module DriverPipeline (
-- Run a series of compilation steps in a pipeline, for a
-- collection of source files.
- oneShot,
+ oneShot, compileFile,
-- Interfaces for the batch-mode driver
staticLink,
-- DLL building
doMkDLL,
- matchOptions, -- used in module GHC
+ getOptionsFromStringBuffer, -- used in module GHC
+ optionsErrorMsgs, -- ditto
) where
#include "HsVersions.h"
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 ( Located(..) )
-import ParserCoreUtils ( getCoreModuleName )
+import Distribution.Compiler ( extensionsToGHCFlag )
import EXCEPTION
import DATA_IOREF ( readIORef, writeIORef, IORef )
+import GLAEXTS ( Int(..) )
import Directory
import System
-- We return the augmented DynFlags, because they contain the result
-- of slurping in the OPTIONS pragmas
-preprocess :: DynFlags -> FilePath -> IO (DynFlags, FilePath)
-preprocess dflags filename =
- ASSERT2(isHaskellSrcFilename filename, text filename)
- runPipeline anyHsc dflags filename Temporary 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
-> ModSummary
-> Maybe Linkable -- Just linkable <=> source unchanged
-> Maybe ModIface -- Old interface, if available
+ -> Int -> Int
-> IO CompResult
data CompResult
| CompErrs
-compile hsc_env mod_summary maybe_old_linkable old_iface = do
+compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do
let dflags0 = hsc_dflags hsc_env
this_mod = ms_mod mod_summary
showPass dflags0 ("Compiling " ++ showModMsg have_object mod_summary)
- let verb = verbosity dflags0
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)
- when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
+ 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
- opts <- getOptionsFromSource input_fnpp
- (dflags1,unhandled_flags) <- parseDynamicFlags dflags0 opts
- checkProcessArgsResult unhandled_flags input_fn
+ 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
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
let do_recomp = dopt Opt_RecompChecking dflags
source_unchanged = isJust maybe_old_linkable && do_recomp
hsc_env' = hsc_env { hsc_dflags = dflags' }
+ object_filename = ml_obj_file location
-- run the compiler
- hsc_result <- hscMain hsc_env' printErrorsAndWarnings mod_summary
+ hsc_result <- hscMain hsc_env' mod_summary
source_unchanged have_object old_iface
+ (Just (mod_index, nmods))
case hsc_result of
HscFail -> return CompErrs
ASSERT(isJust maybe_old_linkable)
return (CompOK details iface maybe_old_linkable)
- HscRecomp details iface
- stub_h_exists stub_c_exists maybe_interpreted_code
+ HscRecomp details iface stub_h_exists stub_c_exists maybe_interpreted_code
| isHsBoot src_flavour -- No further compilation to do
- -> return (CompOK details iface Nothing)
+ -> do case hsc_lang of
+ HscInterpreted -> return ()
+ _other -> SysTools.touch dflags' "Touching object file"
+ object_filename
+ return (CompOK details iface Nothing)
- | otherwise -- Normal Haskell source files
+ | otherwise -- Normal source file
-> do
- let
- maybe_stub_o <- compileStub dflags' stub_c_exists
- let stub_unlinked = case maybe_stub_o of
- Nothing -> []
- Just stub_o -> [ DotO stub_o ]
+ stub_unlinked <-
+ if stub_c_exists then do
+ stub_o <- compileStub dflags' this_mod location
+ return [ DotO stub_o ]
+ else
+ return []
(hs_unlinked, unlinked_time) <-
case hsc_lang of
-- in interpreted mode, just return the compiled code
-- as our "unlinked" object.
- HscInterpreted ->
- case maybe_interpreted_code of
+ HscInterpreted
+ -> case maybe_interpreted_code of
#ifdef GHCI
Just comp_bc -> return ([BCOs comp_bc], ms_hs_date mod_summary)
-- Why do we use the timestamp of the source file here,
#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
+ HscNothing
+ -> return ([], ms_hs_date mod_summary)
- runPipeline StopLn dflags output_fn Persistent
- (Just location)
- -- the object filename comes from the ModLocation
+ -- 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)
+ o_time <- getModificationTime object_filename
+ return ([DotO object_filename], o_time)
let linkable = LM unlinked_time this_mod
(hs_unlinked ++ stub_unlinked)
-----------------------------------------------------------------------------
-- 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 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
-- ---------------------------------------------------------------------------
return Succeeded
#endif
+link JustTypecheck dflags batch_attempt_linking hpt
+ = return Succeeded
+
link BatchCompile dflags batch_attempt_linking hpt
| batch_attempt_linking
= do
-- the linkables to link
linkables = map (fromJust.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 ..." $$ vcat (map ppr linkables))
-- check for the -no-link flag
if isNoLink (ghcLink dflags)
- then do when (verb >= 3) $
- hPutStrLn stderr "link(batch): linking omitted (-c flag given)."
+ then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
return Succeeded
else do
- when (verb >= 1) $
- hPutStrLn stderr "Linking ..."
-
let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
obj_files = concatMap getOfiles linkables
+ exe_file = exeFileName dflags
+
+ -- if the modification time on the executable is later than the
+ -- modification times on all of the objects, then omit linking
+ -- (unless the -no-recomp flag was given).
+ e_exe_time <- IO.try $ getModificationTime exe_file
+ let linking_needed
+ | Left _ <- e_exe_time = True
+ | Right t <- e_exe_time =
+ any (t <) (map linkableTime linkables)
+
+ if dopt Opt_RecompChecking dflags && not linking_needed
+ then do debugTraceMsg dflags 1 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
+ return Succeeded
+ else do
+
+ debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
+ <+> text "...")
+
-- Don't showPass in Batch mode; doLink will do that for us.
- staticLink dflags obj_files pkg_deps
+ let link = case ghcLink dflags of
+ MkDLL -> doMkDLL
+ StaticLink -> staticLink
+ link dflags obj_files pkg_deps
- when (verb >= 3) (hPutStrLn stderr "link: done")
+ debugTraceMsg dflags 3 (text "link: done")
-- staticLink only returns if it succeeds
return Succeeded
| otherwise
- = do when (verb >= 3) $ do
- hPutStrLn stderr "link(batch): upsweep (partially) failed OR"
- hPutStrLn stderr " Main.main not exported; not linking."
+ = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
+ text " Main.main not exported; not linking.")
return Succeeded
- where
- verb = verbosity dflags
-- -----------------------------------------------------------------------------
-- Compile files in one-shot mode.
-oneShot :: DynFlags -> Phase -> [String] -> IO ()
+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 -> IO FilePath
-compileFile dflags stop_phase src = do
+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))
other -> stop_phase
(_, out_file) <- runPipeline stop_phase' dflags
- src output Nothing{-no ModLocation-}
+ (src, mb_phase) output Nothing{-no ModLocation-}
return out_file
-- the output must go into the specified file.
runPipeline
- :: Phase -- When to stop
- -> DynFlags -- Dynamic flags
- -> FilePath -- Input filename
- -> PipelineOutput -- Output filename
- -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
+ :: 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 output maybe_loc
+runPipeline stop_phase dflags (input_fn, mb_phase) output maybe_loc
= do
let (basename, suffix) = splitFilename input_fn
- start_phase = startPhase suffix
+
+ -- 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
= 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
| StopLn <- next_phase = return odir_persistent
| otherwise = return persistent
- persistent = basename ++ '.':suffix
+ 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
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
- checkProcessArgsResult unhandled_flags (basename++'.':suff)
+ checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff)
if not (dopt Opt_Cpp dflags) then
-- no need to preprocess CPP, just pass input file along
return (Hsc sf, dflags, maybe_loc, input_fn)
else do
let hspp_opts = getOpts dflags opt_F
- let orig_fn = basename ++ '.':suff
+ let orig_fn = basename `joinFileExt` suff
output_fn <- get_output_fn (Hsc sf) maybe_loc
SysTools.runPp dflags
( [ SysTools.Option orig_fn
; 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.
| otherwise = location3
-- Make the ModSummary to hand to hscMain
- src_timestamp <- getModificationTime (basename ++ '.':suff)
+ src_timestamp <- getModificationTime (basename `joinFileExt` suff)
let
unused_field = panic "runPhase:ModSummary field"
-- Some fields are not looked at by hscMain
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
+ result <- hscMain hsc_env
mod_summary source_unchanged
False -- No object file
Nothing -- No iface
+ Nothing -- No "module i of n" progress info
case result of
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
+ when stub_c_exists $ do
+ stub_o <- compileStub dflags' mod_name location4
+ consIORef v_Ld_inputs stub_o
-- In the case of hs-boot files, generate a dummy .o-boot
-- stamp file for the benefit of Make
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
- -- force the C compiler to interpret this file as C when
- -- compiling .hc files, by adding the -x c option.
- let langopt | hcc = [ SysTools.Option "-x", SysTools.Option "c"]
- | otherwise = [ ]
+ 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 (langopt ++
+ 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
++ (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
))
(split_s_prefix, n) <- readIORef v_Split_info
let real_odir
- | Just d <- outputDir dflags = d
+ | Just d <- objectDir dflags = d
| otherwise = basename ++ "_split"
let assemble_file n
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)
-----------------------------------------------------------------------------
-- 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 `finally` hClose h
+ look h 1 `finally` hClose h
where
- look h = do
+ look h i = do
r <- tryJust ioErrors (hGetLine h)
case r of
Left e | isEOFError e -> return []
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
+ () | 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 s
+matchOptions i fn s
| Just s1 <- maybePrefixMatch "{-#" s -- -}
- = matchOptions1 (removeSpaces s1)
+ = matchOptions1 i fn (removeSpaces s1)
| otherwise
= Nothing
where
- matchOptions1 s
+ matchOptions1 i fn s
| Just s2 <- maybePrefixMatch "OPTIONS" s
= case () of
_ | Just s3 <- maybePrefixMatch "_GHC" s2, not (is_ident (head s3))
- -> matchOptions2 s3
+ -> matchOptions2 i fn s3
| not (is_ident (head s2))
- -> matchOptions2 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 s
+ 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.
projects / ghc-hetmet.git / blobdiff