ghc-6.12.3: The GHC APISource codeContentsIndex
DynFlags
Contents
Dynamic flags and associated configuration types
Manipulating DynFlags
Parsing DynFlags
DynFlag C compiler options
Configuration of the core-to-core passes
Configuration of the stg-to-stg passes
Compiler configuration suitable for display to the user
Description

Dynamic flags

(c) The University of Glasgow 2005

Synopsis
data DynFlag
= Opt_D_dump_cmm
| Opt_D_dump_cmmz
| Opt_D_dump_cmmz_pretty
| Opt_D_dump_cps_cmm
| Opt_D_dump_cvt_cmm
| Opt_D_dump_asm
| Opt_D_dump_asm_native
| Opt_D_dump_asm_liveness
| Opt_D_dump_asm_coalesce
| Opt_D_dump_asm_regalloc
| Opt_D_dump_asm_regalloc_stages
| Opt_D_dump_asm_conflicts
| Opt_D_dump_asm_stats
| Opt_D_dump_asm_expanded
| Opt_D_dump_cpranal
| Opt_D_dump_deriv
| Opt_D_dump_ds
| Opt_D_dump_flatC
| Opt_D_dump_foreign
| Opt_D_dump_inlinings
| Opt_D_dump_rule_firings
| Opt_D_dump_occur_anal
| Opt_D_dump_parsed
| Opt_D_dump_rn
| Opt_D_dump_simpl
| Opt_D_dump_simpl_iterations
| Opt_D_dump_simpl_phases
| Opt_D_dump_spec
| Opt_D_dump_prep
| Opt_D_dump_stg
| Opt_D_dump_stranal
| Opt_D_dump_tc
| Opt_D_dump_types
| Opt_D_dump_rules
| Opt_D_dump_cse
| Opt_D_dump_worker_wrapper
| Opt_D_dump_rn_trace
| Opt_D_dump_rn_stats
| Opt_D_dump_opt_cmm
| Opt_D_dump_simpl_stats
| Opt_D_dump_tc_trace
| Opt_D_dump_if_trace
| Opt_D_dump_splices
| Opt_D_dump_BCOs
| Opt_D_dump_vect
| Opt_D_dump_hpc
| Opt_D_dump_rtti
| Opt_D_source_stats
| Opt_D_verbose_core2core
| Opt_D_verbose_stg2stg
| Opt_D_dump_hi
| Opt_D_dump_hi_diffs
| Opt_D_dump_minimal_imports
| Opt_D_dump_mod_cycles
| Opt_D_dump_view_pattern_commoning
| Opt_D_faststring_stats
| Opt_DumpToFile
| Opt_D_no_debug_output
| Opt_DoCoreLinting
| Opt_DoStgLinting
| Opt_DoCmmLinting
| Opt_DoAsmLinting
| Opt_WarnIsError
| Opt_WarnDuplicateExports
| Opt_WarnHiShadows
| Opt_WarnImplicitPrelude
| Opt_WarnIncompletePatterns
| Opt_WarnIncompletePatternsRecUpd
| Opt_WarnMissingFields
| Opt_WarnMissingMethods
| Opt_WarnMissingSigs
| Opt_WarnNameShadowing
| Opt_WarnOverlappingPatterns
| Opt_WarnSimplePatterns
| Opt_WarnTypeDefaults
| Opt_WarnMonomorphism
| Opt_WarnUnusedBinds
| Opt_WarnUnusedImports
| Opt_WarnUnusedMatches
| Opt_WarnWarningsDeprecations
| Opt_WarnDeprecatedFlags
| Opt_WarnDodgyExports
| Opt_WarnDodgyImports
| Opt_WarnOrphans
| Opt_WarnTabs
| Opt_WarnUnrecognisedPragmas
| Opt_WarnDodgyForeignImports
| Opt_WarnLazyUnliftedBindings
| Opt_WarnUnusedDoBind
| Opt_WarnWrongDoBind
| Opt_OverlappingInstances
| Opt_UndecidableInstances
| Opt_IncoherentInstances
| Opt_MonomorphismRestriction
| Opt_MonoPatBinds
| Opt_MonoLocalBinds
| Opt_ExtendedDefaultRules
| Opt_ForeignFunctionInterface
| Opt_UnliftedFFITypes
| Opt_GHCForeignImportPrim
| Opt_PArr
| Opt_Arrows
| Opt_TemplateHaskell
| Opt_QuasiQuotes
| Opt_ImplicitParams
| Opt_Generics
| Opt_ImplicitPrelude
| Opt_ScopedTypeVariables
| Opt_UnboxedTuples
| Opt_BangPatterns
| Opt_TypeFamilies
| Opt_OverloadedStrings
| Opt_DisambiguateRecordFields
| Opt_RecordWildCards
| Opt_RecordPuns
| Opt_ViewPatterns
| Opt_GADTs
| Opt_RelaxedPolyRec
| Opt_NPlusKPatterns
| Opt_StandaloneDeriving
| Opt_DeriveDataTypeable
| Opt_DeriveFunctor
| Opt_DeriveTraversable
| Opt_DeriveFoldable
| Opt_TypeSynonymInstances
| Opt_FlexibleContexts
| Opt_FlexibleInstances
| Opt_ConstrainedClassMethods
| Opt_MultiParamTypeClasses
| Opt_FunctionalDependencies
| Opt_UnicodeSyntax
| Opt_PolymorphicComponents
| Opt_ExistentialQuantification
| Opt_MagicHash
| Opt_EmptyDataDecls
| Opt_KindSignatures
| Opt_ParallelListComp
| Opt_TransformListComp
| Opt_GeneralizedNewtypeDeriving
| Opt_RecursiveDo
| Opt_DoRec
| Opt_PostfixOperators
| Opt_TupleSections
| Opt_PatternGuards
| Opt_LiberalTypeSynonyms
| Opt_Rank2Types
| Opt_RankNTypes
| Opt_ImpredicativeTypes
| Opt_TypeOperators
| Opt_PackageImports
| Opt_NewQualifiedOperators
| Opt_ExplicitForAll
| Opt_PrintExplicitForalls
| Opt_Strictness
| Opt_FullLaziness
| Opt_StaticArgumentTransformation
| Opt_CSE
| Opt_LiberateCase
| Opt_SpecConstr
| Opt_IgnoreInterfacePragmas
| Opt_OmitInterfacePragmas
| Opt_DoLambdaEtaExpansion
| Opt_IgnoreAsserts
| Opt_DoEtaReduction
| Opt_CaseMerge
| Opt_UnboxStrictFields
| Opt_MethodSharing
| Opt_DictsCheap
| Opt_InlineIfEnoughArgs
| Opt_EnableRewriteRules
| Opt_Vectorise
| Opt_RegsGraph
| Opt_RegsIterative
| Opt_AutoSccsOnAllToplevs
| Opt_AutoSccsOnExportedToplevs
| Opt_AutoSccsOnIndividualCafs
| Opt_Cpp
| Opt_Pp
| Opt_ForceRecomp
| Opt_DryRun
| Opt_DoAsmMangling
| Opt_ExcessPrecision
| Opt_EagerBlackHoling
| Opt_ReadUserPackageConf
| Opt_NoHsMain
| Opt_RtsOptsEnabled
| Opt_SplitObjs
| Opt_StgStats
| Opt_HideAllPackages
| Opt_PrintBindResult
| Opt_Haddock
| Opt_HaddockOptions
| Opt_Hpc_No_Auto
| Opt_BreakOnException
| Opt_BreakOnError
| Opt_PrintEvldWithShow
| Opt_PrintBindContents
| Opt_GenManifest
| Opt_EmbedManifest
| Opt_EmitExternalCore
| Opt_SharedImplib
| Opt_BuildingCabalPackage
| Opt_RunCPS
| Opt_RunCPSZ
| Opt_ConvertToZipCfgAndBack
| Opt_AutoLinkPackages
| Opt_ImplicitImportQualified
| Opt_TryNewCodeGen
| Opt_KeepHiDiffs
| Opt_KeepHcFiles
| Opt_KeepSFiles
| Opt_KeepRawSFiles
| Opt_KeepTmpFiles
| Opt_KeepRawTokenStream
data DynFlags = DynFlags {
ghcMode :: GhcMode
ghcLink :: GhcLink
coreToDo :: Maybe [CoreToDo]
stgToDo :: Maybe [StgToDo]
hscTarget :: HscTarget
hscOutName :: String
extCoreName :: String
verbosity :: Int
optLevel :: Int
simplPhases :: Int
maxSimplIterations :: Int
shouldDumpSimplPhase :: SimplifierMode -> Bool
ruleCheck :: Maybe String
specConstrThreshold :: Maybe Int
specConstrCount :: Maybe Int
liberateCaseThreshold :: Maybe Int
targetPlatform :: Platform
stolen_x86_regs :: Int
cmdlineHcIncludes :: [String]
importPaths :: [FilePath]
mainModIs :: Module
mainFunIs :: Maybe String
ctxtStkDepth :: Int
dphBackend :: DPHBackend
thisPackage :: PackageId
ways :: [Way]
buildTag :: String
rtsBuildTag :: String
splitInfo :: Maybe (String, Int)
objectDir :: Maybe String
hiDir :: Maybe String
stubDir :: Maybe String
objectSuf :: String
hcSuf :: String
hiSuf :: String
outputFile :: Maybe String
outputHi :: Maybe String
dynLibLoader :: DynLibLoader
dumpPrefix :: Maybe FilePath
dumpPrefixForce :: Maybe FilePath
includePaths :: [String]
libraryPaths :: [String]
frameworkPaths :: [String]
cmdlineFrameworks :: [String]
tmpDir :: String
ghcUsagePath :: FilePath
ghciUsagePath :: FilePath
hpcDir :: String
opt_L :: [String]
opt_P :: [String]
opt_F :: [String]
opt_c :: [String]
opt_m :: [String]
opt_a :: [String]
opt_l :: [String]
opt_windres :: [String]
pgm_L :: String
pgm_P :: (String, [Option])
pgm_F :: String
pgm_c :: (String, [Option])
pgm_m :: (String, [Option])
pgm_s :: (String, [Option])
pgm_a :: (String, [Option])
pgm_l :: (String, [Option])
pgm_dll :: (String, [Option])
pgm_T :: String
pgm_sysman :: String
pgm_windres :: String
depMakefile :: FilePath
depIncludePkgDeps :: Bool
depExcludeMods :: [ModuleName]
depSuffixes :: [String]
extraPkgConfs :: [FilePath]
topDir :: FilePath
systemPackageConfig :: FilePath
packageFlags :: [PackageFlag]
pkgDatabase :: Maybe [PackageConfig]
pkgState :: PackageState
filesToClean :: IORef [FilePath]
dirsToClean :: IORef (FiniteMap FilePath FilePath)
flags :: [DynFlag]
log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO ()
haddockOptions :: Maybe String
}
data HscTarget
= HscC
| HscAsm
| HscJava
| HscInterpreted
| HscNothing
isObjectTarget :: HscTarget -> Bool
defaultObjectTarget :: HscTarget
data GhcMode
= CompManager
| OneShot
| MkDepend
isOneShot :: GhcMode -> Bool
data GhcLink
= NoLink
| LinkBinary
| LinkInMemory
| LinkDynLib
isNoLink :: GhcLink -> Bool
data PackageFlag
= ExposePackage String
| ExposePackageId String
| HidePackage String
| IgnorePackage String
data Option
= FileOption String String
| Option String
showOpt :: Option -> String
data DynLibLoader
= Deployable
| Wrapped (Maybe String)
| SystemDependent
fFlags :: [(String, DynFlag, Bool -> Deprecated)]
xFlags :: [(String, DynFlag, Bool -> Deprecated)]
dphPackage :: DynFlags -> PackageId
wayNames :: DynFlags -> [WayName]
defaultDynFlags :: DynFlags
initDynFlags :: DynFlags -> IO DynFlags
dopt :: DynFlag -> DynFlags -> Bool
dopt_set :: DynFlags -> DynFlag -> DynFlags
dopt_unset :: DynFlags -> DynFlag -> DynFlags
getOpts :: DynFlags -> (DynFlags -> [a]) -> [a]
getVerbFlag :: DynFlags -> String
updOptLevel :: Int -> DynFlags -> DynFlags
setTmpDir :: FilePath -> DynFlags -> DynFlags
setPackageName :: String -> DynFlags -> DynFlags
doingTickyProfiling :: DynFlags -> Bool
parseDynamicFlags :: Monad m => DynFlags -> [Located String] -> m (DynFlags, [Located String], [Located String])
parseDynamicNoPackageFlags :: Monad m => DynFlags -> [Located String] -> m (DynFlags, [Located String], [Located String])
allFlags :: [String]
supportedLanguages :: [String]
languageOptions :: [DynFlag]
machdepCCOpts :: DynFlags -> ([String], [String])
picCCOpts :: DynFlags -> [String]
data CoreToDo
= CoreDoSimplify SimplifierMode [SimplifierSwitch]
| CoreDoFloatInwards
| CoreDoFloatOutwards FloatOutSwitches
| CoreLiberateCase
| CoreDoPrintCore
| CoreDoStaticArgs
| CoreDoStrictness
| CoreDoWorkerWrapper
| CoreDoSpecialising
| CoreDoSpecConstr
| CoreDoOldStrictness
| CoreDoGlomBinds
| CoreCSE
| CoreDoRuleCheck Int String
| CoreDoVectorisation PackageId
| CoreDoNothing
| CoreDoPasses [CoreToDo]
data SimplifierMode
= SimplGently
| SimplPhase Int [String]
data SimplifierSwitch
= MaxSimplifierIterations Int
| NoCaseOfCase
data FloatOutSwitches = FloatOutSwitches {
floatOutLambdas :: Bool
floatOutConstants :: Bool
}
getCoreToDo :: DynFlags -> [CoreToDo]
data StgToDo
= StgDoMassageForProfiling
| D_stg_stats
getStgToDo :: DynFlags -> [StgToDo]
data Printable
= String String
| FromDynFlags (DynFlags -> String)
compilerInfo :: [(String, Printable)]
Dynamic flags and associated configuration types
data DynFlag Source
Enumerates the simple on-or-off dynamic flags
Constructors
Opt_D_dump_cmm
Opt_D_dump_cmmz
Opt_D_dump_cmmz_pretty
Opt_D_dump_cps_cmm
Opt_D_dump_cvt_cmm
Opt_D_dump_asm
Opt_D_dump_asm_native
Opt_D_dump_asm_liveness
Opt_D_dump_asm_coalesce
Opt_D_dump_asm_regalloc
Opt_D_dump_asm_regalloc_stages
Opt_D_dump_asm_conflicts
Opt_D_dump_asm_stats
Opt_D_dump_asm_expanded
Opt_D_dump_cpranal
Opt_D_dump_deriv
Opt_D_dump_ds
Opt_D_dump_flatC
Opt_D_dump_foreign
Opt_D_dump_inlinings
Opt_D_dump_rule_firings
Opt_D_dump_occur_anal
Opt_D_dump_parsed
Opt_D_dump_rn
Opt_D_dump_simpl
Opt_D_dump_simpl_iterations
Opt_D_dump_simpl_phases
Opt_D_dump_spec
Opt_D_dump_prep
Opt_D_dump_stg
Opt_D_dump_stranal
Opt_D_dump_tc
Opt_D_dump_types
Opt_D_dump_rules
Opt_D_dump_cse
Opt_D_dump_worker_wrapper
Opt_D_dump_rn_trace
Opt_D_dump_rn_stats
Opt_D_dump_opt_cmm
Opt_D_dump_simpl_stats
Opt_D_dump_tc_trace
Opt_D_dump_if_trace
Opt_D_dump_splices
Opt_D_dump_BCOs
Opt_D_dump_vect
Opt_D_dump_hpc
Opt_D_dump_rtti
Opt_D_source_stats
Opt_D_verbose_core2core
Opt_D_verbose_stg2stg
Opt_D_dump_hi
Opt_D_dump_hi_diffs
Opt_D_dump_minimal_imports
Opt_D_dump_mod_cycles
Opt_D_dump_view_pattern_commoning
Opt_D_faststring_stats
Opt_DumpToFileAppend dump output to files instead of stdout.
Opt_D_no_debug_output
Opt_DoCoreLinting
Opt_DoStgLinting
Opt_DoCmmLinting
Opt_DoAsmLinting
Opt_WarnIsError
Opt_WarnDuplicateExports
Opt_WarnHiShadows
Opt_WarnImplicitPrelude
Opt_WarnIncompletePatterns
Opt_WarnIncompletePatternsRecUpd
Opt_WarnMissingFields
Opt_WarnMissingMethods
Opt_WarnMissingSigs
Opt_WarnNameShadowing
Opt_WarnOverlappingPatterns
Opt_WarnSimplePatterns
Opt_WarnTypeDefaults
Opt_WarnMonomorphism
Opt_WarnUnusedBinds
Opt_WarnUnusedImports
Opt_WarnUnusedMatches
Opt_WarnWarningsDeprecations
Opt_WarnDeprecatedFlags
Opt_WarnDodgyExports
Opt_WarnDodgyImports
Opt_WarnOrphans
Opt_WarnTabs
Opt_WarnUnrecognisedPragmas
Opt_WarnDodgyForeignImports
Opt_WarnLazyUnliftedBindings
Opt_WarnUnusedDoBind
Opt_WarnWrongDoBind
Opt_OverlappingInstances
Opt_UndecidableInstances
Opt_IncoherentInstances
Opt_MonomorphismRestriction
Opt_MonoPatBinds
Opt_MonoLocalBinds
Opt_ExtendedDefaultRules
Opt_ForeignFunctionInterface
Opt_UnliftedFFITypes
Opt_GHCForeignImportPrim
Opt_PArr
Opt_Arrows
Opt_TemplateHaskell
Opt_QuasiQuotes
Opt_ImplicitParams
Opt_Generics
Opt_ImplicitPrelude
Opt_ScopedTypeVariables
Opt_UnboxedTuples
Opt_BangPatterns
Opt_TypeFamilies
Opt_OverloadedStrings
Opt_DisambiguateRecordFields
Opt_RecordWildCards
Opt_RecordPuns
Opt_ViewPatterns
Opt_GADTs
Opt_RelaxedPolyRec
Opt_NPlusKPatterns
Opt_StandaloneDeriving
Opt_DeriveDataTypeable
Opt_DeriveFunctor
Opt_DeriveTraversable
Opt_DeriveFoldable
Opt_TypeSynonymInstances
Opt_FlexibleContexts
Opt_FlexibleInstances
Opt_ConstrainedClassMethods
Opt_MultiParamTypeClasses
Opt_FunctionalDependencies
Opt_UnicodeSyntax
Opt_PolymorphicComponents
Opt_ExistentialQuantification
Opt_MagicHash
Opt_EmptyDataDecls
Opt_KindSignatures
Opt_ParallelListComp
Opt_TransformListComp
Opt_GeneralizedNewtypeDeriving
Opt_RecursiveDo
Opt_DoRec
Opt_PostfixOperators
Opt_TupleSections
Opt_PatternGuards
Opt_LiberalTypeSynonyms
Opt_Rank2Types
Opt_RankNTypes
Opt_ImpredicativeTypes
Opt_TypeOperators
Opt_PackageImports
Opt_NewQualifiedOperators
Opt_ExplicitForAll
Opt_PrintExplicitForalls
Opt_Strictness
Opt_FullLaziness
Opt_StaticArgumentTransformation
Opt_CSE
Opt_LiberateCase
Opt_SpecConstr
Opt_IgnoreInterfacePragmas
Opt_OmitInterfacePragmas
Opt_DoLambdaEtaExpansion
Opt_IgnoreAsserts
Opt_DoEtaReduction
Opt_CaseMerge
Opt_UnboxStrictFields
Opt_MethodSharing
Opt_DictsCheap
Opt_InlineIfEnoughArgs
Opt_EnableRewriteRules
Opt_Vectorise
Opt_RegsGraph
Opt_RegsIterative
Opt_AutoSccsOnAllToplevs
Opt_AutoSccsOnExportedToplevs
Opt_AutoSccsOnIndividualCafs
Opt_Cpp
Opt_Pp
Opt_ForceRecomp
Opt_DryRun
Opt_DoAsmMangling
Opt_ExcessPrecision
Opt_EagerBlackHoling
Opt_ReadUserPackageConf
Opt_NoHsMain
Opt_RtsOptsEnabled
Opt_SplitObjs
Opt_StgStats
Opt_HideAllPackages
Opt_PrintBindResult
Opt_Haddock
Opt_HaddockOptions
Opt_Hpc_No_Auto
Opt_BreakOnException
Opt_BreakOnError
Opt_PrintEvldWithShow
Opt_PrintBindContents
Opt_GenManifest
Opt_EmbedManifest
Opt_EmitExternalCore
Opt_SharedImplib
Opt_BuildingCabalPackage
Opt_RunCPS
Opt_RunCPSZ
Opt_ConvertToZipCfgAndBack
Opt_AutoLinkPackages
Opt_ImplicitImportQualified
Opt_TryNewCodeGen
Opt_KeepHiDiffs
Opt_KeepHcFiles
Opt_KeepSFiles
Opt_KeepRawSFiles
Opt_KeepTmpFiles
Opt_KeepRawTokenStream
show/hide Instances
data DynFlags Source
Contains not only a collection of DynFlags but also a plethora of information relating to the compilation of a single file or GHC session
Constructors
DynFlags
ghcMode :: GhcMode
ghcLink :: GhcLink
coreToDo :: Maybe [CoreToDo]
stgToDo :: Maybe [StgToDo]
hscTarget :: HscTarget
hscOutName :: StringName of the output file
extCoreName :: StringName of the .hcr output file
verbosity :: IntVerbosity level: see DynFlags
optLevel :: IntOptimisation level
simplPhases :: IntNumber of simplifier phases
maxSimplIterations :: IntMax simplifier iterations
shouldDumpSimplPhase :: SimplifierMode -> Bool
ruleCheck :: Maybe String
specConstrThreshold :: Maybe IntThreshold for SpecConstr
specConstrCount :: Maybe IntMax number of specialisations for any one function
liberateCaseThreshold :: Maybe IntThreshold for LiberateCase
targetPlatform :: PlatformThe platform we're compiling for. Used by the NCG.
stolen_x86_regs :: Int
cmdlineHcIncludes :: [String]
-#includes
importPaths :: [FilePath]
mainModIs :: Module
mainFunIs :: Maybe String
ctxtStkDepth :: IntTypechecker context stack depth
dphBackend :: DPHBackend
thisPackage :: PackageIdname of package currently being compiled
ways :: [Way]Way flags from the command line
buildTag :: StringThe global "way" (e.g. "p" for prof)
rtsBuildTag :: StringThe RTS "way"
splitInfo :: Maybe (String, Int)
objectDir :: Maybe String
hiDir :: Maybe String
stubDir :: Maybe String
objectSuf :: String
hcSuf :: String
hiSuf :: String
outputFile :: Maybe String
outputHi :: Maybe String
dynLibLoader :: DynLibLoader
dumpPrefix :: Maybe FilePathThis is set by DriverPipeline.runPipeline based on where its output is going.
dumpPrefixForce :: Maybe FilePathOverride the dumpPrefix set by DriverPipeline.runPipeline. Set by -ddump-file-prefix
includePaths :: [String]
libraryPaths :: [String]
frameworkPaths :: [String]
cmdlineFrameworks :: [String]
tmpDir :: String
ghcUsagePath :: FilePath
ghciUsagePath :: FilePath
hpcDir :: StringPath to store the .mix files
opt_L :: [String]
opt_P :: [String]
opt_F :: [String]
opt_c :: [String]
opt_m :: [String]
opt_a :: [String]
opt_l :: [String]
opt_windres :: [String]
pgm_L :: String
pgm_P :: (String, [Option])
pgm_F :: String
pgm_c :: (String, [Option])
pgm_m :: (String, [Option])
pgm_s :: (String, [Option])
pgm_a :: (String, [Option])
pgm_l :: (String, [Option])
pgm_dll :: (String, [Option])
pgm_T :: String
pgm_sysman :: String
pgm_windres :: String
depMakefile :: FilePath
depIncludePkgDeps :: Bool
depExcludeMods :: [ModuleName]
depSuffixes :: [String]
extraPkgConfs :: [FilePath]
topDir :: FilePath
systemPackageConfig :: FilePathThe -package-conf flags given on the command line, in the order they appeared.
packageFlags :: [PackageFlag]The -package and -hide-package flags from the command-line
pkgDatabase :: Maybe [PackageConfig]
pkgState :: PackageState
filesToClean :: IORef [FilePath]
dirsToClean :: IORef (FiniteMap FilePath FilePath)
flags :: [DynFlag]
log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO ()Message output action: use ErrUtils instead of this if you can
haddockOptions :: Maybe String
data HscTarget Source

The target code type of the compilation (if any).

Whenever you change the target, also make sure to set ghcLink to something sensible.

HscNothing can be used to avoid generating any output, however, note that:

  • This will not run the desugaring step, thus no warnings generated in this step will be output. In particular, this includes warnings related to pattern matching. You can run the desugarer manually using GHC.desugarModule.
  • If a program uses Template Haskell the typechecker may try to run code from an imported module. This will fail if no code has been generated for this module. You can use GHC.needsTemplateHaskell to detect whether this might be the case and choose to either switch to a different target or avoid typechecking such modules. (The latter may preferable for security reasons.)
Constructors
HscCGenerate C code.
HscAsmGenerate assembly using the native code generator.
HscJavaGenerate Java bytecode.
HscInterpretedGenerate bytecode. (Requires LinkInMemory)
HscNothingDon't generate any code. See notes above.
show/hide Instances
isObjectTarget :: HscTarget -> BoolSource
Will this target result in an object file on the disk?
defaultObjectTarget :: HscTargetSource
The HscTarget value corresponding to the default way to create object files on the current platform.
data GhcMode Source
The GhcMode tells us whether we're doing multi-module compilation (controlled via the GHC API) or one-shot (single-module) compilation. This makes a difference primarily to the Finder: in one-shot mode we look for interface files for imported modules, but in multi-module mode we look for source files in order to check whether they need to be recompiled.
Constructors
CompManager--make, GHCi, etc.
OneShot
ghc -c Foo.hs
MkDependghc -M, see Finder for why we need this
show/hide Instances
isOneShot :: GhcMode -> BoolSource
data GhcLink Source
What to do in the link step, if there is one.
Constructors
NoLinkDon't link at all
LinkBinaryLink object code into a binary
LinkInMemoryUse the in-memory dynamic linker (works for both bytecode and object code).
LinkDynLibLink objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
show/hide Instances
isNoLink :: GhcLink -> BoolSource
data PackageFlag Source
Constructors
ExposePackage String
ExposePackageId String
HidePackage String
IgnorePackage String
show/hide Instances
data Option Source
When invoking external tools as part of the compilation pipeline, we pass these a sequence of options on the command-line. Rather than just using a list of Strings, we use a type that allows us to distinguish between filepaths and 'other stuff'. The reason for this is that this type gives us a handle on transforming filenames, and filenames only, to whatever format they're expected to be on a particular platform.
Constructors
FileOption String String
Option String
showOpt :: Option -> StringSource
data DynLibLoader Source
Constructors
Deployable
Wrapped (Maybe String)
SystemDependent
show/hide Instances
fFlags :: [(String, DynFlag, Bool -> Deprecated)]Source
These -f<blah> flags can all be reversed with -fno-<blah>
xFlags :: [(String, DynFlag, Bool -> Deprecated)]Source
These -Xblah> flags can all be reversed with -XNo<blah
dphPackage :: DynFlags -> PackageIdSource
wayNames :: DynFlags -> [WayName]Source
Manipulating DynFlags
defaultDynFlags :: DynFlagsSource
The normal DynFlags. Note that they is not suitable for use in this form and must be fully initialized by GHC.newSession first.
initDynFlags :: DynFlags -> IO DynFlagsSource
Used by GHC.newSession to partially initialize a new DynFlags value
dopt :: DynFlag -> DynFlags -> BoolSource
Test whether a DynFlag is set
dopt_set :: DynFlags -> DynFlag -> DynFlagsSource
Set a DynFlag
dopt_unset :: DynFlags -> DynFlag -> DynFlagsSource
Unset a DynFlag
getOptsSource
:: DynFlagsDynFlags to retrieve the options from
-> DynFlags -> [a]Relevant record accessor: one of the opt_* accessors
-> [a]Correctly ordered extracted options
Retrieve the options corresponding to a particular opt_* field in the correct order
getVerbFlag :: DynFlags -> StringSource
Gets the verbosity flag for the current verbosity level. This is fed to other tools, so GHC-specific verbosity flags like -ddump-most are not included
updOptLevel :: Int -> DynFlags -> DynFlagsSource
Sets the DynFlags to be appropriate to the optimisation level
setTmpDir :: FilePath -> DynFlags -> DynFlagsSource
setPackageName :: String -> DynFlags -> DynFlagsSource
doingTickyProfiling :: DynFlags -> BoolSource
Parsing DynFlags
parseDynamicFlagsSource
:: Monad m
=> DynFlags
-> [Located String]
-> m (DynFlags, [Located String], [Located String])Updated DynFlags, left-over arguments, and list of warnings.
Parse dynamic flags from a list of command line arguments. Returns the the parsed DynFlags, the left-over arguments, and a list of warnings. Throws a UsageError if errors occurred during parsing (such as unknown flags or missing arguments).
parseDynamicNoPackageFlagsSource
:: Monad m
=> DynFlags
-> [Located String]
-> m (DynFlags, [Located String], [Located String])Updated DynFlags, left-over arguments, and list of warnings.
Like parseDynamicFlags but does not allow the package flags (-package, -hide-package, -ignore-package, -hide-all-packages, -package-conf).
allFlags :: [String]Source
supportedLanguages :: [String]Source
languageOptions :: [DynFlag]Source
DynFlag C compiler options
machdepCCOpts :: DynFlags -> ([String], [String])Source
picCCOpts :: DynFlags -> [String]Source
Configuration of the core-to-core passes
data CoreToDo Source
Constructors
CoreDoSimplify SimplifierMode [SimplifierSwitch]
CoreDoFloatInwards
CoreDoFloatOutwards FloatOutSwitches
CoreLiberateCase
CoreDoPrintCore
CoreDoStaticArgs
CoreDoStrictness
CoreDoWorkerWrapper
CoreDoSpecialising
CoreDoSpecConstr
CoreDoOldStrictness
CoreDoGlomBinds
CoreCSE
CoreDoRuleCheck Int String
CoreDoVectorisation PackageId
CoreDoNothing
CoreDoPasses [CoreToDo]
data SimplifierMode Source
Constructors
SimplGently
SimplPhase Int [String]
show/hide Instances
data SimplifierSwitch Source
Constructors
MaxSimplifierIterations Int
NoCaseOfCase
show/hide Instances
data FloatOutSwitches Source
Constructors
FloatOutSwitches
floatOutLambdas :: BoolTrue = float lambdas to top level
floatOutConstants :: BoolTrue = float constants to top level, even if they do not escape a lambda
show/hide Instances
getCoreToDo :: DynFlags -> [CoreToDo]Source
Configuration of the stg-to-stg passes
data StgToDo Source
Constructors
StgDoMassageForProfiling
D_stg_stats
getStgToDo :: DynFlags -> [StgToDo]Source
Compiler configuration suitable for display to the user
data Printable Source
Constructors
String String
FromDynFlags (DynFlags -> String)
compilerInfo :: [(String, Printable)]Source
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