+
{-# OPTIONS -fno-warn-missing-fields #-}
-----------------------------------------------------------------------------
--
-- Dynamic flags
DynFlag(..),
DynFlags(..),
- HscTarget(..),
+ HscTarget(..), isObjectTarget, defaultObjectTarget,
GhcMode(..), isOneShot,
GhcLink(..), isNoLink,
PackageFlag(..),
import Panic ( panic, GhcException(..) )
import UniqFM ( UniqFM )
import Util ( notNull, splitLongestPrefix, normalisePath )
-import Maybes ( fromJust, orElse )
+import Maybes ( orElse, fromJust )
import SrcLoc ( SrcSpan )
import Outputable
import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
import Util ( split )
#endif
-import Data.Char ( isUpper )
+import Data.Char ( isUpper, toLower )
import System.IO ( hPutStrLn, stderr )
-#ifdef GHCI
-import Breakpoints ( BkptHandler )
-import Module ( ModuleName )
-#endif
-- -----------------------------------------------------------------------------
-- DynFlags
-- debugging flags
= Opt_D_dump_cmm
+ | Opt_D_dump_cps_cmm
| Opt_D_dump_asm
| Opt_D_dump_cpranal
| Opt_D_dump_deriv
| Opt_WarnIsError -- -Werror; makes warnings fatal
| Opt_WarnDuplicateExports
| Opt_WarnHiShadows
+ | Opt_WarnImplicitPrelude
| Opt_WarnIncompletePatterns
| Opt_WarnIncompletePatternsRecUpd
| Opt_WarnMissingFields
| Opt_WarnOverlappingPatterns
| Opt_WarnSimplePatterns
| Opt_WarnTypeDefaults
+ | Opt_WarnMonomorphism
| Opt_WarnUnusedBinds
| Opt_WarnUnusedImports
| Opt_WarnUnusedMatches
| Opt_ImplicitPrelude
| Opt_ScopedTypeVariables
| Opt_BangPatterns
- | Opt_IndexedTypes
+ | Opt_TypeFamilies
| Opt_OverloadedStrings
+ | Opt_DisambiguateRecordFields
+ | Opt_RecordWildCards
+ | Opt_RecordPuns
+ | Opt_GADTs
+ | Opt_RelaxedPolyRec -- -X=RelaxedPolyRec
+ | Opt_TypeSynonymInstances
+ | Opt_FlexibleInstances
+ | Opt_MultiParamTypeClasses
+ | Opt_FunctionalDependencies
+ | Opt_MagicHash
+ | Opt_EmptyDataDecls
+ | Opt_KindSignatures
+ | Opt_ParallelListComp
+ | Opt_GeneralizedNewtypeDeriving
+ | Opt_RecursiveDo
+ | Opt_PatternGuards
-- optimisation opts
| Opt_Strictness
| Opt_CaseMerge
| Opt_UnboxStrictFields
| Opt_DictsCheap
+ | Opt_RewriteRules
+ | Opt_Vectorise
-- misc opts
| Opt_Cpp
| Opt_SplitObjs
| Opt_StgStats
| Opt_HideAllPackages
-#if defined(GHCI) && defined(DEBUGGER)
- | Opt_Debugging
-#endif
| Opt_PrintBindResult
| Opt_Haddock
| Opt_Hpc_No_Auto
+ | Opt_BreakOnException
-- keeping stuff
| Opt_KeepHiDiffs
-- message output
log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO ()
-
-#ifdef GHCI
- -- breakpoint handling
- ,bkptHandler :: Maybe (BkptHandler Module)
-#endif
}
data HscTarget
| HscNothing
deriving (Eq, Show)
+-- | will this target result in an object file on the disk?
+isObjectTarget :: HscTarget -> Bool
+isObjectTarget HscC = True
+isObjectTarget HscAsm = True
+isObjectTarget _ = 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
- = BatchCompile -- | @ghc --make Main@
- | Interactive -- | @ghc --interactive@
- | OneShot -- | @ghc -c Foo.hs@
- | JustTypecheck -- | Development environemnts, refactorer, etc.
- | MkDepend
+ = CompManager -- ^ --make, GHCi, etc.
+ | OneShot -- ^ ghc -c Foo.hs
+ | MkDepend -- ^ ghc -M, see Finder for why we need this
deriving Eq
isOneShot :: GhcMode -> Bool
isOneShot OneShot = True
isOneShot _other = False
+-- | What kind of linking to do.
data GhcLink -- What to do in the link step, if there is one
- = -- Only relevant for modes
- -- DoMake and StopBefore StopLn
- NoLink -- Don't link at all
- | StaticLink -- Ordinary linker [the default]
- | MkDLL -- Make a DLL
+ = NoLink -- Don't link at all
+ | LinkBinary -- Link object code into a binary
+ | LinkInMemory -- Use the in-memory dynamic linker
+ | LinkDynLib -- Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
+ deriving Eq
isNoLink :: GhcLink -> Bool
isNoLink NoLink = True
| IgnorePackage String
deriving Eq
-defaultHscTarget
+defaultHscTarget = defaultObjectTarget
+
+-- | the 'HscTarget' value corresponding to the default way to create
+-- object files on the current platform.
+defaultObjectTarget
| cGhcWithNativeCodeGen == "YES" = HscAsm
| otherwise = HscC
defaultDynFlags =
DynFlags {
- ghcMode = OneShot,
- ghcLink = StaticLink,
+ ghcMode = CompManager,
+ ghcLink = LinkBinary,
coreToDo = Nothing,
stgToDo = Nothing,
hscTarget = defaultHscTarget,
packageFlags = [],
pkgDatabase = Nothing,
pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
-#ifdef GHCI
- bkptHandler = Nothing,
-#endif
flags = [
Opt_ReadUserPackageConf,
updOptLevel :: Int -> DynFlags -> DynFlags
-- Set dynflags appropriate to the optimisation level
updOptLevel n dfs
- = dfs2{ optLevel = n }
+ = dfs2{ optLevel = final_n }
where
+ final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
dfs1 = foldr (flip dopt_unset) dfs remove_dopts
dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
- extra_dopts = [ f | (ns,f) <- optLevelFlags, n `elem` ns ]
- remove_dopts = [ f | (ns,f) <- optLevelFlags, n `notElem` ns ]
+ extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
+ remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
optLevelFlags :: [([Int], DynFlag)]
optLevelFlags
= [ ([0], Opt_IgnoreInterfacePragmas)
, ([0], Opt_OmitInterfacePragmas)
+
, ([1,2], Opt_IgnoreAsserts)
+ , ([1,2], Opt_RewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
+ -- in PrelRules
, ([1,2], Opt_DoEtaReduction)
, ([1,2], Opt_CaseMerge)
, ([1,2], Opt_Strictness)
, ([1,2], Opt_CSE)
, ([1,2], Opt_FullLaziness)
+
, ([2], Opt_LiberateCase)
, ([2], Opt_SpecConstr)
-------- Linking ----------------------------------------------------
, ( "c" , NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
, ( "no-link" , NoArg (upd $ \d -> d{ ghcLink=NoLink } )) -- Dep.
- , ( "-mk-dll" , NoArg (upd $ \d -> d{ ghcLink=MkDLL } ))
+ , ( "shared" , NoArg (upd $ \d -> d{ ghcLink=LinkDynLib } ))
------- Libraries ---------------------------------------------------
, ( "L" , Prefix addLibraryPath )
, ( "stubdir" , HasArg (upd . setStubDir . Just))
------- Keeping temporary files -------------------------------------
- , ( "keep-hc-file" , AnySuffix (\_ -> setDynFlag Opt_KeepHcFiles))
- , ( "keep-s-file" , AnySuffix (\_ -> setDynFlag Opt_KeepSFiles))
- , ( "keep-raw-s-file", AnySuffix (\_ -> setDynFlag Opt_KeepRawSFiles))
- , ( "keep-tmp-files" , AnySuffix (\_ -> setDynFlag Opt_KeepTmpFiles))
+ -- These can be singular (think ghc -c) or plural (think ghc --make)
+ , ( "keep-hc-file" , NoArg (setDynFlag Opt_KeepHcFiles))
+ , ( "keep-hc-files" , NoArg (setDynFlag Opt_KeepHcFiles))
+ , ( "keep-s-file" , NoArg (setDynFlag Opt_KeepSFiles))
+ , ( "keep-s-files" , NoArg (setDynFlag Opt_KeepSFiles))
+ , ( "keep-raw-s-file" , NoArg (setDynFlag Opt_KeepRawSFiles))
+ , ( "keep-raw-s-files", NoArg (setDynFlag Opt_KeepRawSFiles))
+ -- This only makes sense as plural
+ , ( "keep-tmp-files" , NoArg (setDynFlag Opt_KeepTmpFiles))
------- Miscellaneous ----------------------------------------------
, ( "no-hs-main" , NoArg (setDynFlag Opt_NoHsMain))
, ( "dstg-stats", NoArg (setDynFlag Opt_StgStats))
, ( "ddump-cmm", setDumpFlag Opt_D_dump_cmm)
+ , ( "ddump-cps-cmm", setDumpFlag Opt_D_dump_cps_cmm)
, ( "ddump-asm", setDumpFlag Opt_D_dump_asm)
, ( "ddump-cpranal", setDumpFlag Opt_D_dump_cpranal)
, ( "ddump-deriv", setDumpFlag Opt_D_dump_deriv)
, ( "dsource-stats", setDumpFlag Opt_D_source_stats)
, ( "dverbose-core2core", setDumpFlag Opt_D_verbose_core2core)
, ( "dverbose-stg2stg", setDumpFlag Opt_D_verbose_stg2stg)
- , ( "ddump-hi-diffs", setDumpFlag Opt_D_dump_hi_diffs)
, ( "ddump-hi", setDumpFlag Opt_D_dump_hi)
, ( "ddump-minimal-imports", setDumpFlag Opt_D_dump_minimal_imports)
, ( "ddump-vect", setDumpFlag Opt_D_dump_vect)
, ( "ddump-hpc", setDumpFlag Opt_D_dump_hpc)
, ( "ddump-mod-cycles", setDumpFlag Opt_D_dump_mod_cycles)
+ , ( "ddump-hi-diffs", NoArg (setDynFlag Opt_D_dump_hi_diffs))
, ( "dcore-lint", NoArg (setDynFlag Opt_DoCoreLinting))
, ( "dstg-lint", NoArg (setDynFlag Opt_DoStgLinting))
, ( "dcmm-lint", NoArg (setDynFlag Opt_DoCmmLinting))
------ Compiler flags -----------------------------------------------
+ , ( "fasm", NoArg (setObjTarget HscAsm) )
+ , ( "fvia-c", NoArg (setObjTarget HscC) )
+ , ( "fvia-C", NoArg (setObjTarget HscC) )
+
, ( "fno-code", NoArg (setTarget HscNothing))
- , ( "fasm", AnySuffix (\_ -> setTarget HscAsm) )
- , ( "fvia-c", NoArg (setTarget HscC) )
- , ( "fvia-C", NoArg (setTarget HscC) )
+ , ( "fbyte-code", NoArg (setTarget HscInterpreted) )
+ , ( "fobject-code", NoArg (setTarget defaultHscTarget) )
, ( "fglasgow-exts", NoArg (mapM_ setDynFlag glasgowExtsFlags) )
, ( "fno-glasgow-exts", NoArg (mapM_ unSetDynFlag glasgowExtsFlags) )
-
-- the rest of the -f* and -fno-* flags
- , ( "fno-", PrefixPred (\f -> isFFlag f) (\f -> unSetDynFlag (getFFlag f)) )
- , ( "f", PrefixPred (\f -> isFFlag f) (\f -> setDynFlag (getFFlag f)) )
+ , ( "f", PrefixPred (isFlag fFlags) (\f -> setDynFlag (getFlag fFlags f)) )
+ , ( "f", PrefixPred (isNoFlag fFlags) (\f -> unSetDynFlag (getNoFlag fFlags f)) )
+
+ -- For now, allow -X flags with -f; ToDo: report this as deprecated
+ , ( "f", PrefixPred (isFlag xFlags) (\f -> setDynFlag (getFlag xFlags f)) )
+ , ( "f", PrefixPred (isNoFlag xFlags) (\f -> unSetDynFlag (getNoFlag xFlags f)) )
+
+ -- the rest of the -X* and -Xno-* flags
+ , ( "X", PrefixPred (isFlag xFlags) (\f -> setDynFlag (getFlag xFlags f)) )
+ , ( "X", PrefixPred (isNoFlag xFlags) (\f -> unSetDynFlag (getNoFlag xFlags f)) )
]
-- these -f<blah> flags can all be reversed with -fno-<blah>
fFlags = [
( "warn-duplicate-exports", Opt_WarnDuplicateExports ),
( "warn-hi-shadowing", Opt_WarnHiShadows ),
+ ( "warn-implicit-prelude", Opt_WarnImplicitPrelude ),
( "warn-incomplete-patterns", Opt_WarnIncompletePatterns ),
( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd ),
( "warn-missing-fields", Opt_WarnMissingFields ),
( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns ),
( "warn-simple-patterns", Opt_WarnSimplePatterns ),
( "warn-type-defaults", Opt_WarnTypeDefaults ),
+ ( "warn-monomorphism-restriction", Opt_WarnMonomorphism ),
( "warn-unused-binds", Opt_WarnUnusedBinds ),
( "warn-unused-imports", Opt_WarnUnusedImports ),
( "warn-unused-matches", Opt_WarnUnusedMatches ),
( "warn-deprecations", Opt_WarnDeprecations ),
( "warn-orphans", Opt_WarnOrphans ),
( "warn-tabs", Opt_WarnTabs ),
- ( "fi", Opt_FFI ), -- support `-ffi'...
- ( "ffi", Opt_FFI ), -- ...and also `-fffi'
- ( "arrows", Opt_Arrows ), -- arrow syntax
- ( "parr", Opt_PArr ),
- ( "th", Opt_TH ),
- ( "implicit-prelude", Opt_ImplicitPrelude ),
- ( "scoped-type-variables", Opt_ScopedTypeVariables ),
- ( "bang-patterns", Opt_BangPatterns ),
- ( "overloaded-strings", Opt_OverloadedStrings ),
- ( "indexed-types", Opt_IndexedTypes ),
- ( "monomorphism-restriction", Opt_MonomorphismRestriction ),
- ( "mono-pat-binds", Opt_MonoPatBinds ),
- ( "extended-default-rules", Opt_ExtendedDefaultRules ),
- ( "implicit-params", Opt_ImplicitParams ),
- ( "allow-overlapping-instances", Opt_AllowOverlappingInstances ),
- ( "allow-undecidable-instances", Opt_AllowUndecidableInstances ),
- ( "allow-incoherent-instances", Opt_AllowIncoherentInstances ),
- ( "generics", Opt_Generics ),
( "strictness", Opt_Strictness ),
( "full-laziness", Opt_FullLaziness ),
( "liberate-case", Opt_LiberateCase ),
( "excess-precision", Opt_ExcessPrecision ),
( "asm-mangling", Opt_DoAsmMangling ),
( "print-bind-result", Opt_PrintBindResult ),
-#if defined(GHCI) && defined(DEBUGGER)
- ( "debugging", Opt_Debugging),
-#endif
( "force-recomp", Opt_ForceRecomp ),
- ( "hpc-no-auto", Opt_Hpc_No_Auto )
+ ( "hpc-no-auto", Opt_Hpc_No_Auto ),
+ ( "rewrite-rules", Opt_RewriteRules ),
+ ( "break-on-exception", Opt_BreakOnException ),
+ ( "vectorise", Opt_Vectorise )
]
-glasgowExtsFlags = [
- Opt_GlasgowExts,
- Opt_FFI,
- Opt_ImplicitParams,
- Opt_ScopedTypeVariables,
- Opt_IndexedTypes ]
+-- These -X<blah> flags can all be reversed with -Xno-<blah>
+xFlags :: [(String, DynFlag)]
+xFlags = [
+ ( "PatternGuards", Opt_PatternGuards ),
+ ( "MagicHash", Opt_MagicHash ),
+ ( "KindSignatures", Opt_KindSignatures ),
+ ( "EmptyDataDecls", Opt_EmptyDataDecls ),
+ ( "ParallelListComp", Opt_ParallelListComp ),
+ ( "FI", Opt_FFI ), -- support `-ffi'...
+ ( "FFI", Opt_FFI ), -- ...and also `-fffi'
+ ( "ForeignFunctionInterface", Opt_FFI ),
+
+ ( "RecursiveDo", Opt_RecursiveDo ),
+ ( "Arrows", Opt_Arrows ), -- arrow syntax
+ ( "Parr", Opt_PArr ),
+
+ ( "TH", Opt_TH ), -- support -fth
+ ( "TemplateHaskelll", Opt_TH ),
+
+ ( "Generics", Opt_Generics ),
+
+ ( "ImplicitPrelude", Opt_ImplicitPrelude ), -- On by default
+
+ ( "RecordWildCards", Opt_RecordWildCards ),
+ ( "RecordPuns", Opt_RecordPuns ),
+ ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields ),
+
+ ( "OverloadedStrings", Opt_OverloadedStrings ),
+ ( "GADTs", Opt_GADTs ),
+ ( "TypeFamilies", Opt_TypeFamilies ),
+ ( "BangPatterns", Opt_BangPatterns ),
+ ( "MonomorphismRestriction", Opt_MonomorphismRestriction ), -- On by default
+ ( "MonoPatBinds", Opt_MonoPatBinds ), -- On by default (which is not strictly H98)
+ ( "RelaxedPolyRec", Opt_RelaxedPolyRec),
+ ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules ),
+ ( "ImplicitParams", Opt_ImplicitParams ),
+ ( "ScopedTypeVariables", Opt_ScopedTypeVariables ),
+ ( "TypeSynonymInstances", Opt_TypeSynonymInstances ),
+ ( "FlexibleInstances", Opt_FlexibleInstances ),
+ ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses ),
+ ( "FunctionalDependencies", Opt_FunctionalDependencies ),
+ ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving ),
+ ( "AllowOverlappingInstances", Opt_AllowOverlappingInstances ),
+ ( "AllowUndecidableInstances", Opt_AllowUndecidableInstances ),
+ ( "AllowIncoherentInstances", Opt_AllowIncoherentInstances )
+ ]
+
+impliedFlags :: [(DynFlag, [DynFlag])]
+impliedFlags = [
+ ( Opt_GADTs, [Opt_RelaxedPolyRec] ) -- We want type-sig variables to be completely rigid for GADTs
+ ]
-isFFlag f = f `elem` (map fst fFlags)
-getFFlag f = fromJust (lookup f fFlags)
+glasgowExtsFlags = [ Opt_GlasgowExts
+ , Opt_FFI
+ , Opt_GADTs
+ , Opt_ImplicitParams
+ , Opt_ScopedTypeVariables
+ , Opt_TypeSynonymInstances
+ , Opt_FlexibleInstances
+ , Opt_MultiParamTypeClasses
+ , Opt_FunctionalDependencies
+ , Opt_MagicHash
+ , Opt_PatternGuards
+ , Opt_RecursiveDo
+ , Opt_ParallelListComp
+ , Opt_EmptyDataDecls
+ , Opt_KindSignatures
+ , Opt_GeneralizedNewtypeDeriving
+ , Opt_TypeFamilies ]
+
+------------------
+isNoFlag, isFlag :: [(String,a)] -> String -> Bool
+
+isFlag flags f = is_flag flags (normaliseFlag f)
+
+isNoFlag flags no_f
+ | Just f <- noFlag_maybe (normaliseFlag no_f) = is_flag flags f
+ | otherwise = False
+
+is_flag flags nf = any (\(ff,_) -> normaliseFlag ff == nf) flags
+ -- nf is normalised alreadly
+
+------------------
+getFlag, getNoFlag :: [(String,a)] -> String -> a
+
+getFlag flags f = get_flag flags (normaliseFlag f)
+
+getNoFlag flags f = get_flag flags (fromJust (noFlag_maybe (normaliseFlag f)))
+ -- The flag should be a no-flag already
+
+get_flag flags nf = case [ opt | (ff, opt) <- flags, normaliseFlag ff == nf] of
+ (o:os) -> o
+ [] -> panic ("get_flag " ++ nf)
+
+------------------
+noFlag_maybe :: String -> Maybe String
+-- The input is normalised already
+noFlag_maybe ('n' : 'o' : f) = Just f
+noFlag_maybe other = Nothing
+
+normaliseFlag :: String -> String
+-- Normalise a option flag by
+-- * map to lower case
+-- * removing hyphens
+-- Thus: -X=overloaded-strings or -XOverloadedStrings
+normaliseFlag [] = []
+normaliseFlag ('-':s) = normaliseFlag s
+normaliseFlag (c:s) = toLower c : normaliseFlag s
-- -----------------------------------------------------------------------------
-- Parsing the dynamic flags.
dfs <- getCmdLineState
putCmdLineState $! (f dfs)
+--------------------------
setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
-setDynFlag f = upd (\dfs -> dopt_set dfs f)
+setDynFlag f = upd (\dfs -> foldl dopt_set (dopt_set dfs f) deps)
+ where
+ deps = [ d | (f', ds) <- impliedFlags, f' == f, d <- ds ]
+ -- When you set f, set the ones it implies
+ -- When you un-set f, however, we don't un-set the things it implies
+ -- (except for -fno-glasgow-exts, which is treated specially)
+
unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
+--------------------------
setDumpFlag :: DynFlag -> OptKind DynP
setDumpFlag dump_flag
= NoArg (setDynFlag Opt_ForceRecomp >> setDynFlag dump_flag)
where
pid = stringToPackageId p
--- we can only switch between HscC, and HscAsmm with dynamic flags
--- (-fvia-C, -fasm, -filx respectively).
-setTarget l = upd (\dfs -> case hscTarget dfs of
- HscC -> dfs{ hscTarget = l }
- HscAsm -> dfs{ hscTarget = l }
- _ -> dfs)
+-- If we're linking a binary, then only targets that produce object
+-- code are allowed (requests for other target types are ignored).
+setTarget l = upd set
+ where
+ set dfs
+ | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
+ | otherwise = dfs
+
+-- Changes the target only if we're compiling object code. This is
+-- used by -fasm and -fvia-C, which switch from one to the other, but
+-- not from bytecode to object-code. The idea is that -fasm/-fvia-C
+-- can be safely used in an OPTIONS_GHC pragma.
+setObjTarget l = upd set
+ where
+ set dfs
+ | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
+ | otherwise = dfs
setOptLevel :: Int -> DynFlags -> DynFlags
setOptLevel n dflags
sta = opt_Static
in
( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
--- , if suffixMatch "mingw32" cTARGETPLATFORM then "-mno-cygwin" else ""
+-- , if "mingw32" `isSuffixOf` cTARGETPLATFORM then "-mno-cygwin" else ""
],
[ "-fno-defer-pop",
#ifdef HAVE_GCC_MNO_OMIT_LFPTR
projects / ghc-hetmet.git / blobdiff