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, 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 = return (CompOK details iface Nothing)
161 = do stub_unlinked <- getStubLinkable hasStub
162 (hs_unlinked, unlinked_time) <-
165 -> return ([], ms_hs_date mod_summary)
166 -- We're in --make mode: finish the compilation pipeline.
168 -> do runPipeline StopLn dflags (output_fn,Nothing)
172 -- The object filename comes from the ModLocation
173 o_time <- getModificationTime object_filename
174 return ([DotO object_filename], o_time)
175 let linkable = LM unlinked_time this_mod
176 (hs_unlinked ++ stub_unlinked)
177 return (CompOK details iface (Just linkable))
179 handleInterpreted (InteractiveNoRecomp, iface, details)
180 = ASSERT (isJust maybe_old_linkable)
181 return (CompOK details iface maybe_old_linkable)
182 handleInterpreted (InteractiveRecomp hasStub comp_bc, iface, details)
183 = do stub_unlinked <- getStubLinkable hasStub
184 let hs_unlinked = [BCOs comp_bc]
185 unlinked_time = ms_hs_date mod_summary
186 -- Why do we use the timestamp of the source file here,
187 -- rather than the current time? This works better in
188 -- the case where the local clock is out of sync
189 -- with the filesystem's clock. It's just as accurate:
190 -- if the source is modified, then the linkable will
192 let linkable = LM unlinked_time this_mod
193 (hs_unlinked ++ stub_unlinked)
194 return (CompOK details iface (Just linkable))
196 let runCompiler compiler handle
197 = do mbResult <- compiler hsc_env' mod_summary
198 source_unchanged old_iface
199 (Just (mod_index, nmods))
201 Nothing -> return CompErrs
202 Just result -> handle result
205 HscInterpreted | not (isHsBoot src_flavour) -- We can't compile boot files to
206 -- bytecode so don't even try.
207 -> runCompiler hscCompileInteractive handleInterpreted
209 -> runCompiler hscCompileNothing handleBatch
211 -> runCompiler hscCompileBatch handleBatch
213 -----------------------------------------------------------------------------
214 -- stub .h and .c files (for foreign export support)
216 -- The _stub.c file is derived from the haskell source file, possibly taking
217 -- into account the -stubdir option.
219 -- Consequently, we derive the _stub.o filename from the haskell object
222 -- This isn't necessarily the same as the object filename we
223 -- would get if we just compiled the _stub.c file using the pipeline.
226 -- ghc src/A.hs -odir obj
228 -- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
229 -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
232 compileStub :: DynFlags -> Module -> ModLocation -> IO FilePath
233 compileStub dflags mod location = do
234 let (o_base, o_ext) = splitFilename (ml_obj_file location)
235 stub_o = o_base ++ "_stub" `joinFileExt` o_ext
237 -- compile the _stub.c file w/ gcc
238 let (stub_c,_) = mkStubPaths dflags (moduleName mod) location
239 runPipeline StopLn dflags (stub_c,Nothing) Nothing
240 (SpecificFile stub_o) Nothing{-no ModLocation-}
245 -- ---------------------------------------------------------------------------
248 link :: GhcLink -- interactive or batch
249 -> DynFlags -- dynamic flags
250 -> Bool -- attempt linking in batch mode?
251 -> HomePackageTable -- what to link
254 -- For the moment, in the batch linker, we don't bother to tell doLink
255 -- which packages to link -- it just tries all that are available.
256 -- batch_attempt_linking should only be *looked at* in batch mode. It
257 -- should only be True if the upsweep was successful and someone
258 -- exports main, i.e., we have good reason to believe that linking
262 link LinkInMemory dflags batch_attempt_linking hpt
263 = do -- Not Linking...(demand linker will do the job)
267 link NoLink dflags batch_attempt_linking hpt
270 link LinkBinary dflags batch_attempt_linking hpt
271 | batch_attempt_linking
274 home_mod_infos = eltsUFM hpt
276 -- the packages we depend on
277 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
279 -- the linkables to link
280 linkables = map (expectJust "link".hm_linkable) home_mod_infos
282 debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
284 -- check for the -no-link flag
285 if isNoLink (ghcLink dflags)
286 then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
290 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
291 obj_files = concatMap getOfiles linkables
293 exe_file = exeFileName dflags
295 -- if the modification time on the executable is later than the
296 -- modification times on all of the objects, then omit linking
297 -- (unless the -no-recomp flag was given).
298 e_exe_time <- IO.try $ getModificationTime exe_file
300 | Left _ <- e_exe_time = True
301 | Right t <- e_exe_time =
302 any (t <) (map linkableTime linkables)
304 if not (dopt Opt_ForceRecomp dflags) && not linking_needed
305 then do debugTraceMsg dflags 2 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
309 debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
312 -- Don't showPass in Batch mode; doLink will do that for us.
313 let link = case ghcLink dflags of
314 LinkBinary -> linkBinary
315 LinkDynLib -> linkDynLib
316 link dflags obj_files pkg_deps
318 debugTraceMsg dflags 3 (text "link: done")
320 -- linkBinary only returns if it succeeds
324 = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
325 text " Main.main not exported; not linking.")
329 -- -----------------------------------------------------------------------------
330 -- Compile files in one-shot mode.
332 oneShot :: DynFlags -> Phase -> [(String, Maybe Phase)] -> IO ()
333 oneShot dflags stop_phase srcs = do
334 o_files <- mapM (compileFile dflags stop_phase) srcs
335 doLink dflags stop_phase o_files
337 compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
338 compileFile dflags stop_phase (src, mb_phase) = do
339 exists <- doesFileExist src
341 throwDyn (CmdLineError ("does not exist: " ++ src))
344 split = dopt Opt_SplitObjs dflags
345 mb_o_file = outputFile dflags
346 ghc_link = ghcLink dflags -- Set by -c or -no-link
348 -- When linking, the -o argument refers to the linker's output.
349 -- otherwise, we use it as the name for the pipeline's output.
351 | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent
352 -- -o foo applies to linker
353 | Just o_file <- mb_o_file = SpecificFile o_file
354 -- -o foo applies to the file we are compiling now
355 | otherwise = Persistent
357 stop_phase' = case stop_phase of
358 As | split -> SplitAs
361 (_, out_file) <- runPipeline stop_phase' dflags
362 (src, mb_phase) Nothing output
363 Nothing{-no ModLocation-}
367 doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
368 doLink dflags stop_phase o_files
369 | not (isStopLn stop_phase)
370 = return () -- We stopped before the linking phase
373 = case ghcLink dflags of
375 LinkBinary -> linkBinary dflags o_files link_pkgs
376 LinkDynLib -> linkDynLib dflags o_files []
378 -- Always link in the haskell98 package for static linking. Other
379 -- packages have to be specified via the -package flag.
380 link_pkgs = [haskell98PackageId]
383 -- ---------------------------------------------------------------------------
384 -- Run a compilation pipeline, consisting of multiple phases.
386 -- This is the interface to the compilation pipeline, which runs
387 -- a series of compilation steps on a single source file, specifying
388 -- at which stage to stop.
390 -- The DynFlags can be modified by phases in the pipeline (eg. by
391 -- GHC_OPTIONS pragmas), and the changes affect later phases in the
396 -- output should be to a temporary file: we're going to
397 -- run more compilation steps on this output later
399 -- we want a persistent file, i.e. a file in the current directory
400 -- derived from the input filename, but with the appropriate extension.
401 -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
402 | SpecificFile FilePath
403 -- the output must go into the specified file.
406 :: Phase -- When to stop
407 -> DynFlags -- Dynamic flags
408 -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
409 -> Maybe FilePath -- original basename (if different from ^^^)
410 -> PipelineOutput -- Output filename
411 -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
412 -> IO (DynFlags, FilePath) -- (final flags, output filename)
414 runPipeline stop_phase dflags (input_fn, mb_phase) mb_basename output maybe_loc
416 let (input_basename, suffix) = splitFilename input_fn
417 basename | Just b <- mb_basename = b
418 | otherwise = input_basename
420 -- If we were given a -x flag, then use that phase to start from
421 start_phase = fromMaybe (startPhase suffix) mb_phase
423 -- We want to catch cases of "you can't get there from here" before
424 -- we start the pipeline, because otherwise it will just run off the
427 -- There is a partial ordering on phases, where A < B iff A occurs
428 -- before B in a normal compilation pipeline.
430 when (not (start_phase `happensBefore` stop_phase)) $
432 ("cannot compile this file to desired target: "
435 -- this is a function which will be used to calculate output file names
436 -- as we go along (we partially apply it to some of its inputs here)
437 let get_output_fn = getOutputFilename stop_phase output basename
439 -- Execute the pipeline...
440 (dflags', output_fn, maybe_loc) <-
441 pipeLoop dflags start_phase stop_phase input_fn
442 basename suffix get_output_fn maybe_loc
444 -- Sometimes, a compilation phase doesn't actually generate any output
445 -- (eg. the CPP phase when -fcpp is not turned on). If we end on this
446 -- stage, but we wanted to keep the output, then we have to explicitly
447 -- copy the file, remembering to prepend a {-# LINE #-} pragma so that
448 -- further compilation stages can tell what the original filename was.
451 return (dflags', output_fn)
453 do final_fn <- get_output_fn dflags' stop_phase maybe_loc
454 when (final_fn /= output_fn) $ do
455 let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
456 line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
457 copyWithHeader dflags msg line_prag output_fn final_fn
458 return (dflags', final_fn)
462 pipeLoop :: DynFlags -> Phase -> Phase
463 -> FilePath -> String -> Suffix
464 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
466 -> IO (DynFlags, FilePath, Maybe ModLocation)
468 pipeLoop dflags phase stop_phase
469 input_fn orig_basename orig_suff
470 orig_get_output_fn maybe_loc
472 | phase `eqPhase` stop_phase -- All done
473 = return (dflags, input_fn, maybe_loc)
475 | not (phase `happensBefore` stop_phase)
476 -- Something has gone wrong. We'll try to cover all the cases when
477 -- this could happen, so if we reach here it is a panic.
478 -- eg. it might happen if the -C flag is used on a source file that
479 -- has {-# OPTIONS -fasm #-}.
480 = panic ("pipeLoop: at phase " ++ show phase ++
481 " but I wanted to stop at phase " ++ show stop_phase)
484 = do { (next_phase, dflags', maybe_loc, output_fn)
485 <- runPhase phase stop_phase dflags orig_basename
486 orig_suff input_fn orig_get_output_fn maybe_loc
487 ; pipeLoop dflags' next_phase stop_phase output_fn
488 orig_basename orig_suff orig_get_output_fn maybe_loc }
491 :: Phase -> PipelineOutput -> String
492 -> DynFlags -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
493 getOutputFilename stop_phase output basename
496 func dflags next_phase maybe_location
497 | is_last_phase, Persistent <- output = persistent_fn
498 | is_last_phase, SpecificFile f <- output = return f
499 | keep_this_output = persistent_fn
500 | otherwise = newTempName dflags suffix
503 odir = objectDir dflags
504 osuf = objectSuf dflags
505 keep_hc = dopt Opt_KeepHcFiles dflags
506 keep_raw_s = dopt Opt_KeepRawSFiles dflags
507 keep_s = dopt Opt_KeepSFiles dflags
509 myPhaseInputExt HCc = hcsuf
510 myPhaseInputExt StopLn = osuf
511 myPhaseInputExt other = phaseInputExt other
513 is_last_phase = next_phase `eqPhase` stop_phase
515 -- sometimes, we keep output from intermediate stages
519 Mangle | keep_raw_s -> True
521 HCc | keep_hc -> True
524 suffix = myPhaseInputExt next_phase
526 -- persistent object files get put in odir
528 | StopLn <- next_phase = return odir_persistent
529 | otherwise = return persistent
531 persistent = basename `joinFileExt` suffix
534 | Just loc <- maybe_location = ml_obj_file loc
535 | Just d <- odir = d `joinFileName` persistent
536 | otherwise = persistent
539 -- -----------------------------------------------------------------------------
540 -- Each phase in the pipeline returns the next phase to execute, and the
541 -- name of the file in which the output was placed.
543 -- We must do things dynamically this way, because we often don't know
544 -- what the rest of the phases will be until part-way through the
545 -- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
546 -- of a source file can change the latter stages of the pipeline from
547 -- taking the via-C route to using the native code generator.
549 runPhase :: Phase -- Do this phase first
550 -> Phase -- Stop just before this phase
552 -> String -- basename of original input source
553 -> String -- its extension
554 -> FilePath -- name of file which contains the input to this phase.
555 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
556 -- how to calculate the output filename
557 -> Maybe ModLocation -- the ModLocation, if we have one
558 -> IO (Phase, -- next phase
559 DynFlags, -- new dynamic flags
560 Maybe ModLocation, -- the ModLocation, if we have one
561 FilePath) -- output filename
563 -- Invariant: the output filename always contains the output
564 -- Interesting case: Hsc when there is no recompilation to do
565 -- Then the output filename is still a .o file
567 -------------------------------------------------------------------------------
570 runPhase (Unlit sf) _stop dflags _basename _suff input_fn get_output_fn maybe_loc
571 = do let unlit_flags = getOpts dflags opt_L
572 -- The -h option passes the file name for unlit to put in a #line directive
573 output_fn <- get_output_fn dflags (Cpp sf) maybe_loc
575 SysTools.runUnlit dflags
576 (map SysTools.Option unlit_flags ++
577 [ SysTools.Option "-h"
578 , SysTools.Option input_fn
579 , SysTools.FileOption "" input_fn
580 , SysTools.FileOption "" output_fn
583 return (Cpp sf, dflags, maybe_loc, output_fn)
585 -------------------------------------------------------------------------------
586 -- Cpp phase : (a) gets OPTIONS out of file
587 -- (b) runs cpp if necessary
589 runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc
590 = do src_opts <- getOptionsFromFile input_fn
591 (dflags,unhandled_flags) <- parseDynamicFlags dflags0 (map unLoc src_opts)
592 checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff)
594 if not (dopt Opt_Cpp dflags) then
595 -- no need to preprocess CPP, just pass input file along
596 -- to the next phase of the pipeline.
597 return (HsPp sf, dflags, maybe_loc, input_fn)
599 output_fn <- get_output_fn dflags (HsPp sf) maybe_loc
600 doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
601 return (HsPp sf, dflags, maybe_loc, output_fn)
603 -------------------------------------------------------------------------------
606 runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
607 = do if not (dopt Opt_Pp dflags) then
608 -- no need to preprocess, just pass input file along
609 -- to the next phase of the pipeline.
610 return (Hsc sf, dflags, maybe_loc, input_fn)
612 let hspp_opts = getOpts dflags opt_F
613 let orig_fn = basename `joinFileExt` suff
614 output_fn <- get_output_fn dflags (Hsc sf) maybe_loc
615 SysTools.runPp dflags
616 ( [ SysTools.Option orig_fn
617 , SysTools.Option input_fn
618 , SysTools.FileOption "" output_fn
620 map SysTools.Option hspp_opts
622 return (Hsc sf, dflags, maybe_loc, output_fn)
624 -----------------------------------------------------------------------------
627 -- Compilation of a single module, in "legacy" mode (_not_ under
628 -- the direction of the compilation manager).
629 runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _maybe_loc
630 = do -- normal Hsc mode, not mkdependHS
632 -- we add the current directory (i.e. the directory in which
633 -- the .hs files resides) to the import path, since this is
634 -- what gcc does, and it's probably what you want.
635 let current_dir = directoryOf basename
637 paths = includePaths dflags0
638 dflags = dflags0 { includePaths = current_dir : paths }
640 -- gather the imports and module name
641 (hspp_buf,mod_name) <-
643 ExtCoreFile -> do { -- no explicit imports in ExtCore input.
644 ; m <- getCoreModuleName input_fn
645 ; return (Nothing, mkModuleName m) }
647 other -> do { buf <- hGetStringBuffer input_fn
648 ; (_,_,L _ mod_name) <- getImports dflags buf input_fn
649 ; return (Just buf, mod_name) }
651 -- Build a ModLocation to pass to hscMain.
652 -- The source filename is rather irrelevant by now, but it's used
653 -- by hscMain for messages. hscMain also needs
654 -- the .hi and .o filenames, and this is as good a way
655 -- as any to generate them, and better than most. (e.g. takes
656 -- into accout the -osuf flags)
657 location1 <- mkHomeModLocation2 dflags mod_name basename suff
659 -- Boot-ify it if necessary
660 let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
661 | otherwise = location1
664 -- Take -ohi into account if present
665 -- This can't be done in mkHomeModuleLocation because
666 -- it only applies to the module being compiles
667 let ohi = outputHi dflags
668 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
669 | otherwise = location2
671 -- Take -o into account if present
672 -- Very like -ohi, but we must *only* do this if we aren't linking
673 -- (If we're linking then the -o applies to the linked thing, not to
674 -- the object file for one module.)
675 -- Note the nasty duplication with the same computation in compileFile above
676 let expl_o_file = outputFile dflags
677 location4 | Just ofile <- expl_o_file
678 , isNoLink (ghcLink dflags)
679 = location3 { ml_obj_file = ofile }
680 | otherwise = location3
682 o_file = ml_obj_file location4 -- The real object file
685 -- Figure out if the source has changed, for recompilation avoidance.
687 -- Setting source_unchanged to True means that M.o seems
688 -- to be up to date wrt M.hs; so no need to recompile unless imports have
689 -- changed (which the compiler itself figures out).
690 -- Setting source_unchanged to False tells the compiler that M.o is out of
691 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
692 src_timestamp <- getModificationTime (basename `joinFileExt` suff)
694 let force_recomp = dopt Opt_ForceRecomp dflags
696 if force_recomp || not (isStopLn stop)
697 -- Set source_unchanged to False unconditionally if
698 -- (a) recompilation checker is off, or
699 -- (b) we aren't going all the way to .o file (e.g. ghc -S)
701 -- Otherwise look at file modification dates
702 else do o_file_exists <- doesFileExist o_file
704 then return False -- Need to recompile
705 else do t2 <- getModificationTime o_file
706 if t2 > src_timestamp
711 let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
712 let next_phase = hscNextPhase dflags src_flavour hsc_lang
713 output_fn <- get_output_fn dflags next_phase (Just location4)
715 let dflags' = dflags { hscTarget = hsc_lang,
716 hscOutName = output_fn,
717 extCoreName = basename ++ ".hcr" }
719 hsc_env <- newHscEnv dflags'
721 -- Tell the finder cache about this module
722 mod <- addHomeModuleToFinder hsc_env mod_name location4
724 -- Make the ModSummary to hand to hscMain
726 unused_field = panic "runPhase:ModSummary field"
727 -- Some fields are not looked at by hscMain
728 mod_summary = ModSummary { ms_mod = mod,
729 ms_hsc_src = src_flavour,
730 ms_hspp_file = input_fn,
731 ms_hspp_opts = dflags,
732 ms_hspp_buf = hspp_buf,
733 ms_location = location4,
734 ms_hs_date = src_timestamp,
735 ms_obj_date = Nothing,
736 ms_imps = unused_field,
737 ms_srcimps = unused_field }
740 mbResult <- hscCompileOneShot hsc_env
741 mod_summary source_unchanged
743 Nothing -- No "module i of n" progress info
746 Nothing -> throwDyn (PhaseFailed "hsc" (ExitFailure 1))
748 -> do SysTools.touch dflags' "Touching object file" o_file
749 -- The .o file must have a later modification date
750 -- than the source file (else we wouldn't be in HscNoRecomp)
751 -- but we touch it anyway, to keep 'make' happy (we think).
752 return (StopLn, dflags', Just location4, o_file)
753 Just (HscRecomp hasStub)
755 do stub_o <- compileStub dflags' mod location4
756 consIORef v_Ld_inputs stub_o
757 -- In the case of hs-boot files, generate a dummy .o-boot
758 -- stamp file for the benefit of Make
759 when (isHsBoot src_flavour) $
760 SysTools.touch dflags' "Touching object file" o_file
761 return (next_phase, dflags', Just location4, output_fn)
763 -----------------------------------------------------------------------------
766 runPhase CmmCpp stop dflags basename suff input_fn get_output_fn maybe_loc
768 output_fn <- get_output_fn dflags Cmm maybe_loc
769 doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
770 return (Cmm, dflags, maybe_loc, output_fn)
772 runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc
774 let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
775 let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
776 output_fn <- get_output_fn dflags next_phase maybe_loc
778 let dflags' = dflags { hscTarget = hsc_lang,
779 hscOutName = output_fn,
780 extCoreName = basename ++ ".hcr" }
782 ok <- hscCmmFile dflags' input_fn
784 when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1))
786 return (next_phase, dflags, maybe_loc, output_fn)
788 -----------------------------------------------------------------------------
791 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
792 -- way too many hacks, and I can't say I've ever used it anyway.
794 runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc
795 | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc
796 = do let cc_opts = getOpts dflags opt_c
797 hcc = cc_phase `eqPhase` HCc
799 let cmdline_include_paths = includePaths dflags
801 -- HC files have the dependent packages stamped into them
802 pkgs <- if hcc then getHCFilePackages input_fn else return []
804 -- add package include paths even if we're just compiling .c
805 -- files; this is the Value Add(TM) that using ghc instead of
807 pkg_include_dirs <- getPackageIncludePath dflags pkgs
808 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
809 (cmdline_include_paths ++ pkg_include_dirs)
811 let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
812 let pic_c_flags = picCCOpts dflags
814 let verb = getVerbFlag dflags
816 pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs
818 let split_objs = dopt Opt_SplitObjs dflags
819 split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
822 let excessPrecision = dopt Opt_ExcessPrecision dflags
824 let cc_opt | optLevel dflags >= 2 = "-O2"
829 let mangle = dopt Opt_DoAsmMangling dflags
831 | hcc && mangle = Mangle
833 output_fn <- get_output_fn dflags next_phase maybe_loc
838 -- on x86 the floating point regs have greater precision
839 -- than a double, which leads to unpredictable results.
840 -- By default, we turn this off with -ffloat-store unless
841 -- the user specified -fexcess-precision.
842 (if excessPrecision then [] else [ "-ffloat-store" ]) ++
844 -- gcc's -fstrict-aliasing allows two accesses to memory
845 -- to be considered non-aliasing if they have different types.
846 -- This interacts badly with the C code we generate, which is
847 -- very weakly typed, being derived from C--.
848 ["-fno-strict-aliasing"]
852 SysTools.runCc dflags (
853 -- force the C compiler to interpret this file as C when
854 -- compiling .hc files, by adding the -x c option.
855 -- Also useful for plain .c files, just in case GHC saw a
857 [ SysTools.Option "-x", if cc_phase `eqPhase` Ccpp
858 then SysTools.Option "c++" else SysTools.Option "c"] ++
859 [ SysTools.FileOption "" input_fn
860 , SysTools.Option "-o"
861 , SysTools.FileOption "" output_fn
863 ++ map SysTools.Option (
866 #ifdef sparc_TARGET_ARCH
867 -- We only support SparcV9 and better because V8 lacks an atomic CAS
868 -- instruction. Note that the user can still override this
869 -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
870 -- regardless of the ordering.
872 -- This is a temporary hack.
881 ++ [ verb, "-S", "-Wimplicit", cc_opt ]
882 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
887 #ifdef HAVE_GCC_HAS_WRAPV
888 -- We need consistent integer overflow (trac #952)
893 return (next_phase, dflags, maybe_loc, output_fn)
895 -- ToDo: postprocess the output from gcc
897 -----------------------------------------------------------------------------
900 runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
901 = do let mangler_opts = getOpts dflags opt_m
904 machdep_opts <- return [ show (stolen_x86_regs dflags) ]
906 machdep_opts <- return []
909 let split = dopt Opt_SplitObjs dflags
911 | split = SplitMangle
913 output_fn <- get_output_fn dflags next_phase maybe_loc
915 SysTools.runMangle dflags (map SysTools.Option mangler_opts
916 ++ [ SysTools.FileOption "" input_fn
917 , SysTools.FileOption "" output_fn
919 ++ map SysTools.Option machdep_opts)
921 return (next_phase, dflags, maybe_loc, output_fn)
923 -----------------------------------------------------------------------------
926 runPhase SplitMangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
927 = do -- tmp_pfx is the prefix used for the split .s files
928 -- We also use it as the file to contain the no. of split .s files (sigh)
929 split_s_prefix <- SysTools.newTempName dflags "split"
930 let n_files_fn = split_s_prefix
932 SysTools.runSplit dflags
933 [ SysTools.FileOption "" input_fn
934 , SysTools.FileOption "" split_s_prefix
935 , SysTools.FileOption "" n_files_fn
938 -- Save the number of split files for future references
939 s <- readFile n_files_fn
940 let n_files = read s :: Int
941 writeIORef v_Split_info (split_s_prefix, n_files)
943 -- Remember to delete all these files
944 addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
947 return (SplitAs, dflags, maybe_loc, "**splitmangle**")
948 -- we don't use the filename
950 -----------------------------------------------------------------------------
953 runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc
954 = do let as_opts = getOpts dflags opt_a
955 let cmdline_include_paths = includePaths dflags
957 output_fn <- get_output_fn dflags StopLn maybe_loc
959 -- we create directories for the object file, because it
960 -- might be a hierarchical module.
961 createDirectoryHierarchy (directoryOf output_fn)
963 SysTools.runAs dflags
964 (map SysTools.Option as_opts
965 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
966 #ifdef sparc_TARGET_ARCH
967 -- We only support SparcV9 and better because V8 lacks an atomic CAS
968 -- instruction so we have to make sure that the assembler accepts the
969 -- instruction set. Note that the user can still override this
970 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
971 -- regardless of the ordering.
973 -- This is a temporary hack.
974 ++ [ SysTools.Option "-mcpu=v9" ]
976 ++ [ SysTools.Option "-c"
977 , SysTools.FileOption "" input_fn
978 , SysTools.Option "-o"
979 , SysTools.FileOption "" output_fn
982 return (StopLn, dflags, maybe_loc, output_fn)
985 runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc
987 output_fn <- get_output_fn dflags StopLn maybe_loc
989 let (base_o, _) = splitFilename output_fn
990 split_odir = base_o ++ "_split"
991 osuf = objectSuf dflags
993 createDirectoryHierarchy split_odir
995 -- remove M_split/ *.o, because we're going to archive M_split/ *.o
996 -- later and we don't want to pick up any old objects.
997 fs <- getDirectoryContents split_odir
998 mapM_ removeFile $ map (split_odir `joinFileName`)
999 $ filter (osuf `isSuffixOf`) fs
1001 let as_opts = getOpts dflags opt_a
1003 (split_s_prefix, n) <- readIORef v_Split_info
1005 let split_s n = split_s_prefix ++ "__" ++ show n `joinFileExt` "s"
1006 split_obj n = split_odir `joinFileName`
1007 filenameOf base_o ++ "__" ++ show n
1011 = SysTools.runAs dflags
1012 (map SysTools.Option as_opts ++
1013 [ SysTools.Option "-c"
1014 , SysTools.Option "-o"
1015 , SysTools.FileOption "" (split_obj n)
1016 , SysTools.FileOption "" (split_s n)
1019 mapM_ assemble_file [1..n]
1021 -- and join the split objects into a single object file:
1022 let ld_r args = SysTools.runLink dflags ([
1023 SysTools.Option "-nostdlib",
1024 SysTools.Option "-nodefaultlibs",
1025 SysTools.Option "-Wl,-r",
1026 SysTools.Option ld_x_flag,
1027 SysTools.Option "-o",
1028 SysTools.FileOption "" output_fn ] ++ args)
1029 ld_x_flag | null cLD_X = ""
1030 | otherwise = "-Wl,-x"
1032 if cLdIsGNULd == "YES"
1034 let script = split_odir `joinFileName` "ld.script"
1036 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1037 ld_r [SysTools.FileOption "" script]
1039 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1041 return (StopLn, dflags, maybe_loc, output_fn)
1044 -----------------------------------------------------------------------------
1045 -- MoveBinary sort-of-phase
1046 -- After having produced a binary, move it somewhere else and generate a
1047 -- wrapper script calling the binary. Currently, we need this only in
1048 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
1049 -- central directory.
1050 -- This is called from linkBinary below, after linking. I haven't made it
1051 -- a separate phase to minimise interfering with other modules, and
1052 -- we don't need the generality of a phase (MoveBinary is always
1053 -- done after linking and makes only sense in a parallel setup) -- HWL
1055 runPhase_MoveBinary dflags input_fn
1057 let sysMan = pgm_sysman dflags
1058 pvm_root <- getEnv "PVM_ROOT"
1059 pvm_arch <- getEnv "PVM_ARCH"
1061 pvm_executable_base = "=" ++ input_fn
1062 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1063 -- nuke old binary; maybe use configur'ed names for cp and rm?
1064 Panic.try (removeFile pvm_executable)
1065 -- move the newly created binary into PVM land
1066 copy dflags "copying PVM executable" input_fn pvm_executable
1067 -- generate a wrapper script for running a parallel prg under PVM
1068 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1071 -- generates a Perl skript starting a parallel prg under PVM
1072 mk_pvm_wrapper_script :: String -> String -> String -> String
1073 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1075 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1076 " if $running_under_some_shell;",
1077 "# =!=!=!=!=!=!=!=!=!=!=!",
1078 "# This script is automatically generated: DO NOT EDIT!!!",
1079 "# Generated by Glasgow Haskell Compiler",
1080 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1082 "$pvm_executable = '" ++ pvm_executable ++ "';",
1083 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1084 "$SysMan = '" ++ sysMan ++ "';",
1086 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1087 "# first, some magical shortcuts to run "commands" on the binary",
1088 "# (which is hidden)",
1089 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1090 " local($cmd) = $1;",
1091 " system("$cmd $pvm_executable");",
1092 " exit(0); # all done",
1095 "# Now, run the real binary; process the args first",
1096 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1098 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1099 "@nonPVM_args = ();",
1100 "$in_RTS_args = 0;",
1102 "args: while ($a = shift(@ARGV)) {",
1103 " if ( $a eq '+RTS' ) {",
1104 " $in_RTS_args = 1;",
1105 " } elsif ( $a eq '-RTS' ) {",
1106 " $in_RTS_args = 0;",
1108 " if ( $a eq '-d' && $in_RTS_args ) {",
1110 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1111 " $nprocessors = $1;",
1112 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1113 " $nprocessors = $1;",
1115 " push(@nonPVM_args, $a);",
1119 "local($return_val) = 0;",
1120 "# Start the parallel execution by calling SysMan",
1121 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1122 "$return_val = $?;",
1123 "# ToDo: fix race condition moving files and flushing them!!",
1124 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1125 "exit($return_val);"
1128 -----------------------------------------------------------------------------
1129 -- Complain about non-dynamic flags in OPTIONS pragmas
1131 checkProcessArgsResult flags filename
1132 = do when (notNull flags) (throwDyn (ProgramError (
1133 showSDoc (hang (text filename <> char ':')
1134 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
1135 hsep (map text flags)))
1138 -----------------------------------------------------------------------------
1139 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1141 getHCFilePackages :: FilePath -> IO [PackageId]
1142 getHCFilePackages filename =
1143 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1146 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1147 return (map stringToPackageId (words rest))
1151 -----------------------------------------------------------------------------
1152 -- Static linking, of .o files
1154 -- The list of packages passed to link is the list of packages on
1155 -- which this program depends, as discovered by the compilation
1156 -- manager. It is combined with the list of packages that the user
1157 -- specifies on the command line with -package flags.
1159 -- In one-shot linking mode, we can't discover the package
1160 -- dependencies (because we haven't actually done any compilation or
1161 -- read any interface files), so the user must explicitly specify all
1164 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1165 linkBinary dflags o_files dep_packages = do
1166 let verb = getVerbFlag dflags
1167 output_fn = exeFileName dflags
1169 -- get the full list of packages to link with, by combining the
1170 -- explicit packages with the auto packages and all of their
1171 -- dependencies, and eliminating duplicates.
1173 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1174 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1176 let lib_paths = libraryPaths dflags
1177 let lib_path_opts = map ("-L"++) lib_paths
1179 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1181 #ifdef darwin_TARGET_OS
1182 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1183 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1185 let framework_paths = frameworkPaths dflags
1186 framework_path_opts = map ("-F"++) framework_paths
1188 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1189 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1191 let frameworks = cmdlineFrameworks dflags
1192 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1193 -- reverse because they're added in reverse order from the cmd line
1196 -- probably _stub.o files
1197 extra_ld_inputs <- readIORef v_Ld_inputs
1199 -- opts from -optl-<blah> (including -l<blah> options)
1200 let extra_ld_opts = getOpts dflags opt_l
1202 let ways = wayNames dflags
1204 -- Here are some libs that need to be linked at the *end* of
1205 -- the command line, because they contain symbols that are referred to
1206 -- by the RTS. We can't therefore use the ordinary way opts for these.
1208 debug_opts | WayDebug `elem` ways = [
1209 #if defined(HAVE_LIBBFD)
1216 thread_opts | WayThreaded `elem` ways = [
1217 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1220 #if defined(osf3_TARGET_OS)
1226 let (md_c_flags, _) = machdepCCOpts dflags
1227 SysTools.runLink dflags (
1228 [ SysTools.Option verb
1229 , SysTools.Option "-o"
1230 , SysTools.FileOption "" output_fn
1232 ++ map SysTools.Option (
1238 #ifdef darwin_TARGET_OS
1239 ++ framework_path_opts
1242 ++ pkg_lib_path_opts
1244 #ifdef darwin_TARGET_OS
1245 ++ pkg_framework_path_opts
1246 ++ pkg_framework_opts
1252 -- parallel only: move binary to another dir -- HWL
1253 when (WayPar `elem` ways)
1254 (do success <- runPhase_MoveBinary dflags output_fn
1255 if success then return ()
1256 else throwDyn (InstallationError ("cannot move binary to PVM dir")))
1259 exeFileName :: DynFlags -> FilePath
1261 | Just s <- outputFile dflags =
1262 #if defined(mingw32_HOST_OS)
1263 if null (suffixOf s)
1264 then s `joinFileExt` "exe"
1270 #if defined(mingw32_HOST_OS)
1276 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1277 linkDynLib dflags o_files dep_packages = do
1278 let verb = getVerbFlag dflags
1279 let static = opt_Static
1280 let no_hs_main = dopt Opt_NoHsMain dflags
1281 let o_file = outputFile dflags
1283 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1284 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1286 let lib_paths = libraryPaths dflags
1287 let lib_path_opts = map ("-L"++) lib_paths
1289 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1291 -- probably _stub.o files
1292 extra_ld_inputs <- readIORef v_Ld_inputs
1294 let (md_c_flags, _) = machdepCCOpts dflags
1295 #if defined(mingw32_HOST_OS)
1296 -----------------------------------------------------------------------------
1298 -----------------------------------------------------------------------------
1300 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1302 -- opts from -optdll-<blah>
1303 let extra_ld_opts = getOpts dflags opt_dll
1305 let pstate = pkgState dflags
1306 rts_pkg = getPackageDetails pstate rtsPackageId
1307 base_pkg = getPackageDetails pstate basePackageId
1309 let extra_os = if static || no_hs_main
1311 else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o",
1312 head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ]
1313 SysTools.runMkDLL dflags
1314 ([ SysTools.Option verb
1315 , SysTools.Option "-o"
1316 , SysTools.FileOption "" output_fn
1318 ++ map SysTools.Option (
1322 ++ [ "--target=i386-mingw32" ]
1326 ++ pkg_lib_path_opts
1328 ++ (if "--def" `elem` (concatMap words extra_ld_opts)
1330 else [ "--export-all" ])
1333 -----------------------------------------------------------------------------
1335 -----------------------------------------------------------------------------
1336 -- opts from -optl-<blah>
1337 let extra_ld_opts = getOpts dflags opt_l
1338 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1340 SysTools.runLink dflags
1341 ([ SysTools.Option verb
1342 , SysTools.Option "-o"
1343 , SysTools.FileOption "" output_fn
1345 ++ map SysTools.Option (
1348 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1352 ++ pkg_lib_path_opts
1356 -- -----------------------------------------------------------------------------
1359 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1360 doCpp dflags raw include_cc_opts input_fn output_fn = do
1361 let hscpp_opts = getOpts dflags opt_P
1362 let cmdline_include_paths = includePaths dflags
1364 pkg_include_dirs <- getPackageIncludePath dflags []
1365 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1366 (cmdline_include_paths ++ pkg_include_dirs)
1368 let verb = getVerbFlag dflags
1371 | not include_cc_opts = []
1372 | otherwise = (optc ++ md_c_flags)
1374 optc = getOpts dflags opt_c
1375 (md_c_flags, _) = machdepCCOpts dflags
1377 let cpp_prog args | raw = SysTools.runCpp dflags args
1378 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1381 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1382 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1383 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1384 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1385 -- remember, in code we *compile*, the HOST is the same our TARGET,
1386 -- and BUILD is the same as our HOST.
1388 cpp_prog ([SysTools.Option verb]
1389 ++ map SysTools.Option include_paths
1390 ++ map SysTools.Option hsSourceCppOpts
1391 ++ map SysTools.Option hscpp_opts
1392 ++ map SysTools.Option cc_opts
1393 ++ map SysTools.Option target_defs
1394 ++ [ SysTools.Option "-x"
1395 , SysTools.Option "c"
1396 , SysTools.Option input_fn
1397 -- We hackily use Option instead of FileOption here, so that the file
1398 -- name is not back-slashed on Windows. cpp is capable of
1399 -- dealing with / in filenames, so it works fine. Furthermore
1400 -- if we put in backslashes, cpp outputs #line directives
1401 -- with *double* backslashes. And that in turn means that
1402 -- our error messages get double backslashes in them.
1403 -- In due course we should arrange that the lexer deals
1404 -- with these \\ escapes properly.
1405 , SysTools.Option "-o"
1406 , SysTools.FileOption "" output_fn
1409 cHaskell1Version = "5" -- i.e., Haskell 98
1411 -- Default CPP defines in Haskell source
1413 [ "-D__HASKELL1__="++cHaskell1Version
1414 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1416 , "-D__CONCURRENT_HASKELL__"
1420 -- -----------------------------------------------------------------------------
1423 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1424 hscNextPhase dflags HsBootFile hsc_lang = StopLn
1425 hscNextPhase dflags other hsc_lang =
1428 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1430 HscNothing -> StopLn
1431 HscInterpreted -> StopLn
1435 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1436 hscMaybeAdjustTarget dflags stop HsBootFile current_hsc_lang
1437 = HscNothing -- No output (other than Foo.hi-boot) for hs-boot files
1438 hscMaybeAdjustTarget dflags stop other current_hsc_lang
1441 keep_hc = dopt Opt_KeepHcFiles dflags
1443 -- don't change the lang if we're interpreting
1444 | current_hsc_lang == HscInterpreted = current_hsc_lang
1446 -- force -fvia-C if we are being asked for a .hc file
1447 | HCc <- stop = HscC
1449 -- otherwise, stick to the plan
1450 | otherwise = current_hsc_lang
1452 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
1453 -- The split prefix and number of files