1 -----------------------------------------------------------------------------
5 -- (c) The University of Glasgow 2002
7 -----------------------------------------------------------------------------
9 #include "../includes/config.h"
11 module DriverPipeline (
13 -- Interfaces for the batch-mode driver
14 runPipeline, staticLink,
16 -- Interfaces for the compilation manager (interpreted/batch-mode)
18 compile, CompResult(..),
25 #include "HsVersions.h"
34 import SysTools ( newTempName, addFilesToClean, getSysMan, copy )
35 import qualified SysTools
46 import BasicTypes ( SuccessFlag(..) )
47 import Maybes ( expectJust )
49 import ParserCoreUtils ( getCoreModuleName )
52 import DATA_IOREF ( readIORef, writeIORef )
55 import Time ( getClockTime )
64 -- ---------------------------------------------------------------------------
67 -- Just preprocess a file, put the result in a temp. file (used by the
68 -- compilation manager during the summary phase).
70 preprocess :: FilePath -> IO FilePath
72 ASSERT(haskellish_src_file filename)
73 do restoreDynFlags -- Restore to state of last save
74 runPipeline (StopBefore Hsc) ("preprocess")
75 False{-temporary output file-}
76 Nothing{-no specific output file-}
78 Nothing{-no ModLocation-}
80 -- ---------------------------------------------------------------------------
83 -- Compile a single module, under the control of the compilation manager.
85 -- This is the interface between the compilation manager and the
86 -- compiler proper (hsc), where we deal with tedious details like
87 -- reading the OPTIONS pragma from the source file, and passing the
88 -- output of hsc through the C compiler.
90 -- The driver sits between 'compile' and 'hscMain', translating calls
91 -- to the former into calls to the latter, and results from the latter
92 -- into results from the former. It does things like preprocessing
93 -- the .hs file if necessary, and compiling up the .stub_c files to
94 -- generate Linkables.
96 -- NB. No old interface can also mean that the source has changed.
98 compile :: GhciMode -- distinguish batch from interactive
101 -> Bool -- True <=> source unchanged
102 -> Bool -- True <=> have object
103 -> Maybe ModIface -- old interface, if available
104 -> HomePackageTable -- For home-module stuff
105 -> PersistentCompilerState -- persistent compiler state
109 = CompOK PersistentCompilerState -- Updated PCS
110 ModDetails -- New details
111 ModIface -- New iface
112 (Maybe Linkable) -- New code; Nothing => compilation was not reqd
113 -- (old code is still valid)
115 | CompErrs PersistentCompilerState -- Updated PCS
118 compile ghci_mode this_mod location
119 source_unchanged have_object
120 old_iface hpt pcs = do
122 dyn_flags <- restoreDynFlags -- Restore to the state of the last save
125 (showSDoc (text "Compiling" <+> ppr this_mod))
127 let verb = verbosity dyn_flags
128 let input_fn = expectJust "compile:hs" (ml_hs_file location)
129 let input_fnpp = expectJust "compile:hspp" (ml_hspp_file location)
130 let mod_name = moduleName this_mod
132 when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
134 opts <- getOptionsFromSource input_fnpp
135 processArgs dynamic_flags opts []
136 dyn_flags <- getDynFlags
138 let (basename, _) = splitFilename input_fn
140 -- figure out what lang we're generating
141 hsc_lang <- hscMaybeAdjustLang (hscLang dyn_flags)
142 -- figure out what the next phase should be
143 next_phase <- hscNextPhase hsc_lang
144 -- figure out what file to generate the output into
145 get_output_fn <- genOutputFilenameFunc False Nothing next_phase basename
146 output_fn <- get_output_fn next_phase (Just location)
148 let dyn_flags' = dyn_flags { hscLang = hsc_lang,
149 hscOutName = output_fn,
150 hscStubCOutName = basename ++ "_stub.c",
151 hscStubHOutName = basename ++ "_stub.h",
152 extCoreName = basename ++ ".hcr" }
154 -- -no-recomp should also work with --make
155 do_recomp <- readIORef v_Recomp
156 let source_unchanged' = source_unchanged && do_recomp
157 hsc_env = HscEnv { hsc_mode = ghci_mode,
158 hsc_dflags = dyn_flags',
162 hsc_result <- hscMain hsc_env pcs this_mod location
163 source_unchanged' have_object old_iface
166 HscFail pcs -> return (CompErrs pcs)
168 HscNoRecomp pcs details iface -> return (CompOK pcs details iface Nothing)
170 HscRecomp pcs details iface
171 stub_h_exists stub_c_exists maybe_interpreted_code -> do
173 maybe_stub_o <- compileStub dyn_flags' stub_c_exists
174 let stub_unlinked = case maybe_stub_o of
176 Just stub_o -> [ DotO stub_o ]
178 (hs_unlinked, unlinked_time) <-
181 -- in interpreted mode, just return the compiled code
182 -- as our "unlinked" object.
184 case maybe_interpreted_code of
186 Just comp_bc -> do tm <- getClockTime
187 return ([BCOs comp_bc], tm)
189 Nothing -> panic "compile: no interpreted code"
191 -- we're in batch mode: finish the compilation pipeline.
193 let object_filename = ml_obj_file location
195 runPipeline (StopBefore Ln) ""
196 True Nothing output_fn (Just location)
197 -- the object filename comes from the ModLocation
199 o_time <- getModificationTime object_filename
200 return ([DotO object_filename], o_time)
202 let linkable = LM unlinked_time mod_name
203 (hs_unlinked ++ stub_unlinked)
205 return (CompOK pcs details iface (Just linkable))
207 -----------------------------------------------------------------------------
208 -- stub .h and .c files (for foreign export support)
210 compileStub dflags stub_c_exists
211 | not stub_c_exists = return Nothing
213 -- compile the _stub.c file w/ gcc
214 let stub_c = hscStubCOutName dflags
215 stub_o <- runPipeline (StopBefore Ln) "stub-compile"
216 True{-persistent output-}
217 Nothing{-no specific output file-}
219 Nothing{-no ModLocation-}
223 -- ---------------------------------------------------------------------------
226 link :: GhciMode -- interactive or batch
227 -> DynFlags -- dynamic flags
228 -> Bool -- attempt linking in batch mode?
229 -> HomePackageTable -- what to link
232 -- For the moment, in the batch linker, we don't bother to tell doLink
233 -- which packages to link -- it just tries all that are available.
234 -- batch_attempt_linking should only be *looked at* in batch mode. It
235 -- should only be True if the upsweep was successful and someone
236 -- exports main, i.e., we have good reason to believe that linking
240 link Interactive dflags batch_attempt_linking hpt
241 = do -- Not Linking...(demand linker will do the job)
245 link Batch dflags batch_attempt_linking hpt
246 | batch_attempt_linking
249 home_mod_infos = moduleEnvElts hpt
251 -- the packages we depend on
252 pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
254 -- the linkables to link
255 linkables = map hm_linkable home_mod_infos
257 when (verb >= 3) $ do
258 hPutStrLn stderr "link: linkables are ..."
259 hPutStrLn stderr (showSDoc (vcat (map ppr linkables)))
261 -- check for the -no-link flag
262 omit_linking <- readIORef v_NoLink
264 then do when (verb >= 3) $
265 hPutStrLn stderr "link(batch): linking omitted (-no-link flag given)."
270 hPutStrLn stderr "Linking ..."
272 let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
273 obj_files = concatMap getOfiles linkables
275 -- Don't showPass in Batch mode; doLink will do that for us.
276 staticLink obj_files pkg_deps
278 when (verb >= 3) (hPutStrLn stderr "link: done")
280 -- staticLink only returns if it succeeds
284 = do when (verb >= 3) $ do
285 hPutStrLn stderr "link(batch): upsweep (partially) failed OR"
286 hPutStrLn stderr " Main.main not exported; not linking."
289 verb = verbosity dflags
291 -- ---------------------------------------------------------------------------
292 -- Run a compilation pipeline, consisting of multiple phases.
295 :: GhcMode -- when to stop
296 -> String -- "stop after" flag
297 -> Bool -- final output is persistent?
298 -> Maybe FilePath -- where to put the output, optionally
299 -> FilePath -- input filename
300 -> Maybe ModLocation -- a ModLocation for this module, if we have one
301 -> IO FilePath -- output filename
303 runPipeline todo stop_flag keep_output maybe_output_filename input_fn maybe_loc
305 split <- readIORef v_Split_object_files
306 let (basename, suffix) = splitFilename input_fn
307 start_phase = startPhase suffix
309 stop_phase = case todo of
310 StopBefore As | split -> SplitAs
311 StopBefore phase -> phase
316 -- We want to catch cases of "you can't get there from here" before
317 -- we start the pipeline, because otherwise it will just run off the
320 -- There is a partial ordering on phases, where A < B iff A occurs
321 -- before B in a normal compilation pipeline.
323 when (not (start_phase `happensBefore` stop_phase)) $
325 ("flag `" ++ stop_flag
326 ++ "' is incompatible with source file `"
329 -- generate a function which will be used to calculate output file names
331 get_output_fn <- genOutputFilenameFunc keep_output maybe_output_filename
334 -- and execute the pipeline...
335 (output_fn, maybe_loc) <-
336 pipeLoop start_phase stop_phase input_fn basename suffix
337 get_output_fn maybe_loc
339 -- sometimes, a compilation phase doesn't actually generate any output
340 -- (eg. the CPP phase when -fcpp is not turned on). If we end on this
341 -- stage, but we wanted to keep the output, then we have to explicitly
344 then do final_fn <- get_output_fn stop_phase maybe_loc
345 when (final_fn /= output_fn) $
346 copy ("Copying `" ++ output_fn ++ "' to `" ++ final_fn
347 ++ "'") output_fn final_fn
353 pipeLoop :: Phase -> Phase -> FilePath -> String -> Suffix
354 -> (Phase -> Maybe ModLocation -> IO FilePath)
355 -> Maybe ModLocation -> IO (FilePath, Maybe ModLocation)
357 pipeLoop phase stop_phase input_fn orig_basename orig_suff
358 get_output_fn maybe_loc
360 | phase == stop_phase = return (input_fn, maybe_loc) -- all done
362 | not (phase `happensBefore` stop_phase) =
363 -- Something has gone wrong. We'll try to cover all the cases when
364 -- this could happen, so if we reach here it is a panic.
365 -- eg. it might happen if the -C flag is used on a source file that
366 -- has {-# OPTIONS -fasm #-}.
367 panic ("pipeLoop: at phase " ++ show phase ++
368 " but I wanted to stop at phase " ++ show stop_phase)
371 maybe_next_phase <- runPhase phase orig_basename orig_suff input_fn
372 get_output_fn maybe_loc
373 case maybe_next_phase of
374 (Nothing, maybe_loc, output_fn) -> do
375 -- we stopped early, but return the *final* filename
376 -- (it presumably already exists)
377 final_fn <- get_output_fn stop_phase maybe_loc
378 return (final_fn, maybe_loc)
379 (Just next_phase, maybe_loc, output_fn) ->
380 pipeLoop next_phase stop_phase output_fn
381 orig_basename orig_suff get_output_fn maybe_loc
384 genOutputFilenameFunc :: Bool -> Maybe FilePath -> Phase -> String
385 -> IO (Phase{-next phase-} -> Maybe ModLocation -> IO FilePath)
386 genOutputFilenameFunc keep_output maybe_output_filename stop_phase basename
388 hcsuf <- readIORef v_HC_suf
389 odir <- readIORef v_Output_dir
390 osuf <- readIORef v_Object_suf
391 keep_hc <- readIORef v_Keep_hc_files
393 keep_il <- readIORef v_Keep_il_files
394 keep_ilx <- readIORef v_Keep_ilx_files
396 keep_raw_s <- readIORef v_Keep_raw_s_files
397 keep_s <- readIORef v_Keep_s_files
399 myPhaseInputExt HCc | Just s <- hcsuf = s
400 myPhaseInputExt Ln = osuf
401 myPhaseInputExt other = phaseInputExt other
403 func next_phase maybe_location
404 | next_phase == stop_phase
405 = case maybe_output_filename of
406 Just file -> return file
408 | Ln <- next_phase -> return odir_persistent
409 | keep_output -> return persistent
410 | otherwise -> newTempName suffix
411 -- sometimes, we keep output from intermediate stages
414 Ln -> return odir_persistent
415 Mangle | keep_raw_s -> return persistent
416 As | keep_s -> return persistent
417 HCc | keep_hc -> return persistent
418 _other -> newTempName suffix
420 suffix = myPhaseInputExt next_phase
421 persistent = basename ++ '.':suffix
424 | Just loc <- maybe_location = ml_obj_file loc
425 | Just d <- odir = replaceFilenameDirectory persistent d
426 | otherwise = persistent
431 -- -----------------------------------------------------------------------------
432 -- Each phase in the pipeline returns the next phase to execute, and the
433 -- name of the file in which the output was placed.
435 -- We must do things dynamically this way, because we often don't know
436 -- what the rest of the phases will be until part-way through the
437 -- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
438 -- of a source file can change the latter stages of the pipeline from
439 -- taking the via-C route to using the native code generator.
442 -> String -- basename of original input source
443 -> String -- its extension
444 -> FilePath -- name of file which contains the input to this phase.
445 -> (Phase -> Maybe ModLocation -> IO FilePath)
446 -- how to calculate the output filename
447 -> Maybe ModLocation -- the ModLocation, if we have one
448 -> IO (Maybe Phase, -- next phase
449 Maybe ModLocation, -- the ModLocation, if we have one
450 FilePath) -- output filename
452 -------------------------------------------------------------------------------
455 runPhase Unlit _basename _suff input_fn get_output_fn maybe_loc
456 = do unlit_flags <- getOpts opt_L
457 -- The -h option passes the file name for unlit to put in a #line directive
458 output_fn <- get_output_fn Cpp maybe_loc
460 SysTools.runUnlit (map SysTools.Option unlit_flags ++
461 [ SysTools.Option "-h"
462 , SysTools.Option input_fn
463 , SysTools.FileOption "" input_fn
464 , SysTools.FileOption "" output_fn
467 return (Just Cpp, maybe_loc, output_fn)
469 -------------------------------------------------------------------------------
472 runPhase Cpp basename suff input_fn get_output_fn maybe_loc
473 = do src_opts <- getOptionsFromSource input_fn
474 unhandled_flags <- processArgs dynamic_flags src_opts []
475 checkProcessArgsResult unhandled_flags basename suff
477 do_cpp <- dynFlag cppFlag
479 -- no need to preprocess CPP, just pass input file along
480 -- to the next phase of the pipeline.
481 return (Just HsPp, maybe_loc, input_fn)
483 hscpp_opts <- getOpts opt_P
484 hs_src_cpp_opts <- readIORef v_Hs_source_cpp_opts
486 cmdline_include_paths <- readIORef v_Include_paths
488 pkg_include_dirs <- getPackageIncludePath []
489 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
490 (cmdline_include_paths ++ pkg_include_dirs)
493 (md_c_flags, _) <- machdepCCOpts
495 output_fn <- get_output_fn HsPp maybe_loc
497 SysTools.runCpp ([SysTools.Option verb]
498 ++ map SysTools.Option include_paths
499 ++ map SysTools.Option hs_src_cpp_opts
500 ++ map SysTools.Option hscpp_opts
501 ++ map SysTools.Option md_c_flags
502 ++ [ SysTools.Option "-x"
503 , SysTools.Option "c"
504 , SysTools.Option input_fn
505 -- We hackily use Option instead of FileOption here, so that the file
506 -- name is not back-slashed on Windows. cpp is capable of
507 -- dealing with / in filenames, so it works fine. Furthermore
508 -- if we put in backslashes, cpp outputs #line directives
509 -- with *double* backslashes. And that in turn means that
510 -- our error messages get double backslashes in them.
511 -- In due course we should arrange that the lexer deals
512 -- with these \\ escapes properly.
513 , SysTools.Option "-o"
514 , SysTools.FileOption "" output_fn
517 return (Just HsPp, maybe_loc, output_fn)
519 -------------------------------------------------------------------------------
522 runPhase HsPp basename suff input_fn get_output_fn maybe_loc
523 = do do_pp <- dynFlag ppFlag
525 -- no need to preprocess, just pass input file along
526 -- to the next phase of the pipeline.
527 return (Just Hsc, maybe_loc, input_fn)
529 hspp_opts <- getOpts opt_F
530 hs_src_pp_opts <- readIORef v_Hs_source_pp_opts
531 let orig_fn = basename ++ '.':suff
532 output_fn <- get_output_fn Hsc maybe_loc
533 SysTools.runPp ( [ SysTools.Option orig_fn
534 , SysTools.Option input_fn
535 , SysTools.FileOption "" output_fn
537 map SysTools.Option hs_src_pp_opts ++
538 map SysTools.Option hspp_opts
540 return (Just Hsc, maybe_loc, output_fn)
542 -----------------------------------------------------------------------------
545 -- Compilation of a single module, in "legacy" mode (_not_ under
546 -- the direction of the compilation manager).
547 runPhase Hsc basename suff input_fn get_output_fn _maybe_loc = do
548 todo <- readIORef v_GhcMode
549 if todo == DoMkDependHS then do
550 locn <- doMkDependHSPhase basename suff input_fn
551 return (Nothing, Just locn, input_fn) -- Ln is a dummy stop phase
554 -- normal Hsc mode, not mkdependHS
556 -- we add the current directory (i.e. the directory in which
557 -- the .hs files resides) to the import path, since this is
558 -- what gcc does, and it's probably what you want.
559 let current_dir = directoryOf basename
561 paths <- readIORef v_Include_paths
562 writeIORef v_Include_paths (current_dir : paths)
564 -- gather the imports and module name
566 if extcoreish_suffix suff
568 -- no explicit imports in ExtCore input.
569 m <- getCoreModuleName input_fn
570 return ([], [], mkModuleName m)
572 getImportsFromFile input_fn
574 -- build a ModLocation to pass to hscMain.
575 (mod, location') <- mkHomeModLocation mod_name (basename ++ '.':suff)
577 -- take -ohi into account if present
578 ohi <- readIORef v_Output_hi
579 let location | Just fn <- ohi = location'{ ml_hi_file = fn }
580 | otherwise = location'
582 -- figure out if the source has changed, for recompilation avoidance.
583 -- only do this if we're eventually going to generate a .o file.
584 -- (ToDo: do when generating .hc files too?)
586 -- Setting source_unchanged to True means that M.o seems
587 -- to be up to date wrt M.hs; so no need to recompile unless imports have
588 -- changed (which the compiler itself figures out).
589 -- Setting source_unchanged to False tells the compiler that M.o is out of
590 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
591 do_recomp <- readIORef v_Recomp
592 expl_o_file <- readIORef v_Output_file
594 let o_file -- if the -o option is given and IT IS THE OBJECT FILE FOR
595 -- THIS COMPILATION, then use that to determine if the
596 -- source is unchanged.
597 | Just x <- expl_o_file, todo == StopBefore Ln = x
598 | otherwise = ml_obj_file location
601 if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln ))
603 else do t1 <- getModificationTime (basename ++ '.':suff)
604 o_file_exists <- doesFileExist o_file
606 then return False -- Need to recompile
607 else do t2 <- getModificationTime o_file
613 dyn_flags <- getDynFlags
614 hsc_lang <- hscMaybeAdjustLang (hscLang dyn_flags)
615 next_phase <- hscNextPhase hsc_lang
616 output_fn <- get_output_fn next_phase (Just location)
618 let dyn_flags' = dyn_flags { hscLang = hsc_lang,
619 hscOutName = output_fn,
620 hscStubCOutName = basename ++ "_stub.c",
621 hscStubHOutName = basename ++ "_stub.h",
622 extCoreName = basename ++ ".hcr" }
623 hsc_env = HscEnv { hsc_mode = OneShot,
624 hsc_dflags = dyn_flags',
625 hsc_HPT = emptyHomePackageTable }
629 pcs <- initPersistentCompilerState
630 result <- hscMain hsc_env pcs mod
631 location{ ml_hspp_file=Just input_fn }
638 HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1))
640 HscNoRecomp pcs details iface -> do
641 SysTools.touch "Touching object file" o_file
642 return (Nothing, Just location, output_fn)
644 HscRecomp _pcs _details _iface stub_h_exists stub_c_exists
645 _maybe_interpreted_code -> do
648 maybe_stub_o <- compileStub dyn_flags' stub_c_exists
651 Just stub_o -> add v_Ld_inputs stub_o
652 case hscLang dyn_flags of
653 HscNothing -> return (Nothing, Just location, output_fn)
654 _ -> return (Just next_phase, Just location, output_fn)
656 -----------------------------------------------------------------------------
659 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
660 -- way too many hacks, and I can't say I've ever used it anyway.
662 runPhase cc_phase basename suff input_fn get_output_fn maybe_loc
663 | cc_phase == Cc || cc_phase == HCc
664 = do cc_opts <- getOpts opt_c
665 cmdline_include_paths <- readIORef v_Include_paths
667 split <- readIORef v_Split_object_files
668 mangle <- readIORef v_Do_asm_mangling
670 let hcc = cc_phase == HCc
673 | hcc && mangle = Mangle
676 output_fn <- get_output_fn next_phase maybe_loc
678 -- HC files have the dependent packages stamped into them
679 pkgs <- if hcc then getHCFilePackages input_fn else return []
681 -- add package include paths even if we're just compiling .c
682 -- files; this is the Value Add(TM) that using ghc instead of
684 pkg_include_dirs <- getPackageIncludePath pkgs
685 let include_paths = foldr (\ x xs -> "-I" : x : xs) []
686 (cmdline_include_paths ++ pkg_include_dirs)
688 mangle <- readIORef v_Do_asm_mangling
689 (md_c_flags, md_regd_c_flags) <- machdepCCOpts
693 pkg_extra_cc_opts <- getPackageExtraCcOpts pkgs
695 split_objs <- readIORef v_Split_object_files
696 let split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
699 excessPrecision <- readIORef v_Excess_precision
701 -- force the C compiler to interpret this file as C when
702 -- compiling .hc files, by adding the -x c option.
704 | cc_phase == HCc = [ SysTools.Option "-x", SysTools.Option "c"]
707 SysTools.runCc (langopt ++
708 [ SysTools.FileOption "" input_fn
709 , SysTools.Option "-o"
710 , SysTools.FileOption "" output_fn
712 ++ map SysTools.Option (
714 ++ (if cc_phase == HCc && mangle
717 ++ [ verb, "-S", "-Wimplicit", "-O" ]
718 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
721 ++ (if excessPrecision then [] else [ "-ffloat-store" ])
726 return (Just next_phase, maybe_loc, output_fn)
728 -- ToDo: postprocess the output from gcc
730 -----------------------------------------------------------------------------
733 runPhase Mangle _basename _suff input_fn get_output_fn maybe_loc
734 = do mangler_opts <- getOpts opt_m
735 machdep_opts <- if (prefixMatch "i386" cTARGETPLATFORM)
736 then do n_regs <- dynFlag stolen_x86_regs
737 return [ show n_regs ]
740 split <- readIORef v_Split_object_files
742 | split = SplitMangle
744 output_fn <- get_output_fn next_phase maybe_loc
746 SysTools.runMangle (map SysTools.Option mangler_opts
747 ++ [ SysTools.FileOption "" input_fn
748 , SysTools.FileOption "" output_fn
750 ++ map SysTools.Option machdep_opts)
752 return (Just next_phase, maybe_loc, output_fn)
754 -----------------------------------------------------------------------------
757 runPhase SplitMangle _basename _suff input_fn get_output_fn maybe_loc
758 = do -- tmp_pfx is the prefix used for the split .s files
759 -- We also use it as the file to contain the no. of split .s files (sigh)
760 split_s_prefix <- SysTools.newTempName "split"
761 let n_files_fn = split_s_prefix
763 SysTools.runSplit [ SysTools.FileOption "" input_fn
764 , SysTools.FileOption "" split_s_prefix
765 , SysTools.FileOption "" n_files_fn
768 -- Save the number of split files for future references
769 s <- readFile n_files_fn
770 let n_files = read s :: Int
771 writeIORef v_Split_info (split_s_prefix, n_files)
773 -- Remember to delete all these files
774 addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
777 return (Just SplitAs, maybe_loc, "**splitmangle**")
778 -- we don't use the filename
780 -----------------------------------------------------------------------------
783 runPhase As _basename _suff input_fn get_output_fn maybe_loc
784 = do as_opts <- getOpts opt_a
785 cmdline_include_paths <- readIORef v_Include_paths
787 output_fn <- get_output_fn Ln maybe_loc
789 -- we create directories for the object file, because it
790 -- might be a hierarchical module.
791 createDirectoryHierarchy (directoryOf output_fn)
793 SysTools.runAs (map SysTools.Option as_opts
794 ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
795 ++ [ SysTools.Option "-c"
796 , SysTools.FileOption "" input_fn
797 , SysTools.Option "-o"
798 , SysTools.FileOption "" output_fn
801 return (Just Ln, maybe_loc, output_fn)
804 runPhase SplitAs basename _suff _input_fn get_output_fn maybe_loc
805 = do as_opts <- getOpts opt_a
807 (split_s_prefix, n) <- readIORef v_Split_info
809 odir <- readIORef v_Output_dir
810 let real_odir = case odir of
811 Nothing -> basename ++ "_split"
815 = do let input_s = split_s_prefix ++ "__" ++ show n ++ ".s"
816 let output_o = replaceFilenameDirectory
817 (basename ++ "__" ++ show n ++ ".o")
819 real_o <- osuf_ify output_o
820 SysTools.runAs (map SysTools.Option as_opts ++
821 [ SysTools.Option "-c"
822 , SysTools.Option "-o"
823 , SysTools.FileOption "" real_o
824 , SysTools.FileOption "" input_s
827 mapM_ assemble_file [1..n]
829 output_fn <- get_output_fn Ln maybe_loc
830 return (Just Ln, maybe_loc, output_fn)
833 -----------------------------------------------------------------------------
835 -- Run ilx2il over the ILX output, getting an IL file
837 runPhase Ilx2Il _basename _suff input_fn get_output_fn maybe_loc
838 = do ilx2il_opts <- getOpts opt_I
839 SysTools.runIlx2il (map SysTools.Option ilx2il_opts
840 ++ [ SysTools.Option "--no-add-suffix-to-assembly",
841 SysTools.Option "mscorlib",
842 SysTools.Option "-o",
843 SysTools.FileOption "" output_fn,
844 SysTools.FileOption "" input_fn ])
847 -----------------------------------------------------------------------------
849 -- Run ilasm over the IL, getting a DLL
851 runPhase Ilasm _basename _suff input_fn get_output_fn maybe_loc
852 = do ilasm_opts <- getOpts opt_i
853 SysTools.runIlasm (map SysTools.Option ilasm_opts
854 ++ [ SysTools.Option "/QUIET",
855 SysTools.Option "/DLL",
856 SysTools.FileOption "/OUT=" output_fn,
857 SysTools.FileOption "" input_fn ])
862 -----------------------------------------------------------------------------
863 -- MoveBinary sort-of-phase
864 -- After having produced a binary, move it somewhere else and generate a
865 -- wrapper script calling the binary. Currently, we need this only in
866 -- a parallel way (i.e. in GUM), because PVM expects the binary in a
867 -- central directory.
868 -- This is called from staticLink below, after linking. I haven't made it
869 -- a separate phase to minimise interfering with other modules, and
870 -- we don't need the generality of a phase (MoveBinary is always
871 -- done after linking and makes only sense in a parallel setup) -- HWL
873 runPhase_MoveBinary input_fn
876 pvm_root <- getEnv "PVM_ROOT"
877 pvm_arch <- getEnv "PVM_ARCH"
879 pvm_executable_base = "=" ++ input_fn
880 pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
881 -- nuke old binary; maybe use configur'ed names for cp and rm?
882 system ("rm -f " ++ pvm_executable)
883 -- move the newly created binary into PVM land
884 system ("cp -p " ++ input_fn ++ " " ++ pvm_executable)
885 -- generate a wrapper script for running a parallel prg under PVM
886 writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
889 -- generates a Perl skript starting a parallel prg under PVM
890 mk_pvm_wrapper_script :: String -> String -> String -> String
891 mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
893 "eval 'exec perl -S $0 ${1+\"$@\"}'",
894 " if $running_under_some_shell;",
895 "# =!=!=!=!=!=!=!=!=!=!=!",
896 "# This script is automatically generated: DO NOT EDIT!!!",
897 "# Generated by Glasgow Haskell Compiler",
898 "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!",
900 "$pvm_executable = '" ++ pvm_executable ++ "';",
901 "$pvm_executable_base = '" ++ pvm_executable_base ++ "';",
902 "$SysMan = '" ++ sysMan ++ "';",
904 {- ToDo: add the magical shortcuts again iff we actually use them -- HWL
905 "# first, some magical shortcuts to run "commands" on the binary",
906 "# (which is hidden)",
907 "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {",
908 " local($cmd) = $1;",
909 " system("$cmd $pvm_executable");",
910 " exit(0); # all done",
913 "# Now, run the real binary; process the args first",
914 "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base,
916 "$nprocessors = 0; # the default: as many PEs as machines in PVM config",
917 "@nonPVM_args = ();",
920 "args: while ($a = shift(@ARGV)) {",
921 " if ( $a eq '+RTS' ) {",
922 " $in_RTS_args = 1;",
923 " } elsif ( $a eq '-RTS' ) {",
924 " $in_RTS_args = 0;",
926 " if ( $a eq '-d' && $in_RTS_args ) {",
928 " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
929 " $nprocessors = $1;",
930 " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
931 " $nprocessors = $1;",
933 " push(@nonPVM_args, $a);",
937 "local($return_val) = 0;",
938 "# Start the parallel execution by calling SysMan",
939 "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");",
941 "# ToDo: fix race condition moving files and flushing them!!",
942 "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";",
946 -----------------------------------------------------------------------------
947 -- Complain about non-dynamic flags in OPTIONS pragmas
949 checkProcessArgsResult flags basename suff
950 = do when (notNull flags) (throwDyn (ProgramError (
951 showSDoc (hang (text basename <> text ('.':suff) <> char ':')
952 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
953 hsep (map text flags)))
956 -----------------------------------------------------------------------------
957 -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
959 getHCFilePackages :: FilePath -> IO [PackageName]
960 getHCFilePackages filename =
961 EXCEPTION.bracket (openFile filename ReadMode) hClose $ \h -> do
964 '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
965 return (map mkPackageName (words rest))
969 -----------------------------------------------------------------------------
970 -- Static linking, of .o files
972 -- The list of packages passed to link is the list of packages on
973 -- which this program depends, as discovered by the compilation
974 -- manager. It is combined with the list of packages that the user
975 -- specifies on the command line with -package flags.
977 -- In one-shot linking mode, we can't discover the package
978 -- dependencies (because we haven't actually done any compilation or
979 -- read any interface files), so the user must explicitly specify all
982 staticLink :: [FilePath] -> [PackageName] -> IO ()
983 staticLink o_files dep_packages = do
985 static <- readIORef v_Static
986 no_hs_main <- readIORef v_NoHsMain
988 -- get the full list of packages to link with, by combining the
989 -- explicit packages with the auto packages and all of their
990 -- dependencies, and eliminating duplicates.
992 o_file <- readIORef v_Output_file
993 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
995 pkg_lib_paths <- getPackageLibraryPath dep_packages
996 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
998 lib_paths <- readIORef v_Library_paths
999 let lib_path_opts = map ("-L"++) lib_paths
1001 pkg_link_opts <- getPackageLinkOpts dep_packages
1003 #ifdef darwin_TARGET_OS
1004 pkg_framework_paths <- getPackageFrameworkPath dep_packages
1005 let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
1007 framework_paths <- readIORef v_Framework_paths
1008 let framework_path_opts = map ("-F"++) framework_paths
1010 pkg_frameworks <- getPackageFrameworks dep_packages
1011 let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
1013 frameworks <- readIORef v_Cmdline_frameworks
1014 let framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
1015 -- reverse because they're added in reverse order from the cmd line
1018 -- probably _stub.o files
1019 extra_ld_inputs <- readIORef v_Ld_inputs
1021 -- opts from -optl-<blah> (including -l<blah> options)
1022 extra_ld_opts <- getStaticOpts v_Opt_l
1024 [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, basePackage]
1026 let extra_os = if static || no_hs_main
1028 else [ head (library_dirs rts_pkg) ++ "/Main.dll_o",
1029 head (library_dirs std_pkg) ++ "/PrelMain.dll_o" ]
1031 (md_c_flags, _) <- machdepCCOpts
1032 SysTools.runLink ( [ SysTools.Option verb
1033 , SysTools.Option "-o"
1034 , SysTools.FileOption "" output_fn
1036 ++ map SysTools.Option (
1043 #ifdef darwin_TARGET_OS
1044 ++ framework_path_opts
1047 ++ pkg_lib_path_opts
1049 #ifdef darwin_TARGET_OS
1050 ++ pkg_framework_path_opts
1051 ++ pkg_framework_opts
1055 -- parallel only: move binary to another dir -- HWL
1056 ways_ <- readIORef v_Ways
1057 when (WayPar `elem` ways_)
1058 (do success <- runPhase_MoveBinary output_fn
1059 if success then return ()
1060 else throwDyn (InstallationError ("cannot move binary to PVM dir")))
1062 -----------------------------------------------------------------------------
1063 -- Making a DLL (only for Win32)
1065 doMkDLL :: [String] -> [PackageName] -> IO ()
1066 doMkDLL o_files dep_packages = do
1068 static <- readIORef v_Static
1069 no_hs_main <- readIORef v_NoHsMain
1071 o_file <- readIORef v_Output_file
1072 let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
1074 pkg_lib_paths <- getPackageLibraryPath dep_packages
1075 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
1077 lib_paths <- readIORef v_Library_paths
1078 let lib_path_opts = map ("-L"++) lib_paths
1080 pkg_link_opts <- getPackageLinkOpts dep_packages
1082 -- probably _stub.o files
1083 extra_ld_inputs <- readIORef v_Ld_inputs
1085 -- opts from -optdll-<blah>
1086 extra_ld_opts <- getStaticOpts v_Opt_dll
1088 [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, basePackage]
1090 let extra_os = if static || no_hs_main
1092 else [ head (library_dirs rts_pkg) ++ "/Main.dll_o",
1093 head (library_dirs std_pkg) ++ "/PrelMain.dll_o" ]
1095 (md_c_flags, _) <- machdepCCOpts
1097 ([ SysTools.Option verb
1098 , SysTools.Option "-o"
1099 , SysTools.FileOption "" output_fn
1101 ++ map SysTools.Option (
1105 ++ [ "--target=i386-mingw32" ]
1109 ++ pkg_lib_path_opts
1111 ++ (if "--def" `elem` (concatMap words extra_ld_opts)
1113 else [ "--export-all" ])
1116 -- -----------------------------------------------------------------------------
1119 hscNextPhase :: HscLang -> IO Phase
1120 hscNextPhase hsc_lang = do
1121 split <- readIORef v_Split_object_files
1122 return (case hsc_lang of
1124 HscAsm | split -> SplitMangle
1126 HscNothing -> HCc -- dummy (no output will be generated)
1127 HscInterpreted -> HCc -- "" ""
1128 _other -> HCc -- "" ""
1131 hscMaybeAdjustLang :: HscLang -> IO HscLang
1132 hscMaybeAdjustLang current_hsc_lang = do
1133 todo <- readIORef v_GhcMode
1134 keep_hc <- readIORef v_Keep_hc_files
1136 -- don't change the lang if we're interpreting
1137 | current_hsc_lang == HscInterpreted = current_hsc_lang
1138 -- force -fvia-C if we are being asked for a .hc file
1139 | todo == StopBefore HCc || keep_hc = HscC
1140 -- force -fvia-C when profiling or ticky-ticky is on
1141 | opt_SccProfilingOn || opt_DoTickyProfiling = HscC
1142 -- otherwise, stick to the plan
1143 | otherwise = current_hsc_lang