5 -- (c) The University of Glasgow 2005
8 -- Most flags are dynamic flags, which means they can change from
9 -- compilation to compilation using @OPTIONS_GHC@ pragmas, and in a
10 -- multi-session GHC each session can be using different dynamic
11 -- flags. Dynamic flags can also be set at the prompt in GHCi.
13 -- * Dynamic flags and associated configuration types
25 HscTarget(..), isObjectTarget, defaultObjectTarget,
26 GhcMode(..), isOneShot,
27 GhcLink(..), isNoLink,
31 fFlags, fLangFlags, xFlags,
32 DPHBackend(..), dphPackageMaybe,
36 ghcUsagePath, ghciUsagePath, topDir, tmpDir, rawSettings,
37 extraGccViaCFlags, systemPackageConfig,
38 pgm_L, pgm_P, pgm_F, pgm_c, pgm_s, pgm_a, pgm_l, pgm_dll, pgm_T,
39 pgm_sysman, pgm_windres, pgm_lo, pgm_lc,
40 opt_L, opt_P, opt_F, opt_c, opt_m, opt_a, opt_l,
41 opt_windres, opt_lo, opt_lc,
44 -- ** Manipulating DynFlags
45 defaultDynFlags, -- Settings -> DynFlags
46 initDynFlags, -- DynFlags -> IO DynFlags
48 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
55 -- ** Parsing DynFlags
57 parseDynamicNoPackageFlags,
60 supportedLanguagesAndExtensions,
62 -- ** DynFlag C compiler options
63 machdepCCOpts, picCCOpts,
65 -- * Configuration of the stg-to-stg passes
69 -- * Compiler configuration suitable for display to the user
72 -- Only in stage 2 can we be sure that the RTS
73 -- exposes the appropriate runtime boolean
78 #include "HsVersions.h"
80 #ifndef OMIT_NATIVE_CODEGEN
85 import PrelNames ( mAIN )
87 import {-# SOURCE #-} Packages (PackageState)
88 import DriverPhases ( Phase(..), phaseInputExt )
91 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
94 import Maybes ( orElse )
99 import Foreign.C ( CInt )
101 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
104 import System.IO.Unsafe ( unsafePerformIO )
107 import Control.Monad ( when )
111 import Data.Map (Map)
112 import qualified Data.Map as Map
114 import System.FilePath
115 import System.IO ( stderr, hPutChar )
117 -- -----------------------------------------------------------------------------
120 -- | Enumerates the simple on-or-off dynamic flags
127 | Opt_D_dump_cmmz_pretty
131 | Opt_D_dump_asm_native
132 | Opt_D_dump_asm_liveness
133 | Opt_D_dump_asm_coalesce
134 | Opt_D_dump_asm_regalloc
135 | Opt_D_dump_asm_regalloc_stages
136 | Opt_D_dump_asm_conflicts
137 | Opt_D_dump_asm_stats
138 | Opt_D_dump_asm_expanded
140 | Opt_D_dump_core_stats
146 | Opt_D_dump_inlinings
147 | Opt_D_dump_rule_firings
148 | Opt_D_dump_rule_rewrites
149 | Opt_D_dump_occur_anal
153 | Opt_D_dump_simpl_iterations
154 | Opt_D_dump_simpl_phases
163 | Opt_D_dump_worker_wrapper
164 | Opt_D_dump_rn_trace
165 | Opt_D_dump_rn_stats
167 | Opt_D_dump_simpl_stats
168 | Opt_D_dump_cs_trace -- Constraint solver in type checker
169 | Opt_D_dump_tc_trace
170 | Opt_D_dump_if_trace
171 | Opt_D_dump_vt_trace
178 | Opt_D_verbose_core2core
179 | Opt_D_verbose_stg2stg
181 | Opt_D_dump_hi_diffs
182 | Opt_D_dump_minimal_imports
183 | Opt_D_dump_mod_cycles
184 | Opt_D_dump_view_pattern_commoning
185 | Opt_D_faststring_stats
186 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
187 | Opt_D_no_debug_output
193 | Opt_WarnIsError -- -Werror; makes warnings fatal
194 | Opt_WarnDuplicateExports
196 | Opt_WarnImplicitPrelude
197 | Opt_WarnIncompletePatterns
198 | Opt_WarnIncompleteUniPatterns
199 | Opt_WarnIncompletePatternsRecUpd
200 | Opt_WarnMissingFields
201 | Opt_WarnMissingImportList
202 | Opt_WarnMissingMethods
203 | Opt_WarnMissingSigs
204 | Opt_WarnMissingLocalSigs
205 | Opt_WarnNameShadowing
206 | Opt_WarnOverlappingPatterns
207 | Opt_WarnTypeDefaults
208 | Opt_WarnMonomorphism
209 | Opt_WarnUnusedBinds
210 | Opt_WarnUnusedImports
211 | Opt_WarnUnusedMatches
212 | Opt_WarnWarningsDeprecations
213 | Opt_WarnDeprecatedFlags
214 | Opt_WarnDodgyExports
215 | Opt_WarnDodgyImports
217 | Opt_WarnAutoOrphans
220 | Opt_WarnUnrecognisedPragmas
221 | Opt_WarnDodgyForeignImports
222 | Opt_WarnLazyUnliftedBindings
223 | Opt_WarnUnusedDoBind
224 | Opt_WarnWrongDoBind
225 | Opt_WarnAlternativeLayoutRuleTransitional
227 | Opt_PrintExplicitForalls
234 | Opt_StaticArgumentTransformation
238 | Opt_DoLambdaEtaExpansion
242 | Opt_UnboxStrictFields
243 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
245 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
247 | Opt_RegsGraph -- do graph coloring register allocation
248 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
251 | Opt_IgnoreInterfacePragmas
252 | Opt_OmitInterfacePragmas
253 | Opt_ExposeAllUnfoldings
256 | Opt_AutoSccsOnAllToplevs
257 | Opt_AutoSccsOnExportedToplevs
258 | Opt_AutoSccsOnIndividualCafs
264 | Opt_ExcessPrecision
265 | Opt_EagerBlackHoling
266 | Opt_ReadUserPackageConf
270 | Opt_HideAllPackages
271 | Opt_PrintBindResult
275 | Opt_BreakOnException
277 | Opt_PrintEvldWithShow
278 | Opt_PrintBindContents
281 | Opt_EmitExternalCore
283 | Opt_BuildingCabalPackage
291 | Opt_ConvertToZipCfgAndBack
292 | Opt_AutoLinkPackages
293 | Opt_ImplicitImportQualified
301 | Opt_KeepRawTokenStream
306 data Language = Haskell98 | Haskell2010
310 | Opt_OverlappingInstances
311 | Opt_UndecidableInstances
312 | Opt_IncoherentInstances
313 | Opt_MonomorphismRestriction
316 | Opt_RelaxedPolyRec -- Deprecated
317 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
318 | Opt_ForeignFunctionInterface
319 | Opt_UnliftedFFITypes
320 | Opt_GHCForeignImportPrim
321 | Opt_ParallelArrays -- Syntactic support for parallel arrays
322 | Opt_Arrows -- Arrow-notation syntax
323 | Opt_TemplateHaskell
326 | Opt_Generics -- "Derivable type classes"
327 | Opt_ImplicitPrelude
328 | Opt_ScopedTypeVariables
332 | Opt_OverloadedStrings
333 | Opt_DisambiguateRecordFields
334 | Opt_RecordWildCards
340 | Opt_DoAndIfThenElse
341 | Opt_RebindableSyntax
343 | Opt_StandaloneDeriving
344 | Opt_DeriveDataTypeable
346 | Opt_DeriveTraversable
349 | Opt_TypeSynonymInstances
350 | Opt_FlexibleContexts
351 | Opt_FlexibleInstances
352 | Opt_ConstrainedClassMethods
353 | Opt_MultiParamTypeClasses
354 | Opt_FunctionalDependencies
356 | Opt_PolymorphicComponents
357 | Opt_ExistentialQuantification
361 | Opt_ParallelListComp
362 | Opt_TransformListComp
363 | Opt_GeneralizedNewtypeDeriving
366 | Opt_PostfixOperators
369 | Opt_LiberalTypeSynonyms
372 | Opt_ImpredicativeTypes
376 | Opt_AlternativeLayoutRule
377 | Opt_AlternativeLayoutRuleTransitional
378 | Opt_DatatypeContexts
379 | Opt_NondecreasingIndentation
383 -- | Contains not only a collection of 'DynFlag's but also a plethora of
384 -- information relating to the compilation of a single file or GHC session
385 data DynFlags = DynFlags {
388 hscTarget :: HscTarget,
389 hscOutName :: String, -- ^ Name of the output file
390 extCoreName :: String, -- ^ Name of the .hcr output file
391 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
392 optLevel :: Int, -- ^ Optimisation level
393 simplPhases :: Int, -- ^ Number of simplifier phases
394 maxSimplIterations :: Int, -- ^ Max simplifier iterations
395 shouldDumpSimplPhase :: Maybe String,
396 ruleCheck :: Maybe String,
397 strictnessBefore :: [Int], -- ^ Additional demand analysis
399 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
400 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
401 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
402 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
403 -- See CoreMonad.FloatOutSwitches
405 #ifndef OMIT_NATIVE_CODEGEN
406 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
408 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
409 importPaths :: [FilePath],
411 mainFunIs :: Maybe String,
412 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
414 dphBackend :: DPHBackend,
416 thisPackage :: PackageId, -- ^ name of package currently being compiled
419 ways :: [Way], -- ^ Way flags from the command line
420 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
421 rtsBuildTag :: String, -- ^ The RTS \"way\"
423 -- For object splitting
424 splitInfo :: Maybe (String,Int),
427 objectDir :: Maybe String,
428 dylibInstallName :: Maybe String,
429 hiDir :: Maybe String,
430 stubDir :: Maybe String,
436 outputFile :: Maybe String,
437 outputHi :: Maybe String,
438 dynLibLoader :: DynLibLoader,
440 -- | This is set by 'DriverPipeline.runPipeline' based on where
441 -- its output is going.
442 dumpPrefix :: Maybe FilePath,
444 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
445 -- Set by @-ddump-file-prefix@
446 dumpPrefixForce :: Maybe FilePath,
448 includePaths :: [String],
449 libraryPaths :: [String],
450 frameworkPaths :: [String], -- used on darwin only
451 cmdlineFrameworks :: [String], -- ditto
453 rtsOpts :: Maybe String,
454 rtsOptsEnabled :: RtsOptsEnabled,
456 hpcDir :: String, -- ^ Path to store the .mix files
458 settings :: Settings,
461 depMakefile :: FilePath,
462 depIncludePkgDeps :: Bool,
463 depExcludeMods :: [ModuleName],
464 depSuffixes :: [String],
467 extraPkgConfs :: [FilePath],
468 -- ^ The @-package-conf@ flags given on the command line, in the order
471 packageFlags :: [PackageFlag],
472 -- ^ The @-package@ and @-hide-package@ flags from the command-line
475 -- NB. do not modify this field, it is calculated by
476 -- Packages.initPackages and Packages.updatePackages.
477 pkgDatabase :: Maybe [PackageConfig],
478 pkgState :: PackageState,
481 -- These have to be IORefs, because the defaultCleanupHandler needs to
482 -- know what to clean when an exception happens
483 filesToClean :: IORef [FilePath],
484 dirsToClean :: IORef (Map FilePath FilePath),
488 -- Don't change this without updating extensionFlags:
489 language :: Maybe Language,
490 -- Don't change this without updating extensionFlags:
491 extensions :: [OnOff ExtensionFlag],
492 -- extensionFlags should always be equal to
493 -- flattenExtensionFlags language extensions
494 extensionFlags :: [ExtensionFlag],
496 -- | Message output action: use "ErrUtils" instead of this if you can
497 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
499 haddockOptions :: Maybe String
502 data Settings = Settings {
503 sGhcUsagePath :: FilePath, -- Filled in by SysTools
504 sGhciUsagePath :: FilePath, -- ditto
506 sTmpDir :: String, -- no trailing '/'
507 -- You shouldn't need to look things up in rawSettings directly.
508 -- They should have their own fields instead.
509 sRawSettings :: [(String, String)],
510 sExtraGccViaCFlags :: [String],
511 sSystemPackageConfig :: FilePath,
512 -- commands for particular phases
514 sPgm_P :: (String,[Option]),
516 sPgm_c :: (String,[Option]),
517 sPgm_s :: (String,[Option]),
518 sPgm_a :: (String,[Option]),
519 sPgm_l :: (String,[Option]),
520 sPgm_dll :: (String,[Option]),
522 sPgm_sysman :: String,
523 sPgm_windres :: String,
524 sPgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
525 sPgm_lc :: (String,[Option]), -- LLVM: llc static compiler
526 -- options for particular phases
534 sOpt_windres :: [String],
535 sOpt_lo :: [String], -- LLVM: llvm optimiser
536 sOpt_lc :: [String] -- LLVM: llc static compiler
540 ghcUsagePath :: DynFlags -> FilePath
541 ghcUsagePath dflags = sGhcUsagePath (settings dflags)
542 ghciUsagePath :: DynFlags -> FilePath
543 ghciUsagePath dflags = sGhciUsagePath (settings dflags)
544 topDir :: DynFlags -> FilePath
545 topDir dflags = sTopDir (settings dflags)
546 tmpDir :: DynFlags -> String
547 tmpDir dflags = sTmpDir (settings dflags)
548 rawSettings :: DynFlags -> [(String, String)]
549 rawSettings dflags = sRawSettings (settings dflags)
550 extraGccViaCFlags :: DynFlags -> [String]
551 extraGccViaCFlags dflags = sExtraGccViaCFlags (settings dflags)
552 systemPackageConfig :: DynFlags -> FilePath
553 systemPackageConfig dflags = sSystemPackageConfig (settings dflags)
554 pgm_L :: DynFlags -> String
555 pgm_L dflags = sPgm_L (settings dflags)
556 pgm_P :: DynFlags -> (String,[Option])
557 pgm_P dflags = sPgm_P (settings dflags)
558 pgm_F :: DynFlags -> String
559 pgm_F dflags = sPgm_F (settings dflags)
560 pgm_c :: DynFlags -> (String,[Option])
561 pgm_c dflags = sPgm_c (settings dflags)
562 pgm_s :: DynFlags -> (String,[Option])
563 pgm_s dflags = sPgm_s (settings dflags)
564 pgm_a :: DynFlags -> (String,[Option])
565 pgm_a dflags = sPgm_a (settings dflags)
566 pgm_l :: DynFlags -> (String,[Option])
567 pgm_l dflags = sPgm_l (settings dflags)
568 pgm_dll :: DynFlags -> (String,[Option])
569 pgm_dll dflags = sPgm_dll (settings dflags)
570 pgm_T :: DynFlags -> String
571 pgm_T dflags = sPgm_T (settings dflags)
572 pgm_sysman :: DynFlags -> String
573 pgm_sysman dflags = sPgm_sysman (settings dflags)
574 pgm_windres :: DynFlags -> String
575 pgm_windres dflags = sPgm_windres (settings dflags)
576 pgm_lo :: DynFlags -> (String,[Option])
577 pgm_lo dflags = sPgm_lo (settings dflags)
578 pgm_lc :: DynFlags -> (String,[Option])
579 pgm_lc dflags = sPgm_lc (settings dflags)
580 opt_L :: DynFlags -> [String]
581 opt_L dflags = sOpt_L (settings dflags)
582 opt_P :: DynFlags -> [String]
583 opt_P dflags = sOpt_P (settings dflags)
584 opt_F :: DynFlags -> [String]
585 opt_F dflags = sOpt_F (settings dflags)
586 opt_c :: DynFlags -> [String]
587 opt_c dflags = sOpt_c (settings dflags)
588 opt_m :: DynFlags -> [String]
589 opt_m dflags = sOpt_m (settings dflags)
590 opt_a :: DynFlags -> [String]
591 opt_a dflags = sOpt_a (settings dflags)
592 opt_l :: DynFlags -> [String]
593 opt_l dflags = sOpt_l (settings dflags)
594 opt_windres :: DynFlags -> [String]
595 opt_windres dflags = sOpt_windres (settings dflags)
596 opt_lo :: DynFlags -> [String]
597 opt_lo dflags = sOpt_lo (settings dflags)
598 opt_lc :: DynFlags -> [String]
599 opt_lc dflags = sOpt_lc (settings dflags)
601 wayNames :: DynFlags -> [WayName]
602 wayNames = map wayName . ways
604 -- | The target code type of the compilation (if any).
606 -- Whenever you change the target, also make sure to set 'ghcLink' to
607 -- something sensible.
609 -- 'HscNothing' can be used to avoid generating any output, however, note
612 -- * This will not run the desugaring step, thus no warnings generated in
613 -- this step will be output. In particular, this includes warnings related
614 -- to pattern matching. You can run the desugarer manually using
615 -- 'GHC.desugarModule'.
617 -- * If a program uses Template Haskell the typechecker may try to run code
618 -- from an imported module. This will fail if no code has been generated
619 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
620 -- whether this might be the case and choose to either switch to a
621 -- different target or avoid typechecking such modules. (The latter may
622 -- preferable for security reasons.)
625 = HscC -- ^ Generate C code.
626 | HscAsm -- ^ Generate assembly using the native code generator.
627 | HscLlvm -- ^ Generate assembly using the llvm code generator.
628 | HscJava -- ^ Generate Java bytecode.
629 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
630 | HscNothing -- ^ Don't generate any code. See notes above.
633 -- | Will this target result in an object file on the disk?
634 isObjectTarget :: HscTarget -> Bool
635 isObjectTarget HscC = True
636 isObjectTarget HscAsm = True
637 isObjectTarget HscLlvm = True
638 isObjectTarget _ = False
640 -- | The 'GhcMode' tells us whether we're doing multi-module
641 -- compilation (controlled via the "GHC" API) or one-shot
642 -- (single-module) compilation. This makes a difference primarily to
643 -- the "Finder": in one-shot mode we look for interface files for
644 -- imported modules, but in multi-module mode we look for source files
645 -- in order to check whether they need to be recompiled.
647 = CompManager -- ^ @\-\-make@, GHCi, etc.
648 | OneShot -- ^ @ghc -c Foo.hs@
649 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
652 instance Outputable GhcMode where
653 ppr CompManager = ptext (sLit "CompManager")
654 ppr OneShot = ptext (sLit "OneShot")
655 ppr MkDepend = ptext (sLit "MkDepend")
657 isOneShot :: GhcMode -> Bool
658 isOneShot OneShot = True
659 isOneShot _other = False
661 -- | What to do in the link step, if there is one.
663 = NoLink -- ^ Don't link at all
664 | LinkBinary -- ^ Link object code into a binary
665 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
666 -- bytecode and object code).
667 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
670 isNoLink :: GhcLink -> Bool
671 isNoLink NoLink = True
674 -- Is it worth evaluating this Bool and caching it in the DynFlags value
675 -- during initDynFlags?
676 doingTickyProfiling :: DynFlags -> Bool
677 doingTickyProfiling _ = opt_Ticky
678 -- XXX -ticky is a static flag, because it implies -debug which is also
679 -- static. If the way flags were made dynamic, we could fix this.
682 = ExposePackage String
683 | ExposePackageId String
685 | IgnorePackage String
688 defaultHscTarget :: HscTarget
689 defaultHscTarget = defaultObjectTarget
691 -- | The 'HscTarget' value corresponding to the default way to create
692 -- object files on the current platform.
693 defaultObjectTarget :: HscTarget
695 | cGhcWithNativeCodeGen == "YES" = HscAsm
703 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
706 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
707 initDynFlags :: DynFlags -> IO DynFlags
708 initDynFlags dflags = do
709 -- someday these will be dynamic flags
710 ways <- readIORef v_Ways
711 refFilesToClean <- newIORef []
712 refDirsToClean <- newIORef Map.empty
715 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
716 rtsBuildTag = mkBuildTag ways,
717 filesToClean = refFilesToClean,
718 dirsToClean = refDirsToClean
721 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
722 -- and must be fully initialized by 'GHC.newSession' first.
723 defaultDynFlags :: Settings -> DynFlags
724 defaultDynFlags mySettings =
726 ghcMode = CompManager,
727 ghcLink = LinkBinary,
728 hscTarget = defaultHscTarget,
734 maxSimplIterations = 4,
735 shouldDumpSimplPhase = Nothing,
737 specConstrThreshold = Just 200,
738 specConstrCount = Just 3,
739 liberateCaseThreshold = Just 200,
740 floatLamArgs = Just 0, -- Default: float only if no fvs
741 strictnessBefore = [],
743 #ifndef OMIT_NATIVE_CODEGEN
744 targetPlatform = defaultTargetPlatform,
746 cmdlineHcIncludes = [],
750 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
752 dphBackend = DPHNone,
754 thisPackage = mainPackageId,
757 dylibInstallName = Nothing,
761 objectSuf = phaseInputExt StopLn,
762 hcSuf = phaseInputExt HCc,
765 outputFile = Nothing,
767 dynLibLoader = SystemDependent,
768 dumpPrefix = Nothing,
769 dumpPrefixForce = Nothing,
773 cmdlineFrameworks = [],
775 rtsOptsEnabled = RtsOptsSafeOnly,
781 pkgDatabase = Nothing,
782 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
783 ways = panic "defaultDynFlags: No ways",
784 buildTag = panic "defaultDynFlags: No buildTag",
785 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
787 settings = mySettings,
789 depMakefile = "Makefile",
790 depIncludePkgDeps = False,
793 -- end of ghc -M values
794 filesToClean = panic "defaultDynFlags: No filesToClean",
795 dirsToClean = panic "defaultDynFlags: No dirsToClean",
796 haddockOptions = Nothing,
797 flags = defaultFlags,
800 extensionFlags = flattenExtensionFlags Nothing [],
802 log_action = \severity srcSpan style msg ->
804 SevOutput -> printOutput (msg style)
805 SevInfo -> printErrs (msg style)
806 SevFatal -> printErrs (msg style)
809 printErrs ((mkLocMessage srcSpan msg) style)
810 -- careful (#2302): printErrs prints in UTF-8, whereas
811 -- converting to string first and using hPutStr would
812 -- just emit the low 8 bits of each unicode char.
816 Note [Verbosity levels]
817 ~~~~~~~~~~~~~~~~~~~~~~~
818 0 | print errors & warnings only
819 1 | minimal verbosity: print "compiling M ... done." for each module.
820 2 | equivalent to -dshow-passes
821 3 | equivalent to existing "ghc -v"
822 4 | "ghc -v -ddump-most"
823 5 | "ghc -v -ddump-all"
829 -- OnOffs accumulate in reverse order, so we use foldr in order to
830 -- process them in the right order
831 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
833 flattenExtensionFlags ml = foldr f defaultExtensionFlags
834 where f (On f) flags = f : delete f flags
835 f (Off f) flags = delete f flags
836 defaultExtensionFlags = languageExtensions ml
838 languageExtensions :: Maybe Language -> [ExtensionFlag]
840 languageExtensions Nothing
841 -- Nothing => the default case
842 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
843 -- behaviour the default, to see if anyone notices
845 -- In due course I'd like Opt_MonoLocalBinds to be on by default
846 -- But NB it's implied by GADTs etc
847 -- SLPJ September 2010
848 : Opt_NondecreasingIndentation -- This has been on by default for some time
849 : languageExtensions (Just Haskell2010)
851 languageExtensions (Just Haskell98)
852 = [Opt_ImplicitPrelude,
853 Opt_MonomorphismRestriction,
855 Opt_DatatypeContexts,
856 Opt_NondecreasingIndentation
857 -- strictly speaking non-standard, but we always had this
858 -- on implicitly before the option was added in 7.1, and
859 -- turning it off breaks code, so we're keeping it on for
860 -- backwards compatibility. Cabal uses -XHaskell98 by
861 -- default unless you specify another language.
864 languageExtensions (Just Haskell2010)
865 = [Opt_ImplicitPrelude,
866 Opt_MonomorphismRestriction,
867 Opt_DatatypeContexts,
869 Opt_ForeignFunctionInterface,
874 -- | Test whether a 'DynFlag' is set
875 dopt :: DynFlag -> DynFlags -> Bool
876 dopt f dflags = f `elem` (flags dflags)
879 dopt_set :: DynFlags -> DynFlag -> DynFlags
880 dopt_set dfs f = dfs{ flags = f : flags dfs }
882 -- | Unset a 'DynFlag'
883 dopt_unset :: DynFlags -> DynFlag -> DynFlags
884 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
886 -- | Test whether a 'ExtensionFlag' is set
887 xopt :: ExtensionFlag -> DynFlags -> Bool
888 xopt f dflags = f `elem` extensionFlags dflags
890 -- | Set a 'ExtensionFlag'
891 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
893 = let onoffs = On f : extensions dfs
894 in dfs { extensions = onoffs,
895 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
897 -- | Unset a 'ExtensionFlag'
898 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
900 = let onoffs = Off f : extensions dfs
901 in dfs { extensions = onoffs,
902 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
904 setLanguage :: Language -> DynP ()
905 setLanguage l = upd f
906 where f dfs = let mLang = Just l
907 oneoffs = extensions dfs
910 extensionFlags = flattenExtensionFlags mLang oneoffs
913 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
914 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
915 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
916 -> [a] -- ^ Correctly ordered extracted options
917 getOpts dflags opts = reverse (opts dflags)
918 -- We add to the options from the front, so we need to reverse the list
920 -- | Gets the verbosity flag for the current verbosity level. This is fed to
921 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
922 getVerbFlags :: DynFlags -> [String]
924 | verbosity dflags >= 4 = ["-v"]
927 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
928 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
929 setPgmP, addOptl, addOptP,
930 addCmdlineFramework, addHaddockOpts
931 :: String -> DynFlags -> DynFlags
932 setOutputFile, setOutputHi, setDumpPrefixForce
933 :: Maybe String -> DynFlags -> DynFlags
935 setObjectDir f d = d{ objectDir = Just f}
936 setHiDir f d = d{ hiDir = Just f}
937 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
938 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
939 -- \#included from the .hc file when compiling via C (i.e. unregisterised
941 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
942 setDylibInstallName f d = d{ dylibInstallName = Just f}
944 setObjectSuf f d = d{ objectSuf = f}
945 setHiSuf f d = d{ hiSuf = f}
946 setHcSuf f d = d{ hcSuf = f}
948 setOutputFile f d = d{ outputFile = f}
949 setOutputHi f d = d{ outputHi = f}
951 parseDynLibLoaderMode f d =
953 ("deploy", "") -> d{ dynLibLoader = Deployable }
954 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
955 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
957 setDumpPrefixForce f d = d { dumpPrefixForce = f}
959 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
960 -- Config.hs should really use Option.
961 setPgmP f = let (pgm:args) = words f in alterSettings (\s -> s { sPgm_P = (pgm, map Option args)})
962 addOptl f = alterSettings (\s -> s { sOpt_l = f : sOpt_l s})
963 addOptP f = alterSettings (\s -> s { sOpt_P = f : sOpt_P s})
966 setDepMakefile :: FilePath -> DynFlags -> DynFlags
967 setDepMakefile f d = d { depMakefile = deOptDep f }
969 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
970 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
972 addDepExcludeMod :: String -> DynFlags -> DynFlags
974 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
976 addDepSuffix :: FilePath -> DynFlags -> DynFlags
977 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
980 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
981 -- we need to strip the "-optdep" off of the arg
982 deOptDep :: String -> String
983 deOptDep x = case stripPrefix "-optdep" x of
987 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
989 addHaddockOpts f d = d{ haddockOptions = Just f}
991 -- -----------------------------------------------------------------------------
992 -- Command-line options
994 -- | When invoking external tools as part of the compilation pipeline, we
995 -- pass these a sequence of options on the command-line. Rather than
996 -- just using a list of Strings, we use a type that allows us to distinguish
997 -- between filepaths and 'other stuff'. The reason for this is that
998 -- this type gives us a handle on transforming filenames, and filenames only,
999 -- to whatever format they're expected to be on a particular platform.
1001 = FileOption -- an entry that _contains_ filename(s) / filepaths.
1002 String -- a non-filepath prefix that shouldn't be
1003 -- transformed (e.g., "/out=")
1004 String -- the filepath/filename portion
1007 showOpt :: Option -> String
1008 showOpt (FileOption pre f) = pre ++ f
1009 showOpt (Option s) = s
1011 -----------------------------------------------------------------------------
1012 -- Setting the optimisation level
1014 updOptLevel :: Int -> DynFlags -> DynFlags
1015 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
1017 = dfs2{ optLevel = final_n }
1019 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
1020 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
1021 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
1023 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
1024 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
1026 -- -----------------------------------------------------------------------------
1027 -- StgToDo: abstraction of stg-to-stg passes to run.
1030 = StgDoMassageForProfiling -- should be (next to) last
1031 -- There's also setStgVarInfo, but its absolute "lastness"
1032 -- is so critical that it is hardwired in (no flag).
1035 getStgToDo :: DynFlags -> [StgToDo]
1039 stg_stats = dopt Opt_StgStats dflags
1041 todo1 = if stg_stats then [D_stg_stats] else []
1043 todo2 | WayProf `elem` wayNames dflags
1044 = StgDoMassageForProfiling : todo1
1048 {- **********************************************************************
1052 %********************************************************************* -}
1054 -- -----------------------------------------------------------------------------
1055 -- Parsing the dynamic flags.
1057 -- | Parse dynamic flags from a list of command line arguments. Returns the
1058 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1059 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1060 -- flags or missing arguments).
1061 parseDynamicFlags :: Monad m =>
1062 DynFlags -> [Located String]
1063 -> m (DynFlags, [Located String], [Located String])
1064 -- ^ Updated 'DynFlags', left-over arguments, and
1065 -- list of warnings.
1066 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1068 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1069 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1070 parseDynamicNoPackageFlags :: Monad m =>
1071 DynFlags -> [Located String]
1072 -> m (DynFlags, [Located String], [Located String])
1073 -- ^ Updated 'DynFlags', left-over arguments, and
1074 -- list of warnings.
1075 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1077 parseDynamicFlags_ :: Monad m =>
1078 DynFlags -> [Located String] -> Bool
1079 -> m (DynFlags, [Located String], [Located String])
1080 parseDynamicFlags_ dflags0 args pkg_flags = do
1081 -- XXX Legacy support code
1082 -- We used to accept things like
1083 -- optdep-f -optdepdepend
1084 -- optdep-f -optdep depend
1085 -- optdep -f -optdepdepend
1086 -- optdep -f -optdep depend
1087 -- but the spaces trip up proper argument handling. So get rid of them.
1088 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1089 f (x : xs) = x : f xs
1093 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1094 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1095 | otherwise = dynamic_flags
1097 let ((leftover, errs, warns), dflags1)
1098 = runCmdLine (processArgs flag_spec args') dflags0
1099 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1101 let (pic_warns, dflags2)
1102 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1103 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1104 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1105 ++ "dynamic on this platform;\n ignoring -fllvm"],
1106 dflags1{ hscTarget = HscAsm })
1108 | otherwise = ([], dflags1)
1110 return (dflags2, leftover, pic_warns ++ warns)
1113 {- **********************************************************************
1115 DynFlags specifications
1117 %********************************************************************* -}
1119 allFlags :: [String]
1120 allFlags = map ('-':) $
1121 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1122 map ("fno-"++) flags ++
1123 map ("f"++) flags ++
1124 map ("f"++) flags' ++
1125 map ("X"++) supportedExtensions
1126 where ok (PrefixPred _ _) = False
1128 flags = [ name | (name, _, _) <- fFlags ]
1129 flags' = [ name | (name, _, _) <- fLangFlags ]
1131 --------------- The main flags themselves ------------------
1132 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1134 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1135 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1136 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1138 (HasArg (\s -> do { addCmdlineHCInclude s
1139 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1140 , Flag "v" (OptIntSuffix setVerbosity)
1142 ------- Specific phases --------------------------------------------
1143 -- need to appear before -pgmL to be parsed as LLVM flags.
1144 , Flag "pgmlo" (hasArg (\f -> alterSettings (\s -> s { sPgm_lo = (f,[])})))
1145 , Flag "pgmlc" (hasArg (\f -> alterSettings (\s -> s { sPgm_lc = (f,[])})))
1146 , Flag "pgmL" (hasArg (\f -> alterSettings (\s -> s { sPgm_L = f})))
1147 , Flag "pgmP" (hasArg setPgmP)
1148 , Flag "pgmF" (hasArg (\f -> alterSettings (\s -> s { sPgm_F = f})))
1149 , Flag "pgmc" (hasArg (\f -> alterSettings (\s -> s { sPgm_c = (f,[])})))
1150 , Flag "pgmm" (HasArg (\_ -> addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1151 , Flag "pgms" (hasArg (\f -> alterSettings (\s -> s { sPgm_s = (f,[])})))
1152 , Flag "pgma" (hasArg (\f -> alterSettings (\s -> s { sPgm_a = (f,[])})))
1153 , Flag "pgml" (hasArg (\f -> alterSettings (\s -> s { sPgm_l = (f,[])})))
1154 , Flag "pgmdll" (hasArg (\f -> alterSettings (\s -> s { sPgm_dll = (f,[])})))
1155 , Flag "pgmwindres" (hasArg (\f -> alterSettings (\s -> s { sPgm_windres = f})))
1157 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1158 , Flag "optlo" (hasArg (\f -> alterSettings (\s -> s { sOpt_lo = f : sOpt_lo s})))
1159 , Flag "optlc" (hasArg (\f -> alterSettings (\s -> s { sOpt_lc = f : sOpt_lc s})))
1160 , Flag "optL" (hasArg (\f -> alterSettings (\s -> s { sOpt_L = f : sOpt_L s})))
1161 , Flag "optP" (hasArg addOptP)
1162 , Flag "optF" (hasArg (\f -> alterSettings (\s -> s { sOpt_F = f : sOpt_F s})))
1163 , Flag "optc" (hasArg (\f -> alterSettings (\s -> s { sOpt_c = f : sOpt_c s})))
1164 , Flag "optm" (hasArg (\f -> alterSettings (\s -> s { sOpt_m = f : sOpt_m s})))
1165 , Flag "opta" (hasArg (\f -> alterSettings (\s -> s { sOpt_a = f : sOpt_a s})))
1166 , Flag "optl" (hasArg addOptl)
1167 , Flag "optwindres" (hasArg (\f -> alterSettings (\s -> s { sOpt_windres = f : sOpt_windres s})))
1170 (NoArg (if can_split
1171 then setDynFlag Opt_SplitObjs
1172 else addWarn "ignoring -fsplit-objs"))
1174 -------- ghc -M -----------------------------------------------------
1175 , Flag "dep-suffix" (hasArg addDepSuffix)
1176 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1177 , Flag "dep-makefile" (hasArg setDepMakefile)
1178 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1179 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1180 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1181 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1182 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1183 , Flag "exclude-module" (hasArg addDepExcludeMod)
1184 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1185 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1187 -------- Linking ----------------------------------------------------
1188 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1189 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1190 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1191 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1193 ------- Libraries ---------------------------------------------------
1194 , Flag "L" (Prefix addLibraryPath)
1195 , Flag "l" (AnySuffix (upd . addOptl))
1197 ------- Frameworks --------------------------------------------------
1198 -- -framework-path should really be -F ...
1199 , Flag "framework-path" (HasArg addFrameworkPath)
1200 , Flag "framework" (hasArg addCmdlineFramework)
1202 ------- Output Redirection ------------------------------------------
1203 , Flag "odir" (hasArg setObjectDir)
1204 , Flag "o" (SepArg (upd . setOutputFile . Just))
1205 , Flag "ohi" (hasArg (setOutputHi . Just ))
1206 , Flag "osuf" (hasArg setObjectSuf)
1207 , Flag "hcsuf" (hasArg setHcSuf)
1208 , Flag "hisuf" (hasArg setHiSuf)
1209 , Flag "hidir" (hasArg setHiDir)
1210 , Flag "tmpdir" (hasArg setTmpDir)
1211 , Flag "stubdir" (hasArg setStubDir)
1212 , Flag "outputdir" (hasArg setOutputDir)
1213 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1215 ------- Keeping temporary files -------------------------------------
1216 -- These can be singular (think ghc -c) or plural (think ghc --make)
1217 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1218 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1219 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1220 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1221 , Flag "keep-raw-s-file" (NoArg (addWarn "The -keep-raw-s-file flag does nothing; it will be removed in a future GHC release"))
1222 , Flag "keep-raw-s-files" (NoArg (addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1223 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1224 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1225 -- This only makes sense as plural
1226 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1228 ------- Miscellaneous ----------------------------------------------
1229 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1230 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1231 , Flag "with-rtsopts" (HasArg setRtsOpts)
1232 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1233 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1234 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1235 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1236 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1237 , Flag "main-is" (SepArg setMainIs)
1238 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1239 , Flag "haddock-opts" (hasArg addHaddockOpts)
1240 , Flag "hpcdir" (SepArg setOptHpcDir)
1242 ------- recompilation checker --------------------------------------
1243 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1244 ; deprecate "Use -fno-force-recomp instead" }))
1245 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1246 ; deprecate "Use -fforce-recomp instead" }))
1248 ------ HsCpp opts ---------------------------------------------------
1249 , Flag "D" (AnySuffix (upd . addOptP))
1250 , Flag "U" (AnySuffix (upd . addOptP))
1252 ------- Include/Import Paths ----------------------------------------
1253 , Flag "I" (Prefix addIncludePath)
1254 , Flag "i" (OptPrefix addImportPath)
1256 ------ Debugging ----------------------------------------------------
1257 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1259 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1260 , Flag "ddump-raw-cmm" (setDumpFlag Opt_D_dump_raw_cmm)
1261 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1262 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1263 , Flag "ddump-core-stats" (setDumpFlag Opt_D_dump_core_stats)
1264 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1265 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1266 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1267 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1268 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1269 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1270 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1271 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1272 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1273 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1274 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1275 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1276 ; setDumpFlag' Opt_D_dump_llvm}))
1277 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1278 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1279 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1280 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1281 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1282 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1283 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1284 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1285 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1286 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1287 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1288 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1289 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1290 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1291 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1292 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1293 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1294 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1295 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1296 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1297 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1298 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1299 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1300 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1301 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1302 , Flag "ddump-cs-trace" (setDumpFlag Opt_D_dump_cs_trace)
1303 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1304 , Flag "ddump-vt-trace" (setDumpFlag Opt_D_dump_vt_trace)
1305 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1306 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1307 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1308 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1309 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1310 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1311 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1312 ; setVerboseCore2Core }))
1313 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1314 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1315 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1316 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1317 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1318 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1319 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1320 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1321 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1322 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1323 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1324 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1325 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1326 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1327 , Flag "dshow-passes" (NoArg (do forceRecompile
1328 setVerbosity (Just 2)))
1329 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1331 ------ Machine dependant (-m<blah>) stuff ---------------------------
1333 , Flag "monly-2-regs" (NoArg (addWarn "The -monly-2-regs flag does nothing; it will be removed in a future GHC release"))
1334 , Flag "monly-3-regs" (NoArg (addWarn "The -monly-3-regs flag does nothing; it will be removed in a future GHC release"))
1335 , Flag "monly-4-regs" (NoArg (addWarn "The -monly-4-regs flag does nothing; it will be removed in a future GHC release"))
1336 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1338 ------ Warning opts -------------------------------------------------
1339 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1340 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1341 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1342 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1343 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1344 ; deprecate "Use -w instead" }))
1345 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1347 ------ Optimisation flags ------------------------------------------
1348 , Flag "O" (noArg (setOptLevel 1))
1349 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1350 , Flag "Odph" (noArg setDPHOpt)
1351 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1352 -- If the number is missing, use 1
1354 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1355 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1356 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1357 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1358 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1359 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1360 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1361 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1362 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1363 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1364 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1365 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1366 , Flag "ffloat-all-lams" (noArg (\d -> d{ floatLamArgs = Nothing }))
1368 ------ Profiling ----------------------------------------------------
1370 -- XXX Should the -f* flags be deprecated?
1371 -- They don't seem to be documented
1372 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1373 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1374 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1375 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1376 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1377 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1378 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1379 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1380 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1382 ------ DPH flags ----------------------------------------------------
1384 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1385 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1386 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1387 , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
1389 ------ Compiler flags -----------------------------------------------
1391 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1392 , Flag "fvia-c" (NoArg
1393 (addWarn "The -fvia-c flag does nothing; it will be removed in a future GHC release"))
1394 , Flag "fvia-C" (NoArg
1395 (addWarn "The -fvia-C flag does nothing; it will be removed in a future GHC release"))
1396 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1398 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1399 setTarget HscNothing))
1400 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1401 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1402 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1403 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1405 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1406 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1407 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1408 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1409 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1410 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1411 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1413 package_flags :: [Flag (CmdLineP DynFlags)]
1415 ------- Packages ----------------------------------------------------
1416 Flag "package-conf" (HasArg extraPkgConf_)
1417 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1418 , Flag "package-name" (hasArg setPackageName)
1419 , Flag "package-id" (HasArg exposePackageId)
1420 , Flag "package" (HasArg exposePackage)
1421 , Flag "hide-package" (HasArg hidePackage)
1422 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1423 , Flag "ignore-package" (HasArg ignorePackage)
1424 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1425 ; deprecate "Use -package instead" }))
1428 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1429 -- False <=> we are turning the flag off
1430 turnOn :: TurnOnFlag; turnOn = True
1431 turnOff :: TurnOnFlag; turnOff = False
1434 = ( String -- Flag in string form
1435 , flag -- Flag in internal form
1436 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1437 -- Typically, emit a warning or error
1439 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1440 -> String -- ^ The flag prefix
1441 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1442 -> FlagSpec flag -- ^ Specification of this particular flag
1443 -> Flag (CmdLineP DynFlags)
1444 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1445 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1447 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1448 deprecatedForExtension lang turn_on
1449 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1451 flag | turn_on = lang
1452 | otherwise = "No"++lang
1454 useInstead :: String -> TurnOnFlag -> DynP ()
1455 useInstead flag turn_on
1456 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1458 no = if turn_on then "" else "no-"
1460 nop :: TurnOnFlag -> DynP ()
1463 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1464 fFlags :: [FlagSpec DynFlag]
1466 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1467 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1468 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1469 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1470 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1471 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1472 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1473 ( "warn-incomplete-uni-patterns", Opt_WarnIncompleteUniPatterns, nop ),
1474 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1475 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1476 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1477 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1478 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1479 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1480 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1481 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1482 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1483 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1484 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1485 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1486 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1487 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1488 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1489 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1490 ( "warn-orphans", Opt_WarnOrphans, nop ),
1491 ( "warn-identities", Opt_WarnIdentities, nop ),
1492 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1493 ( "warn-tabs", Opt_WarnTabs, nop ),
1494 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1495 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1496 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1497 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1498 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1499 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1500 ( "strictness", Opt_Strictness, nop ),
1501 ( "specialise", Opt_Specialise, nop ),
1502 ( "float-in", Opt_FloatIn, nop ),
1503 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1504 ( "full-laziness", Opt_FullLaziness, nop ),
1505 ( "liberate-case", Opt_LiberateCase, nop ),
1506 ( "spec-constr", Opt_SpecConstr, nop ),
1507 ( "cse", Opt_CSE, nop ),
1508 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1509 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1510 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1511 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1512 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1513 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1514 ( "case-merge", Opt_CaseMerge, nop ),
1515 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1516 ( "method-sharing", Opt_MethodSharing,
1517 \_ -> deprecate "doesn't do anything any more"),
1518 -- Remove altogether in GHC 7.2
1519 ( "dicts-cheap", Opt_DictsCheap, nop ),
1520 ( "excess-precision", Opt_ExcessPrecision, nop ),
1521 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1522 ( "print-bind-result", Opt_PrintBindResult, nop ),
1523 ( "force-recomp", Opt_ForceRecomp, nop ),
1524 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1525 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1526 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1527 ( "break-on-exception", Opt_BreakOnException, nop ),
1528 ( "break-on-error", Opt_BreakOnError, nop ),
1529 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1530 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1531 ( "run-cps", Opt_RunCPS, nop ),
1532 ( "run-cpsz", Opt_RunCPSZ, nop ),
1533 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1534 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1535 ( "vectorise", Opt_Vectorise, nop ),
1536 ( "regs-graph", Opt_RegsGraph, nop ),
1537 ( "regs-iterative", Opt_RegsIterative, nop ),
1538 ( "gen-manifest", Opt_GenManifest, nop ),
1539 ( "embed-manifest", Opt_EmbedManifest, nop ),
1540 ( "ext-core", Opt_EmitExternalCore, nop ),
1541 ( "shared-implib", Opt_SharedImplib, nop ),
1542 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1543 ( "helpful-errors", Opt_HelpfulErrors, nop ),
1544 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1545 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1548 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1549 fLangFlags :: [FlagSpec ExtensionFlag]
1551 ( "th", Opt_TemplateHaskell,
1552 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1553 ( "fi", Opt_ForeignFunctionInterface,
1554 deprecatedForExtension "ForeignFunctionInterface" ),
1555 ( "ffi", Opt_ForeignFunctionInterface,
1556 deprecatedForExtension "ForeignFunctionInterface" ),
1557 ( "arrows", Opt_Arrows,
1558 deprecatedForExtension "Arrows" ),
1559 ( "generics", Opt_Generics,
1560 deprecatedForExtension "Generics" ),
1561 ( "implicit-prelude", Opt_ImplicitPrelude,
1562 deprecatedForExtension "ImplicitPrelude" ),
1563 ( "bang-patterns", Opt_BangPatterns,
1564 deprecatedForExtension "BangPatterns" ),
1565 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1566 deprecatedForExtension "MonomorphismRestriction" ),
1567 ( "mono-pat-binds", Opt_MonoPatBinds,
1568 deprecatedForExtension "MonoPatBinds" ),
1569 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1570 deprecatedForExtension "ExtendedDefaultRules" ),
1571 ( "implicit-params", Opt_ImplicitParams,
1572 deprecatedForExtension "ImplicitParams" ),
1573 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1574 deprecatedForExtension "ScopedTypeVariables" ),
1575 ( "parr", Opt_ParallelArrays,
1576 deprecatedForExtension "ParallelArrays" ),
1577 ( "PArr", Opt_ParallelArrays,
1578 deprecatedForExtension "ParallelArrays" ),
1579 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1580 deprecatedForExtension "OverlappingInstances" ),
1581 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1582 deprecatedForExtension "UndecidableInstances" ),
1583 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1584 deprecatedForExtension "IncoherentInstances" )
1587 supportedLanguages :: [String]
1588 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1590 supportedExtensions :: [String]
1591 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1593 supportedLanguagesAndExtensions :: [String]
1594 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1596 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1597 languageFlags :: [FlagSpec Language]
1599 ( "Haskell98", Haskell98, nop ),
1600 ( "Haskell2010", Haskell2010, nop )
1603 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1604 xFlags :: [FlagSpec ExtensionFlag]
1606 ( "CPP", Opt_Cpp, nop ),
1607 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1608 ( "TupleSections", Opt_TupleSections, nop ),
1609 ( "PatternGuards", Opt_PatternGuards, nop ),
1610 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1611 ( "MagicHash", Opt_MagicHash, nop ),
1612 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1613 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1614 ( "KindSignatures", Opt_KindSignatures, nop ),
1615 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1616 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1617 ( "TransformListComp", Opt_TransformListComp, nop ),
1618 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1619 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1620 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1621 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1622 ( "Rank2Types", Opt_Rank2Types, nop ),
1623 ( "RankNTypes", Opt_RankNTypes, nop ),
1624 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1625 ( "TypeOperators", Opt_TypeOperators, nop ),
1626 ( "RecursiveDo", Opt_RecursiveDo,
1627 deprecatedForExtension "DoRec"),
1628 ( "DoRec", Opt_DoRec, nop ),
1629 ( "Arrows", Opt_Arrows, nop ),
1630 ( "ParallelArrays", Opt_ParallelArrays, nop ),
1631 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1632 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1633 ( "Generics", Opt_Generics, nop ),
1634 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1635 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1636 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1637 ( "RecordPuns", Opt_RecordPuns,
1638 deprecatedForExtension "NamedFieldPuns" ),
1639 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1640 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1641 ( "GADTs", Opt_GADTs, nop ),
1642 ( "GADTSyntax", Opt_GADTSyntax, nop ),
1643 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1644 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1645 ( "BangPatterns", Opt_BangPatterns, nop ),
1646 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1647 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1648 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1649 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1650 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1651 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1652 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1653 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1654 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1655 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1656 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1657 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1658 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1659 \ turn_on -> if not turn_on
1660 then deprecate "You can't turn off RelaxedPolyRec any more"
1662 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1663 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1664 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1666 ( "PatternSignatures", Opt_ScopedTypeVariables,
1667 deprecatedForExtension "ScopedTypeVariables" ),
1669 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1670 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1671 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1672 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1673 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1674 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1675 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1676 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1677 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1678 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1679 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1680 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1681 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1682 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1683 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1684 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1685 ( "PackageImports", Opt_PackageImports, nop )
1688 defaultFlags :: [DynFlag]
1690 = [ Opt_AutoLinkPackages,
1691 Opt_ReadUserPackageConf,
1695 #if GHC_DEFAULT_NEW_CODEGEN
1701 Opt_PrintBindContents,
1706 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1707 -- The default -O0 options
1711 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1713 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1714 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1715 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1716 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1717 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1718 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1719 , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
1720 , (Opt_FunctionalDependencies, turnOn, Opt_MultiParamTypeClasses)
1722 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1724 , (Opt_GADTs, turnOn, Opt_GADTSyntax)
1725 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1726 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1728 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1729 -- all over the place
1731 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1733 -- Record wild-cards implies field disambiguation
1734 -- Otherwise if you write (C {..}) you may well get
1735 -- stuff like " 'a' not in scope ", which is a bit silly
1736 -- if the compiler has just filled in field 'a' of constructor 'C'
1737 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1739 , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
1742 optLevelFlags :: [([Int], DynFlag)]
1744 = [ ([0], Opt_IgnoreInterfacePragmas)
1745 , ([0], Opt_OmitInterfacePragmas)
1747 , ([1,2], Opt_IgnoreAsserts)
1748 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1750 , ([1,2], Opt_DoEtaReduction)
1751 , ([1,2], Opt_CaseMerge)
1752 , ([1,2], Opt_Strictness)
1754 , ([1,2], Opt_FullLaziness)
1755 , ([1,2], Opt_Specialise)
1756 , ([1,2], Opt_FloatIn)
1758 , ([2], Opt_LiberateCase)
1759 , ([2], Opt_SpecConstr)
1760 , ([2], Opt_RegsGraph)
1762 -- , ([2], Opt_StaticArgumentTransformation)
1763 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1764 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1765 -- several improvements to the heuristics, and I'm concerned that without
1766 -- those changes SAT will interfere with some attempts to write "high
1767 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1768 -- this year. In particular, the version in HEAD lacks the tail call
1769 -- criterion, so many things that look like reasonable loops will be
1770 -- turned into functions with extra (unneccesary) thunk creation.
1772 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1773 -- This one is important for a tiresome reason:
1774 -- we want to make sure that the bindings for data
1775 -- constructors are eta-expanded. This is probably
1776 -- a good thing anyway, but it seems fragile.
1779 -- -----------------------------------------------------------------------------
1780 -- Standard sets of warning options
1782 standardWarnings :: [DynFlag]
1784 = [ Opt_WarnWarningsDeprecations,
1785 Opt_WarnDeprecatedFlags,
1786 Opt_WarnUnrecognisedPragmas,
1787 Opt_WarnOverlappingPatterns,
1788 Opt_WarnMissingFields,
1789 Opt_WarnMissingMethods,
1790 Opt_WarnDuplicateExports,
1791 Opt_WarnLazyUnliftedBindings,
1792 Opt_WarnDodgyForeignImports,
1793 Opt_WarnWrongDoBind,
1794 Opt_WarnAlternativeLayoutRuleTransitional
1797 minusWOpts :: [DynFlag]
1798 -- Things you get with -W
1800 = standardWarnings ++
1801 [ Opt_WarnUnusedBinds,
1802 Opt_WarnUnusedMatches,
1803 Opt_WarnUnusedImports,
1804 Opt_WarnIncompletePatterns,
1805 Opt_WarnDodgyExports,
1806 Opt_WarnDodgyImports
1809 minusWallOpts :: [DynFlag]
1810 -- Things you get with -Wall
1813 [ Opt_WarnTypeDefaults,
1814 Opt_WarnNameShadowing,
1815 Opt_WarnMissingSigs,
1818 Opt_WarnUnusedDoBind
1821 minuswRemovesOpts :: [DynFlag]
1822 -- minuswRemovesOpts should be every warning option
1826 Opt_WarnIncompletePatternsRecUpd,
1827 Opt_WarnIncompleteUniPatterns,
1828 Opt_WarnMonomorphism,
1829 Opt_WarnUnrecognisedPragmas,
1830 Opt_WarnAutoOrphans,
1831 Opt_WarnImplicitPrelude
1834 enableGlasgowExts :: DynP ()
1835 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1836 mapM_ setExtensionFlag glasgowExtsFlags
1838 disableGlasgowExts :: DynP ()
1839 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1840 mapM_ unSetExtensionFlag glasgowExtsFlags
1842 glasgowExtsFlags :: [ExtensionFlag]
1843 glasgowExtsFlags = [
1844 Opt_ForeignFunctionInterface
1845 , Opt_UnliftedFFITypes
1846 , Opt_ImplicitParams
1847 , Opt_ScopedTypeVariables
1849 , Opt_TypeSynonymInstances
1850 , Opt_StandaloneDeriving
1851 , Opt_DeriveDataTypeable
1853 , Opt_DeriveFoldable
1854 , Opt_DeriveTraversable
1855 , Opt_FlexibleContexts
1856 , Opt_FlexibleInstances
1857 , Opt_ConstrainedClassMethods
1858 , Opt_MultiParamTypeClasses
1859 , Opt_FunctionalDependencies
1861 , Opt_PolymorphicComponents
1862 , Opt_ExistentialQuantification
1864 , Opt_PostfixOperators
1866 , Opt_LiberalTypeSynonyms
1870 , Opt_ParallelListComp
1871 , Opt_EmptyDataDecls
1872 , Opt_KindSignatures
1873 , Opt_GeneralizedNewtypeDeriving ]
1876 -- Consult the RTS to find whether GHC itself has been built profiled
1877 -- If so, you can't use Template Haskell
1878 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1880 rtsIsProfiled :: Bool
1881 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1884 checkTemplateHaskellOk :: Bool -> DynP ()
1886 checkTemplateHaskellOk turn_on
1887 | turn_on && rtsIsProfiled
1888 = addErr "You can't use Template Haskell with a profiled compiler"
1892 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1893 -- so we simply say "ok". It doesn't matter because TH isn't
1894 -- available in stage 1 anyway.
1895 checkTemplateHaskellOk _ = return ()
1898 {- **********************************************************************
1900 DynFlags constructors
1902 %********************************************************************* -}
1904 type DynP = EwM (CmdLineP DynFlags)
1906 upd :: (DynFlags -> DynFlags) -> DynP ()
1907 upd f = liftEwM (do { dfs <- getCmdLineState
1908 ; putCmdLineState $! (f dfs) })
1910 --------------- Constructor functions for OptKind -----------------
1911 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1912 noArg fn = NoArg (upd fn)
1914 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1915 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1917 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1918 hasArg fn = HasArg (upd . fn)
1920 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1921 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1922 ; deprecate deprec })
1924 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1925 intSuffix fn = IntSuffix (\n -> upd (fn n))
1927 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1928 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1930 --------------------------
1931 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1932 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1933 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1935 --------------------------
1936 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1937 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1940 deps = [ if turn_on then setExtensionFlag d
1941 else unSetExtensionFlag d
1942 | (f', turn_on, d) <- impliedFlags, f' == f ]
1943 -- When you set f, set the ones it implies
1944 -- NB: use setExtensionFlag recursively, in case the implied flags
1945 -- implies further flags
1947 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1948 -- When you un-set f, however, we don't un-set the things it implies
1949 -- (except for -fno-glasgow-exts, which is treated specially)
1951 --------------------------
1952 alterSettings :: (Settings -> Settings) -> DynFlags -> DynFlags
1953 alterSettings f dflags = dflags { settings = f (settings dflags) }
1955 --------------------------
1956 setDumpFlag' :: DynFlag -> DynP ()
1957 setDumpFlag' dump_flag
1958 = do { setDynFlag dump_flag
1959 ; when want_recomp forceRecompile }
1961 -- Certain dumpy-things are really interested in what's going
1962 -- on during recompilation checking, so in those cases we
1963 -- don't want to turn it off.
1964 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1965 Opt_D_dump_hi_diffs]
1967 forceRecompile :: DynP ()
1968 -- Whenver we -ddump, force recompilation (by switching off the
1969 -- recompilation checker), else you don't see the dump! However,
1970 -- don't switch it off in --make mode, else *everything* gets
1971 -- recompiled which probably isn't what you want
1972 forceRecompile = do { dfs <- liftEwM getCmdLineState
1973 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1975 force_recomp dfs = isOneShot (ghcMode dfs)
1977 setVerboseCore2Core :: DynP ()
1978 setVerboseCore2Core = do forceRecompile
1979 setDynFlag Opt_D_verbose_core2core
1980 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1983 setDumpSimplPhases :: String -> DynP ()
1984 setDumpSimplPhases s = do forceRecompile
1985 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1987 spec = case s of { ('=' : s') -> s'; _ -> s }
1989 setVerbosity :: Maybe Int -> DynP ()
1990 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1992 addCmdlineHCInclude :: String -> DynP ()
1993 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1995 extraPkgConf_ :: FilePath -> DynP ()
1996 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1998 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
2000 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
2002 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
2004 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
2006 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
2008 setPackageName :: String -> DynFlags -> DynFlags
2009 setPackageName p s = s{ thisPackage = stringToPackageId p }
2011 -- If we're linking a binary, then only targets that produce object
2012 -- code are allowed (requests for other target types are ignored).
2013 setTarget :: HscTarget -> DynP ()
2014 setTarget l = upd set
2017 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
2020 -- Changes the target only if we're compiling object code. This is
2021 -- used by -fasm and -fllvm, which switch from one to the other, but
2022 -- not from bytecode to object-code. The idea is that -fasm/-fllvm
2023 -- can be safely used in an OPTIONS_GHC pragma.
2024 setObjTarget :: HscTarget -> DynP ()
2025 setObjTarget l = upd set
2028 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
2031 setOptLevel :: Int -> DynFlags -> DynFlags
2032 setOptLevel n dflags
2033 | hscTarget dflags == HscInterpreted && n > 0
2035 -- not in IO any more, oh well:
2036 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
2038 = updOptLevel n dflags
2041 -- -Odph is equivalent to
2043 -- -O2 optimise as much as possible
2044 -- -fmax-simplifier-iterations20 this is necessary sometimes
2045 -- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
2047 setDPHOpt :: DynFlags -> DynFlags
2048 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
2052 -- Determines the package used by the vectoriser for the symbols of the vectorised code.
2053 -- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
2054 -- vectoriser cannot be used.
2056 data DPHBackend = DPHPar -- "dph-par"
2057 | DPHSeq -- "dph-seq"
2058 | DPHThis -- the currently compiled package
2059 | DPHNone -- no DPH library available
2060 deriving(Eq, Ord, Enum, Show)
2062 setDPHBackend :: DPHBackend -> DynP ()
2063 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
2065 -- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
2067 dphPackageMaybe :: DynFlags -> Maybe PackageId
2068 dphPackageMaybe dflags
2069 = case dphBackend dflags of
2070 DPHPar -> Just dphParPackageId
2071 DPHSeq -> Just dphSeqPackageId
2072 DPHThis -> Just (thisPackage dflags)
2075 setMainIs :: String -> DynP ()
2077 | not (null main_fn) && isLower (head main_fn)
2078 -- The arg looked like "Foo.Bar.baz"
2079 = upd $ \d -> d{ mainFunIs = Just main_fn,
2080 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2082 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2083 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2085 | otherwise -- The arg looked like "baz"
2086 = upd $ \d -> d{ mainFunIs = Just arg }
2088 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2090 -----------------------------------------------------------------------------
2091 -- Paths & Libraries
2093 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2095 -- -i on its own deletes the import paths
2096 addImportPath "" = upd (\s -> s{importPaths = []})
2097 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2101 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2104 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2106 addFrameworkPath p =
2107 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2109 #ifndef mingw32_TARGET_OS
2110 split_marker :: Char
2111 split_marker = ':' -- not configurable (ToDo)
2114 splitPathList :: String -> [String]
2115 splitPathList s = filter notNull (splitUp s)
2116 -- empty paths are ignored: there might be a trailing
2117 -- ':' in the initial list, for example. Empty paths can
2118 -- cause confusion when they are translated into -I options
2119 -- for passing to gcc.
2121 #ifndef mingw32_TARGET_OS
2122 splitUp xs = split split_marker xs
2124 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2126 -- That is, if "foo:bar:baz" is used, this interpreted as
2127 -- consisting of three entries, 'foo', 'bar', 'baz'.
2128 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2129 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2131 -- Notice that no attempt is made to fully replace the 'standard'
2132 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2133 -- that this will cause too much breakage for users & ':' will
2134 -- work fine even with DOS paths, if you're not insisting on being silly.
2137 splitUp (x:':':div:xs) | div `elem` dir_markers
2138 = ((x:':':div:p): splitUp rs)
2140 (p,rs) = findNextPath xs
2141 -- we used to check for existence of the path here, but that
2142 -- required the IO monad to be threaded through the command-line
2143 -- parser which is quite inconvenient. The
2144 splitUp xs = cons p (splitUp rs)
2146 (p,rs) = findNextPath xs
2151 -- will be called either when we've consumed nought or the
2152 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2153 -- finding the next split marker.
2155 case break (`elem` split_markers) xs of
2156 (p, _:ds) -> (p, ds)
2159 split_markers :: [Char]
2160 split_markers = [':', ';']
2162 dir_markers :: [Char]
2163 dir_markers = ['/', '\\']
2166 -- -----------------------------------------------------------------------------
2167 -- tmpDir, where we store temporary files.
2169 setTmpDir :: FilePath -> DynFlags -> DynFlags
2170 setTmpDir dir = alterSettings (\s -> s { sTmpDir = normalise dir })
2171 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2172 -- seem necessary now --SDM 7/2/2008
2174 -----------------------------------------------------------------------------
2177 setRtsOpts :: String -> DynP ()
2178 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2180 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2181 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2183 -----------------------------------------------------------------------------
2186 setOptHpcDir :: String -> DynP ()
2187 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2189 -----------------------------------------------------------------------------
2190 -- Via-C compilation stuff
2192 -- There are some options that we need to pass to gcc when compiling
2193 -- Haskell code via C, but are only supported by recent versions of
2194 -- gcc. The configure script decides which of these options we need,
2195 -- and puts them in the "settings" file in $topdir. The advantage of
2196 -- having these in a separate file is that the file can be created at
2197 -- install-time depending on the available gcc version, and even
2198 -- re-generated later if gcc is upgraded.
2200 -- The options below are not dependent on the version of gcc, only the
2203 machdepCCOpts :: DynFlags -> [String] -- flags for all C compilations
2204 machdepCCOpts _ = cCcOpts ++ machdepCCOpts'
2206 machdepCCOpts' :: [String] -- flags for all C compilations
2208 #if alpha_TARGET_ARCH
2210 #ifdef HAVE_THREADED_RTS_SUPPORT
2214 -- For now, to suppress the gcc warning "call-clobbered
2215 -- register used for global register variable", we simply
2216 -- disable all warnings altogether using the -w flag. Oh well.
2218 #elif hppa_TARGET_ARCH
2219 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2220 -- (very nice, but too bad the HP /usr/include files don't agree.)
2221 = ["-D_HPUX_SOURCE"]
2223 #elif i386_TARGET_ARCH
2224 -- -fno-defer-pop : basically the same game as for m68k
2226 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2227 -- the fp (%ebp) for our register maps.
2228 = if opt_Static then ["-DDONT_WANT_WIN32_DLL_SUPPORT"] else []
2234 picCCOpts :: DynFlags -> [String]
2236 #if darwin_TARGET_OS
2237 -- Apple prefers to do things the other way round.
2238 -- PIC is on by default.
2239 -- -mdynamic-no-pic:
2240 -- Turn off PIC code generation.
2242 -- Don't generate "common" symbols - these are unwanted
2243 -- in dynamic libraries.
2246 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2248 = ["-mdynamic-no-pic"]
2249 #elif mingw32_TARGET_OS
2250 -- no -fPIC for Windows
2252 = ["-U __PIC__","-D__PIC__"]
2256 -- we need -fPIC for C files when we are compiling with -dynamic,
2257 -- otherwise things like stub.c files don't get compiled
2258 -- correctly. They need to reference data in the Haskell
2259 -- objects, but can't without -fPIC. See
2260 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2261 | opt_PIC || not opt_Static
2262 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2267 -- -----------------------------------------------------------------------------
2271 can_split = cSupportsSplitObjs == "YES"
2273 -- -----------------------------------------------------------------------------
2276 compilerInfo :: DynFlags -> [(String, String)]
2278 = -- We always make "Project name" be first to keep parsing in
2279 -- other languages simple, i.e. when looking for other fields,
2280 -- you don't have to worry whether there is a leading '[' or not
2281 ("Project name", cProjectName)
2282 -- Next come the settings, so anything else can be overridden
2283 -- in the settings file (as "lookup" uses the first match for the
2285 : rawSettings dflags
2286 ++ [("Project version", cProjectVersion),
2287 ("Booter version", cBooterVersion),
2289 ("Build platform", cBuildPlatformString),
2290 ("Host platform", cHostPlatformString),
2291 ("Target platform", cTargetPlatformString),
2292 ("Have interpreter", cGhcWithInterpreter),
2293 ("Object splitting supported", cSupportsSplitObjs),
2294 ("Have native code generator", cGhcWithNativeCodeGen),
2295 ("Support SMP", cGhcWithSMP),
2296 ("Unregisterised", cGhcUnregisterised),
2297 ("Tables next to code", cGhcEnableTablesNextToCode),
2298 ("RTS ways", cGhcRTSWays),
2299 ("Leading underscore", cLeadingUnderscore),
2300 ("Debug on", show debugIsOn),
2301 ("LibDir", topDir dflags),
2302 ("Global Package DB", systemPackageConfig dflags),
2303 ("C compiler flags", show cCcOpts),
2304 ("Gcc Linker flags", show cGccLinkerOpts),
2305 ("Ld Linker flags", show cLdLinkerOpts)