315 let link = case ghcLink dflags of
316 LinkBinary -> linkBinary
317 LinkDynLib -> linkDynLib
318 link dflags obj_files pkg_deps
320 debugTraceMsg dflags 3 (text "link: done")
322 -- linkBinary only returns if it succeeds
326 = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
327 text " Main.main not exported; not linking.")
331 -- -----------------------------------------------------------------------------
332 -- Compile files in one-shot mode.
334 oneShot :: DynFlags -> Phase -> [(String, Maybe Phase)] -> IO ()
335 oneShot dflags stop_phase srcs = do
336 o_files <- mapM (compileFile dflags stop_phase) srcs
337 doLink dflags stop_phase o_files
339 compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
340 compileFile dflags stop_phase (src, mb_phase) = do
341 exists <- doesFileExist src
343 throwDyn (CmdLineError ("does not exist: " ++ src))
346 split = dopt Opt_SplitObjs dflags
347 mb_o_file = outputFile dflags
348 ghc_link = ghcLink dflags -- Set by -c or -no-link
350 -- When linking, the -o argument refers to the linker's output.
351 -- otherwise, we use it as the name for the pipeline's output.
353 | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent
354 -- -o foo applies to linker
355 | Just o_file <- mb_o_file = SpecificFile o_file
356 -- -o foo applies to the file we are compiling now
357 | otherwise = Persistent
359 stop_phase' = case stop_phase of
360 As | split -> SplitAs
363 (_, out_file) <- runPipeline stop_phase' dflags
364 (src, mb_phase) Nothing output
365 Nothing{-no ModLocation-}
369 doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
370 doLink dflags stop_phase o_files
371 | not (isStopLn stop_phase)
372 = return () -- We stopped before the linking phase
375 = case ghcLink dflags of
377 LinkBinary -> linkBinary dflags o_files link_pkgs
378 LinkDynLib -> linkDynLib dflags o_files []
380 -- Always link in the haskell98 package for static linking. Other
381 -- packages have to be specified via the -package flag.
382 link_pkgs = [haskell98PackageId]
385 -- ---------------------------------------------------------------------------
386 -- Run a compilation pipeline, consisting of multiple phases.
388 -- This is the interface to the compilation pipeline, which runs
389 -- a series of compilation steps on a single source file, specifying
390 -- at which stage to stop.
392 -- The DynFlags can be modified by phases in the pipeline (eg. by
393 -- GHC_OPTIONS pragmas), and the changes affect later phases in the
398 -- output should be to a temporary file: we're going to
399 -- run more compilation steps on this output later
401 -- we want a persistent file, i.e. a file in the current directory
402 -- derived from the input filename, but with the appropriate extension.
403 -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
404 | SpecificFile FilePath
405 -- the output must go into the specified file.
408 :: Phase -- When to stop
409 -> DynFlags -- Dynamic flags
410 -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
411 -> Maybe FilePath -- original basename (if different from ^^^)
412 -> PipelineOutput -- Output filename
413 -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
414 -> IO (DynFlags, FilePath) -- (final flags, output filename)
416 runPipeline stop_phase dflags (input_fn, mb_phase) mb_basename output maybe_loc
418 let (input_basename, suffix) = splitFilename input_fn
419 basename | Just b <- mb_basename = b
420 | otherwise = input_basename
422 -- If we were given a -x flag, then use that phase to start from
423 start_phase = fromMaybe (startPhase suffix) mb_phase
425 -- We want to catch cases of "you can't get there from here" before
426 -- we start the pipeline, because otherwise it will just run off the
429 -- There is a partial ordering on phases, where A < B iff A occurs
430 -- before B in a normal compilation pipeline.
432 when (not (start_phase `happensBefore` stop_phase)) $
434 ("cannot compile this file to desired target: "
437 -- this is a function which will be used to calculate output file names
438 -- as we go along (we partially apply it to some of its inputs here)
439 let get_output_fn = getOutputFilename stop_phase output basename
441 -- Execute the pipeline...
442 (dflags', output_fn, maybe_loc) <-
443 pipeLoop dflags start_phase stop_phase input_fn
444 basename suffix get_output_fn maybe_loc
446 -- Sometimes, a compilation phase doesn't actually generate any output
447 -- (eg. the CPP phase when -fcpp is not turned on). If we end on this
448 -- stage, but we wanted to keep the output, then we have to explicitly
449 -- copy the file, remembering to prepend a {-# LINE #-} pragma so that
450 -- further compilation stages can tell what the original filename was.
453 return (dflags', output_fn)
455 do final_fn <- get_output_fn dflags' stop_phase maybe_loc
456 when (final_fn /= output_fn) $ do
457 let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
458 line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
459 copyWithHeader dflags msg line_prag output_fn final_fn
460 return (dflags', final_fn)
464 pipeLoop :: DynFlags -> Phase -> Phase
465 -> FilePath -> String -> Suffix
466 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
468 -> IO (DynFlags, FilePath, Maybe ModLocation)
470 pipeLoop dflags phase stop_phase
471 input_fn orig_basename orig_suff
472 orig_get_output_fn maybe_loc
474 | phase `eqPhase` stop_phase -- All done
475 = return (dflags, input_fn, maybe_loc)
477 | not (phase `happensBefore` stop_phase)
478 -- Something has gone wrong. We'll try to cover all the cases when
479 -- this could happen, so if we reach here it is a panic.
480 -- eg. it might happen if the -C flag is used on a source file that
481 -- has {-# OPTIONS -fasm #-}.
482 = panic ("pipeLoop: at phase " ++ show phase ++
483 " but I wanted to stop at phase " ++ show stop_phase)
486 = do { (next_phase, dflags', maybe_loc, output_fn)
487 <- runPhase phase stop_phase dflags orig_basename
488 orig_suff input_fn orig_get_output_fn maybe_loc
489 ; pipeLoop dflags' next_phase stop_phase output_fn
490 orig_basename orig_suff orig_get_output_fn maybe_loc }
493 :: Phase -> PipelineOutput -> String
494 -> DynFlags -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
495 getOutputFilename stop_phase output basename
498 func dflags next_phase maybe_location
499 | is_last_phase, Persistent <- output = persistent_fn
500 | is_last_phase, SpecificFile f <- output = return f
501 | keep_this_output = persistent_fn
502 | otherwise = newTempName dflags suffix
505 odir = objectDir dflags
506 osuf = objectSuf dflags
507 keep_hc = dopt Opt_KeepHcFiles dflags
508 keep_raw_s = dopt Opt_KeepRawSFiles dflags
509 keep_s = dopt Opt_KeepSFiles dflags
511 myPhaseInputExt HCc = hcsuf
512 myPhaseInputExt StopLn = osuf
513 myPhaseInputExt other = phaseInputExt other
515 is_last_phase = next_phase `eqPhase` stop_phase
517 -- sometimes, we keep output from intermediate stages
521 Mangle | keep_raw_s -> True
523 HCc | keep_hc -> True
526 suffix = myPhaseInputExt next_phase
528 -- persistent object files get put in odir
530 | StopLn <- next_phase = return odir_persistent
531 | otherwise = return persistent
533 persistent = basename `joinFileExt` suffix
536 | Just loc <- maybe_location = ml_obj_file loc
537 | Just d <- odir = d `joinFileName` persistent
538 | otherwise = persistent
541 -- -----------------------------------------------------------------------------
542 -- Each phase in the pipeline returns the next phase to execute, and the
543 -- name of the file in which the output was placed.
545 -- We must do things dynamically this way, because we often don't know
546 -- what the rest of the phases will be until part-way through the
547 -- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
548 -- of a source file can change the latter stages of the pipeline from
549 -- taking the via-C route to using the native code generator.
551 runPhase :: Phase -- Do this phase first
552 -> Phase -- Stop just before this phase
554 -> String -- basename of original input source
555 -> String -- its extension
556 -> FilePath -- name of file which contains the input to this phase.
557 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
558 -- how to calculate the output filename
559 -> Maybe ModLocation -- the ModLocation, if we have one
560 -> IO (Phase, -- next phase
561 DynFlags, -- new dynamic flags
562 Maybe ModLocation, -- the ModLocation, if we have one
563 FilePath) -- output filename
565 -- Invariant: the output filename always contains the output
566 -- Interesting case: Hsc when there is no recompilation to do
567 -- Then the output filename is still a .o file
569 -------------------------------------------------------------------------------
572 runPhase (Unlit sf) _stop dflags _basename _suff input_fn get_output_fn maybe_loc
573 = do let unlit_flags = getOpts dflags opt_L
574 -- The -h option passes the file name for unlit to put in a #line directive
575 output_fn <- get_output_fn dflags (Cpp sf) maybe_loc
577 SysTools.runUnlit dflags
578 (map SysTools.Option unlit_flags ++
579 [ SysTools.Option "-h"
580 , SysTools.Option input_fn
581 , SysTools.FileOption "" input_fn
582 , SysTools.FileOption "" output_fn
585 return (Cpp sf, dflags, maybe_loc, output_fn)
587 -------------------------------------------------------------------------------
588 -- Cpp phase : (a) gets OPTIONS out of file
589 -- (b) runs cpp if necessary
591 runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc
592 = do src_opts <- getOptionsFromFile input_fn
593 (dflags,unhandled_flags) <- parseDynamicFlags dflags0 (map unLoc src_opts)
594 checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff)
596 if not (dopt Opt_Cpp dflags) then
597 -- no need to preprocess CPP, just pass input file along
598 -- to the next phase of the pipeline.
599 return (HsPp sf, dflags, maybe_loc, input_fn)
601 output_fn <- get_output_fn dflags (HsPp sf) maybe_loc
602 doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
603 return (HsPp sf, dflags, maybe_loc, output_fn)
605 -------------------------------------------------------------------------------
608 runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
609 = do if not (dopt Opt_Pp dflags) then
610 -- no need to preprocess, just pass input file along
611 -- to the next phase of the pipeline.
612 return (Hsc sf, dflags, maybe_loc, input_fn)
614 let hspp_opts = getOpts dflags opt_F
615 let orig_fn = basename `joinFileExt` suff
616 output_fn <- get_output_fn dflags (Hsc sf) maybe_loc
617 SysTools.runPp dflags
618 ( [ SysTools.Option orig_fn
619 , SysTools.Option input_fn
620 , SysTools.FileOption "" output_fn
622 map SysTools.Option hspp_opts
624 return (Hsc sf, dflags, maybe_loc, output_fn)
626 -----------------------------------------------------------------------------
629 -- Compilation of a single module, in "legacy" mode (_not_ under
630 -- the direction of the compilation manager).
631 runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _maybe_loc
632 = do -- normal Hsc mode, not mkdependHS
634 -- we add the current directory (i.e. the directory in which
635 -- the .hs files resides) to the import path, since this is
636 -- what gcc does, and it's probably what you want.
637 let current_dir = directoryOf basename
639 paths = includePaths dflags0
640 dflags = dflags0 { includePaths = current_dir : paths }
642 -- gather the imports and module name
643 (hspp_buf,mod_name,imps,src_imps) <-
645 ExtCoreFile -> do { -- no explicit imports in ExtCore input.
646 ; m <- getCoreModuleName input_fn
647 ; return (Nothing, mkModuleName m, [], []) }
649 other -> do { buf <- hGetStringBuffer input_fn
650 ; (src_imps,imps,L _ mod_name) <- getImports dflags buf input_fn
651 ; return (Just buf, mod_name, imps, src_imps) }
653 -- Build a ModLocation to pass to hscMain.
654 -- The source filename is rather irrelevant by now, but it's used
655 -- by hscMain for messages. hscMain also needs
656 -- the .hi and .o filenames, and this is as good a way
657 -- as any to generate them, and better than most. (e.g. takes
658 -- into accout the -osuf flags)
659 location1 <- mkHomeModLocation2 dflags mod_name basename suff
661 -- Boot-ify it if necessary
662 let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
663 | otherwise = location1
666 -- Take -ohi into account if present
667 -- This can't be done in mkHomeModuleLocation because
668 -- it only applies to the module being compiles
669 let ohi = outputHi dflags
670 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
671 | otherwise = location2
673 -- Take -o into account if present
674 -- Very like -ohi, but we must *only* do this if we aren't linking
675 -- (If we're linking then the -o applies to the linked thing, not to
676 -- the object file for one module.)
677 -- Note the nasty duplication with the same computation in compileFile above
678 let expl_o_file = outputFile dflags
679 location4 | Just ofile <- expl_o_file
680 , isNoLink (ghcLink dflags)
681 = location3 { ml_obj_file = ofile }
682 | otherwise = location3
684 o_file = ml_obj_file location4 -- The real object file
687 -- Figure out if the source has changed, for recompilation avoidance.
689 -- Setting source_unchanged to True means that M.o seems
690 -- to be up to date wrt M.hs; so no need to recompile unless imports have
691 -- changed (which the compiler itself figures out).
692 -- Setting source_unchanged to False tells the compiler that M.o is out of
693 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
694 src_timestamp <- getModificationTime (basename `joinFileExt` suff)
696 let force_recomp = dopt Opt_ForceRecomp dflags
698 if force_recomp || not (isStopLn stop)
699 -- Set source_unchanged to False unconditionally if
700 -- (a) recompilation checker is off, or
701 -- (b) we aren't going all the way to .o file (e.g. ghc -S)
703 -- Otherwise look at file modification dates
704 else do o_file_exists <- doesFileExist o_file
706 then return False -- Need to recompile
707 else do t2 <- getModificationTime o_file
708 if t2 > src_timestamp
713 let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
714 let next_phase = hscNextPhase dflags src_flavour hsc_lang
715 output_fn <- get_output_fn dflags next_phase (Just location4)
717 let dflags' = dflags { hscTarget = hsc_lang,
718 hscOutName = output_fn,
719 extCoreName = basename ++ ".hcr" }
721 hsc_env <- newHscEnv dflags'
723 -- Tell the finder cache about this module
724 mod <- addHomeModuleToFinder hsc_env mod_name location4
726 -- Make the ModSummary to hand to hscMain
728 unused_field = panic "runPhase:ModSummary field"
729 -- Some fields are not looked at by hscMain
730 mod_summary = ModSummary { ms_mod = mod,
731 ms_hsc_src = src_flavour,
732 ms_hspp_file = input_fn,
733 ms_hspp_opts = dflags,
734 ms_hspp_buf = hspp_buf,
735 ms_location = location4,
736 ms_hs_date = src_timestamp,
737 ms_obj_date = Nothing,
739 ms_srcimps = src_imps }
742 mbResult <- hscCompileOneShot hsc_env
743 mod_summary source_unchanged
745 Nothing -- No "module i of n" progress info
748 Nothing -> throwDyn (PhaseFailed "hsc" (ExitFailure 1))
750 -> do SysTools.touch dflags' "Touching object file" o_file
751 -- The .o file must have a later modification date
752 -- than the source file (else we wouldn't be in HscNoRecomp)
753 -- but we touch it anyway, to keep 'make' happy (we think).
754 return (StopLn, dflags', Just location4, o_file)
755 Just (HscRecomp hasStub)
757 do stub_o <- compileStub dflags' mod location4
758 consIORef v_Ld_inputs stub_o
759 -- In the case of hs-boot files, generate a dummy .o-boot
760 -- stamp file for the benefit of Make
761 when (isHsBoot src_flavour) $
762 SysTools.touch dflags' "Touching object file" o_file
763 return (next_phase, dflags', Just location4, output_fn)
765 -----------------------------------------------------------------------------
768 runPhase CmmCpp stop dflags basename suff input_fn get_output_fn maybe_loc
770 output_fn <- get_output_fn dflags Cmm maybe_loc
771 doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
772 return (Cmm, dflags, maybe_loc, output_fn)
774 runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc
776 let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
777 let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
778 output_fn <- get_output_fn dflags next_phase maybe_loc
780 let dflags' = dflags { hscTarget = hsc_lang,
781 hscOutName = output_fn,
782 extCoreName = basename ++ ".hcr" }
784 ok <- hscCmmFile dflags' input_fn
786 when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1))
788 return (next_phase, dflags, maybe_loc, output_fn)
790 -----------------------------------------------------------------------------
793 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
794 -- way too many hacks, and I can't say I've ever used it anyway.
796 runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc
797 | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc
798 = do let cc_opts = getOpts dflags opt_c
799 hcc = cc_phase `eqPhase` HCc
801 let cmdline_include_paths = includePaths dflags
803 -- HC files have the dependent packages stamped into them
804 pkgs <- if hcc then getHCFilePackages input_fn else return []
806 -- add package include paths even if we're just compiling .c
807 -- files; this is the Value Add(TM) that using ghc instead of
809 pkg_include_dirs <- getPackageIncludePath dflags pkgs
810 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
811 (cmdline_include_paths ++ pkg_include_dirs)
813 let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
814 gcc_extra_viac_flags <- getExtraViaCOpts dflags
815 let pic_c_flags = picCCOpts dflags
817 let verb = getVerbFlag dflags
819 pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs
821 let split_objs = dopt Opt_SplitObjs dflags
822 split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
825 let excessPrecision = dopt Opt_ExcessPrecision dflags
827 let cc_opt | optLevel dflags >= 2 = "-O2"
832 let mangle = dopt Opt_DoAsmMangling dflags
834 | hcc && mangle = Mangle
836 output_fn <- get_output_fn dflags next_phase maybe_loc
841 -- on x86 the floating point regs have greater precision
842 -- than a double, which leads to unpredictable results.
843 -- By default, we turn this off with -ffloat-store unless
844 -- the user specified -fexcess-precision.
845 (if excessPrecision then [] else [ "-ffloat-store" ]) ++
847 -- gcc's -fstrict-aliasing allows two accesses to memory
848 -- to be considered non-aliasing if they have different types.
849 -- This interacts badly with the C code we generate, which is
850 -- very weakly typed, being derived from C--.
851 ["-fno-strict-aliasing"]
855 SysTools.runCc dflags (
856 -- force the C compiler to interpret this file as C when
857 -- compiling .hc files, by adding the -x c option.
858 -- Also useful for plain .c files, just in case GHC saw a
860 [ SysTools.Option "-x", if cc_phase `eqPhase` Ccpp
861 then SysTools.Option "c++" else SysTools.Option "c"] ++
862 [ SysTools.FileOption "" input_fn
863 , SysTools.Option "-o"
864 , SysTools.FileOption "" output_fn
866 ++ map SysTools.Option (
869 #ifdef sparc_TARGET_ARCH
870 -- We only support SparcV9 and better because V8 lacks an atomic CAS
871 -- instruction. Note that the user can still override this
872 -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
873 -- regardless of the ordering.
875 -- This is a temporary hack.
883 then gcc_extra_viac_flags
884 else filter (=="-fwrapv")
886 -- still want -fwrapv even for unreg'd
891 ++ [ verb, "-S", "-Wimplicit", cc_opt ]
892 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
899 return (next_phase, dflags, maybe_loc, output_fn)
901 -- ToDo: postprocess the output from gcc
903 -----------------------------------------------------------------------------
906 runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
907 = do let mangler_opts = getOpts dflags opt_m
910 machdep_opts <- return [ show (stolen_x86_regs dflags) ]
912 machdep_opts <- return []
915 let split = dopt Opt_SplitObjs dflags
917 | split = SplitMangle
919 output_fn <- get_output_fn dflags next_phase maybe_loc
921 SysTools.runMangle dflags (map SysTools.Option mangler_opts
922 ++ [ SysTools.FileOption "" input_fn
923 , SysTools.FileOption "" output_fn
925 ++ map SysTools.Option machdep_opts)
927 return (next_phase, dflags, maybe_loc, output_fn)
929 -----------------------------------------------------------------------------
932 runPhase SplitMangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
933 = do -- tmp_pfx is the prefix used for the split .s files
934 -- We also use it as the file to contain the no. of split .s files (sigh)
935 split_s_prefix <- SysTools.newTempName dflags "split"
936 let n_files_fn = split_s_prefix
938 SysTools.runSplit dflags
939 [ SysTools.FileOption "" input_fn
940 , SysTools.FileOption "" split_s_prefix
941 , SysTools.FileOption "" n_files_fn
944 -- Save the number of split files for future references
945 s <- readFile n_files_fn
946 let n_files = read s :: Int
947 writeIORef v_Split_info (split_s_prefix, n_files)
949 -- Remember to delete all these files
950 addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
953 return (SplitAs, dflags, maybe_loc, "**splitmangle**")
954 -- we don't use the filename
956 -----------------------------------------------------------------------------
959 runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc
960 = do let as_opts = getOpts dflags opt_a
961 let cmdline_include_paths = includePaths dflags
963 output_fn <- get_output_fn dflags StopLn maybe_loc
965 -- we create directories for the object file, because it
966 -- might be a hierarchical module.
967 createDirectoryHierarchy (directoryOf output_fn)
969 SysTools.runAs dflags
970 (map SysTools.Option as_opts
971 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
972 #ifdef sparc_TARGET_ARCH
973 -- We only support SparcV9 and better because V8 lacks an atomic CAS
974 -- instruction so we have to make sure that the assembler accepts the
975 -- instruction set. Note that the user can still override this
976 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
977 -- regardless of the ordering.
979 -- This is a temporary hack.
980 ++ [ SysTools.Option "-mcpu=v9" ]
982 ++ [ SysTools.Option "-c"
983 , SysTools.FileOption "" input_fn
984 , SysTools.Option "-o"
985 , SysTools.FileOption "" output_fn
988 return (StopLn, dflags, maybe_loc, output_fn)
991 runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc
993 output_fn <- get_output_fn dflags StopLn maybe_loc
995 let (base_o, _) = splitFilename output_fn
996 split_odir = base_o ++ "_split"
997 osuf = objectSuf dflags
999 createDirectoryHierarchy split_odir
1001 -- remove M_split/ *.o, because we're going to archive M_split/ *.o
1002 -- later and we don't want to pick up any old objects.
1003 fs <- getDirectoryContents split_odir
1004 mapM_ removeFile $ map (split_odir `joinFileName`)
1005 $ filter (osuf `isSuffixOf`) fs
1007 let as_opts = getOpts dflags opt_a
1009 (split_s_prefix, n) <- readIORef v_Split_info
1011 let split_s n = split_s_prefix ++ "__" ++ show n `joinFileExt` "s"
1012 split_obj n = split_odir `joinFileName`
1013 filenameOf base_o ++ "__" ++ show n
1017 = SysTools.runAs dflags
1018 (map SysTools.Option as_opts ++
1019 [ SysTools.Option "-c"
1020 , SysTools.Option "-o"
1021 , SysTools.FileOption "" (split_obj n)
1022 , SysTools.FileOption "" (split_s n)
1025 mapM_ assemble_file [1..n]
1027 -- and join the split objects into a single object file:
1028 let ld_r args = SysTools.runLink dflags ([
1029 SysTools.Option "-nostdlib",
1030 SysTools.Option "-nodefaultlibs",
1031 SysTools.Option "-Wl,-r",
1032 SysTools.Option ld_x_flag,
1033 SysTools.Option "-o",
1034 SysTools.FileOption "" output_fn ] ++ args)
1035 ld_x_flag | null cLD_X = ""
1036 | otherwise = "-Wl,-x"
1038 if cLdIsGNULd == "YES"
1040 let script = split_odir `joinFileName` "ld.script"
1042 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1043 ld_r [SysTools.FileOption "" script]
1045 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1047 return (StopLn, dflags, maybe_loc, output_fn)
1050 -----------------------------------------------------------------------------
1051 -- MoveBinary sort-of-phase
1052 -- After having produced a binary, move it somewhere else and generate a
1053 -- wrapper script calling the binary. Currently, we need this only in
1054 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
1055 -- central directory.
1056 -- This is called from linkBinary below, after linking. I haven't made it
1057 -- a separate phase to minimise interfering with other modules, and
1058 -- we don't need the generality of a phase (MoveBinary is always
1059 -- done after linking and makes only sense in a parallel setup) -- HWL
1061 runPhase_MoveBinary dflags input_fn
1063 let sysMan = pgm_sysman dflags
1064 pvm_root <- getEnv "PVM_ROOT"
1065 pvm_arch <- getEnv "PVM_ARCH"
1067 pvm_executable_base = "=" ++ input_fn
1068 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1069 -- nuke old binary; maybe use configur'ed names for cp and rm?
1070 Panic.try (removeFile pvm_executable)
1071 -- move the newly created binary into PVM land
1072 copy dflags "copying PVM executable" input_fn pvm_executable
1073 -- generate a wrapper script for running a parallel prg under PVM
1074 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1077 -- generates a Perl skript starting a parallel prg under PVM
1078 mk_pvm_wrapper_script :: String -> String -> String -> String
1079 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1081 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1082 " if $running_under_some_shell;",
1083 "# =!=!=!=!=!=!=!=!=!=!=!",
1084 "# This script is automatically generated: DO NOT EDIT!!!",
1085 "# Generated by Glasgow Haskell Compiler",
1086 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1088 "$pvm_executable = '" ++ pvm_executable ++ "';",
1089 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1090 "$SysMan = '" ++ sysMan ++ "';",
1092 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1093 "# first, some magical shortcuts to run "commands" on the binary",
1094 "# (which is hidden)",
1095 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1096 " local($cmd) = $1;",
1097 " system("$cmd $pvm_executable");",
1098 " exit(0); # all done",
1101 "# Now, run the real binary; process the args first",
1102 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1104 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1105 "@nonPVM_args = ();",
1106 "$in_RTS_args = 0;",
1108 "args: while ($a = shift(@ARGV)) {",
1109 " if ( $a eq '+RTS' ) {",
1110 " $in_RTS_args = 1;",
1111 " } elsif ( $a eq '-RTS' ) {",
1112 " $in_RTS_args = 0;",
1114 " if ( $a eq '-d' && $in_RTS_args ) {",
1116 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1117 " $nprocessors = $1;",
1118 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1119 " $nprocessors = $1;",
1121 " push(@nonPVM_args, $a);",
1125 "local($return_val) = 0;",
1126 "# Start the parallel execution by calling SysMan",
1127 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1128 "$return_val = $?;",
1129 "# ToDo: fix race condition moving files and flushing them!!",
1130 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1131 "exit($return_val);"
1134 -----------------------------------------------------------------------------
1135 -- Complain about non-dynamic flags in OPTIONS pragmas
1137 checkProcessArgsResult flags filename
1138 = do when (notNull flags) (throwDyn (ProgramError (
1139 showSDoc (hang (text filename <> char ':')
1140 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
1141 hsep (map text flags)))
1144 -----------------------------------------------------------------------------
1145 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1147 getHCFilePackages :: FilePath -> IO [PackageId]
1148 getHCFilePackages filename =
1149 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1152 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1153 return (map stringToPackageId (words rest))
1157 -----------------------------------------------------------------------------
1158 -- Static linking, of .o files
1160 -- The list of packages passed to link is the list of packages on
1161 -- which this program depends, as discovered by the compilation
1162 -- manager. It is combined with the list of packages that the user
1163 -- specifies on the command line with -package flags.
1165 -- In one-shot linking mode, we can't discover the package
1166 -- dependencies (because we haven't actually done any compilation or
1167 -- read any interface files), so the user must explicitly specify all
1170 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1171 linkBinary dflags o_files dep_packages = do
1172 let verb = getVerbFlag dflags
1173 output_fn = exeFileName dflags
1175 -- get the full list of packages to link with, by combining the
1176 -- explicit packages with the auto packages and all of their
1177 -- dependencies, and eliminating duplicates.
1179 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1180 let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
1181 get_pkg_lib_path_opts l | opt_HardwireLibPaths && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1182 | otherwise = ["-L" ++ l]
1184 let lib_paths = libraryPaths dflags
1185 let lib_path_opts = map ("-L"++) lib_paths
1187 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1189 #ifdef darwin_TARGET_OS
1190 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1191 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1193 let framework_paths = frameworkPaths dflags
1194 framework_path_opts = map ("-F"++) framework_paths
1196 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1197 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1199 let frameworks = cmdlineFrameworks dflags
1200 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1201 -- reverse because they're added in reverse order from the cmd line
1204 -- probably _stub.o files
1205 extra_ld_inputs <- readIORef v_Ld_inputs
1207 -- opts from -optl-<blah> (including -l<blah> options)
1208 let extra_ld_opts = getOpts dflags opt_l
1210 let ways = wayNames dflags
1212 -- Here are some libs that need to be linked at the *end* of
1213 -- the command line, because they contain symbols that are referred to
1214 -- by the RTS. We can't therefore use the ordinary way opts for these.
1216 debug_opts | WayDebug `elem` ways = [
1217 #if defined(HAVE_LIBBFD)
1224 thread_opts | WayThreaded `elem` ways = [
1225 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1228 #if defined(osf3_TARGET_OS)
1234 let (md_c_flags, _) = machdepCCOpts dflags
1235 SysTools.runLink dflags (
1236 [ SysTools.Option verb
1237 , SysTools.Option "-o"
1238 , SysTools.FileOption "" output_fn
1240 ++ map SysTools.Option (
1246 #ifdef darwin_TARGET_OS
1247 ++ framework_path_opts
1250 ++ pkg_lib_path_opts
1252 #ifdef darwin_TARGET_OS
1253 ++ pkg_framework_path_opts
1254 ++ pkg_framework_opts
1260 -- parallel only: move binary to another dir -- HWL
1261 when (WayPar `elem` ways)
1262 (do success <- runPhase_MoveBinary dflags output_fn
1263 if success then return ()
1264 else throwDyn (InstallationError ("cannot move binary to PVM dir")))
1267 exeFileName :: DynFlags -> FilePath
1269 | Just s <- outputFile dflags =
1270 #if defined(mingw32_HOST_OS)
1271 if null (suffixOf s)
1272 then s `joinFileExt` "exe"
1278 #if defined(mingw32_HOST_OS)
1284 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1285 linkDynLib dflags o_files dep_packages = do
1286 let verb = getVerbFlag dflags
1287 let static = opt_Static
1288 let no_hs_main = dopt Opt_NoHsMain dflags
1289 let o_file = outputFile dflags
1291 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1292 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1294 let lib_paths = libraryPaths dflags
1295 let lib_path_opts = map ("-L"++) lib_paths
1297 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1299 -- probably _stub.o files
1300 extra_ld_inputs <- readIORef v_Ld_inputs
1302 let (md_c_flags, _) = machdepCCOpts dflags
1303 let extra_ld_opts = getOpts dflags opt_l
1304 #if defined(mingw32_HOST_OS)
1305 -----------------------------------------------------------------------------
1307 -----------------------------------------------------------------------------
1308 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1310 SysTools.runLink dflags
1311 ([ SysTools.Option verb
1312 , SysTools.Option "-o"
1313 , SysTools.FileOption "" output_fn
1314 , SysTools.Option "-shared"
1315 , SysTools.Option "-Wl,--export-all-symbols"
1316 , SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
1318 ++ map (SysTools.FileOption "") o_files
1319 ++ map SysTools.Option (
1324 ++ pkg_lib_path_opts
1327 #elif defined(darwin_TARGET_OS)
1328 -----------------------------------------------------------------------------
1329 -- Making a darwin dylib
1330 -----------------------------------------------------------------------------
1331 -- About the options used for Darwin:
1333 -- Apple's way of saying -shared
1334 -- -undefined dynamic_lookup:
1335 -- Without these options, we'd have to specify the correct dependencies
1336 -- for each of the dylibs. Note that we could (and should) do without this
1337 -- for all libraries except the RTS; all we need to do is to pass the
1338 -- correct HSfoo_dyn.dylib files to the link command.
1339 -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
1340 -- -flat_namespace -undefined suppress, which works on earlier versions,
1341 -- but it has other disadvantages.
1343 -- Build the dynamic library as a single "module", i.e. no dynamic binding
1344 -- nonsense when referring to symbols from within the library. The NCG
1345 -- assumes that this option is specified (on i386, at least).
1346 -- -Wl,-macosx_version_min -Wl,10.3
1347 -- Tell the linker its safe to assume that the library will run on 10.3 or
1348 -- later, so that it will not complain about the use of the option
1349 -- -undefined dynamic_lookup above.
1351 -- Causes the dynamic linker to ignore the DYLD_LIBRARY_PATH when loading
1352 -- this lib and instead look for it at its absolute path.
1353 -- When installing the .dylibs (see target.mk), we'll change that path to
1354 -- point to the place they are installed. Therefore, we won't have to set
1355 -- up DYLD_LIBRARY_PATH specifically for ghc.
1356 -----------------------------------------------------------------------------
1358 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1360 pwd <- getCurrentDirectory
1361 SysTools.runLink dflags
1362 ([ SysTools.Option verb
1363 , SysTools.Option "-dynamiclib"
1364 , SysTools.Option "-o"
1365 , SysTools.FileOption "" output_fn
1367 ++ map SysTools.Option (
1370 ++ [ "-undefined", "dynamic_lookup", "-single_module", "-Wl,-macosx_version_min","-Wl,10.3", "-install_name " ++ (pwd `joinFileName` output_fn) ]
1374 ++ pkg_lib_path_opts
1378 -----------------------------------------------------------------------------
1380 -----------------------------------------------------------------------------
1382 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1384 SysTools.runLink dflags
1385 ([ SysTools.Option verb
1386 , SysTools.Option "-o"
1387 , SysTools.FileOption "" output_fn
1389 ++ map SysTools.Option (
1392 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1396 ++ pkg_lib_path_opts
1400 -- -----------------------------------------------------------------------------
1403 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1404 doCpp dflags raw include_cc_opts input_fn output_fn = do
1405 let hscpp_opts = getOpts dflags opt_P
1406 let cmdline_include_paths = includePaths dflags
1408 pkg_include_dirs <- getPackageIncludePath dflags []
1409 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1410 (cmdline_include_paths ++ pkg_include_dirs)
1412 let verb = getVerbFlag dflags
1415 | not include_cc_opts = []
1416 | otherwise = (optc ++ md_c_flags)
1418 optc = getOpts dflags opt_c
1419 (md_c_flags, _) = machdepCCOpts dflags
1421 let cpp_prog args | raw = SysTools.runCpp dflags args
1422 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1425 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1426 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1427 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1428 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1429 -- remember, in code we *compile*, the HOST is the same our TARGET,
1430 -- and BUILD is the same as our HOST.
1432 cpp_prog ([SysTools.Option verb]
1433 ++ map SysTools.Option include_paths
1434 ++ map SysTools.Option hsSourceCppOpts
1435 ++ map SysTools.Option hscpp_opts
1436 ++ map SysTools.Option cc_opts
1437 ++ map SysTools.Option target_defs
1438 ++ [ SysTools.Option "-x"
1439 , SysTools.Option "c"
1440 , SysTools.Option input_fn
1441 -- We hackily use Option instead of FileOption here, so that the file
1442 -- name is not back-slashed on Windows. cpp is capable of
1443 -- dealing with / in filenames, so it works fine. Furthermore
1444 -- if we put in backslashes, cpp outputs #line directives
1445 -- with *double* backslashes. And that in turn means that
1446 -- our error messages get double backslashes in them.
1447 -- In due course we should arrange that the lexer deals
1448 -- with these \\ escapes properly.
1449 , SysTools.Option "-o"
1450 , SysTools.FileOption "" output_fn
1453 cHaskell1Version = "5" -- i.e., Haskell 98
1455 -- Default CPP defines in Haskell source
1457 [ "-D__HASKELL1__="++cHaskell1Version
1458 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1460 , "-D__CONCURRENT_HASKELL__"
1464 -- -----------------------------------------------------------------------------
1467 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1468 hscNextPhase dflags HsBootFile hsc_lang = StopLn
1469 hscNextPhase dflags other hsc_lang =
1472 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1474 HscNothing -> StopLn
1475 HscInterpreted -> StopLn
1479 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1480 hscMaybeAdjustTarget dflags stop other current_hsc_lang
1483 keep_hc = dopt Opt_KeepHcFiles dflags
1485 -- don't change the lang if we're interpreting
1486 | current_hsc_lang == HscInterpreted = current_hsc_lang
1488 -- force -fvia-C if we are being asked for a .hc file
1489 | HCc <- stop = HscC
1491 -- otherwise, stick to the plan
1492 | otherwise = current_hsc_lang
1494 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
1495 -- The split prefix and number of files