import Bag ( listToBag, emptyBag )
import SrcLoc ( Located(..) )
+import Distribution.Compiler ( extensionsToGHCFlag )
+
import EXCEPTION
import DATA_IOREF ( readIORef, writeIORef, IORef )
import GLAEXTS ( Int(..) )
-- 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
this_mod = ms_mod 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)
+ 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
+ opts = getOptionsFromStringBuffer hspp_buf input_fn
(dflags1,unhandled_flags) <- parseDynamicFlags dflags0 (map snd opts)
if (not (null unhandled_flags))
- then do msg_act (optionsErrorMsgs unhandled_flags opts input_fn)
+ then do printErrorsAndWarnings dflags1 (optionsErrorMsgs unhandled_flags opts input_fn)
return CompErrs
else do
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
object_filename = ml_obj_file location
-- run the compiler
- hsc_result <- hscMain hsc_env' msg_act mod_summary
+ hsc_result <- hscMain hsc_env' mod_summary
source_unchanged have_object old_iface
(Just (mod_index, nmods))
| 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 ]
+ 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
-----------------------------------------------------------------------------
-- 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
-- ---------------------------------------------------------------------------
-- the linkables to link
linkables = map (fromJust.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
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
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
+ 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
))
(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 -> [(Int,String)]
-getOptionsFromStringBuffer buffer@(StringBuffer _ len# _) =
+getOptionsFromStringBuffer :: StringBuffer -> FilePath -> [(Int,String)]
+getOptionsFromStringBuffer buffer@(StringBuffer _ len _) fn =
let
- ls = lines (lexemeToString buffer (I# len#)) -- lazy, so it's ok
+ ls = lines (lexemeToString buffer len) -- lazy, so it's ok
in
look 1 ls
where
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
+ | 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))
projects / ghc-hetmet.git / blobdiff