2 -- Temporary, until rtsIsProfiled is fixed
8 -- (c) The University of Glasgow 2005
11 -- Most flags are dynamic flags, which means they can change from
12 -- compilation to compilation using @OPTIONS_GHC@ pragmas, and in a
13 -- multi-session GHC each session can be using different dynamic
14 -- flags. Dynamic flags can also be set at the prompt in GHCi.
16 -- * Dynamic flags and associated configuration types
28 HscTarget(..), isObjectTarget, defaultObjectTarget,
29 GhcMode(..), isOneShot,
30 GhcLink(..), isNoLink,
34 fFlags, fLangFlags, xFlags,
35 DPHBackend(..), dphPackage,
38 -- ** Manipulating DynFlags
39 defaultDynFlags, -- DynFlags
40 initDynFlags, -- DynFlags -> IO DynFlags
42 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
49 -- ** Parsing DynFlags
51 parseDynamicNoPackageFlags,
54 supportedLanguagesAndExtensions,
56 -- ** DynFlag C compiler options
57 machdepCCOpts, picCCOpts,
59 -- * Configuration of the stg-to-stg passes
63 -- * Compiler configuration suitable for display to the user
67 -- Only in stage 2 can we be sure that the RTS
68 -- exposes the appropriate runtime boolean
73 #include "HsVersions.h"
75 #ifndef OMIT_NATIVE_CODEGEN
80 import PrelNames ( mAIN )
82 import {-# SOURCE #-} Packages (PackageState)
83 import DriverPhases ( Phase(..), phaseInputExt )
86 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
89 import Maybes ( orElse )
93 import Foreign.C ( CInt )
94 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
96 import System.IO.Unsafe ( unsafePerformIO )
98 import Control.Monad ( when )
102 import Data.Map (Map)
103 import qualified Data.Map as Map
104 import System.FilePath
105 import System.IO ( stderr, hPutChar )
107 -- -----------------------------------------------------------------------------
110 -- | Enumerates the simple on-or-off dynamic flags
116 | Opt_D_dump_cmmz_pretty
120 | Opt_D_dump_asm_native
121 | Opt_D_dump_asm_liveness
122 | Opt_D_dump_asm_coalesce
123 | Opt_D_dump_asm_regalloc
124 | Opt_D_dump_asm_regalloc_stages
125 | Opt_D_dump_asm_conflicts
126 | Opt_D_dump_asm_stats
127 | Opt_D_dump_asm_expanded
134 | Opt_D_dump_inlinings
135 | Opt_D_dump_rule_firings
136 | Opt_D_dump_rule_rewrites
137 | Opt_D_dump_occur_anal
141 | Opt_D_dump_simpl_iterations
142 | Opt_D_dump_simpl_phases
151 | Opt_D_dump_worker_wrapper
152 | Opt_D_dump_rn_trace
153 | Opt_D_dump_rn_stats
155 | Opt_D_dump_simpl_stats
156 | Opt_D_dump_tc_trace
157 | Opt_D_dump_if_trace
164 | Opt_D_verbose_core2core
165 | Opt_D_verbose_stg2stg
167 | Opt_D_dump_hi_diffs
168 | Opt_D_dump_minimal_imports
169 | Opt_D_dump_mod_cycles
170 | Opt_D_dump_view_pattern_commoning
171 | Opt_D_faststring_stats
172 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
173 | Opt_D_no_debug_output
179 | Opt_WarnIsError -- -Werror; makes warnings fatal
180 | Opt_WarnDuplicateExports
182 | Opt_WarnImplicitPrelude
183 | Opt_WarnIncompletePatterns
184 | Opt_WarnIncompletePatternsRecUpd
185 | Opt_WarnMissingFields
186 | Opt_WarnMissingImportList
187 | Opt_WarnMissingMethods
188 | Opt_WarnMissingSigs
189 | Opt_WarnMissingLocalSigs
190 | Opt_WarnNameShadowing
191 | Opt_WarnOverlappingPatterns
192 | Opt_WarnTypeDefaults
193 | Opt_WarnMonomorphism
194 | Opt_WarnUnusedBinds
195 | Opt_WarnUnusedImports
196 | Opt_WarnUnusedMatches
197 | Opt_WarnWarningsDeprecations
198 | Opt_WarnDeprecatedFlags
199 | Opt_WarnDodgyExports
200 | Opt_WarnDodgyImports
202 | Opt_WarnAutoOrphans
205 | Opt_WarnUnrecognisedPragmas
206 | Opt_WarnDodgyForeignImports
207 | Opt_WarnLazyUnliftedBindings
208 | Opt_WarnUnusedDoBind
209 | Opt_WarnWrongDoBind
210 | Opt_WarnAlternativeLayoutRuleTransitional
212 | Opt_PrintExplicitForalls
219 | Opt_StaticArgumentTransformation
223 | Opt_DoLambdaEtaExpansion
227 | Opt_UnboxStrictFields
228 | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
230 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
232 | Opt_RegsGraph -- do graph coloring register allocation
233 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
236 | Opt_IgnoreInterfacePragmas
237 | Opt_OmitInterfacePragmas
238 | Opt_ExposeAllUnfoldings
241 | Opt_AutoSccsOnAllToplevs
242 | Opt_AutoSccsOnExportedToplevs
243 | Opt_AutoSccsOnIndividualCafs
250 | Opt_ExcessPrecision
251 | Opt_EagerBlackHoling
252 | Opt_ReadUserPackageConf
256 | Opt_HideAllPackages
257 | Opt_PrintBindResult
261 | Opt_BreakOnException
263 | Opt_PrintEvldWithShow
264 | Opt_PrintBindContents
267 | Opt_EmitExternalCore
269 | Opt_BuildingCabalPackage
277 | Opt_ConvertToZipCfgAndBack
278 | Opt_AutoLinkPackages
279 | Opt_ImplicitImportQualified
288 | Opt_KeepRawTokenStream
293 data Language = Haskell98 | Haskell2010
297 | Opt_OverlappingInstances
298 | Opt_UndecidableInstances
299 | Opt_IncoherentInstances
300 | Opt_MonomorphismRestriction
303 | Opt_RelaxedPolyRec -- Deprecated
304 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
305 | Opt_ForeignFunctionInterface
306 | Opt_UnliftedFFITypes
307 | Opt_GHCForeignImportPrim
308 | Opt_ParallelArrays -- Syntactic support for parallel arrays
309 | Opt_Arrows -- Arrow-notation syntax
310 | Opt_TemplateHaskell
313 | Opt_Generics -- "Derivable type classes"
314 | Opt_ImplicitPrelude
315 | Opt_ScopedTypeVariables
319 | Opt_OverloadedStrings
320 | Opt_DisambiguateRecordFields
321 | Opt_RecordWildCards
327 | Opt_DoAndIfThenElse
328 | Opt_RebindableSyntax
330 | Opt_StandaloneDeriving
331 | Opt_DeriveDataTypeable
333 | Opt_DeriveTraversable
336 | Opt_TypeSynonymInstances
337 | Opt_FlexibleContexts
338 | Opt_FlexibleInstances
339 | Opt_ConstrainedClassMethods
340 | Opt_MultiParamTypeClasses
341 | Opt_FunctionalDependencies
343 | Opt_PolymorphicComponents
344 | Opt_ExistentialQuantification
348 | Opt_ParallelListComp
349 | Opt_TransformListComp
350 | Opt_GeneralizedNewtypeDeriving
353 | Opt_PostfixOperators
356 | Opt_LiberalTypeSynonyms
359 | Opt_ImpredicativeTypes
363 | Opt_AlternativeLayoutRule
364 | Opt_AlternativeLayoutRuleTransitional
365 | Opt_DatatypeContexts
366 | Opt_NondecreasingIndentation
370 -- | Contains not only a collection of 'DynFlag's but also a plethora of
371 -- information relating to the compilation of a single file or GHC session
372 data DynFlags = DynFlags {
375 hscTarget :: HscTarget,
376 hscOutName :: String, -- ^ Name of the output file
377 extCoreName :: String, -- ^ Name of the .hcr output file
378 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
379 optLevel :: Int, -- ^ Optimisation level
380 simplPhases :: Int, -- ^ Number of simplifier phases
381 maxSimplIterations :: Int, -- ^ Max simplifier iterations
382 shouldDumpSimplPhase :: Maybe String,
383 ruleCheck :: Maybe String,
384 strictnessBefore :: [Int], -- ^ Additional demand analysis
386 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
387 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
388 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
389 floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
390 -- See CoreMonad.FloatOutSwitches
392 #ifndef OMIT_NATIVE_CODEGEN
393 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
395 stolen_x86_regs :: Int,
396 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
397 importPaths :: [FilePath],
399 mainFunIs :: Maybe String,
400 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
402 dphBackend :: DPHBackend,
404 thisPackage :: PackageId, -- ^ name of package currently being compiled
407 ways :: [Way], -- ^ Way flags from the command line
408 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
409 rtsBuildTag :: String, -- ^ The RTS \"way\"
411 -- For object splitting
412 splitInfo :: Maybe (String,Int),
415 objectDir :: Maybe String,
416 dylibInstallName :: Maybe String,
417 hiDir :: Maybe String,
418 stubDir :: Maybe String,
424 outputFile :: Maybe String,
425 outputHi :: Maybe String,
426 dynLibLoader :: DynLibLoader,
428 -- | This is set by 'DriverPipeline.runPipeline' based on where
429 -- its output is going.
430 dumpPrefix :: Maybe FilePath,
432 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
433 -- Set by @-ddump-file-prefix@
434 dumpPrefixForce :: Maybe FilePath,
436 includePaths :: [String],
437 libraryPaths :: [String],
438 frameworkPaths :: [String], -- used on darwin only
439 cmdlineFrameworks :: [String], -- ditto
440 tmpDir :: String, -- no trailing '/'
442 ghcUsagePath :: FilePath, -- Filled in by SysTools
443 ghciUsagePath :: FilePath, -- ditto
444 rtsOpts :: Maybe String,
445 rtsOptsEnabled :: RtsOptsEnabled,
447 hpcDir :: String, -- ^ Path to store the .mix files
449 -- options for particular phases
457 opt_windres :: [String],
458 opt_lo :: [String], -- LLVM: llvm optimiser
459 opt_lc :: [String], -- LLVM: llc static compiler
461 -- commands for particular phases
463 pgm_P :: (String,[Option]),
465 pgm_c :: (String,[Option]),
466 pgm_m :: (String,[Option]),
467 pgm_s :: (String,[Option]),
468 pgm_a :: (String,[Option]),
469 pgm_l :: (String,[Option]),
470 pgm_dll :: (String,[Option]),
472 pgm_sysman :: String,
473 pgm_windres :: String,
474 pgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
475 pgm_lc :: (String,[Option]), -- LLVM: llc static compiler
478 depMakefile :: FilePath,
479 depIncludePkgDeps :: Bool,
480 depExcludeMods :: [ModuleName],
481 depSuffixes :: [String],
484 extraPkgConfs :: [FilePath],
485 topDir :: FilePath, -- filled in by SysTools
486 systemPackageConfig :: FilePath, -- ditto
487 -- ^ The @-package-conf@ flags given on the command line, in the order
490 packageFlags :: [PackageFlag],
491 -- ^ The @-package@ and @-hide-package@ flags from the command-line
494 -- NB. do not modify this field, it is calculated by
495 -- Packages.initPackages and Packages.updatePackages.
496 pkgDatabase :: Maybe [PackageConfig],
497 pkgState :: PackageState,
500 -- These have to be IORefs, because the defaultCleanupHandler needs to
501 -- know what to clean when an exception happens
502 filesToClean :: IORef [FilePath],
503 dirsToClean :: IORef (Map FilePath FilePath),
507 -- Don't change this without updating extensionFlags:
508 language :: Maybe Language,
509 -- Don't change this without updating extensionFlags:
510 extensions :: [OnOff ExtensionFlag],
511 -- extensionFlags should always be equal to
512 -- flattenExtensionFlags language extensions
513 extensionFlags :: [ExtensionFlag],
515 -- | Message output action: use "ErrUtils" instead of this if you can
516 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
518 haddockOptions :: Maybe String
521 wayNames :: DynFlags -> [WayName]
522 wayNames = map wayName . ways
524 -- | The target code type of the compilation (if any).
526 -- Whenever you change the target, also make sure to set 'ghcLink' to
527 -- something sensible.
529 -- 'HscNothing' can be used to avoid generating any output, however, note
532 -- * This will not run the desugaring step, thus no warnings generated in
533 -- this step will be output. In particular, this includes warnings related
534 -- to pattern matching. You can run the desugarer manually using
535 -- 'GHC.desugarModule'.
537 -- * If a program uses Template Haskell the typechecker may try to run code
538 -- from an imported module. This will fail if no code has been generated
539 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
540 -- whether this might be the case and choose to either switch to a
541 -- different target or avoid typechecking such modules. (The latter may
542 -- preferable for security reasons.)
545 = HscC -- ^ Generate C code.
546 | HscAsm -- ^ Generate assembly using the native code generator.
547 | HscLlvm -- ^ Generate assembly using the llvm code generator.
548 | HscJava -- ^ Generate Java bytecode.
549 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
550 | HscNothing -- ^ Don't generate any code. See notes above.
553 -- | Will this target result in an object file on the disk?
554 isObjectTarget :: HscTarget -> Bool
555 isObjectTarget HscC = True
556 isObjectTarget HscAsm = True
557 isObjectTarget HscLlvm = True
558 isObjectTarget _ = False
560 -- | The 'GhcMode' tells us whether we're doing multi-module
561 -- compilation (controlled via the "GHC" API) or one-shot
562 -- (single-module) compilation. This makes a difference primarily to
563 -- the "Finder": in one-shot mode we look for interface files for
564 -- imported modules, but in multi-module mode we look for source files
565 -- in order to check whether they need to be recompiled.
567 = CompManager -- ^ @\-\-make@, GHCi, etc.
568 | OneShot -- ^ @ghc -c Foo.hs@
569 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
572 instance Outputable GhcMode where
573 ppr CompManager = ptext (sLit "CompManager")
574 ppr OneShot = ptext (sLit "OneShot")
575 ppr MkDepend = ptext (sLit "MkDepend")
577 isOneShot :: GhcMode -> Bool
578 isOneShot OneShot = True
579 isOneShot _other = False
581 -- | What to do in the link step, if there is one.
583 = NoLink -- ^ Don't link at all
584 | LinkBinary -- ^ Link object code into a binary
585 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
586 -- bytecode and object code).
587 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
590 isNoLink :: GhcLink -> Bool
591 isNoLink NoLink = True
594 -- Is it worth evaluating this Bool and caching it in the DynFlags value
595 -- during initDynFlags?
596 doingTickyProfiling :: DynFlags -> Bool
597 doingTickyProfiling _ = opt_Ticky
598 -- XXX -ticky is a static flag, because it implies -debug which is also
599 -- static. If the way flags were made dynamic, we could fix this.
602 = ExposePackage String
603 | ExposePackageId String
605 | IgnorePackage String
608 defaultHscTarget :: HscTarget
609 defaultHscTarget = defaultObjectTarget
611 -- | The 'HscTarget' value corresponding to the default way to create
612 -- object files on the current platform.
613 defaultObjectTarget :: HscTarget
615 | cGhcWithNativeCodeGen == "YES" = HscAsm
623 data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
625 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
626 initDynFlags :: DynFlags -> IO DynFlags
627 initDynFlags dflags = do
628 -- someday these will be dynamic flags
629 ways <- readIORef v_Ways
630 refFilesToClean <- newIORef []
631 refDirsToClean <- newIORef Map.empty
634 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
635 rtsBuildTag = mkBuildTag ways,
636 filesToClean = refFilesToClean,
637 dirsToClean = refDirsToClean
640 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
641 -- and must be fully initialized by 'GHC.newSession' first.
642 defaultDynFlags :: DynFlags
645 ghcMode = CompManager,
646 ghcLink = LinkBinary,
647 hscTarget = defaultHscTarget,
653 maxSimplIterations = 4,
654 shouldDumpSimplPhase = Nothing,
656 specConstrThreshold = Just 200,
657 specConstrCount = Just 3,
658 liberateCaseThreshold = Just 200,
659 floatLamArgs = Just 0, -- Default: float only if no fvs
660 strictnessBefore = [],
662 #ifndef OMIT_NATIVE_CODEGEN
663 targetPlatform = defaultTargetPlatform,
666 cmdlineHcIncludes = [],
670 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
672 dphBackend = DPHNone,
674 thisPackage = mainPackageId,
677 dylibInstallName = Nothing,
681 objectSuf = phaseInputExt StopLn,
682 hcSuf = phaseInputExt HCc,
685 outputFile = Nothing,
687 dynLibLoader = SystemDependent,
688 dumpPrefix = Nothing,
689 dumpPrefixForce = Nothing,
693 cmdlineFrameworks = [],
694 tmpDir = cDEFAULT_TMPDIR,
696 rtsOptsEnabled = RtsOptsSafeOnly,
702 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
715 pkgDatabase = Nothing,
716 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
717 ways = panic "defaultDynFlags: No ways",
718 buildTag = panic "defaultDynFlags: No buildTag",
719 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
721 -- initSysTools fills all these in
722 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
723 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
724 topDir = panic "defaultDynFlags: No topDir",
725 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
726 pgm_L = panic "defaultDynFlags: No pgm_L",
727 pgm_P = panic "defaultDynFlags: No pgm_P",
728 pgm_F = panic "defaultDynFlags: No pgm_F",
729 pgm_c = panic "defaultDynFlags: No pgm_c",
730 pgm_m = panic "defaultDynFlags: No pgm_m",
731 pgm_s = panic "defaultDynFlags: No pgm_s",
732 pgm_a = panic "defaultDynFlags: No pgm_a",
733 pgm_l = panic "defaultDynFlags: No pgm_l",
734 pgm_dll = panic "defaultDynFlags: No pgm_dll",
735 pgm_T = panic "defaultDynFlags: No pgm_T",
736 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
737 pgm_windres = panic "defaultDynFlags: No pgm_windres",
738 pgm_lo = panic "defaultDynFlags: No pgm_lo",
739 pgm_lc = panic "defaultDynFlags: No pgm_lc",
740 -- end of initSysTools values
742 depMakefile = "Makefile",
743 depIncludePkgDeps = False,
746 -- end of ghc -M values
747 filesToClean = panic "defaultDynFlags: No filesToClean",
748 dirsToClean = panic "defaultDynFlags: No dirsToClean",
749 haddockOptions = Nothing,
750 flags = defaultFlags,
753 extensionFlags = flattenExtensionFlags Nothing [],
755 log_action = \severity srcSpan style msg ->
757 SevOutput -> printOutput (msg style)
758 SevInfo -> printErrs (msg style)
759 SevFatal -> printErrs (msg style)
762 printErrs ((mkLocMessage srcSpan msg) style)
763 -- careful (#2302): printErrs prints in UTF-8, whereas
764 -- converting to string first and using hPutStr would
765 -- just emit the low 8 bits of each unicode char.
769 Note [Verbosity levels]
770 ~~~~~~~~~~~~~~~~~~~~~~~
771 0 | print errors & warnings only
772 1 | minimal verbosity: print "compiling M ... done." for each module.
773 2 | equivalent to -dshow-passes
774 3 | equivalent to existing "ghc -v"
775 4 | "ghc -v -ddump-most"
776 5 | "ghc -v -ddump-all"
782 -- OnOffs accumulate in reverse order, so we use foldr in order to
783 -- process them in the right order
784 flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
786 flattenExtensionFlags ml = foldr f defaultExtensionFlags
787 where f (On f) flags = f : delete f flags
788 f (Off f) flags = delete f flags
789 defaultExtensionFlags = languageExtensions ml
791 languageExtensions :: Maybe Language -> [ExtensionFlag]
793 languageExtensions Nothing
794 -- Nothing => the default case
795 = Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
796 -- behaviour the default, to see if anyone notices
798 -- In due course I'd like Opt_MonoLocalBinds to be on by default
799 -- But NB it's implied by GADTs etc
800 -- SLPJ September 2010
801 : Opt_NondecreasingIndentation -- This has been on by default for some time
802 : languageExtensions (Just Haskell2010)
804 languageExtensions (Just Haskell98)
805 = [Opt_ImplicitPrelude,
806 Opt_MonomorphismRestriction,
808 Opt_DatatypeContexts]
810 languageExtensions (Just Haskell2010)
811 = [Opt_ImplicitPrelude,
812 Opt_MonomorphismRestriction,
813 Opt_DatatypeContexts,
815 Opt_ForeignFunctionInterface,
820 -- | Test whether a 'DynFlag' is set
821 dopt :: DynFlag -> DynFlags -> Bool
822 dopt f dflags = f `elem` (flags dflags)
825 dopt_set :: DynFlags -> DynFlag -> DynFlags
826 dopt_set dfs f = dfs{ flags = f : flags dfs }
828 -- | Unset a 'DynFlag'
829 dopt_unset :: DynFlags -> DynFlag -> DynFlags
830 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
832 -- | Test whether a 'ExtensionFlag' is set
833 xopt :: ExtensionFlag -> DynFlags -> Bool
834 xopt f dflags = f `elem` extensionFlags dflags
836 -- | Set a 'ExtensionFlag'
837 xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
839 = let onoffs = On f : extensions dfs
840 in dfs { extensions = onoffs,
841 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
843 -- | Unset a 'ExtensionFlag'
844 xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
846 = let onoffs = Off f : extensions dfs
847 in dfs { extensions = onoffs,
848 extensionFlags = flattenExtensionFlags (language dfs) onoffs }
850 setLanguage :: Language -> DynP ()
851 setLanguage l = upd f
852 where f dfs = let mLang = Just l
853 oneoffs = extensions dfs
856 extensionFlags = flattenExtensionFlags mLang oneoffs
859 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
860 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
861 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
862 -> [a] -- ^ Correctly ordered extracted options
863 getOpts dflags opts = reverse (opts dflags)
864 -- We add to the options from the front, so we need to reverse the list
866 -- | Gets the verbosity flag for the current verbosity level. This is fed to
867 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
868 getVerbFlag :: DynFlags -> String
870 | verbosity dflags >= 3 = "-v"
873 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
874 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
875 setPgmP, addOptl, addOptP,
876 addCmdlineFramework, addHaddockOpts
877 :: String -> DynFlags -> DynFlags
878 setOutputFile, setOutputHi, setDumpPrefixForce
879 :: Maybe String -> DynFlags -> DynFlags
881 setObjectDir f d = d{ objectDir = Just f}
882 setHiDir f d = d{ hiDir = Just f}
883 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
884 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
885 -- \#included from the .hc file when compiling with -fvia-C.
886 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
887 setDylibInstallName f d = d{ dylibInstallName = Just f}
889 setObjectSuf f d = d{ objectSuf = f}
890 setHiSuf f d = d{ hiSuf = f}
891 setHcSuf f d = d{ hcSuf = f}
893 setOutputFile f d = d{ outputFile = f}
894 setOutputHi f d = d{ outputHi = f}
896 parseDynLibLoaderMode f d =
898 ("deploy", "") -> d{ dynLibLoader = Deployable }
899 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
900 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
902 setDumpPrefixForce f d = d { dumpPrefixForce = f}
904 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
905 -- Config.hs should really use Option.
906 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
907 addOptl f d = d{ opt_l = f : opt_l d}
908 addOptP f d = d{ opt_P = f : opt_P d}
911 setDepMakefile :: FilePath -> DynFlags -> DynFlags
912 setDepMakefile f d = d { depMakefile = deOptDep f }
914 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
915 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
917 addDepExcludeMod :: String -> DynFlags -> DynFlags
919 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
921 addDepSuffix :: FilePath -> DynFlags -> DynFlags
922 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
925 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
926 -- we need to strip the "-optdep" off of the arg
927 deOptDep :: String -> String
928 deOptDep x = case stripPrefix "-optdep" x of
932 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
934 addHaddockOpts f d = d{ haddockOptions = Just f}
936 -- -----------------------------------------------------------------------------
937 -- Command-line options
939 -- | When invoking external tools as part of the compilation pipeline, we
940 -- pass these a sequence of options on the command-line. Rather than
941 -- just using a list of Strings, we use a type that allows us to distinguish
942 -- between filepaths and 'other stuff'. The reason for this is that
943 -- this type gives us a handle on transforming filenames, and filenames only,
944 -- to whatever format they're expected to be on a particular platform.
946 = FileOption -- an entry that _contains_ filename(s) / filepaths.
947 String -- a non-filepath prefix that shouldn't be
948 -- transformed (e.g., "/out=")
949 String -- the filepath/filename portion
952 showOpt :: Option -> String
953 showOpt (FileOption pre f) = pre ++ f
954 showOpt (Option s) = s
956 -----------------------------------------------------------------------------
957 -- Setting the optimisation level
959 updOptLevel :: Int -> DynFlags -> DynFlags
960 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
962 = dfs2{ optLevel = final_n }
964 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
965 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
966 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
968 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
969 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
971 -- -----------------------------------------------------------------------------
972 -- StgToDo: abstraction of stg-to-stg passes to run.
975 = StgDoMassageForProfiling -- should be (next to) last
976 -- There's also setStgVarInfo, but its absolute "lastness"
977 -- is so critical that it is hardwired in (no flag).
980 getStgToDo :: DynFlags -> [StgToDo]
984 stg_stats = dopt Opt_StgStats dflags
986 todo1 = if stg_stats then [D_stg_stats] else []
988 todo2 | WayProf `elem` wayNames dflags
989 = StgDoMassageForProfiling : todo1
993 {- **********************************************************************
997 %********************************************************************* -}
999 -- -----------------------------------------------------------------------------
1000 -- Parsing the dynamic flags.
1002 -- | Parse dynamic flags from a list of command line arguments. Returns the
1003 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1004 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1005 -- flags or missing arguments).
1006 parseDynamicFlags :: Monad m =>
1007 DynFlags -> [Located String]
1008 -> m (DynFlags, [Located String], [Located String])
1009 -- ^ Updated 'DynFlags', left-over arguments, and
1010 -- list of warnings.
1011 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1013 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1014 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1015 parseDynamicNoPackageFlags :: Monad m =>
1016 DynFlags -> [Located String]
1017 -> m (DynFlags, [Located String], [Located String])
1018 -- ^ Updated 'DynFlags', left-over arguments, and
1019 -- list of warnings.
1020 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1022 parseDynamicFlags_ :: Monad m =>
1023 DynFlags -> [Located String] -> Bool
1024 -> m (DynFlags, [Located String], [Located String])
1025 parseDynamicFlags_ dflags0 args pkg_flags = do
1026 -- XXX Legacy support code
1027 -- We used to accept things like
1028 -- optdep-f -optdepdepend
1029 -- optdep-f -optdep depend
1030 -- optdep -f -optdepdepend
1031 -- optdep -f -optdep depend
1032 -- but the spaces trip up proper argument handling. So get rid of them.
1033 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1034 f (x : xs) = x : f xs
1038 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1039 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1040 | otherwise = dynamic_flags
1042 let ((leftover, errs, warns), dflags1)
1043 = runCmdLine (processArgs flag_spec args') dflags0
1044 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1046 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1047 -- isn't up to the job. We know that if hscTarget == HscC, then the
1048 -- user has explicitly used -fvia-C, because -fasm is the default,
1049 -- unless there is no NCG on this platform. The latter case is
1050 -- checked when the -fPIC flag is parsed.
1052 let (pic_warns, dflags2)
1053 | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1054 = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1055 dflags1{ hscTarget = HscAsm })
1056 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
1057 | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
1058 = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
1059 ++ "dynamic on this platform;\n ignoring -fllvm"],
1060 dflags1{ hscTarget = HscAsm })
1062 | otherwise = ([], dflags1)
1064 return (dflags2, leftover, pic_warns ++ warns)
1067 {- **********************************************************************
1069 DynFlags specifications
1071 %********************************************************************* -}
1073 allFlags :: [String]
1074 allFlags = map ('-':) $
1075 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1076 map ("fno-"++) flags ++
1077 map ("f"++) flags ++
1078 map ("f"++) flags' ++
1079 map ("X"++) supportedExtensions
1080 where ok (PrefixPred _ _) = False
1082 flags = [ name | (name, _, _) <- fFlags ]
1083 flags' = [ name | (name, _, _) <- fLangFlags ]
1085 --------------- The main flags themselves ------------------
1086 dynamic_flags :: [Flag (CmdLineP DynFlags)]
1088 Flag "n" (NoArg (setDynFlag Opt_DryRun))
1089 , Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
1090 , Flag "F" (NoArg (setDynFlag Opt_Pp))
1092 (HasArg (\s -> do { addCmdlineHCInclude s
1093 ; addWarn "-#include and INCLUDE pragmas are deprecated: They no longer have any effect" }))
1094 , Flag "v" (OptIntSuffix setVerbosity)
1096 ------- Specific phases --------------------------------------------
1097 -- need to appear before -pgmL to be parsed as LLVM flags.
1098 , Flag "pgmlo" (hasArg (\f d -> d{ pgm_lo = (f,[])}))
1099 , Flag "pgmlc" (hasArg (\f d -> d{ pgm_lc = (f,[])}))
1100 , Flag "pgmL" (hasArg (\f d -> d{ pgm_L = f}))
1101 , Flag "pgmP" (hasArg setPgmP)
1102 , Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
1103 , Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
1104 , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
1105 , Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
1106 , Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
1107 , Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
1108 , Flag "pgmdll" (hasArg (\f d -> d{ pgm_dll = (f,[])}))
1109 , Flag "pgmwindres" (hasArg (\f d -> d{ pgm_windres = f}))
1111 -- need to appear before -optl/-opta to be parsed as LLVM flags.
1112 , Flag "optlo" (hasArg (\f d -> d{ opt_lo = f : opt_lo d}))
1113 , Flag "optlc" (hasArg (\f d -> d{ opt_lc = f : opt_lc d}))
1114 , Flag "optL" (hasArg (\f d -> d{ opt_L = f : opt_L d}))
1115 , Flag "optP" (hasArg addOptP)
1116 , Flag "optF" (hasArg (\f d -> d{ opt_F = f : opt_F d}))
1117 , Flag "optc" (hasArg (\f d -> d{ opt_c = f : opt_c d}))
1118 , Flag "optm" (hasArg (\f d -> d{ opt_m = f : opt_m d}))
1119 , Flag "opta" (hasArg (\f d -> d{ opt_a = f : opt_a d}))
1120 , Flag "optl" (hasArg addOptl)
1121 , Flag "optwindres" (hasArg (\f d -> d{ opt_windres = f : opt_windres d}))
1124 (NoArg (if can_split
1125 then setDynFlag Opt_SplitObjs
1126 else addWarn "ignoring -fsplit-objs"))
1128 -------- ghc -M -----------------------------------------------------
1129 , Flag "dep-suffix" (hasArg addDepSuffix)
1130 , Flag "optdep-s" (hasArgDF addDepSuffix "Use -dep-suffix instead")
1131 , Flag "dep-makefile" (hasArg setDepMakefile)
1132 , Flag "optdep-f" (hasArgDF setDepMakefile "Use -dep-makefile instead")
1133 , Flag "optdep-w" (NoArg (deprecate "doesn't do anything"))
1134 , Flag "include-pkg-deps" (noArg (setDepIncludePkgDeps True))
1135 , Flag "optdep--include-prelude" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1136 , Flag "optdep--include-pkg-deps" (noArgDF (setDepIncludePkgDeps True) "Use -include-pkg-deps instead")
1137 , Flag "exclude-module" (hasArg addDepExcludeMod)
1138 , Flag "optdep--exclude-module" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1139 , Flag "optdep-x" (hasArgDF addDepExcludeMod "Use -exclude-module instead")
1141 -------- Linking ----------------------------------------------------
1142 , Flag "no-link" (noArg (\d -> d{ ghcLink=NoLink }))
1143 , Flag "shared" (noArg (\d -> d{ ghcLink=LinkDynLib }))
1144 , Flag "dynload" (hasArg parseDynLibLoaderMode)
1145 , Flag "dylib-install-name" (hasArg setDylibInstallName)
1147 ------- Libraries ---------------------------------------------------
1148 , Flag "L" (Prefix addLibraryPath)
1149 , Flag "l" (AnySuffix (upd . addOptl))
1151 ------- Frameworks --------------------------------------------------
1152 -- -framework-path should really be -F ...
1153 , Flag "framework-path" (HasArg addFrameworkPath)
1154 , Flag "framework" (hasArg addCmdlineFramework)
1156 ------- Output Redirection ------------------------------------------
1157 , Flag "odir" (hasArg setObjectDir)
1158 , Flag "o" (SepArg (upd . setOutputFile . Just))
1159 , Flag "ohi" (hasArg (setOutputHi . Just ))
1160 , Flag "osuf" (hasArg setObjectSuf)
1161 , Flag "hcsuf" (hasArg setHcSuf)
1162 , Flag "hisuf" (hasArg setHiSuf)
1163 , Flag "hidir" (hasArg setHiDir)
1164 , Flag "tmpdir" (hasArg setTmpDir)
1165 , Flag "stubdir" (hasArg setStubDir)
1166 , Flag "outputdir" (hasArg setOutputDir)
1167 , Flag "ddump-file-prefix" (hasArg (setDumpPrefixForce . Just))
1169 ------- Keeping temporary files -------------------------------------
1170 -- These can be singular (think ghc -c) or plural (think ghc --make)
1171 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles))
1172 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
1173 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
1174 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
1175 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
1176 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
1177 , Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1178 , Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
1179 -- This only makes sense as plural
1180 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles))
1182 ------- Miscellaneous ----------------------------------------------
1183 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages))
1184 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain))
1185 , Flag "with-rtsopts" (HasArg setRtsOpts)
1186 , Flag "rtsopts" (NoArg (setRtsOptsEnabled RtsOptsAll))
1187 , Flag "rtsopts=all" (NoArg (setRtsOptsEnabled RtsOptsAll))
1188 , Flag "rtsopts=some" (NoArg (setRtsOptsEnabled RtsOptsSafeOnly))
1189 , Flag "rtsopts=none" (NoArg (setRtsOptsEnabled RtsOptsNone))
1190 , Flag "no-rtsopts" (NoArg (setRtsOptsEnabled RtsOptsNone))
1191 , Flag "main-is" (SepArg setMainIs)
1192 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock))
1193 , Flag "haddock-opts" (hasArg addHaddockOpts)
1194 , Flag "hpcdir" (SepArg setOptHpcDir)
1196 ------- recompilation checker --------------------------------------
1197 , Flag "recomp" (NoArg (do { unSetDynFlag Opt_ForceRecomp
1198 ; deprecate "Use -fno-force-recomp instead" }))
1199 , Flag "no-recomp" (NoArg (do { setDynFlag Opt_ForceRecomp
1200 ; deprecate "Use -fforce-recomp instead" }))
1202 ------ HsCpp opts ---------------------------------------------------
1203 , Flag "D" (AnySuffix (upd . addOptP))
1204 , Flag "U" (AnySuffix (upd . addOptP))
1206 ------- Include/Import Paths ----------------------------------------
1207 , Flag "I" (Prefix addIncludePath)
1208 , Flag "i" (OptPrefix addImportPath)
1210 ------ Debugging ----------------------------------------------------
1211 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
1213 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1214 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1215 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1216 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1217 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1218 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1219 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1220 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1221 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1222 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1223 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1224 , Flag "ddump-asm-regalloc-stages" (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1225 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1226 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1227 , Flag "ddump-llvm" (NoArg (do { setObjTarget HscLlvm
1228 ; setDumpFlag' Opt_D_dump_llvm}))
1229 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1230 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1231 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1232 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1233 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1234 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1235 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1236 , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
1237 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1238 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1239 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1240 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1241 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1242 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1243 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1244 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1245 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1246 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1247 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1248 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1249 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1250 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1251 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1252 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1253 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1254 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1255 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1256 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1257 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1258 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1259 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1260 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1261 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1262 ; setVerboseCore2Core }))
1263 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1264 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1265 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1266 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1267 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1268 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1269 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1270 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1271 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1272 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1273 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1274 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1275 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1276 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1277 , Flag "dshow-passes" (NoArg (do forceRecompile
1278 setVerbosity (Just 2)))
1279 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1281 ------ Machine dependant (-m<blah>) stuff ---------------------------
1283 , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
1284 , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
1285 , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
1286 , Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
1288 ------ Warning opts -------------------------------------------------
1289 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1290 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1291 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1292 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1293 , Flag "Wnot" (NoArg (do { mapM_ unSetDynFlag minusWallOpts
1294 ; deprecate "Use -w instead" }))
1295 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1297 ------ Optimisation flags ------------------------------------------
1298 , Flag "O" (noArg (setOptLevel 1))
1299 , Flag "Onot" (noArgDF (setOptLevel 0) "Use -O0 instead")
1300 , Flag "Odph" (noArg setDPHOpt)
1301 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1302 -- If the number is missing, use 1
1304 , Flag "fsimplifier-phases" (intSuffix (\n d -> d{ simplPhases = n }))
1305 , Flag "fmax-simplifier-iterations" (intSuffix (\n d -> d{ maxSimplIterations = n }))
1306 , Flag "fspec-constr-threshold" (intSuffix (\n d -> d{ specConstrThreshold = Just n }))
1307 , Flag "fno-spec-constr-threshold" (noArg (\d -> d{ specConstrThreshold = Nothing }))
1308 , Flag "fspec-constr-count" (intSuffix (\n d -> d{ specConstrCount = Just n }))
1309 , Flag "fno-spec-constr-count" (noArg (\d -> d{ specConstrCount = Nothing }))
1310 , Flag "fliberate-case-threshold" (intSuffix (\n d -> d{ liberateCaseThreshold = Just n }))
1311 , Flag "fno-liberate-case-threshold" (noArg (\d -> d{ liberateCaseThreshold = Nothing }))
1312 , Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
1313 , Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
1314 , Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
1315 , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
1316 , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
1318 ------ Profiling ----------------------------------------------------
1320 -- XXX Should the -f* flags be deprecated?
1321 -- They don't seem to be documented
1322 , Flag "fauto-sccs-on-all-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1323 , Flag "auto-all" (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1324 , Flag "no-auto-all" (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1325 , Flag "fauto-sccs-on-exported-toplevs" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1326 , Flag "auto" (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1327 , Flag "no-auto" (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1328 , Flag "fauto-sccs-on-individual-cafs" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1329 , Flag "caf-all" (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1330 , Flag "no-caf-all" (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1332 ------ DPH flags ----------------------------------------------------
1334 , Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
1335 , Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
1336 , Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
1337 , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
1339 ------ Compiler flags -----------------------------------------------
1341 , Flag "fasm" (NoArg (setObjTarget HscAsm))
1342 , Flag "fvia-c" (NoArg (setObjTarget HscC >>
1343 (addWarn "The -fvia-c flag will be removed in a future GHC release")))
1344 , Flag "fvia-C" (NoArg (setObjTarget HscC >>
1345 (addWarn "The -fvia-C flag will be removed in a future GHC release")))
1346 , Flag "fllvm" (NoArg (setObjTarget HscLlvm))
1348 , Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
1349 setTarget HscNothing))
1350 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
1351 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
1352 , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
1353 , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
1355 ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
1356 ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
1357 ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
1358 ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
1359 ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
1360 ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
1361 ++ map (mkFlag turnOn "X" setLanguage) languageFlags
1363 package_flags :: [Flag (CmdLineP DynFlags)]
1365 ------- Packages ----------------------------------------------------
1366 Flag "package-conf" (HasArg extraPkgConf_)
1367 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1368 , Flag "package-name" (hasArg setPackageName)
1369 , Flag "package-id" (HasArg exposePackageId)
1370 , Flag "package" (HasArg exposePackage)
1371 , Flag "hide-package" (HasArg hidePackage)
1372 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1373 , Flag "ignore-package" (HasArg ignorePackage)
1374 , Flag "syslib" (HasArg (\s -> do { exposePackage s
1375 ; deprecate "Use -package instead" }))
1378 type TurnOnFlag = Bool -- True <=> we are turning the flag on
1379 -- False <=> we are turning the flag off
1380 turnOn :: TurnOnFlag; turnOn = True
1381 turnOff :: TurnOnFlag; turnOff = False
1384 = ( String -- Flag in string form
1385 , flag -- Flag in internal form
1386 , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
1387 -- Typically, emit a warning or error
1389 mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
1390 -> String -- ^ The flag prefix
1391 -> (flag -> DynP ()) -- ^ What to do when the flag is found
1392 -> FlagSpec flag -- ^ Specification of this particular flag
1393 -> Flag (CmdLineP DynFlags)
1394 mkFlag turn_on flagPrefix f (name, flag, extra_action)
1395 = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
1397 deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
1398 deprecatedForExtension lang turn_on
1399 = deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1401 flag | turn_on = lang
1402 | otherwise = "No"++lang
1404 useInstead :: String -> TurnOnFlag -> DynP ()
1405 useInstead flag turn_on
1406 = deprecate ("Use -f" ++ no ++ flag ++ " instead")
1408 no = if turn_on then "" else "no-"
1410 nop :: TurnOnFlag -> DynP ()
1413 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1414 fFlags :: [FlagSpec DynFlag]
1416 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, nop ),
1417 ( "warn-dodgy-exports", Opt_WarnDodgyExports, nop ),
1418 ( "warn-dodgy-imports", Opt_WarnDodgyImports, nop ),
1419 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, nop ),
1420 ( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
1421 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
1422 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
1423 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
1424 ( "warn-missing-fields", Opt_WarnMissingFields, nop ),
1425 ( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
1426 ( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
1427 ( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
1428 ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
1429 ( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
1430 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
1431 ( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
1432 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
1433 ( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
1434 ( "warn-unused-imports", Opt_WarnUnusedImports, nop ),
1435 ( "warn-unused-matches", Opt_WarnUnusedMatches, nop ),
1436 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, nop ),
1437 ( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
1438 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
1439 ( "warn-orphans", Opt_WarnOrphans, nop ),
1440 ( "warn-identities", Opt_WarnIdentities, nop ),
1441 ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
1442 ( "warn-tabs", Opt_WarnTabs, nop ),
1443 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
1444 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
1445 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, nop ),
1446 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, nop ),
1447 ( "warn-alternative-layout-rule-transitional", Opt_WarnAlternativeLayoutRuleTransitional, nop ),
1448 ( "print-explicit-foralls", Opt_PrintExplicitForalls, nop ),
1449 ( "strictness", Opt_Strictness, nop ),
1450 ( "specialise", Opt_Specialise, nop ),
1451 ( "float-in", Opt_FloatIn, nop ),
1452 ( "static-argument-transformation", Opt_StaticArgumentTransformation, nop ),
1453 ( "full-laziness", Opt_FullLaziness, nop ),
1454 ( "liberate-case", Opt_LiberateCase, nop ),
1455 ( "spec-constr", Opt_SpecConstr, nop ),
1456 ( "cse", Opt_CSE, nop ),
1457 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, nop ),
1458 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, nop ),
1459 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, nop ),
1460 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, nop ),
1461 ( "ignore-asserts", Opt_IgnoreAsserts, nop ),
1462 ( "do-eta-reduction", Opt_DoEtaReduction, nop ),
1463 ( "case-merge", Opt_CaseMerge, nop ),
1464 ( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
1465 ( "method-sharing", Opt_MethodSharing,
1466 \_ -> deprecate "doesn't do anything any more"),
1467 -- Remove altogether in GHC 7.2
1468 ( "dicts-cheap", Opt_DictsCheap, nop ),
1469 ( "excess-precision", Opt_ExcessPrecision, nop ),
1470 ( "eager-blackholing", Opt_EagerBlackHoling, nop ),
1471 ( "asm-mangling", Opt_DoAsmMangling, nop ),
1472 ( "print-bind-result", Opt_PrintBindResult, nop ),
1473 ( "force-recomp", Opt_ForceRecomp, nop ),
1474 ( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
1475 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1476 ( "enable-rewrite-rules", Opt_EnableRewriteRules, nop ),
1477 ( "break-on-exception", Opt_BreakOnException, nop ),
1478 ( "break-on-error", Opt_BreakOnError, nop ),
1479 ( "print-evld-with-show", Opt_PrintEvldWithShow, nop ),
1480 ( "print-bind-contents", Opt_PrintBindContents, nop ),
1481 ( "run-cps", Opt_RunCPS, nop ),
1482 ( "run-cpsz", Opt_RunCPSZ, nop ),
1483 ( "new-codegen", Opt_TryNewCodeGen, nop ),
1484 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, nop ),
1485 ( "vectorise", Opt_Vectorise, nop ),
1486 ( "regs-graph", Opt_RegsGraph, nop ),
1487 ( "regs-iterative", Opt_RegsIterative, nop ),
1488 ( "gen-manifest", Opt_GenManifest, nop ),
1489 ( "embed-manifest", Opt_EmbedManifest, nop ),
1490 ( "ext-core", Opt_EmitExternalCore, nop ),
1491 ( "shared-implib", Opt_SharedImplib, nop ),
1492 ( "ghci-sandbox", Opt_GhciSandbox, nop ),
1493 ( "helpful-errors", Opt_HelpfulErrors, nop ),
1494 ( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
1495 ( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
1498 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1499 fLangFlags :: [FlagSpec ExtensionFlag]
1501 ( "th", Opt_TemplateHaskell,
1502 deprecatedForExtension "TemplateHaskell" >> checkTemplateHaskellOk ),
1503 ( "fi", Opt_ForeignFunctionInterface,
1504 deprecatedForExtension "ForeignFunctionInterface" ),
1505 ( "ffi", Opt_ForeignFunctionInterface,
1506 deprecatedForExtension "ForeignFunctionInterface" ),
1507 ( "arrows", Opt_Arrows,
1508 deprecatedForExtension "Arrows" ),
1509 ( "generics", Opt_Generics,
1510 deprecatedForExtension "Generics" ),
1511 ( "implicit-prelude", Opt_ImplicitPrelude,
1512 deprecatedForExtension "ImplicitPrelude" ),
1513 ( "bang-patterns", Opt_BangPatterns,
1514 deprecatedForExtension "BangPatterns" ),
1515 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1516 deprecatedForExtension "MonomorphismRestriction" ),
1517 ( "mono-pat-binds", Opt_MonoPatBinds,
1518 deprecatedForExtension "MonoPatBinds" ),
1519 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1520 deprecatedForExtension "ExtendedDefaultRules" ),
1521 ( "implicit-params", Opt_ImplicitParams,
1522 deprecatedForExtension "ImplicitParams" ),
1523 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1524 deprecatedForExtension "ScopedTypeVariables" ),
1525 ( "parr", Opt_ParallelArrays,
1526 deprecatedForExtension "ParallelArrays" ),
1527 ( "PArr", Opt_ParallelArrays,
1528 deprecatedForExtension "ParallelArrays" ),
1529 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1530 deprecatedForExtension "OverlappingInstances" ),
1531 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1532 deprecatedForExtension "UndecidableInstances" ),
1533 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1534 deprecatedForExtension "IncoherentInstances" )
1537 supportedLanguages :: [String]
1538 supportedLanguages = [ name | (name, _, _) <- languageFlags ]
1540 supportedExtensions :: [String]
1541 supportedExtensions = [ name' | (name, _, _) <- xFlags, name' <- [name, "No" ++ name] ]
1543 supportedLanguagesAndExtensions :: [String]
1544 supportedLanguagesAndExtensions = supportedLanguages ++ supportedExtensions
1546 -- | These -X<blah> flags cannot be reversed with -XNo<blah>
1547 languageFlags :: [FlagSpec Language]
1549 ( "Haskell98", Haskell98, nop ),
1550 ( "Haskell2010", Haskell2010, nop )
1553 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1554 xFlags :: [FlagSpec ExtensionFlag]
1556 ( "CPP", Opt_Cpp, nop ),
1557 ( "PostfixOperators", Opt_PostfixOperators, nop ),
1558 ( "TupleSections", Opt_TupleSections, nop ),
1559 ( "PatternGuards", Opt_PatternGuards, nop ),
1560 ( "UnicodeSyntax", Opt_UnicodeSyntax, nop ),
1561 ( "MagicHash", Opt_MagicHash, nop ),
1562 ( "PolymorphicComponents", Opt_PolymorphicComponents, nop ),
1563 ( "ExistentialQuantification", Opt_ExistentialQuantification, nop ),
1564 ( "KindSignatures", Opt_KindSignatures, nop ),
1565 ( "EmptyDataDecls", Opt_EmptyDataDecls, nop ),
1566 ( "ParallelListComp", Opt_ParallelListComp, nop ),
1567 ( "TransformListComp", Opt_TransformListComp, nop ),
1568 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, nop ),
1569 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, nop ),
1570 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, nop ),
1571 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
1572 ( "Rank2Types", Opt_Rank2Types, nop ),
1573 ( "RankNTypes", Opt_RankNTypes, nop ),
1574 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
1575 ( "TypeOperators", Opt_TypeOperators, nop ),
1576 ( "RecursiveDo", Opt_RecursiveDo,
1577 deprecatedForExtension "DoRec"),
1578 ( "DoRec", Opt_DoRec, nop ),
1579 ( "Arrows", Opt_Arrows, nop ),
1580 ( "ParallelArrays", Opt_ParallelArrays, nop ),
1581 ( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
1582 ( "QuasiQuotes", Opt_QuasiQuotes, nop ),
1583 ( "Generics", Opt_Generics, nop ),
1584 ( "ImplicitPrelude", Opt_ImplicitPrelude, nop ),
1585 ( "RecordWildCards", Opt_RecordWildCards, nop ),
1586 ( "NamedFieldPuns", Opt_RecordPuns, nop ),
1587 ( "RecordPuns", Opt_RecordPuns,
1588 deprecatedForExtension "NamedFieldPuns" ),
1589 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
1590 ( "OverloadedStrings", Opt_OverloadedStrings, nop ),
1591 ( "GADTs", Opt_GADTs, nop ),
1592 ( "GADTSyntax", Opt_GADTSyntax, nop ),
1593 ( "ViewPatterns", Opt_ViewPatterns, nop ),
1594 ( "TypeFamilies", Opt_TypeFamilies, nop ),
1595 ( "BangPatterns", Opt_BangPatterns, nop ),
1596 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
1597 ( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
1598 ( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
1599 ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
1600 ( "MonoPatBinds", Opt_MonoPatBinds, nop ),
1601 ( "ExplicitForAll", Opt_ExplicitForAll, nop ),
1602 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
1603 ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
1604 ( "DatatypeContexts", Opt_DatatypeContexts, nop ),
1605 ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
1606 ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
1607 ( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
1608 ( "RelaxedPolyRec", Opt_RelaxedPolyRec,
1609 \ turn_on -> if not turn_on
1610 then deprecate "You can't turn off RelaxedPolyRec any more"
1612 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, nop ),
1613 ( "ImplicitParams", Opt_ImplicitParams, nop ),
1614 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, nop ),
1616 ( "PatternSignatures", Opt_ScopedTypeVariables,
1617 deprecatedForExtension "ScopedTypeVariables" ),
1619 ( "UnboxedTuples", Opt_UnboxedTuples, nop ),
1620 ( "StandaloneDeriving", Opt_StandaloneDeriving, nop ),
1621 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, nop ),
1622 ( "DeriveFunctor", Opt_DeriveFunctor, nop ),
1623 ( "DeriveTraversable", Opt_DeriveTraversable, nop ),
1624 ( "DeriveFoldable", Opt_DeriveFoldable, nop ),
1625 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, nop ),
1626 ( "FlexibleContexts", Opt_FlexibleContexts, nop ),
1627 ( "FlexibleInstances", Opt_FlexibleInstances, nop ),
1628 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, nop ),
1629 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, nop ),
1630 ( "FunctionalDependencies", Opt_FunctionalDependencies, nop ),
1631 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, nop ),
1632 ( "OverlappingInstances", Opt_OverlappingInstances, nop ),
1633 ( "UndecidableInstances", Opt_UndecidableInstances, nop ),
1634 ( "IncoherentInstances", Opt_IncoherentInstances, nop ),
1635 ( "PackageImports", Opt_PackageImports, nop )
1638 defaultFlags :: [DynFlag]
1640 = [ Opt_AutoLinkPackages,
1641 Opt_ReadUserPackageConf,
1649 Opt_PrintBindContents,
1654 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
1655 -- The default -O0 options
1659 impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
1661 = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
1662 , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
1663 , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
1664 , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
1665 , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
1666 , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
1667 , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
1669 , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
1671 , (Opt_GADTs, turnOn, Opt_GADTSyntax)
1672 , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
1673 , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
1675 , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
1676 -- all over the place
1678 , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
1680 -- Record wild-cards implies field disambiguation
1681 -- Otherwise if you write (C {..}) you may well get
1682 -- stuff like " 'a' not in scope ", which is a bit silly
1683 -- if the compiler has just filled in field 'a' of constructor 'C'
1684 , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
1686 , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
1689 optLevelFlags :: [([Int], DynFlag)]
1691 = [ ([0], Opt_IgnoreInterfacePragmas)
1692 , ([0], Opt_OmitInterfacePragmas)
1694 , ([1,2], Opt_IgnoreAsserts)
1695 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
1697 , ([1,2], Opt_DoEtaReduction)
1698 , ([1,2], Opt_CaseMerge)
1699 , ([1,2], Opt_Strictness)
1701 , ([1,2], Opt_FullLaziness)
1702 , ([1,2], Opt_Specialise)
1703 , ([1,2], Opt_FloatIn)
1705 , ([2], Opt_LiberateCase)
1706 , ([2], Opt_SpecConstr)
1707 , ([2], Opt_RegsGraph)
1709 -- , ([2], Opt_StaticArgumentTransformation)
1710 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
1711 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
1712 -- several improvements to the heuristics, and I'm concerned that without
1713 -- those changes SAT will interfere with some attempts to write "high
1714 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
1715 -- this year. In particular, the version in HEAD lacks the tail call
1716 -- criterion, so many things that look like reasonable loops will be
1717 -- turned into functions with extra (unneccesary) thunk creation.
1719 , ([0,1,2], Opt_DoLambdaEtaExpansion)
1720 -- This one is important for a tiresome reason:
1721 -- we want to make sure that the bindings for data
1722 -- constructors are eta-expanded. This is probably
1723 -- a good thing anyway, but it seems fragile.
1726 -- -----------------------------------------------------------------------------
1727 -- Standard sets of warning options
1729 standardWarnings :: [DynFlag]
1731 = [ Opt_WarnWarningsDeprecations,
1732 Opt_WarnDeprecatedFlags,
1733 Opt_WarnUnrecognisedPragmas,
1734 Opt_WarnOverlappingPatterns,
1735 Opt_WarnMissingFields,
1736 Opt_WarnMissingMethods,
1737 Opt_WarnDuplicateExports,
1738 Opt_WarnLazyUnliftedBindings,
1739 Opt_WarnDodgyForeignImports,
1740 Opt_WarnWrongDoBind,
1741 Opt_WarnAlternativeLayoutRuleTransitional
1744 minusWOpts :: [DynFlag]
1746 = standardWarnings ++
1747 [ Opt_WarnUnusedBinds,
1748 Opt_WarnUnusedMatches,
1749 Opt_WarnUnusedImports,
1750 Opt_WarnIncompletePatterns,
1751 Opt_WarnDodgyExports,
1752 Opt_WarnDodgyImports
1755 minusWallOpts :: [DynFlag]
1758 [ Opt_WarnTypeDefaults,
1759 Opt_WarnNameShadowing,
1760 Opt_WarnMissingSigs,
1763 Opt_WarnUnusedDoBind,
1767 -- minuswRemovesOpts should be every warning option
1768 minuswRemovesOpts :: [DynFlag]
1771 [Opt_WarnImplicitPrelude,
1772 Opt_WarnIncompletePatternsRecUpd,
1773 Opt_WarnMonomorphism,
1774 Opt_WarnUnrecognisedPragmas,
1775 Opt_WarnAutoOrphans,
1779 enableGlasgowExts :: DynP ()
1780 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
1781 mapM_ setExtensionFlag glasgowExtsFlags
1783 disableGlasgowExts :: DynP ()
1784 disableGlasgowExts = do unSetDynFlag Opt_PrintExplicitForalls
1785 mapM_ unSetExtensionFlag glasgowExtsFlags
1787 glasgowExtsFlags :: [ExtensionFlag]
1788 glasgowExtsFlags = [
1789 Opt_ForeignFunctionInterface
1790 , Opt_UnliftedFFITypes
1791 , Opt_ImplicitParams
1792 , Opt_ScopedTypeVariables
1794 , Opt_TypeSynonymInstances
1795 , Opt_StandaloneDeriving
1796 , Opt_DeriveDataTypeable
1798 , Opt_DeriveFoldable
1799 , Opt_DeriveTraversable
1800 , Opt_FlexibleContexts
1801 , Opt_FlexibleInstances
1802 , Opt_ConstrainedClassMethods
1803 , Opt_MultiParamTypeClasses
1804 , Opt_FunctionalDependencies
1806 , Opt_PolymorphicComponents
1807 , Opt_ExistentialQuantification
1809 , Opt_PostfixOperators
1811 , Opt_LiberalTypeSynonyms
1815 , Opt_ParallelListComp
1816 , Opt_EmptyDataDecls
1817 , Opt_KindSignatures
1818 , Opt_GeneralizedNewtypeDeriving ]
1821 -- Consult the RTS to find whether GHC itself has been built profiled
1822 -- If so, you can't use Template Haskell
1823 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
1825 rtsIsProfiled :: Bool
1826 rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
1828 checkTemplateHaskellOk :: Bool -> DynP ()
1829 checkTemplateHaskellOk turn_on
1830 | turn_on && rtsIsProfiled
1831 = addErr "You can't use Template Haskell with a profiled compiler"
1835 -- In stage 1 we don't know that the RTS has rts_isProfiled,
1836 -- so we simply say "ok". It doesn't matter because TH isn't
1837 -- available in stage 1 anyway.
1838 checkTemplateHaskellOk turn_on = return ()
1841 {- **********************************************************************
1843 DynFlags constructors
1845 %********************************************************************* -}
1847 type DynP = EwM (CmdLineP DynFlags)
1849 upd :: (DynFlags -> DynFlags) -> DynP ()
1850 upd f = liftEwM (do { dfs <- getCmdLineState
1851 ; putCmdLineState $! (f dfs) })
1853 --------------- Constructor functions for OptKind -----------------
1854 noArg :: (DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1855 noArg fn = NoArg (upd fn)
1857 noArgDF :: (DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1858 noArgDF fn deprec = NoArg (upd fn >> deprecate deprec)
1860 hasArg :: (String -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1861 hasArg fn = HasArg (upd . fn)
1863 hasArgDF :: (String -> DynFlags -> DynFlags) -> String -> OptKind (CmdLineP DynFlags)
1864 hasArgDF fn deprec = HasArg (\s -> do { upd (fn s)
1865 ; deprecate deprec })
1867 intSuffix :: (Int -> DynFlags -> DynFlags) -> OptKind (CmdLineP DynFlags)
1868 intSuffix fn = IntSuffix (\n -> upd (fn n))
1870 setDumpFlag :: DynFlag -> OptKind (CmdLineP DynFlags)
1871 setDumpFlag dump_flag = NoArg (setDumpFlag' dump_flag)
1873 --------------------------
1874 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1875 setDynFlag f = upd (\dfs -> dopt_set dfs f)
1876 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1878 --------------------------
1879 setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
1880 setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
1883 deps = [ if turn_on then setExtensionFlag d
1884 else unSetExtensionFlag d
1885 | (f', turn_on, d) <- impliedFlags, f' == f ]
1886 -- When you set f, set the ones it implies
1887 -- NB: use setExtensionFlag recursively, in case the implied flags
1888 -- implies further flags
1890 unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
1891 -- When you un-set f, however, we don't un-set the things it implies
1892 -- (except for -fno-glasgow-exts, which is treated specially)
1894 --------------------------
1895 setDumpFlag' :: DynFlag -> DynP ()
1896 setDumpFlag' dump_flag
1897 = do { setDynFlag dump_flag
1898 ; when want_recomp forceRecompile }
1900 -- Certain dumpy-things are really interested in what's going
1901 -- on during recompilation checking, so in those cases we
1902 -- don't want to turn it off.
1903 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1904 Opt_D_dump_hi_diffs]
1906 forceRecompile :: DynP ()
1907 -- Whenver we -ddump, force recompilation (by switching off the
1908 -- recompilation checker), else you don't see the dump! However,
1909 -- don't switch it off in --make mode, else *everything* gets
1910 -- recompiled which probably isn't what you want
1911 forceRecompile = do { dfs <- liftEwM getCmdLineState
1912 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1914 force_recomp dfs = isOneShot (ghcMode dfs)
1916 setVerboseCore2Core :: DynP ()
1917 setVerboseCore2Core = do forceRecompile
1918 setDynFlag Opt_D_verbose_core2core
1919 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1922 setDumpSimplPhases :: String -> DynP ()
1923 setDumpSimplPhases s = do forceRecompile
1924 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1926 spec = case s of { ('=' : s') -> s'; _ -> s }
1928 setVerbosity :: Maybe Int -> DynP ()
1929 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1931 addCmdlineHCInclude :: String -> DynP ()
1932 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1934 extraPkgConf_ :: FilePath -> DynP ()
1935 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1937 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1939 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1941 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1943 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1945 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1947 setPackageName :: String -> DynFlags -> DynFlags
1948 setPackageName p s = s{ thisPackage = stringToPackageId p }
1950 -- If we're linking a binary, then only targets that produce object
1951 -- code are allowed (requests for other target types are ignored).
1952 setTarget :: HscTarget -> DynP ()
1953 setTarget l = upd set
1956 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1959 -- Changes the target only if we're compiling object code. This is
1960 -- used by -fasm and -fvia-C, which switch from one to the other, but
1961 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1962 -- can be safely used in an OPTIONS_GHC pragma.
1963 setObjTarget :: HscTarget -> DynP ()
1964 setObjTarget l = upd set
1967 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1970 setOptLevel :: Int -> DynFlags -> DynFlags
1971 setOptLevel n dflags
1972 | hscTarget dflags == HscInterpreted && n > 0
1974 -- not in IO any more, oh well:
1975 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1977 = updOptLevel n dflags
1980 -- -Odph is equivalent to
1982 -- -O2 optimise as much as possible
1983 -- -fmax-simplifier-iterations20 this is necessary sometimes
1984 -- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
1986 setDPHOpt :: DynFlags -> DynFlags
1987 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1991 -- Determines the package used by the vectoriser for the symbols of the vectorised code.
1992 -- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
1993 -- vectoriser cannot be used.
1995 data DPHBackend = DPHPar -- "dph-par"
1996 | DPHSeq -- "dph-seq"
1997 | DPHThis -- the currently compiled package
1998 | DPHNone -- no DPH library available
1999 deriving(Eq, Ord, Enum, Show)
2001 setDPHBackend :: DPHBackend -> DynP ()
2002 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
2004 -- Query the DPH backend package to be used by the vectoriser.
2006 dphPackage :: DynFlags -> PackageId
2008 = case dphBackend dflags of
2009 DPHPar -> dphParPackageId
2010 DPHSeq -> dphSeqPackageId
2011 DPHThis -> thisPackage dflags
2012 DPHNone -> ghcError (CmdLineError dphBackendError)
2014 dphBackendError :: String
2015 dphBackendError = "To use -fvectorise select a DPH backend with -fdph-par or -fdph-seq"
2017 setMainIs :: String -> DynP ()
2019 | not (null main_fn) && isLower (head main_fn)
2020 -- The arg looked like "Foo.Bar.baz"
2021 = upd $ \d -> d{ mainFunIs = Just main_fn,
2022 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
2024 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
2025 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
2027 | otherwise -- The arg looked like "baz"
2028 = upd $ \d -> d{ mainFunIs = Just arg }
2030 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
2032 -----------------------------------------------------------------------------
2033 -- Paths & Libraries
2035 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
2037 -- -i on its own deletes the import paths
2038 addImportPath "" = upd (\s -> s{importPaths = []})
2039 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
2043 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
2046 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
2048 addFrameworkPath p =
2049 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
2051 #ifndef mingw32_TARGET_OS
2052 split_marker :: Char
2053 split_marker = ':' -- not configurable (ToDo)
2056 splitPathList :: String -> [String]
2057 splitPathList s = filter notNull (splitUp s)
2058 -- empty paths are ignored: there might be a trailing
2059 -- ':' in the initial list, for example. Empty paths can
2060 -- cause confusion when they are translated into -I options
2061 -- for passing to gcc.
2063 #ifndef mingw32_TARGET_OS
2064 splitUp xs = split split_marker xs
2066 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
2068 -- That is, if "foo:bar:baz" is used, this interpreted as
2069 -- consisting of three entries, 'foo', 'bar', 'baz'.
2070 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
2071 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
2073 -- Notice that no attempt is made to fully replace the 'standard'
2074 -- split marker ':' with the Windows / DOS one, ';'. The reason being
2075 -- that this will cause too much breakage for users & ':' will
2076 -- work fine even with DOS paths, if you're not insisting on being silly.
2079 splitUp (x:':':div:xs) | div `elem` dir_markers
2080 = ((x:':':div:p): splitUp rs)
2082 (p,rs) = findNextPath xs
2083 -- we used to check for existence of the path here, but that
2084 -- required the IO monad to be threaded through the command-line
2085 -- parser which is quite inconvenient. The
2086 splitUp xs = cons p (splitUp rs)
2088 (p,rs) = findNextPath xs
2093 -- will be called either when we've consumed nought or the
2094 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
2095 -- finding the next split marker.
2097 case break (`elem` split_markers) xs of
2098 (p, _:ds) -> (p, ds)
2101 split_markers :: [Char]
2102 split_markers = [':', ';']
2104 dir_markers :: [Char]
2105 dir_markers = ['/', '\\']
2108 -- -----------------------------------------------------------------------------
2109 -- tmpDir, where we store temporary files.
2111 setTmpDir :: FilePath -> DynFlags -> DynFlags
2112 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
2113 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2114 -- seem necessary now --SDM 7/2/2008
2116 -----------------------------------------------------------------------------
2119 setRtsOpts :: String -> DynP ()
2120 setRtsOpts arg = upd $ \ d -> d {rtsOpts = Just arg}
2122 setRtsOptsEnabled :: RtsOptsEnabled -> DynP ()
2123 setRtsOptsEnabled arg = upd $ \ d -> d {rtsOptsEnabled = arg}
2125 -----------------------------------------------------------------------------
2128 setOptHpcDir :: String -> DynP ()
2129 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2131 -----------------------------------------------------------------------------
2132 -- Via-C compilation stuff
2134 -- There are some options that we need to pass to gcc when compiling
2135 -- Haskell code via C, but are only supported by recent versions of
2136 -- gcc. The configure script decides which of these options we need,
2137 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2138 -- read before each via-C compilation. The advantage of having these
2139 -- in a separate file is that the file can be created at install-time
2140 -- depending on the available gcc version, and even re-generated later
2141 -- if gcc is upgraded.
2143 -- The options below are not dependent on the version of gcc, only the
2146 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2147 [String]) -- for registerised HC compilations
2148 machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
2149 in (cCcOpts ++ flagsAll, flagsRegHc)
2151 machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
2152 [String]) -- for registerised HC compilations
2153 machdepCCOpts' _dflags
2154 #if alpha_TARGET_ARCH
2156 #ifdef HAVE_THREADED_RTS_SUPPORT
2160 -- For now, to suppress the gcc warning "call-clobbered
2161 -- register used for global register variable", we simply
2162 -- disable all warnings altogether using the -w flag. Oh well.
2164 #elif hppa_TARGET_ARCH
2165 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2166 -- (very nice, but too bad the HP /usr/include files don't agree.)
2167 = ( ["-D_HPUX_SOURCE"], [] )
2169 #elif m68k_TARGET_ARCH
2170 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2171 -- popping of args to routines to be explicit; if we let things
2172 -- be deferred 'til after an STGJUMP, imminent death is certain!
2174 -- -fomit-frame-pointer : *don't*
2175 -- It's better to have a6 completely tied up being a frame pointer
2176 -- rather than let GCC pick random things to do with it.
2177 -- (If we want to steal a6, then we would try to do things
2178 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2179 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2181 #elif i386_TARGET_ARCH
2182 -- -fno-defer-pop : basically the same game as for m68k
2184 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2185 -- the fp (%ebp) for our register maps.
2186 = let n_regs = stolen_x86_regs _dflags
2189 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2192 "-fomit-frame-pointer",
2193 -- we want -fno-builtin, because when gcc inlines
2194 -- built-in functions like memcpy() it tends to
2195 -- run out of registers, requiring -monly-n-regs
2197 "-DSTOLEN_X86_REGS="++show n_regs ]
2200 #elif ia64_TARGET_ARCH
2201 = ( [], ["-fomit-frame-pointer", "-G0"] )
2203 #elif x86_64_TARGET_ARCH
2206 ["-fomit-frame-pointer",
2207 "-fno-asynchronous-unwind-tables",
2208 -- the unwind tables are unnecessary for HC code,
2209 -- and get in the way of -split-objs. Another option
2210 -- would be to throw them away in the mangler, but this
2213 -- calling builtins like strlen() using the FFI can
2214 -- cause gcc to run out of regs, so use the external
2218 #elif sparc_TARGET_ARCH
2220 -- For now, to suppress the gcc warning "call-clobbered
2221 -- register used for global register variable", we simply
2222 -- disable all warnings altogether using the -w flag. Oh well.
2224 #elif powerpc_apple_darwin_TARGET
2226 -- Disable Apple's precompiling preprocessor. It's a great thing
2227 -- for "normal" programs, but it doesn't support register variable
2229 = ( [], ["-no-cpp-precomp"] )
2234 picCCOpts :: DynFlags -> [String]
2236 #if darwin_TARGET_OS
2237 -- Apple prefers to do things the other way round.
2238 -- PIC is on by default.
2239 -- -mdynamic-no-pic:
2240 -- Turn off PIC code generation.
2242 -- Don't generate "common" symbols - these are unwanted
2243 -- in dynamic libraries.
2246 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2248 = ["-mdynamic-no-pic"]
2249 #elif mingw32_TARGET_OS
2250 -- no -fPIC for Windows
2252 = ["-U __PIC__","-D__PIC__"]
2256 -- we need -fPIC for C files when we are compiling with -dynamic,
2257 -- otherwise things like stub.c files don't get compiled
2258 -- correctly. They need to reference data in the Haskell
2259 -- objects, but can't without -fPIC. See
2260 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/PositionIndependentCode
2261 | opt_PIC || not opt_Static
2262 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2267 -- -----------------------------------------------------------------------------
2271 can_split = cSplitObjs == "YES"
2273 -- -----------------------------------------------------------------------------
2276 data Printable = String String
2277 | FromDynFlags (DynFlags -> String)
2279 compilerInfo :: [(String, Printable)]
2280 compilerInfo = [("Project name", String cProjectName),
2281 ("Project version", String cProjectVersion),
2282 ("Booter version", String cBooterVersion),
2283 ("Stage", String cStage),
2284 ("Build platform", String cBuildPlatformString),
2285 ("Host platform", String cHostPlatformString),
2286 ("Target platform", String cTargetPlatformString),
2287 ("Have interpreter", String cGhcWithInterpreter),
2288 ("Object splitting", String cSplitObjs),
2289 ("Have native code generator", String cGhcWithNativeCodeGen),
2290 ("Support SMP", String cGhcWithSMP),
2291 ("Unregisterised", String cGhcUnregisterised),
2292 ("Tables next to code", String cGhcEnableTablesNextToCode),
2293 ("RTS ways", String cGhcRTSWays),
2294 ("Leading underscore", String cLeadingUnderscore),
2295 ("Debug on", String (show debugIsOn)),
2296 ("LibDir", FromDynFlags topDir),
2297 ("Global Package DB", FromDynFlags systemPackageConfig),
2298 ("C compiler flags", String (show cCcOpts)),
2299 ("Linker flags", String (show cLdOpts))