1 -----------------------------------------------------------------------------
2 -- $Id: DriverPipeline.hs,v 1.44 2000/12/20 15:44:29 rrt Exp $
6 -- (c) Simon Marlow 2000
8 -----------------------------------------------------------------------------
10 #include "../includes/config.h"
12 module DriverPipeline (
14 -- interfaces for the batch-mode driver
15 GhcMode(..), getGhcMode, v_GhcMode,
16 genPipeline, runPipeline,
18 -- interfaces for the compilation manager (interpreted/batch-mode)
19 preprocess, compile, CompResult(..),
21 -- batch-mode linking interface
25 #include "HsVersions.h"
27 import CmStaticInfo ( GhciMode(..) )
46 import Time ( getClockTime )
56 -----------------------------------------------------------------------------
57 -- GHC modes of operation
60 = DoMkDependHS -- ghc -M
61 | DoMkDLL -- ghc -mk-dll
62 | StopBefore Phase -- ghc -E | -C | -S | -c
63 | DoMake -- ghc --make
64 | DoInteractive -- ghc --interactive
65 | DoLink -- [ the default ]
68 GLOBAL_VAR(v_GhcMode, error "todo", GhcMode)
70 modeFlag :: String -> Maybe GhcMode
71 modeFlag "-M" = Just $ DoMkDependHS
72 modeFlag "-E" = Just $ StopBefore Hsc
73 modeFlag "-C" = Just $ StopBefore HCc
74 modeFlag "-S" = Just $ StopBefore As
75 modeFlag "-c" = Just $ StopBefore Ln
76 modeFlag "--make" = Just $ DoMake
77 modeFlag "--interactive" = Just $ DoInteractive
80 getGhcMode :: [String]
81 -> IO ( [String] -- rest of command line
83 , String -- "GhcMode" flag
86 = case my_partition modeFlag flags of
87 ([] , rest) -> return (rest, DoLink, "") -- default is to do linking
88 ([(flag,one)], rest) -> return (rest, one, flag)
91 "only one of the flags -M, -E, -C, -S, -c, --make, --interactive is allowed")
93 -----------------------------------------------------------------------------
96 -- Herein is all the magic about which phases to run in which order, whether
97 -- the intermediate files should be in /tmp or in the current directory,
98 -- what the suffix of the intermediate files should be, etc.
100 -- The following compilation pipeline algorithm is fairly hacky. A
101 -- better way to do this would be to express the whole compilation as a
102 -- data flow DAG, where the nodes are the intermediate files and the
103 -- edges are the compilation phases. This framework would also work
104 -- nicely if a haskell dependency generator was included in the
107 -- It would also deal much more cleanly with compilation phases that
108 -- generate multiple intermediates, (eg. hsc generates .hc, .hi, and
109 -- possibly stub files), where some of the output files need to be
110 -- processed further (eg. the stub files need to be compiled by the C
113 -- A cool thing to do would then be to execute the data flow graph
114 -- concurrently, automatically taking advantage of extra processors on
115 -- the host machine. For example, when compiling two Haskell files
116 -- where one depends on the other, the data flow graph would determine
117 -- that the C compiler from the first compilation can be overlapped
118 -- with the hsc compilation for the second file.
120 data IntermediateFileType
126 :: GhcMode -- when to stop
127 -> String -- "stop after" flag (for error messages)
128 -> Bool -- True => output is persistent
129 -> HscLang -- preferred output language for hsc
130 -> String -- original filename
131 -> IO [ -- list of phases to run for this file
133 IntermediateFileType, -- keep the output from this phase?
134 String) -- output file suffix
137 genPipeline todo stop_flag persistent_output lang filename
139 split <- readIORef v_Split_object_files
140 mangle <- readIORef v_Do_asm_mangling
141 keep_hc <- readIORef v_Keep_hc_files
142 keep_raw_s <- readIORef v_Keep_raw_s_files
143 keep_s <- readIORef v_Keep_s_files
144 osuf <- readIORef v_Object_suf
147 ----------- ----- ---- --- -- -- - - -
148 (_basename, suffix) = splitFilename filename
150 start_phase = startPhase suffix
152 haskellish = haskellish_suffix suffix
153 cish = cish_suffix suffix
155 -- for a .hc file we need to force lang to HscC
156 real_lang | start_phase == HCc = HscC
160 ----------- ----- ---- --- -- -- - - -
162 | todo == DoMkDependHS = [ Unlit, Cpp, MkDependHS ]
166 HscC | split && mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle,
167 SplitMangle, SplitAs ]
168 | mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle, As ]
170 | otherwise -> [ Unlit, Cpp, Hsc, HCc, As ]
172 HscAsm | split -> [ Unlit, Cpp, Hsc, SplitMangle, SplitAs ]
173 | otherwise -> [ Unlit, Cpp, Hsc, As ]
175 HscJava | split -> not_valid
176 | otherwise -> error "not implemented: compiling via Java"
180 | otherwise = [ ] -- just pass this file through to the linker
182 -- ToDo: this is somewhat cryptic
183 not_valid = throwDyn (OtherError ("invalid option combination"))
184 ----------- ----- ---- --- -- -- - - -
186 -- this shouldn't happen.
187 if start_phase /= Ln && start_phase `notElem` pipeline
188 then throwDyn (OtherError ("can't find starting phase for "
192 -- if we can't find the phase we're supposed to stop before,
193 -- something has gone wrong.
197 && phase `notElem` pipeline
198 && not (phase == As && SplitAs `elem` pipeline)) $
200 ("flag " ++ stop_flag
201 ++ " is incompatible with source file `" ++ filename ++ "'"))
205 ----------- ----- ---- --- -- -- - - -
206 myPhaseInputExt Ln = case osuf of Nothing -> phaseInputExt Ln
208 myPhaseInputExt other = phaseInputExt other
211 :: [Phase] -- raw pipeline
212 -> Phase -- phase to stop before
213 -> [(Phase, IntermediateFileType, String{-file extension-})]
214 annotatePipeline [] _ = []
215 annotatePipeline (Ln:_) _ = []
216 annotatePipeline (phase:next_phase:ps) stop =
217 (phase, keep_this_output, myPhaseInputExt next_phase)
218 : annotatePipeline (next_phase:ps) stop
222 = if persistent_output then Persistent else Temporary
226 Mangle | keep_raw_s -> Persistent
227 As | keep_s -> Persistent
228 HCc | keep_hc -> Persistent
231 -- add information about output files to the pipeline
232 -- the suffix on an output file is determined by the next phase
233 -- in the pipeline, so we add linking to the end of the pipeline
234 -- to force the output from the final phase to be a .o file.
235 stop_phase = case todo of
236 StopBefore As | split -> SplitAs
237 StopBefore phase -> phase
240 annotated_pipeline = annotatePipeline (pipeline ++ [ Ln ]) stop_phase
242 phase_ne p (p1,_,_) = (p1 /= p)
243 ----------- ----- ---- --- -- -- - - -
246 dropWhile (phase_ne start_phase) .
247 foldr (\p ps -> if phase_ne stop_phase p then p:ps else []) []
252 :: [ (Phase, IntermediateFileType, String) ] -- phases to run
253 -> String -- input file
254 -> Bool -- doing linking afterward?
255 -> Bool -- take into account -o when generating output?
256 -> IO String -- return final filename
258 runPipeline pipeline input_fn do_linking use_ofile
259 = pipeLoop pipeline input_fn do_linking use_ofile basename suffix
260 where (basename, suffix) = splitFilename input_fn
262 pipeLoop [] input_fn _ _ _ _ = return input_fn
263 pipeLoop ((phase, keep, o_suffix):phases)
264 input_fn do_linking use_ofile orig_basename orig_suffix
267 output_fn <- outputFileName (null phases) keep o_suffix
269 carry_on <- run_phase phase orig_basename orig_suffix input_fn output_fn
270 -- sometimes we bail out early, eg. when the compiler's recompilation
271 -- checker has determined that recompilation isn't necessary.
273 then do let (_,keep,final_suffix) = last phases
274 ofile <- outputFileName True keep final_suffix
276 else do -- carry on ...
278 pipeLoop phases output_fn do_linking use_ofile orig_basename orig_suffix
281 outputFileName last_phase keep suffix
282 = do o_file <- readIORef v_Output_file
283 if last_phase && not do_linking && use_ofile && isJust o_file
286 Nothing -> error "outputFileName"
287 else if keep == Persistent
288 then odir_ify (orig_basename ++ '.':suffix)
289 else newTempName suffix
291 -------------------------------------------------------------------------------
294 run_phase Unlit _basename _suff input_fn output_fn
295 = do unlit <- readIORef v_Pgm_L
296 unlit_flags <- getOpts opt_L
297 runSomething "Literate pre-processor"
298 ("echo '# 1 \"" ++input_fn++"\"' > "++output_fn++" && "
299 ++ unlit ++ ' ':input_fn ++ " - >> " ++ output_fn)
302 -------------------------------------------------------------------------------
305 run_phase Cpp basename suff input_fn output_fn
306 = do src_opts <- getOptionsFromSource input_fn
307 unhandled_flags <- processArgs dynamic_flags src_opts []
309 when (not (null unhandled_flags))
310 (throwDyn (OtherError (
311 basename ++ "." ++ suff
312 ++ ": static flags are not allowed in {-# OPTIONS #-} pragmas:\n\t"
313 ++ unwords unhandled_flags)) (ExitFailure 1))
315 do_cpp <- readState cpp_flag
318 cpp <- readIORef v_Pgm_P
319 hscpp_opts <- getOpts opt_P
320 hs_src_cpp_opts <- readIORef v_Hs_source_cpp_opts
322 cmdline_include_paths <- readIORef v_Include_paths
323 pkg_include_dirs <- getPackageIncludePath
324 let include_paths = map (\p -> "-I"++p) (cmdline_include_paths
329 runSomething "C pre-processor"
331 (["echo '{-# LINE 1 \"" ++ input_fn ++ "\" -}'", ">", output_fn, "&&",
336 ++ [ "-x", "c", input_fn, ">>", output_fn ]
339 runSomething "Ineffective C pre-processor"
340 ("echo '{-# LINE 1 \"" ++ input_fn ++ "\" -}' > "
341 ++ output_fn ++ " && cat " ++ input_fn
342 ++ " >> " ++ output_fn)
345 -----------------------------------------------------------------------------
348 run_phase MkDependHS basename suff input_fn _output_fn = do
349 src <- readFile input_fn
350 let (import_sources, import_normals, module_name) = getImports src
352 deps_sources <- mapM (findDependency True basename) import_sources
353 deps_normals <- mapM (findDependency False basename) import_normals
354 let deps = deps_sources ++ deps_normals
356 osuf_opt <- readIORef v_Object_suf
357 let osuf = case osuf_opt of
358 Nothing -> phaseInputExt Ln
361 extra_suffixes <- readIORef v_Dep_suffixes
362 let suffixes = osuf : map (++ ('_':osuf)) extra_suffixes
363 ofiles = map (\suf -> basename ++ '.':suf) suffixes
365 objs <- mapM odir_ify ofiles
367 hdl <- readIORef v_Dep_tmp_hdl
369 -- std dependency of the object(s) on the source file
370 hPutStrLn hdl (unwords objs ++ " : " ++ basename ++ '.':suff)
372 let genDep (dep, False {- not an hi file -}) =
373 hPutStrLn hdl (unwords objs ++ " : " ++ dep)
374 genDep (dep, True {- is an hi file -}) = do
375 hisuf <- readIORef v_Hi_suf
376 let dep_base = remove_suffix '.' dep
377 deps = (dep_base ++ hisuf)
378 : map (\suf -> dep_base ++ suf ++ '_':hisuf) extra_suffixes
379 -- length objs should be == length deps
380 sequence_ (zipWith (\o d -> hPutStrLn hdl (o ++ " : " ++ d)) objs deps)
382 mapM genDep [ d | Just d <- deps ]
386 -- add the lines to dep_makefile:
390 -- if the dependency is on something other than a .hi file:
391 -- this.o this.p_o ... : dep
393 -- if the import is {-# SOURCE #-}
394 -- this.o this.p_o ... : dep.hi-boot[-$vers]
397 -- this.o ... : dep.hi
398 -- this.p_o ... : dep.p_hi
401 -- (where .o is $osuf, and the other suffixes come from
402 -- the cmdline -s options).
404 -----------------------------------------------------------------------------
407 -- Compilation of a single module, in "legacy" mode (_not_ under
408 -- the direction of the compilation manager).
409 run_phase Hsc basename suff input_fn output_fn
412 -- we add the current directory (i.e. the directory in which
413 -- the .hs files resides) to the import path, since this is
414 -- what gcc does, and it's probably what you want.
415 let current_dir = getdir basename
417 paths <- readIORef v_Include_paths
418 writeIORef v_Include_paths (current_dir : paths)
420 -- figure out where to put the .hi file
421 ohi <- readIORef v_Output_hi
422 hisuf <- readIORef v_Hi_suf
423 let hifile = case ohi of
424 Nothing -> basename ++ '.':hisuf
427 -- figure out if the source has changed, for recompilation avoidance.
428 -- only do this if we're eventually going to generate a .o file.
429 -- (ToDo: do when generating .hc files too?)
431 -- Setting source_unchanged to True means that M.o seems
432 -- to be up to date wrt M.hs; so no need to recompile unless imports have
433 -- changed (which the compiler itself figures out).
434 -- Setting source_unchanged to False tells the compiler that M.o is out of
435 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
436 do_recomp <- readIORef v_Recomp
437 todo <- readIORef v_GhcMode
438 o_file' <- odir_ify (basename ++ '.':phaseInputExt Ln)
439 o_file <- osuf_ify o_file'
441 if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln ))
443 else do t1 <- getModificationTime (basename ++ '.':suff)
444 o_file_exists <- doesFileExist o_file
446 then return False -- Need to recompile
447 else do t2 <- getModificationTime o_file
452 -- build a ModuleLocation to pass to hscMain.
453 let location = ModuleLocation {
454 ml_hs_file = Nothing,
455 ml_hspp_file = Just input_fn,
456 ml_hi_file = Just hifile,
457 ml_obj_file = Just o_file
461 dyn_flags <- readIORef v_DynFlags
464 pcs <- initPersistentCompilerState
465 result <- hscMain OneShot
466 dyn_flags{ hscOutName = output_fn }
470 emptyModuleEnv -- HomeSymbolTable
471 emptyModuleEnv -- HomeIfaceTable
476 HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1));
478 HscNoRecomp pcs details iface ->
480 runSomething "Touching object file" ("touch " ++ o_file);
484 HscRecomp pcs details iface maybe_stub_h maybe_stub_c
485 _maybe_interpreted_code -> do
488 maybe_stub_o <- dealWithStubs basename maybe_stub_h maybe_stub_c
491 Just stub_o -> add v_Ld_inputs stub_o
496 -----------------------------------------------------------------------------
499 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
500 -- way too many hacks, and I can't say I've ever used it anyway.
502 run_phase cc_phase _basename _suff input_fn output_fn
503 | cc_phase == Cc || cc_phase == HCc
504 = do cc <- readIORef v_Pgm_c
505 cc_opts <- (getOpts opt_c)
506 cmdline_include_dirs <- readIORef v_Include_paths
508 let hcc = cc_phase == HCc
510 -- add package include paths even if we're just compiling
511 -- .c files; this is the Value Add(TM) that using
512 -- ghc instead of gcc gives you :)
513 pkg_include_dirs <- getPackageIncludePath
514 let include_paths = map (\p -> "-I"++p) (cmdline_include_dirs
517 c_includes <- getPackageCIncludes
518 cmdline_includes <- readState cmdline_hc_includes -- -#include options
520 let cc_injects | hcc = unlines (map mk_include
521 (c_includes ++ reverse cmdline_includes))
525 '"':_{-"-} -> "#include "++h_file
526 '<':_ -> "#include "++h_file
527 _ -> "#include \""++h_file++"\""
529 cc_help <- newTempName "c"
530 h <- openFile cc_help WriteMode
532 hPutStrLn h ("#include \"" ++ input_fn ++ "\"\n")
535 ccout <- newTempName "ccout"
537 mangle <- readIORef v_Do_asm_mangling
538 (md_c_flags, md_regd_c_flags) <- machdepCCOpts
542 o2 <- readIORef v_minus_o2_for_C
543 let opt_flag | o2 = "-O2"
546 pkg_extra_cc_opts <- getPackageExtraCcOpts
548 split_objs <- readIORef v_Split_object_files
549 let split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
552 excessPrecision <- readIORef v_Excess_precision
554 runSomething "C Compiler"
555 (unwords ([ cc, "-x", "c", cc_help, "-o", output_fn ]
557 ++ (if cc_phase == HCc && mangle
560 ++ [ verb, "-S", "-Wimplicit", opt_flag ]
561 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
564 ++ (if excessPrecision then [] else [ "-ffloat-store" ])
571 -- ToDo: postprocess the output from gcc
573 -----------------------------------------------------------------------------
576 run_phase Mangle _basename _suff input_fn output_fn
577 = do mangler <- readIORef v_Pgm_m
578 mangler_opts <- getOpts opt_m
580 if (prefixMatch "i386" cTARGETPLATFORM)
581 then do n_regs <- readState stolen_x86_regs
582 return [ show n_regs ]
584 runSomething "Assembly Mangler"
587 ++ [ input_fn, output_fn ]
592 -----------------------------------------------------------------------------
595 run_phase SplitMangle _basename _suff input_fn _output_fn
596 = do splitter <- readIORef v_Pgm_s
598 -- this is the prefix used for the split .s files
599 tmp_pfx <- readIORef v_TmpDir
601 let split_s_prefix = tmp_pfx ++ "/ghc" ++ show x
602 writeIORef v_Split_prefix split_s_prefix
603 addFilesToClean [split_s_prefix ++ "__*"] -- d:-)
605 -- allocate a tmp file to put the no. of split .s files in (sigh)
606 n_files <- newTempName "n_files"
608 runSomething "Split Assembly File"
615 -- save the number of split files for future references
616 s <- readFile n_files
617 let n = read s :: Int
618 writeIORef v_N_split_files n
621 -----------------------------------------------------------------------------
624 run_phase As _basename _suff input_fn output_fn
625 = do as <- readIORef v_Pgm_a
626 as_opts <- getOpts opt_a
628 cmdline_include_paths <- readIORef v_Include_paths
629 let cmdline_include_flags = map (\p -> "-I"++p) cmdline_include_paths
630 runSomething "Assembler"
631 (unwords (as : as_opts
632 ++ cmdline_include_flags
633 ++ [ "-c", input_fn, "-o", output_fn ]
637 run_phase SplitAs basename _suff _input_fn _output_fn
638 = do as <- readIORef v_Pgm_a
639 as_opts <- getOpts opt_a
641 split_s_prefix <- readIORef v_Split_prefix
642 n <- readIORef v_N_split_files
644 odir <- readIORef v_Output_dir
645 let real_odir = case odir of
649 let assemble_file n = do
650 let input_s = split_s_prefix ++ "__" ++ show n ++ ".s"
651 let output_o = newdir real_odir
652 (basename ++ "__" ++ show n ++ ".o")
653 real_o <- osuf_ify output_o
654 runSomething "Assembler"
655 (unwords (as : as_opts
656 ++ [ "-c", "-o", real_o, input_s ]
659 mapM_ assemble_file [1..n]
662 -----------------------------------------------------------------------------
665 doLink :: [String] -> IO ()
667 ln <- readIORef v_Pgm_l
669 static <- readIORef v_Static
670 let imp = if static then "" else "_imp"
671 no_hs_main <- readIORef v_NoHsMain
673 o_file <- readIORef v_Output_file
674 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
676 pkg_lib_paths <- getPackageLibraryPath
677 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
679 lib_paths <- readIORef v_Library_paths
680 let lib_path_opts = map ("-L"++) lib_paths
682 pkg_libs <- getPackageLibraries
683 let pkg_lib_opts = map (\lib -> "-l" ++ lib ++ imp) pkg_libs
685 libs <- readIORef v_Cmdline_libraries
686 let lib_opts = map ("-l"++) (reverse libs)
687 -- reverse because they're added in reverse order from the cmd line
689 pkg_extra_ld_opts <- getPackageExtraLdOpts
691 -- probably _stub.o files
692 extra_ld_inputs <- readIORef v_Ld_inputs
694 -- opts from -optl-<blah>
695 extra_ld_opts <- getStaticOpts v_Opt_l
697 rts_pkg <- getPackageDetails ["rts"]
698 std_pkg <- getPackageDetails ["std"]
699 #ifdef mingw32_TARGET_OS
700 let extra_os = if static || no_hs_main
702 -- else [ head (lib_paths (head rts_pkg)) ++ "/Main.dll_o",
703 -- head (lib_paths (head std_pkg)) ++ "/PrelMain.dll_o" ]
706 (md_c_flags, _) <- machdepCCOpts
707 runSomething "Linker"
709 ([ ln, verb, "-o", output_fn ]
712 #ifdef mingw32_TARGET_OS
722 #ifdef mingw32_TARGET_OS
723 ++ if static then [ "-u _PrelMain_mainIO_closure" , "-u ___init_PrelMain"] else []
725 ++ [ "-u PrelMain_mainIO_closure" , "-u __init_PrelMain"]
730 -----------------------------------------------------------------------------
731 -- Just preprocess a file, put the result in a temp. file (used by the
732 -- compilation manager during the summary phase).
734 preprocess :: FilePath -> IO FilePath
735 preprocess filename =
736 ASSERT(haskellish_file filename)
737 do init_driver_state <- readIORef v_InitDriverState
738 writeIORef v_Driver_state init_driver_state
740 pipeline <- genPipeline (StopBefore Hsc) ("preprocess") False
741 defaultHscLang filename
742 runPipeline pipeline filename False{-no linking-} False{-no -o flag-}
745 -----------------------------------------------------------------------------
746 -- Compile a single module, under the control of the compilation manager.
748 -- This is the interface between the compilation manager and the
749 -- compiler proper (hsc), where we deal with tedious details like
750 -- reading the OPTIONS pragma from the source file, and passing the
751 -- output of hsc through the C compiler.
753 -- The driver sits between 'compile' and 'hscMain', translating calls
754 -- to the former into calls to the latter, and results from the latter
755 -- into results from the former. It does things like preprocessing
756 -- the .hs file if necessary, and compiling up the .stub_c files to
757 -- generate Linkables.
759 -- NB. No old interface can also mean that the source has changed.
761 compile :: GhciMode -- distinguish batch from interactive
762 -> ModSummary -- summary, including source
763 -> Bool -- source unchanged?
764 -> Maybe ModIface -- old interface, if available
765 -> HomeSymbolTable -- for home module ModDetails
766 -> HomeIfaceTable -- for home module Ifaces
767 -> PersistentCompilerState -- persistent compiler state
771 = CompOK PersistentCompilerState -- updated PCS
772 ModDetails -- new details (HST additions)
773 ModIface -- new iface (HIT additions)
775 -- new code; Nothing => compilation was not reqd
776 -- (old code is still valid)
778 | CompErrs PersistentCompilerState -- updated PCS
781 compile ghci_mode summary source_unchanged old_iface hst hit pcs = do
782 init_dyn_flags <- readIORef v_InitDynFlags
783 writeIORef v_DynFlags init_dyn_flags
784 init_driver_state <- readIORef v_InitDriverState
785 writeIORef v_Driver_state init_driver_state
787 showPass init_dyn_flags
788 (showSDoc (text "Compiling" <+> ppr (name_of_summary summary)))
790 let verb = verbosity init_dyn_flags
791 let location = ms_location summary
792 let input_fn = unJust "compile:hs" (ml_hs_file location)
793 let input_fnpp = unJust "compile:hspp" (ml_hspp_file location)
795 when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
797 opts <- getOptionsFromSource input_fnpp
798 processArgs dynamic_flags opts []
799 dyn_flags <- readIORef v_DynFlags
801 let hsc_lang = hscLang dyn_flags
802 output_fn <- case hsc_lang of
803 HscAsm -> newTempName (phaseInputExt As)
804 HscC -> newTempName (phaseInputExt HCc)
805 HscJava -> newTempName "java" -- ToDo
806 HscInterpreted -> return (error "no output file")
809 hsc_result <- hscMain ghci_mode dyn_flags{ hscOutName = output_fn }
811 location old_iface hst hit pcs
814 HscFail pcs -> return (CompErrs pcs)
816 HscNoRecomp pcs details iface -> return (CompOK pcs details iface Nothing)
818 HscRecomp pcs details iface
819 maybe_stub_h maybe_stub_c maybe_interpreted_code -> do
821 let (basename, _) = splitFilename input_fn
822 maybe_stub_o <- dealWithStubs basename maybe_stub_h maybe_stub_c
823 let stub_unlinked = case maybe_stub_o of
825 Just stub_o -> [ DotO stub_o ]
827 (hs_unlinked, unlinked_time) <-
830 -- in interpreted mode, just return the compiled code
831 -- as our "unlinked" object.
833 case maybe_interpreted_code of
834 Just (bcos,itbl_env) -> do tm <- getClockTime
835 return ([BCOs bcos itbl_env], tm)
836 Nothing -> panic "compile: no interpreted code"
838 -- we're in batch mode: finish the compilation pipeline.
839 _other -> do pipe <- genPipeline (StopBefore Ln) "" True
841 -- runPipeline takes input_fn so it can split off
842 -- the base name and use it as the base of
843 -- the output object file.
844 let (basename, suffix) = splitFilename input_fn
845 o_file <- pipeLoop pipe output_fn False False
847 o_time <- getModificationTime o_file
848 return ([DotO o_file], o_time)
850 let linkable = LM unlinked_time (moduleName (ms_mod summary))
851 (hs_unlinked ++ stub_unlinked)
853 return (CompOK pcs details iface (Just linkable))
856 -----------------------------------------------------------------------------
857 -- stub .h and .c files (for foreign export support)
859 dealWithStubs basename maybe_stub_h maybe_stub_c
861 = do let stub_h = basename ++ "_stub.h"
862 let stub_c = basename ++ "_stub.c"
864 -- copy the .stub_h file into the current dir if necessary
867 Just tmp_stub_h -> do
868 runSomething "Copy stub .h file"
869 ("cp " ++ tmp_stub_h ++ ' ':stub_h)
871 -- #include <..._stub.h> in .hc file
872 addCmdlineHCInclude tmp_stub_h -- hack
874 -- copy the .stub_c file into the current dir, and compile it, if necessary
876 Nothing -> return Nothing
877 Just tmp_stub_c -> do -- copy the _stub.c file into the current dir
878 runSomething "Copy stub .c file"
880 "rm -f", stub_c, "&&",
881 "echo \'#include \"Stg.h\"\n#include \""++stub_h++"\"\' >"++stub_c, " &&",
882 "cat", tmp_stub_c, ">> ", stub_c
885 -- compile the _stub.c file w/ gcc
886 pipeline <- genPipeline (StopBefore Ln) "" True
887 defaultHscLang stub_c
888 stub_o <- runPipeline pipeline stub_c False{-no linking-}
889 False{-no -o option-}