1 -----------------------------------------------------------------------------
2 -- $Id: DriverPipeline.hs,v 1.46 2001/01/03 14:28:26 simonmar 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, pipeLoop,
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 = startPhase suffix
152 -- special case for mkdependHS: .hspp files go through MkDependHS
153 start_phase | todo == DoMkDependHS && start == Hsc = MkDependHS
156 haskellish = haskellish_suffix suffix
157 cish = cish_suffix suffix
159 -- for a .hc file we need to force lang to HscC
160 real_lang | start_phase == HCc = HscC
164 ----------- ----- ---- --- -- -- - - -
166 | todo == DoMkDependHS = [ Unlit, Cpp, MkDependHS ]
170 HscC | split && mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle,
171 SplitMangle, SplitAs ]
172 | mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle, As ]
174 | otherwise -> [ Unlit, Cpp, Hsc, HCc, As ]
176 HscAsm | split -> [ Unlit, Cpp, Hsc, SplitMangle, SplitAs ]
177 | otherwise -> [ Unlit, Cpp, Hsc, As ]
179 HscJava | split -> not_valid
180 | otherwise -> error "not implemented: compiling via Java"
184 | otherwise = [ ] -- just pass this file through to the linker
186 -- ToDo: this is somewhat cryptic
187 not_valid = throwDyn (OtherError ("invalid option combination"))
188 ----------- ----- ---- --- -- -- - - -
190 -- this shouldn't happen.
191 if start_phase /= Ln && start_phase `notElem` pipeline
192 then throwDyn (OtherError ("can't find starting phase for "
197 ----------- ----- ---- --- -- -- - - -
198 myPhaseInputExt Ln = case osuf of Nothing -> phaseInputExt Ln
200 myPhaseInputExt other = phaseInputExt other
203 :: [Phase] -- raw pipeline
204 -> Phase -- phase to stop before
205 -> [(Phase, IntermediateFileType, String{-file extension-})]
206 annotatePipeline [] _ = []
207 annotatePipeline (Ln:_) _ = []
208 annotatePipeline (phase:next_phase:ps) stop =
209 (phase, keep_this_output, myPhaseInputExt next_phase)
210 : annotatePipeline (next_phase:ps) stop
214 = if persistent_output then Persistent else Temporary
218 Mangle | keep_raw_s -> Persistent
219 As | keep_s -> Persistent
220 HCc | keep_hc -> Persistent
223 -- add information about output files to the pipeline
224 -- the suffix on an output file is determined by the next phase
225 -- in the pipeline, so we add linking to the end of the pipeline
226 -- to force the output from the final phase to be a .o file.
227 stop_phase = case todo of
228 StopBefore As | split -> SplitAs
229 StopBefore phase -> phase
232 annotated_pipeline = annotatePipeline (pipeline ++ [ Ln ]) stop_phase
234 phase_ne p (p1,_,_) = (p1 /= p)
235 ----------- ----- ---- --- -- -- - - -
237 -- if we can't find the phase we're supposed to stop before,
238 -- something has gone wrong. This test carefully avoids the
239 -- case where we aren't supposed to do any compilation, because the file
240 -- is already in linkable form (for example).
241 if start_phase `elem` pipeline &&
242 (stop_phase /= Ln && stop_phase `notElem` pipeline)
243 then throwDyn (OtherError
244 ("flag " ++ stop_flag
245 ++ " is incompatible with source file `" ++ filename ++ "'"))
249 takeWhile (phase_ne stop_phase ) $
250 dropWhile (phase_ne start_phase) $
256 :: [ (Phase, IntermediateFileType, String) ] -- phases to run
257 -> String -- input file
258 -> Bool -- doing linking afterward?
259 -> Bool -- take into account -o when generating output?
260 -> IO String -- return final filename
262 runPipeline pipeline input_fn do_linking use_ofile
263 = pipeLoop pipeline input_fn do_linking use_ofile basename suffix
264 where (basename, suffix) = splitFilename input_fn
266 pipeLoop [] input_fn _ _ _ _ = return input_fn
267 pipeLoop ((phase, keep, o_suffix):phases)
268 input_fn do_linking use_ofile orig_basename orig_suffix
271 output_fn <- outputFileName (null phases) keep o_suffix
273 carry_on <- run_phase phase orig_basename orig_suffix input_fn output_fn
274 -- sometimes we bail out early, eg. when the compiler's recompilation
275 -- checker has determined that recompilation isn't necessary.
277 then do let (_,keep,final_suffix) = last phases
278 ofile <- outputFileName True keep final_suffix
280 else do -- carry on ...
282 pipeLoop phases output_fn do_linking use_ofile orig_basename orig_suffix
285 outputFileName last_phase keep suffix
286 = do o_file <- readIORef v_Output_file
287 if last_phase && not do_linking && use_ofile && isJust o_file
290 Nothing -> error "outputFileName"
291 else if keep == Persistent
292 then odir_ify (orig_basename ++ '.':suffix)
293 else newTempName suffix
295 -------------------------------------------------------------------------------
298 run_phase Unlit _basename _suff input_fn output_fn
299 = do unlit <- readIORef v_Pgm_L
300 unlit_flags <- getOpts opt_L
301 runSomething "Literate pre-processor"
302 ("echo '# 1 \"" ++input_fn++"\"' > "++output_fn++" && "
303 ++ unlit ++ ' ':input_fn ++ " - >> " ++ output_fn)
306 -------------------------------------------------------------------------------
309 run_phase Cpp basename suff input_fn output_fn
310 = do src_opts <- getOptionsFromSource input_fn
311 unhandled_flags <- processArgs dynamic_flags src_opts []
313 when (not (null unhandled_flags))
314 (throwDyn (OtherError (
315 basename ++ "." ++ suff
316 ++ ": static flags are not allowed in {-# OPTIONS #-} pragmas:\n\t"
317 ++ unwords unhandled_flags)) (ExitFailure 1))
319 do_cpp <- readState cpp_flag
322 cpp <- readIORef v_Pgm_P
323 hscpp_opts <- getOpts opt_P
324 hs_src_cpp_opts <- readIORef v_Hs_source_cpp_opts
326 cmdline_include_paths <- readIORef v_Include_paths
327 pkg_include_dirs <- getPackageIncludePath
328 let include_paths = map (\p -> "-I"++p) (cmdline_include_paths
333 runSomething "C pre-processor"
335 (["echo '{-# LINE 1 \"" ++ input_fn ++ "\" -}'", ">", output_fn, "&&",
340 ++ [ "-x", "c", input_fn, ">>", output_fn ]
343 runSomething "Ineffective C pre-processor"
344 ("echo '{-# LINE 1 \"" ++ input_fn ++ "\" -}' > "
345 ++ output_fn ++ " && cat " ++ input_fn
346 ++ " >> " ++ output_fn)
349 -----------------------------------------------------------------------------
352 run_phase MkDependHS basename suff input_fn _output_fn = do
353 src <- readFile input_fn
354 let (import_sources, import_normals, module_name) = getImports src
356 deps_sources <- mapM (findDependency True basename) import_sources
357 deps_normals <- mapM (findDependency False basename) import_normals
358 let deps = deps_sources ++ deps_normals
360 osuf_opt <- readIORef v_Object_suf
361 let osuf = case osuf_opt of
362 Nothing -> phaseInputExt Ln
365 extra_suffixes <- readIORef v_Dep_suffixes
366 let suffixes = osuf : map (++ ('_':osuf)) extra_suffixes
367 ofiles = map (\suf -> basename ++ '.':suf) suffixes
369 objs <- mapM odir_ify ofiles
371 hdl <- readIORef v_Dep_tmp_hdl
373 -- std dependency of the object(s) on the source file
374 hPutStrLn hdl (unwords objs ++ " : " ++ basename ++ '.':suff)
376 let genDep (dep, False {- not an hi file -}) =
377 hPutStrLn hdl (unwords objs ++ " : " ++ dep)
378 genDep (dep, True {- is an hi file -}) = do
379 hisuf <- readIORef v_Hi_suf
380 let dep_base = remove_suffix '.' dep
381 deps = (dep_base ++ hisuf)
382 : map (\suf -> dep_base ++ suf ++ '_':hisuf) extra_suffixes
383 -- length objs should be == length deps
384 sequence_ (zipWith (\o d -> hPutStrLn hdl (o ++ " : " ++ d)) objs deps)
386 mapM genDep [ d | Just d <- deps ]
390 -- add the lines to dep_makefile:
394 -- if the dependency is on something other than a .hi file:
395 -- this.o this.p_o ... : dep
397 -- if the import is {-# SOURCE #-}
398 -- this.o this.p_o ... : dep.hi-boot[-$vers]
401 -- this.o ... : dep.hi
402 -- this.p_o ... : dep.p_hi
405 -- (where .o is $osuf, and the other suffixes come from
406 -- the cmdline -s options).
408 -----------------------------------------------------------------------------
411 -- Compilation of a single module, in "legacy" mode (_not_ under
412 -- the direction of the compilation manager).
413 run_phase Hsc basename suff input_fn output_fn
416 -- we add the current directory (i.e. the directory in which
417 -- the .hs files resides) to the import path, since this is
418 -- what gcc does, and it's probably what you want.
419 let current_dir = getdir basename
421 paths <- readIORef v_Include_paths
422 writeIORef v_Include_paths (current_dir : paths)
424 -- figure out where to put the .hi file
425 ohi <- readIORef v_Output_hi
426 hisuf <- readIORef v_Hi_suf
427 let hifile = case ohi of
428 Nothing -> basename ++ '.':hisuf
431 -- figure out if the source has changed, for recompilation avoidance.
432 -- only do this if we're eventually going to generate a .o file.
433 -- (ToDo: do when generating .hc files too?)
435 -- Setting source_unchanged to True means that M.o seems
436 -- to be up to date wrt M.hs; so no need to recompile unless imports have
437 -- changed (which the compiler itself figures out).
438 -- Setting source_unchanged to False tells the compiler that M.o is out of
439 -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless.
440 do_recomp <- readIORef v_Recomp
441 todo <- readIORef v_GhcMode
442 o_file' <- odir_ify (basename ++ '.':phaseInputExt Ln)
443 o_file <- osuf_ify o_file'
445 if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln ))
447 else do t1 <- getModificationTime (basename ++ '.':suff)
448 o_file_exists <- doesFileExist o_file
450 then return False -- Need to recompile
451 else do t2 <- getModificationTime o_file
456 -- build a ModuleLocation to pass to hscMain.
457 let location = ModuleLocation {
458 ml_hs_file = Nothing,
459 ml_hspp_file = Just input_fn,
460 ml_hi_file = Just hifile,
461 ml_obj_file = Just o_file
465 dyn_flags <- readIORef v_DynFlags
468 pcs <- initPersistentCompilerState
469 result <- hscMain OneShot
470 dyn_flags{ hscOutName = output_fn }
474 emptyModuleEnv -- HomeSymbolTable
475 emptyModuleEnv -- HomeIfaceTable
480 HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1));
482 HscNoRecomp pcs details iface ->
484 runSomething "Touching object file" ("touch " ++ o_file);
488 HscRecomp pcs details iface maybe_stub_h maybe_stub_c
489 _maybe_interpreted_code -> do
492 maybe_stub_o <- dealWithStubs basename maybe_stub_h maybe_stub_c
495 Just stub_o -> add v_Ld_inputs stub_o
500 -----------------------------------------------------------------------------
503 -- we don't support preprocessing .c files (with -E) now. Doing so introduces
504 -- way too many hacks, and I can't say I've ever used it anyway.
506 run_phase cc_phase _basename _suff input_fn output_fn
507 | cc_phase == Cc || cc_phase == HCc
508 = do cc <- readIORef v_Pgm_c
509 cc_opts <- (getOpts opt_c)
510 cmdline_include_dirs <- readIORef v_Include_paths
512 let hcc = cc_phase == HCc
514 -- add package include paths even if we're just compiling
515 -- .c files; this is the Value Add(TM) that using
516 -- ghc instead of gcc gives you :)
517 pkg_include_dirs <- getPackageIncludePath
518 let include_paths = map (\p -> "-I"++p) (cmdline_include_dirs
521 c_includes <- getPackageCIncludes
522 cmdline_includes <- readState cmdline_hc_includes -- -#include options
524 let cc_injects | hcc = unlines (map mk_include
525 (c_includes ++ reverse cmdline_includes))
529 '"':_{-"-} -> "#include "++h_file
530 '<':_ -> "#include "++h_file
531 _ -> "#include \""++h_file++"\""
533 cc_help <- newTempName "c"
534 h <- openFile cc_help WriteMode
536 hPutStrLn h ("#include \"" ++ input_fn ++ "\"\n")
539 ccout <- newTempName "ccout"
541 mangle <- readIORef v_Do_asm_mangling
542 (md_c_flags, md_regd_c_flags) <- machdepCCOpts
546 o2 <- readIORef v_minus_o2_for_C
547 let opt_flag | o2 = "-O2"
550 pkg_extra_cc_opts <- getPackageExtraCcOpts
552 split_objs <- readIORef v_Split_object_files
553 let split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
556 excessPrecision <- readIORef v_Excess_precision
558 runSomething "C Compiler"
559 (unwords ([ cc, "-x", "c", cc_help, "-o", output_fn ]
561 ++ (if cc_phase == HCc && mangle
564 ++ [ verb, "-S", "-Wimplicit", opt_flag ]
565 ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
568 ++ (if excessPrecision then [] else [ "-ffloat-store" ])
575 -- ToDo: postprocess the output from gcc
577 -----------------------------------------------------------------------------
580 run_phase Mangle _basename _suff input_fn output_fn
581 = do mangler <- readIORef v_Pgm_m
582 mangler_opts <- getOpts opt_m
584 if (prefixMatch "i386" cTARGETPLATFORM)
585 then do n_regs <- readState stolen_x86_regs
586 return [ show n_regs ]
588 runSomething "Assembly Mangler"
591 ++ [ input_fn, output_fn ]
596 -----------------------------------------------------------------------------
599 run_phase SplitMangle _basename _suff input_fn _output_fn
600 = do splitter <- readIORef v_Pgm_s
602 -- this is the prefix used for the split .s files
603 tmp_pfx <- readIORef v_TmpDir
605 let split_s_prefix = tmp_pfx ++ "/ghc" ++ show x
606 writeIORef v_Split_prefix split_s_prefix
607 addFilesToClean [split_s_prefix ++ "__*"] -- d:-)
609 -- allocate a tmp file to put the no. of split .s files in (sigh)
610 n_files <- newTempName "n_files"
612 runSomething "Split Assembly File"
619 -- save the number of split files for future references
620 s <- readFile n_files
621 let n = read s :: Int
622 writeIORef v_N_split_files n
625 -----------------------------------------------------------------------------
628 run_phase As _basename _suff input_fn output_fn
629 = do as <- readIORef v_Pgm_a
630 as_opts <- getOpts opt_a
632 cmdline_include_paths <- readIORef v_Include_paths
633 let cmdline_include_flags = map (\p -> "-I"++p) cmdline_include_paths
634 runSomething "Assembler"
635 (unwords (as : as_opts
636 ++ cmdline_include_flags
637 ++ [ "-c", input_fn, "-o", output_fn ]
641 run_phase SplitAs basename _suff _input_fn _output_fn
642 = do as <- readIORef v_Pgm_a
643 as_opts <- getOpts opt_a
645 split_s_prefix <- readIORef v_Split_prefix
646 n <- readIORef v_N_split_files
648 odir <- readIORef v_Output_dir
649 let real_odir = case odir of
653 let assemble_file n = do
654 let input_s = split_s_prefix ++ "__" ++ show n ++ ".s"
655 let output_o = newdir real_odir
656 (basename ++ "__" ++ show n ++ ".o")
657 real_o <- osuf_ify output_o
658 runSomething "Assembler"
659 (unwords (as : as_opts
660 ++ [ "-c", "-o", real_o, input_s ]
663 mapM_ assemble_file [1..n]
666 -----------------------------------------------------------------------------
669 doLink :: [String] -> IO ()
671 ln <- readIORef v_Pgm_l
673 static <- readIORef v_Static
674 let imp = if static then "" else "_imp"
675 no_hs_main <- readIORef v_NoHsMain
677 o_file <- readIORef v_Output_file
678 let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
680 pkg_lib_paths <- getPackageLibraryPath
681 let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
683 lib_paths <- readIORef v_Library_paths
684 let lib_path_opts = map ("-L"++) lib_paths
686 pkg_libs <- getPackageLibraries
687 let pkg_lib_opts = map (\lib -> "-l" ++ lib ++ imp) pkg_libs
689 libs <- readIORef v_Cmdline_libraries
690 let lib_opts = map ("-l"++) (reverse libs)
691 -- reverse because they're added in reverse order from the cmd line
693 pkg_extra_ld_opts <- getPackageExtraLdOpts
695 -- probably _stub.o files
696 extra_ld_inputs <- readIORef v_Ld_inputs
698 -- opts from -optl-<blah>
699 extra_ld_opts <- getStaticOpts v_Opt_l
701 rts_pkg <- getPackageDetails ["rts"]
702 std_pkg <- getPackageDetails ["std"]
703 #ifdef mingw32_TARGET_OS
704 let extra_os = if static || no_hs_main
706 -- else [ head (lib_paths (head rts_pkg)) ++ "/Main.dll_o",
707 -- head (lib_paths (head std_pkg)) ++ "/PrelMain.dll_o" ]
710 (md_c_flags, _) <- machdepCCOpts
711 runSomething "Linker"
713 ([ ln, verb, "-o", output_fn ]
716 #ifdef mingw32_TARGET_OS
726 #ifdef mingw32_TARGET_OS
727 ++ if static then [ "-u _PrelMain_mainIO_closure" , "-u ___init_PrelMain"] else []
729 ++ [ "-u PrelMain_mainIO_closure" , "-u __init_PrelMain"]
734 -----------------------------------------------------------------------------
735 -- Just preprocess a file, put the result in a temp. file (used by the
736 -- compilation manager during the summary phase).
738 preprocess :: FilePath -> IO FilePath
739 preprocess filename =
740 ASSERT(haskellish_file filename)
741 do init_driver_state <- readIORef v_InitDriverState
742 writeIORef v_Driver_state init_driver_state
744 pipeline <- genPipeline (StopBefore Hsc) ("preprocess") False
745 defaultHscLang filename
746 runPipeline pipeline filename False{-no linking-} False{-no -o flag-}
749 -----------------------------------------------------------------------------
750 -- Compile a single module, under the control of the compilation manager.
752 -- This is the interface between the compilation manager and the
753 -- compiler proper (hsc), where we deal with tedious details like
754 -- reading the OPTIONS pragma from the source file, and passing the
755 -- output of hsc through the C compiler.
757 -- The driver sits between 'compile' and 'hscMain', translating calls
758 -- to the former into calls to the latter, and results from the latter
759 -- into results from the former. It does things like preprocessing
760 -- the .hs file if necessary, and compiling up the .stub_c files to
761 -- generate Linkables.
763 -- NB. No old interface can also mean that the source has changed.
765 compile :: GhciMode -- distinguish batch from interactive
766 -> ModSummary -- summary, including source
767 -> Bool -- source unchanged?
768 -> Maybe ModIface -- old interface, if available
769 -> HomeSymbolTable -- for home module ModDetails
770 -> HomeIfaceTable -- for home module Ifaces
771 -> PersistentCompilerState -- persistent compiler state
775 = CompOK PersistentCompilerState -- updated PCS
776 ModDetails -- new details (HST additions)
777 ModIface -- new iface (HIT additions)
779 -- new code; Nothing => compilation was not reqd
780 -- (old code is still valid)
782 | CompErrs PersistentCompilerState -- updated PCS
785 compile ghci_mode summary source_unchanged old_iface hst hit pcs = do
786 init_dyn_flags <- readIORef v_InitDynFlags
787 writeIORef v_DynFlags init_dyn_flags
788 init_driver_state <- readIORef v_InitDriverState
789 writeIORef v_Driver_state init_driver_state
791 showPass init_dyn_flags
792 (showSDoc (text "Compiling" <+> ppr (name_of_summary summary)))
794 let verb = verbosity init_dyn_flags
795 let location = ms_location summary
796 let input_fn = unJust "compile:hs" (ml_hs_file location)
797 let input_fnpp = unJust "compile:hspp" (ml_hspp_file location)
799 when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
801 opts <- getOptionsFromSource input_fnpp
802 processArgs dynamic_flags opts []
803 dyn_flags <- readIORef v_DynFlags
805 let hsc_lang = hscLang dyn_flags
806 output_fn <- case hsc_lang of
807 HscAsm -> newTempName (phaseInputExt As)
808 HscC -> newTempName (phaseInputExt HCc)
809 HscJava -> newTempName "java" -- ToDo
810 HscInterpreted -> return (error "no output file")
813 hsc_result <- hscMain ghci_mode dyn_flags{ hscOutName = output_fn }
815 location old_iface hst hit pcs
818 HscFail pcs -> return (CompErrs pcs)
820 HscNoRecomp pcs details iface -> return (CompOK pcs details iface Nothing)
822 HscRecomp pcs details iface
823 maybe_stub_h maybe_stub_c maybe_interpreted_code -> do
825 let (basename, _) = splitFilename input_fn
826 maybe_stub_o <- dealWithStubs basename maybe_stub_h maybe_stub_c
827 let stub_unlinked = case maybe_stub_o of
829 Just stub_o -> [ DotO stub_o ]
831 (hs_unlinked, unlinked_time) <-
834 -- in interpreted mode, just return the compiled code
835 -- as our "unlinked" object.
837 case maybe_interpreted_code of
838 Just (bcos,itbl_env) -> do tm <- getClockTime
839 return ([BCOs bcos itbl_env], tm)
840 Nothing -> panic "compile: no interpreted code"
842 -- we're in batch mode: finish the compilation pipeline.
843 _other -> do pipe <- genPipeline (StopBefore Ln) "" True
845 -- runPipeline takes input_fn so it can split off
846 -- the base name and use it as the base of
847 -- the output object file.
848 let (basename, suffix) = splitFilename input_fn
849 o_file <- pipeLoop pipe output_fn False False
851 o_time <- getModificationTime o_file
852 return ([DotO o_file], o_time)
854 let linkable = LM unlinked_time (moduleName (ms_mod summary))
855 (hs_unlinked ++ stub_unlinked)
857 return (CompOK pcs details iface (Just linkable))
860 -----------------------------------------------------------------------------
861 -- stub .h and .c files (for foreign export support)
863 dealWithStubs basename maybe_stub_h maybe_stub_c
865 = do let stub_h = basename ++ "_stub.h"
866 let stub_c = basename ++ "_stub.c"
868 -- copy the .stub_h file into the current dir if necessary
871 Just tmp_stub_h -> do
872 runSomething "Copy stub .h file"
873 ("cp " ++ tmp_stub_h ++ ' ':stub_h)
875 -- #include <..._stub.h> in .hc file
876 addCmdlineHCInclude tmp_stub_h -- hack
878 -- copy the .stub_c file into the current dir, and compile it, if necessary
880 Nothing -> return Nothing
881 Just tmp_stub_c -> do -- copy the _stub.c file into the current dir
882 runSomething "Copy stub .c file"
884 "rm -f", stub_c, "&&",
885 "echo \'#include \"Stg.h\"\n#include \""++stub_h++"\"\' >"++stub_c, " &&",
886 "cat", tmp_stub_c, ">> ", stub_c
889 -- compile the _stub.c file w/ gcc
890 pipeline <- genPipeline (StopBefore Ln) "" True
891 defaultHscLang stub_c
892 stub_o <- runPipeline pipeline stub_c False{-no linking-}
893 False{-no -o option-}