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
604 | Wrapped (Maybe String)
608 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
610 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
611 initDynFlags :: DynFlags -> IO DynFlags
612 initDynFlags dflags = do
613 -- someday these will be dynamic flags
614 ways <- readIORef v_Ways
615 refFilesToClean <- newIORef []
616 refDirsToClean <- newIORef emptyFM
619 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
620 rtsBuildTag = mkBuildTag ways,
621 filesToClean = refFilesToClean,
622 dirsToClean = refDirsToClean
625 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
626 -- and must be fully initialized by 'GHC.newSession' first.
627 defaultDynFlags :: DynFlags
630 ghcMode = CompManager,
631 ghcLink = LinkBinary,
632 hscTarget = defaultHscTarget,
638 maxSimplIterations = 4,
639 shouldDumpSimplPhase = Nothing,
641 specConstrThreshold = Just 200,
642 specConstrCount = Just 3,
643 liberateCaseThreshold = Just 200,
644 strictnessBefore = [],
646 #ifndef OMIT_NATIVE_CODEGEN
647 targetPlatform = defaultTargetPlatform,
650 cmdlineHcIncludes = [],
654 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
658 thisPackage = mainPackageId,
661 dylibInstallName = Nothing,
665 objectSuf = phaseInputExt StopLn,
666 hcSuf = phaseInputExt HCc,
669 outputFile = Nothing,
671 dynLibLoader = SystemDependent,
672 dumpPrefix = Nothing,
673 dumpPrefixForce = Nothing,
677 cmdlineFrameworks = [],
678 tmpDir = cDEFAULT_TMPDIR,
680 rtsOptsEnabled = RtsOptsSafeOnly,
686 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
699 pkgDatabase = Nothing,
700 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
701 ways = panic "defaultDynFlags: No ways",
702 buildTag = panic "defaultDynFlags: No buildTag",
703 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
705 -- initSysTools fills all these in
706 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
707 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
708 topDir = panic "defaultDynFlags: No topDir",
709 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
710 pgm_L = panic "defaultDynFlags: No pgm_L",
711 pgm_P = panic "defaultDynFlags: No pgm_P",
712 pgm_F = panic "defaultDynFlags: No pgm_F",
713 pgm_c = panic "defaultDynFlags: No pgm_c",
714 pgm_m = panic "defaultDynFlags: No pgm_m",
715 pgm_s = panic "defaultDynFlags: No pgm_s",
716 pgm_a = panic "defaultDynFlags: No pgm_a",
717 pgm_l = panic "defaultDynFlags: No pgm_l",
718 pgm_dll = panic "defaultDynFlags: No pgm_dll",
719 pgm_T = panic "defaultDynFlags: No pgm_T",
720 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
721 pgm_windres = panic "defaultDynFlags: No pgm_windres",
722 pgm_lo = panic "defaultDynFlags: No pgm_lo",
723 pgm_lc = panic "defaultDynFlags: No pgm_lc",
724 -- end of initSysTools values
726 depMakefile = "Makefile",
727 depIncludePkgDeps = False,
730 -- end of ghc -M values
731 filesToClean = panic "defaultDynFlags: No filesToClean",
732 dirsToClean = panic "defaultDynFlags: No dirsToClean",
733 haddockOptions = Nothing,
735 Opt_AutoLinkPackages,
736 Opt_ReadUserPackageConf,
746 Opt_PrintBindContents
748 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
749 -- The default -O0 options
753 extensionFlags = Left [],
755 log_action = \severity srcSpan style msg ->
757 SevOutput -> printOutput (msg style)
758 SevInfo -> printErrs (msg style)
759 SevFatal -> printErrs (msg style)
762 printErrs ((mkLocMessage srcSpan msg) style)
763 -- careful (#2302): printErrs prints in UTF-8, whereas
764 -- converting to string first and using hPutStr would
765 -- just emit the low 8 bits of each unicode char.
769 Note [Verbosity levels]
770 ~~~~~~~~~~~~~~~~~~~~~~~
771 0 | print errors & warnings only
772 1 | minimal verbosity: print "compiling M ... done." for each module.
773 2 | equivalent to -dshow-passes
774 3 | equivalent to existing "ghc -v"
775 4 | "ghc -v -ddump-most"
776 5 | "ghc -v -ddump-all"
782 flattenExtensionFlags :: DynFlags -> DynFlags
783 flattenExtensionFlags dflags
784 = case extensionFlags dflags of
787 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
790 panic "Flattening already-flattened extension flags"
792 ensureFlattenedExtensionFlags :: DynFlags -> DynFlags
793 ensureFlattenedExtensionFlags dflags
794 = case extensionFlags dflags of
797 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
802 -- OnOffs accumulate in reverse order, so we use foldr in order to
803 -- process them in the right order
804 flattenExtensionFlags' :: Maybe Language -> [OnOff ExtensionFlag]
806 flattenExtensionFlags' ml = foldr f defaultExtensionFlags
807 where f (On f) flags = f : delete f flags
808 f (Off f) flags = delete f flags
809 defaultExtensionFlags = languageExtensions ml
811 languageExtensions :: Maybe Language -> [ExtensionFlag]
812 languageExtensions Nothing
813 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
814 -- behaviour the default, to see if anyone notices
816 : languageExtensions (Just Haskell2010)
817 languageExtensions (Just Haskell98)
818 = [Opt_ImplicitPrelude,
819 Opt_MonomorphismRestriction,
821 Opt_DatatypeContexts]
822 languageExtensions (Just Haskell2010)
823 = [Opt_ImplicitPrelude,
824 Opt_MonomorphismRestriction,
825 Opt_DatatypeContexts,
827 Opt_ForeignFunctionInterface,
832 -- The DOpt class is a temporary workaround, to avoid having to do
833 -- a mass-renaming dopt->lopt at the moment
835 dopt :: a -> DynFlags -> Bool
836 dopt_set :: DynFlags -> a -> DynFlags
837 dopt_unset :: DynFlags -> a -> DynFlags
839 instance DOpt DynFlag where
842 dopt_unset = dopt_unset'
844 instance DOpt ExtensionFlag where
847 dopt_unset = lopt_unset
849 -- | Test whether a 'DynFlag' is set
850 dopt' :: DynFlag -> DynFlags -> Bool
851 dopt' f dflags = f `elem` (flags dflags)
854 dopt_set' :: DynFlags -> DynFlag -> DynFlags
855 dopt_set' dfs f = dfs{ flags = f : flags dfs }
857 -- | Unset a 'DynFlag'
858 dopt_unset' :: DynFlags -> DynFlag -> DynFlags
859 dopt_unset' dfs f = dfs{ flags = filter (/= f) (flags dfs) }
861 -- | Test whether a 'ExtensionFlag' is set
862 lopt :: ExtensionFlag -> DynFlags -> Bool
863 lopt f dflags = case extensionFlags dflags of
864 Left _ -> panic ("Testing for extension flag " ++ show f ++ " before flattening")
865 Right flags -> f `elem` flags
867 -- | Set a 'ExtensionFlag'
868 lopt_set :: DynFlags -> ExtensionFlag -> DynFlags
869 lopt_set dfs f = case extensionFlags dfs of
870 Left onoffs -> dfs { extensionFlags = Left (On f : onoffs) }
871 Right _ -> panic ("Setting extension flag " ++ show f ++ " after flattening")
873 -- | Set a 'ExtensionFlag'
874 lopt_set_flattened :: DynFlags -> ExtensionFlag -> DynFlags
875 lopt_set_flattened dfs f = case extensionFlags dfs of
877 panic ("Setting extension flag " ++ show f ++ " before flattening, but expected flattened")
879 dfs { extensionFlags = Right (f : delete f flags) }
881 -- | Unset a 'ExtensionFlag'
882 lopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
883 lopt_unset dfs f = case extensionFlags dfs of
884 Left onoffs -> dfs { extensionFlags = Left (Off f : onoffs) }
885 Right _ -> panic ("Unsetting extension flag " ++ show f ++ " after flattening")
887 -- | Unset a 'ExtensionFlag'
888 lopt_unset_flattened :: DynFlags -> ExtensionFlag -> DynFlags
889 lopt_unset_flattened dfs f = case extensionFlags dfs of
891 panic ("Unsetting extension flag " ++ show f ++ " before flattening, but expected flattened")
893 dfs { extensionFlags = Right (delete f flags) }
895 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
896 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
897 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
898 -> [a] -- ^ Correctly ordered extracted options
899 getOpts dflags opts = reverse (opts dflags)
900 -- We add to the options from the front, so we need to reverse the list
902 -- | Gets the verbosity flag for the current verbosity level. This is fed to
903 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
904 getVerbFlag :: DynFlags -> String
906 | verbosity dflags >= 3 = "-v"
909 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
910 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
911 setPgmP, addOptl, addOptP,
912 addCmdlineFramework, addHaddockOpts
913 :: String -> DynFlags -> DynFlags
914 setOutputFile, setOutputHi, setDumpPrefixForce
915 :: Maybe String -> DynFlags -> DynFlags
917 setObjectDir f d = d{ objectDir = Just f}
918 setHiDir f d = d{ hiDir = Just f}
919 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
920 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
921 -- \#included from the .hc file when compiling with -fvia-C.
922 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
923 setDylibInstallName f d = d{ dylibInstallName = Just f}
925 setObjectSuf f d = d{ objectSuf = f}
926 setHiSuf f d = d{ hiSuf = f}
927 setHcSuf f d = d{ hcSuf = f}
929 setOutputFile f d = d{ outputFile = f}
930 setOutputHi f d = d{ outputHi = f}
932 parseDynLibLoaderMode f d =
934 ("deploy", "") -> d{ dynLibLoader = Deployable }
935 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
936 ("wrapped", "") -> d{ dynLibLoader = Wrapped Nothing }
937 ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
938 ("wrapped:", flex) -> d{ dynLibLoader = Wrapped (Just flex) }
939 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
941 setDumpPrefixForce f d = d { dumpPrefixForce = f}
943 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
944 -- Config.hs should really use Option.
945 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
946 addOptl f d = d{ opt_l = f : opt_l d}
947 addOptP f d = d{ opt_P = f : opt_P d}
950 setDepMakefile :: FilePath -> DynFlags -> DynFlags
951 setDepMakefile f d = d { depMakefile = deOptDep f }
953 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
954 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
956 addDepExcludeMod :: String -> DynFlags -> DynFlags
958 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
960 addDepSuffix :: FilePath -> DynFlags -> DynFlags
961 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
964 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
965 -- we need to strip the "-optdep" off of the arg
966 deOptDep :: String -> String
967 deOptDep x = case stripPrefix "-optdep" x of
971 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
973 addHaddockOpts f d = d{ haddockOptions = Just f}
975 -- -----------------------------------------------------------------------------
976 -- Command-line options
978 -- | When invoking external tools as part of the compilation pipeline, we
979 -- pass these a sequence of options on the command-line. Rather than
980 -- just using a list of Strings, we use a type that allows us to distinguish
981 -- between filepaths and 'other stuff'. The reason for this is that
982 -- this type gives us a handle on transforming filenames, and filenames only,
983 -- to whatever format they're expected to be on a particular platform.
985 = FileOption -- an entry that _contains_ filename(s) / filepaths.
986 String -- a non-filepath prefix that shouldn't be
987 -- transformed (e.g., "/out=")
988 String -- the filepath/filename portion
991 showOpt :: Option -> String
992 showOpt (FileOption pre f) = pre ++ f
993 showOpt (Option s) = s
995 -----------------------------------------------------------------------------
996 -- Setting the optimisation level
998 updOptLevel :: Int -> DynFlags -> DynFlags
999 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
1001 = dfs2{ optLevel = final_n }
1003 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
1004 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
1005 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
1007 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
1008 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
1010 optLevelFlags :: [([Int], DynFlag)]
1012 = [ ([0], Opt_IgnoreInterfacePragmas)
1013 , ([0], Opt_OmitInterfacePragmas)
1015 , ([1,2], Opt_IgnoreAsserts)
1016 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1018 , ([1,2], Opt_DoEtaReduction)
1019 , ([1,2], Opt_CaseMerge)
1020 , ([1,2], Opt_Strictness)
1022 , ([1,2], Opt_FullLaziness)
1023 , ([1,2], Opt_Specialise)
1024 , ([1,2], Opt_FloatIn)
1026 , ([2], Opt_LiberateCase)
1027 , ([2], Opt_SpecConstr)
1029 -- , ([2], Opt_StaticArgumentTransformation)
1030 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1031 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1032 -- several improvements to the heuristics, and I'm concerned that without
1033 -- those changes SAT will interfere with some attempts to write "high
1034 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1035 -- this year. In particular, the version in HEAD lacks the tail call
1036 -- criterion, so many things that look like reasonable loops will be
1037 -- turned into functions with extra (unneccesary) thunk creation.
1039 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1040 -- This one is important for a tiresome reason:
1041 -- we want to make sure that the bindings for data
1042 -- constructors are eta-expanded. This is probably
1043 -- a good thing anyway, but it seems fragile.
1046 -- -----------------------------------------------------------------------------
1047 -- Standard sets of warning options
1049 standardWarnings :: [DynFlag]
1051 = [ Opt_WarnWarningsDeprecations,
1052 Opt_WarnDeprecatedFlags,
1053 Opt_WarnUnrecognisedPragmas,
1054 Opt_WarnOverlappingPatterns,
1055 Opt_WarnMissingFields,
1056 Opt_WarnMissingMethods,
1057 Opt_WarnDuplicateExports,
1058 Opt_WarnLazyUnliftedBindings,
1059 Opt_WarnDodgyForeignImports,
1060 Opt_WarnWrongDoBind,
1061 Opt_WarnAlternativeLayoutRuleTransitional
1064 minusWOpts :: [DynFlag]
1066 = standardWarnings ++
1067 [ Opt_WarnUnusedBinds,
1068 Opt_WarnUnusedMatches,
1069 Opt_WarnUnusedImports,
1070 Opt_WarnIncompletePatterns,
1071 Opt_WarnDodgyExports,
1072 Opt_WarnDodgyImports
1075 minusWallOpts :: [DynFlag]
1078 [ Opt_WarnTypeDefaults,
1079 Opt_WarnNameShadowing,
1080 Opt_WarnMissingSigs,
1083 Opt_WarnUnusedDoBind
1086 -- minuswRemovesOpts should be every warning option
1087 minuswRemovesOpts :: [DynFlag]
1090 [Opt_WarnImplicitPrelude,
1091 Opt_WarnIncompletePatternsRecUpd,
1092 Opt_WarnSimplePatterns,
1093 Opt_WarnMonomorphism,
1094 Opt_WarnUnrecognisedPragmas,
1098 -- -----------------------------------------------------------------------------
1099 -- StgToDo: abstraction of stg-to-stg passes to run.
1102 = StgDoMassageForProfiling -- should be (next to) last
1103 -- There's also setStgVarInfo, but its absolute "lastness"
1104 -- is so critical that it is hardwired in (no flag).
1107 getStgToDo :: DynFlags -> [StgToDo]
1111 stg_stats = dopt Opt_StgStats dflags
1113 todo1 = if stg_stats then [D_stg_stats] else []
1115 todo2 | WayProf `elem` wayNames dflags
1116 = StgDoMassageForProfiling : todo1
1120 {- **********************************************************************
1124 %********************************************************************* -}
1126 -- -----------------------------------------------------------------------------
1127 -- Parsing the dynamic flags.
1129 -- | Parse dynamic flags from a list of command line arguments. Returns the
1130 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1131 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1132 -- flags or missing arguments).
1133 parseDynamicFlags :: Monad m =>
1134 DynFlags -> [Located String]
1135 -> m (DynFlags, [Located String], [Located String])
1136 -- ^ Updated 'DynFlags', left-over arguments, and
1137 -- list of warnings.
1138 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1140 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1141 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1142 parseDynamicNoPackageFlags :: Monad m =>
1143 DynFlags -> [Located String]
1144 -> m (DynFlags, [Located String], [Located String])
1145 -- ^ Updated 'DynFlags', left-over arguments, and
1146 -- list of warnings.
1147 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1149 parseDynamicFlags_ :: Monad m =>
1150 DynFlags -> [Located String] -> Bool
1151 -> m (DynFlags, [Located String], [Located String])
1152 parseDynamicFlags_ dflags0 args pkg_flags = do
1153 -- XXX Legacy support code
1154 -- We used to accept things like
1155 -- optdep-f -optdepdepend
1156 -- optdep-f -optdep depend
1157 -- optdep -f -optdepdepend
1158 -- optdep -f -optdep depend
1159 -- but the spaces trip up proper argument handling. So get rid of them.
1160 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1161 f (x : xs) = x : f xs
1165 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1166 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1167 | otherwise = dynamic_flags
1169 let ((leftover, errs, warns), dflags1)
1170 = runCmdLine (processArgs flag_spec args') dflags0
1171 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1173 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1174 -- isn't up to the job. We know that if hscTarget == HscC, then the
1175 -- user has explicitly used -fvia-C, because -fasm is the default,
1176 -- unless there is no NCG on this platform. The latter case is
1177 -- checked when the -fPIC flag is parsed.
1179 let (pic_warns, dflags2)
1180 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1181 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1182 dflags1{ hscTarget = HscAsm })
1183 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1184 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1185 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1186 ++ "dynamic on this platform;\n ignoring -fllvm"],
1187 dflags1{ hscTarget = HscAsm })
1189 | otherwise = ([], dflags1)
1191 return (dflags2, leftover, pic_warns ++ warns)
1194 {- **********************************************************************
1196 DynFlags specifications
1198 %********************************************************************* -}
1200 allFlags :: [String]
1201 allFlags = map ('-':) $
1202 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1203 map ("fno-"++) flags ++
1204 map ("f"++) flags ++
1205 map ("f"++) flags' ++
1206 map ("X"++) supportedExtensions
1207 where ok (PrefixPred _ _) = False
1209 flags = [ name | (name, _, _) <- fFlags ]
1210 flags' = [ name | (name, _, _) <- fLangFlags ]
1212 --------------- The main flags themselves ------------------
1213 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1215 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1216 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1217 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1219 (HasArg (\s -> do { addCmdlineHCInclude s
1220 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1221 , Flag "v" (OptIntSuffix setVerbosity)
1223 ------- Specific phases --------------------------------------------
1224 -- need to appear before -pgmL to be parsed as LLVM flags.
1225 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1226 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1227 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1228 , Flag "pgmP" (hasArg setPgmP)
1229 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1230 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1231 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1232 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1233 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1234 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1235 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1236 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1238 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1239 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1240 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1241 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1242 , Flag "optP" (hasArg addOptP)
1243 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1244 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1245 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1246 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1247 , Flag "optl" (hasArg addOptl)
1248 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1251 (NoArg (if can_split
1252 then setDynFlag Opt_SplitObjs
1253 else addWarn "ignoring -fsplit-objs"))
1255 -------- ghc -M -----------------------------------------------------
1256 , Flag "dep-suffix" (hasArg addDepSuffix)
1257 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1258 , Flag "dep-makefile" (hasArg setDepMakefile)
1259 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1260 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1261 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1262 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1263 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1264 , Flag "exclude-module" (hasArg addDepExcludeMod)
1265 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1266 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1268 -------- Linking ----------------------------------------------------
1269 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1270 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1271 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1272 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1274 ------- Libraries ---------------------------------------------------
1275 , Flag "L" (Prefix addLibraryPath)
1276 , Flag "l" (AnySuffix (upd . addOptl))
1278 ------- Frameworks --------------------------------------------------
1279 -- -framework-path should really be -F ...
1280 , Flag "framework-path" (HasArg addFrameworkPath)
1281 , Flag "framework" (hasArg addCmdlineFramework)
1283 ------- Output Redirection ------------------------------------------
1284 , Flag "odir" (hasArg setObjectDir)
1285 , Flag "o" (SepArg (upd . setOutputFile . Just))
1286 , Flag "ohi" (hasArg (setOutputHi . Just ))
1287 , Flag "osuf" (hasArg setObjectSuf)
1288 , Flag "hcsuf" (hasArg setHcSuf)
1289 , Flag "hisuf" (hasArg setHiSuf)
1290 , Flag "hidir" (hasArg setHiDir)
1291 , Flag "tmpdir" (hasArg setTmpDir)
1292 , Flag "stubdir" (hasArg setStubDir)
1293 , Flag "outputdir" (hasArg setOutputDir)
1294 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1296 ------- Keeping temporary files -------------------------------------
1297 -- These can be singular (think ghc -c) or plural (think ghc --make)
1298 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1299 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1300 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1301 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1302 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1303 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1304 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1305 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1306 -- This only makes sense as plural
1307 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1309 ------- Miscellaneous ----------------------------------------------
1310 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1311 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1312 , Flag "with-rtsopts" (HasArg setRtsOpts)
1313 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1314 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1315 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1316 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1317 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1318 , Flag "main-is" (SepArg setMainIs)
1319 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1320 , Flag "haddock-opts" (hasArg addHaddockOpts)
1321 , Flag "hpcdir" (SepArg setOptHpcDir)
1323 ------- recompilation checker --------------------------------------
1324 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1325 ; deprecate "Use -fno-force-recomp instead" }))
1326 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1327 ; deprecate "Use -fforce-recomp instead" }))
1329 ------ HsCpp opts ---------------------------------------------------
1330 , Flag "D" (AnySuffix (upd . addOptP))
1331 , Flag "U" (AnySuffix (upd . addOptP))
1333 ------- Include/Import Paths ----------------------------------------
1334 , Flag "I" (Prefix addIncludePath)
1335 , Flag "i" (OptPrefix addImportPath)
1337 ------ Debugging ----------------------------------------------------
1338 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1340 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1341 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1342 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1343 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1344 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1345 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1346 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1347 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1348 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1349 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1350 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1351 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1352 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1353 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1354 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1355 ; setDumpFlag' Opt_D_dump_llvm}))
1356 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1357 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1358 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1359 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1360 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1361 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1362 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1363 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1364 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1365 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1366 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1367 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1368 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1369 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1370 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1371 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1372 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1373 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1374 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1375 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1376 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1377 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1378 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1379 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1380 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1381 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1382 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1383 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1384 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1385 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1386 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1387 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1388 ; setVerboseCore2Core }))
1389 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1390 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1391 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1392 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1393 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1394 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1395 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1396 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1397 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1398 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1399 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1400 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1401 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1402 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1403 , Flag "dshow-passes" (NoArg (do forceRecompile
1404 setVerbosity (Just 2)))
1405 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1407 ------ Machine dependant (-m<blah>) stuff ---------------------------
1409 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1410 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1411 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1412 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1414 ------ Warning opts -------------------------------------------------
1415 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1416 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1417 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1418 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1419 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1420 ; deprecate "Use -w instead" }))
1421 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1423 ------ Optimisation flags ------------------------------------------
1424 , Flag "O" (noArg (setOptLevel 1))
1425 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1426 , Flag "Odph" (noArg setDPHOpt)
1427 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1428 -- If the number is missing, use 1
1430 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1431 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1432 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1433 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1434 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1435 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1436 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1437 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1438 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1439 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1440 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1442 ------ Profiling ----------------------------------------------------
1444 -- XXX Should the -f* flags be deprecated?
1445 -- They don't seem to be documented
1446 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1447 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1448 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1449 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1450 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1451 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1452 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1453 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1454 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1456 ------ DPH flags ----------------------------------------------------
1458 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1459 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1460 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1462 ------ Compiler flags -----------------------------------------------
1464 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1465 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1466 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1467 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1468 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1469 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1471 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1472 setTarget HscNothing))
1473 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1474 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1475 , Flag "fglasgow-exts" (NoArg enableGlasgowExts)
1476 , Flag "fno-glasgow-exts" (NoArg disableGlasgowExts)
1478 ++ map (mkFlag True "f" setDynFlag ) fFlags
1479 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1480 ++ map (mkFlag True "f" setExtensionFlag ) fLangFlags
1481 ++ map (mkFlag False "fno-" unSetExtensionFlag) fLangFlags
1482 ++ map (mkFlag True "X" setExtensionFlag ) xFlags
1483 ++ map (mkFlag False "XNo" unSetExtensionFlag) xFlags
1484 ++ map (mkFlag True "X" setLanguage) languageFlags
1486 package_flags :: [Flag (CmdLineP DynFlags)]
1488 ------- Packages ----------------------------------------------------
1489 Flag "package-conf" (HasArg extraPkgConf_)
1490 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1491 , Flag "package-name" (hasArg setPackageName)
1492 , Flag "package-id" (HasArg exposePackageId)
1493 , Flag "package" (HasArg exposePackage)
1494 , Flag "hide-package" (HasArg hidePackage)
1495 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1496 , Flag "ignore-package" (HasArg ignorePackage)
1497 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1498 ; deprecate "Use -package instead" }))
1502 = ( String -- Flag in string form
1503 , flag -- Flag in internal form
1504 , Bool -> DynP ()) -- Extra action to run when the flag is found
1505 -- Typically, emit a warning or error
1506 -- True <=> we are turning the flag on
1507 -- False <=> we are turning the flag on
1510 mkFlag :: Bool -- ^ True <=> it should be turned on
1511 -> String -- ^ The flag prefix
1512 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1513 -> FlagSpec flag -- ^ Specification of this particular flag
1514 -> Flag (CmdLineP DynFlags)
1515 mkFlag turnOn flagPrefix f (name, flag, extra_action)
1516 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turnOn))
1518 deprecatedForExtension :: String -> Bool -> DynP ()
1519 deprecatedForExtension lang turn_on
1520 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1522 flag | turn_on = lang
1523 | otherwise = "No"++lang
1525 useInstead :: String -> Bool -> DynP ()
1526 useInstead flag turn_on
1527 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1529 no = if turn_on then "" else "no-"
1531 nop :: Bool -> DynP ()
1534 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1535 fFlags :: [FlagSpec DynFlag]
1537 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1538 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1539 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1540 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1541 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1542 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1543 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1544 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1545 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1546 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1547 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1548 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1549 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1550 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1551 ( "warn-simple-patterns", Opt_WarnSimplePatterns, nop ),
1552 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1553 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1554 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1555 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1556 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1557 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1558 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1559 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1560 ( "warn-orphans", Opt_WarnOrphans, nop ),
1561 ( "warn-tabs", Opt_WarnTabs, nop ),
1562 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1563 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings,
1564 \_ -> deprecate "lazy unlifted bindings will be an error in GHC 6.14, and this flag will no longer exist"),
1565 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1566 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1567 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1568 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1569 ( "strictness", Opt_Strictness, nop ),
1570 ( "specialise", Opt_Specialise, nop ),
1571 ( "float-in", Opt_FloatIn, nop ),
1572 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1573 ( "full-laziness", Opt_FullLaziness, nop ),
1574 ( "liberate-case", Opt_LiberateCase, nop ),
1575 ( "spec-constr", Opt_SpecConstr, nop ),
1576 ( "cse", Opt_CSE, nop ),
1577 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1578 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1579 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1580 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1581 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1582 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1583 ( "case-merge", Opt_CaseMerge, nop ),
1584 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1585 ( "method-sharing", Opt_MethodSharing, nop ),
1586 ( "dicts-cheap", Opt_DictsCheap, nop ),
1587 ( "excess-precision", Opt_ExcessPrecision, nop ),
1588 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1589 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1590 ( "print-bind-result", Opt_PrintBindResult, nop ),
1591 ( "force-recomp", Opt_ForceRecomp, nop ),
1592 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1593 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1594 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1595 ( "break-on-exception", Opt_BreakOnException, nop ),
1596 ( "break-on-error", Opt_BreakOnError, nop ),
1597 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1598 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1599 ( "run-cps", Opt_RunCPS, nop ),
1600 ( "run-cpsz", Opt_RunCPSZ, nop ),
1601 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1602 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1603 ( "vectorise", Opt_Vectorise, nop ),
1604 ( "regs-graph", Opt_RegsGraph, nop ),
1605 ( "regs-iterative", Opt_RegsIterative, nop ),
1606 ( "gen-manifest", Opt_GenManifest, nop ),
1607 ( "embed-manifest", Opt_EmbedManifest, nop ),
1608 ( "ext-core", Opt_EmitExternalCore, nop ),
1609 ( "shared-implib", Opt_SharedImplib, nop ),
1610 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1611 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1614 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1615 fLangFlags :: [FlagSpec ExtensionFlag]
1617 ( "th", Opt_TemplateHaskell,
1618 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1619 ( "fi", Opt_ForeignFunctionInterface,
1620 deprecatedForExtension "ForeignFunctionInterface" ),
1621 ( "ffi", Opt_ForeignFunctionInterface,
1622 deprecatedForExtension "ForeignFunctionInterface" ),
1623 ( "arrows", Opt_Arrows,
1624 deprecatedForExtension "Arrows" ),
1625 ( "generics", Opt_Generics,
1626 deprecatedForExtension "Generics" ),
1627 ( "implicit-prelude", Opt_ImplicitPrelude,
1628 deprecatedForExtension "ImplicitPrelude" ),
1629 ( "bang-patterns", Opt_BangPatterns,
1630 deprecatedForExtension "BangPatterns" ),
1631 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1632 deprecatedForExtension "MonomorphismRestriction" ),
1633 ( "mono-pat-binds", Opt_MonoPatBinds,
1634 deprecatedForExtension "MonoPatBinds" ),
1635 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1636 deprecatedForExtension "ExtendedDefaultRules" ),
1637 ( "implicit-params", Opt_ImplicitParams,
1638 deprecatedForExtension "ImplicitParams" ),
1639 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1640 deprecatedForExtension "ScopedTypeVariables" ),
1642 deprecatedForExtension "PArr" ),
1643 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1644 deprecatedForExtension "OverlappingInstances" ),
1645 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1646 deprecatedForExtension "UndecidableInstances" ),
1647 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1648 deprecatedForExtension "IncoherentInstances" )
1651 supportedLanguages :: [String]
1652 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1654 supportedExtensions :: [String]
1655 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1657 supportedLanguagesAndExtensions :: [String]
1658 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1660 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1661 languageFlags :: [FlagSpec Language]
1663 ( "Haskell98", Haskell98, nop ),
1664 ( "Haskell2010", Haskell2010, nop )
1667 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1668 xFlags :: [FlagSpec ExtensionFlag]
1670 ( "CPP", Opt_Cpp, nop ),
1671 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1672 ( "TupleSections", Opt_TupleSections, nop ),
1673 ( "PatternGuards", Opt_PatternGuards, nop ),
1674 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1675 ( "MagicHash", Opt_MagicHash, nop ),
1676 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1677 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1678 ( "KindSignatures", Opt_KindSignatures, nop ),
1679 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1680 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1681 ( "TransformListComp", Opt_TransformListComp, nop ),
1682 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1683 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1684 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1685 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1686 ( "Rank2Types", Opt_Rank2Types, nop ),
1687 ( "RankNTypes", Opt_RankNTypes, nop ),
1688 ( "ImpredicativeTypes", Opt_ImpredicativeTypes,
1689 \_ -> deprecate "impredicative polymorphism will be simplified or removed in GHC 6.14" ),
1690 ( "TypeOperators", Opt_TypeOperators, nop ),
1691 ( "RecursiveDo", Opt_RecursiveDo,
1692 deprecatedForExtension "DoRec"),
1693 ( "DoRec", Opt_DoRec, nop ),
1694 ( "Arrows", Opt_Arrows, nop ),
1695 ( "PArr", Opt_PArr, nop ),
1696 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1697 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1698 ( "Generics", Opt_Generics, nop ),
1699 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1700 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1701 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1702 ( "RecordPuns", Opt_RecordPuns,
1703 deprecatedForExtension "NamedFieldPuns" ),
1704 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1705 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1706 ( "GADTs", Opt_GADTs, nop ),
1707 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1708 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1709 ( "BangPatterns", Opt_BangPatterns, nop ),
1710 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1711 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1712 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1713 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1714 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1715 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1716 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1717 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1718 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1719 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, nop ),
1720 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1721 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1722 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1724 ( "PatternSignatures", Opt_ScopedTypeVariables,
1725 deprecatedForExtension "ScopedTypeVariables" ),
1727 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1728 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1729 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1730 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1731 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1732 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1733 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1734 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1735 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1736 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1737 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1738 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1739 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1740 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1741 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1742 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1743 ( "PackageImports", Opt_PackageImports, nop ),
1744 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1745 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1748 impliedFlags :: [(ExtensionFlag, ExtensionFlag)]
1750 = [ (Opt_RankNTypes, Opt_ExplicitForAll)
1751 , (Opt_Rank2Types, Opt_ExplicitForAll)
1752 , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
1753 , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
1754 , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
1755 , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
1757 , (Opt_GADTs, Opt_RelaxedPolyRec) -- We want type-sig variables to
1758 -- be completely rigid for GADTs
1760 , (Opt_TypeFamilies, Opt_RelaxedPolyRec) -- Trac #2944 gives a nice example
1761 , (Opt_TypeFamilies, Opt_KindSignatures) -- Type families use kind signatures
1762 -- all over the place
1764 , (Opt_ScopedTypeVariables, Opt_RelaxedPolyRec) -- Ditto for scoped type variables; see
1765 -- Note [Scoped tyvars] in TcBinds
1766 , (Opt_ImpredicativeTypes, Opt_RankNTypes)
1768 -- Record wild-cards implies field disambiguation
1769 -- Otherwise if you write (C {..}) you may well get
1770 -- stuff like " 'a' not in scope ", which is a bit silly
1771 -- if the compiler has just filled in field 'a' of constructor 'C'
1772 , (Opt_RecordWildCards, Opt_DisambiguateRecordFields)
1775 enableGlasgowExts :: DynP ()
1776 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1777 mapM_ setExtensionFlag glasgowExtsFlags
1779 disableGlasgowExts :: DynP ()
1780 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1781 mapM_ unSetExtensionFlag glasgowExtsFlags
1783 glasgowExtsFlags :: [ExtensionFlag]
1784 glasgowExtsFlags = [
1785 Opt_ForeignFunctionInterface
1786 , Opt_UnliftedFFITypes
1788 , Opt_ImplicitParams
1789 , Opt_ScopedTypeVariables
1791 , Opt_TypeSynonymInstances
1792 , Opt_StandaloneDeriving
1793 , Opt_DeriveDataTypeable
1795 , Opt_DeriveFoldable
1796 , Opt_DeriveTraversable
1797 , Opt_FlexibleContexts
1798 , Opt_FlexibleInstances
1799 , Opt_ConstrainedClassMethods
1800 , Opt_MultiParamTypeClasses
1801 , Opt_FunctionalDependencies
1803 , Opt_PolymorphicComponents
1804 , Opt_ExistentialQuantification
1806 , Opt_PostfixOperators
1808 , Opt_LiberalTypeSynonyms
1812 , Opt_ParallelListComp
1813 , Opt_EmptyDataDecls
1814 , Opt_KindSignatures
1815 , Opt_GeneralizedNewtypeDeriving
1816 , Opt_TypeFamilies ]
1819 -- Consult the RTS to find whether GHC itself has been built profiled
1820 -- If so, you can't use Template Haskell
1821 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1823 rtsIsProfiled :: Bool
1824 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1826 checkTemplateHaskellOk :: Bool -> DynP ()
1827 checkTemplateHaskellOk turn_on
1828 | turn_on && rtsIsProfiled
1829 = addErr "You can't use Template Haskell with a profiled compiler"
1833 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1834 -- so we simply say "ok". It doesn't matter because TH isn't
1835 -- available in stage 1 anyway.
1836 checkTemplateHaskellOk turn_on = return ()
1839 {- **********************************************************************
1841 DynFlags constructors
1843 %********************************************************************* -}
1845 type DynP = EwM (CmdLineP DynFlags)
1847 upd :: (DynFlags -> DynFlags) -> DynP ()
1848 upd f = liftEwM (do { dfs <- getCmdLineState
1849 ; putCmdLineState $! (f dfs) })
1851 --------------- Constructor functions for OptKind -----------------
1852 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1853 noArg fn = NoArg (upd fn)
1855 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1856 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1858 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1859 hasArg fn = HasArg (upd . fn)
1861 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1862 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1863 ; deprecate deprec })
1865 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1866 intSuffix fn = IntSuffix (\n -> upd (fn n))
1868 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1869 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1871 --------------------------
1872 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1873 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1874 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1876 --------------------------
1877 setLanguage :: Language -> DynP ()
1878 setLanguage l = upd (\dfs -> dfs { language = Just l })
1880 --------------------------
1881 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1882 setExtensionFlag f = do { upd (\dfs -> lopt_set dfs f)
1883 ; mapM_ setExtensionFlag deps }
1885 deps = [ d | (f', d) <- impliedFlags, f' == f ]
1886 -- When you set f, set the ones it implies
1887 -- NB: use setExtensionFlag recursively, in case the implied flags
1888 -- implies further flags
1889 -- When you un-set f, however, we don't un-set the things it implies
1890 -- (except for -fno-glasgow-exts, which is treated specially)
1892 unSetExtensionFlag f = upd (\dfs -> lopt_unset dfs f)
1894 --------------------------
1895 setDumpFlag' :: DynFlag -> DynP ()
1896 setDumpFlag' dump_flag
1897 = do { setDynFlag dump_flag
1898 ; when want_recomp forceRecompile }
1900 -- Certain dumpy-things are really interested in what's going
1901 -- on during recompilation checking, so in those cases we
1902 -- don't want to turn it off.
1903 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1904 Opt_D_dump_hi_diffs]
1906 forceRecompile :: DynP ()
1907 -- Whenver we -ddump, force recompilation (by switching off the
1908 -- recompilation checker), else you don't see the dump! However,
1909 -- don't switch it off in --make mode, else *everything* gets
1910 -- recompiled which probably isn't what you want
1911 forceRecompile = do { dfs <- liftEwM getCmdLineState
1912 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1914 force_recomp dfs = isOneShot (ghcMode dfs)
1916 setVerboseCore2Core :: DynP ()
1917 setVerboseCore2Core = do forceRecompile
1918 setDynFlag Opt_D_verbose_core2core
1919 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1922 setDumpSimplPhases :: String -> DynP ()
1923 setDumpSimplPhases s = do forceRecompile
1924 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1926 spec = case s of { ('=' : s') -> s'; _ -> s }
1928 setVerbosity :: Maybe Int -> DynP ()
1929 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1931 addCmdlineHCInclude :: String -> DynP ()
1932 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1934 extraPkgConf_ :: FilePath -> DynP ()
1935 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1937 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1939 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1941 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1943 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1945 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1947 setPackageName :: String -> DynFlags -> DynFlags
1948 setPackageName p s = s{ thisPackage = stringToPackageId p }
1950 -- If we're linking a binary, then only targets that produce object
1951 -- code are allowed (requests for other target types are ignored).
1952 setTarget :: HscTarget -> DynP ()
1953 setTarget l = upd set
1956 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1959 -- Changes the target only if we're compiling object code. This is
1960 -- used by -fasm and -fvia-C, which switch from one to the other, but
1961 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1962 -- can be safely used in an OPTIONS_GHC pragma.
1963 setObjTarget :: HscTarget -> DynP ()
1964 setObjTarget l = upd set
1967 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1970 setOptLevel :: Int -> DynFlags -> DynFlags
1971 setOptLevel n dflags
1972 | hscTarget dflags == HscInterpreted && n > 0
1974 -- not in IO any more, oh well:
1975 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1977 = updOptLevel n dflags
1980 -- -Odph is equivalent to
1982 -- -O2 optimise as much as possible
1983 -- -fno-method-sharing sharing specialisation defeats fusion
1985 -- -fdicts-cheap always inline dictionaries
1986 -- -fmax-simplifier-iterations20 this is necessary sometimes
1987 -- -fsimplifier-phases=3 we use an additional simplifier phase
1989 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1990 -- -fno-spec-constr-count SpecConstr as much as possible
1991 -- -finline-enough-args hack to prevent excessive inlining
1993 setDPHOpt :: DynFlags -> DynFlags
1994 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1996 , specConstrThreshold = Nothing
1997 , specConstrCount = Nothing
1999 `dopt_set` Opt_DictsCheap
2000 `dopt_unset` Opt_MethodSharing
2002 data DPHBackend = DPHPar
2005 deriving(Eq, Ord, Enum, Show)
2007 setDPHBackend :: DPHBackend -> DynP ()
2008 setDPHBackend backend
2010 upd $ \dflags -> dflags { dphBackend = backend }
2011 mapM_ exposePackage (dph_packages backend)
2013 dph_packages DPHThis = []
2014 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2015 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2017 dphPackage :: DynFlags -> PackageId
2018 dphPackage dflags = case dphBackend dflags of
2019 DPHPar -> dphParPackageId
2020 DPHSeq -> dphSeqPackageId
2021 DPHThis -> thisPackage dflags
2023 setMainIs :: String -> DynP ()
2025 | not (null main_fn) && isLower (head main_fn)
2026 -- The arg looked like "Foo.Bar.baz"
2027 = upd $ \d -> d{ mainFunIs = Just main_fn,
2028 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2030 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2031 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2033 | otherwise -- The arg looked like "baz"
2034 = upd $ \d -> d{ mainFunIs = Just arg }
2036 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2038 -----------------------------------------------------------------------------
2039 -- Paths & Libraries
2041 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2043 -- -i on its own deletes the import paths
2044 addImportPath "" = upd (\s -> s{importPaths = []})
2045 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2049 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2052 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2054 addFrameworkPath p =
2055 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2057 #ifndef mingw32_TARGET_OS
2058 split_marker :: Char
2059 split_marker = ':' -- not configurable (ToDo)
2062 splitPathList :: String -> [String]
2063 splitPathList s = filter notNull (splitUp s)
2064 -- empty paths are ignored: there might be a trailing
2065 -- ':' in the initial list, for example. Empty paths can
2066 -- cause confusion when they are translated into -I options
2067 -- for passing to gcc.
2069 #ifndef mingw32_TARGET_OS
2070 splitUp xs = split split_marker xs
2072 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2074 -- That is, if "foo:bar:baz" is used, this interpreted as
2075 -- consisting of three entries, 'foo', 'bar', 'baz'.
2076 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2077 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2079 -- Notice that no attempt is made to fully replace the 'standard'
2080 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2081 -- that this will cause too much breakage for users & ':' will
2082 -- work fine even with DOS paths, if you're not insisting on being silly.
2085 splitUp (x:':':div:xs) | div `elem` dir_markers
2086 = ((x:':':div:p): splitUp rs)
2088 (p,rs) = findNextPath xs
2089 -- we used to check for existence of the path here, but that
2090 -- required the IO monad to be threaded through the command-line
2091 -- parser which is quite inconvenient. The
2092 splitUp xs = cons p (splitUp rs)
2094 (p,rs) = findNextPath xs
2099 -- will be called either when we've consumed nought or the
2100 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2101 -- finding the next split marker.
2103 case break (`elem` split_markers) xs of
2104 (p, _:ds) -> (p, ds)
2107 split_markers :: [Char]
2108 split_markers = [':', ';']
2110 dir_markers :: [Char]
2111 dir_markers = ['/', '\\']
2114 -- -----------------------------------------------------------------------------
2115 -- tmpDir, where we store temporary files.
2117 setTmpDir :: FilePath -> DynFlags -> DynFlags
2118 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2119 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2120 -- seem necessary now --SDM 7/2/2008
2122 -----------------------------------------------------------------------------
2125 setRtsOpts :: String -> DynP ()
2126 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2128 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2129 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2131 -----------------------------------------------------------------------------
2134 setOptHpcDir :: String -> DynP ()
2135 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2137 -----------------------------------------------------------------------------
2138 -- Via-C compilation stuff
2140 -- There are some options that we need to pass to gcc when compiling
2141 -- Haskell code via C, but are only supported by recent versions of
2142 -- gcc. The configure script decides which of these options we need,
2143 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2144 -- read before each via-C compilation. The advantage of having these
2145 -- in a separate file is that the file can be created at install-time
2146 -- depending on the available gcc version, and even re-generated later
2147 -- if gcc is upgraded.
2149 -- The options below are not dependent on the version of gcc, only the
2152 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2153 [String]) -- for registerised HC compilations
2154 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2155 in (cCcOpts ++ flagsAll, flagsRegHc)
2157 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2158 [String]) -- for registerised HC compilations
2159 machdepCCOpts' _dflags
2160 #if alpha_TARGET_ARCH
2162 #ifdef HAVE_THREADED_RTS_SUPPORT
2166 -- For now, to suppress the gcc warning "call-clobbered
2167 -- register used for global register variable", we simply
2168 -- disable all warnings altogether using the -w flag. Oh well.
2170 #elif hppa_TARGET_ARCH
2171 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2172 -- (very nice, but too bad the HP /usr/include files don't agree.)
2173 = ( ["-D_HPUX_SOURCE"], [] )
2175 #elif m68k_TARGET_ARCH
2176 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2177 -- popping of args to routines to be explicit; if we let things
2178 -- be deferred 'til after an STGJUMP, imminent death is certain!
2180 -- -fomit-frame-pointer : *don't*
2181 -- It's better to have a6 completely tied up being a frame pointer
2182 -- rather than let GCC pick random things to do with it.
2183 -- (If we want to steal a6, then we would try to do things
2184 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2185 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2187 #elif i386_TARGET_ARCH
2188 -- -fno-defer-pop : basically the same game as for m68k
2190 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2191 -- the fp (%ebp) for our register maps.
2192 = let n_regs = stolen_x86_regs _dflags
2195 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2198 "-fomit-frame-pointer",
2199 -- we want -fno-builtin, because when gcc inlines
2200 -- built-in functions like memcpy() it tends to
2201 -- run out of registers, requiring -monly-n-regs
2203 "-DSTOLEN_X86_REGS="++show n_regs ]
2206 #elif ia64_TARGET_ARCH
2207 = ( [], ["-fomit-frame-pointer", "-G0"] )
2209 #elif x86_64_TARGET_ARCH
2212 ["-fomit-frame-pointer",
2213 "-fno-asynchronous-unwind-tables",
2214 -- the unwind tables are unnecessary for HC code,
2215 -- and get in the way of -split-objs. Another option
2216 -- would be to throw them away in the mangler, but this
2219 -- calling builtins like strlen() using the FFI can
2220 -- cause gcc to run out of regs, so use the external
2224 #elif sparc_TARGET_ARCH
2226 -- For now, to suppress the gcc warning "call-clobbered
2227 -- register used for global register variable", we simply
2228 -- disable all warnings altogether using the -w flag. Oh well.
2230 #elif powerpc_apple_darwin_TARGET
2232 -- Disable Apple's precompiling preprocessor. It's a great thing
2233 -- for "normal" programs, but it doesn't support register variable
2235 = ( [], ["-no-cpp-precomp"] )
2240 picCCOpts :: DynFlags -> [String]
2242 #if darwin_TARGET_OS
2243 -- Apple prefers to do things the other way round.
2244 -- PIC is on by default.
2245 -- -mdynamic-no-pic:
2246 -- Turn off PIC code generation.
2248 -- Don't generate "common" symbols - these are unwanted
2249 -- in dynamic libraries.
2252 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2254 = ["-mdynamic-no-pic"]
2255 #elif mingw32_TARGET_OS
2256 -- no -fPIC for Windows
2258 = ["-U __PIC__","-D__PIC__"]
2262 -- we need -fPIC for C files when we are compiling with -dynamic,
2263 -- otherwise things like stub.c files don't get compiled
2264 -- correctly. They need to reference data in the Haskell
2265 -- objects, but can't without -fPIC. See
2266 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2267 | opt_PIC || not opt_Static
2268 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2273 -- -----------------------------------------------------------------------------
2277 can_split = cSplitObjs == "YES"
2279 -- -----------------------------------------------------------------------------
2282 data Printable = String String
2283 | FromDynFlags (DynFlags -> String)
2285 compilerInfo :: [(String, Printable)]
2286 compilerInfo = [("Project name", String cProjectName),
2287 ("Project version", String cProjectVersion),
2288 ("Booter version", String cBooterVersion),
2289 ("Stage", String cStage),
2290 ("Build platform", String cBuildPlatform),
2291 ("Host platform", String cHostPlatform),
2292 ("Target platform", String cTargetPlatform),
2293 ("Have interpreter", String cGhcWithInterpreter),
2294 ("Object splitting", String cSplitObjs),
2295 ("Have native code generator", String cGhcWithNativeCodeGen),
2296 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2297 ("Support SMP", String cGhcWithSMP),
2298 ("Unregisterised", String cGhcUnregisterised),
2299 ("Tables next to code", String cGhcEnableTablesNextToCode),
2300 ("RTS ways", String cGhcRTSWays),
2301 ("Leading underscore", String cLeadingUnderscore),
2302 ("Debug on", String (show debugIsOn)),
2303 ("LibDir", FromDynFlags topDir),
2304 ("Global Package DB", FromDynFlags systemPackageConfig)