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
328 | Opt_RebindableSyntax
330 | Opt_StandaloneDeriving
331 | Opt_DeriveDataTypeable
333 | Opt_DeriveTraversable
336 | Opt_TypeSynonymInstances
337 | Opt_FlexibleContexts
338 | Opt_FlexibleInstances
339 | Opt_ConstrainedClassMethods
340 | Opt_MultiParamTypeClasses
341 | Opt_FunctionalDependencies
343 | Opt_PolymorphicComponents
344 | Opt_ExistentialQuantification
348 | Opt_ParallelListComp
349 | Opt_TransformListComp
350 | Opt_GeneralizedNewtypeDeriving
353 | Opt_PostfixOperators
356 | Opt_LiberalTypeSynonyms
359 | Opt_ImpredicativeTypes
362 | Opt_NewQualifiedOperators
364 | Opt_AlternativeLayoutRule
365 | Opt_AlternativeLayoutRuleTransitional
366 | Opt_DatatypeContexts
369 -- | Contains not only a collection of 'DynFlag's but also a plethora of
370 -- information relating to the compilation of a single file or GHC session
371 data DynFlags = DynFlags {
374 hscTarget :: HscTarget,
375 hscOutName :: String, -- ^ Name of the output file
376 extCoreName :: String, -- ^ Name of the .hcr output file
377 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
378 optLevel :: Int, -- ^ Optimisation level
379 simplPhases :: Int, -- ^ Number of simplifier phases
380 maxSimplIterations :: Int, -- ^ Max simplifier iterations
381 shouldDumpSimplPhase :: Maybe String,
382 ruleCheck :: Maybe String,
383 strictnessBefore :: [Int], -- ^ Additional demand analysis
385 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
386 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
387 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
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 language :: Maybe Language,
505 extensionFlags :: Either [OnOff ExtensionFlag]
508 -- | Message output action: use "ErrUtils" instead of this if you can
509 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
511 haddockOptions :: Maybe String
514 wayNames :: DynFlags -> [WayName]
515 wayNames = map wayName . ways
517 -- | The target code type of the compilation (if any).
519 -- Whenever you change the target, also make sure to set 'ghcLink' to
520 -- something sensible.
522 -- 'HscNothing' can be used to avoid generating any output, however, note
525 -- * This will not run the desugaring step, thus no warnings generated in
526 -- this step will be output. In particular, this includes warnings related
527 -- to pattern matching. You can run the desugarer manually using
528 -- 'GHC.desugarModule'.
530 -- * If a program uses Template Haskell the typechecker may try to run code
531 -- from an imported module. This will fail if no code has been generated
532 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
533 -- whether this might be the case and choose to either switch to a
534 -- different target or avoid typechecking such modules. (The latter may
535 -- preferable for security reasons.)
538 = HscC -- ^ Generate C code.
539 | HscAsm -- ^ Generate assembly using the native code generator.
540 | HscLlvm -- ^ Generate assembly using the llvm code generator.
541 | HscJava -- ^ Generate Java bytecode.
542 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
543 | HscNothing -- ^ Don't generate any code. See notes above.
546 -- | Will this target result in an object file on the disk?
547 isObjectTarget :: HscTarget -> Bool
548 isObjectTarget HscC = True
549 isObjectTarget HscAsm = True
550 isObjectTarget HscLlvm = True
551 isObjectTarget _ = False
553 -- | The 'GhcMode' tells us whether we're doing multi-module
554 -- compilation (controlled via the "GHC" API) or one-shot
555 -- (single-module) compilation. This makes a difference primarily to
556 -- the "Finder": in one-shot mode we look for interface files for
557 -- imported modules, but in multi-module mode we look for source files
558 -- in order to check whether they need to be recompiled.
560 = CompManager -- ^ @\-\-make@, GHCi, etc.
561 | OneShot -- ^ @ghc -c Foo.hs@
562 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
565 instance Outputable GhcMode where
566 ppr CompManager = ptext (sLit "CompManager")
567 ppr OneShot = ptext (sLit "OneShot")
568 ppr MkDepend = ptext (sLit "MkDepend")
570 isOneShot :: GhcMode -> Bool
571 isOneShot OneShot = True
572 isOneShot _other = False
574 -- | What to do in the link step, if there is one.
576 = NoLink -- ^ Don't link at all
577 | LinkBinary -- ^ Link object code into a binary
578 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
579 -- bytecode and object code).
580 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
583 isNoLink :: GhcLink -> Bool
584 isNoLink NoLink = True
587 -- Is it worth evaluating this Bool and caching it in the DynFlags value
588 -- during initDynFlags?
589 doingTickyProfiling :: DynFlags -> Bool
590 doingTickyProfiling _ = opt_Ticky
591 -- XXX -ticky is a static flag, because it implies -debug which is also
592 -- static. If the way flags were made dynamic, we could fix this.
595 = ExposePackage String
596 | ExposePackageId String
598 | IgnorePackage String
601 defaultHscTarget :: HscTarget
602 defaultHscTarget = defaultObjectTarget
604 -- | The 'HscTarget' value corresponding to the default way to create
605 -- object files on the current platform.
606 defaultObjectTarget :: HscTarget
608 | cGhcWithNativeCodeGen == "YES" = HscAsm
616 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
618 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
619 initDynFlags :: DynFlags -> IO DynFlags
620 initDynFlags dflags = do
621 -- someday these will be dynamic flags
622 ways <- readIORef v_Ways
623 refFilesToClean <- newIORef []
624 refDirsToClean <- newIORef Map.empty
627 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
628 rtsBuildTag = mkBuildTag ways,
629 filesToClean = refFilesToClean,
630 dirsToClean = refDirsToClean
633 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
634 -- and must be fully initialized by 'GHC.newSession' first.
635 defaultDynFlags :: DynFlags
638 ghcMode = CompManager,
639 ghcLink = LinkBinary,
640 hscTarget = defaultHscTarget,
646 maxSimplIterations = 4,
647 shouldDumpSimplPhase = Nothing,
649 specConstrThreshold = Just 200,
650 specConstrCount = Just 3,
651 liberateCaseThreshold = Just 200,
652 strictnessBefore = [],
654 #ifndef OMIT_NATIVE_CODEGEN
655 targetPlatform = defaultTargetPlatform,
658 cmdlineHcIncludes = [],
662 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
666 thisPackage = mainPackageId,
669 dylibInstallName = Nothing,
673 objectSuf = phaseInputExt StopLn,
674 hcSuf = phaseInputExt HCc,
677 outputFile = Nothing,
679 dynLibLoader = SystemDependent,
680 dumpPrefix = Nothing,
681 dumpPrefixForce = Nothing,
685 cmdlineFrameworks = [],
686 tmpDir = cDEFAULT_TMPDIR,
688 rtsOptsEnabled = RtsOptsSafeOnly,
694 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
707 pkgDatabase = Nothing,
708 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
709 ways = panic "defaultDynFlags: No ways",
710 buildTag = panic "defaultDynFlags: No buildTag",
711 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
713 -- initSysTools fills all these in
714 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
715 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
716 topDir = panic "defaultDynFlags: No topDir",
717 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
718 pgm_L = panic "defaultDynFlags: No pgm_L",
719 pgm_P = panic "defaultDynFlags: No pgm_P",
720 pgm_F = panic "defaultDynFlags: No pgm_F",
721 pgm_c = panic "defaultDynFlags: No pgm_c",
722 pgm_m = panic "defaultDynFlags: No pgm_m",
723 pgm_s = panic "defaultDynFlags: No pgm_s",
724 pgm_a = panic "defaultDynFlags: No pgm_a",
725 pgm_l = panic "defaultDynFlags: No pgm_l",
726 pgm_dll = panic "defaultDynFlags: No pgm_dll",
727 pgm_T = panic "defaultDynFlags: No pgm_T",
728 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
729 pgm_windres = panic "defaultDynFlags: No pgm_windres",
730 pgm_lo = panic "defaultDynFlags: No pgm_lo",
731 pgm_lc = panic "defaultDynFlags: No pgm_lc",
732 -- end of initSysTools values
734 depMakefile = "Makefile",
735 depIncludePkgDeps = False,
738 -- end of ghc -M values
739 filesToClean = panic "defaultDynFlags: No filesToClean",
740 dirsToClean = panic "defaultDynFlags: No dirsToClean",
741 haddockOptions = Nothing,
742 flags = defaultFlags,
744 extensionFlags = Left [],
746 log_action = \severity srcSpan style msg ->
748 SevOutput -> printOutput (msg style)
749 SevInfo -> printErrs (msg style)
750 SevFatal -> printErrs (msg style)
753 printErrs ((mkLocMessage srcSpan msg) style)
754 -- careful (#2302): printErrs prints in UTF-8, whereas
755 -- converting to string first and using hPutStr would
756 -- just emit the low 8 bits of each unicode char.
760 Note [Verbosity levels]
761 ~~~~~~~~~~~~~~~~~~~~~~~
762 0 | print errors & warnings only
763 1 | minimal verbosity: print "compiling M ... done." for each module.
764 2 | equivalent to -dshow-passes
765 3 | equivalent to existing "ghc -v"
766 4 | "ghc -v -ddump-most"
767 5 | "ghc -v -ddump-all"
773 flattenExtensionFlags :: DynFlags -> DynFlags
774 flattenExtensionFlags dflags
775 = case extensionFlags dflags of
778 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
781 panic "Flattening already-flattened extension flags"
783 ensureFlattenedExtensionFlags :: DynFlags -> DynFlags
784 ensureFlattenedExtensionFlags dflags
785 = case extensionFlags dflags of
788 extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
793 -- OnOffs accumulate in reverse order, so we use foldr in order to
794 -- process them in the right order
795 flattenExtensionFlags' :: Maybe Language -> [OnOff ExtensionFlag]
797 flattenExtensionFlags' ml = foldr f defaultExtensionFlags
798 where f (On f) flags = f : delete f flags
799 f (Off f) flags = delete f flags
800 defaultExtensionFlags = languageExtensions ml
802 languageExtensions :: Maybe Language -> [ExtensionFlag]
803 languageExtensions Nothing
804 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
805 -- behaviour the default, to see if anyone notices
807 -- In due course I'd like Opt_MonoLocalBinds to be on by default
808 -- But NB it's implied by GADTs etc
809 -- SLPJ September 2010
810 : languageExtensions (Just Haskell2010)
811 languageExtensions (Just Haskell98)
812 = [Opt_ImplicitPrelude,
813 Opt_MonomorphismRestriction,
815 Opt_DatatypeContexts]
816 languageExtensions (Just Haskell2010)
817 = [Opt_ImplicitPrelude,
818 Opt_MonomorphismRestriction,
819 Opt_DatatypeContexts,
821 Opt_ForeignFunctionInterface,
826 -- | Test whether a 'DynFlag' is set
827 dopt :: DynFlag -> DynFlags -> Bool
828 dopt f dflags = f `elem` (flags dflags)
831 dopt_set :: DynFlags -> DynFlag -> DynFlags
832 dopt_set dfs f = dfs{ flags = f : flags dfs }
834 -- | Unset a 'DynFlag'
835 dopt_unset :: DynFlags -> DynFlag -> DynFlags
836 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
838 -- | Test whether a 'ExtensionFlag' is set
839 xopt :: ExtensionFlag -> DynFlags -> Bool
840 xopt f dflags = case extensionFlags dflags of
841 Left _ -> panic ("Testing for extension flag " ++ show f ++ " before flattening")
842 Right flags -> f `elem` flags
844 -- | Set a 'ExtensionFlag'
845 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
846 xopt_set dfs f = case extensionFlags dfs of
847 Left onoffs -> dfs { extensionFlags = Left (On f : onoffs) }
848 Right _ -> panic ("Setting extension flag " ++ show f ++ " after flattening")
850 -- | Set a 'ExtensionFlag'
851 xopt_set_flattened :: DynFlags -> ExtensionFlag -> DynFlags
852 xopt_set_flattened dfs f = case extensionFlags dfs of
854 panic ("Setting extension flag " ++ show f ++ " before flattening, but expected flattened")
856 dfs { extensionFlags = Right (f : delete f flags) }
858 -- | Unset a 'ExtensionFlag'
859 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
860 xopt_unset dfs f = case extensionFlags dfs of
861 Left onoffs -> dfs { extensionFlags = Left (Off f : onoffs) }
862 Right _ -> panic ("Unsetting extension flag " ++ show f ++ " after flattening")
864 -- | Unset a 'ExtensionFlag'
865 xopt_unset_flattened :: DynFlags -> ExtensionFlag -> DynFlags
866 xopt_unset_flattened dfs f = case extensionFlags dfs of
868 panic ("Unsetting extension flag " ++ show f ++ " before flattening, but expected flattened")
870 dfs { extensionFlags = Right (delete f flags) }
872 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
873 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
874 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
875 -> [a] -- ^ Correctly ordered extracted options
876 getOpts dflags opts = reverse (opts dflags)
877 -- We add to the options from the front, so we need to reverse the list
879 -- | Gets the verbosity flag for the current verbosity level. This is fed to
880 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
881 getVerbFlag :: DynFlags -> String
883 | verbosity dflags >= 3 = "-v"
886 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
887 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
888 setPgmP, addOptl, addOptP,
889 addCmdlineFramework, addHaddockOpts
890 :: String -> DynFlags -> DynFlags
891 setOutputFile, setOutputHi, setDumpPrefixForce
892 :: Maybe String -> DynFlags -> DynFlags
894 setObjectDir f d = d{ objectDir = Just f}
895 setHiDir f d = d{ hiDir = Just f}
896 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
897 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
898 -- \#included from the .hc file when compiling with -fvia-C.
899 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
900 setDylibInstallName f d = d{ dylibInstallName = Just f}
902 setObjectSuf f d = d{ objectSuf = f}
903 setHiSuf f d = d{ hiSuf = f}
904 setHcSuf f d = d{ hcSuf = f}
906 setOutputFile f d = d{ outputFile = f}
907 setOutputHi f d = d{ outputHi = f}
909 parseDynLibLoaderMode f d =
911 ("deploy", "") -> d{ dynLibLoader = Deployable }
912 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
913 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
915 setDumpPrefixForce f d = d { dumpPrefixForce = f}
917 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
918 -- Config.hs should really use Option.
919 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
920 addOptl f d = d{ opt_l = f : opt_l d}
921 addOptP f d = d{ opt_P = f : opt_P d}
924 setDepMakefile :: FilePath -> DynFlags -> DynFlags
925 setDepMakefile f d = d { depMakefile = deOptDep f }
927 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
928 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
930 addDepExcludeMod :: String -> DynFlags -> DynFlags
932 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
934 addDepSuffix :: FilePath -> DynFlags -> DynFlags
935 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
938 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
939 -- we need to strip the "-optdep" off of the arg
940 deOptDep :: String -> String
941 deOptDep x = case stripPrefix "-optdep" x of
945 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
947 addHaddockOpts f d = d{ haddockOptions = Just f}
949 -- -----------------------------------------------------------------------------
950 -- Command-line options
952 -- | When invoking external tools as part of the compilation pipeline, we
953 -- pass these a sequence of options on the command-line. Rather than
954 -- just using a list of Strings, we use a type that allows us to distinguish
955 -- between filepaths and 'other stuff'. The reason for this is that
956 -- this type gives us a handle on transforming filenames, and filenames only,
957 -- to whatever format they're expected to be on a particular platform.
959 = FileOption -- an entry that _contains_ filename(s) / filepaths.
960 String -- a non-filepath prefix that shouldn't be
961 -- transformed (e.g., "/out=")
962 String -- the filepath/filename portion
965 showOpt :: Option -> String
966 showOpt (FileOption pre f) = pre ++ f
967 showOpt (Option s) = s
969 -----------------------------------------------------------------------------
970 -- Setting the optimisation level
972 updOptLevel :: Int -> DynFlags -> DynFlags
973 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
975 = dfs2{ optLevel = final_n }
977 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
978 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
979 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
981 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
982 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
984 -- -----------------------------------------------------------------------------
985 -- StgToDo: abstraction of stg-to-stg passes to run.
988 = StgDoMassageForProfiling -- should be (next to) last
989 -- There's also setStgVarInfo, but its absolute "lastness"
990 -- is so critical that it is hardwired in (no flag).
993 getStgToDo :: DynFlags -> [StgToDo]
997 stg_stats = dopt Opt_StgStats dflags
999 todo1 = if stg_stats then [D_stg_stats] else []
1001 todo2 | WayProf `elem` wayNames dflags
1002 = StgDoMassageForProfiling : todo1
1006 {- **********************************************************************
1010 %********************************************************************* -}
1012 -- -----------------------------------------------------------------------------
1013 -- Parsing the dynamic flags.
1015 -- | Parse dynamic flags from a list of command line arguments. Returns the
1016 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1017 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1018 -- flags or missing arguments).
1019 parseDynamicFlags :: Monad m =>
1020 DynFlags -> [Located String]
1021 -> m (DynFlags, [Located String], [Located String])
1022 -- ^ Updated 'DynFlags', left-over arguments, and
1023 -- list of warnings.
1024 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1026 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1027 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1028 parseDynamicNoPackageFlags :: Monad m =>
1029 DynFlags -> [Located String]
1030 -> m (DynFlags, [Located String], [Located String])
1031 -- ^ Updated 'DynFlags', left-over arguments, and
1032 -- list of warnings.
1033 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1035 parseDynamicFlags_ :: Monad m =>
1036 DynFlags -> [Located String] -> Bool
1037 -> m (DynFlags, [Located String], [Located String])
1038 parseDynamicFlags_ dflags0 args pkg_flags = do
1039 -- XXX Legacy support code
1040 -- We used to accept things like
1041 -- optdep-f -optdepdepend
1042 -- optdep-f -optdep depend
1043 -- optdep -f -optdepdepend
1044 -- optdep -f -optdep depend
1045 -- but the spaces trip up proper argument handling. So get rid of them.
1046 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1047 f (x : xs) = x : f xs
1051 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1052 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1053 | otherwise = dynamic_flags
1055 let ((leftover, errs, warns), dflags1)
1056 = runCmdLine (processArgs flag_spec args') dflags0
1057 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1059 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1060 -- isn't up to the job. We know that if hscTarget == HscC, then the
1061 -- user has explicitly used -fvia-C, because -fasm is the default,
1062 -- unless there is no NCG on this platform. The latter case is
1063 -- checked when the -fPIC flag is parsed.
1065 let (pic_warns, dflags2)
1066 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1067 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1068 dflags1{ hscTarget = HscAsm })
1069 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1070 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1071 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1072 ++ "dynamic on this platform;\n ignoring -fllvm"],
1073 dflags1{ hscTarget = HscAsm })
1075 | otherwise = ([], dflags1)
1077 return (dflags2, leftover, pic_warns ++ warns)
1080 {- **********************************************************************
1082 DynFlags specifications
1084 %********************************************************************* -}
1086 allFlags :: [String]
1087 allFlags = map ('-':) $
1088 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1089 map ("fno-"++) flags ++
1090 map ("f"++) flags ++
1091 map ("f"++) flags' ++
1092 map ("X"++) supportedExtensions
1093 where ok (PrefixPred _ _) = False
1095 flags = [ name | (name, _, _) <- fFlags ]
1096 flags' = [ name | (name, _, _) <- fLangFlags ]
1098 --------------- The main flags themselves ------------------
1099 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1101 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1102 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1103 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1105 (HasArg (\s -> do { addCmdlineHCInclude s
1106 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1107 , Flag "v" (OptIntSuffix setVerbosity)
1109 ------- Specific phases --------------------------------------------
1110 -- need to appear before -pgmL to be parsed as LLVM flags.
1111 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1112 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1113 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1114 , Flag "pgmP" (hasArg setPgmP)
1115 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1116 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1117 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1118 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1119 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1120 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1121 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1122 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1124 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1125 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1126 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1127 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1128 , Flag "optP" (hasArg addOptP)
1129 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1130 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1131 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1132 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1133 , Flag "optl" (hasArg addOptl)
1134 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1137 (NoArg (if can_split
1138 then setDynFlag Opt_SplitObjs
1139 else addWarn "ignoring -fsplit-objs"))
1141 -------- ghc -M -----------------------------------------------------
1142 , Flag "dep-suffix" (hasArg addDepSuffix)
1143 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1144 , Flag "dep-makefile" (hasArg setDepMakefile)
1145 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1146 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1147 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1148 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1149 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1150 , Flag "exclude-module" (hasArg addDepExcludeMod)
1151 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1152 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1154 -------- Linking ----------------------------------------------------
1155 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1156 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1157 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1158 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1160 ------- Libraries ---------------------------------------------------
1161 , Flag "L" (Prefix addLibraryPath)
1162 , Flag "l" (AnySuffix (upd . addOptl))
1164 ------- Frameworks --------------------------------------------------
1165 -- -framework-path should really be -F ...
1166 , Flag "framework-path" (HasArg addFrameworkPath)
1167 , Flag "framework" (hasArg addCmdlineFramework)
1169 ------- Output Redirection ------------------------------------------
1170 , Flag "odir" (hasArg setObjectDir)
1171 , Flag "o" (SepArg (upd . setOutputFile . Just))
1172 , Flag "ohi" (hasArg (setOutputHi . Just ))
1173 , Flag "osuf" (hasArg setObjectSuf)
1174 , Flag "hcsuf" (hasArg setHcSuf)
1175 , Flag "hisuf" (hasArg setHiSuf)
1176 , Flag "hidir" (hasArg setHiDir)
1177 , Flag "tmpdir" (hasArg setTmpDir)
1178 , Flag "stubdir" (hasArg setStubDir)
1179 , Flag "outputdir" (hasArg setOutputDir)
1180 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1182 ------- Keeping temporary files -------------------------------------
1183 -- These can be singular (think ghc -c) or plural (think ghc --make)
1184 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1185 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1186 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1187 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1188 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1189 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1190 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1191 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1192 -- This only makes sense as plural
1193 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1195 ------- Miscellaneous ----------------------------------------------
1196 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1197 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1198 , Flag "with-rtsopts" (HasArg setRtsOpts)
1199 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1200 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1201 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1202 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1203 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1204 , Flag "main-is" (SepArg setMainIs)
1205 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1206 , Flag "haddock-opts" (hasArg addHaddockOpts)
1207 , Flag "hpcdir" (SepArg setOptHpcDir)
1209 ------- recompilation checker --------------------------------------
1210 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1211 ; deprecate "Use -fno-force-recomp instead" }))
1212 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1213 ; deprecate "Use -fforce-recomp instead" }))
1215 ------ HsCpp opts ---------------------------------------------------
1216 , Flag "D" (AnySuffix (upd . addOptP))
1217 , Flag "U" (AnySuffix (upd . addOptP))
1219 ------- Include/Import Paths ----------------------------------------
1220 , Flag "I" (Prefix addIncludePath)
1221 , Flag "i" (OptPrefix addImportPath)
1223 ------ Debugging ----------------------------------------------------
1224 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1226 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1227 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1228 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1229 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1230 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1231 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1232 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1233 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1234 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1235 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1236 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1237 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1238 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1239 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1240 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1241 ; setDumpFlag' Opt_D_dump_llvm}))
1242 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1243 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1244 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1245 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1246 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1247 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1248 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1249 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1250 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1251 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1252 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1253 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1254 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1255 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1256 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1257 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1258 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1259 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1260 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1261 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1262 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1263 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1264 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1265 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1266 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1267 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1268 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1269 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1270 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1271 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1272 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1273 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1274 ; setVerboseCore2Core }))
1275 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1276 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1277 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1278 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1279 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1280 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1281 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1282 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1283 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1284 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1285 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1286 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1287 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1288 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1289 , Flag "dshow-passes" (NoArg (do forceRecompile
1290 setVerbosity (Just 2)))
1291 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1293 ------ Machine dependant (-m<blah>) stuff ---------------------------
1295 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1296 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1297 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1298 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1300 ------ Warning opts -------------------------------------------------
1301 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1302 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1303 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1304 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1305 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1306 ; deprecate "Use -w instead" }))
1307 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1309 ------ Optimisation flags ------------------------------------------
1310 , Flag "O" (noArg (setOptLevel 1))
1311 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1312 , Flag "Odph" (noArg setDPHOpt)
1313 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1314 -- If the number is missing, use 1
1316 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1317 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1318 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1319 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1320 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1321 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1322 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1323 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1324 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1325 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1326 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1328 ------ Profiling ----------------------------------------------------
1330 -- XXX Should the -f* flags be deprecated?
1331 -- They don't seem to be documented
1332 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1333 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1334 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1335 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1336 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1337 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1338 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1339 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1340 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1342 ------ DPH flags ----------------------------------------------------
1344 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1345 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1346 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1348 ------ Compiler flags -----------------------------------------------
1350 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1351 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1352 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1353 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1354 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1355 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1357 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1358 setTarget HscNothing))
1359 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1360 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1361 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1362 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1364 ++ map (mkFlag True "f" setDynFlag ) fFlags
1365 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1366 ++ map (mkFlag True "f" setExtensionFlag ) fLangFlags
1367 ++ map (mkFlag False "fno-" unSetExtensionFlag) fLangFlags
1368 ++ map (mkFlag True "X" setExtensionFlag ) xFlags
1369 ++ map (mkFlag False "XNo" unSetExtensionFlag) xFlags
1370 ++ map (mkFlag True "X" setLanguage) languageFlags
1372 package_flags :: [Flag (CmdLineP DynFlags)]
1374 ------- Packages ----------------------------------------------------
1375 Flag "package-conf" (HasArg extraPkgConf_)
1376 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1377 , Flag "package-name" (hasArg setPackageName)
1378 , Flag "package-id" (HasArg exposePackageId)
1379 , Flag "package" (HasArg exposePackage)
1380 , Flag "hide-package" (HasArg hidePackage)
1381 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1382 , Flag "ignore-package" (HasArg ignorePackage)
1383 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1384 ; deprecate "Use -package instead" }))
1388 = ( String -- Flag in string form
1389 , flag -- Flag in internal form
1390 , Bool -> DynP ()) -- Extra action to run when the flag is found
1391 -- Typically, emit a warning or error
1392 -- True <=> we are turning the flag on
1393 -- False <=> we are turning the flag off
1396 mkFlag :: Bool -- ^ True <=> it should be turned on
1397 -> String -- ^ The flag prefix
1398 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1399 -> FlagSpec flag -- ^ Specification of this particular flag
1400 -> Flag (CmdLineP DynFlags)
1401 mkFlag turnOn flagPrefix f (name, flag, extra_action)
1402 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turnOn))
1404 deprecatedForExtension :: String -> Bool -> DynP ()
1405 deprecatedForExtension lang turn_on
1406 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1408 flag | turn_on = lang
1409 | otherwise = "No"++lang
1411 useInstead :: String -> Bool -> DynP ()
1412 useInstead flag turn_on
1413 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1415 no = if turn_on then "" else "no-"
1417 nop :: Bool -> DynP ()
1420 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1421 fFlags :: [FlagSpec DynFlag]
1423 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1424 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1425 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1426 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1427 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1428 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1429 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1430 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1431 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1432 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1433 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1434 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1435 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1436 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1437 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1438 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1439 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1440 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1441 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1442 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1443 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1444 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1445 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1446 ( "warn-orphans", Opt_WarnOrphans, nop ),
1447 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1448 ( "warn-tabs", Opt_WarnTabs, nop ),
1449 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1450 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1451 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1452 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1453 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1454 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1455 ( "strictness", Opt_Strictness, nop ),
1456 ( "specialise", Opt_Specialise, nop ),
1457 ( "float-in", Opt_FloatIn, nop ),
1458 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1459 ( "full-laziness", Opt_FullLaziness, nop ),
1460 ( "liberate-case", Opt_LiberateCase, nop ),
1461 ( "spec-constr", Opt_SpecConstr, nop ),
1462 ( "cse", Opt_CSE, nop ),
1463 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1464 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1465 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1466 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1467 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1468 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1469 ( "case-merge", Opt_CaseMerge, nop ),
1470 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1471 ( "method-sharing", Opt_MethodSharing, nop ),
1472 ( "dicts-cheap", Opt_DictsCheap, nop ),
1473 ( "excess-precision", Opt_ExcessPrecision, nop ),
1474 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1475 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1476 ( "print-bind-result", Opt_PrintBindResult, nop ),
1477 ( "force-recomp", Opt_ForceRecomp, nop ),
1478 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1479 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1480 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1481 ( "break-on-exception", Opt_BreakOnException, nop ),
1482 ( "break-on-error", Opt_BreakOnError, nop ),
1483 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1484 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1485 ( "run-cps", Opt_RunCPS, nop ),
1486 ( "run-cpsz", Opt_RunCPSZ, nop ),
1487 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1488 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1489 ( "vectorise", Opt_Vectorise, nop ),
1490 ( "regs-graph", Opt_RegsGraph, nop ),
1491 ( "regs-iterative", Opt_RegsIterative, nop ),
1492 ( "gen-manifest", Opt_GenManifest, nop ),
1493 ( "embed-manifest", Opt_EmbedManifest, nop ),
1494 ( "ext-core", Opt_EmitExternalCore, nop ),
1495 ( "shared-implib", Opt_SharedImplib, nop ),
1496 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1497 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1498 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1501 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1502 fLangFlags :: [FlagSpec ExtensionFlag]
1504 ( "th", Opt_TemplateHaskell,
1505 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1506 ( "fi", Opt_ForeignFunctionInterface,
1507 deprecatedForExtension "ForeignFunctionInterface" ),
1508 ( "ffi", Opt_ForeignFunctionInterface,
1509 deprecatedForExtension "ForeignFunctionInterface" ),
1510 ( "arrows", Opt_Arrows,
1511 deprecatedForExtension "Arrows" ),
1512 ( "generics", Opt_Generics,
1513 deprecatedForExtension "Generics" ),
1514 ( "implicit-prelude", Opt_ImplicitPrelude,
1515 deprecatedForExtension "ImplicitPrelude" ),
1516 ( "bang-patterns", Opt_BangPatterns,
1517 deprecatedForExtension "BangPatterns" ),
1518 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1519 deprecatedForExtension "MonomorphismRestriction" ),
1520 ( "mono-pat-binds", Opt_MonoPatBinds,
1521 deprecatedForExtension "MonoPatBinds" ),
1522 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1523 deprecatedForExtension "ExtendedDefaultRules" ),
1524 ( "implicit-params", Opt_ImplicitParams,
1525 deprecatedForExtension "ImplicitParams" ),
1526 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1527 deprecatedForExtension "ScopedTypeVariables" ),
1529 deprecatedForExtension "PArr" ),
1530 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1531 deprecatedForExtension "OverlappingInstances" ),
1532 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1533 deprecatedForExtension "UndecidableInstances" ),
1534 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1535 deprecatedForExtension "IncoherentInstances" )
1538 supportedLanguages :: [String]
1539 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1541 supportedExtensions :: [String]
1542 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1544 supportedLanguagesAndExtensions :: [String]
1545 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1547 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1548 languageFlags :: [FlagSpec Language]
1550 ( "Haskell98", Haskell98, nop ),
1551 ( "Haskell2010", Haskell2010, nop )
1554 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1555 xFlags :: [FlagSpec ExtensionFlag]
1557 ( "CPP", Opt_Cpp, nop ),
1558 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1559 ( "TupleSections", Opt_TupleSections, nop ),
1560 ( "PatternGuards", Opt_PatternGuards, nop ),
1561 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1562 ( "MagicHash", Opt_MagicHash, nop ),
1563 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1564 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1565 ( "KindSignatures", Opt_KindSignatures, nop ),
1566 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1567 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1568 ( "TransformListComp", Opt_TransformListComp, nop ),
1569 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1570 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1571 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1572 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1573 ( "Rank2Types", Opt_Rank2Types, nop ),
1574 ( "RankNTypes", Opt_RankNTypes, nop ),
1575 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1576 ( "TypeOperators", Opt_TypeOperators, nop ),
1577 ( "RecursiveDo", Opt_RecursiveDo,
1578 deprecatedForExtension "DoRec"),
1579 ( "DoRec", Opt_DoRec, nop ),
1580 ( "Arrows", Opt_Arrows, nop ),
1581 ( "PArr", Opt_PArr, nop ),
1582 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1583 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1584 ( "Generics", Opt_Generics, nop ),
1585 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1586 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1587 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1588 ( "RecordPuns", Opt_RecordPuns,
1589 deprecatedForExtension "NamedFieldPuns" ),
1590 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1591 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1592 ( "GADTs", Opt_GADTs, nop ),
1593 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1594 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1595 ( "BangPatterns", Opt_BangPatterns, nop ),
1596 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1597 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1598 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1599 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1600 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1601 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1602 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1603 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1604 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1605 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1606 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1607 \ turn_on -> if not turn_on
1608 then deprecate "You can't turn off RelaxedPolyRec any more"
1610 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1611 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1612 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1614 ( "PatternSignatures", Opt_ScopedTypeVariables,
1615 deprecatedForExtension "ScopedTypeVariables" ),
1617 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1618 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1619 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1620 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1621 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1622 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1623 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1624 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1625 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1626 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1627 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1628 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1629 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1630 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1631 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1632 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1633 ( "PackageImports", Opt_PackageImports, nop ),
1634 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1635 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1638 defaultFlags :: [DynFlag]
1640 = [ Opt_AutoLinkPackages,
1641 Opt_ReadUserPackageConf,
1651 Opt_PrintBindContents,
1655 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1656 -- The default -O0 options
1660 impliedFlags :: [(ExtensionFlag, ExtensionFlag)]
1662 = [ (Opt_RankNTypes, Opt_ExplicitForAll)
1663 , (Opt_Rank2Types, Opt_ExplicitForAll)
1664 , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
1665 , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
1666 , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
1667 , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
1669 , (Opt_RebindableSyntax, Opt_ImplicitPrelude)
1671 , (Opt_GADTs, Opt_MonoLocalBinds)
1672 , (Opt_TypeFamilies, Opt_MonoLocalBinds)
1674 , (Opt_TypeFamilies, Opt_KindSignatures) -- Type families use kind signatures
1675 -- all over the place
1677 , (Opt_ImpredicativeTypes, Opt_RankNTypes)
1679 -- Record wild-cards implies field disambiguation
1680 -- Otherwise if you write (C {..}) you may well get
1681 -- stuff like " 'a' not in scope ", which is a bit silly
1682 -- if the compiler has just filled in field 'a' of constructor 'C'
1683 , (Opt_RecordWildCards, Opt_DisambiguateRecordFields)
1686 optLevelFlags :: [([Int], DynFlag)]
1688 = [ ([0], Opt_IgnoreInterfacePragmas)
1689 , ([0], Opt_OmitInterfacePragmas)
1691 , ([1,2], Opt_IgnoreAsserts)
1692 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1694 , ([1,2], Opt_DoEtaReduction)
1695 , ([1,2], Opt_CaseMerge)
1696 , ([1,2], Opt_Strictness)
1698 , ([1,2], Opt_FullLaziness)
1699 , ([1,2], Opt_Specialise)
1700 , ([1,2], Opt_FloatIn)
1702 , ([2], Opt_LiberateCase)
1703 , ([2], Opt_SpecConstr)
1704 , ([2], Opt_RegsGraph)
1706 -- , ([2], Opt_StaticArgumentTransformation)
1707 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1708 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1709 -- several improvements to the heuristics, and I'm concerned that without
1710 -- those changes SAT will interfere with some attempts to write "high
1711 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1712 -- this year. In particular, the version in HEAD lacks the tail call
1713 -- criterion, so many things that look like reasonable loops will be
1714 -- turned into functions with extra (unneccesary) thunk creation.
1716 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1717 -- This one is important for a tiresome reason:
1718 -- we want to make sure that the bindings for data
1719 -- constructors are eta-expanded. This is probably
1720 -- a good thing anyway, but it seems fragile.
1723 -- -----------------------------------------------------------------------------
1724 -- Standard sets of warning options
1726 standardWarnings :: [DynFlag]
1728 = [ Opt_WarnWarningsDeprecations,
1729 Opt_WarnDeprecatedFlags,
1730 Opt_WarnUnrecognisedPragmas,
1731 Opt_WarnOverlappingPatterns,
1732 Opt_WarnMissingFields,
1733 Opt_WarnMissingMethods,
1734 Opt_WarnDuplicateExports,
1735 Opt_WarnLazyUnliftedBindings,
1736 Opt_WarnDodgyForeignImports,
1737 Opt_WarnWrongDoBind,
1738 Opt_WarnAlternativeLayoutRuleTransitional
1741 minusWOpts :: [DynFlag]
1743 = standardWarnings ++
1744 [ Opt_WarnUnusedBinds,
1745 Opt_WarnUnusedMatches,
1746 Opt_WarnUnusedImports,
1747 Opt_WarnIncompletePatterns,
1748 Opt_WarnDodgyExports,
1749 Opt_WarnDodgyImports
1752 minusWallOpts :: [DynFlag]
1755 [ Opt_WarnTypeDefaults,
1756 Opt_WarnNameShadowing,
1757 Opt_WarnMissingSigs,
1760 Opt_WarnUnusedDoBind
1763 -- minuswRemovesOpts should be every warning option
1764 minuswRemovesOpts :: [DynFlag]
1767 [Opt_WarnImplicitPrelude,
1768 Opt_WarnIncompletePatternsRecUpd,
1769 Opt_WarnMonomorphism,
1770 Opt_WarnUnrecognisedPragmas,
1771 Opt_WarnAutoOrphans,
1775 enableGlasgowExts :: DynP ()
1776 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1777 mapM_ setExtensionFlag glasgowExtsFlags
1779 disableGlasgowExts :: DynP ()
1780 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1781 mapM_ unSetExtensionFlag glasgowExtsFlags
1783 glasgowExtsFlags :: [ExtensionFlag]
1784 glasgowExtsFlags = [
1785 Opt_ForeignFunctionInterface
1786 , Opt_UnliftedFFITypes
1787 , Opt_ImplicitParams
1788 , Opt_ScopedTypeVariables
1790 , Opt_TypeSynonymInstances
1791 , Opt_StandaloneDeriving
1792 , Opt_DeriveDataTypeable
1794 , Opt_DeriveFoldable
1795 , Opt_DeriveTraversable
1796 , Opt_FlexibleContexts
1797 , Opt_FlexibleInstances
1798 , Opt_ConstrainedClassMethods
1799 , Opt_MultiParamTypeClasses
1800 , Opt_FunctionalDependencies
1802 , Opt_PolymorphicComponents
1803 , Opt_ExistentialQuantification
1805 , Opt_PostfixOperators
1807 , Opt_LiberalTypeSynonyms
1811 , Opt_ParallelListComp
1812 , Opt_EmptyDataDecls
1813 , Opt_KindSignatures
1814 , Opt_GeneralizedNewtypeDeriving ]
1817 -- Consult the RTS to find whether GHC itself has been built profiled
1818 -- If so, you can't use Template Haskell
1819 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1821 rtsIsProfiled :: Bool
1822 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1824 checkTemplateHaskellOk :: Bool -> DynP ()
1825 checkTemplateHaskellOk turn_on
1826 | turn_on && rtsIsProfiled
1827 = addErr "You can't use Template Haskell with a profiled compiler"
1831 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1832 -- so we simply say "ok". It doesn't matter because TH isn't
1833 -- available in stage 1 anyway.
1834 checkTemplateHaskellOk turn_on = return ()
1837 {- **********************************************************************
1839 DynFlags constructors
1841 %********************************************************************* -}
1843 type DynP = EwM (CmdLineP DynFlags)
1845 upd :: (DynFlags -> DynFlags) -> DynP ()
1846 upd f = liftEwM (do { dfs <- getCmdLineState
1847 ; putCmdLineState $! (f dfs) })
1849 --------------- Constructor functions for OptKind -----------------
1850 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1851 noArg fn = NoArg (upd fn)
1853 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1854 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1856 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1857 hasArg fn = HasArg (upd . fn)
1859 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1860 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1861 ; deprecate deprec })
1863 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1864 intSuffix fn = IntSuffix (\n -> upd (fn n))
1866 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1867 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1869 --------------------------
1870 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1871 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1872 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1874 --------------------------
1875 setLanguage :: Language -> DynP ()
1876 setLanguage l = upd (\dfs -> dfs { language = Just l })
1878 --------------------------
1879 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1880 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1881 ; mapM_ setExtensionFlag deps }
1883 deps = [ d | (f', d) <- impliedFlags, f' == f ]
1884 -- When you set f, set the ones it implies
1885 -- NB: use setExtensionFlag recursively, in case the implied flags
1886 -- implies further flags
1887 -- When you un-set f, however, we don't un-set the things it implies
1888 -- (except for -fno-glasgow-exts, which is treated specially)
1890 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1892 --------------------------
1893 setDumpFlag' :: DynFlag -> DynP ()
1894 setDumpFlag' dump_flag
1895 = do { setDynFlag dump_flag
1896 ; when want_recomp forceRecompile }
1898 -- Certain dumpy-things are really interested in what's going
1899 -- on during recompilation checking, so in those cases we
1900 -- don't want to turn it off.
1901 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1902 Opt_D_dump_hi_diffs]
1904 forceRecompile :: DynP ()
1905 -- Whenver we -ddump, force recompilation (by switching off the
1906 -- recompilation checker), else you don't see the dump! However,
1907 -- don't switch it off in --make mode, else *everything* gets
1908 -- recompiled which probably isn't what you want
1909 forceRecompile = do { dfs <- liftEwM getCmdLineState
1910 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1912 force_recomp dfs = isOneShot (ghcMode dfs)
1914 setVerboseCore2Core :: DynP ()
1915 setVerboseCore2Core = do forceRecompile
1916 setDynFlag Opt_D_verbose_core2core
1917 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1920 setDumpSimplPhases :: String -> DynP ()
1921 setDumpSimplPhases s = do forceRecompile
1922 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1924 spec = case s of { ('=' : s') -> s'; _ -> s }
1926 setVerbosity :: Maybe Int -> DynP ()
1927 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1929 addCmdlineHCInclude :: String -> DynP ()
1930 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1932 extraPkgConf_ :: FilePath -> DynP ()
1933 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1935 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1937 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1939 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1941 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1943 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1945 setPackageName :: String -> DynFlags -> DynFlags
1946 setPackageName p s = s{ thisPackage = stringToPackageId p }
1948 -- If we're linking a binary, then only targets that produce object
1949 -- code are allowed (requests for other target types are ignored).
1950 setTarget :: HscTarget -> DynP ()
1951 setTarget l = upd set
1954 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1957 -- Changes the target only if we're compiling object code. This is
1958 -- used by -fasm and -fvia-C, which switch from one to the other, but
1959 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1960 -- can be safely used in an OPTIONS_GHC pragma.
1961 setObjTarget :: HscTarget -> DynP ()
1962 setObjTarget l = upd set
1965 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1968 setOptLevel :: Int -> DynFlags -> DynFlags
1969 setOptLevel n dflags
1970 | hscTarget dflags == HscInterpreted && n > 0
1972 -- not in IO any more, oh well:
1973 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1975 = updOptLevel n dflags
1978 -- -Odph is equivalent to
1980 -- -O2 optimise as much as possible
1981 -- -fno-method-sharing sharing specialisation defeats fusion
1983 -- -fdicts-cheap always inline dictionaries
1984 -- -fmax-simplifier-iterations20 this is necessary sometimes
1985 -- -fsimplifier-phases=3 we use an additional simplifier phase
1987 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1988 -- -fno-spec-constr-count SpecConstr as much as possible
1989 -- -finline-enough-args hack to prevent excessive inlining
1991 setDPHOpt :: DynFlags -> DynFlags
1992 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1994 , specConstrThreshold = Nothing
1995 , specConstrCount = Nothing
1997 `dopt_set` Opt_DictsCheap
1998 `dopt_unset` Opt_MethodSharing
2000 data DPHBackend = DPHPar
2003 deriving(Eq, Ord, Enum, Show)
2005 setDPHBackend :: DPHBackend -> DynP ()
2006 setDPHBackend backend
2008 upd $ \dflags -> dflags { dphBackend = backend }
2009 mapM_ exposePackage (dph_packages backend)
2011 dph_packages DPHThis = []
2012 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2013 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2015 dphPackage :: DynFlags -> PackageId
2016 dphPackage dflags = case dphBackend dflags of
2017 DPHPar -> dphParPackageId
2018 DPHSeq -> dphSeqPackageId
2019 DPHThis -> thisPackage dflags
2021 setMainIs :: String -> DynP ()
2023 | not (null main_fn) && isLower (head main_fn)
2024 -- The arg looked like "Foo.Bar.baz"
2025 = upd $ \d -> d{ mainFunIs = Just main_fn,
2026 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2028 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2029 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2031 | otherwise -- The arg looked like "baz"
2032 = upd $ \d -> d{ mainFunIs = Just arg }
2034 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2036 -----------------------------------------------------------------------------
2037 -- Paths & Libraries
2039 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2041 -- -i on its own deletes the import paths
2042 addImportPath "" = upd (\s -> s{importPaths = []})
2043 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2047 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2050 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2052 addFrameworkPath p =
2053 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2055 #ifndef mingw32_TARGET_OS
2056 split_marker :: Char
2057 split_marker = ':' -- not configurable (ToDo)
2060 splitPathList :: String -> [String]
2061 splitPathList s = filter notNull (splitUp s)
2062 -- empty paths are ignored: there might be a trailing
2063 -- ':' in the initial list, for example. Empty paths can
2064 -- cause confusion when they are translated into -I options
2065 -- for passing to gcc.
2067 #ifndef mingw32_TARGET_OS
2068 splitUp xs = split split_marker xs
2070 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2072 -- That is, if "foo:bar:baz" is used, this interpreted as
2073 -- consisting of three entries, 'foo', 'bar', 'baz'.
2074 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2075 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2077 -- Notice that no attempt is made to fully replace the 'standard'
2078 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2079 -- that this will cause too much breakage for users & ':' will
2080 -- work fine even with DOS paths, if you're not insisting on being silly.
2083 splitUp (x:':':div:xs) | div `elem` dir_markers
2084 = ((x:':':div:p): splitUp rs)
2086 (p,rs) = findNextPath xs
2087 -- we used to check for existence of the path here, but that
2088 -- required the IO monad to be threaded through the command-line
2089 -- parser which is quite inconvenient. The
2090 splitUp xs = cons p (splitUp rs)
2092 (p,rs) = findNextPath xs
2097 -- will be called either when we've consumed nought or the
2098 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2099 -- finding the next split marker.
2101 case break (`elem` split_markers) xs of
2102 (p, _:ds) -> (p, ds)
2105 split_markers :: [Char]
2106 split_markers = [':', ';']
2108 dir_markers :: [Char]
2109 dir_markers = ['/', '\\']
2112 -- -----------------------------------------------------------------------------
2113 -- tmpDir, where we store temporary files.
2115 setTmpDir :: FilePath -> DynFlags -> DynFlags
2116 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2117 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2118 -- seem necessary now --SDM 7/2/2008
2120 -----------------------------------------------------------------------------
2123 setRtsOpts :: String -> DynP ()
2124 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2126 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2127 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2129 -----------------------------------------------------------------------------
2132 setOptHpcDir :: String -> DynP ()
2133 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2135 -----------------------------------------------------------------------------
2136 -- Via-C compilation stuff
2138 -- There are some options that we need to pass to gcc when compiling
2139 -- Haskell code via C, but are only supported by recent versions of
2140 -- gcc. The configure script decides which of these options we need,
2141 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2142 -- read before each via-C compilation. The advantage of having these
2143 -- in a separate file is that the file can be created at install-time
2144 -- depending on the available gcc version, and even re-generated later
2145 -- if gcc is upgraded.
2147 -- The options below are not dependent on the version of gcc, only the
2150 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2151 [String]) -- for registerised HC compilations
2152 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2153 in (cCcOpts ++ flagsAll, flagsRegHc)
2155 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2156 [String]) -- for registerised HC compilations
2157 machdepCCOpts' _dflags
2158 #if alpha_TARGET_ARCH
2160 #ifdef HAVE_THREADED_RTS_SUPPORT
2164 -- For now, to suppress the gcc warning "call-clobbered
2165 -- register used for global register variable", we simply
2166 -- disable all warnings altogether using the -w flag. Oh well.
2168 #elif hppa_TARGET_ARCH
2169 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2170 -- (very nice, but too bad the HP /usr/include files don't agree.)
2171 = ( ["-D_HPUX_SOURCE"], [] )
2173 #elif m68k_TARGET_ARCH
2174 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2175 -- popping of args to routines to be explicit; if we let things
2176 -- be deferred 'til after an STGJUMP, imminent death is certain!
2178 -- -fomit-frame-pointer : *don't*
2179 -- It's better to have a6 completely tied up being a frame pointer
2180 -- rather than let GCC pick random things to do with it.
2181 -- (If we want to steal a6, then we would try to do things
2182 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2183 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2185 #elif i386_TARGET_ARCH
2186 -- -fno-defer-pop : basically the same game as for m68k
2188 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2189 -- the fp (%ebp) for our register maps.
2190 = let n_regs = stolen_x86_regs _dflags
2193 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2196 "-fomit-frame-pointer",
2197 -- we want -fno-builtin, because when gcc inlines
2198 -- built-in functions like memcpy() it tends to
2199 -- run out of registers, requiring -monly-n-regs
2201 "-DSTOLEN_X86_REGS="++show n_regs ]
2204 #elif ia64_TARGET_ARCH
2205 = ( [], ["-fomit-frame-pointer", "-G0"] )
2207 #elif x86_64_TARGET_ARCH
2210 ["-fomit-frame-pointer",
2211 "-fno-asynchronous-unwind-tables",
2212 -- the unwind tables are unnecessary for HC code,
2213 -- and get in the way of -split-objs. Another option
2214 -- would be to throw them away in the mangler, but this
2217 -- calling builtins like strlen() using the FFI can
2218 -- cause gcc to run out of regs, so use the external
2222 #elif sparc_TARGET_ARCH
2224 -- For now, to suppress the gcc warning "call-clobbered
2225 -- register used for global register variable", we simply
2226 -- disable all warnings altogether using the -w flag. Oh well.
2228 #elif powerpc_apple_darwin_TARGET
2230 -- Disable Apple's precompiling preprocessor. It's a great thing
2231 -- for "normal" programs, but it doesn't support register variable
2233 = ( [], ["-no-cpp-precomp"] )
2238 picCCOpts :: DynFlags -> [String]
2240 #if darwin_TARGET_OS
2241 -- Apple prefers to do things the other way round.
2242 -- PIC is on by default.
2243 -- -mdynamic-no-pic:
2244 -- Turn off PIC code generation.
2246 -- Don't generate "common" symbols - these are unwanted
2247 -- in dynamic libraries.
2250 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2252 = ["-mdynamic-no-pic"]
2253 #elif mingw32_TARGET_OS
2254 -- no -fPIC for Windows
2256 = ["-U __PIC__","-D__PIC__"]
2260 -- we need -fPIC for C files when we are compiling with -dynamic,
2261 -- otherwise things like stub.c files don't get compiled
2262 -- correctly. They need to reference data in the Haskell
2263 -- objects, but can't without -fPIC. See
2264 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2265 | opt_PIC || not opt_Static
2266 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2271 -- -----------------------------------------------------------------------------
2275 can_split = cSplitObjs == "YES"
2277 -- -----------------------------------------------------------------------------
2280 data Printable = String String
2281 | FromDynFlags (DynFlags -> String)
2283 compilerInfo :: [(String, Printable)]
2284 compilerInfo = [("Project name", String cProjectName),
2285 ("Project version", String cProjectVersion),
2286 ("Booter version", String cBooterVersion),
2287 ("Stage", String cStage),
2288 ("Build platform", String cBuildPlatform),
2289 ("Host platform", String cHostPlatform),
2290 ("Target platform", String cTargetPlatform),
2291 ("Have interpreter", String cGhcWithInterpreter),
2292 ("Object splitting", String cSplitObjs),
2293 ("Have native code generator", String cGhcWithNativeCodeGen),
2294 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2295 ("Use archives for ghci", String (show cUseArchivesForGhci)),
2296 ("Support SMP", String cGhcWithSMP),
2297 ("Unregisterised", String cGhcUnregisterised),
2298 ("Tables next to code", String cGhcEnableTablesNextToCode),
2299 ("RTS ways", String cGhcRTSWays),
2300 ("Leading underscore", String cLeadingUnderscore),
2301 ("Debug on", String (show debugIsOn)),
2302 ("LibDir", FromDynFlags topDir),
2303 ("Global Package DB", FromDynFlags systemPackageConfig)