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,
39 ghcUsagePath, ghciUsagePath, topDir, tmpDir, rawSettings,
40 extraGccViaCFlags, systemPackageConfig,
41 pgm_L, pgm_P, pgm_F, pgm_c, pgm_s, pgm_a, pgm_l, pgm_dll, pgm_T,
42 pgm_sysman, pgm_windres, pgm_lo, pgm_lc,
43 opt_L, opt_P, opt_F, opt_c, opt_m, opt_a, opt_l,
44 opt_windres, opt_lo, opt_lc,
47 -- ** Manipulating DynFlags
48 defaultDynFlags, -- Settings -> DynFlags
49 initDynFlags, -- DynFlags -> IO DynFlags
51 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
58 -- ** Parsing DynFlags
60 parseDynamicNoPackageFlags,
63 supportedLanguagesAndExtensions,
65 -- ** DynFlag C compiler options
66 machdepCCOpts, picCCOpts,
68 -- * Configuration of the stg-to-stg passes
72 -- * Compiler configuration suitable for display to the user
75 -- Only in stage 2 can we be sure that the RTS
76 -- exposes the appropriate runtime boolean
81 #include "HsVersions.h"
83 #ifndef OMIT_NATIVE_CODEGEN
88 import PrelNames ( mAIN )
90 import {-# SOURCE #-} Packages (PackageState)
91 import DriverPhases ( Phase(..), phaseInputExt )
94 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
97 import Maybes ( orElse )
101 import Foreign.C ( CInt )
102 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
104 import System.IO.Unsafe ( unsafePerformIO )
106 import Control.Monad ( when )
110 import Data.Map (Map)
111 import qualified Data.Map as Map
113 import System.FilePath
114 import System.IO ( stderr, hPutChar )
116 -- -----------------------------------------------------------------------------
119 -- | Enumerates the simple on-or-off dynamic flags
126 | Opt_D_dump_cmmz_pretty
130 | Opt_D_dump_asm_native
131 | Opt_D_dump_asm_liveness
132 | Opt_D_dump_asm_coalesce
133 | Opt_D_dump_asm_regalloc
134 | Opt_D_dump_asm_regalloc_stages
135 | Opt_D_dump_asm_conflicts
136 | Opt_D_dump_asm_stats
137 | Opt_D_dump_asm_expanded
139 | Opt_D_dump_core_stats
145 | Opt_D_dump_inlinings
146 | Opt_D_dump_rule_firings
147 | Opt_D_dump_rule_rewrites
148 | Opt_D_dump_occur_anal
152 | Opt_D_dump_simpl_iterations
153 | Opt_D_dump_simpl_phases
162 | Opt_D_dump_worker_wrapper
163 | Opt_D_dump_rn_trace
164 | Opt_D_dump_rn_stats
166 | Opt_D_dump_simpl_stats
167 | Opt_D_dump_cs_trace -- Constraint solver in type checker
168 | Opt_D_dump_tc_trace
169 | Opt_D_dump_if_trace
170 | Opt_D_dump_vt_trace
177 | Opt_D_verbose_core2core
178 | Opt_D_verbose_stg2stg
180 | Opt_D_dump_hi_diffs
181 | Opt_D_dump_minimal_imports
182 | Opt_D_dump_mod_cycles
183 | Opt_D_dump_view_pattern_commoning
184 | Opt_D_faststring_stats
185 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
186 | Opt_D_no_debug_output
192 | Opt_WarnIsError -- -Werror; makes warnings fatal
193 | Opt_WarnDuplicateExports
195 | Opt_WarnImplicitPrelude
196 | Opt_WarnIncompletePatterns
197 | Opt_WarnIncompleteUniPatterns
198 | Opt_WarnIncompletePatternsRecUpd
199 | Opt_WarnMissingFields
200 | Opt_WarnMissingImportList
201 | Opt_WarnMissingMethods
202 | Opt_WarnMissingSigs
203 | Opt_WarnMissingLocalSigs
204 | Opt_WarnNameShadowing
205 | Opt_WarnOverlappingPatterns
206 | Opt_WarnTypeDefaults
207 | Opt_WarnMonomorphism
208 | Opt_WarnUnusedBinds
209 | Opt_WarnUnusedImports
210 | Opt_WarnUnusedMatches
211 | Opt_WarnWarningsDeprecations
212 | Opt_WarnDeprecatedFlags
213 | Opt_WarnDodgyExports
214 | Opt_WarnDodgyImports
216 | Opt_WarnAutoOrphans
219 | Opt_WarnUnrecognisedPragmas
220 | Opt_WarnDodgyForeignImports
221 | Opt_WarnLazyUnliftedBindings
222 | Opt_WarnUnusedDoBind
223 | Opt_WarnWrongDoBind
224 | Opt_WarnAlternativeLayoutRuleTransitional
226 | Opt_PrintExplicitForalls
233 | Opt_StaticArgumentTransformation
237 | Opt_DoLambdaEtaExpansion
241 | Opt_UnboxStrictFields
242 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
244 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
246 | Opt_RegsGraph -- do graph coloring register allocation
247 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
250 | Opt_IgnoreInterfacePragmas
251 | Opt_OmitInterfacePragmas
252 | Opt_ExposeAllUnfoldings
255 | Opt_AutoSccsOnAllToplevs
256 | Opt_AutoSccsOnExportedToplevs
257 | Opt_AutoSccsOnIndividualCafs
263 | Opt_ExcessPrecision
264 | Opt_EagerBlackHoling
265 | Opt_ReadUserPackageConf
269 | Opt_HideAllPackages
270 | Opt_PrintBindResult
274 | Opt_BreakOnException
276 | Opt_PrintEvldWithShow
277 | Opt_PrintBindContents
280 | Opt_EmitExternalCore
282 | Opt_BuildingCabalPackage
290 | Opt_ConvertToZipCfgAndBack
291 | Opt_AutoLinkPackages
292 | Opt_ImplicitImportQualified
300 | Opt_KeepRawTokenStream
305 data Language = Haskell98 | Haskell2010
309 | Opt_OverlappingInstances
310 | Opt_UndecidableInstances
311 | Opt_IncoherentInstances
312 | Opt_MonomorphismRestriction
315 | Opt_RelaxedPolyRec -- Deprecated
316 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
317 | Opt_ForeignFunctionInterface
318 | Opt_UnliftedFFITypes
319 | Opt_GHCForeignImportPrim
320 | Opt_ParallelArrays -- Syntactic support for parallel arrays
321 | Opt_Arrows -- Arrow-notation syntax
322 | Opt_TemplateHaskell
325 | Opt_Generics -- "Derivable type classes"
326 | Opt_ImplicitPrelude
327 | Opt_ScopedTypeVariables
331 | Opt_OverloadedStrings
332 | Opt_DisambiguateRecordFields
333 | Opt_RecordWildCards
339 | Opt_DoAndIfThenElse
340 | Opt_RebindableSyntax
342 | Opt_StandaloneDeriving
343 | Opt_DeriveDataTypeable
345 | Opt_DeriveTraversable
348 | Opt_TypeSynonymInstances
349 | Opt_FlexibleContexts
350 | Opt_FlexibleInstances
351 | Opt_ConstrainedClassMethods
352 | Opt_MultiParamTypeClasses
353 | Opt_FunctionalDependencies
355 | Opt_PolymorphicComponents
356 | Opt_ExistentialQuantification
360 | Opt_ParallelListComp
361 | Opt_TransformListComp
362 | Opt_GeneralizedNewtypeDeriving
365 | Opt_PostfixOperators
368 | Opt_LiberalTypeSynonyms
371 | Opt_ImpredicativeTypes
375 | Opt_AlternativeLayoutRule
376 | Opt_AlternativeLayoutRuleTransitional
377 | Opt_DatatypeContexts
378 | Opt_NondecreasingIndentation
382 -- | Contains not only a collection of 'DynFlag's but also a plethora of
383 -- information relating to the compilation of a single file or GHC session
384 data DynFlags = DynFlags {
387 hscTarget :: HscTarget,
388 hscOutName :: String, -- ^ Name of the output file
389 extCoreName :: String, -- ^ Name of the .hcr output file
390 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
391 optLevel :: Int, -- ^ Optimisation level
392 simplPhases :: Int, -- ^ Number of simplifier phases
393 maxSimplIterations :: Int, -- ^ Max simplifier iterations
394 shouldDumpSimplPhase :: Maybe String,
395 ruleCheck :: Maybe String,
396 strictnessBefore :: [Int], -- ^ Additional demand analysis
398 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
399 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
400 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
401 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
402 -- See CoreMonad.FloatOutSwitches
404 #ifndef OMIT_NATIVE_CODEGEN
405 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
407 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
408 importPaths :: [FilePath],
410 mainFunIs :: Maybe String,
411 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
413 dphBackend :: DPHBackend,
415 thisPackage :: PackageId, -- ^ name of package currently being compiled
418 ways :: [Way], -- ^ Way flags from the command line
419 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
420 rtsBuildTag :: String, -- ^ The RTS \"way\"
422 -- For object splitting
423 splitInfo :: Maybe (String,Int),
426 objectDir :: Maybe String,
427 dylibInstallName :: Maybe String,
428 hiDir :: Maybe String,
429 stubDir :: Maybe String,
435 outputFile :: Maybe String,
436 outputHi :: Maybe String,
437 dynLibLoader :: DynLibLoader,
439 -- | This is set by 'DriverPipeline.runPipeline' based on where
440 -- its output is going.
441 dumpPrefix :: Maybe FilePath,
443 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
444 -- Set by @-ddump-file-prefix@
445 dumpPrefixForce :: Maybe FilePath,
447 includePaths :: [String],
448 libraryPaths :: [String],
449 frameworkPaths :: [String], -- used on darwin only
450 cmdlineFrameworks :: [String], -- ditto
452 rtsOpts :: Maybe String,
453 rtsOptsEnabled :: RtsOptsEnabled,
455 hpcDir :: String, -- ^ Path to store the .mix files
457 settings :: Settings,
460 depMakefile :: FilePath,
461 depIncludePkgDeps :: Bool,
462 depExcludeMods :: [ModuleName],
463 depSuffixes :: [String],
466 extraPkgConfs :: [FilePath],
467 -- ^ The @-package-conf@ flags given on the command line, in the order
470 packageFlags :: [PackageFlag],
471 -- ^ The @-package@ and @-hide-package@ flags from the command-line
474 -- NB. do not modify this field, it is calculated by
475 -- Packages.initPackages and Packages.updatePackages.
476 pkgDatabase :: Maybe [PackageConfig],
477 pkgState :: PackageState,
480 -- These have to be IORefs, because the defaultCleanupHandler needs to
481 -- know what to clean when an exception happens
482 filesToClean :: IORef [FilePath],
483 dirsToClean :: IORef (Map FilePath FilePath),
487 -- Don't change this without updating extensionFlags:
488 language :: Maybe Language,
489 -- Don't change this without updating extensionFlags:
490 extensions :: [OnOff ExtensionFlag],
491 -- extensionFlags should always be equal to
492 -- flattenExtensionFlags language extensions
493 extensionFlags :: [ExtensionFlag],
495 -- | Message output action: use "ErrUtils" instead of this if you can
496 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
498 haddockOptions :: Maybe String
501 data Settings = Settings {
502 sGhcUsagePath :: FilePath, -- Filled in by SysTools
503 sGhciUsagePath :: FilePath, -- ditto
505 sTmpDir :: String, -- no trailing '/'
506 -- You shouldn't need to look things up in rawSettings directly.
507 -- They should have their own fields instead.
508 sRawSettings :: [(String, String)],
509 sExtraGccViaCFlags :: [String],
510 sSystemPackageConfig :: FilePath,
511 -- commands for particular phases
513 sPgm_P :: (String,[Option]),
515 sPgm_c :: (String,[Option]),
516 sPgm_s :: (String,[Option]),
517 sPgm_a :: (String,[Option]),
518 sPgm_l :: (String,[Option]),
519 sPgm_dll :: (String,[Option]),
521 sPgm_sysman :: String,
522 sPgm_windres :: String,
523 sPgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
524 sPgm_lc :: (String,[Option]), -- LLVM: llc static compiler
525 -- options for particular phases
533 sOpt_windres :: [String],
534 sOpt_lo :: [String], -- LLVM: llvm optimiser
535 sOpt_lc :: [String] -- LLVM: llc static compiler
539 ghcUsagePath :: DynFlags -> FilePath
540 ghcUsagePath dflags = sGhcUsagePath (settings dflags)
541 ghciUsagePath :: DynFlags -> FilePath
542 ghciUsagePath dflags = sGhciUsagePath (settings dflags)
543 topDir :: DynFlags -> FilePath
544 topDir dflags = sTopDir (settings dflags)
545 tmpDir :: DynFlags -> String
546 tmpDir dflags = sTmpDir (settings dflags)
547 rawSettings :: DynFlags -> [(String, String)]
548 rawSettings dflags = sRawSettings (settings dflags)
549 extraGccViaCFlags :: DynFlags -> [String]
550 extraGccViaCFlags dflags = sExtraGccViaCFlags (settings dflags)
551 systemPackageConfig :: DynFlags -> FilePath
552 systemPackageConfig dflags = sSystemPackageConfig (settings dflags)
553 pgm_L :: DynFlags -> String
554 pgm_L dflags = sPgm_L (settings dflags)
555 pgm_P :: DynFlags -> (String,[Option])
556 pgm_P dflags = sPgm_P (settings dflags)
557 pgm_F :: DynFlags -> String
558 pgm_F dflags = sPgm_F (settings dflags)
559 pgm_c :: DynFlags -> (String,[Option])
560 pgm_c dflags = sPgm_c (settings dflags)
561 pgm_s :: DynFlags -> (String,[Option])
562 pgm_s dflags = sPgm_s (settings dflags)
563 pgm_a :: DynFlags -> (String,[Option])
564 pgm_a dflags = sPgm_a (settings dflags)
565 pgm_l :: DynFlags -> (String,[Option])
566 pgm_l dflags = sPgm_l (settings dflags)
567 pgm_dll :: DynFlags -> (String,[Option])
568 pgm_dll dflags = sPgm_dll (settings dflags)
569 pgm_T :: DynFlags -> String
570 pgm_T dflags = sPgm_T (settings dflags)
571 pgm_sysman :: DynFlags -> String
572 pgm_sysman dflags = sPgm_sysman (settings dflags)
573 pgm_windres :: DynFlags -> String
574 pgm_windres dflags = sPgm_windres (settings dflags)
575 pgm_lo :: DynFlags -> (String,[Option])
576 pgm_lo dflags = sPgm_lo (settings dflags)
577 pgm_lc :: DynFlags -> (String,[Option])
578 pgm_lc dflags = sPgm_lc (settings dflags)
579 opt_L :: DynFlags -> [String]
580 opt_L dflags = sOpt_L (settings dflags)
581 opt_P :: DynFlags -> [String]
582 opt_P dflags = sOpt_P (settings dflags)
583 opt_F :: DynFlags -> [String]
584 opt_F dflags = sOpt_F (settings dflags)
585 opt_c :: DynFlags -> [String]
586 opt_c dflags = sOpt_c (settings dflags)
587 opt_m :: DynFlags -> [String]
588 opt_m dflags = sOpt_m (settings dflags)
589 opt_a :: DynFlags -> [String]
590 opt_a dflags = sOpt_a (settings dflags)
591 opt_l :: DynFlags -> [String]
592 opt_l dflags = sOpt_l (settings dflags)
593 opt_windres :: DynFlags -> [String]
594 opt_windres dflags = sOpt_windres (settings dflags)
595 opt_lo :: DynFlags -> [String]
596 opt_lo dflags = sOpt_lo (settings dflags)
597 opt_lc :: DynFlags -> [String]
598 opt_lc dflags = sOpt_lc (settings dflags)
600 wayNames :: DynFlags -> [WayName]
601 wayNames = map wayName . ways
603 -- | The target code type of the compilation (if any).
605 -- Whenever you change the target, also make sure to set 'ghcLink' to
606 -- something sensible.
608 -- 'HscNothing' can be used to avoid generating any output, however, note
611 -- * This will not run the desugaring step, thus no warnings generated in
612 -- this step will be output. In particular, this includes warnings related
613 -- to pattern matching. You can run the desugarer manually using
614 -- 'GHC.desugarModule'.
616 -- * If a program uses Template Haskell the typechecker may try to run code
617 -- from an imported module. This will fail if no code has been generated
618 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
619 -- whether this might be the case and choose to either switch to a
620 -- different target or avoid typechecking such modules. (The latter may
621 -- preferable for security reasons.)
624 = HscC -- ^ Generate C code.
625 | HscAsm -- ^ Generate assembly using the native code generator.
626 | HscLlvm -- ^ Generate assembly using the llvm code generator.
627 | HscJava -- ^ Generate Java bytecode.
628 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
629 | HscNothing -- ^ Don't generate any code. See notes above.
632 -- | Will this target result in an object file on the disk?
633 isObjectTarget :: HscTarget -> Bool
634 isObjectTarget HscC = True
635 isObjectTarget HscAsm = True
636 isObjectTarget HscLlvm = True
637 isObjectTarget _ = False
639 -- | The 'GhcMode' tells us whether we're doing multi-module
640 -- compilation (controlled via the "GHC" API) or one-shot
641 -- (single-module) compilation. This makes a difference primarily to
642 -- the "Finder": in one-shot mode we look for interface files for
643 -- imported modules, but in multi-module mode we look for source files
644 -- in order to check whether they need to be recompiled.
646 = CompManager -- ^ @\-\-make@, GHCi, etc.
647 | OneShot -- ^ @ghc -c Foo.hs@
648 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
651 instance Outputable GhcMode where
652 ppr CompManager = ptext (sLit "CompManager")
653 ppr OneShot = ptext (sLit "OneShot")
654 ppr MkDepend = ptext (sLit "MkDepend")
656 isOneShot :: GhcMode -> Bool
657 isOneShot OneShot = True
658 isOneShot _other = False
660 -- | What to do in the link step, if there is one.
662 = NoLink -- ^ Don't link at all
663 | LinkBinary -- ^ Link object code into a binary
664 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
665 -- bytecode and object code).
666 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
669 isNoLink :: GhcLink -> Bool
670 isNoLink NoLink = True
673 -- Is it worth evaluating this Bool and caching it in the DynFlags value
674 -- during initDynFlags?
675 doingTickyProfiling :: DynFlags -> Bool
676 doingTickyProfiling _ = opt_Ticky
677 -- XXX -ticky is a static flag, because it implies -debug which is also
678 -- static. If the way flags were made dynamic, we could fix this.
681 = ExposePackage String
682 | ExposePackageId String
684 | IgnorePackage String
687 defaultHscTarget :: HscTarget
688 defaultHscTarget = defaultObjectTarget
690 -- | The 'HscTarget' value corresponding to the default way to create
691 -- object files on the current platform.
692 defaultObjectTarget :: HscTarget
694 | cGhcWithNativeCodeGen == "YES" = HscAsm
702 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
705 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
706 initDynFlags :: DynFlags -> IO DynFlags
707 initDynFlags dflags = do
708 -- someday these will be dynamic flags
709 ways <- readIORef v_Ways
710 refFilesToClean <- newIORef []
711 refDirsToClean <- newIORef Map.empty
714 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
715 rtsBuildTag = mkBuildTag ways,
716 filesToClean = refFilesToClean,
717 dirsToClean = refDirsToClean
720 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
721 -- and must be fully initialized by 'GHC.newSession' first.
722 defaultDynFlags :: Settings -> DynFlags
723 defaultDynFlags mySettings =
725 ghcMode = CompManager,
726 ghcLink = LinkBinary,
727 hscTarget = defaultHscTarget,
733 maxSimplIterations = 4,
734 shouldDumpSimplPhase = Nothing,
736 specConstrThreshold = Just 200,
737 specConstrCount = Just 3,
738 liberateCaseThreshold = Just 200,
739 floatLamArgs = Just 0, -- Default: float only if no fvs
740 strictnessBefore = [],
742 #ifndef OMIT_NATIVE_CODEGEN
743 targetPlatform = defaultTargetPlatform,
745 cmdlineHcIncludes = [],
749 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
751 dphBackend = DPHNone,
753 thisPackage = mainPackageId,
756 dylibInstallName = Nothing,
760 objectSuf = phaseInputExt StopLn,
761 hcSuf = phaseInputExt HCc,
764 outputFile = Nothing,
766 dynLibLoader = SystemDependent,
767 dumpPrefix = Nothing,
768 dumpPrefixForce = Nothing,
772 cmdlineFrameworks = [],
774 rtsOptsEnabled = RtsOptsSafeOnly,
780 pkgDatabase = Nothing,
781 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
782 ways = panic "defaultDynFlags: No ways",
783 buildTag = panic "defaultDynFlags: No buildTag",
784 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
786 settings = mySettings,
788 depMakefile = "Makefile",
789 depIncludePkgDeps = False,
792 -- end of ghc -M values
793 filesToClean = panic "defaultDynFlags: No filesToClean",
794 dirsToClean = panic "defaultDynFlags: No dirsToClean",
795 haddockOptions = Nothing,
796 flags = defaultFlags,
799 extensionFlags = flattenExtensionFlags Nothing [],
801 log_action = \severity srcSpan style msg ->
803 SevOutput -> printOutput (msg style)
804 SevInfo -> printErrs (msg style)
805 SevFatal -> printErrs (msg style)
808 printErrs ((mkLocMessage srcSpan msg) style)
809 -- careful (#2302): printErrs prints in UTF-8, whereas
810 -- converting to string first and using hPutStr would
811 -- just emit the low 8 bits of each unicode char.
815 Note [Verbosity levels]
816 ~~~~~~~~~~~~~~~~~~~~~~~
817 0 | print errors & warnings only
818 1 | minimal verbosity: print "compiling M ... done." for each module.
819 2 | equivalent to -dshow-passes
820 3 | equivalent to existing "ghc -v"
821 4 | "ghc -v -ddump-most"
822 5 | "ghc -v -ddump-all"
828 -- OnOffs accumulate in reverse order, so we use foldr in order to
829 -- process them in the right order
830 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
832 flattenExtensionFlags ml = foldr f defaultExtensionFlags
833 where f (On f) flags = f : delete f flags
834 f (Off f) flags = delete f flags
835 defaultExtensionFlags = languageExtensions ml
837 languageExtensions :: Maybe Language -> [ExtensionFlag]
839 languageExtensions Nothing
840 -- Nothing => the default case
841 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
842 -- behaviour the default, to see if anyone notices
844 -- In due course I'd like Opt_MonoLocalBinds to be on by default
845 -- But NB it's implied by GADTs etc
846 -- SLPJ September 2010
847 : Opt_NondecreasingIndentation -- This has been on by default for some time
848 : languageExtensions (Just Haskell2010)
850 languageExtensions (Just Haskell98)
851 = [Opt_ImplicitPrelude,
852 Opt_MonomorphismRestriction,
854 Opt_DatatypeContexts,
855 Opt_NondecreasingIndentation
856 -- strictly speaking non-standard, but we always had this
857 -- on implicitly before the option was added in 7.1, and
858 -- turning it off breaks code, so we're keeping it on for
859 -- backwards compatibility. Cabal uses -XHaskell98 by
860 -- default unless you specify another language.
863 languageExtensions (Just Haskell2010)
864 = [Opt_ImplicitPrelude,
865 Opt_MonomorphismRestriction,
866 Opt_DatatypeContexts,
868 Opt_ForeignFunctionInterface,
873 -- | Test whether a 'DynFlag' is set
874 dopt :: DynFlag -> DynFlags -> Bool
875 dopt f dflags = f `elem` (flags dflags)
878 dopt_set :: DynFlags -> DynFlag -> DynFlags
879 dopt_set dfs f = dfs{ flags = f : flags dfs }
881 -- | Unset a 'DynFlag'
882 dopt_unset :: DynFlags -> DynFlag -> DynFlags
883 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
885 -- | Test whether a 'ExtensionFlag' is set
886 xopt :: ExtensionFlag -> DynFlags -> Bool
887 xopt f dflags = f `elem` extensionFlags dflags
889 -- | Set a 'ExtensionFlag'
890 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
892 = let onoffs = On f : extensions dfs
893 in dfs { extensions = onoffs,
894 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
896 -- | Unset a 'ExtensionFlag'
897 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
899 = let onoffs = Off f : extensions dfs
900 in dfs { extensions = onoffs,
901 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
903 setLanguage :: Language -> DynP ()
904 setLanguage l = upd f
905 where f dfs = let mLang = Just l
906 oneoffs = extensions dfs
909 extensionFlags = flattenExtensionFlags mLang oneoffs
912 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
913 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
914 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
915 -> [a] -- ^ Correctly ordered extracted options
916 getOpts dflags opts = reverse (opts dflags)
917 -- We add to the options from the front, so we need to reverse the list
919 -- | Gets the verbosity flag for the current verbosity level. This is fed to
920 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
921 getVerbFlags :: DynFlags -> [String]
923 | verbosity dflags >= 4 = ["-v"]
926 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
927 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
928 setPgmP, addOptl, addOptP,
929 addCmdlineFramework, addHaddockOpts
930 :: String -> DynFlags -> DynFlags
931 setOutputFile, setOutputHi, setDumpPrefixForce
932 :: Maybe String -> DynFlags -> DynFlags
934 setObjectDir f d = d{ objectDir = Just f}
935 setHiDir f d = d{ hiDir = Just f}
936 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
937 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
938 -- \#included from the .hc file when compiling via C (i.e. unregisterised
940 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
941 setDylibInstallName f d = d{ dylibInstallName = Just f}
943 setObjectSuf f d = d{ objectSuf = f}
944 setHiSuf f d = d{ hiSuf = f}
945 setHcSuf f d = d{ hcSuf = f}
947 setOutputFile f d = d{ outputFile = f}
948 setOutputHi f d = d{ outputHi = f}
950 parseDynLibLoaderMode f d =
952 ("deploy", "") -> d{ dynLibLoader = Deployable }
953 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
954 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
956 setDumpPrefixForce f d = d { dumpPrefixForce = f}
958 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
959 -- Config.hs should really use Option.
960 setPgmP f = let (pgm:args) = words f in alterSettings (\s -> s { sPgm_P = (pgm, map Option args)})
961 addOptl f = alterSettings (\s -> s { sOpt_l = f : sOpt_l s})
962 addOptP f = alterSettings (\s -> s { sOpt_P = f : sOpt_P s})
965 setDepMakefile :: FilePath -> DynFlags -> DynFlags
966 setDepMakefile f d = d { depMakefile = deOptDep f }
968 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
969 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
971 addDepExcludeMod :: String -> DynFlags -> DynFlags
973 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
975 addDepSuffix :: FilePath -> DynFlags -> DynFlags
976 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
979 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
980 -- we need to strip the "-optdep" off of the arg
981 deOptDep :: String -> String
982 deOptDep x = case stripPrefix "-optdep" x of
986 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
988 addHaddockOpts f d = d{ haddockOptions = Just f}
990 -- -----------------------------------------------------------------------------
991 -- Command-line options
993 -- | When invoking external tools as part of the compilation pipeline, we
994 -- pass these a sequence of options on the command-line. Rather than
995 -- just using a list of Strings, we use a type that allows us to distinguish
996 -- between filepaths and 'other stuff'. The reason for this is that
997 -- this type gives us a handle on transforming filenames, and filenames only,
998 -- to whatever format they're expected to be on a particular platform.
1000 = FileOption -- an entry that _contains_ filename(s) / filepaths.
1001 String -- a non-filepath prefix that shouldn't be
1002 -- transformed (e.g., "/out=")
1003 String -- the filepath/filename portion
1006 showOpt :: Option -> String
1007 showOpt (FileOption pre f) = pre ++ f
1008 showOpt (Option s) = s
1010 -----------------------------------------------------------------------------
1011 -- Setting the optimisation level
1013 updOptLevel :: Int -> DynFlags -> DynFlags
1014 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
1016 = dfs2{ optLevel = final_n }
1018 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
1019 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
1020 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
1022 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
1023 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
1025 -- -----------------------------------------------------------------------------
1026 -- StgToDo: abstraction of stg-to-stg passes to run.
1029 = StgDoMassageForProfiling -- should be (next to) last
1030 -- There's also setStgVarInfo, but its absolute "lastness"
1031 -- is so critical that it is hardwired in (no flag).
1034 getStgToDo :: DynFlags -> [StgToDo]
1038 stg_stats = dopt Opt_StgStats dflags
1040 todo1 = if stg_stats then [D_stg_stats] else []
1042 todo2 | WayProf `elem` wayNames dflags
1043 = StgDoMassageForProfiling : todo1
1047 {- **********************************************************************
1051 %********************************************************************* -}
1053 -- -----------------------------------------------------------------------------
1054 -- Parsing the dynamic flags.
1056 -- | Parse dynamic flags from a list of command line arguments. Returns the
1057 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1058 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1059 -- flags or missing arguments).
1060 parseDynamicFlags :: Monad m =>
1061 DynFlags -> [Located String]
1062 -> m (DynFlags, [Located String], [Located String])
1063 -- ^ Updated 'DynFlags', left-over arguments, and
1064 -- list of warnings.
1065 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1067 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1068 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1069 parseDynamicNoPackageFlags :: Monad m =>
1070 DynFlags -> [Located String]
1071 -> m (DynFlags, [Located String], [Located String])
1072 -- ^ Updated 'DynFlags', left-over arguments, and
1073 -- list of warnings.
1074 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1076 parseDynamicFlags_ :: Monad m =>
1077 DynFlags -> [Located String] -> Bool
1078 -> m (DynFlags, [Located String], [Located String])
1079 parseDynamicFlags_ dflags0 args pkg_flags = do
1080 -- XXX Legacy support code
1081 -- We used to accept things like
1082 -- optdep-f -optdepdepend
1083 -- optdep-f -optdep depend
1084 -- optdep -f -optdepdepend
1085 -- optdep -f -optdep depend
1086 -- but the spaces trip up proper argument handling. So get rid of them.
1087 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1088 f (x : xs) = x : f xs
1092 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1093 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1094 | otherwise = dynamic_flags
1096 let ((leftover, errs, warns), dflags1)
1097 = runCmdLine (processArgs flag_spec args') dflags0
1098 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1100 let (pic_warns, dflags2)
1101 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1102 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1103 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1104 ++ "dynamic on this platform;\n ignoring -fllvm"],
1105 dflags1{ hscTarget = HscAsm })
1107 | otherwise = ([], dflags1)
1109 return (dflags2, leftover, pic_warns ++ warns)
1112 {- **********************************************************************
1114 DynFlags specifications
1116 %********************************************************************* -}
1118 allFlags :: [String]
1119 allFlags = map ('-':) $
1120 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1121 map ("fno-"++) flags ++
1122 map ("f"++) flags ++
1123 map ("f"++) flags' ++
1124 map ("X"++) supportedExtensions
1125 where ok (PrefixPred _ _) = False
1127 flags = [ name | (name, _, _) <- fFlags ]
1128 flags' = [ name | (name, _, _) <- fLangFlags ]
1130 --------------- The main flags themselves ------------------
1131 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1133 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1134 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1135 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1137 (HasArg (\s -> do { addCmdlineHCInclude s
1138 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1139 , Flag "v" (OptIntSuffix setVerbosity)
1141 ------- Specific phases --------------------------------------------
1142 -- need to appear before -pgmL to be parsed as LLVM flags.
1143 , Flag "pgmlo" (hasArg (\f -> alterSettings (\s -> s { sPgm_lo = (f,[])})))
1144 , Flag "pgmlc" (hasArg (\f -> alterSettings (\s -> s { sPgm_lc = (f,[])})))
1145 , Flag "pgmL" (hasArg (\f -> alterSettings (\s -> s { sPgm_L = f})))
1146 , Flag "pgmP" (hasArg setPgmP)
1147 , Flag "pgmF" (hasArg (\f -> alterSettings (\s -> s { sPgm_F = f})))
1148 , Flag "pgmc" (hasArg (\f -> alterSettings (\s -> s { sPgm_c = (f,[])})))
1149 , Flag "pgmm" (HasArg (\_ -> addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1150 , Flag "pgms" (hasArg (\f -> alterSettings (\s -> s { sPgm_s = (f,[])})))
1151 , Flag "pgma" (hasArg (\f -> alterSettings (\s -> s { sPgm_a = (f,[])})))
1152 , Flag "pgml" (hasArg (\f -> alterSettings (\s -> s { sPgm_l = (f,[])})))
1153 , Flag "pgmdll" (hasArg (\f -> alterSettings (\s -> s { sPgm_dll = (f,[])})))
1154 , Flag "pgmwindres" (hasArg (\f -> alterSettings (\s -> s { sPgm_windres = f})))
1156 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1157 , Flag "optlo" (hasArg (\f -> alterSettings (\s -> s { sOpt_lo = f : sOpt_lo s})))
1158 , Flag "optlc" (hasArg (\f -> alterSettings (\s -> s { sOpt_lc = f : sOpt_lc s})))
1159 , Flag "optL" (hasArg (\f -> alterSettings (\s -> s { sOpt_L = f : sOpt_L s})))
1160 , Flag "optP" (hasArg addOptP)
1161 , Flag "optF" (hasArg (\f -> alterSettings (\s -> s { sOpt_F = f : sOpt_F s})))
1162 , Flag "optc" (hasArg (\f -> alterSettings (\s -> s { sOpt_c = f : sOpt_c s})))
1163 , Flag "optm" (hasArg (\f -> alterSettings (\s -> s { sOpt_m = f : sOpt_m s})))
1164 , Flag "opta" (hasArg (\f -> alterSettings (\s -> s { sOpt_a = f : sOpt_a s})))
1165 , Flag "optl" (hasArg addOptl)
1166 , Flag "optwindres" (hasArg (\f -> alterSettings (\s -> s { sOpt_windres = f : sOpt_windres s})))
1169 (NoArg (if can_split
1170 then setDynFlag Opt_SplitObjs
1171 else addWarn "ignoring -fsplit-objs"))
1173 -------- ghc -M -----------------------------------------------------
1174 , Flag "dep-suffix" (hasArg addDepSuffix)
1175 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1176 , Flag "dep-makefile" (hasArg setDepMakefile)
1177 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1178 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1179 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1180 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1181 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1182 , Flag "exclude-module" (hasArg addDepExcludeMod)
1183 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1184 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1186 -------- Linking ----------------------------------------------------
1187 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1188 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1189 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1190 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1192 ------- Libraries ---------------------------------------------------
1193 , Flag "L" (Prefix addLibraryPath)
1194 , Flag "l" (AnySuffix (upd . addOptl))
1196 ------- Frameworks --------------------------------------------------
1197 -- -framework-path should really be -F ...
1198 , Flag "framework-path" (HasArg addFrameworkPath)
1199 , Flag "framework" (hasArg addCmdlineFramework)
1201 ------- Output Redirection ------------------------------------------
1202 , Flag "odir" (hasArg setObjectDir)
1203 , Flag "o" (SepArg (upd . setOutputFile . Just))
1204 , Flag "ohi" (hasArg (setOutputHi . Just ))
1205 , Flag "osuf" (hasArg setObjectSuf)
1206 , Flag "hcsuf" (hasArg setHcSuf)
1207 , Flag "hisuf" (hasArg setHiSuf)
1208 , Flag "hidir" (hasArg setHiDir)
1209 , Flag "tmpdir" (hasArg setTmpDir)
1210 , Flag "stubdir" (hasArg setStubDir)
1211 , Flag "outputdir" (hasArg setOutputDir)
1212 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1214 ------- Keeping temporary files -------------------------------------
1215 -- These can be singular (think ghc -c) or plural (think ghc --make)
1216 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1217 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1218 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1219 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1220 , Flag "keep-raw-s-file" (NoArg (addWarn "The -keep-raw-s-file flag does nothing; it will be removed in a future GHC release"))
1221 , Flag "keep-raw-s-files" (NoArg (addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1222 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1223 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1224 -- This only makes sense as plural
1225 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1227 ------- Miscellaneous ----------------------------------------------
1228 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1229 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1230 , Flag "with-rtsopts" (HasArg setRtsOpts)
1231 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1232 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1233 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1234 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1235 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1236 , Flag "main-is" (SepArg setMainIs)
1237 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1238 , Flag "haddock-opts" (hasArg addHaddockOpts)
1239 , Flag "hpcdir" (SepArg setOptHpcDir)
1241 ------- recompilation checker --------------------------------------
1242 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1243 ; deprecate "Use -fno-force-recomp instead" }))
1244 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1245 ; deprecate "Use -fforce-recomp instead" }))
1247 ------ HsCpp opts ---------------------------------------------------
1248 , Flag "D" (AnySuffix (upd . addOptP))
1249 , Flag "U" (AnySuffix (upd . addOptP))
1251 ------- Include/Import Paths ----------------------------------------
1252 , Flag "I" (Prefix addIncludePath)
1253 , Flag "i" (OptPrefix addImportPath)
1255 ------ Debugging ----------------------------------------------------
1256 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1258 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1259 , Flag "ddump-raw-cmm" (setDumpFlag Opt_D_dump_raw_cmm)
1260 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1261 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1262 , Flag "ddump-core-stats" (setDumpFlag Opt_D_dump_core_stats)
1263 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1264 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1265 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1266 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1267 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1268 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1269 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1270 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1271 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1272 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1273 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1274 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1275 ; setDumpFlag' Opt_D_dump_llvm}))
1276 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1277 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1278 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1279 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1280 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1281 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1282 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1283 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1284 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1285 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1286 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1287 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1288 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1289 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1290 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1291 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1292 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1293 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1294 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1295 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1296 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1297 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1298 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1299 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1300 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1301 , Flag "ddump-cs-trace" (setDumpFlag Opt_D_dump_cs_trace)
1302 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1303 , Flag "ddump-vt-trace" (setDumpFlag Opt_D_dump_vt_trace)
1304 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1305 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1306 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1307 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1308 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1309 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1310 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1311 ; setVerboseCore2Core }))
1312 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1313 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1314 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1315 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1316 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1317 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1318 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1319 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1320 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1321 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1322 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1323 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1324 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1325 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1326 , Flag "dshow-passes" (NoArg (do forceRecompile
1327 setVerbosity (Just 2)))
1328 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1330 ------ Machine dependant (-m<blah>) stuff ---------------------------
1332 , Flag "monly-2-regs" (NoArg (addWarn "The -monly-2-regs flag does nothing; it will be removed in a future GHC release"))
1333 , Flag "monly-3-regs" (NoArg (addWarn "The -monly-3-regs flag does nothing; it will be removed in a future GHC release"))
1334 , Flag "monly-4-regs" (NoArg (addWarn "The -monly-4-regs flag does nothing; it will be removed in a future GHC release"))
1335 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1337 ------ Warning opts -------------------------------------------------
1338 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1339 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1340 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1341 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1342 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1343 ; deprecate "Use -w instead" }))
1344 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1346 ------ Optimisation flags ------------------------------------------
1347 , Flag "O" (noArg (setOptLevel 1))
1348 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1349 , Flag "Odph" (noArg setDPHOpt)
1350 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1351 -- If the number is missing, use 1
1353 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1354 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1355 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1356 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1357 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1358 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1359 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1360 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1361 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1362 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1363 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1364 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1365 , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
1367 ------ Profiling ----------------------------------------------------
1369 -- XXX Should the -f* flags be deprecated?
1370 -- They don't seem to be documented
1371 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1372 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1373 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1374 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1375 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1376 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1377 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1378 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1379 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1381 ------ DPH flags ----------------------------------------------------
1383 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1384 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1385 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1386 , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
1388 ------ Compiler flags -----------------------------------------------
1390 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1391 , Flag "fvia-c" (NoArg
1392 (addWarn "The -fvia-c flag does nothing; it will be removed in a future GHC release"))
1393 , Flag "fvia-C" (NoArg
1394 (addWarn "The -fvia-C flag does nothing; it will be removed in a future GHC release"))
1395 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1397 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1398 setTarget HscNothing))
1399 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1400 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1401 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1402 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1404 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1405 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1406 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1407 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1408 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1409 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1410 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1412 package_flags :: [Flag (CmdLineP DynFlags)]
1414 ------- Packages ----------------------------------------------------
1415 Flag "package-conf" (HasArg extraPkgConf_)
1416 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1417 , Flag "package-name" (hasArg setPackageName)
1418 , Flag "package-id" (HasArg exposePackageId)
1419 , Flag "package" (HasArg exposePackage)
1420 , Flag "hide-package" (HasArg hidePackage)
1421 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1422 , Flag "ignore-package" (HasArg ignorePackage)
1423 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1424 ; deprecate "Use -package instead" }))
1427 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1428 -- False <=> we are turning the flag off
1429 turnOn :: TurnOnFlag; turnOn = True
1430 turnOff :: TurnOnFlag; turnOff = False
1433 = ( String -- Flag in string form
1434 , flag -- Flag in internal form
1435 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1436 -- Typically, emit a warning or error
1438 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1439 -> String -- ^ The flag prefix
1440 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1441 -> FlagSpec flag -- ^ Specification of this particular flag
1442 -> Flag (CmdLineP DynFlags)
1443 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1444 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1446 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1447 deprecatedForExtension lang turn_on
1448 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1450 flag | turn_on = lang
1451 | otherwise = "No"++lang
1453 useInstead :: String -> TurnOnFlag -> DynP ()
1454 useInstead flag turn_on
1455 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1457 no = if turn_on then "" else "no-"
1459 nop :: TurnOnFlag -> DynP ()
1462 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1463 fFlags :: [FlagSpec DynFlag]
1465 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1466 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1467 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1468 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1469 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1470 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1471 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1472 ( "warn-incomplete-uni-patterns", Opt_WarnIncompleteUniPatterns, nop ),
1473 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1474 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1475 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1476 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1477 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1478 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1479 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1480 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1481 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1482 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1483 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1484 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1485 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1486 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1487 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1488 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1489 ( "warn-orphans", Opt_WarnOrphans, nop ),
1490 ( "warn-identities", Opt_WarnIdentities, nop ),
1491 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1492 ( "warn-tabs", Opt_WarnTabs, nop ),
1493 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1494 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1495 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1496 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1497 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1498 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1499 ( "strictness", Opt_Strictness, nop ),
1500 ( "specialise", Opt_Specialise, nop ),
1501 ( "float-in", Opt_FloatIn, nop ),
1502 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1503 ( "full-laziness", Opt_FullLaziness, nop ),
1504 ( "liberate-case", Opt_LiberateCase, nop ),
1505 ( "spec-constr", Opt_SpecConstr, nop ),
1506 ( "cse", Opt_CSE, nop ),
1507 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1508 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1509 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1510 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1511 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1512 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1513 ( "case-merge", Opt_CaseMerge, nop ),
1514 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1515 ( "method-sharing", Opt_MethodSharing,
1516 \_ -> deprecate "doesn't do anything any more"),
1517 -- Remove altogether in GHC 7.2
1518 ( "dicts-cheap", Opt_DictsCheap, nop ),
1519 ( "excess-precision", Opt_ExcessPrecision, nop ),
1520 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1521 ( "print-bind-result", Opt_PrintBindResult, nop ),
1522 ( "force-recomp", Opt_ForceRecomp, nop ),
1523 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1524 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1525 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1526 ( "break-on-exception", Opt_BreakOnException, nop ),
1527 ( "break-on-error", Opt_BreakOnError, nop ),
1528 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1529 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1530 ( "run-cps", Opt_RunCPS, nop ),
1531 ( "run-cpsz", Opt_RunCPSZ, nop ),
1532 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1533 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1534 ( "vectorise", Opt_Vectorise, nop ),
1535 ( "regs-graph", Opt_RegsGraph, nop ),
1536 ( "regs-iterative", Opt_RegsIterative, nop ),
1537 ( "gen-manifest", Opt_GenManifest, nop ),
1538 ( "embed-manifest", Opt_EmbedManifest, nop ),
1539 ( "ext-core", Opt_EmitExternalCore, nop ),
1540 ( "shared-implib", Opt_SharedImplib, nop ),
1541 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1542 ( "helpful-errors", Opt_HelpfulErrors, nop ),
1543 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1544 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1547 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1548 fLangFlags :: [FlagSpec ExtensionFlag]
1550 ( "th", Opt_TemplateHaskell,
1551 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1552 ( "fi", Opt_ForeignFunctionInterface,
1553 deprecatedForExtension "ForeignFunctionInterface" ),
1554 ( "ffi", Opt_ForeignFunctionInterface,
1555 deprecatedForExtension "ForeignFunctionInterface" ),
1556 ( "arrows", Opt_Arrows,
1557 deprecatedForExtension "Arrows" ),
1558 ( "generics", Opt_Generics,
1559 deprecatedForExtension "Generics" ),
1560 ( "implicit-prelude", Opt_ImplicitPrelude,
1561 deprecatedForExtension "ImplicitPrelude" ),
1562 ( "bang-patterns", Opt_BangPatterns,
1563 deprecatedForExtension "BangPatterns" ),
1564 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1565 deprecatedForExtension "MonomorphismRestriction" ),
1566 ( "mono-pat-binds", Opt_MonoPatBinds,
1567 deprecatedForExtension "MonoPatBinds" ),
1568 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1569 deprecatedForExtension "ExtendedDefaultRules" ),
1570 ( "implicit-params", Opt_ImplicitParams,
1571 deprecatedForExtension "ImplicitParams" ),
1572 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1573 deprecatedForExtension "ScopedTypeVariables" ),
1574 ( "parr", Opt_ParallelArrays,
1575 deprecatedForExtension "ParallelArrays" ),
1576 ( "PArr", Opt_ParallelArrays,
1577 deprecatedForExtension "ParallelArrays" ),
1578 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1579 deprecatedForExtension "OverlappingInstances" ),
1580 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1581 deprecatedForExtension "UndecidableInstances" ),
1582 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1583 deprecatedForExtension "IncoherentInstances" )
1586 supportedLanguages :: [String]
1587 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1589 supportedExtensions :: [String]
1590 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1592 supportedLanguagesAndExtensions :: [String]
1593 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1595 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1596 languageFlags :: [FlagSpec Language]
1598 ( "Haskell98", Haskell98, nop ),
1599 ( "Haskell2010", Haskell2010, nop )
1602 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1603 xFlags :: [FlagSpec ExtensionFlag]
1605 ( "CPP", Opt_Cpp, nop ),
1606 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1607 ( "TupleSections", Opt_TupleSections, nop ),
1608 ( "PatternGuards", Opt_PatternGuards, nop ),
1609 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1610 ( "MagicHash", Opt_MagicHash, nop ),
1611 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1612 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1613 ( "KindSignatures", Opt_KindSignatures, nop ),
1614 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1615 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1616 ( "TransformListComp", Opt_TransformListComp, nop ),
1617 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1618 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1619 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1620 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1621 ( "Rank2Types", Opt_Rank2Types, nop ),
1622 ( "RankNTypes", Opt_RankNTypes, nop ),
1623 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1624 ( "TypeOperators", Opt_TypeOperators, nop ),
1625 ( "RecursiveDo", Opt_RecursiveDo,
1626 deprecatedForExtension "DoRec"),
1627 ( "DoRec", Opt_DoRec, nop ),
1628 ( "Arrows", Opt_Arrows, nop ),
1629 ( "ParallelArrays", Opt_ParallelArrays, nop ),
1630 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1631 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1632 ( "Generics", Opt_Generics, nop ),
1633 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1634 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1635 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1636 ( "RecordPuns", Opt_RecordPuns,
1637 deprecatedForExtension "NamedFieldPuns" ),
1638 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1639 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1640 ( "GADTs", Opt_GADTs, nop ),
1641 ( "GADTSyntax", Opt_GADTSyntax, nop ),
1642 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1643 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1644 ( "BangPatterns", Opt_BangPatterns, nop ),
1645 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1646 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1647 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1648 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1649 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1650 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1651 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1652 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1653 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1654 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1655 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1656 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1657 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1658 \ turn_on -> if not turn_on
1659 then deprecate "You can't turn off RelaxedPolyRec any more"
1661 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1662 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1663 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1665 ( "PatternSignatures", Opt_ScopedTypeVariables,
1666 deprecatedForExtension "ScopedTypeVariables" ),
1668 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1669 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1670 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1671 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1672 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1673 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1674 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1675 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1676 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1677 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1678 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1679 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1680 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1681 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1682 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1683 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1684 ( "PackageImports", Opt_PackageImports, nop )
1687 defaultFlags :: [DynFlag]
1689 = [ Opt_AutoLinkPackages,
1690 Opt_ReadUserPackageConf,
1694 #if GHC_DEFAULT_NEW_CODEGEN
1700 Opt_PrintBindContents,
1705 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1706 -- The default -O0 options
1710 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1712 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1713 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1714 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1715 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1716 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1717 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1718 , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
1719 , (Opt_FunctionalDependencies, turnOn, Opt_MultiParamTypeClasses)
1721 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1723 , (Opt_GADTs, turnOn, Opt_GADTSyntax)
1724 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1725 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1727 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1728 -- all over the place
1730 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1732 -- Record wild-cards implies field disambiguation
1733 -- Otherwise if you write (C {..}) you may well get
1734 -- stuff like " 'a' not in scope ", which is a bit silly
1735 -- if the compiler has just filled in field 'a' of constructor 'C'
1736 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1738 , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
1741 optLevelFlags :: [([Int], DynFlag)]
1743 = [ ([0], Opt_IgnoreInterfacePragmas)
1744 , ([0], Opt_OmitInterfacePragmas)
1746 , ([1,2], Opt_IgnoreAsserts)
1747 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1749 , ([1,2], Opt_DoEtaReduction)
1750 , ([1,2], Opt_CaseMerge)
1751 , ([1,2], Opt_Strictness)
1753 , ([1,2], Opt_FullLaziness)
1754 , ([1,2], Opt_Specialise)
1755 , ([1,2], Opt_FloatIn)
1757 , ([2], Opt_LiberateCase)
1758 , ([2], Opt_SpecConstr)
1759 , ([2], Opt_RegsGraph)
1761 -- , ([2], Opt_StaticArgumentTransformation)
1762 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1763 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1764 -- several improvements to the heuristics, and I'm concerned that without
1765 -- those changes SAT will interfere with some attempts to write "high
1766 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1767 -- this year. In particular, the version in HEAD lacks the tail call
1768 -- criterion, so many things that look like reasonable loops will be
1769 -- turned into functions with extra (unneccesary) thunk creation.
1771 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1772 -- This one is important for a tiresome reason:
1773 -- we want to make sure that the bindings for data
1774 -- constructors are eta-expanded. This is probably
1775 -- a good thing anyway, but it seems fragile.
1778 -- -----------------------------------------------------------------------------
1779 -- Standard sets of warning options
1781 standardWarnings :: [DynFlag]
1783 = [ Opt_WarnWarningsDeprecations,
1784 Opt_WarnDeprecatedFlags,
1785 Opt_WarnUnrecognisedPragmas,
1786 Opt_WarnOverlappingPatterns,
1787 Opt_WarnMissingFields,
1788 Opt_WarnMissingMethods,
1789 Opt_WarnDuplicateExports,
1790 Opt_WarnLazyUnliftedBindings,
1791 Opt_WarnDodgyForeignImports,
1792 Opt_WarnWrongDoBind,
1793 Opt_WarnAlternativeLayoutRuleTransitional
1796 minusWOpts :: [DynFlag]
1797 -- Things you get with -W
1799 = standardWarnings ++
1800 [ Opt_WarnUnusedBinds,
1801 Opt_WarnUnusedMatches,
1802 Opt_WarnUnusedImports,
1803 Opt_WarnIncompletePatterns,
1804 Opt_WarnDodgyExports,
1805 Opt_WarnDodgyImports
1808 minusWallOpts :: [DynFlag]
1809 -- Things you get with -Wall
1812 [ Opt_WarnTypeDefaults,
1813 Opt_WarnNameShadowing,
1814 Opt_WarnMissingSigs,
1817 Opt_WarnUnusedDoBind
1820 minuswRemovesOpts :: [DynFlag]
1821 -- minuswRemovesOpts should be every warning option
1825 Opt_WarnIncompletePatternsRecUpd,
1826 Opt_WarnIncompleteUniPatterns,
1827 Opt_WarnMonomorphism,
1828 Opt_WarnUnrecognisedPragmas,
1829 Opt_WarnAutoOrphans,
1830 Opt_WarnImplicitPrelude
1833 enableGlasgowExts :: DynP ()
1834 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1835 mapM_ setExtensionFlag glasgowExtsFlags
1837 disableGlasgowExts :: DynP ()
1838 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1839 mapM_ unSetExtensionFlag glasgowExtsFlags
1841 glasgowExtsFlags :: [ExtensionFlag]
1842 glasgowExtsFlags = [
1843 Opt_ForeignFunctionInterface
1844 , Opt_UnliftedFFITypes
1845 , Opt_ImplicitParams
1846 , Opt_ScopedTypeVariables
1848 , Opt_TypeSynonymInstances
1849 , Opt_StandaloneDeriving
1850 , Opt_DeriveDataTypeable
1852 , Opt_DeriveFoldable
1853 , Opt_DeriveTraversable
1854 , Opt_FlexibleContexts
1855 , Opt_FlexibleInstances
1856 , Opt_ConstrainedClassMethods
1857 , Opt_MultiParamTypeClasses
1858 , Opt_FunctionalDependencies
1860 , Opt_PolymorphicComponents
1861 , Opt_ExistentialQuantification
1863 , Opt_PostfixOperators
1865 , Opt_LiberalTypeSynonyms
1869 , Opt_ParallelListComp
1870 , Opt_EmptyDataDecls
1871 , Opt_KindSignatures
1872 , Opt_GeneralizedNewtypeDeriving ]
1875 -- Consult the RTS to find whether GHC itself has been built profiled
1876 -- If so, you can't use Template Haskell
1877 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1879 rtsIsProfiled :: Bool
1880 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1882 checkTemplateHaskellOk :: Bool -> DynP ()
1883 checkTemplateHaskellOk turn_on
1884 | turn_on && rtsIsProfiled
1885 = addErr "You can't use Template Haskell with a profiled compiler"
1889 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1890 -- so we simply say "ok". It doesn't matter because TH isn't
1891 -- available in stage 1 anyway.
1892 checkTemplateHaskellOk turn_on = return ()
1895 {- **********************************************************************
1897 DynFlags constructors
1899 %********************************************************************* -}
1901 type DynP = EwM (CmdLineP DynFlags)
1903 upd :: (DynFlags -> DynFlags) -> DynP ()
1904 upd f = liftEwM (do { dfs <- getCmdLineState
1905 ; putCmdLineState $! (f dfs) })
1907 --------------- Constructor functions for OptKind -----------------
1908 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1909 noArg fn = NoArg (upd fn)
1911 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1912 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1914 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1915 hasArg fn = HasArg (upd . fn)
1917 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1918 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1919 ; deprecate deprec })
1921 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1922 intSuffix fn = IntSuffix (\n -> upd (fn n))
1924 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1925 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1927 --------------------------
1928 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1929 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1930 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1932 --------------------------
1933 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1934 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1937 deps = [ if turn_on then setExtensionFlag d
1938 else unSetExtensionFlag d
1939 | (f', turn_on, d) <- impliedFlags, f' == f ]
1940 -- When you set f, set the ones it implies
1941 -- NB: use setExtensionFlag recursively, in case the implied flags
1942 -- implies further flags
1944 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1945 -- When you un-set f, however, we don't un-set the things it implies
1946 -- (except for -fno-glasgow-exts, which is treated specially)
1948 --------------------------
1949 alterSettings :: (Settings -> Settings) -> DynFlags -> DynFlags
1950 alterSettings f dflags = dflags { settings = f (settings dflags) }
1952 --------------------------
1953 setDumpFlag' :: DynFlag -> DynP ()
1954 setDumpFlag' dump_flag
1955 = do { setDynFlag dump_flag
1956 ; when want_recomp forceRecompile }
1958 -- Certain dumpy-things are really interested in what's going
1959 -- on during recompilation checking, so in those cases we
1960 -- don't want to turn it off.
1961 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1962 Opt_D_dump_hi_diffs]
1964 forceRecompile :: DynP ()
1965 -- Whenver we -ddump, force recompilation (by switching off the
1966 -- recompilation checker), else you don't see the dump! However,
1967 -- don't switch it off in --make mode, else *everything* gets
1968 -- recompiled which probably isn't what you want
1969 forceRecompile = do { dfs <- liftEwM getCmdLineState
1970 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1972 force_recomp dfs = isOneShot (ghcMode dfs)
1974 setVerboseCore2Core :: DynP ()
1975 setVerboseCore2Core = do forceRecompile
1976 setDynFlag Opt_D_verbose_core2core
1977 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1980 setDumpSimplPhases :: String -> DynP ()
1981 setDumpSimplPhases s = do forceRecompile
1982 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1984 spec = case s of { ('=' : s') -> s'; _ -> s }
1986 setVerbosity :: Maybe Int -> DynP ()
1987 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1989 addCmdlineHCInclude :: String -> DynP ()
1990 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1992 extraPkgConf_ :: FilePath -> DynP ()
1993 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1995 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1997 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1999 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
2001 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
2003 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
2005 setPackageName :: String -> DynFlags -> DynFlags
2006 setPackageName p s = s{ thisPackage = stringToPackageId p }
2008 -- If we're linking a binary, then only targets that produce object
2009 -- code are allowed (requests for other target types are ignored).
2010 setTarget :: HscTarget -> DynP ()
2011 setTarget l = upd set
2014 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
2017 -- Changes the target only if we're compiling object code. This is
2018 -- used by -fasm and -fllvm, which switch from one to the other, but
2019 -- not from bytecode to object-code. The idea is that -fasm/-fllvm
2020 -- can be safely used in an OPTIONS_GHC pragma.
2021 setObjTarget :: HscTarget -> DynP ()
2022 setObjTarget l = upd set
2025 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
2028 setOptLevel :: Int -> DynFlags -> DynFlags
2029 setOptLevel n dflags
2030 | hscTarget dflags == HscInterpreted && n > 0
2032 -- not in IO any more, oh well:
2033 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
2035 = updOptLevel n dflags
2038 -- -Odph is equivalent to
2040 -- -O2 optimise as much as possible
2041 -- -fmax-simplifier-iterations20 this is necessary sometimes
2042 -- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
2044 setDPHOpt :: DynFlags -> DynFlags
2045 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
2049 -- Determines the package used by the vectoriser for the symbols of the vectorised code.
2050 -- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
2051 -- vectoriser cannot be used.
2053 data DPHBackend = DPHPar -- "dph-par"
2054 | DPHSeq -- "dph-seq"
2055 | DPHThis -- the currently compiled package
2056 | DPHNone -- no DPH library available
2057 deriving(Eq, Ord, Enum, Show)
2059 setDPHBackend :: DPHBackend -> DynP ()
2060 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
2062 -- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
2064 dphPackageMaybe :: DynFlags -> Maybe PackageId
2065 dphPackageMaybe dflags
2066 = case dphBackend dflags of
2067 DPHPar -> Just dphParPackageId
2068 DPHSeq -> Just dphSeqPackageId
2069 DPHThis -> Just (thisPackage dflags)
2072 setMainIs :: String -> DynP ()
2074 | not (null main_fn) && isLower (head main_fn)
2075 -- The arg looked like "Foo.Bar.baz"
2076 = upd $ \d -> d{ mainFunIs = Just main_fn,
2077 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2079 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2080 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2082 | otherwise -- The arg looked like "baz"
2083 = upd $ \d -> d{ mainFunIs = Just arg }
2085 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2087 -----------------------------------------------------------------------------
2088 -- Paths & Libraries
2090 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2092 -- -i on its own deletes the import paths
2093 addImportPath "" = upd (\s -> s{importPaths = []})
2094 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2098 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2101 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2103 addFrameworkPath p =
2104 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2106 #ifndef mingw32_TARGET_OS
2107 split_marker :: Char
2108 split_marker = ':' -- not configurable (ToDo)
2111 splitPathList :: String -> [String]
2112 splitPathList s = filter notNull (splitUp s)
2113 -- empty paths are ignored: there might be a trailing
2114 -- ':' in the initial list, for example. Empty paths can
2115 -- cause confusion when they are translated into -I options
2116 -- for passing to gcc.
2118 #ifndef mingw32_TARGET_OS
2119 splitUp xs = split split_marker xs
2121 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2123 -- That is, if "foo:bar:baz" is used, this interpreted as
2124 -- consisting of three entries, 'foo', 'bar', 'baz'.
2125 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2126 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2128 -- Notice that no attempt is made to fully replace the 'standard'
2129 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2130 -- that this will cause too much breakage for users & ':' will
2131 -- work fine even with DOS paths, if you're not insisting on being silly.
2134 splitUp (x:':':div:xs) | div `elem` dir_markers
2135 = ((x:':':div:p): splitUp rs)
2137 (p,rs) = findNextPath xs
2138 -- we used to check for existence of the path here, but that
2139 -- required the IO monad to be threaded through the command-line
2140 -- parser which is quite inconvenient. The
2141 splitUp xs = cons p (splitUp rs)
2143 (p,rs) = findNextPath xs
2148 -- will be called either when we've consumed nought or the
2149 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2150 -- finding the next split marker.
2152 case break (`elem` split_markers) xs of
2153 (p, _:ds) -> (p, ds)
2156 split_markers :: [Char]
2157 split_markers = [':', ';']
2159 dir_markers :: [Char]
2160 dir_markers = ['/', '\\']
2163 -- -----------------------------------------------------------------------------
2164 -- tmpDir, where we store temporary files.
2166 setTmpDir :: FilePath -> DynFlags -> DynFlags
2167 setTmpDir dir = alterSettings (\s -> s { sTmpDir = normalise dir })
2168 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2169 -- seem necessary now --SDM 7/2/2008
2171 -----------------------------------------------------------------------------
2174 setRtsOpts :: String -> DynP ()
2175 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2177 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2178 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2180 -----------------------------------------------------------------------------
2183 setOptHpcDir :: String -> DynP ()
2184 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2186 -----------------------------------------------------------------------------
2187 -- Via-C compilation stuff
2189 -- There are some options that we need to pass to gcc when compiling
2190 -- Haskell code via C, but are only supported by recent versions of
2191 -- gcc. The configure script decides which of these options we need,
2192 -- and puts them in the "settings" file in $topdir. The advantage of
2193 -- having these in a separate file is that the file can be created at
2194 -- install-time depending on the available gcc version, and even
2195 -- re-generated later if gcc is upgraded.
2197 -- The options below are not dependent on the version of gcc, only the
2200 machdepCCOpts :: DynFlags -> [String] -- flags for all C compilations
2201 machdepCCOpts dflags = cCcOpts ++ machdepCCOpts'
2203 machdepCCOpts' :: [String] -- flags for all C compilations
2205 #if alpha_TARGET_ARCH
2207 #ifdef HAVE_THREADED_RTS_SUPPORT
2211 -- For now, to suppress the gcc warning "call-clobbered
2212 -- register used for global register variable", we simply
2213 -- disable all warnings altogether using the -w flag. Oh well.
2215 #elif hppa_TARGET_ARCH
2216 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2217 -- (very nice, but too bad the HP /usr/include files don't agree.)
2218 = ["-D_HPUX_SOURCE"]
2220 #elif i386_TARGET_ARCH
2221 -- -fno-defer-pop : basically the same game as for m68k
2223 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2224 -- the fp (%ebp) for our register maps.
2225 = if opt_Static then ["-DDONT_WANT_WIN32_DLL_SUPPORT"] else []
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 = cSupportsSplitObjs == "YES"
2270 -- -----------------------------------------------------------------------------
2273 compilerInfo :: DynFlags -> [(String, String)]
2275 = -- We always make "Project name" be first to keep parsing in
2276 -- other languages simple, i.e. when looking for other fields,
2277 -- you don't have to worry whether there is a leading '[' or not
2278 ("Project name", cProjectName)
2279 -- Next come the settings, so anything else can be overridden
2280 -- in the settings file (as "lookup" uses the first match for the
2282 : rawSettings dflags
2283 ++ [("Project version", cProjectVersion),
2284 ("Booter version", cBooterVersion),
2286 ("Build platform", cBuildPlatformString),
2287 ("Host platform", cHostPlatformString),
2288 ("Target platform", cTargetPlatformString),
2289 ("Have interpreter", cGhcWithInterpreter),
2290 ("Object splitting supported", cSupportsSplitObjs),
2291 ("Have native code generator", cGhcWithNativeCodeGen),
2292 ("Support SMP", cGhcWithSMP),
2293 ("Unregisterised", cGhcUnregisterised),
2294 ("Tables next to code", cGhcEnableTablesNextToCode),
2295 ("RTS ways", cGhcRTSWays),
2296 ("Leading underscore", cLeadingUnderscore),
2297 ("Debug on", show debugIsOn),
2298 ("LibDir", topDir dflags),
2299 ("Global Package DB", systemPackageConfig dflags),
2300 ("C compiler flags", show cCcOpts),
2301 ("Gcc Linker flags", show cGccLinkerOpts),
2302 ("Ld Linker flags", show cLdLinkerOpts)
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