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
20 flattenExtensionFlags,
21 ensureFlattenedExtensionFlags,
32 HscTarget(..), isObjectTarget, defaultObjectTarget,
33 GhcMode(..), isOneShot,
34 GhcLink(..), isNoLink,
38 fFlags, fLangFlags, xFlags,
42 -- ** Manipulating DynFlags
43 defaultDynFlags, -- DynFlags
44 initDynFlags, -- DynFlags -> IO DynFlags
46 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
53 -- ** Parsing DynFlags
55 parseDynamicNoPackageFlags,
58 supportedLanguagesAndExtensions,
60 -- ** DynFlag C compiler options
61 machdepCCOpts, picCCOpts,
63 -- * Configuration of the stg-to-stg passes
67 -- * Compiler configuration suitable for display to the user
71 -- Only in stage 2 can we be sure that the RTS
72 -- exposes the appropriate runtime boolean
77 #include "HsVersions.h"
79 #ifndef OMIT_NATIVE_CODEGEN
84 import PrelNames ( mAIN )
86 import {-# SOURCE #-} Packages (PackageState)
87 import DriverPhases ( Phase(..), phaseInputExt )
90 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
93 import Maybes ( orElse )
97 import Foreign.C ( CInt )
98 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
100 import System.IO.Unsafe ( unsafePerformIO )
102 import Control.Monad ( when )
106 import Data.Map (Map)
107 import qualified Data.Map as Map
108 import System.FilePath
109 import System.IO ( stderr, hPutChar )
111 -- -----------------------------------------------------------------------------
114 -- | Enumerates the simple on-or-off dynamic flags
120 | Opt_D_dump_cmmz_pretty
124 | Opt_D_dump_asm_native
125 | Opt_D_dump_asm_liveness
126 | Opt_D_dump_asm_coalesce
127 | Opt_D_dump_asm_regalloc
128 | Opt_D_dump_asm_regalloc_stages
129 | Opt_D_dump_asm_conflicts
130 | Opt_D_dump_asm_stats
131 | Opt_D_dump_asm_expanded
138 | Opt_D_dump_inlinings
139 | Opt_D_dump_rule_firings
140 | Opt_D_dump_occur_anal
144 | Opt_D_dump_simpl_iterations
145 | Opt_D_dump_simpl_phases
154 | Opt_D_dump_worker_wrapper
155 | Opt_D_dump_rn_trace
156 | Opt_D_dump_rn_stats
158 | Opt_D_dump_simpl_stats
159 | Opt_D_dump_tc_trace
160 | Opt_D_dump_if_trace
167 | Opt_D_verbose_core2core
168 | Opt_D_verbose_stg2stg
170 | Opt_D_dump_hi_diffs
171 | Opt_D_dump_minimal_imports
172 | Opt_D_dump_mod_cycles
173 | Opt_D_dump_view_pattern_commoning
174 | Opt_D_faststring_stats
175 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
176 | Opt_D_no_debug_output
182 | Opt_WarnIsError -- -Werror; makes warnings fatal
183 | Opt_WarnDuplicateExports
185 | Opt_WarnImplicitPrelude
186 | Opt_WarnIncompletePatterns
187 | Opt_WarnIncompletePatternsRecUpd
188 | Opt_WarnMissingFields
189 | Opt_WarnMissingImportList
190 | Opt_WarnMissingMethods
191 | Opt_WarnMissingSigs
192 | Opt_WarnMissingLocalSigs
193 | Opt_WarnNameShadowing
194 | Opt_WarnOverlappingPatterns
195 | Opt_WarnTypeDefaults
196 | Opt_WarnMonomorphism
197 | Opt_WarnUnusedBinds
198 | Opt_WarnUnusedImports
199 | Opt_WarnUnusedMatches
200 | Opt_WarnWarningsDeprecations
201 | Opt_WarnDeprecatedFlags
202 | Opt_WarnDodgyExports
203 | Opt_WarnDodgyImports
205 | Opt_WarnAutoOrphans
207 | Opt_WarnUnrecognisedPragmas
208 | Opt_WarnDodgyForeignImports
209 | Opt_WarnLazyUnliftedBindings
210 | Opt_WarnUnusedDoBind
211 | Opt_WarnWrongDoBind
212 | Opt_WarnAlternativeLayoutRuleTransitional
214 | Opt_PrintExplicitForalls
221 | Opt_StaticArgumentTransformation
225 | Opt_DoLambdaEtaExpansion
229 | Opt_UnboxStrictFields
232 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
234 | Opt_RegsGraph -- do graph coloring register allocation
235 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
238 | Opt_IgnoreInterfacePragmas
239 | Opt_OmitInterfacePragmas
240 | Opt_ExposeAllUnfoldings
243 | Opt_AutoSccsOnAllToplevs
244 | Opt_AutoSccsOnExportedToplevs
245 | Opt_AutoSccsOnIndividualCafs
252 | Opt_ExcessPrecision
253 | Opt_EagerBlackHoling
254 | Opt_ReadUserPackageConf
258 | Opt_HideAllPackages
259 | Opt_PrintBindResult
263 | Opt_BreakOnException
265 | Opt_PrintEvldWithShow
266 | Opt_PrintBindContents
269 | Opt_EmitExternalCore
271 | Opt_BuildingCabalPackage
278 | Opt_ConvertToZipCfgAndBack
279 | Opt_AutoLinkPackages
280 | Opt_ImplicitImportQualified
289 | Opt_KeepRawTokenStream
294 data Language = Haskell98 | Haskell2010
298 | Opt_OverlappingInstances
299 | Opt_UndecidableInstances
300 | Opt_IncoherentInstances
301 | Opt_MonomorphismRestriction
304 | Opt_RelaxedPolyRec -- Deprecated
305 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
306 | Opt_ForeignFunctionInterface
307 | Opt_UnliftedFFITypes
308 | Opt_GHCForeignImportPrim
309 | Opt_PArr -- Syntactic support for parallel arrays
310 | Opt_Arrows -- Arrow-notation syntax
311 | Opt_TemplateHaskell
314 | Opt_Generics -- "Derivable type classes"
315 | Opt_ImplicitPrelude
316 | Opt_ScopedTypeVariables
320 | Opt_OverloadedStrings
321 | Opt_DisambiguateRecordFields
322 | Opt_RecordWildCards
327 | Opt_DoAndIfThenElse
329 | Opt_StandaloneDeriving
330 | Opt_DeriveDataTypeable
332 | Opt_DeriveTraversable
335 | Opt_TypeSynonymInstances
336 | Opt_FlexibleContexts
337 | Opt_FlexibleInstances
338 | Opt_ConstrainedClassMethods
339 | Opt_MultiParamTypeClasses
340 | Opt_FunctionalDependencies
342 | Opt_PolymorphicComponents
343 | Opt_ExistentialQuantification
347 | Opt_ParallelListComp
348 | Opt_TransformListComp
349 | Opt_GeneralizedNewtypeDeriving
352 | Opt_PostfixOperators
355 | Opt_LiberalTypeSynonyms
358 | Opt_ImpredicativeTypes
361 | Opt_NewQualifiedOperators
363 | Opt_AlternativeLayoutRule
364 | Opt_AlternativeLayoutRuleTransitional
365 | Opt_DatatypeContexts
368 -- | Contains not only a collection of 'DynFlag's but also a plethora of
369 -- information relating to the compilation of a single file or GHC session
370 data DynFlags = DynFlags {
373 hscTarget :: HscTarget,
374 hscOutName :: String, -- ^ Name of the output file
375 extCoreName :: String, -- ^ Name of the .hcr output file
376 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
377 optLevel :: Int, -- ^ Optimisation level
378 simplPhases :: Int, -- ^ Number of simplifier phases
379 maxSimplIterations :: Int, -- ^ Max simplifier iterations
380 shouldDumpSimplPhase :: Maybe String,
381 ruleCheck :: Maybe String,
382 strictnessBefore :: [Int], -- ^ Additional demand analysis
384 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
385 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
386 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
388 #ifndef OMIT_NATIVE_CODEGEN
389 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
391 stolen_x86_regs :: Int,
392 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
393 importPaths :: [FilePath],
395 mainFunIs :: Maybe String,
396 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
398 dphBackend :: DPHBackend,
400 thisPackage :: PackageId, -- ^ name of package currently being compiled
403 ways :: [Way], -- ^ Way flags from the command line
404 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
405 rtsBuildTag :: String, -- ^ The RTS \"way\"
407 -- For object splitting
408 splitInfo :: Maybe (String,Int),
411 objectDir :: Maybe String,
412 dylibInstallName :: Maybe String,
413 hiDir :: Maybe String,
414 stubDir :: Maybe String,
420 outputFile :: Maybe String,
421 outputHi :: Maybe String,
422 dynLibLoader :: DynLibLoader,
424 -- | This is set by 'DriverPipeline.runPipeline' based on where
425 -- its output is going.
426 dumpPrefix :: Maybe FilePath,
428 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
429 -- Set by @-ddump-file-prefix@
430 dumpPrefixForce :: Maybe FilePath,
432 includePaths :: [String],
433 libraryPaths :: [String],
434 frameworkPaths :: [String], -- used on darwin only
435 cmdlineFrameworks :: [String], -- ditto
436 tmpDir :: String, -- no trailing '/'
438 ghcUsagePath :: FilePath, -- Filled in by SysTools
439 ghciUsagePath :: FilePath, -- ditto
440 rtsOpts :: Maybe String,
441 rtsOptsEnabled :: RtsOptsEnabled,
443 hpcDir :: String, -- ^ Path to store the .mix files
445 -- options for particular phases
453 opt_windres :: [String],
454 opt_lo :: [String], -- LLVM: llvm optimiser
455 opt_lc :: [String], -- LLVM: llc static compiler
457 -- commands for particular phases
459 pgm_P :: (String,[Option]),
461 pgm_c :: (String,[Option]),
462 pgm_m :: (String,[Option]),
463 pgm_s :: (String,[Option]),
464 pgm_a :: (String,[Option]),
465 pgm_l :: (String,[Option]),
466 pgm_dll :: (String,[Option]),
468 pgm_sysman :: String,
469 pgm_windres :: String,
470 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
471 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
474 depMakefile :: FilePath,
475 depIncludePkgDeps :: Bool,
476 depExcludeMods :: [ModuleName],
477 depSuffixes :: [String],
480 extraPkgConfs :: [FilePath],
481 topDir :: FilePath, -- filled in by SysTools
482 systemPackageConfig :: FilePath, -- ditto
483 -- ^ The @-package-conf@ flags given on the command line, in the order
486 packageFlags :: [PackageFlag],
487 -- ^ The @-package@ and @-hide-package@ flags from the command-line
490 -- NB. do not modify this field, it is calculated by
491 -- Packages.initPackages and Packages.updatePackages.
492 pkgDatabase :: Maybe [PackageConfig],
493 pkgState :: PackageState,
496 -- These have to be IORefs, because the defaultCleanupHandler needs to
497 -- know what to clean when an exception happens
498 filesToClean :: IORef [FilePath],
499 dirsToClean :: IORef (Map FilePath FilePath),
503 language :: Maybe Language,
504 extensionFlags :: Either [OnOff ExtensionFlag]
507 -- | Message output action: use "ErrUtils" instead of this if you can
508 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
510 haddockOptions :: Maybe String
513 wayNames :: DynFlags -> [WayName]
514 wayNames = map wayName . ways
516 -- | The target code type of the compilation (if any).
518 -- Whenever you change the target, also make sure to set 'ghcLink' to
519 -- something sensible.
521 -- 'HscNothing' can be used to avoid generating any output, however, note
524 -- * This will not run the desugaring step, thus no warnings generated in
525 -- this step will be output. In particular, this includes warnings related
526 -- to pattern matching. You can run the desugarer manually using
527 -- 'GHC.desugarModule'.
529 -- * If a program uses Template Haskell the typechecker may try to run code
530 -- from an imported module. This will fail if no code has been generated
531 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
532 -- whether this might be the case and choose to either switch to a
533 -- different target or avoid typechecking such modules. (The latter may
534 -- preferable for security reasons.)
537 = HscC -- ^ Generate C code.
538 | HscAsm -- ^ Generate assembly using the native code generator.
539 | HscLlvm -- ^ Generate assembly using the llvm code generator.
540 | HscJava -- ^ Generate Java bytecode.
541 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
542 | HscNothing -- ^ Don't generate any code. See notes above.
545 -- | Will this target result in an object file on the disk?
546 isObjectTarget :: HscTarget -> Bool
547 isObjectTarget HscC = True
548 isObjectTarget HscAsm = True
549 isObjectTarget HscLlvm = True
550 isObjectTarget _ = False
552 -- | The 'GhcMode' tells us whether we're doing multi-module
553 -- compilation (controlled via the "GHC" API) or one-shot
554 -- (single-module) compilation. This makes a difference primarily to
555 -- the "Finder": in one-shot mode we look for interface files for
556 -- imported modules, but in multi-module mode we look for source files
557 -- in order to check whether they need to be recompiled.
559 = CompManager -- ^ @\-\-make@, GHCi, etc.
560 | OneShot -- ^ @ghc -c Foo.hs@
561 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
564 instance Outputable GhcMode where
565 ppr CompManager = ptext (sLit "CompManager")
566 ppr OneShot = ptext (sLit "OneShot")
567 ppr MkDepend = ptext (sLit "MkDepend")
569 isOneShot :: GhcMode -> Bool
570 isOneShot OneShot = True
571 isOneShot _other = False
573 -- | What to do in the link step, if there is one.
575 = NoLink -- ^ Don't link at all
576 | LinkBinary -- ^ Link object code into a binary
577 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
578 -- bytecode and object code).
579 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
582 isNoLink :: GhcLink -> Bool
583 isNoLink NoLink = True
586 -- Is it worth evaluating this Bool and caching it in the DynFlags value
587 -- during initDynFlags?
588 doingTickyProfiling :: DynFlags -> Bool
589 doingTickyProfiling _ = opt_Ticky
590 -- XXX -ticky is a static flag, because it implies -debug which is also
591 -- static. If the way flags were made dynamic, we could fix this.
594 = ExposePackage String
595 | ExposePackageId String
597 | IgnorePackage String
600 defaultHscTarget :: HscTarget
601 defaultHscTarget = defaultObjectTarget
603 -- | The 'HscTarget' value corresponding to the default way to create
604 -- object files on the current platform.
605 defaultObjectTarget :: HscTarget
607 | cGhcWithNativeCodeGen == "YES" = HscAsm
615 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
617 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
618 initDynFlags :: DynFlags -> IO DynFlags
619 initDynFlags dflags = do
620 -- someday these will be dynamic flags
621 ways <- readIORef v_Ways
622 refFilesToClean <- newIORef []
623 refDirsToClean <- newIORef Map.empty
626 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
627 rtsBuildTag = mkBuildTag ways,
628 filesToClean = refFilesToClean,
629 dirsToClean = refDirsToClean
632 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
633 -- and must be fully initialized by 'GHC.newSession' first.
634 defaultDynFlags :: DynFlags
637 ghcMode = CompManager,
638 ghcLink = LinkBinary,
639 hscTarget = defaultHscTarget,
645 maxSimplIterations = 4,
646 shouldDumpSimplPhase = Nothing,
648 specConstrThreshold = Just 200,
649 specConstrCount = Just 3,
650 liberateCaseThreshold = Just 200,
651 strictnessBefore = [],
653 #ifndef OMIT_NATIVE_CODEGEN
654 targetPlatform = defaultTargetPlatform,
657 cmdlineHcIncludes = [],
661 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
665 thisPackage = mainPackageId,
668 dylibInstallName = Nothing,
672 objectSuf = phaseInputExt StopLn,
673 hcSuf = phaseInputExt HCc,
676 outputFile = Nothing,
678 dynLibLoader = SystemDependent,
679 dumpPrefix = Nothing,
680 dumpPrefixForce = Nothing,
684 cmdlineFrameworks = [],
685 tmpDir = cDEFAULT_TMPDIR,
687 rtsOptsEnabled = RtsOptsSafeOnly,
693 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
706 pkgDatabase = Nothing,
707 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
708 ways = panic "defaultDynFlags: No ways",
709 buildTag = panic "defaultDynFlags: No buildTag",
710 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
712 -- initSysTools fills all these in
713 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
714 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
715 topDir = panic "defaultDynFlags: No topDir",
716 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
717 pgm_L = panic "defaultDynFlags: No pgm_L",
718 pgm_P = panic "defaultDynFlags: No pgm_P",
719 pgm_F = panic "defaultDynFlags: No pgm_F",
720 pgm_c = panic "defaultDynFlags: No pgm_c",
721 pgm_m = panic "defaultDynFlags: No pgm_m",
722 pgm_s = panic "defaultDynFlags: No pgm_s",
723 pgm_a = panic "defaultDynFlags: No pgm_a",
724 pgm_l = panic "defaultDynFlags: No pgm_l",
725 pgm_dll = panic "defaultDynFlags: No pgm_dll",
726 pgm_T = panic "defaultDynFlags: No pgm_T",
727 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
728 pgm_windres = panic "defaultDynFlags: No pgm_windres",
729 pgm_lo = panic "defaultDynFlags: No pgm_lo",
730 pgm_lc = panic "defaultDynFlags: No pgm_lc",
731 -- end of initSysTools values
733 depMakefile = "Makefile",
734 depIncludePkgDeps = False,
737 -- end of ghc -M values
738 filesToClean = panic "defaultDynFlags: No filesToClean",
739 dirsToClean = panic "defaultDynFlags: No dirsToClean",
740 haddockOptions = Nothing,
741 flags = defaultFlags,
743 extensionFlags = Left [],
745 log_action = \severity srcSpan style msg ->
747 SevOutput -> printOutput (msg style)
748 SevInfo -> printErrs (msg style)
749 SevFatal -> printErrs (msg style)
752 printErrs ((mkLocMessage srcSpan msg) style)
753 -- careful (#2302): printErrs prints in UTF-8, whereas
754 -- converting to string first and using hPutStr would
755 -- just emit the low 8 bits of each unicode char.
759 Note [Verbosity levels]
760 ~~~~~~~~~~~~~~~~~~~~~~~
761 0 | print errors & warnings only
762 1 | minimal verbosity: print "compiling M ... done." for each module.
763 2 | equivalent to -dshow-passes
764 3 | equivalent to existing "ghc -v"
765 4 | "ghc -v -ddump-most"
766 5 | "ghc -v -ddump-all"
772 flattenExtensionFlags :: DynFlags -> DynFlags
773 flattenExtensionFlags dflags
774 = case extensionFlags dflags of
777 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
780 panic "Flattening already-flattened extension flags"
782 ensureFlattenedExtensionFlags :: DynFlags -> DynFlags
783 ensureFlattenedExtensionFlags dflags
784 = case extensionFlags dflags of
787 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
792 -- OnOffs accumulate in reverse order, so we use foldr in order to
793 -- process them in the right order
794 flattenExtensionFlags' :: Maybe Language -> [OnOff ExtensionFlag]
796 flattenExtensionFlags' ml = foldr f defaultExtensionFlags
797 where f (On f) flags = f : delete f flags
798 f (Off f) flags = delete f flags
799 defaultExtensionFlags = languageExtensions ml
801 languageExtensions :: Maybe Language -> [ExtensionFlag]
802 languageExtensions Nothing
803 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
804 -- behaviour the default, to see if anyone notices
806 -- In due course I'd like Opt_MonoLocalBinds to be on by default
807 -- But NB it's implied by GADTs etc
808 -- SLPJ September 2010
809 : languageExtensions (Just Haskell2010)
810 languageExtensions (Just Haskell98)
811 = [Opt_ImplicitPrelude,
812 Opt_MonomorphismRestriction,
814 Opt_DatatypeContexts]
815 languageExtensions (Just Haskell2010)
816 = [Opt_ImplicitPrelude,
817 Opt_MonomorphismRestriction,
818 Opt_DatatypeContexts,
820 Opt_ForeignFunctionInterface,
825 -- | Test whether a 'DynFlag' is set
826 dopt :: DynFlag -> DynFlags -> Bool
827 dopt f dflags = f `elem` (flags dflags)
830 dopt_set :: DynFlags -> DynFlag -> DynFlags
831 dopt_set dfs f = dfs{ flags = f : flags dfs }
833 -- | Unset a 'DynFlag'
834 dopt_unset :: DynFlags -> DynFlag -> DynFlags
835 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
837 -- | Test whether a 'ExtensionFlag' is set
838 xopt :: ExtensionFlag -> DynFlags -> Bool
839 xopt f dflags = case extensionFlags dflags of
840 Left _ -> panic ("Testing for extension flag " ++ show f ++ " before flattening")
841 Right flags -> f `elem` flags
843 -- | Set a 'ExtensionFlag'
844 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
845 xopt_set dfs f = case extensionFlags dfs of
846 Left onoffs -> dfs { extensionFlags = Left (On f : onoffs) }
847 Right _ -> panic ("Setting extension flag " ++ show f ++ " after flattening")
849 -- | Set a 'ExtensionFlag'
850 xopt_set_flattened :: DynFlags -> ExtensionFlag -> DynFlags
851 xopt_set_flattened dfs f = case extensionFlags dfs of
853 panic ("Setting extension flag " ++ show f ++ " before flattening, but expected flattened")
855 dfs { extensionFlags = Right (f : delete f flags) }
857 -- | Unset a 'ExtensionFlag'
858 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
859 xopt_unset dfs f = case extensionFlags dfs of
860 Left onoffs -> dfs { extensionFlags = Left (Off f : onoffs) }
861 Right _ -> panic ("Unsetting extension flag " ++ show f ++ " after flattening")
863 -- | Unset a 'ExtensionFlag'
864 xopt_unset_flattened :: DynFlags -> ExtensionFlag -> DynFlags
865 xopt_unset_flattened dfs f = case extensionFlags dfs of
867 panic ("Unsetting extension flag " ++ show f ++ " before flattening, but expected flattened")
869 dfs { extensionFlags = Right (delete f flags) }
871 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
872 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
873 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
874 -> [a] -- ^ Correctly ordered extracted options
875 getOpts dflags opts = reverse (opts dflags)
876 -- We add to the options from the front, so we need to reverse the list
878 -- | Gets the verbosity flag for the current verbosity level. This is fed to
879 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
880 getVerbFlag :: DynFlags -> String
882 | verbosity dflags >= 3 = "-v"
885 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
886 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
887 setPgmP, addOptl, addOptP,
888 addCmdlineFramework, addHaddockOpts
889 :: String -> DynFlags -> DynFlags
890 setOutputFile, setOutputHi, setDumpPrefixForce
891 :: Maybe String -> DynFlags -> DynFlags
893 setObjectDir f d = d{ objectDir = Just f}
894 setHiDir f d = d{ hiDir = Just f}
895 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
896 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
897 -- \#included from the .hc file when compiling with -fvia-C.
898 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
899 setDylibInstallName f d = d{ dylibInstallName = Just f}
901 setObjectSuf f d = d{ objectSuf = f}
902 setHiSuf f d = d{ hiSuf = f}
903 setHcSuf f d = d{ hcSuf = f}
905 setOutputFile f d = d{ outputFile = f}
906 setOutputHi f d = d{ outputHi = f}
908 parseDynLibLoaderMode f d =
910 ("deploy", "") -> d{ dynLibLoader = Deployable }
911 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
912 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
914 setDumpPrefixForce f d = d { dumpPrefixForce = f}
916 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
917 -- Config.hs should really use Option.
918 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
919 addOptl f d = d{ opt_l = f : opt_l d}
920 addOptP f d = d{ opt_P = f : opt_P d}
923 setDepMakefile :: FilePath -> DynFlags -> DynFlags
924 setDepMakefile f d = d { depMakefile = deOptDep f }
926 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
927 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
929 addDepExcludeMod :: String -> DynFlags -> DynFlags
931 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
933 addDepSuffix :: FilePath -> DynFlags -> DynFlags
934 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
937 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
938 -- we need to strip the "-optdep" off of the arg
939 deOptDep :: String -> String
940 deOptDep x = case stripPrefix "-optdep" x of
944 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
946 addHaddockOpts f d = d{ haddockOptions = Just f}
948 -- -----------------------------------------------------------------------------
949 -- Command-line options
951 -- | When invoking external tools as part of the compilation pipeline, we
952 -- pass these a sequence of options on the command-line. Rather than
953 -- just using a list of Strings, we use a type that allows us to distinguish
954 -- between filepaths and 'other stuff'. The reason for this is that
955 -- this type gives us a handle on transforming filenames, and filenames only,
956 -- to whatever format they're expected to be on a particular platform.
958 = FileOption -- an entry that _contains_ filename(s) / filepaths.
959 String -- a non-filepath prefix that shouldn't be
960 -- transformed (e.g., "/out=")
961 String -- the filepath/filename portion
964 showOpt :: Option -> String
965 showOpt (FileOption pre f) = pre ++ f
966 showOpt (Option s) = s
968 -----------------------------------------------------------------------------
969 -- Setting the optimisation level
971 updOptLevel :: Int -> DynFlags -> DynFlags
972 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
974 = dfs2{ optLevel = final_n }
976 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
977 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
978 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
980 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
981 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
983 -- -----------------------------------------------------------------------------
984 -- StgToDo: abstraction of stg-to-stg passes to run.
987 = StgDoMassageForProfiling -- should be (next to) last
988 -- There's also setStgVarInfo, but its absolute "lastness"
989 -- is so critical that it is hardwired in (no flag).
992 getStgToDo :: DynFlags -> [StgToDo]
996 stg_stats = dopt Opt_StgStats dflags
998 todo1 = if stg_stats then [D_stg_stats] else []
1000 todo2 | WayProf `elem` wayNames dflags
1001 = StgDoMassageForProfiling : todo1
1005 {- **********************************************************************
1009 %********************************************************************* -}
1011 -- -----------------------------------------------------------------------------
1012 -- Parsing the dynamic flags.
1014 -- | Parse dynamic flags from a list of command line arguments. Returns the
1015 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1016 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1017 -- flags or missing arguments).
1018 parseDynamicFlags :: Monad m =>
1019 DynFlags -> [Located String]
1020 -> m (DynFlags, [Located String], [Located String])
1021 -- ^ Updated 'DynFlags', left-over arguments, and
1022 -- list of warnings.
1023 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1025 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1026 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1027 parseDynamicNoPackageFlags :: Monad m =>
1028 DynFlags -> [Located String]
1029 -> m (DynFlags, [Located String], [Located String])
1030 -- ^ Updated 'DynFlags', left-over arguments, and
1031 -- list of warnings.
1032 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1034 parseDynamicFlags_ :: Monad m =>
1035 DynFlags -> [Located String] -> Bool
1036 -> m (DynFlags, [Located String], [Located String])
1037 parseDynamicFlags_ dflags0 args pkg_flags = do
1038 -- XXX Legacy support code
1039 -- We used to accept things like
1040 -- optdep-f -optdepdepend
1041 -- optdep-f -optdep depend
1042 -- optdep -f -optdepdepend
1043 -- optdep -f -optdep depend
1044 -- but the spaces trip up proper argument handling. So get rid of them.
1045 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1046 f (x : xs) = x : f xs
1050 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1051 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1052 | otherwise = dynamic_flags
1054 let ((leftover, errs, warns), dflags1)
1055 = runCmdLine (processArgs flag_spec args') dflags0
1056 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1058 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1059 -- isn't up to the job. We know that if hscTarget == HscC, then the
1060 -- user has explicitly used -fvia-C, because -fasm is the default,
1061 -- unless there is no NCG on this platform. The latter case is
1062 -- checked when the -fPIC flag is parsed.
1064 let (pic_warns, dflags2)
1065 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1066 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1067 dflags1{ hscTarget = HscAsm })
1068 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1069 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1070 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1071 ++ "dynamic on this platform;\n ignoring -fllvm"],
1072 dflags1{ hscTarget = HscAsm })
1074 | otherwise = ([], dflags1)
1076 return (dflags2, leftover, pic_warns ++ warns)
1079 {- **********************************************************************
1081 DynFlags specifications
1083 %********************************************************************* -}
1085 allFlags :: [String]
1086 allFlags = map ('-':) $
1087 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1088 map ("fno-"++) flags ++
1089 map ("f"++) flags ++
1090 map ("f"++) flags' ++
1091 map ("X"++) supportedExtensions
1092 where ok (PrefixPred _ _) = False
1094 flags = [ name | (name, _, _) <- fFlags ]
1095 flags' = [ name | (name, _, _) <- fLangFlags ]
1097 --------------- The main flags themselves ------------------
1098 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1100 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1101 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1102 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1104 (HasArg (\s -> do { addCmdlineHCInclude s
1105 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1106 , Flag "v" (OptIntSuffix setVerbosity)
1108 ------- Specific phases --------------------------------------------
1109 -- need to appear before -pgmL to be parsed as LLVM flags.
1110 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1111 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1112 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1113 , Flag "pgmP" (hasArg setPgmP)
1114 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1115 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1116 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1117 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1118 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1119 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1120 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1121 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1123 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1124 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1125 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1126 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1127 , Flag "optP" (hasArg addOptP)
1128 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1129 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1130 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1131 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1132 , Flag "optl" (hasArg addOptl)
1133 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1136 (NoArg (if can_split
1137 then setDynFlag Opt_SplitObjs
1138 else addWarn "ignoring -fsplit-objs"))
1140 -------- ghc -M -----------------------------------------------------
1141 , Flag "dep-suffix" (hasArg addDepSuffix)
1142 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1143 , Flag "dep-makefile" (hasArg setDepMakefile)
1144 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1145 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1146 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1147 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1148 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1149 , Flag "exclude-module" (hasArg addDepExcludeMod)
1150 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1151 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1153 -------- Linking ----------------------------------------------------
1154 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1155 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1156 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1157 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1159 ------- Libraries ---------------------------------------------------
1160 , Flag "L" (Prefix addLibraryPath)
1161 , Flag "l" (AnySuffix (upd . addOptl))
1163 ------- Frameworks --------------------------------------------------
1164 -- -framework-path should really be -F ...
1165 , Flag "framework-path" (HasArg addFrameworkPath)
1166 , Flag "framework" (hasArg addCmdlineFramework)
1168 ------- Output Redirection ------------------------------------------
1169 , Flag "odir" (hasArg setObjectDir)
1170 , Flag "o" (SepArg (upd . setOutputFile . Just))
1171 , Flag "ohi" (hasArg (setOutputHi . Just ))
1172 , Flag "osuf" (hasArg setObjectSuf)
1173 , Flag "hcsuf" (hasArg setHcSuf)
1174 , Flag "hisuf" (hasArg setHiSuf)
1175 , Flag "hidir" (hasArg setHiDir)
1176 , Flag "tmpdir" (hasArg setTmpDir)
1177 , Flag "stubdir" (hasArg setStubDir)
1178 , Flag "outputdir" (hasArg setOutputDir)
1179 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1181 ------- Keeping temporary files -------------------------------------
1182 -- These can be singular (think ghc -c) or plural (think ghc --make)
1183 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1184 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1185 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1186 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1187 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1188 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1189 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1190 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1191 -- This only makes sense as plural
1192 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1194 ------- Miscellaneous ----------------------------------------------
1195 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1196 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1197 , Flag "with-rtsopts" (HasArg setRtsOpts)
1198 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1199 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1200 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1201 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1202 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1203 , Flag "main-is" (SepArg setMainIs)
1204 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1205 , Flag "haddock-opts" (hasArg addHaddockOpts)
1206 , Flag "hpcdir" (SepArg setOptHpcDir)
1208 ------- recompilation checker --------------------------------------
1209 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1210 ; deprecate "Use -fno-force-recomp instead" }))
1211 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1212 ; deprecate "Use -fforce-recomp instead" }))
1214 ------ HsCpp opts ---------------------------------------------------
1215 , Flag "D" (AnySuffix (upd . addOptP))
1216 , Flag "U" (AnySuffix (upd . addOptP))
1218 ------- Include/Import Paths ----------------------------------------
1219 , Flag "I" (Prefix addIncludePath)
1220 , Flag "i" (OptPrefix addImportPath)
1222 ------ Debugging ----------------------------------------------------
1223 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1225 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1226 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1227 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1228 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1229 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1230 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1231 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1232 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1233 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1234 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1235 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1236 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1237 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1238 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1239 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1240 ; setDumpFlag' Opt_D_dump_llvm}))
1241 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1242 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1243 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1244 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1245 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1246 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1247 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1248 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1249 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1250 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1251 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1252 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1253 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1254 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1255 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1256 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1257 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1258 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1259 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1260 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1261 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1262 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1263 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1264 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1265 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1266 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1267 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1268 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1269 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1270 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1271 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1272 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1273 ; setVerboseCore2Core }))
1274 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1275 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1276 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1277 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1278 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1279 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1280 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1281 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1282 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1283 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1284 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1285 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1286 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1287 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1288 , Flag "dshow-passes" (NoArg (do forceRecompile
1289 setVerbosity (Just 2)))
1290 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1292 ------ Machine dependant (-m<blah>) stuff ---------------------------
1294 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1295 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1296 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1297 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1299 ------ Warning opts -------------------------------------------------
1300 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1301 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1302 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1303 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1304 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1305 ; deprecate "Use -w instead" }))
1306 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1308 ------ Optimisation flags ------------------------------------------
1309 , Flag "O" (noArg (setOptLevel 1))
1310 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1311 , Flag "Odph" (noArg setDPHOpt)
1312 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1313 -- If the number is missing, use 1
1315 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1316 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1317 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1318 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1319 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1320 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1321 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1322 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1323 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1324 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1325 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1327 ------ Profiling ----------------------------------------------------
1329 -- XXX Should the -f* flags be deprecated?
1330 -- They don't seem to be documented
1331 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1332 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1333 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1334 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1335 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1336 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1337 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1338 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1339 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1341 ------ DPH flags ----------------------------------------------------
1343 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1344 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1345 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1347 ------ Compiler flags -----------------------------------------------
1349 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1350 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1351 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1352 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1353 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1354 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1356 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1357 setTarget HscNothing))
1358 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1359 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1360 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1361 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1363 ++ map (mkFlag True "f" setDynFlag ) fFlags
1364 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1365 ++ map (mkFlag True "f" setExtensionFlag ) fLangFlags
1366 ++ map (mkFlag False "fno-" unSetExtensionFlag) fLangFlags
1367 ++ map (mkFlag True "X" setExtensionFlag ) xFlags
1368 ++ map (mkFlag False "XNo" unSetExtensionFlag) xFlags
1369 ++ map (mkFlag True "X" setLanguage) languageFlags
1371 package_flags :: [Flag (CmdLineP DynFlags)]
1373 ------- Packages ----------------------------------------------------
1374 Flag "package-conf" (HasArg extraPkgConf_)
1375 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1376 , Flag "package-name" (hasArg setPackageName)
1377 , Flag "package-id" (HasArg exposePackageId)
1378 , Flag "package" (HasArg exposePackage)
1379 , Flag "hide-package" (HasArg hidePackage)
1380 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1381 , Flag "ignore-package" (HasArg ignorePackage)
1382 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1383 ; deprecate "Use -package instead" }))
1387 = ( String -- Flag in string form
1388 , flag -- Flag in internal form
1389 , Bool -> DynP ()) -- Extra action to run when the flag is found
1390 -- Typically, emit a warning or error
1391 -- True <=> we are turning the flag on
1392 -- False <=> we are turning the flag off
1395 mkFlag :: Bool -- ^ True <=> it should be turned on
1396 -> String -- ^ The flag prefix
1397 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1398 -> FlagSpec flag -- ^ Specification of this particular flag
1399 -> Flag (CmdLineP DynFlags)
1400 mkFlag turnOn flagPrefix f (name, flag, extra_action)
1401 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turnOn))
1403 deprecatedForExtension :: String -> Bool -> DynP ()
1404 deprecatedForExtension lang turn_on
1405 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1407 flag | turn_on = lang
1408 | otherwise = "No"++lang
1410 useInstead :: String -> Bool -> DynP ()
1411 useInstead flag turn_on
1412 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1414 no = if turn_on then "" else "no-"
1416 nop :: Bool -> DynP ()
1419 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1420 fFlags :: [FlagSpec DynFlag]
1422 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1423 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1424 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1425 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1426 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1427 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1428 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1429 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1430 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1431 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1432 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1433 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1434 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1435 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1436 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1437 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1438 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1439 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1440 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1441 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1442 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1443 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1444 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1445 ( "warn-orphans", Opt_WarnOrphans, nop ),
1446 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1447 ( "warn-tabs", Opt_WarnTabs, nop ),
1448 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1449 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1450 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1451 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1452 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1453 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1454 ( "strictness", Opt_Strictness, nop ),
1455 ( "specialise", Opt_Specialise, nop ),
1456 ( "float-in", Opt_FloatIn, nop ),
1457 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1458 ( "full-laziness", Opt_FullLaziness, nop ),
1459 ( "liberate-case", Opt_LiberateCase, nop ),
1460 ( "spec-constr", Opt_SpecConstr, nop ),
1461 ( "cse", Opt_CSE, nop ),
1462 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1463 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1464 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1465 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1466 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1467 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1468 ( "case-merge", Opt_CaseMerge, nop ),
1469 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1470 ( "method-sharing", Opt_MethodSharing, nop ),
1471 ( "dicts-cheap", Opt_DictsCheap, nop ),
1472 ( "excess-precision", Opt_ExcessPrecision, nop ),
1473 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1474 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1475 ( "print-bind-result", Opt_PrintBindResult, nop ),
1476 ( "force-recomp", Opt_ForceRecomp, nop ),
1477 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1478 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1479 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1480 ( "break-on-exception", Opt_BreakOnException, nop ),
1481 ( "break-on-error", Opt_BreakOnError, nop ),
1482 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1483 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1484 ( "run-cps", Opt_RunCPS, nop ),
1485 ( "run-cpsz", Opt_RunCPSZ, nop ),
1486 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1487 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1488 ( "vectorise", Opt_Vectorise, nop ),
1489 ( "regs-graph", Opt_RegsGraph, nop ),
1490 ( "regs-iterative", Opt_RegsIterative, nop ),
1491 ( "gen-manifest", Opt_GenManifest, nop ),
1492 ( "embed-manifest", Opt_EmbedManifest, nop ),
1493 ( "ext-core", Opt_EmitExternalCore, nop ),
1494 ( "shared-implib", Opt_SharedImplib, nop ),
1495 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1496 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1497 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1500 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1501 fLangFlags :: [FlagSpec ExtensionFlag]
1503 ( "th", Opt_TemplateHaskell,
1504 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1505 ( "fi", Opt_ForeignFunctionInterface,
1506 deprecatedForExtension "ForeignFunctionInterface" ),
1507 ( "ffi", Opt_ForeignFunctionInterface,
1508 deprecatedForExtension "ForeignFunctionInterface" ),
1509 ( "arrows", Opt_Arrows,
1510 deprecatedForExtension "Arrows" ),
1511 ( "generics", Opt_Generics,
1512 deprecatedForExtension "Generics" ),
1513 ( "implicit-prelude", Opt_ImplicitPrelude,
1514 deprecatedForExtension "ImplicitPrelude" ),
1515 ( "bang-patterns", Opt_BangPatterns,
1516 deprecatedForExtension "BangPatterns" ),
1517 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1518 deprecatedForExtension "MonomorphismRestriction" ),
1519 ( "mono-pat-binds", Opt_MonoPatBinds,
1520 deprecatedForExtension "MonoPatBinds" ),
1521 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1522 deprecatedForExtension "ExtendedDefaultRules" ),
1523 ( "implicit-params", Opt_ImplicitParams,
1524 deprecatedForExtension "ImplicitParams" ),
1525 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1526 deprecatedForExtension "ScopedTypeVariables" ),
1528 deprecatedForExtension "PArr" ),
1529 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1530 deprecatedForExtension "OverlappingInstances" ),
1531 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1532 deprecatedForExtension "UndecidableInstances" ),
1533 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1534 deprecatedForExtension "IncoherentInstances" )
1537 supportedLanguages :: [String]
1538 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1540 supportedExtensions :: [String]
1541 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1543 supportedLanguagesAndExtensions :: [String]
1544 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1546 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1547 languageFlags :: [FlagSpec Language]
1549 ( "Haskell98", Haskell98, nop ),
1550 ( "Haskell2010", Haskell2010, nop )
1553 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1554 xFlags :: [FlagSpec ExtensionFlag]
1556 ( "CPP", Opt_Cpp, nop ),
1557 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1558 ( "TupleSections", Opt_TupleSections, nop ),
1559 ( "PatternGuards", Opt_PatternGuards, nop ),
1560 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1561 ( "MagicHash", Opt_MagicHash, nop ),
1562 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1563 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1564 ( "KindSignatures", Opt_KindSignatures, nop ),
1565 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1566 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1567 ( "TransformListComp", Opt_TransformListComp, nop ),
1568 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1569 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1570 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1571 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1572 ( "Rank2Types", Opt_Rank2Types, nop ),
1573 ( "RankNTypes", Opt_RankNTypes, nop ),
1574 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1575 ( "TypeOperators", Opt_TypeOperators, nop ),
1576 ( "RecursiveDo", Opt_RecursiveDo,
1577 deprecatedForExtension "DoRec"),
1578 ( "DoRec", Opt_DoRec, nop ),
1579 ( "Arrows", Opt_Arrows, nop ),
1580 ( "PArr", Opt_PArr, nop ),
1581 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1582 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1583 ( "Generics", Opt_Generics, nop ),
1584 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1585 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1586 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1587 ( "RecordPuns", Opt_RecordPuns,
1588 deprecatedForExtension "NamedFieldPuns" ),
1589 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1590 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1591 ( "GADTs", Opt_GADTs, nop ),
1592 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1593 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1594 ( "BangPatterns", Opt_BangPatterns, nop ),
1595 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1596 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1597 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1598 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1599 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1600 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1601 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1602 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1603 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1604 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1605 \ turn_on -> if not turn_on
1606 then deprecate "You can't turn off RelaxedPolyRec any more"
1608 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1609 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1610 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1612 ( "PatternSignatures", Opt_ScopedTypeVariables,
1613 deprecatedForExtension "ScopedTypeVariables" ),
1615 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1616 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1617 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1618 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1619 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1620 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1621 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1622 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1623 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1624 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1625 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1626 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1627 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1628 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1629 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1630 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1631 ( "PackageImports", Opt_PackageImports, nop ),
1632 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1633 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1636 defaultFlags :: [DynFlag]
1638 = [ Opt_AutoLinkPackages,
1639 Opt_ReadUserPackageConf,
1649 Opt_PrintBindContents,
1653 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1654 -- The default -O0 options
1658 impliedFlags :: [(ExtensionFlag, ExtensionFlag)]
1660 = [ (Opt_RankNTypes, Opt_ExplicitForAll)
1661 , (Opt_Rank2Types, Opt_ExplicitForAll)
1662 , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
1663 , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
1664 , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
1665 , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
1667 , (Opt_GADTs, Opt_MonoLocalBinds)
1668 , (Opt_TypeFamilies, Opt_MonoLocalBinds)
1670 , (Opt_TypeFamilies, Opt_KindSignatures) -- Type families use kind signatures
1671 -- all over the place
1673 , (Opt_ImpredicativeTypes, Opt_RankNTypes)
1675 -- Record wild-cards implies field disambiguation
1676 -- Otherwise if you write (C {..}) you may well get
1677 -- stuff like " 'a' not in scope ", which is a bit silly
1678 -- if the compiler has just filled in field 'a' of constructor 'C'
1679 , (Opt_RecordWildCards, Opt_DisambiguateRecordFields)
1682 optLevelFlags :: [([Int], DynFlag)]
1684 = [ ([0], Opt_IgnoreInterfacePragmas)
1685 , ([0], Opt_OmitInterfacePragmas)
1687 , ([1,2], Opt_IgnoreAsserts)
1688 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1690 , ([1,2], Opt_DoEtaReduction)
1691 , ([1,2], Opt_CaseMerge)
1692 , ([1,2], Opt_Strictness)
1694 , ([1,2], Opt_FullLaziness)
1695 , ([1,2], Opt_Specialise)
1696 , ([1,2], Opt_FloatIn)
1698 , ([2], Opt_LiberateCase)
1699 , ([2], Opt_SpecConstr)
1700 , ([2], Opt_RegsGraph)
1702 -- , ([2], Opt_StaticArgumentTransformation)
1703 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1704 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1705 -- several improvements to the heuristics, and I'm concerned that without
1706 -- those changes SAT will interfere with some attempts to write "high
1707 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1708 -- this year. In particular, the version in HEAD lacks the tail call
1709 -- criterion, so many things that look like reasonable loops will be
1710 -- turned into functions with extra (unneccesary) thunk creation.
1712 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1713 -- This one is important for a tiresome reason:
1714 -- we want to make sure that the bindings for data
1715 -- constructors are eta-expanded. This is probably
1716 -- a good thing anyway, but it seems fragile.
1719 -- -----------------------------------------------------------------------------
1720 -- Standard sets of warning options
1722 standardWarnings :: [DynFlag]
1724 = [ Opt_WarnWarningsDeprecations,
1725 Opt_WarnDeprecatedFlags,
1726 Opt_WarnUnrecognisedPragmas,
1727 Opt_WarnOverlappingPatterns,
1728 Opt_WarnMissingFields,
1729 Opt_WarnMissingMethods,
1730 Opt_WarnDuplicateExports,
1731 Opt_WarnLazyUnliftedBindings,
1732 Opt_WarnDodgyForeignImports,
1733 Opt_WarnWrongDoBind,
1734 Opt_WarnAlternativeLayoutRuleTransitional
1737 minusWOpts :: [DynFlag]
1739 = standardWarnings ++
1740 [ Opt_WarnUnusedBinds,
1741 Opt_WarnUnusedMatches,
1742 Opt_WarnUnusedImports,
1743 Opt_WarnIncompletePatterns,
1744 Opt_WarnDodgyExports,
1745 Opt_WarnDodgyImports
1748 minusWallOpts :: [DynFlag]
1751 [ Opt_WarnTypeDefaults,
1752 Opt_WarnNameShadowing,
1753 Opt_WarnMissingSigs,
1756 Opt_WarnUnusedDoBind
1759 -- minuswRemovesOpts should be every warning option
1760 minuswRemovesOpts :: [DynFlag]
1763 [Opt_WarnImplicitPrelude,
1764 Opt_WarnIncompletePatternsRecUpd,
1765 Opt_WarnMonomorphism,
1766 Opt_WarnUnrecognisedPragmas,
1767 Opt_WarnAutoOrphans,
1771 enableGlasgowExts :: DynP ()
1772 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1773 mapM_ setExtensionFlag glasgowExtsFlags
1775 disableGlasgowExts :: DynP ()
1776 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1777 mapM_ unSetExtensionFlag glasgowExtsFlags
1779 glasgowExtsFlags :: [ExtensionFlag]
1780 glasgowExtsFlags = [
1781 Opt_ForeignFunctionInterface
1782 , Opt_UnliftedFFITypes
1783 , Opt_ImplicitParams
1784 , Opt_ScopedTypeVariables
1786 , Opt_TypeSynonymInstances
1787 , Opt_StandaloneDeriving
1788 , Opt_DeriveDataTypeable
1790 , Opt_DeriveFoldable
1791 , Opt_DeriveTraversable
1792 , Opt_FlexibleContexts
1793 , Opt_FlexibleInstances
1794 , Opt_ConstrainedClassMethods
1795 , Opt_MultiParamTypeClasses
1796 , Opt_FunctionalDependencies
1798 , Opt_PolymorphicComponents
1799 , Opt_ExistentialQuantification
1801 , Opt_PostfixOperators
1803 , Opt_LiberalTypeSynonyms
1807 , Opt_ParallelListComp
1808 , Opt_EmptyDataDecls
1809 , Opt_KindSignatures
1810 , Opt_GeneralizedNewtypeDeriving ]
1813 -- Consult the RTS to find whether GHC itself has been built profiled
1814 -- If so, you can't use Template Haskell
1815 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1817 rtsIsProfiled :: Bool
1818 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1820 checkTemplateHaskellOk :: Bool -> DynP ()
1821 checkTemplateHaskellOk turn_on
1822 | turn_on && rtsIsProfiled
1823 = addErr "You can't use Template Haskell with a profiled compiler"
1827 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1828 -- so we simply say "ok". It doesn't matter because TH isn't
1829 -- available in stage 1 anyway.
1830 checkTemplateHaskellOk turn_on = return ()
1833 {- **********************************************************************
1835 DynFlags constructors
1837 %********************************************************************* -}
1839 type DynP = EwM (CmdLineP DynFlags)
1841 upd :: (DynFlags -> DynFlags) -> DynP ()
1842 upd f = liftEwM (do { dfs <- getCmdLineState
1843 ; putCmdLineState $! (f dfs) })
1845 --------------- Constructor functions for OptKind -----------------
1846 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1847 noArg fn = NoArg (upd fn)
1849 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1850 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1852 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1853 hasArg fn = HasArg (upd . fn)
1855 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1856 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1857 ; deprecate deprec })
1859 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1860 intSuffix fn = IntSuffix (\n -> upd (fn n))
1862 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1863 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1865 --------------------------
1866 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1867 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1868 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1870 --------------------------
1871 setLanguage :: Language -> DynP ()
1872 setLanguage l = upd (\dfs -> dfs { language = Just l })
1874 --------------------------
1875 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1876 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1877 ; mapM_ setExtensionFlag deps }
1879 deps = [ d | (f', d) <- impliedFlags, f' == f ]
1880 -- When you set f, set the ones it implies
1881 -- NB: use setExtensionFlag recursively, in case the implied flags
1882 -- implies further flags
1883 -- When you un-set f, however, we don't un-set the things it implies
1884 -- (except for -fno-glasgow-exts, which is treated specially)
1886 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1888 --------------------------
1889 setDumpFlag' :: DynFlag -> DynP ()
1890 setDumpFlag' dump_flag
1891 = do { setDynFlag dump_flag
1892 ; when want_recomp forceRecompile }
1894 -- Certain dumpy-things are really interested in what's going
1895 -- on during recompilation checking, so in those cases we
1896 -- don't want to turn it off.
1897 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1898 Opt_D_dump_hi_diffs]
1900 forceRecompile :: DynP ()
1901 -- Whenver we -ddump, force recompilation (by switching off the
1902 -- recompilation checker), else you don't see the dump! However,
1903 -- don't switch it off in --make mode, else *everything* gets
1904 -- recompiled which probably isn't what you want
1905 forceRecompile = do { dfs <- liftEwM getCmdLineState
1906 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1908 force_recomp dfs = isOneShot (ghcMode dfs)
1910 setVerboseCore2Core :: DynP ()
1911 setVerboseCore2Core = do forceRecompile
1912 setDynFlag Opt_D_verbose_core2core
1913 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1916 setDumpSimplPhases :: String -> DynP ()
1917 setDumpSimplPhases s = do forceRecompile
1918 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1920 spec = case s of { ('=' : s') -> s'; _ -> s }
1922 setVerbosity :: Maybe Int -> DynP ()
1923 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1925 addCmdlineHCInclude :: String -> DynP ()
1926 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1928 extraPkgConf_ :: FilePath -> DynP ()
1929 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1931 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1933 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1935 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1937 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1939 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1941 setPackageName :: String -> DynFlags -> DynFlags
1942 setPackageName p s = s{ thisPackage = stringToPackageId p }
1944 -- If we're linking a binary, then only targets that produce object
1945 -- code are allowed (requests for other target types are ignored).
1946 setTarget :: HscTarget -> DynP ()
1947 setTarget l = upd set
1950 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1953 -- Changes the target only if we're compiling object code. This is
1954 -- used by -fasm and -fvia-C, which switch from one to the other, but
1955 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1956 -- can be safely used in an OPTIONS_GHC pragma.
1957 setObjTarget :: HscTarget -> DynP ()
1958 setObjTarget l = upd set
1961 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1964 setOptLevel :: Int -> DynFlags -> DynFlags
1965 setOptLevel n dflags
1966 | hscTarget dflags == HscInterpreted && n > 0
1968 -- not in IO any more, oh well:
1969 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1971 = updOptLevel n dflags
1974 -- -Odph is equivalent to
1976 -- -O2 optimise as much as possible
1977 -- -fno-method-sharing sharing specialisation defeats fusion
1979 -- -fdicts-cheap always inline dictionaries
1980 -- -fmax-simplifier-iterations20 this is necessary sometimes
1981 -- -fsimplifier-phases=3 we use an additional simplifier phase
1983 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1984 -- -fno-spec-constr-count SpecConstr as much as possible
1985 -- -finline-enough-args hack to prevent excessive inlining
1987 setDPHOpt :: DynFlags -> DynFlags
1988 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1990 , specConstrThreshold = Nothing
1991 , specConstrCount = Nothing
1993 `dopt_set` Opt_DictsCheap
1994 `dopt_unset` Opt_MethodSharing
1996 data DPHBackend = DPHPar
1999 deriving(Eq, Ord, Enum, Show)
2001 setDPHBackend :: DPHBackend -> DynP ()
2002 setDPHBackend backend
2004 upd $ \dflags -> dflags { dphBackend = backend }
2005 mapM_ exposePackage (dph_packages backend)
2007 dph_packages DPHThis = []
2008 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2009 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2011 dphPackage :: DynFlags -> PackageId
2012 dphPackage dflags = case dphBackend dflags of
2013 DPHPar -> dphParPackageId
2014 DPHSeq -> dphSeqPackageId
2015 DPHThis -> thisPackage dflags
2017 setMainIs :: String -> DynP ()
2019 | not (null main_fn) && isLower (head main_fn)
2020 -- The arg looked like "Foo.Bar.baz"
2021 = upd $ \d -> d{ mainFunIs = Just main_fn,
2022 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2024 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2025 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2027 | otherwise -- The arg looked like "baz"
2028 = upd $ \d -> d{ mainFunIs = Just arg }
2030 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2032 -----------------------------------------------------------------------------
2033 -- Paths & Libraries
2035 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2037 -- -i on its own deletes the import paths
2038 addImportPath "" = upd (\s -> s{importPaths = []})
2039 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2043 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2046 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2048 addFrameworkPath p =
2049 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2051 #ifndef mingw32_TARGET_OS
2052 split_marker :: Char
2053 split_marker = ':' -- not configurable (ToDo)
2056 splitPathList :: String -> [String]
2057 splitPathList s = filter notNull (splitUp s)
2058 -- empty paths are ignored: there might be a trailing
2059 -- ':' in the initial list, for example. Empty paths can
2060 -- cause confusion when they are translated into -I options
2061 -- for passing to gcc.
2063 #ifndef mingw32_TARGET_OS
2064 splitUp xs = split split_marker xs
2066 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2068 -- That is, if "foo:bar:baz" is used, this interpreted as
2069 -- consisting of three entries, 'foo', 'bar', 'baz'.
2070 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2071 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2073 -- Notice that no attempt is made to fully replace the 'standard'
2074 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2075 -- that this will cause too much breakage for users & ':' will
2076 -- work fine even with DOS paths, if you're not insisting on being silly.
2079 splitUp (x:':':div:xs) | div `elem` dir_markers
2080 = ((x:':':div:p): splitUp rs)
2082 (p,rs) = findNextPath xs
2083 -- we used to check for existence of the path here, but that
2084 -- required the IO monad to be threaded through the command-line
2085 -- parser which is quite inconvenient. The
2086 splitUp xs = cons p (splitUp rs)
2088 (p,rs) = findNextPath xs
2093 -- will be called either when we've consumed nought or the
2094 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2095 -- finding the next split marker.
2097 case break (`elem` split_markers) xs of
2098 (p, _:ds) -> (p, ds)
2101 split_markers :: [Char]
2102 split_markers = [':', ';']
2104 dir_markers :: [Char]
2105 dir_markers = ['/', '\\']
2108 -- -----------------------------------------------------------------------------
2109 -- tmpDir, where we store temporary files.
2111 setTmpDir :: FilePath -> DynFlags -> DynFlags
2112 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2113 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2114 -- seem necessary now --SDM 7/2/2008
2116 -----------------------------------------------------------------------------
2119 setRtsOpts :: String -> DynP ()
2120 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2122 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2123 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2125 -----------------------------------------------------------------------------
2128 setOptHpcDir :: String -> DynP ()
2129 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2131 -----------------------------------------------------------------------------
2132 -- Via-C compilation stuff
2134 -- There are some options that we need to pass to gcc when compiling
2135 -- Haskell code via C, but are only supported by recent versions of
2136 -- gcc. The configure script decides which of these options we need,
2137 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2138 -- read before each via-C compilation. The advantage of having these
2139 -- in a separate file is that the file can be created at install-time
2140 -- depending on the available gcc version, and even re-generated later
2141 -- if gcc is upgraded.
2143 -- The options below are not dependent on the version of gcc, only the
2146 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2147 [String]) -- for registerised HC compilations
2148 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2149 in (cCcOpts ++ flagsAll, flagsRegHc)
2151 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2152 [String]) -- for registerised HC compilations
2153 machdepCCOpts' _dflags
2154 #if alpha_TARGET_ARCH
2156 #ifdef HAVE_THREADED_RTS_SUPPORT
2160 -- For now, to suppress the gcc warning "call-clobbered
2161 -- register used for global register variable", we simply
2162 -- disable all warnings altogether using the -w flag. Oh well.
2164 #elif hppa_TARGET_ARCH
2165 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2166 -- (very nice, but too bad the HP /usr/include files don't agree.)
2167 = ( ["-D_HPUX_SOURCE"], [] )
2169 #elif m68k_TARGET_ARCH
2170 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2171 -- popping of args to routines to be explicit; if we let things
2172 -- be deferred 'til after an STGJUMP, imminent death is certain!
2174 -- -fomit-frame-pointer : *don't*
2175 -- It's better to have a6 completely tied up being a frame pointer
2176 -- rather than let GCC pick random things to do with it.
2177 -- (If we want to steal a6, then we would try to do things
2178 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2179 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2181 #elif i386_TARGET_ARCH
2182 -- -fno-defer-pop : basically the same game as for m68k
2184 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2185 -- the fp (%ebp) for our register maps.
2186 = let n_regs = stolen_x86_regs _dflags
2189 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2192 "-fomit-frame-pointer",
2193 -- we want -fno-builtin, because when gcc inlines
2194 -- built-in functions like memcpy() it tends to
2195 -- run out of registers, requiring -monly-n-regs
2197 "-DSTOLEN_X86_REGS="++show n_regs ]
2200 #elif ia64_TARGET_ARCH
2201 = ( [], ["-fomit-frame-pointer", "-G0"] )
2203 #elif x86_64_TARGET_ARCH
2206 ["-fomit-frame-pointer",
2207 "-fno-asynchronous-unwind-tables",
2208 -- the unwind tables are unnecessary for HC code,
2209 -- and get in the way of -split-objs. Another option
2210 -- would be to throw them away in the mangler, but this
2213 -- calling builtins like strlen() using the FFI can
2214 -- cause gcc to run out of regs, so use the external
2218 #elif sparc_TARGET_ARCH
2220 -- For now, to suppress the gcc warning "call-clobbered
2221 -- register used for global register variable", we simply
2222 -- disable all warnings altogether using the -w flag. Oh well.
2224 #elif powerpc_apple_darwin_TARGET
2226 -- Disable Apple's precompiling preprocessor. It's a great thing
2227 -- for "normal" programs, but it doesn't support register variable
2229 = ( [], ["-no-cpp-precomp"] )
2234 picCCOpts :: DynFlags -> [String]
2236 #if darwin_TARGET_OS
2237 -- Apple prefers to do things the other way round.
2238 -- PIC is on by default.
2239 -- -mdynamic-no-pic:
2240 -- Turn off PIC code generation.
2242 -- Don't generate "common" symbols - these are unwanted
2243 -- in dynamic libraries.
2246 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2248 = ["-mdynamic-no-pic"]
2249 #elif mingw32_TARGET_OS
2250 -- no -fPIC for Windows
2252 = ["-U __PIC__","-D__PIC__"]
2256 -- we need -fPIC for C files when we are compiling with -dynamic,
2257 -- otherwise things like stub.c files don't get compiled
2258 -- correctly. They need to reference data in the Haskell
2259 -- objects, but can't without -fPIC. See
2260 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2261 | opt_PIC || not opt_Static
2262 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2267 -- -----------------------------------------------------------------------------
2271 can_split = cSplitObjs == "YES"
2273 -- -----------------------------------------------------------------------------
2276 data Printable = String String
2277 | FromDynFlags (DynFlags -> String)
2279 compilerInfo :: [(String, Printable)]
2280 compilerInfo = [("Project name", String cProjectName),
2281 ("Project version", String cProjectVersion),
2282 ("Booter version", String cBooterVersion),
2283 ("Stage", String cStage),
2284 ("Build platform", String cBuildPlatform),
2285 ("Host platform", String cHostPlatform),
2286 ("Target platform", String cTargetPlatform),
2287 ("Have interpreter", String cGhcWithInterpreter),
2288 ("Object splitting", String cSplitObjs),
2289 ("Have native code generator", String cGhcWithNativeCodeGen),
2290 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2291 ("Use archives for ghci", String (show cUseArchivesForGhci)),
2292 ("Support SMP", String cGhcWithSMP),
2293 ("Unregisterised", String cGhcUnregisterised),
2294 ("Tables next to code", String cGhcEnableTablesNextToCode),
2295 ("RTS ways", String cGhcRTSWays),
2296 ("Leading underscore", String cLeadingUnderscore),
2297 ("Debug on", String (show debugIsOn)),
2298 ("LibDir", FromDynFlags topDir),
2299 ("Global Package DB", FromDynFlags systemPackageConfig)