X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=ghc%2Fcompiler%2Fmain%2FDriverPipeline.hs;h=ac98eff593286c194f2d4e055d90b6e9797adeea;hb=3eacdc7faf0d0e87a7201253f9f12c1fb4db7249;hp=025a09bff2264fa78341c52f4fb58259ca5a5c51;hpb=4d5a0088afa8432d405ed4a15d6308e631b67379;p=ghc-hetmet.git diff --git a/ghc/compiler/main/DriverPipeline.hs b/ghc/compiler/main/DriverPipeline.hs index 025a09b..ac98eff 100644 --- a/ghc/compiler/main/DriverPipeline.hs +++ b/ghc/compiler/main/DriverPipeline.hs @@ -22,14 +22,12 @@ module DriverPipeline ( -- DLL building doMkDLL, - getOptionsFromStringBuffer, -- used in module GHC - optionsErrorMsgs, -- ditto ) where #include "HsVersions.h" import Packages -import GetImports +import HeaderInfo import DriverPhases import SysTools ( newTempName, addFilesToClean, getSysMan, copy ) import qualified SysTools @@ -47,12 +45,8 @@ 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 ( unLoc ) import SrcLoc ( Located(..) ) import EXCEPTION @@ -63,6 +57,7 @@ import Directory import System import IO import Monad +import Data.List ( isSuffixOf ) import Maybe @@ -93,7 +88,6 @@ preprocess dflags (filename, mb_phase) = -- NB. No old interface can also mean that the source has changed. compile :: HscEnv - -> (Messages -> IO ()) -- error message callback -> ModSummary -> Maybe Linkable -- Just linkable <=> source unchanged -> Maybe ModIface -- Old interface, if available @@ -108,9 +102,9 @@ data CompResult | CompErrs -compile hsc_env msg_act mod_summary maybe_old_linkable old_iface mod_index nmods = do +compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do - let dflags0 = hsc_dflags hsc_env + let dflags0 = ms_hspp_opts mod_summary this_mod = ms_mod mod_summary src_flavour = ms_hsc_src mod_summary @@ -122,20 +116,9 @@ compile hsc_env msg_act mod_summary maybe_old_linkable old_iface mod_index nmods 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 ("compile: input file " ++ 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 - (dflags1,unhandled_flags) <- parseDynamicFlags dflags0 (map snd opts) - if (not (null unhandled_flags)) - then do msg_act (optionsErrorMsgs unhandled_flags opts input_fn) - return CompErrs - else do + let input_fnpp = ms_hspp_file mod_summary + + debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp) let (basename, _) = splitFilename input_fn @@ -143,8 +126,8 @@ compile hsc_env msg_act mod_summary maybe_old_linkable old_iface mod_index nmods -- 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 } + old_paths = includePaths dflags0 + dflags = dflags0 { includePaths = current_dir : old_paths } -- Figure out what lang we're generating let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags) @@ -156,8 +139,6 @@ compile hsc_env msg_act mod_summary maybe_old_linkable old_iface mod_index nmods 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 @@ -166,76 +147,74 @@ compile hsc_env msg_act mod_summary maybe_old_linkable old_iface mod_index nmods hsc_env' = hsc_env { hsc_dflags = dflags' } object_filename = ml_obj_file location + let getStubLinkable False = return [] + getStubLinkable True + = do stub_o <- compileStub dflags' this_mod location + return [ DotO stub_o ] + + handleBatch (HscNoRecomp, iface, details) + = ASSERT (isJust maybe_old_linkable) + return (CompOK details iface maybe_old_linkable) + handleBatch (HscRecomp hasStub, iface, details) + | isHsBoot src_flavour + = return (CompOK details iface Nothing) + | otherwise + = do stub_unlinked <- getStubLinkable hasStub + (hs_unlinked, unlinked_time) <- + case hsc_lang of + HscNothing + -> return ([], ms_hs_date mod_summary) + -- We're in --make mode: finish the compilation pipeline. + _other + -> do runPipeline StopLn dflags (output_fn,Nothing) Persistent + (Just location) + -- The object filename comes from the ModLocation + o_time <- getModificationTime object_filename + return ([DotO object_filename], o_time) + let linkable = LM unlinked_time this_mod + (hs_unlinked ++ stub_unlinked) + return (CompOK details iface (Just linkable)) + + handleInterpreted (InteractiveNoRecomp, iface, details) + = ASSERT (isJust maybe_old_linkable) + return (CompOK details iface maybe_old_linkable) + handleInterpreted (InteractiveRecomp hasStub comp_bc, iface, details) + = do stub_unlinked <- getStubLinkable hasStub + let hs_unlinked = [BCOs comp_bc] + unlinked_time = ms_hs_date mod_summary + -- Why do we use the timestamp of the source file here, + -- rather than the current time? This works better in + -- the case where the local clock is out of sync + -- with the filesystem's clock. It's just as accurate: + -- if the source is modified, then the linkable will + -- be out of date. + let linkable = LM unlinked_time this_mod + (hs_unlinked ++ stub_unlinked) + return (CompOK details iface (Just linkable)) + + let runCompiler compiler handle + = do mbResult <- compiler hsc_env' mod_summary + source_unchanged old_iface + (Just (mod_index, nmods)) + case mbResult of + Nothing -> return CompErrs + Just result -> handle result -- run the compiler - hsc_result <- hscMain hsc_env' msg_act mod_summary - source_unchanged have_object old_iface - (Just (mod_index, nmods)) - - case hsc_result of - 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' object_filename - 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 -#ifdef GHCI - 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" - - 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)) + case hsc_lang of + HscInterpreted | not (isHsBoot src_flavour) -- We can't compile boot files to + -- bytecode so don't even try. + -> runCompiler hscCompileInteractive handleInterpreted + HscNothing + -> runCompiler hscCompileNothing handleBatch + _other + -> runCompiler hscCompileBatch handleBatch ----------------------------------------------------------------------------- -- stub .h and .c files (for foreign export support) --- The _stub.c file is derived from the haskell source file (but stored --- in hscStubCOutName in the dflags for some reason, probably historical). +-- 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. -- @@ -249,12 +228,13 @@ compile hsc_env msg_act mod_summary maybe_old_linkable old_iface mod_index nmods -- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want -- obj/A_stub.o. -compileStub dflags object_filename = do - let (o_base, o_ext) = splitFilename object_filename +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 + let (stub_c,_) = mkStubPaths dflags mod location runPipeline StopLn dflags (stub_c,Nothing) (SpecificFile stub_o) Nothing{-no ModLocation-} @@ -296,14 +276,13 @@ link BatchCompile dflags batch_attempt_linking hpt pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos -- the linkables to link - linkables = map (fromJust.hm_linkable) home_mod_infos + linkables = map (expectJust "link".hm_linkable) home_mod_infos - debugTraceMsg dflags 3 "link: linkables are ..." - debugTraceMsg dflags 3 (showSDoc (vcat (map ppr linkables))) + debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables)) -- check for the -no-link flag if isNoLink (ghcLink dflags) - then do debugTraceMsg dflags 3 "link(batch): linking omitted (-c flag given)." + then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).") return Succeeded else do @@ -322,23 +301,27 @@ link BatchCompile dflags batch_attempt_linking hpt any (t <) (map linkableTime linkables) if dopt Opt_RecompChecking dflags && not linking_needed - then do debugTraceMsg dflags 1 (exe_file ++ " is up to date, linking not required.") + then do debugTraceMsg dflags 1 (text exe_file <+> ptext SLIT("is up to date, linking not required.")) return Succeeded else do - debugTraceMsg dflags 1 "Linking ..." + debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file + <+> text "...") -- Don't showPass in Batch mode; doLink will do that for us. - staticLink dflags obj_files pkg_deps + let link = case ghcLink dflags of + MkDLL -> doMkDLL + StaticLink -> staticLink + link dflags obj_files pkg_deps - debugTraceMsg dflags 3 "link: done" + debugTraceMsg dflags 3 (text "link: done") -- staticLink only returns if it succeeds return Succeeded | otherwise - = do debugTraceMsg dflags 3 "link(batch): upsweep (partially) failed OR" - debugTraceMsg dflags 3 " Main.main not exported; not linking." + = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$ + text " Main.main not exported; not linking.") return Succeeded @@ -508,7 +491,7 @@ getOutputFilename dflags stop_phase output basename = func where hcsuf = hcSuf dflags - odir = outputDir dflags + odir = objectDir dflags osuf = objectSuf dflags keep_hc = dopt Opt_KeepHcFiles dflags keep_raw_s = dopt Opt_KeepRawSFiles dflags @@ -601,8 +584,8 @@ runPhase (Unlit sf) _stop dflags _basename _suff input_fn get_output_fn maybe_lo -- (b) runs cpp if necessary runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc - = do src_opts <- getOptionsFromSource input_fn - (dflags,unhandled_flags) <- parseDynamicFlags dflags0 src_opts + = do src_opts <- getOptionsFromFile input_fn + (dflags,unhandled_flags) <- parseDynamicFlags dflags0 (map unLoc src_opts) checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff) if not (dopt Opt_Cpp dflags) then @@ -700,7 +683,8 @@ runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _ma -- 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_file = input_fn, + ms_hspp_opts = dflags, ms_hspp_buf = hspp_buf, ms_location = location4, ms_hs_date = src_timestamp, @@ -741,8 +725,6 @@ runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _ma let dflags' = dflags { hscTarget = hsc_lang, hscOutName = output_fn, - hscStubCOutName = basename ++ "_stub.c", - hscStubHOutName = basename ++ "_stub.h", extCoreName = basename ++ ".hcr" } hsc_env <- newHscEnv dflags' @@ -751,38 +733,28 @@ runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _ma addHomeModuleToFinder hsc_env mod_name location4 -- run the compiler! - result <- hscMain hsc_env printErrorsAndWarnings + mbResult <- hscCompileOneShot hsc_env mod_summary source_unchanged - False -- No object file Nothing -- No iface Nothing -- No "module i of n" progress info - case result of - - HscFail -> throwDyn (PhaseFailed "hsc" (ExitFailure 1)) - - 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 _details _iface - stub_h_exists stub_c_exists - _maybe_interpreted_code -> do - - when stub_c_exists $ do - stub_o <- compileStub dflags' o_file - 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) + case mbResult of + Nothing -> throwDyn (PhaseFailed "hsc" (ExitFailure 1)) + Just HscNoRecomp + -> do SysTools.touch dflags' "Touching object file" o_file + -- The .o file must have a later modification date + -- than the source file (else we wouldn't be in HscNoRecomp) + -- but we touch it anyway, to keep 'make' happy (we think). + return (StopLn, dflags', Just location4, o_file) + Just (HscRecomp hasStub) + -> do when hasStub $ + do stub_o <- compileStub dflags' mod_name location4 + consIORef v_Ld_inputs stub_o + -- In the case of hs-boot files, generate a dummy .o-boot + -- stamp file for the benefit of Make + when (isHsBoot src_flavour) $ + SysTools.touch dflags' "Touching object file" o_file + return (next_phase, dflags', Just location4, output_fn) ----------------------------------------------------------------------------- -- Cmm phase @@ -801,8 +773,6 @@ runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc let dflags' = dflags { hscTarget = hsc_lang, hscOutName = output_fn, - hscStubCOutName = basename ++ "_stub.c", - hscStubHOutName = basename ++ "_stub.h", extCoreName = basename ++ ".hcr" } ok <- hscCmmFile dflags' input_fn @@ -847,6 +817,9 @@ runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc let excessPrecision = dopt Opt_ExcessPrecision dflags + let cc_opt | optLevel dflags >= 2 = "-O2" + | otherwise = "-O" + -- Decide next phase let mangle = dopt Opt_DoAsmMangling dflags @@ -855,6 +828,23 @@ runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc | 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. @@ -871,11 +861,13 @@ runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc ++ (if hcc && mangle then md_regd_c_flags else []) - ++ [ verb, "-S", "-Wimplicit", "-O" ] + ++ (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 )) @@ -963,34 +955,64 @@ runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc - = do let as_opts = getOpts dflags opt_a + = do + output_fn <- get_output_fn StopLn maybe_loc + + let (base_o, _) = splitFilename output_fn + split_odir = base_o ++ "_split" + osuf = objectSuf dflags + + createDirectoryHierarchy split_odir + + -- remove M_split/ *.o, because we're going to archive M_split/ *.o + -- later and we don't want to pick up any old objects. + fs <- getDirectoryContents split_odir + mapM_ removeFile $ map (split_odir `joinFileName`) + $ filter (osuf `isSuffixOf`) fs + + let as_opts = getOpts dflags opt_a (split_s_prefix, n) <- readIORef v_Split_info - let real_odir - | Just d <- outputDir dflags = d - | otherwise = basename ++ "_split" + 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 - let osuf = objectSuf dflags - let real_o = replaceFilenameSuffix output_o osuf - SysTools.runAs dflags - (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 StopLn maybe_loc + -- and join the split objects into a single object file: + let ld_r args = SysTools.runLink dflags ([ + SysTools.Option "-nostdlib", + SysTools.Option "-nodefaultlibs", + SysTools.Option "-Wl,-r", + SysTools.Option ld_x_flag, + SysTools.Option "-o", + SysTools.FileOption "" output_fn ] ++ args) + ld_x_flag | null cLD_X = "" + | otherwise = "-Wl,-x" + + if cLdIsGNULd == "YES" + then do + let script = split_odir `joinFileName` "ld.script" + writeFile script $ + "INPUT(" ++ unwords (map split_obj [1..n]) ++ ")" + ld_r [SysTools.FileOption "" script] + else do + ld_r (map (SysTools.FileOption "" . split_obj) [1..n]) + return (StopLn, dflags, maybe_loc, output_fn) + ----------------------------------------------------------------------------- -- MoveBinary sort-of-phase -- After having produced a binary, move it somewhere else and generate a @@ -1208,7 +1230,14 @@ staticLink dflags o_files dep_packages = do exeFileName :: DynFlags -> FilePath exeFileName dflags - | Just s <- outputFile dflags = s + | 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" @@ -1338,88 +1367,6 @@ hsSourceCppOpts = , "-D__CONCURRENT_HASKELL__" ] ------------------------------------------------------------------------------ --- Reading OPTIONS pragmas - -getOptionsFromSource - :: String -- input file - -> IO [String] -- options, if any -getOptionsFromSource file - = do h <- openFile file ReadMode - look h `finally` hClose h - where - look h = 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 - | prefixMatch "#" l -> look h - | prefixMatch "{-# LINE" l -> look h -- -} - | Just opts <- matchOptions l - -> do rest <- look h - return (opts ++ rest) - | otherwise -> return [] - -getOptionsFromStringBuffer :: StringBuffer -> [(Int,String)] -getOptionsFromStringBuffer buffer@(StringBuffer _ len# _) = - let - ls = lines (lexemeToString buffer (I# 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 -- -} - | Just opts <- matchOptions 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 s - | Just s1 <- maybePrefixMatch "{-#" s -- -} - = matchOptions1 (removeSpaces s1) - | otherwise - = Nothing - where - matchOptions1 s - | Just s2 <- maybePrefixMatch "OPTIONS" s - = case () of - _ | Just s3 <- maybePrefixMatch "_GHC" s2, not (is_ident (head s3)) - -> matchOptions2 s3 - | not (is_ident (head s2)) - -> matchOptions2 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)] - | otherwise = Nothing - matchOptions2 s - | Just s3 <- maybePrefixMatch "}-#" (reverse s) = Just (words (reverse s3)) - | otherwise = Nothing - - -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.