+{-# OPTIONS -fno-cse #-}
+{-# LANGUAGE NamedFieldPuns #-}
+-- -fno-cse is needed for GLOBAL_VAR's to behave properly
+
-----------------------------------------------------------------------------
--
-- GHC Driver
-----------------------------------------------------------------------------
module DriverPipeline (
- -- Run a series of compilation steps in a pipeline, for a
- -- collection of source files.
+ -- Run a series of compilation steps in a pipeline, for a
+ -- collection of source files.
oneShot, compileFile,
- -- Interfaces for the batch-mode driver
- staticLink,
-
- -- Interfaces for the compilation manager (interpreted/batch-mode)
- preprocess,
- compile, CompResult(..),
- link,
+ -- Interfaces for the batch-mode driver
+ linkBinary,
- -- DLL building
- doMkDLL,
+ -- Interfaces for the compilation manager (interpreted/batch-mode)
+ preprocess,
+ compile, compile',
+ link,
) where
import HeaderInfo
import DriverPhases
import SysTools
-import qualified SysTools
import HscMain
import Finder
import HscTypes
import Outputable
import Module
-import UniqFM ( eltsUFM )
+import UniqFM ( eltsUFM )
import ErrUtils
import DynFlags
-import StaticFlags ( v_Ld_inputs, opt_Static, WayName(..) )
+import StaticFlags ( v_Ld_inputs, opt_PIC, opt_Static, WayName(..) )
import Config
import Panic
import Util
-import StringBuffer ( hGetStringBuffer )
-import BasicTypes ( SuccessFlag(..) )
-import Maybes ( expectJust )
-import ParserCoreUtils ( getCoreModuleName )
-import SrcLoc ( unLoc )
-import SrcLoc ( Located(..) )
-
-import Control.Exception as Exception
-import Data.IORef ( readIORef, writeIORef, IORef )
-import GHC.Exts ( Int(..) )
+import StringBuffer ( hGetStringBuffer )
+import BasicTypes ( SuccessFlag(..) )
+import Maybes ( expectJust )
+import ParserCoreUtils ( getCoreModuleName )
+import SrcLoc
+import FastString
+import LlvmCodeGen ( llvmFixupAsm )
+import MonadUtils
+import Platform
+
+import Exception
+import Data.IORef ( readIORef )
import System.Directory
+import System.FilePath
import System.IO
-import SYSTEM_IO_ERROR as IO
import Control.Monad
-import Data.List ( isSuffixOf )
+import Data.List ( isSuffixOf )
import Data.Maybe
-import System.Exit
-import System.Cmd
import System.Environment
+import Data.Char
-- ---------------------------------------------------------------------------
-- Pre-process
--- Just preprocess a file, put the result in a temp. file (used by the
+-- | 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 :: 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)
- Nothing Temporary Nothing{-no ModLocation-}
+preprocess :: HscEnv
+ -> (FilePath, Maybe Phase) -- ^ filename and starting phase
+ -> IO (DynFlags, FilePath)
+preprocess hsc_env (filename, mb_phase) =
+ ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
+ runPipeline anyHsc hsc_env (filename, mb_phase)
+ Nothing Temporary Nothing{-no ModLocation-} Nothing{-no stub-}
-- ---------------------------------------------------------------------------
--- Compile
+-- | Compile
+--
-- Compile a single module, under the control of the compilation manager.
--
-- This is the interface between the compilation manager and the
-- compiler proper (hsc), where we deal with tedious details like
--- reading the OPTIONS pragma from the source file, and passing the
--- output of hsc through the C compiler.
-
+-- reading the OPTIONS pragma from the source file, converting the
+-- C or assembly that GHC produces into an object file, and compiling
+-- FFI stub files.
+--
-- NB. No old interface can also mean that the source has changed.
compile :: HscEnv
- -> ModSummary
- -> Maybe Linkable -- Just linkable <=> source unchanged
- -> Maybe ModIface -- Old interface, if available
- -> Int -> Int
- -> IO CompResult
-
-data CompResult
- = CompOK ModDetails -- New details
- ModIface -- New iface
- (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable
-
- | CompErrs
-
-
-compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do
-
- let dflags0 = ms_hspp_opts mod_summary
- this_mod = ms_mod mod_summary
- src_flavour = ms_hsc_src mod_summary
-
- have_object
- | Just l <- maybe_old_linkable, isObjectLinkable l = True
- | otherwise = False
-
- -- FIXME: We need to know whether or not we're recompiling the file. Move this to HscMain?
- --showPass dflags0 ("Compiling " ++ showModMsg have_object mod_summary)
-
- let location = ms_location mod_summary
- let input_fn = expectJust "compile:hs" (ml_hs_file location)
- let input_fnpp = ms_hspp_file mod_summary
+ -> ModSummary -- ^ summary for module being compiled
+ -> Int -- ^ module N ...
+ -> Int -- ^ ... of M
+ -> Maybe ModIface -- ^ old interface, if we have one
+ -> Maybe Linkable -- ^ old linkable, if we have one
+ -> IO HomeModInfo -- ^ the complete HomeModInfo, if successful
+
+compile = compile' (hscCompileNothing, hscCompileInteractive, hscCompileBatch)
+
+compile' ::
+ (Compiler (HscStatus, ModIface, ModDetails),
+ Compiler (InteractiveStatus, ModIface, ModDetails),
+ Compiler (HscStatus, ModIface, ModDetails))
+ -> HscEnv
+ -> ModSummary -- ^ summary for module being compiled
+ -> Int -- ^ module N ...
+ -> Int -- ^ ... of M
+ -> Maybe ModIface -- ^ old interface, if we have one
+ -> Maybe Linkable -- ^ old linkable, if we have one
+ -> IO HomeModInfo -- ^ the complete HomeModInfo, if successful
+
+compile' (nothingCompiler, interactiveCompiler, batchCompiler)
+ hsc_env0 summary mod_index nmods mb_old_iface maybe_old_linkable
+ = do
+ let dflags0 = ms_hspp_opts summary
+ this_mod = ms_mod summary
+ src_flavour = ms_hsc_src summary
+ location = ms_location summary
+ input_fn = expectJust "compile:hs" (ml_hs_file location)
+ input_fnpp = ms_hspp_file summary
debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
- let (basename, _) = splitFilename input_fn
+ let basename = dropExtension input_fn
-- 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
+ let current_dir = case takeDirectory basename of
+ "" -> "." -- XXX Hack
+ d -> d
old_paths = includePaths dflags0
dflags = dflags0 { includePaths = current_dir : old_paths }
+ hsc_env = hsc_env0 {hsc_dflags = dflags}
-- Figure out what lang we're generating
- let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
+ let hsc_lang = 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 next_phase
- Temporary basename dflags next_phase (Just location)
+ output_fn <- getOutputFilename next_phase
+ Temporary basename dflags next_phase (Just location)
let dflags' = dflags { hscTarget = hsc_lang,
- hscOutName = output_fn,
- extCoreName = basename ++ ".hcr" }
+ hscOutName = output_fn,
+ extCoreName = basename ++ ".hcr" }
+ let hsc_env' = hsc_env { hsc_dflags = dflags' }
- -- -no-recomp should also work with --make
+ -- -fforce-recomp should also work with --make
let force_recomp = dopt Opt_ForceRecomp dflags
source_unchanged = isJust maybe_old_linkable && not force_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 ]
-
- handleBatch (HscNoRecomp, iface, details)
+ let handleBatch HscNoRecomp
= ASSERT (isJust maybe_old_linkable)
- return (CompOK details iface maybe_old_linkable)
- handleBatch (HscRecomp hasStub, iface, details)
+ return maybe_old_linkable
+
+ handleBatch (HscRecomp hasStub _)
| isHsBoot src_flavour
- = return (CompOK details iface Nothing)
+ = do when (isObjectTarget hsc_lang) $ -- interpreted reaches here too
+ liftIO $ SysTools.touch dflags' "Touching object file"
+ object_filename
+ return maybe_old_linkable
+
| otherwise
- = do stub_unlinked <- getStubLinkable hasStub
- (hs_unlinked, unlinked_time) <-
+ = do (hs_unlinked, unlinked_time) <-
case hsc_lang of
- HscNothing
- -> return ([], ms_hs_date mod_summary)
+ HscNothing ->
+ return ([], ms_hs_date summary)
-- We're in --make mode: finish the compilation pipeline.
- _other
- -> do runPipeline StopLn dflags (output_fn,Nothing)
+ _other -> do
+ maybe_stub_o <- case hasStub of
+ Nothing -> return Nothing
+ Just stub_c -> do
+ stub_o <- compileStub hsc_env' stub_c
+ return (Just stub_o)
+ _ <- runPipeline StopLn hsc_env' (output_fn,Nothing)
(Just basename)
Persistent
(Just location)
+ maybe_stub_o
-- 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))
+ o_time <- getModificationTime object_filename
+ return ([DotO object_filename], o_time)
+
+ let linkable = LM unlinked_time this_mod hs_unlinked
+ return (Just linkable)
- handleInterpreted (InteractiveNoRecomp, iface, details)
+ handleInterpreted HscNoRecomp
= 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
+ return maybe_old_linkable
+ handleInterpreted (HscRecomp _hasStub Nothing)
+ = ASSERT (isHsBoot src_flavour)
+ return maybe_old_linkable
+ handleInterpreted (HscRecomp hasStub (Just (comp_bc, modBreaks)))
+ = do stub_o <- case hasStub of
+ Nothing -> return []
+ Just stub_c -> do
+ stub_o <- compileStub hsc_env' stub_c
+ return [DotO stub_o]
+
+ let hs_unlinked = [BCOs comp_bc modBreaks]
+ unlinked_time = ms_hs_date 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
-- 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
+ (hs_unlinked ++ stub_o)
+ return (Just linkable)
+
+ let -- runCompiler :: Compiler result -> (result -> Maybe Linkable)
+ -- -> m HomeModInfo
+ runCompiler compiler handle
+ = do (result, iface, details)
+ <- compiler hsc_env' summary source_unchanged mb_old_iface
+ (Just (mod_index, nmods))
+ linkable <- handle result
+ return (HomeModInfo{ hm_details = details,
+ hm_iface = iface,
+ hm_linkable = linkable })
-- run the compiler
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
+ HscInterpreted -> runCompiler interactiveCompiler handleInterpreted
+ HscNothing -> runCompiler nothingCompiler handleBatch
+ _other -> runCompiler batchCompiler handleBatch
-----------------------------------------------------------------------------
-- stub .h and .c files (for foreign export support)
-- 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
+-- The object file created by compiling the _stub.c file is put into a
+-- temporary file, which will be later combined with the main .o file
+-- (see the MergeStubs phase).
- -- compile the _stub.c file w/ gcc
- let (stub_c,_) = mkStubPaths dflags (moduleName mod) location
- runPipeline StopLn dflags (stub_c,Nothing) Nothing
- (SpecificFile stub_o) Nothing{-no ModLocation-}
-
- return stub_o
+compileStub :: HscEnv -> FilePath -> IO FilePath
+compileStub hsc_env stub_c = do
+ (_, stub_o) <- runPipeline StopLn hsc_env (stub_c,Nothing) Nothing
+ Temporary Nothing{-no ModLocation-} Nothing
+ return stub_o
-- ---------------------------------------------------------------------------
-- Link
-link :: GhcLink -- interactive or batch
- -> DynFlags -- dynamic flags
- -> Bool -- attempt linking in batch mode?
- -> HomePackageTable -- what to link
+link :: GhcLink -- interactive or batch
+ -> DynFlags -- dynamic flags
+ -> Bool -- attempt linking in batch mode?
+ -> HomePackageTable -- what to link
-> IO SuccessFlag
-- For the moment, in the batch linker, we don't bother to tell doLink
-- exports main, i.e., we have good reason to believe that linking
-- will succeed.
-#ifdef GHCI
-link LinkInMemory dflags batch_attempt_linking hpt
- = do -- Not Linking...(demand linker will do the job)
- return Succeeded
-#endif
+link LinkInMemory _ _ _
+ = if cGhcWithInterpreter == "YES"
+ then -- Not Linking...(demand linker will do the job)
+ return Succeeded
+ else panicBadLink LinkInMemory
-link NoLink dflags batch_attempt_linking hpt
+link NoLink _ _ _
= return Succeeded
link LinkBinary dflags batch_attempt_linking hpt
+ = link' dflags batch_attempt_linking hpt
+
+link LinkDynLib dflags batch_attempt_linking hpt
+ = link' dflags batch_attempt_linking hpt
+
+panicBadLink :: GhcLink -> a
+panicBadLink other = panic ("link: GHC not built to link this way: " ++
+ show other)
+
+link' :: DynFlags -- dynamic flags
+ -> Bool -- attempt linking in batch mode?
+ -> HomePackageTable -- what to link
+ -> IO SuccessFlag
+
+link' dflags batch_attempt_linking hpt
| batch_attempt_linking
- = do
- let
- home_mod_infos = eltsUFM hpt
+ = do
+ let
+ home_mod_infos = eltsUFM hpt
- -- the packages we depend on
- pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
+ -- the packages we depend on
+ pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
- -- the linkables to link
- linkables = map (expectJust "link".hm_linkable) home_mod_infos
+ -- the linkables to link
+ linkables = map (expectJust "link".hm_linkable) home_mod_infos
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 (text "link(batch): linking omitted (-c flag given).")
- return Succeeded
- else do
+ -- check for the -no-link flag
+ if isNoLink (ghcLink dflags)
+ then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
+ return Succeeded
+ else do
- let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
- obj_files = concatMap getOfiles linkables
+ let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
+ obj_files = concatMap getOfiles linkables
- exe_file = exeFileName dflags
+ 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)
+ linking_needed <- linkingNeeded dflags linkables pkg_deps
- if not (dopt Opt_ForceRecomp dflags) && not linking_needed
- then do debugTraceMsg dflags 2 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
- return Succeeded
- else do
+ if not (dopt Opt_ForceRecomp dflags) && not linking_needed
+ then do debugTraceMsg dflags 2 (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 "...")
+ debugTraceMsg dflags 1 (ptext (sLit "Linking") <+> text exe_file
+ <+> text "...")
- -- Don't showPass in Batch mode; doLink will do that for us.
- let link = case ghcLink dflags of
- MkDLL -> doMkDLL
- LinkBinary -> staticLink
- link dflags obj_files pkg_deps
+ -- Don't showPass in Batch mode; doLink will do that for us.
+ let link = case ghcLink dflags of
+ LinkBinary -> linkBinary
+ LinkDynLib -> linkDynLib
+ other -> panicBadLink other
+ link dflags obj_files pkg_deps
debugTraceMsg dflags 3 (text "link: done")
- -- staticLink only returns if it succeeds
+ -- linkBinary only returns if it succeeds
return Succeeded
| otherwise
= do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
text " Main.main not exported; not linking.")
return Succeeded
-
+
+
+linkingNeeded :: DynFlags -> [Linkable] -> [PackageId] -> IO Bool
+linkingNeeded dflags linkables pkg_deps = do
+ -- if the modification time on the executable is later than the
+ -- modification times on all of the objects and libraries, then omit
+ -- linking (unless the -fforce-recomp flag was given).
+ let exe_file = exeFileName dflags
+ e_exe_time <- tryIO $ getModificationTime exe_file
+ case e_exe_time of
+ Left _ -> return True
+ Right t -> do
+ -- first check object files and extra_ld_inputs
+ extra_ld_inputs <- readIORef v_Ld_inputs
+ e_extra_times <- mapM (tryIO . getModificationTime) extra_ld_inputs
+ let (errs,extra_times) = splitEithers e_extra_times
+ let obj_times = map linkableTime linkables ++ extra_times
+ if not (null errs) || any (t <) obj_times
+ then return True
+ else do
+
+ -- next, check libraries. XXX this only checks Haskell libraries,
+ -- not extra_libraries or -l things from the command line.
+ let pkg_map = pkgIdMap (pkgState dflags)
+ pkg_hslibs = [ (libraryDirs c, lib)
+ | Just c <- map (lookupPackage pkg_map) pkg_deps,
+ lib <- packageHsLibs dflags c ]
+
+ pkg_libfiles <- mapM (uncurry findHSLib) pkg_hslibs
+ if any isNothing pkg_libfiles then return True else do
+ e_lib_times <- mapM (tryIO . getModificationTime)
+ (catMaybes pkg_libfiles)
+ let (lib_errs,lib_times) = splitEithers e_lib_times
+ if not (null lib_errs) || any (t <) lib_times
+ then return True
+ else checkLinkInfo dflags pkg_deps exe_file
+
+-- Returns 'False' if it was, and we can avoid linking, because the
+-- previous binary was linked with "the same options".
+checkLinkInfo :: DynFlags -> [PackageId] -> FilePath -> IO Bool
+checkLinkInfo dflags pkg_deps exe_file
+ | isWindowsTarget || isDarwinTarget
+ -- ToDo: Windows and OS X do not use the ELF binary format, so
+ -- readelf does not work there. We need to find another way to do
+ -- this.
+ = return False -- conservatively we should return True, but not
+ -- linking in this case was the behaviour for a long
+ -- time so we leave it as-is.
+ | otherwise
+ = do
+ link_info <- getLinkInfo dflags pkg_deps
+ debugTraceMsg dflags 3 $ text ("Link info: " ++ link_info)
+ m_exe_link_info <- readElfSection dflags ghcLinkInfoSectionName exe_file
+ debugTraceMsg dflags 3 $ text ("Exe link info: " ++ show m_exe_link_info)
+ return (Just link_info /= m_exe_link_info)
+
+ghcLinkInfoSectionName :: String
+ghcLinkInfoSectionName = ".debug-ghc-link-info"
+ -- if we use the ".debug" prefix, then strip will strip it by default
+
+findHSLib :: [String] -> String -> IO (Maybe FilePath)
+findHSLib dirs lib = do
+ let batch_lib_file = "lib" ++ lib <.> "a"
+ found <- filterM doesFileExist (map (</> batch_lib_file) dirs)
+ case found of
+ [] -> return Nothing
+ (x:_) -> return (Just x)
-- -----------------------------------------------------------------------------
-- 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
+oneShot :: HscEnv -> Phase -> [(String, Maybe Phase)] -> IO ()
+oneShot hsc_env stop_phase srcs = do
+ o_files <- mapM (compileFile hsc_env stop_phase) srcs
+ doLink (hsc_dflags hsc_env) stop_phase o_files
-compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
-compileFile dflags stop_phase (src, mb_phase) = do
+compileFile :: HscEnv -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
+compileFile hsc_env stop_phase (src, mb_phase) = do
exists <- doesFileExist src
- when (not exists) $
- throwDyn (CmdLineError ("does not exist: " ++ src))
-
+ when (not exists) $
+ ghcError (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
+ dflags = hsc_dflags hsc_env
+ 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.
+ -- 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) Nothing output
- Nothing{-no ModLocation-}
+ | 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
+ _ -> stop_phase
+
+ ( _, out_file) <- runPipeline stop_phase' hsc_env
+ (src, mb_phase) Nothing output
+ Nothing{-no ModLocation-} Nothing
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
+ = return () -- We stopped before the linking phase
| otherwise
= case ghcLink dflags of
- NoLink -> return ()
- LinkBinary -> 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 = [haskell98PackageId]
+ NoLink -> return ()
+ LinkBinary -> linkBinary dflags o_files []
+ LinkDynLib -> linkDynLib dflags o_files []
+ other -> panicBadLink other
-- ---------------------------------------------------------------------------
--- Run a compilation pipeline, consisting of multiple phases.
+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.
+
+-- | 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
+-- OPTIONS_GHC 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
- :: Phase -- When to stop
- -> DynFlags -- Dynamic flags
- -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
- -> Maybe FilePath -- original basename (if different from ^^^)
- -> 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) mb_basename output maybe_loc
+ :: Phase -- ^ When to stop
+ -> HscEnv -- ^ Compilation environment
+ -> (FilePath,Maybe Phase) -- ^ Input filename (and maybe -x suffix)
+ -> Maybe FilePath -- ^ original basename (if different from ^^^)
+ -> PipelineOutput -- ^ Output filename
+ -> Maybe ModLocation -- ^ A ModLocation, if this is a Haskell module
+ -> Maybe FilePath -- ^ stub object, if we have one
+ -> IO (DynFlags, FilePath) -- ^ (final flags, output filename)
+
+runPipeline stop_phase hsc_env0 (input_fn, mb_phase)
+ mb_basename output maybe_loc maybe_stub_o
= do
- let (input_basename, suffix) = splitFilename input_fn
+ let dflags0 = hsc_dflags hsc_env0
+ (input_basename, suffix) = splitExtension input_fn
+ suffix' = drop 1 suffix -- strip off the .
basename | Just b <- mb_basename = b
| otherwise = input_basename
- -- If we were given a -x flag, then use that phase to start from
- start_phase = fromMaybe (startPhase suffix) mb_phase
+ -- Decide where dump files should go based on the pipeline output
+ dflags = dflags0 { dumpPrefix = Just (basename ++ ".") }
+ hsc_env = hsc_env0 {hsc_dflags = dflags}
+
+ -- If we were given a -x flag, then use that phase to start from
+ start_phase = fromMaybe (startPhase suffix') mb_phase
-- 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
-- before B in a normal compilation pipeline.
when (not (start_phase `happensBefore` stop_phase)) $
- throwDyn (UsageError
- ("cannot compile this file to desired target: "
- ++ input_fn))
+ ghcError (UsageError
+ ("cannot compile this file to desired target: "
+ ++ input_fn))
-- 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 stop_phase output basename
-- Execute the pipeline...
- (dflags', output_fn, maybe_loc) <-
- pipeLoop dflags start_phase stop_phase input_fn
- basename suffix get_output_fn maybe_loc
+ let env = PipeEnv{ stop_phase,
+ src_basename = basename,
+ src_suffix = suffix',
+ output_spec = output }
+
+ state = PipeState{ hsc_env, maybe_loc, maybe_stub_o = maybe_stub_o }
+
+ (state', output_fn) <- unP (pipeLoop start_phase input_fn) env state
+
+ let PipeState{ hsc_env=hsc_env', maybe_loc } = state'
+ dflags' = hsc_dflags hsc_env'
-- 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
-- copy the file, remembering to prepend a {-# LINE #-} pragma so that
-- further compilation stages can tell what the original filename was.
case output of
- Temporary ->
- return (dflags', output_fn)
- _other ->
- do final_fn <- get_output_fn dflags' stop_phase maybe_loc
- when (final_fn /= output_fn) $ do
+ Temporary ->
+ return (dflags', output_fn)
+ _other ->
+ do final_fn <- get_output_fn dflags' stop_phase maybe_loc
+ when (final_fn /= output_fn) $ do
let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
- copyWithHeader dflags msg line_prag output_fn final_fn
- return (dflags', final_fn)
-
-
-
-pipeLoop :: DynFlags -> Phase -> Phase
- -> FilePath -> String -> Suffix
- -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
- -> Maybe ModLocation
- -> IO (DynFlags, FilePath, Maybe ModLocation)
+ copyWithHeader dflags msg line_prag output_fn final_fn
+ return (dflags', final_fn)
-pipeLoop dflags phase stop_phase
- input_fn orig_basename orig_suff
- orig_get_output_fn maybe_loc
-
- | phase `eqPhase` stop_phase -- All done
- = return (dflags, input_fn, maybe_loc)
+-- -----------------------------------------------------------------------------
+-- The pipeline uses a monad to carry around various bits of information
+
+-- PipeEnv: invariant information passed down
+data PipeEnv = PipeEnv {
+ stop_phase :: Phase, -- ^ Stop just before this phase
+ src_basename :: String, -- ^ basename of original input source
+ src_suffix :: String, -- ^ its extension
+ output_spec :: PipelineOutput -- ^ says where to put the pipeline output
+ }
+
+-- PipeState: information that might change during a pipeline run
+data PipeState = PipeState {
+ hsc_env :: HscEnv,
+ -- ^ only the DynFlags change in the HscEnv. The DynFlags change
+ -- at various points, for example when we read the OPTIONS_GHC
+ -- pragmas in the Cpp phase.
+ maybe_loc :: Maybe ModLocation,
+ -- ^ the ModLocation. This is discovered during compilation,
+ -- in the Hsc phase where we read the module header.
+ maybe_stub_o :: Maybe FilePath
+ -- ^ the stub object. This is set by the Hsc phase if a stub
+ -- object was created. The stub object will be joined with
+ -- the main compilation object using "ld -r" at the end.
+ }
+
+getPipeEnv :: CompPipeline PipeEnv
+getPipeEnv = P $ \env state -> return (state, env)
+
+getPipeState :: CompPipeline PipeState
+getPipeState = P $ \_env state -> return (state, state)
+
+getDynFlags :: CompPipeline DynFlags
+getDynFlags = P $ \_env state -> return (state, hsc_dflags (hsc_env state))
+
+setDynFlags :: DynFlags -> CompPipeline ()
+setDynFlags dflags = P $ \_env state ->
+ return (state{hsc_env= (hsc_env state){ hsc_dflags = dflags }}, ())
+
+setModLocation :: ModLocation -> CompPipeline ()
+setModLocation loc = P $ \_env state ->
+ return (state{ maybe_loc = Just loc }, ())
+
+setStubO :: FilePath -> CompPipeline ()
+setStubO stub_o = P $ \_env state ->
+ return (state{ maybe_stub_o = Just stub_o }, ())
+
+newtype CompPipeline a = P { unP :: PipeEnv -> PipeState -> IO (PipeState, a) }
+
+instance Monad CompPipeline where
+ return a = P $ \_env state -> return (state, a)
+ P m >>= k = P $ \env state -> do (state',a) <- m env state
+ unP (k a) env state'
+
+io :: IO a -> CompPipeline a
+io m = P $ \_env state -> do a <- m; return (state, a)
+
+phaseOutputFilename :: Phase{-next phase-} -> CompPipeline FilePath
+phaseOutputFilename next_phase = do
+ PipeEnv{stop_phase, src_basename, output_spec} <- getPipeEnv
+ PipeState{maybe_loc, hsc_env} <- getPipeState
+ let dflags = hsc_dflags hsc_env
+ io $ getOutputFilename stop_phase output_spec
+ src_basename dflags next_phase maybe_loc
- | 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)
+-- ---------------------------------------------------------------------------
+-- outer pipeline loop
+
+-- | pipeLoop runs phases until we reach the stop phase
+pipeLoop :: Phase -> FilePath -> CompPipeline FilePath
+pipeLoop phase input_fn = do
+ PipeEnv{stop_phase} <- getPipeEnv
+ PipeState{hsc_env} <- getPipeState
+ case () of
+ _ | phase `eqPhase` stop_phase -- All done
+ -> return input_fn
+
+ | 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 io $ debugTraceMsg (hsc_dflags hsc_env) 4
+ (ptext (sLit "Running phase") <+> ppr phase)
+ dflags <- getDynFlags
+ (next_phase, output_fn) <- runPhase phase input_fn dflags
+ pipeLoop next_phase output_fn
- | 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 }
+-- -----------------------------------------------------------------------------
+-- In each phase, we need to know into what filename to generate the
+-- output. All the logic about which filenames we generate output
+-- into is embodied in the following function.
getOutputFilename
:: Phase -> PipelineOutput -> String
getOutputFilename stop_phase output basename
= func
where
- func dflags next_phase maybe_location
- | 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
- 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
-
- 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 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 = d `joinFileName` persistent
- | otherwise = persistent
+ func dflags next_phase maybe_location
+ | 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
+ hcsuf = hcSuf dflags
+ odir = objectDir dflags
+ osuf = objectSuf dflags
+ keep_hc = dopt Opt_KeepHcFiles dflags
+ keep_s = dopt Opt_KeepSFiles dflags
+ keep_bc = dopt Opt_KeepLlvmFiles dflags
+
+ myPhaseInputExt HCc = hcsuf
+ myPhaseInputExt MergeStub = osuf
+ myPhaseInputExt StopLn = osuf
+ myPhaseInputExt other = phaseInputExt other
+
+ is_last_phase = next_phase `eqPhase` stop_phase
+
+ -- sometimes, we keep output from intermediate stages
+ keep_this_output =
+ case next_phase of
+ As | keep_s -> True
+ LlvmOpt | keep_bc -> True
+ HCc | keep_hc -> True
+ _other -> False
+
+ suffix = myPhaseInputExt next_phase
+
+ -- persistent object files get put in odir
+ persistent_fn
+ | StopLn <- next_phase = return odir_persistent
+ | otherwise = return persistent
+
+ persistent = basename <.> suffix
+
+ odir_persistent
+ | Just loc <- maybe_location = ml_obj_file loc
+ | Just d <- odir = d </> persistent
+ | otherwise = persistent
-- -----------------------------------------------------------------------------
--- Each phase in the pipeline returns the next phase to execute, and the
+-- | Each phase in the pipeline returns the next phase to execute, and the
-- name of the file in which the output was placed.
--
-- We must do things dynamically this way, because we often don't know
-- compilation: for example, an {-# OPTIONS -fasm #-} at the beginning
-- 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 -- ^ Run this phase
+ -> FilePath -- ^ name of the input file
+ -> DynFlags -- ^ for convenience, we pass the current dflags in
+ -> CompPipeline (Phase, -- next phase to run
+ 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
-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.
- -> (DynFlags -> Phase -> Maybe ModLocation -> IO FilePath)
- -- how to calculate the 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
+-- Unlit phase
+
+runPhase (Unlit sf) input_fn dflags
+ = do
+ output_fn <- phaseOutputFilename (Cpp sf)
-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 dflags (Cpp sf) maybe_loc
+ let unlit_flags = getOpts dflags opt_L
+ flags = map SysTools.Option unlit_flags ++
+ [ -- The -h option passes the file name for unlit to
+ -- put in a #line directive
+ SysTools.Option "-h"
+ -- cpp interprets \b etc as escape sequences,
+ -- so we use / for filenames in pragmas
+ , SysTools.Option $ reslash Forwards $ normalise input_fn
+ , SysTools.FileOption "" input_fn
+ , SysTools.FileOption "" output_fn
+ ]
- SysTools.runUnlit dflags
- (map SysTools.Option unlit_flags ++
- [ SysTools.Option "-h"
- , SysTools.Option input_fn
- , SysTools.FileOption "" input_fn
- , SysTools.FileOption "" output_fn
- ])
+ io $ SysTools.runUnlit dflags flags
- return (Cpp sf, dflags, maybe_loc, output_fn)
+ return (Cpp sf, output_fn)
-------------------------------------------------------------------------------
-- Cpp phase : (a) gets OPTIONS out of file
--- (b) runs cpp if necessary
+-- (b) runs cpp if necessary
+
+runPhase (Cpp sf) input_fn dflags0
+ = do
+ src_opts <- io $ getOptionsFromFile dflags0 input_fn
+ (dflags1, unhandled_flags, warns)
+ <- io $ parseDynamicNoPackageFlags dflags0 src_opts
+ setDynFlags dflags1
+ io $ checkProcessArgsResult unhandled_flags
-runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc
- = do src_opts <- getOptionsFromFile input_fn
- (dflags,unhandled_flags) <- parseDynamicFlags dflags0 (map unLoc src_opts)
- checkProcessArgsResult unhandled_flags (basename `joinFileExt` suff)
+ if not (xopt Opt_Cpp dflags1) then do
+ -- we have to be careful to emit warnings only once.
+ unless (dopt Opt_Pp dflags1) $ io $ handleFlagWarnings dflags1 warns
- 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 (HsPp sf, dflags, maybe_loc, input_fn)
- else do
- output_fn <- get_output_fn dflags (HsPp sf) maybe_loc
- doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
- return (HsPp sf, dflags, maybe_loc, output_fn)
+ -- to the next phase of the pipeline.
+ return (HsPp sf, input_fn)
+ else do
+ output_fn <- phaseOutputFilename (HsPp sf)
+ io $ doCpp dflags1 True{-raw-} False{-no CC opts-} input_fn output_fn
+ -- re-read the pragmas now that we've preprocessed the file
+ -- See #2464,#3457
+ src_opts <- io $ getOptionsFromFile dflags0 output_fn
+ (dflags2, unhandled_flags, warns)
+ <- io $ parseDynamicNoPackageFlags dflags0 src_opts
+ io $ checkProcessArgsResult unhandled_flags
+ unless (dopt Opt_Pp dflags2) $ io $ handleFlagWarnings dflags2 warns
+ -- the HsPp pass below will emit warnings
+
+ setDynFlags dflags2
+
+ return (HsPp sf, output_fn)
-------------------------------------------------------------------------------
--- HsPp phase
+-- HsPp phase
-runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
- = do if not (dopt Opt_Pp dflags) then
+runPhase (HsPp sf) input_fn dflags
+ = 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 (Hsc sf, dflags, maybe_loc, input_fn)
- else do
- let hspp_opts = getOpts dflags opt_F
- let orig_fn = basename `joinFileExt` suff
- output_fn <- get_output_fn dflags (Hsc sf) maybe_loc
- SysTools.runPp dflags
- ( [ SysTools.Option orig_fn
- , SysTools.Option input_fn
- , SysTools.FileOption "" output_fn
- ] ++
- map SysTools.Option hspp_opts
- )
- return (Hsc sf, dflags, maybe_loc, output_fn)
+ -- to the next phase of the pipeline.
+ return (Hsc sf, input_fn)
+ else do
+ let hspp_opts = getOpts dflags opt_F
+ PipeEnv{src_basename, src_suffix} <- getPipeEnv
+ let orig_fn = src_basename <.> src_suffix
+ output_fn <- phaseOutputFilename (Hsc sf)
+ io $ SysTools.runPp dflags
+ ( [ SysTools.Option orig_fn
+ , SysTools.Option input_fn
+ , SysTools.FileOption "" output_fn
+ ] ++
+ map SysTools.Option hspp_opts
+ )
+
+ -- re-read pragmas now that we've parsed the file (see #3674)
+ src_opts <- io $ getOptionsFromFile dflags output_fn
+ (dflags1, unhandled_flags, warns)
+ <- io $ parseDynamicNoPackageFlags dflags src_opts
+ setDynFlags dflags1
+ io $ checkProcessArgsResult unhandled_flags
+ io $ handleFlagWarnings dflags1 warns
+
+ return (Hsc sf, output_fn)
-----------------------------------------------------------------------------
-- Hsc phase
-- Compilation of a single module, in "legacy" mode (_not_ under
-- the direction of the compilation manager).
-runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _maybe_loc
- = do -- normal Hsc mode, not mkdependHS
+runPhase (Hsc src_flavour) input_fn dflags0
+ = do -- normal Hsc mode, not mkdependHS
+
+ PipeEnv{ stop_phase=stop,
+ src_basename=basename,
+ src_suffix=suff } <- getPipeEnv
-- we add the current directory (i.e. the directory in which
- -- the .hs files resides) to the import path, since this is
+ -- the .hs files resides) to the include path, since this is
-- what gcc does, and it's probably what you want.
- let current_dir = directoryOf basename
-
- paths = includePaths dflags0
- dflags = dflags0 { includePaths = current_dir : paths }
-
+ let current_dir = case takeDirectory basename of
+ "" -> "." -- XXX Hack
+ d -> d
+
+ paths = includePaths dflags0
+ dflags = dflags0 { includePaths = current_dir : paths }
+
+ setDynFlags dflags
+
-- gather the imports and module name
- (hspp_buf,mod_name) <-
+ (hspp_buf,mod_name,imps,src_imps) <- io $
case src_flavour of
- ExtCoreFile -> do { -- no explicit imports in ExtCore input.
- ; m <- getCoreModuleName input_fn
- ; return (Nothing, mkModuleName m) }
+ ExtCoreFile -> do -- no explicit imports in ExtCore input.
+ m <- getCoreModuleName input_fn
+ return (Nothing, mkModuleName m, [], [])
- other -> do { buf <- hGetStringBuffer input_fn
- ; (_,_,L _ mod_name) <- getImports dflags buf input_fn
- ; return (Just buf, mod_name) }
+ _ -> do
+ buf <- hGetStringBuffer input_fn
+ (src_imps,imps,L _ mod_name) <- getImports dflags buf input_fn (basename <.> suff)
+ return (Just buf, mod_name, imps, src_imps)
-- 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
+ -- 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
+ -- as any to generate them, and better than most. (e.g. takes
-- into accout the -osuf flags)
- location1 <- mkHomeModLocation2 dflags mod_name basename suff
+ location1 <- io $ mkHomeModLocation2 dflags mod_name basename suff
-- Boot-ify it if necessary
- let location2 | isHsBoot src_flavour = addBootSuffixLocn location1
- | otherwise = location1
-
+ 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
+ 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
+ let expl_o_file = outputFile dflags
+ location4 | Just ofile <- expl_o_file
+ , isNoLink (ghcLink dflags)
+ = location3 { ml_obj_file = ofile }
+ | otherwise = location3
- o_file = ml_obj_file location4 -- The real object file
+ o_file = ml_obj_file location4 -- The real object file
+ setModLocation location4
-- Figure out if the source has changed, for recompilation avoidance.
--
-- 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.
- src_timestamp <- getModificationTime (basename `joinFileExt` suff)
+ src_timestamp <- io $ getModificationTime (basename <.> suff)
- let force_recomp = dopt Opt_ForceRecomp dflags
- source_unchanged <-
+ let force_recomp = dopt Opt_ForceRecomp dflags
+ hsc_lang = hscTarget dflags
+ source_unchanged <- io $
if force_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 > src_timestamp
- then return True
- else return False
+ -- 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 > src_timestamp
+ then return True
+ else return False
-- get the DynFlags
- let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
- let next_phase = hscNextPhase dflags src_flavour hsc_lang
- output_fn <- get_output_fn dflags next_phase (Just location4)
+ let next_phase = hscNextPhase dflags src_flavour hsc_lang
+ output_fn <- phaseOutputFilename next_phase
let dflags' = dflags { hscTarget = hsc_lang,
- hscOutName = output_fn,
- extCoreName = basename ++ ".hcr" }
+ hscOutName = output_fn,
+ extCoreName = basename ++ ".hcr" }
- hsc_env <- newHscEnv dflags'
+ setDynFlags dflags'
+ PipeState{hsc_env=hsc_env'} <- getPipeState
-- Tell the finder cache about this module
- mod <- addHomeModuleToFinder hsc_env mod_name location4
+ mod <- io $ addHomeModuleToFinder hsc_env' mod_name location4
-- Make the ModSummary to hand to hscMain
- let
- unused_field = panic "runPhase:ModSummary field"
- -- Some fields are not looked at by hscMain
- mod_summary = ModSummary { ms_mod = mod,
- ms_hsc_src = src_flavour,
- ms_hspp_file = input_fn,
+ let
+ mod_summary = ModSummary { ms_mod = mod,
+ ms_hsc_src = src_flavour,
+ ms_hspp_file = input_fn,
ms_hspp_opts = dflags,
- 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 }
+ ms_hspp_buf = hspp_buf,
+ ms_location = location4,
+ ms_hs_date = src_timestamp,
+ ms_obj_date = Nothing,
+ ms_imps = imps,
+ ms_srcimps = src_imps }
-- run the compiler!
- mbResult <- hscCompileOneShot hsc_env
- mod_summary source_unchanged
- Nothing -- No iface
+ result <- io $ 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
+ case result of
+ HscNoRecomp
+ -> do io $ 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 location4
- consIORef v_Ld_inputs stub_o
- -- In the case of hs-boot files, generate a dummy .o-boot
+ return (StopLn, o_file)
+ (HscRecomp hasStub _)
+ -> do case hasStub of
+ Nothing -> return ()
+ Just stub_c ->
+ do stub_o <- io $ compileStub hsc_env' stub_c
+ setStubO 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)
+ io $ SysTools.touch dflags' "Touching object file" o_file
+ return (next_phase, output_fn)
-----------------------------------------------------------------------------
-- Cmm phase
-runPhase CmmCpp stop dflags basename suff input_fn get_output_fn maybe_loc
+runPhase CmmCpp input_fn dflags
= do
- output_fn <- get_output_fn dflags Cmm maybe_loc
- doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
- return (Cmm, dflags, maybe_loc, output_fn)
+ output_fn <- phaseOutputFilename Cmm
+ io $ doCpp dflags False{-not raw-} True{-include CC opts-}
+ input_fn output_fn
+ return (Cmm, output_fn)
-runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc
+runPhase Cmm input_fn dflags
= do
- let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
- let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
- output_fn <- get_output_fn dflags next_phase maybe_loc
+ PipeEnv{src_basename} <- getPipeEnv
+ let hsc_lang = hscTarget dflags
+
+ let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
+
+ output_fn <- phaseOutputFilename next_phase
let dflags' = dflags { hscTarget = hsc_lang,
- hscOutName = output_fn,
- extCoreName = basename ++ ".hcr" }
+ hscOutName = output_fn,
+ extCoreName = src_basename ++ ".hcr" }
- ok <- hscCmmFile dflags' input_fn
+ setDynFlags dflags'
+ PipeState{hsc_env} <- getPipeState
- when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1))
+ io $ hscCompileCmmFile hsc_env input_fn
- return (next_phase, dflags, maybe_loc, output_fn)
+ -- XXX: catch errors above and convert them into ghcError? Original
+ -- code was:
+ --
+ --when (not ok) $ ghcError (PhaseFailed "cmm" (ExitFailure 1))
+
+ return (next_phase, output_fn)
-----------------------------------------------------------------------------
-- Cc phase
-- 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 stop dflags basename suff input_fn get_output_fn maybe_loc
- | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc
- = do let cc_opts = getOpts dflags opt_c
- hcc = cc_phase `eqPhase` HCc
+runPhase cc_phase input_fn dflags
+ | cc_phase `eqPhase` Cc || cc_phase `eqPhase` Ccpp || cc_phase `eqPhase` HCc || cc_phase `eqPhase` Cobjc
+ = do
+ let cc_opts = getOpts dflags opt_c
+ hcc = cc_phase `eqPhase` HCc
- let cmdline_include_paths = includePaths dflags
+ let cmdline_include_paths = includePaths dflags
- -- HC files have the dependent packages stamped into them
- pkgs <- if hcc then getHCFilePackages input_fn else return []
+ -- HC files have the dependent packages stamped into them
+ pkgs <- if hcc then io $ getHCFilePackages input_fn else return []
- -- 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 dflags pkgs
+ -- 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 <- io $ getPackageIncludePath dflags pkgs
let include_paths = foldr (\ x xs -> "-I" : x : xs) []
- (cmdline_include_paths ++ pkg_include_dirs)
+ (cmdline_include_paths ++ pkg_include_dirs)
- let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
+ let gcc_extra_viac_flags = extraGccViaCFlags dflags
let pic_c_flags = picCCOpts dflags
- let verb = getVerbFlag dflags
+ let verbFlags = getVerbFlags dflags
- pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs
+ -- cc-options are not passed when compiling .hc files. Our
+ -- hc code doesn't not #include any header files anyway, so these
+ -- options aren't necessary.
+ pkg_extra_cc_opts <- io $
+ if cc_phase `eqPhase` HCc
+ then return []
+ else getPackageExtraCcOpts dflags pkgs
- let split_objs = dopt Opt_SplitObjs dflags
- split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
- | otherwise = [ ]
-
- let excessPrecision = dopt Opt_ExcessPrecision dflags
-
- let cc_opt | optLevel dflags >= 2 = "-O2"
- | otherwise = "-O"
+#ifdef darwin_TARGET_OS
+ pkg_framework_paths <- io $ getPackageFrameworkPath dflags pkgs
+ let cmdline_framework_paths = frameworkPaths dflags
+ let framework_paths = map ("-F"++)
+ (cmdline_framework_paths ++ pkg_framework_paths)
+#endif
- -- Decide next phase
-
- let mangle = dopt Opt_DoAsmMangling dflags
- next_phase
- | hcc && mangle = Mangle
- | otherwise = As
- output_fn <- get_output_fn dflags next_phase maybe_loc
+ let split_objs = dopt Opt_SplitObjs dflags
+ split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
+ | otherwise = [ ]
+
+ let cc_opt | optLevel dflags >= 2 = "-O2"
+ | otherwise = "-O"
+
+ -- Decide next phase
+
+ let next_phase = As
+ output_fn <- phaseOutputFilename next_phase
+
+ let
+ more_hcc_opts =
+ -- 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 platformArch (targetPlatform dflags) == ArchX86 &&
+ not (dopt Opt_ExcessPrecision dflags)
+ then [ "-ffloat-store" ]
+ else []) ++
+
+ -- 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"]
+
+ let gcc_lang_opt | cc_phase `eqPhase` Ccpp = "c++"
+ | cc_phase `eqPhase` Cobjc = "objective-c"
+ | otherwise = "c"
+ io $ 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 gcc_lang_opt
+ , SysTools.FileOption "" input_fn
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ ]
+ ++ map SysTools.Option (
+ pic_c_flags
+
+ -- Stub files generated for foreign exports references the runIO_closure
+ -- and runNonIO_closure symbols, which are defined in the base package.
+ -- These symbols are imported into the stub.c file via RtsAPI.h, and the
+ -- way we do the import depends on whether we're currently compiling
+ -- the base package or not.
+ ++ (if platformOS (targetPlatform dflags) == OSMinGW32 &&
+ thisPackage dflags == basePackageId
+ then [ "-DCOMPILING_BASE_PACKAGE" ]
+ else [])
- 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", if cc_phase `eqPhase` Ccpp
- then SysTools.Option "c++" else SysTools.Option "c"] ++
- [ SysTools.FileOption "" input_fn
- , SysTools.Option "-o"
- , SysTools.FileOption "" output_fn
- ]
- ++ map SysTools.Option (
- md_c_flags
- ++ pic_c_flags
-#ifdef sparc_TARGET_ARCH
-- We only support SparcV9 and better because V8 lacks an atomic CAS
-- instruction. Note that the user can still override this
- -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
- -- regardless of the ordering.
+ -- (e.g., -mcpu=ultrasparc) as GCC picks the "best" -mcpu flag
+ -- regardless of the ordering.
--
-- This is a temporary hack.
- ++ ["-mcpu=v9"]
-#endif
- ++ (if hcc && mangle
- then md_regd_c_flags
- else [])
- ++ (if hcc
- then more_hcc_opts
- else [])
- ++ [ verb, "-S", "-Wimplicit", cc_opt ]
- ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
- ++ cc_opts
- ++ split_opt
- ++ include_paths
- ++ pkg_extra_cc_opts
-#ifdef HAVE_GCC_HAS_WRAPV
- -- We need consistent integer overflow (trac #952)
- ++ ["-fwrapv"]
+ ++ (if platformArch (targetPlatform dflags) == ArchSPARC
+ then ["-mcpu=v9"]
+ else [])
+
+ ++ (if hcc
+ then gcc_extra_viac_flags ++ more_hcc_opts
+ else [])
+ ++ verbFlags
+ ++ [ "-S", "-Wimplicit", cc_opt ]
+ ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
+#ifdef darwin_TARGET_OS
+ ++ framework_paths
#endif
- ))
+ ++ cc_opts
+ ++ split_opt
+ ++ include_paths
+ ++ pkg_extra_cc_opts
+ ))
- return (next_phase, dflags, maybe_loc, output_fn)
+ return (next_phase, output_fn)
- -- ToDo: postprocess the output from gcc
+ -- ToDo: postprocess the output from gcc
-----------------------------------------------------------------------------
--- Mangle phase
+-- Splitting phase
-runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
- = do let mangler_opts = getOpts dflags opt_m
+runPhase SplitMangle input_fn dflags
+ = do -- tmp_pfx is the prefix used for the split .s files
-#if i386_TARGET_ARCH
- machdep_opts <- return [ show (stolen_x86_regs dflags) ]
-#else
- machdep_opts <- return []
-#endif
+ split_s_prefix <- io $ SysTools.newTempName dflags "split"
+ let n_files_fn = split_s_prefix
+
+ io $ SysTools.runSplit dflags
+ [ SysTools.FileOption "" input_fn
+ , SysTools.FileOption "" split_s_prefix
+ , SysTools.FileOption "" n_files_fn
+ ]
+
+ -- Save the number of split files for future references
+ s <- io $ readFile n_files_fn
+ let n_files = read s :: Int
+ dflags' = dflags { splitInfo = Just (split_s_prefix, n_files) }
- let split = dopt Opt_SplitObjs dflags
- next_phase
- | split = SplitMangle
- | otherwise = As
- output_fn <- get_output_fn dflags next_phase maybe_loc
+ setDynFlags dflags'
- SysTools.runMangle dflags (map SysTools.Option mangler_opts
- ++ [ SysTools.FileOption "" input_fn
- , SysTools.FileOption "" output_fn
- ]
- ++ map SysTools.Option machdep_opts)
+ -- Remember to delete all these files
+ io $ addFilesToClean dflags' [ split_s_prefix ++ "__" ++ show n ++ ".s"
+ | n <- [1..n_files]]
- return (next_phase, dflags, maybe_loc, output_fn)
+ return (SplitAs, "**splitmangle**")
+ -- we don't use the filename
-----------------------------------------------------------------------------
--- Splitting phase
+-- As phase
-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 dflags "split"
- let n_files_fn = split_s_prefix
+runPhase As input_fn dflags
+ = do
+ let as_opts = getOpts dflags opt_a
+ let cmdline_include_paths = includePaths dflags
- SysTools.runSplit dflags
- [ SysTools.FileOption "" input_fn
- , SysTools.FileOption "" split_s_prefix
- , SysTools.FileOption "" n_files_fn
- ]
+ next_phase <- maybeMergeStub
+ output_fn <- phaseOutputFilename next_phase
- -- Save the number of split files for future references
- s <- readFile n_files_fn
- let n_files = read s :: Int
- writeIORef v_Split_info (split_s_prefix, n_files)
+ -- we create directories for the object file, because it
+ -- might be a hierarchical module.
+ io $ createDirectoryHierarchy (takeDirectory output_fn)
- -- Remember to delete all these files
- addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
- | n <- [1..n_files]]
+ io $ SysTools.runAs dflags
+ (map SysTools.Option as_opts
+ ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
- return (SplitAs, dflags, maybe_loc, "**splitmangle**")
- -- we don't use the filename
+ -- We only support SparcV9 and better because V8 lacks an atomic CAS
+ -- instruction so we have to make sure that the assembler accepts the
+ -- instruction set. Note that the user can still override this
+ -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
+ -- regardless of the ordering.
+ --
+ -- This is a temporary hack.
+ ++ (if platformArch (targetPlatform dflags) == ArchSPARC
+ then [SysTools.Option "-mcpu=v9"]
+ else [])
------------------------------------------------------------------------------
--- As phase
+ ++ [ SysTools.Option "-c"
+ , SysTools.FileOption "" input_fn
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ ])
-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
+ return (next_phase, output_fn)
- output_fn <- get_output_fn dflags StopLn maybe_loc
- -- we create directories for the object file, because it
- -- might be a hierarchical module.
- createDirectoryHierarchy (directoryOf output_fn)
+runPhase SplitAs _input_fn dflags
+ = do
+ -- we'll handle the stub_o file in this phase, so don't MergeStub,
+ -- just jump straight to StopLn afterwards.
+ let next_phase = StopLn
+ output_fn <- phaseOutputFilename next_phase
+
+ let base_o = dropExtension output_fn
+ osuf = objectSuf dflags
+ split_odir = base_o ++ "_" ++ osuf ++ "_split"
+
+ io $ 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 <- io $ getDirectoryContents split_odir
+ io $ mapM_ removeFile $
+ map (split_odir </>) $ filter (osuf `isSuffixOf`) fs
+
+ let as_opts = getOpts dflags opt_a
+
+ let (split_s_prefix, n) = case splitInfo dflags of
+ Nothing -> panic "No split info"
+ Just x -> x
+
+ let split_s n = split_s_prefix ++ "__" ++ show n <.> "s"
+
+ split_obj :: Int -> FilePath
+ split_obj n = split_odir </>
+ takeFileName base_o ++ "__" ++ show n <.> osuf
+
+ let assemble_file n
+ = SysTools.runAs dflags
+ (map SysTools.Option as_opts ++
- SysTools.runAs dflags
- (map SysTools.Option as_opts
- ++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
-#ifdef sparc_TARGET_ARCH
-- We only support SparcV9 and better because V8 lacks an atomic CAS
- -- instruction so we have to make sure that the assembler accepts the
+ -- instruction so we have to make sure that the assembler accepts the
-- instruction set. Note that the user can still override this
- -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
- -- regardless of the ordering.
- --
- -- This is a temporary hack.
- ++ [ SysTools.Option "-mcpu=v9" ]
-#endif
- ++ [ SysTools.Option "-c"
- , SysTools.FileOption "" input_fn
- , SysTools.Option "-o"
- , SysTools.FileOption "" 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 dflags 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 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
- = 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]
-
- -- 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)
+ -- (e.g., -mcpu=ultrasparc). GCC picks the "best" -mcpu flag
+ -- regardless of the ordering.
+ --
+ -- This is a temporary hack.
+ (if platformArch (targetPlatform dflags) == ArchSPARC
+ then [SysTools.Option "-mcpu=v9"]
+ else []) ++
+
+ [ SysTools.Option "-c"
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" (split_obj n)
+ , SysTools.FileOption "" (split_s n)
+ ])
+
+ io $ mapM_ assemble_file [1..n]
+
+ -- Note [pipeline-split-init]
+ -- If we have a stub file, it may contain constructor
+ -- functions for initialisation of this module. We can't
+ -- simply leave the stub as a separate object file, because it
+ -- will never be linked in: nothing refers to it. We need to
+ -- ensure that if we ever refer to the data in this module
+ -- that needs initialisation, then we also pull in the
+ -- initialisation routine.
+ --
+ -- To that end, we make a DANGEROUS ASSUMPTION here: the data
+ -- that needs to be initialised is all in the FIRST split
+ -- object. See Note [codegen-split-init].
+
+ PipeState{maybe_stub_o} <- getPipeState
+ case maybe_stub_o of
+ Nothing -> return ()
+ Just stub_o -> io $ do
+ tmp_split_1 <- newTempName dflags osuf
+ let split_1 = split_obj 1
+ copyFile split_1 tmp_split_1
+ removeFile split_1
+ joinObjectFiles dflags [tmp_split_1, stub_o] split_1
+ -- join them into a single .o file
+ io $ joinObjectFiles dflags (map split_obj [1..n]) output_fn
+
+ return (next_phase, output_fn)
+
+-----------------------------------------------------------------------------
+-- LlvmOpt phase
+
+runPhase LlvmOpt input_fn dflags
+ = do
+ let lo_opts = getOpts dflags opt_lo
+ let opt_lvl = max 0 (min 2 $ optLevel dflags)
+ -- don't specify anything if user has specified commands. We do this for
+ -- opt but not llc since opt is very specifically for optimisation passes
+ -- only, so if the user is passing us extra options we assume they know
+ -- what they are doing and don't get in the way.
+ let optFlag = if null lo_opts
+ then [SysTools.Option (llvmOpts !! opt_lvl)]
+ else []
+
+ output_fn <- phaseOutputFilename LlvmLlc
+
+ io $ SysTools.runLlvmOpt dflags
+ ([ SysTools.FileOption "" input_fn,
+ SysTools.Option "-o",
+ SysTools.FileOption "" output_fn]
+ ++ optFlag
+ ++ map SysTools.Option lo_opts)
+
+ return (LlvmLlc, output_fn)
+ where
+ -- we always (unless -optlo specified) run Opt since we rely on it to
+ -- fix up some pretty big deficiencies in the code we generate
+ llvmOpts = ["-mem2reg", "-O1", "-O2"]
+
+-----------------------------------------------------------------------------
+-- LlvmLlc phase
+
+runPhase LlvmLlc input_fn dflags
+ = do
+ let lc_opts = getOpts dflags opt_lc
+ opt_lvl = max 0 (min 2 $ optLevel dflags)
+ rmodel | opt_PIC = "pic"
+ | not opt_Static = "dynamic-no-pic"
+ | otherwise = "static"
+
+ output_fn <- phaseOutputFilename LlvmMangle
+
+ io $ SysTools.runLlvmLlc dflags
+ ([ SysTools.Option (llvmOpts !! opt_lvl),
+ SysTools.Option $ "-relocation-model=" ++ rmodel,
+ SysTools.FileOption "" input_fn,
+ SysTools.Option "-o", SysTools.FileOption "" output_fn]
+ ++ map SysTools.Option lc_opts)
+
+ return (LlvmMangle, output_fn)
+ where
+ -- Bug in LLVM at O3 on OSX.
+ llvmOpts = if platformOS (targetPlatform dflags) == OSDarwin
+ then ["-O1", "-O2", "-O2"]
+ else ["-O1", "-O2", "-O3"]
+
+-----------------------------------------------------------------------------
+-- LlvmMangle phase
+
+runPhase LlvmMangle input_fn _dflags
+ = do
+ output_fn <- phaseOutputFilename As
+ io $ llvmFixupAsm input_fn output_fn
+ return (As, output_fn)
+
+-----------------------------------------------------------------------------
+-- merge in stub objects
+
+runPhase MergeStub input_fn dflags
+ = do
+ PipeState{maybe_stub_o} <- getPipeState
+ output_fn <- phaseOutputFilename StopLn
+ case maybe_stub_o of
+ Nothing ->
+ panic "runPhase(MergeStub): no stub"
+ Just stub_o -> do
+ io $ joinObjectFiles dflags [input_fn, stub_o] output_fn
+ return (StopLn, output_fn)
+
+-- warning suppression
+runPhase other _input_fn _dflags =
+ panic ("runPhase: don't know how to run phase " ++ show other)
+
+maybeMergeStub :: CompPipeline Phase
+maybeMergeStub
+ = do
+ PipeState{maybe_stub_o} <- getPipeState
+ if isJust maybe_stub_o then return MergeStub else return StopLn
-----------------------------------------------------------------------------
-- MoveBinary sort-of-phase
-- After having produced a binary, move it somewhere else and generate a
--- wrapper script calling the binary. Currently, we need this only in
+-- wrapper script calling the binary. Currently, we need this only in
-- a parallel way (i.e. in GUM), because PVM expects the binary in a
-- central directory.
--- This is called from staticLink below, after linking. I haven't made it
+-- This is called from linkBinary below, after linking. I haven't made it
-- a separate phase to minimise interfering with other modules, and
-- we don't need the generality of a phase (MoveBinary is always
-- done after linking and makes only sense in a parallel setup) -- HWL
+runPhase_MoveBinary :: DynFlags -> FilePath -> IO Bool
runPhase_MoveBinary dflags input_fn
- = do
+ | WayPar `elem` (wayNames dflags) && not opt_Static =
+ panic ("Don't know how to combine PVM wrapper and dynamic wrapper")
+ | WayPar `elem` (wayNames dflags) = do
let sysMan = pgm_sysman dflags
pvm_root <- getEnv "PVM_ROOT"
pvm_arch <- getEnv "PVM_ARCH"
- let
+ let
pvm_executable_base = "=" ++ input_fn
pvm_executable = pvm_root ++ "/bin/" ++ pvm_arch ++ "/" ++ pvm_executable_base
-- nuke old binary; maybe use configur'ed names for cp and rm?
- Panic.try (removeFile pvm_executable)
+ _ <- tryIO (removeFile pvm_executable)
-- move the newly created binary into PVM land
copy dflags "copying PVM executable" input_fn pvm_executable
-- generate a wrapper script for running a parallel prg under PVM
writeFile input_fn (mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan)
- return True
+ return True
+ | otherwise = return True
+
+mkExtraCObj :: DynFlags -> String -> IO FilePath
+mkExtraCObj dflags xs
+ = do cFile <- newTempName dflags "c"
+ oFile <- newTempName dflags "o"
+ writeFile cFile xs
+ let rtsDetails = getPackageDetails (pkgState dflags) rtsPackageId
+ SysTools.runCc dflags
+ ([Option "-c",
+ FileOption "" cFile,
+ Option "-o",
+ FileOption "" oFile] ++
+ map (FileOption "-I") (includeDirs rtsDetails))
+ return oFile
+
+mkExtraObjToLinkIntoBinary :: DynFlags -> [PackageId] -> IO FilePath
+mkExtraObjToLinkIntoBinary dflags dep_packages = do
+ link_info <- getLinkInfo dflags dep_packages
+ mkExtraCObj dflags (showSDoc (vcat [rts_opts_enabled,
+ extra_rts_opts,
+ link_opts link_info]
+ <> char '\n')) -- final newline, to
+ -- keep gcc happy
+
+ where
+ mk_rts_opts_enabled val
+ = vcat [text "#include \"Rts.h\"",
+ text "#include \"RtsOpts.h\"",
+ text "const RtsOptsEnabledEnum rtsOptsEnabled = " <>
+ text val <> semi ]
+
+ rts_opts_enabled = case rtsOptsEnabled dflags of
+ RtsOptsNone -> mk_rts_opts_enabled "RtsOptsNone"
+ RtsOptsSafeOnly -> empty -- The default
+ RtsOptsAll -> mk_rts_opts_enabled "RtsOptsAll"
+
+ extra_rts_opts = case rtsOpts dflags of
+ Nothing -> empty
+ Just opts -> text "char *ghc_rts_opts = " <> text (show opts) <> semi
+
+ link_opts info
+ | isDarwinTarget = empty
+ | isWindowsTarget = empty
+ | otherwise = hcat [
+ text "__asm__(\"\\t.section ", text ghcLinkInfoSectionName,
+ text ",\\\"\\\",@note\\n",
+ text "\\t.ascii \\\"", info', text "\\\"\\n\");" ]
+ where
+ -- we need to escape twice: once because we're inside a C string,
+ -- and again because we're inside an asm string.
+ info' = text $ (escape.escape) info
+
+ escape :: String -> String
+ escape = concatMap (charToC.fromIntegral.ord)
+
+-- The "link info" is a string representing the parameters of the
+-- link. We save this information in the binary, and the next time we
+-- link, if nothing else has changed, we use the link info stored in
+-- the existing binary to decide whether to re-link or not.
+getLinkInfo :: DynFlags -> [PackageId] -> IO String
+getLinkInfo dflags dep_packages = do
+ package_link_opts <- getPackageLinkOpts dflags dep_packages
+#ifdef darwin_TARGET_OS
+ pkg_frameworks <- getPackageFrameworks dflags dep_packages
+#endif
+ extra_ld_inputs <- readIORef v_Ld_inputs
+ let
+ link_info = (package_link_opts,
+#ifdef darwin_TARGET_OS
+ pkg_frameworks,
+#endif
+ rtsOpts dflags,
+ rtsOptsEnabled dflags,
+ dopt Opt_NoHsMain dflags,
+ extra_ld_inputs,
+ getOpts dflags opt_l)
+ --
+ return (show link_info)
-- generates a Perl skript starting a parallel prg under PVM
mk_pvm_wrapper_script :: String -> String -> String -> String
mk_pvm_wrapper_script pvm_executable pvm_executable_base sysMan = unlines $
[
- "eval 'exec perl -S $0 ${1+\"$@\"}'",
+ "eval 'exec perl -S $0 ${1+\"$@\"}'",
" if $running_under_some_shell;",
"# =!=!=!=!=!=!=!=!=!=!=!",
"# This script is automatically generated: DO NOT EDIT!!!",
"",
"args: while ($a = shift(@ARGV)) {",
" if ( $a eq '+RTS' ) {",
- " $in_RTS_args = 1;",
+ " $in_RTS_args = 1;",
" } elsif ( $a eq '-RTS' ) {",
- " $in_RTS_args = 0;",
+ " $in_RTS_args = 0;",
" }",
" if ( $a eq '-d' && $in_RTS_args ) {",
- " $debug = '-';",
+ " $debug = '-';",
" } elsif ( $a =~ /^-qN(\\d+)/ && $in_RTS_args ) {",
- " $nprocessors = $1;",
+ " $nprocessors = $1;",
" } elsif ( $a =~ /^-qp(\\d+)/ && $in_RTS_args ) {",
- " $nprocessors = $1;",
+ " $nprocessors = $1;",
" } else {",
- " push(@nonPVM_args, $a);",
+ " push(@nonPVM_args, $a);",
" }",
"}",
"",
]
-----------------------------------------------------------------------------
--- Complain about non-dynamic flags in OPTIONS pragmas
-
-checkProcessArgsResult flags filename
- = do when (notNull flags) (throwDyn (ProgramError (
- showSDoc (hang (text filename <> char ':')
- 4 (text "unknown flags in {-# OPTIONS #-} pragma:" <+>
- hsep (map text flags)))
- )))
-
------------------------------------------------------------------------------
-- Look for the /* GHC_PACKAGES ... */ comment at the top of a .hc file
getHCFilePackages :: FilePath -> IO [PackageId]
l <- hGetLine h
case l of
'/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
- return (map stringToPackageId (words rest))
+ return (map stringToPackageId (words rest))
_other ->
- return []
+ return []
-----------------------------------------------------------------------------
-- Static linking, of .o files
-- The list of packages passed to link is the list of packages on
-- which this program depends, as discovered by the compilation
-- manager. It is combined with the list of packages that the user
--- specifies on the command line with -package flags.
+-- specifies on the command line with -package flags.
--
-- In one-shot linking mode, we can't discover the package
-- dependencies (because we haven't actually done any compilation or
-- read any interface files), so the user must explicitly specify all
-- the packages.
-staticLink :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
-staticLink dflags o_files dep_packages = do
- let verb = getVerbFlag dflags
+linkBinary :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
+linkBinary dflags o_files dep_packages = do
+ let verbFlags = getVerbFlags dflags
output_fn = exeFileName dflags
-- get the full list of packages to link with, by combining the
-- dependencies, and eliminating duplicates.
pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
- let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
+ let pkg_lib_path_opts = concat (map get_pkg_lib_path_opts pkg_lib_paths)
+#ifdef elf_OBJ_FORMAT
+ get_pkg_lib_path_opts l | (dynLibLoader dflags)==SystemDependent && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
+ | otherwise = ["-L" ++ l]
+#else
+ get_pkg_lib_path_opts l = ["-L" ++ l]
+#endif
let lib_paths = libraryPaths dflags
let lib_path_opts = map ("-L"++) lib_paths
+ -- The C "main" function is not in the rts but in a separate static
+ -- library libHSrtsmain.a that sits next to the rts lib files. Assuming
+ -- we're using a Haskell main function then we need to link it in.
+ let no_hs_main = dopt Opt_NoHsMain dflags
+ let main_lib | no_hs_main = []
+ | otherwise = [ "-lHSrtsmain" ]
+
+ extraLinkObj <- mkExtraObjToLinkIntoBinary dflags dep_packages
+
pkg_link_opts <- getPackageLinkOpts dflags dep_packages
#ifdef darwin_TARGET_OS
pkg_frameworks <- getPackageFrameworks dflags dep_packages
let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_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
+ -- reverse because they're added in reverse order from the cmd line
#endif
-
- -- probably _stub.o files
+ -- probably _stub.o files
extra_ld_inputs <- readIORef v_Ld_inputs
- -- opts from -optl-<blah> (including -l<blah> options)
+ -- opts from -optl-<blah> (including -l<blah> options)
let extra_ld_opts = getOpts dflags opt_l
let ways = wayNames dflags
-- 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 = [
+ debug_opts | WayDebug `elem` ways = [
#if defined(HAVE_LIBBFD)
- "-lbfd", "-liberty"
+ "-lbfd", "-liberty"
#endif
- ]
- | otherwise = []
+ ]
+ | otherwise = []
let
- thread_opts | WayThreaded `elem` ways = [
-#if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
- "-lpthread"
+ thread_opts | WayThreaded `elem` ways = [
+#if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS) && !defined(openbsd_TARGET_OS) && !defined(haiku_TARGET_OS)
+ "-lpthread"
#endif
#if defined(osf3_TARGET_OS)
- , "-lexc"
+ , "-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_ld_inputs
- ++ lib_path_opts
- ++ extra_ld_opts
+ ]
+ | otherwise = []
+
+ rc_objs <- maybeCreateManifest dflags output_fn
+
+ SysTools.runLink dflags (
+ map SysTools.Option verbFlags
+ ++ [ SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ ]
+ ++ map SysTools.Option (
+ []
+
+ -- Permit the linker to auto link _symbol to _imp_symbol.
+ -- This lets us link against DLLs without needing an "import library".
+ ++ (if platformOS (targetPlatform dflags) == OSMinGW32
+ then ["-Wl,--enable-auto-import"]
+ else [])
+
+ ++ o_files
+ ++ extra_ld_inputs
+ ++ lib_path_opts
+ ++ extra_ld_opts
+ ++ rc_objs
#ifdef darwin_TARGET_OS
- ++ framework_path_opts
- ++ framework_opts
+ ++ framework_path_opts
+ ++ framework_opts
#endif
- ++ pkg_lib_path_opts
- ++ pkg_link_opts
+ ++ pkg_lib_path_opts
+ ++ main_lib
+ ++ [extraLinkObj]
+ ++ pkg_link_opts
#ifdef darwin_TARGET_OS
- ++ pkg_framework_path_opts
- ++ pkg_framework_opts
+ ++ pkg_framework_path_opts
+ ++ pkg_framework_opts
#endif
- ++ debug_opts
- ++ thread_opts
- ))
+ ++ debug_opts
+ ++ thread_opts
+ ))
-- parallel only: move binary to another dir -- HWL
- when (WayPar `elem` ways)
- (do success <- runPhase_MoveBinary dflags output_fn
- if success then return ()
- else throwDyn (InstallationError ("cannot move binary to PVM dir")))
+ success <- runPhase_MoveBinary dflags output_fn
+ if success then return ()
+ else ghcError (InstallationError ("cannot move binary"))
exeFileName :: DynFlags -> FilePath
exeFileName dflags
- | Just s <- outputFile dflags =
-#if defined(mingw32_HOST_OS)
- if null (suffixOf s)
- then s `joinFileExt` "exe"
- else s
+ | Just s <- outputFile dflags =
+ if platformOS (targetPlatform dflags) == OSMinGW32
+ then if null (takeExtension s)
+ then s <.> "exe"
+ else s
+ else s
+ | otherwise =
+ if platformOS (targetPlatform dflags) == OSMinGW32
+ then "main.exe"
+ else "a.out"
+
+maybeCreateManifest
+ :: DynFlags
+ -> FilePath -- filename of executable
+ -> IO [FilePath] -- extra objects to embed, maybe
+#ifndef mingw32_TARGET_OS
+maybeCreateManifest _ _ = do
+ return []
#else
- s
-#endif
- | otherwise =
-#if defined(mingw32_HOST_OS)
- "main.exe"
-#else
- "a.out"
+maybeCreateManifest dflags exe_filename = do
+ if not (dopt Opt_GenManifest dflags) then return [] else do
+
+ let manifest_filename = exe_filename <.> "manifest"
+
+ writeFile manifest_filename $
+ "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"++
+ " <assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestVersion=\"1.0\">\n"++
+ " <assemblyIdentity version=\"1.0.0.0\"\n"++
+ " processorArchitecture=\"X86\"\n"++
+ " name=\"" ++ dropExtension exe_filename ++ "\"\n"++
+ " type=\"win32\"/>\n\n"++
+ " <trustInfo xmlns=\"urn:schemas-microsoft-com:asm.v3\">\n"++
+ " <security>\n"++
+ " <requestedPrivileges>\n"++
+ " <requestedExecutionLevel level=\"asInvoker\" uiAccess=\"false\"/>\n"++
+ " </requestedPrivileges>\n"++
+ " </security>\n"++
+ " </trustInfo>\n"++
+ "</assembly>\n"
+
+ -- Windows will find the manifest file if it is named foo.exe.manifest.
+ -- However, for extra robustness, and so that we can move the binary around,
+ -- we can embed the manifest in the binary itself using windres:
+ if not (dopt Opt_EmbedManifest dflags) then return [] else do
+
+ rc_filename <- newTempName dflags "rc"
+ rc_obj_filename <- newTempName dflags (objectSuf dflags)
+
+ writeFile rc_filename $
+ "1 24 MOVEABLE PURE " ++ show manifest_filename ++ "\n"
+ -- magic numbers :-)
+ -- show is a bit hackish above, but we need to escape the
+ -- backslashes in the path.
+
+ let wr_opts = getOpts dflags opt_windres
+ runWindres dflags $ map SysTools.Option $
+ ["--input="++rc_filename,
+ "--output="++rc_obj_filename,
+ "--output-format=coff"]
+ ++ wr_opts
+ -- no FileOptions here: windres doesn't like seeing
+ -- backslashes, apparently
+
+ removeFile manifest_filename
+
+ return [rc_obj_filename]
#endif
------------------------------------------------------------------------------
--- Making a DLL (only for Win32)
-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
+linkDynLib :: DynFlags -> [String] -> [PackageId] -> IO ()
+linkDynLib dflags o_files dep_packages = do
+ let verbFlags = getVerbFlags dflags
let o_file = outputFile dflags
- let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
- pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
- let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
+ pkgs <- getPreloadPackagesAnd dflags dep_packages
+
+ let pkg_lib_paths = collectLibraryPaths pkgs
+ let pkg_lib_path_opts = concatMap get_pkg_lib_path_opts pkg_lib_paths
+#ifdef elf_OBJ_FORMAT
+ get_pkg_lib_path_opts l | (dynLibLoader dflags)==SystemDependent && not opt_Static = ["-L" ++ l, "-Wl,-rpath", "-Wl," ++ l]
+ | otherwise = ["-L" ++ l]
+#else
+ get_pkg_lib_path_opts l = ["-L" ++ l]
+#endif
let lib_paths = libraryPaths dflags
let lib_path_opts = map ("-L"++) lib_paths
- pkg_link_opts <- getPackageLinkOpts dflags dep_packages
+ -- We don't want to link our dynamic libs against the RTS package,
+ -- because the RTS lib comes in several flavours and we want to be
+ -- able to pick the flavour when a binary is linked.
+ -- On Windows we need to link the RTS import lib as Windows does
+ -- not allow undefined symbols.
+ -- The RTS library path is still added to the library search path
+ -- above in case the RTS is being explicitly linked in (see #3807).
+#if !defined(mingw32_HOST_OS)
+ let pkgs_no_rts = filter ((/= rtsPackageId) . packageConfigId) pkgs
+#else
+ let pkgs_no_rts = pkgs
+#endif
+ let pkg_link_opts = collectLinkOpts dflags pkgs_no_rts
- -- probably _stub.o files
+ -- probably _stub.o files
extra_ld_inputs <- readIORef v_Ld_inputs
- -- opts from -optdll-<blah>
- let extra_ld_opts = getOpts dflags opt_dll
-
- let pstate = pkgState dflags
- rts_pkg = getPackageDetails pstate rtsPackageId
- base_pkg = getPackageDetails pstate basePackageId
-
- let extra_os = if static || no_hs_main
- then []
- else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o",
- head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ]
-
- let (md_c_flags, _) = machdepCCOpts dflags
- SysTools.runMkDLL dflags
- ([ SysTools.Option verb
- , SysTools.Option "-o"
- , SysTools.FileOption "" output_fn
- ]
- ++ map SysTools.Option (
- md_c_flags
- ++ o_files
- ++ extra_os
- ++ [ "--target=i386-mingw32" ]
- ++ extra_ld_inputs
- ++ lib_path_opts
- ++ extra_ld_opts
- ++ pkg_lib_path_opts
- ++ pkg_link_opts
- ++ (if "--def" `elem` (concatMap words extra_ld_opts)
- then [ "" ]
- else [ "--export-all" ])
- ))
+ let extra_ld_opts = getOpts dflags opt_l
+
+ extraLinkObj <- mkExtraObjToLinkIntoBinary dflags dep_packages
+#if defined(mingw32_HOST_OS)
+ -----------------------------------------------------------------------------
+ -- Making a DLL
+ -----------------------------------------------------------------------------
+ let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
+
+ SysTools.runLink dflags (
+ map SysTools.Option verbFlags
+ ++ [ SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ , SysTools.Option "-shared"
+ ] ++
+ [ SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
+ | dopt Opt_SharedImplib dflags
+ ]
+ ++ map (SysTools.FileOption "") o_files
+ ++ map SysTools.Option (
+
+ -- Permit the linker to auto link _symbol to _imp_symbol
+ -- This lets us link against DLLs without needing an "import library"
+ ["-Wl,--enable-auto-import"]
+
+ ++ extra_ld_inputs
+ ++ lib_path_opts
+ ++ extra_ld_opts
+ ++ pkg_lib_path_opts
+ ++ [extraLinkObj]
+ ++ pkg_link_opts
+ ))
+#elif defined(darwin_TARGET_OS)
+ -----------------------------------------------------------------------------
+ -- Making a darwin dylib
+ -----------------------------------------------------------------------------
+ -- About the options used for Darwin:
+ -- -dynamiclib
+ -- Apple's way of saying -shared
+ -- -undefined dynamic_lookup:
+ -- Without these options, we'd have to specify the correct dependencies
+ -- for each of the dylibs. Note that we could (and should) do without this
+ -- for all libraries except the RTS; all we need to do is to pass the
+ -- correct HSfoo_dyn.dylib files to the link command.
+ -- This feature requires Mac OS X 10.3 or later; there is a similar feature,
+ -- -flat_namespace -undefined suppress, which works on earlier versions,
+ -- but it has other disadvantages.
+ -- -single_module
+ -- Build the dynamic library as a single "module", i.e. no dynamic binding
+ -- nonsense when referring to symbols from within the library. The NCG
+ -- assumes that this option is specified (on i386, at least).
+ -- -install_name
+ -- Mac OS/X stores the path where a dynamic library is (to be) installed
+ -- in the library itself. It's called the "install name" of the library.
+ -- Then any library or executable that links against it before it's
+ -- installed will search for it in its ultimate install location. By
+ -- default we set the install name to the absolute path at build time, but
+ -- it can be overridden by the -dylib-install-name option passed to ghc.
+ -- Cabal does this.
+ -----------------------------------------------------------------------------
+
+ let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
+
+ instName <- case dylibInstallName dflags of
+ Just n -> return n
+ Nothing -> do
+ pwd <- getCurrentDirectory
+ return $ pwd `combine` output_fn
+ SysTools.runLink dflags (
+ map SysTools.Option verbFlags
+ ++ [ SysTools.Option "-dynamiclib"
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ ]
+ ++ map SysTools.Option (
+ o_files
+ ++ [ "-undefined", "dynamic_lookup", "-single_module",
+#if !defined(x86_64_TARGET_ARCH)
+ "-Wl,-read_only_relocs,suppress",
+#endif
+ "-install_name", instName ]
+ ++ extra_ld_inputs
+ ++ lib_path_opts
+ ++ extra_ld_opts
+ ++ pkg_lib_path_opts
+ ++ [extraLinkObj]
+ ++ pkg_link_opts
+ ))
+#else
+ -----------------------------------------------------------------------------
+ -- Making a DSO
+ -----------------------------------------------------------------------------
+
+ let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
+ let buildingRts = thisPackage dflags == rtsPackageId
+ let bsymbolicFlag = if buildingRts
+ then -- -Bsymbolic breaks the way we implement
+ -- hooks in the RTS
+ []
+ else -- we need symbolic linking to resolve
+ -- non-PIC intra-package-relocations
+ ["-Wl,-Bsymbolic"]
+
+ SysTools.runLink dflags (
+ map SysTools.Option verbFlags
+ ++ [ SysTools.Option "-o"
+ , SysTools.FileOption "" output_fn
+ ]
+ ++ map SysTools.Option (
+ o_files
+ ++ [ "-shared" ]
+ ++ bsymbolicFlag
+ -- Set the library soname. We use -h rather than -soname as
+ -- Solaris 10 doesn't support the latter:
+ ++ [ "-Wl,-h," ++ takeFileName output_fn ]
+ ++ extra_ld_inputs
+ ++ lib_path_opts
+ ++ extra_ld_opts
+ ++ pkg_lib_path_opts
+ ++ [extraLinkObj]
+ ++ pkg_link_opts
+ ))
+#endif
-- -----------------------------------------------------------------------------
-- Running CPP
pkg_include_dirs <- getPackageIncludePath dflags []
let include_paths = foldr (\ x xs -> "-I" : x : xs) []
- (cmdline_include_paths ++ pkg_include_dirs)
+ (cmdline_include_paths ++ pkg_include_dirs)
- let verb = getVerbFlag dflags
+ let verbFlags = getVerbFlags dflags
let cc_opts
- | not include_cc_opts = []
- | otherwise = (optc ++ md_c_flags)
- where
- optc = getOpts dflags opt_c
- (md_c_flags, _) = machdepCCOpts dflags
+ | include_cc_opts = getOpts dflags opt_c
+ | otherwise = []
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
-
+ | 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 ( map SysTools.Option verbFlags
+ ++ map SysTools.Option include_paths
+ ++ map SysTools.Option hsSourceCppOpts
+ ++ map SysTools.Option target_defs
+ ++ map SysTools.Option hscpp_opts
+ ++ map SysTools.Option cc_opts
+ ++ [ 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
+ ])
+
+hsSourceCppOpts :: [String]
-- Default CPP defines in Haskell source
hsSourceCppOpts =
- [ "-D__HASKELL1__="++cHaskell1Version
- , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
- , "-D__HASKELL98__"
- , "-D__CONCURRENT_HASKELL__"
- ]
+ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
+-- ---------------------------------------------------------------------------
+-- join object files into a single relocatable object file, using ld -r
+
+joinObjectFiles :: DynFlags -> [FilePath] -> FilePath -> IO ()
+joinObjectFiles dflags o_files output_fn = do
+ let ld_r args = SysTools.runLink dflags ([
+ SysTools.Option "-nostdlib",
+ SysTools.Option "-nodefaultlibs",
+ SysTools.Option "-Wl,-r",
+ SysTools.Option ld_build_id,
+ SysTools.Option ld_x_flag,
+ SysTools.Option "-o",
+ SysTools.FileOption "" output_fn ]
+ ++ args)
+
+ ld_x_flag | null cLD_X = ""
+ | otherwise = "-Wl,-x"
+
+ -- suppress the generation of the .note.gnu.build-id section,
+ -- which we don't need and sometimes causes ld to emit a
+ -- warning:
+ ld_build_id | cLdHasBuildId == "YES" = "-Wl,--build-id=none"
+ | otherwise = ""
+
+ if cLdIsGNULd == "YES"
+ then do
+ script <- newTempName dflags "ldscript"
+ writeFile script $ "INPUT(" ++ unwords o_files ++ ")"
+ ld_r [SysTools.FileOption "" script]
+ else do
+ ld_r (map (SysTools.FileOption "") o_files)
-- -----------------------------------------------------------------------------
-- Misc.
hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
-hscNextPhase dflags HsBootFile hsc_lang = StopLn
-hscNextPhase dflags other hsc_lang =
+hscNextPhase _ HsBootFile _ = StopLn
+hscNextPhase dflags _ 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
+ HscC -> HCc
+ HscAsm | dopt Opt_SplitObjs dflags -> SplitMangle
+ | otherwise -> As
+ HscLlvm -> LlvmOpt
+ HscNothing -> StopLn
+ HscInterpreted -> StopLn
+
projects / ghc-hetmet.git / blobdiff