X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FDriverPipeline.hs;h=8e4ee26a4630bb66e3188a005bd99af6ba260a1d;hb=ec968a32e9b02c230dfcbff9660c3e61900d8235;hp=72e326f5f7d203d6df019f048f48a19cfeb646d2;hpb=9af77fa423926fbda946b31e174173d0ec5ebac8;p=ghc-hetmet.git diff --git a/ghc/compiler/main/DriverPipeline.hs b/ghc/compiler/main/DriverPipeline.hs index 72e326f..8e4ee26 100644 --- a/ghc/compiler/main/DriverPipeline.hs +++ b/ghc/compiler/main/DriverPipeline.hs @@ -2,16 +2,17 @@ -- -- GHC Driver -- --- (c) The University of Glasgow 2002 +-- (c) The University of Glasgow 2005 -- ----------------------------------------------------------------------------- -#include "../includes/config.h" - 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 - genPipeline, runPipeline, pipeLoop, staticLink, + staticLink, -- Interfaces for the compilation manager (interpreted/batch-mode) preprocess, @@ -19,18 +20,17 @@ module DriverPipeline ( link, -- DLL building - doMkDLL + doMkDLL, + + getOptionsFromStringBuffer, -- used in module GHC + optionsErrorMsgs, -- ditto ) where #include "HsVersions.h" import Packages import GetImports -import DriverState -import DriverUtil -import DriverMkDepend import DriverPhases -import DriverFlags import SysTools ( newTempName, addFilesToClean, getSysMan, copy ) import qualified SysTools import HscMain @@ -39,49 +39,52 @@ import HscTypes import Outputable import Module import ErrUtils -import CmdLineOpts +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 Ctype ( is_ident ) +import StringBuffer ( StringBuffer(..), lexemeToString ) +import ParserCoreUtils ( getCoreModuleName ) +import SrcLoc ( srcLocSpan, mkSrcLoc ) +import FastString ( mkFastString ) +import Bag ( listToBag, emptyBag ) +import SrcLoc ( Located(..) ) -import ParserCoreUtils ( getCoreModuleName ) +import Distribution.Compiler ( extensionsToGHCFlag ) import EXCEPTION -import DATA_IOREF ( readIORef, writeIORef ) +import DATA_IOREF ( readIORef, writeIORef, IORef ) +import GLAEXTS ( Int(..) ) -#ifdef GHCI -import Time ( getClockTime ) -#endif import Directory import System import IO import Monad +import Data.List ( isSuffixOf ) import Maybe ------------------------------------------------------------------------------ --- Pre process ------------------------------------------------------------------------------ +-- --------------------------------------------------------------------------- +-- 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 :: FilePath -> IO FilePath -preprocess filename = - ASSERT(haskellish_src_file filename) - do restoreDynFlags -- Restore to state of last save - let fInfo = (filename, getFileSuffix filename) - pipeline <- genPipeline (StopBefore Hsc) ("preprocess") False - defaultHscLang fInfo - (fn,_) <- runPipeline pipeline fInfo - False{-no linking-} False{-no -o flag-} - return fn +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 -- Compile a single module, under the control of the compilation manager. -- @@ -90,175 +93,183 @@ preprocess filename = -- reading the OPTIONS pragma from the source file, and passing the -- output of hsc through the C compiler. --- The driver sits between 'compile' and 'hscMain', translating calls --- to the former into calls to the latter, and results from the latter --- into results from the former. It does things like preprocessing --- the .hs file if necessary, and compiling up the .stub_c files to --- generate Linkables. - -- NB. No old interface can also mean that the source has changed. -compile :: GhciMode -- distinguish batch from interactive - -> Module - -> ModLocation - -> Bool -- True <=> source unchanged - -> Bool -- True <=> have object - -> Maybe ModIface -- old interface, if available - -> HomePackageTable -- For home-module stuff - -> PersistentCompilerState -- persistent compiler state +compile :: HscEnv + -> ModSummary + -> Maybe Linkable -- Just linkable <=> source unchanged + -> Maybe ModIface -- Old interface, if available + -> Int -> Int -> IO CompResult data CompResult - = CompOK PersistentCompilerState -- Updated PCS - ModDetails -- New details - ModIface -- New iface - (Maybe Linkable) -- New code; Nothing => compilation was not reqd - -- (old code is still valid) + = CompOK ModDetails -- New details + ModIface -- New iface + (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable - | CompErrs PersistentCompilerState -- Updated PCS + | CompErrs -compile ghci_mode this_mod location - source_unchanged have_object - old_iface hpt pcs = do +compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do - dyn_flags <- restoreDynFlags -- Restore to the state of the last save + let dflags0 = hsc_dflags hsc_env + 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 - showPass dyn_flags - (showSDoc (text "Compiling" <+> ppr this_mod)) + showPass dflags0 ("Compiling " ++ showModMsg have_object mod_summary) - let verb = verbosity dyn_flags + let location = ms_location mod_summary let input_fn = expectJust "compile:hs" (ml_hs_file location) - let input_fnpp = expectJust "compile:hspp" (ml_hspp_file location) - let mod_name = moduleName this_mod - - when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp)) - - opts <- getOptionsFromSource input_fnpp - processArgs dynamic_flags opts [] - dyn_flags <- getDynFlags - - let hsc_lang = hscLang dyn_flags - (basename, _) = splitFilename input_fn - - keep_hc <- readIORef v_Keep_hc_files -#ifdef ILX - keep_il <- readIORef v_Keep_il_files -#endif - keep_s <- readIORef v_Keep_s_files - - output_fn <- - case hsc_lang of - HscAsm | keep_s -> return (basename ++ '.':phaseInputExt As) - | otherwise -> newTempName (phaseInputExt As) - HscC | keep_hc -> return (basename ++ '.':phaseInputExt HCc) - | otherwise -> newTempName (phaseInputExt HCc) - HscJava -> newTempName "java" -- ToDo -#ifdef ILX - HscILX | keep_il -> return (basename ++ '.':phaseInputExt Ilasm) - | otherwise -> newTempName (phaseInputExt Ilx2Il) -#endif - HscInterpreted -> return (error "no output file") - HscNothing -> return (error "no output file") + let input_fnpp = expectJust "compile:hspp" (ms_hspp_file mod_summary) + + debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp) + + -- Add in the OPTIONS from the source file + -- This is nasty: we've done this once already, in the compilation manager + -- It might be better to cache the flags in the ml_hspp_file field,say + let hspp_buf = expectJust "compile:hspp_buf" (ms_hspp_buf mod_summary) + opts = getOptionsFromStringBuffer hspp_buf input_fn + (dflags1,unhandled_flags) <- parseDynamicFlags dflags0 (map snd opts) + if (not (null unhandled_flags)) + then do printErrorsAndWarnings dflags1 (optionsErrorMsgs unhandled_flags opts input_fn) + return CompErrs + else do - let dyn_flags' = dyn_flags { hscOutName = output_fn, - hscStubCOutName = basename ++ "_stub.c", - hscStubHOutName = basename ++ "_stub.h", + 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 dflags1 + dflags = dflags1 { 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" } - -- figure out which header files to #include in a generated .hc file - c_includes <- getPackageCIncludes - cmdline_includes <- dynFlag cmdlineHcIncludes -- -#include options - - let cc_injects = unlines (map mk_include - (c_includes ++ reverse cmdline_includes)) - mk_include h_file = - case h_file of - '"':_{-"-} -> "#include "++h_file - '<':_ -> "#include "++h_file - _ -> "#include \""++h_file++"\"" - - writeIORef v_HCHeader cc_injects - -- -no-recomp should also work with --make - do_recomp <- readIORef v_Recomp - let source_unchanged' = source_unchanged && do_recomp - hsc_env = HscEnv { hsc_mode = ghci_mode, - hsc_dflags = dyn_flags', - hsc_HPT = hpt } + 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 -- run the compiler - hsc_result <- hscMain hsc_env pcs this_mod location - source_unchanged' have_object old_iface + hsc_result <- hscMain hsc_env' mod_summary + source_unchanged have_object old_iface + (Just (mod_index, nmods)) case hsc_result of - HscFail pcs -> return (CompErrs pcs) - - HscNoRecomp pcs details iface -> return (CompOK pcs details iface Nothing) - - HscRecomp pcs details iface - stub_h_exists stub_c_exists maybe_interpreted_code -> do - let - maybe_stub_o <- compileStub dyn_flags' stub_c_exists - let stub_unlinked = case maybe_stub_o of - Nothing -> [] - Just stub_o -> [ DotO stub_o ] + HscFail -> return CompErrs + + HscNoRecomp details iface -> + ASSERT(isJust maybe_old_linkable) + return (CompOK details iface maybe_old_linkable) + + HscRecomp details iface stub_h_exists stub_c_exists maybe_interpreted_code + + | isHsBoot src_flavour -- No further compilation to do + -> do case hsc_lang of + HscInterpreted -> return () + _other -> SysTools.touch dflags' "Touching object file" + object_filename + return (CompOK details iface Nothing) + + | otherwise -- Normal source file + -> do + stub_unlinked <- + if stub_c_exists then do + stub_o <- compileStub dflags' this_mod location + return [ DotO stub_o ] + else + return [] (hs_unlinked, unlinked_time) <- case hsc_lang of -- in interpreted mode, just return the compiled code -- as our "unlinked" object. - HscInterpreted -> - case maybe_interpreted_code of + HscInterpreted + -> case maybe_interpreted_code of #ifdef GHCI - Just comp_bc -> do tm <- getClockTime - return ([BCOs comp_bc], tm) + Just comp_bc -> return ([BCOs comp_bc], 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. #endif Nothing -> panic "compile: no interpreted code" - -- we're in batch mode: finish the compilation pipeline. - _other -> do pipe <- genPipeline (StopBefore Ln) "" True - hsc_lang (output_fn, getFileSuffix output_fn) - -- runPipeline takes input_fn so it can split off - -- the base name and use it as the base of - -- the output object file. - let (basename, suffix) = splitFilename input_fn - (o_file,_) <- - pipeLoop pipe (output_fn, getFileSuffix output_fn) - False False - basename suffix - o_time <- getModificationTime o_file - return ([DotO o_file], o_time) - - let linkable = LM unlinked_time mod_name + 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 pcs details iface (Just linkable)) + return (CompOK details iface (Just linkable)) ----------------------------------------------------------------------------- -- stub .h and .c files (for foreign export support) -compileStub dflags stub_c_exists - | not stub_c_exists = return Nothing - | stub_c_exists = do +-- 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 = hscStubCOutName dflags - pipeline <- genPipeline (StopBefore Ln) "" True defaultHscLang (stub_c,"c") - (stub_o,_) <- runPipeline pipeline (stub_c,"c") False{-no linking-} - False{-no -o option-} - return (Just stub_o) + let (stub_c,_) = mkStubPaths dflags mod location + runPipeline StopLn dflags (stub_c,Nothing) + (SpecificFile stub_o) Nothing{-no ModLocation-} + return stub_o ------------------------------------------------------------------------------ --- Link ------------------------------------------------------------------------------ -link :: GhciMode -- interactive or batch +-- --------------------------------------------------------------------------- +-- Link + +link :: GhcMode -- interactive or batch -> DynFlags -- dynamic flags -> Bool -- attempt linking in batch mode? - -> [Linkable] + -> HomePackageTable -- what to link -> IO SuccessFlag -- For the moment, in the batch linker, we don't bother to tell doLink @@ -268,595 +279,538 @@ link :: GhciMode -- interactive or batch -- exports main, i.e., we have good reason to believe that linking -- will succeed. --- There will be (ToDo: are) two lists passed to link. These --- correspond to --- --- 1. The list of all linkables in the current home package. This is --- used by the batch linker to link the program, and by the interactive --- linker to decide which modules from the previous link it can --- throw away. --- 2. The list of modules on which we just called "compile". This list --- is used by the interactive linker to decide which modules need --- to be actually linked this time around (or unlinked and re-linked --- if the module was recompiled). - -link mode dflags batch_attempt_linking linkables - = do let verb = verbosity dflags - when (verb >= 3) $ do - hPutStrLn stderr "link: linkables are ..." - hPutStrLn stderr (showSDoc (vcat (map ppr linkables))) - - res <- link' mode dflags batch_attempt_linking linkables - - when (verb >= 3) (hPutStrLn stderr "link: done") - - return res - #ifdef GHCI -link' Interactive dflags batch_attempt_linking linkables - = do showPass dflags "Not Linking...(demand linker will do the job)" - -- linkModules dflags linkables +link Interactive dflags batch_attempt_linking hpt + = do -- Not Linking...(demand linker will do the job) return Succeeded #endif -link' Batch dflags batch_attempt_linking linkables - | batch_attempt_linking - = do when (verb >= 1) $ - hPutStrLn stderr "ghc: linking ..." +link JustTypecheck dflags batch_attempt_linking hpt + = return Succeeded - -- Don't showPass in Batch mode; doLink will do that for us. - staticLink (concatMap getOfiles linkables) - - -- staticLink only returns if it succeeds - return Succeeded - - | otherwise - = do when (verb >= 3) $ do - hPutStrLn stderr "link(batch): upsweep (partially) failed OR" - hPutStrLn stderr " Main.main not exported; not linking." - return Succeeded - where - verb = verbosity dflags - getOfiles (LM _ _ us) = map nameOfObject (filter isObject us) +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 ------------------------------------------------------------------------------ --- genPipeline: Pipeline construction ------------------------------------------------------------------------------ + debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables)) --- Herein is all the magic about which phases to run in which order, whether --- the intermediate files should be in TMPDIR or in the current directory, --- what the suffix of the intermediate files should be, etc. - --- The following compilation pipeline algorithm is fairly hacky. A --- better way to do this would be to express the whole compilation as a --- data flow DAG, where the nodes are the intermediate files and the --- edges are the compilation phases. This framework would also work --- nicely if a haskell dependency generator was included in the --- driver. - --- It would also deal much more cleanly with compilation phases that --- generate multiple intermediates, (eg. hsc generates .hc, .hi, and --- possibly stub files), where some of the output files need to be --- processed further (eg. the stub files need to be compiled by the C --- compiler). - --- A cool thing to do would then be to execute the data flow graph --- concurrently, automatically taking advantage of extra processors on --- the host machine. For example, when compiling two Haskell files --- where one depends on the other, the data flow graph would determine --- that the C compiler from the first compilation can be overlapped --- with the hsc compilation for the second file. - -data IntermediateFileType - = Temporary - | Persistent - deriving (Eq, Show) - -genPipeline - :: GhcMode -- when to stop - -> String -- "stop after" flag (for error messages) - -> Bool -- True => output is persistent - -> HscLang -- preferred output language for hsc - -> (FilePath, String) -- original filename & its suffix - -> IO [ -- list of phases to run for this file - (Phase, - IntermediateFileType, -- keep the output from this phase? - String) -- output file suffix - ] - -genPipeline todo stop_flag persistent_output lang (filename,suffix) - = do - split <- readIORef v_Split_object_files - mangle <- readIORef v_Do_asm_mangling - keep_hc <- readIORef v_Keep_hc_files -#ifdef ILX - keep_il <- readIORef v_Keep_il_files - keep_ilx <- readIORef v_Keep_ilx_files -#endif - keep_raw_s <- readIORef v_Keep_raw_s_files - keep_s <- readIORef v_Keep_s_files - osuf <- readIORef v_Object_suf - hcsuf <- readIORef v_HC_suf - - let - ----------- ----- ---- --- -- -- - - - - start = startPhase suffix + -- 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 - -- special case for mkdependHS: .hspp files go through MkDependHS - start_phase | todo == DoMkDependHS && start == Hsc = MkDependHS - | otherwise = start + let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us) + obj_files = concatMap getOfiles linkables - haskellish = haskellish_suffix suffix - cish = cish_suffix suffix + exe_file = exeFileName dflags - -- for a .hc file we need to force lang to HscC - real_lang | start_phase == HCc || start_phase == Mangle = HscC - | otherwise = lang - - let - ----------- ----- ---- --- -- -- - - - - pipeline = preprocess ++ compile + -- 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) - preprocess - | haskellish = [ Unlit, Cpp, HsPp ] - | otherwise = [ ] + 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 - compile - | todo == DoMkDependHS = [ MkDependHS ] + debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file + <+> text "...") - | cish = [ Cc, As ] + -- 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 - | haskellish = - case real_lang of - HscC | split && mangle -> [ Hsc, HCc, Mangle, SplitMangle, SplitAs ] - | mangle -> [ Hsc, HCc, Mangle, As ] - | split -> not_valid - | otherwise -> [ Hsc, HCc, As ] + debugTraceMsg dflags 3 (text "link: done") - HscAsm | split -> [ Hsc, SplitMangle, SplitAs ] - | otherwise -> [ Hsc, As ] + -- staticLink only returns if it succeeds + return Succeeded - HscJava | split -> not_valid - | otherwise -> error "not implemented: compiling via Java" -#ifdef ILX - HscILX | split -> not_valid - | otherwise -> [ Hsc, Ilx2Il, Ilasm ] -#endif - HscNothing -> [ Hsc, HCc ] -- HCc is a dummy stop phase + | otherwise + = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$ + text " Main.main not exported; not linking.") + return Succeeded + - | otherwise = [ ] -- just pass this file through to the linker +-- ----------------------------------------------------------------------------- +-- Compile files in one-shot mode. - -- ToDo: this is somewhat cryptic - not_valid = throwDyn (UsageError ("invalid option combination")) +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 - stop_phase = case todo of - StopBefore As | split -> SplitAs -#ifdef ILX - | real_lang == HscILX -> Ilasm -#endif - StopBefore phase -> phase - DoMkDependHS -> Ln - DoLink -> Ln - DoMkDLL -> Ln - ----------- ----- ---- --- -- -- - - - - - -- this shouldn't happen. - when (start_phase /= Ln && start_phase `notElem` pipeline) - (throwDyn (CmdLineError ("can't find starting phase for " - ++ filename))) - -- if we can't find the phase we're supposed to stop before, - -- something has gone wrong. This test carefully avoids the - -- case where we aren't supposed to do any compilation, because the file - -- is already in linkable form (for example). --- hPutStrLn stderr (show ((start_phase `elem` pipeline,stop_phase /= Ln,stop_phase `notElem` pipeline), start_phase, stop_phase, pipeline,todo)) --- hFlush stderr - when (start_phase `elem` pipeline && - (stop_phase /= Ln && stop_phase `notElem` pipeline)) - (do - throwDyn (UsageError - ("flag `" ++ stop_flag - ++ "' is incompatible with source file `" - ++ filename ++ "'" ++ show pipeline ++ show stop_phase))) +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 - -- .o and .hc suffixes can be overriden by command-line options: - myPhaseInputExt Ln | Just s <- osuf = s - myPhaseInputExt HCc | Just s <- hcsuf = s - myPhaseInputExt other = phaseInputExt other - - annotatePipeline - :: [Phase] -- raw pipeline - -> Phase -- phase to stop before - -> [(Phase, IntermediateFileType, String{-file extension-})] - annotatePipeline [] _ = [] - annotatePipeline (Ln:_) _ = [] - annotatePipeline (phase:next_phase:ps) stop = - (phase, keep_this_output, myPhaseInputExt next_phase) - : annotatePipeline (next_phase:ps) stop - where - keep_this_output - | next_phase == stop - = if persistent_output then Persistent else Temporary - | otherwise - = case next_phase of - Ln -> Persistent - Mangle | keep_raw_s -> Persistent - As | keep_s -> Persistent - HCc | keep_hc -> Persistent -#ifdef ILX - Ilx2Il | keep_ilx -> Persistent - Ilasm | keep_il -> Persistent -#endif - _other -> Temporary + 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 = [] - -- add information about output files to the pipeline - -- the suffix on an output file is determined by the next phase - -- in the pipeline, so we add linking to the end of the pipeline - -- to force the output from the final phase to be a .o file. - annotated_pipeline = annotatePipeline (pipeline ++ [Ln]) stop_phase +-- --------------------------------------------------------------------------- +-- Run a compilation pipeline, consisting of multiple phases. - phase_ne p (p1,_,_) = (p1 /= p) - ----------- ----- ---- --- -- -- - - - +-- 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. - return ( - takeWhile (phase_ne stop_phase ) $ - dropWhile (phase_ne start_phase) $ - annotated_pipeline - ) +-- 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, IntermediateFileType, String) ] -- phases to run - -> (String,String) -- input file - -> Bool -- doing linking afterward? - -> Bool -- take into account -o when generating output? - -> IO (String, String) -- return final filename - -runPipeline pipeline (input_fn,suffix) do_linking use_ofile - = pipeLoop pipeline (input_fn,suffix) do_linking use_ofile basename suffix - where (basename, _) = splitFilename input_fn - -pipeLoop [] input_fn _ _ _ _ = return input_fn -pipeLoop (all_phases@((phase, keep, o_suffix):phases)) - (input_fn,real_suff) do_linking use_ofile orig_basename orig_suffix + :: 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 - output_fn <- outputFileName (null phases) keep o_suffix - - mbCarryOn <- run_phase phase orig_basename orig_suffix - input_fn output_fn - -- sometimes we bail out early, eg. when the compiler's recompilation - -- checker has determined that recompilation isn't necessary. - case mbCarryOn of - Nothing -> do - let (_,keep,final_suffix) = last all_phases - ofile <- outputFileName True keep final_suffix - return (ofile, final_suffix) - -- carry on ... - Just fn -> do - {- - Check to see whether we've reached the end of the - pipeline, but did so with an ineffective last stage. - (i.e., it returned the input_fn as the output filename). - - If we did and the output is persistent, copy the contents - of input_fn into the file where the pipeline's output is - expected to end up. - -} - atEnd <- finalStage (null phases) - when (atEnd && fn == input_fn) - (copy "Saving away compilation pipeline's output" - input_fn - output_fn) - {- - Notice that in order to keep the invariant that we can - determine a compilation pipeline's 'start phase' just - by looking at the input filename, the input filename - to the next stage/phase is associated here with the suffix - of the output file, *even* if it does not have that - suffix in reality. - - Why is this important? Because we may run a compilation - pipeline in stages (cf. Main.main.compileFile's two stages), - so when generating the next stage we need to be precise - about what kind of file (=> suffix) is given as input. - - [Not having to generate a pipeline in stages seems like - the right way to go, but I've punted on this for now --sof] - - -} - pipeLoop phases (fn, o_suffix) do_linking use_ofile - orig_basename orig_suffix - where - finalStage lastPhase = do - o_file <- readIORef v_Output_file - return (lastPhase && not do_linking && use_ofile && isJust o_file) - - outputFileName last_phase keep suffix - = do o_file <- readIORef v_Output_file - atEnd <- finalStage last_phase - if atEnd - then case o_file of - Just s -> return s - Nothing -> error "outputFileName" - else if keep == Persistent - then odir_ify (orig_basename ++ '.':suffix) - else newTempName suffix - -run_phase :: Phase - -> String -- basename of original input source - -> String -- its extension - -> FilePath -- name of file which contains the input to this phase. - -> FilePath -- where to stick the result. - -> IO (Maybe FilePath) - -- Nothing => stop the compilation pipeline - -- Just fn => the result of this phase can be found in 'fn' - -- (this can either be 'input_fn' or 'output_fn'). ------------------------------------------------------------------------------- -- Unlit phase -run_phase Unlit _basename _suff input_fn output_fn - = do unlit_flags <- getOpts opt_L +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 - SysTools.runUnlit (map SysTools.Option unlit_flags ++ + 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 (Just output_fn) + + return (Cpp sf, dflags, maybe_loc, output_fn) ------------------------------------------------------------------------------- --- Cpp phase +-- Cpp phase : (a) gets OPTIONS out of file +-- (b) runs cpp if necessary -run_phase Cpp basename suff input_fn output_fn +runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc = do src_opts <- getOptionsFromSource input_fn - unhandled_flags <- processArgs dynamic_flags src_opts [] - checkProcessArgsResult unhandled_flags basename suff + (dflags,unhandled_flags) <- parseDynamicFlags dflags0 src_opts + checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff) - do_cpp <- dynFlag cppFlag - if not do_cpp then + 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 (Just input_fn) + return (HsPp sf, dflags, maybe_loc, input_fn) else do - hscpp_opts <- getOpts opt_P - hs_src_cpp_opts <- readIORef v_Hs_source_cpp_opts - - cmdline_include_paths <- readIORef v_Include_paths - pkg_include_dirs <- getPackageIncludePath - let include_paths = foldr (\ x xs -> "-I" : x : xs) [] - (cmdline_include_paths ++ pkg_include_dirs) - - verb <- getVerbFlag - (md_c_flags, _) <- machdepCCOpts - - SysTools.runCpp ([SysTools.Option verb] - ++ map SysTools.Option include_paths - ++ map SysTools.Option hs_src_cpp_opts - ++ map SysTools.Option hscpp_opts - ++ map SysTools.Option md_c_flags - ++ [ 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 - ]) - return (Just output_fn) + 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 -run_phase HsPp basename suff input_fn output_fn - = do let orig_fn = basename ++ '.':suff - do_pp <- dynFlag ppFlag - if not do_pp then +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 (Just input_fn) + return (Hsc sf, dflags, maybe_loc, input_fn) else do - hspp_opts <- getOpts opt_F - hs_src_pp_opts <- readIORef v_Hs_source_pp_opts - SysTools.runPp ( [ SysTools.Option orig_fn + 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 hs_src_pp_opts ++ map SysTools.Option hspp_opts ) - return (Just output_fn) - ------------------------------------------------------------------------------ --- MkDependHS phase - -run_phase MkDependHS basename suff input_fn output_fn - = do src <- readFile input_fn - let (import_sources, import_normals, _) = getImports src - let orig_fn = basename ++ '.':suff - deps_sources <- mapM (findDependency True orig_fn) import_sources - deps_normals <- mapM (findDependency False orig_fn) import_normals - let deps = deps_sources ++ deps_normals - - osuf_opt <- readIORef v_Object_suf - let osuf = case osuf_opt of - Nothing -> phaseInputExt Ln - Just s -> s - - extra_suffixes <- readIORef v_Dep_suffixes - let suffixes = osuf : map (++ ('_':osuf)) extra_suffixes - ofiles = map (\suf -> basename ++ '.':suf) suffixes - - objs <- mapM odir_ify ofiles - - -- Handle for file that accumulates dependencies - hdl <- readIORef v_Dep_tmp_hdl - - -- std dependency of the object(s) on the source file - hPutStrLn hdl (unwords (map escapeSpaces objs) ++ " : " ++ - escapeSpaces (basename ++ '.':suff)) - - let genDep (dep, False {- not an hi file -}) = - hPutStrLn hdl (unwords (map escapeSpaces objs) ++ " : " ++ - escapeSpaces dep) - genDep (dep, True {- is an hi file -}) = do - hisuf <- readIORef v_Hi_suf - let dep_base = remove_suffix '.' dep - deps = (dep_base ++ hisuf) - : map (\suf -> dep_base ++ suf ++ '_':hisuf) extra_suffixes - -- length objs should be == length deps - sequence_ (zipWith (\o d -> hPutStrLn hdl (escapeSpaces o ++ " : " ++ escapeSpaces d)) objs deps) - - sequence_ (map genDep [ d | Just d <- deps ]) - return (Just output_fn) - --- add the lines to dep_makefile: - -- always: - -- this.o : this.hs - - -- if the dependency is on something other than a .hi file: - -- this.o this.p_o ... : dep - -- otherwise - -- if the import is {-# SOURCE #-} - -- this.o this.p_o ... : dep.hi-boot[-$vers] - - -- else - -- this.o ... : dep.hi - -- this.p_o ... : dep.p_hi - -- ... - - -- (where .o is $osuf, and the other suffixes come from - -- the cmdline -s options). - + 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). -run_phase Hsc basename suff input_fn output_fn - = do - +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 = getdir basename + let current_dir = directoryOf basename - paths <- readIORef v_Include_paths - writeIORef v_Include_paths (current_dir : paths) + paths = includePaths dflags0 + dflags = dflags0 { includePaths = current_dir : paths } - -- figure out which header files to #include in a generated .hc file - c_includes <- getPackageCIncludes - cmdline_includes <- dynFlag cmdlineHcIncludes -- -#include options - - let cc_injects = unlines (map mk_include - (c_includes ++ reverse cmdline_includes)) - mk_include h_file = - case h_file of - '"':_{-"-} -> "#include "++h_file - '<':_ -> "#include "++h_file - _ -> "#include \""++h_file++"\"" - - writeIORef v_HCHeader cc_injects - -- gather the imports and module name - (srcimps,imps,mod_name) <- - if extcoreish_suffix suff - then do - -- no explicit imports in ExtCore input. - m <- getCoreModuleName input_fn - return ([], [], mkModuleName m) - else - getImportsFromFile input_fn - - -- build a ModLocation to pass to hscMain. - (mod, location') - <- mkHomeModuleLocn mod_name basename (basename ++ '.':suff) - - -- take -ohi into account if present - ohi <- readIORef v_Output_hi - let location | Just fn <- ohi = location'{ ml_hi_file = fn } - | otherwise = location' - - -- figure out if the source has changed, for recompilation avoidance. - -- only do this if we're eventually going to generate a .o file. - -- (ToDo: do when generating .hc files too?) + (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 = Just input_fn, + 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. - do_recomp <- readIORef v_Recomp - todo <- readIORef v_GhcMode - expl_o_file <- readIORef v_Output_file - - let o_file -- if the -o option is given and IT IS THE OBJECT FILE FOR - -- THIS COMPILATION, then use that to determine if the - -- source is unchanged. - | Just x <- expl_o_file, todo == StopBefore Ln = x - | otherwise = expectJust "source_unchanged" (ml_obj_file location) - + let do_recomp = dopt Opt_RecompChecking dflags source_unchanged <- - if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln )) - then return False - else do t1 <- getModificationTime (basename ++ '.':suff) - o_file_exists <- doesFileExist o_file + 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 > t1 + if t2 > src_timestamp then return True else return False -- get the DynFlags - dyn_flags <- getDynFlags + 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 dyn_flags' = dyn_flags { hscOutName = output_fn, - hscStubCOutName = basename ++ "_stub.c", - hscStubHOutName = basename ++ "_stub.h", - extCoreName = basename ++ ".hcr" } - hsc_env = HscEnv { hsc_mode = OneShot, - hsc_dflags = dyn_flags', - hsc_HPT = emptyHomePackageTable } - + 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! - pcs <- initPersistentCompilerState - result <- hscMain hsc_env pcs mod - location{ ml_hspp_file=Just input_fn } - source_unchanged - False - Nothing -- no iface + result <- hscMain hsc_env + mod_summary source_unchanged + False -- No object file + Nothing -- No iface + Nothing -- No "module i of n" progress info - case result of { + case result of - HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1)); + HscFail -> throwDyn (PhaseFailed "hsc" (ExitFailure 1)) - HscNoRecomp pcs details iface -> do { SysTools.touch "Touching object file" o_file - ; return Nothing } ; + HscNoRecomp details iface -> 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) - HscRecomp pcs details iface stub_h_exists stub_c_exists + HscRecomp _details _iface + stub_h_exists stub_c_exists _maybe_interpreted_code -> do - -- deal with stubs - maybe_stub_o <- compileStub dyn_flags' stub_c_exists - case maybe_stub_o of - Nothing -> return () - Just stub_o -> add v_Ld_inputs stub_o - case hscLang dyn_flags of - HscNothing -> return Nothing - _ -> return (Just output_fn) - } + when stub_c_exists $ 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 + case src_flavour of + HsBootFile -> SysTools.touch dflags' "Touching object file" o_file + other -> return () + + 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 @@ -864,92 +818,132 @@ run_phase Hsc basename suff input_fn output_fn -- 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. -run_phase cc_phase basename suff input_fn output_fn - | cc_phase == Cc || cc_phase == HCc - = do cc_opts <- getOpts opt_c - cmdline_include_paths <- readIORef v_Include_paths +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 - let hcc = cc_phase == HCc + -- 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 + -- 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) - mangle <- readIORef v_Do_asm_mangling - (md_c_flags, md_regd_c_flags) <- machdepCCOpts + let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags + let pic_c_flags = picCCOpts dflags - verb <- getVerbFlag + let verb = getVerbFlag dflags - o2 <- readIORef v_minus_o2_for_C - let opt_flag | o2 = "-O2" - | otherwise = "-O" + pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs - pkg_extra_cc_opts <- getPackageExtraCcOpts - - split_objs <- readIORef v_Split_object_files - let split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ] + let split_objs = dopt Opt_SplitObjs dflags + split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ] | otherwise = [ ] - excessPrecision <- readIORef v_Excess_precision + let excessPrecision = dopt Opt_ExcessPrecision dflags - -- force the C compiler to interpret this file as C when - -- compiling .hc files, by adding the -x c option. - let langopt - | cc_phase == HCc = [ SysTools.Option "-x", SysTools.Option "c"] - | otherwise = [ ] + let cc_opt | optLevel dflags >= 2 = "-O2" + | otherwise = "-O" - SysTools.runCc (langopt ++ + -- 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 - ++ (if cc_phase == HCc && mangle + ++ pic_c_flags + ++ (if hcc && mangle then md_regd_c_flags else []) - ++ [ verb, "-S", "-Wimplicit", opt_flag ] + ++ (if hcc + then more_hcc_opts + else []) + ++ [ verb, "-S", "-Wimplicit", cc_opt ] ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ] ++ cc_opts ++ split_opt - ++ (if excessPrecision then [] else [ "-ffloat-store" ]) ++ include_paths ++ pkg_extra_cc_opts )) - return (Just output_fn) + + return (next_phase, dflags, maybe_loc, output_fn) -- ToDo: postprocess the output from gcc ----------------------------------------------------------------------------- -- Mangle phase -run_phase Mangle _basename _suff input_fn output_fn - = do mangler_opts <- getOpts opt_m - machdep_opts <- if (prefixMatch "i386" cTARGETPLATFORM) - then do n_regs <- dynFlag stolen_x86_regs - return [ show n_regs ] - else return [] +runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc + = do let mangler_opts = getOpts dflags opt_m - SysTools.runMangle (map SysTools.Option mangler_opts +#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 (Just output_fn) + + return (next_phase, dflags, maybe_loc, output_fn) ----------------------------------------------------------------------------- -- Splitting phase -run_phase SplitMangle _basename _suff input_fn output_fn +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 "split" + split_s_prefix <- SysTools.newTempName dflags "split" let n_files_fn = split_s_prefix - SysTools.runSplit [ SysTools.FileOption "" input_fn + SysTools.runSplit dflags + [ SysTools.FileOption "" input_fn , SysTools.FileOption "" split_s_prefix , SysTools.FileOption "" n_files_fn ] @@ -963,78 +957,92 @@ run_phase SplitMangle _basename _suff input_fn output_fn addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s" | n <- [1..n_files]] - return (Just output_fn) + return (SplitAs, dflags, maybe_loc, "**splitmangle**") + -- we don't use the filename ----------------------------------------------------------------------------- -- As phase -run_phase As _basename _suff input_fn output_fn - = do as_opts <- getOpts opt_a - cmdline_include_paths <- readIORef v_Include_paths +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 (map SysTools.Option as_opts + 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 (Just output_fn) -run_phase SplitAs basename _suff _input_fn output_fn - = do as_opts <- getOpts opt_a + 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 - odir <- readIORef v_Output_dir - let real_odir = case odir of - Nothing -> basename ++ "_split" - Just d -> d + 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 - = do let input_s = split_s_prefix ++ "__" ++ show n ++ ".s" - let output_o = newdir real_odir - (basename ++ "__" ++ show n ++ ".o") - real_o <- osuf_ify output_o - SysTools.runAs (map SysTools.Option as_opts ++ - [ SysTools.Option "-c" - , SysTools.Option "-o" - , SysTools.FileOption "" real_o - , SysTools.FileOption "" input_s - ]) + = 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] - return (Just output_fn) -#ifdef ILX ------------------------------------------------------------------------------ --- Ilx2Il phase --- Run ilx2il over the ILX output, getting an IL file - -run_phase Ilx2Il _basename _suff input_fn output_fn - = do ilx2il_opts <- getOpts opt_I - SysTools.runIlx2il (map SysTools.Option ilx2il_opts - ++ [ SysTools.Option "--no-add-suffix-to-assembly", - SysTools.Option "mscorlib", - SysTools.Option "-o", - SysTools.FileOption "" output_fn, - SysTools.FileOption "" input_fn ]) - return (Just output_fn) - ------------------------------------------------------------------------------ --- Ilasm phase --- Run ilasm over the IL, getting a DLL + -- 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) -run_phase Ilasm _basename _suff input_fn output_fn - = do ilasm_opts <- getOpts opt_i - SysTools.runIlasm (map SysTools.Option ilasm_opts - ++ [ SysTools.Option "/QUIET", - SysTools.Option "/DLL", - SysTools.FileOption "/OUT=" output_fn, - SysTools.FileOption "" input_fn ]) - return (Just output_fn) - -#endif -- ILX ----------------------------------------------------------------------------- -- MoveBinary sort-of-phase @@ -1047,7 +1055,7 @@ run_phase Ilasm _basename _suff input_fn output_fn -- we don't need the generality of a phase (MoveBinary is always -- done after linking and makes only sense in a parallel setup) -- HWL -run_phase_MoveBinary input_fn +runPhase_MoveBinary input_fn = do sysMan <- getSysMan pvm_root <- getEnv "PVM_ROOT" @@ -1123,146 +1131,191 @@ mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $ ----------------------------------------------------------------------------- -- Complain about non-dynamic flags in OPTIONS pragmas -checkProcessArgsResult flags basename suff +checkProcessArgsResult flags filename = do when (notNull flags) (throwDyn (ProgramError ( - basename ++ "." ++ suff - ++ ": static flags are not allowed in {-# OPTIONS #-} pragmas:\n\t" - ++ unwords flags)) (ExitFailure 1)) + 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 -staticLink :: [String] -> IO () -staticLink o_files = do - verb <- getVerbFlag - static <- readIORef v_Static - no_hs_main <- readIORef v_NoHsMain +-- 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 - o_file <- readIORef v_Output_file - let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; } + -- 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 + pkg_lib_paths <- getPackageLibraryPath dflags dep_packages let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths - lib_paths <- readIORef v_Library_paths + let lib_paths = libraryPaths dflags let lib_path_opts = map ("-L"++) lib_paths - pkg_libs <- getPackageLibraries - let imp = if static then "" else "_imp" - pkg_lib_opts = map (\lib -> "-l" ++ lib ++ imp) pkg_libs - - libs <- readIORef v_Cmdline_libraries - let lib_opts = map ("-l"++) (reverse libs) - -- reverse because they're added in reverse order from the cmd line + pkg_link_opts <- getPackageLinkOpts dflags dep_packages #ifdef darwin_TARGET_OS - pkg_framework_paths <- getPackageFrameworkPath + pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths - framework_paths <- readIORef v_Framework_paths - let framework_path_opts = map ("-F"++) framework_paths - - pkg_frameworks <- getPackageFrameworks - let pkg_framework_opts = map ("-framework " ++) pkg_frameworks + let framework_paths = frameworkPaths dflags + framework_path_opts = map ("-F"++) framework_paths - frameworks <- readIORef v_Cmdline_frameworks - let framework_opts = map ("-framework "++) (reverse frameworks) + 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 - pkg_extra_ld_opts <- getPackageExtraLdOpts - -- probably _stub.o files extra_ld_inputs <- readIORef v_Ld_inputs - -- opts from -optl- - extra_ld_opts <- getStaticOpts v_Opt_l + -- opts from -optl- (including -l options) + let extra_ld_opts = getOpts dflags opt_l - [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, preludePackage] + let ways = wayNames dflags - let extra_os = if static || no_hs_main - then [] - else [ head (library_dirs rts_pkg) ++ "/Main.dll_o", - head (library_dirs std_pkg) ++ "/PrelMain.dll_o" ] + -- 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 = [] - (md_c_flags, _) <- machdepCCOpts - SysTools.runLink ( [ SysTools.Option verb + 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_os ++ extra_ld_inputs ++ lib_path_opts - ++ lib_opts + ++ extra_ld_opts #ifdef darwin_TARGET_OS ++ framework_path_opts ++ framework_opts #endif ++ pkg_lib_path_opts - ++ pkg_lib_opts + ++ pkg_link_opts #ifdef darwin_TARGET_OS ++ pkg_framework_path_opts ++ pkg_framework_opts #endif - ++ pkg_extra_ld_opts - ++ extra_ld_opts - ++ if static && not no_hs_main then - [ "-u", prefixUnderscore "Main_zdmain_closure"] - else [])) + ++ debug_opts + ++ thread_opts + )) -- parallel only: move binary to another dir -- HWL - ways_ <- readIORef v_Ways - when (WayPar `elem` ways_) - (do success <- run_phase_MoveBinary output_fn + 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 :: [String] -> IO () -doMkDLL o_files = do - verb <- getVerbFlag - static <- readIORef v_Static - no_hs_main <- readIORef v_NoHsMain - - o_file <- readIORef v_Output_file +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 + pkg_lib_paths <- getPackageLibraryPath dflags dep_packages let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths - lib_paths <- readIORef v_Library_paths + let lib_paths = libraryPaths dflags let lib_path_opts = map ("-L"++) lib_paths - pkg_libs <- getPackageLibraries - let imp = if static then "" else "_imp" - pkg_lib_opts = map (\lib -> "-l" ++ lib ++ imp) pkg_libs - - libs <- readIORef v_Cmdline_libraries - let lib_opts = map ("-l"++) (reverse libs) - -- reverse because they're added in reverse order from the cmd line - - pkg_extra_ld_opts <- getPackageExtraLdOpts + pkg_link_opts <- getPackageLinkOpts dflags dep_packages -- probably _stub.o files extra_ld_inputs <- readIORef v_Ld_inputs -- opts from -optdll- - extra_ld_opts <- getStaticOpts v_Opt_dll + let extra_ld_opts = getOpts dflags opt_dll - [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, stdPackage] + 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 (library_dirs rts_pkg) ++ "/Main.dll_o", - head (library_dirs std_pkg) ++ "/PrelMain.dll_o" ] + else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o", + head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ] - (md_c_flags, _) <- machdepCCOpts - SysTools.runMkDLL + let (md_c_flags, _) = machdepCCOpts dflags + SysTools.runMkDLL dflags ([ SysTools.Option verb , SysTools.Option "-o" , SysTools.FileOption "" output_fn @@ -1274,12 +1327,216 @@ doMkDLL o_files = do ++ [ "--target=i386-mingw32" ] ++ extra_ld_inputs ++ lib_path_opts - ++ lib_opts + ++ extra_ld_opts ++ pkg_lib_path_opts - ++ pkg_lib_opts - ++ pkg_extra_ld_opts + ++ pkg_link_opts ++ (if "--def" `elem` (concatMap words extra_ld_opts) then [ "" ] else [ "--export-all" ]) - ++ extra_ld_opts )) + +-- ----------------------------------------------------------------------------- +-- 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__" + ] + +----------------------------------------------------------------------------- +-- Reading OPTIONS pragmas + +-- This is really very ugly and should be rewritten. +-- - some error messages are thrown as exceptions (should return) +-- - we ignore LINE pragmas +-- - parsing is horrible, combination of prefixMatch and 'read'. + +getOptionsFromSource + :: String -- input file + -> IO [String] -- options, if any +getOptionsFromSource file + = do h <- openFile file ReadMode + look h 1 `finally` hClose h + where + look h i = do + r <- tryJust ioErrors (hGetLine h) + case r of + Left e | isEOFError e -> return [] + | otherwise -> ioError e + Right l' -> do + let l = removeSpaces l' + case () of + () | null l -> look h (i+1) + | prefixMatch "#" l -> look h (i+1) + | prefixMatch "{-# LINE" l -> look h (i+1) -- -} wrong! + | Just opts <- matchOptions i file l + -> do rest <- look h (i+1) + return (opts ++ rest) + | otherwise -> return [] + +getOptionsFromStringBuffer :: StringBuffer -> FilePath -> [(Int,String)] +getOptionsFromStringBuffer buffer@(StringBuffer _ len _) fn = + let + ls = lines (lexemeToString buffer len) -- lazy, so it's ok + in + look 1 ls + where + look i [] = [] + look i (l':ls) = do + let l = removeSpaces l' + case () of + () | null l -> look (i+1) ls + | prefixMatch "#" l -> look (i+1) ls + | prefixMatch "{-# LINE" l -> look (i+1) ls -- -} wrong! + | Just opts <- matchOptions i fn l + -> zip (repeat i) opts ++ look (i+1) ls + | otherwise -> [] + +-- detect {-# OPTIONS_GHC ... #-}. For the time being, we accept OPTIONS +-- instead of OPTIONS_GHC, but that is deprecated. +matchOptions i fn s + | Just s1 <- maybePrefixMatch "{-#" s -- -} + = matchOptions1 i fn (removeSpaces s1) + | otherwise + = Nothing + where + matchOptions1 i fn s + | Just s2 <- maybePrefixMatch "OPTIONS" s + = case () of + _ | Just s3 <- maybePrefixMatch "_GHC" s2, not (is_ident (head s3)) + -> matchOptions2 i fn s3 + | not (is_ident (head s2)) + -> matchOptions2 i fn s2 + | otherwise + -> Just [] -- OPTIONS_anything is ignored, not treated as start of source + | Just s2 <- maybePrefixMatch "INCLUDE" s, not (is_ident (head s2)), + Just s3 <- maybePrefixMatch "}-#" (reverse s2) + = Just ["-#include", removeSpaces (reverse s3)] + + | Just s2 <- maybePrefixMatch "LANGUAGE" s, not (is_ident (head s2)), + Just s3 <- maybePrefixMatch "}-#" (reverse s2) + = case [ exts | (exts,"") <- reads ('[' : reverse (']':s3))] of + [] -> languagePragParseError i fn + exts:_ -> case extensionsToGHCFlag exts of + ([], opts) -> Just opts + (unsup,_) -> unsupportedExtnError i fn unsup + | otherwise = Nothing + matchOptions2 i fn s + | Just s3 <- maybePrefixMatch "}-#" (reverse s) = Just (words (reverse s3)) + | otherwise = Nothing + + +languagePragParseError i fn = + pgmError (showSDoc (mkLocMessage loc ( + text "cannot parse LANGUAGE pragma"))) + where loc = srcLocSpan (mkSrcLoc (mkFastString fn) i 0) + +unsupportedExtnError i fn unsup = + pgmError (showSDoc (mkLocMessage loc ( + text "unsupported extensions: " <> + hcat (punctuate comma (map (text.show) unsup))))) + where loc = srcLocSpan (mkSrcLoc (mkFastString fn) i 0) + + +optionsErrorMsgs :: [String] -> [(Int,String)] -> FilePath -> Messages +optionsErrorMsgs unhandled_flags flags_lines filename + = (emptyBag, listToBag (map mkMsg unhandled_flags_lines)) + where + unhandled_flags_lines = [ (l,f) | f <- unhandled_flags, + (l,f') <- flags_lines, f == f' ] + mkMsg (line,flag) = + ErrUtils.mkPlainErrMsg (srcLocSpan loc) $ + text "unknown flag in {-# OPTIONS #-} pragma:" <+> text flag + where + loc = mkSrcLoc (mkFastString filename) line 0 + -- ToDo: we need a better SrcSpan here + +-- ----------------------------------------------------------------------------- +-- 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