1 -----------------------------------------------------------------------------
2 -- $Id: DriverPipeline.hs,v 1.32 2000/11/20 13:39:26 sewardj Exp $
6 -- (c) Simon Marlow 2000
8 -----------------------------------------------------------------------------
10 module DriverPipeline (
12 -- interfaces for the batch-mode driver
13 GhcMode(..), getGhcMode, v_GhcMode,
14 genPipeline, runPipeline,
16 -- interfaces for the compilation manager (interpreted/batch-mode)
17 preprocess, compile, CompResult(..),
19 -- batch-mode linking interface
23 #include "HsVersions.h"
25 import CmStaticInfo ( GhciMode(..) )
42 import Time ( getClockTime )
52 -----------------------------------------------------------------------------
53 -- GHC modes of operation
56 = DoMkDependHS -- ghc -M
57 | DoMkDLL -- ghc -mk-dll
58 | StopBefore Phase -- ghc -E | -C | -S | -c
59 | DoMake -- ghc --make
60 | DoInteractive -- ghc --interactive
61 | DoLink -- [ the default ]
64 GLOBAL_VAR(v_GhcMode, error "todo", GhcMode)
66 modeFlag :: String -> Maybe GhcMode
67 modeFlag "-M" = Just $ DoMkDependHS
68 modeFlag "-E" = Just $ StopBefore Hsc
69 modeFlag "-C" = Just $ StopBefore HCc
70 modeFlag "-S" = Just $ StopBefore As
71 modeFlag "-c" = Just $ StopBefore Ln
72 modeFlag "--make" = Just $ DoMake
73 modeFlag "--interactive" = Just $ DoInteractive
76 getGhcMode :: [String]
77 -> IO ( [String] -- rest of command line
79 , String -- "GhcMode" flag
82 = case my_partition modeFlag flags of
83 ([] , rest) -> return (rest, DoLink, "") -- default is to do linking
84 ([(flag,one)], rest) -> return (rest, one, flag)
87 "only one of the flags -M, -E, -C, -S, -c, --make, --interactive is allowed")
89 -----------------------------------------------------------------------------
92 -- Herein is all the magic about which phases to run in which order, whether
93 -- the intermediate files should be in /tmp or in the current directory,
94 -- what the suffix of the intermediate files should be, etc.
96 -- The following compilation pipeline algorithm is fairly hacky. A
97 -- better way to do this would be to express the whole comilation as a
98 -- data flow DAG, where the nodes are the intermediate files and the
99 -- edges are the compilation phases. This framework would also work
100 -- nicely if a haskell dependency generator was included in the
103 -- It would also deal much more cleanly with compilation phases that
104 -- generate multiple intermediates, (eg. hsc generates .hc, .hi, and
105 -- possibly stub files), where some of the output files need to be
106 -- processed further (eg. the stub files need to be compiled by the C
109 -- A cool thing to do would then be to execute the data flow graph
110 -- concurrently, automatically taking advantage of extra processors on
111 -- the host machine. For example, when compiling two Haskell files
112 -- where one depends on the other, the data flow graph would determine
113 -- that the C compiler from the first comilation can be overlapped
114 -- with the hsc comilation for the second file.
116 data IntermediateFileType
122 :: GhcMode -- when to stop
123 -> String -- "stop after" flag (for error messages)
124 -> Bool -- True => output is persistent
125 -> HscLang -- preferred output language for hsc
126 -> String -- original filename
127 -> IO [ -- list of phases to run for this file
129 IntermediateFileType, -- keep the output from this phase?
130 String) -- output file suffix
133 genPipeline todo stop_flag persistent_output lang filename
135 split <- readIORef v_Split_object_files
136 mangle <- readIORef v_Do_asm_mangling
137 keep_hc <- readIORef v_Keep_hc_files
138 keep_raw_s <- readIORef v_Keep_raw_s_files
139 keep_s <- readIORef v_Keep_s_files
140 osuf <- readIORef v_Object_suf
143 ----------- ----- ---- --- -- -- - - -
144 (_basename, suffix) = splitFilename filename
146 start_phase = startPhase suffix
148 haskellish = haskellish_suffix suffix
149 cish = cish_suffix suffix
151 -- for a .hc file we need to force lang to HscC
152 real_lang | start_phase == HCc = HscC
156 ----------- ----- ---- --- -- -- - - -
158 | todo == DoMkDependHS = [ Unlit, Cpp, MkDependHS ]
162 HscC | split && mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle,
163 SplitMangle, SplitAs ]
164 | mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle, As ]
166 | otherwise -> [ Unlit, Cpp, Hsc, HCc, As ]
168 HscAsm | split -> [ Unlit, Cpp, Hsc, SplitMangle, SplitAs ]
169 | otherwise -> [ Unlit, Cpp, Hsc, As ]
171 HscJava | split -> not_valid
172 | otherwise -> error "not implemented: compiling via Java"
176 | otherwise = [ ] -- just pass this file through to the linker
178 -- ToDo: this is somewhat cryptic
179 not_valid = throwDyn (OtherError ("invalid option combination"))
180 ----------- ----- ---- --- -- -- - - -
182 -- this shouldn't happen.
183 if start_phase /= Ln && start_phase `notElem` pipeline
184 then throwDyn (OtherError ("can't find starting phase for "
188 -- if we can't find the phase we're supposed to stop before,
189 -- something has gone wrong.
193 && phase `notElem` pipeline
194 && not (phase == As && SplitAs `elem` pipeline)) $
196 ("flag " ++ stop_flag
197 ++ " is incompatible with source file `" ++ filename ++ "'"))
201 ----------- ----- ---- --- -- -- - - -
202 myPhaseInputExt Ln = case osuf of Nothing -> phaseInputExt Ln
204 myPhaseInputExt other = phaseInputExt other
207 :: [Phase] -- raw pipeline
208 -> Phase -- phase to stop before
209 -> [(Phase, IntermediateFileType, String{-file extension-})]
210 annotatePipeline [] _ = []
211 annotatePipeline (Ln:_) _ = []
212 annotatePipeline (phase:next_phase:ps) stop =
213 (phase, keep_this_output, myPhaseInputExt next_phase)
214 : annotatePipeline (next_phase:ps) stop
218 = if persistent_output then Persistent else Temporary
222 Mangle | keep_raw_s -> Persistent
223 As | keep_s -> Persistent
224 HCc | keep_hc -> Persistent
227 -- add information about output files to the pipeline
228 -- the suffix on an output file is determined by the next phase
229 -- in the pipeline, so we add linking to the end of the pipeline
230 -- to force the output from the final phase to be a .o file.
231 stop_phase = case todo of StopBefore phase -> phase
234 annotated_pipeline = annotatePipeline (pipeline ++ [ Ln ]) stop_phase
236 phase_ne p (p1,_,_) = (p1 /= p)
237 ----------- ----- ---- --- -- -- - - -
240 dropWhile (phase_ne start_phase) .
241 foldr (\p ps -> if phase_ne stop_phase p then p:ps else []) []
246 :: [ (Phase, IntermediateFileType, String) ] -- phases to run
247 -> String -- input file
248 -> Bool -- doing linking afterward?
249 -> Bool -- take into account -o when generating output?
250 -> IO String -- return final filename
252 runPipeline pipeline input_fn do_linking use_ofile
253 = pipeLoop pipeline input_fn do_linking use_ofile basename suffix
254 where (basename, suffix) = splitFilename input_fn
256 pipeLoop [] input_fn _ _ _ _ = return input_fn
257 pipeLoop ((phase, keep, o_suffix):phases)
258 input_fn do_linking use_ofile orig_basename orig_suffix
261 output_fn <- outputFileName (null phases) keep o_suffix
263 carry_on <- run_phase phase orig_basename orig_suffix input_fn output_fn
264 -- sometimes we bail out early, eg. when the compiler's recompilation
265 -- checker has determined that recompilation isn't necessary.
267 then do let (_,keep,final_suffix) = last phases
268 ofile <- outputFileName True keep final_suffix
270 else do -- carry on ...
272 pipeLoop phases output_fn do_linking use_ofile orig_basename orig_suffix
275 outputFileName last_phase keep suffix
276 = do o_file <- readIORef v_Output_file
277 if last_phase && not do_linking && use_ofile && isJust o_file
280 Nothing -> error "outputFileName"
281 else if keep == Persistent
282 then odir_ify (orig_basename ++ '.':suffix)
283 else newTempName suffix
285 -------------------------------------------------------------------------------
288 run_phase Unlit _basename _suff input_fn output_fn
289 = do unlit <- readIORef v_Pgm_L
290 unlit_flags <- getOpts opt_L
291 run_something "Literate pre-processor"
292 ("echo '# 1 \"" ++input_fn++"\"' > "++output_fn++" && "
293 ++ unlit ++ ' ':input_fn ++ " - >> " ++ output_fn)
296 -------------------------------------------------------------------------------
299 run_phase Cpp basename suff input_fn output_fn
300 = do src_opts <- getOptionsFromSource input_fn
301 unhandled_flags <- processArgs dynamic_flags src_opts []
303 when (not (null unhandled_flags))
304 (throwDyn (OtherError (
305 basename ++ "." ++ suff
306 ++ ": static flags are not allowed in {-# OPTIONS #-} pragmas:\n\t"
307 ++ unwords unhandled_flags)) (ExitFailure 1))
309 do_cpp <- readState cpp_flag
312 cpp <- readIORef v_Pgm_P
313 hscpp_opts <- getOpts opt_P
314 hs_src_cpp_opts <- readIORef v_Hs_source_cpp_opts
316 cmdline_include_paths <- readIORef v_Include_paths
317 pkg_include_dirs <- getPackageIncludePath
318 let include_paths = map (\p -> "-I"++p) (cmdline_include_paths
322 run_something "C pre-processor"
324 (["echo '{-# LINE 1 \"" ++ input_fn ++ "\" -}'", ">", output_fn, "&&",
329 ++ [ "-x", "c", input_fn, ">>", output_fn ]
332 run_something "Ineffective C pre-processor"
333 ("echo '{-# LINE 1 \"" ++ input_fn ++ "\" -}' > "
334 ++ output_fn ++ " && cat " ++ input_fn
335 ++ " >> " ++ output_fn)
338 -----------------------------------------------------------------------------
341 run_phase MkDependHS basename suff input_fn _output_fn = do
342 src <- readFile input_fn
343 let (import_sources, import_normals, module_name) = getImports src
345 deps_sources <- mapM (findDependency True basename) import_sources
346 deps_normals <- mapM (findDependency False basename) import_normals
347 let deps = deps_sources ++ deps_normals
349 osuf_opt <- readIORef v_Object_suf
350 let osuf = case osuf_opt of
351 Nothing -> phaseInputExt Ln
354 extra_suffixes <- readIORef v_Dep_suffixes
355 let suffixes = osuf : map (++ ('_':osuf)) extra_suffixes
356 ofiles = map (\suf -> basename ++ '.':suf) suffixes
358 objs <- mapM odir_ify ofiles
360 hdl <- readIORef v_Dep_tmp_hdl
362 -- std dependency of the object(s) on the source file
363 hPutStrLn hdl (unwords objs ++ " : " ++ basename ++ '.':suff)
365 let genDep (dep, False {- not an hi file -}) =
366 hPutStrLn hdl (unwords objs ++ " : " ++ dep)
367 genDep (dep, True {- is an hi file -}) = do
368 hisuf <- readIORef v_Hi_suf
369 let dep_base = remove_suffix '.' dep
370 deps = (dep_base ++ hisuf)
371 : map (\suf -> dep_base ++ suf ++ '_':hisuf) extra_suffixes
372 -- length objs should be == length deps
373 sequence_ (zipWith (\o d -> hPutStrLn hdl (o ++ " : " ++ d)) objs deps)
375 mapM genDep [ d | Just d <- deps ]
379 -- add the lines to dep_makefile:
383 -- if the dependency is on something other than a .hi file:
384 -- this.o this.p_o ... : dep
386 -- if the import is {-# SOURCE #-}
387 -- this.o this.p_o ... : dep.hi-boot[-$vers]
390 -- this.o ... : dep.hi
391 -- this.p_o ... : dep.p_hi
394 -- (where .o is $osuf, and the other suffixes come from
395 -- the cmdline -s options).
397 -----------------------------------------------------------------------------
400 -- Compilation of a single module, in "legacy" mode (_not_ under
401 -- the direction of the compilation manager).
402 run_phase Hsc basename suff input_fn output_fn
405 -- we add the current directory (i.e. the directory in which
406 -- the .hs files resides) to the import path, since this is
407 -- what gcc does, and it's probably what you want.
408 let current_dir = getdir basename
410 paths <- readIORef v_Include_paths
411 writeIORef v_Include_paths (current_dir : paths)
413 -- figure out where to put the .hi file
414 ohi <- readIORef v_Output_hi
415 hisuf <- readIORef v_Hi_suf
416 let hifile = case ohi of
417 Nothing -> basename ++ '.':hisuf
420 -- figure out if the source has changed, for recompilation avoidance.
421 -- only do this if we're eventually going to generate a .o file.
422 -- (ToDo: do when generating .hc files too?)
424 -- Setting source_unchanged to True means that M.o seems
425 -- to be up to date wrt M.hs; so no need to recompile unless imports have
426 -- changed (which the compiler itself figures out).
427 -- Setting source_unchanged to False tells the compiler that M.o is out of
428 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
429 do_recomp <- readIORef v_Recomp
430 todo <- readIORef v_GhcMode
431 o_file <- odir_ify (basename ++ '.':phaseInputExt Ln)
433 if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln ))
435 else do t1 <- getModificationTime (basename ++ '.':suff)
436 o_file_exists <- doesFileExist o_file
438 then return False -- Need to recompile
439 else do t2 <- getModificationTime o_file
444 -- build a ModuleLocation to pass to hscMain.
445 let location = ModuleLocation {
446 ml_hs_file = Nothing,
447 ml_hspp_file = Just input_fn,
448 ml_hi_file = Just hifile,
449 ml_obj_file = Just o_file
453 dyn_flags <- readIORef v_DynFlags
456 pcs <- initPersistentCompilerState
457 result <- hscMain OneShot
458 dyn_flags{ hscOutName = output_fn }
462 emptyModuleEnv -- HomeSymbolTable
463 emptyModuleEnv -- HomeIfaceTable
468 HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1));
470 HscOK details maybe_iface maybe_stub_h maybe_stub_c
471 _maybe_interpreted_code pcs -> do
474 maybe_stub_o <- dealWithStubs basename maybe_stub_h maybe_stub_c
477 Just stub_o -> add v_Ld_inputs stub_o
479 let keep_going = case maybe_iface of Just _ -> True; Nothing -> False
483 -----------------------------------------------------------------------------
486 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
487 -- way too many hacks, and I can't say I've ever used it anyway.
489 run_phase cc_phase _basename _suff input_fn output_fn
490 | cc_phase == Cc || cc_phase == HCc
491 = do cc <- readIORef v_Pgm_c
492 cc_opts <- (getOpts opt_c)
493 cmdline_include_dirs <- readIORef v_Include_paths
495 let hcc = cc_phase == HCc
497 -- add package include paths even if we're just compiling
498 -- .c files; this is the Value Add(TM) that using
499 -- ghc instead of gcc gives you :)
500 pkg_include_dirs <- getPackageIncludePath
501 let include_paths = map (\p -> "-I"++p) (cmdline_include_dirs
504 c_includes <- getPackageCIncludes
505 cmdline_includes <- readState cmdline_hc_includes -- -#include options
507 let cc_injects | hcc = unlines (map mk_include
508 (c_includes ++ reverse cmdline_includes))
512 '"':_{-"-} -> "#include "++h_file
513 '<':_ -> "#include "++h_file
514 _ -> "#include \""++h_file++"\""
516 cc_help <- newTempName "c"
517 h <- openFile cc_help WriteMode
519 hPutStrLn h ("#include \"" ++ input_fn ++ "\"\n")
522 ccout <- newTempName "ccout"
524 mangle <- readIORef v_Do_asm_mangling
525 (md_c_flags, md_regd_c_flags) <- machdepCCOpts
529 o2 <- readIORef v_minus_o2_for_C
530 let opt_flag | o2 = "-O2"
533 pkg_extra_cc_opts <- getPackageExtraCcOpts
535 split_objs <- readIORef v_Split_object_files
536 let split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
539 excessPrecision <- readIORef v_Excess_precision
541 run_something "C Compiler"
542 (unwords ([ cc, "-x", "c", cc_help, "-o", output_fn ]
544 ++ (if cc_phase == HCc && mangle
547 ++ [ verb, "-S", "-Wimplicit", opt_flag ]
548 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
551 #ifdef mingw32_TARGET_OS
554 ++ (if excessPrecision then [] else [ "-ffloat-store" ])
561 -- ToDo: postprocess the output from gcc
563 -----------------------------------------------------------------------------
566 run_phase Mangle _basename _suff input_fn output_fn
567 = do mangler <- readIORef v_Pgm_m
568 mangler_opts <- getOpts opt_m
570 if (prefixMatch "i386" cTARGETPLATFORM)
571 then do n_regs <- readState stolen_x86_regs
572 return [ show n_regs ]
574 run_something "Assembly Mangler"
577 ++ [ input_fn, output_fn ]
582 -----------------------------------------------------------------------------
585 run_phase SplitMangle _basename _suff input_fn _output_fn
586 = do splitter <- readIORef v_Pgm_s
588 -- this is the prefix used for the split .s files
589 tmp_pfx <- readIORef v_TmpDir
591 let split_s_prefix = tmp_pfx ++ "/ghc" ++ show x
592 writeIORef v_Split_prefix split_s_prefix
593 addFilesToClean [split_s_prefix ++ "__*"] -- d:-)
595 -- allocate a tmp file to put the no. of split .s files in (sigh)
596 n_files <- newTempName "n_files"
598 run_something "Split Assembly File"
605 -- save the number of split files for future references
606 s <- readFile n_files
607 let n = read s :: Int
608 writeIORef v_N_split_files n
611 -----------------------------------------------------------------------------
614 run_phase As _basename _suff input_fn output_fn
615 = do as <- readIORef v_Pgm_a
616 as_opts <- getOpts opt_a
618 cmdline_include_paths <- readIORef v_Include_paths
619 let cmdline_include_flags = map (\p -> "-I"++p) cmdline_include_paths
620 run_something "Assembler"
621 (unwords (as : as_opts
622 ++ cmdline_include_flags
623 ++ [ "-c", input_fn, "-o", output_fn ]
627 run_phase SplitAs basename _suff _input_fn _output_fn
628 = do as <- readIORef v_Pgm_a
629 as_opts <- getOpts opt_a
631 split_s_prefix <- readIORef v_Split_prefix
632 n <- readIORef v_N_split_files
634 odir <- readIORef v_Output_dir
635 let real_odir = case odir of
639 let assemble_file n = do
640 let input_s = split_s_prefix ++ "__" ++ show n ++ ".s"
641 let output_o = newdir real_odir
642 (basename ++ "__" ++ show n ++ ".o")
643 real_o <- osuf_ify output_o
644 run_something "Assembler"
645 (unwords (as : as_opts
646 ++ [ "-c", "-o", real_o, input_s ]
649 mapM_ assemble_file [1..n]
652 -----------------------------------------------------------------------------
655 doLink :: [String] -> IO ()
657 ln <- readIORef v_Pgm_l
659 static <- readIORef v_Static
660 let imp = if static then "" else "_imp"
661 no_hs_main <- readIORef v_NoHsMain
663 o_file <- readIORef v_Output_file
664 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
666 pkg_lib_paths <- getPackageLibraryPath
667 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
669 lib_paths <- readIORef v_Library_paths
670 let lib_path_opts = map ("-L"++) lib_paths
672 pkg_libs <- getPackageLibraries
673 let pkg_lib_opts = map (\lib -> "-l" ++ lib ++ imp) pkg_libs
675 libs <- readIORef v_Cmdline_libraries
676 let lib_opts = map ("-l"++) (reverse libs)
677 -- reverse because they're added in reverse order from the cmd line
679 pkg_extra_ld_opts <- getPackageExtraLdOpts
681 -- probably _stub.o files
682 extra_ld_inputs <- readIORef v_Ld_inputs
684 -- opts from -optl-<blah>
685 extra_ld_opts <- getStaticOpts v_Opt_l
687 rts_pkg <- getPackageDetails ["rts"]
688 std_pkg <- getPackageDetails ["std"]
689 #ifdef mingw32_TARGET_OS
690 let extra_os = if static || no_hs_main
692 -- else [ head (lib_paths (head rts_pkg)) ++ "/Main.dll_o",
693 -- head (lib_paths (head std_pkg)) ++ "/PrelMain.dll_o" ]
696 (md_c_flags, _) <- machdepCCOpts
697 run_something "Linker"
699 ([ ln, verb, "-o", output_fn ]
702 #ifdef mingw32_TARGET_OS
712 #ifdef mingw32_TARGET_OS
713 ++ if static then [ "-u _PrelMain_mainIO_closure" , "-u ___init_PrelMain"] else []
715 ++ [ "-u PrelMain_mainIO_closure" , "-u __init_PrelMain"]
720 -----------------------------------------------------------------------------
721 -- Just preprocess a file, put the result in a temp. file (used by the
722 -- compilation manager during the summary phase).
724 preprocess :: FilePath -> IO FilePath
725 preprocess filename =
726 ASSERT(haskellish_file filename)
727 do init_driver_state <- readIORef v_InitDriverState
728 writeIORef v_Driver_state init_driver_state
730 pipeline <- genPipeline (StopBefore Hsc) ("preprocess") False
731 defaultHscLang filename
732 runPipeline pipeline filename False{-no linking-} False{-no -o flag-}
735 -----------------------------------------------------------------------------
736 -- Compile a single module, under the control of the compilation manager.
738 -- This is the interface between the compilation manager and the
739 -- compiler proper (hsc), where we deal with tedious details like
740 -- reading the OPTIONS pragma from the source file, and passing the
741 -- output of hsc through the C compiler.
743 -- The driver sits between 'compile' and 'hscMain', translating calls
744 -- to the former into calls to the latter, and results from the latter
745 -- into results from the former. It does things like preprocessing
746 -- the .hs file if necessary, and compiling up the .stub_c files to
747 -- generate Linkables.
749 -- NB. No old interface can also mean that the source has changed.
751 compile :: GhciMode -- distinguish batch from interactive
752 -> ModSummary -- summary, including source
753 -> Bool -- source unchanged?
754 -> Maybe ModIface -- old interface, if available
755 -> HomeSymbolTable -- for home module ModDetails
756 -> HomeIfaceTable -- for home module Ifaces
757 -> PersistentCompilerState -- persistent compiler state
761 = CompOK ModDetails -- new details (HST additions)
762 (Maybe (ModIface, Linkable))
763 -- summary and code; Nothing => compilation not reqd
764 -- (old summary and code are still valid)
765 PersistentCompilerState -- updated PCS
767 | CompErrs PersistentCompilerState -- updated PCS
770 compile ghci_mode summary source_unchanged old_iface hst hit pcs = do
771 verb <- readIORef v_Verbose
772 when verb (hPutStrLn stderr
773 (showSDoc (text "compile: compiling"
774 <+> ppr (name_of_summary summary))))
776 init_dyn_flags <- readIORef v_InitDynFlags
777 writeIORef v_DynFlags init_dyn_flags
778 init_driver_state <- readIORef v_InitDriverState
779 writeIORef v_Driver_state init_driver_state
781 let location = ms_location summary
782 let input_fn = unJust "compile:hs" (ml_hs_file location)
783 let input_fnpp = unJust "compile:hspp" (ml_hspp_file location)
785 when verb (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
787 opts <- getOptionsFromSource input_fnpp
788 processArgs dynamic_flags opts []
789 dyn_flags <- readIORef v_DynFlags
791 let hsc_lang = hscLang dyn_flags
792 output_fn <- case hsc_lang of
793 HscAsm -> newTempName (phaseInputExt As)
794 HscC -> newTempName (phaseInputExt HCc)
795 HscJava -> newTempName "java" -- ToDo
796 HscInterpreted -> return (error "no output file")
799 hsc_result <- hscMain ghci_mode dyn_flags{ hscOutName = output_fn }
801 location old_iface hst hit pcs
804 HscFail pcs -> return (CompErrs pcs);
806 HscOK details maybe_iface
807 maybe_stub_h maybe_stub_c maybe_interpreted_code pcs -> do
809 -- if no compilation happened, bail out early
810 case maybe_iface of {
811 Nothing -> return (CompOK details Nothing pcs);
814 let (basename, _) = splitFilename input_fn
815 maybe_stub_o <- dealWithStubs basename maybe_stub_h maybe_stub_c
816 let stub_unlinked = case maybe_stub_o of
818 Just stub_o -> [ DotO stub_o ]
820 (hs_unlinked, unlinked_time) <-
823 -- in interpreted mode, just return the compiled code
824 -- as our "unlinked" object.
826 case maybe_interpreted_code of
827 Just (code,itbl_env) -> do tm <- getClockTime
828 return ([Trees code itbl_env], tm)
829 Nothing -> panic "compile: no interpreted code"
831 -- we're in batch mode: finish the compilation pipeline.
832 _other -> do pipe <- genPipeline (StopBefore Ln) "" True
834 -- runPipeline takes input_fn so it can split off
835 -- the base name and use it as the base of
836 -- the output object file.
837 let (basename, suffix) = splitFilename input_fn
838 o_file <- pipeLoop pipe output_fn False False
840 o_time <- getModificationTime o_file
841 return ([DotO o_file], o_time)
843 let linkable = LM unlinked_time (moduleName (ms_mod summary))
844 (hs_unlinked ++ stub_unlinked)
846 return (CompOK details (Just (iface, linkable)) pcs)
850 -----------------------------------------------------------------------------
851 -- stub .h and .c files (for foreign export support)
853 dealWithStubs basename maybe_stub_h maybe_stub_c
855 = do let stub_h = basename ++ "_stub.h"
856 let stub_c = basename ++ "_stub.c"
858 -- copy the .stub_h file into the current dir if necessary
861 Just tmp_stub_h -> do
862 run_something "Copy stub .h file"
863 ("cp " ++ tmp_stub_h ++ ' ':stub_h)
865 -- #include <..._stub.h> in .hc file
866 addCmdlineHCInclude tmp_stub_h -- hack
868 -- copy the .stub_c file into the current dir, and compile it, if necessary
870 Nothing -> return Nothing
871 Just tmp_stub_c -> do -- copy the _stub.c file into the current dir
872 run_something "Copy stub .c file"
874 "rm -f", stub_c, "&&",
875 "echo \'#include \""++stub_h++"\"\' >"++stub_c, " &&",
876 "cat", tmp_stub_c, ">> ", stub_c
879 -- compile the _stub.c file w/ gcc
880 pipeline <- genPipeline (StopBefore Ln) "" True
881 defaultHscLang stub_c
882 stub_o <- runPipeline pipeline stub_c False{-no linking-}
883 False{-no -o option-}