module DriverPipeline (
-- Interfaces for the batch-mode driver
- runPipeline, staticLink,
+ compileFile, staticLink,
-- Interfaces for the compilation manager (interpreted/batch-mode)
preprocess,
import GetImports
import DriverState
import DriverUtil
-import DriverMkDepend
import DriverPhases
import DriverFlags
import SysTools ( newTempName, addFilesToClean, getSysMan, copy )
import EXCEPTION
import DATA_IOREF ( readIORef, writeIORef )
-import Time ( ClockTime )
import Directory
import System
import IO
-- 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 -> IO FilePath
+preprocess :: DynFlags -> FilePath -> IO (DynFlags, FilePath)
preprocess dflags filename =
ASSERT2(isHaskellSrcFilename filename, text filename)
- do runPipeline (StopBefore Hsc) dflags ("preprocess")
+ runPipeline anyHsc "preprocess" dflags
False{-temporary output file-}
Nothing{-no specific output file-}
filename
Nothing{-no ModLocation-}
+
+
+-- ---------------------------------------------------------------------------
+-- Compile a file
+-- This is used in batch mode
+compileFile :: GhcMode -> DynFlags -> FilePath -> IO FilePath
+compileFile mode dflags src = do
+ exists <- doesFileExist src
+ when (not exists) $
+ throwDyn (CmdLineError ("file `" ++ src ++ "' does not exist"))
+
+ split <- readIORef v_Split_object_files
+ o_file <- readIORef v_Output_file
+ ghc_link <- readIORef v_GhcLink -- 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.
+ let maybe_o_file
+ | isLinkMode mode && not (isNoLink ghc_link) = Nothing
+ -- -o foo applies to linker
+ | otherwise = o_file
+ -- -o foo applies to the file we are compiling now
+
+ stop_phase = case mode of
+ StopBefore As | split -> SplitAs
+ StopBefore phase -> phase
+ other -> StopLn
+
+ mode_flag_string <- readIORef v_GhcModeFlag
+ (_, out_file) <- runPipeline stop_phase mode_flag_string dflags
+ True maybe_o_file src Nothing{-no ModLocation-}
+ return out_file
+
+
-- ---------------------------------------------------------------------------
-- Compile
-- NB. No old interface can also mean that the source has changed.
compile :: HscEnv
- -> Module
- -> ModLocation
- -> ClockTime -- timestamp of original source file
- -> Bool -- True <=> source unchanged
- -> Bool -- True <=> have object
- -> Maybe ModIface -- old interface, if available
+ -> ModSummary
+ -> Bool -- True <=> source unchanged
+ -> Bool -- True <=> have object
+ -> Maybe ModIface -- Old interface, if available
-> IO CompResult
data CompResult
= CompOK ModDetails -- New details
- (Maybe GlobalRdrEnv) -- Lexical environment for the module
- -- (Maybe because we may have loaded it from
- -- its precompiled interface)
ModIface -- New iface
(Maybe Linkable) -- New code; Nothing => compilation was not reqd
-- (old code is still valid)
| CompErrs
-compile hsc_env this_mod location src_timestamp
- source_unchanged have_object
- old_iface = do
+compile hsc_env mod_summary
+ source_unchanged have_object old_iface = do
- let dyn_flags = hsc_dflags hsc_env
+ let dyn_flags = hsc_dflags hsc_env
+ this_mod = ms_mod mod_summary
+ src_flavour = ms_hsc_src mod_summary
- showPass dyn_flags
- (showSDoc (text "Compiling" <+> ppr this_mod))
+ showPass dyn_flags ("Compiling " ++ showModMsg have_object mod_summary)
let verb = verbosity dyn_flags
+ 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 input_fnpp = expectJust "compile:hspp" (ms_hspp_file mod_summary)
when (verb >= 2) (hPutStrLn stderr ("compile: input file " ++ input_fnpp))
- -- add in the OPTIONS from the source file
+ -- Add in the OPTIONS from the source file
+ -- This is nasty: we've done this once already, in the compilation manager
+ -- It might be better to cache the flags in the ml_hspp_file field,say
opts <- getOptionsFromSource input_fnpp
(dyn_flags,unhandled_flags) <- processDynamicFlags opts dyn_flags
checkProcessArgsResult unhandled_flags input_fn
-- put back the old include paths afterward.
later (writeIORef v_Include_paths old_paths) $ do
- -- figure out what lang we're generating
- hsc_lang <- hscMaybeAdjustLang (hscLang dyn_flags)
- -- figure out what the next phase should be
- next_phase <- hscNextPhase hsc_lang
- -- figure out what file to generate the output into
- get_output_fn <- genOutputFilenameFunc False Nothing next_phase basename
- output_fn <- get_output_fn next_phase (Just location)
+ -- Figure out what lang we're generating
+ hsc_lang <- hscMaybeAdjustTarget StopLn src_flavour (hscTarget dyn_flags)
+ -- ... and what the next phase should be
+ next_phase <- hscNextPhase src_flavour hsc_lang
+ -- ... and what file to generate the output into
+ get_output_fn <- genOutputFilenameFunc next_phase False Nothing basename
+ output_fn <- get_output_fn next_phase (Just location)
- let dyn_flags' = dyn_flags { hscLang = hsc_lang,
+ let dyn_flags' = dyn_flags { hscTarget = hsc_lang,
hscOutName = output_fn,
hscStubCOutName = basename ++ "_stub.c",
hscStubHOutName = basename ++ "_stub.h",
extCoreName = basename ++ ".hcr" }
-- -no-recomp should also work with --make
- do_recomp <- readIORef v_Recomp
- let source_unchanged' = source_unchanged && do_recomp
+ let do_recomp = recompFlag dyn_flags
+ source_unchanged' = source_unchanged && do_recomp
hsc_env' = hsc_env { hsc_dflags = dyn_flags' }
-- run the compiler
- hsc_result <- hscMain hsc_env' printErrorsAndWarnings this_mod location
+ hsc_result <- hscMain hsc_env' printErrorsAndWarnings mod_summary
source_unchanged' have_object old_iface
case hsc_result of
HscFail -> return CompErrs
- HscNoRecomp details iface -> return (CompOK details Nothing iface Nothing)
+ HscNoRecomp details iface -> return (CompOK details iface Nothing)
+
+ HscRecomp details iface
+ stub_h_exists stub_c_exists maybe_interpreted_code
- HscRecomp details rdr_env iface
- stub_h_exists stub_c_exists maybe_interpreted_code -> do
+ | isHsBoot src_flavour -- No further compilation to do
+ -> return (CompOK details iface Nothing)
+
+ | otherwise -- Normal Haskell source files
+ -> do
let
maybe_stub_o <- compileStub dyn_flags' stub_c_exists
let stub_unlinked = case maybe_stub_o of
HscInterpreted ->
case maybe_interpreted_code of
#ifdef GHCI
- Just comp_bc -> return ([BCOs comp_bc], src_timestamp)
+ Just comp_bc -> return ([BCOs comp_bc], ms_hs_date mod_summary)
-- Why do we use the timestamp of the source file here,
-- rather than the current time? This works better in
-- the case where the local clock is out of sync
_other -> do
let object_filename = ml_obj_file location
- runPipeline (StopBefore Ln) dyn_flags ""
- True Nothing output_fn (Just location)
+ runPipeline StopLn "" dyn_flags
+ True Nothing output_fn (Just location)
-- the object filename comes from the ModLocation
o_time <- getModificationTime object_filename
let linkable = LM unlinked_time this_mod
(hs_unlinked ++ stub_unlinked)
- return (CompOK details rdr_env iface (Just linkable))
+ return (CompOK details iface (Just linkable))
-----------------------------------------------------------------------------
-- stub .h and .c files (for foreign export support)
| stub_c_exists = do
-- compile the _stub.c file w/ gcc
let stub_c = hscStubCOutName dflags
- stub_o <- runPipeline (StopBefore Ln) dflags "stub-compile"
- True{-persistent output-}
- Nothing{-no specific output file-}
- stub_c
- Nothing{-no ModLocation-}
+ (_, stub_o) <- runPipeline StopLn "stub-compile" dflags
+ True{-persistent output-}
+ Nothing{-no specific output file-}
+ stub_c
+ Nothing{-no ModLocation-}
return (Just stub_o)
hPutStrLn stderr (showSDoc (vcat (map ppr linkables)))
-- check for the -no-link flag
- omit_linking <- readIORef v_NoLink
- if omit_linking
+ ghc_link <- readIORef v_GhcLink
+ if isNoLink ghc_link
then do when (verb >= 3) $
- hPutStrLn stderr "link(batch): linking omitted (-no-link flag given)."
+ hPutStrLn stderr "link(batch): linking omitted (-c flag given)."
return Succeeded
else do
-- pipeline, but we throw away the resulting DynFlags at the end.
runPipeline
- :: GhcMode -- when to stop
- -> DynFlags -- dynamic flags
- -> String -- "stop after" flag
- -> Bool -- final output is persistent?
- -> Maybe FilePath -- where to put the output, optionally
- -> FilePath -- input filename
- -> Maybe ModLocation -- a ModLocation for this module, if we have one
- -> IO FilePath -- output filename
-
-runPipeline todo dflags stop_flag keep_output
+ :: Phase -- When to stop
+ -> String -- "GhcMode" flag as a string
+ -> DynFlags -- Dynamic flags
+ -> Bool -- Final output is persistent?
+ -> Maybe FilePath -- Where to put the output, optionally
+ -> FilePath -- Input filename
+ -> Maybe ModLocation -- A ModLocation for this module, if we have one
+ -> IO (DynFlags, FilePath) -- (final flags, output filename)
+
+runPipeline stop_phase mode_flag_string dflags keep_output
maybe_output_filename input_fn maybe_loc
= do
- split <- readIORef v_Split_object_files
let (basename, suffix) = splitFilename input_fn
start_phase = startPhase suffix
- stop_phase = case todo of
- StopBefore As | split -> SplitAs
- StopBefore phase -> phase
- DoMkDependHS -> Ln
- DoLink -> Ln
- DoMkDLL -> Ln
-
-- 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
- ("flag `" ++ stop_flag
+ ("flag `" ++ mode_flag_string
++ "' is incompatible with source file `"
++ input_fn ++ "'"))
-- generate a function which will be used to calculate output file names
-- as we go along.
- get_output_fn <- genOutputFilenameFunc keep_output maybe_output_filename
- stop_phase basename
+ get_output_fn <- genOutputFilenameFunc stop_phase keep_output
+ maybe_output_filename basename
- -- and execute the pipeline...
- (output_fn, maybe_loc) <-
- pipeLoop dflags start_phase stop_phase input_fn basename suffix
- get_output_fn maybe_loc
+ -- 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
+ -- 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.
- if keep_output
+ if keep_output
then 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 final_fn
+ return (dflags', final_fn)
else
- return output_fn
+ return (dflags', output_fn)
-pipeLoop :: DynFlags -> Phase -> Phase -> FilePath -> String -> Suffix
- -> (Phase -> Maybe ModLocation -> IO FilePath)
- -> Maybe ModLocation -> IO (FilePath, Maybe ModLocation)
+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
- get_output_fn maybe_loc
+pipeLoop dflags phase stop_phase
+ input_fn orig_basename orig_suff
+ orig_get_output_fn maybe_loc
- | phase == stop_phase = return (input_fn, maybe_loc) -- all done
+ | phase `eqPhase` stop_phase -- All done
+ = return (dflags, input_fn, maybe_loc)
- | not (phase `happensBefore` stop_phase) =
+ | 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
- maybe_next_phase <- runPhase phase dflags orig_basename
- orig_suff input_fn get_output_fn maybe_loc
- case maybe_next_phase of
- (Nothing, dflags, maybe_loc, output_fn) -> do
- -- we stopped early, but return the *final* filename
- -- (it presumably already exists)
- final_fn <- get_output_fn stop_phase maybe_loc
- return (final_fn, maybe_loc)
- (Just next_phase, dflags', maybe_loc, output_fn) ->
- pipeLoop dflags' next_phase stop_phase output_fn
- orig_basename orig_suff get_output_fn maybe_loc
-
-
-genOutputFilenameFunc :: Bool -> Maybe FilePath -> Phase -> String
+ = 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 }
+
+genOutputFilenameFunc :: Phase -> Bool -> Maybe FilePath -> String
-> IO (Phase{-next phase-} -> Maybe ModLocation -> IO FilePath)
-genOutputFilenameFunc keep_final_output maybe_output_filename
- stop_phase basename
+genOutputFilenameFunc stop_phase keep_final_output maybe_output_filename basename
= do
hcsuf <- readIORef v_HC_suf
odir <- readIORef v_Output_dir
keep_raw_s <- readIORef v_Keep_raw_s_files
keep_s <- readIORef v_Keep_s_files
let
- myPhaseInputExt HCc | Just s <- hcsuf = s
- myPhaseInputExt Ln = osuf
- myPhaseInputExt other = phaseInputExt other
+ myPhaseInputExt HCc = hcsuf
+ myPhaseInputExt StopLn = osuf
+ myPhaseInputExt other = phaseInputExt other
func next_phase maybe_location
| is_last_phase, Just f <- maybe_output_filename = return f
| otherwise = newTempName suffix
where
- is_last_phase = next_phase == stop_phase
+ is_last_phase = next_phase `eqPhase` stop_phase
-- sometimes, we keep output from intermediate stages
keep_this_output =
case next_phase of
- Ln -> True
+ StopLn -> True
Mangle | keep_raw_s -> True
As | keep_s -> True
HCc | keep_hc -> True
-- persistent object files get put in odir
persistent_fn
- | Ln <- next_phase = return odir_persistent
- | otherwise = return persistent
+ | StopLn <- next_phase = return odir_persistent
+ | otherwise = return persistent
persistent = basename ++ '.':suffix
-- 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
+runPhase :: Phase -- Do this phase first
+ -> Phase -- Stop just before this phase
-> DynFlags
-> String -- basename of original input source
-> String -- its extension
-> (Phase -> Maybe ModLocation -> IO FilePath)
-- how to calculate the output filename
-> Maybe ModLocation -- the ModLocation, if we have one
- -> IO (Maybe Phase, -- next phase
+ -> 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
-runPhase Unlit dflags _basename _suff input_fn get_output_fn maybe_loc
+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 Cpp maybe_loc
+ output_fn <- get_output_fn (Cpp sf) maybe_loc
SysTools.runUnlit dflags
(map SysTools.Option unlit_flags ++
, SysTools.FileOption "" output_fn
])
- return (Just Cpp, dflags, maybe_loc, 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
-runPhase Cpp dflags basename suff input_fn get_output_fn maybe_loc
+runPhase (Cpp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
= do src_opts <- getOptionsFromSource input_fn
(dflags,unhandled_flags) <- processDynamicFlags src_opts dflags
checkProcessArgsResult unhandled_flags (basename++'.':suff)
if not (cppFlag dflags) then
-- no need to preprocess CPP, just pass input file along
-- to the next phase of the pipeline.
- return (Just HsPp, dflags, maybe_loc, input_fn)
+ return (HsPp sf, dflags, maybe_loc, input_fn)
else do
- output_fn <- get_output_fn HsPp maybe_loc
+ output_fn <- get_output_fn (HsPp sf) maybe_loc
doCpp dflags True{-raw-} False{-no CC opts-} input_fn output_fn
- return (Just HsPp, dflags, maybe_loc, output_fn)
+ return (HsPp sf, dflags, maybe_loc, output_fn)
-------------------------------------------------------------------------------
-- HsPp phase
-runPhase HsPp dflags basename suff input_fn get_output_fn maybe_loc
+runPhase (HsPp sf) _stop dflags basename suff input_fn get_output_fn maybe_loc
= do if not (ppFlag dflags) then
-- no need to preprocess, just pass input file along
-- to the next phase of the pipeline.
- return (Just Hsc, dflags, maybe_loc, input_fn)
+ return (Hsc sf, dflags, maybe_loc, input_fn)
else do
let hspp_opts = getOpts dflags opt_F
hs_src_pp_opts <- readIORef v_Hs_source_pp_opts
let orig_fn = basename ++ '.':suff
- output_fn <- get_output_fn Hsc maybe_loc
+ output_fn <- get_output_fn (Hsc sf) maybe_loc
SysTools.runPp dflags
( [ SysTools.Option orig_fn
, SysTools.Option input_fn
map SysTools.Option hs_src_pp_opts ++
map SysTools.Option hspp_opts
)
- return (Just Hsc, dflags, maybe_loc, output_fn)
+ 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).
-runPhase Hsc dflags basename suff input_fn get_output_fn _maybe_loc = do
- todo <- readIORef v_GhcMode
- if todo == DoMkDependHS then do
- locn <- doMkDependHSPhase dflags basename suff input_fn
- return (Nothing, dflags, Just locn, input_fn) -- Ln is a dummy stop phase
-
- else do
- -- normal Hsc mode, not mkdependHS
+runPhase (Hsc src_flavour) stop dflags 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
-- gather the imports and module name
(hspp_buf,mod_name) <-
- if isExtCoreFilename ('.':suff)
- then do
- -- no explicit imports in ExtCore input.
- m <- getCoreModuleName input_fn
- return (Nothing, mkModule m)
- else do
- buf <- hGetStringBuffer input_fn
- (_,_,mod_name) <- getImports dflags buf input_fn
- return (Just buf, mod_name)
-
- -- build a ModLocation to pass to hscMain.
- location' <- mkHomeModLocation mod_name (basename ++ '.':suff)
-
- -- take -ohi into account if present
+ 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
+ ; (_,_,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 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
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?)
+ let 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
+ expl_o_file <- readIORef v_Output_file
+ ghc_link <- readIORef v_GhcLink
+ let location4 | Just ofile <- expl_o_file
+ , isNoLink ghc_link
+ = location3 { ml_obj_file = ofile }
+ | otherwise = location3
+
+ -- Tell the finder cache about this module
+ addHomeModuleToFinder mod_name location4
+
+ -- Make the ModSummary to hand to hscMain
+ src_timestamp <- getModificationTime (basename ++ '.':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 = Just input_fn,
+ ms_hspp_buf = hspp_buf,
+ ms_location = location4,
+ ms_hs_date = src_timestamp,
+ 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
- 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 = recompFlag 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
- hsc_lang <- hscMaybeAdjustLang (hscLang dflags)
- next_phase <- hscNextPhase hsc_lang
- output_fn <- get_output_fn next_phase (Just location)
+ hsc_lang <- hscMaybeAdjustTarget stop src_flavour (hscTarget dflags)
+ next_phase <- hscNextPhase src_flavour hsc_lang
+ output_fn <- get_output_fn next_phase (Just location4)
- let dflags' = dflags { hscLang = hsc_lang,
+ let dflags' = dflags { hscTarget = hsc_lang,
hscOutName = output_fn,
hscStubCOutName = basename ++ "_stub.c",
hscStubHOutName = basename ++ "_stub.h",
extCoreName = basename ++ ".hcr" }
+
hsc_env <- newHscEnv OneShot dflags'
-- run the compiler!
- result <- hscMain hsc_env printErrorsAndWarnings mod_name
- location{ ml_hspp_file = Just input_fn,
- ml_hspp_buf = hspp_buf }
- source_unchanged
- False
- Nothing -- no iface
+ result <- hscMain hsc_env printErrorsAndWarnings
+ mod_summary source_unchanged
+ False -- No object file
+ Nothing -- No iface
case result of
HscNoRecomp details iface -> do
SysTools.touch dflags' "Touching object file" o_file
- return (Nothing, dflags', Just location, output_fn)
+ return (StopLn, dflags', Just location4, o_file)
- HscRecomp _details _rdr_env _iface
+ HscRecomp _details _iface
stub_h_exists stub_c_exists
_maybe_interpreted_code -> do
- -- deal with stubs
+ -- Deal with stubs
maybe_stub_o <- compileStub dflags' stub_c_exists
case maybe_stub_o of
- Nothing -> return ()
+ Nothing -> return ()
Just stub_o -> add v_Ld_inputs stub_o
- case hscLang dflags' of
- HscNothing -> return (Nothing, dflags', Just location, output_fn)
- _ -> return (Just next_phase, dflags', Just location, output_fn)
+
+ -- In the case of hs-boot files, generate a dummy .o-boot
+ -- stamp file for the benefit of Make
+ case src_flavour of
+ HsBootFile -> SysTools.touch dflags' "Touching object file" o_file
+ other -> return ()
+
+ return (next_phase, dflags', Just location4, output_fn)
-----------------------------------------------------------------------------
-- Cmm phase
-runPhase CmmCpp dflags basename suff input_fn get_output_fn maybe_loc
+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 (Just Cmm, dflags, maybe_loc, output_fn)
+ return (Cmm, dflags, maybe_loc, output_fn)
-runPhase Cmm dflags basename suff input_fn get_output_fn maybe_loc
+runPhase Cmm stop dflags basename suff input_fn get_output_fn maybe_loc
= do
- hsc_lang <- hscMaybeAdjustLang (hscLang dflags)
- next_phase <- hscNextPhase hsc_lang
+ hsc_lang <- hscMaybeAdjustTarget stop HsSrcFile (hscTarget dflags)
+ next_phase <- hscNextPhase HsSrcFile hsc_lang
output_fn <- get_output_fn next_phase maybe_loc
- let dflags' = dflags { hscLang = hsc_lang,
+ let dflags' = dflags { hscTarget = hsc_lang,
hscOutName = output_fn,
hscStubCOutName = basename ++ "_stub.c",
hscStubHOutName = basename ++ "_stub.h",
when (not ok) $ throwDyn (PhaseFailed "cmm" (ExitFailure 1))
- return (Just next_phase, dflags, maybe_loc, output_fn)
+ 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.
-runPhase cc_phase dflags basename suff input_fn get_output_fn maybe_loc
- | cc_phase == Cc || cc_phase == HCc
+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
- cmdline_include_paths <- readIORef v_Include_paths
+ hcc = cc_phase `eqPhase` HCc
- split <- readIORef v_Split_object_files
- mangle <- readIORef v_Do_asm_mangling
-
- let hcc = cc_phase == HCc
-
- next_phase
- | hcc && mangle = Mangle
- | otherwise = As
-
- output_fn <- get_output_fn next_phase maybe_loc
+ cmdline_include_paths <- readIORef v_Include_paths
-- HC files have the dependent packages stamped into them
pkgs <- if hcc then getHCFilePackages input_fn else return []
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 dflags
+ pic_c_flags <- picCCOpts dflags
let verb = getVerbFlag dflags
excessPrecision <- readIORef v_Excess_precision
+ -- Decide next phase
+ mangle <- readIORef v_Do_asm_mangling
+ let next_phase
+ | hcc && mangle = Mangle
+ | otherwise = As
+ output_fn <- get_output_fn next_phase maybe_loc
+
-- force the C compiler to interpret this file as C when
-- compiling .hc files, by adding the -x c option.
- let langopt
- | cc_phase == HCc = [ SysTools.Option "-x", SysTools.Option "c"]
- | otherwise = [ ]
+ let langopt | hcc = [ SysTools.Option "-x", SysTools.Option "c"]
+ | otherwise = [ ]
SysTools.runCc dflags (langopt ++
[ SysTools.FileOption "" input_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", "-O" ]
++ pkg_extra_cc_opts
))
- return (Just next_phase, dflags, maybe_loc, output_fn)
+ return (next_phase, dflags, maybe_loc, output_fn)
-- ToDo: postprocess the output from gcc
-----------------------------------------------------------------------------
-- Mangle phase
-runPhase Mangle dflags _basename _suff input_fn get_output_fn maybe_loc
+runPhase Mangle stop dflags _basename _suff input_fn get_output_fn maybe_loc
= do let mangler_opts = getOpts dflags opt_m
- machdep_opts <- if (prefixMatch "i386" cTARGETPLATFORM)
- then do let n_regs = stolen_x86_regs dflags
- return [ show n_regs ]
- else return []
+
+#if i386_TARGET_ARCH
+ machdep_opts <- return [ show (stolen_x86_regs dflags) ]
+#else
+ machdep_opts <- return []
+#endif
split <- readIORef v_Split_object_files
let next_phase
]
++ map SysTools.Option machdep_opts)
- return (Just next_phase, dflags, maybe_loc, output_fn)
+ return (next_phase, dflags, maybe_loc, output_fn)
-----------------------------------------------------------------------------
-- Splitting phase
-runPhase SplitMangle dflags _basename _suff input_fn get_output_fn maybe_loc
+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"
addFilesToClean [ split_s_prefix ++ "__" ++ show n ++ ".s"
| n <- [1..n_files]]
- return (Just SplitAs, dflags, maybe_loc, "**splitmangle**")
+ return (SplitAs, dflags, maybe_loc, "**splitmangle**")
-- we don't use the filename
-----------------------------------------------------------------------------
-- As phase
-runPhase As dflags _basename _suff input_fn get_output_fn maybe_loc
+runPhase As stop dflags _basename _suff input_fn get_output_fn maybe_loc
= do let as_opts = getOpts dflags opt_a
cmdline_include_paths <- readIORef v_Include_paths
- output_fn <- get_output_fn Ln maybe_loc
+ output_fn <- get_output_fn StopLn maybe_loc
-- we create directories for the object file, because it
-- might be a hierarchical module.
, SysTools.FileOption "" output_fn
])
- return (Just Ln, dflags, maybe_loc, output_fn)
+ return (StopLn, dflags, maybe_loc, output_fn)
-runPhase SplitAs dflags basename _suff _input_fn get_output_fn maybe_loc
+runPhase SplitAs stop dflags basename _suff _input_fn get_output_fn maybe_loc
= do let as_opts = getOpts dflags opt_a
(split_s_prefix, n) <- readIORef v_Split_info
mapM_ assemble_file [1..n]
- output_fn <- get_output_fn Ln maybe_loc
- return (Just Ln, dflags, maybe_loc, output_fn)
+ output_fn <- get_output_fn StopLn maybe_loc
+ return (StopLn, dflags, maybe_loc, output_fn)
#ifdef ILX
-----------------------------------------------------------------------------
-- Ilx2Il phase
-- Run ilx2il over the ILX output, getting an IL file
-runPhase Ilx2Il dflags _basename _suff input_fn get_output_fn maybe_loc
+runPhase Ilx2Il stop dflags _basename _suff input_fn get_output_fn maybe_loc
= do let ilx2il_opts = getOpts dflags opt_I
SysTools.runIlx2il (map SysTools.Option ilx2il_opts
++ [ SysTools.Option "--no-add-suffix-to-assembly",
-- Ilasm phase
-- Run ilasm over the IL, getting a DLL
-runPhase Ilasm dflags _basename _suff input_fn get_output_fn maybe_loc
+runPhase Ilasm stop dflags _basename _suff input_fn get_output_fn maybe_loc
= do let ilasm_opts = getOpts dflags opt_i
SysTools.runIlasm (map SysTools.Option ilasm_opts
++ [ SysTools.Option "/QUIET",
pkg_frameworks <- getPackageFrameworks dflags dep_packages
let pkg_framework_opts = concat [ ["-framework", fw] | fw <- pkg_frameworks ]
-
frameworks <- readIORef v_Cmdline_frameworks
let framework_opts = concat [ ["-framework", fw] | fw <- reverse frameworks ]
-- reverse because they're added in reverse order from the cmd line
-- opts from -optl-<blah> (including -l<blah> options)
extra_ld_opts <- getStaticOpts v_Opt_l
- 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
-
ways <- readIORef v_Ways
-- Here are some libs that need to be linked at the *end* of
]
| otherwise = []
- let extra_os = if static || no_hs_main
- then []
- else []
-
(md_c_flags, _) <- machdepCCOpts dflags
SysTools.runLink dflags (
[ SysTools.Option verb
++ map SysTools.Option (
md_c_flags
++ o_files
- ++ extra_os
++ extra_ld_inputs
++ lib_path_opts
++ extra_ld_opts
| otherwise = SysTools.runCc dflags (SysTools.Option "-E" : args)
let target_defs =
- [ "-D" ++ cTARGETOS ++ "_TARGET_OS=1",
- "-D" ++ cTARGETARCH ++ "_TARGET_ARCH=1" ]
+ [ "-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
-- -----------------------------------------------------------------------------
-- Misc.
-hscNextPhase :: HscLang -> IO Phase
-hscNextPhase hsc_lang = do
+hscNextPhase :: HscSource -> HscTarget -> IO Phase
+hscNextPhase HsBootFile hsc_lang
+ = return StopLn
+
+hscNextPhase other hsc_lang = do
split <- readIORef v_Split_object_files
return (case hsc_lang of
HscC -> HCc
HscAsm | split -> SplitMangle
| otherwise -> As
- HscNothing -> HCc -- dummy (no output will be generated)
- HscInterpreted -> HCc -- "" ""
- _other -> HCc -- "" ""
+ HscNothing -> StopLn
+ HscInterpreted -> StopLn
+ _other -> StopLn
)
-hscMaybeAdjustLang :: HscLang -> IO HscLang
-hscMaybeAdjustLang current_hsc_lang = do
- todo <- readIORef v_GhcMode
- keep_hc <- readIORef v_Keep_hc_files
- let 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
- | todo == StopBefore HCc || keep_hc = HscC
- -- otherwise, stick to the plan
- | otherwise = current_hsc_lang
- return hsc_lang
+hscMaybeAdjustTarget :: Phase -> HscSource -> HscTarget -> IO HscTarget
+hscMaybeAdjustTarget stop HsBootFile current_hsc_lang
+ = return HscNothing -- No output (other than Foo.hi-boot) for hs-boot files
+hscMaybeAdjustTarget stop other current_hsc_lang
+ = do { keep_hc <- readIORef v_Keep_hc_files
+ ; let 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
+ ; return hsc_lang }
projects / ghc-hetmet.git / blobdiff