Move all the CoreToDo stuff into CoreMonad
[ghc.git] / compiler / main / DynFlags.hs
1 -- |
2 -- Dynamic flags
3 --
4 --
5 -- (c) The University of Glasgow 2005
6 --
7
8 -- Most flags are dynamic flags, which means they can change from
9 -- compilation to compilation using @OPTIONS_GHC@ pragmas, and in a
10 -- multi-session GHC each session can be using different dynamic
11 -- flags. Dynamic flags can also be set at the prompt in GHCi.
12 module DynFlags (
13 -- * Dynamic flags and associated configuration types
14 DynFlag(..),
15 DynFlags(..),
16 HscTarget(..), isObjectTarget, defaultObjectTarget,
17 GhcMode(..), isOneShot,
18 GhcLink(..), isNoLink,
19 PackageFlag(..),
20 Option(..), showOpt,
21 DynLibLoader(..),
22 fFlags, xFlags,
23 dphPackage,
24 wayNames,
25
26 -- ** Manipulating DynFlags
27 defaultDynFlags, -- DynFlags
28 initDynFlags, -- DynFlags -> IO DynFlags
29
30 dopt, -- DynFlag -> DynFlags -> Bool
31 dopt_set, dopt_unset, -- DynFlags -> DynFlag -> DynFlags
32 getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
33 getVerbFlag,
34 updOptLevel,
35 setTmpDir,
36 setPackageName,
37 doingTickyProfiling,
38
39 -- ** Parsing DynFlags
40 parseDynamicFlags,
41 parseDynamicNoPackageFlags,
42 allFlags,
43
44 supportedLanguages, languageOptions,
45
46 -- ** DynFlag C compiler options
47 machdepCCOpts, picCCOpts,
48
49 -- * Configuration of the stg-to-stg passes
50 StgToDo(..),
51 getStgToDo,
52
53 -- * Compiler configuration suitable for display to the user
54 Printable(..),
55 compilerInfo
56 ) where
57
58 #include "HsVersions.h"
59
60 #ifndef OMIT_NATIVE_CODEGEN
61 import Platform
62 #endif
63 import Module
64 import PackageConfig
65 import PrelNames ( mAIN )
66 import StaticFlags
67 import {-# SOURCE #-} Packages (PackageState)
68 import DriverPhases ( Phase(..), phaseInputExt )
69 import Config
70 import CmdLineParser
71 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
72 import Panic
73 import Util
74 import Maybes ( orElse )
75 import SrcLoc
76 import FastString
77 import FiniteMap
78 import Outputable
79 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
80
81 import Data.IORef
82 import Control.Monad ( when )
83
84 import Data.Char
85 import Data.List
86 import System.FilePath
87 import System.IO ( stderr, hPutChar )
88
89 -- -----------------------------------------------------------------------------
90 -- DynFlags
91
92 -- | Enumerates the simple on-or-off dynamic flags
93 data DynFlag
94
95 -- debugging flags
96 = Opt_D_dump_cmm
97 | Opt_D_dump_cmmz
98 | Opt_D_dump_cmmz_pretty
99 | Opt_D_dump_cps_cmm
100 | Opt_D_dump_cvt_cmm
101 | Opt_D_dump_asm
102 | Opt_D_dump_asm_native
103 | Opt_D_dump_asm_liveness
104 | Opt_D_dump_asm_coalesce
105 | Opt_D_dump_asm_regalloc
106 | Opt_D_dump_asm_regalloc_stages
107 | Opt_D_dump_asm_conflicts
108 | Opt_D_dump_asm_stats
109 | Opt_D_dump_asm_expanded
110 | Opt_D_dump_cpranal
111 | Opt_D_dump_deriv
112 | Opt_D_dump_ds
113 | Opt_D_dump_flatC
114 | Opt_D_dump_foreign
115 | Opt_D_dump_inlinings
116 | Opt_D_dump_rule_firings
117 | Opt_D_dump_occur_anal
118 | Opt_D_dump_parsed
119 | Opt_D_dump_rn
120 | Opt_D_dump_simpl
121 | Opt_D_dump_simpl_iterations
122 | Opt_D_dump_simpl_phases
123 | Opt_D_dump_spec
124 | Opt_D_dump_prep
125 | Opt_D_dump_stg
126 | Opt_D_dump_stranal
127 | Opt_D_dump_tc
128 | Opt_D_dump_types
129 | Opt_D_dump_rules
130 | Opt_D_dump_cse
131 | Opt_D_dump_worker_wrapper
132 | Opt_D_dump_rn_trace
133 | Opt_D_dump_rn_stats
134 | Opt_D_dump_opt_cmm
135 | Opt_D_dump_simpl_stats
136 | Opt_D_dump_tc_trace
137 | Opt_D_dump_if_trace
138 | Opt_D_dump_splices
139 | Opt_D_dump_BCOs
140 | Opt_D_dump_vect
141 | Opt_D_dump_hpc
142 | Opt_D_dump_rtti
143 | Opt_D_source_stats
144 | Opt_D_verbose_core2core
145 | Opt_D_verbose_stg2stg
146 | Opt_D_dump_hi
147 | Opt_D_dump_hi_diffs
148 | Opt_D_dump_minimal_imports
149 | Opt_D_dump_mod_cycles
150 | Opt_D_dump_view_pattern_commoning
151 | Opt_D_faststring_stats
152 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
153 | Opt_D_no_debug_output
154 | Opt_DoCoreLinting
155 | Opt_DoStgLinting
156 | Opt_DoCmmLinting
157 | Opt_DoAsmLinting
158
159 | Opt_WarnIsError -- -Werror; makes warnings fatal
160 | Opt_WarnDuplicateExports
161 | Opt_WarnHiShadows
162 | Opt_WarnImplicitPrelude
163 | Opt_WarnIncompletePatterns
164 | Opt_WarnIncompletePatternsRecUpd
165 | Opt_WarnMissingFields
166 | Opt_WarnMissingMethods
167 | Opt_WarnMissingSigs
168 | Opt_WarnNameShadowing
169 | Opt_WarnOverlappingPatterns
170 | Opt_WarnSimplePatterns
171 | Opt_WarnTypeDefaults
172 | Opt_WarnMonomorphism
173 | Opt_WarnUnusedBinds
174 | Opt_WarnUnusedImports
175 | Opt_WarnUnusedMatches
176 | Opt_WarnWarningsDeprecations
177 | Opt_WarnDeprecatedFlags
178 | Opt_WarnDodgyExports
179 | Opt_WarnDodgyImports
180 | Opt_WarnOrphans
181 | Opt_WarnTabs
182 | Opt_WarnUnrecognisedPragmas
183 | Opt_WarnDodgyForeignImports
184 | Opt_WarnLazyUnliftedBindings
185 | Opt_WarnUnusedDoBind
186 | Opt_WarnWrongDoBind
187
188
189 -- language opts
190 | Opt_OverlappingInstances
191 | Opt_UndecidableInstances
192 | Opt_IncoherentInstances
193 | Opt_MonomorphismRestriction
194 | Opt_MonoPatBinds
195 | Opt_MonoLocalBinds
196 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
197 | Opt_ForeignFunctionInterface
198 | Opt_UnliftedFFITypes
199 | Opt_GHCForeignImportPrim
200 | Opt_PArr -- Syntactic support for parallel arrays
201 | Opt_Arrows -- Arrow-notation syntax
202 | Opt_TemplateHaskell
203 | Opt_QuasiQuotes
204 | Opt_ImplicitParams
205 | Opt_Generics -- "Derivable type classes"
206 | Opt_ImplicitPrelude
207 | Opt_ScopedTypeVariables
208 | Opt_UnboxedTuples
209 | Opt_BangPatterns
210 | Opt_TypeFamilies
211 | Opt_OverloadedStrings
212 | Opt_DisambiguateRecordFields
213 | Opt_RecordWildCards
214 | Opt_RecordPuns
215 | Opt_ViewPatterns
216 | Opt_GADTs
217 | Opt_RelaxedPolyRec
218 | Opt_NPlusKPatterns
219
220 | Opt_StandaloneDeriving
221 | Opt_DeriveDataTypeable
222 | Opt_DeriveFunctor
223 | Opt_DeriveTraversable
224 | Opt_DeriveFoldable
225
226 | Opt_TypeSynonymInstances
227 | Opt_FlexibleContexts
228 | Opt_FlexibleInstances
229 | Opt_ConstrainedClassMethods
230 | Opt_MultiParamTypeClasses
231 | Opt_FunctionalDependencies
232 | Opt_UnicodeSyntax
233 | Opt_PolymorphicComponents
234 | Opt_ExistentialQuantification
235 | Opt_MagicHash
236 | Opt_EmptyDataDecls
237 | Opt_KindSignatures
238 | Opt_ParallelListComp
239 | Opt_TransformListComp
240 | Opt_GeneralizedNewtypeDeriving
241 | Opt_RecursiveDo
242 | Opt_DoRec
243 | Opt_PostfixOperators
244 | Opt_TupleSections
245 | Opt_PatternGuards
246 | Opt_LiberalTypeSynonyms
247 | Opt_Rank2Types
248 | Opt_RankNTypes
249 | Opt_ImpredicativeTypes
250 | Opt_TypeOperators
251 | Opt_PackageImports
252 | Opt_NewQualifiedOperators
253 | Opt_ExplicitForAll
254 | Opt_AlternativeLayoutRule
255
256 | Opt_PrintExplicitForalls
257
258 -- optimisation opts
259 | Opt_Strictness
260 | Opt_FullLaziness
261 | Opt_FloatIn
262 | Opt_Specialise
263 | Opt_StaticArgumentTransformation
264 | Opt_CSE
265 | Opt_LiberateCase
266 | Opt_SpecConstr
267 | Opt_DoLambdaEtaExpansion
268 | Opt_IgnoreAsserts
269 | Opt_DoEtaReduction
270 | Opt_CaseMerge
271 | Opt_UnboxStrictFields
272 | Opt_MethodSharing
273 | Opt_DictsCheap
274 | Opt_EnableRewriteRules -- Apply rewrite rules during simplification
275 | Opt_Vectorise
276 | Opt_RegsGraph -- do graph coloring register allocation
277 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
278
279 -- Interface files
280 | Opt_IgnoreInterfacePragmas
281 | Opt_OmitInterfacePragmas
282 | Opt_ExposeAllUnfoldings
283
284 -- profiling opts
285 | Opt_AutoSccsOnAllToplevs
286 | Opt_AutoSccsOnExportedToplevs
287 | Opt_AutoSccsOnIndividualCafs
288
289 -- misc opts
290 | Opt_Cpp
291 | Opt_Pp
292 | Opt_ForceRecomp
293 | Opt_DryRun
294 | Opt_DoAsmMangling
295 | Opt_ExcessPrecision
296 | Opt_EagerBlackHoling
297 | Opt_ReadUserPackageConf
298 | Opt_NoHsMain
299 | Opt_SplitObjs
300 | Opt_StgStats
301 | Opt_HideAllPackages
302 | Opt_PrintBindResult
303 | Opt_Haddock
304 | Opt_HaddockOptions
305 | Opt_Hpc_No_Auto
306 | Opt_BreakOnException
307 | Opt_BreakOnError
308 | Opt_PrintEvldWithShow
309 | Opt_PrintBindContents
310 | Opt_GenManifest
311 | Opt_EmbedManifest
312 | Opt_EmitExternalCore
313 | Opt_SharedImplib
314 | Opt_BuildingCabalPackage
315
316 -- temporary flags
317 | Opt_RunCPS
318 | Opt_RunCPSZ
319 | Opt_ConvertToZipCfgAndBack
320 | Opt_AutoLinkPackages
321 | Opt_ImplicitImportQualified
322 | Opt_TryNewCodeGen
323
324 -- keeping stuff
325 | Opt_KeepHiDiffs
326 | Opt_KeepHcFiles
327 | Opt_KeepSFiles
328 | Opt_KeepRawSFiles
329 | Opt_KeepTmpFiles
330 | Opt_KeepRawTokenStream
331
332 deriving (Eq, Show)
333
334 -- | Contains not only a collection of 'DynFlag's but also a plethora of
335 -- information relating to the compilation of a single file or GHC session
336 data DynFlags = DynFlags {
337 ghcMode :: GhcMode,
338 ghcLink :: GhcLink,
339 hscTarget :: HscTarget,
340 hscOutName :: String, -- ^ Name of the output file
341 extCoreName :: String, -- ^ Name of the .hcr output file
342 verbosity :: Int, -- ^ Verbosity level: see Note [Verbosity levels]
343 optLevel :: Int, -- ^ Optimisation level
344 simplPhases :: Int, -- ^ Number of simplifier phases
345 maxSimplIterations :: Int, -- ^ Max simplifier iterations
346 shouldDumpSimplPhase :: Maybe String,
347 ruleCheck :: Maybe String,
348 strictnessBefore :: [Int], -- ^ Additional demand analysis
349
350 specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
351 specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
352 liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
353
354 #ifndef OMIT_NATIVE_CODEGEN
355 targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
356 #endif
357 stolen_x86_regs :: Int,
358 cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
359 importPaths :: [FilePath],
360 mainModIs :: Module,
361 mainFunIs :: Maybe String,
362 ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
363
364 dphBackend :: DPHBackend,
365
366 thisPackage :: PackageId, -- ^ name of package currently being compiled
367
368 -- ways
369 ways :: [Way], -- ^ Way flags from the command line
370 buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
371 rtsBuildTag :: String, -- ^ The RTS \"way\"
372
373 -- For object splitting
374 splitInfo :: Maybe (String,Int),
375
376 -- paths etc.
377 objectDir :: Maybe String,
378 dylibInstallName :: Maybe String,
379 hiDir :: Maybe String,
380 stubDir :: Maybe String,
381
382 objectSuf :: String,
383 hcSuf :: String,
384 hiSuf :: String,
385
386 outputFile :: Maybe String,
387 outputHi :: Maybe String,
388 dynLibLoader :: DynLibLoader,
389
390 -- | This is set by 'DriverPipeline.runPipeline' based on where
391 -- its output is going.
392 dumpPrefix :: Maybe FilePath,
393
394 -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
395 -- Set by @-ddump-file-prefix@
396 dumpPrefixForce :: Maybe FilePath,
397
398 includePaths :: [String],
399 libraryPaths :: [String],
400 frameworkPaths :: [String], -- used on darwin only
401 cmdlineFrameworks :: [String], -- ditto
402 tmpDir :: String, -- no trailing '/'
403
404 ghcUsagePath :: FilePath, -- Filled in by SysTools
405 ghciUsagePath :: FilePath, -- ditto
406
407 hpcDir :: String, -- ^ Path to store the .mix files
408
409 -- options for particular phases
410 opt_L :: [String],
411 opt_P :: [String],
412 opt_F :: [String],
413 opt_c :: [String],
414 opt_m :: [String],
415 opt_a :: [String],
416 opt_l :: [String],
417 opt_windres :: [String],
418
419 -- commands for particular phases
420 pgm_L :: String,
421 pgm_P :: (String,[Option]),
422 pgm_F :: String,
423 pgm_c :: (String,[Option]),
424 pgm_m :: (String,[Option]),
425 pgm_s :: (String,[Option]),
426 pgm_a :: (String,[Option]),
427 pgm_l :: (String,[Option]),
428 pgm_dll :: (String,[Option]),
429 pgm_T :: String,
430 pgm_sysman :: String,
431 pgm_windres :: String,
432
433 -- For ghc -M
434 depMakefile :: FilePath,
435 depIncludePkgDeps :: Bool,
436 depExcludeMods :: [ModuleName],
437 depSuffixes :: [String],
438
439 -- Package flags
440 extraPkgConfs :: [FilePath],
441 topDir :: FilePath, -- filled in by SysTools
442 systemPackageConfig :: FilePath, -- ditto
443 -- ^ The @-package-conf@ flags given on the command line, in the order
444 -- they appeared.
445
446 packageFlags :: [PackageFlag],
447 -- ^ The @-package@ and @-hide-package@ flags from the command-line
448
449 -- Package state
450 -- NB. do not modify this field, it is calculated by
451 -- Packages.initPackages and Packages.updatePackages.
452 pkgDatabase :: Maybe [PackageConfig],
453 pkgState :: PackageState,
454
455 -- Temporary files
456 -- These have to be IORefs, because the defaultCleanupHandler needs to
457 -- know what to clean when an exception happens
458 filesToClean :: IORef [FilePath],
459 dirsToClean :: IORef (FiniteMap FilePath FilePath),
460
461 -- hsc dynamic flags
462 flags :: [DynFlag],
463
464 -- | Message output action: use "ErrUtils" instead of this if you can
465 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
466
467 haddockOptions :: Maybe String
468 }
469
470 wayNames :: DynFlags -> [WayName]
471 wayNames = map wayName . ways
472
473 -- | The target code type of the compilation (if any).
474 --
475 -- Whenever you change the target, also make sure to set 'ghcLink' to
476 -- something sensible.
477 --
478 -- 'HscNothing' can be used to avoid generating any output, however, note
479 -- that:
480 --
481 -- * This will not run the desugaring step, thus no warnings generated in
482 -- this step will be output. In particular, this includes warnings related
483 -- to pattern matching. You can run the desugarer manually using
484 -- 'GHC.desugarModule'.
485 --
486 -- * If a program uses Template Haskell the typechecker may try to run code
487 -- from an imported module. This will fail if no code has been generated
488 -- for this module. You can use 'GHC.needsTemplateHaskell' to detect
489 -- whether this might be the case and choose to either switch to a
490 -- different target or avoid typechecking such modules. (The latter may
491 -- preferable for security reasons.)
492 --
493 data HscTarget
494 = HscC -- ^ Generate C code.
495 | HscAsm -- ^ Generate assembly using the native code generator.
496 | HscJava -- ^ Generate Java bytecode.
497 | HscInterpreted -- ^ Generate bytecode. (Requires 'LinkInMemory')
498 | HscNothing -- ^ Don't generate any code. See notes above.
499 deriving (Eq, Show)
500
501 -- | Will this target result in an object file on the disk?
502 isObjectTarget :: HscTarget -> Bool
503 isObjectTarget HscC = True
504 isObjectTarget HscAsm = True
505 isObjectTarget _ = False
506
507 -- | The 'GhcMode' tells us whether we're doing multi-module
508 -- compilation (controlled via the "GHC" API) or one-shot
509 -- (single-module) compilation. This makes a difference primarily to
510 -- the "Finder": in one-shot mode we look for interface files for
511 -- imported modules, but in multi-module mode we look for source files
512 -- in order to check whether they need to be recompiled.
513 data GhcMode
514 = CompManager -- ^ @\-\-make@, GHCi, etc.
515 | OneShot -- ^ @ghc -c Foo.hs@
516 | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
517 deriving Eq
518
519 instance Outputable GhcMode where
520 ppr CompManager = ptext (sLit "CompManager")
521 ppr OneShot = ptext (sLit "OneShot")
522 ppr MkDepend = ptext (sLit "MkDepend")
523
524 isOneShot :: GhcMode -> Bool
525 isOneShot OneShot = True
526 isOneShot _other = False
527
528 -- | What to do in the link step, if there is one.
529 data GhcLink
530 = NoLink -- ^ Don't link at all
531 | LinkBinary -- ^ Link object code into a binary
532 | LinkInMemory -- ^ Use the in-memory dynamic linker (works for both
533 -- bytecode and object code).
534 | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
535 deriving (Eq, Show)
536
537 isNoLink :: GhcLink -> Bool
538 isNoLink NoLink = True
539 isNoLink _ = False
540
541 -- Is it worth evaluating this Bool and caching it in the DynFlags value
542 -- during initDynFlags?
543 doingTickyProfiling :: DynFlags -> Bool
544 doingTickyProfiling _ = opt_Ticky
545 -- XXX -ticky is a static flag, because it implies -debug which is also
546 -- static. If the way flags were made dynamic, we could fix this.
547
548 data PackageFlag
549 = ExposePackage String
550 | ExposePackageId String
551 | HidePackage String
552 | IgnorePackage String
553 deriving Eq
554
555 defaultHscTarget :: HscTarget
556 defaultHscTarget = defaultObjectTarget
557
558 -- | The 'HscTarget' value corresponding to the default way to create
559 -- object files on the current platform.
560 defaultObjectTarget :: HscTarget
561 defaultObjectTarget
562 | cGhcWithNativeCodeGen == "YES" = HscAsm
563 | otherwise = HscC
564
565 data DynLibLoader
566 = Deployable
567 | Wrapped (Maybe String)
568 | SystemDependent
569 deriving Eq
570
571 -- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
572 initDynFlags :: DynFlags -> IO DynFlags
573 initDynFlags dflags = do
574 -- someday these will be dynamic flags
575 ways <- readIORef v_Ways
576 refFilesToClean <- newIORef []
577 refDirsToClean <- newIORef emptyFM
578 return dflags{
579 ways = ways,
580 buildTag = mkBuildTag (filter (not . wayRTSOnly) ways),
581 rtsBuildTag = mkBuildTag ways,
582 filesToClean = refFilesToClean,
583 dirsToClean = refDirsToClean
584 }
585
586 -- | The normal 'DynFlags'. Note that they is not suitable for use in this form
587 -- and must be fully initialized by 'GHC.newSession' first.
588 defaultDynFlags :: DynFlags
589 defaultDynFlags =
590 DynFlags {
591 ghcMode = CompManager,
592 ghcLink = LinkBinary,
593 hscTarget = defaultHscTarget,
594 hscOutName = "",
595 extCoreName = "",
596 verbosity = 0,
597 optLevel = 0,
598 simplPhases = 2,
599 maxSimplIterations = 4,
600 shouldDumpSimplPhase = Nothing,
601 ruleCheck = Nothing,
602 specConstrThreshold = Just 200,
603 specConstrCount = Just 3,
604 liberateCaseThreshold = Just 200,
605 strictnessBefore = [],
606
607 #ifndef OMIT_NATIVE_CODEGEN
608 targetPlatform = defaultTargetPlatform,
609 #endif
610 stolen_x86_regs = 4,
611 cmdlineHcIncludes = [],
612 importPaths = ["."],
613 mainModIs = mAIN,
614 mainFunIs = Nothing,
615 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
616
617 dphBackend = DPHPar,
618
619 thisPackage = mainPackageId,
620
621 objectDir = Nothing,
622 dylibInstallName = Nothing,
623 hiDir = Nothing,
624 stubDir = Nothing,
625
626 objectSuf = phaseInputExt StopLn,
627 hcSuf = phaseInputExt HCc,
628 hiSuf = "hi",
629
630 outputFile = Nothing,
631 outputHi = Nothing,
632 dynLibLoader = SystemDependent,
633 dumpPrefix = Nothing,
634 dumpPrefixForce = Nothing,
635 includePaths = [],
636 libraryPaths = [],
637 frameworkPaths = [],
638 cmdlineFrameworks = [],
639 tmpDir = cDEFAULT_TMPDIR,
640
641 hpcDir = ".hpc",
642
643 opt_L = [],
644 opt_P = (if opt_PIC
645 then ["-D__PIC__", "-U __PIC__"] -- this list is reversed
646 else []),
647 opt_F = [],
648 opt_c = [],
649 opt_a = [],
650 opt_m = [],
651 opt_l = [],
652 opt_windres = [],
653
654 extraPkgConfs = [],
655 packageFlags = [],
656 pkgDatabase = Nothing,
657 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
658 ways = panic "defaultDynFlags: No ways",
659 buildTag = panic "defaultDynFlags: No buildTag",
660 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
661 splitInfo = Nothing,
662 -- initSysTools fills all these in
663 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
664 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
665 topDir = panic "defaultDynFlags: No topDir",
666 systemPackageConfig = panic "no systemPackageConfig: call GHC.setSessionDynFlags",
667 pgm_L = panic "defaultDynFlags: No pgm_L",
668 pgm_P = panic "defaultDynFlags: No pgm_P",
669 pgm_F = panic "defaultDynFlags: No pgm_F",
670 pgm_c = panic "defaultDynFlags: No pgm_c",
671 pgm_m = panic "defaultDynFlags: No pgm_m",
672 pgm_s = panic "defaultDynFlags: No pgm_s",
673 pgm_a = panic "defaultDynFlags: No pgm_a",
674 pgm_l = panic "defaultDynFlags: No pgm_l",
675 pgm_dll = panic "defaultDynFlags: No pgm_dll",
676 pgm_T = panic "defaultDynFlags: No pgm_T",
677 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
678 pgm_windres = panic "defaultDynFlags: No pgm_windres",
679 -- end of initSysTools values
680 -- ghc -M values
681 depMakefile = "Makefile",
682 depIncludePkgDeps = False,
683 depExcludeMods = [],
684 depSuffixes = [],
685 -- end of ghc -M values
686 filesToClean = panic "defaultDynFlags: No filesToClean",
687 dirsToClean = panic "defaultDynFlags: No dirsToClean",
688 haddockOptions = Nothing,
689 flags = [
690 Opt_AutoLinkPackages,
691 Opt_ReadUserPackageConf,
692
693 Opt_MonoPatBinds, -- Experimentally, I'm making this non-standard
694 -- behaviour the default, to see if anyone notices
695 -- SLPJ July 06
696
697 Opt_ImplicitPrelude,
698 Opt_MonomorphismRestriction,
699 Opt_NPlusKPatterns,
700
701 Opt_MethodSharing,
702
703 Opt_DoAsmMangling,
704
705 Opt_SharedImplib,
706
707 Opt_GenManifest,
708 Opt_EmbedManifest,
709 Opt_PrintBindContents
710 ]
711 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
712 -- The default -O0 options
713 ++ standardWarnings,
714
715 log_action = \severity srcSpan style msg ->
716 case severity of
717 SevInfo -> printErrs (msg style)
718 SevFatal -> printErrs (msg style)
719 _ -> do
720 hPutChar stderr '\n'
721 printErrs ((mkLocMessage srcSpan msg) style)
722 -- careful (#2302): printErrs prints in UTF-8, whereas
723 -- converting to string first and using hPutStr would
724 -- just emit the low 8 bits of each unicode char.
725 }
726
727 {-
728 Note [Verbosity levels]
729 ~~~~~~~~~~~~~~~~~~~~~~~
730 0 | print errors & warnings only
731 1 | minimal verbosity: print "compiling M ... done." for each module.
732 2 | equivalent to -dshow-passes
733 3 | equivalent to existing "ghc -v"
734 4 | "ghc -v -ddump-most"
735 5 | "ghc -v -ddump-all"
736 -}
737
738 -- | Test whether a 'DynFlag' is set
739 dopt :: DynFlag -> DynFlags -> Bool
740 dopt f dflags = f `elem` (flags dflags)
741
742 -- | Set a 'DynFlag'
743 dopt_set :: DynFlags -> DynFlag -> DynFlags
744 dopt_set dfs f = dfs{ flags = f : flags dfs }
745
746 -- | Unset a 'DynFlag'
747 dopt_unset :: DynFlags -> DynFlag -> DynFlags
748 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
749
750 -- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
751 getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
752 -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
753 -> [a] -- ^ Correctly ordered extracted options
754 getOpts dflags opts = reverse (opts dflags)
755 -- We add to the options from the front, so we need to reverse the list
756
757 -- | Gets the verbosity flag for the current verbosity level. This is fed to
758 -- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
759 getVerbFlag :: DynFlags -> String
760 getVerbFlag dflags
761 | verbosity dflags >= 3 = "-v"
762 | otherwise = ""
763
764 setObjectDir, setHiDir, setStubDir, setOutputDir, setDylibInstallName,
765 setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
766 setPgmP, setPgmL, setPgmF, setPgmc, setPgmm, setPgms, setPgma, setPgml, setPgmdll, setPgmwindres,
767 addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptwindres,
768 addCmdlineFramework, addHaddockOpts
769 :: String -> DynFlags -> DynFlags
770 setOutputFile, setOutputHi, setDumpPrefixForce
771 :: Maybe String -> DynFlags -> DynFlags
772
773 setObjectDir f d = d{ objectDir = Just f}
774 setHiDir f d = d{ hiDir = Just f}
775 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
776 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
777 -- \#included from the .hc file when compiling with -fvia-C.
778 setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
779 setDylibInstallName f d = d{ dylibInstallName = Just f}
780
781 setObjectSuf f d = d{ objectSuf = f}
782 setHiSuf f d = d{ hiSuf = f}
783 setHcSuf f d = d{ hcSuf = f}
784
785 setOutputFile f d = d{ outputFile = f}
786 setOutputHi f d = d{ outputHi = f}
787
788 parseDynLibLoaderMode f d =
789 case splitAt 8 f of
790 ("deploy", "") -> d{ dynLibLoader = Deployable }
791 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
792 ("wrapped", "") -> d{ dynLibLoader = Wrapped Nothing }
793 ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
794 ("wrapped:", flex) -> d{ dynLibLoader = Wrapped (Just flex) }
795 _ -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
796
797 setDumpPrefixForce f d = d { dumpPrefixForce = f}
798
799 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
800 -- Config.hs should really use Option.
801 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
802
803 setPgmL f d = d{ pgm_L = f}
804 setPgmF f d = d{ pgm_F = f}
805 setPgmc f d = d{ pgm_c = (f,[])}
806 setPgmm f d = d{ pgm_m = (f,[])}
807 setPgms f d = d{ pgm_s = (f,[])}
808 setPgma f d = d{ pgm_a = (f,[])}
809 setPgml f d = d{ pgm_l = (f,[])}
810 setPgmdll f d = d{ pgm_dll = (f,[])}
811 setPgmwindres f d = d{ pgm_windres = f}
812
813 addOptL f d = d{ opt_L = f : opt_L d}
814 addOptP f d = d{ opt_P = f : opt_P d}
815 addOptF f d = d{ opt_F = f : opt_F d}
816 addOptc f d = d{ opt_c = f : opt_c d}
817 addOptm f d = d{ opt_m = f : opt_m d}
818 addOpta f d = d{ opt_a = f : opt_a d}
819 addOptl f d = d{ opt_l = f : opt_l d}
820 addOptwindres f d = d{ opt_windres = f : opt_windres d}
821
822 setDepMakefile :: FilePath -> DynFlags -> DynFlags
823 setDepMakefile f d = d { depMakefile = deOptDep f }
824
825 setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
826 setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
827
828 addDepExcludeMod :: String -> DynFlags -> DynFlags
829 addDepExcludeMod m d
830 = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
831
832 addDepSuffix :: FilePath -> DynFlags -> DynFlags
833 addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
834
835 -- XXX Legacy code:
836 -- We used to use "-optdep-flag -optdeparg", so for legacy applications
837 -- we need to strip the "-optdep" off of the arg
838 deOptDep :: String -> String
839 deOptDep x = case stripPrefix "-optdep" x of
840 Just rest -> rest
841 Nothing -> x
842
843 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
844
845 addHaddockOpts f d = d{ haddockOptions = Just f}
846
847 -- -----------------------------------------------------------------------------
848 -- Command-line options
849
850 -- | When invoking external tools as part of the compilation pipeline, we
851 -- pass these a sequence of options on the command-line. Rather than
852 -- just using a list of Strings, we use a type that allows us to distinguish
853 -- between filepaths and 'other stuff'. The reason for this is that
854 -- this type gives us a handle on transforming filenames, and filenames only,
855 -- to whatever format they're expected to be on a particular platform.
856 data Option
857 = FileOption -- an entry that _contains_ filename(s) / filepaths.
858 String -- a non-filepath prefix that shouldn't be
859 -- transformed (e.g., "/out=")
860 String -- the filepath/filename portion
861 | Option String
862
863 showOpt :: Option -> String
864 showOpt (FileOption pre f) = pre ++ f
865 showOpt (Option s) = s
866
867 -----------------------------------------------------------------------------
868 -- Setting the optimisation level
869
870 updOptLevel :: Int -> DynFlags -> DynFlags
871 -- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
872 updOptLevel n dfs
873 = dfs2{ optLevel = final_n }
874 where
875 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
876 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
877 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
878
879 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
880 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
881
882 optLevelFlags :: [([Int], DynFlag)]
883 optLevelFlags
884 = [ ([0], Opt_IgnoreInterfacePragmas)
885 , ([0], Opt_OmitInterfacePragmas)
886
887 , ([1,2], Opt_IgnoreAsserts)
888 , ([1,2], Opt_EnableRewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
889 -- in PrelRules
890 , ([1,2], Opt_DoEtaReduction)
891 , ([1,2], Opt_CaseMerge)
892 , ([1,2], Opt_Strictness)
893 , ([1,2], Opt_CSE)
894 , ([1,2], Opt_FullLaziness)
895 , ([1,2], Opt_Specialise)
896 , ([1,2], Opt_FloatIn)
897
898 , ([2], Opt_LiberateCase)
899 , ([2], Opt_SpecConstr)
900
901 -- , ([2], Opt_StaticArgumentTransformation)
902 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
903 -- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
904 -- several improvements to the heuristics, and I'm concerned that without
905 -- those changes SAT will interfere with some attempts to write "high
906 -- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
907 -- this year. In particular, the version in HEAD lacks the tail call
908 -- criterion, so many things that look like reasonable loops will be
909 -- turned into functions with extra (unneccesary) thunk creation.
910
911 , ([0,1,2], Opt_DoLambdaEtaExpansion)
912 -- This one is important for a tiresome reason:
913 -- we want to make sure that the bindings for data
914 -- constructors are eta-expanded. This is probably
915 -- a good thing anyway, but it seems fragile.
916 ]
917
918 -- -----------------------------------------------------------------------------
919 -- Standard sets of warning options
920
921 standardWarnings :: [DynFlag]
922 standardWarnings
923 = [ Opt_WarnWarningsDeprecations,
924 Opt_WarnDeprecatedFlags,
925 Opt_WarnUnrecognisedPragmas,
926 Opt_WarnOverlappingPatterns,
927 Opt_WarnMissingFields,
928 Opt_WarnMissingMethods,
929 Opt_WarnDuplicateExports,
930 Opt_WarnLazyUnliftedBindings,
931 Opt_WarnDodgyForeignImports,
932 Opt_WarnWrongDoBind
933 ]
934
935 minusWOpts :: [DynFlag]
936 minusWOpts
937 = standardWarnings ++
938 [ Opt_WarnUnusedBinds,
939 Opt_WarnUnusedMatches,
940 Opt_WarnUnusedImports,
941 Opt_WarnIncompletePatterns,
942 Opt_WarnDodgyExports,
943 Opt_WarnDodgyImports
944 ]
945
946 minusWallOpts :: [DynFlag]
947 minusWallOpts
948 = minusWOpts ++
949 [ Opt_WarnTypeDefaults,
950 Opt_WarnNameShadowing,
951 Opt_WarnMissingSigs,
952 Opt_WarnHiShadows,
953 Opt_WarnOrphans,
954 Opt_WarnUnusedDoBind
955 ]
956
957 -- minuswRemovesOpts should be every warning option
958 minuswRemovesOpts :: [DynFlag]
959 minuswRemovesOpts
960 = minusWallOpts ++
961 [Opt_WarnImplicitPrelude,
962 Opt_WarnIncompletePatternsRecUpd,
963 Opt_WarnSimplePatterns,
964 Opt_WarnMonomorphism,
965 Opt_WarnUnrecognisedPragmas,
966 Opt_WarnTabs
967 ]
968
969 -- -----------------------------------------------------------------------------
970 -- StgToDo: abstraction of stg-to-stg passes to run.
971
972 data StgToDo
973 = StgDoMassageForProfiling -- should be (next to) last
974 -- There's also setStgVarInfo, but its absolute "lastness"
975 -- is so critical that it is hardwired in (no flag).
976 | D_stg_stats
977
978 getStgToDo :: DynFlags -> [StgToDo]
979 getStgToDo dflags
980 = todo2
981 where
982 stg_stats = dopt Opt_StgStats dflags
983
984 todo1 = if stg_stats then [D_stg_stats] else []
985
986 todo2 | WayProf `elem` wayNames dflags
987 = StgDoMassageForProfiling : todo1
988 | otherwise
989 = todo1
990
991 -- -----------------------------------------------------------------------------
992 -- DynFlags parser
993
994 allFlags :: [String]
995 allFlags = map ('-':) $
996 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
997 map ("fno-"++) flags ++
998 map ("f"++) flags ++
999 map ("X"++) supportedLanguages ++
1000 map ("XNo"++) supportedLanguages
1001 where ok (PrefixPred _ _) = False
1002 ok _ = True
1003 flags = [ name | (name, _, _) <- fFlags ]
1004
1005 dynamic_flags :: [Flag DynP]
1006 dynamic_flags = [
1007 Flag "n" (NoArg (setDynFlag Opt_DryRun)) Supported
1008 , Flag "cpp" (NoArg (setDynFlag Opt_Cpp)) Supported
1009 , Flag "F" (NoArg (setDynFlag Opt_Pp)) Supported
1010 , Flag "#include" (HasArg (addCmdlineHCInclude))
1011 (Deprecated "No longer has any effect")
1012 , Flag "v" (OptIntSuffix setVerbosity) Supported
1013
1014 ------- Specific phases --------------------------------------------
1015 , Flag "pgmL" (HasArg (upd . setPgmL)) Supported
1016 , Flag "pgmP" (HasArg (upd . setPgmP)) Supported
1017 , Flag "pgmF" (HasArg (upd . setPgmF)) Supported
1018 , Flag "pgmc" (HasArg (upd . setPgmc)) Supported
1019 , Flag "pgmm" (HasArg (upd . setPgmm)) Supported
1020 , Flag "pgms" (HasArg (upd . setPgms)) Supported
1021 , Flag "pgma" (HasArg (upd . setPgma)) Supported
1022 , Flag "pgml" (HasArg (upd . setPgml)) Supported
1023 , Flag "pgmdll" (HasArg (upd . setPgmdll)) Supported
1024 , Flag "pgmwindres" (HasArg (upd . setPgmwindres)) Supported
1025
1026 , Flag "optL" (HasArg (upd . addOptL)) Supported
1027 , Flag "optP" (HasArg (upd . addOptP)) Supported
1028 , Flag "optF" (HasArg (upd . addOptF)) Supported
1029 , Flag "optc" (HasArg (upd . addOptc)) Supported
1030 , Flag "optm" (HasArg (upd . addOptm)) Supported
1031 , Flag "opta" (HasArg (upd . addOpta)) Supported
1032 , Flag "optl" (HasArg (upd . addOptl)) Supported
1033 , Flag "optwindres" (HasArg (upd . addOptwindres)) Supported
1034
1035 , Flag "split-objs"
1036 (NoArg (if can_split then setDynFlag Opt_SplitObjs else return ()))
1037 Supported
1038
1039 -------- ghc -M -----------------------------------------------------
1040 , Flag "dep-suffix" (HasArg (upd . addDepSuffix)) Supported
1041 , Flag "optdep-s" (HasArg (upd . addDepSuffix))
1042 (Deprecated "Use -dep-suffix instead")
1043 , Flag "dep-makefile" (HasArg (upd . setDepMakefile)) Supported
1044 , Flag "optdep-f" (HasArg (upd . setDepMakefile))
1045 (Deprecated "Use -dep-makefile instead")
1046 , Flag "optdep-w" (NoArg (return ()))
1047 (Deprecated "-optdep-w doesn't do anything")
1048 , Flag "include-pkg-deps" (NoArg (upd (setDepIncludePkgDeps True))) Supported
1049 , Flag "optdep--include-prelude" (NoArg (upd (setDepIncludePkgDeps True)))
1050 (Deprecated "Use -include-pkg-deps instead")
1051 , Flag "optdep--include-pkg-deps" (NoArg (upd (setDepIncludePkgDeps True)))
1052 (Deprecated "Use -include-pkg-deps instead")
1053 , Flag "exclude-module" (HasArg (upd . addDepExcludeMod)) Supported
1054 , Flag "optdep--exclude-module" (HasArg (upd . addDepExcludeMod))
1055 (Deprecated "Use -exclude-module instead")
1056 , Flag "optdep-x" (HasArg (upd . addDepExcludeMod))
1057 (Deprecated "Use -exclude-module instead")
1058
1059 -------- Linking ----------------------------------------------------
1060 , Flag "c" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1061 Supported
1062 , Flag "no-link" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1063 (Deprecated "Use -c instead")
1064 , Flag "shared" (NoArg (upd $ \d -> d{ ghcLink=LinkDynLib } ))
1065 Supported
1066 , Flag "dynload" (HasArg (upd . parseDynLibLoaderMode))
1067 Supported
1068 , Flag "dylib-install-name" (HasArg (upd . setDylibInstallName)) Supported
1069
1070 ------- Libraries ---------------------------------------------------
1071 , Flag "L" (Prefix addLibraryPath ) Supported
1072 , Flag "l" (AnySuffix (\s -> do upd (addOptl s))) Supported
1073
1074 ------- Frameworks --------------------------------------------------
1075 -- -framework-path should really be -F ...
1076 , Flag "framework-path" (HasArg addFrameworkPath ) Supported
1077 , Flag "framework" (HasArg (upd . addCmdlineFramework)) Supported
1078
1079 ------- Output Redirection ------------------------------------------
1080 , Flag "odir" (HasArg (upd . setObjectDir)) Supported
1081 , Flag "o" (SepArg (upd . setOutputFile . Just)) Supported
1082 , Flag "ohi" (HasArg (upd . setOutputHi . Just )) Supported
1083 , Flag "osuf" (HasArg (upd . setObjectSuf)) Supported
1084 , Flag "hcsuf" (HasArg (upd . setHcSuf)) Supported
1085 , Flag "hisuf" (HasArg (upd . setHiSuf)) Supported
1086 , Flag "hidir" (HasArg (upd . setHiDir)) Supported
1087 , Flag "tmpdir" (HasArg (upd . setTmpDir)) Supported
1088 , Flag "stubdir" (HasArg (upd . setStubDir)) Supported
1089 , Flag "outputdir" (HasArg (upd . setOutputDir)) Supported
1090 , Flag "ddump-file-prefix" (HasArg (upd . setDumpPrefixForce . Just))
1091 Supported
1092
1093 ------- Keeping temporary files -------------------------------------
1094 -- These can be singular (think ghc -c) or plural (think ghc --make)
1095 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1096 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1097 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1098 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1099 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1100 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1101 -- This only makes sense as plural
1102 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles)) Supported
1103
1104 ------- Miscellaneous ----------------------------------------------
1105 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages)) Supported
1106 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain)) Supported
1107 , Flag "main-is" (SepArg setMainIs ) Supported
1108 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock)) Supported
1109 , Flag "haddock-opts" (HasArg (upd . addHaddockOpts)) Supported
1110 , Flag "hpcdir" (SepArg setOptHpcDir) Supported
1111
1112 ------- recompilation checker --------------------------------------
1113 , Flag "recomp" (NoArg (unSetDynFlag Opt_ForceRecomp))
1114 (Deprecated "Use -fno-force-recomp instead")
1115 , Flag "no-recomp" (NoArg (setDynFlag Opt_ForceRecomp))
1116 (Deprecated "Use -fforce-recomp instead")
1117
1118 ------ HsCpp opts ---------------------------------------------------
1119 , Flag "D" (AnySuffix (upd . addOptP)) Supported
1120 , Flag "U" (AnySuffix (upd . addOptP)) Supported
1121
1122 ------- Include/Import Paths ----------------------------------------
1123 , Flag "I" (Prefix addIncludePath) Supported
1124 , Flag "i" (OptPrefix addImportPath ) Supported
1125
1126 ------ Debugging ----------------------------------------------------
1127 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats)) Supported
1128
1129 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1130 Supported
1131 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1132 Supported
1133 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1134 Supported
1135 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1136 Supported
1137 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1138 Supported
1139 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1140 Supported
1141 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1142 Supported
1143 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1144 Supported
1145 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1146 Supported
1147 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1148 Supported
1149 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1150 Supported
1151 , Flag "ddump-asm-regalloc-stages"
1152 (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1153 Supported
1154 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1155 Supported
1156 , Flag "ddump-asm-expanded" (setDumpFlag Opt_D_dump_asm_expanded)
1157 Supported
1158 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1159 Supported
1160 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1161 Supported
1162 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1163 Supported
1164 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1165 Supported
1166 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1167 Supported
1168 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1169 Supported
1170 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1171 Supported
1172 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1173 Supported
1174 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1175 Supported
1176 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1177 Supported
1178 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1179 Supported
1180 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1181 Supported
1182 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1183 Supported
1184 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1185 Supported
1186 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1187 Supported
1188 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1189 Supported
1190 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1191 Supported
1192 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1193 Supported
1194 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1195 Supported
1196 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1197 Supported
1198 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1199 Supported
1200 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1201 Supported
1202 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1203 Supported
1204 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1205 Supported
1206 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1207 Supported
1208 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1209 Supported
1210 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1211 Supported
1212 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1213 Supported
1214 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1215 Supported
1216 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1217 Supported
1218 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1219 Supported
1220 , Flag "dverbose-core2core" (NoArg (do { setVerbosity (Just 2)
1221 ; setVerboseCore2Core }))
1222 Supported
1223 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1224 Supported
1225 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1226 Supported
1227 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1228 Supported
1229 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1230 Supported
1231 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1232 Supported
1233 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1234 Supported
1235 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1236 Supported
1237 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1238 Supported
1239 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1240 Supported
1241 , Flag "ddump-rtti" (setDumpFlag Opt_D_dump_rtti)
1242 Supported
1243
1244 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1245 Supported
1246 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1247 Supported
1248 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1249 Supported
1250 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1251 Supported
1252 , Flag "dshow-passes"
1253 (NoArg (do forceRecompile
1254 setVerbosity (Just 2)))
1255 Supported
1256 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1257 Supported
1258
1259 ------ Machine dependant (-m<blah>) stuff ---------------------------
1260
1261 , Flag "monly-2-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 2}) ))
1262 Supported
1263 , Flag "monly-3-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 3}) ))
1264 Supported
1265 , Flag "monly-4-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 4}) ))
1266 Supported
1267
1268 ------ Warning opts -------------------------------------------------
1269 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1270 Supported
1271 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1272 Supported
1273 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1274 Supported
1275 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1276 Supported
1277 , Flag "Wnot" (NoArg (mapM_ unSetDynFlag minusWallOpts))
1278 (Deprecated "Use -w instead")
1279 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1280 Supported
1281
1282 ------ Optimisation flags ------------------------------------------
1283 , Flag "O" (NoArg (upd (setOptLevel 1))) Supported
1284 , Flag "Onot" (NoArg (upd (setOptLevel 0)))
1285 (Deprecated "Use -O0 instead")
1286 , Flag "Odph" (NoArg (upd setDPHOpt)) Supported
1287 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1288 Supported
1289 -- If the number is missing, use 1
1290
1291 , Flag "fsimplifier-phases"
1292 (IntSuffix (\n -> upd (\dfs -> dfs{ simplPhases = n })))
1293 Supported
1294 , Flag "fmax-simplifier-iterations"
1295 (IntSuffix (\n -> upd (\dfs -> dfs{ maxSimplIterations = n })))
1296 Supported
1297
1298 , Flag "fspec-constr-threshold"
1299 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrThreshold = Just n })))
1300 Supported
1301 , Flag "fno-spec-constr-threshold"
1302 (NoArg (upd (\dfs -> dfs{ specConstrThreshold = Nothing })))
1303 Supported
1304 , Flag "fspec-constr-count"
1305 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrCount = Just n })))
1306 Supported
1307 , Flag "fno-spec-constr-count"
1308 (NoArg (upd (\dfs -> dfs{ specConstrCount = Nothing })))
1309 Supported
1310 , Flag "fliberate-case-threshold"
1311 (IntSuffix (\n -> upd (\dfs -> dfs{ liberateCaseThreshold = Just n })))
1312 Supported
1313 , Flag "fno-liberate-case-threshold"
1314 (NoArg (upd (\dfs -> dfs{ liberateCaseThreshold = Nothing })))
1315 Supported
1316
1317 , Flag "frule-check"
1318 (SepArg (\s -> upd (\dfs -> dfs{ ruleCheck = Just s })))
1319 Supported
1320 , Flag "fcontext-stack"
1321 (IntSuffix $ \n -> upd $ \dfs -> dfs{ ctxtStkDepth = n })
1322 Supported
1323
1324 , Flag "fstrictness-before"
1325 (IntSuffix (\n -> upd (\dfs -> dfs{ strictnessBefore = n : strictnessBefore dfs })))
1326 Supported
1327
1328 ------ Profiling ----------------------------------------------------
1329
1330 -- XXX Should the -f* flags be deprecated?
1331 -- They don't seem to be documented
1332 , Flag "fauto-sccs-on-all-toplevs"
1333 (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1334 Supported
1335 , Flag "auto-all"
1336 (NoArg (setDynFlag Opt_AutoSccsOnAllToplevs))
1337 Supported
1338 , Flag "no-auto-all"
1339 (NoArg (unSetDynFlag Opt_AutoSccsOnAllToplevs))
1340 Supported
1341 , Flag "fauto-sccs-on-exported-toplevs"
1342 (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1343 Supported
1344 , Flag "auto"
1345 (NoArg (setDynFlag Opt_AutoSccsOnExportedToplevs))
1346 Supported
1347 , Flag "no-auto"
1348 (NoArg (unSetDynFlag Opt_AutoSccsOnExportedToplevs))
1349 Supported
1350 , Flag "fauto-sccs-on-individual-cafs"
1351 (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1352 Supported
1353 , Flag "caf-all"
1354 (NoArg (setDynFlag Opt_AutoSccsOnIndividualCafs))
1355 Supported
1356 , Flag "no-caf-all"
1357 (NoArg (unSetDynFlag Opt_AutoSccsOnIndividualCafs))
1358 Supported
1359
1360 ------ DPH flags ----------------------------------------------------
1361
1362 , Flag "fdph-seq"
1363 (NoArg (setDPHBackend DPHSeq))
1364 Supported
1365 , Flag "fdph-par"
1366 (NoArg (setDPHBackend DPHPar))
1367 Supported
1368 , Flag "fdph-this"
1369 (NoArg (setDPHBackend DPHThis))
1370 Supported
1371
1372 ------ Compiler flags -----------------------------------------------
1373
1374 , Flag "fasm" (NoArg (setObjTarget HscAsm)) Supported
1375 , Flag "fvia-c" (NoArg (setObjTarget HscC)) Supported
1376 , Flag "fvia-C" (NoArg (setObjTarget HscC)) Supported
1377
1378 , Flag "fno-code" (NoArg (setTarget HscNothing)) Supported
1379 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted)) Supported
1380 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget)) Supported
1381
1382 , Flag "fglasgow-exts" (NoArg (mapM_ setDynFlag glasgowExtsFlags))
1383 Supported
1384 , Flag "fno-glasgow-exts" (NoArg (mapM_ unSetDynFlag glasgowExtsFlags))
1385 Supported
1386 ]
1387 ++ map (mkFlag True "f" setDynFlag ) fFlags
1388 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1389 ++ map (mkFlag True "X" setDynFlag ) xFlags
1390 ++ map (mkFlag False "XNo" unSetDynFlag) xFlags
1391
1392 package_flags :: [Flag DynP]
1393 package_flags = [
1394 ------- Packages ----------------------------------------------------
1395 Flag "package-conf" (HasArg extraPkgConf_) Supported
1396 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1397 Supported
1398 , Flag "package-name" (HasArg (upd . setPackageName)) Supported
1399 , Flag "package-id" (HasArg exposePackageId) Supported
1400 , Flag "package" (HasArg exposePackage) Supported
1401 , Flag "hide-package" (HasArg hidePackage) Supported
1402 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1403 Supported
1404 , Flag "ignore-package" (HasArg ignorePackage)
1405 Supported
1406 , Flag "syslib" (HasArg exposePackage)
1407 (Deprecated "Use -package instead")
1408 ]
1409
1410 mkFlag :: Bool -- ^ True <=> it should be turned on
1411 -> String -- ^ The flag prefix
1412 -> (DynFlag -> DynP ())
1413 -> (String, DynFlag, Bool -> Deprecated)
1414 -> Flag DynP
1415 mkFlag turnOn flagPrefix f (name, dynflag, deprecated)
1416 = Flag (flagPrefix ++ name) (NoArg (f dynflag)) (deprecated turnOn)
1417
1418 deprecatedForLanguage :: String -> Bool -> Deprecated
1419 deprecatedForLanguage lang turn_on
1420 = Deprecated ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
1421 where
1422 flag | turn_on = lang
1423 | otherwise = "No"++lang
1424
1425 useInstead :: String -> Bool -> Deprecated
1426 useInstead flag turn_on
1427 = Deprecated ("Use -f" ++ no ++ flag ++ " instead")
1428 where
1429 no = if turn_on then "" else "no-"
1430
1431 -- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
1432 fFlags :: [(String, DynFlag, Bool -> Deprecated)]
1433 fFlags = [
1434 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, const Supported ),
1435 ( "warn-dodgy-exports", Opt_WarnDodgyExports, const Supported ),
1436 ( "warn-dodgy-imports", Opt_WarnDodgyImports, const Supported ),
1437 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, const Supported ),
1438 ( "warn-hi-shadowing", Opt_WarnHiShadows, const Supported ),
1439 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, const Supported ),
1440 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, const Supported ),
1441 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, const Supported ),
1442 ( "warn-missing-fields", Opt_WarnMissingFields, const Supported ),
1443 ( "warn-missing-methods", Opt_WarnMissingMethods, const Supported ),
1444 ( "warn-missing-signatures", Opt_WarnMissingSigs, const Supported ),
1445 ( "warn-name-shadowing", Opt_WarnNameShadowing, const Supported ),
1446 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, const Supported ),
1447 ( "warn-simple-patterns", Opt_WarnSimplePatterns, const Supported ),
1448 ( "warn-type-defaults", Opt_WarnTypeDefaults, const Supported ),
1449 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, const Supported ),
1450 ( "warn-unused-binds", Opt_WarnUnusedBinds, const Supported ),
1451 ( "warn-unused-imports", Opt_WarnUnusedImports, const Supported ),
1452 ( "warn-unused-matches", Opt_WarnUnusedMatches, const Supported ),
1453 ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, const Supported ),
1454 ( "warn-deprecations", Opt_WarnWarningsDeprecations, const Supported ),
1455 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, const Supported ),
1456 ( "warn-orphans", Opt_WarnOrphans, const Supported ),
1457 ( "warn-tabs", Opt_WarnTabs, const Supported ),
1458 ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, const Supported ),
1459 ( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings,
1460 const $ Deprecated "lazy unlifted bindings will be an error in GHC 6.14, and this flag will no longer exist"),
1461 ( "warn-unused-do-bind", Opt_WarnUnusedDoBind, const Supported ),
1462 ( "warn-wrong-do-bind", Opt_WarnWrongDoBind, const Supported ),
1463 ( "print-explicit-foralls", Opt_PrintExplicitForalls, const Supported ),
1464 ( "strictness", Opt_Strictness, const Supported ),
1465 ( "specialise", Opt_Specialise, const Supported ),
1466 ( "float-in", Opt_FloatIn, const Supported ),
1467 ( "static-argument-transformation", Opt_StaticArgumentTransformation, const Supported ),
1468 ( "full-laziness", Opt_FullLaziness, const Supported ),
1469 ( "liberate-case", Opt_LiberateCase, const Supported ),
1470 ( "spec-constr", Opt_SpecConstr, const Supported ),
1471 ( "cse", Opt_CSE, const Supported ),
1472 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, const Supported ),
1473 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, const Supported ),
1474 ( "expose-all-unfoldings", Opt_ExposeAllUnfoldings, const Supported ),
1475 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, const Supported ),
1476 ( "ignore-asserts", Opt_IgnoreAsserts, const Supported ),
1477 ( "do-eta-reduction", Opt_DoEtaReduction, const Supported ),
1478 ( "case-merge", Opt_CaseMerge, const Supported ),
1479 ( "unbox-strict-fields", Opt_UnboxStrictFields, const Supported ),
1480 ( "method-sharing", Opt_MethodSharing, const Supported ),
1481 ( "dicts-cheap", Opt_DictsCheap, const Supported ),
1482 ( "excess-precision", Opt_ExcessPrecision, const Supported ),
1483 ( "eager-blackholing", Opt_EagerBlackHoling, const Supported ),
1484 ( "asm-mangling", Opt_DoAsmMangling, const Supported ),
1485 ( "print-bind-result", Opt_PrintBindResult, const Supported ),
1486 ( "force-recomp", Opt_ForceRecomp, const Supported ),
1487 ( "hpc-no-auto", Opt_Hpc_No_Auto, const Supported ),
1488 ( "rewrite-rules", Opt_EnableRewriteRules, useInstead "enable-rewrite-rules" ),
1489 ( "enable-rewrite-rules", Opt_EnableRewriteRules, const Supported ),
1490 ( "break-on-exception", Opt_BreakOnException, const Supported ),
1491 ( "break-on-error", Opt_BreakOnError, const Supported ),
1492 ( "print-evld-with-show", Opt_PrintEvldWithShow, const Supported ),
1493 ( "print-bind-contents", Opt_PrintBindContents, const Supported ),
1494 ( "run-cps", Opt_RunCPS, const Supported ),
1495 ( "run-cpsz", Opt_RunCPSZ, const Supported ),
1496 ( "new-codegen", Opt_TryNewCodeGen, const Supported ),
1497 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, const Supported ),
1498 ( "vectorise", Opt_Vectorise, const Supported ),
1499 ( "regs-graph", Opt_RegsGraph, const Supported ),
1500 ( "regs-iterative", Opt_RegsIterative, const Supported ),
1501 ( "th", Opt_TemplateHaskell,
1502 deprecatedForLanguage "TemplateHaskell" ),
1503 ( "fi", Opt_ForeignFunctionInterface,
1504 deprecatedForLanguage "ForeignFunctionInterface" ),
1505 ( "ffi", Opt_ForeignFunctionInterface,
1506 deprecatedForLanguage "ForeignFunctionInterface" ),
1507 ( "arrows", Opt_Arrows,
1508 deprecatedForLanguage "Arrows" ),
1509 ( "generics", Opt_Generics,
1510 deprecatedForLanguage "Generics" ),
1511 ( "implicit-prelude", Opt_ImplicitPrelude,
1512 deprecatedForLanguage "ImplicitPrelude" ),
1513 ( "bang-patterns", Opt_BangPatterns,
1514 deprecatedForLanguage "BangPatterns" ),
1515 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1516 deprecatedForLanguage "MonomorphismRestriction" ),
1517 ( "mono-pat-binds", Opt_MonoPatBinds,
1518 deprecatedForLanguage "MonoPatBinds" ),
1519 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1520 deprecatedForLanguage "ExtendedDefaultRules" ),
1521 ( "implicit-params", Opt_ImplicitParams,
1522 deprecatedForLanguage "ImplicitParams" ),
1523 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1524 deprecatedForLanguage "ScopedTypeVariables" ),
1525 ( "parr", Opt_PArr,
1526 deprecatedForLanguage "PArr" ),
1527 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1528 deprecatedForLanguage "OverlappingInstances" ),
1529 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1530 deprecatedForLanguage "UndecidableInstances" ),
1531 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1532 deprecatedForLanguage "IncoherentInstances" ),
1533 ( "gen-manifest", Opt_GenManifest, const Supported ),
1534 ( "embed-manifest", Opt_EmbedManifest, const Supported ),
1535 ( "ext-core", Opt_EmitExternalCore, const Supported ),
1536 ( "shared-implib", Opt_SharedImplib, const Supported ),
1537 ( "building-cabal-package", Opt_BuildingCabalPackage, const Supported ),
1538 ( "implicit-import-qualified", Opt_ImplicitImportQualified, const Supported )
1539 ]
1540
1541 supportedLanguages :: [String]
1542 supportedLanguages = [ name | (name, _, _) <- xFlags ]
1543
1544 -- This may contain duplicates
1545 languageOptions :: [DynFlag]
1546 languageOptions = [ dynFlag | (_, dynFlag, _) <- xFlags ]
1547
1548 -- | These -X<blah> flags can all be reversed with -XNo<blah>
1549 xFlags :: [(String, DynFlag, Bool -> Deprecated)]
1550 xFlags = [
1551 ( "CPP", Opt_Cpp, const Supported ),
1552 ( "PostfixOperators", Opt_PostfixOperators, const Supported ),
1553 ( "TupleSections", Opt_TupleSections, const Supported ),
1554 ( "PatternGuards", Opt_PatternGuards, const Supported ),
1555 ( "UnicodeSyntax", Opt_UnicodeSyntax, const Supported ),
1556 ( "MagicHash", Opt_MagicHash, const Supported ),
1557 ( "PolymorphicComponents", Opt_PolymorphicComponents, const Supported ),
1558 ( "ExistentialQuantification", Opt_ExistentialQuantification, const Supported ),
1559 ( "KindSignatures", Opt_KindSignatures, const Supported ),
1560 ( "EmptyDataDecls", Opt_EmptyDataDecls, const Supported ),
1561 ( "ParallelListComp", Opt_ParallelListComp, const Supported ),
1562 ( "TransformListComp", Opt_TransformListComp, const Supported ),
1563 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, const Supported ),
1564 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, const Supported ),
1565 ( "GHCForeignImportPrim", Opt_GHCForeignImportPrim, const Supported ),
1566 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, const Supported ),
1567 ( "Rank2Types", Opt_Rank2Types, const Supported ),
1568 ( "RankNTypes", Opt_RankNTypes, const Supported ),
1569 ( "ImpredicativeTypes", Opt_ImpredicativeTypes,
1570 const $ Deprecated "impredicative polymorphism will be simplified or removed in GHC 6.14" ),
1571 ( "TypeOperators", Opt_TypeOperators, const Supported ),
1572 ( "RecursiveDo", Opt_RecursiveDo,
1573 deprecatedForLanguage "DoRec"),
1574 ( "DoRec", Opt_DoRec, const Supported ),
1575 ( "Arrows", Opt_Arrows, const Supported ),
1576 ( "PArr", Opt_PArr, const Supported ),
1577 ( "TemplateHaskell", Opt_TemplateHaskell, const Supported ),
1578 ( "QuasiQuotes", Opt_QuasiQuotes, const Supported ),
1579 ( "Generics", Opt_Generics, const Supported ),
1580 -- On by default:
1581 ( "ImplicitPrelude", Opt_ImplicitPrelude, const Supported ),
1582 ( "RecordWildCards", Opt_RecordWildCards, const Supported ),
1583 ( "NamedFieldPuns", Opt_RecordPuns, const Supported ),
1584 ( "RecordPuns", Opt_RecordPuns,
1585 deprecatedForLanguage "NamedFieldPuns" ),
1586 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, const Supported ),
1587 ( "OverloadedStrings", Opt_OverloadedStrings, const Supported ),
1588 ( "GADTs", Opt_GADTs, const Supported ),
1589 ( "ViewPatterns", Opt_ViewPatterns, const Supported ),
1590 ( "TypeFamilies", Opt_TypeFamilies, const Supported ),
1591 ( "BangPatterns", Opt_BangPatterns, const Supported ),
1592 -- On by default:
1593 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, const Supported ),
1594 -- On by default:
1595 ( "NPlusKPatterns", Opt_NPlusKPatterns, const Supported ),
1596 -- On by default (which is not strictly H98):
1597 ( "MonoPatBinds", Opt_MonoPatBinds, const Supported ),
1598 ( "ExplicitForAll", Opt_ExplicitForAll, const Supported ),
1599 ( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, const Supported ),
1600 ( "MonoLocalBinds", Opt_MonoLocalBinds, const Supported ),
1601 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, const Supported ),
1602 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, const Supported ),
1603 ( "ImplicitParams", Opt_ImplicitParams, const Supported ),
1604 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, const Supported ),
1605
1606 ( "PatternSignatures", Opt_ScopedTypeVariables,
1607 deprecatedForLanguage "ScopedTypeVariables" ),
1608
1609 ( "UnboxedTuples", Opt_UnboxedTuples, const Supported ),
1610 ( "StandaloneDeriving", Opt_StandaloneDeriving, const Supported ),
1611 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, const Supported ),
1612 ( "DeriveFunctor", Opt_DeriveFunctor, const Supported ),
1613 ( "DeriveTraversable", Opt_DeriveTraversable, const Supported ),
1614 ( "DeriveFoldable", Opt_DeriveFoldable, const Supported ),
1615 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, const Supported ),
1616 ( "FlexibleContexts", Opt_FlexibleContexts, const Supported ),
1617 ( "FlexibleInstances", Opt_FlexibleInstances, const Supported ),
1618 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, const Supported ),
1619 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, const Supported ),
1620 ( "FunctionalDependencies", Opt_FunctionalDependencies, const Supported ),
1621 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, const Supported ),
1622 ( "OverlappingInstances", Opt_OverlappingInstances, const Supported ),
1623 ( "UndecidableInstances", Opt_UndecidableInstances, const Supported ),
1624 ( "IncoherentInstances", Opt_IncoherentInstances, const Supported ),
1625 ( "PackageImports", Opt_PackageImports, const Supported ),
1626 ( "NewQualifiedOperators", Opt_NewQualifiedOperators, const Supported )
1627 ]
1628
1629 impliedFlags :: [(DynFlag, DynFlag)]
1630 impliedFlags
1631 = [ (Opt_RankNTypes, Opt_ExplicitForAll)
1632 , (Opt_Rank2Types, Opt_ExplicitForAll)
1633 , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
1634 , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
1635 , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
1636 , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
1637
1638 , (Opt_GADTs, Opt_RelaxedPolyRec) -- We want type-sig variables to
1639 -- be completely rigid for GADTs
1640
1641 , (Opt_TypeFamilies, Opt_RelaxedPolyRec) -- Trac #2944 gives a nice example
1642 , (Opt_TypeFamilies, Opt_KindSignatures) -- Type families use kind signatures
1643 -- all over the place
1644
1645 , (Opt_ScopedTypeVariables, Opt_RelaxedPolyRec) -- Ditto for scoped type variables; see
1646 -- Note [Scoped tyvars] in TcBinds
1647 , (Opt_ImpredicativeTypes, Opt_RankNTypes)
1648
1649 -- Record wild-cards implies field disambiguation
1650 -- Otherwise if you write (C {..}) you may well get
1651 -- stuff like " 'a' not in scope ", which is a bit silly
1652 -- if the compiler has just filled in field 'a' of constructor 'C'
1653 , (Opt_RecordWildCards, Opt_DisambiguateRecordFields)
1654 ]
1655
1656 glasgowExtsFlags :: [DynFlag]
1657 glasgowExtsFlags = [
1658 Opt_PrintExplicitForalls
1659 , Opt_ForeignFunctionInterface
1660 , Opt_UnliftedFFITypes
1661 , Opt_GADTs
1662 , Opt_ImplicitParams
1663 , Opt_ScopedTypeVariables
1664 , Opt_UnboxedTuples
1665 , Opt_TypeSynonymInstances
1666 , Opt_StandaloneDeriving
1667 , Opt_DeriveDataTypeable
1668 , Opt_DeriveFunctor
1669 , Opt_DeriveFoldable
1670 , Opt_DeriveTraversable
1671 , Opt_FlexibleContexts
1672 , Opt_FlexibleInstances
1673 , Opt_ConstrainedClassMethods
1674 , Opt_MultiParamTypeClasses
1675 , Opt_FunctionalDependencies
1676 , Opt_MagicHash
1677 , Opt_PolymorphicComponents
1678 , Opt_ExistentialQuantification
1679 , Opt_UnicodeSyntax
1680 , Opt_PostfixOperators
1681 , Opt_PatternGuards
1682 , Opt_LiberalTypeSynonyms
1683 , Opt_RankNTypes
1684 , Opt_TypeOperators
1685 , Opt_DoRec
1686 , Opt_ParallelListComp
1687 , Opt_EmptyDataDecls
1688 , Opt_KindSignatures
1689 , Opt_GeneralizedNewtypeDeriving
1690 , Opt_TypeFamilies ]
1691
1692 -- -----------------------------------------------------------------------------
1693 -- Parsing the dynamic flags.
1694
1695 -- | Parse dynamic flags from a list of command line arguments. Returns the
1696 -- the parsed 'DynFlags', the left-over arguments, and a list of warnings.
1697 -- Throws a 'UsageError' if errors occurred during parsing (such as unknown
1698 -- flags or missing arguments).
1699 parseDynamicFlags :: Monad m =>
1700 DynFlags -> [Located String]
1701 -> m (DynFlags, [Located String], [Located String])
1702 -- ^ Updated 'DynFlags', left-over arguments, and
1703 -- list of warnings.
1704 parseDynamicFlags dflags args = parseDynamicFlags_ dflags args True
1705
1706 -- | Like 'parseDynamicFlags' but does not allow the package flags (-package,
1707 -- -hide-package, -ignore-package, -hide-all-packages, -package-conf).
1708 parseDynamicNoPackageFlags :: Monad m =>
1709 DynFlags -> [Located String]
1710 -> m (DynFlags, [Located String], [Located String])
1711 -- ^ Updated 'DynFlags', left-over arguments, and
1712 -- list of warnings.
1713 parseDynamicNoPackageFlags dflags args = parseDynamicFlags_ dflags args False
1714
1715 parseDynamicFlags_ :: Monad m =>
1716 DynFlags -> [Located String] -> Bool
1717 -> m (DynFlags, [Located String], [Located String])
1718 parseDynamicFlags_ dflags0 args pkg_flags = do
1719 -- XXX Legacy support code
1720 -- We used to accept things like
1721 -- optdep-f -optdepdepend
1722 -- optdep-f -optdep depend
1723 -- optdep -f -optdepdepend
1724 -- optdep -f -optdep depend
1725 -- but the spaces trip up proper argument handling. So get rid of them.
1726 let f (L p "-optdep" : L _ x : xs) = (L p ("-optdep" ++ x)) : f xs
1727 f (x : xs) = x : f xs
1728 f xs = xs
1729 args' = f args
1730
1731 -- Note: -ignore-package (package_flags) must precede -i* (dynamic_flags)
1732 flag_spec | pkg_flags = package_flags ++ dynamic_flags
1733 | otherwise = dynamic_flags
1734
1735 let ((leftover, errs, warns), dflags1)
1736 = runCmdLine (processArgs flag_spec args') dflags0
1737 when (not (null errs)) $ ghcError $ errorsToGhcException errs
1738
1739 -- Cannot use -fPIC with registerised -fvia-C, because the mangler
1740 -- isn't up to the job. We know that if hscTarget == HscC, then the
1741 -- user has explicitly used -fvia-C, because -fasm is the default,
1742 -- unless there is no NCG on this platform. The latter case is
1743 -- checked when the -fPIC flag is parsed.
1744 --
1745 let (pic_warns, dflags2) =
1746 if opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
1747 then ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
1748 dflags1{ hscTarget = HscAsm })
1749 else ([], dflags1)
1750
1751 return (dflags2, leftover, pic_warns ++ warns)
1752
1753 type DynP = CmdLineP DynFlags
1754
1755 upd :: (DynFlags -> DynFlags) -> DynP ()
1756 upd f = do
1757 dfs <- getCmdLineState
1758 putCmdLineState $! (f dfs)
1759
1760 --------------------------
1761 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1762 setDynFlag f = do { upd (\dfs -> dopt_set dfs f)
1763 ; mapM_ setDynFlag deps }
1764 where
1765 deps = [ d | (f', d) <- impliedFlags, f' == f ]
1766 -- When you set f, set the ones it implies
1767 -- NB: use setDynFlag recursively, in case the implied flags
1768 -- implies further flags
1769 -- When you un-set f, however, we don't un-set the things it implies
1770 -- (except for -fno-glasgow-exts, which is treated specially)
1771
1772 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1773
1774 --------------------------
1775 setDumpFlag :: DynFlag -> OptKind DynP
1776 setDumpFlag dump_flag
1777 = NoArg (do { setDynFlag dump_flag
1778 ; when want_recomp forceRecompile })
1779 where
1780 -- Certain dumpy-things are really interested in what's going
1781 -- on during recompilation checking, so in those cases we
1782 -- don't want to turn it off.
1783 want_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1784 Opt_D_dump_hi_diffs]
1785
1786 forceRecompile :: DynP ()
1787 -- Whenver we -ddump, force recompilation (by switching off the
1788 -- recompilation checker), else you don't see the dump! However,
1789 -- don't switch it off in --make mode, else *everything* gets
1790 -- recompiled which probably isn't what you want
1791 forceRecompile = do { dfs <- getCmdLineState
1792 ; when (force_recomp dfs) (setDynFlag Opt_ForceRecomp) }
1793 where
1794 force_recomp dfs = isOneShot (ghcMode dfs)
1795
1796 setVerboseCore2Core :: DynP ()
1797 setVerboseCore2Core = do forceRecompile
1798 setDynFlag Opt_D_verbose_core2core
1799 upd (\dfs -> dfs { shouldDumpSimplPhase = Nothing })
1800
1801
1802 setDumpSimplPhases :: String -> DynP ()
1803 setDumpSimplPhases s = do forceRecompile
1804 upd (\dfs -> dfs { shouldDumpSimplPhase = Just spec })
1805 where
1806 spec = case s of { ('=' : s') -> s'; _ -> s }
1807
1808 setVerbosity :: Maybe Int -> DynP ()
1809 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1810
1811 addCmdlineHCInclude :: String -> DynP ()
1812 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1813
1814 extraPkgConf_ :: FilePath -> DynP ()
1815 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1816
1817 exposePackage, exposePackageId, hidePackage, ignorePackage :: String -> DynP ()
1818 exposePackage p =
1819 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1820 exposePackageId p =
1821 upd (\s -> s{ packageFlags = ExposePackageId p : packageFlags s })
1822 hidePackage p =
1823 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1824 ignorePackage p =
1825 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1826
1827 setPackageName :: String -> DynFlags -> DynFlags
1828 setPackageName p s = s{ thisPackage = stringToPackageId p }
1829
1830 -- If we're linking a binary, then only targets that produce object
1831 -- code are allowed (requests for other target types are ignored).
1832 setTarget :: HscTarget -> DynP ()
1833 setTarget l = upd set
1834 where
1835 set dfs
1836 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1837 | otherwise = dfs
1838
1839 -- Changes the target only if we're compiling object code. This is
1840 -- used by -fasm and -fvia-C, which switch from one to the other, but
1841 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1842 -- can be safely used in an OPTIONS_GHC pragma.
1843 setObjTarget :: HscTarget -> DynP ()
1844 setObjTarget l = upd set
1845 where
1846 set dfs
1847 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1848 | otherwise = dfs
1849
1850 setOptLevel :: Int -> DynFlags -> DynFlags
1851 setOptLevel n dflags
1852 | hscTarget dflags == HscInterpreted && n > 0
1853 = dflags
1854 -- not in IO any more, oh well:
1855 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1856 | otherwise
1857 = updOptLevel n dflags
1858
1859
1860 -- -Odph is equivalent to
1861 --
1862 -- -O2 optimise as much as possible
1863 -- -fno-method-sharing sharing specialisation defeats fusion
1864 -- sometimes
1865 -- -fdicts-cheap always inline dictionaries
1866 -- -fmax-simplifier-iterations20 this is necessary sometimes
1867 -- -fsimplifier-phases=3 we use an additional simplifier phase
1868 -- for fusion
1869 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1870 -- -fno-spec-constr-count SpecConstr as much as possible
1871 -- -finline-enough-args hack to prevent excessive inlining
1872 --
1873 setDPHOpt :: DynFlags -> DynFlags
1874 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1875 , simplPhases = 3
1876 , specConstrThreshold = Nothing
1877 , specConstrCount = Nothing
1878 })
1879 `dopt_set` Opt_DictsCheap
1880 `dopt_unset` Opt_MethodSharing
1881
1882 data DPHBackend = DPHPar
1883 | DPHSeq
1884 | DPHThis
1885 deriving(Eq, Ord, Enum, Show)
1886
1887 setDPHBackend :: DPHBackend -> DynP ()
1888 setDPHBackend backend
1889 = do
1890 upd $ \dflags -> dflags { dphBackend = backend }
1891 mapM_ exposePackage (dph_packages backend)
1892 where
1893 dph_packages DPHThis = []
1894 dph_packages DPHPar = ["dph-prim-par", "dph-par"]
1895 dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
1896
1897 dphPackage :: DynFlags -> PackageId
1898 dphPackage dflags = case dphBackend dflags of
1899 DPHPar -> dphParPackageId
1900 DPHSeq -> dphSeqPackageId
1901 DPHThis -> thisPackage dflags
1902
1903 setMainIs :: String -> DynP ()
1904 setMainIs arg
1905 | not (null main_fn) && isLower (head main_fn)
1906 -- The arg looked like "Foo.Bar.baz"
1907 = upd $ \d -> d{ mainFunIs = Just main_fn,
1908 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
1909
1910 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
1911 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
1912
1913 | otherwise -- The arg looked like "baz"
1914 = upd $ \d -> d{ mainFunIs = Just arg }
1915 where
1916 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
1917
1918 -----------------------------------------------------------------------------
1919 -- Paths & Libraries
1920
1921 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
1922
1923 -- -i on its own deletes the import paths
1924 addImportPath "" = upd (\s -> s{importPaths = []})
1925 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
1926
1927
1928 addLibraryPath p =
1929 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
1930
1931 addIncludePath p =
1932 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
1933
1934 addFrameworkPath p =
1935 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
1936
1937 #ifndef mingw32_TARGET_OS
1938 split_marker :: Char
1939 split_marker = ':' -- not configurable (ToDo)
1940 #endif
1941
1942 splitPathList :: String -> [String]
1943 splitPathList s = filter notNull (splitUp s)
1944 -- empty paths are ignored: there might be a trailing
1945 -- ':' in the initial list, for example. Empty paths can
1946 -- cause confusion when they are translated into -I options
1947 -- for passing to gcc.
1948 where
1949 #ifndef mingw32_TARGET_OS
1950 splitUp xs = split split_marker xs
1951 #else
1952 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
1953 --
1954 -- That is, if "foo:bar:baz" is used, this interpreted as
1955 -- consisting of three entries, 'foo', 'bar', 'baz'.
1956 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
1957 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
1958 --
1959 -- Notice that no attempt is made to fully replace the 'standard'
1960 -- split marker ':' with the Windows / DOS one, ';'. The reason being
1961 -- that this will cause too much breakage for users & ':' will
1962 -- work fine even with DOS paths, if you're not insisting on being silly.
1963 -- So, use either.
1964 splitUp [] = []
1965 splitUp (x:':':div:xs) | div `elem` dir_markers
1966 = ((x:':':div:p): splitUp rs)
1967 where
1968 (p,rs) = findNextPath xs
1969 -- we used to check for existence of the path here, but that
1970 -- required the IO monad to be threaded through the command-line
1971 -- parser which is quite inconvenient. The
1972 splitUp xs = cons p (splitUp rs)
1973 where
1974 (p,rs) = findNextPath xs
1975
1976 cons "" xs = xs
1977 cons x xs = x:xs
1978
1979 -- will be called either when we've consumed nought or the
1980 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
1981 -- finding the next split marker.
1982 findNextPath xs =
1983 case break (`elem` split_markers) xs of
1984 (p, _:ds) -> (p, ds)
1985 (p, xs) -> (p, xs)
1986
1987 split_markers :: [Char]
1988 split_markers = [':', ';']
1989
1990 dir_markers :: [Char]
1991 dir_markers = ['/', '\\']
1992 #endif
1993
1994 -- -----------------------------------------------------------------------------
1995 -- tmpDir, where we store temporary files.
1996
1997 setTmpDir :: FilePath -> DynFlags -> DynFlags
1998 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
1999 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
2000 -- seem necessary now --SDM 7/2/2008
2001
2002 -----------------------------------------------------------------------------
2003 -- Hpc stuff
2004
2005 setOptHpcDir :: String -> DynP ()
2006 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
2007
2008 -----------------------------------------------------------------------------
2009 -- Via-C compilation stuff
2010
2011 -- There are some options that we need to pass to gcc when compiling
2012 -- Haskell code via C, but are only supported by recent versions of
2013 -- gcc. The configure script decides which of these options we need,
2014 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
2015 -- read before each via-C compilation. The advantage of having these
2016 -- in a separate file is that the file can be created at install-time
2017 -- depending on the available gcc version, and even re-generated later
2018 -- if gcc is upgraded.
2019 --
2020 -- The options below are not dependent on the version of gcc, only the
2021 -- platform.
2022
2023 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
2024 [String]) -- for registerised HC compilations
2025 machdepCCOpts _dflags
2026 #if alpha_TARGET_ARCH
2027 = ( ["-w", "-mieee"
2028 #ifdef HAVE_THREADED_RTS_SUPPORT
2029 , "-D_REENTRANT"
2030 #endif
2031 ], [] )
2032 -- For now, to suppress the gcc warning "call-clobbered
2033 -- register used for global register variable", we simply
2034 -- disable all warnings altogether using the -w flag. Oh well.
2035
2036 #elif hppa_TARGET_ARCH
2037 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
2038 -- (very nice, but too bad the HP /usr/include files don't agree.)
2039 = ( ["-D_HPUX_SOURCE"], [] )
2040
2041 #elif m68k_TARGET_ARCH
2042 -- -fno-defer-pop : for the .hc files, we want all the pushing/
2043 -- popping of args to routines to be explicit; if we let things
2044 -- be deferred 'til after an STGJUMP, imminent death is certain!
2045 --
2046 -- -fomit-frame-pointer : *don't*
2047 -- It's better to have a6 completely tied up being a frame pointer
2048 -- rather than let GCC pick random things to do with it.
2049 -- (If we want to steal a6, then we would try to do things
2050 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
2051 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
2052
2053 #elif i386_TARGET_ARCH
2054 -- -fno-defer-pop : basically the same game as for m68k
2055 --
2056 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
2057 -- the fp (%ebp) for our register maps.
2058 = let n_regs = stolen_x86_regs _dflags
2059 in
2060 (
2061 #if darwin_TARGET_OS
2062 -- By default, gcc on OS X will generate SSE
2063 -- instructions, which need things 16-byte aligned,
2064 -- but we don't 16-byte align things. Thus drop
2065 -- back to generic i686 compatibility. Trac #2983.
2066 --
2067 -- Since Snow Leopard (10.6), gcc defaults to x86_64.
2068 ["-march=i686", "-m32"],
2069 #else
2070 [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
2071 ],
2072 #endif
2073 [ "-fno-defer-pop",
2074 "-fomit-frame-pointer",
2075 -- we want -fno-builtin, because when gcc inlines
2076 -- built-in functions like memcpy() it tends to
2077 -- run out of registers, requiring -monly-n-regs
2078 "-fno-builtin",
2079 "-DSTOLEN_X86_REGS="++show n_regs ]
2080 )
2081
2082 #elif ia64_TARGET_ARCH
2083 = ( [], ["-fomit-frame-pointer", "-G0"] )
2084
2085 #elif x86_64_TARGET_ARCH
2086 = (
2087 #if darwin_TARGET_OS
2088 ["-m64"],
2089 #else
2090 [],
2091 #endif
2092 ["-fomit-frame-pointer",
2093 "-fno-asynchronous-unwind-tables",
2094 -- the unwind tables are unnecessary for HC code,
2095 -- and get in the way of -split-objs. Another option
2096 -- would be to throw them away in the mangler, but this
2097 -- is easier.
2098 "-fno-builtin"
2099 -- calling builtins like strlen() using the FFI can
2100 -- cause gcc to run out of regs, so use the external
2101 -- version.
2102 ] )
2103
2104 #elif sparc_TARGET_ARCH
2105 = ( [], ["-w"] )
2106 -- For now, to suppress the gcc warning "call-clobbered
2107 -- register used for global register variable", we simply
2108 -- disable all warnings altogether using the -w flag. Oh well.
2109
2110 #elif powerpc_apple_darwin_TARGET
2111 -- -no-cpp-precomp:
2112 -- Disable Apple's precompiling preprocessor. It's a great thing
2113 -- for "normal" programs, but it doesn't support register variable
2114 -- declarations.
2115 = ( [], ["-no-cpp-precomp"] )
2116 #else
2117 = ( [], [] )
2118 #endif
2119
2120 picCCOpts :: DynFlags -> [String]
2121 picCCOpts _dflags
2122 #if darwin_TARGET_OS
2123 -- Apple prefers to do things the other way round.
2124 -- PIC is on by default.
2125 -- -mdynamic-no-pic:
2126 -- Turn off PIC code generation.
2127 -- -fno-common:
2128 -- Don't generate "common" symbols - these are unwanted
2129 -- in dynamic libraries.
2130
2131 | opt_PIC
2132 = ["-fno-common", "-U __PIC__","-D__PIC__"]
2133 | otherwise
2134 = ["-mdynamic-no-pic"]
2135 #elif mingw32_TARGET_OS
2136 -- no -fPIC for Windows
2137 | opt_PIC
2138 = ["-U __PIC__","-D__PIC__"]
2139 | otherwise
2140 = []
2141 #else
2142 | opt_PIC || not opt_Static
2143 = ["-fPIC", "-U __PIC__", "-D__PIC__"]
2144 | otherwise
2145 = []
2146 #endif
2147
2148 -- -----------------------------------------------------------------------------
2149 -- Splitting
2150
2151 can_split :: Bool
2152 can_split = cSplitObjs == "YES"
2153
2154 -- -----------------------------------------------------------------------------
2155 -- Compiler Info
2156
2157 data Printable = String String
2158 | FromDynFlags (DynFlags -> String)
2159
2160 compilerInfo :: [(String, Printable)]
2161 compilerInfo = [("Project name", String cProjectName),
2162 ("Project version", String cProjectVersion),
2163 ("Booter version", String cBooterVersion),
2164 ("Stage", String cStage),
2165 ("Have interpreter", String cGhcWithInterpreter),
2166 ("Object splitting", String cSplitObjs),
2167 ("Have native code generator", String cGhcWithNativeCodeGen),
2168 ("Support SMP", String cGhcWithSMP),
2169 ("Unregisterised", String cGhcUnregisterised),
2170 ("Tables next to code", String cGhcEnableTablesNextToCode),
2171 ("Win32 DLLs", String cEnableWin32DLLs),
2172 ("RTS ways", String cGhcRTSWays),
2173 ("Leading underscore", String cLeadingUnderscore),
2174 ("Debug on", String (show debugIsOn)),
2175 ("LibDir", FromDynFlags topDir)
2176 ]
2177