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_rule_rewrites
137 | Opt_D_dump_occur_anal
141 | Opt_D_dump_simpl_iterations
142 | Opt_D_dump_simpl_phases
151 | Opt_D_dump_worker_wrapper
152 | Opt_D_dump_rn_trace
153 | Opt_D_dump_rn_stats
155 | Opt_D_dump_simpl_stats
156 | Opt_D_dump_tc_trace
157 | Opt_D_dump_if_trace
164 | Opt_D_verbose_core2core
165 | Opt_D_verbose_stg2stg
167 | Opt_D_dump_hi_diffs
168 | Opt_D_dump_minimal_imports
169 | Opt_D_dump_mod_cycles
170 | Opt_D_dump_view_pattern_commoning
171 | Opt_D_faststring_stats
172 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
173 | Opt_D_no_debug_output
179 | Opt_WarnIsError -- -Werror; makes warnings fatal
180 | Opt_WarnDuplicateExports
182 | Opt_WarnImplicitPrelude
183 | Opt_WarnIncompletePatterns
184 | Opt_WarnIncompletePatternsRecUpd
185 | Opt_WarnMissingFields
186 | Opt_WarnMissingImportList
187 | Opt_WarnMissingMethods
188 | Opt_WarnMissingSigs
189 | Opt_WarnMissingLocalSigs
190 | Opt_WarnNameShadowing
191 | Opt_WarnOverlappingPatterns
192 | Opt_WarnTypeDefaults
193 | Opt_WarnMonomorphism
194 | Opt_WarnUnusedBinds
195 | Opt_WarnUnusedImports
196 | Opt_WarnUnusedMatches
197 | Opt_WarnWarningsDeprecations
198 | Opt_WarnDeprecatedFlags
199 | Opt_WarnDodgyExports
200 | Opt_WarnDodgyImports
202 | Opt_WarnAutoOrphans
205 | Opt_WarnUnrecognisedPragmas
206 | Opt_WarnDodgyForeignImports
207 | Opt_WarnLazyUnliftedBindings
208 | Opt_WarnUnusedDoBind
209 | Opt_WarnWrongDoBind
210 | Opt_WarnAlternativeLayoutRuleTransitional
212 | Opt_PrintExplicitForalls
219 | Opt_StaticArgumentTransformation
223 | Opt_DoLambdaEtaExpansion
227 | Opt_UnboxStrictFields
228 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
230 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
232 | Opt_RegsGraph -- do graph coloring register allocation
233 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
236 | Opt_IgnoreInterfacePragmas
237 | Opt_OmitInterfacePragmas
238 | Opt_ExposeAllUnfoldings
241 | Opt_AutoSccsOnAllToplevs
242 | Opt_AutoSccsOnExportedToplevs
243 | Opt_AutoSccsOnIndividualCafs
250 | Opt_ExcessPrecision
251 | Opt_EagerBlackHoling
252 | Opt_ReadUserPackageConf
256 | Opt_HideAllPackages
257 | Opt_PrintBindResult
261 | Opt_BreakOnException
263 | Opt_PrintEvldWithShow
264 | Opt_PrintBindContents
267 | Opt_EmitExternalCore
269 | Opt_BuildingCabalPackage
276 | Opt_ConvertToZipCfgAndBack
277 | Opt_AutoLinkPackages
278 | Opt_ImplicitImportQualified
287 | Opt_KeepRawTokenStream
292 data Language = Haskell98 | Haskell2010
296 | Opt_OverlappingInstances
297 | Opt_UndecidableInstances
298 | Opt_IncoherentInstances
299 | Opt_MonomorphismRestriction
302 | Opt_RelaxedPolyRec -- Deprecated
303 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
304 | Opt_ForeignFunctionInterface
305 | Opt_UnliftedFFITypes
306 | Opt_GHCForeignImportPrim
307 | Opt_PArr -- Syntactic support for parallel arrays
308 | Opt_Arrows -- Arrow-notation syntax
309 | Opt_TemplateHaskell
312 | Opt_Generics -- "Derivable type classes"
313 | Opt_ImplicitPrelude
314 | Opt_ScopedTypeVariables
318 | Opt_OverloadedStrings
319 | Opt_DisambiguateRecordFields
320 | Opt_RecordWildCards
325 | Opt_DoAndIfThenElse
326 | Opt_RebindableSyntax
328 | Opt_StandaloneDeriving
329 | Opt_DeriveDataTypeable
331 | Opt_DeriveTraversable
334 | Opt_TypeSynonymInstances
335 | Opt_FlexibleContexts
336 | Opt_FlexibleInstances
337 | Opt_ConstrainedClassMethods
338 | Opt_MultiParamTypeClasses
339 | Opt_FunctionalDependencies
341 | Opt_PolymorphicComponents
342 | Opt_ExistentialQuantification
346 | Opt_ParallelListComp
347 | Opt_TransformListComp
348 | Opt_GeneralizedNewtypeDeriving
351 | Opt_PostfixOperators
354 | Opt_LiberalTypeSynonyms
357 | Opt_ImpredicativeTypes
360 | Opt_NewQualifiedOperators
362 | Opt_AlternativeLayoutRule
363 | Opt_AlternativeLayoutRuleTransitional
364 | Opt_DatatypeContexts
365 | Opt_NondecreasingIndentation
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
388 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
389 -- See CoreMonad.FloatOutSwitches
391 #ifndef OMIT_NATIVE_CODEGEN
392 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
394 stolen_x86_regs :: Int,
395 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
396 importPaths :: [FilePath],
398 mainFunIs :: Maybe String,
399 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
401 dphBackend :: DPHBackend,
403 thisPackage :: PackageId, -- ^ name of package currently being compiled
406 ways :: [Way], -- ^ Way flags from the command line
407 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
408 rtsBuildTag :: String, -- ^ The RTS \"way\"
410 -- For object splitting
411 splitInfo :: Maybe (String,Int),
414 objectDir :: Maybe String,
415 dylibInstallName :: Maybe String,
416 hiDir :: Maybe String,
417 stubDir :: Maybe String,
423 outputFile :: Maybe String,
424 outputHi :: Maybe String,
425 dynLibLoader :: DynLibLoader,
427 -- | This is set by 'DriverPipeline.runPipeline' based on where
428 -- its output is going.
429 dumpPrefix :: Maybe FilePath,
431 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
432 -- Set by @-ddump-file-prefix@
433 dumpPrefixForce :: Maybe FilePath,
435 includePaths :: [String],
436 libraryPaths :: [String],
437 frameworkPaths :: [String], -- used on darwin only
438 cmdlineFrameworks :: [String], -- ditto
439 tmpDir :: String, -- no trailing '/'
441 ghcUsagePath :: FilePath, -- Filled in by SysTools
442 ghciUsagePath :: FilePath, -- ditto
443 rtsOpts :: Maybe String,
444 rtsOptsEnabled :: RtsOptsEnabled,
446 hpcDir :: String, -- ^ Path to store the .mix files
448 -- options for particular phases
456 opt_windres :: [String],
457 opt_lo :: [String], -- LLVM: llvm optimiser
458 opt_lc :: [String], -- LLVM: llc static compiler
460 -- commands for particular phases
462 pgm_P :: (String,[Option]),
464 pgm_c :: (String,[Option]),
465 pgm_m :: (String,[Option]),
466 pgm_s :: (String,[Option]),
467 pgm_a :: (String,[Option]),
468 pgm_l :: (String,[Option]),
469 pgm_dll :: (String,[Option]),
471 pgm_sysman :: String,
472 pgm_windres :: String,
473 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
474 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
477 depMakefile :: FilePath,
478 depIncludePkgDeps :: Bool,
479 depExcludeMods :: [ModuleName],
480 depSuffixes :: [String],
483 extraPkgConfs :: [FilePath],
484 topDir :: FilePath, -- filled in by SysTools
485 systemPackageConfig :: FilePath, -- ditto
486 -- ^ The @-package-conf@ flags given on the command line, in the order
489 packageFlags :: [PackageFlag],
490 -- ^ The @-package@ and @-hide-package@ flags from the command-line
493 -- NB. do not modify this field, it is calculated by
494 -- Packages.initPackages and Packages.updatePackages.
495 pkgDatabase :: Maybe [PackageConfig],
496 pkgState :: PackageState,
499 -- These have to be IORefs, because the defaultCleanupHandler needs to
500 -- know what to clean when an exception happens
501 filesToClean :: IORef [FilePath],
502 dirsToClean :: IORef (Map FilePath FilePath),
506 -- Don't change this without updating extensionFlags:
507 language :: Maybe Language,
508 -- Don't change this without updating extensionFlags:
509 extensions :: [OnOff ExtensionFlag],
510 -- extensionFlags should always be equal to
511 -- flattenExtensionFlags language extensions
512 extensionFlags :: [ExtensionFlag],
514 -- | Message output action: use "ErrUtils" instead of this if you can
515 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
517 haddockOptions :: Maybe String
520 wayNames :: DynFlags -> [WayName]
521 wayNames = map wayName . ways
523 -- | The target code type of the compilation (if any).
525 -- Whenever you change the target, also make sure to set 'ghcLink' to
526 -- something sensible.
528 -- 'HscNothing' can be used to avoid generating any output, however, note
531 -- * This will not run the desugaring step, thus no warnings generated in
532 -- this step will be output. In particular, this includes warnings related
533 -- to pattern matching. You can run the desugarer manually using
534 -- 'GHC.desugarModule'.
536 -- * If a program uses Template Haskell the typechecker may try to run code
537 -- from an imported module. This will fail if no code has been generated
538 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
539 -- whether this might be the case and choose to either switch to a
540 -- different target or avoid typechecking such modules. (The latter may
541 -- preferable for security reasons.)
544 = HscC -- ^ Generate C code.
545 | HscAsm -- ^ Generate assembly using the native code generator.
546 | HscLlvm -- ^ Generate assembly using the llvm code generator.
547 | HscJava -- ^ Generate Java bytecode.
548 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
549 | HscNothing -- ^ Don't generate any code. See notes above.
552 -- | Will this target result in an object file on the disk?
553 isObjectTarget :: HscTarget -> Bool
554 isObjectTarget HscC = True
555 isObjectTarget HscAsm = True
556 isObjectTarget HscLlvm = True
557 isObjectTarget _ = False
559 -- | The 'GhcMode' tells us whether we're doing multi-module
560 -- compilation (controlled via the "GHC" API) or one-shot
561 -- (single-module) compilation. This makes a difference primarily to
562 -- the "Finder": in one-shot mode we look for interface files for
563 -- imported modules, but in multi-module mode we look for source files
564 -- in order to check whether they need to be recompiled.
566 = CompManager -- ^ @\-\-make@, GHCi, etc.
567 | OneShot -- ^ @ghc -c Foo.hs@
568 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
571 instance Outputable GhcMode where
572 ppr CompManager = ptext (sLit "CompManager")
573 ppr OneShot = ptext (sLit "OneShot")
574 ppr MkDepend = ptext (sLit "MkDepend")
576 isOneShot :: GhcMode -> Bool
577 isOneShot OneShot = True
578 isOneShot _other = False
580 -- | What to do in the link step, if there is one.
582 = NoLink -- ^ Don't link at all
583 | LinkBinary -- ^ Link object code into a binary
584 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
585 -- bytecode and object code).
586 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
589 isNoLink :: GhcLink -> Bool
590 isNoLink NoLink = True
593 -- Is it worth evaluating this Bool and caching it in the DynFlags value
594 -- during initDynFlags?
595 doingTickyProfiling :: DynFlags -> Bool
596 doingTickyProfiling _ = opt_Ticky
597 -- XXX -ticky is a static flag, because it implies -debug which is also
598 -- static. If the way flags were made dynamic, we could fix this.
601 = ExposePackage String
602 | ExposePackageId String
604 | IgnorePackage String
607 defaultHscTarget :: HscTarget
608 defaultHscTarget = defaultObjectTarget
610 -- | The 'HscTarget' value corresponding to the default way to create
611 -- object files on the current platform.
612 defaultObjectTarget :: HscTarget
614 | cGhcWithNativeCodeGen == "YES" = HscAsm
622 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
624 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
625 initDynFlags :: DynFlags -> IO DynFlags
626 initDynFlags dflags = do
627 -- someday these will be dynamic flags
628 ways <- readIORef v_Ways
629 refFilesToClean <- newIORef []
630 refDirsToClean <- newIORef Map.empty
633 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
634 rtsBuildTag = mkBuildTag ways,
635 filesToClean = refFilesToClean,
636 dirsToClean = refDirsToClean
639 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
640 -- and must be fully initialized by 'GHC.newSession' first.
641 defaultDynFlags :: DynFlags
644 ghcMode = CompManager,
645 ghcLink = LinkBinary,
646 hscTarget = defaultHscTarget,
652 maxSimplIterations = 4,
653 shouldDumpSimplPhase = Nothing,
655 specConstrThreshold = Just 200,
656 specConstrCount = Just 3,
657 liberateCaseThreshold = Just 200,
658 floatLamArgs = Just 0, -- Default: float only if no fvs
659 strictnessBefore = [],
661 #ifndef OMIT_NATIVE_CODEGEN
662 targetPlatform = defaultTargetPlatform,
665 cmdlineHcIncludes = [],
669 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
673 thisPackage = mainPackageId,
676 dylibInstallName = Nothing,
680 objectSuf = phaseInputExt StopLn,
681 hcSuf = phaseInputExt HCc,
684 outputFile = Nothing,
686 dynLibLoader = SystemDependent,
687 dumpPrefix = Nothing,
688 dumpPrefixForce = Nothing,
692 cmdlineFrameworks = [],
693 tmpDir = cDEFAULT_TMPDIR,
695 rtsOptsEnabled = RtsOptsSafeOnly,
701 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
714 pkgDatabase = Nothing,
715 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
716 ways = panic "defaultDynFlags: No ways",
717 buildTag = panic "defaultDynFlags: No buildTag",
718 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
720 -- initSysTools fills all these in
721 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
722 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
723 topDir = panic "defaultDynFlags: No topDir",
724 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
725 pgm_L = panic "defaultDynFlags: No pgm_L",
726 pgm_P = panic "defaultDynFlags: No pgm_P",
727 pgm_F = panic "defaultDynFlags: No pgm_F",
728 pgm_c = panic "defaultDynFlags: No pgm_c",
729 pgm_m = panic "defaultDynFlags: No pgm_m",
730 pgm_s = panic "defaultDynFlags: No pgm_s",
731 pgm_a = panic "defaultDynFlags: No pgm_a",
732 pgm_l = panic "defaultDynFlags: No pgm_l",
733 pgm_dll = panic "defaultDynFlags: No pgm_dll",
734 pgm_T = panic "defaultDynFlags: No pgm_T",
735 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
736 pgm_windres = panic "defaultDynFlags: No pgm_windres",
737 pgm_lo = panic "defaultDynFlags: No pgm_lo",
738 pgm_lc = panic "defaultDynFlags: No pgm_lc",
739 -- end of initSysTools values
741 depMakefile = "Makefile",
742 depIncludePkgDeps = False,
745 -- end of ghc -M values
746 filesToClean = panic "defaultDynFlags: No filesToClean",
747 dirsToClean = panic "defaultDynFlags: No dirsToClean",
748 haddockOptions = Nothing,
749 flags = defaultFlags,
752 extensionFlags = flattenExtensionFlags Nothing [],
754 log_action = \severity srcSpan style msg ->
756 SevOutput -> printOutput (msg style)
757 SevInfo -> printErrs (msg style)
758 SevFatal -> printErrs (msg style)
761 printErrs ((mkLocMessage srcSpan msg) style)
762 -- careful (#2302): printErrs prints in UTF-8, whereas
763 -- converting to string first and using hPutStr would
764 -- just emit the low 8 bits of each unicode char.
768 Note [Verbosity levels]
769 ~~~~~~~~~~~~~~~~~~~~~~~
770 0 | print errors & warnings only
771 1 | minimal verbosity: print "compiling M ... done." for each module.
772 2 | equivalent to -dshow-passes
773 3 | equivalent to existing "ghc -v"
774 4 | "ghc -v -ddump-most"
775 5 | "ghc -v -ddump-all"
781 -- OnOffs accumulate in reverse order, so we use foldr in order to
782 -- process them in the right order
783 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
785 flattenExtensionFlags ml = foldr f defaultExtensionFlags
786 where f (On f) flags = f : delete f flags
787 f (Off f) flags = delete f flags
788 defaultExtensionFlags = languageExtensions ml
790 languageExtensions :: Maybe Language -> [ExtensionFlag]
792 languageExtensions Nothing
793 -- Nothing => the default case
794 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
795 -- behaviour the default, to see if anyone notices
797 -- In due course I'd like Opt_MonoLocalBinds to be on by default
798 -- But NB it's implied by GADTs etc
799 -- SLPJ September 2010
800 : Opt_NondecreasingIndentation -- This has been on by default for some time
801 : Opt_RelaxedLayout -- This has been on by default for some time
802 : languageExtensions (Just Haskell2010)
804 languageExtensions (Just Haskell98)
805 = [Opt_ImplicitPrelude,
806 Opt_MonomorphismRestriction,
808 Opt_DatatypeContexts]
810 languageExtensions (Just Haskell2010)
811 = [Opt_ImplicitPrelude,
812 Opt_MonomorphismRestriction,
813 Opt_DatatypeContexts,
815 Opt_ForeignFunctionInterface,
820 -- | Test whether a 'DynFlag' is set
821 dopt :: DynFlag -> DynFlags -> Bool
822 dopt f dflags = f `elem` (flags dflags)
825 dopt_set :: DynFlags -> DynFlag -> DynFlags
826 dopt_set dfs f = dfs{ flags = f : flags dfs }
828 -- | Unset a 'DynFlag'
829 dopt_unset :: DynFlags -> DynFlag -> DynFlags
830 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
832 -- | Test whether a 'ExtensionFlag' is set
833 xopt :: ExtensionFlag -> DynFlags -> Bool
834 xopt f dflags = f `elem` extensionFlags dflags
836 -- | Set a 'ExtensionFlag'
837 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
839 = let onoffs = On f : extensions dfs
840 in dfs { extensions = onoffs,
841 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
843 -- | Unset a 'ExtensionFlag'
844 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
846 = let onoffs = Off f : extensions dfs
847 in dfs { extensions = onoffs,
848 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
850 setLanguage :: Language -> DynP ()
851 setLanguage l = upd f
852 where f dfs = let mLang = Just l
853 oneoffs = extensions dfs
856 extensionFlags = flattenExtensionFlags mLang oneoffs
859 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
860 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
861 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
862 -> [a] -- ^ Correctly ordered extracted options
863 getOpts dflags opts = reverse (opts dflags)
864 -- We add to the options from the front, so we need to reverse the list
866 -- | Gets the verbosity flag for the current verbosity level. This is fed to
867 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
868 getVerbFlag :: DynFlags -> String
870 | verbosity dflags >= 3 = "-v"
873 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
874 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
875 setPgmP, addOptl, addOptP,
876 addCmdlineFramework, addHaddockOpts
877 :: String -> DynFlags -> DynFlags
878 setOutputFile, setOutputHi, setDumpPrefixForce
879 :: Maybe String -> DynFlags -> DynFlags
881 setObjectDir f d = d{ objectDir = Just f}
882 setHiDir f d = d{ hiDir = Just f}
883 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
884 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
885 -- \#included from the .hc file when compiling with -fvia-C.
886 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
887 setDylibInstallName f d = d{ dylibInstallName = Just f}
889 setObjectSuf f d = d{ objectSuf = f}
890 setHiSuf f d = d{ hiSuf = f}
891 setHcSuf f d = d{ hcSuf = f}
893 setOutputFile f d = d{ outputFile = f}
894 setOutputHi f d = d{ outputHi = f}
896 parseDynLibLoaderMode f d =
898 ("deploy", "") -> d{ dynLibLoader = Deployable }
899 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
900 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
902 setDumpPrefixForce f d = d { dumpPrefixForce = f}
904 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
905 -- Config.hs should really use Option.
906 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
907 addOptl f d = d{ opt_l = f : opt_l d}
908 addOptP f d = d{ opt_P = f : opt_P d}
911 setDepMakefile :: FilePath -> DynFlags -> DynFlags
912 setDepMakefile f d = d { depMakefile = deOptDep f }
914 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
915 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
917 addDepExcludeMod :: String -> DynFlags -> DynFlags
919 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
921 addDepSuffix :: FilePath -> DynFlags -> DynFlags
922 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
925 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
926 -- we need to strip the "-optdep" off of the arg
927 deOptDep :: String -> String
928 deOptDep x = case stripPrefix "-optdep" x of
932 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
934 addHaddockOpts f d = d{ haddockOptions = Just f}
936 -- -----------------------------------------------------------------------------
937 -- Command-line options
939 -- | When invoking external tools as part of the compilation pipeline, we
940 -- pass these a sequence of options on the command-line. Rather than
941 -- just using a list of Strings, we use a type that allows us to distinguish
942 -- between filepaths and 'other stuff'. The reason for this is that
943 -- this type gives us a handle on transforming filenames, and filenames only,
944 -- to whatever format they're expected to be on a particular platform.
946 = FileOption -- an entry that _contains_ filename(s) / filepaths.
947 String -- a non-filepath prefix that shouldn't be
948 -- transformed (e.g., "/out=")
949 String -- the filepath/filename portion
952 showOpt :: Option -> String
953 showOpt (FileOption pre f) = pre ++ f
954 showOpt (Option s) = s
956 -----------------------------------------------------------------------------
957 -- Setting the optimisation level
959 updOptLevel :: Int -> DynFlags -> DynFlags
960 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
962 = dfs2{ optLevel = final_n }
964 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
965 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
966 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
968 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
969 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
971 -- -----------------------------------------------------------------------------
972 -- StgToDo: abstraction of stg-to-stg passes to run.
975 = StgDoMassageForProfiling -- should be (next to) last
976 -- There's also setStgVarInfo, but its absolute "lastness"
977 -- is so critical that it is hardwired in (no flag).
980 getStgToDo :: DynFlags -> [StgToDo]
984 stg_stats = dopt Opt_StgStats dflags
986 todo1 = if stg_stats then [D_stg_stats] else []
988 todo2 | WayProf `elem` wayNames dflags
989 = StgDoMassageForProfiling : todo1
993 {- **********************************************************************
997 %********************************************************************* -}
999 -- -----------------------------------------------------------------------------
1000 -- Parsing the dynamic flags.
1002 -- | Parse dynamic flags from a list of command line arguments. Returns the
1003 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1004 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1005 -- flags or missing arguments).
1006 parseDynamicFlags :: Monad m =>
1007 DynFlags -> [Located String]
1008 -> m (DynFlags, [Located String], [Located String])
1009 -- ^ Updated 'DynFlags', left-over arguments, and
1010 -- list of warnings.
1011 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1013 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1014 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1015 parseDynamicNoPackageFlags :: Monad m =>
1016 DynFlags -> [Located String]
1017 -> m (DynFlags, [Located String], [Located String])
1018 -- ^ Updated 'DynFlags', left-over arguments, and
1019 -- list of warnings.
1020 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1022 parseDynamicFlags_ :: Monad m =>
1023 DynFlags -> [Located String] -> Bool
1024 -> m (DynFlags, [Located String], [Located String])
1025 parseDynamicFlags_ dflags0 args pkg_flags = do
1026 -- XXX Legacy support code
1027 -- We used to accept things like
1028 -- optdep-f -optdepdepend
1029 -- optdep-f -optdep depend
1030 -- optdep -f -optdepdepend
1031 -- optdep -f -optdep depend
1032 -- but the spaces trip up proper argument handling. So get rid of them.
1033 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1034 f (x : xs) = x : f xs
1038 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1039 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1040 | otherwise = dynamic_flags
1042 let ((leftover, errs, warns), dflags1)
1043 = runCmdLine (processArgs flag_spec args') dflags0
1044 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1046 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1047 -- isn't up to the job. We know that if hscTarget == HscC, then the
1048 -- user has explicitly used -fvia-C, because -fasm is the default,
1049 -- unless there is no NCG on this platform. The latter case is
1050 -- checked when the -fPIC flag is parsed.
1052 let (pic_warns, dflags2)
1053 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1054 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1055 dflags1{ hscTarget = HscAsm })
1056 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1057 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1058 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1059 ++ "dynamic on this platform;\n ignoring -fllvm"],
1060 dflags1{ hscTarget = HscAsm })
1062 | otherwise = ([], dflags1)
1064 return (dflags2, leftover, pic_warns ++ warns)
1067 {- **********************************************************************
1069 DynFlags specifications
1071 %********************************************************************* -}
1073 allFlags :: [String]
1074 allFlags = map ('-':) $
1075 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1076 map ("fno-"++) flags ++
1077 map ("f"++) flags ++
1078 map ("f"++) flags' ++
1079 map ("X"++) supportedExtensions
1080 where ok (PrefixPred _ _) = False
1082 flags = [ name | (name, _, _) <- fFlags ]
1083 flags' = [ name | (name, _, _) <- fLangFlags ]
1085 --------------- The main flags themselves ------------------
1086 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1088 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1089 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1090 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1092 (HasArg (\s -> do { addCmdlineHCInclude s
1093 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1094 , Flag "v" (OptIntSuffix setVerbosity)
1096 ------- Specific phases --------------------------------------------
1097 -- need to appear before -pgmL to be parsed as LLVM flags.
1098 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1099 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1100 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1101 , Flag "pgmP" (hasArg setPgmP)
1102 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1103 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1104 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1105 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1106 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1107 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1108 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1109 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1111 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1112 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1113 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1114 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1115 , Flag "optP" (hasArg addOptP)
1116 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1117 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1118 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1119 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1120 , Flag "optl" (hasArg addOptl)
1121 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1124 (NoArg (if can_split
1125 then setDynFlag Opt_SplitObjs
1126 else addWarn "ignoring -fsplit-objs"))
1128 -------- ghc -M -----------------------------------------------------
1129 , Flag "dep-suffix" (hasArg addDepSuffix)
1130 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1131 , Flag "dep-makefile" (hasArg setDepMakefile)
1132 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1133 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1134 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1135 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1136 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1137 , Flag "exclude-module" (hasArg addDepExcludeMod)
1138 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1139 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1141 -------- Linking ----------------------------------------------------
1142 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1143 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1144 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1145 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1147 ------- Libraries ---------------------------------------------------
1148 , Flag "L" (Prefix addLibraryPath)
1149 , Flag "l" (AnySuffix (upd . addOptl))
1151 ------- Frameworks --------------------------------------------------
1152 -- -framework-path should really be -F ...
1153 , Flag "framework-path" (HasArg addFrameworkPath)
1154 , Flag "framework" (hasArg addCmdlineFramework)
1156 ------- Output Redirection ------------------------------------------
1157 , Flag "odir" (hasArg setObjectDir)
1158 , Flag "o" (SepArg (upd . setOutputFile . Just))
1159 , Flag "ohi" (hasArg (setOutputHi . Just ))
1160 , Flag "osuf" (hasArg setObjectSuf)
1161 , Flag "hcsuf" (hasArg setHcSuf)
1162 , Flag "hisuf" (hasArg setHiSuf)
1163 , Flag "hidir" (hasArg setHiDir)
1164 , Flag "tmpdir" (hasArg setTmpDir)
1165 , Flag "stubdir" (hasArg setStubDir)
1166 , Flag "outputdir" (hasArg setOutputDir)
1167 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1169 ------- Keeping temporary files -------------------------------------
1170 -- These can be singular (think ghc -c) or plural (think ghc --make)
1171 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1172 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1173 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1174 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1175 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1176 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1177 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1178 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1179 -- This only makes sense as plural
1180 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1182 ------- Miscellaneous ----------------------------------------------
1183 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1184 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1185 , Flag "with-rtsopts" (HasArg setRtsOpts)
1186 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1187 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1188 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1189 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1190 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1191 , Flag "main-is" (SepArg setMainIs)
1192 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1193 , Flag "haddock-opts" (hasArg addHaddockOpts)
1194 , Flag "hpcdir" (SepArg setOptHpcDir)
1196 ------- recompilation checker --------------------------------------
1197 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1198 ; deprecate "Use -fno-force-recomp instead" }))
1199 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1200 ; deprecate "Use -fforce-recomp instead" }))
1202 ------ HsCpp opts ---------------------------------------------------
1203 , Flag "D" (AnySuffix (upd . addOptP))
1204 , Flag "U" (AnySuffix (upd . addOptP))
1206 ------- Include/Import Paths ----------------------------------------
1207 , Flag "I" (Prefix addIncludePath)
1208 , Flag "i" (OptPrefix addImportPath)
1210 ------ Debugging ----------------------------------------------------
1211 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1213 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1214 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1215 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1216 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1217 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1218 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1219 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1220 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1221 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1222 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1223 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1224 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1225 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1226 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1227 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1228 ; setDumpFlag' Opt_D_dump_llvm}))
1229 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1230 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1231 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1232 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1233 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1234 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1235 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1236 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1237 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1238 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1239 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1240 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1241 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1242 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1243 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1244 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1245 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1246 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1247 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1248 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1249 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1250 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1251 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1252 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1253 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1254 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1255 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1256 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1257 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1258 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1259 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1260 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1261 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1262 ; setVerboseCore2Core }))
1263 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1264 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1265 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1266 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1267 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1268 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1269 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1270 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1271 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1272 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1273 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1274 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1275 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1276 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1277 , Flag "dshow-passes" (NoArg (do forceRecompile
1278 setVerbosity (Just 2)))
1279 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1281 ------ Machine dependant (-m<blah>) stuff ---------------------------
1283 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1284 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1285 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1286 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1288 ------ Warning opts -------------------------------------------------
1289 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1290 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1291 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1292 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1293 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1294 ; deprecate "Use -w instead" }))
1295 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1297 ------ Optimisation flags ------------------------------------------
1298 , Flag "O" (noArg (setOptLevel 1))
1299 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1300 , Flag "Odph" (noArg setDPHOpt)
1301 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1302 -- If the number is missing, use 1
1304 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1305 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1306 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1307 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1308 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1309 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1310 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1311 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1312 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1313 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1314 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1315 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1316 , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
1318 ------ Profiling ----------------------------------------------------
1320 -- XXX Should the -f* flags be deprecated?
1321 -- They don't seem to be documented
1322 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1323 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1324 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1325 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1326 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1327 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1328 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1329 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1330 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1332 ------ DPH flags ----------------------------------------------------
1334 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1335 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1336 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1338 ------ Compiler flags -----------------------------------------------
1340 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1341 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1342 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1343 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1344 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1345 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1347 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1348 setTarget HscNothing))
1349 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1350 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1351 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1352 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1354 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1355 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1356 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1357 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1358 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1359 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1360 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1362 package_flags :: [Flag (CmdLineP DynFlags)]
1364 ------- Packages ----------------------------------------------------
1365 Flag "package-conf" (HasArg extraPkgConf_)
1366 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1367 , Flag "package-name" (hasArg setPackageName)
1368 , Flag "package-id" (HasArg exposePackageId)
1369 , Flag "package" (HasArg exposePackage)
1370 , Flag "hide-package" (HasArg hidePackage)
1371 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1372 , Flag "ignore-package" (HasArg ignorePackage)
1373 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1374 ; deprecate "Use -package instead" }))
1377 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1378 -- False <=> we are turning the flag off
1379 turnOn :: TurnOnFlag; turnOn = True
1380 turnOff :: TurnOnFlag; turnOff = False
1383 = ( String -- Flag in string form
1384 , flag -- Flag in internal form
1385 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1386 -- Typically, emit a warning or error
1388 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1389 -> String -- ^ The flag prefix
1390 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1391 -> FlagSpec flag -- ^ Specification of this particular flag
1392 -> Flag (CmdLineP DynFlags)
1393 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1394 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1396 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1397 deprecatedForExtension lang turn_on
1398 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1400 flag | turn_on = lang
1401 | otherwise = "No"++lang
1403 useInstead :: String -> TurnOnFlag -> DynP ()
1404 useInstead flag turn_on
1405 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1407 no = if turn_on then "" else "no-"
1409 nop :: TurnOnFlag -> DynP ()
1412 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1413 fFlags :: [FlagSpec DynFlag]
1415 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1416 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1417 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1418 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1419 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1420 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1421 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1422 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1423 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1424 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1425 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1426 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1427 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1428 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1429 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1430 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1431 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1432 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1433 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1434 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1435 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1436 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1437 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1438 ( "warn-orphans", Opt_WarnOrphans, nop ),
1439 ( "warn-identities", Opt_WarnIdentities, nop ),
1440 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1441 ( "warn-tabs", Opt_WarnTabs, nop ),
1442 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1443 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1444 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1445 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1446 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1447 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1448 ( "strictness", Opt_Strictness, nop ),
1449 ( "specialise", Opt_Specialise, nop ),
1450 ( "float-in", Opt_FloatIn, nop ),
1451 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1452 ( "full-laziness", Opt_FullLaziness, nop ),
1453 ( "liberate-case", Opt_LiberateCase, nop ),
1454 ( "spec-constr", Opt_SpecConstr, nop ),
1455 ( "cse", Opt_CSE, nop ),
1456 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1457 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1458 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1459 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1460 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1461 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1462 ( "case-merge", Opt_CaseMerge, nop ),
1463 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1464 ( "method-sharing", Opt_MethodSharing,
1465 \_ -> deprecate "doesn't do anything any more"),
1466 -- Remove altogether in GHC 7.2
1467 ( "dicts-cheap", Opt_DictsCheap, nop ),
1468 ( "excess-precision", Opt_ExcessPrecision, nop ),
1469 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1470 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1471 ( "print-bind-result", Opt_PrintBindResult, nop ),
1472 ( "force-recomp", Opt_ForceRecomp, nop ),
1473 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1474 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1475 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1476 ( "break-on-exception", Opt_BreakOnException, nop ),
1477 ( "break-on-error", Opt_BreakOnError, nop ),
1478 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1479 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1480 ( "run-cps", Opt_RunCPS, nop ),
1481 ( "run-cpsz", Opt_RunCPSZ, nop ),
1482 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1483 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1484 ( "vectorise", Opt_Vectorise, nop ),
1485 ( "regs-graph", Opt_RegsGraph, nop ),
1486 ( "regs-iterative", Opt_RegsIterative, nop ),
1487 ( "gen-manifest", Opt_GenManifest, nop ),
1488 ( "embed-manifest", Opt_EmbedManifest, nop ),
1489 ( "ext-core", Opt_EmitExternalCore, nop ),
1490 ( "shared-implib", Opt_SharedImplib, nop ),
1491 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1492 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1493 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1496 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1497 fLangFlags :: [FlagSpec ExtensionFlag]
1499 ( "th", Opt_TemplateHaskell,
1500 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1501 ( "fi", Opt_ForeignFunctionInterface,
1502 deprecatedForExtension "ForeignFunctionInterface" ),
1503 ( "ffi", Opt_ForeignFunctionInterface,
1504 deprecatedForExtension "ForeignFunctionInterface" ),
1505 ( "arrows", Opt_Arrows,
1506 deprecatedForExtension "Arrows" ),
1507 ( "generics", Opt_Generics,
1508 deprecatedForExtension "Generics" ),
1509 ( "implicit-prelude", Opt_ImplicitPrelude,
1510 deprecatedForExtension "ImplicitPrelude" ),
1511 ( "bang-patterns", Opt_BangPatterns,
1512 deprecatedForExtension "BangPatterns" ),
1513 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1514 deprecatedForExtension "MonomorphismRestriction" ),
1515 ( "mono-pat-binds", Opt_MonoPatBinds,
1516 deprecatedForExtension "MonoPatBinds" ),
1517 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1518 deprecatedForExtension "ExtendedDefaultRules" ),
1519 ( "implicit-params", Opt_ImplicitParams,
1520 deprecatedForExtension "ImplicitParams" ),
1521 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1522 deprecatedForExtension "ScopedTypeVariables" ),
1524 deprecatedForExtension "PArr" ),
1525 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1526 deprecatedForExtension "OverlappingInstances" ),
1527 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1528 deprecatedForExtension "UndecidableInstances" ),
1529 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1530 deprecatedForExtension "IncoherentInstances" )
1533 supportedLanguages :: [String]
1534 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1536 supportedExtensions :: [String]
1537 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1539 supportedLanguagesAndExtensions :: [String]
1540 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1542 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1543 languageFlags :: [FlagSpec Language]
1545 ( "Haskell98", Haskell98, nop ),
1546 ( "Haskell2010", Haskell2010, nop )
1549 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1550 xFlags :: [FlagSpec ExtensionFlag]
1552 ( "CPP", Opt_Cpp, nop ),
1553 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1554 ( "TupleSections", Opt_TupleSections, nop ),
1555 ( "PatternGuards", Opt_PatternGuards, nop ),
1556 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1557 ( "MagicHash", Opt_MagicHash, nop ),
1558 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1559 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1560 ( "KindSignatures", Opt_KindSignatures, nop ),
1561 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1562 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1563 ( "TransformListComp", Opt_TransformListComp, nop ),
1564 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1565 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1566 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1567 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1568 ( "Rank2Types", Opt_Rank2Types, nop ),
1569 ( "RankNTypes", Opt_RankNTypes, nop ),
1570 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1571 ( "TypeOperators", Opt_TypeOperators, nop ),
1572 ( "RecursiveDo", Opt_RecursiveDo,
1573 deprecatedForExtension "DoRec"),
1574 ( "DoRec", Opt_DoRec, nop ),
1575 ( "Arrows", Opt_Arrows, nop ),
1576 ( "PArr", Opt_PArr, nop ),
1577 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1578 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1579 ( "Generics", Opt_Generics, nop ),
1580 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1581 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1582 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1583 ( "RecordPuns", Opt_RecordPuns,
1584 deprecatedForExtension "NamedFieldPuns" ),
1585 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1586 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1587 ( "GADTs", Opt_GADTs, nop ),
1588 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1589 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1590 ( "BangPatterns", Opt_BangPatterns, nop ),
1591 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1592 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1593 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1594 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1595 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1596 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1597 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1598 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1599 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1600 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1601 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1602 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1603 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1604 \ turn_on -> if not turn_on
1605 then deprecate "You can't turn off RelaxedPolyRec any more"
1607 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1608 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1609 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1611 ( "PatternSignatures", Opt_ScopedTypeVariables,
1612 deprecatedForExtension "ScopedTypeVariables" ),
1614 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1615 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1616 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1617 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1618 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1619 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1620 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1621 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1622 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1623 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1624 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1625 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1626 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1627 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1628 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1629 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1630 ( "PackageImports", Opt_PackageImports, nop ),
1631 ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
1632 \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
1635 defaultFlags :: [DynFlag]
1637 = [ Opt_AutoLinkPackages,
1638 Opt_ReadUserPackageConf,
1646 Opt_PrintBindContents,
1650 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1651 -- The default -O0 options
1655 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1657 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1658 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1659 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1660 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1661 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1662 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1664 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1666 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1667 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1669 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1670 -- all over the place
1672 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1674 -- Record wild-cards implies field disambiguation
1675 -- Otherwise if you write (C {..}) you may well get
1676 -- stuff like " 'a' not in scope ", which is a bit silly
1677 -- if the compiler has just filled in field 'a' of constructor 'C'
1678 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1681 optLevelFlags :: [([Int], DynFlag)]
1683 = [ ([0], Opt_IgnoreInterfacePragmas)
1684 , ([0], Opt_OmitInterfacePragmas)
1686 , ([1,2], Opt_IgnoreAsserts)
1687 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1689 , ([1,2], Opt_DoEtaReduction)
1690 , ([1,2], Opt_CaseMerge)
1691 , ([1,2], Opt_Strictness)
1693 , ([1,2], Opt_FullLaziness)
1694 , ([1,2], Opt_Specialise)
1695 , ([1,2], Opt_FloatIn)
1697 , ([2], Opt_LiberateCase)
1698 , ([2], Opt_SpecConstr)
1699 , ([2], Opt_RegsGraph)
1701 -- , ([2], Opt_StaticArgumentTransformation)
1702 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1703 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1704 -- several improvements to the heuristics, and I'm concerned that without
1705 -- those changes SAT will interfere with some attempts to write "high
1706 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1707 -- this year. In particular, the version in HEAD lacks the tail call
1708 -- criterion, so many things that look like reasonable loops will be
1709 -- turned into functions with extra (unneccesary) thunk creation.
1711 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1712 -- This one is important for a tiresome reason:
1713 -- we want to make sure that the bindings for data
1714 -- constructors are eta-expanded. This is probably
1715 -- a good thing anyway, but it seems fragile.
1718 -- -----------------------------------------------------------------------------
1719 -- Standard sets of warning options
1721 standardWarnings :: [DynFlag]
1723 = [ Opt_WarnWarningsDeprecations,
1724 Opt_WarnDeprecatedFlags,
1725 Opt_WarnUnrecognisedPragmas,
1726 Opt_WarnOverlappingPatterns,
1727 Opt_WarnMissingFields,
1728 Opt_WarnMissingMethods,
1729 Opt_WarnDuplicateExports,
1730 Opt_WarnLazyUnliftedBindings,
1731 Opt_WarnDodgyForeignImports,
1732 Opt_WarnWrongDoBind,
1733 Opt_WarnAlternativeLayoutRuleTransitional
1736 minusWOpts :: [DynFlag]
1738 = standardWarnings ++
1739 [ Opt_WarnUnusedBinds,
1740 Opt_WarnUnusedMatches,
1741 Opt_WarnUnusedImports,
1742 Opt_WarnIncompletePatterns,
1743 Opt_WarnDodgyExports,
1744 Opt_WarnDodgyImports
1747 minusWallOpts :: [DynFlag]
1750 [ Opt_WarnTypeDefaults,
1751 Opt_WarnNameShadowing,
1752 Opt_WarnMissingSigs,
1755 Opt_WarnUnusedDoBind,
1759 -- minuswRemovesOpts should be every warning option
1760 minuswRemovesOpts :: [DynFlag]
1763 [Opt_WarnImplicitPrelude,
1764 Opt_WarnIncompletePatternsRecUpd,
1765 Opt_WarnMonomorphism,
1766 Opt_WarnUnrecognisedPragmas,
1767 Opt_WarnAutoOrphans,
1771 enableGlasgowExts :: DynP ()
1772 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1773 mapM_ setExtensionFlag glasgowExtsFlags
1775 disableGlasgowExts :: DynP ()
1776 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1777 mapM_ unSetExtensionFlag glasgowExtsFlags
1779 glasgowExtsFlags :: [ExtensionFlag]
1780 glasgowExtsFlags = [
1781 Opt_ForeignFunctionInterface
1782 , Opt_UnliftedFFITypes
1783 , Opt_ImplicitParams
1784 , Opt_ScopedTypeVariables
1786 , Opt_TypeSynonymInstances
1787 , Opt_StandaloneDeriving
1788 , Opt_DeriveDataTypeable
1790 , Opt_DeriveFoldable
1791 , Opt_DeriveTraversable
1792 , Opt_FlexibleContexts
1793 , Opt_FlexibleInstances
1794 , Opt_ConstrainedClassMethods
1795 , Opt_MultiParamTypeClasses
1796 , Opt_FunctionalDependencies
1798 , Opt_PolymorphicComponents
1799 , Opt_ExistentialQuantification
1801 , Opt_PostfixOperators
1803 , Opt_LiberalTypeSynonyms
1807 , Opt_ParallelListComp
1808 , Opt_EmptyDataDecls
1809 , Opt_KindSignatures
1810 , Opt_GeneralizedNewtypeDeriving ]
1813 -- Consult the RTS to find whether GHC itself has been built profiled
1814 -- If so, you can't use Template Haskell
1815 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1817 rtsIsProfiled :: Bool
1818 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1820 checkTemplateHaskellOk :: Bool -> DynP ()
1821 checkTemplateHaskellOk turn_on
1822 | turn_on && rtsIsProfiled
1823 = addErr "You can't use Template Haskell with a profiled compiler"
1827 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1828 -- so we simply say "ok". It doesn't matter because TH isn't
1829 -- available in stage 1 anyway.
1830 checkTemplateHaskellOk turn_on = return ()
1833 {- **********************************************************************
1835 DynFlags constructors
1837 %********************************************************************* -}
1839 type DynP = EwM (CmdLineP DynFlags)
1841 upd :: (DynFlags -> DynFlags) -> DynP ()
1842 upd f = liftEwM (do { dfs <- getCmdLineState
1843 ; putCmdLineState $! (f dfs) })
1845 --------------- Constructor functions for OptKind -----------------
1846 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1847 noArg fn = NoArg (upd fn)
1849 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1850 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1852 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1853 hasArg fn = HasArg (upd . fn)
1855 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1856 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1857 ; deprecate deprec })
1859 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1860 intSuffix fn = IntSuffix (\n -> upd (fn n))
1862 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1863 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1865 --------------------------
1866 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1867 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1868 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1870 --------------------------
1871 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1872 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1875 deps = [ if turn_on then setExtensionFlag d
1876 else unSetExtensionFlag d
1877 | (f', turn_on, d) <- impliedFlags, f' == f ]
1878 -- When you set f, set the ones it implies
1879 -- NB: use setExtensionFlag recursively, in case the implied flags
1880 -- implies further flags
1882 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1883 -- When you un-set f, however, we don't un-set the things it implies
1884 -- (except for -fno-glasgow-exts, which is treated specially)
1886 --------------------------
1887 setDumpFlag' :: DynFlag -> DynP ()
1888 setDumpFlag' dump_flag
1889 = do { setDynFlag dump_flag
1890 ; when want_recomp forceRecompile }
1892 -- Certain dumpy-things are really interested in what's going
1893 -- on during recompilation checking, so in those cases we
1894 -- don't want to turn it off.
1895 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1896 Opt_D_dump_hi_diffs]
1898 forceRecompile :: DynP ()
1899 -- Whenver we -ddump, force recompilation (by switching off the
1900 -- recompilation checker), else you don't see the dump! However,
1901 -- don't switch it off in --make mode, else *everything* gets
1902 -- recompiled which probably isn't what you want
1903 forceRecompile = do { dfs <- liftEwM getCmdLineState
1904 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1906 force_recomp dfs = isOneShot (ghcMode dfs)
1908 setVerboseCore2Core :: DynP ()
1909 setVerboseCore2Core = do forceRecompile
1910 setDynFlag Opt_D_verbose_core2core
1911 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1914 setDumpSimplPhases :: String -> DynP ()
1915 setDumpSimplPhases s = do forceRecompile
1916 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1918 spec = case s of { ('=' : s') -> s'; _ -> s }
1920 setVerbosity :: Maybe Int -> DynP ()
1921 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1923 addCmdlineHCInclude :: String -> DynP ()
1924 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1926 extraPkgConf_ :: FilePath -> DynP ()
1927 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1929 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1931 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1933 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1935 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1937 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1939 setPackageName :: String -> DynFlags -> DynFlags
1940 setPackageName p s = s{ thisPackage = stringToPackageId p }
1942 -- If we're linking a binary, then only targets that produce object
1943 -- code are allowed (requests for other target types are ignored).
1944 setTarget :: HscTarget -> DynP ()
1945 setTarget l = upd set
1948 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1951 -- Changes the target only if we're compiling object code. This is
1952 -- used by -fasm and -fvia-C, which switch from one to the other, but
1953 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1954 -- can be safely used in an OPTIONS_GHC pragma.
1955 setObjTarget :: HscTarget -> DynP ()
1956 setObjTarget l = upd set
1959 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1962 setOptLevel :: Int -> DynFlags -> DynFlags
1963 setOptLevel n dflags
1964 | hscTarget dflags == HscInterpreted && n > 0
1966 -- not in IO any more, oh well:
1967 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1969 = updOptLevel n dflags
1972 -- -Odph is equivalent to
1974 -- -O2 optimise as much as possible
1975 -- -fno-method-sharing sharing specialisation defeats fusion
1977 -- -fdicts-cheap always inline dictionaries
1978 -- -fmax-simplifier-iterations20 this is necessary sometimes
1979 -- -fsimplifier-phases=3 we use an additional simplifier phase
1981 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1982 -- -fno-spec-constr-count SpecConstr as much as possible
1983 -- -finline-enough-args hack to prevent excessive inlining
1985 setDPHOpt :: DynFlags -> DynFlags
1986 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1988 , specConstrThreshold = Nothing
1989 , specConstrCount = Nothing
1991 `dopt_set` Opt_DictsCheap
1993 data DPHBackend = DPHPar
1996 deriving(Eq, Ord, Enum, Show)
1998 setDPHBackend :: DPHBackend -> DynP ()
1999 setDPHBackend backend
2001 upd $ \dflags -> dflags { dphBackend = backend }
2002 mapM_ exposePackage (dph_packages backend)
2004 dph_packages DPHThis = []
2005 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
2006 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
2008 dphPackage :: DynFlags -> PackageId
2009 dphPackage dflags = case dphBackend dflags of
2010 DPHPar -> dphParPackageId
2011 DPHSeq -> dphSeqPackageId
2012 DPHThis -> thisPackage dflags
2014 setMainIs :: String -> DynP ()
2016 | not (null main_fn) && isLower (head main_fn)
2017 -- The arg looked like "Foo.Bar.baz"
2018 = upd $ \d -> d{ mainFunIs = Just main_fn,
2019 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2021 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2022 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2024 | otherwise -- The arg looked like "baz"
2025 = upd $ \d -> d{ mainFunIs = Just arg }
2027 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2029 -----------------------------------------------------------------------------
2030 -- Paths & Libraries
2032 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2034 -- -i on its own deletes the import paths
2035 addImportPath "" = upd (\s -> s{importPaths = []})
2036 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2040 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2043 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2045 addFrameworkPath p =
2046 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2048 #ifndef mingw32_TARGET_OS
2049 split_marker :: Char
2050 split_marker = ':' -- not configurable (ToDo)
2053 splitPathList :: String -> [String]
2054 splitPathList s = filter notNull (splitUp s)
2055 -- empty paths are ignored: there might be a trailing
2056 -- ':' in the initial list, for example. Empty paths can
2057 -- cause confusion when they are translated into -I options
2058 -- for passing to gcc.
2060 #ifndef mingw32_TARGET_OS
2061 splitUp xs = split split_marker xs
2063 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2065 -- That is, if "foo:bar:baz" is used, this interpreted as
2066 -- consisting of three entries, 'foo', 'bar', 'baz'.
2067 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2068 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2070 -- Notice that no attempt is made to fully replace the 'standard'
2071 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2072 -- that this will cause too much breakage for users & ':' will
2073 -- work fine even with DOS paths, if you're not insisting on being silly.
2076 splitUp (x:':':div:xs) | div `elem` dir_markers
2077 = ((x:':':div:p): splitUp rs)
2079 (p,rs) = findNextPath xs
2080 -- we used to check for existence of the path here, but that
2081 -- required the IO monad to be threaded through the command-line
2082 -- parser which is quite inconvenient. The
2083 splitUp xs = cons p (splitUp rs)
2085 (p,rs) = findNextPath xs
2090 -- will be called either when we've consumed nought or the
2091 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2092 -- finding the next split marker.
2094 case break (`elem` split_markers) xs of
2095 (p, _:ds) -> (p, ds)
2098 split_markers :: [Char]
2099 split_markers = [':', ';']
2101 dir_markers :: [Char]
2102 dir_markers = ['/', '\\']
2105 -- -----------------------------------------------------------------------------
2106 -- tmpDir, where we store temporary files.
2108 setTmpDir :: FilePath -> DynFlags -> DynFlags
2109 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2110 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2111 -- seem necessary now --SDM 7/2/2008
2113 -----------------------------------------------------------------------------
2116 setRtsOpts :: String -> DynP ()
2117 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2119 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2120 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2122 -----------------------------------------------------------------------------
2125 setOptHpcDir :: String -> DynP ()
2126 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2128 -----------------------------------------------------------------------------
2129 -- Via-C compilation stuff
2131 -- There are some options that we need to pass to gcc when compiling
2132 -- Haskell code via C, but are only supported by recent versions of
2133 -- gcc. The configure script decides which of these options we need,
2134 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2135 -- read before each via-C compilation. The advantage of having these
2136 -- in a separate file is that the file can be created at install-time
2137 -- depending on the available gcc version, and even re-generated later
2138 -- if gcc is upgraded.
2140 -- The options below are not dependent on the version of gcc, only the
2143 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2144 [String]) -- for registerised HC compilations
2145 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2146 in (cCcOpts ++ flagsAll, flagsRegHc)
2148 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2149 [String]) -- for registerised HC compilations
2150 machdepCCOpts' _dflags
2151 #if alpha_TARGET_ARCH
2153 #ifdef HAVE_THREADED_RTS_SUPPORT
2157 -- For now, to suppress the gcc warning "call-clobbered
2158 -- register used for global register variable", we simply
2159 -- disable all warnings altogether using the -w flag. Oh well.
2161 #elif hppa_TARGET_ARCH
2162 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2163 -- (very nice, but too bad the HP /usr/include files don't agree.)
2164 = ( ["-D_HPUX_SOURCE"], [] )
2166 #elif m68k_TARGET_ARCH
2167 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2168 -- popping of args to routines to be explicit; if we let things
2169 -- be deferred 'til after an STGJUMP, imminent death is certain!
2171 -- -fomit-frame-pointer : *don't*
2172 -- It's better to have a6 completely tied up being a frame pointer
2173 -- rather than let GCC pick random things to do with it.
2174 -- (If we want to steal a6, then we would try to do things
2175 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2176 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2178 #elif i386_TARGET_ARCH
2179 -- -fno-defer-pop : basically the same game as for m68k
2181 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2182 -- the fp (%ebp) for our register maps.
2183 = let n_regs = stolen_x86_regs _dflags
2186 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2189 "-fomit-frame-pointer",
2190 -- we want -fno-builtin, because when gcc inlines
2191 -- built-in functions like memcpy() it tends to
2192 -- run out of registers, requiring -monly-n-regs
2194 "-DSTOLEN_X86_REGS="++show n_regs ]
2197 #elif ia64_TARGET_ARCH
2198 = ( [], ["-fomit-frame-pointer", "-G0"] )
2200 #elif x86_64_TARGET_ARCH
2203 ["-fomit-frame-pointer",
2204 "-fno-asynchronous-unwind-tables",
2205 -- the unwind tables are unnecessary for HC code,
2206 -- and get in the way of -split-objs. Another option
2207 -- would be to throw them away in the mangler, but this
2210 -- calling builtins like strlen() using the FFI can
2211 -- cause gcc to run out of regs, so use the external
2215 #elif sparc_TARGET_ARCH
2217 -- For now, to suppress the gcc warning "call-clobbered
2218 -- register used for global register variable", we simply
2219 -- disable all warnings altogether using the -w flag. Oh well.
2221 #elif powerpc_apple_darwin_TARGET
2223 -- Disable Apple's precompiling preprocessor. It's a great thing
2224 -- for "normal" programs, but it doesn't support register variable
2226 = ( [], ["-no-cpp-precomp"] )
2231 picCCOpts :: DynFlags -> [String]
2233 #if darwin_TARGET_OS
2234 -- Apple prefers to do things the other way round.
2235 -- PIC is on by default.
2236 -- -mdynamic-no-pic:
2237 -- Turn off PIC code generation.
2239 -- Don't generate "common" symbols - these are unwanted
2240 -- in dynamic libraries.
2243 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2245 = ["-mdynamic-no-pic"]
2246 #elif mingw32_TARGET_OS
2247 -- no -fPIC for Windows
2249 = ["-U __PIC__","-D__PIC__"]
2253 -- we need -fPIC for C files when we are compiling with -dynamic,
2254 -- otherwise things like stub.c files don't get compiled
2255 -- correctly. They need to reference data in the Haskell
2256 -- objects, but can't without -fPIC. See
2257 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2258 | opt_PIC || not opt_Static
2259 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2264 -- -----------------------------------------------------------------------------
2268 can_split = cSplitObjs == "YES"
2270 -- -----------------------------------------------------------------------------
2273 data Printable = String String
2274 | FromDynFlags (DynFlags -> String)
2276 compilerInfo :: [(String, Printable)]
2277 compilerInfo = [("Project name", String cProjectName),
2278 ("Project version", String cProjectVersion),
2279 ("Booter version", String cBooterVersion),
2280 ("Stage", String cStage),
2281 ("Build platform", String cBuildPlatform),
2282 ("Host platform", String cHostPlatform),
2283 ("Target platform", String cTargetPlatform),
2284 ("Have interpreter", String cGhcWithInterpreter),
2285 ("Object splitting", String cSplitObjs),
2286 ("Have native code generator", String cGhcWithNativeCodeGen),
2287 ("Have llvm code generator", String cGhcWithLlvmCodeGen),
2288 ("Support SMP", String cGhcWithSMP),
2289 ("Unregisterised", String cGhcUnregisterised),
2290 ("Tables next to code", String cGhcEnableTablesNextToCode),
2291 ("RTS ways", String cGhcRTSWays),
2292 ("Leading underscore", String cLeadingUnderscore),
2293 ("Debug on", String (show debugIsOn)),
2294 ("LibDir", FromDynFlags topDir),
2295 ("Global Package DB", FromDynFlags systemPackageConfig)