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
28 HscTarget(..), isObjectTarget, defaultObjectTarget,
29 GhcMode(..), isOneShot,
30 GhcLink(..), isNoLink,
34 fFlags, fLangFlags, xFlags,
38 -- ** Manipulating DynFlags
39 defaultDynFlags, -- DynFlags
40 initDynFlags, -- DynFlags -> IO DynFlags
42 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
49 -- ** Parsing DynFlags
51 parseDynamicNoPackageFlags,
54 supportedLanguagesAndExtensions,
56 -- ** DynFlag C compiler options
57 machdepCCOpts, picCCOpts,
59 -- * Configuration of the stg-to-stg passes
63 -- * Compiler configuration suitable for display to the user
67 -- Only in stage 2 can we be sure that the RTS
68 -- exposes the appropriate runtime boolean
73 #include "HsVersions.h"
75 #ifndef OMIT_NATIVE_CODEGEN
80 import PrelNames ( mAIN )
82 import {-# SOURCE #-} Packages (PackageState)
83 import DriverPhases ( Phase(..), phaseInputExt )
86 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
89 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 Data.Map (Map)
103 import qualified Data.Map as Map
104 import System.FilePath
105 import System.IO ( stderr, hPutChar )
107 -- -----------------------------------------------------------------------------
110 -- | Enumerates the simple on-or-off dynamic flags
116 | Opt_D_dump_cmmz_pretty
120 | Opt_D_dump_asm_native
121 | Opt_D_dump_asm_liveness
122 | Opt_D_dump_asm_coalesce
123 | Opt_D_dump_asm_regalloc
124 | Opt_D_dump_asm_regalloc_stages
125 | Opt_D_dump_asm_conflicts
126 | Opt_D_dump_asm_stats
127 | Opt_D_dump_asm_expanded
134 | Opt_D_dump_inlinings
135 | Opt_D_dump_rule_firings
136 | Opt_D_dump_occur_anal
140 | Opt_D_dump_simpl_iterations
141 | Opt_D_dump_simpl_phases
150 | Opt_D_dump_worker_wrapper
151 | Opt_D_dump_rn_trace
152 | Opt_D_dump_rn_stats
154 | Opt_D_dump_simpl_stats
155 | Opt_D_dump_tc_trace
156 | Opt_D_dump_if_trace
163 | Opt_D_verbose_core2core
164 | Opt_D_verbose_stg2stg
166 | Opt_D_dump_hi_diffs
167 | Opt_D_dump_minimal_imports
168 | Opt_D_dump_mod_cycles
169 | Opt_D_dump_view_pattern_commoning
170 | Opt_D_faststring_stats
171 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
172 | Opt_D_no_debug_output
178 | Opt_WarnIsError -- -Werror; makes warnings fatal
179 | Opt_WarnDuplicateExports
181 | Opt_WarnImplicitPrelude
182 | Opt_WarnIncompletePatterns
183 | Opt_WarnIncompletePatternsRecUpd
184 | Opt_WarnMissingFields
185 | Opt_WarnMissingImportList
186 | Opt_WarnMissingMethods
187 | Opt_WarnMissingSigs
188 | Opt_WarnMissingLocalSigs
189 | Opt_WarnNameShadowing
190 | Opt_WarnOverlappingPatterns
191 | Opt_WarnTypeDefaults
192 | Opt_WarnMonomorphism
193 | Opt_WarnUnusedBinds
194 | Opt_WarnUnusedImports
195 | Opt_WarnUnusedMatches
196 | Opt_WarnWarningsDeprecations
197 | Opt_WarnDeprecatedFlags
198 | Opt_WarnDodgyExports
199 | Opt_WarnDodgyImports
201 | Opt_WarnAutoOrphans
204 | Opt_WarnUnrecognisedPragmas
205 | Opt_WarnDodgyForeignImports
206 | Opt_WarnLazyUnliftedBindings
207 | Opt_WarnUnusedDoBind
208 | Opt_WarnWrongDoBind
209 | Opt_WarnAlternativeLayoutRuleTransitional
211 | Opt_PrintExplicitForalls
218 | Opt_StaticArgumentTransformation
222 | Opt_DoLambdaEtaExpansion
226 | Opt_UnboxStrictFields
227 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
229 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
231 | Opt_RegsGraph -- do graph coloring register allocation
232 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
235 | Opt_IgnoreInterfacePragmas
236 | Opt_OmitInterfacePragmas
237 | Opt_ExposeAllUnfoldings
240 | Opt_AutoSccsOnAllToplevs
241 | Opt_AutoSccsOnExportedToplevs
242 | Opt_AutoSccsOnIndividualCafs
249 | Opt_ExcessPrecision
250 | Opt_EagerBlackHoling
251 | Opt_ReadUserPackageConf
255 | Opt_HideAllPackages
256 | Opt_PrintBindResult
260 | Opt_BreakOnException
262 | Opt_PrintEvldWithShow
263 | Opt_PrintBindContents
266 | Opt_EmitExternalCore
268 | Opt_BuildingCabalPackage
275 | Opt_ConvertToZipCfgAndBack
276 | Opt_AutoLinkPackages
277 | Opt_ImplicitImportQualified
286 | Opt_KeepRawTokenStream
291 data Language = Haskell98 | Haskell2010
295 | Opt_OverlappingInstances
296 | Opt_UndecidableInstances
297 | Opt_IncoherentInstances
298 | Opt_MonomorphismRestriction
301 | Opt_RelaxedPolyRec -- Deprecated
302 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
303 | Opt_ForeignFunctionInterface
304 | Opt_UnliftedFFITypes
305 | Opt_GHCForeignImportPrim
306 | Opt_PArr -- Syntactic support for parallel arrays
307 | Opt_Arrows -- Arrow-notation syntax
308 | Opt_TemplateHaskell
311 | Opt_Generics -- "Derivable type classes"
312 | Opt_ImplicitPrelude
313 | Opt_ScopedTypeVariables
317 | Opt_OverloadedStrings
318 | Opt_DisambiguateRecordFields
319 | Opt_RecordWildCards
324 | Opt_DoAndIfThenElse
325 | Opt_RebindableSyntax
327 | Opt_StandaloneDeriving
328 | Opt_DeriveDataTypeable
330 | Opt_DeriveTraversable
333 | Opt_TypeSynonymInstances
334 | Opt_FlexibleContexts
335 | Opt_FlexibleInstances
336 | Opt_ConstrainedClassMethods
337 | Opt_MultiParamTypeClasses
338 | Opt_FunctionalDependencies
340 | Opt_PolymorphicComponents
341 | Opt_ExistentialQuantification
345 | Opt_ParallelListComp
346 | Opt_TransformListComp
347 | Opt_GeneralizedNewtypeDeriving
350 | Opt_PostfixOperators
353 | Opt_LiberalTypeSynonyms
356 | Opt_ImpredicativeTypes
359 | Opt_NewQualifiedOperators
361 | Opt_AlternativeLayoutRule
362 | Opt_AlternativeLayoutRuleTransitional
363 | Opt_DatatypeContexts
367 -- | Contains not only a collection of 'DynFlag's but also a plethora of
368 -- information relating to the compilation of a single file or GHC session
369 data DynFlags = DynFlags {
372 hscTarget :: HscTarget,
373 hscOutName :: String, -- ^ Name of the output file
374 extCoreName :: String, -- ^ Name of the .hcr output file
375 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
376 optLevel :: Int, -- ^ Optimisation level
377 simplPhases :: Int, -- ^ Number of simplifier phases
378 maxSimplIterations :: Int, -- ^ Max simplifier iterations
379 shouldDumpSimplPhase :: Maybe String,
380 ruleCheck :: Maybe String,
381 strictnessBefore :: [Int], -- ^ Additional demand analysis
383 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
384 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
385 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
386 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
387 -- See CoreMonad.FloatOutSwitches
389 #ifndef OMIT_NATIVE_CODEGEN
390 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
392 stolen_x86_regs :: Int,
393 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
394 importPaths :: [FilePath],
396 mainFunIs :: Maybe String,
397 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
399 dphBackend :: DPHBackend,
401 thisPackage :: PackageId, -- ^ name of package currently being compiled
404 ways :: [Way], -- ^ Way flags from the command line
405 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
406 rtsBuildTag :: String, -- ^ The RTS \"way\"
408 -- For object splitting
409 splitInfo :: Maybe (String,Int),
412 objectDir :: Maybe String,
413 dylibInstallName :: Maybe String,
414 hiDir :: Maybe String,
415 stubDir :: Maybe String,
421 outputFile :: Maybe String,
422 outputHi :: Maybe String,
423 dynLibLoader :: DynLibLoader,
425 -- | This is set by 'DriverPipeline.runPipeline' based on where
426 -- its output is going.
427 dumpPrefix :: Maybe FilePath,
429 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
430 -- Set by @-ddump-file-prefix@
431 dumpPrefixForce :: Maybe FilePath,
433 includePaths :: [String],
434 libraryPaths :: [String],
435 frameworkPaths :: [String], -- used on darwin only
436 cmdlineFrameworks :: [String], -- ditto
437 tmpDir :: String, -- no trailing '/'
439 ghcUsagePath :: FilePath, -- Filled in by SysTools
440 ghciUsagePath :: FilePath, -- ditto
441 rtsOpts :: Maybe String,
442 rtsOptsEnabled :: RtsOptsEnabled,
444 hpcDir :: String, -- ^ Path to store the .mix files
446 -- options for particular phases
454 opt_windres :: [String],
455 opt_lo :: [String], -- LLVM: llvm optimiser
456 opt_lc :: [String], -- LLVM: llc static compiler
458 -- commands for particular phases
460 pgm_P :: (String,[Option]),
462 pgm_c :: (String,[Option]),
463 pgm_m :: (String,[Option]),
464 pgm_s :: (String,[Option]),
465 pgm_a :: (String,[Option]),
466 pgm_l :: (String,[Option]),
467 pgm_dll :: (String,[Option]),
469 pgm_sysman :: String,
470 pgm_windres :: String,
471 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
472 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
475 depMakefile :: FilePath,
476 depIncludePkgDeps :: Bool,
477 depExcludeMods :: [ModuleName],
478 depSuffixes :: [String],
481 extraPkgConfs :: [FilePath],
482 topDir :: FilePath, -- filled in by SysTools
483 systemPackageConfig :: FilePath, -- ditto
484 -- ^ The @-package-conf@ flags given on the command line, in the order
487 packageFlags :: [PackageFlag],
488 -- ^ The @-package@ and @-hide-package@ flags from the command-line
491 -- NB. do not modify this field, it is calculated by
492 -- Packages.initPackages and Packages.updatePackages.
493 pkgDatabase :: Maybe [PackageConfig],
494 pkgState :: PackageState,
497 -- These have to be IORefs, because the defaultCleanupHandler needs to
498 -- know what to clean when an exception happens
499 filesToClean :: IORef [FilePath],
500 dirsToClean :: IORef (Map FilePath FilePath),
504 -- Don't change this without updating extensionFlags:
505 language :: Maybe Language,
506 -- Don't change this without updating extensionFlags:
507 extensions :: [OnOff ExtensionFlag],
508 -- extensionFlags should always be equal to
509 -- flattenExtensionFlags language extensions
510 extensionFlags :: [ExtensionFlag],
512 -- | Message output action: use "ErrUtils" instead of this if you can
513 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
515 haddockOptions :: Maybe String
518 wayNames :: DynFlags -> [WayName]
519 wayNames = map wayName . ways
521 -- | The target code type of the compilation (if any).
523 -- Whenever you change the target, also make sure to set 'ghcLink' to
524 -- something sensible.
526 -- 'HscNothing' can be used to avoid generating any output, however, note
529 -- * This will not run the desugaring step, thus no warnings generated in
530 -- this step will be output. In particular, this includes warnings related
531 -- to pattern matching. You can run the desugarer manually using
532 -- 'GHC.desugarModule'.
534 -- * If a program uses Template Haskell the typechecker may try to run code
535 -- from an imported module. This will fail if no code has been generated
536 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
537 -- whether this might be the case and choose to either switch to a
538 -- different target or avoid typechecking such modules. (The latter may
539 -- preferable for security reasons.)
542 = HscC -- ^ Generate C code.
543 | HscAsm -- ^ Generate assembly using the native code generator.
544 | HscLlvm -- ^ Generate assembly using the llvm code generator.
545 | HscJava -- ^ Generate Java bytecode.
546 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
547 | HscNothing -- ^ Don't generate any code. See notes above.
550 -- | Will this target result in an object file on the disk?
551 isObjectTarget :: HscTarget -> Bool
552 isObjectTarget HscC = True
553 isObjectTarget HscAsm = True
554 isObjectTarget HscLlvm = True
555 isObjectTarget _ = False
557 -- | The 'GhcMode' tells us whether we're doing multi-module
558 -- compilation (controlled via the "GHC" API) or one-shot
559 -- (single-module) compilation. This makes a difference primarily to
560 -- the "Finder": in one-shot mode we look for interface files for
561 -- imported modules, but in multi-module mode we look for source files
562 -- in order to check whether they need to be recompiled.
564 = CompManager -- ^ @\-\-make@, GHCi, etc.
565 | OneShot -- ^ @ghc -c Foo.hs@
566 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
569 instance Outputable GhcMode where
570 ppr CompManager = ptext (sLit "CompManager")
571 ppr OneShot = ptext (sLit "OneShot")
572 ppr MkDepend = ptext (sLit "MkDepend")
574 isOneShot :: GhcMode -> Bool
575 isOneShot OneShot = True
576 isOneShot _other = False
578 -- | What to do in the link step, if there is one.
580 = NoLink -- ^ Don't link at all
581 | LinkBinary -- ^ Link object code into a binary
582 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
583 -- bytecode and object code).
584 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
587 isNoLink :: GhcLink -> Bool
588 isNoLink NoLink = True
591 -- Is it worth evaluating this Bool and caching it in the DynFlags value
592 -- during initDynFlags?
593 doingTickyProfiling :: DynFlags -> Bool
594 doingTickyProfiling _ = opt_Ticky
595 -- XXX -ticky is a static flag, because it implies -debug which is also
596 -- static. If the way flags were made dynamic, we could fix this.
599 = ExposePackage String
600 | ExposePackageId String
602 | IgnorePackage String
605 defaultHscTarget :: HscTarget
606 defaultHscTarget = defaultObjectTarget
608 -- | The 'HscTarget' value corresponding to the default way to create
609 -- object files on the current platform.
610 defaultObjectTarget :: HscTarget
612 | cGhcWithNativeCodeGen == "YES" = HscAsm
620 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
622 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
623 initDynFlags :: DynFlags -> IO DynFlags
624 initDynFlags dflags = do
625 -- someday these will be dynamic flags
626 ways <- readIORef v_Ways
627 refFilesToClean <- newIORef []
628 refDirsToClean <- newIORef Map.empty
631 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
632 rtsBuildTag = mkBuildTag ways,
633 filesToClean = refFilesToClean,
634 dirsToClean = refDirsToClean
637 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
638 -- and must be fully initialized by 'GHC.newSession' first.
639 defaultDynFlags :: DynFlags
642 ghcMode = CompManager,
643 ghcLink = LinkBinary,
644 hscTarget = defaultHscTarget,
650 maxSimplIterations = 4,
651 shouldDumpSimplPhase = Nothing,
653 specConstrThreshold = Just 200,
654 specConstrCount = Just 3,
655 liberateCaseThreshold = Just 200,
656 floatLamArgs = Just 0, -- Default: float only if no fvs
657 strictnessBefore = [],
659 #ifndef OMIT_NATIVE_CODEGEN
660 targetPlatform = defaultTargetPlatform,
663 cmdlineHcIncludes = [],
667 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
671 thisPackage = mainPackageId,
674 dylibInstallName = Nothing,
678 objectSuf = phaseInputExt StopLn,
679 hcSuf = phaseInputExt HCc,
682 outputFile = Nothing,
684 dynLibLoader = SystemDependent,
685 dumpPrefix = Nothing,
686 dumpPrefixForce = Nothing,
690 cmdlineFrameworks = [],
691 tmpDir = cDEFAULT_TMPDIR,
693 rtsOptsEnabled = RtsOptsSafeOnly,
699 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
712 pkgDatabase = Nothing,
713 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
714 ways = panic "defaultDynFlags: No ways",
715 buildTag = panic "defaultDynFlags: No buildTag",
716 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
718 -- initSysTools fills all these in
719 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
720 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
721 topDir = panic "defaultDynFlags: No topDir",
722 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
723 pgm_L = panic "defaultDynFlags: No pgm_L",
724 pgm_P = panic "defaultDynFlags: No pgm_P",
725 pgm_F = panic "defaultDynFlags: No pgm_F",
726 pgm_c = panic "defaultDynFlags: No pgm_c",
727 pgm_m = panic "defaultDynFlags: No pgm_m",
728 pgm_s = panic "defaultDynFlags: No pgm_s",
729 pgm_a = panic "defaultDynFlags: No pgm_a",
730 pgm_l = panic "defaultDynFlags: No pgm_l",
731 pgm_dll = panic "defaultDynFlags: No pgm_dll",
732 pgm_T = panic "defaultDynFlags: No pgm_T",
733 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
734 pgm_windres = panic "defaultDynFlags: No pgm_windres",
735 pgm_lo = panic "defaultDynFlags: No pgm_lo",
736 pgm_lc = panic "defaultDynFlags: No pgm_lc",
737 -- end of initSysTools values
739 depMakefile = "Makefile",
740 depIncludePkgDeps = False,
743 -- end of ghc -M values
744 filesToClean = panic "defaultDynFlags: No filesToClean",
745 dirsToClean = panic "defaultDynFlags: No dirsToClean",
746 haddockOptions = Nothing,
747 flags = defaultFlags,
750 extensionFlags = flattenExtensionFlags Nothing [],
752 log_action = \severity srcSpan style msg ->
754 SevOutput -> printOutput (msg style)
755 SevInfo -> printErrs (msg style)
756 SevFatal -> printErrs (msg style)
759 printErrs ((mkLocMessage srcSpan msg) style)
760 -- careful (#2302): printErrs prints in UTF-8, whereas
761 -- converting to string first and using hPutStr would
762 -- just emit the low 8 bits of each unicode char.
766 Note [Verbosity levels]
767 ~~~~~~~~~~~~~~~~~~~~~~~
768 0 | print errors & warnings only
769 1 | minimal verbosity: print "compiling M ... done." for each module.
770 2 | equivalent to -dshow-passes
771 3 | equivalent to existing "ghc -v"
772 4 | "ghc -v -ddump-most"
773 5 | "ghc -v -ddump-all"
779 -- OnOffs accumulate in reverse order, so we use foldr in order to
780 -- process them in the right order
781 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
783 flattenExtensionFlags ml = foldr f defaultExtensionFlags
784 where f (On f) flags = f : delete f flags
785 f (Off f) flags = delete f flags
786 defaultExtensionFlags = languageExtensions ml
788 languageExtensions :: Maybe Language -> [ExtensionFlag]
790 languageExtensions Nothing
791 -- Nothing => the default case
792 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
793 -- behaviour the default, to see if anyone notices
795 -- In due course I'd like Opt_MonoLocalBinds to be on by default
796 -- But NB it's implied by GADTs etc
797 -- SLPJ September 2010
798 : Opt_RelaxedLayout -- This has been on by default for some time
799 : languageExtensions (Just Haskell2010)
801 languageExtensions (Just Haskell98)
802 = [Opt_ImplicitPrelude,
803 Opt_MonomorphismRestriction,
805 Opt_DatatypeContexts]
807 languageExtensions (Just Haskell2010)
808 = [Opt_ImplicitPrelude,
809 Opt_MonomorphismRestriction,
810 Opt_DatatypeContexts,
812 Opt_ForeignFunctionInterface,
817 -- | Test whether a 'DynFlag' is set
818 dopt :: DynFlag -> DynFlags -> Bool
819 dopt f dflags = f `elem` (flags dflags)
822 dopt_set :: DynFlags -> DynFlag -> DynFlags
823 dopt_set dfs f = dfs{ flags = f : flags dfs }
825 -- | Unset a 'DynFlag'
826 dopt_unset :: DynFlags -> DynFlag -> DynFlags
827 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
829 -- | Test whether a 'ExtensionFlag' is set
830 xopt :: ExtensionFlag -> DynFlags -> Bool
831 xopt f dflags = f `elem` extensionFlags dflags
833 -- | Set a 'ExtensionFlag'
834 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
836 = let onoffs = On f : extensions dfs
837 in dfs { extensions = onoffs,
838 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
840 -- | Unset a 'ExtensionFlag'
841 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
843 = let onoffs = Off f : extensions dfs
844 in dfs { extensions = onoffs,
845 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
847 setLanguage :: Language -> DynP ()
848 setLanguage l = upd f
849 where f dfs = let mLang = Just l
850 oneoffs = extensions dfs
853 extensionFlags = flattenExtensionFlags mLang oneoffs
856 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
857 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
858 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
859 -> [a] -- ^ Correctly ordered extracted options
860 getOpts dflags opts = reverse (opts dflags)
861 -- We add to the options from the front, so we need to reverse the list
863 -- | Gets the verbosity flag for the current verbosity level. This is fed to
864 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
865 getVerbFlag :: DynFlags -> String
867 | verbosity dflags >= 3 = "-v"
870 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
871 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
872 setPgmP, addOptl, addOptP,
873 addCmdlineFramework, addHaddockOpts
874 :: String -> DynFlags -> DynFlags
875 setOutputFile, setOutputHi, setDumpPrefixForce
876 :: Maybe String -> DynFlags -> DynFlags
878 setObjectDir f d = d{ objectDir = Just f}
879 setHiDir f d = d{ hiDir = Just f}
880 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
881 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
882 -- \#included from the .hc file when compiling with -fvia-C.
883 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
884 setDylibInstallName f d = d{ dylibInstallName = Just f}
886 setObjectSuf f d = d{ objectSuf = f}
887 setHiSuf f d = d{ hiSuf = f}
888 setHcSuf f d = d{ hcSuf = f}
890 setOutputFile f d = d{ outputFile = f}
891 setOutputHi f d = d{ outputHi = f}
893 parseDynLibLoaderMode f d =
895 ("deploy", "") -> d{ dynLibLoader = Deployable }
896 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
897 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
899 setDumpPrefixForce f d = d { dumpPrefixForce = f}
901 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
902 -- Config.hs should really use Option.
903 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
904 addOptl f d = d{ opt_l = f : opt_l d}
905 addOptP f d = d{ opt_P = f : opt_P d}
908 setDepMakefile :: FilePath -> DynFlags -> DynFlags
909 setDepMakefile f d = d { depMakefile = deOptDep f }
911 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
912 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
914 addDepExcludeMod :: String -> DynFlags -> DynFlags
916 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
918 addDepSuffix :: FilePath -> DynFlags -> DynFlags
919 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
922 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
923 -- we need to strip the "-optdep" off of the arg
924 deOptDep :: String -> String
925 deOptDep x = case stripPrefix "-optdep" x of
929 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
931 addHaddockOpts f d = d{ haddockOptions = Just f}
933 -- -----------------------------------------------------------------------------
934 -- Command-line options
936 -- | When invoking external tools as part of the compilation pipeline, we
937 -- pass these a sequence of options on the command-line. Rather than
938 -- just using a list of Strings, we use a type that allows us to distinguish
939 -- between filepaths and 'other stuff'. The reason for this is that
940 -- this type gives us a handle on transforming filenames, and filenames only,
941 -- to whatever format they're expected to be on a particular platform.
943 = FileOption -- an entry that _contains_ filename(s) / filepaths.
944 String -- a non-filepath prefix that shouldn't be
945 -- transformed (e.g., "/out=")
946 String -- the filepath/filename portion
949 showOpt :: Option -> String
950 showOpt (FileOption pre f) = pre ++ f
951 showOpt (Option s) = s
953 -----------------------------------------------------------------------------
954 -- Setting the optimisation level
956 updOptLevel :: Int -> DynFlags -> DynFlags
957 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
959 = dfs2{ optLevel = final_n }
961 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
962 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
963 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
965 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
966 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
968 -- -----------------------------------------------------------------------------
969 -- StgToDo: abstraction of stg-to-stg passes to run.
972 = StgDoMassageForProfiling -- should be (next to) last
973 -- There's also setStgVarInfo, but its absolute "lastness"
974 -- is so critical that it is hardwired in (no flag).
977 getStgToDo :: DynFlags -> [StgToDo]
981 stg_stats = dopt Opt_StgStats dflags
983 todo1 = if stg_stats then [D_stg_stats] else []
985 todo2 | WayProf `elem` wayNames dflags
986 = StgDoMassageForProfiling : todo1
990 {- **********************************************************************
994 %********************************************************************* -}
996 -- -----------------------------------------------------------------------------
997 -- Parsing the dynamic flags.
999 -- | Parse dynamic flags from a list of command line arguments. Returns the
1000 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1001 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1002 -- flags or missing arguments).
1003 parseDynamicFlags :: Monad m =>
1004 DynFlags -> [Located String]
1005 -> m (DynFlags, [Located String], [Located String])
1006 -- ^ Updated 'DynFlags', left-over arguments, and
1007 -- list of warnings.
1008 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1010 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1011 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1012 parseDynamicNoPackageFlags :: Monad m =>
1013 DynFlags -> [Located String]
1014 -> m (DynFlags, [Located String], [Located String])
1015 -- ^ Updated 'DynFlags', left-over arguments, and
1016 -- list of warnings.
1017 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1019 parseDynamicFlags_ :: Monad m =>
1020 DynFlags -> [Located String] -> Bool
1021 -> m (DynFlags, [Located String], [Located String])
1022 parseDynamicFlags_ dflags0 args pkg_flags = do
1023 -- XXX Legacy support code
1024 -- We used to accept things like
1025 -- optdep-f -optdepdepend
1026 -- optdep-f -optdep depend
1027 -- optdep -f -optdepdepend
1028 -- optdep -f -optdep depend
1029 -- but the spaces trip up proper argument handling. So get rid of them.
1030 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1031 f (x : xs) = x : f xs
1035 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1036 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1037 | otherwise = dynamic_flags
1039 let ((leftover, errs, warns), dflags1)
1040 = runCmdLine (processArgs flag_spec args') dflags0
1041 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1043 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1044 -- isn't up to the job. We know that if hscTarget == HscC, then the
1045 -- user has explicitly used -fvia-C, because -fasm is the default,
1046 -- unless there is no NCG on this platform. The latter case is
1047 -- checked when the -fPIC flag is parsed.
1049 let (pic_warns, dflags2)
1050 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1051 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1052 dflags1{ hscTarget = HscAsm })
1053 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1054 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1055 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1056 ++ "dynamic on this platform;\n ignoring -fllvm"],
1057 dflags1{ hscTarget = HscAsm })
1059 | otherwise = ([], dflags1)
1061 return (dflags2, leftover, pic_warns ++ warns)
1064 {- **********************************************************************
1066 DynFlags specifications
1068 %********************************************************************* -}
1070 allFlags :: [String]
1071 allFlags = map ('-':) $
1072 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1073 map ("fno-"++) flags ++
1074 map ("f"++) flags ++
1075 map ("f"++) flags' ++
1076 map ("X"++) supportedExtensions
1077 where ok (PrefixPred _ _) = False
1079 flags = [ name | (name, _, _) <- fFlags ]
1080 flags' = [ name | (name, _, _) <- fLangFlags ]
1082 --------------- The main flags themselves ------------------
1083 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1085 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1086 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1087 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1089 (HasArg (\s -> do { addCmdlineHCInclude s
1090 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1091 , Flag "v" (OptIntSuffix setVerbosity)
1093 ------- Specific phases --------------------------------------------
1094 -- need to appear before -pgmL to be parsed as LLVM flags.
1095 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1096 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1097 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1098 , Flag "pgmP" (hasArg setPgmP)
1099 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1100 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1101 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1102 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1103 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1104 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1105 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1106 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1108 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1109 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1110 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1111 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1112 , Flag "optP" (hasArg addOptP)
1113 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1114 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1115 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1116 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1117 , Flag "optl" (hasArg addOptl)
1118 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1121 (NoArg (if can_split
1122 then setDynFlag Opt_SplitObjs
1123 else addWarn "ignoring -fsplit-objs"))
1125 -------- ghc -M -----------------------------------------------------
1126 , Flag "dep-suffix" (hasArg addDepSuffix)
1127 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1128 , Flag "dep-makefile" (hasArg setDepMakefile)
1129 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1130 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1131 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1132 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1133 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1134 , Flag "exclude-module" (hasArg addDepExcludeMod)
1135 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1136 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1138 -------- Linking ----------------------------------------------------
1139 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1140 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1141 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1142 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1144 ------- Libraries ---------------------------------------------------
1145 , Flag "L" (Prefix addLibraryPath)
1146 , Flag "l" (AnySuffix (upd . addOptl))
1148 ------- Frameworks --------------------------------------------------
1149 -- -framework-path should really be -F ...
1150 , Flag "framework-path" (HasArg addFrameworkPath)
1151 , Flag "framework" (hasArg addCmdlineFramework)
1153 ------- Output Redirection ------------------------------------------
1154 , Flag "odir" (hasArg setObjectDir)
1155 , Flag "o" (SepArg (upd . setOutputFile . Just))
1156 , Flag "ohi" (hasArg (setOutputHi . Just ))
1157 , Flag "osuf" (hasArg setObjectSuf)
1158 , Flag "hcsuf" (hasArg setHcSuf)
1159 , Flag "hisuf" (hasArg setHiSuf)
1160 , Flag "hidir" (hasArg setHiDir)
1161 , Flag "tmpdir" (hasArg setTmpDir)
1162 , Flag "stubdir" (hasArg setStubDir)
1163 , Flag "outputdir" (hasArg setOutputDir)
1164 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1166 ------- Keeping temporary files -------------------------------------
1167 -- These can be singular (think ghc -c) or plural (think ghc --make)
1168 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1169 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1170 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1171 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1172 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1173 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1174 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1175 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1176 -- This only makes sense as plural
1177 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1179 ------- Miscellaneous ----------------------------------------------
1180 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1181 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1182 , Flag "with-rtsopts" (HasArg setRtsOpts)
1183 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1184 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1185 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1186 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1187 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1188 , Flag "main-is" (SepArg setMainIs)
1189 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1190 , Flag "haddock-opts" (hasArg addHaddockOpts)
1191 , Flag "hpcdir" (SepArg setOptHpcDir)
1193 ------- recompilation checker --------------------------------------
1194 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1195 ; deprecate "Use -fno-force-recomp instead" }))
1196 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1197 ; deprecate "Use -fforce-recomp instead" }))
1199 ------ HsCpp opts ---------------------------------------------------
1200 , Flag "D" (AnySuffix (upd . addOptP))
1201 , Flag "U" (AnySuffix (upd . addOptP))
1203 ------- Include/Import Paths ----------------------------------------
1204 , Flag "I" (Prefix addIncludePath)
1205 , Flag "i" (OptPrefix addImportPath)
1207 ------ Debugging ----------------------------------------------------
1208 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1210 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1211 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1212 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1213 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1214 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1215 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1216 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1217 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1218 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1219 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1220 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1221 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1222 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1223 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1224 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1225 ; setDumpFlag' Opt_D_dump_llvm}))
1226 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1227 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1228 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1229 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1230 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1231 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1232 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1233 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1234 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1235 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1236 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1237 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1238 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1239 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1240 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1241 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1242 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1243 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1244 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1245 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1246 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1247 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1248 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1249 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1250 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1251 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1252 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1253 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1254 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1255 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1256 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1257 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1258 ; setVerboseCore2Core }))
1259 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1260 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1261 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1262 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1263 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1264 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1265 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1266 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1267 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1268 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1269 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1270 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1271 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1272 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1273 , Flag "dshow-passes" (NoArg (do forceRecompile
1274 setVerbosity (Just 2)))
1275 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1277 ------ Machine dependant (-m<blah>) stuff ---------------------------
1279 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1280 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1281 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1282 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1284 ------ Warning opts -------------------------------------------------
1285 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1286 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1287 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1288 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1289 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1290 ; deprecate "Use -w instead" }))
1291 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1293 ------ Optimisation flags ------------------------------------------
1294 , Flag "O" (noArg (setOptLevel 1))
1295 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1296 , Flag "Odph" (noArg setDPHOpt)
1297 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1298 -- If the number is missing, use 1
1300 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1301 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1302 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1303 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1304 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1305 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1306 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1307 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1308 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1309 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1310 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1311 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1312 , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
1314 ------ Profiling ----------------------------------------------------
1316 -- XXX Should the -f* flags be deprecated?
1317 -- They don't seem to be documented
1318 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1319 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1320 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1321 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1322 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1323 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1324 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1325 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1326 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1328 ------ DPH flags ----------------------------------------------------
1330 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1331 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1332 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1334 ------ Compiler flags -----------------------------------------------
1336 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1337 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1338 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1339 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1340 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1341 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1343 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1344 setTarget HscNothing))
1345 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1346 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1347 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1348 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1350 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1351 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1352 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1353 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1354 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1355 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1356 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1358 package_flags :: [Flag (CmdLineP DynFlags)]
1360 ------- Packages ----------------------------------------------------
1361 Flag "package-conf" (HasArg extraPkgConf_)
1362 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1363 , Flag "package-name" (hasArg setPackageName)
1364 , Flag "package-id" (HasArg exposePackageId)
1365 , Flag "package" (HasArg exposePackage)
1366 , Flag "hide-package" (HasArg hidePackage)
1367 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1368 , Flag "ignore-package" (HasArg ignorePackage)
1369 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1370 ; deprecate "Use -package instead" }))
1373 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1374 -- False <=> we are turning the flag off
1375 turnOn :: TurnOnFlag; turnOn = True
1376 turnOff :: TurnOnFlag; turnOff = False
1379 = ( String -- Flag in string form
1380 , flag -- Flag in internal form
1381 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1382 -- Typically, emit a warning or error
1384 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1385 -> String -- ^ The flag prefix
1386 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1387 -> FlagSpec flag -- ^ Specification of this particular flag
1388 -> Flag (CmdLineP DynFlags)
1389 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1390 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1392 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1393 deprecatedForExtension lang turn_on
1394 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1396 flag | turn_on = lang
1397 | otherwise = "No"++lang
1399 useInstead :: String -> TurnOnFlag -> DynP ()
1400 useInstead flag turn_on
1401 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1403 no = if turn_on then "" else "no-"
1405 nop :: TurnOnFlag -> DynP ()
1408 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1409 fFlags :: [FlagSpec DynFlag]
1411 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1412 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1413 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1414 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1415 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1416 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1417 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1418 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1419 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1420 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1421 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1422 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1423 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1424 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1425 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1426 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1427 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1428 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1429 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1430 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1431 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1432 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1433 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1434 ( "warn-orphans", Opt_WarnOrphans, nop ),
1435 ( "warn-identities", Opt_WarnIdentities, nop ),
1436 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1437 ( "warn-tabs", Opt_WarnTabs, nop ),
1438 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1439 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1440 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1441 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1442 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1443 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1444 ( "strictness", Opt_Strictness, nop ),
1445 ( "specialise", Opt_Specialise, nop ),
1446 ( "float-in", Opt_FloatIn, nop ),
1447 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1448 ( "full-laziness", Opt_FullLaziness, nop ),
1449 ( "liberate-case", Opt_LiberateCase, nop ),
1450 ( "spec-constr", Opt_SpecConstr, nop ),
1451 ( "cse", Opt_CSE, nop ),
1452 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1453 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1454 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1455 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1456 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1457 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1458 ( "case-merge", Opt_CaseMerge, nop ),
1459 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1460 ( "method-sharing", Opt_MethodSharing,
1461 \_ -> deprecate "doesn't do anything any more"),
1462 -- Remove altogether in GHC 7.2
1463 ( "dicts-cheap", Opt_DictsCheap, nop ),
1464 ( "excess-precision", Opt_ExcessPrecision, nop ),
1465 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1466 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1467 ( "print-bind-result", Opt_PrintBindResult, nop ),
1468 ( "force-recomp", Opt_ForceRecomp, nop ),
1469 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1470 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1471 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1472 ( "break-on-exception", Opt_BreakOnException, nop ),
1473 ( "break-on-error", Opt_BreakOnError, nop ),
1474 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1475 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1476 ( "run-cps", Opt_RunCPS, nop ),
1477 ( "run-cpsz", Opt_RunCPSZ, nop ),
1478 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1479 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1480 ( "vectorise", Opt_Vectorise, nop ),
1481 ( "regs-graph", Opt_RegsGraph, nop ),
1482 ( "regs-iterative", Opt_RegsIterative, nop ),
1483 ( "gen-manifest", Opt_GenManifest, nop ),
1484 ( "embed-manifest", Opt_EmbedManifest, nop ),
1485 ( "ext-core", Opt_EmitExternalCore, nop ),
1486 ( "shared-implib", Opt_SharedImplib, nop ),
1487 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1488 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1489 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1492 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1493 fLangFlags :: [FlagSpec ExtensionFlag]
1495 ( "th", Opt_TemplateHaskell,
1496 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1497 ( "fi", Opt_ForeignFunctionInterface,
1498 deprecatedForExtension "ForeignFunctionInterface" ),
1499 ( "ffi", Opt_ForeignFunctionInterface,
1500 deprecatedForExtension "ForeignFunctionInterface" ),
1501 ( "arrows", Opt_Arrows,
1502 deprecatedForExtension "Arrows" ),
1503 ( "generics", Opt_Generics,
1504 deprecatedForExtension "Generics" ),
1505 ( "implicit-prelude", Opt_ImplicitPrelude,
1506 deprecatedForExtension "ImplicitPrelude" ),
1507 ( "bang-patterns", Opt_BangPatterns,
1508 deprecatedForExtension "BangPatterns" ),
1509 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1510 deprecatedForExtension "MonomorphismRestriction" ),
1511 ( "mono-pat-binds", Opt_MonoPatBinds,
1512 deprecatedForExtension "MonoPatBinds" ),
1513 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1514 deprecatedForExtension "ExtendedDefaultRules" ),
1515 ( "implicit-params", Opt_ImplicitParams,
1516 deprecatedForExtension "ImplicitParams" ),
1517 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1518 deprecatedForExtension "ScopedTypeVariables" ),
1520 deprecatedForExtension "PArr" ),
1521 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1522 deprecatedForExtension "OverlappingInstances" ),
1523 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1524 deprecatedForExtension "UndecidableInstances" ),
1525 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1526 deprecatedForExtension "IncoherentInstances" )
1529 supportedLanguages :: [String]
1530 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1532 supportedExtensions :: [String]
1533 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1535 supportedLanguagesAndExtensions :: [String]
1536 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1538 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1539 languageFlags :: [FlagSpec Language]
1541 ( "Haskell98", Haskell98, nop ),
1542 ( "Haskell2010", Haskell2010, nop )
1545 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1546 xFlags :: [FlagSpec ExtensionFlag]
1548 ( "CPP", Opt_Cpp, nop ),
1549 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1550 ( "TupleSections", Opt_TupleSections, nop ),
1551 ( "PatternGuards", Opt_PatternGuards, nop ),
1552 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1553 ( "MagicHash", Opt_MagicHash, nop ),
1554 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1555 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1556 ( "KindSignatures", Opt_KindSignatures, nop ),
1557 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1558 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1559 ( "TransformListComp", Opt_TransformListComp, nop ),
1560 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1561 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1562 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1563 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1564 ( "Rank2Types", Opt_Rank2Types, nop ),
1565 ( "RankNTypes", Opt_RankNTypes, nop ),
1566 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1567 ( "TypeOperators", Opt_TypeOperators, nop ),
1568 ( "RecursiveDo", Opt_RecursiveDo,
1569 deprecatedForExtension "DoRec"),
1570 ( "DoRec", Opt_DoRec, nop ),
1571 ( "Arrows", Opt_Arrows, nop ),
1572 ( "PArr", Opt_PArr, nop ),
1573 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1574 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1575 ( "Generics", Opt_Generics, nop ),
1576 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1577 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1578 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1579 ( "RecordPuns", Opt_RecordPuns,
1580 deprecatedForExtension "NamedFieldPuns" ),
1581 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1582 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1583 ( "GADTs", Opt_GADTs, nop ),
1584 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1585 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1586 ( "BangPatterns", Opt_BangPatterns, nop ),
1587 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1588 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1589 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1590 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1591 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1592 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1593 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1594 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1595 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1596 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1597 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1598 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1599 \ turn_on -> if not turn_on
1600 then deprecate "You can't turn off RelaxedPolyRec any more"
1602 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1603 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1604 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1606 ( "PatternSignatures", Opt_ScopedTypeVariables,
1607 deprecatedForExtension "ScopedTypeVariables" ),
1609 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1610 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1611 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1612 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1613 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1614 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1615 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1616 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1617 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1618 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1619 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1620 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1621 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1622 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1623 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1624 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1625 ( "PackageImports", Opt_PackageImports, nop ),
1626 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1627 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1630 defaultFlags :: [DynFlag]
1632 = [ Opt_AutoLinkPackages,
1633 Opt_ReadUserPackageConf,
1641 Opt_PrintBindContents,
1645 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1646 -- The default -O0 options
1650 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1652 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1653 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1654 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1655 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1656 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1657 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1659 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1661 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1662 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1664 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1665 -- all over the place
1667 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1669 -- Record wild-cards implies field disambiguation
1670 -- Otherwise if you write (C {..}) you may well get
1671 -- stuff like " 'a' not in scope ", which is a bit silly
1672 -- if the compiler has just filled in field 'a' of constructor 'C'
1673 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1676 optLevelFlags :: [([Int], DynFlag)]
1678 = [ ([0], Opt_IgnoreInterfacePragmas)
1679 , ([0], Opt_OmitInterfacePragmas)
1681 , ([1,2], Opt_IgnoreAsserts)
1682 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1684 , ([1,2], Opt_DoEtaReduction)
1685 , ([1,2], Opt_CaseMerge)
1686 , ([1,2], Opt_Strictness)
1688 , ([1,2], Opt_FullLaziness)
1689 , ([1,2], Opt_Specialise)
1690 , ([1,2], Opt_FloatIn)
1692 , ([2], Opt_LiberateCase)
1693 , ([2], Opt_SpecConstr)
1694 , ([2], Opt_RegsGraph)
1696 -- , ([2], Opt_StaticArgumentTransformation)
1697 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1698 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1699 -- several improvements to the heuristics, and I'm concerned that without
1700 -- those changes SAT will interfere with some attempts to write "high
1701 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1702 -- this year. In particular, the version in HEAD lacks the tail call
1703 -- criterion, so many things that look like reasonable loops will be
1704 -- turned into functions with extra (unneccesary) thunk creation.
1706 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1707 -- This one is important for a tiresome reason:
1708 -- we want to make sure that the bindings for data
1709 -- constructors are eta-expanded. This is probably
1710 -- a good thing anyway, but it seems fragile.
1713 -- -----------------------------------------------------------------------------
1714 -- Standard sets of warning options
1716 standardWarnings :: [DynFlag]
1718 = [ Opt_WarnWarningsDeprecations,
1719 Opt_WarnDeprecatedFlags,
1720 Opt_WarnUnrecognisedPragmas,
1721 Opt_WarnOverlappingPatterns,
1722 Opt_WarnMissingFields,
1723 Opt_WarnMissingMethods,
1724 Opt_WarnDuplicateExports,
1725 Opt_WarnLazyUnliftedBindings,
1726 Opt_WarnDodgyForeignImports,
1727 Opt_WarnWrongDoBind,
1728 Opt_WarnAlternativeLayoutRuleTransitional
1731 minusWOpts :: [DynFlag]
1733 = standardWarnings ++
1734 [ Opt_WarnUnusedBinds,
1735 Opt_WarnUnusedMatches,
1736 Opt_WarnUnusedImports,
1737 Opt_WarnIncompletePatterns,
1738 Opt_WarnDodgyExports,
1739 Opt_WarnDodgyImports
1742 minusWallOpts :: [DynFlag]
1745 [ Opt_WarnTypeDefaults,
1746 Opt_WarnNameShadowing,
1747 Opt_WarnMissingSigs,
1750 Opt_WarnUnusedDoBind,
1754 -- minuswRemovesOpts should be every warning option
1755 minuswRemovesOpts :: [DynFlag]
1758 [Opt_WarnImplicitPrelude,
1759 Opt_WarnIncompletePatternsRecUpd,
1760 Opt_WarnMonomorphism,
1761 Opt_WarnUnrecognisedPragmas,
1762 Opt_WarnAutoOrphans,
1766 enableGlasgowExts :: DynP ()
1767 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1768 mapM_ setExtensionFlag glasgowExtsFlags
1770 disableGlasgowExts :: DynP ()
1771 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1772 mapM_ unSetExtensionFlag glasgowExtsFlags
1774 glasgowExtsFlags :: [ExtensionFlag]
1775 glasgowExtsFlags = [
1776 Opt_ForeignFunctionInterface
1777 , Opt_UnliftedFFITypes
1778 , Opt_ImplicitParams
1779 , Opt_ScopedTypeVariables
1781 , Opt_TypeSynonymInstances
1782 , Opt_StandaloneDeriving
1783 , Opt_DeriveDataTypeable
1785 , Opt_DeriveFoldable
1786 , Opt_DeriveTraversable
1787 , Opt_FlexibleContexts
1788 , Opt_FlexibleInstances
1789 , Opt_ConstrainedClassMethods
1790 , Opt_MultiParamTypeClasses
1791 , Opt_FunctionalDependencies
1793 , Opt_PolymorphicComponents
1794 , Opt_ExistentialQuantification
1796 , Opt_PostfixOperators
1798 , Opt_LiberalTypeSynonyms
1802 , Opt_ParallelListComp
1803 , Opt_EmptyDataDecls
1804 , Opt_KindSignatures
1805 , Opt_GeneralizedNewtypeDeriving ]
1808 -- Consult the RTS to find whether GHC itself has been built profiled
1809 -- If so, you can't use Template Haskell
1810 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1812 rtsIsProfiled :: Bool
1813 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1815 checkTemplateHaskellOk :: Bool -> DynP ()
1816 checkTemplateHaskellOk turn_on
1817 | turn_on && rtsIsProfiled
1818 = addErr "You can't use Template Haskell with a profiled compiler"
1822 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1823 -- so we simply say "ok". It doesn't matter because TH isn't
1824 -- available in stage 1 anyway.
1825 checkTemplateHaskellOk turn_on = return ()
1828 {- **********************************************************************
1830 DynFlags constructors
1832 %********************************************************************* -}
1834 type DynP = EwM (CmdLineP DynFlags)
1836 upd :: (DynFlags -> DynFlags) -> DynP ()
1837 upd f = liftEwM (do { dfs <- getCmdLineState
1838 ; putCmdLineState $! (f dfs) })
1840 --------------- Constructor functions for OptKind -----------------
1841 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1842 noArg fn = NoArg (upd fn)
1844 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1845 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1847 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1848 hasArg fn = HasArg (upd . fn)
1850 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1851 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1852 ; deprecate deprec })
1854 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1855 intSuffix fn = IntSuffix (\n -> upd (fn n))
1857 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1858 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1860 --------------------------
1861 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1862 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1863 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1865 --------------------------
1866 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1867 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1870 deps = [ if turn_on then setExtensionFlag d
1871 else unSetExtensionFlag d
1872 | (f', turn_on, d) <- impliedFlags, f' == f ]
1873 -- When you set f, set the ones it implies
1874 -- NB: use setExtensionFlag recursively, in case the implied flags
1875 -- implies further flags
1877 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1878 -- When you un-set f, however, we don't un-set the things it implies
1879 -- (except for -fno-glasgow-exts, which is treated specially)
1881 --------------------------
1882 setDumpFlag' :: DynFlag -> DynP ()
1883 setDumpFlag' dump_flag
1884 = do { setDynFlag dump_flag
1885 ; when want_recomp forceRecompile }
1887 -- Certain dumpy-things are really interested in what's going
1888 -- on during recompilation checking, so in those cases we
1889 -- don't want to turn it off.
1890 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1891 Opt_D_dump_hi_diffs]
1893 forceRecompile :: DynP ()
1894 -- Whenver we -ddump, force recompilation (by switching off the
1895 -- recompilation checker), else you don't see the dump! However,
1896 -- don't switch it off in --make mode, else *everything* gets
1897 -- recompiled which probably isn't what you want
1898 forceRecompile = do { dfs <- liftEwM getCmdLineState
1899 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1901 force_recomp dfs = isOneShot (ghcMode dfs)
1903 setVerboseCore2Core :: DynP ()
1904 setVerboseCore2Core = do forceRecompile
1905 setDynFlag Opt_D_verbose_core2core
1906 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1909 setDumpSimplPhases :: String -> DynP ()
1910 setDumpSimplPhases s = do forceRecompile
1911 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1913 spec = case s of { ('=' : s') -> s'; _ -> s }
1915 setVerbosity :: Maybe Int -> DynP ()
1916 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1918 addCmdlineHCInclude :: String -> DynP ()
1919 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1921 extraPkgConf_ :: FilePath -> DynP ()
1922 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1924 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1926 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1928 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1930 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1932 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1934 setPackageName :: String -> DynFlags -> DynFlags
1935 setPackageName p s = s{ thisPackage = stringToPackageId p }
1937 -- If we're linking a binary, then only targets that produce object
1938 -- code are allowed (requests for other target types are ignored).
1939 setTarget :: HscTarget -> DynP ()
1940 setTarget l = upd set
1943 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1946 -- Changes the target only if we're compiling object code. This is
1947 -- used by -fasm and -fvia-C, which switch from one to the other, but
1948 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1949 -- can be safely used in an OPTIONS_GHC pragma.
1950 setObjTarget :: HscTarget -> DynP ()
1951 setObjTarget l = upd set
1954 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1957 setOptLevel :: Int -> DynFlags -> DynFlags
1958 setOptLevel n dflags
1959 | hscTarget dflags == HscInterpreted && n > 0
1961 -- not in IO any more, oh well:
1962 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1964 = updOptLevel n dflags
1967 -- -Odph is equivalent to
1969 -- -O2 optimise as much as possible
1970 -- -fno-method-sharing sharing specialisation defeats fusion
1972 -- -fdicts-cheap always inline dictionaries
1973 -- -fmax-simplifier-iterations20 this is necessary sometimes
1974 -- -fsimplifier-phases=3 we use an additional simplifier phase
1976 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1977 -- -fno-spec-constr-count SpecConstr as much as possible
1978 -- -finline-enough-args hack to prevent excessive inlining
1980 setDPHOpt :: DynFlags -> DynFlags
1981 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1983 , specConstrThreshold = Nothing
1984 , specConstrCount = Nothing
1986 `dopt_set` Opt_DictsCheap
1988 data DPHBackend = DPHPar
1991 deriving(Eq, Ord, Enum, Show)
1993 setDPHBackend :: DPHBackend -> DynP ()
1994 setDPHBackend backend
1996 upd $ \dflags -> dflags { dphBackend = backend }
1997 mapM_ exposePackage (dph_packages backend)
1999 dph_packages DPHThis = []
2000 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2001 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2003 dphPackage :: DynFlags -> PackageId
2004 dphPackage dflags = case dphBackend dflags of
2005 DPHPar -> dphParPackageId
2006 DPHSeq -> dphSeqPackageId
2007 DPHThis -> thisPackage dflags
2009 setMainIs :: String -> DynP ()
2011 | not (null main_fn) && isLower (head main_fn)
2012 -- The arg looked like "Foo.Bar.baz"
2013 = upd $ \d -> d{ mainFunIs = Just main_fn,
2014 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2016 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2017 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2019 | otherwise -- The arg looked like "baz"
2020 = upd $ \d -> d{ mainFunIs = Just arg }
2022 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2024 -----------------------------------------------------------------------------
2025 -- Paths & Libraries
2027 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2029 -- -i on its own deletes the import paths
2030 addImportPath "" = upd (\s -> s{importPaths = []})
2031 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2035 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2038 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2040 addFrameworkPath p =
2041 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2043 #ifndef mingw32_TARGET_OS
2044 split_marker :: Char
2045 split_marker = ':' -- not configurable (ToDo)
2048 splitPathList :: String -> [String]
2049 splitPathList s = filter notNull (splitUp s)
2050 -- empty paths are ignored: there might be a trailing
2051 -- ':' in the initial list, for example. Empty paths can
2052 -- cause confusion when they are translated into -I options
2053 -- for passing to gcc.
2055 #ifndef mingw32_TARGET_OS
2056 splitUp xs = split split_marker xs
2058 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2060 -- That is, if "foo:bar:baz" is used, this interpreted as
2061 -- consisting of three entries, 'foo', 'bar', 'baz'.
2062 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2063 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2065 -- Notice that no attempt is made to fully replace the 'standard'
2066 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2067 -- that this will cause too much breakage for users & ':' will
2068 -- work fine even with DOS paths, if you're not insisting on being silly.
2071 splitUp (x:':':div:xs) | div `elem` dir_markers
2072 = ((x:':':div:p): splitUp rs)
2074 (p,rs) = findNextPath xs
2075 -- we used to check for existence of the path here, but that
2076 -- required the IO monad to be threaded through the command-line
2077 -- parser which is quite inconvenient. The
2078 splitUp xs = cons p (splitUp rs)
2080 (p,rs) = findNextPath xs
2085 -- will be called either when we've consumed nought or the
2086 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2087 -- finding the next split marker.
2089 case break (`elem` split_markers) xs of
2090 (p, _:ds) -> (p, ds)
2093 split_markers :: [Char]
2094 split_markers = [':', ';']
2096 dir_markers :: [Char]
2097 dir_markers = ['/', '\\']
2100 -- -----------------------------------------------------------------------------
2101 -- tmpDir, where we store temporary files.
2103 setTmpDir :: FilePath -> DynFlags -> DynFlags
2104 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2105 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2106 -- seem necessary now --SDM 7/2/2008
2108 -----------------------------------------------------------------------------
2111 setRtsOpts :: String -> DynP ()
2112 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2114 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2115 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2117 -----------------------------------------------------------------------------
2120 setOptHpcDir :: String -> DynP ()
2121 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2123 -----------------------------------------------------------------------------
2124 -- Via-C compilation stuff
2126 -- There are some options that we need to pass to gcc when compiling
2127 -- Haskell code via C, but are only supported by recent versions of
2128 -- gcc. The configure script decides which of these options we need,
2129 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2130 -- read before each via-C compilation. The advantage of having these
2131 -- in a separate file is that the file can be created at install-time
2132 -- depending on the available gcc version, and even re-generated later
2133 -- if gcc is upgraded.
2135 -- The options below are not dependent on the version of gcc, only the
2138 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2139 [String]) -- for registerised HC compilations
2140 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2141 in (cCcOpts ++ flagsAll, flagsRegHc)
2143 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2144 [String]) -- for registerised HC compilations
2145 machdepCCOpts' _dflags
2146 #if alpha_TARGET_ARCH
2148 #ifdef HAVE_THREADED_RTS_SUPPORT
2152 -- For now, to suppress the gcc warning "call-clobbered
2153 -- register used for global register variable", we simply
2154 -- disable all warnings altogether using the -w flag. Oh well.
2156 #elif hppa_TARGET_ARCH
2157 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2158 -- (very nice, but too bad the HP /usr/include files don't agree.)
2159 = ( ["-D_HPUX_SOURCE"], [] )
2161 #elif m68k_TARGET_ARCH
2162 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2163 -- popping of args to routines to be explicit; if we let things
2164 -- be deferred 'til after an STGJUMP, imminent death is certain!
2166 -- -fomit-frame-pointer : *don't*
2167 -- It's better to have a6 completely tied up being a frame pointer
2168 -- rather than let GCC pick random things to do with it.
2169 -- (If we want to steal a6, then we would try to do things
2170 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2171 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2173 #elif i386_TARGET_ARCH
2174 -- -fno-defer-pop : basically the same game as for m68k
2176 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2177 -- the fp (%ebp) for our register maps.
2178 = let n_regs = stolen_x86_regs _dflags
2181 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2184 "-fomit-frame-pointer",
2185 -- we want -fno-builtin, because when gcc inlines
2186 -- built-in functions like memcpy() it tends to
2187 -- run out of registers, requiring -monly-n-regs
2189 "-DSTOLEN_X86_REGS="++show n_regs ]
2192 #elif ia64_TARGET_ARCH
2193 = ( [], ["-fomit-frame-pointer", "-G0"] )
2195 #elif x86_64_TARGET_ARCH
2198 ["-fomit-frame-pointer",
2199 "-fno-asynchronous-unwind-tables",
2200 -- the unwind tables are unnecessary for HC code,
2201 -- and get in the way of -split-objs. Another option
2202 -- would be to throw them away in the mangler, but this
2205 -- calling builtins like strlen() using the FFI can
2206 -- cause gcc to run out of regs, so use the external
2210 #elif sparc_TARGET_ARCH
2212 -- For now, to suppress the gcc warning "call-clobbered
2213 -- register used for global register variable", we simply
2214 -- disable all warnings altogether using the -w flag. Oh well.
2216 #elif powerpc_apple_darwin_TARGET
2218 -- Disable Apple's precompiling preprocessor. It's a great thing
2219 -- for "normal" programs, but it doesn't support register variable
2221 = ( [], ["-no-cpp-precomp"] )
2226 picCCOpts :: DynFlags -> [String]
2228 #if darwin_TARGET_OS
2229 -- Apple prefers to do things the other way round.
2230 -- PIC is on by default.
2231 -- -mdynamic-no-pic:
2232 -- Turn off PIC code generation.
2234 -- Don't generate "common" symbols - these are unwanted
2235 -- in dynamic libraries.
2238 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2240 = ["-mdynamic-no-pic"]
2241 #elif mingw32_TARGET_OS
2242 -- no -fPIC for Windows
2244 = ["-U __PIC__","-D__PIC__"]
2248 -- we need -fPIC for C files when we are compiling with -dynamic,
2249 -- otherwise things like stub.c files don't get compiled
2250 -- correctly. They need to reference data in the Haskell
2251 -- objects, but can't without -fPIC. See
2252 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2253 | opt_PIC || not opt_Static
2254 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2259 -- -----------------------------------------------------------------------------
2263 can_split = cSplitObjs == "YES"
2265 -- -----------------------------------------------------------------------------
2268 data Printable = String String
2269 | FromDynFlags (DynFlags -> String)
2271 compilerInfo :: [(String, Printable)]
2272 compilerInfo = [("Project name", String cProjectName),
2273 ("Project version", String cProjectVersion),
2274 ("Booter version", String cBooterVersion),
2275 ("Stage", String cStage),
2276 ("Build platform", String cBuildPlatform),
2277 ("Host platform", String cHostPlatform),
2278 ("Target platform", String cTargetPlatform),
2279 ("Have interpreter", String cGhcWithInterpreter),
2280 ("Object splitting", String cSplitObjs),
2281 ("Have native code generator", String cGhcWithNativeCodeGen),
2282 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2283 ("Use archives for ghci", String (show cUseArchivesForGhci)),
2284 ("Support SMP", String cGhcWithSMP),
2285 ("Unregisterised", String cGhcUnregisterised),
2286 ("Tables next to code", String cGhcEnableTablesNextToCode),
2287 ("RTS ways", String cGhcRTSWays),
2288 ("Leading underscore", String cLeadingUnderscore),
2289 ("Debug on", String (show debugIsOn)),
2290 ("LibDir", FromDynFlags topDir),
2291 ("Global Package DB", FromDynFlags systemPackageConfig)