--
-- GHC Driver
--
--- (c) The University of Glasgow 2002
+-- (c) The University of Glasgow 2005
--
-----------------------------------------------------------------------------
-#include "../includes/config.h"
-
module DriverPipeline (
+ -- Run a series of compilation steps in a pipeline, for a
+ -- collection of source files.
+ oneShot, compileFile,
-- Interfaces for the batch-mode driver
- genPipeline, runPipeline, pipeLoop, staticLink,
+ staticLink,
-- Interfaces for the compilation manager (interpreted/batch-mode)
preprocess,
link,
-- DLL building
- doMkDLL
+ doMkDLL,
+
) where
#include "HsVersions.h"
import Packages
-import GetImports
-import DriverState
-import DriverUtil
-import DriverMkDepend
+import HeaderInfo
import DriverPhases
-import DriverFlags
import SysTools ( newTempName, addFilesToClean, getSysMan, copy )
import qualified SysTools
import HscMain
import Outputable
import Module
import ErrUtils
-import CmdLineOpts
+import DynFlags
+import StaticFlags ( v_Ld_inputs, opt_Static, WayName(..) )
import Config
import Panic
import Util
+import StringBuffer ( hGetStringBuffer )
import BasicTypes ( SuccessFlag(..) )
import Maybes ( expectJust )
-
-import ParserCoreUtils ( getCoreModuleName )
+import ParserCoreUtils ( getCoreModuleName )
+import SrcLoc ( unLoc )
+import SrcLoc ( Located(..) )
import EXCEPTION
-import DATA_IOREF ( readIORef, writeIORef )
+import DATA_IOREF ( readIORef, writeIORef, IORef )
+import GLAEXTS ( Int(..) )
-#ifdef GHCI
-import Time ( getClockTime )
-#endif
import Directory
import System
import IO
import Monad
+import Data.List ( isSuffixOf )
import Maybe
-- 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 :: FilePath -> IO FilePath
-preprocess filename =
- ASSERT(haskellish_src_file filename)
- do restoreDynFlags -- Restore to state of last save
- let fInfo = (filename, getFileSuffix filename)
- pipeline <- genPipeline (StopBefore Hsc) ("preprocess") False
- defaultHscLang fInfo
- (fn,_) <- runPipeline pipeline fInfo
- False{-no linking-} False{-no -o flag-}
- return fn
+preprocess :: DynFlags -> (FilePath, Maybe Phase) -> IO (DynFlags, FilePath)
+preprocess dflags (filename, mb_phase) =
+ ASSERT2(isJust mb_phase || isHaskellSrcFilename filename, text filename)
+ runPipeline anyHsc dflags (filename, mb_phase) Temporary Nothing{-no ModLocation-}
-- ---------------------------------------------------------------------------
-- Compile
-- reading the OPTIONS pragma from the source file, and passing the
-- output of hsc through the C compiler.
--- The driver sits between 'compile' and 'hscMain', translating calls
--- to the former into calls to the latter, and results from the latter
--- into results from the former. It does things like preprocessing
--- the .hs file if necessary, and compiling up the .stub_c files to
--- generate Linkables.
-
-- NB. No old interface can also mean that the source has changed.
-compile :: GhciMode -- distinguish batch from interactive
- -> Module
- -> ModLocation
- -> Bool -- True <=> source unchanged
- -> Bool -- True <=> have object
- -> Maybe ModIface -- old interface, if available
- -> HomePackageTable -- For home-module stuff
- -> PersistentCompilerState -- persistent compiler state
+compile :: HscEnv
+ -> ModSummary
+ -> Maybe Linkable -- Just linkable <=> source unchanged
+ -> Maybe ModIface -- Old interface, if available
+ -> Int -> Int
-> IO CompResult
data CompResult
- = CompOK PersistentCompilerState -- Updated PCS
- ModDetails -- New details
- ModIface -- New iface
- (Maybe Linkable) -- New code; Nothing => compilation was not reqd
- -- (old code is still valid)
+ = CompOK ModDetails -- New details
+ ModIface -- New iface
+ (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable
- | CompErrs PersistentCompilerState -- Updated PCS
+ | CompErrs
-compile ghci_mode this_mod location
- source_unchanged have_object
- old_iface hpt pcs = do
+compile hsc_env mod_summary maybe_old_linkable old_iface mod_index nmods = do
- dyn_flags <- restoreDynFlags -- Restore to the state of the last save
+ let dflags0 = ms_hspp_opts mod_summary
+ this_mod = ms_mod mod_summary
+ src_flavour = ms_hsc_src mod_summary
- showPass dyn_flags
- (showSDoc (text "Compiling" <+> ppr this_mod))
+ have_object
+ | Just l <- maybe_old_linkable, isObjectLinkable l = True
+ | otherwise = False
- let verb = verbosity dyn_flags
+ 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 = expectJust "compile:hspp" (ml_hspp_file location)
- let mod_name = moduleName this_mod
+ let input_fnpp = ms_hspp_file mod_summary
- when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
+ debugTraceMsg dflags0 2 (text "compile: input file" <+> text input_fnpp)
- opts <- getOptionsFromSource input_fnpp
- processArgs dynamic_flags opts []
- dyn_flags <- getDynFlags
+ let (basename, _) = splitFilename input_fn
- let hsc_lang = hscLang dyn_flags
- (basename, _) = splitFilename input_fn
-
- keep_hc <- readIORef v_Keep_hc_files
-#ifdef ILX
- keep_il <- readIORef v_Keep_il_files
-#endif
- keep_s <- readIORef v_Keep_s_files
-
- output_fn <-
- case hsc_lang of
- HscAsm | keep_s -> return (basename ++ '.':phaseInputExt As)
- | otherwise -> newTempName (phaseInputExt As)
- HscC | keep_hc -> return (basename ++ '.':phaseInputExt HCc)
- | otherwise -> newTempName (phaseInputExt HCc)
- HscJava -> newTempName "java" -- ToDo
-#ifdef ILX
- HscILX | keep_il -> return (basename ++ '.':phaseInputExt Ilasm)
- | otherwise -> newTempName (phaseInputExt Ilx2Il)
-#endif
- HscInterpreted -> return (error "no output file")
- HscNothing -> return (error "no output file")
+ -- 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
+ old_paths = includePaths dflags0
+ dflags = dflags0 { includePaths = current_dir : old_paths }
+
+ -- Figure out what lang we're generating
+ let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
+ -- ... 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 dflags next_phase
+ Temporary basename next_phase (Just location)
- let dyn_flags' = dyn_flags { hscOutName = output_fn,
- hscStubCOutName = basename ++ "_stub.c",
- hscStubHOutName = basename ++ "_stub.h",
+ let dflags' = dflags { hscTarget = hsc_lang,
+ hscOutName = output_fn,
extCoreName = basename ++ ".hcr" }
-- -no-recomp should also work with --make
- do_recomp <- readIORef v_Recomp
- let source_unchanged' = source_unchanged && do_recomp
- hsc_env = HscEnv { hsc_mode = ghci_mode,
- hsc_dflags = dyn_flags',
- hsc_HPT = hpt }
-
+ let do_recomp = dopt Opt_RecompChecking dflags
+ source_unchanged = isJust maybe_old_linkable && do_recomp
+ hsc_env' = hsc_env { hsc_dflags = dflags' }
+ object_filename = ml_obj_file location
+
+ let getStubLinkable False = return []
+ getStubLinkable True
+ = do stub_o <- compileStub dflags' this_mod location
+ return [ DotO stub_o ]
+
+ handleBatch (HscNoRecomp, iface, details)
+ = ASSERT (isJust maybe_old_linkable)
+ return (CompOK details iface maybe_old_linkable)
+ handleBatch (HscRecomp hasStub, iface, details)
+ | isHsBoot src_flavour
+ = return (CompOK details iface Nothing)
+ | otherwise
+ = do stub_unlinked <- getStubLinkable hasStub
+ (hs_unlinked, unlinked_time) <-
+ case hsc_lang of
+ HscNothing
+ -> return ([], ms_hs_date mod_summary)
+ -- We're in --make mode: finish the compilation pipeline.
+ _other
+ -> do runPipeline StopLn dflags (output_fn,Nothing) Persistent
+ (Just location)
+ -- The object filename comes from the ModLocation
+ o_time <- getModificationTime object_filename
+ return ([DotO object_filename], o_time)
+ let linkable = LM unlinked_time this_mod
+ (hs_unlinked ++ stub_unlinked)
+ return (CompOK details iface (Just linkable))
+
+ handleInterpreted (InteractiveNoRecomp, iface, details)
+ = ASSERT (isJust maybe_old_linkable)
+ return (CompOK details iface maybe_old_linkable)
+ handleInterpreted (InteractiveRecomp hasStub comp_bc, iface, details)
+ = do stub_unlinked <- getStubLinkable hasStub
+ let hs_unlinked = [BCOs comp_bc]
+ unlinked_time = ms_hs_date mod_summary
+ -- Why do we use the timestamp of the source file here,
+ -- rather than the current time? This works better in
+ -- the case where the local clock is out of sync
+ -- with the filesystem's clock. It's just as accurate:
+ -- if the source is modified, then the linkable will
+ -- be out of date.
+ let linkable = LM unlinked_time this_mod
+ (hs_unlinked ++ stub_unlinked)
+ return (CompOK details iface (Just linkable))
+
+ let runCompiler compiler handle
+ = do mbResult <- compiler hsc_env' mod_summary
+ source_unchanged old_iface
+ (Just (mod_index, nmods))
+ case mbResult of
+ Nothing -> return CompErrs
+ Just result -> handle result
-- run the compiler
- hsc_result <- hscMain hsc_env pcs this_mod location
- source_unchanged' have_object old_iface
-
- case hsc_result of
- HscFail pcs -> return (CompErrs pcs)
-
- HscNoRecomp pcs details iface -> return (CompOK pcs details iface Nothing)
-
- HscRecomp pcs details iface
- stub_h_exists stub_c_exists maybe_interpreted_code -> do
- let
- maybe_stub_o <- compileStub dyn_flags' stub_c_exists
- let stub_unlinked = case maybe_stub_o of
- Nothing -> []
- Just stub_o -> [ DotO stub_o ]
-
- (hs_unlinked, unlinked_time) <-
- case hsc_lang of
-
- -- in interpreted mode, just return the compiled code
- -- as our "unlinked" object.
- HscInterpreted ->
- case maybe_interpreted_code of
-#ifdef GHCI
- Just comp_bc -> do tm <- getClockTime
- return ([BCOs comp_bc], tm)
-#endif
- Nothing -> panic "compile: no interpreted code"
-
- -- we're in batch mode: finish the compilation pipeline.
- _other -> do pipe <- genPipeline (StopBefore Ln) "" True
- hsc_lang (output_fn, getFileSuffix output_fn)
- -- runPipeline takes input_fn so it can split off
- -- the base name and use it as the base of
- -- the output object file.
- let (basename, suffix) = splitFilename input_fn
- (o_file,_) <-
- pipeLoop pipe (output_fn, getFileSuffix output_fn)
- False False
- basename suffix
- o_time <- getModificationTime o_file
- return ([DotO o_file], o_time)
-
- let linkable = LM unlinked_time mod_name
- (hs_unlinked ++ stub_unlinked)
-
- return (CompOK pcs details iface (Just linkable))
+ case hsc_lang of
+ HscInterpreted | not (isHsBoot src_flavour) -- We can't compile boot files to
+ -- bytecode so don't even try.
+ -> runCompiler hscCompileInteractive handleInterpreted
+ HscNothing
+ -> runCompiler hscCompileNothing handleBatch
+ _other
+ -> runCompiler hscCompileBatch handleBatch
-----------------------------------------------------------------------------
-- stub .h and .c files (for foreign export support)
-compileStub dflags stub_c_exists
- | not stub_c_exists = return Nothing
- | stub_c_exists = do
+-- The _stub.c file is derived from the haskell source file, possibly taking
+-- into account the -stubdir option.
+--
+-- Consequently, we derive the _stub.o filename from the haskell object
+-- filename.
+--
+-- This isn't necessarily the same as the object filename we
+-- would get if we just compiled the _stub.c file using the pipeline.
+-- For example:
+--
+-- ghc src/A.hs -odir obj
+--
+-- results in obj/A.o, and src/A_stub.c. If we compile src/A_stub.c with
+-- -odir obj, we would get obj/src/A_stub.o, which is wrong; we want
+-- obj/A_stub.o.
+
+compileStub :: DynFlags -> Module -> ModLocation -> IO FilePath
+compileStub dflags mod location = do
+ let (o_base, o_ext) = splitFilename (ml_obj_file location)
+ stub_o = o_base ++ "_stub" `joinFileExt` o_ext
+
-- compile the _stub.c file w/ gcc
- let stub_c = hscStubCOutName dflags
- pipeline <- genPipeline (StopBefore Ln) "" True defaultHscLang (stub_c,"c")
- (stub_o,_) <- runPipeline pipeline (stub_c,"c") False{-no linking-}
- False{-no -o option-}
- return (Just stub_o)
+ let (stub_c,_) = mkStubPaths dflags mod location
+ runPipeline StopLn dflags (stub_c,Nothing)
+ (SpecificFile stub_o) Nothing{-no ModLocation-}
+
+ return stub_o
-- ---------------------------------------------------------------------------
-- Link
-link :: GhciMode -- interactive or batch
+link :: GhcMode -- interactive or batch
-> DynFlags -- dynamic flags
-> Bool -- attempt linking in batch mode?
-> HomePackageTable -- what to link
return Succeeded
#endif
-link Batch dflags batch_attempt_linking hpt
+link JustTypecheck dflags batch_attempt_linking hpt
+ = return Succeeded
+
+link BatchCompile dflags batch_attempt_linking hpt
| batch_attempt_linking
= do
let
pkg_deps = concatMap (dep_pkgs . mi_deps . hm_iface) home_mod_infos
-- the linkables to link
- linkables = map hm_linkable home_mod_infos
+ linkables = map (expectJust "link".hm_linkable) home_mod_infos
- when (verb >= 3) $ do
- hPutStrLn stderr "link: linkables are ..."
- hPutStrLn stderr (showSDoc (vcat (map ppr linkables)))
+ debugTraceMsg dflags 3 (text "link: linkables are ..." $$ vcat (map ppr linkables))
-- check for the -no-link flag
- omit_linking <- readIORef v_NoLink
- if omit_linking
- then do when (verb >= 3) $
- hPutStrLn stderr "link(batch): linking omitted (-no-link flag given)."
+ if isNoLink (ghcLink dflags)
+ then do debugTraceMsg dflags 3 (text "link(batch): linking omitted (-c flag given).")
return Succeeded
else do
- when (verb >= 1) $
- hPutStrLn stderr "Linking ..."
-
let getOfiles (LM _ _ us) = map nameOfObject (filter isObject us)
obj_files = concatMap getOfiles linkables
+ exe_file = exeFileName dflags
+
+ -- if the modification time on the executable is later than the
+ -- modification times on all of the objects, then omit linking
+ -- (unless the -no-recomp flag was given).
+ e_exe_time <- IO.try $ getModificationTime exe_file
+ let linking_needed
+ | Left _ <- e_exe_time = True
+ | Right t <- e_exe_time =
+ any (t <) (map linkableTime linkables)
+
+ if dopt Opt_RecompChecking dflags && not linking_needed
+ then do debugTraceMsg dflags 1 (text exe_file <+> ptext SLIT("is up to date, linking not required."))
+ return Succeeded
+ else do
+
+ debugTraceMsg dflags 1 (ptext SLIT("Linking") <+> text exe_file
+ <+> text "...")
+
-- Don't showPass in Batch mode; doLink will do that for us.
- staticLink obj_files pkg_deps
+ let link = case ghcLink dflags of
+ MkDLL -> doMkDLL
+ StaticLink -> staticLink
+ link dflags obj_files pkg_deps
- when (verb >= 3) (hPutStrLn stderr "link: done")
+ debugTraceMsg dflags 3 (text "link: done")
-- staticLink only returns if it succeeds
return Succeeded
| otherwise
- = do when (verb >= 3) $ do
- hPutStrLn stderr "link(batch): upsweep (partially) failed OR"
- hPutStrLn stderr " Main.main not exported; not linking."
+ = do debugTraceMsg dflags 3 (text "link(batch): upsweep (partially) failed OR" $$
+ text " Main.main not exported; not linking.")
return Succeeded
- where
- verb = verbosity dflags
+-- -----------------------------------------------------------------------------
+-- Compile files in one-shot mode.
+oneShot :: DynFlags -> Phase -> [(String, Maybe Phase)] -> IO ()
+oneShot dflags stop_phase srcs = do
+ o_files <- mapM (compileFile dflags stop_phase) srcs
+ doLink dflags stop_phase o_files
--- --------------------------------------------------------------------------
--- genPipeline: Pipeline construction
+compileFile :: DynFlags -> Phase -> (FilePath, Maybe Phase) -> IO FilePath
+compileFile dflags stop_phase (src, mb_phase) = do
+ exists <- doesFileExist src
+ when (not exists) $
+ throwDyn (CmdLineError ("does not exist: " ++ src))
+
+ let
+ 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.
+ 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) output Nothing{-no ModLocation-}
+ 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
+
+ | otherwise
+ = case ghcLink dflags of
+ NoLink -> return ()
+ StaticLink -> 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
+ | ExtPackage h98_id <- haskell98PackageId (pkgState dflags) = [h98_id]
+ | otherwise = []
--- Herein is all the magic about which phases to run in which order, whether
--- the intermediate files should be in TMPDIR or in the current directory,
--- what the suffix of the intermediate files should be, etc.
--- The following compilation pipeline algorithm is fairly hacky. A
--- better way to do this would be to express the whole compilation as a
--- data flow DAG, where the nodes are the intermediate files and the
--- edges are the compilation phases. This framework would also work
--- nicely if a haskell dependency generator was included in the
--- driver.
+-- ---------------------------------------------------------------------------
+-- Run a compilation pipeline, consisting of multiple phases.
--- It would also deal much more cleanly with compilation phases that
--- generate multiple intermediates, (eg. hsc generates .hc, .hi, and
--- possibly stub files), where some of the output files need to be
--- processed further (eg. the stub files need to be compiled by the C
--- compiler).
+-- 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.
--- A cool thing to do would then be to execute the data flow graph
--- concurrently, automatically taking advantage of extra processors on
--- the host machine. For example, when compiling two Haskell files
--- where one depends on the other, the data flow graph would determine
--- that the C compiler from the first compilation can be overlapped
--- with the hsc compilation for the second file.
+-- The DynFlags can be modified by phases in the pipeline (eg. by
+-- GHC_OPTIONS pragmas), and the changes affect later phases in the
+-- pipeline.
-data IntermediateFileType
+data PipelineOutput
= Temporary
+ -- output should be to a temporary file: we're going to
+ -- run more compilation steps on this output later
| Persistent
- deriving (Eq, Show)
-
-genPipeline
- :: GhcMode -- when to stop
- -> String -- "stop after" flag (for error messages)
- -> Bool -- True => output is persistent
- -> HscLang -- preferred output language for hsc
- -> (FilePath, String) -- original filename & its suffix
- -> IO [ -- list of phases to run for this file
- (Phase,
- IntermediateFileType, -- keep the output from this phase?
- String) -- output file suffix
- ]
-
-genPipeline todo stop_flag persistent_output lang (filename,suffix)
- = do
- split <- readIORef v_Split_object_files
- mangle <- readIORef v_Do_asm_mangling
- keep_hc <- readIORef v_Keep_hc_files
-#ifdef ILX
- keep_il <- readIORef v_Keep_il_files
- keep_ilx <- readIORef v_Keep_ilx_files
-#endif
- keep_raw_s <- readIORef v_Keep_raw_s_files
- keep_s <- readIORef v_Keep_s_files
- osuf <- readIORef v_Object_suf
- hcsuf <- readIORef v_HC_suf
-
- let
- ----------- ----- ---- --- -- -- - - -
- start = startPhase suffix
-
- -- special case for mkdependHS: .hspp files go through MkDependHS
- start_phase | todo == DoMkDependHS && start == Hsc = MkDependHS
- | otherwise = start
-
- haskellish = haskellish_suffix suffix
- cish = cish_suffix suffix
-
- -- for a .hc file we need to force lang to HscC
- real_lang | start_phase == HCc || start_phase == Mangle = HscC
- | otherwise = lang
-
- let
- ----------- ----- ---- --- -- -- - - -
- pipeline = preprocess ++ compile
-
- preprocess
- | haskellish = [ Unlit, Cpp, HsPp ]
- | otherwise = [ ]
-
- compile
- | todo == DoMkDependHS = [ MkDependHS ]
-
- | cish = [ Cc, As ]
-
- | haskellish =
- case real_lang of
- HscC | split && mangle -> [ Hsc, HCc, Mangle, SplitMangle, SplitAs ]
- | mangle -> [ Hsc, HCc, Mangle, As ]
- | split -> not_valid
- | otherwise -> [ Hsc, HCc, As ]
-
- HscAsm | split -> [ Hsc, SplitMangle, SplitAs ]
- | otherwise -> [ Hsc, As ]
-
- HscJava | split -> not_valid
- | otherwise -> error "not implemented: compiling via Java"
-#ifdef ILX
- HscILX | split -> not_valid
- | otherwise -> [ Hsc, Ilx2Il, Ilasm ]
-#endif
- HscNothing -> [ Hsc, HCc ] -- HCc is a dummy stop phase
-
- | otherwise = [ ] -- just pass this file through to the linker
-
- -- ToDo: this is somewhat cryptic
- not_valid = throwDyn (UsageError ("invalid option combination"))
-
- stop_phase = case todo of
- StopBefore As | split -> SplitAs
-#ifdef ILX
- | real_lang == HscILX -> Ilasm
-#endif
- StopBefore phase -> phase
- DoMkDependHS -> Ln
- DoLink -> Ln
- DoMkDLL -> Ln
- ----------- ----- ---- --- -- -- - - -
-
- -- this shouldn't happen.
- when (start_phase /= Ln && start_phase `notElem` pipeline)
- (throwDyn (CmdLineError ("can't find starting phase for "
- ++ filename)))
- -- if we can't find the phase we're supposed to stop before,
- -- something has gone wrong. This test carefully avoids the
- -- case where we aren't supposed to do any compilation, because the file
- -- is already in linkable form (for example).
--- hPutStrLn stderr (show ((start_phase `elem` pipeline,stop_phase /= Ln,stop_phase `notElem` pipeline), start_phase, stop_phase, pipeline,todo))
--- hFlush stderr
- when (start_phase `elem` pipeline &&
- (stop_phase /= Ln && stop_phase `notElem` pipeline))
- (do
- throwDyn (UsageError
- ("flag `" ++ stop_flag
- ++ "' is incompatible with source file `"
- ++ filename ++ "'" ++ show pipeline ++ show stop_phase)))
- let
- -- .o and .hc suffixes can be overriden by command-line options:
- myPhaseInputExt HCc | Just s <- hcsuf = s
- myPhaseInputExt Ln = osuf
- myPhaseInputExt other = phaseInputExt other
-
- annotatePipeline
- :: [Phase] -- raw pipeline
- -> Phase -- phase to stop before
- -> [(Phase, IntermediateFileType, String{-file extension-})]
- annotatePipeline [] _ = []
- annotatePipeline (Ln:_) _ = []
- annotatePipeline (phase:next_phase:ps) stop =
- (phase, keep_this_output, myPhaseInputExt next_phase)
- : annotatePipeline (next_phase:ps) stop
- where
- keep_this_output
- | next_phase == stop
- = if persistent_output then Persistent else Temporary
- | otherwise
- = case next_phase of
- Ln -> Persistent
- Mangle | keep_raw_s -> Persistent
- As | keep_s -> Persistent
- HCc | keep_hc -> Persistent
-#ifdef ILX
- Ilx2Il | keep_ilx -> Persistent
- Ilasm | keep_il -> Persistent
-#endif
- _other -> Temporary
-
- -- add information about output files to the pipeline
- -- the suffix on an output file is determined by the next phase
- -- in the pipeline, so we add linking to the end of the pipeline
- -- to force the output from the final phase to be a .o file.
-
- annotated_pipeline = annotatePipeline (pipeline ++ [Ln]) stop_phase
-
- phase_ne p (p1,_,_) = (p1 /= p)
- ----------- ----- ---- --- -- -- - - -
-
- return (
- takeWhile (phase_ne stop_phase ) $
- dropWhile (phase_ne start_phase) $
- annotated_pipeline
- )
-
+ -- 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, IntermediateFileType, String) ] -- phases to run
- -> (String,String) -- input file
- -> Bool -- doing linking afterward?
- -> Bool -- take into account -o when generating output?
- -> IO (String, String) -- return final filename
-
-runPipeline pipeline (input_fn,suffix) do_linking use_ofile
- = pipeLoop pipeline (input_fn,suffix) do_linking use_ofile basename suffix
- where (basename, _) = splitFilename input_fn
-
-pipeLoop [] input_fn _ _ _ _ = return input_fn
-pipeLoop (all_phases@((phase, keep, o_suffix):phases))
- (input_fn,real_suff) do_linking use_ofile orig_basename orig_suffix
+ :: Phase -- When to stop
+ -> DynFlags -- Dynamic flags
+ -> (FilePath,Maybe Phase) -- Input filename (and maybe -x suffix)
+ -> PipelineOutput -- Output filename
+ -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
+ -> IO (DynFlags, FilePath) -- (final flags, output filename)
+
+runPipeline stop_phase dflags (input_fn, mb_phase) output maybe_loc
= do
+ let (basename, suffix) = splitFilename input_fn
+
+ -- If we were given a -x flag, then use that phase to start from
+ start_phase
+ | Just x_phase <- mb_phase = x_phase
+ | otherwise = startPhase suffix
+
+ -- We want to catch cases of "you can't get there from here" before
+ -- we start the pipeline, because otherwise it will just run off the
+ -- end.
+ --
+ -- There is a partial ordering on phases, where A < B iff A occurs
+ -- 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))
+
+ -- 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 dflags 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
+
+ -- 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
+ -- stage, but we wanted to keep the output, then we have to explicitly
+ -- copy the file.
+ case output of
+ Temporary ->
+ return (dflags', output_fn)
+ _other ->
+ do final_fn <- get_output_fn stop_phase maybe_loc
+ when (final_fn /= output_fn) $
+ copy dflags ("Copying `" ++ output_fn ++ "' to `" ++ final_fn
+ ++ "'") output_fn final_fn
+ return (dflags', final_fn)
+
+
+
+pipeLoop :: DynFlags -> Phase -> Phase
+ -> FilePath -> String -> Suffix
+ -> (Phase -> Maybe ModLocation -> IO FilePath)
+ -> Maybe ModLocation
+ -> IO (DynFlags, FilePath, Maybe ModLocation)
+
+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)
+
+ | 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 { (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 }
+
+getOutputFilename
+ :: DynFlags -> Phase -> PipelineOutput -> String
+ -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
+getOutputFilename dflags stop_phase output basename
+ = func
+ 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
+
+ func 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
+ 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
+
+
+-- -----------------------------------------------------------------------------
+-- 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
+-- what the rest of the phases will be until part-way through the
+-- 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 -- 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.
+ -> (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
- output_fn <- outputFileName (null phases) keep o_suffix
-
- mbCarryOn <- run_phase phase orig_basename orig_suffix
- input_fn output_fn
- -- sometimes we bail out early, eg. when the compiler's recompilation
- -- checker has determined that recompilation isn't necessary.
- case mbCarryOn of
- Nothing -> do
- let (_,keep,final_suffix) = last all_phases
- ofile <- outputFileName True keep final_suffix
- return (ofile, final_suffix)
- -- carry on ...
- Just fn -> do
- {-
- Check to see whether we've reached the end of the
- pipeline, but did so with an ineffective last stage.
- (i.e., it returned the input_fn as the output filename).
-
- If we did and the output is persistent, copy the contents
- of input_fn into the file where the pipeline's output is
- expected to end up.
- -}
- atEnd <- finalStage (null phases)
- when (atEnd && fn == input_fn)
- (copy "Saving away compilation pipeline's output"
- input_fn
- output_fn)
- {-
- Notice that in order to keep the invariant that we can
- determine a compilation pipeline's 'start phase' just
- by looking at the input filename, the input filename
- to the next stage/phase is associated here with the suffix
- of the output file, *even* if it does not have that
- suffix in reality.
-
- Why is this important? Because we may run a compilation
- pipeline in stages (cf. Main.main.compileFile's two stages),
- so when generating the next stage we need to be precise
- about what kind of file (=> suffix) is given as input.
-
- [Not having to generate a pipeline in stages seems like
- the right way to go, but I've punted on this for now --sof]
-
- -}
- pipeLoop phases (fn, o_suffix) do_linking use_ofile
- orig_basename orig_suffix
- where
- finalStage lastPhase = do
- o_file <- readIORef v_Output_file
- return (lastPhase && not do_linking && use_ofile && isJust o_file)
-
- outputFileName last_phase keep suffix
- = do o_file <- readIORef v_Output_file
- atEnd <- finalStage last_phase
- if atEnd
- then case o_file of
- Just s -> return s
- Nothing -> error "outputFileName"
- else if keep == Persistent
- then odir_ify (orig_basename ++ '.':suffix)
- else newTempName suffix
-
-run_phase :: Phase
- -> String -- basename of original input source
- -> String -- its extension
- -> FilePath -- name of file which contains the input to this phase.
- -> FilePath -- where to stick the result.
- -> IO (Maybe FilePath)
- -- Nothing => stop the compilation pipeline
- -- Just fn => the result of this phase can be found in 'fn'
- -- (this can either be 'input_fn' or 'output_fn').
-------------------------------------------------------------------------------
-- Unlit phase
-run_phase Unlit _basename _suff input_fn output_fn
- = do unlit_flags <- getOpts opt_L
+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
- SysTools.runUnlit (map SysTools.Option unlit_flags ++
+ output_fn <- get_output_fn (Cpp sf) maybe_loc
+
+ SysTools.runUnlit dflags
+ (map SysTools.Option unlit_flags ++
[ SysTools.Option "-h"
, SysTools.Option input_fn
, SysTools.FileOption "" input_fn
, SysTools.FileOption "" output_fn
])
- return (Just output_fn)
+
+ return (Cpp sf, dflags, maybe_loc, output_fn)
-------------------------------------------------------------------------------
--- Cpp phase
+-- Cpp phase : (a) gets OPTIONS out of file
+-- (b) runs cpp if necessary
-run_phase Cpp basename suff input_fn output_fn
- = do src_opts <- getOptionsFromSource input_fn
- unhandled_flags <- processArgs dynamic_flags src_opts []
- checkProcessArgsResult unhandled_flags basename suff
+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)
- do_cpp <- dynFlag cppFlag
- if not do_cpp then
+ 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 (Just input_fn)
+ return (HsPp sf, dflags, maybe_loc, input_fn)
else do
- hscpp_opts <- getOpts opt_P
- hs_src_cpp_opts <- readIORef v_Hs_source_cpp_opts
-
- cmdline_include_paths <- readIORef v_Include_paths
-
- pkg_include_dirs <- getPackageIncludePath []
- let include_paths = foldr (\ x xs -> "-I" : x : xs) []
- (cmdline_include_paths ++ pkg_include_dirs)
-
- verb <- getVerbFlag
- (md_c_flags, _) <- machdepCCOpts
-
- SysTools.runCpp ([SysTools.Option verb]
- ++ map SysTools.Option include_paths
- ++ map SysTools.Option hs_src_cpp_opts
- ++ map SysTools.Option hscpp_opts
- ++ map SysTools.Option md_c_flags
- ++ [ 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
- ])
- return (Just output_fn)
+ output_fn <- get_output_fn (HsPp sf) maybe_loc
+ doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
+ return (HsPp sf, dflags, maybe_loc, output_fn)
-------------------------------------------------------------------------------
-- HsPp phase
-run_phase HsPp basename suff input_fn output_fn
- = do let orig_fn = basename ++ '.':suff
- do_pp <- dynFlag ppFlag
- if not do_pp then
+runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
+ = 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 (Just input_fn)
+ return (Hsc sf, dflags, maybe_loc, input_fn)
else do
- hspp_opts <- getOpts opt_F
- hs_src_pp_opts <- readIORef v_Hs_source_pp_opts
- SysTools.runPp ( [ SysTools.Option orig_fn
+ let hspp_opts = getOpts dflags opt_F
+ let orig_fn = basename `joinFileExt` suff
+ output_fn <- get_output_fn (Hsc sf) maybe_loc
+ SysTools.runPp dflags
+ ( [ SysTools.Option orig_fn
, SysTools.Option input_fn
, SysTools.FileOption "" output_fn
] ++
- map SysTools.Option hs_src_pp_opts ++
map SysTools.Option hspp_opts
)
- return (Just output_fn)
-
------------------------------------------------------------------------------
--- MkDependHS phase
-
-run_phase MkDependHS basename suff input_fn output_fn
- = do src <- readFile input_fn
- let (import_sources, import_normals, _) = getImports src
- let orig_fn = basename ++ '.':suff
- deps_sources <- mapM (findDependency True orig_fn) import_sources
- deps_normals <- mapM (findDependency False orig_fn) import_normals
- let deps = deps_sources ++ deps_normals
-
- osuf <- readIORef v_Object_suf
-
- extra_suffixes <- readIORef v_Dep_suffixes
- let suffixes = osuf : map (++ ('_':osuf)) extra_suffixes
- ofiles = map (\suf -> basename ++ '.':suf) suffixes
-
- objs <- mapM odir_ify ofiles
-
- -- Handle for file that accumulates dependencies
- hdl <- readIORef v_Dep_tmp_hdl
-
- -- std dependency of the object(s) on the source file
- hPutStrLn hdl (unwords (map escapeSpaces objs) ++ " : " ++
- escapeSpaces (basename ++ '.':suff))
-
- let genDep (dep, False {- not an hi file -}) =
- hPutStrLn hdl (unwords (map escapeSpaces objs) ++ " : " ++
- escapeSpaces dep)
- genDep (dep, True {- is an hi file -}) = do
- hisuf <- readIORef v_Hi_suf
- let dep_base = remove_suffix '.' dep
- deps = (dep_base ++ hisuf)
- : map (\suf -> dep_base ++ suf ++ '_':hisuf) extra_suffixes
- -- length objs should be == length deps
- sequence_ (zipWith (\o d -> hPutStrLn hdl (escapeSpaces o ++ " : " ++ escapeSpaces d)) objs deps)
-
- sequence_ (map genDep [ d | Just d <- deps ])
- return (Just output_fn)
-
--- add the lines to dep_makefile:
- -- always:
- -- this.o : this.hs
-
- -- if the dependency is on something other than a .hi file:
- -- this.o this.p_o ... : dep
- -- otherwise
- -- if the import is {-# SOURCE #-}
- -- this.o this.p_o ... : dep.hi-boot[-$vers]
-
- -- else
- -- this.o ... : dep.hi
- -- this.p_o ... : dep.p_hi
- -- ...
-
- -- (where .o is $osuf, and the other suffixes come from
- -- the cmdline -s options).
-
+ return (Hsc sf, dflags, maybe_loc, output_fn)
-----------------------------------------------------------------------------
-- Hsc phase
-- Compilation of a single module, in "legacy" mode (_not_ under
-- the direction of the compilation manager).
-run_phase Hsc basename suff input_fn output_fn
- = do
-
+runPhase (Hsc src_flavour) stop dflags0 basename suff input_fn get_output_fn _maybe_loc
+ = do -- normal Hsc mode, not mkdependHS
+
-- we add the current directory (i.e. the directory in which
-- the .hs files resides) to the import path, since this is
-- what gcc does, and it's probably what you want.
let current_dir = directoryOf basename
- paths <- readIORef v_Include_paths
- writeIORef v_Include_paths (current_dir : paths)
+ paths = includePaths dflags0
+ dflags = dflags0 { includePaths = current_dir : paths }
-- gather the imports and module name
- (srcimps,imps,mod_name) <-
- if extcoreish_suffix suff
- then do
- -- no explicit imports in ExtCore input.
- m <- getCoreModuleName input_fn
- return ([], [], mkModuleName m)
- else
- getImportsFromFile input_fn
-
- -- build a ModLocation to pass to hscMain.
- let (path,file) = splitFilenameDir basename
- (mod, location') <- mkHomeModLocation mod_name True path file suff
-
- -- take -ohi into account if present
- ohi <- readIORef v_Output_hi
- let location | Just fn <- ohi = location'{ ml_hi_file = fn }
- | otherwise = location'
-
- -- figure out if the source has changed, for recompilation avoidance.
- -- only do this if we're eventually going to generate a .o file.
- -- (ToDo: do when generating .hc files too?)
+ (hspp_buf,mod_name) <-
+ case src_flavour of
+ ExtCoreFile -> do { -- no explicit imports in ExtCore input.
+ ; m <- getCoreModuleName input_fn
+ ; return (Nothing, mkModule m) }
+
+ other -> do { buf <- hGetStringBuffer input_fn
+ ; (_,_,L _ mod_name) <- getImports dflags buf input_fn
+ ; return (Just buf, mod_name) }
+
+ -- 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
+ -- the .hi and .o filenames, and this is as good a way
+ -- as any to generate them, and better than most. (e.g. takes
+ -- into accout the -osuf flags)
+ location1 <- mkHomeModLocation2 dflags mod_name basename suff
+
+ -- Boot-ify it if necessary
+ 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
+
+ -- 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
+
+ -- Make the ModSummary to hand to hscMain
+ src_timestamp <- getModificationTime (basename `joinFileExt` suff)
+ let
+ unused_field = panic "runPhase:ModSummary field"
+ -- Some fields are not looked at by hscMain
+ mod_summary = ModSummary { ms_mod = mod_name,
+ 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 }
+
+ o_file = ml_obj_file location4 -- The real object file
+
+
+ -- Figure out if the source has changed, for recompilation avoidance.
--
-- Setting source_unchanged to True means that M.o seems
-- to be up to date wrt M.hs; so no need to recompile unless imports have
-- 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.
- do_recomp <- readIORef v_Recomp
- todo <- readIORef v_GhcMode
- expl_o_file <- readIORef v_Output_file
-
- let o_file -- if the -o option is given and IT IS THE OBJECT FILE FOR
- -- THIS COMPILATION, then use that to determine if the
- -- source is unchanged.
- | Just x <- expl_o_file, todo == StopBefore Ln = x
- | otherwise = ml_obj_file location
-
+ let do_recomp = dopt Opt_RecompChecking dflags
source_unchanged <-
- if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln ))
- then return False
- else do t1 <- getModificationTime (basename ++ '.':suff)
- o_file_exists <- doesFileExist o_file
+ if not do_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 > t1
+ if t2 > src_timestamp
then return True
else return False
-- get the DynFlags
- dyn_flags <- getDynFlags
+ let hsc_lang = hscMaybeAdjustTarget dflags stop src_flavour (hscTarget dflags)
+ let next_phase = hscNextPhase dflags src_flavour hsc_lang
+ output_fn <- get_output_fn next_phase (Just location4)
+
+ let dflags' = dflags { hscTarget = hsc_lang,
+ hscOutName = output_fn,
+ extCoreName = basename ++ ".hcr" }
- let dyn_flags' = dyn_flags { hscOutName = output_fn,
- hscStubCOutName = basename ++ "_stub.c",
- hscStubHOutName = basename ++ "_stub.h",
- extCoreName = basename ++ ".hcr" }
- hsc_env = HscEnv { hsc_mode = OneShot,
- hsc_dflags = dyn_flags',
- hsc_HPT = emptyHomePackageTable }
-
+ hsc_env <- newHscEnv dflags'
+
+ -- Tell the finder cache about this module
+ addHomeModuleToFinder hsc_env mod_name location4
-- run the compiler!
- pcs <- initPersistentCompilerState
- result <- hscMain hsc_env pcs mod
- location{ ml_hspp_file=Just input_fn }
- source_unchanged
- False
- Nothing -- no iface
+ mbResult <- 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
+ -- The .o file must have a later modification date
+ -- than the source file (else we wouldn't be in HscNoRecomp)
+ -- but we touch it anyway, to keep 'make' happy (we think).
+ return (StopLn, dflags', Just location4, o_file)
+ Just (HscRecomp hasStub)
+ -> do when hasStub $
+ do stub_o <- compileStub dflags' mod_name location4
+ consIORef v_Ld_inputs stub_o
+ -- In the case of hs-boot files, generate a dummy .o-boot
+ -- stamp file for the benefit of Make
+ when (isHsBoot src_flavour) $
+ SysTools.touch dflags' "Touching object file" o_file
+ return (next_phase, dflags', Just location4, output_fn)
- case result of {
+-----------------------------------------------------------------------------
+-- Cmm phase
- HscFail pcs -> throwDyn (PhaseFailed "hsc" (ExitFailure 1));
+runPhase CmmCpp stop dflags basename suff input_fn get_output_fn maybe_loc
+ = do
+ output_fn <- get_output_fn Cmm maybe_loc
+ doCpp dflags False{-not raw-} True{-include CC opts-} input_fn output_fn
+ return (Cmm, dflags, maybe_loc, output_fn)
+
+runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc
+ = do
+ let hsc_lang = hscMaybeAdjustTarget dflags stop HsSrcFile (hscTarget dflags)
+ let next_phase = hscNextPhase dflags HsSrcFile hsc_lang
+ output_fn <- get_output_fn next_phase maybe_loc
- HscNoRecomp pcs details iface -> do { SysTools.touch "Touching object file" o_file
- ; return Nothing } ;
+ let dflags' = dflags { hscTarget = hsc_lang,
+ hscOutName = output_fn,
+ extCoreName = basename ++ ".hcr" }
- HscRecomp pcs details iface stub_h_exists stub_c_exists
- _maybe_interpreted_code -> do
+ ok <- hscCmmFile dflags' input_fn
- -- deal with stubs
- maybe_stub_o <- compileStub dyn_flags' stub_c_exists
- case maybe_stub_o of
- Nothing -> return ()
- Just stub_o -> add v_Ld_inputs stub_o
- case hscLang dyn_flags of
- HscNothing -> return Nothing
- _ -> return (Just output_fn)
- }
+ when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1))
+
+ return (next_phase, dflags, maybe_loc, 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.
-run_phase cc_phase basename suff input_fn output_fn
- | cc_phase == Cc || cc_phase == HCc
- = do cc_opts <- getOpts opt_c
- cmdline_include_paths <- readIORef v_Include_paths
+runPhase cc_phase stop dflags basename suff input_fn get_output_fn maybe_loc
+ | cc_phase `eqPhase` Cc || cc_phase `eqPhase` HCc
+ = do let cc_opts = getOpts dflags opt_c
+ hcc = cc_phase `eqPhase` HCc
- let hcc = cc_phase == HCc
+ let cmdline_include_paths = includePaths dflags
-- HC files have the dependent packages stamped into them
pkgs <- if hcc then 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 pkgs
+ pkg_include_dirs <- getPackageIncludePath dflags pkgs
let include_paths = foldr (\ x xs -> "-I" : x : xs) []
(cmdline_include_paths ++ pkg_include_dirs)
- mangle <- readIORef v_Do_asm_mangling
- (md_c_flags, md_regd_c_flags) <- machdepCCOpts
-
- verb <- getVerbFlag
+ let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
+ let pic_c_flags = picCCOpts dflags
- o2 <- readIORef v_minus_o2_for_C
- let opt_flag | o2 = "-O2"
- | otherwise = "-O"
+ let verb = getVerbFlag dflags
- pkg_extra_cc_opts <- getPackageExtraCcOpts pkgs
+ pkg_extra_cc_opts <- getPackageExtraCcOpts dflags pkgs
- split_objs <- readIORef v_Split_object_files
- let split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
+ let split_objs = dopt Opt_SplitObjs dflags
+ split_opt | hcc && split_objs = [ "-DUSE_SPLIT_MARKERS" ]
| otherwise = [ ]
- excessPrecision <- readIORef v_Excess_precision
+ let excessPrecision = dopt Opt_ExcessPrecision dflags
+
+ let cc_opt | optLevel dflags >= 2 = "-O2"
+ | otherwise = "-O"
+
+ -- Decide next phase
+
+ let mangle = dopt Opt_DoAsmMangling dflags
+ next_phase
+ | hcc && mangle = Mangle
+ | otherwise = As
+ output_fn <- get_output_fn next_phase maybe_loc
+
+ let
+ more_hcc_opts =
+#if i386_TARGET_ARCH
+ -- on x86 the floating point regs have greater precision
+ -- than a double, which leads to unpredictable results.
+ -- By default, we turn this off with -ffloat-store unless
+ -- the user specified -fexcess-precision.
+ (if excessPrecision then [] else [ "-ffloat-store" ]) ++
+#endif
+ -- gcc's -fstrict-aliasing allows two accesses to memory
+ -- to be considered non-aliasing if they have different types.
+ -- This interacts badly with the C code we generate, which is
+ -- very weakly typed, being derived from C--.
+ ["-fno-strict-aliasing"]
- -- force the C compiler to interpret this file as C when
- -- compiling .hc files, by adding the -x c option.
- let langopt
- | cc_phase == HCc = [ SysTools.Option "-x", SysTools.Option "c"]
- | otherwise = [ ]
- SysTools.runCc (langopt ++
+
+ SysTools.runCc dflags (
+ -- force the C compiler to interpret this file as C when
+ -- compiling .hc files, by adding the -x c option.
+ -- Also useful for plain .c files, just in case GHC saw a
+ -- -x c option.
+ [ SysTools.Option "-x", SysTools.Option "c"] ++
[ SysTools.FileOption "" input_fn
, SysTools.Option "-o"
, SysTools.FileOption "" output_fn
]
++ map SysTools.Option (
md_c_flags
- ++ (if cc_phase == HCc && mangle
+ ++ pic_c_flags
+ ++ (if hcc && mangle
then md_regd_c_flags
else [])
- ++ [ verb, "-S", "-Wimplicit", opt_flag ]
+ ++ (if hcc
+ then more_hcc_opts
+ else [])
+ ++ [ verb, "-S", "-Wimplicit", cc_opt ]
++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
++ cc_opts
++ split_opt
- ++ (if excessPrecision then [] else [ "-ffloat-store" ])
++ include_paths
++ pkg_extra_cc_opts
))
- return (Just output_fn)
+
+ return (next_phase, dflags, maybe_loc, output_fn)
-- ToDo: postprocess the output from gcc
-----------------------------------------------------------------------------
-- Mangle phase
-run_phase Mangle _basename _suff input_fn output_fn
- = do mangler_opts <- getOpts opt_m
- machdep_opts <- if (prefixMatch "i386" cTARGETPLATFORM)
- then do n_regs <- dynFlag stolen_x86_regs
- return [ show n_regs ]
- else return []
+runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
+ = do let mangler_opts = getOpts dflags opt_m
+
+#if i386_TARGET_ARCH
+ machdep_opts <- return [ show (stolen_x86_regs dflags) ]
+#else
+ machdep_opts <- return []
+#endif
+
+ let split = dopt Opt_SplitObjs dflags
+ next_phase
+ | split = SplitMangle
+ | otherwise = As
+ output_fn <- get_output_fn next_phase maybe_loc
- SysTools.runMangle (map SysTools.Option mangler_opts
+ SysTools.runMangle dflags (map SysTools.Option mangler_opts
++ [ SysTools.FileOption "" input_fn
, SysTools.FileOption "" output_fn
]
++ map SysTools.Option machdep_opts)
- return (Just output_fn)
+
+ return (next_phase, dflags, maybe_loc, output_fn)
-----------------------------------------------------------------------------
-- Splitting phase
-run_phase SplitMangle _basename _suff input_fn output_fn
+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 "split"
+ split_s_prefix <- SysTools.newTempName dflags "split"
let n_files_fn = split_s_prefix
- SysTools.runSplit [ SysTools.FileOption "" input_fn
+ SysTools.runSplit dflags
+ [ SysTools.FileOption "" input_fn
, SysTools.FileOption "" split_s_prefix
, SysTools.FileOption "" n_files_fn
]
addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
| n <- [1..n_files]]
- return (Just output_fn)
+ return (SplitAs, dflags, maybe_loc, "**splitmangle**")
+ -- we don't use the filename
-----------------------------------------------------------------------------
-- As phase
-run_phase As _basename _suff input_fn output_fn
- = do as_opts <- getOpts opt_a
- cmdline_include_paths <- readIORef v_Include_paths
+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
+
+ output_fn <- get_output_fn StopLn maybe_loc
+
+ -- we create directories for the object file, because it
+ -- might be a hierarchical module.
+ createDirectoryHierarchy (directoryOf output_fn)
- SysTools.runAs (map SysTools.Option as_opts
+ SysTools.runAs dflags
+ (map SysTools.Option as_opts
++ [ SysTools.Option ("-I" ++ p) | p <- cmdline_include_paths ]
++ [ SysTools.Option "-c"
, SysTools.FileOption "" input_fn
, SysTools.Option "-o"
, SysTools.FileOption "" output_fn
])
- return (Just output_fn)
-run_phase SplitAs basename _suff _input_fn output_fn
- = do as_opts <- getOpts opt_a
+ 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 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
- odir <- readIORef v_Output_dir
- let real_odir = case odir of
- Nothing -> basename ++ "_split"
- Just d -> d
+ let split_s n = split_s_prefix ++ "__" ++ show n `joinFileExt` "s"
+ split_obj n = split_odir `joinFileName`
+ filenameOf base_o ++ "__" ++ show n
+ `joinFileExt` osuf
let assemble_file n
- = do let input_s = split_s_prefix ++ "__" ++ show n ++ ".s"
- let output_o = replaceFilenameDirectory
- (basename ++ "__" ++ show n ++ ".o")
- real_odir
- real_o <- osuf_ify output_o
- SysTools.runAs (map SysTools.Option as_opts ++
- [ SysTools.Option "-c"
- , SysTools.Option "-o"
- , SysTools.FileOption "" real_o
- , SysTools.FileOption "" input_s
- ])
+ = SysTools.runAs dflags
+ (map SysTools.Option as_opts ++
+ [ SysTools.Option "-c"
+ , SysTools.Option "-o"
+ , SysTools.FileOption "" (split_obj n)
+ , SysTools.FileOption "" (split_s n)
+ ])
mapM_ assemble_file [1..n]
- return (Just output_fn)
-
-#ifdef ILX
------------------------------------------------------------------------------
--- Ilx2Il phase
--- Run ilx2il over the ILX output, getting an IL file
-
-run_phase Ilx2Il _basename _suff input_fn output_fn
- = do ilx2il_opts <- getOpts opt_I
- SysTools.runIlx2il (map SysTools.Option ilx2il_opts
- ++ [ SysTools.Option "--no-add-suffix-to-assembly",
- SysTools.Option "mscorlib",
- SysTools.Option "-o",
- SysTools.FileOption "" output_fn,
- SysTools.FileOption "" input_fn ])
- return (Just output_fn)
-
------------------------------------------------------------------------------
--- Ilasm phase
--- Run ilasm over the IL, getting a DLL
-run_phase Ilasm _basename _suff input_fn output_fn
- = do ilasm_opts <- getOpts opt_i
- SysTools.runIlasm (map SysTools.Option ilasm_opts
- ++ [ SysTools.Option "/QUIET",
- SysTools.Option "/DLL",
- SysTools.FileOption "/OUT=" output_fn,
- SysTools.FileOption "" input_fn ])
- return (Just output_fn)
+ -- 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)
-#endif -- ILX
-----------------------------------------------------------------------------
-- MoveBinary sort-of-phase
-- we don't need the generality of a phase (MoveBinary is always
-- done after linking and makes only sense in a parallel setup) -- HWL
-run_phase_MoveBinary input_fn
+runPhase_MoveBinary input_fn
= do
sysMan <- getSysMan
pvm_root <- getEnv "PVM_ROOT"
-----------------------------------------------------------------------------
-- Complain about non-dynamic flags in OPTIONS pragmas
-checkProcessArgsResult flags basename suff
+checkProcessArgsResult flags filename
= do when (notNull flags) (throwDyn (ProgramError (
- showSDoc (hang (text basename <> text ('.':suff) <> char ':')
+ 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 [PackageName]
+getHCFilePackages :: FilePath -> IO [PackageId]
getHCFilePackages filename =
EXCEPTION.bracket (openFile filename ReadMode) hClose $ \h -> do
l <- hGetLine h
case l of
'/':'*':' ':'G':'H':'C':'_':'P':'A':'C':'K':'A':'G':'E':'S':rest ->
- return (map mkPackageName (words rest))
+ return (map stringToPackageId (words rest))
_other ->
return []
-- read any interface files), so the user must explicitly specify all
-- the packages.
-staticLink :: [FilePath] -> [PackageName] -> IO ()
-staticLink o_files dep_packages = do
- verb <- getVerbFlag
- static <- readIORef v_Static
- no_hs_main <- readIORef v_NoHsMain
+staticLink :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
+staticLink dflags o_files dep_packages = do
+ let verb = getVerbFlag dflags
+ output_fn = exeFileName dflags
-- get the full list of packages to link with, by combining the
-- explicit packages with the auto packages and all of their
-- dependencies, and eliminating duplicates.
- o_file <- readIORef v_Output_file
- let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; }
-
- pkg_lib_paths <- getPackageLibraryPath dep_packages
+ pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
- lib_paths <- readIORef v_Library_paths
+ let lib_paths = libraryPaths dflags
let lib_path_opts = map ("-L"++) lib_paths
- pkg_link_opts <- getPackageLinkOpts dep_packages
+ pkg_link_opts <- getPackageLinkOpts dflags dep_packages
#ifdef darwin_TARGET_OS
- pkg_framework_paths <- getPackageFrameworkPath dep_packages
+ pkg_framework_paths <- getPackageFrameworkPath dflags dep_packages
let pkg_framework_path_opts = map ("-F"++) pkg_framework_paths
- framework_paths <- readIORef v_Framework_paths
- let framework_path_opts = map ("-F"++) framework_paths
-
- pkg_frameworks <- getPackageFrameworks dep_packages
- let pkg_framework_opts = map ("-framework " ++) pkg_frameworks
+ let framework_paths = frameworkPaths dflags
+ framework_path_opts = map ("-F"++) framework_paths
- frameworks <- readIORef v_Cmdline_frameworks
- let framework_opts = map ("-framework "++) (reverse frameworks)
+ 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
#endif
extra_ld_inputs <- readIORef v_Ld_inputs
-- opts from -optl-<blah> (including -l<blah> options)
- extra_ld_opts <- getStaticOpts v_Opt_l
+ let extra_ld_opts = getOpts dflags opt_l
- [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, basePackage]
+ let ways = wayNames dflags
- let extra_os = if static || no_hs_main
- then []
- else [ head (library_dirs rts_pkg) ++ "/Main.dll_o",
- head (library_dirs std_pkg) ++ "/PrelMain.dll_o" ]
+ -- Here are some libs that need to be linked at the *end* of
+ -- 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 = [
+#if defined(HAVE_LIBBFD)
+ "-lbfd", "-liberty"
+#endif
+ ]
+ | otherwise = []
- (md_c_flags, _) <- machdepCCOpts
- SysTools.runLink ( [ SysTools.Option verb
+ let
+ thread_opts | WayThreaded `elem` ways = [
+#if !defined(mingw32_TARGET_OS) && !defined(freebsd_TARGET_OS)
+ "-lpthread"
+#endif
+#if defined(osf3_TARGET_OS)
+ , "-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_os
++ extra_ld_inputs
++ lib_path_opts
++ extra_ld_opts
++ pkg_framework_path_opts
++ pkg_framework_opts
#endif
- ++ if static && not no_hs_main then
- [ "-u", prefixUnderscore "Main_zdmain_closure"]
- else []))
+ ++ debug_opts
+ ++ thread_opts
+ ))
-- parallel only: move binary to another dir -- HWL
- ways_ <- readIORef v_Ways
- when (WayPar `elem` ways_)
- (do success <- run_phase_MoveBinary output_fn
+ when (WayPar `elem` ways)
+ (do success <- runPhase_MoveBinary output_fn
if success then return ()
else throwDyn (InstallationError ("cannot move binary to PVM dir")))
+
+exeFileName :: DynFlags -> FilePath
+exeFileName dflags
+ | Just s <- outputFile dflags =
+#if defined(mingw32_HOST_OS)
+ if null (suffixOf s)
+ then s `joinFileExt` "exe"
+ else s
+#else
+ s
+#endif
+ | otherwise =
+#if defined(mingw32_HOST_OS)
+ "main.exe"
+#else
+ "a.out"
+#endif
+
-----------------------------------------------------------------------------
-- Making a DLL (only for Win32)
-doMkDLL :: [String] -> IO ()
-doMkDLL o_files = do
- verb <- getVerbFlag
- static <- readIORef v_Static
- no_hs_main <- readIORef v_NoHsMain
-
- o_file <- readIORef v_Output_file
+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
+ let o_file = outputFile dflags
let output_fn = case o_file of { Just s -> s; Nothing -> "HSdll.dll"; }
- pkg_lib_paths <- getPackageLibraryPath []
+ pkg_lib_paths <- getPackageLibraryPath dflags dep_packages
let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths
- lib_paths <- readIORef v_Library_paths
+ let lib_paths = libraryPaths dflags
let lib_path_opts = map ("-L"++) lib_paths
- pkg_link_opts <- getPackageLinkOpts []
+ pkg_link_opts <- getPackageLinkOpts dflags dep_packages
-- probably _stub.o files
extra_ld_inputs <- readIORef v_Ld_inputs
-- opts from -optdll-<blah>
- extra_ld_opts <- getStaticOpts v_Opt_dll
+ let extra_ld_opts = getOpts dflags opt_dll
- [rts_pkg, std_pkg] <- getPackageDetails [rtsPackage, basePackage]
+ let pstate = pkgState dflags
+ rts_id | ExtPackage id <- rtsPackageId pstate = id
+ | otherwise = panic "staticLink: rts package missing"
+ base_id | ExtPackage id <- basePackageId pstate = id
+ | otherwise = panic "staticLink: base package missing"
+ rts_pkg = getPackageDetails pstate rts_id
+ base_pkg = getPackageDetails pstate base_id
let extra_os = if static || no_hs_main
then []
- else [ head (library_dirs rts_pkg) ++ "/Main.dll_o",
- head (library_dirs std_pkg) ++ "/PrelMain.dll_o" ]
+ else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o",
+ head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ]
- (md_c_flags, _) <- machdepCCOpts
- SysTools.runMkDLL
+ let (md_c_flags, _) = machdepCCOpts dflags
+ SysTools.runMkDLL dflags
([ SysTools.Option verb
, SysTools.Option "-o"
, SysTools.FileOption "" output_fn
then [ "" ]
else [ "--export-all" ])
))
+
+-- -----------------------------------------------------------------------------
+-- Running CPP
+
+doCpp :: DynFlags -> Bool -> Bool -> FilePath -> FilePath -> IO ()
+doCpp dflags raw include_cc_opts input_fn output_fn = do
+ let hscpp_opts = getOpts dflags opt_P
+ let cmdline_include_paths = includePaths dflags
+
+ pkg_include_dirs <- getPackageIncludePath dflags []
+ let include_paths = foldr (\ x xs -> "-I" : x : xs) []
+ (cmdline_include_paths ++ pkg_include_dirs)
+
+ let verb = getVerbFlag dflags
+
+ let cc_opts
+ | not include_cc_opts = []
+ | otherwise = (optc ++ md_c_flags)
+ where
+ optc = getOpts dflags opt_c
+ (md_c_flags, _) = machdepCCOpts dflags
+
+ 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
+
+-- Default CPP defines in Haskell source
+hsSourceCppOpts =
+ [ "-D__HASKELL1__="++cHaskell1Version
+ , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
+ , "-D__HASKELL98__"
+ , "-D__CONCURRENT_HASKELL__"
+ ]
+
+
+-- -----------------------------------------------------------------------------
+-- Misc.
+
+hscNextPhase :: DynFlags -> HscSource -> HscTarget -> Phase
+hscNextPhase dflags HsBootFile hsc_lang = StopLn
+hscNextPhase dflags other 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
projects / ghc-hetmet.git / blobdiff