2 -- Temporary, until rtsIsProfiled is fixed
8 -- (c) The University of Glasgow 2005
11 -- Most flags are dynamic flags, which means they can change from
12 -- compilation to compilation using @OPTIONS_GHC@ pragmas, and in a
13 -- multi-session GHC each session can be using different dynamic
14 -- flags. Dynamic flags can also be set at the prompt in GHCi.
16 -- * Dynamic flags and associated configuration types
28 HscTarget(..), isObjectTarget, defaultObjectTarget,
29 GhcMode(..), isOneShot,
30 GhcLink(..), isNoLink,
34 fFlags, fLangFlags, xFlags,
38 -- ** Manipulating DynFlags
39 defaultDynFlags, -- DynFlags
40 initDynFlags, -- DynFlags -> IO DynFlags
42 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
49 -- ** Parsing DynFlags
51 parseDynamicNoPackageFlags,
54 supportedLanguagesAndExtensions,
56 -- ** DynFlag C compiler options
57 machdepCCOpts, picCCOpts,
59 -- * Configuration of the stg-to-stg passes
63 -- * Compiler configuration suitable for display to the user
67 -- Only in stage 2 can we be sure that the RTS
68 -- exposes the appropriate runtime boolean
73 #include "HsVersions.h"
75 #ifndef OMIT_NATIVE_CODEGEN
80 import PrelNames ( mAIN )
82 import {-# SOURCE #-} Packages (PackageState)
83 import DriverPhases ( Phase(..), phaseInputExt )
86 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
89 import Maybes ( orElse )
93 import Foreign.C ( CInt )
94 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
96 import System.IO.Unsafe ( unsafePerformIO )
98 import Control.Monad ( when )
102 import Data.Map (Map)
103 import qualified Data.Map as Map
104 import System.FilePath
105 import System.IO ( stderr, hPutChar )
107 -- -----------------------------------------------------------------------------
110 -- | Enumerates the simple on-or-off dynamic flags
116 | Opt_D_dump_cmmz_pretty
120 | Opt_D_dump_asm_native
121 | Opt_D_dump_asm_liveness
122 | Opt_D_dump_asm_coalesce
123 | Opt_D_dump_asm_regalloc
124 | Opt_D_dump_asm_regalloc_stages
125 | Opt_D_dump_asm_conflicts
126 | Opt_D_dump_asm_stats
127 | Opt_D_dump_asm_expanded
134 | Opt_D_dump_inlinings
135 | Opt_D_dump_rule_firings
136 | Opt_D_dump_occur_anal
140 | Opt_D_dump_simpl_iterations
141 | Opt_D_dump_simpl_phases
150 | Opt_D_dump_worker_wrapper
151 | Opt_D_dump_rn_trace
152 | Opt_D_dump_rn_stats
154 | Opt_D_dump_simpl_stats
155 | Opt_D_dump_tc_trace
156 | Opt_D_dump_if_trace
163 | Opt_D_verbose_core2core
164 | Opt_D_verbose_stg2stg
166 | Opt_D_dump_hi_diffs
167 | Opt_D_dump_minimal_imports
168 | Opt_D_dump_mod_cycles
169 | Opt_D_dump_view_pattern_commoning
170 | Opt_D_faststring_stats
171 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
172 | Opt_D_no_debug_output
178 | Opt_WarnIsError -- -Werror; makes warnings fatal
179 | Opt_WarnDuplicateExports
181 | Opt_WarnImplicitPrelude
182 | Opt_WarnIncompletePatterns
183 | Opt_WarnIncompletePatternsRecUpd
184 | Opt_WarnMissingFields
185 | Opt_WarnMissingImportList
186 | Opt_WarnMissingMethods
187 | Opt_WarnMissingSigs
188 | Opt_WarnMissingLocalSigs
189 | Opt_WarnNameShadowing
190 | Opt_WarnOverlappingPatterns
191 | Opt_WarnTypeDefaults
192 | Opt_WarnMonomorphism
193 | Opt_WarnUnusedBinds
194 | Opt_WarnUnusedImports
195 | Opt_WarnUnusedMatches
196 | Opt_WarnWarningsDeprecations
197 | Opt_WarnDeprecatedFlags
198 | Opt_WarnDodgyExports
199 | Opt_WarnDodgyImports
201 | Opt_WarnAutoOrphans
204 | Opt_WarnUnrecognisedPragmas
205 | Opt_WarnDodgyForeignImports
206 | Opt_WarnLazyUnliftedBindings
207 | Opt_WarnUnusedDoBind
208 | Opt_WarnWrongDoBind
209 | Opt_WarnAlternativeLayoutRuleTransitional
211 | Opt_PrintExplicitForalls
218 | Opt_StaticArgumentTransformation
222 | Opt_DoLambdaEtaExpansion
226 | Opt_UnboxStrictFields
227 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
229 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
231 | Opt_RegsGraph -- do graph coloring register allocation
232 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
235 | Opt_IgnoreInterfacePragmas
236 | Opt_OmitInterfacePragmas
237 | Opt_ExposeAllUnfoldings
240 | Opt_AutoSccsOnAllToplevs
241 | Opt_AutoSccsOnExportedToplevs
242 | Opt_AutoSccsOnIndividualCafs
249 | Opt_ExcessPrecision
250 | Opt_EagerBlackHoling
251 | Opt_ReadUserPackageConf
255 | Opt_HideAllPackages
256 | Opt_PrintBindResult
260 | Opt_BreakOnException
262 | Opt_PrintEvldWithShow
263 | Opt_PrintBindContents
266 | Opt_EmitExternalCore
268 | Opt_BuildingCabalPackage
275 | Opt_ConvertToZipCfgAndBack
276 | Opt_AutoLinkPackages
277 | Opt_ImplicitImportQualified
286 | Opt_KeepRawTokenStream
291 data Language = Haskell98 | Haskell2010
295 | Opt_OverlappingInstances
296 | Opt_UndecidableInstances
297 | Opt_IncoherentInstances
298 | Opt_MonomorphismRestriction
301 | Opt_RelaxedPolyRec -- Deprecated
302 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
303 | Opt_ForeignFunctionInterface
304 | Opt_UnliftedFFITypes
305 | Opt_GHCForeignImportPrim
306 | Opt_PArr -- Syntactic support for parallel arrays
307 | Opt_Arrows -- Arrow-notation syntax
308 | Opt_TemplateHaskell
311 | Opt_Generics -- "Derivable type classes"
312 | Opt_ImplicitPrelude
313 | Opt_ScopedTypeVariables
317 | Opt_OverloadedStrings
318 | Opt_DisambiguateRecordFields
319 | Opt_RecordWildCards
324 | Opt_DoAndIfThenElse
325 | Opt_RebindableSyntax
327 | Opt_StandaloneDeriving
328 | Opt_DeriveDataTypeable
330 | Opt_DeriveTraversable
333 | Opt_TypeSynonymInstances
334 | Opt_FlexibleContexts
335 | Opt_FlexibleInstances
336 | Opt_ConstrainedClassMethods
337 | Opt_MultiParamTypeClasses
338 | Opt_FunctionalDependencies
340 | Opt_PolymorphicComponents
341 | Opt_ExistentialQuantification
345 | Opt_ParallelListComp
346 | Opt_TransformListComp
347 | Opt_GeneralizedNewtypeDeriving
350 | Opt_PostfixOperators
353 | Opt_LiberalTypeSynonyms
356 | Opt_ImpredicativeTypes
359 | Opt_NewQualifiedOperators
361 | Opt_AlternativeLayoutRule
362 | Opt_AlternativeLayoutRuleTransitional
363 | Opt_DatatypeContexts
364 | Opt_NondecreasingIndentation
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
387 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
388 -- See CoreMonad.FloatOutSwitches
390 #ifndef OMIT_NATIVE_CODEGEN
391 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
393 stolen_x86_regs :: Int,
394 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
395 importPaths :: [FilePath],
397 mainFunIs :: Maybe String,
398 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
400 dphBackend :: DPHBackend,
402 thisPackage :: PackageId, -- ^ name of package currently being compiled
405 ways :: [Way], -- ^ Way flags from the command line
406 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
407 rtsBuildTag :: String, -- ^ The RTS \"way\"
409 -- For object splitting
410 splitInfo :: Maybe (String,Int),
413 objectDir :: Maybe String,
414 dylibInstallName :: Maybe String,
415 hiDir :: Maybe String,
416 stubDir :: Maybe String,
422 outputFile :: Maybe String,
423 outputHi :: Maybe String,
424 dynLibLoader :: DynLibLoader,
426 -- | This is set by 'DriverPipeline.runPipeline' based on where
427 -- its output is going.
428 dumpPrefix :: Maybe FilePath,
430 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
431 -- Set by @-ddump-file-prefix@
432 dumpPrefixForce :: Maybe FilePath,
434 includePaths :: [String],
435 libraryPaths :: [String],
436 frameworkPaths :: [String], -- used on darwin only
437 cmdlineFrameworks :: [String], -- ditto
438 tmpDir :: String, -- no trailing '/'
440 ghcUsagePath :: FilePath, -- Filled in by SysTools
441 ghciUsagePath :: FilePath, -- ditto
442 rtsOpts :: Maybe String,
443 rtsOptsEnabled :: RtsOptsEnabled,
445 hpcDir :: String, -- ^ Path to store the .mix files
447 -- options for particular phases
455 opt_windres :: [String],
456 opt_lo :: [String], -- LLVM: llvm optimiser
457 opt_lc :: [String], -- LLVM: llc static compiler
459 -- commands for particular phases
461 pgm_P :: (String,[Option]),
463 pgm_c :: (String,[Option]),
464 pgm_m :: (String,[Option]),
465 pgm_s :: (String,[Option]),
466 pgm_a :: (String,[Option]),
467 pgm_l :: (String,[Option]),
468 pgm_dll :: (String,[Option]),
470 pgm_sysman :: String,
471 pgm_windres :: String,
472 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
473 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
476 depMakefile :: FilePath,
477 depIncludePkgDeps :: Bool,
478 depExcludeMods :: [ModuleName],
479 depSuffixes :: [String],
482 extraPkgConfs :: [FilePath],
483 topDir :: FilePath, -- filled in by SysTools
484 systemPackageConfig :: FilePath, -- ditto
485 -- ^ The @-package-conf@ flags given on the command line, in the order
488 packageFlags :: [PackageFlag],
489 -- ^ The @-package@ and @-hide-package@ flags from the command-line
492 -- NB. do not modify this field, it is calculated by
493 -- Packages.initPackages and Packages.updatePackages.
494 pkgDatabase :: Maybe [PackageConfig],
495 pkgState :: PackageState,
498 -- These have to be IORefs, because the defaultCleanupHandler needs to
499 -- know what to clean when an exception happens
500 filesToClean :: IORef [FilePath],
501 dirsToClean :: IORef (Map FilePath FilePath),
505 -- Don't change this without updating extensionFlags:
506 language :: Maybe Language,
507 -- Don't change this without updating extensionFlags:
508 extensions :: [OnOff ExtensionFlag],
509 -- extensionFlags should always be equal to
510 -- flattenExtensionFlags language extensions
511 extensionFlags :: [ExtensionFlag],
513 -- | Message output action: use "ErrUtils" instead of this if you can
514 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
516 haddockOptions :: Maybe String
519 wayNames :: DynFlags -> [WayName]
520 wayNames = map wayName . ways
522 -- | The target code type of the compilation (if any).
524 -- Whenever you change the target, also make sure to set 'ghcLink' to
525 -- something sensible.
527 -- 'HscNothing' can be used to avoid generating any output, however, note
530 -- * This will not run the desugaring step, thus no warnings generated in
531 -- this step will be output. In particular, this includes warnings related
532 -- to pattern matching. You can run the desugarer manually using
533 -- 'GHC.desugarModule'.
535 -- * If a program uses Template Haskell the typechecker may try to run code
536 -- from an imported module. This will fail if no code has been generated
537 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
538 -- whether this might be the case and choose to either switch to a
539 -- different target or avoid typechecking such modules. (The latter may
540 -- preferable for security reasons.)
543 = HscC -- ^ Generate C code.
544 | HscAsm -- ^ Generate assembly using the native code generator.
545 | HscLlvm -- ^ Generate assembly using the llvm code generator.
546 | HscJava -- ^ Generate Java bytecode.
547 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
548 | HscNothing -- ^ Don't generate any code. See notes above.
551 -- | Will this target result in an object file on the disk?
552 isObjectTarget :: HscTarget -> Bool
553 isObjectTarget HscC = True
554 isObjectTarget HscAsm = True
555 isObjectTarget HscLlvm = True
556 isObjectTarget _ = False
558 -- | The 'GhcMode' tells us whether we're doing multi-module
559 -- compilation (controlled via the "GHC" API) or one-shot
560 -- (single-module) compilation. This makes a difference primarily to
561 -- the "Finder": in one-shot mode we look for interface files for
562 -- imported modules, but in multi-module mode we look for source files
563 -- in order to check whether they need to be recompiled.
565 = CompManager -- ^ @\-\-make@, GHCi, etc.
566 | OneShot -- ^ @ghc -c Foo.hs@
567 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
570 instance Outputable GhcMode where
571 ppr CompManager = ptext (sLit "CompManager")
572 ppr OneShot = ptext (sLit "OneShot")
573 ppr MkDepend = ptext (sLit "MkDepend")
575 isOneShot :: GhcMode -> Bool
576 isOneShot OneShot = True
577 isOneShot _other = False
579 -- | What to do in the link step, if there is one.
581 = NoLink -- ^ Don't link at all
582 | LinkBinary -- ^ Link object code into a binary
583 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
584 -- bytecode and object code).
585 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
588 isNoLink :: GhcLink -> Bool
589 isNoLink NoLink = True
592 -- Is it worth evaluating this Bool and caching it in the DynFlags value
593 -- during initDynFlags?
594 doingTickyProfiling :: DynFlags -> Bool
595 doingTickyProfiling _ = opt_Ticky
596 -- XXX -ticky is a static flag, because it implies -debug which is also
597 -- static. If the way flags were made dynamic, we could fix this.
600 = ExposePackage String
601 | ExposePackageId String
603 | IgnorePackage String
606 defaultHscTarget :: HscTarget
607 defaultHscTarget = defaultObjectTarget
609 -- | The 'HscTarget' value corresponding to the default way to create
610 -- object files on the current platform.
611 defaultObjectTarget :: HscTarget
613 | cGhcWithNativeCodeGen == "YES" = HscAsm
621 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
623 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
624 initDynFlags :: DynFlags -> IO DynFlags
625 initDynFlags dflags = do
626 -- someday these will be dynamic flags
627 ways <- readIORef v_Ways
628 refFilesToClean <- newIORef []
629 refDirsToClean <- newIORef Map.empty
632 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
633 rtsBuildTag = mkBuildTag ways,
634 filesToClean = refFilesToClean,
635 dirsToClean = refDirsToClean
638 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
639 -- and must be fully initialized by 'GHC.newSession' first.
640 defaultDynFlags :: DynFlags
643 ghcMode = CompManager,
644 ghcLink = LinkBinary,
645 hscTarget = defaultHscTarget,
651 maxSimplIterations = 4,
652 shouldDumpSimplPhase = Nothing,
654 specConstrThreshold = Just 200,
655 specConstrCount = Just 3,
656 liberateCaseThreshold = Just 200,
657 floatLamArgs = Just 0, -- Default: float only if no fvs
658 strictnessBefore = [],
660 #ifndef OMIT_NATIVE_CODEGEN
661 targetPlatform = defaultTargetPlatform,
664 cmdlineHcIncludes = [],
668 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
672 thisPackage = mainPackageId,
675 dylibInstallName = Nothing,
679 objectSuf = phaseInputExt StopLn,
680 hcSuf = phaseInputExt HCc,
683 outputFile = Nothing,
685 dynLibLoader = SystemDependent,
686 dumpPrefix = Nothing,
687 dumpPrefixForce = Nothing,
691 cmdlineFrameworks = [],
692 tmpDir = cDEFAULT_TMPDIR,
694 rtsOptsEnabled = RtsOptsSafeOnly,
700 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
713 pkgDatabase = Nothing,
714 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
715 ways = panic "defaultDynFlags: No ways",
716 buildTag = panic "defaultDynFlags: No buildTag",
717 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
719 -- initSysTools fills all these in
720 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
721 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
722 topDir = panic "defaultDynFlags: No topDir",
723 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
724 pgm_L = panic "defaultDynFlags: No pgm_L",
725 pgm_P = panic "defaultDynFlags: No pgm_P",
726 pgm_F = panic "defaultDynFlags: No pgm_F",
727 pgm_c = panic "defaultDynFlags: No pgm_c",
728 pgm_m = panic "defaultDynFlags: No pgm_m",
729 pgm_s = panic "defaultDynFlags: No pgm_s",
730 pgm_a = panic "defaultDynFlags: No pgm_a",
731 pgm_l = panic "defaultDynFlags: No pgm_l",
732 pgm_dll = panic "defaultDynFlags: No pgm_dll",
733 pgm_T = panic "defaultDynFlags: No pgm_T",
734 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
735 pgm_windres = panic "defaultDynFlags: No pgm_windres",
736 pgm_lo = panic "defaultDynFlags: No pgm_lo",
737 pgm_lc = panic "defaultDynFlags: No pgm_lc",
738 -- end of initSysTools values
740 depMakefile = "Makefile",
741 depIncludePkgDeps = False,
744 -- end of ghc -M values
745 filesToClean = panic "defaultDynFlags: No filesToClean",
746 dirsToClean = panic "defaultDynFlags: No dirsToClean",
747 haddockOptions = Nothing,
748 flags = defaultFlags,
751 extensionFlags = flattenExtensionFlags Nothing [],
753 log_action = \severity srcSpan style msg ->
755 SevOutput -> printOutput (msg style)
756 SevInfo -> printErrs (msg style)
757 SevFatal -> printErrs (msg style)
760 printErrs ((mkLocMessage srcSpan msg) style)
761 -- careful (#2302): printErrs prints in UTF-8, whereas
762 -- converting to string first and using hPutStr would
763 -- just emit the low 8 bits of each unicode char.
767 Note [Verbosity levels]
768 ~~~~~~~~~~~~~~~~~~~~~~~
769 0 | print errors & warnings only
770 1 | minimal verbosity: print "compiling M ... done." for each module.
771 2 | equivalent to -dshow-passes
772 3 | equivalent to existing "ghc -v"
773 4 | "ghc -v -ddump-most"
774 5 | "ghc -v -ddump-all"
780 -- OnOffs accumulate in reverse order, so we use foldr in order to
781 -- process them in the right order
782 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
784 flattenExtensionFlags ml = foldr f defaultExtensionFlags
785 where f (On f) flags = f : delete f flags
786 f (Off f) flags = delete f flags
787 defaultExtensionFlags = languageExtensions ml
789 languageExtensions :: Maybe Language -> [ExtensionFlag]
791 languageExtensions Nothing
792 -- Nothing => the default case
793 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
794 -- behaviour the default, to see if anyone notices
796 -- In due course I'd like Opt_MonoLocalBinds to be on by default
797 -- But NB it's implied by GADTs etc
798 -- SLPJ September 2010
799 : Opt_NondecreasingIndentation -- This has been on by default for some time
800 : Opt_RelaxedLayout -- This has been on by default for some time
801 : languageExtensions (Just Haskell2010)
803 languageExtensions (Just Haskell98)
804 = [Opt_ImplicitPrelude,
805 Opt_MonomorphismRestriction,
807 Opt_DatatypeContexts]
809 languageExtensions (Just Haskell2010)
810 = [Opt_ImplicitPrelude,
811 Opt_MonomorphismRestriction,
812 Opt_DatatypeContexts,
814 Opt_ForeignFunctionInterface,
819 -- | Test whether a 'DynFlag' is set
820 dopt :: DynFlag -> DynFlags -> Bool
821 dopt f dflags = f `elem` (flags dflags)
824 dopt_set :: DynFlags -> DynFlag -> DynFlags
825 dopt_set dfs f = dfs{ flags = f : flags dfs }
827 -- | Unset a 'DynFlag'
828 dopt_unset :: DynFlags -> DynFlag -> DynFlags
829 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
831 -- | Test whether a 'ExtensionFlag' is set
832 xopt :: ExtensionFlag -> DynFlags -> Bool
833 xopt f dflags = f `elem` extensionFlags dflags
835 -- | Set a 'ExtensionFlag'
836 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
838 = let onoffs = On f : extensions dfs
839 in dfs { extensions = onoffs,
840 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
842 -- | Unset a 'ExtensionFlag'
843 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
845 = let onoffs = Off f : extensions dfs
846 in dfs { extensions = onoffs,
847 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
849 setLanguage :: Language -> DynP ()
850 setLanguage l = upd f
851 where f dfs = let mLang = Just l
852 oneoffs = extensions dfs
855 extensionFlags = flattenExtensionFlags mLang oneoffs
858 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
859 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
860 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
861 -> [a] -- ^ Correctly ordered extracted options
862 getOpts dflags opts = reverse (opts dflags)
863 -- We add to the options from the front, so we need to reverse the list
865 -- | Gets the verbosity flag for the current verbosity level. This is fed to
866 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
867 getVerbFlag :: DynFlags -> String
869 | verbosity dflags >= 3 = "-v"
872 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
873 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
874 setPgmP, addOptl, addOptP,
875 addCmdlineFramework, addHaddockOpts
876 :: String -> DynFlags -> DynFlags
877 setOutputFile, setOutputHi, setDumpPrefixForce
878 :: Maybe String -> DynFlags -> DynFlags
880 setObjectDir f d = d{ objectDir = Just f}
881 setHiDir f d = d{ hiDir = Just f}
882 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
883 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
884 -- \#included from the .hc file when compiling with -fvia-C.
885 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
886 setDylibInstallName f d = d{ dylibInstallName = Just f}
888 setObjectSuf f d = d{ objectSuf = f}
889 setHiSuf f d = d{ hiSuf = f}
890 setHcSuf f d = d{ hcSuf = f}
892 setOutputFile f d = d{ outputFile = f}
893 setOutputHi f d = d{ outputHi = f}
895 parseDynLibLoaderMode f d =
897 ("deploy", "") -> d{ dynLibLoader = Deployable }
898 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
899 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
901 setDumpPrefixForce f d = d { dumpPrefixForce = f}
903 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
904 -- Config.hs should really use Option.
905 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
906 addOptl f d = d{ opt_l = f : opt_l d}
907 addOptP f d = d{ opt_P = f : opt_P d}
910 setDepMakefile :: FilePath -> DynFlags -> DynFlags
911 setDepMakefile f d = d { depMakefile = deOptDep f }
913 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
914 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
916 addDepExcludeMod :: String -> DynFlags -> DynFlags
918 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
920 addDepSuffix :: FilePath -> DynFlags -> DynFlags
921 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
924 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
925 -- we need to strip the "-optdep" off of the arg
926 deOptDep :: String -> String
927 deOptDep x = case stripPrefix "-optdep" x of
931 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
933 addHaddockOpts f d = d{ haddockOptions = Just f}
935 -- -----------------------------------------------------------------------------
936 -- Command-line options
938 -- | When invoking external tools as part of the compilation pipeline, we
939 -- pass these a sequence of options on the command-line. Rather than
940 -- just using a list of Strings, we use a type that allows us to distinguish
941 -- between filepaths and 'other stuff'. The reason for this is that
942 -- this type gives us a handle on transforming filenames, and filenames only,
943 -- to whatever format they're expected to be on a particular platform.
945 = FileOption -- an entry that _contains_ filename(s) / filepaths.
946 String -- a non-filepath prefix that shouldn't be
947 -- transformed (e.g., "/out=")
948 String -- the filepath/filename portion
951 showOpt :: Option -> String
952 showOpt (FileOption pre f) = pre ++ f
953 showOpt (Option s) = s
955 -----------------------------------------------------------------------------
956 -- Setting the optimisation level
958 updOptLevel :: Int -> DynFlags -> DynFlags
959 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
961 = dfs2{ optLevel = final_n }
963 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
964 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
965 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
967 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
968 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
970 -- -----------------------------------------------------------------------------
971 -- StgToDo: abstraction of stg-to-stg passes to run.
974 = StgDoMassageForProfiling -- should be (next to) last
975 -- There's also setStgVarInfo, but its absolute "lastness"
976 -- is so critical that it is hardwired in (no flag).
979 getStgToDo :: DynFlags -> [StgToDo]
983 stg_stats = dopt Opt_StgStats dflags
985 todo1 = if stg_stats then [D_stg_stats] else []
987 todo2 | WayProf `elem` wayNames dflags
988 = StgDoMassageForProfiling : todo1
992 {- **********************************************************************
996 %********************************************************************* -}
998 -- -----------------------------------------------------------------------------
999 -- Parsing the dynamic flags.
1001 -- | Parse dynamic flags from a list of command line arguments. Returns the
1002 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1003 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1004 -- flags or missing arguments).
1005 parseDynamicFlags :: Monad m =>
1006 DynFlags -> [Located String]
1007 -> m (DynFlags, [Located String], [Located String])
1008 -- ^ Updated 'DynFlags', left-over arguments, and
1009 -- list of warnings.
1010 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1012 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1013 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1014 parseDynamicNoPackageFlags :: Monad m =>
1015 DynFlags -> [Located String]
1016 -> m (DynFlags, [Located String], [Located String])
1017 -- ^ Updated 'DynFlags', left-over arguments, and
1018 -- list of warnings.
1019 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1021 parseDynamicFlags_ :: Monad m =>
1022 DynFlags -> [Located String] -> Bool
1023 -> m (DynFlags, [Located String], [Located String])
1024 parseDynamicFlags_ dflags0 args pkg_flags = do
1025 -- XXX Legacy support code
1026 -- We used to accept things like
1027 -- optdep-f -optdepdepend
1028 -- optdep-f -optdep depend
1029 -- optdep -f -optdepdepend
1030 -- optdep -f -optdep depend
1031 -- but the spaces trip up proper argument handling. So get rid of them.
1032 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1033 f (x : xs) = x : f xs
1037 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1038 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1039 | otherwise = dynamic_flags
1041 let ((leftover, errs, warns), dflags1)
1042 = runCmdLine (processArgs flag_spec args') dflags0
1043 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1045 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1046 -- isn't up to the job. We know that if hscTarget == HscC, then the
1047 -- user has explicitly used -fvia-C, because -fasm is the default,
1048 -- unless there is no NCG on this platform. The latter case is
1049 -- checked when the -fPIC flag is parsed.
1051 let (pic_warns, dflags2)
1052 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1053 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1054 dflags1{ hscTarget = HscAsm })
1055 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1056 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1057 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1058 ++ "dynamic on this platform;\n ignoring -fllvm"],
1059 dflags1{ hscTarget = HscAsm })
1061 | otherwise = ([], dflags1)
1063 return (dflags2, leftover, pic_warns ++ warns)
1066 {- **********************************************************************
1068 DynFlags specifications
1070 %********************************************************************* -}
1072 allFlags :: [String]
1073 allFlags = map ('-':) $
1074 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1075 map ("fno-"++) flags ++
1076 map ("f"++) flags ++
1077 map ("f"++) flags' ++
1078 map ("X"++) supportedExtensions
1079 where ok (PrefixPred _ _) = False
1081 flags = [ name | (name, _, _) <- fFlags ]
1082 flags' = [ name | (name, _, _) <- fLangFlags ]
1084 --------------- The main flags themselves ------------------
1085 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1087 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1088 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1089 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1091 (HasArg (\s -> do { addCmdlineHCInclude s
1092 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1093 , Flag "v" (OptIntSuffix setVerbosity)
1095 ------- Specific phases --------------------------------------------
1096 -- need to appear before -pgmL to be parsed as LLVM flags.
1097 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1098 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1099 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1100 , Flag "pgmP" (hasArg setPgmP)
1101 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1102 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1103 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1104 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1105 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1106 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1107 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1108 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1110 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1111 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1112 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1113 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1114 , Flag "optP" (hasArg addOptP)
1115 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1116 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1117 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1118 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1119 , Flag "optl" (hasArg addOptl)
1120 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1123 (NoArg (if can_split
1124 then setDynFlag Opt_SplitObjs
1125 else addWarn "ignoring -fsplit-objs"))
1127 -------- ghc -M -----------------------------------------------------
1128 , Flag "dep-suffix" (hasArg addDepSuffix)
1129 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1130 , Flag "dep-makefile" (hasArg setDepMakefile)
1131 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1132 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1133 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1134 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1135 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1136 , Flag "exclude-module" (hasArg addDepExcludeMod)
1137 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1138 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1140 -------- Linking ----------------------------------------------------
1141 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1142 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1143 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1144 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1146 ------- Libraries ---------------------------------------------------
1147 , Flag "L" (Prefix addLibraryPath)
1148 , Flag "l" (AnySuffix (upd . addOptl))
1150 ------- Frameworks --------------------------------------------------
1151 -- -framework-path should really be -F ...
1152 , Flag "framework-path" (HasArg addFrameworkPath)
1153 , Flag "framework" (hasArg addCmdlineFramework)
1155 ------- Output Redirection ------------------------------------------
1156 , Flag "odir" (hasArg setObjectDir)
1157 , Flag "o" (SepArg (upd . setOutputFile . Just))
1158 , Flag "ohi" (hasArg (setOutputHi . Just ))
1159 , Flag "osuf" (hasArg setObjectSuf)
1160 , Flag "hcsuf" (hasArg setHcSuf)
1161 , Flag "hisuf" (hasArg setHiSuf)
1162 , Flag "hidir" (hasArg setHiDir)
1163 , Flag "tmpdir" (hasArg setTmpDir)
1164 , Flag "stubdir" (hasArg setStubDir)
1165 , Flag "outputdir" (hasArg setOutputDir)
1166 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1168 ------- Keeping temporary files -------------------------------------
1169 -- These can be singular (think ghc -c) or plural (think ghc --make)
1170 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1171 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1172 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1173 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1174 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1175 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1176 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1177 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1178 -- This only makes sense as plural
1179 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1181 ------- Miscellaneous ----------------------------------------------
1182 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1183 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1184 , Flag "with-rtsopts" (HasArg setRtsOpts)
1185 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1186 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1187 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1188 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1189 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1190 , Flag "main-is" (SepArg setMainIs)
1191 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1192 , Flag "haddock-opts" (hasArg addHaddockOpts)
1193 , Flag "hpcdir" (SepArg setOptHpcDir)
1195 ------- recompilation checker --------------------------------------
1196 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1197 ; deprecate "Use -fno-force-recomp instead" }))
1198 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1199 ; deprecate "Use -fforce-recomp instead" }))
1201 ------ HsCpp opts ---------------------------------------------------
1202 , Flag "D" (AnySuffix (upd . addOptP))
1203 , Flag "U" (AnySuffix (upd . addOptP))
1205 ------- Include/Import Paths ----------------------------------------
1206 , Flag "I" (Prefix addIncludePath)
1207 , Flag "i" (OptPrefix addImportPath)
1209 ------ Debugging ----------------------------------------------------
1210 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1212 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1213 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1214 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1215 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1216 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1217 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1218 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1219 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1220 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1221 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1222 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1223 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1224 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1225 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1226 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1227 ; setDumpFlag' Opt_D_dump_llvm}))
1228 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1229 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1230 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1231 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1232 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1233 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1234 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1235 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1236 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1237 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1238 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1239 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1240 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1241 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1242 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1243 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1244 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1245 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1246 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1247 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1248 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1249 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1250 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1251 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1252 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1253 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1254 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1255 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1256 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1257 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1258 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1259 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1260 ; setVerboseCore2Core }))
1261 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1262 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1263 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1264 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1265 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1266 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1267 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1268 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1269 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1270 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1271 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1272 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1273 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1274 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1275 , Flag "dshow-passes" (NoArg (do forceRecompile
1276 setVerbosity (Just 2)))
1277 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1279 ------ Machine dependant (-m<blah>) stuff ---------------------------
1281 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1282 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1283 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1284 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1286 ------ Warning opts -------------------------------------------------
1287 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1288 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1289 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1290 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1291 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1292 ; deprecate "Use -w instead" }))
1293 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1295 ------ Optimisation flags ------------------------------------------
1296 , Flag "O" (noArg (setOptLevel 1))
1297 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1298 , Flag "Odph" (noArg setDPHOpt)
1299 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1300 -- If the number is missing, use 1
1302 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1303 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1304 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1305 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1306 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1307 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1308 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1309 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1310 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1311 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1312 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1313 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1314 , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
1316 ------ Profiling ----------------------------------------------------
1318 -- XXX Should the -f* flags be deprecated?
1319 -- They don't seem to be documented
1320 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1321 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1322 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1323 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1324 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1325 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1326 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1327 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1328 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1330 ------ DPH flags ----------------------------------------------------
1332 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1333 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1334 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1336 ------ Compiler flags -----------------------------------------------
1338 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1339 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1340 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1341 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1342 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1343 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1345 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1346 setTarget HscNothing))
1347 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1348 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1349 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1350 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1352 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1353 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1354 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1355 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1356 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1357 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1358 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1360 package_flags :: [Flag (CmdLineP DynFlags)]
1362 ------- Packages ----------------------------------------------------
1363 Flag "package-conf" (HasArg extraPkgConf_)
1364 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1365 , Flag "package-name" (hasArg setPackageName)
1366 , Flag "package-id" (HasArg exposePackageId)
1367 , Flag "package" (HasArg exposePackage)
1368 , Flag "hide-package" (HasArg hidePackage)
1369 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1370 , Flag "ignore-package" (HasArg ignorePackage)
1371 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1372 ; deprecate "Use -package instead" }))
1375 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1376 -- False <=> we are turning the flag off
1377 turnOn :: TurnOnFlag; turnOn = True
1378 turnOff :: TurnOnFlag; turnOff = False
1381 = ( String -- Flag in string form
1382 , flag -- Flag in internal form
1383 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1384 -- Typically, emit a warning or error
1386 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1387 -> String -- ^ The flag prefix
1388 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1389 -> FlagSpec flag -- ^ Specification of this particular flag
1390 -> Flag (CmdLineP DynFlags)
1391 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1392 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1394 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1395 deprecatedForExtension lang turn_on
1396 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1398 flag | turn_on = lang
1399 | otherwise = "No"++lang
1401 useInstead :: String -> TurnOnFlag -> DynP ()
1402 useInstead flag turn_on
1403 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1405 no = if turn_on then "" else "no-"
1407 nop :: TurnOnFlag -> DynP ()
1410 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1411 fFlags :: [FlagSpec DynFlag]
1413 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1414 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1415 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1416 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1417 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1418 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1419 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1420 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1421 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1422 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1423 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1424 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1425 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1426 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1427 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1428 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1429 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1430 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1431 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1432 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1433 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1434 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1435 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1436 ( "warn-orphans", Opt_WarnOrphans, nop ),
1437 ( "warn-identities", Opt_WarnIdentities, nop ),
1438 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1439 ( "warn-tabs", Opt_WarnTabs, nop ),
1440 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1441 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1442 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1443 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1444 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1445 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1446 ( "strictness", Opt_Strictness, nop ),
1447 ( "specialise", Opt_Specialise, nop ),
1448 ( "float-in", Opt_FloatIn, nop ),
1449 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1450 ( "full-laziness", Opt_FullLaziness, nop ),
1451 ( "liberate-case", Opt_LiberateCase, nop ),
1452 ( "spec-constr", Opt_SpecConstr, nop ),
1453 ( "cse", Opt_CSE, nop ),
1454 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1455 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1456 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1457 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1458 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1459 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1460 ( "case-merge", Opt_CaseMerge, nop ),
1461 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1462 ( "method-sharing", Opt_MethodSharing,
1463 \_ -> deprecate "doesn't do anything any more"),
1464 -- Remove altogether in GHC 7.2
1465 ( "dicts-cheap", Opt_DictsCheap, nop ),
1466 ( "excess-precision", Opt_ExcessPrecision, nop ),
1467 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1468 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1469 ( "print-bind-result", Opt_PrintBindResult, nop ),
1470 ( "force-recomp", Opt_ForceRecomp, nop ),
1471 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1472 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1473 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1474 ( "break-on-exception", Opt_BreakOnException, nop ),
1475 ( "break-on-error", Opt_BreakOnError, nop ),
1476 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1477 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1478 ( "run-cps", Opt_RunCPS, nop ),
1479 ( "run-cpsz", Opt_RunCPSZ, nop ),
1480 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1481 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1482 ( "vectorise", Opt_Vectorise, nop ),
1483 ( "regs-graph", Opt_RegsGraph, nop ),
1484 ( "regs-iterative", Opt_RegsIterative, nop ),
1485 ( "gen-manifest", Opt_GenManifest, nop ),
1486 ( "embed-manifest", Opt_EmbedManifest, nop ),
1487 ( "ext-core", Opt_EmitExternalCore, nop ),
1488 ( "shared-implib", Opt_SharedImplib, nop ),
1489 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1490 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1491 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1494 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1495 fLangFlags :: [FlagSpec ExtensionFlag]
1497 ( "th", Opt_TemplateHaskell,
1498 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1499 ( "fi", Opt_ForeignFunctionInterface,
1500 deprecatedForExtension "ForeignFunctionInterface" ),
1501 ( "ffi", Opt_ForeignFunctionInterface,
1502 deprecatedForExtension "ForeignFunctionInterface" ),
1503 ( "arrows", Opt_Arrows,
1504 deprecatedForExtension "Arrows" ),
1505 ( "generics", Opt_Generics,
1506 deprecatedForExtension "Generics" ),
1507 ( "implicit-prelude", Opt_ImplicitPrelude,
1508 deprecatedForExtension "ImplicitPrelude" ),
1509 ( "bang-patterns", Opt_BangPatterns,
1510 deprecatedForExtension "BangPatterns" ),
1511 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1512 deprecatedForExtension "MonomorphismRestriction" ),
1513 ( "mono-pat-binds", Opt_MonoPatBinds,
1514 deprecatedForExtension "MonoPatBinds" ),
1515 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1516 deprecatedForExtension "ExtendedDefaultRules" ),
1517 ( "implicit-params", Opt_ImplicitParams,
1518 deprecatedForExtension "ImplicitParams" ),
1519 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1520 deprecatedForExtension "ScopedTypeVariables" ),
1522 deprecatedForExtension "PArr" ),
1523 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1524 deprecatedForExtension "OverlappingInstances" ),
1525 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1526 deprecatedForExtension "UndecidableInstances" ),
1527 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1528 deprecatedForExtension "IncoherentInstances" )
1531 supportedLanguages :: [String]
1532 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1534 supportedExtensions :: [String]
1535 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1537 supportedLanguagesAndExtensions :: [String]
1538 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1540 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1541 languageFlags :: [FlagSpec Language]
1543 ( "Haskell98", Haskell98, nop ),
1544 ( "Haskell2010", Haskell2010, nop )
1547 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1548 xFlags :: [FlagSpec ExtensionFlag]
1550 ( "CPP", Opt_Cpp, nop ),
1551 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1552 ( "TupleSections", Opt_TupleSections, nop ),
1553 ( "PatternGuards", Opt_PatternGuards, nop ),
1554 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1555 ( "MagicHash", Opt_MagicHash, nop ),
1556 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1557 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1558 ( "KindSignatures", Opt_KindSignatures, nop ),
1559 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1560 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1561 ( "TransformListComp", Opt_TransformListComp, nop ),
1562 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1563 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1564 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1565 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1566 ( "Rank2Types", Opt_Rank2Types, nop ),
1567 ( "RankNTypes", Opt_RankNTypes, nop ),
1568 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1569 ( "TypeOperators", Opt_TypeOperators, nop ),
1570 ( "RecursiveDo", Opt_RecursiveDo,
1571 deprecatedForExtension "DoRec"),
1572 ( "DoRec", Opt_DoRec, nop ),
1573 ( "Arrows", Opt_Arrows, nop ),
1574 ( "PArr", Opt_PArr, nop ),
1575 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1576 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1577 ( "Generics", Opt_Generics, nop ),
1578 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1579 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1580 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1581 ( "RecordPuns", Opt_RecordPuns,
1582 deprecatedForExtension "NamedFieldPuns" ),
1583 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1584 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1585 ( "GADTs", Opt_GADTs, nop ),
1586 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1587 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1588 ( "BangPatterns", Opt_BangPatterns, nop ),
1589 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1590 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1591 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1592 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1593 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1594 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1595 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1596 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1597 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1598 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1599 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1600 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1601 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1602 \ turn_on -> if not turn_on
1603 then deprecate "You can't turn off RelaxedPolyRec any more"
1605 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1606 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1607 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1609 ( "PatternSignatures", Opt_ScopedTypeVariables,
1610 deprecatedForExtension "ScopedTypeVariables" ),
1612 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1613 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1614 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1615 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1616 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1617 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1618 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1619 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1620 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1621 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1622 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1623 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1624 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1625 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1626 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1627 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1628 ( "PackageImports", Opt_PackageImports, nop ),
1629 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1630 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1633 defaultFlags :: [DynFlag]
1635 = [ Opt_AutoLinkPackages,
1636 Opt_ReadUserPackageConf,
1644 Opt_PrintBindContents,
1648 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1649 -- The default -O0 options
1653 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1655 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1656 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1657 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1658 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1659 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1660 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1662 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1664 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1665 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1667 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1668 -- all over the place
1670 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1672 -- Record wild-cards implies field disambiguation
1673 -- Otherwise if you write (C {..}) you may well get
1674 -- stuff like " 'a' not in scope ", which is a bit silly
1675 -- if the compiler has just filled in field 'a' of constructor 'C'
1676 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1679 optLevelFlags :: [([Int], DynFlag)]
1681 = [ ([0], Opt_IgnoreInterfacePragmas)
1682 , ([0], Opt_OmitInterfacePragmas)
1684 , ([1,2], Opt_IgnoreAsserts)
1685 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1687 , ([1,2], Opt_DoEtaReduction)
1688 , ([1,2], Opt_CaseMerge)
1689 , ([1,2], Opt_Strictness)
1691 , ([1,2], Opt_FullLaziness)
1692 , ([1,2], Opt_Specialise)
1693 , ([1,2], Opt_FloatIn)
1695 , ([2], Opt_LiberateCase)
1696 , ([2], Opt_SpecConstr)
1697 , ([2], Opt_RegsGraph)
1699 -- , ([2], Opt_StaticArgumentTransformation)
1700 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1701 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1702 -- several improvements to the heuristics, and I'm concerned that without
1703 -- those changes SAT will interfere with some attempts to write "high
1704 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1705 -- this year. In particular, the version in HEAD lacks the tail call
1706 -- criterion, so many things that look like reasonable loops will be
1707 -- turned into functions with extra (unneccesary) thunk creation.
1709 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1710 -- This one is important for a tiresome reason:
1711 -- we want to make sure that the bindings for data
1712 -- constructors are eta-expanded. This is probably
1713 -- a good thing anyway, but it seems fragile.
1716 -- -----------------------------------------------------------------------------
1717 -- Standard sets of warning options
1719 standardWarnings :: [DynFlag]
1721 = [ Opt_WarnWarningsDeprecations,
1722 Opt_WarnDeprecatedFlags,
1723 Opt_WarnUnrecognisedPragmas,
1724 Opt_WarnOverlappingPatterns,
1725 Opt_WarnMissingFields,
1726 Opt_WarnMissingMethods,
1727 Opt_WarnDuplicateExports,
1728 Opt_WarnLazyUnliftedBindings,
1729 Opt_WarnDodgyForeignImports,
1730 Opt_WarnWrongDoBind,
1731 Opt_WarnAlternativeLayoutRuleTransitional
1734 minusWOpts :: [DynFlag]
1736 = standardWarnings ++
1737 [ Opt_WarnUnusedBinds,
1738 Opt_WarnUnusedMatches,
1739 Opt_WarnUnusedImports,
1740 Opt_WarnIncompletePatterns,
1741 Opt_WarnDodgyExports,
1742 Opt_WarnDodgyImports
1745 minusWallOpts :: [DynFlag]
1748 [ Opt_WarnTypeDefaults,
1749 Opt_WarnNameShadowing,
1750 Opt_WarnMissingSigs,
1753 Opt_WarnUnusedDoBind,
1757 -- minuswRemovesOpts should be every warning option
1758 minuswRemovesOpts :: [DynFlag]
1761 [Opt_WarnImplicitPrelude,
1762 Opt_WarnIncompletePatternsRecUpd,
1763 Opt_WarnMonomorphism,
1764 Opt_WarnUnrecognisedPragmas,
1765 Opt_WarnAutoOrphans,
1769 enableGlasgowExts :: DynP ()
1770 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1771 mapM_ setExtensionFlag glasgowExtsFlags
1773 disableGlasgowExts :: DynP ()
1774 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1775 mapM_ unSetExtensionFlag glasgowExtsFlags
1777 glasgowExtsFlags :: [ExtensionFlag]
1778 glasgowExtsFlags = [
1779 Opt_ForeignFunctionInterface
1780 , Opt_UnliftedFFITypes
1781 , Opt_ImplicitParams
1782 , Opt_ScopedTypeVariables
1784 , Opt_TypeSynonymInstances
1785 , Opt_StandaloneDeriving
1786 , Opt_DeriveDataTypeable
1788 , Opt_DeriveFoldable
1789 , Opt_DeriveTraversable
1790 , Opt_FlexibleContexts
1791 , Opt_FlexibleInstances
1792 , Opt_ConstrainedClassMethods
1793 , Opt_MultiParamTypeClasses
1794 , Opt_FunctionalDependencies
1796 , Opt_PolymorphicComponents
1797 , Opt_ExistentialQuantification
1799 , Opt_PostfixOperators
1801 , Opt_LiberalTypeSynonyms
1805 , Opt_ParallelListComp
1806 , Opt_EmptyDataDecls
1807 , Opt_KindSignatures
1808 , Opt_GeneralizedNewtypeDeriving ]
1811 -- Consult the RTS to find whether GHC itself has been built profiled
1812 -- If so, you can't use Template Haskell
1813 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1815 rtsIsProfiled :: Bool
1816 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1818 checkTemplateHaskellOk :: Bool -> DynP ()
1819 checkTemplateHaskellOk turn_on
1820 | turn_on && rtsIsProfiled
1821 = addErr "You can't use Template Haskell with a profiled compiler"
1825 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1826 -- so we simply say "ok". It doesn't matter because TH isn't
1827 -- available in stage 1 anyway.
1828 checkTemplateHaskellOk turn_on = return ()
1831 {- **********************************************************************
1833 DynFlags constructors
1835 %********************************************************************* -}
1837 type DynP = EwM (CmdLineP DynFlags)
1839 upd :: (DynFlags -> DynFlags) -> DynP ()
1840 upd f = liftEwM (do { dfs <- getCmdLineState
1841 ; putCmdLineState $! (f dfs) })
1843 --------------- Constructor functions for OptKind -----------------
1844 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1845 noArg fn = NoArg (upd fn)
1847 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1848 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1850 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1851 hasArg fn = HasArg (upd . fn)
1853 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1854 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1855 ; deprecate deprec })
1857 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1858 intSuffix fn = IntSuffix (\n -> upd (fn n))
1860 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1861 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1863 --------------------------
1864 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1865 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1866 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1868 --------------------------
1869 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1870 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1873 deps = [ if turn_on then setExtensionFlag d
1874 else unSetExtensionFlag d
1875 | (f', turn_on, d) <- impliedFlags, f' == f ]
1876 -- When you set f, set the ones it implies
1877 -- NB: use setExtensionFlag recursively, in case the implied flags
1878 -- implies further flags
1880 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1881 -- When you un-set f, however, we don't un-set the things it implies
1882 -- (except for -fno-glasgow-exts, which is treated specially)
1884 --------------------------
1885 setDumpFlag' :: DynFlag -> DynP ()
1886 setDumpFlag' dump_flag
1887 = do { setDynFlag dump_flag
1888 ; when want_recomp forceRecompile }
1890 -- Certain dumpy-things are really interested in what's going
1891 -- on during recompilation checking, so in those cases we
1892 -- don't want to turn it off.
1893 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1894 Opt_D_dump_hi_diffs]
1896 forceRecompile :: DynP ()
1897 -- Whenver we -ddump, force recompilation (by switching off the
1898 -- recompilation checker), else you don't see the dump! However,
1899 -- don't switch it off in --make mode, else *everything* gets
1900 -- recompiled which probably isn't what you want
1901 forceRecompile = do { dfs <- liftEwM getCmdLineState
1902 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1904 force_recomp dfs = isOneShot (ghcMode dfs)
1906 setVerboseCore2Core :: DynP ()
1907 setVerboseCore2Core = do forceRecompile
1908 setDynFlag Opt_D_verbose_core2core
1909 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1912 setDumpSimplPhases :: String -> DynP ()
1913 setDumpSimplPhases s = do forceRecompile
1914 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1916 spec = case s of { ('=' : s') -> s'; _ -> s }
1918 setVerbosity :: Maybe Int -> DynP ()
1919 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1921 addCmdlineHCInclude :: String -> DynP ()
1922 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1924 extraPkgConf_ :: FilePath -> DynP ()
1925 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1927 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1929 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1931 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1933 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1935 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1937 setPackageName :: String -> DynFlags -> DynFlags
1938 setPackageName p s = s{ thisPackage = stringToPackageId p }
1940 -- If we're linking a binary, then only targets that produce object
1941 -- code are allowed (requests for other target types are ignored).
1942 setTarget :: HscTarget -> DynP ()
1943 setTarget l = upd set
1946 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1949 -- Changes the target only if we're compiling object code. This is
1950 -- used by -fasm and -fvia-C, which switch from one to the other, but
1951 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1952 -- can be safely used in an OPTIONS_GHC pragma.
1953 setObjTarget :: HscTarget -> DynP ()
1954 setObjTarget l = upd set
1957 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1960 setOptLevel :: Int -> DynFlags -> DynFlags
1961 setOptLevel n dflags
1962 | hscTarget dflags == HscInterpreted && n > 0
1964 -- not in IO any more, oh well:
1965 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1967 = updOptLevel n dflags
1970 -- -Odph is equivalent to
1972 -- -O2 optimise as much as possible
1973 -- -fno-method-sharing sharing specialisation defeats fusion
1975 -- -fdicts-cheap always inline dictionaries
1976 -- -fmax-simplifier-iterations20 this is necessary sometimes
1977 -- -fsimplifier-phases=3 we use an additional simplifier phase
1979 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1980 -- -fno-spec-constr-count SpecConstr as much as possible
1981 -- -finline-enough-args hack to prevent excessive inlining
1983 setDPHOpt :: DynFlags -> DynFlags
1984 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1986 , specConstrThreshold = Nothing
1987 , specConstrCount = Nothing
1989 `dopt_set` Opt_DictsCheap
1991 data DPHBackend = DPHPar
1994 deriving(Eq, Ord, Enum, Show)
1996 setDPHBackend :: DPHBackend -> DynP ()
1997 setDPHBackend backend
1999 upd $ \dflags -> dflags { dphBackend = backend }
2000 mapM_ exposePackage (dph_packages backend)
2002 dph_packages DPHThis = []
2003 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2004 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2006 dphPackage :: DynFlags -> PackageId
2007 dphPackage dflags = case dphBackend dflags of
2008 DPHPar -> dphParPackageId
2009 DPHSeq -> dphSeqPackageId
2010 DPHThis -> thisPackage dflags
2012 setMainIs :: String -> DynP ()
2014 | not (null main_fn) && isLower (head main_fn)
2015 -- The arg looked like "Foo.Bar.baz"
2016 = upd $ \d -> d{ mainFunIs = Just main_fn,
2017 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2019 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2020 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2022 | otherwise -- The arg looked like "baz"
2023 = upd $ \d -> d{ mainFunIs = Just arg }
2025 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2027 -----------------------------------------------------------------------------
2028 -- Paths & Libraries
2030 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2032 -- -i on its own deletes the import paths
2033 addImportPath "" = upd (\s -> s{importPaths = []})
2034 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2038 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2041 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2043 addFrameworkPath p =
2044 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2046 #ifndef mingw32_TARGET_OS
2047 split_marker :: Char
2048 split_marker = ':' -- not configurable (ToDo)
2051 splitPathList :: String -> [String]
2052 splitPathList s = filter notNull (splitUp s)
2053 -- empty paths are ignored: there might be a trailing
2054 -- ':' in the initial list, for example. Empty paths can
2055 -- cause confusion when they are translated into -I options
2056 -- for passing to gcc.
2058 #ifndef mingw32_TARGET_OS
2059 splitUp xs = split split_marker xs
2061 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2063 -- That is, if "foo:bar:baz" is used, this interpreted as
2064 -- consisting of three entries, 'foo', 'bar', 'baz'.
2065 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2066 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2068 -- Notice that no attempt is made to fully replace the 'standard'
2069 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2070 -- that this will cause too much breakage for users & ':' will
2071 -- work fine even with DOS paths, if you're not insisting on being silly.
2074 splitUp (x:':':div:xs) | div `elem` dir_markers
2075 = ((x:':':div:p): splitUp rs)
2077 (p,rs) = findNextPath xs
2078 -- we used to check for existence of the path here, but that
2079 -- required the IO monad to be threaded through the command-line
2080 -- parser which is quite inconvenient. The
2081 splitUp xs = cons p (splitUp rs)
2083 (p,rs) = findNextPath xs
2088 -- will be called either when we've consumed nought or the
2089 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2090 -- finding the next split marker.
2092 case break (`elem` split_markers) xs of
2093 (p, _:ds) -> (p, ds)
2096 split_markers :: [Char]
2097 split_markers = [':', ';']
2099 dir_markers :: [Char]
2100 dir_markers = ['/', '\\']
2103 -- -----------------------------------------------------------------------------
2104 -- tmpDir, where we store temporary files.
2106 setTmpDir :: FilePath -> DynFlags -> DynFlags
2107 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2108 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2109 -- seem necessary now --SDM 7/2/2008
2111 -----------------------------------------------------------------------------
2114 setRtsOpts :: String -> DynP ()
2115 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2117 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2118 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2120 -----------------------------------------------------------------------------
2123 setOptHpcDir :: String -> DynP ()
2124 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2126 -----------------------------------------------------------------------------
2127 -- Via-C compilation stuff
2129 -- There are some options that we need to pass to gcc when compiling
2130 -- Haskell code via C, but are only supported by recent versions of
2131 -- gcc. The configure script decides which of these options we need,
2132 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2133 -- read before each via-C compilation. The advantage of having these
2134 -- in a separate file is that the file can be created at install-time
2135 -- depending on the available gcc version, and even re-generated later
2136 -- if gcc is upgraded.
2138 -- The options below are not dependent on the version of gcc, only the
2141 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2142 [String]) -- for registerised HC compilations
2143 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2144 in (cCcOpts ++ flagsAll, flagsRegHc)
2146 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2147 [String]) -- for registerised HC compilations
2148 machdepCCOpts' _dflags
2149 #if alpha_TARGET_ARCH
2151 #ifdef HAVE_THREADED_RTS_SUPPORT
2155 -- For now, to suppress the gcc warning "call-clobbered
2156 -- register used for global register variable", we simply
2157 -- disable all warnings altogether using the -w flag. Oh well.
2159 #elif hppa_TARGET_ARCH
2160 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2161 -- (very nice, but too bad the HP /usr/include files don't agree.)
2162 = ( ["-D_HPUX_SOURCE"], [] )
2164 #elif m68k_TARGET_ARCH
2165 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2166 -- popping of args to routines to be explicit; if we let things
2167 -- be deferred 'til after an STGJUMP, imminent death is certain!
2169 -- -fomit-frame-pointer : *don't*
2170 -- It's better to have a6 completely tied up being a frame pointer
2171 -- rather than let GCC pick random things to do with it.
2172 -- (If we want to steal a6, then we would try to do things
2173 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2174 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2176 #elif i386_TARGET_ARCH
2177 -- -fno-defer-pop : basically the same game as for m68k
2179 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2180 -- the fp (%ebp) for our register maps.
2181 = let n_regs = stolen_x86_regs _dflags
2184 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2187 "-fomit-frame-pointer",
2188 -- we want -fno-builtin, because when gcc inlines
2189 -- built-in functions like memcpy() it tends to
2190 -- run out of registers, requiring -monly-n-regs
2192 "-DSTOLEN_X86_REGS="++show n_regs ]
2195 #elif ia64_TARGET_ARCH
2196 = ( [], ["-fomit-frame-pointer", "-G0"] )
2198 #elif x86_64_TARGET_ARCH
2201 ["-fomit-frame-pointer",
2202 "-fno-asynchronous-unwind-tables",
2203 -- the unwind tables are unnecessary for HC code,
2204 -- and get in the way of -split-objs. Another option
2205 -- would be to throw them away in the mangler, but this
2208 -- calling builtins like strlen() using the FFI can
2209 -- cause gcc to run out of regs, so use the external
2213 #elif sparc_TARGET_ARCH
2215 -- For now, to suppress the gcc warning "call-clobbered
2216 -- register used for global register variable", we simply
2217 -- disable all warnings altogether using the -w flag. Oh well.
2219 #elif powerpc_apple_darwin_TARGET
2221 -- Disable Apple's precompiling preprocessor. It's a great thing
2222 -- for "normal" programs, but it doesn't support register variable
2224 = ( [], ["-no-cpp-precomp"] )
2229 picCCOpts :: DynFlags -> [String]
2231 #if darwin_TARGET_OS
2232 -- Apple prefers to do things the other way round.
2233 -- PIC is on by default.
2234 -- -mdynamic-no-pic:
2235 -- Turn off PIC code generation.
2237 -- Don't generate "common" symbols - these are unwanted
2238 -- in dynamic libraries.
2241 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2243 = ["-mdynamic-no-pic"]
2244 #elif mingw32_TARGET_OS
2245 -- no -fPIC for Windows
2247 = ["-U __PIC__","-D__PIC__"]
2251 -- we need -fPIC for C files when we are compiling with -dynamic,
2252 -- otherwise things like stub.c files don't get compiled
2253 -- correctly. They need to reference data in the Haskell
2254 -- objects, but can't without -fPIC. See
2255 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2256 | opt_PIC || not opt_Static
2257 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2262 -- -----------------------------------------------------------------------------
2266 can_split = cSplitObjs == "YES"
2268 -- -----------------------------------------------------------------------------
2271 data Printable = String String
2272 | FromDynFlags (DynFlags -> String)
2274 compilerInfo :: [(String, Printable)]
2275 compilerInfo = [("Project name", String cProjectName),
2276 ("Project version", String cProjectVersion),
2277 ("Booter version", String cBooterVersion),
2278 ("Stage", String cStage),
2279 ("Build platform", String cBuildPlatform),
2280 ("Host platform", String cHostPlatform),
2281 ("Target platform", String cTargetPlatform),
2282 ("Have interpreter", String cGhcWithInterpreter),
2283 ("Object splitting", String cSplitObjs),
2284 ("Have native code generator", String cGhcWithNativeCodeGen),
2285 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2286 ("Use archives for ghci", String (show cUseArchivesForGhci)),
2287 ("Support SMP", String cGhcWithSMP),
2288 ("Unregisterised", String cGhcUnregisterised),
2289 ("Tables next to code", String cGhcEnableTablesNextToCode),
2290 ("RTS ways", String cGhcRTSWays),
2291 ("Leading underscore", String cLeadingUnderscore),
2292 ("Debug on", String (show debugIsOn)),
2293 ("LibDir", FromDynFlags topDir),
2294 ("Global Package DB", FromDynFlags systemPackageConfig)