X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FDriverPipeline.hs;h=cd11e0f361971c6e10f3ec76726bc64439e0dc87;hb=374bc02f5feb4f5bf709d0a04d15ce28ec71eef1;hp=b4e8722f5d5a76a38ee2e9a26bf863a03c608eb2;hpb=5b7cf08b9536041724146221aaf8e04236e57cb4;p=ghc-hetmet.git diff --git a/ghc/compiler/main/DriverPipeline.hs b/ghc/compiler/main/DriverPipeline.hs index b4e8722..cd11e0f 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 - runPipeline, 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 @@ -39,25 +39,33 @@ 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 @@ -66,16 +74,14 @@ import Maybe -- 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 - runPipeline (StopBefore Hsc) ("preprocess") - False{-temporary output file-} - Nothing{-no specific output file-} - filename - Nothing{-no ModLocation-} +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 @@ -87,143 +93,175 @@ 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) - - | CompErrs PersistentCompilerState -- Updated PCS + = CompOK ModDetails -- New details + ModIface -- New iface + (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable + | CompErrs -compile ghci_mode this_mod location - source_unchanged have_object - old_iface hpt pcs = do - dyn_flags <- restoreDynFlags -- Restore to the state of the last save +compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do - showPass dyn_flags - (showSDoc (text "Compiling" <+> ppr this_mod)) + let dflags0 = hsc_dflags hsc_env + this_mod = ms_mod mod_summary + src_flavour = ms_hsc_src mod_summary - let verb = verbosity dyn_flags - 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 + have_object + | Just l <- maybe_old_linkable, isObjectLinkable l = True + | otherwise = False - when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp)) + showPass dflags0 ("Compiling " ++ showModMsg have_object mod_summary) - opts <- getOptionsFromSource input_fnpp - processArgs dynamic_flags opts [] - dyn_flags <- getDynFlags + let location = ms_location mod_summary + let input_fn = expectJust "compile:hs" (ml_hs_file location) + 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 (basename, _) = splitFilename input_fn - - -- figure out what lang we're generating - hsc_lang <- hscMaybeAdjustLang (hscLang dyn_flags) - -- figure out what the next phase should be - next_phase <- hscNextPhase hsc_lang - -- figure out what file to generate the output into - get_output_fn <- genOutputFilenameFunc False Nothing next_phase basename - output_fn <- get_output_fn next_phase (Just location) - - let dyn_flags' = dyn_flags { hscLang = hsc_lang, + + -- 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, - hscStubCOutName = basename ++ "_stub.c", - hscStubHOutName = basename ++ "_stub.h", extCoreName = basename ++ ".hcr" } -- -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 + + let getStubLinkable False = return [] + getStubLinkable True + = do stub_o <- compileStub dflags' this_mod location + return [ DotO stub_o ] + + handleMake (HscNoRecomp, iface, details) + = ASSERT (isJust maybe_old_linkable) + return (CompOK details iface maybe_old_linkable) + handleMake (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 - hsc_result <- hscMain hsc_env pcs this_mod location - source_unchanged' have_object old_iface - - 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 ] - - (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 -#ifdef GHCI - Just comp_bc -> do tm <- getClockTime - return ([BCOs comp_bc], tm) -#endif - Nothing -> panic "compile: no interpreted code" - - -- we're in batch mode: finish the compilation pipeline. - _other -> do - let object_filename = ml_obj_file location - - runPipeline (StopBefore Ln) "" - True Nothing output_fn (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 mod_name - (hs_unlinked ++ stub_unlinked) - - return (CompOK pcs details iface (Just linkable)) + 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 + _other + -> runCompiler hscCompileMake handleMake ----------------------------------------------------------------------------- -- 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 - stub_o <- runPipeline (StopBefore Ln) "stub-compile" - True{-persistent output-} - Nothing{-no specific output file-} - stub_c - Nothing{-no ModLocation-} - 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 :: GhcMode -- interactive or batch -> DynFlags -- dynamic flags -> Bool -- attempt linking in batch mode? -> HomePackageTable -- what to link @@ -242,7 +280,10 @@ link Interactive dflags batch_attempt_linking hpt return Succeeded #endif -link Batch dflags batch_attempt_linking hpt +link JustTypecheck dflags batch_attempt_linking hpt + = return Succeeded + +link BatchCompile dflags batch_attempt_linking hpt | batch_attempt_linking = do let @@ -252,66 +293,148 @@ link Batch dflags batch_attempt_linking hpt pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos -- the linkables to link - linkables = map hm_linkable home_mod_infos + linkables = map (expectJust "link".hm_linkable) home_mod_infos - when (verb >= 3) $ do - hPutStrLn stderr "link: linkables are ..." - hPutStrLn stderr (showSDoc (vcat (map ppr linkables))) + debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables)) -- check for the -no-link flag - omit_linking <- readIORef v_NoLink - if omit_linking - then do when (verb >= 3) $ - hPutStrLn stderr "link(batch): linking omitted (-no-link flag given)." + if isNoLink (ghcLink dflags) + then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).") return Succeeded else do - when (verb >= 1) $ - hPutStrLn stderr "Linking ..." - let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us) obj_files = concatMap getOfiles linkables + exe_file = exeFileName dflags + + -- if the modification time on the executable is later than the + -- modification times on all of the objects, then omit linking + -- (unless the -no-recomp flag was given). + e_exe_time <- IO.try $ getModificationTime exe_file + let linking_needed + | Left _ <- e_exe_time = True + | Right t <- e_exe_time = + any (t <) (map linkableTime linkables) + + if dopt Opt_RecompChecking dflags && not linking_needed + then do debugTraceMsg dflags 1 (text exe_file <+> ptext SLIT("is up to date, linking not required.")) + return Succeeded + else do + + debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file + <+> text "...") + -- Don't showPass in Batch mode; doLink will do that for us. - staticLink obj_files pkg_deps + let link = case ghcLink dflags of + MkDLL -> doMkDLL + StaticLink -> staticLink + link dflags obj_files pkg_deps - when (verb >= 3) (hPutStrLn stderr "link: done") + debugTraceMsg dflags 3 (text "link: done") -- staticLink only returns if it succeeds return Succeeded | otherwise - = do when (verb >= 3) $ do - hPutStrLn stderr "link(batch): upsweep (partially) failed OR" - hPutStrLn stderr " Main.main not exported; not linking." + = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$ + text " Main.main not exported; not linking.") return Succeeded - where - verb = verbosity dflags + +-- ----------------------------------------------------------------------------- +-- 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 - :: GhcMode -- when to stop - -> String -- "stop after" flag - -> Bool -- final output is persistent? - -> Maybe FilePath -- where to put the output, optionally - -> FilePath -- input filename - -> Maybe ModLocation -- a ModLocation for this module, if we have one - -> IO FilePath -- output filename - -runPipeline todo stop_flag keep_output maybe_output_filename input_fn maybe_loc + :: 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 - split <- readIORef v_Split_object_files let (basename, suffix) = splitFilename input_fn - start_phase = startPhase suffix - stop_phase = case todo of - StopBefore As | split -> SplitAs - StopBefore phase -> phase - DoMkDependHS -> Ln - DoLink -> Ln - DoMkDLL -> Ln + -- 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 @@ -319,114 +442,113 @@ runPipeline todo stop_flag keep_output maybe_output_filename input_fn maybe_loc -- -- 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 - ("flag `" ++ stop_flag - ++ "' is incompatible with source file `" - ++ input_fn ++ "'")) + ("cannot compile this file to desired target: " + ++ input_fn)) - -- generate a function which will be used to calculate output file names - -- as we go along. - get_output_fn <- genOutputFilenameFunc keep_output maybe_output_filename - stop_phase basename + -- 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 - -- and execute the pipeline... - (output_fn, maybe_loc) <- - pipeLoop start_phase stop_phase input_fn basename suffix - get_output_fn maybe_loc + -- 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 + -- 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. - if keep_output - then do final_fn <- get_output_fn stop_phase maybe_loc - when (final_fn /= output_fn) $ - copy ("Copying `" ++ output_fn ++ "' to `" ++ final_fn + 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 final_fn - else - return output_fn + return (dflags', final_fn) + -pipeLoop :: Phase -> Phase -> FilePath -> String -> Suffix - -> (Phase -> Maybe ModLocation -> IO FilePath) - -> Maybe ModLocation -> IO (FilePath, Maybe ModLocation) +pipeLoop :: DynFlags -> Phase -> Phase + -> FilePath -> String -> Suffix + -> (Phase -> Maybe ModLocation -> IO FilePath) + -> Maybe ModLocation + -> IO (DynFlags, FilePath, Maybe ModLocation) -pipeLoop phase stop_phase input_fn orig_basename orig_suff - get_output_fn maybe_loc +pipeLoop dflags phase stop_phase + input_fn orig_basename orig_suff + orig_get_output_fn maybe_loc - | phase == stop_phase = return (input_fn, maybe_loc) -- all done + | phase `eqPhase` stop_phase -- All done + = return (dflags, input_fn, maybe_loc) - | not (phase `happensBefore` stop_phase) = + | 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 - maybe_next_phase <- runPhase phase orig_basename orig_suff input_fn - get_output_fn maybe_loc - case maybe_next_phase of - (Nothing, maybe_loc, output_fn) -> do - -- we stopped early, but return the *final* filename - -- (it presumably already exists) - final_fn <- get_output_fn stop_phase maybe_loc - return (final_fn, maybe_loc) - (Just next_phase, maybe_loc, output_fn) -> - pipeLoop next_phase stop_phase output_fn - orig_basename orig_suff get_output_fn maybe_loc - - -genOutputFilenameFunc :: Bool -> Maybe FilePath -> Phase -> String - -> IO (Phase{-next phase-} -> Maybe ModLocation -> IO FilePath) -genOutputFilenameFunc keep_output maybe_output_filename stop_phase basename - = do - hcsuf <- readIORef v_HC_suf - odir <- readIORef v_Output_dir - osuf <- readIORef v_Object_suf - 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 - let - myPhaseInputExt HCc | Just s <- hcsuf = s - myPhaseInputExt Ln = osuf - myPhaseInputExt other = phaseInputExt other + = 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 - | next_phase == stop_phase - = case maybe_output_filename of - Just file -> return file - Nothing - | Ln <- next_phase -> return odir_persistent - | keep_output -> return persistent - | otherwise -> newTempName suffix - -- sometimes, we keep output from intermediate stages - | otherwise - = case next_phase of - Ln -> return odir_persistent - Mangle | keep_raw_s -> return persistent - As | keep_s -> return persistent - HCc | keep_hc -> return persistent - _other -> newTempName suffix + | 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 = basename ++ '.':suffix + + -- 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 = replaceFilenameDirectory persistent d + | Just d <- odir = d `joinFileName` persistent | otherwise = persistent - return func - -- ----------------------------------------------------------------------------- -- Each phase in the pipeline returns the next phase to execute, and the @@ -438,220 +560,242 @@ genOutputFilenameFunc keep_output maybe_output_filename stop_phase basename -- 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 - -> 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) +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 (Maybe Phase, -- next phase - Maybe ModLocation, -- the ModLocation, if we have one - FilePath) -- 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 _basename _suff input_fn get_output_fn maybe_loc - = 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 - output_fn <- get_output_fn Cpp maybe_loc + output_fn <- get_output_fn (Cpp sf) maybe_loc - SysTools.runUnlit (map SysTools.Option unlit_flags ++ + 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 Cpp, maybe_loc, 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 -runPhase Cpp basename suff input_fn get_output_fn maybe_loc +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 HsPp, maybe_loc, 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 - - output_fn <- get_output_fn HsPp maybe_loc - - 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 HsPp, maybe_loc, 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 -runPhase HsPp basename suff input_fn get_output_fn maybe_loc - = do 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 Hsc, maybe_loc, 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 - let orig_fn = basename ++ '.':suff - output_fn <- get_output_fn Hsc maybe_loc - 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 Hsc, maybe_loc, output_fn) + 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 basename suff input_fn get_output_fn _maybe_loc = do - todo <- readIORef v_GhcMode - if todo == DoMkDependHS then do - locn <- doMkDependHSPhase basename suff input_fn - return (Nothing, Just locn, input_fn) -- Ln is a dummy stop phase - - else do - -- normal Hsc mode, not mkdependHS +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 <- readIORef v_Include_paths - writeIORef v_Include_paths (current_dir : paths) + paths = includePaths dflags0 + dflags = dflags0 { includePaths = current_dir : paths } -- gather the imports and module name - (_,_,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') <- mkHomeModLocation mod_name (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 - 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 = 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 - hsc_lang <- hscMaybeAdjustLang (hscLang dyn_flags) - next_phase <- hscNextPhase hsc_lang - output_fn <- get_output_fn next_phase (Just location) - - let dyn_flags' = dyn_flags { hscLang = hsc_lang, - 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 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! - pcs <- initPersistentCompilerState - result <- hscMain hsc_env pcs mod - location{ ml_hspp_file=Just input_fn } - source_unchanged - False - Nothing -- no iface + 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) - case result of +----------------------------------------------------------------------------- +-- Cmm phase - HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1)) +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 - HscNoRecomp pcs details iface -> do - SysTools.touch "Touching object file" o_file - return (Nothing, Just location, output_fn) + let dflags' = dflags { hscTarget = hsc_lang, + hscOutName = output_fn, + extCoreName = basename ++ ".hcr" } - HscRecomp _pcs _details _iface stub_h_exists stub_c_exists - _maybe_interpreted_code -> do + ok <- hscCmmFile dflags' input_fn - -- 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, Just location, output_fn) - _ -> return (Just next_phase, Just location, output_fn) + when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1)) + + return (next_phase, dflags, maybe_loc, output_fn) ----------------------------------------------------------------------------- -- Cc phase @@ -659,21 +803,12 @@ runPhase Hsc basename suff input_fn get_output_fn _maybe_loc = do -- 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 basename suff input_fn get_output_fn maybe_loc - | cc_phase == Cc || cc_phase == HCc - = do cc_opts <- getOpts opt_c - cmdline_include_paths <- readIORef v_Include_paths - - split <- readIORef v_Split_object_files - mangle <- readIORef v_Do_asm_mangling - - let hcc = cc_phase == HCc - - next_phase - | hcc && mangle = Mangle - | otherwise = As +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 - output_fn <- get_output_fn next_phase maybe_loc + let cmdline_include_paths = includePaths dflags -- HC files have the dependent packages stamped into them pkgs <- if hcc then getHCFilePackages input_fn else return [] @@ -681,90 +816,119 @@ runPhase cc_phase basename suff input_fn get_output_fn maybe_loc -- 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 pkgs + 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 - - verb <- getVerbFlag + let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags + let pic_c_flags = picCCOpts dflags - o2 <- readIORef v_minus_o2_for_C - let opt_flag | o2 = "-O2" - | otherwise = "-O" + let verb = getVerbFlag dflags - pkg_extra_cc_opts <- getPackageExtraCcOpts pkgs + pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs - 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 next_phase, maybe_loc, output_fn) + return (next_phase, dflags, maybe_loc, output_fn) -- ToDo: postprocess the output from gcc ----------------------------------------------------------------------------- -- Mangle phase -runPhase Mangle _basename _suff input_fn get_output_fn maybe_loc - = 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 - split <- readIORef v_Split_object_files - let next_phase +#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 (map SysTools.Option mangler_opts + SysTools.runMangle dflags (map SysTools.Option mangler_opts ++ [ SysTools.FileOption "" input_fn , SysTools.FileOption "" output_fn ] ++ map SysTools.Option machdep_opts) - return (Just next_phase, maybe_loc, output_fn) + return (next_phase, dflags, maybe_loc, output_fn) ----------------------------------------------------------------------------- -- Splitting phase -runPhase SplitMangle _basename _suff input_fn get_output_fn maybe_loc +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 ] @@ -778,23 +942,24 @@ runPhase SplitMangle _basename _suff input_fn get_output_fn maybe_loc addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s" | n <- [1..n_files]] - return (Just SplitAs, maybe_loc, "**splitmangle**") + return (SplitAs, dflags, maybe_loc, "**splitmangle**") -- we don't use the filename ----------------------------------------------------------------------------- -- As phase -runPhase As _basename _suff input_fn get_output_fn maybe_loc - = 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 Ln maybe_loc + 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 @@ -802,66 +967,67 @@ runPhase As _basename _suff input_fn get_output_fn maybe_loc , SysTools.FileOption "" output_fn ]) - return (Just Ln, maybe_loc, 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 -runPhase SplitAs basename _suff _input_fn get_output_fn maybe_loc - = do as_opts <- getOpts opt_a + 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 = replaceFilenameDirectory - (basename ++ "__" ++ show n ++ ".o") - real_odir - 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] - output_fn <- get_output_fn Ln maybe_loc - return (Just Ln, maybe_loc, output_fn) + -- 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) -#ifdef ILX ------------------------------------------------------------------------------ --- Ilx2Il phase --- Run ilx2il over the ILX output, getting an IL file - -runPhase Ilx2Il _basename _suff input_fn get_output_fn maybe_loc - = 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 True - ------------------------------------------------------------------------------ --- Ilasm phase --- Run ilasm over the IL, getting a DLL - -runPhase Ilasm _basename _suff input_fn get_output_fn maybe_loc - = 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 True - -#endif /* ILX */ ----------------------------------------------------------------------------- -- MoveBinary sort-of-phase @@ -950,9 +1116,9 @@ 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 ( - showSDoc (hang (text basename <> text ('.':suff) <> char ':') + showSDoc (hang (text filename <> char ':') 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+> hsep (map text flags))) ))) @@ -960,13 +1126,13 @@ checkProcessArgsResult flags basename suff ----------------------------------------------------------------------------- -- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file -getHCFilePackages :: FilePath -> IO [PackageName] +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 mkPackageName (words rest)) + return (map stringToPackageId (words rest)) _other -> return [] @@ -983,39 +1149,35 @@ getHCFilePackages filename = -- read any interface files), so the user must explicitly specify all -- the packages. -staticLink :: [FilePath] -> [PackageName] -> IO () -staticLink o_files dep_packages = do - verb <- getVerbFlag - static <- readIORef v_Static - no_hs_main <- readIORef v_NoHsMain +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. - o_file <- readIORef v_Output_file - let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; } - - pkg_lib_paths <- getPackageLibraryPath dep_packages + 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_link_opts <- getPackageLinkOpts dep_packages + pkg_link_opts <- getPackageLinkOpts dflags dep_packages #ifdef darwin_TARGET_OS - pkg_framework_paths <- getPackageFrameworkPath dep_packages + 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 + let framework_paths = frameworkPaths dflags + framework_path_opts = map ("-F"++) framework_paths - pkg_frameworks <- getPackageFrameworks dep_packages + pkg_frameworks <- getPackageFrameworks dflags dep_packages let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ] - - frameworks <- readIORef v_Cmdline_frameworks - let framework_opts = concat [ ["-framework", fw] | fw <- reverse 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 @@ -1023,24 +1185,41 @@ staticLink o_files dep_packages = do extra_ld_inputs <- readIORef v_Ld_inputs -- opts from -optl- (including -l options) - extra_ld_opts <- getStaticOpts v_Opt_l + let extra_ld_opts = getOpts dflags opt_l - [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, basePackage] + 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 = [] - (md_c_flags, _) <- machdepCCOpts - SysTools.runLink ( [ SysTools.Option verb + 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_os ++ extra_ld_inputs ++ lib_path_opts ++ extra_ld_opts @@ -1054,50 +1233,74 @@ staticLink o_files dep_packages = do ++ pkg_framework_path_opts ++ pkg_framework_opts #endif + ++ debug_opts + ++ thread_opts )) -- parallel only: move binary to another dir -- HWL - ways_ <- readIORef v_Ways - when (WayPar `elem` ways_) + 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] -> [PackageName] -> IO () -doMkDLL o_files dep_packages = 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 dep_packages + 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_link_opts <- getPackageLinkOpts dep_packages + 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, basePackage] + 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 @@ -1118,31 +1321,207 @@ doMkDLL o_files dep_packages = do )) -- ----------------------------------------------------------------------------- +-- 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 :: HscLang -> IO Phase -hscNextPhase hsc_lang = do - split <- readIORef v_Split_object_files - return (case hsc_lang of - HscC -> HCc - HscAsm | split -> SplitMangle - | otherwise -> As - HscNothing -> HCc -- dummy (no output will be generated) - HscInterpreted -> HCc -- "" "" - _other -> HCc -- "" "" - ) - -hscMaybeAdjustLang :: HscLang -> IO HscLang -hscMaybeAdjustLang current_hsc_lang = do - todo <- readIORef v_GhcMode - keep_hc <- readIORef v_Keep_hc_files - let 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 - | todo == StopBefore HCc || keep_hc = HscC - -- force -fvia-C when profiling or ticky-ticky is on - | opt_SccProfilingOn || opt_DoTickyProfiling = HscC - -- otherwise, stick to the plan - | otherwise = current_hsc_lang - return hsc_lang +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