--
-- GHC Driver
--
--- (c) The University of Glasgow 2002
+-- (c) The University of Glasgow 2005
--
-----------------------------------------------------------------------------
-#include "../includes/ghcconfig.h"
-
module DriverPipeline (
+ -- Run a series of compilation steps in a pipeline, for a
+ -- collection of source files.
+ oneShot,
-- Interfaces for the batch-mode driver
- compileFile, staticLink,
+ staticLink,
-- Interfaces for the compilation manager (interpreted/batch-mode)
preprocess,
import Packages
import GetImports
-import DriverState
-import DriverUtil
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 RdrName ( GlobalRdrEnv )
import Panic
import StringBuffer ( hGetStringBuffer )
import BasicTypes ( SuccessFlag(..) )
import Maybes ( expectJust )
+import Ctype ( is_ident )
import ParserCoreUtils ( getCoreModuleName )
import EXCEPTION
-import DATA_IOREF ( readIORef, writeIORef )
+import DATA_IOREF ( readIORef, writeIORef, IORef )
import Directory
import System
preprocess :: DynFlags -> FilePath -> IO (DynFlags, FilePath)
preprocess dflags filename =
ASSERT2(isHaskellSrcFilename filename, text filename)
- runPipeline (StopBefore anyHsc) dflags ("preprocess")
- 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"))
-
- o_file <- readIORef v_Output_file
- no_link <- readIORef v_NoLink -- 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 | no_link = o_file
- | otherwise = Nothing
-
- stop_flag <- readIORef v_GhcModeFlag
- (_, out_file) <- runPipeline mode dflags stop_flag True maybe_o_file
- src Nothing{-no ModLocation-}
- return out_file
-
+ runPipeline anyHsc dflags filename 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 :: HscEnv
-> ModSummary
- -> Bool -- True <=> source unchanged
- -> Bool -- True <=> have object
+ -> Maybe Linkable -- Just linkable <=> source unchanged
-> 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)
+ = CompOK ModDetails -- New details
+ ModIface -- New iface
+ (Maybe Linkable) -- a Maybe, for the same reasons as hm_linkable
| CompErrs
-compile hsc_env mod_summary
- source_unchanged have_object old_iface = do
+compile hsc_env mod_summary maybe_old_linkable old_iface = do
- let dyn_flags = hsc_dflags hsc_env
+ let dflags0 = hsc_dflags hsc_env
this_mod = ms_mod mod_summary
src_flavour = ms_hsc_src mod_summary
- showPass dyn_flags ("Compiling " ++ showModMsg have_object mod_summary)
+ 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 verb = verbosity dflags0
let location = ms_location mod_summary
let input_fn = expectJust "compile:hs" (ml_hs_file location)
let input_fnpp = expectJust "compile:hspp" (ms_hspp_file mod_summary)
-- 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
+ (dflags1,unhandled_flags) <- parseDynamicFlags dflags0 opts
checkProcessArgsResult unhandled_flags input_fn
let (basename, _) = splitFilename input_fn
-- 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 <- readIORef v_Include_paths
- writeIORef v_Include_paths (current_dir : old_paths)
- -- put back the old include paths afterward.
- later (writeIORef v_Include_paths old_paths) $ do
+ old_paths = includePaths dflags1
+ dflags = dflags1 { includePaths = current_dir : old_paths }
-- Figure out what lang we're generating
- todo <- readIORef v_GhcMode
- hsc_lang <- hscMaybeAdjustTarget todo src_flavour (hscTarget dyn_flags)
+ let hsc_lang = hscMaybeAdjustTarget dflags StopLn src_flavour (hscTarget dflags)
-- ... and what the next phase should be
- next_phase <- hscNextPhase src_flavour hsc_lang
+ let next_phase = hscNextPhase dflags 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)
+ output_fn <- getOutputFilename dflags next_phase
+ Temporary basename next_phase (Just location)
- let dyn_flags' = dyn_flags { hscTarget = hsc_lang,
+ let dflags' = dflags { hscTarget = hsc_lang,
hscOutName = output_fn,
hscStubCOutName = basename ++ "_stub.c",
hscStubHOutName = basename ++ "_stub.h",
extCoreName = basename ++ ".hcr" }
-- -no-recomp should also work with --make
- let do_recomp = recompFlag dyn_flags
- source_unchanged' = source_unchanged && do_recomp
- hsc_env' = hsc_env { hsc_dflags = dyn_flags' }
+ let do_recomp = dopt Opt_RecompChecking dflags
+ source_unchanged = isJust maybe_old_linkable && do_recomp
+ hsc_env' = hsc_env { hsc_dflags = dflags' }
-- run the compiler
hsc_result <- hscMain hsc_env' printErrorsAndWarnings mod_summary
- source_unchanged' have_object old_iface
+ 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 ->
+ ASSERT(isJust maybe_old_linkable)
+ return (CompOK details iface maybe_old_linkable)
- HscRecomp details rdr_env iface
+ HscRecomp details iface
stub_h_exists stub_c_exists maybe_interpreted_code
| isHsBoot src_flavour -- No further compilation to do
- -> return (CompOK details rdr_env iface Nothing)
+ -> return (CompOK details iface Nothing)
| otherwise -- Normal Haskell source files
-> do
let
- maybe_stub_o <- compileStub dyn_flags' stub_c_exists
+ maybe_stub_o <- compileStub dflags' stub_c_exists
let stub_unlinked = case maybe_stub_o of
Nothing -> []
Just stub_o -> [ DotO stub_o ]
_other -> do
let object_filename = ml_obj_file location
- runPipeline DoLink dyn_flags ""
- True Nothing output_fn (Just location)
+ runPipeline StopLn dflags output_fn Persistent
+ (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 DoLink dflags "stub-compile"
- True{-persistent output-}
- Nothing{-no specific output file-}
- stub_c
- Nothing{-no ModLocation-}
+ (_, stub_o) <- runPipeline StopLn dflags
+ stub_c Persistent Nothing{-no ModLocation-}
return (Just 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 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 (fromJust.hm_linkable) home_mod_infos
when (verb >= 3) $ do
hPutStrLn stderr "link: linkables are ..."
hPutStrLn stderr (showSDoc (vcat (map ppr linkables)))
-- check for the -no-link flag
- omit_linking <- readIORef v_NoLink
- if omit_linking
+ if isNoLink (ghcLink dflags)
then do when (verb >= 3) $
hPutStrLn stderr "link(batch): linking omitted (-c flag given)."
return Succeeded
where
verb = verbosity dflags
+
+-- -----------------------------------------------------------------------------
+-- Compile files in one-shot mode.
+
+oneShot :: DynFlags -> Phase -> [String] -> IO ()
+oneShot dflags stop_phase srcs = do
+ o_files <- mapM (compileFile dflags stop_phase) srcs
+ doLink dflags stop_phase o_files
+
+compileFile :: DynFlags -> Phase -> FilePath -> IO FilePath
+compileFile dflags stop_phase src = do
+ 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 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 = []
+
+
-- ---------------------------------------------------------------------------
-- Run a compilation pipeline, consisting of multiple phases.
+-- This is the interface to the compilation pipeline, which runs
+-- a series of compilation steps on a single source file, specifying
+-- at which stage to stop.
+
-- The DynFlags can be modified by phases in the pipeline (eg. by
--- OPTIONS pragmas), and the changes affect later phases in the
--- pipeline, but we throw away the resulting DynFlags at the end.
+-- GHC_OPTIONS pragmas), and the changes affect later phases in the
+-- pipeline.
+
+data PipelineOutput
+ = Temporary
+ -- output should be to a temporary file: we're going to
+ -- run more compilation steps on this output later
+ | Persistent
+ -- we want a persistent file, i.e. a file in the current directory
+ -- derived from the input filename, but with the appropriate extension.
+ -- eg. in "ghc -c Foo.hs" the output goes into ./Foo.o.
+ | SpecificFile FilePath
+ -- the output must go into the specified file.
runPipeline
- :: 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
+ :: Phase -- When to stop
+ -> DynFlags -- Dynamic flags
+ -> FilePath -- Input filename
+ -> PipelineOutput -- Output filename
+ -> Maybe ModLocation -- A ModLocation, if this is a Haskell module
-> IO (DynFlags, FilePath) -- (final flags, output filename)
-runPipeline todo dflags stop_flag keep_output
- maybe_output_filename input_fn maybe_loc
+runPipeline stop_phase dflags input_fn output maybe_loc
= do
- split <- readIORef v_Split_object_files
let (basename, suffix) = splitFilename input_fn
start_phase = startPhase suffix
- todo' = case todo of
- StopBefore As | split -> StopBefore SplitAs
- other -> todo
-
-- 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.
- --
- let stop_phase = case todo' of
- StopBefore phase -> phase
- other -> StopLn
when (not (start_phase `happensBefore` stop_phase)) $
throwDyn (UsageError
- ("flag `" ++ stop_flag
- ++ "' is incompatible with source file `"
- ++ input_fn ++ "'"))
+ ("cannot compile this file to desired target: "
+ ++ input_fn))
- -- generate a function which will be used to calculate output file names
- -- as we go along.
- get_output_fn <- genOutputFilenameFunc stop_phase keep_output
- maybe_output_filename basename
+ -- 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 todo' dflags start_phase stop_phase input_fn
- basename suffix get_output_fn maybe_loc
+ (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.
- 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
+ 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)
- else
- return (dflags', output_fn)
+ return (dflags', final_fn)
+
-pipeLoop :: GhcMode -> DynFlags -> Phase -> Phase
+pipeLoop :: DynFlags -> Phase -> Phase
-> FilePath -> String -> Suffix
-> (Phase -> Maybe ModLocation -> IO FilePath)
-> Maybe ModLocation
-> IO (DynFlags, FilePath, Maybe ModLocation)
-pipeLoop orig_todo dflags phase stop_phase
+pipeLoop dflags phase stop_phase
input_fn orig_basename orig_suff
orig_get_output_fn maybe_loc
| otherwise
= do { (next_phase, dflags', maybe_loc, output_fn)
- <- runPhase phase orig_todo dflags orig_basename
+ <- runPhase phase stop_phase dflags orig_basename
orig_suff input_fn orig_get_output_fn maybe_loc
- ; pipeLoop orig_todo dflags' next_phase stop_phase output_fn
+ ; 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 stop_phase keep_final_output maybe_output_filename basename
- = do
- hcsuf <- readIORef v_HC_suf
- odir <- readIORef v_Output_dir
- osuf <- readIORef v_Object_suf
- 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
- let
+getOutputFilename
+ :: DynFlags -> Phase -> PipelineOutput -> String
+ -> Phase{-next phase-} -> Maybe ModLocation -> IO FilePath
+getOutputFilename dflags stop_phase output basename
+ = func
+ where
+ hcsuf = hcSuf dflags
+ odir = outputDir 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, Just f <- maybe_output_filename = return f
- | is_last_phase && keep_final_output = persistent_fn
- | keep_this_output = persistent_fn
- | otherwise = newTempName suffix
-
+ | 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
| Just d <- odir = replaceFilenameDirectory persistent d
| otherwise = persistent
- return func
-
-- -----------------------------------------------------------------------------
-- Each phase in the pipeline returns the next phase to execute, and the
-- 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
- -> GhcMode
+runPhase :: Phase -- Do this phase first
+ -> Phase -- Stop just before this phase
-> DynFlags
-> String -- basename of original input source
-> String -- its extension
-------------------------------------------------------------------------------
-- Unlit phase
-runPhase (Unlit sf) _todo 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 sf) maybe_loc
-- Cpp phase : (a) gets OPTIONS out of file
-- (b) runs cpp if necessary
-runPhase (Cpp sf) _todo dflags basename suff input_fn get_output_fn maybe_loc
+runPhase (Cpp sf) _stop dflags0 basename suff input_fn get_output_fn maybe_loc
= do src_opts <- getOptionsFromSource input_fn
- (dflags,unhandled_flags) <- processDynamicFlags src_opts dflags
+ (dflags,unhandled_flags) <- parseDynamicFlags dflags0 src_opts
checkProcessArgsResult unhandled_flags (basename++'.':suff)
- if not (cppFlag dflags) 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 (HsPp sf, dflags, maybe_loc, input_fn)
-------------------------------------------------------------------------------
-- HsPp phase
-runPhase (HsPp sf) _todo dflags basename suff input_fn get_output_fn maybe_loc
- = do if not (ppFlag dflags) 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 (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 sf) maybe_loc
SysTools.runPp dflags
, SysTools.Option input_fn
, SysTools.FileOption "" output_fn
] ++
- map SysTools.Option hs_src_pp_opts ++
map SysTools.Option hspp_opts
)
return (Hsc sf, dflags, maybe_loc, output_fn)
-- Compilation of a single module, in "legacy" mode (_not_ under
-- the direction of the compilation manager).
-runPhase (Hsc src_flavour) todo dflags basename suff input_fn get_output_fn _maybe_loc
+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
-- 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
(hspp_buf,mod_name) <-
-- 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
+ location1 <- mkHomeModLocation2 dflags mod_name basename suff
-- Boot-ify it if necessary
let location2 | isHsBoot src_flavour = addBootSuffixLocn 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 location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
+ let ohi = outputHi dflags
+ location3 | Just fn <- ohi = location2{ ml_hi_file = fn }
| otherwise = location2
-- Take -o into account if present
-- (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
- no_link <- readIORef v_NoLink
- let location4 | Just ofile <- expl_o_file, no_link
+ let expl_o_file = outputFile dflags
+ location4 | Just ofile <- expl_o_file
+ , isNoLink (ghcLink dflags)
= 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
-- 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?)
--
-- 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.
- let do_recomp = recompFlag dflags
+ let do_recomp = dopt Opt_RecompChecking dflags
source_unchanged <-
- if not (do_recomp && case todo of { DoLink -> True; other -> False })
- then return False
+ 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 return False
-- get the DynFlags
- hsc_lang <- hscMaybeAdjustTarget todo src_flavour (hscTarget dflags)
- next_phase <- hscNextPhase src_flavour hsc_lang
+ 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,
hscStubHOutName = basename ++ "_stub.h",
extCoreName = basename ++ ".hcr" }
- hsc_env <- newHscEnv OneShot dflags'
+ hsc_env <- newHscEnv dflags'
+
+ -- Tell the finder cache about this module
+ addHomeModuleToFinder hsc_env mod_name location4
-- run the compiler!
result <- hscMain hsc_env printErrorsAndWarnings
SysTools.touch dflags' "Touching object file" o_file
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
maybe_stub_o <- compileStub dflags' stub_c_exists
case maybe_stub_o of
Nothing -> return ()
- Just stub_o -> add v_Ld_inputs stub_o
+ Just stub_o -> 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
-----------------------------------------------------------------------------
-- Cmm phase
-runPhase CmmCpp todo 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 (Cmm, dflags, maybe_loc, output_fn)
-runPhase Cmm todo 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 <- hscMaybeAdjustTarget todo HsSrcFile (hscTarget dflags)
- next_phase <- hscNextPhase HsSrcFile hsc_lang
+ 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
let dflags' = dflags { hscTarget = hsc_lang,
-- 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 todo dflags basename suff input_fn get_output_fn maybe_loc
+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
- cmdline_include_paths <- readIORef v_Include_paths
+ let cmdline_include_paths = includePaths dflags
-- 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)
- (md_c_flags, md_regd_c_flags) <- machdepCCOpts dflags
- pic_c_flags <- picCCOpts dflags
+ let (md_c_flags, md_regd_c_flags) = machdepCCOpts dflags
+ let pic_c_flags = picCCOpts dflags
let verb = getVerbFlag dflags
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
-- Decide next phase
- mangle <- readIORef v_Do_asm_mangling
- let next_phase
+
+ let mangle = dopt Opt_DoAsmMangling dflags
+ next_phase
| hcc && mangle = Mangle
| otherwise = As
output_fn <- get_output_fn next_phase maybe_loc
-----------------------------------------------------------------------------
-- Mangle phase
-runPhase Mangle todo 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
#if i386_TARGET_ARCH
machdep_opts <- return []
#endif
- split <- readIORef v_Split_object_files
- let next_phase
+ let split = dopt Opt_SplitObjs dflags
+ next_phase
| split = SplitMangle
| otherwise = As
output_fn <- get_output_fn next_phase maybe_loc
-----------------------------------------------------------------------------
-- Splitting phase
-runPhase SplitMangle todo 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"
+ split_s_prefix <- SysTools.newTempName dflags "split"
let n_files_fn = split_s_prefix
SysTools.runSplit dflags
-----------------------------------------------------------------------------
-- As phase
-runPhase As todo 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
+ let cmdline_include_paths = includePaths dflags
output_fn <- get_output_fn StopLn maybe_loc
return (StopLn, dflags, maybe_loc, output_fn)
-runPhase SplitAs todo 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
- odir <- readIORef v_Output_dir
- let real_odir = case odir of
- Nothing -> basename ++ "_split"
- Just d -> d
+ let real_odir
+ | Just d <- outputDir dflags = d
+ | otherwise = basename ++ "_split"
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
+ let osuf = objectSuf dflags
+ let real_o = replaceFilenameSuffix output_o osuf
SysTools.runAs dflags
(map SysTools.Option as_opts ++
[ SysTools.Option "-c"
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 todo 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",
- SysTools.Option "mscorlib",
- SysTools.Option "-o",
- SysTools.FileOption "" output_fn,
- SysTools.FileOption "" input_fn ])
- return True
-
------------------------------------------------------------------------------
--- Ilasm phase
--- Run ilasm over the IL, getting a DLL
-
-runPhase Ilasm todo 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",
- SysTools.Option "/DLL",
- SysTools.FileOption "/OUT=" output_fn,
- SysTools.FileOption "" input_fn ])
- return True
-
-#endif /* ILX */
-
-----------------------------------------------------------------------------
-- MoveBinary sort-of-phase
-- After having produced a binary, move it somewhere else and generate a
staticLink :: DynFlags -> [FilePath] -> [PackageId] -> IO ()
staticLink dflags o_files dep_packages = do
let verb = getVerbFlag dflags
- static <- readIORef v_Static
- no_hs_main <- readIORef v_NoHsMain
-- 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 o_file = outputFile dflags
#if defined(mingw32_HOST_OS)
let output_fn = case o_file of { Just s -> s; Nothing -> "main.exe"; }
#else
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 dflags 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
+ let framework_paths = frameworkPaths dflags
+ framework_path_opts = map ("-F"++) framework_paths
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 ]
+
+ 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
- ways <- readIORef v_Ways
+ let ways = wayNames dflags
-- Here are some libs that need to be linked at the *end* of
-- the command line, because they contain symbols that are referred to
]
| otherwise = []
- (md_c_flags, _) <- machdepCCOpts dflags
+ let (md_c_flags, _) = machdepCCOpts dflags
SysTools.runLink dflags (
[ SysTools.Option verb
, SysTools.Option "-o"
))
-- parallel only: move binary to another dir -- HWL
- ways_ <- readIORef v_Ways
- when (WayPar `elem` ways_)
+ when (WayPar `elem` ways)
(do success <- runPhase_MoveBinary output_fn
if success then return ()
else throwDyn (InstallationError ("cannot move binary to PVM dir")))
doMkDLL :: DynFlags -> [String] -> [PackageId] -> IO ()
doMkDLL dflags o_files dep_packages = do
let verb = getVerbFlag dflags
- static <- readIORef v_Static
- no_hs_main <- readIORef v_NoHsMain
-
- o_file <- readIORef v_Output_file
+ 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 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 dflags dep_packages
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
let pstate = pkgState dflags
rts_id | ExtPackage id <- rtsPackageId pstate = id
else [ head (libraryDirs rts_pkg) ++ "/Main.dll_o",
head (libraryDirs base_pkg) ++ "/PrelMain.dll_o" ]
- (md_c_flags, _) <- machdepCCOpts dflags
+ let (md_c_flags, _) = machdepCCOpts dflags
SysTools.runMkDLL dflags
([ SysTools.Option verb
, SysTools.Option "-o"
))
-- -----------------------------------------------------------------------------
--- Misc.
+-- 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
-
- cmdline_include_paths <- readIORef v_Include_paths
+ let cmdline_include_paths = includePaths dflags
pkg_include_dirs <- getPackageIncludePath dflags []
let include_paths = foldr (\ x xs -> "-I" : x : xs) []
let verb = getVerbFlag dflags
- cc_opts <- if not include_cc_opts
- then return []
- else do let optc = getOpts dflags opt_c
- (md_c_flags, _) <- machdepCCOpts dflags
- return (optc ++ md_c_flags)
+ 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)
, 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__"
+ ]
+
+-----------------------------------------------------------------------------
+-- Reading OPTIONS pragmas
+
+getOptionsFromSource
+ :: String -- input file
+ -> IO [String] -- options, if any
+getOptionsFromSource file
+ = do h <- openFile file ReadMode
+ look h `finally` hClose h
+ where
+ look h = do
+ r <- tryJust ioErrors (hGetLine h)
+ case r of
+ Left e | isEOFError e -> return []
+ | otherwise -> ioError e
+ Right l' -> do
+ let l = removeSpaces l'
+ case () of
+ () | null l -> look h
+ | prefixMatch "#" l -> look h
+ | prefixMatch "{-# LINE" l -> look h -- -}
+ | Just opts <- matchOptions l
+ -> do rest <- look h
+ return (opts ++ rest)
+ | otherwise -> return []
+
+-- detect {-# OPTIONS_GHC ... #-}. For the time being, we accept OPTIONS
+-- instead of OPTIONS_GHC, but that is deprecated.
+matchOptions s
+ | Just s1 <- maybePrefixMatch "{-#" s -- -}
+ = matchOptions1 (removeSpaces s1)
+ | otherwise
+ = Nothing
+ where
+ matchOptions1 s
+ | Just s2 <- maybePrefixMatch "OPTIONS" s
+ = case () of
+ _ | Just s3 <- maybePrefixMatch "_GHC" s2, not (is_ident (head s3))
+ -> matchOptions2 s3
+ | not (is_ident (head s2))
+ -> matchOptions2 s2
+ | otherwise
+ -> Just [] -- OPTIONS_anything is ignored, not treated as start of source
+ | Just s2 <- maybePrefixMatch "INCLUDE" s, not (is_ident (head s2)),
+ Just s3 <- maybePrefixMatch "}-#" (reverse s2)
+ = Just ["-#include", removeSpaces (reverse s3)]
+ | otherwise = Nothing
+ matchOptions2 s
+ | Just s3 <- maybePrefixMatch "}-#" (reverse s) = Just (words (reverse s3))
+ | otherwise = Nothing
+
+
-- -----------------------------------------------------------------------------
-- Misc.
-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 -> StopLn
- HscInterpreted -> StopLn
- _other -> StopLn
- )
-
-hscMaybeAdjustTarget :: GhcMode -> HscSource -> HscTarget -> IO HscTarget
-hscMaybeAdjustTarget todo HsBootFile current_hsc_lang
- = return HscNothing -- No output (other than Foo.hi-boot) for hs-boot files
-hscMaybeAdjustTarget todo other current_hsc_lang
- = do { keep_hc <- readIORef v_Keep_hc_files
- ; let hsc_lang
+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
- | StopBefore HCc <- todo = HscC
- | keep_hc = HscC
+ | HCc <- stop = HscC
+ | keep_hc = HscC
-- otherwise, stick to the plan
| otherwise = current_hsc_lang
- ; return hsc_lang }
+
+GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
+ -- The split prefix and number of files
projects / ghc-hetmet.git / blobdiff