2 -- Temporary, until rtsIsProfiled is fixed
8 -- (c) The University of Glasgow 2005
11 -- Most flags are dynamic flags, which means they can change from
12 -- compilation to compilation using @OPTIONS_GHC@ pragmas, and in a
13 -- multi-session GHC each session can be using different dynamic
14 -- flags. Dynamic flags can also be set at the prompt in GHCi.
16 -- * Dynamic flags and associated configuration types
21 flattenExtensionFlags,
22 ensureFlattenedExtensionFlags,
27 HscTarget(..), isObjectTarget, defaultObjectTarget,
28 GhcMode(..), isOneShot,
29 GhcLink(..), isNoLink,
33 fFlags, fLangFlags, xFlags,
37 -- ** Manipulating DynFlags
38 defaultDynFlags, -- DynFlags
39 initDynFlags, -- DynFlags -> IO DynFlags
41 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
48 -- ** Parsing DynFlags
50 parseDynamicNoPackageFlags,
53 supportedLanguagesAndExtensions,
55 -- ** DynFlag C compiler options
56 machdepCCOpts, picCCOpts,
58 -- * Configuration of the stg-to-stg passes
62 -- * Compiler configuration suitable for display to the user
66 -- Only in stage 2 can we be sure that the RTS
67 -- exposes the appropriate runtime boolean
72 #include "HsVersions.h"
74 #ifndef OMIT_NATIVE_CODEGEN
79 import PrelNames ( mAIN )
81 import {-# SOURCE #-} Packages (PackageState)
82 import DriverPhases ( Phase(..), phaseInputExt )
85 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
88 import Maybes ( orElse )
93 import Foreign.C ( CInt )
94 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
96 import System.IO.Unsafe ( unsafePerformIO )
98 import Control.Monad ( when )
102 import System.FilePath
103 import System.IO ( stderr, hPutChar )
105 -- -----------------------------------------------------------------------------
108 -- | Enumerates the simple on-or-off dynamic flags
114 | Opt_D_dump_cmmz_pretty
118 | Opt_D_dump_asm_native
119 | Opt_D_dump_asm_liveness
120 | Opt_D_dump_asm_coalesce
121 | Opt_D_dump_asm_regalloc
122 | Opt_D_dump_asm_regalloc_stages
123 | Opt_D_dump_asm_conflicts
124 | Opt_D_dump_asm_stats
125 | Opt_D_dump_asm_expanded
132 | Opt_D_dump_inlinings
133 | Opt_D_dump_rule_firings
134 | Opt_D_dump_occur_anal
138 | Opt_D_dump_simpl_iterations
139 | Opt_D_dump_simpl_phases
148 | Opt_D_dump_worker_wrapper
149 | Opt_D_dump_rn_trace
150 | Opt_D_dump_rn_stats
152 | Opt_D_dump_simpl_stats
153 | Opt_D_dump_tc_trace
154 | Opt_D_dump_if_trace
161 | Opt_D_verbose_core2core
162 | Opt_D_verbose_stg2stg
164 | Opt_D_dump_hi_diffs
165 | Opt_D_dump_minimal_imports
166 | Opt_D_dump_mod_cycles
167 | Opt_D_dump_view_pattern_commoning
168 | Opt_D_faststring_stats
169 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
170 | Opt_D_no_debug_output
176 | Opt_WarnIsError -- -Werror; makes warnings fatal
177 | Opt_WarnDuplicateExports
179 | Opt_WarnImplicitPrelude
180 | Opt_WarnIncompletePatterns
181 | Opt_WarnIncompletePatternsRecUpd
182 | Opt_WarnMissingFields
183 | Opt_WarnMissingImportList
184 | Opt_WarnMissingMethods
185 | Opt_WarnMissingSigs
186 | Opt_WarnNameShadowing
187 | Opt_WarnOverlappingPatterns
188 | Opt_WarnSimplePatterns
189 | Opt_WarnTypeDefaults
190 | Opt_WarnMonomorphism
191 | Opt_WarnUnusedBinds
192 | Opt_WarnUnusedImports
193 | Opt_WarnUnusedMatches
194 | Opt_WarnWarningsDeprecations
195 | Opt_WarnDeprecatedFlags
196 | Opt_WarnDodgyExports
197 | Opt_WarnDodgyImports
200 | Opt_WarnUnrecognisedPragmas
201 | Opt_WarnDodgyForeignImports
202 | Opt_WarnLazyUnliftedBindings
203 | Opt_WarnUnusedDoBind
204 | Opt_WarnWrongDoBind
205 | Opt_WarnAlternativeLayoutRuleTransitional
207 | Opt_PrintExplicitForalls
214 | Opt_StaticArgumentTransformation
218 | Opt_DoLambdaEtaExpansion
222 | Opt_UnboxStrictFields
225 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
227 | Opt_RegsGraph -- do graph coloring register allocation
228 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
231 | Opt_IgnoreInterfacePragmas
232 | Opt_OmitInterfacePragmas
233 | Opt_ExposeAllUnfoldings
236 | Opt_AutoSccsOnAllToplevs
237 | Opt_AutoSccsOnExportedToplevs
238 | Opt_AutoSccsOnIndividualCafs
245 | Opt_ExcessPrecision
246 | Opt_EagerBlackHoling
247 | Opt_ReadUserPackageConf
251 | Opt_HideAllPackages
252 | Opt_PrintBindResult
256 | Opt_BreakOnException
258 | Opt_PrintEvldWithShow
259 | Opt_PrintBindContents
262 | Opt_EmitExternalCore
264 | Opt_BuildingCabalPackage
270 | Opt_ConvertToZipCfgAndBack
271 | Opt_AutoLinkPackages
272 | Opt_ImplicitImportQualified
281 | Opt_KeepRawTokenStream
286 data Language = Haskell98 | Haskell2010
290 | Opt_OverlappingInstances
291 | Opt_UndecidableInstances
292 | Opt_IncoherentInstances
293 | Opt_MonomorphismRestriction
296 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
297 | Opt_ForeignFunctionInterface
298 | Opt_UnliftedFFITypes
299 | Opt_GHCForeignImportPrim
300 | Opt_PArr -- Syntactic support for parallel arrays
301 | Opt_Arrows -- Arrow-notation syntax
302 | Opt_TemplateHaskell
305 | Opt_Generics -- "Derivable type classes"
306 | Opt_ImplicitPrelude
307 | Opt_ScopedTypeVariables
311 | Opt_OverloadedStrings
312 | Opt_DisambiguateRecordFields
313 | Opt_RecordWildCards
319 | Opt_DoAndIfThenElse
321 | Opt_StandaloneDeriving
322 | Opt_DeriveDataTypeable
324 | Opt_DeriveTraversable
327 | Opt_TypeSynonymInstances
328 | Opt_FlexibleContexts
329 | Opt_FlexibleInstances
330 | Opt_ConstrainedClassMethods
331 | Opt_MultiParamTypeClasses
332 | Opt_FunctionalDependencies
334 | Opt_PolymorphicComponents
335 | Opt_ExistentialQuantification
339 | Opt_ParallelListComp
340 | Opt_TransformListComp
341 | Opt_GeneralizedNewtypeDeriving
344 | Opt_PostfixOperators
347 | Opt_LiberalTypeSynonyms
350 | Opt_ImpredicativeTypes
353 | Opt_NewQualifiedOperators
355 | Opt_AlternativeLayoutRule
356 | Opt_AlternativeLayoutRuleTransitional
357 | Opt_DatatypeContexts
360 -- | Contains not only a collection of 'DynFlag's but also a plethora of
361 -- information relating to the compilation of a single file or GHC session
362 data DynFlags = DynFlags {
365 hscTarget :: HscTarget,
366 hscOutName :: String, -- ^ Name of the output file
367 extCoreName :: String, -- ^ Name of the .hcr output file
368 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
369 optLevel :: Int, -- ^ Optimisation level
370 simplPhases :: Int, -- ^ Number of simplifier phases
371 maxSimplIterations :: Int, -- ^ Max simplifier iterations
372 shouldDumpSimplPhase :: Maybe String,
373 ruleCheck :: Maybe String,
374 strictnessBefore :: [Int], -- ^ Additional demand analysis
376 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
377 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
378 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
380 #ifndef OMIT_NATIVE_CODEGEN
381 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
383 stolen_x86_regs :: Int,
384 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
385 importPaths :: [FilePath],
387 mainFunIs :: Maybe String,
388 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
390 dphBackend :: DPHBackend,
392 thisPackage :: PackageId, -- ^ name of package currently being compiled
395 ways :: [Way], -- ^ Way flags from the command line
396 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
397 rtsBuildTag :: String, -- ^ The RTS \"way\"
399 -- For object splitting
400 splitInfo :: Maybe (String,Int),
403 objectDir :: Maybe String,
404 dylibInstallName :: Maybe String,
405 hiDir :: Maybe String,
406 stubDir :: Maybe String,
412 outputFile :: Maybe String,
413 outputHi :: Maybe String,
414 dynLibLoader :: DynLibLoader,
416 -- | This is set by 'DriverPipeline.runPipeline' based on where
417 -- its output is going.
418 dumpPrefix :: Maybe FilePath,
420 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
421 -- Set by @-ddump-file-prefix@
422 dumpPrefixForce :: Maybe FilePath,
424 includePaths :: [String],
425 libraryPaths :: [String],
426 frameworkPaths :: [String], -- used on darwin only
427 cmdlineFrameworks :: [String], -- ditto
428 tmpDir :: String, -- no trailing '/'
430 ghcUsagePath :: FilePath, -- Filled in by SysTools
431 ghciUsagePath :: FilePath, -- ditto
432 rtsOpts :: Maybe String,
433 rtsOptsEnabled :: RtsOptsEnabled,
435 hpcDir :: String, -- ^ Path to store the .mix files
437 -- options for particular phases
445 opt_windres :: [String],
446 opt_lo :: [String], -- LLVM: llvm optimiser
447 opt_lc :: [String], -- LLVM: llc static compiler
449 -- commands for particular phases
451 pgm_P :: (String,[Option]),
453 pgm_c :: (String,[Option]),
454 pgm_m :: (String,[Option]),
455 pgm_s :: (String,[Option]),
456 pgm_a :: (String,[Option]),
457 pgm_l :: (String,[Option]),
458 pgm_dll :: (String,[Option]),
460 pgm_sysman :: String,
461 pgm_windres :: String,
462 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
463 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
466 depMakefile :: FilePath,
467 depIncludePkgDeps :: Bool,
468 depExcludeMods :: [ModuleName],
469 depSuffixes :: [String],
472 extraPkgConfs :: [FilePath],
473 topDir :: FilePath, -- filled in by SysTools
474 systemPackageConfig :: FilePath, -- ditto
475 -- ^ The @-package-conf@ flags given on the command line, in the order
478 packageFlags :: [PackageFlag],
479 -- ^ The @-package@ and @-hide-package@ flags from the command-line
482 -- NB. do not modify this field, it is calculated by
483 -- Packages.initPackages and Packages.updatePackages.
484 pkgDatabase :: Maybe [PackageConfig],
485 pkgState :: PackageState,
488 -- These have to be IORefs, because the defaultCleanupHandler needs to
489 -- know what to clean when an exception happens
490 filesToClean :: IORef [FilePath],
491 dirsToClean :: IORef (FiniteMap FilePath FilePath),
495 language :: Maybe Language,
496 extensionFlags :: Either [OnOff ExtensionFlag]
499 -- | Message output action: use "ErrUtils" instead of this if you can
500 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
502 haddockOptions :: Maybe String
505 wayNames :: DynFlags -> [WayName]
506 wayNames = map wayName . ways
508 -- | The target code type of the compilation (if any).
510 -- Whenever you change the target, also make sure to set 'ghcLink' to
511 -- something sensible.
513 -- 'HscNothing' can be used to avoid generating any output, however, note
516 -- * This will not run the desugaring step, thus no warnings generated in
517 -- this step will be output. In particular, this includes warnings related
518 -- to pattern matching. You can run the desugarer manually using
519 -- 'GHC.desugarModule'.
521 -- * If a program uses Template Haskell the typechecker may try to run code
522 -- from an imported module. This will fail if no code has been generated
523 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
524 -- whether this might be the case and choose to either switch to a
525 -- different target or avoid typechecking such modules. (The latter may
526 -- preferable for security reasons.)
529 = HscC -- ^ Generate C code.
530 | HscAsm -- ^ Generate assembly using the native code generator.
531 | HscLlvm -- ^ Generate assembly using the llvm code generator.
532 | HscJava -- ^ Generate Java bytecode.
533 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
534 | HscNothing -- ^ Don't generate any code. See notes above.
537 -- | Will this target result in an object file on the disk?
538 isObjectTarget :: HscTarget -> Bool
539 isObjectTarget HscC = True
540 isObjectTarget HscAsm = True
541 isObjectTarget HscLlvm = True
542 isObjectTarget _ = False
544 -- | The 'GhcMode' tells us whether we're doing multi-module
545 -- compilation (controlled via the "GHC" API) or one-shot
546 -- (single-module) compilation. This makes a difference primarily to
547 -- the "Finder": in one-shot mode we look for interface files for
548 -- imported modules, but in multi-module mode we look for source files
549 -- in order to check whether they need to be recompiled.
551 = CompManager -- ^ @\-\-make@, GHCi, etc.
552 | OneShot -- ^ @ghc -c Foo.hs@
553 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
556 instance Outputable GhcMode where
557 ppr CompManager = ptext (sLit "CompManager")
558 ppr OneShot = ptext (sLit "OneShot")
559 ppr MkDepend = ptext (sLit "MkDepend")
561 isOneShot :: GhcMode -> Bool
562 isOneShot OneShot = True
563 isOneShot _other = False
565 -- | What to do in the link step, if there is one.
567 = NoLink -- ^ Don't link at all
568 | LinkBinary -- ^ Link object code into a binary
569 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
570 -- bytecode and object code).
571 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
574 isNoLink :: GhcLink -> Bool
575 isNoLink NoLink = True
578 -- Is it worth evaluating this Bool and caching it in the DynFlags value
579 -- during initDynFlags?
580 doingTickyProfiling :: DynFlags -> Bool
581 doingTickyProfiling _ = opt_Ticky
582 -- XXX -ticky is a static flag, because it implies -debug which is also
583 -- static. If the way flags were made dynamic, we could fix this.
586 = ExposePackage String
587 | ExposePackageId String
589 | IgnorePackage String
592 defaultHscTarget :: HscTarget
593 defaultHscTarget = defaultObjectTarget
595 -- | The 'HscTarget' value corresponding to the default way to create
596 -- object files on the current platform.
597 defaultObjectTarget :: HscTarget
599 | cGhcWithNativeCodeGen == "YES" = HscAsm
607 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
609 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
610 initDynFlags :: DynFlags -> IO DynFlags
611 initDynFlags dflags = do
612 -- someday these will be dynamic flags
613 ways <- readIORef v_Ways
614 refFilesToClean <- newIORef []
615 refDirsToClean <- newIORef emptyFM
618 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
619 rtsBuildTag = mkBuildTag ways,
620 filesToClean = refFilesToClean,
621 dirsToClean = refDirsToClean
624 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
625 -- and must be fully initialized by 'GHC.newSession' first.
626 defaultDynFlags :: DynFlags
629 ghcMode = CompManager,
630 ghcLink = LinkBinary,
631 hscTarget = defaultHscTarget,
637 maxSimplIterations = 4,
638 shouldDumpSimplPhase = Nothing,
640 specConstrThreshold = Just 200,
641 specConstrCount = Just 3,
642 liberateCaseThreshold = Just 200,
643 strictnessBefore = [],
645 #ifndef OMIT_NATIVE_CODEGEN
646 targetPlatform = defaultTargetPlatform,
649 cmdlineHcIncludes = [],
653 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
657 thisPackage = mainPackageId,
660 dylibInstallName = Nothing,
664 objectSuf = phaseInputExt StopLn,
665 hcSuf = phaseInputExt HCc,
668 outputFile = Nothing,
670 dynLibLoader = SystemDependent,
671 dumpPrefix = Nothing,
672 dumpPrefixForce = Nothing,
676 cmdlineFrameworks = [],
677 tmpDir = cDEFAULT_TMPDIR,
679 rtsOptsEnabled = RtsOptsSafeOnly,
685 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
698 pkgDatabase = Nothing,
699 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
700 ways = panic "defaultDynFlags: No ways",
701 buildTag = panic "defaultDynFlags: No buildTag",
702 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
704 -- initSysTools fills all these in
705 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
706 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
707 topDir = panic "defaultDynFlags: No topDir",
708 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
709 pgm_L = panic "defaultDynFlags: No pgm_L",
710 pgm_P = panic "defaultDynFlags: No pgm_P",
711 pgm_F = panic "defaultDynFlags: No pgm_F",
712 pgm_c = panic "defaultDynFlags: No pgm_c",
713 pgm_m = panic "defaultDynFlags: No pgm_m",
714 pgm_s = panic "defaultDynFlags: No pgm_s",
715 pgm_a = panic "defaultDynFlags: No pgm_a",
716 pgm_l = panic "defaultDynFlags: No pgm_l",
717 pgm_dll = panic "defaultDynFlags: No pgm_dll",
718 pgm_T = panic "defaultDynFlags: No pgm_T",
719 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
720 pgm_windres = panic "defaultDynFlags: No pgm_windres",
721 pgm_lo = panic "defaultDynFlags: No pgm_lo",
722 pgm_lc = panic "defaultDynFlags: No pgm_lc",
723 -- end of initSysTools values
725 depMakefile = "Makefile",
726 depIncludePkgDeps = False,
729 -- end of ghc -M values
730 filesToClean = panic "defaultDynFlags: No filesToClean",
731 dirsToClean = panic "defaultDynFlags: No dirsToClean",
732 haddockOptions = Nothing,
734 Opt_AutoLinkPackages,
735 Opt_ReadUserPackageConf,
745 Opt_PrintBindContents
747 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
748 -- The default -O0 options
752 extensionFlags = Left [],
754 log_action = \severity srcSpan style msg ->
756 SevOutput -> printOutput (msg style)
757 SevInfo -> printErrs (msg style)
758 SevFatal -> printErrs (msg style)
761 printErrs ((mkLocMessage srcSpan msg) style)
762 -- careful (#2302): printErrs prints in UTF-8, whereas
763 -- converting to string first and using hPutStr would
764 -- just emit the low 8 bits of each unicode char.
768 Note [Verbosity levels]
769 ~~~~~~~~~~~~~~~~~~~~~~~
770 0 | print errors & warnings only
771 1 | minimal verbosity: print "compiling M ... done." for each module.
772 2 | equivalent to -dshow-passes
773 3 | equivalent to existing "ghc -v"
774 4 | "ghc -v -ddump-most"
775 5 | "ghc -v -ddump-all"
781 flattenExtensionFlags :: DynFlags -> DynFlags
782 flattenExtensionFlags dflags
783 = case extensionFlags dflags of
786 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
789 panic "Flattening already-flattened extension flags"
791 ensureFlattenedExtensionFlags :: DynFlags -> DynFlags
792 ensureFlattenedExtensionFlags dflags
793 = case extensionFlags dflags of
796 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
801 -- OnOffs accumulate in reverse order, so we use foldr in order to
802 -- process them in the right order
803 flattenExtensionFlags' :: Maybe Language -> [OnOff ExtensionFlag]
805 flattenExtensionFlags' ml = foldr f defaultExtensionFlags
806 where f (On f) flags = f : delete f flags
807 f (Off f) flags = delete f flags
808 defaultExtensionFlags = languageExtensions ml
810 languageExtensions :: Maybe Language -> [ExtensionFlag]
811 languageExtensions Nothing
812 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
813 -- behaviour the default, to see if anyone notices
815 : languageExtensions (Just Haskell2010)
816 languageExtensions (Just Haskell98)
817 = [Opt_ImplicitPrelude,
818 Opt_MonomorphismRestriction,
820 Opt_DatatypeContexts]
821 languageExtensions (Just Haskell2010)
822 = [Opt_ImplicitPrelude,
823 Opt_MonomorphismRestriction,
824 Opt_DatatypeContexts,
826 Opt_ForeignFunctionInterface,
831 -- The DOpt class is a temporary workaround, to avoid having to do
832 -- a mass-renaming dopt->lopt at the moment
834 dopt :: a -> DynFlags -> Bool
835 dopt_set :: DynFlags -> a -> DynFlags
836 dopt_unset :: DynFlags -> a -> DynFlags
838 instance DOpt DynFlag where
841 dopt_unset = dopt_unset'
843 instance DOpt ExtensionFlag where
846 dopt_unset = lopt_unset
848 -- | Test whether a 'DynFlag' is set
849 dopt' :: DynFlag -> DynFlags -> Bool
850 dopt' f dflags = f `elem` (flags dflags)
853 dopt_set' :: DynFlags -> DynFlag -> DynFlags
854 dopt_set' dfs f = dfs{ flags = f : flags dfs }
856 -- | Unset a 'DynFlag'
857 dopt_unset' :: DynFlags -> DynFlag -> DynFlags
858 dopt_unset' dfs f = dfs{ flags = filter (/= f) (flags dfs) }
860 -- | Test whether a 'ExtensionFlag' is set
861 lopt :: ExtensionFlag -> DynFlags -> Bool
862 lopt f dflags = case extensionFlags dflags of
863 Left _ -> panic ("Testing for extension flag " ++ show f ++ " before flattening")
864 Right flags -> f `elem` flags
866 -- | Set a 'ExtensionFlag'
867 lopt_set :: DynFlags -> ExtensionFlag -> DynFlags
868 lopt_set dfs f = case extensionFlags dfs of
869 Left onoffs -> dfs { extensionFlags = Left (On f : onoffs) }
870 Right _ -> panic ("Setting extension flag " ++ show f ++ " after flattening")
872 -- | Set a 'ExtensionFlag'
873 lopt_set_flattened :: DynFlags -> ExtensionFlag -> DynFlags
874 lopt_set_flattened dfs f = case extensionFlags dfs of
876 panic ("Setting extension flag " ++ show f ++ " before flattening, but expected flattened")
878 dfs { extensionFlags = Right (f : delete f flags) }
880 -- | Unset a 'ExtensionFlag'
881 lopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
882 lopt_unset dfs f = case extensionFlags dfs of
883 Left onoffs -> dfs { extensionFlags = Left (Off f : onoffs) }
884 Right _ -> panic ("Unsetting extension flag " ++ show f ++ " after flattening")
886 -- | Unset a 'ExtensionFlag'
887 lopt_unset_flattened :: DynFlags -> ExtensionFlag -> DynFlags
888 lopt_unset_flattened dfs f = case extensionFlags dfs of
890 panic ("Unsetting extension flag " ++ show f ++ " before flattening, but expected flattened")
892 dfs { extensionFlags = Right (delete f flags) }
894 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
895 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
896 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
897 -> [a] -- ^ Correctly ordered extracted options
898 getOpts dflags opts = reverse (opts dflags)
899 -- We add to the options from the front, so we need to reverse the list
901 -- | Gets the verbosity flag for the current verbosity level. This is fed to
902 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
903 getVerbFlag :: DynFlags -> String
905 | verbosity dflags >= 3 = "-v"
908 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
909 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
910 setPgmP, addOptl, addOptP,
911 addCmdlineFramework, addHaddockOpts
912 :: String -> DynFlags -> DynFlags
913 setOutputFile, setOutputHi, setDumpPrefixForce
914 :: Maybe String -> DynFlags -> DynFlags
916 setObjectDir f d = d{ objectDir = Just f}
917 setHiDir f d = d{ hiDir = Just f}
918 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
919 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
920 -- \#included from the .hc file when compiling with -fvia-C.
921 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
922 setDylibInstallName f d = d{ dylibInstallName = Just f}
924 setObjectSuf f d = d{ objectSuf = f}
925 setHiSuf f d = d{ hiSuf = f}
926 setHcSuf f d = d{ hcSuf = f}
928 setOutputFile f d = d{ outputFile = f}
929 setOutputHi f d = d{ outputHi = f}
931 parseDynLibLoaderMode f d =
933 ("deploy", "") -> d{ dynLibLoader = Deployable }
934 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
935 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
937 setDumpPrefixForce f d = d { dumpPrefixForce = f}
939 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
940 -- Config.hs should really use Option.
941 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
942 addOptl f d = d{ opt_l = f : opt_l d}
943 addOptP f d = d{ opt_P = f : opt_P d}
946 setDepMakefile :: FilePath -> DynFlags -> DynFlags
947 setDepMakefile f d = d { depMakefile = deOptDep f }
949 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
950 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
952 addDepExcludeMod :: String -> DynFlags -> DynFlags
954 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
956 addDepSuffix :: FilePath -> DynFlags -> DynFlags
957 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
960 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
961 -- we need to strip the "-optdep" off of the arg
962 deOptDep :: String -> String
963 deOptDep x = case stripPrefix "-optdep" x of
967 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
969 addHaddockOpts f d = d{ haddockOptions = Just f}
971 -- -----------------------------------------------------------------------------
972 -- Command-line options
974 -- | When invoking external tools as part of the compilation pipeline, we
975 -- pass these a sequence of options on the command-line. Rather than
976 -- just using a list of Strings, we use a type that allows us to distinguish
977 -- between filepaths and 'other stuff'. The reason for this is that
978 -- this type gives us a handle on transforming filenames, and filenames only,
979 -- to whatever format they're expected to be on a particular platform.
981 = FileOption -- an entry that _contains_ filename(s) / filepaths.
982 String -- a non-filepath prefix that shouldn't be
983 -- transformed (e.g., "/out=")
984 String -- the filepath/filename portion
987 showOpt :: Option -> String
988 showOpt (FileOption pre f) = pre ++ f
989 showOpt (Option s) = s
991 -----------------------------------------------------------------------------
992 -- Setting the optimisation level
994 updOptLevel :: Int -> DynFlags -> DynFlags
995 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
997 = dfs2{ optLevel = final_n }
999 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
1000 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
1001 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
1003 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
1004 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
1006 optLevelFlags :: [([Int], DynFlag)]
1008 = [ ([0], Opt_IgnoreInterfacePragmas)
1009 , ([0], Opt_OmitInterfacePragmas)
1011 , ([1,2], Opt_IgnoreAsserts)
1012 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1014 , ([1,2], Opt_DoEtaReduction)
1015 , ([1,2], Opt_CaseMerge)
1016 , ([1,2], Opt_Strictness)
1018 , ([1,2], Opt_FullLaziness)
1019 , ([1,2], Opt_Specialise)
1020 , ([1,2], Opt_FloatIn)
1022 , ([2], Opt_LiberateCase)
1023 , ([2], Opt_SpecConstr)
1024 , ([2], Opt_RegsGraph)
1026 -- , ([2], Opt_StaticArgumentTransformation)
1027 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1028 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1029 -- several improvements to the heuristics, and I'm concerned that without
1030 -- those changes SAT will interfere with some attempts to write "high
1031 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1032 -- this year. In particular, the version in HEAD lacks the tail call
1033 -- criterion, so many things that look like reasonable loops will be
1034 -- turned into functions with extra (unneccesary) thunk creation.
1036 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1037 -- This one is important for a tiresome reason:
1038 -- we want to make sure that the bindings for data
1039 -- constructors are eta-expanded. This is probably
1040 -- a good thing anyway, but it seems fragile.
1043 -- -----------------------------------------------------------------------------
1044 -- Standard sets of warning options
1046 standardWarnings :: [DynFlag]
1048 = [ Opt_WarnWarningsDeprecations,
1049 Opt_WarnDeprecatedFlags,
1050 Opt_WarnUnrecognisedPragmas,
1051 Opt_WarnOverlappingPatterns,
1052 Opt_WarnMissingFields,
1053 Opt_WarnMissingMethods,
1054 Opt_WarnDuplicateExports,
1055 Opt_WarnLazyUnliftedBindings,
1056 Opt_WarnDodgyForeignImports,
1057 Opt_WarnWrongDoBind,
1058 Opt_WarnAlternativeLayoutRuleTransitional
1061 minusWOpts :: [DynFlag]
1063 = standardWarnings ++
1064 [ Opt_WarnUnusedBinds,
1065 Opt_WarnUnusedMatches,
1066 Opt_WarnUnusedImports,
1067 Opt_WarnIncompletePatterns,
1068 Opt_WarnDodgyExports,
1069 Opt_WarnDodgyImports
1072 minusWallOpts :: [DynFlag]
1075 [ Opt_WarnTypeDefaults,
1076 Opt_WarnNameShadowing,
1077 Opt_WarnMissingSigs,
1080 Opt_WarnUnusedDoBind
1083 -- minuswRemovesOpts should be every warning option
1084 minuswRemovesOpts :: [DynFlag]
1087 [Opt_WarnImplicitPrelude,
1088 Opt_WarnIncompletePatternsRecUpd,
1089 Opt_WarnSimplePatterns,
1090 Opt_WarnMonomorphism,
1091 Opt_WarnUnrecognisedPragmas,
1095 -- -----------------------------------------------------------------------------
1096 -- StgToDo: abstraction of stg-to-stg passes to run.
1099 = StgDoMassageForProfiling -- should be (next to) last
1100 -- There's also setStgVarInfo, but its absolute "lastness"
1101 -- is so critical that it is hardwired in (no flag).
1104 getStgToDo :: DynFlags -> [StgToDo]
1108 stg_stats = dopt Opt_StgStats dflags
1110 todo1 = if stg_stats then [D_stg_stats] else []
1112 todo2 | WayProf `elem` wayNames dflags
1113 = StgDoMassageForProfiling : todo1
1117 {- **********************************************************************
1121 %********************************************************************* -}
1123 -- -----------------------------------------------------------------------------
1124 -- Parsing the dynamic flags.
1126 -- | Parse dynamic flags from a list of command line arguments. Returns the
1127 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1128 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1129 -- flags or missing arguments).
1130 parseDynamicFlags :: Monad m =>
1131 DynFlags -> [Located String]
1132 -> m (DynFlags, [Located String], [Located String])
1133 -- ^ Updated 'DynFlags', left-over arguments, and
1134 -- list of warnings.
1135 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1137 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1138 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1139 parseDynamicNoPackageFlags :: Monad m =>
1140 DynFlags -> [Located String]
1141 -> m (DynFlags, [Located String], [Located String])
1142 -- ^ Updated 'DynFlags', left-over arguments, and
1143 -- list of warnings.
1144 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1146 parseDynamicFlags_ :: Monad m =>
1147 DynFlags -> [Located String] -> Bool
1148 -> m (DynFlags, [Located String], [Located String])
1149 parseDynamicFlags_ dflags0 args pkg_flags = do
1150 -- XXX Legacy support code
1151 -- We used to accept things like
1152 -- optdep-f -optdepdepend
1153 -- optdep-f -optdep depend
1154 -- optdep -f -optdepdepend
1155 -- optdep -f -optdep depend
1156 -- but the spaces trip up proper argument handling. So get rid of them.
1157 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1158 f (x : xs) = x : f xs
1162 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1163 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1164 | otherwise = dynamic_flags
1166 let ((leftover, errs, warns), dflags1)
1167 = runCmdLine (processArgs flag_spec args') dflags0
1168 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1170 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1171 -- isn't up to the job. We know that if hscTarget == HscC, then the
1172 -- user has explicitly used -fvia-C, because -fasm is the default,
1173 -- unless there is no NCG on this platform. The latter case is
1174 -- checked when the -fPIC flag is parsed.
1176 let (pic_warns, dflags2)
1177 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1178 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1179 dflags1{ hscTarget = HscAsm })
1180 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1181 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1182 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1183 ++ "dynamic on this platform;\n ignoring -fllvm"],
1184 dflags1{ hscTarget = HscAsm })
1186 | otherwise = ([], dflags1)
1188 return (dflags2, leftover, pic_warns ++ warns)
1191 {- **********************************************************************
1193 DynFlags specifications
1195 %********************************************************************* -}
1197 allFlags :: [String]
1198 allFlags = map ('-':) $
1199 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1200 map ("fno-"++) flags ++
1201 map ("f"++) flags ++
1202 map ("f"++) flags' ++
1203 map ("X"++) supportedExtensions
1204 where ok (PrefixPred _ _) = False
1206 flags = [ name | (name, _, _) <- fFlags ]
1207 flags' = [ name | (name, _, _) <- fLangFlags ]
1209 --------------- The main flags themselves ------------------
1210 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1212 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1213 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1214 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1216 (HasArg (\s -> do { addCmdlineHCInclude s
1217 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1218 , Flag "v" (OptIntSuffix setVerbosity)
1220 ------- Specific phases --------------------------------------------
1221 -- need to appear before -pgmL to be parsed as LLVM flags.
1222 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1223 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1224 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1225 , Flag "pgmP" (hasArg setPgmP)
1226 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1227 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1228 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1229 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1230 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1231 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1232 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1233 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1235 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1236 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1237 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1238 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1239 , Flag "optP" (hasArg addOptP)
1240 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1241 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1242 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1243 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1244 , Flag "optl" (hasArg addOptl)
1245 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1248 (NoArg (if can_split
1249 then setDynFlag Opt_SplitObjs
1250 else addWarn "ignoring -fsplit-objs"))
1252 -------- ghc -M -----------------------------------------------------
1253 , Flag "dep-suffix" (hasArg addDepSuffix)
1254 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1255 , Flag "dep-makefile" (hasArg setDepMakefile)
1256 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1257 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1258 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1259 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1260 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1261 , Flag "exclude-module" (hasArg addDepExcludeMod)
1262 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1263 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1265 -------- Linking ----------------------------------------------------
1266 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1267 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1268 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1269 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1271 ------- Libraries ---------------------------------------------------
1272 , Flag "L" (Prefix addLibraryPath)
1273 , Flag "l" (AnySuffix (upd . addOptl))
1275 ------- Frameworks --------------------------------------------------
1276 -- -framework-path should really be -F ...
1277 , Flag "framework-path" (HasArg addFrameworkPath)
1278 , Flag "framework" (hasArg addCmdlineFramework)
1280 ------- Output Redirection ------------------------------------------
1281 , Flag "odir" (hasArg setObjectDir)
1282 , Flag "o" (SepArg (upd . setOutputFile . Just))
1283 , Flag "ohi" (hasArg (setOutputHi . Just ))
1284 , Flag "osuf" (hasArg setObjectSuf)
1285 , Flag "hcsuf" (hasArg setHcSuf)
1286 , Flag "hisuf" (hasArg setHiSuf)
1287 , Flag "hidir" (hasArg setHiDir)
1288 , Flag "tmpdir" (hasArg setTmpDir)
1289 , Flag "stubdir" (hasArg setStubDir)
1290 , Flag "outputdir" (hasArg setOutputDir)
1291 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1293 ------- Keeping temporary files -------------------------------------
1294 -- These can be singular (think ghc -c) or plural (think ghc --make)
1295 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1296 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1297 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1298 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1299 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1300 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1301 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1302 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1303 -- This only makes sense as plural
1304 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1306 ------- Miscellaneous ----------------------------------------------
1307 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1308 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1309 , Flag "with-rtsopts" (HasArg setRtsOpts)
1310 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1311 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1312 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1313 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1314 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1315 , Flag "main-is" (SepArg setMainIs)
1316 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1317 , Flag "haddock-opts" (hasArg addHaddockOpts)
1318 , Flag "hpcdir" (SepArg setOptHpcDir)
1320 ------- recompilation checker --------------------------------------
1321 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1322 ; deprecate "Use -fno-force-recomp instead" }))
1323 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1324 ; deprecate "Use -fforce-recomp instead" }))
1326 ------ HsCpp opts ---------------------------------------------------
1327 , Flag "D" (AnySuffix (upd . addOptP))
1328 , Flag "U" (AnySuffix (upd . addOptP))
1330 ------- Include/Import Paths ----------------------------------------
1331 , Flag "I" (Prefix addIncludePath)
1332 , Flag "i" (OptPrefix addImportPath)
1334 ------ Debugging ----------------------------------------------------
1335 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1337 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1338 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1339 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1340 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1341 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1342 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1343 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1344 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1345 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1346 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1347 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1348 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1349 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1350 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1351 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1352 ; setDumpFlag' Opt_D_dump_llvm}))
1353 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1354 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1355 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1356 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1357 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1358 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1359 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1360 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1361 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1362 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1363 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1364 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1365 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1366 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1367 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1368 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1369 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1370 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1371 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1372 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1373 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1374 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1375 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1376 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1377 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1378 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1379 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1380 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1381 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1382 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1383 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1384 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1385 ; setVerboseCore2Core }))
1386 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1387 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1388 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1389 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1390 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1391 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1392 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1393 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1394 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1395 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1396 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1397 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1398 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1399 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1400 , Flag "dshow-passes" (NoArg (do forceRecompile
1401 setVerbosity (Just 2)))
1402 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1404 ------ Machine dependant (-m<blah>) stuff ---------------------------
1406 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1407 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1408 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1409 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1411 ------ Warning opts -------------------------------------------------
1412 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1413 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1414 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1415 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1416 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1417 ; deprecate "Use -w instead" }))
1418 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1420 ------ Optimisation flags ------------------------------------------
1421 , Flag "O" (noArg (setOptLevel 1))
1422 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1423 , Flag "Odph" (noArg setDPHOpt)
1424 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1425 -- If the number is missing, use 1
1427 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1428 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1429 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1430 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1431 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1432 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1433 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1434 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1435 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1436 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1437 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1439 ------ Profiling ----------------------------------------------------
1441 -- XXX Should the -f* flags be deprecated?
1442 -- They don't seem to be documented
1443 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1444 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1445 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1446 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1447 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1448 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1449 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1450 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1451 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1453 ------ DPH flags ----------------------------------------------------
1455 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1456 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1457 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1459 ------ Compiler flags -----------------------------------------------
1461 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1462 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1463 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1464 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1465 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1466 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1468 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1469 setTarget HscNothing))
1470 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1471 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1472 , Flag "fglasgow-exts" (NoArg enableGlasgowExts)
1473 , Flag "fno-glasgow-exts" (NoArg disableGlasgowExts)
1475 ++ map (mkFlag True "f" setDynFlag ) fFlags
1476 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1477 ++ map (mkFlag True "f" setExtensionFlag ) fLangFlags
1478 ++ map (mkFlag False "fno-" unSetExtensionFlag) fLangFlags
1479 ++ map (mkFlag True "X" setExtensionFlag ) xFlags
1480 ++ map (mkFlag False "XNo" unSetExtensionFlag) xFlags
1481 ++ map (mkFlag True "X" setLanguage) languageFlags
1483 package_flags :: [Flag (CmdLineP DynFlags)]
1485 ------- Packages ----------------------------------------------------
1486 Flag "package-conf" (HasArg extraPkgConf_)
1487 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1488 , Flag "package-name" (hasArg setPackageName)
1489 , Flag "package-id" (HasArg exposePackageId)
1490 , Flag "package" (HasArg exposePackage)
1491 , Flag "hide-package" (HasArg hidePackage)
1492 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1493 , Flag "ignore-package" (HasArg ignorePackage)
1494 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1495 ; deprecate "Use -package instead" }))
1499 = ( String -- Flag in string form
1500 , flag -- Flag in internal form
1501 , Bool -> DynP ()) -- Extra action to run when the flag is found
1502 -- Typically, emit a warning or error
1503 -- True <=> we are turning the flag on
1504 -- False <=> we are turning the flag on
1507 mkFlag :: Bool -- ^ True <=> it should be turned on
1508 -> String -- ^ The flag prefix
1509 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1510 -> FlagSpec flag -- ^ Specification of this particular flag
1511 -> Flag (CmdLineP DynFlags)
1512 mkFlag turnOn flagPrefix f (name, flag, extra_action)
1513 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turnOn))
1515 deprecatedForExtension :: String -> Bool -> DynP ()
1516 deprecatedForExtension lang turn_on
1517 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1519 flag | turn_on = lang
1520 | otherwise = "No"++lang
1522 useInstead :: String -> Bool -> DynP ()
1523 useInstead flag turn_on
1524 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1526 no = if turn_on then "" else "no-"
1528 nop :: Bool -> DynP ()
1531 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1532 fFlags :: [FlagSpec DynFlag]
1534 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1535 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1536 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1537 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1538 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1539 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1540 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1541 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1542 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1543 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1544 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1545 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1546 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1547 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1548 ( "warn-simple-patterns", Opt_WarnSimplePatterns, nop ),
1549 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1550 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1551 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1552 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1553 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1554 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1555 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1556 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1557 ( "warn-orphans", Opt_WarnOrphans, nop ),
1558 ( "warn-tabs", Opt_WarnTabs, nop ),
1559 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1560 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings,
1561 \_ -> deprecate "lazy unlifted bindings will be an error in GHC 6.14, and this flag will no longer exist"),
1562 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1563 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1564 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1565 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1566 ( "strictness", Opt_Strictness, nop ),
1567 ( "specialise", Opt_Specialise, nop ),
1568 ( "float-in", Opt_FloatIn, nop ),
1569 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1570 ( "full-laziness", Opt_FullLaziness, nop ),
1571 ( "liberate-case", Opt_LiberateCase, nop ),
1572 ( "spec-constr", Opt_SpecConstr, nop ),
1573 ( "cse", Opt_CSE, nop ),
1574 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1575 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1576 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1577 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1578 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1579 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1580 ( "case-merge", Opt_CaseMerge, nop ),
1581 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1582 ( "method-sharing", Opt_MethodSharing, nop ),
1583 ( "dicts-cheap", Opt_DictsCheap, nop ),
1584 ( "excess-precision", Opt_ExcessPrecision, nop ),
1585 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1586 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1587 ( "print-bind-result", Opt_PrintBindResult, nop ),
1588 ( "force-recomp", Opt_ForceRecomp, nop ),
1589 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1590 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1591 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1592 ( "break-on-exception", Opt_BreakOnException, nop ),
1593 ( "break-on-error", Opt_BreakOnError, nop ),
1594 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1595 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1596 ( "run-cps", Opt_RunCPS, nop ),
1597 ( "run-cpsz", Opt_RunCPSZ, nop ),
1598 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1599 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1600 ( "vectorise", Opt_Vectorise, nop ),
1601 ( "regs-graph", Opt_RegsGraph, nop ),
1602 ( "regs-iterative", Opt_RegsIterative, nop ),
1603 ( "gen-manifest", Opt_GenManifest, nop ),
1604 ( "embed-manifest", Opt_EmbedManifest, nop ),
1605 ( "ext-core", Opt_EmitExternalCore, nop ),
1606 ( "shared-implib", Opt_SharedImplib, nop ),
1607 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1608 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1611 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1612 fLangFlags :: [FlagSpec ExtensionFlag]
1614 ( "th", Opt_TemplateHaskell,
1615 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1616 ( "fi", Opt_ForeignFunctionInterface,
1617 deprecatedForExtension "ForeignFunctionInterface" ),
1618 ( "ffi", Opt_ForeignFunctionInterface,
1619 deprecatedForExtension "ForeignFunctionInterface" ),
1620 ( "arrows", Opt_Arrows,
1621 deprecatedForExtension "Arrows" ),
1622 ( "generics", Opt_Generics,
1623 deprecatedForExtension "Generics" ),
1624 ( "implicit-prelude", Opt_ImplicitPrelude,
1625 deprecatedForExtension "ImplicitPrelude" ),
1626 ( "bang-patterns", Opt_BangPatterns,
1627 deprecatedForExtension "BangPatterns" ),
1628 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1629 deprecatedForExtension "MonomorphismRestriction" ),
1630 ( "mono-pat-binds", Opt_MonoPatBinds,
1631 deprecatedForExtension "MonoPatBinds" ),
1632 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1633 deprecatedForExtension "ExtendedDefaultRules" ),
1634 ( "implicit-params", Opt_ImplicitParams,
1635 deprecatedForExtension "ImplicitParams" ),
1636 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1637 deprecatedForExtension "ScopedTypeVariables" ),
1639 deprecatedForExtension "PArr" ),
1640 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1641 deprecatedForExtension "OverlappingInstances" ),
1642 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1643 deprecatedForExtension "UndecidableInstances" ),
1644 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1645 deprecatedForExtension "IncoherentInstances" )
1648 supportedLanguages :: [String]
1649 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1651 supportedExtensions :: [String]
1652 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1654 supportedLanguagesAndExtensions :: [String]
1655 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1657 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1658 languageFlags :: [FlagSpec Language]
1660 ( "Haskell98", Haskell98, nop ),
1661 ( "Haskell2010", Haskell2010, nop )
1664 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1665 xFlags :: [FlagSpec ExtensionFlag]
1667 ( "CPP", Opt_Cpp, nop ),
1668 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1669 ( "TupleSections", Opt_TupleSections, nop ),
1670 ( "PatternGuards", Opt_PatternGuards, nop ),
1671 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1672 ( "MagicHash", Opt_MagicHash, nop ),
1673 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1674 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1675 ( "KindSignatures", Opt_KindSignatures, nop ),
1676 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1677 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1678 ( "TransformListComp", Opt_TransformListComp, nop ),
1679 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1680 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1681 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1682 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1683 ( "Rank2Types", Opt_Rank2Types, nop ),
1684 ( "RankNTypes", Opt_RankNTypes, nop ),
1685 ( "ImpredicativeTypes", Opt_ImpredicativeTypes,
1686 \_ -> deprecate "impredicative polymorphism will be simplified or removed in GHC 6.14" ),
1687 ( "TypeOperators", Opt_TypeOperators, nop ),
1688 ( "RecursiveDo", Opt_RecursiveDo,
1689 deprecatedForExtension "DoRec"),
1690 ( "DoRec", Opt_DoRec, nop ),
1691 ( "Arrows", Opt_Arrows, nop ),
1692 ( "PArr", Opt_PArr, nop ),
1693 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1694 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1695 ( "Generics", Opt_Generics, nop ),
1696 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1697 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1698 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1699 ( "RecordPuns", Opt_RecordPuns,
1700 deprecatedForExtension "NamedFieldPuns" ),
1701 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1702 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1703 ( "GADTs", Opt_GADTs, nop ),
1704 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1705 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1706 ( "BangPatterns", Opt_BangPatterns, nop ),
1707 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1708 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1709 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1710 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1711 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1712 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1713 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1714 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1715 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1716 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, nop ),
1717 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1718 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1719 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1721 ( "PatternSignatures", Opt_ScopedTypeVariables,
1722 deprecatedForExtension "ScopedTypeVariables" ),
1724 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1725 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1726 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1727 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1728 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1729 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1730 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1731 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1732 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1733 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1734 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1735 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1736 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1737 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1738 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1739 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1740 ( "PackageImports", Opt_PackageImports, nop ),
1741 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1742 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1745 impliedFlags :: [(ExtensionFlag, ExtensionFlag)]
1747 = [ (Opt_RankNTypes, Opt_ExplicitForAll)
1748 , (Opt_Rank2Types, Opt_ExplicitForAll)
1749 , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
1750 , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
1751 , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
1752 , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
1754 , (Opt_GADTs, Opt_RelaxedPolyRec) -- We want type-sig variables to
1755 -- be completely rigid for GADTs
1757 , (Opt_TypeFamilies, Opt_RelaxedPolyRec) -- Trac #2944 gives a nice example
1758 , (Opt_TypeFamilies, Opt_KindSignatures) -- Type families use kind signatures
1759 -- all over the place
1761 , (Opt_ScopedTypeVariables, Opt_RelaxedPolyRec) -- Ditto for scoped type variables; see
1762 -- Note [Scoped tyvars] in TcBinds
1763 , (Opt_ImpredicativeTypes, Opt_RankNTypes)
1765 -- Record wild-cards implies field disambiguation
1766 -- Otherwise if you write (C {..}) you may well get
1767 -- stuff like " 'a' not in scope ", which is a bit silly
1768 -- if the compiler has just filled in field 'a' of constructor 'C'
1769 , (Opt_RecordWildCards, Opt_DisambiguateRecordFields)
1772 enableGlasgowExts :: DynP ()
1773 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1774 mapM_ setExtensionFlag glasgowExtsFlags
1776 disableGlasgowExts :: DynP ()
1777 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1778 mapM_ unSetExtensionFlag glasgowExtsFlags
1780 glasgowExtsFlags :: [ExtensionFlag]
1781 glasgowExtsFlags = [
1782 Opt_ForeignFunctionInterface
1783 , Opt_UnliftedFFITypes
1785 , Opt_ImplicitParams
1786 , Opt_ScopedTypeVariables
1788 , Opt_TypeSynonymInstances
1789 , Opt_StandaloneDeriving
1790 , Opt_DeriveDataTypeable
1792 , Opt_DeriveFoldable
1793 , Opt_DeriveTraversable
1794 , Opt_FlexibleContexts
1795 , Opt_FlexibleInstances
1796 , Opt_ConstrainedClassMethods
1797 , Opt_MultiParamTypeClasses
1798 , Opt_FunctionalDependencies
1800 , Opt_PolymorphicComponents
1801 , Opt_ExistentialQuantification
1803 , Opt_PostfixOperators
1805 , Opt_LiberalTypeSynonyms
1809 , Opt_ParallelListComp
1810 , Opt_EmptyDataDecls
1811 , Opt_KindSignatures
1812 , Opt_GeneralizedNewtypeDeriving
1813 , Opt_TypeFamilies ]
1816 -- Consult the RTS to find whether GHC itself has been built profiled
1817 -- If so, you can't use Template Haskell
1818 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1820 rtsIsProfiled :: Bool
1821 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1823 checkTemplateHaskellOk :: Bool -> DynP ()
1824 checkTemplateHaskellOk turn_on
1825 | turn_on && rtsIsProfiled
1826 = addErr "You can't use Template Haskell with a profiled compiler"
1830 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1831 -- so we simply say "ok". It doesn't matter because TH isn't
1832 -- available in stage 1 anyway.
1833 checkTemplateHaskellOk turn_on = return ()
1836 {- **********************************************************************
1838 DynFlags constructors
1840 %********************************************************************* -}
1842 type DynP = EwM (CmdLineP DynFlags)
1844 upd :: (DynFlags -> DynFlags) -> DynP ()
1845 upd f = liftEwM (do { dfs <- getCmdLineState
1846 ; putCmdLineState $! (f dfs) })
1848 --------------- Constructor functions for OptKind -----------------
1849 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1850 noArg fn = NoArg (upd fn)
1852 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1853 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1855 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1856 hasArg fn = HasArg (upd . fn)
1858 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1859 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1860 ; deprecate deprec })
1862 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1863 intSuffix fn = IntSuffix (\n -> upd (fn n))
1865 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1866 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1868 --------------------------
1869 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1870 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1871 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1873 --------------------------
1874 setLanguage :: Language -> DynP ()
1875 setLanguage l = upd (\dfs -> dfs { language = Just l })
1877 --------------------------
1878 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1879 setExtensionFlag f = do { upd (\dfs -> lopt_set dfs f)
1880 ; mapM_ setExtensionFlag deps }
1882 deps = [ d | (f', d) <- impliedFlags, f' == f ]
1883 -- When you set f, set the ones it implies
1884 -- NB: use setExtensionFlag recursively, in case the implied flags
1885 -- implies further flags
1886 -- When you un-set f, however, we don't un-set the things it implies
1887 -- (except for -fno-glasgow-exts, which is treated specially)
1889 unSetExtensionFlag f = upd (\dfs -> lopt_unset dfs f)
1891 --------------------------
1892 setDumpFlag' :: DynFlag -> DynP ()
1893 setDumpFlag' dump_flag
1894 = do { setDynFlag dump_flag
1895 ; when want_recomp forceRecompile }
1897 -- Certain dumpy-things are really interested in what's going
1898 -- on during recompilation checking, so in those cases we
1899 -- don't want to turn it off.
1900 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1901 Opt_D_dump_hi_diffs]
1903 forceRecompile :: DynP ()
1904 -- Whenver we -ddump, force recompilation (by switching off the
1905 -- recompilation checker), else you don't see the dump! However,
1906 -- don't switch it off in --make mode, else *everything* gets
1907 -- recompiled which probably isn't what you want
1908 forceRecompile = do { dfs <- liftEwM getCmdLineState
1909 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1911 force_recomp dfs = isOneShot (ghcMode dfs)
1913 setVerboseCore2Core :: DynP ()
1914 setVerboseCore2Core = do forceRecompile
1915 setDynFlag Opt_D_verbose_core2core
1916 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1919 setDumpSimplPhases :: String -> DynP ()
1920 setDumpSimplPhases s = do forceRecompile
1921 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1923 spec = case s of { ('=' : s') -> s'; _ -> s }
1925 setVerbosity :: Maybe Int -> DynP ()
1926 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1928 addCmdlineHCInclude :: String -> DynP ()
1929 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1931 extraPkgConf_ :: FilePath -> DynP ()
1932 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1934 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1936 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1938 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1940 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1942 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1944 setPackageName :: String -> DynFlags -> DynFlags
1945 setPackageName p s = s{ thisPackage = stringToPackageId p }
1947 -- If we're linking a binary, then only targets that produce object
1948 -- code are allowed (requests for other target types are ignored).
1949 setTarget :: HscTarget -> DynP ()
1950 setTarget l = upd set
1953 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1956 -- Changes the target only if we're compiling object code. This is
1957 -- used by -fasm and -fvia-C, which switch from one to the other, but
1958 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1959 -- can be safely used in an OPTIONS_GHC pragma.
1960 setObjTarget :: HscTarget -> DynP ()
1961 setObjTarget l = upd set
1964 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1967 setOptLevel :: Int -> DynFlags -> DynFlags
1968 setOptLevel n dflags
1969 | hscTarget dflags == HscInterpreted && n > 0
1971 -- not in IO any more, oh well:
1972 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1974 = updOptLevel n dflags
1977 -- -Odph is equivalent to
1979 -- -O2 optimise as much as possible
1980 -- -fno-method-sharing sharing specialisation defeats fusion
1982 -- -fdicts-cheap always inline dictionaries
1983 -- -fmax-simplifier-iterations20 this is necessary sometimes
1984 -- -fsimplifier-phases=3 we use an additional simplifier phase
1986 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1987 -- -fno-spec-constr-count SpecConstr as much as possible
1988 -- -finline-enough-args hack to prevent excessive inlining
1990 setDPHOpt :: DynFlags -> DynFlags
1991 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1993 , specConstrThreshold = Nothing
1994 , specConstrCount = Nothing
1996 `dopt_set` Opt_DictsCheap
1997 `dopt_unset` Opt_MethodSharing
1999 data DPHBackend = DPHPar
2002 deriving(Eq, Ord, Enum, Show)
2004 setDPHBackend :: DPHBackend -> DynP ()
2005 setDPHBackend backend
2007 upd $ \dflags -> dflags { dphBackend = backend }
2008 mapM_ exposePackage (dph_packages backend)
2010 dph_packages DPHThis = []
2011 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2012 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2014 dphPackage :: DynFlags -> PackageId
2015 dphPackage dflags = case dphBackend dflags of
2016 DPHPar -> dphParPackageId
2017 DPHSeq -> dphSeqPackageId
2018 DPHThis -> thisPackage dflags
2020 setMainIs :: String -> DynP ()
2022 | not (null main_fn) && isLower (head main_fn)
2023 -- The arg looked like "Foo.Bar.baz"
2024 = upd $ \d -> d{ mainFunIs = Just main_fn,
2025 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2027 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2028 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2030 | otherwise -- The arg looked like "baz"
2031 = upd $ \d -> d{ mainFunIs = Just arg }
2033 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2035 -----------------------------------------------------------------------------
2036 -- Paths & Libraries
2038 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2040 -- -i on its own deletes the import paths
2041 addImportPath "" = upd (\s -> s{importPaths = []})
2042 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2046 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2049 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2051 addFrameworkPath p =
2052 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2054 #ifndef mingw32_TARGET_OS
2055 split_marker :: Char
2056 split_marker = ':' -- not configurable (ToDo)
2059 splitPathList :: String -> [String]
2060 splitPathList s = filter notNull (splitUp s)
2061 -- empty paths are ignored: there might be a trailing
2062 -- ':' in the initial list, for example. Empty paths can
2063 -- cause confusion when they are translated into -I options
2064 -- for passing to gcc.
2066 #ifndef mingw32_TARGET_OS
2067 splitUp xs = split split_marker xs
2069 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2071 -- That is, if "foo:bar:baz" is used, this interpreted as
2072 -- consisting of three entries, 'foo', 'bar', 'baz'.
2073 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2074 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2076 -- Notice that no attempt is made to fully replace the 'standard'
2077 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2078 -- that this will cause too much breakage for users & ':' will
2079 -- work fine even with DOS paths, if you're not insisting on being silly.
2082 splitUp (x:':':div:xs) | div `elem` dir_markers
2083 = ((x:':':div:p): splitUp rs)
2085 (p,rs) = findNextPath xs
2086 -- we used to check for existence of the path here, but that
2087 -- required the IO monad to be threaded through the command-line
2088 -- parser which is quite inconvenient. The
2089 splitUp xs = cons p (splitUp rs)
2091 (p,rs) = findNextPath xs
2096 -- will be called either when we've consumed nought or the
2097 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2098 -- finding the next split marker.
2100 case break (`elem` split_markers) xs of
2101 (p, _:ds) -> (p, ds)
2104 split_markers :: [Char]
2105 split_markers = [':', ';']
2107 dir_markers :: [Char]
2108 dir_markers = ['/', '\\']
2111 -- -----------------------------------------------------------------------------
2112 -- tmpDir, where we store temporary files.
2114 setTmpDir :: FilePath -> DynFlags -> DynFlags
2115 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2116 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2117 -- seem necessary now --SDM 7/2/2008
2119 -----------------------------------------------------------------------------
2122 setRtsOpts :: String -> DynP ()
2123 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2125 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2126 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2128 -----------------------------------------------------------------------------
2131 setOptHpcDir :: String -> DynP ()
2132 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2134 -----------------------------------------------------------------------------
2135 -- Via-C compilation stuff
2137 -- There are some options that we need to pass to gcc when compiling
2138 -- Haskell code via C, but are only supported by recent versions of
2139 -- gcc. The configure script decides which of these options we need,
2140 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2141 -- read before each via-C compilation. The advantage of having these
2142 -- in a separate file is that the file can be created at install-time
2143 -- depending on the available gcc version, and even re-generated later
2144 -- if gcc is upgraded.
2146 -- The options below are not dependent on the version of gcc, only the
2149 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2150 [String]) -- for registerised HC compilations
2151 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2152 in (cCcOpts ++ flagsAll, flagsRegHc)
2154 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2155 [String]) -- for registerised HC compilations
2156 machdepCCOpts' _dflags
2157 #if alpha_TARGET_ARCH
2159 #ifdef HAVE_THREADED_RTS_SUPPORT
2163 -- For now, to suppress the gcc warning "call-clobbered
2164 -- register used for global register variable", we simply
2165 -- disable all warnings altogether using the -w flag. Oh well.
2167 #elif hppa_TARGET_ARCH
2168 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2169 -- (very nice, but too bad the HP /usr/include files don't agree.)
2170 = ( ["-D_HPUX_SOURCE"], [] )
2172 #elif m68k_TARGET_ARCH
2173 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2174 -- popping of args to routines to be explicit; if we let things
2175 -- be deferred 'til after an STGJUMP, imminent death is certain!
2177 -- -fomit-frame-pointer : *don't*
2178 -- It's better to have a6 completely tied up being a frame pointer
2179 -- rather than let GCC pick random things to do with it.
2180 -- (If we want to steal a6, then we would try to do things
2181 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2182 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2184 #elif i386_TARGET_ARCH
2185 -- -fno-defer-pop : basically the same game as for m68k
2187 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2188 -- the fp (%ebp) for our register maps.
2189 = let n_regs = stolen_x86_regs _dflags
2192 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2195 "-fomit-frame-pointer",
2196 -- we want -fno-builtin, because when gcc inlines
2197 -- built-in functions like memcpy() it tends to
2198 -- run out of registers, requiring -monly-n-regs
2200 "-DSTOLEN_X86_REGS="++show n_regs ]
2203 #elif ia64_TARGET_ARCH
2204 = ( [], ["-fomit-frame-pointer", "-G0"] )
2206 #elif x86_64_TARGET_ARCH
2209 ["-fomit-frame-pointer",
2210 "-fno-asynchronous-unwind-tables",
2211 -- the unwind tables are unnecessary for HC code,
2212 -- and get in the way of -split-objs. Another option
2213 -- would be to throw them away in the mangler, but this
2216 -- calling builtins like strlen() using the FFI can
2217 -- cause gcc to run out of regs, so use the external
2221 #elif sparc_TARGET_ARCH
2223 -- For now, to suppress the gcc warning "call-clobbered
2224 -- register used for global register variable", we simply
2225 -- disable all warnings altogether using the -w flag. Oh well.
2227 #elif powerpc_apple_darwin_TARGET
2229 -- Disable Apple's precompiling preprocessor. It's a great thing
2230 -- for "normal" programs, but it doesn't support register variable
2232 = ( [], ["-no-cpp-precomp"] )
2237 picCCOpts :: DynFlags -> [String]
2239 #if darwin_TARGET_OS
2240 -- Apple prefers to do things the other way round.
2241 -- PIC is on by default.
2242 -- -mdynamic-no-pic:
2243 -- Turn off PIC code generation.
2245 -- Don't generate "common" symbols - these are unwanted
2246 -- in dynamic libraries.
2249 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2251 = ["-mdynamic-no-pic"]
2252 #elif mingw32_TARGET_OS
2253 -- no -fPIC for Windows
2255 = ["-U __PIC__","-D__PIC__"]
2259 -- we need -fPIC for C files when we are compiling with -dynamic,
2260 -- otherwise things like stub.c files don't get compiled
2261 -- correctly. They need to reference data in the Haskell
2262 -- objects, but can't without -fPIC. See
2263 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2264 | opt_PIC || not opt_Static
2265 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2270 -- -----------------------------------------------------------------------------
2274 can_split = cSplitObjs == "YES"
2276 -- -----------------------------------------------------------------------------
2279 data Printable = String String
2280 | FromDynFlags (DynFlags -> String)
2282 compilerInfo :: [(String, Printable)]
2283 compilerInfo = [("Project name", String cProjectName),
2284 ("Project version", String cProjectVersion),
2285 ("Booter version", String cBooterVersion),
2286 ("Stage", String cStage),
2287 ("Build platform", String cBuildPlatform),
2288 ("Host platform", String cHostPlatform),
2289 ("Target platform", String cTargetPlatform),
2290 ("Have interpreter", String cGhcWithInterpreter),
2291 ("Object splitting", String cSplitObjs),
2292 ("Have native code generator", String cGhcWithNativeCodeGen),
2293 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2294 ("Support SMP", String cGhcWithSMP),
2295 ("Unregisterised", String cGhcUnregisterised),
2296 ("Tables next to code", String cGhcEnableTablesNextToCode),
2297 ("RTS ways", String cGhcRTSWays),
2298 ("Leading underscore", String cLeadingUnderscore),
2299 ("Debug on", String (show debugIsOn)),
2300 ("LibDir", FromDynFlags topDir),
2301 ("Global Package DB", FromDynFlags systemPackageConfig)