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 (does whatever CoqPass.hs says)
194 | Opt_D_coqpass -- run the core-to-string coqPass and dumps the result
195 | Opt_D_dump_coqpass -- dumps the output of the core-to-core coqPass
197 | Opt_WarnIsError -- -Werror; makes warnings fatal
198 | Opt_WarnDuplicateExports
200 | Opt_WarnImplicitPrelude
201 | Opt_WarnIncompletePatterns
202 | Opt_WarnIncompleteUniPatterns
203 | Opt_WarnIncompletePatternsRecUpd
204 | Opt_WarnMissingFields
205 | Opt_WarnMissingImportList
206 | Opt_WarnMissingMethods
207 | Opt_WarnMissingSigs
208 | Opt_WarnMissingLocalSigs
209 | Opt_WarnNameShadowing
210 | Opt_WarnOverlappingPatterns
211 | Opt_WarnTypeDefaults
212 | Opt_WarnMonomorphism
213 | Opt_WarnUnusedBinds
214 | Opt_WarnUnusedImports
215 | Opt_WarnUnusedMatches
216 | Opt_WarnWarningsDeprecations
217 | Opt_WarnDeprecatedFlags
218 | Opt_WarnDodgyExports
219 | Opt_WarnDodgyImports
221 | Opt_WarnAutoOrphans
224 | Opt_WarnUnrecognisedPragmas
225 | Opt_WarnDodgyForeignImports
226 | Opt_WarnLazyUnliftedBindings
227 | Opt_WarnUnusedDoBind
228 | Opt_WarnWrongDoBind
229 | Opt_WarnAlternativeLayoutRuleTransitional
231 | Opt_PrintExplicitForalls
238 | Opt_StaticArgumentTransformation
242 | Opt_DoLambdaEtaExpansion
246 | Opt_UnboxStrictFields
247 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
249 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
251 | Opt_RegsGraph -- do graph coloring register allocation
252 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
255 | Opt_IgnoreInterfacePragmas
256 | Opt_OmitInterfacePragmas
257 | Opt_ExposeAllUnfoldings
260 | Opt_AutoSccsOnAllToplevs
261 | Opt_AutoSccsOnExportedToplevs
262 | Opt_AutoSccsOnIndividualCafs
268 | Opt_ExcessPrecision
269 | Opt_EagerBlackHoling
270 | Opt_ReadUserPackageConf
274 | Opt_HideAllPackages
275 | Opt_PrintBindResult
279 | Opt_BreakOnException
281 | Opt_PrintEvldWithShow
282 | Opt_PrintBindContents
285 | Opt_EmitExternalCore
287 | Opt_BuildingCabalPackage
295 | Opt_ConvertToZipCfgAndBack
296 | Opt_AutoLinkPackages
297 | Opt_ImplicitImportQualified
305 | Opt_KeepRawTokenStream
310 data Language = Haskell98 | Haskell2010
314 | Opt_OverlappingInstances
315 | Opt_UndecidableInstances
316 | Opt_IncoherentInstances
317 | Opt_MonomorphismRestriction
320 | Opt_RelaxedPolyRec -- Deprecated
321 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
322 | Opt_ForeignFunctionInterface
323 | Opt_UnliftedFFITypes
324 | Opt_GHCForeignImportPrim
325 | Opt_ParallelArrays -- Syntactic support for parallel arrays
326 | Opt_Arrows -- Arrow-notation syntax
327 | Opt_ModalTypes -- Heterogeneous Metaprogramming (modal types, brackets, escape, CSP)
328 | Opt_TemplateHaskell
331 | Opt_Generics -- "Derivable type classes"
332 | Opt_ImplicitPrelude
333 | Opt_ScopedTypeVariables
337 | Opt_OverloadedStrings
338 | Opt_DisambiguateRecordFields
339 | Opt_RecordWildCards
345 | Opt_DoAndIfThenElse
346 | Opt_RebindableSyntax
348 | Opt_StandaloneDeriving
349 | Opt_DeriveDataTypeable
351 | Opt_DeriveTraversable
354 | Opt_TypeSynonymInstances
355 | Opt_FlexibleContexts
356 | Opt_FlexibleInstances
357 | Opt_ConstrainedClassMethods
358 | Opt_MultiParamTypeClasses
359 | Opt_FunctionalDependencies
361 | Opt_PolymorphicComponents
362 | Opt_ExistentialQuantification
366 | Opt_ParallelListComp
367 | Opt_TransformListComp
368 | Opt_GeneralizedNewtypeDeriving
371 | Opt_PostfixOperators
374 | Opt_LiberalTypeSynonyms
377 | Opt_ImpredicativeTypes
381 | Opt_AlternativeLayoutRule
382 | Opt_AlternativeLayoutRuleTransitional
383 | Opt_DatatypeContexts
384 | Opt_NondecreasingIndentation
388 -- | Contains not only a collection of 'DynFlag's but also a plethora of
389 -- information relating to the compilation of a single file or GHC session
390 data DynFlags = DynFlags {
393 hscTarget :: HscTarget,
394 hscOutName :: String, -- ^ Name of the output file
395 extCoreName :: String, -- ^ Name of the .hcr output file
396 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
397 optLevel :: Int, -- ^ Optimisation level
398 simplPhases :: Int, -- ^ Number of simplifier phases
399 maxSimplIterations :: Int, -- ^ Max simplifier iterations
400 shouldDumpSimplPhase :: Maybe String,
401 ruleCheck :: Maybe String,
402 strictnessBefore :: [Int], -- ^ Additional demand analysis
404 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
405 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
406 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
407 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
408 -- See CoreMonad.FloatOutSwitches
410 #ifndef OMIT_NATIVE_CODEGEN
411 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
413 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
414 importPaths :: [FilePath],
416 mainFunIs :: Maybe String,
417 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
419 dphBackend :: DPHBackend,
421 thisPackage :: PackageId, -- ^ name of package currently being compiled
424 ways :: [Way], -- ^ Way flags from the command line
425 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
426 rtsBuildTag :: String, -- ^ The RTS \"way\"
428 -- For object splitting
429 splitInfo :: Maybe (String,Int),
432 objectDir :: Maybe String,
433 dylibInstallName :: Maybe String,
434 hiDir :: Maybe String,
435 stubDir :: Maybe String,
441 outputFile :: Maybe String,
442 outputHi :: Maybe String,
443 dynLibLoader :: DynLibLoader,
445 -- | This is set by 'DriverPipeline.runPipeline' based on where
446 -- its output is going.
447 dumpPrefix :: Maybe FilePath,
449 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
450 -- Set by @-ddump-file-prefix@
451 dumpPrefixForce :: Maybe FilePath,
453 includePaths :: [String],
454 libraryPaths :: [String],
455 frameworkPaths :: [String], -- used on darwin only
456 cmdlineFrameworks :: [String], -- ditto
458 rtsOpts :: Maybe String,
459 rtsOptsEnabled :: RtsOptsEnabled,
461 hpcDir :: String, -- ^ Path to store the .mix files
463 settings :: Settings,
466 depMakefile :: FilePath,
467 depIncludePkgDeps :: Bool,
468 depExcludeMods :: [ModuleName],
469 depSuffixes :: [String],
472 extraPkgConfs :: [FilePath],
473 -- ^ The @-package-conf@ flags given on the command line, in the order
476 packageFlags :: [PackageFlag],
477 -- ^ The @-package@ and @-hide-package@ flags from the command-line
480 -- NB. do not modify this field, it is calculated by
481 -- Packages.initPackages and Packages.updatePackages.
482 pkgDatabase :: Maybe [PackageConfig],
483 pkgState :: PackageState,
486 -- These have to be IORefs, because the defaultCleanupHandler needs to
487 -- know what to clean when an exception happens
488 filesToClean :: IORef [FilePath],
489 dirsToClean :: IORef (Map FilePath FilePath),
493 -- Don't change this without updating extensionFlags:
494 language :: Maybe Language,
495 -- Don't change this without updating extensionFlags:
496 extensions :: [OnOff ExtensionFlag],
497 -- extensionFlags should always be equal to
498 -- flattenExtensionFlags language extensions
499 extensionFlags :: [ExtensionFlag],
501 -- | Message output action: use "ErrUtils" instead of this if you can
502 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
504 haddockOptions :: Maybe String
507 data Settings = Settings {
508 sGhcUsagePath :: FilePath, -- Filled in by SysTools
509 sGhciUsagePath :: FilePath, -- ditto
511 sTmpDir :: String, -- no trailing '/'
512 -- You shouldn't need to look things up in rawSettings directly.
513 -- They should have their own fields instead.
514 sRawSettings :: [(String, String)],
515 sExtraGccViaCFlags :: [String],
516 sSystemPackageConfig :: FilePath,
517 -- commands for particular phases
519 sPgm_P :: (String,[Option]),
521 sPgm_c :: (String,[Option]),
522 sPgm_s :: (String,[Option]),
523 sPgm_a :: (String,[Option]),
524 sPgm_l :: (String,[Option]),
525 sPgm_dll :: (String,[Option]),
527 sPgm_sysman :: String,
528 sPgm_windres :: String,
529 sPgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
530 sPgm_lc :: (String,[Option]), -- LLVM: llc static compiler
531 -- options for particular phases
539 sOpt_windres :: [String],
540 sOpt_lo :: [String], -- LLVM: llvm optimiser
541 sOpt_lc :: [String] -- LLVM: llc static compiler
545 ghcUsagePath :: DynFlags -> FilePath
546 ghcUsagePath dflags = sGhcUsagePath (settings dflags)
547 ghciUsagePath :: DynFlags -> FilePath
548 ghciUsagePath dflags = sGhciUsagePath (settings dflags)
549 topDir :: DynFlags -> FilePath
550 topDir dflags = sTopDir (settings dflags)
551 tmpDir :: DynFlags -> String
552 tmpDir dflags = sTmpDir (settings dflags)
553 rawSettings :: DynFlags -> [(String, String)]
554 rawSettings dflags = sRawSettings (settings dflags)
555 extraGccViaCFlags :: DynFlags -> [String]
556 extraGccViaCFlags dflags = sExtraGccViaCFlags (settings dflags)
557 systemPackageConfig :: DynFlags -> FilePath
558 systemPackageConfig dflags = sSystemPackageConfig (settings dflags)
559 pgm_L :: DynFlags -> String
560 pgm_L dflags = sPgm_L (settings dflags)
561 pgm_P :: DynFlags -> (String,[Option])
562 pgm_P dflags = sPgm_P (settings dflags)
563 pgm_F :: DynFlags -> String
564 pgm_F dflags = sPgm_F (settings dflags)
565 pgm_c :: DynFlags -> (String,[Option])
566 pgm_c dflags = sPgm_c (settings dflags)
567 pgm_s :: DynFlags -> (String,[Option])
568 pgm_s dflags = sPgm_s (settings dflags)
569 pgm_a :: DynFlags -> (String,[Option])
570 pgm_a dflags = sPgm_a (settings dflags)
571 pgm_l :: DynFlags -> (String,[Option])
572 pgm_l dflags = sPgm_l (settings dflags)
573 pgm_dll :: DynFlags -> (String,[Option])
574 pgm_dll dflags = sPgm_dll (settings dflags)
575 pgm_T :: DynFlags -> String
576 pgm_T dflags = sPgm_T (settings dflags)
577 pgm_sysman :: DynFlags -> String
578 pgm_sysman dflags = sPgm_sysman (settings dflags)
579 pgm_windres :: DynFlags -> String
580 pgm_windres dflags = sPgm_windres (settings dflags)
581 pgm_lo :: DynFlags -> (String,[Option])
582 pgm_lo dflags = sPgm_lo (settings dflags)
583 pgm_lc :: DynFlags -> (String,[Option])
584 pgm_lc dflags = sPgm_lc (settings dflags)
585 opt_L :: DynFlags -> [String]
586 opt_L dflags = sOpt_L (settings dflags)
587 opt_P :: DynFlags -> [String]
588 opt_P dflags = sOpt_P (settings dflags)
589 opt_F :: DynFlags -> [String]
590 opt_F dflags = sOpt_F (settings dflags)
591 opt_c :: DynFlags -> [String]
592 opt_c dflags = sOpt_c (settings dflags)
593 opt_m :: DynFlags -> [String]
594 opt_m dflags = sOpt_m (settings dflags)
595 opt_a :: DynFlags -> [String]
596 opt_a dflags = sOpt_a (settings dflags)
597 opt_l :: DynFlags -> [String]
598 opt_l dflags = sOpt_l (settings dflags)
599 opt_windres :: DynFlags -> [String]
600 opt_windres dflags = sOpt_windres (settings dflags)
601 opt_lo :: DynFlags -> [String]
602 opt_lo dflags = sOpt_lo (settings dflags)
603 opt_lc :: DynFlags -> [String]
604 opt_lc dflags = sOpt_lc (settings dflags)
606 wayNames :: DynFlags -> [WayName]
607 wayNames = map wayName . ways
609 -- | The target code type of the compilation (if any).
611 -- Whenever you change the target, also make sure to set 'ghcLink' to
612 -- something sensible.
614 -- 'HscNothing' can be used to avoid generating any output, however, note
617 -- * This will not run the desugaring step, thus no warnings generated in
618 -- this step will be output. In particular, this includes warnings related
619 -- to pattern matching. You can run the desugarer manually using
620 -- 'GHC.desugarModule'.
622 -- * If a program uses Template Haskell the typechecker may try to run code
623 -- from an imported module. This will fail if no code has been generated
624 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
625 -- whether this might be the case and choose to either switch to a
626 -- different target or avoid typechecking such modules. (The latter may
627 -- preferable for security reasons.)
630 = HscC -- ^ Generate C code.
631 | HscAsm -- ^ Generate assembly using the native code generator.
632 | HscLlvm -- ^ Generate assembly using the llvm code generator.
633 | HscJava -- ^ Generate Java bytecode.
634 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
635 | HscNothing -- ^ Don't generate any code. See notes above.
638 -- | Will this target result in an object file on the disk?
639 isObjectTarget :: HscTarget -> Bool
640 isObjectTarget HscC = True
641 isObjectTarget HscAsm = True
642 isObjectTarget HscLlvm = True
643 isObjectTarget _ = False
645 -- | The 'GhcMode' tells us whether we're doing multi-module
646 -- compilation (controlled via the "GHC" API) or one-shot
647 -- (single-module) compilation. This makes a difference primarily to
648 -- the "Finder": in one-shot mode we look for interface files for
649 -- imported modules, but in multi-module mode we look for source files
650 -- in order to check whether they need to be recompiled.
652 = CompManager -- ^ @\-\-make@, GHCi, etc.
653 | OneShot -- ^ @ghc -c Foo.hs@
654 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
657 instance Outputable GhcMode where
658 ppr CompManager = ptext (sLit "CompManager")
659 ppr OneShot = ptext (sLit "OneShot")
660 ppr MkDepend = ptext (sLit "MkDepend")
662 isOneShot :: GhcMode -> Bool
663 isOneShot OneShot = True
664 isOneShot _other = False
666 -- | What to do in the link step, if there is one.
668 = NoLink -- ^ Don't link at all
669 | LinkBinary -- ^ Link object code into a binary
670 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
671 -- bytecode and object code).
672 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
675 isNoLink :: GhcLink -> Bool
676 isNoLink NoLink = True
679 -- Is it worth evaluating this Bool and caching it in the DynFlags value
680 -- during initDynFlags?
681 doingTickyProfiling :: DynFlags -> Bool
682 doingTickyProfiling _ = opt_Ticky
683 -- XXX -ticky is a static flag, because it implies -debug which is also
684 -- static. If the way flags were made dynamic, we could fix this.
687 = ExposePackage String
688 | ExposePackageId String
690 | IgnorePackage String
693 defaultHscTarget :: HscTarget
694 defaultHscTarget = defaultObjectTarget
696 -- | The 'HscTarget' value corresponding to the default way to create
697 -- object files on the current platform.
698 defaultObjectTarget :: HscTarget
700 | cGhcWithNativeCodeGen == "YES" = HscAsm
708 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
711 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
712 initDynFlags :: DynFlags -> IO DynFlags
713 initDynFlags dflags = do
714 -- someday these will be dynamic flags
715 ways <- readIORef v_Ways
716 refFilesToClean <- newIORef []
717 refDirsToClean <- newIORef Map.empty
720 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
721 rtsBuildTag = mkBuildTag ways,
722 filesToClean = refFilesToClean,
723 dirsToClean = refDirsToClean
726 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
727 -- and must be fully initialized by 'GHC.newSession' first.
728 defaultDynFlags :: Settings -> DynFlags
729 defaultDynFlags mySettings =
731 ghcMode = CompManager,
732 ghcLink = LinkBinary,
733 hscTarget = defaultHscTarget,
739 maxSimplIterations = 4,
740 shouldDumpSimplPhase = Nothing,
742 specConstrThreshold = Just 200,
743 specConstrCount = Just 3,
744 liberateCaseThreshold = Just 200,
745 floatLamArgs = Just 0, -- Default: float only if no fvs
746 strictnessBefore = [],
748 #ifndef OMIT_NATIVE_CODEGEN
749 targetPlatform = defaultTargetPlatform,
751 cmdlineHcIncludes = [],
755 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
757 dphBackend = DPHNone,
759 thisPackage = mainPackageId,
762 dylibInstallName = Nothing,
766 objectSuf = phaseInputExt StopLn,
767 hcSuf = phaseInputExt HCc,
770 outputFile = Nothing,
772 dynLibLoader = SystemDependent,
773 dumpPrefix = Nothing,
774 dumpPrefixForce = Nothing,
778 cmdlineFrameworks = [],
780 rtsOptsEnabled = RtsOptsSafeOnly,
786 pkgDatabase = Nothing,
787 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
788 ways = panic "defaultDynFlags: No ways",
789 buildTag = panic "defaultDynFlags: No buildTag",
790 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
792 settings = mySettings,
794 depMakefile = "Makefile",
795 depIncludePkgDeps = False,
798 -- end of ghc -M values
799 filesToClean = panic "defaultDynFlags: No filesToClean",
800 dirsToClean = panic "defaultDynFlags: No dirsToClean",
801 haddockOptions = Nothing,
802 flags = defaultFlags,
805 extensionFlags = flattenExtensionFlags Nothing [],
807 log_action = \severity srcSpan style msg ->
809 SevOutput -> printOutput (msg style)
810 SevInfo -> printErrs (msg style)
811 SevFatal -> printErrs (msg style)
814 printErrs ((mkLocMessage srcSpan msg) style)
815 -- careful (#2302): printErrs prints in UTF-8, whereas
816 -- converting to string first and using hPutStr would
817 -- just emit the low 8 bits of each unicode char.
821 Note [Verbosity levels]
822 ~~~~~~~~~~~~~~~~~~~~~~~
823 0 | print errors & warnings only
824 1 | minimal verbosity: print "compiling M ... done." for each module.
825 2 | equivalent to -dshow-passes
826 3 | equivalent to existing "ghc -v"
827 4 | "ghc -v -ddump-most"
828 5 | "ghc -v -ddump-all"
834 -- OnOffs accumulate in reverse order, so we use foldr in order to
835 -- process them in the right order
836 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
838 flattenExtensionFlags ml = foldr f defaultExtensionFlags
839 where f (On f) flags = f : delete f flags
840 f (Off f) flags = delete f flags
841 defaultExtensionFlags = languageExtensions ml
843 languageExtensions :: Maybe Language -> [ExtensionFlag]
845 languageExtensions Nothing
846 -- Nothing => the default case
847 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
848 -- behaviour the default, to see if anyone notices
850 -- In due course I'd like Opt_MonoLocalBinds to be on by default
851 -- But NB it's implied by GADTs etc
852 -- SLPJ September 2010
853 : Opt_NondecreasingIndentation -- This has been on by default for some time
854 : languageExtensions (Just Haskell2010)
856 languageExtensions (Just Haskell98)
857 = [Opt_ImplicitPrelude,
858 Opt_MonomorphismRestriction,
860 Opt_DatatypeContexts,
861 Opt_NondecreasingIndentation
862 -- strictly speaking non-standard, but we always had this
863 -- on implicitly before the option was added in 7.1, and
864 -- turning it off breaks code, so we're keeping it on for
865 -- backwards compatibility. Cabal uses -XHaskell98 by
866 -- default unless you specify another language.
869 languageExtensions (Just Haskell2010)
870 = [Opt_ImplicitPrelude,
871 Opt_MonomorphismRestriction,
872 Opt_DatatypeContexts,
874 Opt_ForeignFunctionInterface,
879 -- | Test whether a 'DynFlag' is set
880 dopt :: DynFlag -> DynFlags -> Bool
881 dopt f dflags = f `elem` (flags dflags)
884 dopt_set :: DynFlags -> DynFlag -> DynFlags
885 dopt_set dfs f = dfs{ flags = f : flags dfs }
887 -- | Unset a 'DynFlag'
888 dopt_unset :: DynFlags -> DynFlag -> DynFlags
889 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
891 -- | Test whether a 'ExtensionFlag' is set
892 xopt :: ExtensionFlag -> DynFlags -> Bool
893 xopt f dflags = f `elem` extensionFlags dflags
895 -- | Set a 'ExtensionFlag'
896 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
898 = let onoffs = On f : extensions dfs
899 in dfs { extensions = onoffs,
900 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
902 -- | Unset a 'ExtensionFlag'
903 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
905 = let onoffs = Off f : extensions dfs
906 in dfs { extensions = onoffs,
907 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
909 setLanguage :: Language -> DynP ()
910 setLanguage l = upd f
911 where f dfs = let mLang = Just l
912 oneoffs = extensions dfs
915 extensionFlags = flattenExtensionFlags mLang oneoffs
918 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
919 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
920 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
921 -> [a] -- ^ Correctly ordered extracted options
922 getOpts dflags opts = reverse (opts dflags)
923 -- We add to the options from the front, so we need to reverse the list
925 -- | Gets the verbosity flag for the current verbosity level. This is fed to
926 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
927 getVerbFlags :: DynFlags -> [String]
929 | verbosity dflags >= 4 = ["-v"]
932 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
933 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
934 setPgmP, addOptl, addOptP,
935 addCmdlineFramework, addHaddockOpts
936 :: String -> DynFlags -> DynFlags
937 setOutputFile, setOutputHi, setDumpPrefixForce
938 :: Maybe String -> DynFlags -> DynFlags
940 setObjectDir f d = d{ objectDir = Just f}
941 setHiDir f d = d{ hiDir = Just f}
942 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
943 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
944 -- \#included from the .hc file when compiling via C (i.e. unregisterised
946 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
947 setDylibInstallName f d = d{ dylibInstallName = Just f}
949 setObjectSuf f d = d{ objectSuf = f}
950 setHiSuf f d = d{ hiSuf = f}
951 setHcSuf f d = d{ hcSuf = f}
953 setOutputFile f d = d{ outputFile = f}
954 setOutputHi f d = d{ outputHi = f}
956 parseDynLibLoaderMode f d =
958 ("deploy", "") -> d{ dynLibLoader = Deployable }
959 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
960 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
962 setDumpPrefixForce f d = d { dumpPrefixForce = f}
964 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
965 -- Config.hs should really use Option.
966 setPgmP f = let (pgm:args) = words f in alterSettings (\s -> s { sPgm_P = (pgm, map Option args)})
967 addOptl f = alterSettings (\s -> s { sOpt_l = f : sOpt_l s})
968 addOptP f = alterSettings (\s -> s { sOpt_P = f : sOpt_P s})
971 setDepMakefile :: FilePath -> DynFlags -> DynFlags
972 setDepMakefile f d = d { depMakefile = deOptDep f }
974 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
975 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
977 addDepExcludeMod :: String -> DynFlags -> DynFlags
979 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
981 addDepSuffix :: FilePath -> DynFlags -> DynFlags
982 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
985 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
986 -- we need to strip the "-optdep" off of the arg
987 deOptDep :: String -> String
988 deOptDep x = case stripPrefix "-optdep" x of
992 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
994 addHaddockOpts f d = d{ haddockOptions = Just f}
996 -- -----------------------------------------------------------------------------
997 -- Command-line options
999 -- | When invoking external tools as part of the compilation pipeline, we
1000 -- pass these a sequence of options on the command-line. Rather than
1001 -- just using a list of Strings, we use a type that allows us to distinguish
1002 -- between filepaths and 'other stuff'. The reason for this is that
1003 -- this type gives us a handle on transforming filenames, and filenames only,
1004 -- to whatever format they're expected to be on a particular platform.
1006 = FileOption -- an entry that _contains_ filename(s) / filepaths.
1007 String -- a non-filepath prefix that shouldn't be
1008 -- transformed (e.g., "/out=")
1009 String -- the filepath/filename portion
1012 showOpt :: Option -> String
1013 showOpt (FileOption pre f) = pre ++ f
1014 showOpt (Option s) = s
1016 -----------------------------------------------------------------------------
1017 -- Setting the optimisation level
1019 updOptLevel :: Int -> DynFlags -> DynFlags
1020 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
1022 = dfs2{ optLevel = final_n }
1024 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
1025 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
1026 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
1028 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
1029 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
1031 -- -----------------------------------------------------------------------------
1032 -- StgToDo: abstraction of stg-to-stg passes to run.
1035 = StgDoMassageForProfiling -- should be (next to) last
1036 -- There's also setStgVarInfo, but its absolute "lastness"
1037 -- is so critical that it is hardwired in (no flag).
1040 getStgToDo :: DynFlags -> [StgToDo]
1044 stg_stats = dopt Opt_StgStats dflags
1046 todo1 = if stg_stats then [D_stg_stats] else []
1048 todo2 | WayProf `elem` wayNames dflags
1049 = StgDoMassageForProfiling : todo1
1053 {- **********************************************************************
1057 %********************************************************************* -}
1059 -- -----------------------------------------------------------------------------
1060 -- Parsing the dynamic flags.
1062 -- | Parse dynamic flags from a list of command line arguments. Returns the
1063 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1064 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1065 -- flags or missing arguments).
1066 parseDynamicFlags :: Monad m =>
1067 DynFlags -> [Located String]
1068 -> m (DynFlags, [Located String], [Located String])
1069 -- ^ Updated 'DynFlags', left-over arguments, and
1070 -- list of warnings.
1071 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1073 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1074 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1075 parseDynamicNoPackageFlags :: Monad m =>
1076 DynFlags -> [Located String]
1077 -> m (DynFlags, [Located String], [Located String])
1078 -- ^ Updated 'DynFlags', left-over arguments, and
1079 -- list of warnings.
1080 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1082 parseDynamicFlags_ :: Monad m =>
1083 DynFlags -> [Located String] -> Bool
1084 -> m (DynFlags, [Located String], [Located String])
1085 parseDynamicFlags_ dflags0 args pkg_flags = do
1086 -- XXX Legacy support code
1087 -- We used to accept things like
1088 -- optdep-f -optdepdepend
1089 -- optdep-f -optdep depend
1090 -- optdep -f -optdepdepend
1091 -- optdep -f -optdep depend
1092 -- but the spaces trip up proper argument handling. So get rid of them.
1093 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1094 f (x : xs) = x : f xs
1098 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1099 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1100 | otherwise = dynamic_flags
1102 let ((leftover, errs, warns), dflags1)
1103 = runCmdLine (processArgs flag_spec args') dflags0
1104 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1106 let (pic_warns, dflags2)
1107 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1108 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1109 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1110 ++ "dynamic on this platform;\n ignoring -fllvm"],
1111 dflags1{ hscTarget = HscAsm })
1113 | otherwise = ([], dflags1)
1115 return (dflags2, leftover, pic_warns ++ warns)
1118 {- **********************************************************************
1120 DynFlags specifications
1122 %********************************************************************* -}
1124 allFlags :: [String]
1125 allFlags = map ('-':) $
1126 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1127 map ("fno-"++) flags ++
1128 map ("f"++) flags ++
1129 map ("f"++) flags' ++
1130 map ("X"++) supportedExtensions
1131 where ok (PrefixPred _ _) = False
1133 flags = [ name | (name, _, _) <- fFlags ]
1134 flags' = [ name | (name, _, _) <- fLangFlags ]
1136 --------------- The main flags themselves ------------------
1137 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1139 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1140 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1141 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1143 (HasArg (\s -> do { addCmdlineHCInclude s
1144 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1145 , Flag "v" (OptIntSuffix setVerbosity)
1147 ------- Specific phases --------------------------------------------
1148 -- need to appear before -pgmL to be parsed as LLVM flags.
1149 , Flag "pgmlo" (hasArg (\f -> alterSettings (\s -> s { sPgm_lo = (f,[])})))
1150 , Flag "pgmlc" (hasArg (\f -> alterSettings (\s -> s { sPgm_lc = (f,[])})))
1151 , Flag "pgmL" (hasArg (\f -> alterSettings (\s -> s { sPgm_L = f})))
1152 , Flag "pgmP" (hasArg setPgmP)
1153 , Flag "pgmF" (hasArg (\f -> alterSettings (\s -> s { sPgm_F = f})))
1154 , Flag "pgmc" (hasArg (\f -> alterSettings (\s -> s { sPgm_c = (f,[])})))
1155 , Flag "pgmm" (HasArg (\_ -> addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1156 , Flag "pgms" (hasArg (\f -> alterSettings (\s -> s { sPgm_s = (f,[])})))
1157 , Flag "pgma" (hasArg (\f -> alterSettings (\s -> s { sPgm_a = (f,[])})))
1158 , Flag "pgml" (hasArg (\f -> alterSettings (\s -> s { sPgm_l = (f,[])})))
1159 , Flag "pgmdll" (hasArg (\f -> alterSettings (\s -> s { sPgm_dll = (f,[])})))
1160 , Flag "pgmwindres" (hasArg (\f -> alterSettings (\s -> s { sPgm_windres = f})))
1162 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1163 , Flag "optlo" (hasArg (\f -> alterSettings (\s -> s { sOpt_lo = f : sOpt_lo s})))
1164 , Flag "optlc" (hasArg (\f -> alterSettings (\s -> s { sOpt_lc = f : sOpt_lc s})))
1165 , Flag "optL" (hasArg (\f -> alterSettings (\s -> s { sOpt_L = f : sOpt_L s})))
1166 , Flag "optP" (hasArg addOptP)
1167 , Flag "optF" (hasArg (\f -> alterSettings (\s -> s { sOpt_F = f : sOpt_F s})))
1168 , Flag "optc" (hasArg (\f -> alterSettings (\s -> s { sOpt_c = f : sOpt_c s})))
1169 , Flag "optm" (hasArg (\f -> alterSettings (\s -> s { sOpt_m = f : sOpt_m s})))
1170 , Flag "opta" (hasArg (\f -> alterSettings (\s -> s { sOpt_a = f : sOpt_a s})))
1171 , Flag "optl" (hasArg addOptl)
1172 , Flag "optwindres" (hasArg (\f -> alterSettings (\s -> s { sOpt_windres = f : sOpt_windres s})))
1175 (NoArg (if can_split
1176 then setDynFlag Opt_SplitObjs
1177 else addWarn "ignoring -fsplit-objs"))
1179 -------- ghc -M -----------------------------------------------------
1180 , Flag "dep-suffix" (hasArg addDepSuffix)
1181 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1182 , Flag "dep-makefile" (hasArg setDepMakefile)
1183 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1184 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1185 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1186 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1187 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1188 , Flag "exclude-module" (hasArg addDepExcludeMod)
1189 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1190 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1192 -------- Linking ----------------------------------------------------
1193 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1194 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1195 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1196 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1198 ------- Libraries ---------------------------------------------------
1199 , Flag "L" (Prefix addLibraryPath)
1200 , Flag "l" (AnySuffix (upd . addOptl))
1202 ------- Frameworks --------------------------------------------------
1203 -- -framework-path should really be -F ...
1204 , Flag "framework-path" (HasArg addFrameworkPath)
1205 , Flag "framework" (hasArg addCmdlineFramework)
1207 ------- Output Redirection ------------------------------------------
1208 , Flag "odir" (hasArg setObjectDir)
1209 , Flag "o" (SepArg (upd . setOutputFile . Just))
1210 , Flag "ohi" (hasArg (setOutputHi . Just ))
1211 , Flag "osuf" (hasArg setObjectSuf)
1212 , Flag "hcsuf" (hasArg setHcSuf)
1213 , Flag "hisuf" (hasArg setHiSuf)
1214 , Flag "hidir" (hasArg setHiDir)
1215 , Flag "tmpdir" (hasArg setTmpDir)
1216 , Flag "stubdir" (hasArg setStubDir)
1217 , Flag "outputdir" (hasArg setOutputDir)
1218 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1220 ------- Keeping temporary files -------------------------------------
1221 -- These can be singular (think ghc -c) or plural (think ghc --make)
1222 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1223 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1224 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1225 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1226 , Flag "keep-raw-s-file" (NoArg (addWarn "The -keep-raw-s-file flag does nothing; it will be removed in a future GHC release"))
1227 , Flag "keep-raw-s-files" (NoArg (addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
1228 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1229 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1230 -- This only makes sense as plural
1231 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1233 ------- Miscellaneous ----------------------------------------------
1234 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1235 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1236 , Flag "with-rtsopts" (HasArg setRtsOpts)
1237 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1238 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1239 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1240 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1241 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1242 , Flag "main-is" (SepArg setMainIs)
1243 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1244 , Flag "haddock-opts" (hasArg addHaddockOpts)
1245 , Flag "hpcdir" (SepArg setOptHpcDir)
1247 ------- recompilation checker --------------------------------------
1248 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1249 ; deprecate "Use -fno-force-recomp instead" }))
1250 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1251 ; deprecate "Use -fforce-recomp instead" }))
1253 ------ HsCpp opts ---------------------------------------------------
1254 , Flag "D" (AnySuffix (upd . addOptP))
1255 , Flag "U" (AnySuffix (upd . addOptP))
1257 ------- Include/Import Paths ----------------------------------------
1258 , Flag "I" (Prefix addIncludePath)
1259 , Flag "i" (OptPrefix addImportPath)
1261 ------ Debugging ----------------------------------------------------
1262 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1264 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1265 , Flag "ddump-raw-cmm" (setDumpFlag Opt_D_dump_raw_cmm)
1266 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1267 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1268 , Flag "ddump-core-stats" (setDumpFlag Opt_D_dump_core_stats)
1269 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1270 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1271 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1272 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1273 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1274 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1275 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1276 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1277 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1278 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1279 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1280 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1281 ; setDumpFlag' Opt_D_dump_llvm}))
1282 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1283 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1284 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1285 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1286 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1287 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1288 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1289 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1290 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1291 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1292 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1293 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1294 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1295 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1296 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1297 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1298 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1299 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1300 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1301 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1302 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1303 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1304 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1305 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1306 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1307 , Flag "ddump-cs-trace" (setDumpFlag Opt_D_dump_cs_trace)
1308 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1309 , Flag "ddump-vt-trace" (setDumpFlag Opt_D_dump_vt_trace)
1310 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1311 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1312 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1313 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1314 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1315 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1316 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1317 ; setVerboseCore2Core }))
1318 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1319 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1320 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1321 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1322 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1323 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1324 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1325 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1326 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1327 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1328 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1329 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1330 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1331 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1332 , Flag "dshow-passes" (NoArg (do forceRecompile
1333 setVerbosity (Just 2)))
1334 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1336 ------ Coq-in-GHC ---------------------------
1337 , Flag "dcoqpass" (NoArg (setDynFlag Opt_D_coqpass))
1338 , Flag "ddump-coqpass" (NoArg (setDynFlag Opt_D_dump_coqpass))
1339 , Flag "fcoqpass" (NoArg (setDynFlag Opt_F_coqpass))
1341 ------ Machine dependant (-m<blah>) stuff ---------------------------
1343 , Flag "monly-2-regs" (NoArg (addWarn "The -monly-2-regs flag does nothing; it will be removed in a future GHC release"))
1344 , Flag "monly-3-regs" (NoArg (addWarn "The -monly-3-regs flag does nothing; it will be removed in a future GHC release"))
1345 , Flag "monly-4-regs" (NoArg (addWarn "The -monly-4-regs flag does nothing; it will be removed in a future GHC release"))
1346 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1348 ------ Warning opts -------------------------------------------------
1349 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1350 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1351 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1352 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1353 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1354 ; deprecate "Use -w instead" }))
1355 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1357 ------ Optimisation flags ------------------------------------------
1358 , Flag "O" (noArg (setOptLevel 1))
1359 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1360 , Flag "Odph" (noArg setDPHOpt)
1361 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1362 -- If the number is missing, use 1
1364 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1365 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1366 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1367 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1368 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1369 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1370 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1371 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1372 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1373 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1374 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1375 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1376 , Flag "ffloat-all-lams" (noArg (\d -> d{ floatLamArgs = Nothing }))
1378 ------ Profiling ----------------------------------------------------
1380 -- XXX Should the -f* flags be deprecated?
1381 -- They don't seem to be documented
1382 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1383 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1384 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1385 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1386 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1387 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1388 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1389 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1390 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1392 ------ DPH flags ----------------------------------------------------
1394 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1395 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1396 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1397 , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
1399 ------ Compiler flags -----------------------------------------------
1401 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1402 , Flag "fvia-c" (NoArg
1403 (addWarn "The -fvia-c flag does nothing; it will be removed in a future GHC release"))
1404 , Flag "fvia-C" (NoArg
1405 (addWarn "The -fvia-C flag does nothing; it will be removed in a future GHC release"))
1406 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1408 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1409 setTarget HscNothing))
1410 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1411 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1412 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1413 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1415 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1416 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1417 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1418 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1419 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1420 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1421 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1423 package_flags :: [Flag (CmdLineP DynFlags)]
1425 ------- Packages ----------------------------------------------------
1426 Flag "package-conf" (HasArg extraPkgConf_)
1427 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1428 , Flag "package-name" (hasArg setPackageName)
1429 , Flag "package-id" (HasArg exposePackageId)
1430 , Flag "package" (HasArg exposePackage)
1431 , Flag "hide-package" (HasArg hidePackage)
1432 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1433 , Flag "ignore-package" (HasArg ignorePackage)
1434 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1435 ; deprecate "Use -package instead" }))
1438 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1439 -- False <=> we are turning the flag off
1440 turnOn :: TurnOnFlag; turnOn = True
1441 turnOff :: TurnOnFlag; turnOff = False
1444 = ( String -- Flag in string form
1445 , flag -- Flag in internal form
1446 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1447 -- Typically, emit a warning or error
1449 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1450 -> String -- ^ The flag prefix
1451 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1452 -> FlagSpec flag -- ^ Specification of this particular flag
1453 -> Flag (CmdLineP DynFlags)
1454 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1455 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1457 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1458 deprecatedForExtension lang turn_on
1459 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1461 flag | turn_on = lang
1462 | otherwise = "No"++lang
1464 useInstead :: String -> TurnOnFlag -> DynP ()
1465 useInstead flag turn_on
1466 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1468 no = if turn_on then "" else "no-"
1470 nop :: TurnOnFlag -> DynP ()
1473 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1474 fFlags :: [FlagSpec DynFlag]
1476 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1477 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1478 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1479 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1480 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1481 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1482 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1483 ( "warn-incomplete-uni-patterns", Opt_WarnIncompleteUniPatterns, nop ),
1484 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1485 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1486 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1487 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1488 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1489 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1490 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1491 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1492 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1493 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1494 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1495 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1496 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1497 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1498 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1499 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1500 ( "warn-orphans", Opt_WarnOrphans, nop ),
1501 ( "warn-identities", Opt_WarnIdentities, nop ),
1502 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1503 ( "warn-tabs", Opt_WarnTabs, nop ),
1504 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1505 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1506 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1507 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1508 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1509 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1510 ( "strictness", Opt_Strictness, nop ),
1511 ( "specialise", Opt_Specialise, nop ),
1512 ( "float-in", Opt_FloatIn, nop ),
1513 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1514 ( "full-laziness", Opt_FullLaziness, nop ),
1515 ( "liberate-case", Opt_LiberateCase, nop ),
1516 ( "spec-constr", Opt_SpecConstr, nop ),
1517 ( "cse", Opt_CSE, nop ),
1518 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1519 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1520 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1521 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1522 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1523 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1524 ( "case-merge", Opt_CaseMerge, nop ),
1525 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1526 ( "method-sharing", Opt_MethodSharing,
1527 \_ -> deprecate "doesn't do anything any more"),
1528 -- Remove altogether in GHC 7.2
1529 ( "dicts-cheap", Opt_DictsCheap, nop ),
1530 ( "excess-precision", Opt_ExcessPrecision, nop ),
1531 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1532 ( "print-bind-result", Opt_PrintBindResult, nop ),
1533 ( "force-recomp", Opt_ForceRecomp, nop ),
1534 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1535 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1536 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1537 ( "break-on-exception", Opt_BreakOnException, nop ),
1538 ( "break-on-error", Opt_BreakOnError, nop ),
1539 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1540 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1541 ( "run-cps", Opt_RunCPS, nop ),
1542 ( "run-cpsz", Opt_RunCPSZ, nop ),
1543 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1544 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1545 ( "vectorise", Opt_Vectorise, nop ),
1546 ( "regs-graph", Opt_RegsGraph, nop ),
1547 ( "regs-iterative", Opt_RegsIterative, nop ),
1548 ( "gen-manifest", Opt_GenManifest, nop ),
1549 ( "embed-manifest", Opt_EmbedManifest, nop ),
1550 ( "ext-core", Opt_EmitExternalCore, nop ),
1551 ( "shared-implib", Opt_SharedImplib, nop ),
1552 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1553 ( "helpful-errors", Opt_HelpfulErrors, nop ),
1554 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1555 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1558 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1559 fLangFlags :: [FlagSpec ExtensionFlag]
1561 ( "th", Opt_TemplateHaskell,
1562 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1563 ( "fi", Opt_ForeignFunctionInterface,
1564 deprecatedForExtension "ForeignFunctionInterface" ),
1565 ( "ffi", Opt_ForeignFunctionInterface,
1566 deprecatedForExtension "ForeignFunctionInterface" ),
1567 ( "arrows", Opt_Arrows,
1568 deprecatedForExtension "Arrows" ),
1569 ( "generics", Opt_Generics,
1570 deprecatedForExtension "Generics" ),
1571 ( "implicit-prelude", Opt_ImplicitPrelude,
1572 deprecatedForExtension "ImplicitPrelude" ),
1573 ( "bang-patterns", Opt_BangPatterns,
1574 deprecatedForExtension "BangPatterns" ),
1575 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1576 deprecatedForExtension "MonomorphismRestriction" ),
1577 ( "mono-pat-binds", Opt_MonoPatBinds,
1578 deprecatedForExtension "MonoPatBinds" ),
1579 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1580 deprecatedForExtension "ExtendedDefaultRules" ),
1581 ( "implicit-params", Opt_ImplicitParams,
1582 deprecatedForExtension "ImplicitParams" ),
1583 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1584 deprecatedForExtension "ScopedTypeVariables" ),
1585 ( "parr", Opt_ParallelArrays,
1586 deprecatedForExtension "ParallelArrays" ),
1587 ( "PArr", Opt_ParallelArrays,
1588 deprecatedForExtension "ParallelArrays" ),
1589 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1590 deprecatedForExtension "OverlappingInstances" ),
1591 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1592 deprecatedForExtension "UndecidableInstances" ),
1593 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1594 deprecatedForExtension "IncoherentInstances" )
1597 supportedLanguages :: [String]
1598 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1600 supportedExtensions :: [String]
1601 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1603 supportedLanguagesAndExtensions :: [String]
1604 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1606 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1607 languageFlags :: [FlagSpec Language]
1609 ( "Haskell98", Haskell98, nop ),
1610 ( "Haskell2010", Haskell2010, nop )
1613 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1614 xFlags :: [FlagSpec ExtensionFlag]
1616 ( "CPP", Opt_Cpp, nop ),
1617 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1618 ( "TupleSections", Opt_TupleSections, nop ),
1619 ( "PatternGuards", Opt_PatternGuards, nop ),
1620 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1621 ( "MagicHash", Opt_MagicHash, nop ),
1622 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1623 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1624 ( "KindSignatures", Opt_KindSignatures, nop ),
1625 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1626 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1627 ( "TransformListComp", Opt_TransformListComp, nop ),
1628 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1629 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1630 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1631 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1632 ( "Rank2Types", Opt_Rank2Types, nop ),
1633 ( "RankNTypes", Opt_RankNTypes, nop ),
1634 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1635 ( "TypeOperators", Opt_TypeOperators, nop ),
1636 ( "RecursiveDo", Opt_RecursiveDo,
1637 deprecatedForExtension "DoRec"),
1638 ( "DoRec", Opt_DoRec, nop ),
1639 ( "Arrows", Opt_Arrows, nop ),
1640 ( "ModalTypes", Opt_ModalTypes, nop ),
1641 ( "ParallelArrays", Opt_ParallelArrays, nop ),
1642 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1643 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1644 ( "Generics", Opt_Generics, nop ),
1645 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1646 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1647 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1648 ( "RecordPuns", Opt_RecordPuns,
1649 deprecatedForExtension "NamedFieldPuns" ),
1650 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1651 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1652 ( "GADTs", Opt_GADTs, nop ),
1653 ( "GADTSyntax", Opt_GADTSyntax, nop ),
1654 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1655 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1656 ( "BangPatterns", Opt_BangPatterns, nop ),
1657 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1658 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1659 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1660 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1661 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1662 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1663 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1664 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1665 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1666 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1667 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1668 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1669 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1670 \ turn_on -> if not turn_on
1671 then deprecate "You can't turn off RelaxedPolyRec any more"
1673 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1674 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1675 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1677 ( "PatternSignatures", Opt_ScopedTypeVariables,
1678 deprecatedForExtension "ScopedTypeVariables" ),
1680 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1681 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1682 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1683 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1684 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1685 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1686 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1687 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1688 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1689 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1690 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1691 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1692 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1693 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1694 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1695 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1696 ( "PackageImports", Opt_PackageImports, nop )
1699 defaultFlags :: [DynFlag]
1701 = [ Opt_AutoLinkPackages,
1702 Opt_ReadUserPackageConf,
1706 #if GHC_DEFAULT_NEW_CODEGEN
1712 Opt_PrintBindContents,
1717 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1718 -- The default -O0 options
1722 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1724 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1725 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1726 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1727 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1728 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1729 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1730 , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
1731 , (Opt_FunctionalDependencies, turnOn, Opt_MultiParamTypeClasses)
1733 , (Opt_ModalTypes, turnOn, Opt_RankNTypes)
1734 , (Opt_ModalTypes, turnOn, Opt_ExplicitForAll)
1735 --, (Opt_ModalTypes, turnOn, Opt_RebindableSyntax)
1736 , (Opt_ModalTypes, turnOff, Opt_MonomorphismRestriction)
1738 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1740 , (Opt_GADTs, turnOn, Opt_GADTSyntax)
1741 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1742 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1744 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1745 -- all over the place
1747 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1749 -- Record wild-cards implies field disambiguation
1750 -- Otherwise if you write (C {..}) you may well get
1751 -- stuff like " 'a' not in scope ", which is a bit silly
1752 -- if the compiler has just filled in field 'a' of constructor 'C'
1753 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1755 , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
1758 optLevelFlags :: [([Int], DynFlag)]
1760 = [ ([0], Opt_IgnoreInterfacePragmas)
1761 , ([0], Opt_OmitInterfacePragmas)
1763 , ([1,2], Opt_IgnoreAsserts)
1764 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1766 , ([1,2], Opt_DoEtaReduction)
1767 , ([1,2], Opt_CaseMerge)
1768 , ([1,2], Opt_Strictness)
1770 , ([1,2], Opt_FullLaziness)
1771 , ([1,2], Opt_Specialise)
1772 , ([1,2], Opt_FloatIn)
1774 , ([2], Opt_LiberateCase)
1775 , ([2], Opt_SpecConstr)
1776 , ([2], Opt_RegsGraph)
1778 -- , ([2], Opt_StaticArgumentTransformation)
1779 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1780 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1781 -- several improvements to the heuristics, and I'm concerned that without
1782 -- those changes SAT will interfere with some attempts to write "high
1783 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1784 -- this year. In particular, the version in HEAD lacks the tail call
1785 -- criterion, so many things that look like reasonable loops will be
1786 -- turned into functions with extra (unneccesary) thunk creation.
1788 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1789 -- This one is important for a tiresome reason:
1790 -- we want to make sure that the bindings for data
1791 -- constructors are eta-expanded. This is probably
1792 -- a good thing anyway, but it seems fragile.
1795 -- -----------------------------------------------------------------------------
1796 -- Standard sets of warning options
1798 standardWarnings :: [DynFlag]
1800 = [ Opt_WarnWarningsDeprecations,
1801 Opt_WarnDeprecatedFlags,
1802 Opt_WarnUnrecognisedPragmas,
1803 Opt_WarnOverlappingPatterns,
1804 Opt_WarnMissingFields,
1805 Opt_WarnMissingMethods,
1806 Opt_WarnDuplicateExports,
1807 Opt_WarnLazyUnliftedBindings,
1808 Opt_WarnDodgyForeignImports,
1809 Opt_WarnWrongDoBind,
1810 Opt_WarnAlternativeLayoutRuleTransitional
1813 minusWOpts :: [DynFlag]
1814 -- Things you get with -W
1816 = standardWarnings ++
1817 [ Opt_WarnUnusedBinds,
1818 Opt_WarnUnusedMatches,
1819 Opt_WarnUnusedImports,
1820 Opt_WarnIncompletePatterns,
1821 Opt_WarnDodgyExports,
1822 Opt_WarnDodgyImports
1825 minusWallOpts :: [DynFlag]
1826 -- Things you get with -Wall
1829 [ Opt_WarnTypeDefaults,
1830 Opt_WarnNameShadowing,
1831 Opt_WarnMissingSigs,
1834 Opt_WarnUnusedDoBind
1837 minuswRemovesOpts :: [DynFlag]
1838 -- minuswRemovesOpts should be every warning option
1842 Opt_WarnIncompletePatternsRecUpd,
1843 Opt_WarnIncompleteUniPatterns,
1844 Opt_WarnMonomorphism,
1845 Opt_WarnUnrecognisedPragmas,
1846 Opt_WarnAutoOrphans,
1847 Opt_WarnImplicitPrelude
1850 enableGlasgowExts :: DynP ()
1851 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1852 mapM_ setExtensionFlag glasgowExtsFlags
1854 disableGlasgowExts :: DynP ()
1855 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1856 mapM_ unSetExtensionFlag glasgowExtsFlags
1858 glasgowExtsFlags :: [ExtensionFlag]
1859 glasgowExtsFlags = [
1860 Opt_ForeignFunctionInterface
1861 , Opt_UnliftedFFITypes
1862 , Opt_ImplicitParams
1863 , Opt_ScopedTypeVariables
1865 , Opt_TypeSynonymInstances
1866 , Opt_StandaloneDeriving
1867 , Opt_DeriveDataTypeable
1869 , Opt_DeriveFoldable
1870 , Opt_DeriveTraversable
1871 , Opt_FlexibleContexts
1872 , Opt_FlexibleInstances
1873 , Opt_ConstrainedClassMethods
1874 , Opt_MultiParamTypeClasses
1875 , Opt_FunctionalDependencies
1877 , Opt_PolymorphicComponents
1878 , Opt_ExistentialQuantification
1880 , Opt_PostfixOperators
1882 , Opt_LiberalTypeSynonyms
1886 , Opt_ParallelListComp
1887 , Opt_EmptyDataDecls
1888 , Opt_KindSignatures
1889 , Opt_GeneralizedNewtypeDeriving ]
1892 -- Consult the RTS to find whether GHC itself has been built profiled
1893 -- If so, you can't use Template Haskell
1894 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1896 rtsIsProfiled :: Bool
1897 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1900 checkTemplateHaskellOk :: Bool -> DynP ()
1902 checkTemplateHaskellOk turn_on
1903 | turn_on && rtsIsProfiled
1904 = addErr "You can't use Template Haskell with a profiled compiler"
1908 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1909 -- so we simply say "ok". It doesn't matter because TH isn't
1910 -- available in stage 1 anyway.
1911 checkTemplateHaskellOk _ = return ()
1914 {- **********************************************************************
1916 DynFlags constructors
1918 %********************************************************************* -}
1920 type DynP = EwM (CmdLineP DynFlags)
1922 upd :: (DynFlags -> DynFlags) -> DynP ()
1923 upd f = liftEwM (do { dfs <- getCmdLineState
1924 ; putCmdLineState $! (f dfs) })
1926 --------------- Constructor functions for OptKind -----------------
1927 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1928 noArg fn = NoArg (upd fn)
1930 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1931 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1933 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1934 hasArg fn = HasArg (upd . fn)
1936 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1937 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1938 ; deprecate deprec })
1940 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1941 intSuffix fn = IntSuffix (\n -> upd (fn n))
1943 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1944 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1946 --------------------------
1947 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1948 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1949 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1951 --------------------------
1952 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1953 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1956 deps = [ if turn_on then setExtensionFlag d
1957 else unSetExtensionFlag d
1958 | (f', turn_on, d) <- impliedFlags, f' == f ]
1959 -- When you set f, set the ones it implies
1960 -- NB: use setExtensionFlag recursively, in case the implied flags
1961 -- implies further flags
1963 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1964 -- When you un-set f, however, we don't un-set the things it implies
1965 -- (except for -fno-glasgow-exts, which is treated specially)
1967 --------------------------
1968 alterSettings :: (Settings -> Settings) -> DynFlags -> DynFlags
1969 alterSettings f dflags = dflags { settings = f (settings dflags) }
1971 --------------------------
1972 setDumpFlag' :: DynFlag -> DynP ()
1973 setDumpFlag' dump_flag
1974 = do { setDynFlag dump_flag
1975 ; when want_recomp forceRecompile }
1977 -- Certain dumpy-things are really interested in what's going
1978 -- on during recompilation checking, so in those cases we
1979 -- don't want to turn it off.
1980 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1981 Opt_D_dump_hi_diffs]
1983 forceRecompile :: DynP ()
1984 -- Whenver we -ddump, force recompilation (by switching off the
1985 -- recompilation checker), else you don't see the dump! However,
1986 -- don't switch it off in --make mode, else *everything* gets
1987 -- recompiled which probably isn't what you want
1988 forceRecompile = do { dfs <- liftEwM getCmdLineState
1989 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1991 force_recomp dfs = isOneShot (ghcMode dfs)
1993 setVerboseCore2Core :: DynP ()
1994 setVerboseCore2Core = do forceRecompile
1995 setDynFlag Opt_D_verbose_core2core
1996 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1999 setDumpSimplPhases :: String -> DynP ()
2000 setDumpSimplPhases s = do forceRecompile
2001 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
2003 spec = case s of { ('=' : s') -> s'; _ -> s }
2005 setVerbosity :: Maybe Int -> DynP ()
2006 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
2008 addCmdlineHCInclude :: String -> DynP ()
2009 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
2011 extraPkgConf_ :: FilePath -> DynP ()
2012 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
2014 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
2016 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
2018 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
2020 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
2022 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
2024 setPackageName :: String -> DynFlags -> DynFlags
2025 setPackageName p s = s{ thisPackage = stringToPackageId p }
2027 -- If we're linking a binary, then only targets that produce object
2028 -- code are allowed (requests for other target types are ignored).
2029 setTarget :: HscTarget -> DynP ()
2030 setTarget l = upd set
2033 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
2036 -- Changes the target only if we're compiling object code. This is
2037 -- used by -fasm and -fllvm, which switch from one to the other, but
2038 -- not from bytecode to object-code. The idea is that -fasm/-fllvm
2039 -- can be safely used in an OPTIONS_GHC pragma.
2040 setObjTarget :: HscTarget -> DynP ()
2041 setObjTarget l = upd set
2044 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
2047 setOptLevel :: Int -> DynFlags -> DynFlags
2048 setOptLevel n dflags
2049 | hscTarget dflags == HscInterpreted && n > 0
2051 -- not in IO any more, oh well:
2052 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
2054 = updOptLevel n dflags
2057 -- -Odph is equivalent to
2059 -- -O2 optimise as much as possible
2060 -- -fmax-simplifier-iterations20 this is necessary sometimes
2061 -- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
2063 setDPHOpt :: DynFlags -> DynFlags
2064 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
2068 -- Determines the package used by the vectoriser for the symbols of the vectorised code.
2069 -- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
2070 -- vectoriser cannot be used.
2072 data DPHBackend = DPHPar -- "dph-par"
2073 | DPHSeq -- "dph-seq"
2074 | DPHThis -- the currently compiled package
2075 | DPHNone -- no DPH library available
2076 deriving(Eq, Ord, Enum, Show)
2078 setDPHBackend :: DPHBackend -> DynP ()
2079 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
2081 -- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
2083 dphPackageMaybe :: DynFlags -> Maybe PackageId
2084 dphPackageMaybe dflags
2085 = case dphBackend dflags of
2086 DPHPar -> Just dphParPackageId
2087 DPHSeq -> Just dphSeqPackageId
2088 DPHThis -> Just (thisPackage dflags)
2091 setMainIs :: String -> DynP ()
2093 | not (null main_fn) && isLower (head main_fn)
2094 -- The arg looked like "Foo.Bar.baz"
2095 = upd $ \d -> d{ mainFunIs = Just main_fn,
2096 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2098 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2099 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2101 | otherwise -- The arg looked like "baz"
2102 = upd $ \d -> d{ mainFunIs = Just arg }
2104 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2106 -----------------------------------------------------------------------------
2107 -- Paths & Libraries
2109 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2111 -- -i on its own deletes the import paths
2112 addImportPath "" = upd (\s -> s{importPaths = []})
2113 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2117 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2120 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2122 addFrameworkPath p =
2123 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2125 #ifndef mingw32_TARGET_OS
2126 split_marker :: Char
2127 split_marker = ':' -- not configurable (ToDo)
2130 splitPathList :: String -> [String]
2131 splitPathList s = filter notNull (splitUp s)
2132 -- empty paths are ignored: there might be a trailing
2133 -- ':' in the initial list, for example. Empty paths can
2134 -- cause confusion when they are translated into -I options
2135 -- for passing to gcc.
2137 #ifndef mingw32_TARGET_OS
2138 splitUp xs = split split_marker xs
2140 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2142 -- That is, if "foo:bar:baz" is used, this interpreted as
2143 -- consisting of three entries, 'foo', 'bar', 'baz'.
2144 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2145 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2147 -- Notice that no attempt is made to fully replace the 'standard'
2148 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2149 -- that this will cause too much breakage for users & ':' will
2150 -- work fine even with DOS paths, if you're not insisting on being silly.
2153 splitUp (x:':':div:xs) | div `elem` dir_markers
2154 = ((x:':':div:p): splitUp rs)
2156 (p,rs) = findNextPath xs
2157 -- we used to check for existence of the path here, but that
2158 -- required the IO monad to be threaded through the command-line
2159 -- parser which is quite inconvenient. The
2160 splitUp xs = cons p (splitUp rs)
2162 (p,rs) = findNextPath xs
2167 -- will be called either when we've consumed nought or the
2168 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2169 -- finding the next split marker.
2171 case break (`elem` split_markers) xs of
2172 (p, _:ds) -> (p, ds)
2175 split_markers :: [Char]
2176 split_markers = [':', ';']
2178 dir_markers :: [Char]
2179 dir_markers = ['/', '\\']
2182 -- -----------------------------------------------------------------------------
2183 -- tmpDir, where we store temporary files.
2185 setTmpDir :: FilePath -> DynFlags -> DynFlags
2186 setTmpDir dir = alterSettings (\s -> s { sTmpDir = normalise dir })
2187 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2188 -- seem necessary now --SDM 7/2/2008
2190 -----------------------------------------------------------------------------
2193 setRtsOpts :: String -> DynP ()
2194 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2196 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2197 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2199 -----------------------------------------------------------------------------
2202 setOptHpcDir :: String -> DynP ()
2203 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2205 -----------------------------------------------------------------------------
2206 -- Via-C compilation stuff
2208 -- There are some options that we need to pass to gcc when compiling
2209 -- Haskell code via C, but are only supported by recent versions of
2210 -- gcc. The configure script decides which of these options we need,
2211 -- and puts them in the "settings" file in $topdir. The advantage of
2212 -- having these in a separate file is that the file can be created at
2213 -- install-time depending on the available gcc version, and even
2214 -- re-generated later if gcc is upgraded.
2216 -- The options below are not dependent on the version of gcc, only the
2219 machdepCCOpts :: DynFlags -> [String] -- flags for all C compilations
2220 machdepCCOpts _ = cCcOpts ++ machdepCCOpts'
2222 machdepCCOpts' :: [String] -- flags for all C compilations
2224 #if alpha_TARGET_ARCH
2226 #ifdef HAVE_THREADED_RTS_SUPPORT
2230 -- For now, to suppress the gcc warning "call-clobbered
2231 -- register used for global register variable", we simply
2232 -- disable all warnings altogether using the -w flag. Oh well.
2234 #elif hppa_TARGET_ARCH
2235 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2236 -- (very nice, but too bad the HP /usr/include files don't agree.)
2237 = ["-D_HPUX_SOURCE"]
2239 #elif i386_TARGET_ARCH
2240 -- -fno-defer-pop : basically the same game as for m68k
2242 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2243 -- the fp (%ebp) for our register maps.
2244 = if opt_Static then ["-DDONT_WANT_WIN32_DLL_SUPPORT"] else []
2250 picCCOpts :: DynFlags -> [String]
2252 #if darwin_TARGET_OS
2253 -- Apple prefers to do things the other way round.
2254 -- PIC is on by default.
2255 -- -mdynamic-no-pic:
2256 -- Turn off PIC code generation.
2258 -- Don't generate "common" symbols - these are unwanted
2259 -- in dynamic libraries.
2262 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2264 = ["-mdynamic-no-pic"]
2265 #elif mingw32_TARGET_OS
2266 -- no -fPIC for Windows
2268 = ["-U __PIC__","-D__PIC__"]
2272 -- we need -fPIC for C files when we are compiling with -dynamic,
2273 -- otherwise things like stub.c files don't get compiled
2274 -- correctly. They need to reference data in the Haskell
2275 -- objects, but can't without -fPIC. See
2276 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2277 | opt_PIC || not opt_Static
2278 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2283 -- -----------------------------------------------------------------------------
2287 can_split = cSupportsSplitObjs == "YES"
2289 -- -----------------------------------------------------------------------------
2292 compilerInfo :: DynFlags -> [(String, String)]
2294 = -- We always make "Project name" be first to keep parsing in
2295 -- other languages simple, i.e. when looking for other fields,
2296 -- you don't have to worry whether there is a leading '[' or not
2297 ("Project name", cProjectName)
2298 -- Next come the settings, so anything else can be overridden
2299 -- in the settings file (as "lookup" uses the first match for the
2301 : rawSettings dflags
2302 ++ [("Project version", cProjectVersion),
2303 ("Booter version", cBooterVersion),
2305 ("Build platform", cBuildPlatformString),
2306 ("Host platform", cHostPlatformString),
2307 ("Target platform", cTargetPlatformString),
2308 ("Have interpreter", cGhcWithInterpreter),
2309 ("Object splitting supported", cSupportsSplitObjs),
2310 ("Have native code generator", cGhcWithNativeCodeGen),
2311 ("Support SMP", cGhcWithSMP),
2312 ("Unregisterised", cGhcUnregisterised),
2313 ("Tables next to code", cGhcEnableTablesNextToCode),
2314 ("RTS ways", cGhcRTSWays),
2315 ("Leading underscore", cLeadingUnderscore),
2316 ("Debug on", show debugIsOn),
2317 ("LibDir", topDir dflags),
2318 ("Global Package DB", systemPackageConfig dflags),
2319 ("C compiler flags", show cCcOpts),
2320 ("Gcc Linker flags", show cGccLinkerOpts),
2321 ("Ld Linker flags", show cLdLinkerOpts)
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