1 {-# OPTIONS -fno-cse #-}
2 -- -fno-cse is needed for GLOBAL_VAR's to behave properly
4 -----------------------------------------------------------------------------
8 -- (c) The University of Glasgow 2005
10 -----------------------------------------------------------------------------
12 module DriverPipeline (
13 -- Run a series of compilation steps in a pipeline, for a
14 -- collection of source files.
17 -- Interfaces for the batch-mode driver
20 -- Interfaces for the compilation manager (interpreted/batch-mode)
27 #include "HsVersions.h"
38 import LazyUniqFM ( eltsUFM )
41 import StaticFlags ( v_Ld_inputs, opt_Static, WayName(..) )
45 import StringBuffer ( hGetStringBuffer )
46 import BasicTypes ( SuccessFlag(..) )
47 import Maybes ( expectJust )
48 import ParserCoreUtils ( getCoreModuleName )
54 import Data.IORef ( readIORef, writeIORef, IORef )
55 import GHC.Exts ( Int(..) )
56 import System.Directory
57 import System.FilePath
59 import System.IO.Error as IO
61 import Data.List ( isSuffixOf )
64 import System.Environment
66 -- ---------------------------------------------------------------------------
69 -- Just preprocess a file, put the result in a temp. file (used by the
70 -- compilation manager during the summary phase).
72 -- We return the augmented DynFlags, because they contain the result
73 -- of slurping in the OPTIONS pragmas
75 preprocess :: HscEnv -> (FilePath, Maybe Phase) -> IO (DynFlags, FilePath)
76 preprocess hsc_env (filename, mb_phase) =
77 ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
78 runPipeline anyHsc hsc_env (filename, mb_phase)
79 Nothing Temporary Nothing{-no ModLocation-}
81 -- ---------------------------------------------------------------------------
84 -- Compile a single module, under the control of the compilation manager.
86 -- This is the interface between the compilation manager and the
87 -- compiler proper (hsc), where we deal with tedious details like
88 -- reading the OPTIONS pragma from the source file, and passing the
89 -- output of hsc through the C compiler.
91 -- NB. No old interface can also mean that the source has changed.
94 -> ModSummary -- summary for module being compiled
95 -> Int -> Int -- module N of M
96 -> Maybe ModIface -- old interface, if we have one
97 -> Maybe Linkable -- old linkable, if we have one
98 -> IO (Maybe HomeModInfo) -- the complete HomeModInfo, if successful
100 compile hsc_env0 summary mod_index nmods mb_old_iface maybe_old_linkable
102 let dflags0 = ms_hspp_opts summary
103 this_mod = ms_mod summary
104 src_flavour = ms_hsc_src summary
105 location = ms_location summary
106 input_fn = expectJust "compile:hs" (ml_hs_file location)
107 input_fnpp = ms_hspp_file summary
109 debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
111 let basename = dropExtension input_fn
113 -- We add the directory in which the .hs files resides) to the import path.
114 -- This is needed when we try to compile the .hc file later, if it
115 -- imports a _stub.h file that we created here.
116 let current_dir = case takeDirectory basename of
117 "" -> "." -- XXX Hack
119 old_paths = includePaths dflags0
120 dflags = dflags0 { includePaths = current_dir : old_paths }
121 hsc_env = hsc_env0 {hsc_dflags = dflags}
123 -- Figure out what lang we're generating
124 let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
125 -- ... and what the next phase should be
126 let next_phase = hscNextPhase dflags src_flavour hsc_lang
127 -- ... and what file to generate the output into
128 output_fn <- getOutputFilename next_phase
129 Temporary basename dflags next_phase (Just location)
131 let dflags' = dflags { hscTarget = hsc_lang,
132 hscOutName = output_fn,
133 extCoreName = basename ++ ".hcr" }
134 let hsc_env' = hsc_env { hsc_dflags = dflags' }
136 -- -fforce-recomp should also work with --make
137 let force_recomp = dopt Opt_ForceRecomp dflags
138 source_unchanged = isJust maybe_old_linkable && not force_recomp
139 object_filename = ml_obj_file location
141 let getStubLinkable False = return []
143 = do stub_o <- compileStub hsc_env' this_mod location
144 return [ DotO stub_o ]
146 handleBatch HscNoRecomp
147 = ASSERT (isJust maybe_old_linkable)
148 return maybe_old_linkable
150 handleBatch (HscRecomp hasStub)
151 | isHsBoot src_flavour
152 = do when (isObjectTarget hsc_lang) $ -- interpreted reaches here too
153 SysTools.touch dflags' "Touching object file"
155 return maybe_old_linkable
158 = do stub_unlinked <- getStubLinkable hasStub
159 (hs_unlinked, unlinked_time) <-
162 -> return ([], ms_hs_date summary)
163 -- We're in --make mode: finish the compilation pipeline.
165 -> do runPipeline StopLn hsc_env' (output_fn,Nothing)
169 -- The object filename comes from the ModLocation
170 o_time <- getModificationTime object_filename
171 return ([DotO object_filename], o_time)
172 let linkable = LM unlinked_time this_mod
173 (hs_unlinked ++ stub_unlinked)
174 return (Just linkable)
176 handleInterpreted InteractiveNoRecomp
177 = ASSERT (isJust maybe_old_linkable)
178 return maybe_old_linkable
179 handleInterpreted (InteractiveRecomp hasStub comp_bc modBreaks)
180 = do stub_unlinked <- getStubLinkable hasStub
181 let hs_unlinked = [BCOs comp_bc modBreaks]
182 unlinked_time = ms_hs_date summary
183 -- Why do we use the timestamp of the source file here,
184 -- rather than the current time? This works better in
185 -- the case where the local clock is out of sync
186 -- with the filesystem's clock. It's just as accurate:
187 -- if the source is modified, then the linkable will
189 let linkable = LM unlinked_time this_mod
190 (hs_unlinked ++ stub_unlinked)
191 return (Just linkable)
193 let -- runCompiler :: Compiler result -> (result -> Maybe Linkable)
194 -- -> IO (Maybe HomeModInfo)
195 runCompiler compiler handle
196 = do mbResult <- compiler hsc_env' summary source_unchanged mb_old_iface
197 (Just (mod_index, nmods))
199 Nothing -> return Nothing
200 Just (result, iface, details) -> do
201 linkable <- handle result
202 return (Just HomeModInfo{ hm_details = details,
204 hm_linkable = linkable })
208 | isHsBoot src_flavour ->
209 runCompiler hscCompileNothing handleBatch
211 runCompiler hscCompileInteractive handleInterpreted
213 runCompiler hscCompileNothing handleBatch
215 runCompiler hscCompileBatch handleBatch
217 -----------------------------------------------------------------------------
218 -- stub .h and .c files (for foreign export support)
220 -- The _stub.c file is derived from the haskell source file, possibly taking
221 -- into account the -stubdir option.
223 -- Consequently, we derive the _stub.o filename from the haskell object
226 -- This isn't necessarily the same as the object filename we
227 -- would get if we just compiled the _stub.c file using the pipeline.
230 -- ghc src/A.hs -odir obj
232 -- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
233 -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
236 compileStub :: HscEnv -> Module -> ModLocation -> IO FilePath
237 compileStub hsc_env mod location = do
238 let (o_base, o_ext) = splitExtension (ml_obj_file location)
239 stub_o = (o_base ++ "_stub") <.> o_ext
241 -- compile the _stub.c file w/ gcc
242 let (stub_c,_,_) = mkStubPaths (hsc_dflags hsc_env) (moduleName mod) location
243 runPipeline StopLn hsc_env (stub_c,Nothing) Nothing
244 (SpecificFile stub_o) Nothing{-no ModLocation-}
249 -- ---------------------------------------------------------------------------
252 link :: GhcLink -- interactive or batch
253 -> DynFlags -- dynamic flags
254 -> Bool -- attempt linking in batch mode?
255 -> HomePackageTable -- what to link
258 -- For the moment, in the batch linker, we don't bother to tell doLink
259 -- which packages to link -- it just tries all that are available.
260 -- batch_attempt_linking should only be *looked at* in batch mode. It
261 -- should only be True if the upsweep was successful and someone
262 -- exports main, i.e., we have good reason to believe that linking
266 link LinkInMemory _ _ _
267 = do -- Not Linking...(demand linker will do the job)
274 link LinkBinary dflags batch_attempt_linking hpt
275 | batch_attempt_linking
278 home_mod_infos = eltsUFM hpt
280 -- the packages we depend on
281 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
283 -- the linkables to link
284 linkables = map (expectJust "link".hm_linkable) home_mod_infos
286 debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
288 -- check for the -no-link flag
289 if isNoLink (ghcLink dflags)
290 then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
294 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
295 obj_files = concatMap getOfiles linkables
297 exe_file = exeFileName dflags
299 linking_needed <- linkingNeeded dflags linkables pkg_deps
301 if not (dopt Opt_ForceRecomp dflags) && not linking_needed
302 then do debugTraceMsg dflags 2 (text exe_file <+> ptext (sLit "is up to date, linking not required."))
306 debugTraceMsg dflags 1 (ptext (sLit "Linking") <+> text exe_file
309 -- Don't showPass in Batch mode; doLink will do that for us.
310 let link = case ghcLink dflags of
311 LinkBinary -> linkBinary
312 LinkDynLib -> linkDynLib
313 other -> panicBadLink other
314 link dflags obj_files pkg_deps
316 debugTraceMsg dflags 3 (text "link: done")
318 -- linkBinary only returns if it succeeds
322 = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
323 text " Main.main not exported; not linking.")
326 -- warning suppression
327 link other _ _ _ = panicBadLink other
329 panicBadLink :: GhcLink -> a
330 panicBadLink other = panic ("link: GHC not built to link this way: " ++
334 linkingNeeded :: DynFlags -> [Linkable] -> [PackageId] -> IO Bool
335 linkingNeeded dflags linkables pkg_deps = do
336 -- if the modification time on the executable is later than the
337 -- modification times on all of the objects and libraries, then omit
338 -- linking (unless the -fforce-recomp flag was given).
339 let exe_file = exeFileName dflags
340 e_exe_time <- IO.try $ getModificationTime exe_file
342 Left _ -> return True
344 -- first check object files and extra_ld_inputs
345 extra_ld_inputs <- readIORef v_Ld_inputs
346 e_extra_times <- mapM (IO.try . getModificationTime) extra_ld_inputs
347 let (errs,extra_times) = splitEithers e_extra_times
348 let obj_times = map linkableTime linkables ++ extra_times
349 if not (null errs) || any (t <) obj_times
353 -- next, check libraries. XXX this only checks Haskell libraries,
354 -- not extra_libraries or -l things from the command line.
355 let pkg_map = pkgIdMap (pkgState dflags)
356 pkg_hslibs = [ (libraryDirs c, lib)
357 | Just c <- map (lookupPackage pkg_map) pkg_deps,
358 lib <- packageHsLibs dflags c ]
360 pkg_libfiles <- mapM (uncurry findHSLib) pkg_hslibs
361 if any isNothing pkg_libfiles then return True else do
362 e_lib_times <- mapM (IO.try . getModificationTime)
363 (catMaybes pkg_libfiles)
364 let (lib_errs,lib_times) = splitEithers e_lib_times
365 if not (null lib_errs) || any (t <) lib_times
369 findHSLib :: [String] -> String -> IO (Maybe FilePath)
370 findHSLib dirs lib = do
371 let batch_lib_file = "lib" ++ lib <.> "a"
372 found <- filterM doesFileExist (map (</> batch_lib_file) dirs)
375 (x:_) -> return (Just x)
377 -- -----------------------------------------------------------------------------
378 -- Compile files in one-shot mode.
380 oneShot :: HscEnv -> Phase -> [(String, Maybe Phase)] -> IO ()
381 oneShot hsc_env stop_phase srcs = do
382 o_files <- mapM (compileFile hsc_env stop_phase) srcs
383 doLink (hsc_dflags hsc_env) stop_phase o_files
385 compileFile :: HscEnv -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
386 compileFile hsc_env stop_phase (src, mb_phase) = do
387 exists <- doesFileExist src
389 ghcError (CmdLineError ("does not exist: " ++ src))
392 dflags = hsc_dflags hsc_env
393 split = dopt Opt_SplitObjs dflags
394 mb_o_file = outputFile dflags
395 ghc_link = ghcLink dflags -- Set by -c or -no-link
397 -- When linking, the -o argument refers to the linker's output.
398 -- otherwise, we use it as the name for the pipeline's output.
400 | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent
401 -- -o foo applies to linker
402 | Just o_file <- mb_o_file = SpecificFile o_file
403 -- -o foo applies to the file we are compiling now
404 | otherwise = Persistent
406 stop_phase' = case stop_phase of
407 As | split -> SplitAs
410 (_, out_file) <- runPipeline stop_phase' hsc_env
411 (src, mb_phase) Nothing output
412 Nothing{-no ModLocation-}
416 doLink :: DynFlags -> Phase -> [FilePath] -> IO ()
417 doLink dflags stop_phase o_files
418 | not (isStopLn stop_phase)
419 = return () -- We stopped before the linking phase
422 = case ghcLink dflags of
424 LinkBinary -> linkBinary dflags o_files link_pkgs
425 LinkDynLib -> linkDynLib dflags o_files []
426 other -> panicBadLink other
428 -- Always link in the haskell98 package for static linking. Other
429 -- packages have to be specified via the -package flag.
431 | dopt Opt_AutoLinkPackages dflags = [haskell98PackageId]
435 -- ---------------------------------------------------------------------------
436 -- Run a compilation pipeline, consisting of multiple phases.
438 -- This is the interface to the compilation pipeline, which runs
439 -- a series of compilation steps on a single source file, specifying
440 -- at which stage to stop.
442 -- The DynFlags can be modified by phases in the pipeline (eg. by
443 -- GHC_OPTIONS pragmas), and the changes affect later phases in the
448 -- output should be to a temporary file: we're going to
449 -- run more compilation steps on this output later
451 -- we want a persistent file, i.e. a file in the current directory
452 -- derived from the input filename, but with the appropriate extension.
453 -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
454 | SpecificFile FilePath
455 -- the output must go into the specified file.
458 :: Phase -- When to stop
459 -> HscEnv -- Compilation environment
460 -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
461 -> Maybe FilePath -- original basename (if different from ^^^)
462 -> PipelineOutput -- Output filename
463 -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
464 -> IO (DynFlags, FilePath) -- (final flags, output filename)
466 runPipeline stop_phase hsc_env0 (input_fn, mb_phase) mb_basename output maybe_loc
468 let dflags0 = hsc_dflags hsc_env0
469 (input_basename, suffix) = splitExtension input_fn
470 suffix' = drop 1 suffix -- strip off the .
471 basename | Just b <- mb_basename = b
472 | otherwise = input_basename
474 -- Decide where dump files should go based on the pipeline output
475 dflags = dflags0 { dumpPrefix = Just (basename ++ ".") }
476 hsc_env = hsc_env0 {hsc_dflags = dflags}
478 -- If we were given a -x flag, then use that phase to start from
479 start_phase = fromMaybe (startPhase suffix') mb_phase
481 -- We want to catch cases of "you can't get there from here" before
482 -- we start the pipeline, because otherwise it will just run off the
485 -- There is a partial ordering on phases, where A < B iff A occurs
486 -- before B in a normal compilation pipeline.
488 when (not (start_phase `happensBefore` stop_phase)) $
490 ("cannot compile this file to desired target: "
493 -- this is a function which will be used to calculate output file names
494 -- as we go along (we partially apply it to some of its inputs here)
495 let get_output_fn = getOutputFilename stop_phase output basename
497 -- Execute the pipeline...
498 (dflags', output_fn, maybe_loc) <-
499 pipeLoop hsc_env start_phase stop_phase input_fn
500 basename suffix' get_output_fn maybe_loc
502 -- Sometimes, a compilation phase doesn't actually generate any output
503 -- (eg. the CPP phase when -fcpp is not turned on). If we end on this
504 -- stage, but we wanted to keep the output, then we have to explicitly
505 -- copy the file, remembering to prepend a {-# LINE #-} pragma so that
506 -- further compilation stages can tell what the original filename was.
509 return (dflags', output_fn)
511 do final_fn <- get_output_fn dflags' stop_phase maybe_loc
512 when (final_fn /= output_fn) $ do
513 let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
514 line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
515 copyWithHeader dflags msg line_prag output_fn final_fn
516 return (dflags', final_fn)
520 pipeLoop :: HscEnv -> Phase -> Phase
521 -> FilePath -> String -> Suffix
522 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
524 -> IO (DynFlags, FilePath, Maybe ModLocation)
526 pipeLoop hsc_env phase stop_phase
527 input_fn orig_basename orig_suff
528 orig_get_output_fn maybe_loc
530 | phase `eqPhase` stop_phase -- All done
531 = return (hsc_dflags hsc_env, input_fn, maybe_loc)
533 | not (phase `happensBefore` stop_phase)
534 -- Something has gone wrong. We'll try to cover all the cases when
535 -- this could happen, so if we reach here it is a panic.
536 -- eg. it might happen if the -C flag is used on a source file that
537 -- has {-# OPTIONS -fasm #-}.
538 = panic ("pipeLoop: at phase " ++ show phase ++
539 " but I wanted to stop at phase " ++ show stop_phase)
542 = do (next_phase, dflags', maybe_loc, output_fn)
543 <- runPhase phase stop_phase hsc_env orig_basename
544 orig_suff input_fn orig_get_output_fn maybe_loc
545 let hsc_env' = hsc_env {hsc_dflags = dflags'}
546 pipeLoop hsc_env' next_phase stop_phase output_fn
547 orig_basename orig_suff orig_get_output_fn maybe_loc
550 :: Phase -> PipelineOutput -> String
551 -> DynFlags -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
552 getOutputFilename stop_phase output basename
555 func dflags next_phase maybe_location
556 | is_last_phase, Persistent <- output = persistent_fn
557 | is_last_phase, SpecificFile f <- output = return f
558 | keep_this_output = persistent_fn
559 | otherwise = newTempName dflags suffix
562 odir = objectDir dflags
563 osuf = objectSuf dflags
564 keep_hc = dopt Opt_KeepHcFiles dflags
565 keep_raw_s = dopt Opt_KeepRawSFiles dflags
566 keep_s = dopt Opt_KeepSFiles dflags
568 myPhaseInputExt HCc = hcsuf
569 myPhaseInputExt StopLn = osuf
570 myPhaseInputExt other = phaseInputExt other
572 is_last_phase = next_phase `eqPhase` stop_phase
574 -- sometimes, we keep output from intermediate stages
578 Mangle | keep_raw_s -> True
580 HCc | keep_hc -> True
583 suffix = myPhaseInputExt next_phase
585 -- persistent object files get put in odir
587 | StopLn <- next_phase = return odir_persistent
588 | otherwise = return persistent
590 persistent = basename <.> suffix
593 | Just loc <- maybe_location = ml_obj_file loc
594 | Just d <- odir = d </> persistent
595 | otherwise = persistent
598 -- -----------------------------------------------------------------------------
599 -- Each phase in the pipeline returns the next phase to execute, and the
600 -- name of the file in which the output was placed.
602 -- We must do things dynamically this way, because we often don't know
603 -- what the rest of the phases will be until part-way through the
604 -- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
605 -- of a source file can change the latter stages of the pipeline from
606 -- taking the via-C route to using the native code generator.
608 runPhase :: Phase -- Do this phase first
609 -> Phase -- Stop just before this phase
611 -> String -- basename of original input source
612 -> String -- its extension
613 -> FilePath -- name of file which contains the input to this phase.
614 -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
615 -- how to calculate the output filename
616 -> Maybe ModLocation -- the ModLocation, if we have one
617 -> IO (Phase, -- next phase
618 DynFlags, -- new dynamic flags
619 Maybe ModLocation, -- the ModLocation, if we have one
620 FilePath) -- output filename
622 -- Invariant: the output filename always contains the output
623 -- Interesting case: Hsc when there is no recompilation to do
624 -- Then the output filename is still a .o file
626 -------------------------------------------------------------------------------
629 runPhase (Unlit sf) _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
631 let dflags = hsc_dflags hsc_env
632 output_fn <- get_output_fn dflags (Cpp sf) maybe_loc
634 let unlit_flags = getOpts dflags opt_L
635 flags = map SysTools.Option unlit_flags ++
636 [ -- The -h option passes the file name for unlit to
637 -- put in a #line directive
639 -- cpp interprets \b etc as escape sequences,
640 -- so we use / for filenames in pragmas
641 , SysTools.Option $ reslash Forwards $ normalise input_fn
642 , SysTools.FileOption "" input_fn
643 , SysTools.FileOption "" output_fn
646 SysTools.runUnlit dflags flags
648 return (Cpp sf, dflags, maybe_loc, output_fn)
650 -------------------------------------------------------------------------------
651 -- Cpp phase : (a) gets OPTIONS out of file
652 -- (b) runs cpp if necessary
654 runPhase (Cpp sf) _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
655 = do let dflags0 = hsc_dflags hsc_env
656 src_opts <- getOptionsFromFile dflags0 input_fn
657 (dflags, unhandled_flags, warns) <- parseDynamicFlags dflags0 src_opts
658 handleFlagWarnings dflags warns
659 checkProcessArgsResult unhandled_flags
661 if not (dopt Opt_Cpp dflags) then
662 -- no need to preprocess CPP, just pass input file along
663 -- to the next phase of the pipeline.
664 return (HsPp sf, dflags, maybe_loc, input_fn)
666 output_fn <- get_output_fn dflags (HsPp sf) maybe_loc
667 doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
668 return (HsPp sf, dflags, maybe_loc, output_fn)
670 -------------------------------------------------------------------------------
673 runPhase (HsPp sf) _stop hsc_env basename suff input_fn get_output_fn maybe_loc
674 = do let dflags = hsc_dflags hsc_env
675 if not (dopt Opt_Pp dflags) then
676 -- no need to preprocess, just pass input file along
677 -- to the next phase of the pipeline.
678 return (Hsc sf, dflags, maybe_loc, input_fn)
680 let hspp_opts = getOpts dflags opt_F
681 let orig_fn = basename <.> suff
682 output_fn <- get_output_fn dflags (Hsc sf) maybe_loc
683 SysTools.runPp dflags
684 ( [ SysTools.Option orig_fn
685 , SysTools.Option input_fn
686 , SysTools.FileOption "" output_fn
688 map SysTools.Option hspp_opts
690 return (Hsc sf, dflags, maybe_loc, output_fn)
692 -----------------------------------------------------------------------------
695 -- Compilation of a single module, in "legacy" mode (_not_ under
696 -- the direction of the compilation manager).
697 runPhase (Hsc src_flavour) stop hsc_env basename suff input_fn get_output_fn _maybe_loc
698 = do -- normal Hsc mode, not mkdependHS
699 let dflags0 = hsc_dflags hsc_env
701 -- we add the current directory (i.e. the directory in which
702 -- the .hs files resides) to the include path, since this is
703 -- what gcc does, and it's probably what you want.
704 let current_dir = case takeDirectory basename of
705 "" -> "." -- XXX Hack
708 paths = includePaths dflags0
709 dflags = dflags0 { includePaths = current_dir : paths }
711 -- gather the imports and module name
712 (hspp_buf,mod_name,imps,src_imps) <-
714 ExtCoreFile -> do { -- no explicit imports in ExtCore input.
715 ; m <- getCoreModuleName input_fn
716 ; return (Nothing, mkModuleName m, [], []) }
718 _ -> do { buf <- hGetStringBuffer input_fn
719 ; (src_imps,imps,L _ mod_name) <- getImports dflags buf input_fn (basename <.> suff)
720 ; return (Just buf, mod_name, imps, src_imps) }
722 -- Build a ModLocation to pass to hscMain.
723 -- The source filename is rather irrelevant by now, but it's used
724 -- by hscMain for messages. hscMain also needs
725 -- the .hi and .o filenames, and this is as good a way
726 -- as any to generate them, and better than most. (e.g. takes
727 -- into accout the -osuf flags)
728 location1 <- mkHomeModLocation2 dflags mod_name basename suff
730 -- Boot-ify it if necessary
731 let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
732 | otherwise = location1
735 -- Take -ohi into account if present
736 -- This can't be done in mkHomeModuleLocation because
737 -- it only applies to the module being compiles
738 let ohi = outputHi dflags
739 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
740 | otherwise = location2
742 -- Take -o into account if present
743 -- Very like -ohi, but we must *only* do this if we aren't linking
744 -- (If we're linking then the -o applies to the linked thing, not to
745 -- the object file for one module.)
746 -- Note the nasty duplication with the same computation in compileFile above
747 let expl_o_file = outputFile dflags
748 location4 | Just ofile <- expl_o_file
749 , isNoLink (ghcLink dflags)
750 = location3 { ml_obj_file = ofile }
751 | otherwise = location3
753 o_file = ml_obj_file location4 -- The real object file
756 -- Figure out if the source has changed, for recompilation avoidance.
758 -- Setting source_unchanged to True means that M.o seems
759 -- to be up to date wrt M.hs; so no need to recompile unless imports have
760 -- changed (which the compiler itself figures out).
761 -- Setting source_unchanged to False tells the compiler that M.o is out of
762 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
763 src_timestamp <- getModificationTime (basename <.> suff)
765 let force_recomp = dopt Opt_ForceRecomp dflags
767 if force_recomp || not (isStopLn stop)
768 -- Set source_unchanged to False unconditionally if
769 -- (a) recompilation checker is off, or
770 -- (b) we aren't going all the way to .o file (e.g. ghc -S)
772 -- Otherwise look at file modification dates
773 else do o_file_exists <- doesFileExist o_file
775 then return False -- Need to recompile
776 else do t2 <- getModificationTime o_file
777 if t2 > src_timestamp
782 let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
783 let next_phase = hscNextPhase dflags src_flavour hsc_lang
784 output_fn <- get_output_fn dflags next_phase (Just location4)
786 let dflags' = dflags { hscTarget = hsc_lang,
787 hscOutName = output_fn,
788 extCoreName = basename ++ ".hcr" }
790 let hsc_env' = hsc_env {hsc_dflags = dflags'}
792 -- Tell the finder cache about this module
793 mod <- addHomeModuleToFinder hsc_env' mod_name location4
795 -- Make the ModSummary to hand to hscMain
797 mod_summary = ModSummary { ms_mod = mod,
798 ms_hsc_src = src_flavour,
799 ms_hspp_file = input_fn,
800 ms_hspp_opts = dflags,
801 ms_hspp_buf = hspp_buf,
802 ms_location = location4,
803 ms_hs_date = src_timestamp,
804 ms_obj_date = Nothing,
806 ms_srcimps = src_imps }
809 mbResult <- hscCompileOneShot hsc_env'
810 mod_summary source_unchanged
812 Nothing -- No "module i of n" progress info
815 Nothing -> ghcError (PhaseFailed "hsc" (ExitFailure 1))
817 -> do SysTools.touch dflags' "Touching object file" o_file
818 -- The .o file must have a later modification date
819 -- than the source file (else we wouldn't be in HscNoRecomp)
820 -- but we touch it anyway, to keep 'make' happy (we think).
821 return (StopLn, dflags', Just location4, o_file)
822 Just (HscRecomp hasStub)
824 do stub_o <- compileStub hsc_env' mod location4
825 consIORef v_Ld_inputs stub_o
826 -- In the case of hs-boot files, generate a dummy .o-boot
827 -- stamp file for the benefit of Make
828 when (isHsBoot src_flavour) $
829 SysTools.touch dflags' "Touching object file" o_file
830 return (next_phase, dflags', Just location4, output_fn)
832 -----------------------------------------------------------------------------
835 runPhase CmmCpp _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
837 let dflags = hsc_dflags hsc_env
838 output_fn <- get_output_fn dflags Cmm maybe_loc
839 doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
840 return (Cmm, dflags, maybe_loc, output_fn)
842 runPhase Cmm stop hsc_env basename _ input_fn get_output_fn maybe_loc
844 let dflags = hsc_dflags hsc_env
845 let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
846 let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
847 output_fn <- get_output_fn dflags next_phase maybe_loc
849 let dflags' = dflags { hscTarget = hsc_lang,
850 hscOutName = output_fn,
851 extCoreName = basename ++ ".hcr" }
852 let hsc_env' = hsc_env {hsc_dflags = dflags'}
854 ok <- hscCmmFile hsc_env' input_fn
856 when (not ok) $ ghcError (PhaseFailed "cmm" (ExitFailure 1))
858 return (next_phase, dflags, maybe_loc, output_fn)
860 -----------------------------------------------------------------------------
863 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
864 -- way too many hacks, and I can't say I've ever used it anyway.
866 runPhase cc_phase _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
867 | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc
868 = do let dflags = hsc_dflags hsc_env
869 let cc_opts = getOpts dflags opt_c
870 hcc = cc_phase `eqPhase` HCc
872 let cmdline_include_paths = includePaths dflags
874 -- HC files have the dependent packages stamped into them
875 pkgs <- if hcc then getHCFilePackages input_fn else return []
877 -- add package include paths even if we're just compiling .c
878 -- files; this is the Value Add(TM) that using ghc instead of
880 pkg_include_dirs <- getPackageIncludePath dflags pkgs
881 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
882 (cmdline_include_paths ++ pkg_include_dirs)
884 let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
885 gcc_extra_viac_flags <- getExtraViaCOpts dflags
886 let pic_c_flags = picCCOpts dflags
888 let verb = getVerbFlag dflags
890 -- cc-options are not passed when compiling .hc files. Our
891 -- hc code doesn't not #include any header files anyway, so these
892 -- options aren't necessary.
894 if cc_phase `eqPhase` HCc
896 else getPackageExtraCcOpts dflags pkgs
898 #ifdef darwin_TARGET_OS
899 pkg_framework_paths <- getPackageFrameworkPath dflags pkgs
900 let cmdline_framework_paths = frameworkPaths dflags
901 let framework_paths = map ("-F"++)
902 (cmdline_framework_paths ++ pkg_framework_paths)
905 let split_objs = dopt Opt_SplitObjs dflags
906 split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
909 let cc_opt | optLevel dflags >= 2 = "-O2"
914 let mangle = dopt Opt_DoAsmMangling dflags
916 | hcc && mangle = Mangle
918 output_fn <- get_output_fn dflags next_phase maybe_loc
923 -- on x86 the floating point regs have greater precision
924 -- than a double, which leads to unpredictable results.
925 -- By default, we turn this off with -ffloat-store unless
926 -- the user specified -fexcess-precision.
927 (if dopt Opt_ExcessPrecision dflags
929 else [ "-ffloat-store" ]) ++
931 -- gcc's -fstrict-aliasing allows two accesses to memory
932 -- to be considered non-aliasing if they have different types.
933 -- This interacts badly with the C code we generate, which is
934 -- very weakly typed, being derived from C--.
935 ["-fno-strict-aliasing"]
939 SysTools.runCc dflags (
940 -- force the C compiler to interpret this file as C when
941 -- compiling .hc files, by adding the -x c option.
942 -- Also useful for plain .c files, just in case GHC saw a
944 [ SysTools.Option "-x", if cc_phase `eqPhase` Ccpp
945 then SysTools.Option "c++" else SysTools.Option "c"] ++
946 [ SysTools.FileOption "" input_fn
947 , SysTools.Option "-o"
948 , SysTools.FileOption "" output_fn
950 ++ map SysTools.Option (
953 #ifdef sparc_TARGET_ARCH
954 -- We only support SparcV9 and better because V8 lacks an atomic CAS
955 -- instruction. Note that the user can still override this
956 -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
957 -- regardless of the ordering.
959 -- This is a temporary hack.
967 then gcc_extra_viac_flags
968 else filter (=="-fwrapv")
970 -- still want -fwrapv even for unreg'd
975 ++ [ verb, "-S", "-Wimplicit", cc_opt ]
976 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
977 #ifdef darwin_TARGET_OS
986 return (next_phase, dflags, maybe_loc, output_fn)
988 -- ToDo: postprocess the output from gcc
990 -----------------------------------------------------------------------------
993 runPhase Mangle _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
994 = do let dflags = hsc_dflags hsc_env
995 let mangler_opts = getOpts dflags opt_m
998 machdep_opts <- return [ show (stolen_x86_regs dflags) ]
1000 machdep_opts <- return []
1003 let split = dopt Opt_SplitObjs dflags
1005 | split = SplitMangle
1007 output_fn <- get_output_fn dflags next_phase maybe_loc
1009 SysTools.runMangle dflags (map SysTools.Option mangler_opts
1010 ++ [ SysTools.FileOption "" input_fn
1011 , SysTools.FileOption "" output_fn
1013 ++ map SysTools.Option machdep_opts)
1015 return (next_phase, dflags, maybe_loc, output_fn)
1017 -----------------------------------------------------------------------------
1020 runPhase SplitMangle _stop hsc_env _basename _suff input_fn _get_output_fn maybe_loc
1021 = do -- tmp_pfx is the prefix used for the split .s files
1022 -- We also use it as the file to contain the no. of split .s files (sigh)
1023 let dflags = hsc_dflags hsc_env
1024 split_s_prefix <- SysTools.newTempName dflags "split"
1025 let n_files_fn = split_s_prefix
1027 SysTools.runSplit dflags
1028 [ SysTools.FileOption "" input_fn
1029 , SysTools.FileOption "" split_s_prefix
1030 , SysTools.FileOption "" n_files_fn
1033 -- Save the number of split files for future references
1034 s <- readFile n_files_fn
1035 let n_files = read s :: Int
1036 writeIORef v_Split_info (split_s_prefix, n_files)
1038 -- Remember to delete all these files
1039 addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
1040 | n <- [1..n_files]]
1042 return (SplitAs, dflags, maybe_loc, "**splitmangle**")
1043 -- we don't use the filename
1045 -----------------------------------------------------------------------------
1048 runPhase As _stop hsc_env _basename _suff input_fn get_output_fn maybe_loc
1049 = do let dflags = hsc_dflags hsc_env
1050 let as_opts = getOpts dflags opt_a
1051 let cmdline_include_paths = includePaths dflags
1053 output_fn <- get_output_fn dflags StopLn maybe_loc
1055 -- we create directories for the object file, because it
1056 -- might be a hierarchical module.
1057 createDirectoryHierarchy (takeDirectory output_fn)
1059 SysTools.runAs dflags
1060 (map SysTools.Option as_opts
1061 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
1062 #ifdef sparc_TARGET_ARCH
1063 -- We only support SparcV9 and better because V8 lacks an atomic CAS
1064 -- instruction so we have to make sure that the assembler accepts the
1065 -- instruction set. Note that the user can still override this
1066 -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
1067 -- regardless of the ordering.
1069 -- This is a temporary hack.
1070 ++ [ SysTools.Option "-mcpu=v9" ]
1072 ++ [ SysTools.Option "-c"
1073 , SysTools.FileOption "" input_fn
1074 , SysTools.Option "-o"
1075 , SysTools.FileOption "" output_fn
1078 return (StopLn, dflags, maybe_loc, output_fn)
1081 runPhase SplitAs _stop hsc_env _basename _suff _input_fn get_output_fn maybe_loc
1083 let dflags = hsc_dflags hsc_env
1084 output_fn <- get_output_fn dflags StopLn maybe_loc
1086 let base_o = dropExtension output_fn
1087 split_odir = base_o ++ "_split"
1088 osuf = objectSuf dflags
1090 createDirectoryHierarchy split_odir
1092 -- remove M_split/ *.o, because we're going to archive M_split/ *.o
1093 -- later and we don't want to pick up any old objects.
1094 fs <- getDirectoryContents split_odir
1095 mapM_ removeFile $ map (split_odir </>) $ filter (osuf `isSuffixOf`) fs
1097 let as_opts = getOpts dflags opt_a
1099 (split_s_prefix, n) <- readIORef v_Split_info
1101 let split_s n = split_s_prefix ++ "__" ++ show n <.> "s"
1102 split_obj n = split_odir </>
1103 takeFileName base_o ++ "__" ++ show n <.> osuf
1106 = SysTools.runAs dflags
1107 (map SysTools.Option as_opts ++
1108 [ SysTools.Option "-c"
1109 , SysTools.Option "-o"
1110 , SysTools.FileOption "" (split_obj n)
1111 , SysTools.FileOption "" (split_s n)
1114 mapM_ assemble_file [1..n]
1116 -- and join the split objects into a single object file:
1117 let ld_r args = SysTools.runLink dflags ([
1118 SysTools.Option "-nostdlib",
1119 SysTools.Option "-nodefaultlibs",
1120 SysTools.Option "-Wl,-r",
1121 SysTools.Option ld_x_flag,
1122 SysTools.Option "-o",
1123 SysTools.FileOption "" output_fn ] ++ args)
1124 ld_x_flag | null cLD_X = ""
1125 | otherwise = "-Wl,-x"
1127 if cLdIsGNULd == "YES"
1129 let script = split_odir </> "ld.script"
1131 "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")"
1132 ld_r [SysTools.FileOption "" script]
1134 ld_r (map (SysTools.FileOption "" . split_obj) [1..n])
1136 return (StopLn, dflags, maybe_loc, output_fn)
1138 -- warning suppression
1139 runPhase other _stop _dflags _basename _suff _input_fn _get_output_fn _maybe_loc =
1140 panic ("runPhase: don't know how to run phase " ++ show other)
1141 -----------------------------------------------------------------------------
1142 -- MoveBinary sort-of-phase
1143 -- After having produced a binary, move it somewhere else and generate a
1144 -- wrapper script calling the binary. Currently, we need this only in
1145 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
1146 -- central directory.
1147 -- This is called from linkBinary below, after linking. I haven't made it
1148 -- a separate phase to minimise interfering with other modules, and
1149 -- we don't need the generality of a phase (MoveBinary is always
1150 -- done after linking and makes only sense in a parallel setup) -- HWL
1152 runPhase_MoveBinary :: DynFlags -> FilePath -> [PackageId] -> IO Bool
1153 runPhase_MoveBinary dflags input_fn dep_packages
1154 | WayPar `elem` (wayNames dflags) && not opt_Static =
1155 panic ("Don't know how to combine PVM wrapper and dynamic wrapper")
1156 | WayPar `elem` (wayNames dflags) = do
1157 let sysMan = pgm_sysman dflags
1158 pvm_root <- getEnv "PVM_ROOT"
1159 pvm_arch <- getEnv "PVM_ARCH"
1161 pvm_executable_base = "=" ++ input_fn
1162 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
1163 -- nuke old binary; maybe use configur'ed names for cp and rm?
1164 tryIO (removeFile pvm_executable)
1165 -- move the newly created binary into PVM land
1166 copy dflags "copying PVM executable" input_fn pvm_executable
1167 -- generate a wrapper script for running a parallel prg under PVM
1168 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
1171 case (dynLibLoader dflags) of
1174 let (o_base, o_ext) = splitExtension input_fn
1175 let wrapped_executable | o_ext == "exe" = (o_base ++ "_real") <.> o_ext
1176 | otherwise = input_fn ++ "_real"
1177 behaviour <- wrapper_behaviour dflags wrapmode dep_packages
1179 -- THINKME isn't this possible to do a bit nicer?
1180 let behaviour' = concatMap (\x -> if x=='\\' then "\\\\" else [x]) behaviour
1181 renameFile input_fn wrapped_executable
1182 let rtsDetails = (getPackageDetails (pkgState dflags) rtsPackageId);
1183 SysTools.runCc dflags
1184 ([ SysTools.FileOption "" ((head (libraryDirs rtsDetails)) ++ "/dyn-wrapper.c")
1185 , SysTools.Option ("-DBEHAVIOUR=\"" ++ behaviour' ++ "\"")
1186 , SysTools.Option "-o"
1187 , SysTools.FileOption "" input_fn
1188 ] ++ map (SysTools.FileOption "-I") (includeDirs rtsDetails))
1191 | otherwise = return True
1193 wrapper_behaviour :: DynFlags -> Maybe [Char] -> [PackageId] -> IO [Char]
1194 wrapper_behaviour dflags mode dep_packages =
1195 let seperateBySemiColon strs = tail $ concatMap (';':) strs
1198 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1199 return ('H' : (seperateBySemiColon pkg_lib_paths))
1201 allpkg <- getPreloadPackagesAnd dflags dep_packages
1202 putStrLn (unwords (map (packageIdString . packageConfigId) allpkg))
1203 return $ 'F':s ++ ';':(seperateBySemiColon (map (packageIdString . packageConfigId) allpkg))
1205 -- generates a Perl skript starting a parallel prg under PVM
1206 mk_pvm_wrapper_script :: String -> String -> String -> String
1207 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
1209 "eval 'exec perl -S $0 ${1+\"$@\"}'",
1210 " if $running_under_some_shell;",
1211 "# =!=!=!=!=!=!=!=!=!=!=!",
1212 "# This script is automatically generated: DO NOT EDIT!!!",
1213 "# Generated by Glasgow Haskell Compiler",
1214 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
1216 "$pvm_executable = '" ++ pvm_executable ++ "';",
1217 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
1218 "$SysMan = '" ++ sysMan ++ "';",
1220 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
1221 "# first, some magical shortcuts to run "commands" on the binary",
1222 "# (which is hidden)",
1223 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
1224 " local($cmd) = $1;",
1225 " system("$cmd $pvm_executable");",
1226 " exit(0); # all done",
1229 "# Now, run the real binary; process the args first",
1230 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
1232 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
1233 "@nonPVM_args = ();",
1234 "$in_RTS_args = 0;",
1236 "args: while ($a = shift(@ARGV)) {",
1237 " if ( $a eq '+RTS' ) {",
1238 " $in_RTS_args = 1;",
1239 " } elsif ( $a eq '-RTS' ) {",
1240 " $in_RTS_args = 0;",
1242 " if ( $a eq '-d' && $in_RTS_args ) {",
1244 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
1245 " $nprocessors = $1;",
1246 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
1247 " $nprocessors = $1;",
1249 " push(@nonPVM_args, $a);",
1253 "local($return_val) = 0;",
1254 "# Start the parallel execution by calling SysMan",
1255 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
1256 "$return_val = $?;",
1257 "# ToDo: fix race condition moving files and flushing them!!",
1258 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
1259 "exit($return_val);"
1262 -----------------------------------------------------------------------------
1263 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
1265 getHCFilePackages :: FilePath -> IO [PackageId]
1266 getHCFilePackages filename =
1267 Exception.bracket (openFile filename ReadMode) hClose $ \h -> do
1270 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
1271 return (map stringToPackageId (words rest))
1275 -----------------------------------------------------------------------------
1276 -- Static linking, of .o files
1278 -- The list of packages passed to link is the list of packages on
1279 -- which this program depends, as discovered by the compilation
1280 -- manager. It is combined with the list of packages that the user
1281 -- specifies on the command line with -package flags.
1283 -- In one-shot linking mode, we can't discover the package
1284 -- dependencies (because we haven't actually done any compilation or
1285 -- read any interface files), so the user must explicitly specify all
1288 linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
1289 linkBinary dflags o_files dep_packages = do
1290 let verb = getVerbFlag dflags
1291 output_fn = exeFileName dflags
1293 -- get the full list of packages to link with, by combining the
1294 -- explicit packages with the auto packages and all of their
1295 -- dependencies, and eliminating duplicates.
1297 pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
1298 let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
1299 #ifdef linux_TARGET_OS
1300 get_pkg_lib_path_opts l | (dynLibLoader dflags)==SystemDependent && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
1301 | otherwise = ["-L" ++ l]
1303 get_pkg_lib_path_opts l = ["-L" ++ l]
1306 let lib_paths = libraryPaths dflags
1307 let lib_path_opts = map ("-L"++) lib_paths
1309 pkg_link_opts <- getPackageLinkOpts dflags dep_packages
1311 #ifdef darwin_TARGET_OS
1312 pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
1313 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1315 let framework_paths = frameworkPaths dflags
1316 framework_path_opts = map ("-F"++) framework_paths
1318 pkg_frameworks <- getPackageFrameworks dflags dep_packages
1319 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1321 let frameworks = cmdlineFrameworks dflags
1322 framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1323 -- reverse because they're added in reverse order from the cmd line
1325 #ifdef mingw32_TARGET_OS
1326 let dynMain = if not opt_Static then
1327 (head (libraryDirs (getPackageDetails (pkgState dflags) rtsPackageId))) ++ "/Main.dyn_o"
1331 -- probably _stub.o files
1332 extra_ld_inputs <- readIORef v_Ld_inputs
1334 -- opts from -optl-<blah> (including -l<blah> options)
1335 let extra_ld_opts = getOpts dflags opt_l
1337 let ways = wayNames dflags
1339 -- Here are some libs that need to be linked at the *end* of
1340 -- the command line, because they contain symbols that are referred to
1341 -- by the RTS. We can't therefore use the ordinary way opts for these.
1343 debug_opts | WayDebug `elem` ways = [
1344 #if defined(HAVE_LIBBFD)
1351 thread_opts | WayThreaded `elem` ways = [
1352 #if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
1355 #if defined(osf3_TARGET_OS)
1361 rc_objs <- maybeCreateManifest dflags output_fn
1363 let (md_c_flags, _) = machdepCCOpts dflags
1364 SysTools.runLink dflags (
1365 [ SysTools.Option verb
1366 , SysTools.Option "-o"
1367 , SysTools.FileOption "" output_fn
1369 ++ map SysTools.Option (
1372 #ifdef mingw32_TARGET_OS
1379 #ifdef darwin_TARGET_OS
1380 ++ framework_path_opts
1383 ++ pkg_lib_path_opts
1385 #ifdef darwin_TARGET_OS
1386 ++ pkg_framework_path_opts
1387 ++ pkg_framework_opts
1393 -- parallel only: move binary to another dir -- HWL
1394 success <- runPhase_MoveBinary dflags output_fn dep_packages
1395 if success then return ()
1396 else ghcError (InstallationError ("cannot move binary"))
1399 exeFileName :: DynFlags -> FilePath
1401 | Just s <- outputFile dflags =
1402 #if defined(mingw32_HOST_OS)
1403 if null (takeExtension s)
1410 #if defined(mingw32_HOST_OS)
1418 -> FilePath -- filename of executable
1419 -> IO [FilePath] -- extra objects to embed, maybe
1420 #ifndef mingw32_TARGET_OS
1421 maybeCreateManifest _ _ = do
1424 maybeCreateManifest dflags exe_filename = do
1425 if not (dopt Opt_GenManifest dflags) then return [] else do
1427 let manifest_filename = exe_filename <.> "manifest"
1429 writeFile manifest_filename $
1430 "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"++
1431 " <assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestVersion=\"1.0\">\n"++
1432 " <assemblyIdentity version=\"1.0.0.0\"\n"++
1433 " processorArchitecture=\"X86\"\n"++
1434 " name=\"" ++ dropExtension exe_filename ++ "\"\n"++
1435 " type=\"win32\"/>\n\n"++
1436 " <trustInfo xmlns=\"urn:schemas-microsoft-com:asm.v3\">\n"++
1438 " <requestedPrivileges>\n"++
1439 " <requestedExecutionLevel level=\"asInvoker\" uiAccess=\"false\"/>\n"++
1440 " </requestedPrivileges>\n"++
1445 -- Windows will find the manifest file if it is named foo.exe.manifest.
1446 -- However, for extra robustness, and so that we can move the binary around,
1447 -- we can embed the manifest in the binary itself using windres:
1448 if not (dopt Opt_EmbedManifest dflags) then return [] else do
1450 rc_filename <- newTempName dflags "rc"
1451 rc_obj_filename <- newTempName dflags (objectSuf dflags)
1453 writeFile rc_filename $
1454 "1 24 MOVEABLE PURE " ++ show manifest_filename ++ "\n"
1455 -- magic numbers :-)
1456 -- show is a bit hackish above, but we need to escape the
1457 -- backslashes in the path.
1459 let wr_opts = getOpts dflags opt_windres
1460 runWindres dflags $ map SysTools.Option $
1461 ["--input="++rc_filename,
1462 "--output="++rc_obj_filename,
1463 "--output-format=coff"]
1465 -- no FileOptions here: windres doesn't like seeing
1466 -- backslashes, apparently
1468 return [rc_obj_filename]
1472 linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
1473 linkDynLib dflags o_files dep_packages = do
1474 let verb = getVerbFlag dflags
1475 let o_file = outputFile dflags
1477 -- We don't want to link our dynamic libs against the RTS package,
1478 -- because the RTS lib comes in several flavours and we want to be
1479 -- able to pick the flavour when a binary is linked.
1480 pkgs <- getPreloadPackagesAnd dflags dep_packages
1481 let pkgs_no_rts = filter ((/= rtsPackageId) . packageConfigId) pkgs
1483 let pkg_lib_paths = collectLibraryPaths pkgs_no_rts
1484 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1486 let lib_paths = libraryPaths dflags
1487 let lib_path_opts = map ("-L"++) lib_paths
1489 let pkg_link_opts = collectLinkOpts dflags pkgs_no_rts
1491 -- probably _stub.o files
1492 extra_ld_inputs <- readIORef v_Ld_inputs
1494 let (md_c_flags, _) = machdepCCOpts dflags
1495 let extra_ld_opts = getOpts dflags opt_l
1496 #if defined(mingw32_HOST_OS)
1497 -----------------------------------------------------------------------------
1499 -----------------------------------------------------------------------------
1500 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1502 SysTools.runLink dflags
1503 ([ SysTools.Option verb
1504 , SysTools.Option "-o"
1505 , SysTools.FileOption "" output_fn
1506 , SysTools.Option "-shared"
1507 , SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
1509 ++ map (SysTools.FileOption "") o_files
1510 ++ map SysTools.Option (
1515 ++ pkg_lib_path_opts
1518 #elif defined(darwin_TARGET_OS)
1519 -----------------------------------------------------------------------------
1520 -- Making a darwin dylib
1521 -----------------------------------------------------------------------------
1522 -- About the options used for Darwin:
1524 -- Apple's way of saying -shared
1525 -- -undefined dynamic_lookup:
1526 -- Without these options, we'd have to specify the correct dependencies
1527 -- for each of the dylibs. Note that we could (and should) do without this
1528 -- for all libraries except the RTS; all we need to do is to pass the
1529 -- correct HSfoo_dyn.dylib files to the link command.
1530 -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
1531 -- -flat_namespace -undefined suppress, which works on earlier versions,
1532 -- but it has other disadvantages.
1534 -- Build the dynamic library as a single "module", i.e. no dynamic binding
1535 -- nonsense when referring to symbols from within the library. The NCG
1536 -- assumes that this option is specified (on i386, at least).
1537 -- -Wl,-macosx_version_min -Wl,10.3
1538 -- Tell the linker its safe to assume that the library will run on 10.3 or
1539 -- later, so that it will not complain about the use of the option
1540 -- -undefined dynamic_lookup above.
1542 -- Causes the dynamic linker to ignore the DYLD_LIBRARY_PATH when loading
1543 -- this lib and instead look for it at its absolute path.
1544 -- When installing the .dylibs (see target.mk), we'll change that path to
1545 -- point to the place they are installed. Therefore, we won't have to set
1546 -- up DYLD_LIBRARY_PATH specifically for ghc.
1547 -----------------------------------------------------------------------------
1549 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1551 pwd <- getCurrentDirectory
1552 SysTools.runLink dflags
1553 ([ SysTools.Option verb
1554 , SysTools.Option "-dynamiclib"
1555 , SysTools.Option "-o"
1556 , SysTools.FileOption "" output_fn
1558 ++ map SysTools.Option (
1561 ++ [ "-undefined", "dynamic_lookup", "-single_module", "-Wl,-macosx_version_min","-Wl,10.3", "-install_name " ++ (pwd </> output_fn) ]
1565 ++ pkg_lib_path_opts
1569 -----------------------------------------------------------------------------
1571 -----------------------------------------------------------------------------
1573 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
1575 SysTools.runLink dflags
1576 ([ SysTools.Option verb
1577 , SysTools.Option "-o"
1578 , SysTools.FileOption "" output_fn
1580 ++ map SysTools.Option (
1583 ++ [ "-shared", "-Wl,-Bsymbolic" ] -- we need symbolic linking to resolve non-PIC intra-package-relocations
1587 ++ pkg_lib_path_opts
1591 -- -----------------------------------------------------------------------------
1594 doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
1595 doCpp dflags raw include_cc_opts input_fn output_fn = do
1596 let hscpp_opts = getOpts dflags opt_P
1597 let cmdline_include_paths = includePaths dflags
1599 pkg_include_dirs <- getPackageIncludePath dflags []
1600 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
1601 (cmdline_include_paths ++ pkg_include_dirs)
1603 let verb = getVerbFlag dflags
1606 | not include_cc_opts = []
1607 | otherwise = (optc ++ md_c_flags)
1609 optc = getOpts dflags opt_c
1610 (md_c_flags, _) = machdepCCOpts dflags
1612 let cpp_prog args | raw = SysTools.runCpp dflags args
1613 | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
1616 [ "-D" ++ HOST_OS ++ "_BUILD_OS=1",
1617 "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1",
1618 "-D" ++ TARGET_OS ++ "_HOST_OS=1",
1619 "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ]
1620 -- remember, in code we *compile*, the HOST is the same our TARGET,
1621 -- and BUILD is the same as our HOST.
1623 cpp_prog ([SysTools.Option verb]
1624 ++ map SysTools.Option include_paths
1625 ++ map SysTools.Option hsSourceCppOpts
1626 ++ map SysTools.Option hscpp_opts
1627 ++ map SysTools.Option cc_opts
1628 ++ map SysTools.Option target_defs
1629 ++ [ SysTools.Option "-x"
1630 , SysTools.Option "c"
1631 , SysTools.Option input_fn
1632 -- We hackily use Option instead of FileOption here, so that the file
1633 -- name is not back-slashed on Windows. cpp is capable of
1634 -- dealing with / in filenames, so it works fine. Furthermore
1635 -- if we put in backslashes, cpp outputs #line directives
1636 -- with *double* backslashes. And that in turn means that
1637 -- our error messages get double backslashes in them.
1638 -- In due course we should arrange that the lexer deals
1639 -- with these \\ escapes properly.
1640 , SysTools.Option "-o"
1641 , SysTools.FileOption "" output_fn
1644 cHaskell1Version :: String
1645 cHaskell1Version = "5" -- i.e., Haskell 98
1647 hsSourceCppOpts :: [String]
1648 -- Default CPP defines in Haskell source
1650 [ "-D__HASKELL1__="++cHaskell1Version
1651 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
1653 , "-D__CONCURRENT_HASKELL__"
1657 -- -----------------------------------------------------------------------------
1660 hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
1661 hscNextPhase _ HsBootFile _ = StopLn
1662 hscNextPhase dflags _ hsc_lang =
1665 HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
1667 HscNothing -> StopLn
1668 HscInterpreted -> StopLn
1672 hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget
1673 hscMaybeAdjustTarget dflags stop _ current_hsc_lang
1676 keep_hc = dopt Opt_KeepHcFiles dflags
1678 -- don't change the lang if we're interpreting
1679 | current_hsc_lang == HscInterpreted = current_hsc_lang
1681 -- force -fvia-C if we are being asked for a .hc file
1682 | HCc <- stop = HscC
1684 -- otherwise, stick to the plan
1685 | otherwise = current_hsc_lang
1687 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
1688 -- The split prefix and number of files