-- 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
import DynFlags
import StaticFlags ( v_Ld_inputs, opt_Static, WayName(..) )
import Config
-import RdrName ( GlobalRdrEnv )
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 ( unLoc )
+import SrcLoc ( Located(..) )
import EXCEPTION
import DATA_IOREF ( readIORef, writeIORef, IORef )
import System
import IO
import Monad
+import Data.List ( isSuffixOf )
import Maybe
-- 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
| 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
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
-- 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)
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
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
- maybe_stub_o <- compileStub dflags' 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 -> 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 --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)
-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 StopLn dflags
- (stub_c,Nothing) Persistent 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
-- ---------------------------------------------------------------------------
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 ..." $$ vcat (map ppr linkables))
-- check for the -no-link flag
if isNoLink (ghcLink dflags)
- then do debugTraceMsg dflags 3 "link(batch): linking omitted (-c flag given)."
+ then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
return Succeeded
else do
- debugTraceMsg dflags 1 "Linking ..."
-
let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
obj_files = concatMap getOfiles linkables
+ exe_file = exeFileName dflags
+
+ -- if the modification time on the executable is later than the
+ -- modification times on all of the objects, then omit linking
+ -- (unless the -no-recomp flag was given).
+ e_exe_time <- IO.try $ getModificationTime exe_file
+ let linking_needed
+ | Left _ <- e_exe_time = True
+ | Right t <- e_exe_time =
+ any (t <) (map linkableTime linkables)
+
+ if dopt Opt_RecompChecking dflags && not linking_needed
+ then do debugTraceMsg dflags 1 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
+ return Succeeded
+ else do
+
+ debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
+ <+> text "...")
+
-- Don't showPass in Batch mode; doLink will do that for us.
- staticLink dflags obj_files pkg_deps
+ let link = case ghcLink dflags of
+ MkDLL -> doMkDLL
+ StaticLink -> staticLink
+ link dflags obj_files pkg_deps
- debugTraceMsg dflags 3 "link: done"
+ debugTraceMsg dflags 3 (text "link: done")
-- staticLink only returns if it succeeds
return Succeeded
| otherwise
- = do debugTraceMsg dflags 3 "link(batch): upsweep (partially) failed OR"
- debugTraceMsg dflags 3 " Main.main not exported; not linking."
+ = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
+ text " Main.main not exported; not linking.")
return Succeeded
= 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
odir_persistent
| Just loc <- maybe_location = ml_obj_file loc
- | Just d <- odir = replaceFilenameDirectory persistent d
+ | Just d <- odir = d `joinFileName` persistent
| otherwise = persistent
-- (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
; return (Nothing, mkModule m) }
other -> do { buf <- hGetStringBuffer input_fn
- ; (_,_,mod_name) <- getImports dflags buf input_fn
+ ; (_,_,L _ mod_name) <- getImports dflags buf input_fn
; return (Just buf, mod_name) }
-- Build a ModLocation to pass to hscMain.
-- 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,
let dflags' = dflags { hscTarget = hsc_lang,
hscOutName = output_fn,
- hscStubCOutName = basename ++ "_stub.c",
- hscStubHOutName = basename ++ "_stub.h",
extCoreName = basename ++ ".hcr" }
hsc_env <- newHscEnv dflags'
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
-
- -- Deal with stubs
- maybe_stub_o <- compileStub dflags' stub_c_exists
- case maybe_stub_o of
- Nothing -> return ()
- Just stub_o -> 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
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
let excessPrecision = dopt Opt_ExcessPrecision dflags
+ let cc_opt | optLevel dflags >= 2 = "-O2"
+ | otherwise = "-O"
+
-- Decide next phase
let mangle = dopt Opt_DoAsmMangling dflags
| 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.
++ (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
))
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
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.
- let o_file = outputFile dflags
-#if defined(mingw32_HOST_OS)
- let output_fn = case o_file of { Just s -> s; Nothing -> "main.exe"; }
-#else
- let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
-#endif
-
pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
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)
, "-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.
projects / ghc-hetmet.git / blobdiff