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_F_coqpass -- run the core-to-core coqPass, but don't change anything (just "parse/unparse")
194 | Opt_F_skolemize -- run the core-to-core coqPass, skolemizing the proof
195 | Opt_F_flatten -- run the core-to-core coqPass, flattening the proof
196 | Opt_F_simpleopt_before_flatten -- run the "simplPgmOpt" before the coqPass
197 | Opt_D_dump_proofs -- dump natural deduction typing proof of the coqpass input
198 | Opt_D_coqpass -- run the core-to-string coqPass and dumps the result
200 | Opt_WarnIsError -- -Werror; makes warnings fatal
201 | Opt_WarnDuplicateExports
203 | Opt_WarnImplicitPrelude
204 | Opt_WarnIncompletePatterns
205 | Opt_WarnIncompleteUniPatterns
206 | Opt_WarnIncompletePatternsRecUpd
207 | Opt_WarnMissingFields
208 | Opt_WarnMissingImportList
209 | Opt_WarnMissingMethods
210 | Opt_WarnMissingSigs
211 | Opt_WarnMissingLocalSigs
212 | Opt_WarnNameShadowing
213 | Opt_WarnOverlappingPatterns
214 | Opt_WarnTypeDefaults
215 | Opt_WarnMonomorphism
216 | Opt_WarnUnusedBinds
217 | Opt_WarnUnusedImports
218 | Opt_WarnUnusedMatches
219 | Opt_WarnWarningsDeprecations
220 | Opt_WarnDeprecatedFlags
221 | Opt_WarnDodgyExports
222 | Opt_WarnDodgyImports
224 | Opt_WarnAutoOrphans
227 | Opt_WarnUnrecognisedPragmas
228 | Opt_WarnDodgyForeignImports
229 | Opt_WarnLazyUnliftedBindings
230 | Opt_WarnUnusedDoBind
231 | Opt_WarnWrongDoBind
232 | Opt_WarnAlternativeLayoutRuleTransitional
234 | Opt_PrintExplicitForalls
241 | Opt_StaticArgumentTransformation
245 | Opt_DoLambdaEtaExpansion
249 | Opt_UnboxStrictFields
250 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
252 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
254 | Opt_RegsGraph -- do graph coloring register allocation
255 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
258 | Opt_IgnoreInterfacePragmas
259 | Opt_OmitInterfacePragmas
260 | Opt_ExposeAllUnfoldings
263 | Opt_AutoSccsOnAllToplevs
264 | Opt_AutoSccsOnExportedToplevs
265 | Opt_AutoSccsOnIndividualCafs
271 | Opt_ExcessPrecision
272 | Opt_EagerBlackHoling
273 | Opt_ReadUserPackageConf
277 | Opt_HideAllPackages
278 | Opt_PrintBindResult
282 | Opt_BreakOnException
284 | Opt_PrintEvldWithShow
285 | Opt_PrintBindContents
288 | Opt_EmitExternalCore
290 | Opt_BuildingCabalPackage
298 | Opt_ConvertToZipCfgAndBack
299 | Opt_AutoLinkPackages
300 | Opt_ImplicitImportQualified
308 | Opt_KeepRawTokenStream
313 data Language = Haskell98 | Haskell2010
317 | Opt_OverlappingInstances
318 | Opt_UndecidableInstances
319 | Opt_IncoherentInstances
320 | Opt_MonomorphismRestriction
323 | Opt_RelaxedPolyRec -- Deprecated
324 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
325 | Opt_ForeignFunctionInterface
326 | Opt_UnliftedFFITypes
327 | Opt_GHCForeignImportPrim
328 | Opt_ParallelArrays -- Syntactic support for parallel arrays
329 | Opt_Arrows -- Arrow-notation syntax
330 | Opt_ModalTypes -- Heterogeneous Metaprogramming (modal types, brackets, escape, CSP)
331 | Opt_TemplateHaskell
334 | Opt_Generics -- "Derivable type classes"
335 | Opt_ImplicitPrelude
336 | Opt_ScopedTypeVariables
340 | Opt_OverloadedStrings
341 | Opt_DisambiguateRecordFields
342 | Opt_RecordWildCards
348 | Opt_DoAndIfThenElse
349 | Opt_RebindableSyntax
351 | Opt_StandaloneDeriving
352 | Opt_DeriveDataTypeable
354 | Opt_DeriveTraversable
357 | Opt_TypeSynonymInstances
358 | Opt_FlexibleContexts
359 | Opt_FlexibleInstances
360 | Opt_ConstrainedClassMethods
361 | Opt_MultiParamTypeClasses
362 | Opt_FunctionalDependencies
364 | Opt_PolymorphicComponents
365 | Opt_ExistentialQuantification
369 | Opt_ParallelListComp
370 | Opt_TransformListComp
371 | Opt_GeneralizedNewtypeDeriving
374 | Opt_PostfixOperators
377 | Opt_LiberalTypeSynonyms
380 | Opt_ImpredicativeTypes
384 | Opt_AlternativeLayoutRule
385 | Opt_AlternativeLayoutRuleTransitional
386 | Opt_DatatypeContexts
387 | Opt_NondecreasingIndentation
391 -- | Contains not only a collection of 'DynFlag's but also a plethora of
392 -- information relating to the compilation of a single file or GHC session
393 data DynFlags = DynFlags {
396 hscTarget :: HscTarget,
397 hscOutName :: String, -- ^ Name of the output file
398 extCoreName :: String, -- ^ Name of the .hcr output file
399 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
400 optLevel :: Int, -- ^ Optimisation level
401 simplPhases :: Int, -- ^ Number of simplifier phases
402 maxSimplIterations :: Int, -- ^ Max simplifier iterations
403 shouldDumpSimplPhase :: Maybe String,
404 ruleCheck :: Maybe String,
405 strictnessBefore :: [Int], -- ^ Additional demand analysis
407 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
408 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
409 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
410 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
411 -- See CoreMonad.FloatOutSwitches
413 #ifndef OMIT_NATIVE_CODEGEN
414 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
416 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
417 importPaths :: [FilePath],
419 mainFunIs :: Maybe String,
420 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
422 dphBackend :: DPHBackend,
424 thisPackage :: PackageId, -- ^ name of package currently being compiled
427 ways :: [Way], -- ^ Way flags from the command line
428 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
429 rtsBuildTag :: String, -- ^ The RTS \"way\"
431 -- For object splitting
432 splitInfo :: Maybe (String,Int),
435 objectDir :: Maybe String,
436 dylibInstallName :: Maybe String,
437 hiDir :: Maybe String,
438 stubDir :: Maybe String,
444 outputFile :: Maybe String,
445 outputHi :: Maybe String,
446 dynLibLoader :: DynLibLoader,
448 -- | This is set by 'DriverPipeline.runPipeline' based on where
449 -- its output is going.
450 dumpPrefix :: Maybe FilePath,
452 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
453 -- Set by @-ddump-file-prefix@
454 dumpPrefixForce :: Maybe FilePath,
456 includePaths :: [String],
457 libraryPaths :: [String],
458 frameworkPaths :: [String], -- used on darwin only
459 cmdlineFrameworks :: [String], -- ditto
461 rtsOpts :: Maybe String,
462 rtsOptsEnabled :: RtsOptsEnabled,
464 hpcDir :: String, -- ^ Path to store the .mix files
466 settings :: Settings,
469 depMakefile :: FilePath,
470 depIncludePkgDeps :: Bool,
471 depExcludeMods :: [ModuleName],
472 depSuffixes :: [String],
475 extraPkgConfs :: [FilePath],
476 -- ^ The @-package-conf@ flags given on the command line, in the order
479 packageFlags :: [PackageFlag],
480 -- ^ The @-package@ and @-hide-package@ flags from the command-line
483 -- NB. do not modify this field, it is calculated by
484 -- Packages.initPackages and Packages.updatePackages.
485 pkgDatabase :: Maybe [PackageConfig],
486 pkgState :: PackageState,
489 -- These have to be IORefs, because the defaultCleanupHandler needs to
490 -- know what to clean when an exception happens
491 filesToClean :: IORef [FilePath],
492 dirsToClean :: IORef (Map FilePath FilePath),
496 -- Don't change this without updating extensionFlags:
497 language :: Maybe Language,
498 -- Don't change this without updating extensionFlags:
499 extensions :: [OnOff ExtensionFlag],
500 -- extensionFlags should always be equal to
501 -- flattenExtensionFlags language extensions
502 extensionFlags :: [ExtensionFlag],
504 -- | Message output action: use "ErrUtils" instead of this if you can
505 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
507 haddockOptions :: Maybe String
510 data Settings = Settings {
511 sGhcUsagePath :: FilePath, -- Filled in by SysTools
512 sGhciUsagePath :: FilePath, -- ditto
514 sTmpDir :: String, -- no trailing '/'
515 -- You shouldn't need to look things up in rawSettings directly.
516 -- They should have their own fields instead.
517 sRawSettings :: [(String, String)],
518 sExtraGccViaCFlags :: [String],
519 sSystemPackageConfig :: FilePath,
520 -- commands for particular phases
522 sPgm_P :: (String,[Option]),
524 sPgm_c :: (String,[Option]),
525 sPgm_s :: (String,[Option]),
526 sPgm_a :: (String,[Option]),
527 sPgm_l :: (String,[Option]),
528 sPgm_dll :: (String,[Option]),
530 sPgm_sysman :: String,
531 sPgm_windres :: String,
532 sPgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
533 sPgm_lc :: (String,[Option]), -- LLVM: llc static compiler
534 -- options for particular phases
542 sOpt_windres :: [String],
543 sOpt_lo :: [String], -- LLVM: llvm optimiser
544 sOpt_lc :: [String] -- LLVM: llc static compiler
548 ghcUsagePath :: DynFlags -> FilePath
549 ghcUsagePath dflags = sGhcUsagePath (settings dflags)
550 ghciUsagePath :: DynFlags -> FilePath
551 ghciUsagePath dflags = sGhciUsagePath (settings dflags)
552 topDir :: DynFlags -> FilePath
553 topDir dflags = sTopDir (settings dflags)
554 tmpDir :: DynFlags -> String
555 tmpDir dflags = sTmpDir (settings dflags)
556 rawSettings :: DynFlags -> [(String, String)]
557 rawSettings dflags = sRawSettings (settings dflags)
558 extraGccViaCFlags :: DynFlags -> [String]
559 extraGccViaCFlags dflags = sExtraGccViaCFlags (settings dflags)
560 systemPackageConfig :: DynFlags -> FilePath
561 systemPackageConfig dflags = sSystemPackageConfig (settings dflags)
562 pgm_L :: DynFlags -> String
563 pgm_L dflags = sPgm_L (settings dflags)
564 pgm_P :: DynFlags -> (String,[Option])
565 pgm_P dflags = sPgm_P (settings dflags)
566 pgm_F :: DynFlags -> String
567 pgm_F dflags = sPgm_F (settings dflags)
568 pgm_c :: DynFlags -> (String,[Option])
569 pgm_c dflags = sPgm_c (settings dflags)
570 pgm_s :: DynFlags -> (String,[Option])
571 pgm_s dflags = sPgm_s (settings dflags)
572 pgm_a :: DynFlags -> (String,[Option])
573 pgm_a dflags = sPgm_a (settings dflags)
574 pgm_l :: DynFlags -> (String,[Option])
575 pgm_l dflags = sPgm_l (settings dflags)
576 pgm_dll :: DynFlags -> (String,[Option])
577 pgm_dll dflags = sPgm_dll (settings dflags)
578 pgm_T :: DynFlags -> String
579 pgm_T dflags = sPgm_T (settings dflags)
580 pgm_sysman :: DynFlags -> String
581 pgm_sysman dflags = sPgm_sysman (settings dflags)
582 pgm_windres :: DynFlags -> String
583 pgm_windres dflags = sPgm_windres (settings dflags)
584 pgm_lo :: DynFlags -> (String,[Option])
585 pgm_lo dflags = sPgm_lo (settings dflags)
586 pgm_lc :: DynFlags -> (String,[Option])
587 pgm_lc dflags = sPgm_lc (settings dflags)
588 opt_L :: DynFlags -> [String]
589 opt_L dflags = sOpt_L (settings dflags)
590 opt_P :: DynFlags -> [String]
591 opt_P dflags = sOpt_P (settings dflags)
592 opt_F :: DynFlags -> [String]
593 opt_F dflags = sOpt_F (settings dflags)
594 opt_c :: DynFlags -> [String]
595 opt_c dflags = sOpt_c (settings dflags)
596 opt_m :: DynFlags -> [String]
597 opt_m dflags = sOpt_m (settings dflags)
598 opt_a :: DynFlags -> [String]
599 opt_a dflags = sOpt_a (settings dflags)
600 opt_l :: DynFlags -> [String]
601 opt_l dflags = sOpt_l (settings dflags)
602 opt_windres :: DynFlags -> [String]
603 opt_windres dflags = sOpt_windres (settings dflags)
604 opt_lo :: DynFlags -> [String]
605 opt_lo dflags = sOpt_lo (settings dflags)
606 opt_lc :: DynFlags -> [String]
607 opt_lc dflags = sOpt_lc (settings dflags)
609 wayNames :: DynFlags -> [WayName]
610 wayNames = map wayName . ways
612 -- | The target code type of the compilation (if any).
614 -- Whenever you change the target, also make sure to set 'ghcLink' to
615 -- something sensible.
617 -- 'HscNothing' can be used to avoid generating any output, however, note
620 -- * This will not run the desugaring step, thus no warnings generated in
621 -- this step will be output. In particular, this includes warnings related
622 -- to pattern matching. You can run the desugarer manually using
623 -- 'GHC.desugarModule'.
625 -- * If a program uses Template Haskell the typechecker may try to run code
626 -- from an imported module. This will fail if no code has been generated
627 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
628 -- whether this might be the case and choose to either switch to a
629 -- different target or avoid typechecking such modules. (The latter may
630 -- preferable for security reasons.)
633 = HscC -- ^ Generate C code.
634 | HscAsm -- ^ Generate assembly using the native code generator.
635 | HscLlvm -- ^ Generate assembly using the llvm code generator.
636 | HscJava -- ^ Generate Java bytecode.
637 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
638 | HscNothing -- ^ Don't generate any code. See notes above.
641 -- | Will this target result in an object file on the disk?
642 isObjectTarget :: HscTarget -> Bool
643 isObjectTarget HscC = True
644 isObjectTarget HscAsm = True
645 isObjectTarget HscLlvm = True
646 isObjectTarget _ = False
648 -- | The 'GhcMode' tells us whether we're doing multi-module
649 -- compilation (controlled via the "GHC" API) or one-shot
650 -- (single-module) compilation. This makes a difference primarily to
651 -- the "Finder": in one-shot mode we look for interface files for
652 -- imported modules, but in multi-module mode we look for source files
653 -- in order to check whether they need to be recompiled.
655 = CompManager -- ^ @\-\-make@, GHCi, etc.
656 | OneShot -- ^ @ghc -c Foo.hs@
657 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
660 instance Outputable GhcMode where
661 ppr CompManager = ptext (sLit "CompManager")
662 ppr OneShot = ptext (sLit "OneShot")
663 ppr MkDepend = ptext (sLit "MkDepend")
665 isOneShot :: GhcMode -> Bool
666 isOneShot OneShot = True
667 isOneShot _other = False
669 -- | What to do in the link step, if there is one.
671 = NoLink -- ^ Don't link at all
672 | LinkBinary -- ^ Link object code into a binary
673 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
674 -- bytecode and object code).
675 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
678 isNoLink :: GhcLink -> Bool
679 isNoLink NoLink = True
682 -- Is it worth evaluating this Bool and caching it in the DynFlags value
683 -- during initDynFlags?
684 doingTickyProfiling :: DynFlags -> Bool
685 doingTickyProfiling _ = opt_Ticky
686 -- XXX -ticky is a static flag, because it implies -debug which is also
687 -- static. If the way flags were made dynamic, we could fix this.
690 = ExposePackage String
691 | ExposePackageId String
693 | IgnorePackage String
696 defaultHscTarget :: HscTarget
697 defaultHscTarget = defaultObjectTarget
699 -- | The 'HscTarget' value corresponding to the default way to create
700 -- object files on the current platform.
701 defaultObjectTarget :: HscTarget
703 | cGhcWithNativeCodeGen == "YES" = HscAsm
711 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
714 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
715 initDynFlags :: DynFlags -> IO DynFlags
716 initDynFlags dflags = do
717 -- someday these will be dynamic flags
718 ways <- readIORef v_Ways
719 refFilesToClean <- newIORef []
720 refDirsToClean <- newIORef Map.empty
723 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
724 rtsBuildTag = mkBuildTag ways,
725 filesToClean = refFilesToClean,
726 dirsToClean = refDirsToClean
729 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
730 -- and must be fully initialized by 'GHC.newSession' first.
731 defaultDynFlags :: Settings -> DynFlags
732 defaultDynFlags mySettings =
734 ghcMode = CompManager,
735 ghcLink = LinkBinary,
736 hscTarget = defaultHscTarget,
742 maxSimplIterations = 4,
743 shouldDumpSimplPhase = Nothing,
745 specConstrThreshold = Just 200,
746 specConstrCount = Just 3,
747 liberateCaseThreshold = Just 200,
748 floatLamArgs = Just 0, -- Default: float only if no fvs
749 strictnessBefore = [],
751 #ifndef OMIT_NATIVE_CODEGEN
752 targetPlatform = defaultTargetPlatform,
754 cmdlineHcIncludes = [],
758 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
760 dphBackend = DPHNone,
762 thisPackage = mainPackageId,
765 dylibInstallName = Nothing,
769 objectSuf = phaseInputExt StopLn,
770 hcSuf = phaseInputExt HCc,
773 outputFile = Nothing,
775 dynLibLoader = SystemDependent,
776 dumpPrefix = Nothing,
777 dumpPrefixForce = Nothing,
781 cmdlineFrameworks = [],
783 rtsOptsEnabled = RtsOptsSafeOnly,
789 pkgDatabase = Nothing,
790 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
791 ways = panic "defaultDynFlags: No ways",
792 buildTag = panic "defaultDynFlags: No buildTag",
793 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
795 settings = mySettings,
797 depMakefile = "Makefile",
798 depIncludePkgDeps = False,
801 -- end of ghc -M values
802 filesToClean = panic "defaultDynFlags: No filesToClean",
803 dirsToClean = panic "defaultDynFlags: No dirsToClean",
804 haddockOptions = Nothing,
805 flags = defaultFlags,
808 extensionFlags = flattenExtensionFlags Nothing [],
810 log_action = \severity srcSpan style msg ->
812 SevOutput -> printOutput (msg style)
813 SevInfo -> printErrs (msg style)
814 SevFatal -> printErrs (msg style)
817 printErrs ((mkLocMessage srcSpan msg) style)
818 -- careful (#2302): printErrs prints in UTF-8, whereas
819 -- converting to string first and using hPutStr would
820 -- just emit the low 8 bits of each unicode char.
824 Note [Verbosity levels]
825 ~~~~~~~~~~~~~~~~~~~~~~~
826 0 | print errors & warnings only
827 1 | minimal verbosity: print "compiling M ... done." for each module.
828 2 | equivalent to -dshow-passes
829 3 | equivalent to existing "ghc -v"
830 4 | "ghc -v -ddump-most"
831 5 | "ghc -v -ddump-all"
837 -- OnOffs accumulate in reverse order, so we use foldr in order to
838 -- process them in the right order
839 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
841 flattenExtensionFlags ml = foldr f defaultExtensionFlags
842 where f (On f) flags = f : delete f flags
843 f (Off f) flags = delete f flags
844 defaultExtensionFlags = languageExtensions ml
846 languageExtensions :: Maybe Language -> [ExtensionFlag]
848 languageExtensions Nothing
849 -- Nothing => the default case
850 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
851 -- behaviour the default, to see if anyone notices
853 -- In due course I'd like Opt_MonoLocalBinds to be on by default
854 -- But NB it's implied by GADTs etc
855 -- SLPJ September 2010
856 : Opt_NondecreasingIndentation -- This has been on by default for some time
857 : languageExtensions (Just Haskell2010)
859 languageExtensions (Just Haskell98)
860 = [Opt_ImplicitPrelude,
861 Opt_MonomorphismRestriction,
863 Opt_DatatypeContexts,
864 Opt_NondecreasingIndentation
865 -- strictly speaking non-standard, but we always had this
866 -- on implicitly before the option was added in 7.1, and
867 -- turning it off breaks code, so we're keeping it on for
868 -- backwards compatibility. Cabal uses -XHaskell98 by
869 -- default unless you specify another language.
872 languageExtensions (Just Haskell2010)
873 = [Opt_ImplicitPrelude,
874 Opt_MonomorphismRestriction,
875 Opt_DatatypeContexts,
877 Opt_ForeignFunctionInterface,
882 -- | Test whether a 'DynFlag' is set
883 dopt :: DynFlag -> DynFlags -> Bool
884 dopt f dflags = f `elem` (flags dflags)
887 dopt_set :: DynFlags -> DynFlag -> DynFlags
888 dopt_set dfs f = dfs{ flags = f : flags dfs }
890 -- | Unset a 'DynFlag'
891 dopt_unset :: DynFlags -> DynFlag -> DynFlags
892 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
894 -- | Test whether a 'ExtensionFlag' is set
895 xopt :: ExtensionFlag -> DynFlags -> Bool
896 xopt f dflags = f `elem` extensionFlags dflags
898 -- | Set a 'ExtensionFlag'
899 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
901 = let onoffs = On f : extensions dfs
902 in dfs { extensions = onoffs,
903 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
905 -- | Unset a 'ExtensionFlag'
906 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
908 = let onoffs = Off f : extensions dfs
909 in dfs { extensions = onoffs,
910 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
912 setLanguage :: Language -> DynP ()
913 setLanguage l = upd f
914 where f dfs = let mLang = Just l
915 oneoffs = extensions dfs
918 extensionFlags = flattenExtensionFlags mLang oneoffs
921 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
922 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
923 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
924 -> [a] -- ^ Correctly ordered extracted options
925 getOpts dflags opts = reverse (opts dflags)
926 -- We add to the options from the front, so we need to reverse the list
928 -- | Gets the verbosity flag for the current verbosity level. This is fed to
929 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
930 getVerbFlags :: DynFlags -> [String]
932 | verbosity dflags >= 4 = ["-v"]
935 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
936 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
937 setPgmP, addOptl, addOptP,
938 addCmdlineFramework, addHaddockOpts
939 :: String -> DynFlags -> DynFlags
940 setOutputFile, setOutputHi, setDumpPrefixForce
941 :: Maybe String -> DynFlags -> DynFlags
943 setObjectDir f d = d{ objectDir = Just f}
944 setHiDir f d = d{ hiDir = Just f}
945 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
946 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
947 -- \#included from the .hc file when compiling via C (i.e. unregisterised
949 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
950 setDylibInstallName f d = d{ dylibInstallName = Just f}
952 setObjectSuf f d = d{ objectSuf = f}
953 setHiSuf f d = d{ hiSuf = f}
954 setHcSuf f d = d{ hcSuf = f}
956 setOutputFile f d = d{ outputFile = f}
957 setOutputHi f d = d{ outputHi = f}
959 parseDynLibLoaderMode f d =
961 ("deploy", "") -> d{ dynLibLoader = Deployable }
962 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
963 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
965 setDumpPrefixForce f d = d { dumpPrefixForce = f}
967 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
968 -- Config.hs should really use Option.
969 setPgmP f = let (pgm:args) = words f in alterSettings (\s -> s { sPgm_P = (pgm, map Option args)})
970 addOptl f = alterSettings (\s -> s { sOpt_l = f : sOpt_l s})
971 addOptP f = alterSettings (\s -> s { sOpt_P = f : sOpt_P s})
974 setDepMakefile :: FilePath -> DynFlags -> DynFlags
975 setDepMakefile f d = d { depMakefile = deOptDep f }
977 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
978 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
980 addDepExcludeMod :: String -> DynFlags -> DynFlags
982 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
984 addDepSuffix :: FilePath -> DynFlags -> DynFlags
985 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
988 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
989 -- we need to strip the "-optdep" off of the arg
990 deOptDep :: String -> String
991 deOptDep x = case stripPrefix "-optdep" x of
995 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
997 addHaddockOpts f d = d{ haddockOptions = Just f}
999 -- -----------------------------------------------------------------------------
1000 -- Command-line options
1002 -- | When invoking external tools as part of the compilation pipeline, we
1003 -- pass these a sequence of options on the command-line. Rather than
1004 -- just using a list of Strings, we use a type that allows us to distinguish
1005 -- between filepaths and 'other stuff'. The reason for this is that
1006 -- this type gives us a handle on transforming filenames, and filenames only,
1007 -- to whatever format they're expected to be on a particular platform.
1009 = FileOption -- an entry that _contains_ filename(s) / filepaths.
1010 String -- a non-filepath prefix that shouldn't be
1011 -- transformed (e.g., "/out=")
1012 String -- the filepath/filename portion
1015 showOpt :: Option -> String
1016 showOpt (FileOption pre f) = pre ++ f
1017 showOpt (Option s) = s
1019 -----------------------------------------------------------------------------
1020 -- Setting the optimisation level
1022 updOptLevel :: Int -> DynFlags -> DynFlags
1023 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
1025 = dfs2{ optLevel = final_n }
1027 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
1028 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
1029 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
1031 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
1032 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
1034 -- -----------------------------------------------------------------------------
1035 -- StgToDo: abstraction of stg-to-stg passes to run.
1038 = StgDoMassageForProfiling -- should be (next to) last
1039 -- There's also setStgVarInfo, but its absolute "lastness"
1040 -- is so critical that it is hardwired in (no flag).
1043 getStgToDo :: DynFlags -> [StgToDo]
1047 stg_stats = dopt Opt_StgStats dflags
1049 todo1 = if stg_stats then [D_stg_stats] else []
1051 todo2 | WayProf `elem` wayNames dflags
1052 = StgDoMassageForProfiling : todo1
1056 {- **********************************************************************
1060 %********************************************************************* -}
1062 -- -----------------------------------------------------------------------------
1063 -- Parsing the dynamic flags.
1065 -- | Parse dynamic flags from a list of command line arguments. Returns the
1066 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1067 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1068 -- flags or missing arguments).
1069 parseDynamicFlags :: 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 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1076 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1077 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1078 parseDynamicNoPackageFlags :: Monad m =>
1079 DynFlags -> [Located String]
1080 -> m (DynFlags, [Located String], [Located String])
1081 -- ^ Updated 'DynFlags', left-over arguments, and
1082 -- list of warnings.
1083 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1085 parseDynamicFlags_ :: Monad m =>
1086 DynFlags -> [Located String] -> Bool
1087 -> m (DynFlags, [Located String], [Located String])
1088 parseDynamicFlags_ dflags0 args pkg_flags = do
1089 -- XXX Legacy support code
1090 -- We used to accept things like
1091 -- optdep-f -optdepdepend
1092 -- optdep-f -optdep depend
1093 -- optdep -f -optdepdepend
1094 -- optdep -f -optdep depend
1095 -- but the spaces trip up proper argument handling. So get rid of them.
1096 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1097 f (x : xs) = x : f xs
1101 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1102 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1103 | otherwise = dynamic_flags
1105 let ((leftover, errs, warns), dflags1)
1106 = runCmdLine (processArgs flag_spec args') dflags0
1107 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1109 let (pic_warns, dflags2)
1110 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1111 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1112 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1113 ++ "dynamic on this platform;\n ignoring -fllvm"],
1114 dflags1{ hscTarget = HscAsm })
1116 | otherwise = ([], dflags1)
1118 return (dflags2, leftover, pic_warns ++ warns)
1121 {- **********************************************************************
1123 DynFlags specifications
1125 %********************************************************************* -}
1127 allFlags :: [String]
1128 allFlags = map ('-':) $
1129 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1130 map ("fno-"++) flags ++
1131 map ("f"++) flags ++
1132 map ("f"++) flags' ++
1133 map ("X"++) supportedExtensions
1134 where ok (PrefixPred _ _) = False
1136 flags = [ name | (name, _, _) <- fFlags ]
1137 flags' = [ name | (name, _, _) <- fLangFlags ]
1139 --------------- The main flags themselves ------------------
1140 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1142 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1143 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1144 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1146 (HasArg (\s -> do { addCmdlineHCInclude s
1147 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1148 , Flag "v" (OptIntSuffix setVerbosity)
1150 ------- Specific phases --------------------------------------------
1151 -- need to appear before -pgmL to be parsed as LLVM flags.
1152 , Flag "pgmlo" (hasArg (\f -> alterSettings (\s -> s { sPgm_lo = (f,[])})))
1153 , Flag "pgmlc" (hasArg (\f -> alterSettings (\s -> s { sPgm_lc = (f,[])})))
1154 , Flag "pgmL" (hasArg (\f -> alterSettings (\s -> s { sPgm_L = f})))
1155 , Flag "pgmP" (hasArg setPgmP)
1156 , Flag "pgmF" (hasArg (\f -> alterSettings (\s -> s { sPgm_F = f})))
1157 , Flag "pgmc" (hasArg (\f -> alterSettings (\s -> s { sPgm_c = (f,[])})))
1158 , Flag "pgmm" (HasArg (\_ -> addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1159 , Flag "pgms" (hasArg (\f -> alterSettings (\s -> s { sPgm_s = (f,[])})))
1160 , Flag "pgma" (hasArg (\f -> alterSettings (\s -> s { sPgm_a = (f,[])})))
1161 , Flag "pgml" (hasArg (\f -> alterSettings (\s -> s { sPgm_l = (f,[])})))
1162 , Flag "pgmdll" (hasArg (\f -> alterSettings (\s -> s { sPgm_dll = (f,[])})))
1163 , Flag "pgmwindres" (hasArg (\f -> alterSettings (\s -> s { sPgm_windres = f})))
1165 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1166 , Flag "optlo" (hasArg (\f -> alterSettings (\s -> s { sOpt_lo = f : sOpt_lo s})))
1167 , Flag "optlc" (hasArg (\f -> alterSettings (\s -> s { sOpt_lc = f : sOpt_lc s})))
1168 , Flag "optL" (hasArg (\f -> alterSettings (\s -> s { sOpt_L = f : sOpt_L s})))
1169 , Flag "optP" (hasArg addOptP)
1170 , Flag "optF" (hasArg (\f -> alterSettings (\s -> s { sOpt_F = f : sOpt_F s})))
1171 , Flag "optc" (hasArg (\f -> alterSettings (\s -> s { sOpt_c = f : sOpt_c s})))
1172 , Flag "optm" (hasArg (\f -> alterSettings (\s -> s { sOpt_m = f : sOpt_m s})))
1173 , Flag "opta" (hasArg (\f -> alterSettings (\s -> s { sOpt_a = f : sOpt_a s})))
1174 , Flag "optl" (hasArg addOptl)
1175 , Flag "optwindres" (hasArg (\f -> alterSettings (\s -> s { sOpt_windres = f : sOpt_windres s})))
1178 (NoArg (if can_split
1179 then setDynFlag Opt_SplitObjs
1180 else addWarn "ignoring -fsplit-objs"))
1182 -------- ghc -M -----------------------------------------------------
1183 , Flag "dep-suffix" (hasArg addDepSuffix)
1184 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1185 , Flag "dep-makefile" (hasArg setDepMakefile)
1186 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1187 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1188 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1189 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1190 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1191 , Flag "exclude-module" (hasArg addDepExcludeMod)
1192 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1193 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1195 -------- Linking ----------------------------------------------------
1196 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1197 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1198 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1199 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1201 ------- Libraries ---------------------------------------------------
1202 , Flag "L" (Prefix addLibraryPath)
1203 , Flag "l" (AnySuffix (upd . addOptl))
1205 ------- Frameworks --------------------------------------------------
1206 -- -framework-path should really be -F ...
1207 , Flag "framework-path" (HasArg addFrameworkPath)
1208 , Flag "framework" (hasArg addCmdlineFramework)
1210 ------- Output Redirection ------------------------------------------
1211 , Flag "odir" (hasArg setObjectDir)
1212 , Flag "o" (SepArg (upd . setOutputFile . Just))
1213 , Flag "ohi" (hasArg (setOutputHi . Just ))
1214 , Flag "osuf" (hasArg setObjectSuf)
1215 , Flag "hcsuf" (hasArg setHcSuf)
1216 , Flag "hisuf" (hasArg setHiSuf)
1217 , Flag "hidir" (hasArg setHiDir)
1218 , Flag "tmpdir" (hasArg setTmpDir)
1219 , Flag "stubdir" (hasArg setStubDir)
1220 , Flag "outputdir" (hasArg setOutputDir)
1221 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1223 ------- Keeping temporary files -------------------------------------
1224 -- These can be singular (think ghc -c) or plural (think ghc --make)
1225 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1226 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1227 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1228 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1229 , Flag "keep-raw-s-file" (NoArg (addWarn "The -keep-raw-s-file flag does nothing; it will be removed in a future GHC release"))
1230 , Flag "keep-raw-s-files" (NoArg (addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1231 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1232 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1233 -- This only makes sense as plural
1234 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1236 ------- Miscellaneous ----------------------------------------------
1237 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1238 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1239 , Flag "with-rtsopts" (HasArg setRtsOpts)
1240 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1241 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1242 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1243 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1244 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1245 , Flag "main-is" (SepArg setMainIs)
1246 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1247 , Flag "haddock-opts" (hasArg addHaddockOpts)
1248 , Flag "hpcdir" (SepArg setOptHpcDir)
1250 ------- recompilation checker --------------------------------------
1251 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1252 ; deprecate "Use -fno-force-recomp instead" }))
1253 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1254 ; deprecate "Use -fforce-recomp instead" }))
1256 ------ HsCpp opts ---------------------------------------------------
1257 , Flag "D" (AnySuffix (upd . addOptP))
1258 , Flag "U" (AnySuffix (upd . addOptP))
1260 ------- Include/Import Paths ----------------------------------------
1261 , Flag "I" (Prefix addIncludePath)
1262 , Flag "i" (OptPrefix addImportPath)
1264 ------ Debugging ----------------------------------------------------
1265 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1267 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1268 , Flag "ddump-raw-cmm" (setDumpFlag Opt_D_dump_raw_cmm)
1269 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1270 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1271 , Flag "ddump-core-stats" (setDumpFlag Opt_D_dump_core_stats)
1272 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1273 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1274 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1275 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1276 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1277 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1278 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1279 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1280 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1281 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1282 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1283 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1284 ; setDumpFlag' Opt_D_dump_llvm}))
1285 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1286 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1287 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1288 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1289 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1290 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1291 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1292 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1293 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1294 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1295 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1296 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1297 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1298 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1299 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1300 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1301 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1302 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1303 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1304 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1305 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1306 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1307 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1308 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1309 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1310 , Flag "ddump-cs-trace" (setDumpFlag Opt_D_dump_cs_trace)
1311 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1312 , Flag "ddump-vt-trace" (setDumpFlag Opt_D_dump_vt_trace)
1313 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1314 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1315 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1316 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1317 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1318 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1319 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1320 ; setVerboseCore2Core }))
1321 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1322 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1323 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1324 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1325 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1326 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1327 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1328 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1329 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1330 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1331 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1332 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1333 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1334 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1335 , Flag "dshow-passes" (NoArg (do forceRecompile
1336 setVerbosity (Just 2)))
1337 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1339 ------ Coq-in-GHC ---------------------------
1340 , Flag "ddump-proofs" (NoArg (setDynFlag Opt_D_dump_proofs))
1341 , Flag "ddump-coqpass" (NoArg (setDynFlag Opt_D_coqpass))
1342 , Flag "fcoqpass" (NoArg (setDynFlag Opt_F_coqpass))
1343 , Flag "fsimpleopt-before-flatten" (NoArg (setDynFlag Opt_F_simpleopt_before_flatten))
1344 , Flag "fflatten" (NoArg (do { setDynFlag Opt_F_coqpass ; setDynFlag Opt_F_flatten }))
1345 , Flag "funsafe-skolemize" (NoArg (do { setDynFlag Opt_F_coqpass ; setDynFlag Opt_F_flatten ; setDynFlag Opt_F_skolemize }))
1347 ------ Machine dependant (-m<blah>) stuff ---------------------------
1349 , Flag "monly-2-regs" (NoArg (addWarn "The -monly-2-regs flag does nothing; it will be removed in a future GHC release"))
1350 , Flag "monly-3-regs" (NoArg (addWarn "The -monly-3-regs flag does nothing; it will be removed in a future GHC release"))
1351 , Flag "monly-4-regs" (NoArg (addWarn "The -monly-4-regs flag does nothing; it will be removed in a future GHC release"))
1352 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1354 ------ Warning opts -------------------------------------------------
1355 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1356 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1357 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1358 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1359 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1360 ; deprecate "Use -w instead" }))
1361 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1363 ------ Optimisation flags ------------------------------------------
1364 , Flag "O" (noArg (setOptLevel 1))
1365 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1366 , Flag "Odph" (noArg setDPHOpt)
1367 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1368 -- If the number is missing, use 1
1370 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1371 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1372 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1373 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1374 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1375 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1376 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1377 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1378 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1379 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1380 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1381 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1382 , Flag "ffloat-all-lams" (noArg (\d -> d{ floatLamArgs = Nothing }))
1384 ------ Profiling ----------------------------------------------------
1386 -- XXX Should the -f* flags be deprecated?
1387 -- They don't seem to be documented
1388 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1389 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1390 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1391 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1392 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1393 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1394 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1395 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1396 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1398 ------ DPH flags ----------------------------------------------------
1400 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1401 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1402 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1403 , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
1405 ------ Compiler flags -----------------------------------------------
1407 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1408 , Flag "fvia-c" (NoArg
1409 (addWarn "The -fvia-c flag does nothing; it will be removed in a future GHC release"))
1410 , Flag "fvia-C" (NoArg
1411 (addWarn "The -fvia-C flag does nothing; it will be removed in a future GHC release"))
1412 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1414 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1415 setTarget HscNothing))
1416 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1417 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1418 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1419 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1421 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1422 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1423 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1424 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1425 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1426 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1427 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1429 package_flags :: [Flag (CmdLineP DynFlags)]
1431 ------- Packages ----------------------------------------------------
1432 Flag "package-conf" (HasArg extraPkgConf_)
1433 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1434 , Flag "package-name" (hasArg setPackageName)
1435 , Flag "package-id" (HasArg exposePackageId)
1436 , Flag "package" (HasArg exposePackage)
1437 , Flag "hide-package" (HasArg hidePackage)
1438 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1439 , Flag "ignore-package" (HasArg ignorePackage)
1440 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1441 ; deprecate "Use -package instead" }))
1444 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1445 -- False <=> we are turning the flag off
1446 turnOn :: TurnOnFlag; turnOn = True
1447 turnOff :: TurnOnFlag; turnOff = False
1450 = ( String -- Flag in string form
1451 , flag -- Flag in internal form
1452 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1453 -- Typically, emit a warning or error
1455 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1456 -> String -- ^ The flag prefix
1457 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1458 -> FlagSpec flag -- ^ Specification of this particular flag
1459 -> Flag (CmdLineP DynFlags)
1460 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1461 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1463 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1464 deprecatedForExtension lang turn_on
1465 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1467 flag | turn_on = lang
1468 | otherwise = "No"++lang
1470 useInstead :: String -> TurnOnFlag -> DynP ()
1471 useInstead flag turn_on
1472 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1474 no = if turn_on then "" else "no-"
1476 nop :: TurnOnFlag -> DynP ()
1479 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1480 fFlags :: [FlagSpec DynFlag]
1482 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1483 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1484 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1485 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1486 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1487 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1488 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1489 ( "warn-incomplete-uni-patterns", Opt_WarnIncompleteUniPatterns, nop ),
1490 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1491 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1492 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1493 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1494 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1495 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1496 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1497 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1498 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1499 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1500 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1501 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1502 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1503 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1504 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1505 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1506 ( "warn-orphans", Opt_WarnOrphans, nop ),
1507 ( "warn-identities", Opt_WarnIdentities, nop ),
1508 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1509 ( "warn-tabs", Opt_WarnTabs, nop ),
1510 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1511 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1512 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1513 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1514 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1515 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1516 ( "strictness", Opt_Strictness, nop ),
1517 ( "specialise", Opt_Specialise, nop ),
1518 ( "float-in", Opt_FloatIn, nop ),
1519 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1520 ( "full-laziness", Opt_FullLaziness, nop ),
1521 ( "liberate-case", Opt_LiberateCase, nop ),
1522 ( "spec-constr", Opt_SpecConstr, nop ),
1523 ( "cse", Opt_CSE, nop ),
1524 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1525 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1526 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1527 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1528 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1529 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1530 ( "case-merge", Opt_CaseMerge, nop ),
1531 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1532 ( "method-sharing", Opt_MethodSharing,
1533 \_ -> deprecate "doesn't do anything any more"),
1534 -- Remove altogether in GHC 7.2
1535 ( "dicts-cheap", Opt_DictsCheap, nop ),
1536 ( "excess-precision", Opt_ExcessPrecision, nop ),
1537 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1538 ( "print-bind-result", Opt_PrintBindResult, nop ),
1539 ( "force-recomp", Opt_ForceRecomp, nop ),
1540 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1541 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1542 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1543 ( "break-on-exception", Opt_BreakOnException, nop ),
1544 ( "break-on-error", Opt_BreakOnError, nop ),
1545 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1546 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1547 ( "run-cps", Opt_RunCPS, nop ),
1548 ( "run-cpsz", Opt_RunCPSZ, nop ),
1549 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1550 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1551 ( "vectorise", Opt_Vectorise, nop ),
1552 ( "regs-graph", Opt_RegsGraph, nop ),
1553 ( "regs-iterative", Opt_RegsIterative, nop ),
1554 ( "gen-manifest", Opt_GenManifest, nop ),
1555 ( "embed-manifest", Opt_EmbedManifest, nop ),
1556 ( "ext-core", Opt_EmitExternalCore, nop ),
1557 ( "shared-implib", Opt_SharedImplib, nop ),
1558 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1559 ( "helpful-errors", Opt_HelpfulErrors, nop ),
1560 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1561 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1564 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1565 fLangFlags :: [FlagSpec ExtensionFlag]
1567 ( "th", Opt_TemplateHaskell,
1568 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1569 ( "fi", Opt_ForeignFunctionInterface,
1570 deprecatedForExtension "ForeignFunctionInterface" ),
1571 ( "ffi", Opt_ForeignFunctionInterface,
1572 deprecatedForExtension "ForeignFunctionInterface" ),
1573 ( "arrows", Opt_Arrows,
1574 deprecatedForExtension "Arrows" ),
1575 ( "generics", Opt_Generics,
1576 deprecatedForExtension "Generics" ),
1577 ( "implicit-prelude", Opt_ImplicitPrelude,
1578 deprecatedForExtension "ImplicitPrelude" ),
1579 ( "bang-patterns", Opt_BangPatterns,
1580 deprecatedForExtension "BangPatterns" ),
1581 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1582 deprecatedForExtension "MonomorphismRestriction" ),
1583 ( "mono-pat-binds", Opt_MonoPatBinds,
1584 deprecatedForExtension "MonoPatBinds" ),
1585 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1586 deprecatedForExtension "ExtendedDefaultRules" ),
1587 ( "implicit-params", Opt_ImplicitParams,
1588 deprecatedForExtension "ImplicitParams" ),
1589 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1590 deprecatedForExtension "ScopedTypeVariables" ),
1591 ( "parr", Opt_ParallelArrays,
1592 deprecatedForExtension "ParallelArrays" ),
1593 ( "PArr", Opt_ParallelArrays,
1594 deprecatedForExtension "ParallelArrays" ),
1595 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1596 deprecatedForExtension "OverlappingInstances" ),
1597 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1598 deprecatedForExtension "UndecidableInstances" ),
1599 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1600 deprecatedForExtension "IncoherentInstances" )
1603 supportedLanguages :: [String]
1604 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1606 supportedExtensions :: [String]
1607 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1609 supportedLanguagesAndExtensions :: [String]
1610 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1612 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1613 languageFlags :: [FlagSpec Language]
1615 ( "Haskell98", Haskell98, nop ),
1616 ( "Haskell2010", Haskell2010, nop )
1619 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1620 xFlags :: [FlagSpec ExtensionFlag]
1622 ( "CPP", Opt_Cpp, nop ),
1623 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1624 ( "TupleSections", Opt_TupleSections, nop ),
1625 ( "PatternGuards", Opt_PatternGuards, nop ),
1626 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1627 ( "MagicHash", Opt_MagicHash, nop ),
1628 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1629 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1630 ( "KindSignatures", Opt_KindSignatures, nop ),
1631 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1632 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1633 ( "TransformListComp", Opt_TransformListComp, nop ),
1634 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1635 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1636 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1637 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1638 ( "Rank2Types", Opt_Rank2Types, nop ),
1639 ( "RankNTypes", Opt_RankNTypes, nop ),
1640 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1641 ( "TypeOperators", Opt_TypeOperators, nop ),
1642 ( "RecursiveDo", Opt_RecursiveDo,
1643 deprecatedForExtension "DoRec"),
1644 ( "DoRec", Opt_DoRec, nop ),
1645 ( "Arrows", Opt_Arrows, nop ),
1646 ( "ModalTypes", Opt_ModalTypes, nop ),
1647 ( "ParallelArrays", Opt_ParallelArrays, nop ),
1648 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1649 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1650 ( "Generics", Opt_Generics, nop ),
1651 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1652 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1653 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1654 ( "RecordPuns", Opt_RecordPuns,
1655 deprecatedForExtension "NamedFieldPuns" ),
1656 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1657 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1658 ( "GADTs", Opt_GADTs, nop ),
1659 ( "GADTSyntax", Opt_GADTSyntax, nop ),
1660 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1661 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1662 ( "BangPatterns", Opt_BangPatterns, nop ),
1663 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1664 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1665 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1666 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1667 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1668 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1669 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1670 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1671 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1672 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1673 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1674 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1675 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1676 \ turn_on -> if not turn_on
1677 then deprecate "You can't turn off RelaxedPolyRec any more"
1679 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1680 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1681 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1683 ( "PatternSignatures", Opt_ScopedTypeVariables,
1684 deprecatedForExtension "ScopedTypeVariables" ),
1686 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1687 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1688 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1689 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1690 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1691 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1692 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1693 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1694 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1695 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1696 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1697 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1698 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1699 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1700 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1701 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1702 ( "PackageImports", Opt_PackageImports, nop )
1705 defaultFlags :: [DynFlag]
1707 = [ Opt_AutoLinkPackages,
1708 Opt_ReadUserPackageConf,
1712 #if GHC_DEFAULT_NEW_CODEGEN
1718 Opt_PrintBindContents,
1723 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1724 -- The default -O0 options
1728 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1730 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1731 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1732 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1733 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1734 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1735 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1736 , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
1737 , (Opt_FunctionalDependencies, turnOn, Opt_MultiParamTypeClasses)
1739 , (Opt_ModalTypes, turnOn, Opt_RankNTypes)
1740 , (Opt_ModalTypes, turnOn, Opt_ExplicitForAll)
1741 --, (Opt_ModalTypes, turnOn, Opt_RebindableSyntax)
1742 , (Opt_ModalTypes, turnOff, Opt_MonomorphismRestriction)
1744 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1746 , (Opt_GADTs, turnOn, Opt_GADTSyntax)
1747 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1748 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1750 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1751 -- all over the place
1753 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1755 -- Record wild-cards implies field disambiguation
1756 -- Otherwise if you write (C {..}) you may well get
1757 -- stuff like " 'a' not in scope ", which is a bit silly
1758 -- if the compiler has just filled in field 'a' of constructor 'C'
1759 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1761 , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
1764 optLevelFlags :: [([Int], DynFlag)]
1766 = [ ([0], Opt_IgnoreInterfacePragmas)
1767 , ([0], Opt_OmitInterfacePragmas)
1769 , ([1,2], Opt_IgnoreAsserts)
1770 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1772 , ([1,2], Opt_DoEtaReduction)
1773 , ([1,2], Opt_CaseMerge)
1774 , ([1,2], Opt_Strictness)
1776 , ([1,2], Opt_FullLaziness)
1777 , ([1,2], Opt_Specialise)
1778 , ([1,2], Opt_FloatIn)
1780 , ([2], Opt_LiberateCase)
1781 , ([2], Opt_SpecConstr)
1782 , ([2], Opt_RegsGraph)
1784 -- , ([2], Opt_StaticArgumentTransformation)
1785 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1786 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1787 -- several improvements to the heuristics, and I'm concerned that without
1788 -- those changes SAT will interfere with some attempts to write "high
1789 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1790 -- this year. In particular, the version in HEAD lacks the tail call
1791 -- criterion, so many things that look like reasonable loops will be
1792 -- turned into functions with extra (unneccesary) thunk creation.
1794 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1795 -- This one is important for a tiresome reason:
1796 -- we want to make sure that the bindings for data
1797 -- constructors are eta-expanded. This is probably
1798 -- a good thing anyway, but it seems fragile.
1801 -- -----------------------------------------------------------------------------
1802 -- Standard sets of warning options
1804 standardWarnings :: [DynFlag]
1806 = [ Opt_WarnWarningsDeprecations,
1807 Opt_WarnDeprecatedFlags,
1808 Opt_WarnUnrecognisedPragmas,
1809 Opt_WarnOverlappingPatterns,
1810 Opt_WarnMissingFields,
1811 Opt_WarnMissingMethods,
1812 Opt_WarnDuplicateExports,
1813 Opt_WarnLazyUnliftedBindings,
1814 Opt_WarnDodgyForeignImports,
1815 Opt_WarnWrongDoBind,
1816 Opt_WarnAlternativeLayoutRuleTransitional
1819 minusWOpts :: [DynFlag]
1820 -- Things you get with -W
1822 = standardWarnings ++
1823 [ Opt_WarnUnusedBinds,
1824 Opt_WarnUnusedMatches,
1825 Opt_WarnUnusedImports,
1826 Opt_WarnIncompletePatterns,
1827 Opt_WarnDodgyExports,
1828 Opt_WarnDodgyImports
1831 minusWallOpts :: [DynFlag]
1832 -- Things you get with -Wall
1835 [ Opt_WarnTypeDefaults,
1836 Opt_WarnNameShadowing,
1837 Opt_WarnMissingSigs,
1840 Opt_WarnUnusedDoBind
1843 minuswRemovesOpts :: [DynFlag]
1844 -- minuswRemovesOpts should be every warning option
1848 Opt_WarnIncompletePatternsRecUpd,
1849 Opt_WarnIncompleteUniPatterns,
1850 Opt_WarnMonomorphism,
1851 Opt_WarnUnrecognisedPragmas,
1852 Opt_WarnAutoOrphans,
1853 Opt_WarnImplicitPrelude
1856 enableGlasgowExts :: DynP ()
1857 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1858 mapM_ setExtensionFlag glasgowExtsFlags
1860 disableGlasgowExts :: DynP ()
1861 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1862 mapM_ unSetExtensionFlag glasgowExtsFlags
1864 glasgowExtsFlags :: [ExtensionFlag]
1865 glasgowExtsFlags = [
1866 Opt_ForeignFunctionInterface
1867 , Opt_UnliftedFFITypes
1868 , Opt_ImplicitParams
1869 , Opt_ScopedTypeVariables
1871 , Opt_TypeSynonymInstances
1872 , Opt_StandaloneDeriving
1873 , Opt_DeriveDataTypeable
1875 , Opt_DeriveFoldable
1876 , Opt_DeriveTraversable
1877 , Opt_FlexibleContexts
1878 , Opt_FlexibleInstances
1879 , Opt_ConstrainedClassMethods
1880 , Opt_MultiParamTypeClasses
1881 , Opt_FunctionalDependencies
1883 , Opt_PolymorphicComponents
1884 , Opt_ExistentialQuantification
1886 , Opt_PostfixOperators
1888 , Opt_LiberalTypeSynonyms
1892 , Opt_ParallelListComp
1893 , Opt_EmptyDataDecls
1894 , Opt_KindSignatures
1895 , Opt_GeneralizedNewtypeDeriving ]
1898 -- Consult the RTS to find whether GHC itself has been built profiled
1899 -- If so, you can't use Template Haskell
1900 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1902 rtsIsProfiled :: Bool
1903 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1906 checkTemplateHaskellOk :: Bool -> DynP ()
1908 checkTemplateHaskellOk turn_on
1909 | turn_on && rtsIsProfiled
1910 = addErr "You can't use Template Haskell with a profiled compiler"
1914 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1915 -- so we simply say "ok". It doesn't matter because TH isn't
1916 -- available in stage 1 anyway.
1917 checkTemplateHaskellOk _ = return ()
1920 {- **********************************************************************
1922 DynFlags constructors
1924 %********************************************************************* -}
1926 type DynP = EwM (CmdLineP DynFlags)
1928 upd :: (DynFlags -> DynFlags) -> DynP ()
1929 upd f = liftEwM (do { dfs <- getCmdLineState
1930 ; putCmdLineState $! (f dfs) })
1932 --------------- Constructor functions for OptKind -----------------
1933 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1934 noArg fn = NoArg (upd fn)
1936 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1937 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1939 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1940 hasArg fn = HasArg (upd . fn)
1942 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1943 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1944 ; deprecate deprec })
1946 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1947 intSuffix fn = IntSuffix (\n -> upd (fn n))
1949 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1950 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1952 --------------------------
1953 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1954 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1955 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1957 --------------------------
1958 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1959 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1962 deps = [ if turn_on then setExtensionFlag d
1963 else unSetExtensionFlag d
1964 | (f', turn_on, d) <- impliedFlags, f' == f ]
1965 -- When you set f, set the ones it implies
1966 -- NB: use setExtensionFlag recursively, in case the implied flags
1967 -- implies further flags
1969 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1970 -- When you un-set f, however, we don't un-set the things it implies
1971 -- (except for -fno-glasgow-exts, which is treated specially)
1973 --------------------------
1974 alterSettings :: (Settings -> Settings) -> DynFlags -> DynFlags
1975 alterSettings f dflags = dflags { settings = f (settings dflags) }
1977 --------------------------
1978 setDumpFlag' :: DynFlag -> DynP ()
1979 setDumpFlag' dump_flag
1980 = do { setDynFlag dump_flag
1981 ; when want_recomp forceRecompile }
1983 -- Certain dumpy-things are really interested in what's going
1984 -- on during recompilation checking, so in those cases we
1985 -- don't want to turn it off.
1986 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1987 Opt_D_dump_hi_diffs]
1989 forceRecompile :: DynP ()
1990 -- Whenver we -ddump, force recompilation (by switching off the
1991 -- recompilation checker), else you don't see the dump! However,
1992 -- don't switch it off in --make mode, else *everything* gets
1993 -- recompiled which probably isn't what you want
1994 forceRecompile = do { dfs <- liftEwM getCmdLineState
1995 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1997 force_recomp dfs = isOneShot (ghcMode dfs)
1999 setVerboseCore2Core :: DynP ()
2000 setVerboseCore2Core = do forceRecompile
2001 setDynFlag Opt_D_verbose_core2core
2002 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
2005 setDumpSimplPhases :: String -> DynP ()
2006 setDumpSimplPhases s = do forceRecompile
2007 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
2009 spec = case s of { ('=' : s') -> s'; _ -> s }
2011 setVerbosity :: Maybe Int -> DynP ()
2012 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
2014 addCmdlineHCInclude :: String -> DynP ()
2015 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
2017 extraPkgConf_ :: FilePath -> DynP ()
2018 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
2020 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
2022 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
2024 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
2026 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
2028 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
2030 setPackageName :: String -> DynFlags -> DynFlags
2031 setPackageName p s = s{ thisPackage = stringToPackageId p }
2033 -- If we're linking a binary, then only targets that produce object
2034 -- code are allowed (requests for other target types are ignored).
2035 setTarget :: HscTarget -> DynP ()
2036 setTarget l = upd set
2039 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
2042 -- Changes the target only if we're compiling object code. This is
2043 -- used by -fasm and -fllvm, which switch from one to the other, but
2044 -- not from bytecode to object-code. The idea is that -fasm/-fllvm
2045 -- can be safely used in an OPTIONS_GHC pragma.
2046 setObjTarget :: HscTarget -> DynP ()
2047 setObjTarget l = upd set
2050 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
2053 setOptLevel :: Int -> DynFlags -> DynFlags
2054 setOptLevel n dflags
2055 | hscTarget dflags == HscInterpreted && n > 0
2057 -- not in IO any more, oh well:
2058 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
2060 = updOptLevel n dflags
2063 -- -Odph is equivalent to
2065 -- -O2 optimise as much as possible
2066 -- -fmax-simplifier-iterations20 this is necessary sometimes
2067 -- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
2069 setDPHOpt :: DynFlags -> DynFlags
2070 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
2074 -- Determines the package used by the vectoriser for the symbols of the vectorised code.
2075 -- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
2076 -- vectoriser cannot be used.
2078 data DPHBackend = DPHPar -- "dph-par"
2079 | DPHSeq -- "dph-seq"
2080 | DPHThis -- the currently compiled package
2081 | DPHNone -- no DPH library available
2082 deriving(Eq, Ord, Enum, Show)
2084 setDPHBackend :: DPHBackend -> DynP ()
2085 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
2087 -- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
2089 dphPackageMaybe :: DynFlags -> Maybe PackageId
2090 dphPackageMaybe dflags
2091 = case dphBackend dflags of
2092 DPHPar -> Just dphParPackageId
2093 DPHSeq -> Just dphSeqPackageId
2094 DPHThis -> Just (thisPackage dflags)
2097 setMainIs :: String -> DynP ()
2099 | not (null main_fn) && isLower (head main_fn)
2100 -- The arg looked like "Foo.Bar.baz"
2101 = upd $ \d -> d{ mainFunIs = Just main_fn,
2102 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2104 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2105 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2107 | otherwise -- The arg looked like "baz"
2108 = upd $ \d -> d{ mainFunIs = Just arg }
2110 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2112 -----------------------------------------------------------------------------
2113 -- Paths & Libraries
2115 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2117 -- -i on its own deletes the import paths
2118 addImportPath "" = upd (\s -> s{importPaths = []})
2119 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2123 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2126 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2128 addFrameworkPath p =
2129 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2131 #ifndef mingw32_TARGET_OS
2132 split_marker :: Char
2133 split_marker = ':' -- not configurable (ToDo)
2136 splitPathList :: String -> [String]
2137 splitPathList s = filter notNull (splitUp s)
2138 -- empty paths are ignored: there might be a trailing
2139 -- ':' in the initial list, for example. Empty paths can
2140 -- cause confusion when they are translated into -I options
2141 -- for passing to gcc.
2143 #ifndef mingw32_TARGET_OS
2144 splitUp xs = split split_marker xs
2146 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2148 -- That is, if "foo:bar:baz" is used, this interpreted as
2149 -- consisting of three entries, 'foo', 'bar', 'baz'.
2150 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2151 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2153 -- Notice that no attempt is made to fully replace the 'standard'
2154 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2155 -- that this will cause too much breakage for users & ':' will
2156 -- work fine even with DOS paths, if you're not insisting on being silly.
2159 splitUp (x:':':div:xs) | div `elem` dir_markers
2160 = ((x:':':div:p): splitUp rs)
2162 (p,rs) = findNextPath xs
2163 -- we used to check for existence of the path here, but that
2164 -- required the IO monad to be threaded through the command-line
2165 -- parser which is quite inconvenient. The
2166 splitUp xs = cons p (splitUp rs)
2168 (p,rs) = findNextPath xs
2173 -- will be called either when we've consumed nought or the
2174 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2175 -- finding the next split marker.
2177 case break (`elem` split_markers) xs of
2178 (p, _:ds) -> (p, ds)
2181 split_markers :: [Char]
2182 split_markers = [':', ';']
2184 dir_markers :: [Char]
2185 dir_markers = ['/', '\\']
2188 -- -----------------------------------------------------------------------------
2189 -- tmpDir, where we store temporary files.
2191 setTmpDir :: FilePath -> DynFlags -> DynFlags
2192 setTmpDir dir = alterSettings (\s -> s { sTmpDir = normalise dir })
2193 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2194 -- seem necessary now --SDM 7/2/2008
2196 -----------------------------------------------------------------------------
2199 setRtsOpts :: String -> DynP ()
2200 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2202 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2203 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2205 -----------------------------------------------------------------------------
2208 setOptHpcDir :: String -> DynP ()
2209 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2211 -----------------------------------------------------------------------------
2212 -- Via-C compilation stuff
2214 -- There are some options that we need to pass to gcc when compiling
2215 -- Haskell code via C, but are only supported by recent versions of
2216 -- gcc. The configure script decides which of these options we need,
2217 -- and puts them in the "settings" file in $topdir. The advantage of
2218 -- having these in a separate file is that the file can be created at
2219 -- install-time depending on the available gcc version, and even
2220 -- re-generated later if gcc is upgraded.
2222 -- The options below are not dependent on the version of gcc, only the
2225 machdepCCOpts :: DynFlags -> [String] -- flags for all C compilations
2226 machdepCCOpts _ = cCcOpts ++ machdepCCOpts'
2228 machdepCCOpts' :: [String] -- flags for all C compilations
2230 #if alpha_TARGET_ARCH
2232 #ifdef HAVE_THREADED_RTS_SUPPORT
2236 -- For now, to suppress the gcc warning "call-clobbered
2237 -- register used for global register variable", we simply
2238 -- disable all warnings altogether using the -w flag. Oh well.
2240 #elif hppa_TARGET_ARCH
2241 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2242 -- (very nice, but too bad the HP /usr/include files don't agree.)
2243 = ["-D_HPUX_SOURCE"]
2245 #elif i386_TARGET_ARCH
2246 -- -fno-defer-pop : basically the same game as for m68k
2248 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2249 -- the fp (%ebp) for our register maps.
2250 = if opt_Static then ["-DDONT_WANT_WIN32_DLL_SUPPORT"] else []
2256 picCCOpts :: DynFlags -> [String]
2258 #if darwin_TARGET_OS
2259 -- Apple prefers to do things the other way round.
2260 -- PIC is on by default.
2261 -- -mdynamic-no-pic:
2262 -- Turn off PIC code generation.
2264 -- Don't generate "common" symbols - these are unwanted
2265 -- in dynamic libraries.
2268 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2270 = ["-mdynamic-no-pic"]
2271 #elif mingw32_TARGET_OS
2272 -- no -fPIC for Windows
2274 = ["-U __PIC__","-D__PIC__"]
2278 -- we need -fPIC for C files when we are compiling with -dynamic,
2279 -- otherwise things like stub.c files don't get compiled
2280 -- correctly. They need to reference data in the Haskell
2281 -- objects, but can't without -fPIC. See
2282 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2283 | opt_PIC || not opt_Static
2284 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2289 -- -----------------------------------------------------------------------------
2293 can_split = cSupportsSplitObjs == "YES"
2295 -- -----------------------------------------------------------------------------
2298 compilerInfo :: DynFlags -> [(String, String)]
2300 = -- We always make "Project name" be first to keep parsing in
2301 -- other languages simple, i.e. when looking for other fields,
2302 -- you don't have to worry whether there is a leading '[' or not
2303 ("Project name", cProjectName)
2304 -- Next come the settings, so anything else can be overridden
2305 -- in the settings file (as "lookup" uses the first match for the
2307 : rawSettings dflags
2308 ++ [("Project version", cProjectVersion),
2309 ("Booter version", cBooterVersion),
2311 ("Build platform", cBuildPlatformString),
2312 ("Host platform", cHostPlatformString),
2313 ("Target platform", cTargetPlatformString),
2314 ("Have interpreter", cGhcWithInterpreter),
2315 ("Object splitting supported", cSupportsSplitObjs),
2316 ("Have native code generator", cGhcWithNativeCodeGen),
2317 ("Support SMP", cGhcWithSMP),
2318 ("Unregisterised", cGhcUnregisterised),
2319 ("Tables next to code", cGhcEnableTablesNextToCode),
2320 ("RTS ways", cGhcRTSWays),
2321 ("Leading underscore", cLeadingUnderscore),
2322 ("Debug on", show debugIsOn),
2323 ("LibDir", topDir dflags),
2324 ("Global Package DB", systemPackageConfig dflags),
2325 ("C compiler flags", show cCcOpts),
2326 ("Gcc Linker flags", show cGccLinkerOpts),
2327 ("Ld Linker flags", show cLdLinkerOpts)
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