X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FDriverPipeline.hs;fp=ghc%2Fcompiler%2Fmain%2FDriverPipeline.hs;h=0000000000000000000000000000000000000000;hb=0065d5ab628975892cea1ec7303f968c3338cbe1;hp=e20bc569409ea3000ffa5a66b03b9e0091e28d10;hpb=28a464a75e14cece5db40f2765a29348273ff2d2;p=ghc-hetmet.git diff --git a/ghc/compiler/main/DriverPipeline.hs b/ghc/compiler/main/DriverPipeline.hs deleted file mode 100644 index e20bc56..0000000 --- a/ghc/compiler/main/DriverPipeline.hs +++ /dev/null @@ -1,1405 +0,0 @@ ------------------------------------------------------------------------------ --- --- GHC Driver --- --- (c) The University of Glasgow 2005 --- ------------------------------------------------------------------------------ - -module DriverPipeline ( - -- Run a series of compilation steps in a pipeline, for a - -- collection of source files. - oneShot, compileFile, - - -- Interfaces for the batch-mode driver - staticLink, - - -- Interfaces for the compilation manager (interpreted/batch-mode) - preprocess, - compile, CompResult(..), - link, - - -- DLL building - doMkDLL, - - ) where - -#include "HsVersions.h" - -import Packages -import HeaderInfo -import DriverPhases -import SysTools ( newTempName, addFilesToClean, getSysMan, copy ) -import qualified SysTools -import HscMain -import Finder -import HscTypes -import Outputable -import Module -import ErrUtils -import DynFlags -import StaticFlags ( v_Ld_inputs, opt_Static, WayName(..) ) -import Config -import Panic -import Util -import StringBuffer ( hGetStringBuffer ) -import BasicTypes ( SuccessFlag(..) ) -import Maybes ( expectJust ) -import ParserCoreUtils ( getCoreModuleName ) -import SrcLoc ( unLoc ) -import SrcLoc ( Located(..) ) - -import EXCEPTION -import DATA_IOREF ( readIORef, writeIORef, IORef ) -import GLAEXTS ( Int(..) ) - -import Directory -import System -import IO -import Monad -import Data.List ( isSuffixOf ) -import Maybe - - --- --------------------------------------------------------------------------- --- Pre-process - --- Just preprocess a file, put the result in a temp. file (used by the --- compilation manager during the summary phase). --- --- We return the augmented DynFlags, because they contain the result --- of slurping in the OPTIONS pragmas - -preprocess :: DynFlags -> (FilePath, Maybe Phase) -> IO (DynFlags, FilePath) -preprocess dflags (filename, mb_phase) = - ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename) - runPipeline anyHsc dflags (filename, mb_phase) Temporary Nothing{-no ModLocation-} - --- --------------------------------------------------------------------------- --- Compile - --- Compile a single module, under the control of the compilation manager. --- --- This is the interface between the compilation manager and the --- compiler proper (hsc), where we deal with tedious details like --- reading the OPTIONS pragma from the source file, and passing the --- output of hsc through the C compiler. - --- NB. No old interface can also mean that the source has changed. - -compile :: HscEnv - -> ModSummary - -> Maybe Linkable -- Just linkable <=> source unchanged - -> Maybe ModIface -- Old interface, if available - -> Int -> Int - -> IO CompResult - -data CompResult - = CompOK ModDetails -- New details - ModIface -- New iface - (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable - - | CompErrs - - -compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do - - let dflags0 = ms_hspp_opts mod_summary - this_mod = ms_mod mod_summary - src_flavour = ms_hsc_src mod_summary - - have_object - | Just l <- maybe_old_linkable, isObjectLinkable l = True - | otherwise = False - - -- FIXME: We need to know whether or not we're recompiling the file. Move this to HscMain? - --showPass dflags0 ("Compiling " ++ showModMsg have_object mod_summary) - - let location = ms_location mod_summary - let input_fn = expectJust "compile:hs" (ml_hs_file location) - let input_fnpp = ms_hspp_file mod_summary - - debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp) - - let (basename, _) = splitFilename input_fn - - -- We add the directory in which the .hs files resides) to the import path. - -- This is needed when we try to compile the .hc file later, if it - -- imports a _stub.h file that we created here. - let current_dir = directoryOf basename - old_paths = includePaths dflags0 - dflags = dflags0 { includePaths = current_dir : old_paths } - - -- Figure out what lang we're generating - let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags) - -- ... and what the next phase should be - let next_phase = hscNextPhase dflags src_flavour hsc_lang - -- ... and what file to generate the output into - output_fn <- getOutputFilename dflags next_phase - Temporary basename next_phase (Just location) - - let dflags' = dflags { hscTarget = hsc_lang, - hscOutName = output_fn, - extCoreName = basename ++ ".hcr" } - - -- -no-recomp should also work with --make - let do_recomp = dopt Opt_RecompChecking dflags - source_unchanged = isJust maybe_old_linkable && do_recomp - hsc_env' = hsc_env { hsc_dflags = dflags' } - object_filename = ml_obj_file location - - let getStubLinkable False = return [] - getStubLinkable True - = do stub_o <- compileStub dflags' this_mod location - return [ DotO stub_o ] - - handleBatch (HscNoRecomp, iface, details) - = ASSERT (isJust maybe_old_linkable) - return (CompOK details iface maybe_old_linkable) - handleBatch (HscRecomp hasStub, iface, details) - | isHsBoot src_flavour - = return (CompOK details iface Nothing) - | otherwise - = do stub_unlinked <- getStubLinkable hasStub - (hs_unlinked, unlinked_time) <- - case hsc_lang of - HscNothing - -> return ([], ms_hs_date mod_summary) - -- We're in --make mode: finish the compilation pipeline. - _other - -> do runPipeline StopLn dflags (output_fn,Nothing) Persistent - (Just location) - -- The object filename comes from the ModLocation - o_time <- getModificationTime object_filename - return ([DotO object_filename], o_time) - let linkable = LM unlinked_time this_mod - (hs_unlinked ++ stub_unlinked) - return (CompOK details iface (Just linkable)) - - handleInterpreted (InteractiveNoRecomp, iface, details) - = ASSERT (isJust maybe_old_linkable) - return (CompOK details iface maybe_old_linkable) - handleInterpreted (InteractiveRecomp hasStub comp_bc, iface, details) - = do stub_unlinked <- getStubLinkable hasStub - let hs_unlinked = [BCOs comp_bc] - unlinked_time = ms_hs_date mod_summary - -- Why do we use the timestamp of the source file here, - -- rather than the current time? This works better in - -- the case where the local clock is out of sync - -- with the filesystem's clock. It's just as accurate: - -- if the source is modified, then the linkable will - -- be out of date. - let linkable = LM unlinked_time this_mod - (hs_unlinked ++ stub_unlinked) - return (CompOK details iface (Just linkable)) - - let runCompiler compiler handle - = do mbResult <- compiler hsc_env' mod_summary - source_unchanged old_iface - (Just (mod_index, nmods)) - case mbResult of - Nothing -> return CompErrs - Just result -> handle result - -- run the compiler - case hsc_lang of - HscInterpreted | not (isHsBoot src_flavour) -- We can't compile boot files to - -- bytecode so don't even try. - -> runCompiler hscCompileInteractive handleInterpreted - HscNothing - -> runCompiler hscCompileNothing handleBatch - _other - -> runCompiler hscCompileBatch handleBatch - ------------------------------------------------------------------------------ --- stub .h and .c files (for foreign export support) - --- The _stub.c file is derived from the haskell source file, possibly taking --- into account the -stubdir option. --- --- Consequently, we derive the _stub.o filename from the haskell object --- filename. --- --- This isn't necessarily the same as the object filename we --- would get if we just compiled the _stub.c file using the pipeline. --- For example: --- --- ghc src/A.hs -odir obj --- --- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with --- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want --- obj/A_stub.o. - -compileStub :: DynFlags -> Module -> ModLocation -> IO FilePath -compileStub dflags mod location = do - let (o_base, o_ext) = splitFilename (ml_obj_file location) - stub_o = o_base ++ "_stub" `joinFileExt` o_ext - - -- compile the _stub.c file w/ gcc - let (stub_c,_) = mkStubPaths dflags mod location - runPipeline StopLn dflags (stub_c,Nothing) - (SpecificFile stub_o) Nothing{-no ModLocation-} - - return stub_o - - --- --------------------------------------------------------------------------- --- Link - -link :: GhcMode -- interactive or batch - -> DynFlags -- dynamic flags - -> Bool -- attempt linking in batch mode? - -> HomePackageTable -- what to link - -> IO SuccessFlag - --- For the moment, in the batch linker, we don't bother to tell doLink --- which packages to link -- it just tries all that are available. --- batch_attempt_linking should only be *looked at* in batch mode. It --- should only be True if the upsweep was successful and someone --- exports main, i.e., we have good reason to believe that linking --- will succeed. - -#ifdef GHCI -link Interactive dflags batch_attempt_linking hpt - = do -- Not Linking...(demand linker will do the job) - return Succeeded -#endif - -link JustTypecheck dflags batch_attempt_linking hpt - = return Succeeded - -link BatchCompile dflags batch_attempt_linking hpt - | batch_attempt_linking - = do - let - home_mod_infos = moduleEnvElts hpt - - -- the packages we depend on - pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos - - -- the linkables to link - linkables = map (expectJust "link".hm_linkable) home_mod_infos - - debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables)) - - -- check for the -no-link flag - if isNoLink (ghcLink dflags) - then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).") - return Succeeded - else do - - let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us) - obj_files = concatMap getOfiles linkables - - exe_file = exeFileName dflags - - -- if the modification time on the executable is later than the - -- modification times on all of the objects, then omit linking - -- (unless the -no-recomp flag was given). - e_exe_time <- IO.try $ getModificationTime exe_file - let linking_needed - | Left _ <- e_exe_time = True - | Right t <- e_exe_time = - any (t <) (map linkableTime linkables) - - if dopt Opt_RecompChecking dflags && not linking_needed - then do debugTraceMsg dflags 1 (text exe_file <+> ptext SLIT("is up to date, linking not required.")) - return Succeeded - else do - - debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file - <+> text "...") - - -- Don't showPass in Batch mode; doLink will do that for us. - let link = case ghcLink dflags of - MkDLL -> doMkDLL - StaticLink -> staticLink - link dflags obj_files pkg_deps - - debugTraceMsg dflags 3 (text "link: done") - - -- staticLink only returns if it succeeds - return Succeeded - - | otherwise - = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$ - text " Main.main not exported; not linking.") - return Succeeded - - --- ----------------------------------------------------------------------------- --- Compile files in one-shot mode. - -oneShot :: DynFlags -> Phase -> [(String, Maybe Phase)] -> IO () -oneShot dflags stop_phase srcs = do - o_files <- mapM (compileFile dflags stop_phase) srcs - doLink dflags stop_phase o_files - -compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath -compileFile dflags stop_phase (src, mb_phase) = do - exists <- doesFileExist src - when (not exists) $ - throwDyn (CmdLineError ("does not exist: " ++ src)) - - let - split = dopt Opt_SplitObjs dflags - mb_o_file = outputFile dflags - ghc_link = ghcLink dflags -- Set by -c or -no-link - - -- When linking, the -o argument refers to the linker's output. - -- otherwise, we use it as the name for the pipeline's output. - output - | StopLn <- stop_phase, not (isNoLink ghc_link) = Persistent - -- -o foo applies to linker - | Just o_file <- mb_o_file = SpecificFile o_file - -- -o foo applies to the file we are compiling now - | otherwise = Persistent - - stop_phase' = case stop_phase of - As | split -> SplitAs - other -> stop_phase - - (_, out_file) <- runPipeline stop_phase' dflags - (src, mb_phase) output Nothing{-no ModLocation-} - return out_file - - -doLink :: DynFlags -> Phase -> [FilePath] -> IO () -doLink dflags stop_phase o_files - | not (isStopLn stop_phase) - = return () -- We stopped before the linking phase - - | otherwise - = case ghcLink dflags of - NoLink -> return () - StaticLink -> staticLink dflags o_files link_pkgs - MkDLL -> doMkDLL dflags o_files link_pkgs - where - -- Always link in the haskell98 package for static linking. Other - -- packages have to be specified via the -package flag. - link_pkgs - | ExtPackage h98_id <- haskell98PackageId (pkgState dflags) = [h98_id] - | otherwise = [] - - --- --------------------------------------------------------------------------- --- Run a compilation pipeline, consisting of multiple phases. - --- This is the interface to the compilation pipeline, which runs --- a series of compilation steps on a single source file, specifying --- at which stage to stop. - --- The DynFlags can be modified by phases in the pipeline (eg. by --- GHC_OPTIONS pragmas), and the changes affect later phases in the --- pipeline. - -data PipelineOutput - = Temporary - -- output should be to a temporary file: we're going to - -- run more compilation steps on this output later - | Persistent - -- we want a persistent file, i.e. a file in the current directory - -- derived from the input filename, but with the appropriate extension. - -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o. - | SpecificFile FilePath - -- the output must go into the specified file. - -runPipeline - :: Phase -- When to stop - -> DynFlags -- Dynamic flags - -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix) - -> PipelineOutput -- Output filename - -> Maybe ModLocation -- A ModLocation, if this is a Haskell module - -> IO (DynFlags, FilePath) -- (final flags, output filename) - -runPipeline stop_phase dflags (input_fn, mb_phase) output maybe_loc - = do - let (basename, suffix) = splitFilename input_fn - - -- If we were given a -x flag, then use that phase to start from - start_phase - | Just x_phase <- mb_phase = x_phase - | otherwise = startPhase suffix - - -- We want to catch cases of "you can't get there from here" before - -- we start the pipeline, because otherwise it will just run off the - -- end. - -- - -- There is a partial ordering on phases, where A < B iff A occurs - -- before B in a normal compilation pipeline. - - when (not (start_phase `happensBefore` stop_phase)) $ - throwDyn (UsageError - ("cannot compile this file to desired target: " - ++ input_fn)) - - -- this is a function which will be used to calculate output file names - -- as we go along (we partially apply it to some of its inputs here) - let get_output_fn = getOutputFilename dflags stop_phase output basename - - -- Execute the pipeline... - (dflags', output_fn, maybe_loc) <- - pipeLoop dflags start_phase stop_phase input_fn - basename suffix get_output_fn maybe_loc - - -- Sometimes, a compilation phase doesn't actually generate any output - -- (eg. the CPP phase when -fcpp is not turned on). If we end on this - -- stage, but we wanted to keep the output, then we have to explicitly - -- copy the file. - case output of - Temporary -> - return (dflags', output_fn) - _other -> - do final_fn <- get_output_fn stop_phase maybe_loc - when (final_fn /= output_fn) $ - copy dflags ("Copying `" ++ output_fn ++ "' to `" ++ final_fn - ++ "'") output_fn final_fn - return (dflags', final_fn) - - - -pipeLoop :: DynFlags -> Phase -> Phase - -> FilePath -> String -> Suffix - -> (Phase -> Maybe ModLocation -> IO FilePath) - -> Maybe ModLocation - -> IO (DynFlags, FilePath, Maybe ModLocation) - -pipeLoop dflags phase stop_phase - input_fn orig_basename orig_suff - orig_get_output_fn maybe_loc - - | phase `eqPhase` stop_phase -- All done - = return (dflags, input_fn, maybe_loc) - - | not (phase `happensBefore` stop_phase) - -- Something has gone wrong. We'll try to cover all the cases when - -- this could happen, so if we reach here it is a panic. - -- eg. it might happen if the -C flag is used on a source file that - -- has {-# OPTIONS -fasm #-}. - = panic ("pipeLoop: at phase " ++ show phase ++ - " but I wanted to stop at phase " ++ show stop_phase) - - | otherwise - = do { (next_phase, dflags', maybe_loc, output_fn) - <- runPhase phase stop_phase dflags orig_basename - orig_suff input_fn orig_get_output_fn maybe_loc - ; pipeLoop dflags' next_phase stop_phase output_fn - orig_basename orig_suff orig_get_output_fn maybe_loc } - -getOutputFilename - :: DynFlags -> Phase -> PipelineOutput -> String - -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath -getOutputFilename dflags stop_phase output basename - = func - where - hcsuf = hcSuf dflags - odir = objectDir dflags - osuf = objectSuf dflags - keep_hc = dopt Opt_KeepHcFiles dflags - keep_raw_s = dopt Opt_KeepRawSFiles dflags - keep_s = dopt Opt_KeepSFiles dflags - - myPhaseInputExt HCc = hcsuf - myPhaseInputExt StopLn = osuf - myPhaseInputExt other = phaseInputExt other - - func next_phase maybe_location - | is_last_phase, Persistent <- output = persistent_fn - | is_last_phase, SpecificFile f <- output = return f - | keep_this_output = persistent_fn - | otherwise = newTempName dflags suffix - where - is_last_phase = next_phase `eqPhase` stop_phase - - -- sometimes, we keep output from intermediate stages - keep_this_output = - case next_phase of - StopLn -> True - Mangle | keep_raw_s -> True - As | keep_s -> True - HCc | keep_hc -> True - _other -> False - - suffix = myPhaseInputExt next_phase - - -- persistent object files get put in odir - persistent_fn - | StopLn <- next_phase = return odir_persistent - | otherwise = return persistent - - persistent = basename `joinFileExt` suffix - - odir_persistent - | Just loc <- maybe_location = ml_obj_file loc - | Just d <- odir = d `joinFileName` persistent - | otherwise = persistent - - --- ----------------------------------------------------------------------------- --- Each phase in the pipeline returns the next phase to execute, and the --- name of the file in which the output was placed. --- --- We must do things dynamically this way, because we often don't know --- what the rest of the phases will be until part-way through the --- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning --- of a source file can change the latter stages of the pipeline from --- taking the via-C route to using the native code generator. - -runPhase :: Phase -- Do this phase first - -> Phase -- Stop just before this phase - -> DynFlags - -> String -- basename of original input source - -> String -- its extension - -> FilePath -- name of file which contains the input to this phase. - -> (Phase -> Maybe ModLocation -> IO FilePath) - -- how to calculate the output filename - -> Maybe ModLocation -- the ModLocation, if we have one - -> IO (Phase, -- next phase - DynFlags, -- new dynamic flags - Maybe ModLocation, -- the ModLocation, if we have one - FilePath) -- output filename - - -- Invariant: the output filename always contains the output - -- Interesting case: Hsc when there is no recompilation to do - -- Then the output filename is still a .o file - -------------------------------------------------------------------------------- --- Unlit phase - -runPhase (Unlit sf) _stop dflags _basename _suff input_fn get_output_fn maybe_loc - = do let unlit_flags = getOpts dflags opt_L - -- The -h option passes the file name for unlit to put in a #line directive - output_fn <- get_output_fn (Cpp sf) maybe_loc - - SysTools.runUnlit dflags - (map SysTools.Option unlit_flags ++ - [ SysTools.Option "-h" - , SysTools.Option input_fn - , SysTools.FileOption "" input_fn - , SysTools.FileOption "" output_fn - ]) - - return (Cpp sf, dflags, maybe_loc, output_fn) - -------------------------------------------------------------------------------- --- Cpp phase : (a) gets OPTIONS out of file --- (b) runs cpp if necessary - -runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc - = do src_opts <- getOptionsFromFile input_fn - (dflags,unhandled_flags) <- parseDynamicFlags dflags0 (map unLoc src_opts) - checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff) - - if not (dopt Opt_Cpp dflags) then - -- no need to preprocess CPP, just pass input file along - -- to the next phase of the pipeline. - return (HsPp sf, dflags, maybe_loc, input_fn) - else do - output_fn <- get_output_fn (HsPp sf) maybe_loc - doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn - return (HsPp sf, dflags, maybe_loc, output_fn) - -------------------------------------------------------------------------------- --- HsPp phase - -runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc - = do if not (dopt Opt_Pp dflags) then - -- no need to preprocess, just pass input file along - -- to the next phase of the pipeline. - return (Hsc sf, dflags, maybe_loc, input_fn) - else do - let hspp_opts = getOpts dflags opt_F - let orig_fn = basename `joinFileExt` suff - output_fn <- get_output_fn (Hsc sf) maybe_loc - SysTools.runPp dflags - ( [ SysTools.Option orig_fn - , SysTools.Option input_fn - , SysTools.FileOption "" output_fn - ] ++ - map SysTools.Option hspp_opts - ) - return (Hsc sf, dflags, maybe_loc, output_fn) - ------------------------------------------------------------------------------ --- Hsc phase - --- Compilation of a single module, in "legacy" mode (_not_ under --- the direction of the compilation manager). -runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _maybe_loc - = do -- normal Hsc mode, not mkdependHS - - -- we add the current directory (i.e. the directory in which - -- the .hs files resides) to the import path, since this is - -- what gcc does, and it's probably what you want. - let current_dir = directoryOf basename - - paths = includePaths dflags0 - dflags = dflags0 { includePaths = current_dir : paths } - - -- gather the imports and module name - (hspp_buf,mod_name) <- - case src_flavour of - ExtCoreFile -> do { -- no explicit imports in ExtCore input. - ; m <- getCoreModuleName input_fn - ; return (Nothing, mkModule m) } - - other -> do { buf <- hGetStringBuffer input_fn - ; (_,_,L _ mod_name) <- getImports dflags buf input_fn - ; return (Just buf, mod_name) } - - -- Build a ModLocation to pass to hscMain. - -- The source filename is rather irrelevant by now, but it's used - -- by hscMain for messages. hscMain also needs - -- the .hi and .o filenames, and this is as good a way - -- as any to generate them, and better than most. (e.g. takes - -- into accout the -osuf flags) - location1 <- mkHomeModLocation2 dflags mod_name basename suff - - -- Boot-ify it if necessary - let location2 | isHsBoot src_flavour = addBootSuffixLocn location1 - | otherwise = location1 - - - -- Take -ohi into account if present - -- This can't be done in mkHomeModuleLocation because - -- it only applies to the module being compiles - let ohi = outputHi dflags - location3 | Just fn <- ohi = location2{ ml_hi_file = fn } - | otherwise = location2 - - -- Take -o into account if present - -- Very like -ohi, but we must *only* do this if we aren't linking - -- (If we're linking then the -o applies to the linked thing, not to - -- the object file for one module.) - -- Note the nasty duplication with the same computation in compileFile above - let expl_o_file = outputFile dflags - location4 | Just ofile <- expl_o_file - , isNoLink (ghcLink dflags) - = location3 { ml_obj_file = ofile } - | otherwise = location3 - - -- Make the ModSummary to hand to hscMain - src_timestamp <- getModificationTime (basename `joinFileExt` suff) - let - unused_field = panic "runPhase:ModSummary field" - -- Some fields are not looked at by hscMain - mod_summary = ModSummary { ms_mod = mod_name, - ms_hsc_src = src_flavour, - ms_hspp_file = input_fn, - ms_hspp_opts = dflags, - ms_hspp_buf = hspp_buf, - ms_location = location4, - ms_hs_date = src_timestamp, - ms_obj_date = Nothing, - ms_imps = unused_field, - ms_srcimps = unused_field } - - o_file = ml_obj_file location4 -- The real object file - - - -- Figure out if the source has changed, for recompilation avoidance. - -- - -- Setting source_unchanged to True means that M.o seems - -- to be up to date wrt M.hs; so no need to recompile unless imports have - -- changed (which the compiler itself figures out). - -- Setting source_unchanged to False tells the compiler that M.o is out of - -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless. - let do_recomp = dopt Opt_RecompChecking dflags - source_unchanged <- - if not do_recomp || not (isStopLn stop) - -- Set source_unchanged to False unconditionally if - -- (a) recompilation checker is off, or - -- (b) we aren't going all the way to .o file (e.g. ghc -S) - then return False - -- Otherwise look at file modification dates - else do o_file_exists <- doesFileExist o_file - if not o_file_exists - then return False -- Need to recompile - else do t2 <- getModificationTime o_file - if t2 > src_timestamp - then return True - else return False - - -- get the DynFlags - let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags) - let next_phase = hscNextPhase dflags src_flavour hsc_lang - output_fn <- get_output_fn next_phase (Just location4) - - let dflags' = dflags { hscTarget = hsc_lang, - hscOutName = output_fn, - extCoreName = basename ++ ".hcr" } - - hsc_env <- newHscEnv dflags' - - -- Tell the finder cache about this module - addHomeModuleToFinder hsc_env mod_name location4 - - -- run the compiler! - mbResult <- hscCompileOneShot hsc_env - mod_summary source_unchanged - Nothing -- No iface - Nothing -- No "module i of n" progress info - - case mbResult of - Nothing -> throwDyn (PhaseFailed "hsc" (ExitFailure 1)) - Just HscNoRecomp - -> do SysTools.touch dflags' "Touching object file" o_file - -- The .o file must have a later modification date - -- than the source file (else we wouldn't be in HscNoRecomp) - -- but we touch it anyway, to keep 'make' happy (we think). - return (StopLn, dflags', Just location4, o_file) - Just (HscRecomp hasStub) - -> do when hasStub $ - do stub_o <- compileStub dflags' mod_name location4 - consIORef v_Ld_inputs stub_o - -- In the case of hs-boot files, generate a dummy .o-boot - -- stamp file for the benefit of Make - when (isHsBoot src_flavour) $ - SysTools.touch dflags' "Touching object file" o_file - return (next_phase, dflags', Just location4, output_fn) - ------------------------------------------------------------------------------ --- Cmm phase - -runPhase CmmCpp stop dflags basename suff input_fn get_output_fn maybe_loc - = do - output_fn <- get_output_fn Cmm maybe_loc - doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn - return (Cmm, dflags, maybe_loc, output_fn) - -runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc - = do - let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags) - let next_phase = hscNextPhase dflags HsSrcFile hsc_lang - output_fn <- get_output_fn next_phase maybe_loc - - let dflags' = dflags { hscTarget = hsc_lang, - hscOutName = output_fn, - extCoreName = basename ++ ".hcr" } - - ok <- hscCmmFile dflags' input_fn - - when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1)) - - return (next_phase, dflags, maybe_loc, output_fn) - ------------------------------------------------------------------------------ --- Cc phase - --- we don't support preprocessing .c files (with -E) now. Doing so introduces --- way too many hacks, and I can't say I've ever used it anyway. - -runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc - | cc_phase `eqPhase` Cc || cc_phase `eqPhase` HCc - = do let cc_opts = getOpts dflags opt_c - hcc = cc_phase `eqPhase` HCc - - let cmdline_include_paths = includePaths dflags - - -- HC files have the dependent packages stamped into them - pkgs <- if hcc then getHCFilePackages input_fn else return [] - - -- add package include paths even if we're just compiling .c - -- files; this is the Value Add(TM) that using ghc instead of - -- gcc gives you :) - pkg_include_dirs <- getPackageIncludePath dflags pkgs - let include_paths = foldr (\ x xs -> "-I" : x : xs) [] - (cmdline_include_paths ++ pkg_include_dirs) - - let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags - let pic_c_flags = picCCOpts dflags - - let verb = getVerbFlag dflags - - pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs - - let split_objs = dopt Opt_SplitObjs dflags - split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ] - | otherwise = [ ] - - let excessPrecision = dopt Opt_ExcessPrecision dflags - - let cc_opt | optLevel dflags >= 2 = "-O2" - | otherwise = "-O" - - -- Decide next phase - - let mangle = dopt Opt_DoAsmMangling dflags - next_phase - | hcc && mangle = Mangle - | otherwise = As - output_fn <- get_output_fn next_phase maybe_loc - - let - more_hcc_opts = -#if i386_TARGET_ARCH - -- on x86 the floating point regs have greater precision - -- than a double, which leads to unpredictable results. - -- By default, we turn this off with -ffloat-store unless - -- the user specified -fexcess-precision. - (if excessPrecision then [] else [ "-ffloat-store" ]) ++ -#endif - -- gcc's -fstrict-aliasing allows two accesses to memory - -- to be considered non-aliasing if they have different types. - -- This interacts badly with the C code we generate, which is - -- very weakly typed, being derived from C--. - ["-fno-strict-aliasing"] - - - - SysTools.runCc dflags ( - -- force the C compiler to interpret this file as C when - -- compiling .hc files, by adding the -x c option. - -- Also useful for plain .c files, just in case GHC saw a - -- -x c option. - [ SysTools.Option "-x", SysTools.Option "c"] ++ - [ SysTools.FileOption "" input_fn - , SysTools.Option "-o" - , SysTools.FileOption "" output_fn - ] - ++ map SysTools.Option ( - md_c_flags - ++ pic_c_flags - ++ (if hcc && mangle - then md_regd_c_flags - else []) - ++ (if hcc - then more_hcc_opts - else []) - ++ [ verb, "-S", "-Wimplicit", cc_opt ] - ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ] - ++ cc_opts - ++ split_opt - ++ include_paths - ++ pkg_extra_cc_opts - )) - - return (next_phase, dflags, maybe_loc, output_fn) - - -- ToDo: postprocess the output from gcc - ------------------------------------------------------------------------------ --- Mangle phase - -runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc - = do let mangler_opts = getOpts dflags opt_m - -#if i386_TARGET_ARCH - machdep_opts <- return [ show (stolen_x86_regs dflags) ] -#else - machdep_opts <- return [] -#endif - - let split = dopt Opt_SplitObjs dflags - next_phase - | split = SplitMangle - | otherwise = As - output_fn <- get_output_fn next_phase maybe_loc - - SysTools.runMangle dflags (map SysTools.Option mangler_opts - ++ [ SysTools.FileOption "" input_fn - , SysTools.FileOption "" output_fn - ] - ++ map SysTools.Option machdep_opts) - - return (next_phase, dflags, maybe_loc, output_fn) - ------------------------------------------------------------------------------ --- Splitting phase - -runPhase SplitMangle stop dflags _basename _suff input_fn get_output_fn maybe_loc - = do -- tmp_pfx is the prefix used for the split .s files - -- We also use it as the file to contain the no. of split .s files (sigh) - split_s_prefix <- SysTools.newTempName dflags "split" - let n_files_fn = split_s_prefix - - SysTools.runSplit dflags - [ SysTools.FileOption "" input_fn - , SysTools.FileOption "" split_s_prefix - , SysTools.FileOption "" n_files_fn - ] - - -- Save the number of split files for future references - s <- readFile n_files_fn - let n_files = read s :: Int - writeIORef v_Split_info (split_s_prefix, n_files) - - -- Remember to delete all these files - addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s" - | n <- [1..n_files]] - - return (SplitAs, dflags, maybe_loc, "**splitmangle**") - -- we don't use the filename - ------------------------------------------------------------------------------ --- As phase - -runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc - = do let as_opts = getOpts dflags opt_a - let cmdline_include_paths = includePaths dflags - - output_fn <- get_output_fn StopLn maybe_loc - - -- we create directories for the object file, because it - -- might be a hierarchical module. - createDirectoryHierarchy (directoryOf output_fn) - - SysTools.runAs dflags - (map SysTools.Option as_opts - ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ] - ++ [ SysTools.Option "-c" - , SysTools.FileOption "" input_fn - , SysTools.Option "-o" - , SysTools.FileOption "" output_fn - ]) - - return (StopLn, dflags, maybe_loc, output_fn) - - -runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc - = do - output_fn <- get_output_fn StopLn maybe_loc - - let (base_o, _) = splitFilename output_fn - split_odir = base_o ++ "_split" - osuf = objectSuf dflags - - createDirectoryHierarchy split_odir - - -- remove M_split/ *.o, because we're going to archive M_split/ *.o - -- later and we don't want to pick up any old objects. - fs <- getDirectoryContents split_odir - mapM_ removeFile $ map (split_odir `joinFileName`) - $ filter (osuf `isSuffixOf`) fs - - let as_opts = getOpts dflags opt_a - - (split_s_prefix, n) <- readIORef v_Split_info - - let split_s n = split_s_prefix ++ "__" ++ show n `joinFileExt` "s" - split_obj n = split_odir `joinFileName` - filenameOf base_o ++ "__" ++ show n - `joinFileExt` osuf - - let assemble_file n - = SysTools.runAs dflags - (map SysTools.Option as_opts ++ - [ SysTools.Option "-c" - , SysTools.Option "-o" - , SysTools.FileOption "" (split_obj n) - , SysTools.FileOption "" (split_s n) - ]) - - mapM_ assemble_file [1..n] - - -- and join the split objects into a single object file: - let ld_r args = SysTools.runLink dflags ([ - SysTools.Option "-nostdlib", - SysTools.Option "-nodefaultlibs", - SysTools.Option "-Wl,-r", - SysTools.Option ld_x_flag, - SysTools.Option "-o", - SysTools.FileOption "" output_fn ] ++ args) - ld_x_flag | null cLD_X = "" - | otherwise = "-Wl,-x" - - if cLdIsGNULd == "YES" - then do - let script = split_odir `joinFileName` "ld.script" - writeFile script $ - "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")" - ld_r [SysTools.FileOption "" script] - else do - ld_r (map (SysTools.FileOption "" . split_obj) [1..n]) - - return (StopLn, dflags, maybe_loc, output_fn) - - ------------------------------------------------------------------------------ --- MoveBinary sort-of-phase --- After having produced a binary, move it somewhere else and generate a --- wrapper script calling the binary. Currently, we need this only in --- a parallel way (i.e. in GUM), because PVM expects the binary in a --- central directory. --- This is called from staticLink below, after linking. I haven't made it --- a separate phase to minimise interfering with other modules, and --- we don't need the generality of a phase (MoveBinary is always --- done after linking and makes only sense in a parallel setup) -- HWL - -runPhase_MoveBinary input_fn - = do - sysMan <- getSysMan - pvm_root <- getEnv "PVM_ROOT" - pvm_arch <- getEnv "PVM_ARCH" - let - pvm_executable_base = "=" ++ input_fn - pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base - -- nuke old binary; maybe use configur'ed names for cp and rm? - system ("rm -f " ++ pvm_executable) - -- move the newly created binary into PVM land - system ("cp -p " ++ input_fn ++ " " ++ pvm_executable) - -- generate a wrapper script for running a parallel prg under PVM - writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan) - return True - --- generates a Perl skript starting a parallel prg under PVM -mk_pvm_wrapper_script :: String -> String -> String -> String -mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $ - [ - "eval 'exec perl -S $0 ${1+\"$@\"}'", - " if $running_under_some_shell;", - "# =!=!=!=!=!=!=!=!=!=!=!", - "# This script is automatically generated: DO NOT EDIT!!!", - "# Generated by Glasgow Haskell Compiler", - "# ngoqvam choHbogh vaj' vIHoHnISbej !!!!", - "#", - "$pvm_executable = '" ++ pvm_executable ++ "';", - "$pvm_executable_base = '" ++ pvm_executable_base ++ "';", - "$SysMan = '" ++ sysMan ++ "';", - "", - {- ToDo: add the magical shortcuts again iff we actually use them -- HWL - "# first, some magical shortcuts to run "commands" on the binary", - "# (which is hidden)", - "if ($#ARGV == 1 && $ARGV[0] eq '+RTS' && $ARGV[1] =~ /^--((size|file|strip|rm|nm).*)/ ) {", - " local($cmd) = $1;", - " system("$cmd $pvm_executable");", - " exit(0); # all done", - "}", -} - "", - "# Now, run the real binary; process the args first", - "$ENV{'PE'} = $pvm_executable_base;", -- ++ pvm_executable_base, - "$debug = '';", - "$nprocessors = 0; # the default: as many PEs as machines in PVM config", - "@nonPVM_args = ();", - "$in_RTS_args = 0;", - "", - "args: while ($a = shift(@ARGV)) {", - " if ( $a eq '+RTS' ) {", - " $in_RTS_args = 1;", - " } elsif ( $a eq '-RTS' ) {", - " $in_RTS_args = 0;", - " }", - " if ( $a eq '-d' && $in_RTS_args ) {", - " $debug = '-';", - " } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {", - " $nprocessors = $1;", - " } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {", - " $nprocessors = $1;", - " } else {", - " push(@nonPVM_args, $a);", - " }", - "}", - "", - "local($return_val) = 0;", - "# Start the parallel execution by calling SysMan", - "system(\"$SysMan $debug $pvm_executable $nprocessors @nonPVM_args\");", - "$return_val = $?;", - "# ToDo: fix race condition moving files and flushing them!!", - "system(\"cp $ENV{'HOME'}/$pvm_executable_base.???.gr .\") if -f \"$ENV{'HOME'}/$pvm_executable_base.002.gr\";", - "exit($return_val);" - ] - ------------------------------------------------------------------------------ --- Complain about non-dynamic flags in OPTIONS pragmas - -checkProcessArgsResult flags filename - = do when (notNull flags) (throwDyn (ProgramError ( - showSDoc (hang (text filename <> char ':') - 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+> - hsep (map text flags))) - ))) - ------------------------------------------------------------------------------ --- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file - -getHCFilePackages :: FilePath -> IO [PackageId] -getHCFilePackages filename = - EXCEPTION.bracket (openFile filename ReadMode) hClose $ \h -> do - l <- hGetLine h - case l of - '/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest -> - return (map stringToPackageId (words rest)) - _other -> - return [] - ------------------------------------------------------------------------------ --- Static linking, of .o files - --- The list of packages passed to link is the list of packages on --- which this program depends, as discovered by the compilation --- manager. It is combined with the list of packages that the user --- specifies on the command line with -package flags. --- --- In one-shot linking mode, we can't discover the package --- dependencies (because we haven't actually done any compilation or --- read any interface files), so the user must explicitly specify all --- the packages. - -staticLink :: DynFlags -> [FilePath] -> [PackageId] -> IO () -staticLink dflags o_files dep_packages = do - let verb = getVerbFlag dflags - output_fn = exeFileName dflags - - -- get the full list of packages to link with, by combining the - -- explicit packages with the auto packages and all of their - -- dependencies, and eliminating duplicates. - - pkg_lib_paths <- getPackageLibraryPath dflags dep_packages - let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths - - let lib_paths = libraryPaths dflags - let lib_path_opts = map ("-L"++) lib_paths - - pkg_link_opts <- getPackageLinkOpts dflags dep_packages - -#ifdef darwin_TARGET_OS - pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages - let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths - - let framework_paths = frameworkPaths dflags - framework_path_opts = map ("-F"++) framework_paths - - pkg_frameworks <- getPackageFrameworks dflags dep_packages - let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ] - - let frameworks = cmdlineFrameworks dflags - framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ] - -- reverse because they're added in reverse order from the cmd line -#endif - - -- probably _stub.o files - extra_ld_inputs <- readIORef v_Ld_inputs - - -- opts from -optl- (including -l options) - let extra_ld_opts = getOpts dflags opt_l - - let ways = wayNames dflags - - -- Here are some libs that need to be linked at the *end* of - -- the command line, because they contain symbols that are referred to - -- by the RTS. We can't therefore use the ordinary way opts for these. - let - debug_opts | WayDebug `elem` ways = [ -#if defined(HAVE_LIBBFD) - "-lbfd", "-liberty" -#endif - ] - | otherwise = [] - - let - thread_opts | WayThreaded `elem` ways = [ -#if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS) - "-lpthread" -#endif -#if defined(osf3_TARGET_OS) - , "-lexc" -#endif - ] - | otherwise = [] - - let (md_c_flags, _) = machdepCCOpts dflags - SysTools.runLink dflags ( - [ SysTools.Option verb - , SysTools.Option "-o" - , SysTools.FileOption "" output_fn - ] - ++ map SysTools.Option ( - md_c_flags - ++ o_files - ++ extra_ld_inputs - ++ lib_path_opts - ++ extra_ld_opts -#ifdef darwin_TARGET_OS - ++ framework_path_opts - ++ framework_opts -#endif - ++ pkg_lib_path_opts - ++ pkg_link_opts -#ifdef darwin_TARGET_OS - ++ pkg_framework_path_opts - ++ pkg_framework_opts -#endif - ++ debug_opts - ++ thread_opts - )) - - -- parallel only: move binary to another dir -- HWL - when (WayPar `elem` ways) - (do success <- runPhase_MoveBinary output_fn - if success then return () - else throwDyn (InstallationError ("cannot move binary to PVM dir"))) - - -exeFileName :: DynFlags -> FilePath -exeFileName dflags - | Just s <- outputFile dflags = -#if defined(mingw32_HOST_OS) - if null (suffixOf s) - then s `joinFileExt` "exe" - else s -#else - s -#endif - | otherwise = -#if defined(mingw32_HOST_OS) - "main.exe" -#else - "a.out" -#endif - ------------------------------------------------------------------------------ --- Making a DLL (only for Win32) - -doMkDLL :: DynFlags -> [String] -> [PackageId] -> IO () -doMkDLL dflags o_files dep_packages = do - let verb = getVerbFlag dflags - let static = opt_Static - let no_hs_main = dopt Opt_NoHsMain dflags - let o_file = outputFile dflags - let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; } - - pkg_lib_paths <- getPackageLibraryPath dflags dep_packages - let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths - - let lib_paths = libraryPaths dflags - let lib_path_opts = map ("-L"++) lib_paths - - pkg_link_opts <- getPackageLinkOpts dflags dep_packages - - -- probably _stub.o files - extra_ld_inputs <- readIORef v_Ld_inputs - - -- opts from -optdll- - let extra_ld_opts = getOpts dflags opt_dll - - let pstate = pkgState dflags - rts_id | ExtPackage id <- rtsPackageId pstate = id - | otherwise = panic "staticLink: rts package missing" - base_id | ExtPackage id <- basePackageId pstate = id - | otherwise = panic "staticLink: base package missing" - rts_pkg = getPackageDetails pstate rts_id - base_pkg = getPackageDetails pstate base_id - - let extra_os = if static || no_hs_main - then [] - else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o", - head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ] - - let (md_c_flags, _) = machdepCCOpts dflags - SysTools.runMkDLL dflags - ([ SysTools.Option verb - , SysTools.Option "-o" - , SysTools.FileOption "" output_fn - ] - ++ map SysTools.Option ( - md_c_flags - ++ o_files - ++ extra_os - ++ [ "--target=i386-mingw32" ] - ++ extra_ld_inputs - ++ lib_path_opts - ++ extra_ld_opts - ++ pkg_lib_path_opts - ++ pkg_link_opts - ++ (if "--def" `elem` (concatMap words extra_ld_opts) - then [ "" ] - else [ "--export-all" ]) - )) - --- ----------------------------------------------------------------------------- --- Running CPP - -doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO () -doCpp dflags raw include_cc_opts input_fn output_fn = do - let hscpp_opts = getOpts dflags opt_P - let cmdline_include_paths = includePaths dflags - - pkg_include_dirs <- getPackageIncludePath dflags [] - let include_paths = foldr (\ x xs -> "-I" : x : xs) [] - (cmdline_include_paths ++ pkg_include_dirs) - - let verb = getVerbFlag dflags - - let cc_opts - | not include_cc_opts = [] - | otherwise = (optc ++ md_c_flags) - where - optc = getOpts dflags opt_c - (md_c_flags, _) = machdepCCOpts dflags - - let cpp_prog args | raw = SysTools.runCpp dflags args - | otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args) - - let target_defs = - [ "-D" ++ HOST_OS ++ "_BUILD_OS=1", - "-D" ++ HOST_ARCH ++ "_BUILD_ARCH=1", - "-D" ++ TARGET_OS ++ "_HOST_OS=1", - "-D" ++ TARGET_ARCH ++ "_HOST_ARCH=1" ] - -- remember, in code we *compile*, the HOST is the same our TARGET, - -- and BUILD is the same as our HOST. - - cpp_prog ([SysTools.Option verb] - ++ map SysTools.Option include_paths - ++ map SysTools.Option hsSourceCppOpts - ++ map SysTools.Option hscpp_opts - ++ map SysTools.Option cc_opts - ++ map SysTools.Option target_defs - ++ [ SysTools.Option "-x" - , SysTools.Option "c" - , SysTools.Option input_fn - -- We hackily use Option instead of FileOption here, so that the file - -- name is not back-slashed on Windows. cpp is capable of - -- dealing with / in filenames, so it works fine. Furthermore - -- if we put in backslashes, cpp outputs #line directives - -- with *double* backslashes. And that in turn means that - -- our error messages get double backslashes in them. - -- In due course we should arrange that the lexer deals - -- with these \\ escapes properly. - , SysTools.Option "-o" - , SysTools.FileOption "" output_fn - ]) - -cHaskell1Version = "5" -- i.e., Haskell 98 - --- Default CPP defines in Haskell source -hsSourceCppOpts = - [ "-D__HASKELL1__="++cHaskell1Version - , "-D__GLASGOW_HASKELL__="++cProjectVersionInt - , "-D__HASKELL98__" - , "-D__CONCURRENT_HASKELL__" - ] - - --- ----------------------------------------------------------------------------- --- Misc. - -hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase -hscNextPhase dflags HsBootFile hsc_lang = StopLn -hscNextPhase dflags other hsc_lang = - case hsc_lang of - HscC -> HCc - HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle - | otherwise -> As - HscNothing -> StopLn - HscInterpreted -> StopLn - _other -> StopLn - - -hscMaybeAdjustTarget :: DynFlags -> Phase -> HscSource -> HscTarget -> HscTarget -hscMaybeAdjustTarget dflags stop HsBootFile current_hsc_lang - = HscNothing -- No output (other than Foo.hi-boot) for hs-boot files -hscMaybeAdjustTarget dflags stop other current_hsc_lang - = hsc_lang - where - keep_hc = dopt Opt_KeepHcFiles dflags - hsc_lang - -- don't change the lang if we're interpreting - | current_hsc_lang == HscInterpreted = current_hsc_lang - - -- force -fvia-C if we are being asked for a .hc file - | HCc <- stop = HscC - | keep_hc = HscC - -- otherwise, stick to the plan - | otherwise = current_hsc_lang - -GLOBAL_VAR(v_Split_info, ("",0), (String,Int)) - -- The split prefix and number of files