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,
35 DPHBackend(..), dphPackageMaybe,
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
105 import System.FilePath
106 import System.IO ( stderr, hPutChar )
108 -- -----------------------------------------------------------------------------
111 -- | Enumerates the simple on-or-off dynamic flags
118 | Opt_D_dump_cmmz_pretty
122 | Opt_D_dump_asm_native
123 | Opt_D_dump_asm_liveness
124 | Opt_D_dump_asm_coalesce
125 | Opt_D_dump_asm_regalloc
126 | Opt_D_dump_asm_regalloc_stages
127 | Opt_D_dump_asm_conflicts
128 | Opt_D_dump_asm_stats
129 | Opt_D_dump_asm_expanded
131 | Opt_D_dump_core_stats
137 | Opt_D_dump_inlinings
138 | Opt_D_dump_rule_firings
139 | Opt_D_dump_rule_rewrites
140 | Opt_D_dump_occur_anal
144 | Opt_D_dump_simpl_iterations
145 | Opt_D_dump_simpl_phases
154 | Opt_D_dump_worker_wrapper
155 | Opt_D_dump_rn_trace
156 | Opt_D_dump_rn_stats
158 | Opt_D_dump_simpl_stats
159 | Opt_D_dump_cs_trace -- Constraint solver in type checker
160 | Opt_D_dump_tc_trace
161 | Opt_D_dump_if_trace
162 | Opt_D_dump_vt_trace
169 | Opt_D_verbose_core2core
170 | Opt_D_verbose_stg2stg
172 | Opt_D_dump_hi_diffs
173 | Opt_D_dump_minimal_imports
174 | Opt_D_dump_mod_cycles
175 | Opt_D_dump_view_pattern_commoning
176 | Opt_D_faststring_stats
177 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
178 | Opt_D_no_debug_output
184 | Opt_WarnIsError -- -Werror; makes warnings fatal
185 | Opt_WarnDuplicateExports
187 | Opt_WarnImplicitPrelude
188 | Opt_WarnIncompletePatterns
189 | Opt_WarnIncompleteUniPatterns
190 | Opt_WarnIncompletePatternsRecUpd
191 | Opt_WarnMissingFields
192 | Opt_WarnMissingImportList
193 | Opt_WarnMissingMethods
194 | Opt_WarnMissingSigs
195 | Opt_WarnMissingLocalSigs
196 | Opt_WarnNameShadowing
197 | Opt_WarnOverlappingPatterns
198 | Opt_WarnTypeDefaults
199 | Opt_WarnMonomorphism
200 | Opt_WarnUnusedBinds
201 | Opt_WarnUnusedImports
202 | Opt_WarnUnusedMatches
203 | Opt_WarnWarningsDeprecations
204 | Opt_WarnDeprecatedFlags
205 | Opt_WarnDodgyExports
206 | Opt_WarnDodgyImports
208 | Opt_WarnAutoOrphans
211 | Opt_WarnUnrecognisedPragmas
212 | Opt_WarnDodgyForeignImports
213 | Opt_WarnLazyUnliftedBindings
214 | Opt_WarnUnusedDoBind
215 | Opt_WarnWrongDoBind
216 | Opt_WarnAlternativeLayoutRuleTransitional
218 | Opt_PrintExplicitForalls
225 | Opt_StaticArgumentTransformation
229 | Opt_DoLambdaEtaExpansion
233 | Opt_UnboxStrictFields
234 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
236 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
238 | Opt_RegsGraph -- do graph coloring register allocation
239 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
242 | Opt_IgnoreInterfacePragmas
243 | Opt_OmitInterfacePragmas
244 | Opt_ExposeAllUnfoldings
247 | Opt_AutoSccsOnAllToplevs
248 | Opt_AutoSccsOnExportedToplevs
249 | Opt_AutoSccsOnIndividualCafs
256 | Opt_ExcessPrecision
257 | Opt_EagerBlackHoling
258 | Opt_ReadUserPackageConf
262 | Opt_HideAllPackages
263 | Opt_PrintBindResult
267 | Opt_BreakOnException
269 | Opt_PrintEvldWithShow
270 | Opt_PrintBindContents
273 | Opt_EmitExternalCore
275 | Opt_BuildingCabalPackage
283 | Opt_ConvertToZipCfgAndBack
284 | Opt_AutoLinkPackages
285 | Opt_ImplicitImportQualified
294 | Opt_KeepRawTokenStream
299 data Language = Haskell98 | Haskell2010
303 | Opt_OverlappingInstances
304 | Opt_UndecidableInstances
305 | Opt_IncoherentInstances
306 | Opt_MonomorphismRestriction
309 | Opt_RelaxedPolyRec -- Deprecated
310 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
311 | Opt_ForeignFunctionInterface
312 | Opt_UnliftedFFITypes
313 | Opt_GHCForeignImportPrim
314 | Opt_ParallelArrays -- Syntactic support for parallel arrays
315 | Opt_Arrows -- Arrow-notation syntax
316 | Opt_TemplateHaskell
319 | Opt_Generics -- "Derivable type classes"
320 | Opt_ImplicitPrelude
321 | Opt_ScopedTypeVariables
325 | Opt_OverloadedStrings
326 | Opt_DisambiguateRecordFields
327 | Opt_RecordWildCards
333 | Opt_DoAndIfThenElse
334 | Opt_RebindableSyntax
336 | Opt_StandaloneDeriving
337 | Opt_DeriveDataTypeable
339 | Opt_DeriveTraversable
342 | Opt_TypeSynonymInstances
343 | Opt_FlexibleContexts
344 | Opt_FlexibleInstances
345 | Opt_ConstrainedClassMethods
346 | Opt_MultiParamTypeClasses
347 | Opt_FunctionalDependencies
349 | Opt_PolymorphicComponents
350 | Opt_ExistentialQuantification
354 | Opt_ParallelListComp
355 | Opt_TransformListComp
356 | Opt_GeneralizedNewtypeDeriving
359 | Opt_PostfixOperators
362 | Opt_LiberalTypeSynonyms
365 | Opt_ImpredicativeTypes
369 | Opt_AlternativeLayoutRule
370 | Opt_AlternativeLayoutRuleTransitional
371 | Opt_DatatypeContexts
372 | Opt_NondecreasingIndentation
376 -- | Contains not only a collection of 'DynFlag's but also a plethora of
377 -- information relating to the compilation of a single file or GHC session
378 data DynFlags = DynFlags {
381 hscTarget :: HscTarget,
382 hscOutName :: String, -- ^ Name of the output file
383 extCoreName :: String, -- ^ Name of the .hcr output file
384 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
385 optLevel :: Int, -- ^ Optimisation level
386 simplPhases :: Int, -- ^ Number of simplifier phases
387 maxSimplIterations :: Int, -- ^ Max simplifier iterations
388 shouldDumpSimplPhase :: Maybe String,
389 ruleCheck :: Maybe String,
390 strictnessBefore :: [Int], -- ^ Additional demand analysis
392 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
393 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
394 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
395 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
396 -- See CoreMonad.FloatOutSwitches
398 #ifndef OMIT_NATIVE_CODEGEN
399 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
401 stolen_x86_regs :: Int,
402 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
403 importPaths :: [FilePath],
405 mainFunIs :: Maybe String,
406 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
408 dphBackend :: DPHBackend,
410 thisPackage :: PackageId, -- ^ name of package currently being compiled
413 ways :: [Way], -- ^ Way flags from the command line
414 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
415 rtsBuildTag :: String, -- ^ The RTS \"way\"
417 -- For object splitting
418 splitInfo :: Maybe (String,Int),
421 objectDir :: Maybe String,
422 dylibInstallName :: Maybe String,
423 hiDir :: Maybe String,
424 stubDir :: Maybe String,
430 outputFile :: Maybe String,
431 outputHi :: Maybe String,
432 dynLibLoader :: DynLibLoader,
434 -- | This is set by 'DriverPipeline.runPipeline' based on where
435 -- its output is going.
436 dumpPrefix :: Maybe FilePath,
438 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
439 -- Set by @-ddump-file-prefix@
440 dumpPrefixForce :: Maybe FilePath,
442 includePaths :: [String],
443 libraryPaths :: [String],
444 frameworkPaths :: [String], -- used on darwin only
445 cmdlineFrameworks :: [String], -- ditto
446 tmpDir :: String, -- no trailing '/'
448 ghcUsagePath :: FilePath, -- Filled in by SysTools
449 ghciUsagePath :: FilePath, -- ditto
450 rtsOpts :: Maybe String,
451 rtsOptsEnabled :: RtsOptsEnabled,
453 hpcDir :: String, -- ^ Path to store the .mix files
455 -- options for particular phases
463 opt_windres :: [String],
464 opt_lo :: [String], -- LLVM: llvm optimiser
465 opt_lc :: [String], -- LLVM: llc static compiler
467 -- commands for particular phases
469 pgm_P :: (String,[Option]),
471 pgm_c :: (String,[Option]),
472 pgm_m :: (String,[Option]),
473 pgm_s :: (String,[Option]),
474 pgm_a :: (String,[Option]),
475 pgm_l :: (String,[Option]),
476 pgm_dll :: (String,[Option]),
478 pgm_sysman :: String,
479 pgm_windres :: String,
480 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
481 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
484 depMakefile :: FilePath,
485 depIncludePkgDeps :: Bool,
486 depExcludeMods :: [ModuleName],
487 depSuffixes :: [String],
490 extraPkgConfs :: [FilePath],
491 topDir :: FilePath, -- filled in by SysTools
492 systemPackageConfig :: FilePath, -- ditto
493 -- ^ The @-package-conf@ flags given on the command line, in the order
496 packageFlags :: [PackageFlag],
497 -- ^ The @-package@ and @-hide-package@ flags from the command-line
500 -- NB. do not modify this field, it is calculated by
501 -- Packages.initPackages and Packages.updatePackages.
502 pkgDatabase :: Maybe [PackageConfig],
503 pkgState :: PackageState,
506 -- These have to be IORefs, because the defaultCleanupHandler needs to
507 -- know what to clean when an exception happens
508 filesToClean :: IORef [FilePath],
509 dirsToClean :: IORef (Map FilePath FilePath),
513 -- Don't change this without updating extensionFlags:
514 language :: Maybe Language,
515 -- Don't change this without updating extensionFlags:
516 extensions :: [OnOff ExtensionFlag],
517 -- extensionFlags should always be equal to
518 -- flattenExtensionFlags language extensions
519 extensionFlags :: [ExtensionFlag],
521 -- | Message output action: use "ErrUtils" instead of this if you can
522 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
524 haddockOptions :: Maybe String
527 wayNames :: DynFlags -> [WayName]
528 wayNames = map wayName . ways
530 -- | The target code type of the compilation (if any).
532 -- Whenever you change the target, also make sure to set 'ghcLink' to
533 -- something sensible.
535 -- 'HscNothing' can be used to avoid generating any output, however, note
538 -- * This will not run the desugaring step, thus no warnings generated in
539 -- this step will be output. In particular, this includes warnings related
540 -- to pattern matching. You can run the desugarer manually using
541 -- 'GHC.desugarModule'.
543 -- * If a program uses Template Haskell the typechecker may try to run code
544 -- from an imported module. This will fail if no code has been generated
545 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
546 -- whether this might be the case and choose to either switch to a
547 -- different target or avoid typechecking such modules. (The latter may
548 -- preferable for security reasons.)
551 = HscC -- ^ Generate C code.
552 | HscAsm -- ^ Generate assembly using the native code generator.
553 | HscLlvm -- ^ Generate assembly using the llvm code generator.
554 | HscJava -- ^ Generate Java bytecode.
555 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
556 | HscNothing -- ^ Don't generate any code. See notes above.
559 -- | Will this target result in an object file on the disk?
560 isObjectTarget :: HscTarget -> Bool
561 isObjectTarget HscC = True
562 isObjectTarget HscAsm = True
563 isObjectTarget HscLlvm = True
564 isObjectTarget _ = False
566 -- | The 'GhcMode' tells us whether we're doing multi-module
567 -- compilation (controlled via the "GHC" API) or one-shot
568 -- (single-module) compilation. This makes a difference primarily to
569 -- the "Finder": in one-shot mode we look for interface files for
570 -- imported modules, but in multi-module mode we look for source files
571 -- in order to check whether they need to be recompiled.
573 = CompManager -- ^ @\-\-make@, GHCi, etc.
574 | OneShot -- ^ @ghc -c Foo.hs@
575 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
578 instance Outputable GhcMode where
579 ppr CompManager = ptext (sLit "CompManager")
580 ppr OneShot = ptext (sLit "OneShot")
581 ppr MkDepend = ptext (sLit "MkDepend")
583 isOneShot :: GhcMode -> Bool
584 isOneShot OneShot = True
585 isOneShot _other = False
587 -- | What to do in the link step, if there is one.
589 = NoLink -- ^ Don't link at all
590 | LinkBinary -- ^ Link object code into a binary
591 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
592 -- bytecode and object code).
593 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
596 isNoLink :: GhcLink -> Bool
597 isNoLink NoLink = True
600 -- Is it worth evaluating this Bool and caching it in the DynFlags value
601 -- during initDynFlags?
602 doingTickyProfiling :: DynFlags -> Bool
603 doingTickyProfiling _ = opt_Ticky
604 -- XXX -ticky is a static flag, because it implies -debug which is also
605 -- static. If the way flags were made dynamic, we could fix this.
608 = ExposePackage String
609 | ExposePackageId String
611 | IgnorePackage String
614 defaultHscTarget :: HscTarget
615 defaultHscTarget = defaultObjectTarget
617 -- | The 'HscTarget' value corresponding to the default way to create
618 -- object files on the current platform.
619 defaultObjectTarget :: HscTarget
621 | cGhcWithNativeCodeGen == "YES" = HscAsm
629 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
631 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
632 initDynFlags :: DynFlags -> IO DynFlags
633 initDynFlags dflags = do
634 -- someday these will be dynamic flags
635 ways <- readIORef v_Ways
636 refFilesToClean <- newIORef []
637 refDirsToClean <- newIORef Map.empty
640 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
641 rtsBuildTag = mkBuildTag ways,
642 filesToClean = refFilesToClean,
643 dirsToClean = refDirsToClean
646 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
647 -- and must be fully initialized by 'GHC.newSession' first.
648 defaultDynFlags :: DynFlags
651 ghcMode = CompManager,
652 ghcLink = LinkBinary,
653 hscTarget = defaultHscTarget,
659 maxSimplIterations = 4,
660 shouldDumpSimplPhase = Nothing,
662 specConstrThreshold = Just 200,
663 specConstrCount = Just 3,
664 liberateCaseThreshold = Just 200,
665 floatLamArgs = Just 0, -- Default: float only if no fvs
666 strictnessBefore = [],
668 #ifndef OMIT_NATIVE_CODEGEN
669 targetPlatform = defaultTargetPlatform,
672 cmdlineHcIncludes = [],
676 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
678 dphBackend = DPHNone,
680 thisPackage = mainPackageId,
683 dylibInstallName = Nothing,
687 objectSuf = phaseInputExt StopLn,
688 hcSuf = phaseInputExt HCc,
691 outputFile = Nothing,
693 dynLibLoader = SystemDependent,
694 dumpPrefix = Nothing,
695 dumpPrefixForce = Nothing,
699 cmdlineFrameworks = [],
700 tmpDir = cDEFAULT_TMPDIR,
702 rtsOptsEnabled = RtsOptsSafeOnly,
708 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
721 pkgDatabase = Nothing,
722 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
723 ways = panic "defaultDynFlags: No ways",
724 buildTag = panic "defaultDynFlags: No buildTag",
725 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
727 -- initSysTools fills all these in
728 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
729 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
730 topDir = panic "defaultDynFlags: No topDir",
731 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
732 pgm_L = panic "defaultDynFlags: No pgm_L",
733 pgm_P = panic "defaultDynFlags: No pgm_P",
734 pgm_F = panic "defaultDynFlags: No pgm_F",
735 pgm_c = panic "defaultDynFlags: No pgm_c",
736 pgm_m = panic "defaultDynFlags: No pgm_m",
737 pgm_s = panic "defaultDynFlags: No pgm_s",
738 pgm_a = panic "defaultDynFlags: No pgm_a",
739 pgm_l = panic "defaultDynFlags: No pgm_l",
740 pgm_dll = panic "defaultDynFlags: No pgm_dll",
741 pgm_T = panic "defaultDynFlags: No pgm_T",
742 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
743 pgm_windres = panic "defaultDynFlags: No pgm_windres",
744 pgm_lo = panic "defaultDynFlags: No pgm_lo",
745 pgm_lc = panic "defaultDynFlags: No pgm_lc",
746 -- end of initSysTools values
748 depMakefile = "Makefile",
749 depIncludePkgDeps = False,
752 -- end of ghc -M values
753 filesToClean = panic "defaultDynFlags: No filesToClean",
754 dirsToClean = panic "defaultDynFlags: No dirsToClean",
755 haddockOptions = Nothing,
756 flags = defaultFlags,
759 extensionFlags = flattenExtensionFlags Nothing [],
761 log_action = \severity srcSpan style msg ->
763 SevOutput -> printSDoc msg style
764 SevInfo -> printErrs msg style
765 SevFatal -> printErrs msg style
768 printErrs (mkLocMessage srcSpan msg) style
769 -- careful (#2302): printErrs prints in UTF-8, whereas
770 -- converting to string first and using hPutStr would
771 -- just emit the low 8 bits of each unicode char.
775 Note [Verbosity levels]
776 ~~~~~~~~~~~~~~~~~~~~~~~
777 0 | print errors & warnings only
778 1 | minimal verbosity: print "compiling M ... done." for each module.
779 2 | equivalent to -dshow-passes
780 3 | equivalent to existing "ghc -v"
781 4 | "ghc -v -ddump-most"
782 5 | "ghc -v -ddump-all"
788 -- OnOffs accumulate in reverse order, so we use foldr in order to
789 -- process them in the right order
790 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
792 flattenExtensionFlags ml = foldr f defaultExtensionFlags
793 where f (On f) flags = f : delete f flags
794 f (Off f) flags = delete f flags
795 defaultExtensionFlags = languageExtensions ml
797 languageExtensions :: Maybe Language -> [ExtensionFlag]
799 languageExtensions Nothing
800 -- Nothing => the default case
801 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
802 -- behaviour the default, to see if anyone notices
804 -- In due course I'd like Opt_MonoLocalBinds to be on by default
805 -- But NB it's implied by GADTs etc
806 -- SLPJ September 2010
807 : Opt_NondecreasingIndentation -- This has been on by default for some time
808 : languageExtensions (Just Haskell2010)
810 languageExtensions (Just Haskell98)
811 = [Opt_ImplicitPrelude,
812 Opt_MonomorphismRestriction,
814 Opt_DatatypeContexts,
815 Opt_NondecreasingIndentation
816 -- strictly speaking non-standard, but we always had this
817 -- on implicitly before the option was added in 7.1, and
818 -- turning it off breaks code, so we're keeping it on for
819 -- backwards compatibility. Cabal uses -XHaskell98 by
820 -- default unless you specify another language.
823 languageExtensions (Just Haskell2010)
824 = [Opt_ImplicitPrelude,
825 Opt_MonomorphismRestriction,
826 Opt_DatatypeContexts,
828 Opt_ForeignFunctionInterface,
833 -- | Test whether a 'DynFlag' is set
834 dopt :: DynFlag -> DynFlags -> Bool
835 dopt f dflags = f `elem` (flags dflags)
838 dopt_set :: DynFlags -> DynFlag -> DynFlags
839 dopt_set dfs f = dfs{ flags = f : flags dfs }
841 -- | Unset a 'DynFlag'
842 dopt_unset :: DynFlags -> DynFlag -> DynFlags
843 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
845 -- | Test whether a 'ExtensionFlag' is set
846 xopt :: ExtensionFlag -> DynFlags -> Bool
847 xopt f dflags = f `elem` extensionFlags dflags
849 -- | Set a 'ExtensionFlag'
850 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
852 = let onoffs = On f : extensions dfs
853 in dfs { extensions = onoffs,
854 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
856 -- | Unset a 'ExtensionFlag'
857 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
859 = let onoffs = Off f : extensions dfs
860 in dfs { extensions = onoffs,
861 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
863 setLanguage :: Language -> DynP ()
864 setLanguage l = upd f
865 where f dfs = let mLang = Just l
866 oneoffs = extensions dfs
869 extensionFlags = flattenExtensionFlags mLang oneoffs
872 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
873 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
874 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
875 -> [a] -- ^ Correctly ordered extracted options
876 getOpts dflags opts = reverse (opts dflags)
877 -- We add to the options from the front, so we need to reverse the list
879 -- | Gets the verbosity flag for the current verbosity level. This is fed to
880 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
881 getVerbFlag :: DynFlags -> String
883 | verbosity dflags >= 3 = "-v"
886 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
887 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
888 setPgmP, addOptl, addOptP,
889 addCmdlineFramework, addHaddockOpts
890 :: String -> DynFlags -> DynFlags
891 setOutputFile, setOutputHi, setDumpPrefixForce
892 :: Maybe String -> DynFlags -> DynFlags
894 setObjectDir f d = d{ objectDir = Just f}
895 setHiDir f d = d{ hiDir = Just f}
896 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
897 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
898 -- \#included from the .hc file when compiling via C (i.e. unregisterised
900 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
901 setDylibInstallName f d = d{ dylibInstallName = Just f}
903 setObjectSuf f d = d{ objectSuf = f}
904 setHiSuf f d = d{ hiSuf = f}
905 setHcSuf f d = d{ hcSuf = f}
907 setOutputFile f d = d{ outputFile = f}
908 setOutputHi f d = d{ outputHi = f}
910 parseDynLibLoaderMode f d =
912 ("deploy", "") -> d{ dynLibLoader = Deployable }
913 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
914 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
916 setDumpPrefixForce f d = d { dumpPrefixForce = f}
918 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
919 -- Config.hs should really use Option.
920 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
921 addOptl f d = d{ opt_l = f : opt_l d}
922 addOptP f d = d{ opt_P = f : opt_P d}
925 setDepMakefile :: FilePath -> DynFlags -> DynFlags
926 setDepMakefile f d = d { depMakefile = deOptDep f }
928 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
929 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
931 addDepExcludeMod :: String -> DynFlags -> DynFlags
933 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
935 addDepSuffix :: FilePath -> DynFlags -> DynFlags
936 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
939 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
940 -- we need to strip the "-optdep" off of the arg
941 deOptDep :: String -> String
942 deOptDep x = case stripPrefix "-optdep" x of
946 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
948 addHaddockOpts f d = d{ haddockOptions = Just f}
950 -- -----------------------------------------------------------------------------
951 -- Command-line options
953 -- | When invoking external tools as part of the compilation pipeline, we
954 -- pass these a sequence of options on the command-line. Rather than
955 -- just using a list of Strings, we use a type that allows us to distinguish
956 -- between filepaths and 'other stuff'. The reason for this is that
957 -- this type gives us a handle on transforming filenames, and filenames only,
958 -- to whatever format they're expected to be on a particular platform.
960 = FileOption -- an entry that _contains_ filename(s) / filepaths.
961 String -- a non-filepath prefix that shouldn't be
962 -- transformed (e.g., "/out=")
963 String -- the filepath/filename portion
966 showOpt :: Option -> String
967 showOpt (FileOption pre f) = pre ++ f
968 showOpt (Option s) = s
970 -----------------------------------------------------------------------------
971 -- Setting the optimisation level
973 updOptLevel :: Int -> DynFlags -> DynFlags
974 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
976 = dfs2{ optLevel = final_n }
978 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
979 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
980 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
982 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
983 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
985 -- -----------------------------------------------------------------------------
986 -- StgToDo: abstraction of stg-to-stg passes to run.
989 = StgDoMassageForProfiling -- should be (next to) last
990 -- There's also setStgVarInfo, but its absolute "lastness"
991 -- is so critical that it is hardwired in (no flag).
994 getStgToDo :: DynFlags -> [StgToDo]
998 stg_stats = dopt Opt_StgStats dflags
1000 todo1 = if stg_stats then [D_stg_stats] else []
1002 todo2 | WayProf `elem` wayNames dflags
1003 = StgDoMassageForProfiling : todo1
1007 {- **********************************************************************
1011 %********************************************************************* -}
1013 -- -----------------------------------------------------------------------------
1014 -- Parsing the dynamic flags.
1016 -- | Parse dynamic flags from a list of command line arguments. Returns the
1017 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1018 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1019 -- flags or missing arguments).
1020 parseDynamicFlags :: Monad m =>
1021 DynFlags -> [Located String]
1022 -> m (DynFlags, [Located String], [Located String])
1023 -- ^ Updated 'DynFlags', left-over arguments, and
1024 -- list of warnings.
1025 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1027 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1028 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1029 parseDynamicNoPackageFlags :: Monad m =>
1030 DynFlags -> [Located String]
1031 -> m (DynFlags, [Located String], [Located String])
1032 -- ^ Updated 'DynFlags', left-over arguments, and
1033 -- list of warnings.
1034 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1036 parseDynamicFlags_ :: Monad m =>
1037 DynFlags -> [Located String] -> Bool
1038 -> m (DynFlags, [Located String], [Located String])
1039 parseDynamicFlags_ dflags0 args pkg_flags = do
1040 -- XXX Legacy support code
1041 -- We used to accept things like
1042 -- optdep-f -optdepdepend
1043 -- optdep-f -optdep depend
1044 -- optdep -f -optdepdepend
1045 -- optdep -f -optdep depend
1046 -- but the spaces trip up proper argument handling. So get rid of them.
1047 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1048 f (x : xs) = x : f xs
1052 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1053 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1054 | otherwise = dynamic_flags
1056 let ((leftover, errs, warns), dflags1)
1057 = runCmdLine (processArgs flag_spec args') dflags0
1058 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1060 let (pic_warns, dflags2)
1061 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1062 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1063 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1064 ++ "dynamic on this platform;\n ignoring -fllvm"],
1065 dflags1{ hscTarget = HscAsm })
1067 | otherwise = ([], dflags1)
1069 return (dflags2, leftover, pic_warns ++ warns)
1072 {- **********************************************************************
1074 DynFlags specifications
1076 %********************************************************************* -}
1078 allFlags :: [String]
1079 allFlags = map ('-':) $
1080 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1081 map ("fno-"++) flags ++
1082 map ("f"++) flags ++
1083 map ("f"++) flags' ++
1084 map ("X"++) supportedExtensions
1085 where ok (PrefixPred _ _) = False
1087 flags = [ name | (name, _, _) <- fFlags ]
1088 flags' = [ name | (name, _, _) <- fLangFlags ]
1090 --------------- The main flags themselves ------------------
1091 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1093 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1094 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1095 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1097 (HasArg (\s -> do { addCmdlineHCInclude s
1098 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1099 , Flag "v" (OptIntSuffix setVerbosity)
1101 ------- Specific phases --------------------------------------------
1102 -- need to appear before -pgmL to be parsed as LLVM flags.
1103 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1104 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1105 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1106 , Flag "pgmP" (hasArg setPgmP)
1107 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1108 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1109 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1110 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1111 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1112 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1113 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1114 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1116 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1117 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1118 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1119 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1120 , Flag "optP" (hasArg addOptP)
1121 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1122 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1123 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1124 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1125 , Flag "optl" (hasArg addOptl)
1126 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1129 (NoArg (if can_split
1130 then setDynFlag Opt_SplitObjs
1131 else addWarn "ignoring -fsplit-objs"))
1133 -------- ghc -M -----------------------------------------------------
1134 , Flag "dep-suffix" (hasArg addDepSuffix)
1135 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1136 , Flag "dep-makefile" (hasArg setDepMakefile)
1137 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1138 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1139 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1140 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1141 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1142 , Flag "exclude-module" (hasArg addDepExcludeMod)
1143 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1144 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1146 -------- Linking ----------------------------------------------------
1147 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1148 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1149 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1150 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1152 ------- Libraries ---------------------------------------------------
1153 , Flag "L" (Prefix addLibraryPath)
1154 , Flag "l" (AnySuffix (upd . addOptl))
1156 ------- Frameworks --------------------------------------------------
1157 -- -framework-path should really be -F ...
1158 , Flag "framework-path" (HasArg addFrameworkPath)
1159 , Flag "framework" (hasArg addCmdlineFramework)
1161 ------- Output Redirection ------------------------------------------
1162 , Flag "odir" (hasArg setObjectDir)
1163 , Flag "o" (SepArg (upd . setOutputFile . Just))
1164 , Flag "ohi" (hasArg (setOutputHi . Just ))
1165 , Flag "osuf" (hasArg setObjectSuf)
1166 , Flag "hcsuf" (hasArg setHcSuf)
1167 , Flag "hisuf" (hasArg setHiSuf)
1168 , Flag "hidir" (hasArg setHiDir)
1169 , Flag "tmpdir" (hasArg setTmpDir)
1170 , Flag "stubdir" (hasArg setStubDir)
1171 , Flag "outputdir" (hasArg setOutputDir)
1172 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1174 ------- Keeping temporary files -------------------------------------
1175 -- These can be singular (think ghc -c) or plural (think ghc --make)
1176 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1177 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1178 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1179 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1180 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1181 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1182 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1183 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1184 -- This only makes sense as plural
1185 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1187 ------- Miscellaneous ----------------------------------------------
1188 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1189 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1190 , Flag "with-rtsopts" (HasArg setRtsOpts)
1191 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1192 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1193 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1194 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1195 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1196 , Flag "main-is" (SepArg setMainIs)
1197 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1198 , Flag "haddock-opts" (hasArg addHaddockOpts)
1199 , Flag "hpcdir" (SepArg setOptHpcDir)
1201 ------- recompilation checker --------------------------------------
1202 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1203 ; deprecate "Use -fno-force-recomp instead" }))
1204 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1205 ; deprecate "Use -fforce-recomp instead" }))
1207 ------ HsCpp opts ---------------------------------------------------
1208 , Flag "D" (AnySuffix (upd . addOptP))
1209 , Flag "U" (AnySuffix (upd . addOptP))
1211 ------- Include/Import Paths ----------------------------------------
1212 , Flag "I" (Prefix addIncludePath)
1213 , Flag "i" (OptPrefix addImportPath)
1215 ------ Debugging ----------------------------------------------------
1216 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1218 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1219 , Flag "ddump-raw-cmm" (setDumpFlag Opt_D_dump_raw_cmm)
1220 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1221 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1222 , Flag "ddump-core-stats" (setDumpFlag Opt_D_dump_core_stats)
1223 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1224 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1225 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1226 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1227 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1228 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1229 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1230 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1231 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1232 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1233 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1234 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1235 ; setDumpFlag' Opt_D_dump_llvm}))
1236 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1237 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1238 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1239 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1240 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1241 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1242 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1243 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1244 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1245 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1246 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1247 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1248 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1249 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1250 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1251 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1252 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1253 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1254 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1255 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1256 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1257 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1258 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1259 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1260 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1261 , Flag "ddump-cs-trace" (setDumpFlag Opt_D_dump_cs_trace)
1262 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1263 , Flag "ddump-vt-trace" (setDumpFlag Opt_D_dump_vt_trace)
1264 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1265 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1266 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1267 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1268 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1269 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1270 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1271 ; setVerboseCore2Core }))
1272 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1273 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1274 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1275 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1276 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1277 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1278 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1279 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1280 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1281 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1282 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1283 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1284 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1285 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1286 , Flag "dshow-passes" (NoArg (do forceRecompile
1287 setVerbosity (Just 2)))
1288 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1290 ------ Machine dependant (-m<blah>) stuff ---------------------------
1292 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1293 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1294 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1295 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1297 ------ Warning opts -------------------------------------------------
1298 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1299 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1300 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1301 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1302 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1303 ; deprecate "Use -w instead" }))
1304 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1306 ------ Optimisation flags ------------------------------------------
1307 , Flag "O" (noArg (setOptLevel 1))
1308 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1309 , Flag "Odph" (noArg setDPHOpt)
1310 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1311 -- If the number is missing, use 1
1313 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1314 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1315 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1316 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1317 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1318 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1319 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1320 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1321 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1322 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1323 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1324 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1325 , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
1327 ------ Profiling ----------------------------------------------------
1329 -- XXX Should the -f* flags be deprecated?
1330 -- They don't seem to be documented
1331 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1332 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1333 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1334 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1335 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1336 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1337 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1338 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1339 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1341 ------ DPH flags ----------------------------------------------------
1343 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1344 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1345 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1346 , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
1348 ------ Compiler flags -----------------------------------------------
1350 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1351 , Flag "fvia-c" (NoArg
1352 (addWarn "The -fvia-c flag does nothing; it will be removed in a future GHC release"))
1353 , Flag "fvia-C" (NoArg
1354 (addWarn "The -fvia-C flag does nothing; it will be removed in a future GHC release"))
1355 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1357 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1358 setTarget HscNothing))
1359 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1360 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1361 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1362 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1364 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1365 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1366 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1367 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1368 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1369 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1370 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1372 package_flags :: [Flag (CmdLineP DynFlags)]
1374 ------- Packages ----------------------------------------------------
1375 Flag "package-conf" (HasArg extraPkgConf_)
1376 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1377 , Flag "package-name" (hasArg setPackageName)
1378 , Flag "package-id" (HasArg exposePackageId)
1379 , Flag "package" (HasArg exposePackage)
1380 , Flag "hide-package" (HasArg hidePackage)
1381 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1382 , Flag "ignore-package" (HasArg ignorePackage)
1383 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1384 ; deprecate "Use -package instead" }))
1387 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1388 -- False <=> we are turning the flag off
1389 turnOn :: TurnOnFlag; turnOn = True
1390 turnOff :: TurnOnFlag; turnOff = False
1393 = ( String -- Flag in string form
1394 , flag -- Flag in internal form
1395 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1396 -- Typically, emit a warning or error
1398 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1399 -> String -- ^ The flag prefix
1400 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1401 -> FlagSpec flag -- ^ Specification of this particular flag
1402 -> Flag (CmdLineP DynFlags)
1403 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1404 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1406 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1407 deprecatedForExtension lang turn_on
1408 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1410 flag | turn_on = lang
1411 | otherwise = "No"++lang
1413 useInstead :: String -> TurnOnFlag -> DynP ()
1414 useInstead flag turn_on
1415 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1417 no = if turn_on then "" else "no-"
1419 nop :: TurnOnFlag -> DynP ()
1422 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1423 fFlags :: [FlagSpec DynFlag]
1425 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1426 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1427 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1428 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1429 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1430 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1431 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1432 ( "warn-incomplete-uni-patterns", Opt_WarnIncompleteUniPatterns, nop ),
1433 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1434 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1435 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1436 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1437 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1438 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1439 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1440 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1441 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1442 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1443 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1444 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1445 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1446 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1447 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1448 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1449 ( "warn-orphans", Opt_WarnOrphans, nop ),
1450 ( "warn-identities", Opt_WarnIdentities, nop ),
1451 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1452 ( "warn-tabs", Opt_WarnTabs, nop ),
1453 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1454 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1455 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1456 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1457 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1458 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1459 ( "strictness", Opt_Strictness, nop ),
1460 ( "specialise", Opt_Specialise, nop ),
1461 ( "float-in", Opt_FloatIn, nop ),
1462 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1463 ( "full-laziness", Opt_FullLaziness, nop ),
1464 ( "liberate-case", Opt_LiberateCase, nop ),
1465 ( "spec-constr", Opt_SpecConstr, nop ),
1466 ( "cse", Opt_CSE, nop ),
1467 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1468 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1469 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1470 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1471 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1472 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1473 ( "case-merge", Opt_CaseMerge, nop ),
1474 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1475 ( "method-sharing", Opt_MethodSharing,
1476 \_ -> deprecate "doesn't do anything any more"),
1477 -- Remove altogether in GHC 7.2
1478 ( "dicts-cheap", Opt_DictsCheap, nop ),
1479 ( "excess-precision", Opt_ExcessPrecision, nop ),
1480 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1481 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1482 ( "print-bind-result", Opt_PrintBindResult, nop ),
1483 ( "force-recomp", Opt_ForceRecomp, nop ),
1484 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1485 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1486 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1487 ( "break-on-exception", Opt_BreakOnException, nop ),
1488 ( "break-on-error", Opt_BreakOnError, nop ),
1489 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1490 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1491 ( "run-cps", Opt_RunCPS, nop ),
1492 ( "run-cpsz", Opt_RunCPSZ, nop ),
1493 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1494 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1495 ( "vectorise", Opt_Vectorise, nop ),
1496 ( "regs-graph", Opt_RegsGraph, nop ),
1497 ( "regs-iterative", Opt_RegsIterative, nop ),
1498 ( "gen-manifest", Opt_GenManifest, nop ),
1499 ( "embed-manifest", Opt_EmbedManifest, nop ),
1500 ( "ext-core", Opt_EmitExternalCore, nop ),
1501 ( "shared-implib", Opt_SharedImplib, nop ),
1502 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1503 ( "helpful-errors", Opt_HelpfulErrors, nop ),
1504 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1505 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1508 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1509 fLangFlags :: [FlagSpec ExtensionFlag]
1511 ( "th", Opt_TemplateHaskell,
1512 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1513 ( "fi", Opt_ForeignFunctionInterface,
1514 deprecatedForExtension "ForeignFunctionInterface" ),
1515 ( "ffi", Opt_ForeignFunctionInterface,
1516 deprecatedForExtension "ForeignFunctionInterface" ),
1517 ( "arrows", Opt_Arrows,
1518 deprecatedForExtension "Arrows" ),
1519 ( "generics", Opt_Generics,
1520 deprecatedForExtension "Generics" ),
1521 ( "implicit-prelude", Opt_ImplicitPrelude,
1522 deprecatedForExtension "ImplicitPrelude" ),
1523 ( "bang-patterns", Opt_BangPatterns,
1524 deprecatedForExtension "BangPatterns" ),
1525 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1526 deprecatedForExtension "MonomorphismRestriction" ),
1527 ( "mono-pat-binds", Opt_MonoPatBinds,
1528 deprecatedForExtension "MonoPatBinds" ),
1529 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1530 deprecatedForExtension "ExtendedDefaultRules" ),
1531 ( "implicit-params", Opt_ImplicitParams,
1532 deprecatedForExtension "ImplicitParams" ),
1533 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1534 deprecatedForExtension "ScopedTypeVariables" ),
1535 ( "parr", Opt_ParallelArrays,
1536 deprecatedForExtension "ParallelArrays" ),
1537 ( "PArr", Opt_ParallelArrays,
1538 deprecatedForExtension "ParallelArrays" ),
1539 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1540 deprecatedForExtension "OverlappingInstances" ),
1541 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1542 deprecatedForExtension "UndecidableInstances" ),
1543 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1544 deprecatedForExtension "IncoherentInstances" )
1547 supportedLanguages :: [String]
1548 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1550 supportedExtensions :: [String]
1551 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1553 supportedLanguagesAndExtensions :: [String]
1554 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1556 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1557 languageFlags :: [FlagSpec Language]
1559 ( "Haskell98", Haskell98, nop ),
1560 ( "Haskell2010", Haskell2010, nop )
1563 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1564 xFlags :: [FlagSpec ExtensionFlag]
1566 ( "CPP", Opt_Cpp, nop ),
1567 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1568 ( "TupleSections", Opt_TupleSections, nop ),
1569 ( "PatternGuards", Opt_PatternGuards, nop ),
1570 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1571 ( "MagicHash", Opt_MagicHash, nop ),
1572 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1573 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1574 ( "KindSignatures", Opt_KindSignatures, nop ),
1575 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1576 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1577 ( "TransformListComp", Opt_TransformListComp, nop ),
1578 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1579 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1580 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1581 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1582 ( "Rank2Types", Opt_Rank2Types, nop ),
1583 ( "RankNTypes", Opt_RankNTypes, nop ),
1584 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1585 ( "TypeOperators", Opt_TypeOperators, nop ),
1586 ( "RecursiveDo", Opt_RecursiveDo,
1587 deprecatedForExtension "DoRec"),
1588 ( "DoRec", Opt_DoRec, nop ),
1589 ( "Arrows", Opt_Arrows, nop ),
1590 ( "ParallelArrays", Opt_ParallelArrays, nop ),
1591 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1592 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1593 ( "Generics", Opt_Generics, nop ),
1594 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1595 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1596 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1597 ( "RecordPuns", Opt_RecordPuns,
1598 deprecatedForExtension "NamedFieldPuns" ),
1599 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1600 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1601 ( "GADTs", Opt_GADTs, nop ),
1602 ( "GADTSyntax", Opt_GADTSyntax, nop ),
1603 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1604 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1605 ( "BangPatterns", Opt_BangPatterns, nop ),
1606 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1607 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1608 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1609 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1610 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1611 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1612 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1613 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1614 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1615 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1616 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1617 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1618 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1619 \ turn_on -> if not turn_on
1620 then deprecate "You can't turn off RelaxedPolyRec any more"
1622 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1623 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1624 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1626 ( "PatternSignatures", Opt_ScopedTypeVariables,
1627 deprecatedForExtension "ScopedTypeVariables" ),
1629 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1630 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1631 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1632 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1633 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1634 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1635 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1636 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1637 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1638 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1639 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1640 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1641 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1642 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1643 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1644 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1645 ( "PackageImports", Opt_PackageImports, nop )
1648 defaultFlags :: [DynFlag]
1650 = [ Opt_AutoLinkPackages,
1651 Opt_ReadUserPackageConf,
1659 Opt_PrintBindContents,
1664 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1665 -- The default -O0 options
1669 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1671 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1672 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1673 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1674 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1675 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1676 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1677 , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
1678 , (Opt_FunctionalDependencies, turnOn, Opt_MultiParamTypeClasses)
1680 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1682 , (Opt_GADTs, turnOn, Opt_GADTSyntax)
1683 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1684 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1686 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1687 -- all over the place
1689 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1691 -- Record wild-cards implies field disambiguation
1692 -- Otherwise if you write (C {..}) you may well get
1693 -- stuff like " 'a' not in scope ", which is a bit silly
1694 -- if the compiler has just filled in field 'a' of constructor 'C'
1695 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1697 , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
1700 optLevelFlags :: [([Int], DynFlag)]
1702 = [ ([0], Opt_IgnoreInterfacePragmas)
1703 , ([0], Opt_OmitInterfacePragmas)
1705 , ([1,2], Opt_IgnoreAsserts)
1706 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1708 , ([1,2], Opt_DoEtaReduction)
1709 , ([1,2], Opt_CaseMerge)
1710 , ([1,2], Opt_Strictness)
1712 , ([1,2], Opt_FullLaziness)
1713 , ([1,2], Opt_Specialise)
1714 , ([1,2], Opt_FloatIn)
1716 , ([2], Opt_LiberateCase)
1717 , ([2], Opt_SpecConstr)
1718 , ([2], Opt_RegsGraph)
1720 -- , ([2], Opt_StaticArgumentTransformation)
1721 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1722 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1723 -- several improvements to the heuristics, and I'm concerned that without
1724 -- those changes SAT will interfere with some attempts to write "high
1725 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1726 -- this year. In particular, the version in HEAD lacks the tail call
1727 -- criterion, so many things that look like reasonable loops will be
1728 -- turned into functions with extra (unneccesary) thunk creation.
1730 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1731 -- This one is important for a tiresome reason:
1732 -- we want to make sure that the bindings for data
1733 -- constructors are eta-expanded. This is probably
1734 -- a good thing anyway, but it seems fragile.
1737 -- -----------------------------------------------------------------------------
1738 -- Standard sets of warning options
1740 standardWarnings :: [DynFlag]
1742 = [ Opt_WarnWarningsDeprecations,
1743 Opt_WarnDeprecatedFlags,
1744 Opt_WarnUnrecognisedPragmas,
1745 Opt_WarnOverlappingPatterns,
1746 Opt_WarnMissingFields,
1747 Opt_WarnMissingMethods,
1748 Opt_WarnDuplicateExports,
1749 Opt_WarnLazyUnliftedBindings,
1750 Opt_WarnDodgyForeignImports,
1751 Opt_WarnWrongDoBind,
1752 Opt_WarnAlternativeLayoutRuleTransitional
1755 minusWOpts :: [DynFlag]
1756 -- Things you get with -W
1758 = standardWarnings ++
1759 [ Opt_WarnUnusedBinds,
1760 Opt_WarnUnusedMatches,
1761 Opt_WarnUnusedImports,
1762 Opt_WarnIncompletePatterns,
1763 Opt_WarnDodgyExports,
1764 Opt_WarnDodgyImports
1767 minusWallOpts :: [DynFlag]
1768 -- Things you get with -Wall
1771 [ Opt_WarnTypeDefaults,
1772 Opt_WarnNameShadowing,
1773 Opt_WarnMissingSigs,
1776 Opt_WarnUnusedDoBind
1779 minuswRemovesOpts :: [DynFlag]
1780 -- minuswRemovesOpts should be every warning option
1784 Opt_WarnIncompletePatternsRecUpd,
1785 Opt_WarnIncompleteUniPatterns,
1786 Opt_WarnMonomorphism,
1787 Opt_WarnUnrecognisedPragmas,
1788 Opt_WarnAutoOrphans,
1789 Opt_WarnImplicitPrelude
1792 enableGlasgowExts :: DynP ()
1793 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1794 mapM_ setExtensionFlag glasgowExtsFlags
1796 disableGlasgowExts :: DynP ()
1797 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1798 mapM_ unSetExtensionFlag glasgowExtsFlags
1800 glasgowExtsFlags :: [ExtensionFlag]
1801 glasgowExtsFlags = [
1802 Opt_ForeignFunctionInterface
1803 , Opt_UnliftedFFITypes
1804 , Opt_ImplicitParams
1805 , Opt_ScopedTypeVariables
1807 , Opt_TypeSynonymInstances
1808 , Opt_StandaloneDeriving
1809 , Opt_DeriveDataTypeable
1811 , Opt_DeriveFoldable
1812 , Opt_DeriveTraversable
1813 , Opt_FlexibleContexts
1814 , Opt_FlexibleInstances
1815 , Opt_ConstrainedClassMethods
1816 , Opt_MultiParamTypeClasses
1817 , Opt_FunctionalDependencies
1819 , Opt_PolymorphicComponents
1820 , Opt_ExistentialQuantification
1822 , Opt_PostfixOperators
1824 , Opt_LiberalTypeSynonyms
1828 , Opt_ParallelListComp
1829 , Opt_EmptyDataDecls
1830 , Opt_KindSignatures
1831 , Opt_GeneralizedNewtypeDeriving ]
1834 -- Consult the RTS to find whether GHC itself has been built profiled
1835 -- If so, you can't use Template Haskell
1836 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1838 rtsIsProfiled :: Bool
1839 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1841 checkTemplateHaskellOk :: Bool -> DynP ()
1842 checkTemplateHaskellOk turn_on
1843 | turn_on && rtsIsProfiled
1844 = addErr "You can't use Template Haskell with a profiled compiler"
1848 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1849 -- so we simply say "ok". It doesn't matter because TH isn't
1850 -- available in stage 1 anyway.
1851 checkTemplateHaskellOk turn_on = return ()
1854 {- **********************************************************************
1856 DynFlags constructors
1858 %********************************************************************* -}
1860 type DynP = EwM (CmdLineP DynFlags)
1862 upd :: (DynFlags -> DynFlags) -> DynP ()
1863 upd f = liftEwM (do { dfs <- getCmdLineState
1864 ; putCmdLineState $! (f dfs) })
1866 --------------- Constructor functions for OptKind -----------------
1867 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1868 noArg fn = NoArg (upd fn)
1870 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1871 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1873 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1874 hasArg fn = HasArg (upd . fn)
1876 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1877 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1878 ; deprecate deprec })
1880 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1881 intSuffix fn = IntSuffix (\n -> upd (fn n))
1883 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1884 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1886 --------------------------
1887 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1888 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1889 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1891 --------------------------
1892 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1893 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1896 deps = [ if turn_on then setExtensionFlag d
1897 else unSetExtensionFlag d
1898 | (f', turn_on, d) <- impliedFlags, f' == f ]
1899 -- When you set f, set the ones it implies
1900 -- NB: use setExtensionFlag recursively, in case the implied flags
1901 -- implies further flags
1903 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1904 -- When you un-set f, however, we don't un-set the things it implies
1905 -- (except for -fno-glasgow-exts, which is treated specially)
1907 --------------------------
1908 setDumpFlag' :: DynFlag -> DynP ()
1909 setDumpFlag' dump_flag
1910 = do { setDynFlag dump_flag
1911 ; when want_recomp forceRecompile }
1913 -- Certain dumpy-things are really interested in what's going
1914 -- on during recompilation checking, so in those cases we
1915 -- don't want to turn it off.
1916 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1917 Opt_D_dump_hi_diffs]
1919 forceRecompile :: DynP ()
1920 -- Whenver we -ddump, force recompilation (by switching off the
1921 -- recompilation checker), else you don't see the dump! However,
1922 -- don't switch it off in --make mode, else *everything* gets
1923 -- recompiled which probably isn't what you want
1924 forceRecompile = do { dfs <- liftEwM getCmdLineState
1925 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1927 force_recomp dfs = isOneShot (ghcMode dfs)
1929 setVerboseCore2Core :: DynP ()
1930 setVerboseCore2Core = do forceRecompile
1931 setDynFlag Opt_D_verbose_core2core
1932 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1935 setDumpSimplPhases :: String -> DynP ()
1936 setDumpSimplPhases s = do forceRecompile
1937 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1939 spec = case s of { ('=' : s') -> s'; _ -> s }
1941 setVerbosity :: Maybe Int -> DynP ()
1942 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1944 addCmdlineHCInclude :: String -> DynP ()
1945 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1947 extraPkgConf_ :: FilePath -> DynP ()
1948 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1950 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1952 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1954 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1956 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1958 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1960 setPackageName :: String -> DynFlags -> DynFlags
1961 setPackageName p s = s{ thisPackage = stringToPackageId p }
1963 -- If we're linking a binary, then only targets that produce object
1964 -- code are allowed (requests for other target types are ignored).
1965 setTarget :: HscTarget -> DynP ()
1966 setTarget l = upd set
1969 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1972 -- Changes the target only if we're compiling object code. This is
1973 -- used by -fasm and -fllvm, which switch from one to the other, but
1974 -- not from bytecode to object-code. The idea is that -fasm/-fllvm
1975 -- can be safely used in an OPTIONS_GHC pragma.
1976 setObjTarget :: HscTarget -> DynP ()
1977 setObjTarget l = upd set
1980 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1983 setOptLevel :: Int -> DynFlags -> DynFlags
1984 setOptLevel n dflags
1985 | hscTarget dflags == HscInterpreted && n > 0
1987 -- not in IO any more, oh well:
1988 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1990 = updOptLevel n dflags
1993 -- -Odph is equivalent to
1995 -- -O2 optimise as much as possible
1996 -- -fmax-simplifier-iterations20 this is necessary sometimes
1997 -- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
1999 setDPHOpt :: DynFlags -> DynFlags
2000 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
2004 -- Determines the package used by the vectoriser for the symbols of the vectorised code.
2005 -- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
2006 -- vectoriser cannot be used.
2008 data DPHBackend = DPHPar -- "dph-par"
2009 | DPHSeq -- "dph-seq"
2010 | DPHThis -- the currently compiled package
2011 | DPHNone -- no DPH library available
2012 deriving(Eq, Ord, Enum, Show)
2014 setDPHBackend :: DPHBackend -> DynP ()
2015 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
2017 -- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
2019 dphPackageMaybe :: DynFlags -> Maybe PackageId
2020 dphPackageMaybe dflags
2021 = case dphBackend dflags of
2022 DPHPar -> Just dphParPackageId
2023 DPHSeq -> Just dphSeqPackageId
2024 DPHThis -> Just (thisPackage dflags)
2027 setMainIs :: String -> DynP ()
2029 | not (null main_fn) && isLower (head main_fn)
2030 -- The arg looked like "Foo.Bar.baz"
2031 = upd $ \d -> d{ mainFunIs = Just main_fn,
2032 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2034 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2035 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2037 | otherwise -- The arg looked like "baz"
2038 = upd $ \d -> d{ mainFunIs = Just arg }
2040 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2042 -----------------------------------------------------------------------------
2043 -- Paths & Libraries
2045 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2047 -- -i on its own deletes the import paths
2048 addImportPath "" = upd (\s -> s{importPaths = []})
2049 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2053 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2056 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2058 addFrameworkPath p =
2059 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2061 #ifndef mingw32_TARGET_OS
2062 split_marker :: Char
2063 split_marker = ':' -- not configurable (ToDo)
2066 splitPathList :: String -> [String]
2067 splitPathList s = filter notNull (splitUp s)
2068 -- empty paths are ignored: there might be a trailing
2069 -- ':' in the initial list, for example. Empty paths can
2070 -- cause confusion when they are translated into -I options
2071 -- for passing to gcc.
2073 #ifndef mingw32_TARGET_OS
2074 splitUp xs = split split_marker xs
2076 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2078 -- That is, if "foo:bar:baz" is used, this interpreted as
2079 -- consisting of three entries, 'foo', 'bar', 'baz'.
2080 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2081 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2083 -- Notice that no attempt is made to fully replace the 'standard'
2084 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2085 -- that this will cause too much breakage for users & ':' will
2086 -- work fine even with DOS paths, if you're not insisting on being silly.
2089 splitUp (x:':':div:xs) | div `elem` dir_markers
2090 = ((x:':':div:p): splitUp rs)
2092 (p,rs) = findNextPath xs
2093 -- we used to check for existence of the path here, but that
2094 -- required the IO monad to be threaded through the command-line
2095 -- parser which is quite inconvenient. The
2096 splitUp xs = cons p (splitUp rs)
2098 (p,rs) = findNextPath xs
2103 -- will be called either when we've consumed nought or the
2104 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2105 -- finding the next split marker.
2107 case break (`elem` split_markers) xs of
2108 (p, _:ds) -> (p, ds)
2111 split_markers :: [Char]
2112 split_markers = [':', ';']
2114 dir_markers :: [Char]
2115 dir_markers = ['/', '\\']
2118 -- -----------------------------------------------------------------------------
2119 -- tmpDir, where we store temporary files.
2121 setTmpDir :: FilePath -> DynFlags -> DynFlags
2122 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2123 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2124 -- seem necessary now --SDM 7/2/2008
2126 -----------------------------------------------------------------------------
2129 setRtsOpts :: String -> DynP ()
2130 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2132 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2133 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2135 -----------------------------------------------------------------------------
2138 setOptHpcDir :: String -> DynP ()
2139 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2141 -----------------------------------------------------------------------------
2142 -- Via-C compilation stuff
2144 -- There are some options that we need to pass to gcc when compiling
2145 -- Haskell code via C, but are only supported by recent versions of
2146 -- gcc. The configure script decides which of these options we need,
2147 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2148 -- read before each via-C compilation. The advantage of having these
2149 -- in a separate file is that the file can be created at install-time
2150 -- depending on the available gcc version, and even re-generated later
2151 -- if gcc is upgraded.
2153 -- The options below are not dependent on the version of gcc, only the
2156 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2157 [String]) -- for registerised HC compilations
2158 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2159 in (cCcOpts ++ flagsAll, flagsRegHc)
2161 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2162 [String]) -- for registerised HC compilations
2163 machdepCCOpts' _dflags
2164 #if alpha_TARGET_ARCH
2166 #ifdef HAVE_THREADED_RTS_SUPPORT
2170 -- For now, to suppress the gcc warning "call-clobbered
2171 -- register used for global register variable", we simply
2172 -- disable all warnings altogether using the -w flag. Oh well.
2174 #elif hppa_TARGET_ARCH
2175 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2176 -- (very nice, but too bad the HP /usr/include files don't agree.)
2177 = ( ["-D_HPUX_SOURCE"], [] )
2179 #elif m68k_TARGET_ARCH
2180 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2181 -- popping of args to routines to be explicit; if we let things
2182 -- be deferred 'til after an STGJUMP, imminent death is certain!
2184 -- -fomit-frame-pointer : *don't*
2185 -- It's better to have a6 completely tied up being a frame pointer
2186 -- rather than let GCC pick random things to do with it.
2187 -- (If we want to steal a6, then we would try to do things
2188 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2189 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2191 #elif i386_TARGET_ARCH
2192 -- -fno-defer-pop : basically the same game as for m68k
2194 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2195 -- the fp (%ebp) for our register maps.
2196 = let n_regs = stolen_x86_regs _dflags
2199 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2202 "-fomit-frame-pointer",
2203 -- we want -fno-builtin, because when gcc inlines
2204 -- built-in functions like memcpy() it tends to
2205 -- run out of registers, requiring -monly-n-regs
2207 "-DSTOLEN_X86_REGS="++show n_regs ]
2210 #elif ia64_TARGET_ARCH
2211 = ( [], ["-fomit-frame-pointer", "-G0"] )
2213 #elif x86_64_TARGET_ARCH
2216 ["-fomit-frame-pointer",
2217 "-fno-asynchronous-unwind-tables",
2218 -- the unwind tables are unnecessary for HC code,
2219 -- and get in the way of -split-objs. Another option
2220 -- would be to throw them away in the mangler, but this
2223 -- calling builtins like strlen() using the FFI can
2224 -- cause gcc to run out of regs, so use the external
2228 #elif sparc_TARGET_ARCH
2230 -- For now, to suppress the gcc warning "call-clobbered
2231 -- register used for global register variable", we simply
2232 -- disable all warnings altogether using the -w flag. Oh well.
2234 #elif powerpc_apple_darwin_TARGET
2236 -- Disable Apple's precompiling preprocessor. It's a great thing
2237 -- for "normal" programs, but it doesn't support register variable
2239 = ( [], ["-no-cpp-precomp"] )
2244 picCCOpts :: DynFlags -> [String]
2246 #if darwin_TARGET_OS
2247 -- Apple prefers to do things the other way round.
2248 -- PIC is on by default.
2249 -- -mdynamic-no-pic:
2250 -- Turn off PIC code generation.
2252 -- Don't generate "common" symbols - these are unwanted
2253 -- in dynamic libraries.
2256 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2258 = ["-mdynamic-no-pic"]
2259 #elif mingw32_TARGET_OS
2260 -- no -fPIC for Windows
2262 = ["-U __PIC__","-D__PIC__"]
2266 -- we need -fPIC for C files when we are compiling with -dynamic,
2267 -- otherwise things like stub.c files don't get compiled
2268 -- correctly. They need to reference data in the Haskell
2269 -- objects, but can't without -fPIC. See
2270 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2271 | opt_PIC || not opt_Static
2272 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2277 -- -----------------------------------------------------------------------------
2281 can_split = cSupportsSplitObjs == "YES"
2283 -- -----------------------------------------------------------------------------
2286 data Printable = String String
2287 | FromDynFlags (DynFlags -> String)
2289 compilerInfo :: [(String, Printable)]
2290 compilerInfo = [("Project name", String cProjectName),
2291 ("Project version", String cProjectVersion),
2292 ("Booter version", String cBooterVersion),
2293 ("Stage", String cStage),
2294 ("Build platform", String cBuildPlatformString),
2295 ("Host platform", String cHostPlatformString),
2296 ("Target platform", String cTargetPlatformString),
2297 ("Have interpreter", String cGhcWithInterpreter),
2298 ("Object splitting supported", String cSupportsSplitObjs),
2299 ("Have native code generator", String cGhcWithNativeCodeGen),
2300 ("Support SMP", String cGhcWithSMP),
2301 ("Unregisterised", String cGhcUnregisterised),
2302 ("Tables next to code", String cGhcEnableTablesNextToCode),
2303 ("RTS ways", String cGhcRTSWays),
2304 ("Leading underscore", String cLeadingUnderscore),
2305 ("Debug on", String (show debugIsOn)),
2306 ("LibDir", FromDynFlags topDir),
2307 ("Global Package DB", FromDynFlags systemPackageConfig),
2308 ("C compiler flags", String (show cCcOpts)),
2309 ("Gcc Linker flags", String (show cGccLinkerOpts)),
2310 ("Ld Linker flags", String (show cLdLinkerOpts))