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DynFlags.hs
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DynFlags.hs
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--
-- (c) The University of Glasgow 2005
--
-------------------------------------------------------------------------------
{-# OPTIONS -fno-cse #-}
-- -fno-cse is needed for GLOBAL_VAR's to behave properly
module DynFlags (
-- * Dynamic flags and associated configuration types
DumpFlag(..),
GeneralFlag(..),
WarningFlag(..),
ExtensionFlag(..),
Language(..),
PlatformConstants(..),
FatalMessager, LogAction, FlushOut(..), FlushErr(..),
ProfAuto(..),
glasgowExtsFlags,
dopt, dopt_set, dopt_unset,
gopt, gopt_set, gopt_unset,
wopt, wopt_set, wopt_unset,
xopt, xopt_set, xopt_unset,
lang_set,
whenGeneratingDynamicToo, ifGeneratingDynamicToo,
whenCannotGenerateDynamicToo,
doDynamicToo,
DynFlags(..),
HasDynFlags(..), ContainsDynFlags(..),
RtsOptsEnabled(..),
HscTarget(..), isObjectTarget, defaultObjectTarget,
targetRetainsAllBindings,
GhcMode(..), isOneShot,
GhcLink(..), isNoLink,
PackageFlag(..),
PkgConfRef(..),
Option(..), showOpt,
DynLibLoader(..),
fFlags, fWarningFlags, fLangFlags, xFlags,
dynFlagDependencies,
tablesNextToCode, mkTablesNextToCode,
printOutputForUser, printInfoForUser,
Way(..), mkBuildTag, wayRTSOnly,
-- ** Safe Haskell
SafeHaskellMode(..),
safeHaskellOn, safeImportsOn, safeLanguageOn, safeInferOn,
packageTrustOn,
safeDirectImpsReq, safeImplicitImpsReq,
unsafeFlags,
-- ** System tool settings and locations
Settings(..),
targetPlatform,
ghcUsagePath, ghciUsagePath, topDir, tmpDir, rawSettings,
extraGccViaCFlags, systemPackageConfig,
pgm_L, pgm_P, pgm_F, pgm_c, pgm_s, pgm_a, pgm_l, pgm_dll, pgm_T,
pgm_sysman, pgm_windres, pgm_lo, pgm_lc,
opt_L, opt_P, opt_F, opt_c, opt_a, opt_l,
opt_windres, opt_lo, opt_lc,
-- ** Manipulating DynFlags
defaultDynFlags, -- Settings -> DynFlags
defaultWays,
initDynFlags, -- DynFlags -> IO DynFlags
defaultFatalMessager,
defaultLogAction,
defaultLogActionHPrintDoc,
defaultFlushOut,
defaultFlushErr,
getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
getVerbFlags,
updOptLevel,
setTmpDir,
setPackageName,
-- ** Parsing DynFlags
parseDynamicFlagsCmdLine,
parseDynamicFilePragma,
parseDynamicFlagsFull,
-- ** Available DynFlags
allFlags,
flagsAll,
flagsDynamic,
flagsPackage,
supportedLanguagesAndExtensions,
-- ** DynFlags C compiler options
picCCOpts, picPOpts,
-- * Configuration of the stg-to-stg passes
StgToDo(..),
getStgToDo,
-- * Compiler configuration suitable for display to the user
compilerInfo,
#ifdef GHCI
-- Only in stage 2 can we be sure that the RTS
-- exposes the appropriate runtime boolean
rtsIsProfiled,
#endif
#include "../includes/dist-derivedconstants/header/GHCConstantsHaskellExports.hs"
bLOCK_SIZE_W,
wORD_SIZE_IN_BITS,
tAG_MASK,
mAX_PTR_TAG,
tARGET_MIN_INT, tARGET_MAX_INT, tARGET_MAX_WORD,
unsafeGlobalDynFlags, setUnsafeGlobalDynFlags,
-- * SSE
isSse2Enabled,
isSse4_2Enabled,
) where
#include "HsVersions.h"
import Platform
import PlatformConstants
import Module
import PackageConfig
import {-# SOURCE #-} PrelNames ( mAIN )
import {-# SOURCE #-} Packages (PackageState)
import DriverPhases ( Phase(..), phaseInputExt )
import Config
import CmdLineParser
import Constants
import Panic
import Util
import Maybes ( orElse )
import MonadUtils
import qualified Pretty
import SrcLoc
import FastString
import Outputable
#ifdef GHCI
import Foreign.C ( CInt(..) )
#endif
import {-# SOURCE #-} ErrUtils ( Severity(..), MsgDoc, mkLocMessage )
import System.IO.Unsafe ( unsafePerformIO )
import Data.IORef
import Control.Monad
import Data.Bits
import Data.Char
import Data.Int
import Data.List
import Data.Map (Map)
import qualified Data.Map as Map
import Data.Set (Set)
import qualified Data.Set as Set
import Data.Word
import System.FilePath
import System.IO
import System.IO.Error
import Data.IntSet (IntSet)
import qualified Data.IntSet as IntSet
import GHC.Foreign (withCString, peekCString)
-- -----------------------------------------------------------------------------
-- DynFlags
data DumpFlag
-- debugging flags
= Opt_D_dump_cmm
| Opt_D_dump_cmm_raw
-- All of the cmm subflags (there are a lot!) Automatically
-- enabled if you run -ddump-cmm
| Opt_D_dump_cmm_cfg
| Opt_D_dump_cmm_cbe
| Opt_D_dump_cmm_proc
| Opt_D_dump_cmm_rewrite
| Opt_D_dump_cmm_sp
| Opt_D_dump_cmm_procmap
| Opt_D_dump_cmm_split
| Opt_D_dump_cmm_info
| Opt_D_dump_cmm_cps
-- end cmm subflags
| Opt_D_dump_asm
| Opt_D_dump_asm_native
| Opt_D_dump_asm_liveness
| 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_llvm
| Opt_D_dump_core_stats
| Opt_D_dump_deriv
| Opt_D_dump_ds
| Opt_D_dump_foreign
| Opt_D_dump_inlinings
| Opt_D_dump_rule_firings
| Opt_D_dump_rule_rewrites
| Opt_D_dump_simpl_trace
| Opt_D_dump_occur_anal
| Opt_D_dump_parsed
| Opt_D_dump_rn
| Opt_D_dump_core_pipeline -- TODO FIXME: dump after simplifier stats
| 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_cs_trace -- Constraint solver in type checker
| Opt_D_dump_tc_trace
| Opt_D_dump_if_trace
| Opt_D_dump_vt_trace
| Opt_D_dump_splices
| Opt_D_dump_BCOs
| Opt_D_dump_vect
| Opt_D_dump_ticked
| Opt_D_dump_rtti
| Opt_D_source_stats
| Opt_D_verbose_stg2stg
| Opt_D_dump_hi
| Opt_D_dump_hi_diffs
| Opt_D_dump_mod_cycles
| Opt_D_dump_late_float
| Opt_D_dump_view_pattern_commoning
| Opt_D_verbose_core2core
deriving (Eq, Show, Enum)
-- | Enumerates the simple on-or-off dynamic flags
data GeneralFlag
= Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
| Opt_D_faststring_stats
| Opt_D_dump_minimal_imports
| Opt_DoCoreLinting
| Opt_DoStgLinting
| Opt_DoCmmLinting
| Opt_DoAsmLinting
| Opt_NoLlvmMangler -- hidden flag
| Opt_WarnIsError -- -Werror; makes warnings fatal
| Opt_PrintExplicitForalls
-- optimisation opts
| Opt_Strictness
| Opt_FullLaziness
| Opt_FloatIn
| Opt_Specialise
| Opt_StaticArgumentTransformation
| Opt_CSE
| Opt_LiberateCase
| Opt_SpecConstr
| Opt_DoLambdaEtaExpansion
| Opt_IgnoreAsserts
| Opt_DoEtaReduction
| Opt_CaseMerge
| Opt_UnboxStrictFields
| Opt_UnboxSmallStrictFields
| Opt_DictsCheap
| Opt_EnableRewriteRules -- Apply rewrite rules during simplification
| Opt_Vectorise
| Opt_VectorisationAvoidance
| Opt_RegsGraph -- do graph coloring register allocation
| Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
| Opt_PedanticBottoms -- Be picky about how we treat bottom
| Opt_LlvmTBAA -- Use LLVM TBAA infastructure for improving AA (hidden flag)
| Opt_IrrefutableTuples
| Opt_CmmSink
| Opt_CmmElimCommonBlocks
| Opt_OmitYields
| Opt_SimpleListLiterals
-- Interface files
| Opt_IgnoreInterfacePragmas
| Opt_OmitInterfacePragmas
| Opt_ExposeAllUnfoldings
-- profiling opts
| Opt_AutoSccsOnIndividualCafs
| Opt_ProfCountEntries
-- misc opts
| Opt_Pp
| Opt_ForceRecomp
| Opt_ExcessPrecision
| Opt_EagerBlackHoling
| Opt_NoHsMain
| 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_IgnoreDotGhci
| Opt_GhciSandbox
| Opt_GhciHistory
| Opt_HelpfulErrors
| Opt_DeferTypeErrors
| Opt_Parallel
| Opt_GranMacros
| Opt_PIC
| Opt_SccProfilingOn
| Opt_Ticky
| Opt_Static
| Opt_RPath
| Opt_RelativeDynlibPaths
| Opt_Hpc
-- PreInlining is on by default. The option is there just to see how
-- bad things get if you turn it off!
| Opt_SimplPreInlining
-- output style opts
| Opt_ErrorSpans -- Include full span info in error messages,
-- instead of just the start position.
| Opt_PprCaseAsLet
-- Suppress all coercions, them replacing with '...'
| Opt_SuppressCoercions
| Opt_SuppressVarKinds
-- Suppress module id prefixes on variables.
| Opt_SuppressModulePrefixes
-- Suppress type applications.
| Opt_SuppressTypeApplications
-- Suppress info such as arity and unfoldings on identifiers.
| Opt_SuppressIdInfo
-- Suppress separate type signatures in core, but leave types on
-- lambda bound vars
| Opt_SuppressTypeSignatures
-- Suppress unique ids on variables.
-- Except for uniques, as some simplifier phases introduce new
-- variables that have otherwise identical names.
| Opt_SuppressUniques
-- temporary flags
| Opt_RunCPS
| Opt_RunCPSZ
| Opt_AutoLinkPackages
| Opt_ImplicitImportQualified
-- keeping stuff
| Opt_KeepHiDiffs
| Opt_KeepHcFiles
| Opt_KeepSFiles
| Opt_KeepTmpFiles
| Opt_KeepRawTokenStream
| Opt_KeepLlvmFiles
| Opt_BuildDynamicToo
-- safe haskell flags
| Opt_DistrustAllPackages
| Opt_PackageTrust
deriving (Eq, Show, Enum)
data WarningFlag =
Opt_WarnDuplicateExports
| Opt_WarnDuplicateConstraints
| Opt_WarnHiShadows
| Opt_WarnImplicitPrelude
| Opt_WarnIncompletePatterns
| Opt_WarnIncompleteUniPatterns
| Opt_WarnIncompletePatternsRecUpd
| Opt_WarnMissingFields
| Opt_WarnMissingImportList
| Opt_WarnMissingMethods
| Opt_WarnMissingSigs
| Opt_WarnMissingLocalSigs
| Opt_WarnNameShadowing
| Opt_WarnOverlappingPatterns
| Opt_WarnTypeDefaults
| Opt_WarnMonomorphism
| Opt_WarnUnusedBinds
| Opt_WarnUnusedImports
| Opt_WarnUnusedMatches
| Opt_WarnWarningsDeprecations
| Opt_WarnDeprecatedFlags
| Opt_WarnDodgyExports
| Opt_WarnDodgyImports
| Opt_WarnOrphans
| Opt_WarnAutoOrphans
| Opt_WarnIdentities
| Opt_WarnTabs
| Opt_WarnUnrecognisedPragmas
| Opt_WarnDodgyForeignImports
| Opt_WarnLazyUnliftedBindings
| Opt_WarnUnusedDoBind
| Opt_WarnWrongDoBind
| Opt_WarnAlternativeLayoutRuleTransitional
| Opt_WarnUnsafe
| Opt_WarnSafe
| Opt_WarnPointlessPragmas
| Opt_WarnUnsupportedCallingConventions
| Opt_WarnUnsupportedLlvmVersion
| Opt_WarnInlineRuleShadowing
| Opt_WarnTypeableInstances
deriving (Eq, Show, Enum)
data Language = Haskell98 | Haskell2010
deriving Enum
-- | The various Safe Haskell modes
data SafeHaskellMode
= Sf_None
| Sf_Unsafe
| Sf_Trustworthy
| Sf_Safe
| Sf_SafeInferred
deriving (Eq)
instance Show SafeHaskellMode where
show Sf_None = "None"
show Sf_Unsafe = "Unsafe"
show Sf_Trustworthy = "Trustworthy"
show Sf_Safe = "Safe"
show Sf_SafeInferred = "Safe-Inferred"
instance Outputable SafeHaskellMode where
ppr = text . show
data ExtensionFlag
= Opt_Cpp
| Opt_OverlappingInstances
| Opt_UndecidableInstances
| Opt_IncoherentInstances
| Opt_MonomorphismRestriction
| Opt_MonoPatBinds
| Opt_MonoLocalBinds
| Opt_RelaxedPolyRec -- Deprecated
| Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
| Opt_ForeignFunctionInterface
| Opt_UnliftedFFITypes
| Opt_InterruptibleFFI
| Opt_CApiFFI
| Opt_GHCForeignImportPrim
| Opt_ParallelArrays -- Syntactic support for parallel arrays
| Opt_Arrows -- Arrow-notation syntax
| Opt_TemplateHaskell
| Opt_QuasiQuotes
| Opt_ImplicitParams
| Opt_ImplicitPrelude
| Opt_ScopedTypeVariables
| Opt_AllowAmbiguousTypes
| Opt_UnboxedTuples
| Opt_BangPatterns
| Opt_TypeFamilies
| Opt_OverloadedStrings
| Opt_OverloadedLists
| Opt_DisambiguateRecordFields
| Opt_RecordWildCards
| Opt_RecordPuns
| Opt_ViewPatterns
| Opt_GADTs
| Opt_GADTSyntax
| Opt_NPlusKPatterns
| Opt_DoAndIfThenElse
| Opt_RebindableSyntax
| Opt_ConstraintKinds
| Opt_PolyKinds -- Kind polymorphism
| Opt_DataKinds -- Datatype promotion
| Opt_InstanceSigs
| Opt_StandaloneDeriving
| Opt_DeriveDataTypeable
| Opt_AutoDeriveTypeable -- Automatic derivation of Typeable
| Opt_DeriveFunctor
| Opt_DeriveTraversable
| Opt_DeriveFoldable
| Opt_DeriveGeneric -- Allow deriving Generic/1
| Opt_DefaultSignatures -- Allow extra signatures for defmeths
| Opt_TypeSynonymInstances
| Opt_FlexibleContexts
| Opt_FlexibleInstances
| Opt_ConstrainedClassMethods
| Opt_MultiParamTypeClasses
| Opt_FunctionalDependencies
| Opt_UnicodeSyntax
| Opt_ExistentialQuantification
| Opt_MagicHash
| Opt_EmptyDataDecls
| Opt_KindSignatures
| Opt_ParallelListComp
| Opt_TransformListComp
| Opt_MonadComprehensions
| Opt_GeneralizedNewtypeDeriving
| Opt_RecursiveDo
| Opt_PostfixOperators
| Opt_TupleSections
| Opt_PatternGuards
| Opt_LiberalTypeSynonyms
| Opt_RankNTypes
| Opt_ImpredicativeTypes
| Opt_TypeOperators
| Opt_ExplicitNamespaces
| Opt_PackageImports
| Opt_ExplicitForAll
| Opt_AlternativeLayoutRule
| Opt_AlternativeLayoutRuleTransitional
| Opt_DatatypeContexts
| Opt_NondecreasingIndentation
| Opt_RelaxedLayout
| Opt_TraditionalRecordSyntax
| Opt_LambdaCase
| Opt_MultiWayIf
| Opt_TypeHoles
| Opt_EmptyCase
deriving (Eq, Enum, Show)
-- | Contains not only a collection of 'GeneralFlag's but also a plethora of
-- information relating to the compilation of a single file or GHC session
data DynFlags = DynFlags {
ghcMode :: GhcMode,
ghcLink :: GhcLink,
hscTarget :: HscTarget,
settings :: Settings,
hscOutName :: String, -- ^ Name of the output file
extCoreName :: String, -- ^ Name of the .hcr output file
verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
optLevel :: Int, -- ^ Optimisation level
simplPhases :: Int, -- ^ Number of simplifier phases
maxSimplIterations :: Int, -- ^ Max simplifier iterations
shouldDumpSimplPhase :: Maybe String,
ruleCheck :: Maybe String,
strictnessBefore :: [Int], -- ^ Additional demand analysis
simplTickFactor :: Int, -- ^ Multiplier for simplifier ticks
specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
-- See CoreMonad.FloatOutSwitches
lateFloatLamOn :: Bool, -- ^ Enable the late lambda lift pass
lateFloatNonRecLam :: Maybe Int, -- ^ Limit on # abstracted variables for *late* non-recursive function floating (Nothing => all, Just 0 => none)
lateFloatRecLam :: Maybe Int, -- ^ " " " " " for *late* recursive function floating
lateFloatAbsLNEVar :: Bool, -- ^ allowed to abstract LNE variables?
lateFloatAbsUnsatVar :: Bool, -- ^ allowed to abstract undersaturated applied let-bound variables?
lateFloatAbsSatVar :: Bool, -- ^ allowed to abstract saturated applied let-bound variables?
lateFloatAbsOversatVar :: Bool, -- ^ allowed to abstract oversaturated applied let-bound variables?
lateFloatCreatePAPs :: Bool, -- ^ allowed to float function bindings that occur unapplied
lateFloatIfInClo :: Maybe Int, -- ^ Limit on # abstracted variables for floating a binding that occurs in a closure
lateFloatCloGrowth :: Maybe Int, -- ^ Limit on # additional free variables for closures in which the function occurs
lateFloatSimpl :: Bool, -- ^ follow the late lambda lift with a simplification pass?
lateFloatStabilizeFirst :: Bool,
lateFloatDoSinglyRecSAT :: Bool,
lateFloatCloGrowthInLam :: Maybe Int,
lateFloatRetry :: Bool,
protectLastArg :: Bool,
historySize :: Int,
cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
importPaths :: [FilePath],
mainModIs :: Module,
mainFunIs :: Maybe String,
ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
thisPackage :: PackageId, -- ^ name of package currently being compiled
-- ways
ways :: [Way], -- ^ Way flags from the command line
buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
rtsBuildTag :: String, -- ^ The RTS \"way\"
-- For object splitting
splitInfo :: Maybe (String,Int),
-- paths etc.
objectDir :: Maybe String,
dylibInstallName :: Maybe String,
hiDir :: Maybe String,
stubDir :: Maybe String,
dumpDir :: Maybe String,
objectSuf :: String,
hcSuf :: String,
hiSuf :: String,
canGenerateDynamicToo :: IORef Bool,
dynObjectSuf :: String,
dynHiSuf :: String,
outputFile :: Maybe String,
dynOutputFile :: Maybe String,
outputHi :: Maybe String,
dynLibLoader :: DynLibLoader,
-- | This is set by 'DriverPipeline.runPipeline' based on where
-- its output is going.
dumpPrefix :: Maybe FilePath,
-- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
-- Set by @-ddump-file-prefix@
dumpPrefixForce :: Maybe FilePath,
ldInputs :: [String],
includePaths :: [String],
libraryPaths :: [String],
frameworkPaths :: [String], -- used on darwin only
cmdlineFrameworks :: [String], -- ditto
rtsOpts :: Maybe String,
rtsOptsEnabled :: RtsOptsEnabled,
hpcDir :: String, -- ^ Path to store the .mix files
-- Plugins
pluginModNames :: [ModuleName],
pluginModNameOpts :: [(ModuleName,String)],
-- For ghc -M
depMakefile :: FilePath,
depIncludePkgDeps :: Bool,
depExcludeMods :: [ModuleName],
depSuffixes :: [String],
-- Package flags
extraPkgConfs :: [PkgConfRef] -> [PkgConfRef],
-- ^ The @-package-db@ flags given on the command line, in the order
-- they appeared.
packageFlags :: [PackageFlag],
-- ^ The @-package@ and @-hide-package@ flags from the command-line
-- Package state
-- NB. do not modify this field, it is calculated by
-- Packages.initPackages and Packages.updatePackages.
pkgDatabase :: Maybe [PackageConfig],
pkgState :: PackageState,
-- Temporary files
-- These have to be IORefs, because the defaultCleanupHandler needs to
-- know what to clean when an exception happens
filesToClean :: IORef [FilePath],
dirsToClean :: IORef (Map FilePath FilePath),
filesToNotIntermediateClean :: IORef [FilePath],
-- Names of files which were generated from -ddump-to-file; used to
-- track which ones we need to truncate because it's our first run
-- through
generatedDumps :: IORef (Set FilePath),
-- hsc dynamic flags
dumpFlags :: IntSet,
generalFlags :: IntSet,
warningFlags :: IntSet,
-- Don't change this without updating extensionFlags:
language :: Maybe Language,
-- | Safe Haskell mode
safeHaskell :: SafeHaskellMode,
-- We store the location of where some extension and flags were turned on so
-- we can produce accurate error messages when Safe Haskell fails due to
-- them.
thOnLoc :: SrcSpan,
newDerivOnLoc :: SrcSpan,
pkgTrustOnLoc :: SrcSpan,
warnSafeOnLoc :: SrcSpan,
warnUnsafeOnLoc :: SrcSpan,
-- Don't change this without updating extensionFlags:
extensions :: [OnOff ExtensionFlag],
-- extensionFlags should always be equal to
-- flattenExtensionFlags language extensions
extensionFlags :: IntSet,
-- Unfolding control
-- See Note [Discounts and thresholds] in CoreUnfold
ufCreationThreshold :: Int,
ufUseThreshold :: Int,
ufFunAppDiscount :: Int,
ufDictDiscount :: Int,
ufKeenessFactor :: Float,
ufDearOp :: Int,
ufIgnoreRealWorld :: Bool,
maxWorkerArgs :: Int,
ghciHistSize :: Int,
-- | MsgDoc output action: use "ErrUtils" instead of this if you can
log_action :: LogAction,
flushOut :: FlushOut,
flushErr :: FlushErr,
haddockOptions :: Maybe String,
ghciScripts :: [String],
-- Output style options
pprUserLength :: Int,
pprCols :: Int,
traceLevel :: Int, -- Standard level is 1. Less verbose is 0.
useUnicodeQuotes :: Bool,
-- | what kind of {-# SCC #-} to add automatically
profAuto :: ProfAuto,
interactivePrint :: Maybe String,
llvmVersion :: IORef Int,
nextWrapperNum :: IORef Int,
-- | Machine dependant flags (-m<blah> stuff)
sseVersion :: Maybe (Int, Int) -- (major, minor)
}
class HasDynFlags m where
getDynFlags :: m DynFlags
class ContainsDynFlags t where
extractDynFlags :: t -> DynFlags
replaceDynFlags :: t -> DynFlags -> t
data ProfAuto
= NoProfAuto -- ^ no SCC annotations added
| ProfAutoAll -- ^ top-level and nested functions are annotated
| ProfAutoTop -- ^ top-level functions annotated only
| ProfAutoExports -- ^ exported functions annotated only
| ProfAutoCalls -- ^ annotate call-sites
deriving (Enum)
data Settings = Settings {
sTargetPlatform :: Platform, -- Filled in by SysTools
sGhcUsagePath :: FilePath, -- Filled in by SysTools
sGhciUsagePath :: FilePath, -- ditto
sTopDir :: FilePath,
sTmpDir :: String, -- no trailing '/'
-- You shouldn't need to look things up in rawSettings directly.
-- They should have their own fields instead.
sRawSettings :: [(String, String)],
sExtraGccViaCFlags :: [String],
sSystemPackageConfig :: FilePath,
sLdSupportsCompactUnwind :: Bool,
sLdSupportsBuildId :: Bool,
sLdIsGnuLd :: Bool,
-- commands for particular phases
sPgm_L :: String,
sPgm_P :: (String,[Option]),
sPgm_F :: String,
sPgm_c :: (String,[Option]),
sPgm_s :: (String,[Option]),
sPgm_a :: (String,[Option]),
sPgm_l :: (String,[Option]),
sPgm_dll :: (String,[Option]),
sPgm_T :: String,
sPgm_sysman :: String,
sPgm_windres :: String,
sPgm_lo :: (String,[Option]), -- LLVM: opt llvm optimiser
sPgm_lc :: (String,[Option]), -- LLVM: llc static compiler
-- options for particular phases
sOpt_L :: [String],
sOpt_P :: [String],
sOpt_F :: [String],
sOpt_c :: [String],
sOpt_a :: [String],
sOpt_l :: [String],
sOpt_windres :: [String],
sOpt_lo :: [String], -- LLVM: llvm optimiser
sOpt_lc :: [String], -- LLVM: llc static compiler
sPlatformConstants :: PlatformConstants
}
targetPlatform :: DynFlags -> Platform
targetPlatform dflags = sTargetPlatform (settings dflags)
ghcUsagePath :: DynFlags -> FilePath
ghcUsagePath dflags = sGhcUsagePath (settings dflags)
ghciUsagePath :: DynFlags -> FilePath
ghciUsagePath dflags = sGhciUsagePath (settings dflags)
topDir :: DynFlags -> FilePath
topDir dflags = sTopDir (settings dflags)
tmpDir :: DynFlags -> String
tmpDir dflags = sTmpDir (settings dflags)
rawSettings :: DynFlags -> [(String, String)]
rawSettings dflags = sRawSettings (settings dflags)
extraGccViaCFlags :: DynFlags -> [String]
extraGccViaCFlags dflags = sExtraGccViaCFlags (settings dflags)
systemPackageConfig :: DynFlags -> FilePath
systemPackageConfig dflags = sSystemPackageConfig (settings dflags)
pgm_L :: DynFlags -> String
pgm_L dflags = sPgm_L (settings dflags)
pgm_P :: DynFlags -> (String,[Option])
pgm_P dflags = sPgm_P (settings dflags)
pgm_F :: DynFlags -> String
pgm_F dflags = sPgm_F (settings dflags)
pgm_c :: DynFlags -> (String,[Option])
pgm_c dflags = sPgm_c (settings dflags)
pgm_s :: DynFlags -> (String,[Option])
pgm_s dflags = sPgm_s (settings dflags)
pgm_a :: DynFlags -> (String,[Option])
pgm_a dflags = sPgm_a (settings dflags)
pgm_l :: DynFlags -> (String,[Option])
pgm_l dflags = sPgm_l (settings dflags)
pgm_dll :: DynFlags -> (String,[Option])
pgm_dll dflags = sPgm_dll (settings dflags)
pgm_T :: DynFlags -> String
pgm_T dflags = sPgm_T (settings dflags)
pgm_sysman :: DynFlags -> String
pgm_sysman dflags = sPgm_sysman (settings dflags)
pgm_windres :: DynFlags -> String
pgm_windres dflags = sPgm_windres (settings dflags)
pgm_lo :: DynFlags -> (String,[Option])
pgm_lo dflags = sPgm_lo (settings dflags)
pgm_lc :: DynFlags -> (String,[Option])
pgm_lc dflags = sPgm_lc (settings dflags)
opt_L :: DynFlags -> [String]
opt_L dflags = sOpt_L (settings dflags)
opt_P :: DynFlags -> [String]
opt_P dflags = concatMap (wayOptP (targetPlatform dflags)) (ways dflags)
++ sOpt_P (settings dflags)
opt_F :: DynFlags -> [String]
opt_F dflags = sOpt_F (settings dflags)
opt_c :: DynFlags -> [String]
opt_c dflags = concatMap (wayOptc (targetPlatform dflags)) (ways dflags)
++ sOpt_c (settings dflags)
opt_a :: DynFlags -> [String]
opt_a dflags = sOpt_a (settings dflags)
opt_l :: DynFlags -> [String]
opt_l dflags = concatMap (wayOptl (targetPlatform dflags)) (ways dflags)
++ sOpt_l (settings dflags)
opt_windres :: DynFlags -> [String]
opt_windres dflags = sOpt_windres (settings dflags)
opt_lo :: DynFlags -> [String]
opt_lo dflags = sOpt_lo (settings dflags)
opt_lc :: DynFlags -> [String]
opt_lc dflags = sOpt_lc (settings dflags)
-- | 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 be
-- preferable for security reasons.)
--
data HscTarget
= HscC -- ^ Generate C code.
| HscAsm -- ^ Generate assembly using the native code generator.
| HscLlvm -- ^ Generate assembly using the llvm code generator.
| HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
| HscNothing -- ^ Don't generate any code. See notes above.
deriving (Eq, Show)
-- | Will this target result in an object file on the disk?
isObjectTarget :: HscTarget -> Bool
isObjectTarget HscC = True
isObjectTarget HscAsm = True
isObjectTarget HscLlvm = True
isObjectTarget _ = False
-- | Does this target retain *all* top-level bindings for a module,
-- rather than just the exported bindings, in the TypeEnv and compiled
-- code (if any)? In interpreted mode we do this, so that GHCi can
-- call functions inside a module. In HscNothing mode we also do it,
-- so that Haddock can get access to the GlobalRdrEnv for a module
-- after typechecking it.
targetRetainsAllBindings :: HscTarget -> Bool
targetRetainsAllBindings HscInterpreted = True
targetRetainsAllBindings HscNothing = True
targetRetainsAllBindings _ = False
-- | 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.
data GhcMode
= CompManager -- ^ @\-\-make@, GHCi, etc.
| OneShot -- ^ @ghc -c Foo.hs@
| MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
deriving Eq
instance Outputable GhcMode where
ppr CompManager = ptext (sLit "CompManager")
ppr OneShot = ptext (sLit "OneShot")
ppr MkDepend = ptext (sLit "MkDepend")
isOneShot :: GhcMode -> Bool
isOneShot OneShot = True
isOneShot _other = False
-- | What to do in the link step, if there is one.
data GhcLink
= NoLink -- ^ Don't link at all
| LinkBinary -- ^ Link object code into a binary
| LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
-- bytecode and object code).
| LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
deriving (Eq, Show)
isNoLink :: GhcLink -> Bool
isNoLink NoLink = True
isNoLink _ = False
data PackageFlag
= ExposePackage String
| ExposePackageId String
| HidePackage String
| IgnorePackage String
| TrustPackage String
| DistrustPackage String
deriving (Eq, Show)
defaultHscTarget :: Platform -> HscTarget
defaultHscTarget = defaultObjectTarget
-- | The 'HscTarget' value corresponding to the default way to create
-- object files on the current platform.
defaultObjectTarget :: Platform -> HscTarget
defaultObjectTarget platform
| platformUnregisterised platform = HscC
| cGhcWithNativeCodeGen == "YES" = HscAsm
| otherwise = HscLlvm
tablesNextToCode :: DynFlags -> Bool
tablesNextToCode dflags
= mkTablesNextToCode (platformUnregisterised (targetPlatform dflags))
-- Determines whether we will be compiling
-- info tables that reside just before the entry code, or with an
-- indirection to the entry code. See TABLES_NEXT_TO_CODE in
-- includes/rts/storage/InfoTables.h.
mkTablesNextToCode :: Bool -> Bool
mkTablesNextToCode unregisterised
= not unregisterised && cGhcEnableTablesNextToCode == "YES"
data DynLibLoader
= Deployable
| SystemDependent
deriving Eq
data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
deriving (Show)
-----------------------------------------------------------------------------
-- Ways
-- The central concept of a "way" is that all objects in a given
-- program must be compiled in the same "way". Certain options change
-- parameters of the virtual machine, eg. profiling adds an extra word
-- to the object header, so profiling objects cannot be linked with
-- non-profiling objects.
-- After parsing the command-line options, we determine which "way" we
-- are building - this might be a combination way, eg. profiling+threaded.
-- We then find the "build-tag" associated with this way, and this
-- becomes the suffix used to find .hi files and libraries used in
-- this compilation.