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) <-
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 ; (_,_,L _ mod_name) <- getImports dflags buf input_fn
651 ; return (Just buf, mod_name) }
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,
738 ms_imps = unused_field,
739 ms_srcimps = unused_field }
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 let pic_c_flags = picCCOpts dflags
816 let verb = getVerbFlag dflags
818 pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs
820 let split_objs = dopt Opt_SplitObjs dflags
821 split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
824 let excessPrecision = dopt Opt_ExcessPrecision dflags
826 let cc_opt | optLevel dflags >= 2 = "-O2"
831 let mangle = dopt Opt_DoAsmMangling dflags
833 | hcc && mangle = Mangle
835 output_fn <- get_output_fn dflags next_phase maybe_loc
840 -- on x86 the floating point regs have greater precision
841 -- than a double, which leads to unpredictable results.
842 -- By default, we turn this off with -ffloat-store unless
843 -- the user specified -fexcess-precision.
844 (if excessPrecision then [] else [ "-ffloat-store" ]) ++
846 -- gcc's -fstrict-aliasing allows two accesses to memory
847 -- to be considered non-aliasing if they have different types.
848 -- This interacts badly with the C code we generate, which is
849 -- very weakly typed, being derived from C--.
850 ["-fno-strict-aliasing"]
854 SysTools.runCc dflags (
855 -- force the C compiler to interpret this file as C when
856 -- compiling .hc files, by adding the -x c option.
857 -- Also useful for plain .c files, just in case GHC saw a
859 [ SysTools.Option "-x", if cc_phase `eqPhase` Ccpp
860 then SysTools.Option "c++" else SysTools.Option "c"] ++
861 [ SysTools.FileOption "" input_fn
862 , SysTools.Option "-o"
863 , SysTools.FileOption "" output_fn
865 ++ map SysTools.Option (
868 #ifdef sparc_TARGET_ARCH
869 -- We only support SparcV9 and better because V8 lacks an atomic CAS
870 -- instruction. Note that the user can still override this
871 -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
872 -- regardless of the ordering.
874 -- This is a temporary hack.
883 ++ [ verb, "-S", "-Wimplicit", cc_opt ]
884 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
889 #ifdef HAVE_GCC_HAS_WRAPV
890 -- We need consistent integer overflow (trac #952)
895 return (next_phase, dflags, maybe_loc, output_fn)
897 -- ToDo: postprocess the output from gcc
899 -----------------------------------------------------------------------------
902 runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
903 = do let mangler_opts = getOpts dflags opt_m
906 machdep_opts <- return [ show (stolen_x86_regs dflags) ]
908 machdep_opts <- return []
911 let split = dopt Opt_SplitObjs dflags
913 | split = SplitMangle
915 output_fn <- get_output_fn dflags next_phase maybe_loc
917 SysTools.runMangle dflags (map SysTools.Option mangler_opts
918 ++ [ SysTools.FileOption "" input_fn
919 , SysTools.FileOption "" output_fn
921 ++ map SysTools.Option machdep_opts)
923 return (next_phase, dflags, maybe_loc, output_fn)
925 -----------------------------------------------------------------------------
928 runPhase SplitMangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
929 = do -- tmp_pfx is the prefix used for the split .s files
930 -- We also use it as the file to contain the no. of split .s files (sigh)
931 split_s_prefix <- SysTools.newTempName dflags "split"
932 let n_files_fn = split_s_prefix
934 SysTools.runSplit dflags
935 [ SysTools.FileOption "" input_fn
936 , SysTools.FileOption "" split_s_prefix
937 , SysTools.FileOption "" n_files_fn
940 -- Save the number of split files for future references
941 s <- readFile n_files_fn
942 let n_files = read s :: Int
943 writeIORef v_Split_info (split_s_prefix, n_files)
945 -- Remember to delete all these files
946 addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
949 return (SplitAs, dflags, maybe_loc, "**splitmangle**")
950 -- we don't use the filename
952 -----------------------------------------------------------------------------
955 runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc
956 = do let as_opts = getOpts dflags opt_a
957 let cmdline_include_paths = includePaths dflags
959 output_fn <- get_output_fn dflags StopLn maybe_loc
961 -- we create directories for the object file, because it
962 -- might be a hierarchical module.
963 createDirectoryHierarchy (directoryOf output_fn)
965 SysTools.runAs dflags
966 (map SysTools.Option as_opts
967 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
968 #ifdef sparc_TARGET_ARCH
969 -- We only support SparcV9 and better because V8 lacks an atomic CAS
970 -- instruction so we have to make sure that the assembler accepts the
971 -- instruction set. Note that the user can still override this
972 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
973 -- regardless of the ordering.
975 -- This is a temporary hack.
976 ++ [ SysTools.Option "-mcpu=v9" ]
978 ++ [ SysTools.Option "-c"
979 , SysTools.FileOption "" input_fn
980 , SysTools.Option "-o"
981 , SysTools.FileOption "" output_fn
984 return (StopLn, dflags, maybe_loc, output_fn)
987 runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc
989 output_fn <- get_output_fn dflags StopLn maybe_loc
991 let (base_o, _) = splitFilename output_fn
992 split_odir = base_o ++ "_split"
993 osuf = objectSuf dflags
995 createDirectoryHierarchy split_odir
997 -- remove M_split/ *.o, because we're going to archive M_split/ *.o
998 -- later and we don't want to pick up any old objects.
999 fs <- getDirectoryContents split_odir
1000 mapM_ removeFile $ map (split_odir `joinFileName`)
1001 $ filter (osuf `isSuffixOf`) fs
1003 let as_opts = getOpts dflags opt_a
1005 (split_s_prefix, n) <- readIORef v_Split_info
1007 let split_s n = split_s_prefix ++ "__" ++ show n `joinFileExt` "s"
1008 split_obj n = split_odir `joinFileName`
1009 filenameOf base_o ++ "__" ++ show n
1013 = SysTools.runAs dflags
1014 (map SysTools.Option as_opts ++
1015 [ SysTools.Option "-c"
1016 , SysTools.Option "-o"
1017 , SysTools.FileOption "" (split_obj n)
1018 , SysTools.FileOption "" (split_s n)
1021 mapM_ assemble_file [1..n]
1023 -- and join the split objects into a single object file:
1024 let ld_r args = SysTools.runLink dflags ([
1025 SysTools.Option "-nostdlib",
1026 SysTools.Option "-nodefaultlibs",
1027 SysTools.Option "-Wl,-r",
1028 SysTools.Option ld_x_flag,
1029 SysTools.Option "-o",
1030 SysTools.FileOption "" output_fn ] ++ args)
1031 ld_x_flag | null cLD_X = ""
1032 | otherwise = "-Wl,-x"
1034 if cLdIsGNULd == "YES"
1036 let script = split_odir `joinFileName` "ld.script"
1038 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1039 ld_r [SysTools.FileOption "" script]
1041 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1043 return (StopLn, dflags, maybe_loc, output_fn)
1046 -----------------------------------------------------------------------------
1047 -- MoveBinary sort-of-phase
1048 -- After having produced a binary, move it somewhere else and generate a
1049 -- wrapper script calling the binary. Currently, we need this only in
1050 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
1051 -- central directory.
1052 -- This is called from linkBinary below, after linking. I haven't made it
1053 -- a separate phase to minimise interfering with other modules, and
1054 -- we don't need the generality of a phase (MoveBinary is always
1055 -- done after linking and makes only sense in a parallel setup) -- HWL
1057 runPhase_MoveBinary dflags input_fn
1059 let sysMan = pgm_sysman dflags
1060 pvm_root <- getEnv "PVM_ROOT"
1061 pvm_arch <- getEnv "PVM_ARCH"
1063 pvm_executable_base = "=" ++ input_fn
1064 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1065 -- nuke old binary; maybe use configur'ed names for cp and rm?
1066 Panic.try (removeFile pvm_executable)
1067 -- move the newly created binary into PVM land
1068 copy dflags "copying PVM executable" input_fn pvm_executable
1069 -- generate a wrapper script for running a parallel prg under PVM
1070 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1073 -- generates a Perl skript starting a parallel prg under PVM
1074 mk_pvm_wrapper_script :: String -> String -> String -> String
1075 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1077 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1078 " if $running_under_some_shell;",
1079 "# =!=!=!=!=!=!=!=!=!=!=!",
1080 "# This script is automatically generated: DO NOT EDIT!!!",
1081 "# Generated by Glasgow Haskell Compiler",
1082 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1084 "$pvm_executable = '" ++ pvm_executable ++ "';",
1085 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1086 "$SysMan = '" ++ sysMan ++ "';",
1088 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1089 "# first, some magical shortcuts to run "commands" on the binary",
1090 "# (which is hidden)",
1091 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1092 " local($cmd) = $1;",
1093 " system("$cmd $pvm_executable");",
1094 " exit(0); # all done",
1097 "# Now, run the real binary; process the args first",
1098 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1100 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1101 "@nonPVM_args = ();",
1102 "$in_RTS_args = 0;",
1104 "args: while ($a = shift(@ARGV)) {",
1105 " if ( $a eq '+RTS' ) {",
1106 " $in_RTS_args = 1;",
1107 " } elsif ( $a eq '-RTS' ) {",
1108 " $in_RTS_args = 0;",
1110 " if ( $a eq '-d' && $in_RTS_args ) {",
1112 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1113 " $nprocessors = $1;",
1114 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1115 " $nprocessors = $1;",
1117 " push(@nonPVM_args, $a);",
1121 "local($return_val) = 0;",
1122 "# Start the parallel execution by calling SysMan",
1123 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1124 "$return_val = $?;",
1125 "# ToDo: fix race condition moving files and flushing them!!",
1126 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1127 "exit($return_val);"
1130 -----------------------------------------------------------------------------
1131 -- Complain about non-dynamic flags in OPTIONS pragmas
1133 checkProcessArgsResult flags filename
1134 = do when (notNull flags) (throwDyn (ProgramError (
1135 showSDoc (hang (text filename <> char ':')
1136 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
1137 hsep (map text flags)))
1140 -----------------------------------------------------------------------------
1141 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1143 getHCFilePackages :: FilePath -> IO [PackageId]
1144 getHCFilePackages filename =
1145 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1148 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1149 return (map stringToPackageId (words rest))
1153 -----------------------------------------------------------------------------
1154 -- Static linking, of .o files
1156 -- The list of packages passed to link is the list of packages on
1157 -- which this program depends, as discovered by the compilation
1158 -- manager. It is combined with the list of packages that the user
1159 -- specifies on the command line with -package flags.
1161 -- In one-shot linking mode, we can't discover the package
1162 -- dependencies (because we haven't actually done any compilation or
1163 -- read any interface files), so the user must explicitly specify all
1166 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1167 linkBinary dflags o_files dep_packages = do
1168 let verb = getVerbFlag dflags
1169 output_fn = exeFileName dflags
1171 -- get the full list of packages to link with, by combining the
1172 -- explicit packages with the auto packages and all of their
1173 -- dependencies, and eliminating duplicates.
1175 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1176 let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
1177 get_pkg_lib_path_opts l | opt_HardwireLibPaths && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1178 | otherwise = ["-L" ++ l]
1180 let lib_paths = libraryPaths dflags
1181 let lib_path_opts = map ("-L"++) lib_paths
1183 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1185 #ifdef darwin_TARGET_OS
1186 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1187 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1189 let framework_paths = frameworkPaths dflags
1190 framework_path_opts = map ("-F"++) framework_paths
1192 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1193 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1195 let frameworks = cmdlineFrameworks dflags
1196 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1197 -- reverse because they're added in reverse order from the cmd line
1200 -- probably _stub.o files
1201 extra_ld_inputs <- readIORef v_Ld_inputs
1203 -- opts from -optl-<blah> (including -l<blah> options)
1204 let extra_ld_opts = getOpts dflags opt_l
1206 let ways = wayNames dflags
1208 -- Here are some libs that need to be linked at the *end* of
1209 -- the command line, because they contain symbols that are referred to
1210 -- by the RTS. We can't therefore use the ordinary way opts for these.
1212 debug_opts | WayDebug `elem` ways = [
1213 #if defined(HAVE_LIBBFD)
1220 thread_opts | WayThreaded `elem` ways = [
1221 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1224 #if defined(osf3_TARGET_OS)
1230 let (md_c_flags, _) = machdepCCOpts dflags
1231 SysTools.runLink dflags (
1232 [ SysTools.Option verb
1233 , SysTools.Option "-o"
1234 , SysTools.FileOption "" output_fn
1236 ++ map SysTools.Option (
1242 #ifdef darwin_TARGET_OS
1243 ++ framework_path_opts
1246 ++ pkg_lib_path_opts
1248 #ifdef darwin_TARGET_OS
1249 ++ pkg_framework_path_opts
1250 ++ pkg_framework_opts
1256 -- parallel only: move binary to another dir -- HWL
1257 when (WayPar `elem` ways)
1258 (do success <- runPhase_MoveBinary dflags output_fn
1259 if success then return ()
1260 else throwDyn (InstallationError ("cannot move binary to PVM dir")))
1263 exeFileName :: DynFlags -> FilePath
1265 | Just s <- outputFile dflags =
1266 #if defined(mingw32_HOST_OS)
1267 if null (suffixOf s)
1268 then s `joinFileExt` "exe"
1274 #if defined(mingw32_HOST_OS)
1280 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1281 linkDynLib dflags o_files dep_packages = do
1282 let verb = getVerbFlag dflags
1283 let static = opt_Static
1284 let no_hs_main = dopt Opt_NoHsMain dflags
1285 let o_file = outputFile dflags
1287 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1288 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1290 let lib_paths = libraryPaths dflags
1291 let lib_path_opts = map ("-L"++) lib_paths
1293 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1295 -- probably _stub.o files
1296 extra_ld_inputs <- readIORef v_Ld_inputs
1298 let (md_c_flags, _) = machdepCCOpts dflags
1299 #if defined(mingw32_HOST_OS)
1300 -----------------------------------------------------------------------------
1302 -----------------------------------------------------------------------------
1304 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1306 -- opts from -optdll-<blah>
1307 let extra_ld_opts = getOpts dflags opt_dll
1309 let pstate = pkgState dflags
1310 rts_pkg = getPackageDetails pstate rtsPackageId
1311 base_pkg = getPackageDetails pstate basePackageId
1313 let extra_os = if static || no_hs_main
1315 else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o",
1316 head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ]
1317 SysTools.runMkDLL dflags
1318 ([ SysTools.Option verb
1319 , SysTools.Option "-o"
1320 , SysTools.FileOption "" output_fn
1322 ++ map SysTools.Option (
1326 ++ [ "--target=i386-mingw32" ]
1330 ++ pkg_lib_path_opts
1332 ++ (if "--def" `elem` (concatMap words extra_ld_opts)
1334 else [ "--export-all" ])
1337 -----------------------------------------------------------------------------
1339 -----------------------------------------------------------------------------
1340 -- opts from -optl-<blah>
1341 let extra_ld_opts = getOpts dflags opt_l
1342 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1344 SysTools.runLink dflags
1345 ([ SysTools.Option verb
1346 , SysTools.Option "-o"
1347 , SysTools.FileOption "" output_fn
1349 ++ map SysTools.Option (
1352 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1356 ++ pkg_lib_path_opts
1360 -- -----------------------------------------------------------------------------
1363 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1364 doCpp dflags raw include_cc_opts input_fn output_fn = do
1365 let hscpp_opts = getOpts dflags opt_P
1366 let cmdline_include_paths = includePaths dflags
1368 pkg_include_dirs <- getPackageIncludePath dflags []
1369 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1370 (cmdline_include_paths ++ pkg_include_dirs)
1372 let verb = getVerbFlag dflags
1375 | not include_cc_opts = []
1376 | otherwise = (optc ++ md_c_flags)
1378 optc = getOpts dflags opt_c
1379 (md_c_flags, _) = machdepCCOpts dflags
1381 let cpp_prog args | raw = SysTools.runCpp dflags args
1382 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1385 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1386 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1387 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1388 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1389 -- remember, in code we *compile*, the HOST is the same our TARGET,
1390 -- and BUILD is the same as our HOST.
1392 cpp_prog ([SysTools.Option verb]
1393 ++ map SysTools.Option include_paths
1394 ++ map SysTools.Option hsSourceCppOpts
1395 ++ map SysTools.Option hscpp_opts
1396 ++ map SysTools.Option cc_opts
1397 ++ map SysTools.Option target_defs
1398 ++ [ SysTools.Option "-x"
1399 , SysTools.Option "c"
1400 , SysTools.Option input_fn
1401 -- We hackily use Option instead of FileOption here, so that the file
1402 -- name is not back-slashed on Windows. cpp is capable of
1403 -- dealing with / in filenames, so it works fine. Furthermore
1404 -- if we put in backslashes, cpp outputs #line directives
1405 -- with *double* backslashes. And that in turn means that
1406 -- our error messages get double backslashes in them.
1407 -- In due course we should arrange that the lexer deals
1408 -- with these \\ escapes properly.
1409 , SysTools.Option "-o"
1410 , SysTools.FileOption "" output_fn
1413 cHaskell1Version = "5" -- i.e., Haskell 98
1415 -- Default CPP defines in Haskell source
1417 [ "-D__HASKELL1__="++cHaskell1Version
1418 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1420 , "-D__CONCURRENT_HASKELL__"
1424 -- -----------------------------------------------------------------------------
1427 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1428 hscNextPhase dflags HsBootFile hsc_lang = StopLn
1429 hscNextPhase dflags other hsc_lang =
1432 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1434 HscNothing -> StopLn
1435 HscInterpreted -> StopLn
1439 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1440 hscMaybeAdjustTarget dflags stop other current_hsc_lang
1443 keep_hc = dopt Opt_KeepHcFiles dflags
1445 -- don't change the lang if we're interpreting
1446 | current_hsc_lang == HscInterpreted = current_hsc_lang
1448 -- force -fvia-C if we are being asked for a .hc file
1449 | HCc <- stop = HscC
1451 -- otherwise, stick to the plan
1452 | otherwise = current_hsc_lang
1454 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
1455 -- The split prefix and number of files