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Diffstat (limited to 'compiler/main/DynFlags.hs')
| -rw-r--r-- | compiler/main/DynFlags.hs | 1344 |
1 files changed, 1344 insertions, 0 deletions
diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs new file mode 100644 index 0000000000..78acb98375 --- /dev/null +++ b/compiler/main/DynFlags.hs @@ -0,0 +1,1344 @@ +----------------------------------------------------------------------------- +-- +-- Dynamic flags +-- +-- Most flags are dynamic flags, which means they can change from +-- compilation to compilation using OPTIONS_GHC pragmas, and in a +-- multi-session GHC each session can be using different dynamic +-- flags. Dynamic flags can also be set at the prompt in GHCi. +-- +-- (c) The University of Glasgow 2005 +-- +----------------------------------------------------------------------------- + +module DynFlags ( + -- Dynamic flags + DynFlag(..), + DynFlags(..), + HscTarget(..), + GhcMode(..), isOneShot, + GhcLink(..), isNoLink, + PackageFlag(..), + Option(..), + + -- Configuration of the core-to-core and stg-to-stg phases + CoreToDo(..), + StgToDo(..), + SimplifierSwitch(..), + SimplifierMode(..), FloatOutSwitches(..), + getCoreToDo, getStgToDo, + + -- Manipulating DynFlags + defaultDynFlags, -- DynFlags + initDynFlags, -- DynFlags -> IO DynFlags + + dopt, -- DynFlag -> DynFlags -> Bool + dopt_set, dopt_unset, -- DynFlags -> DynFlag -> DynFlags + getOpts, -- (DynFlags -> [a]) -> IO [a] + getVerbFlag, + updOptLevel, + setTmpDir, + + -- parsing DynFlags + parseDynamicFlags, + allFlags, + + -- misc stuff + machdepCCOpts, picCCOpts, + ) where + +#include "HsVersions.h" + +import Module ( Module, mkModule ) +import PrelNames ( mAIN ) +import StaticFlags ( opt_Static, opt_PIC, + WayName(..), v_Ways, v_Build_tag, v_RTS_Build_tag ) +import {-# SOURCE #-} Packages (PackageState) +import DriverPhases ( Phase(..), phaseInputExt ) +import Config +import CmdLineParser +import Panic ( panic, GhcException(..) ) +import Util ( notNull, splitLongestPrefix, split, normalisePath ) +import SrcLoc ( SrcSpan ) + +import DATA_IOREF ( readIORef ) +import EXCEPTION ( throwDyn ) +import Monad ( when ) +#ifdef mingw32_TARGET_OS +import Data.List ( isPrefixOf ) +#endif +import Maybe ( fromJust ) +import Char ( isDigit, isUpper ) +import Outputable +import System.IO ( hPutStrLn, stderr ) +import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage ) + +-- ----------------------------------------------------------------------------- +-- DynFlags + +data DynFlag + + -- debugging flags + = Opt_D_dump_cmm + | Opt_D_dump_asm + | Opt_D_dump_cpranal + | Opt_D_dump_deriv + | Opt_D_dump_ds + | Opt_D_dump_flatC + | Opt_D_dump_foreign + | Opt_D_dump_inlinings + | Opt_D_dump_occur_anal + | Opt_D_dump_parsed + | Opt_D_dump_rn + | Opt_D_dump_simpl + | Opt_D_dump_simpl_iterations + | Opt_D_dump_spec + | Opt_D_dump_prep + | Opt_D_dump_stg + | Opt_D_dump_stranal + | Opt_D_dump_tc + | Opt_D_dump_types + | Opt_D_dump_rules + | Opt_D_dump_cse + | Opt_D_dump_worker_wrapper + | Opt_D_dump_rn_trace + | Opt_D_dump_rn_stats + | Opt_D_dump_opt_cmm + | Opt_D_dump_simpl_stats + | Opt_D_dump_tc_trace + | Opt_D_dump_if_trace + | Opt_D_dump_splices + | Opt_D_dump_BCOs + | Opt_D_dump_vect + | Opt_D_source_stats + | Opt_D_verbose_core2core + | Opt_D_verbose_stg2stg + | Opt_D_dump_hi + | Opt_D_dump_hi_diffs + | Opt_D_dump_minimal_imports + | Opt_D_faststring_stats + | Opt_DoCoreLinting + | Opt_DoStgLinting + | Opt_DoCmmLinting + + | Opt_WarnIsError -- -Werror; makes warnings fatal + | Opt_WarnDuplicateExports + | Opt_WarnHiShadows + | Opt_WarnIncompletePatterns + | Opt_WarnIncompletePatternsRecUpd + | Opt_WarnMissingFields + | Opt_WarnMissingMethods + | Opt_WarnMissingSigs + | Opt_WarnNameShadowing + | Opt_WarnOverlappingPatterns + | Opt_WarnSimplePatterns + | Opt_WarnTypeDefaults + | Opt_WarnUnusedBinds + | Opt_WarnUnusedImports + | Opt_WarnUnusedMatches + | Opt_WarnDeprecations + | Opt_WarnDodgyImports + | Opt_WarnOrphans + + -- language opts + | Opt_AllowOverlappingInstances + | Opt_AllowUndecidableInstances + | Opt_AllowIncoherentInstances + | Opt_MonomorphismRestriction + | Opt_GlasgowExts + | Opt_FFI + | Opt_PArr -- syntactic support for parallel arrays + | Opt_Arrows -- Arrow-notation syntax + | Opt_TH + | Opt_ImplicitParams + | Opt_Generics + | Opt_ImplicitPrelude + | Opt_ScopedTypeVariables + | Opt_BangPatterns + + -- optimisation opts + | Opt_Strictness + | Opt_FullLaziness + | Opt_CSE + | Opt_IgnoreInterfacePragmas + | Opt_OmitInterfacePragmas + | Opt_DoLambdaEtaExpansion + | Opt_IgnoreAsserts + | Opt_IgnoreBreakpoints + | Opt_DoEtaReduction + | Opt_CaseMerge + | Opt_UnboxStrictFields + + -- misc opts + | Opt_Cpp + | Opt_Pp + | Opt_RecompChecking + | Opt_DryRun + | Opt_DoAsmMangling + | Opt_ExcessPrecision + | Opt_ReadUserPackageConf + | Opt_NoHsMain + | Opt_SplitObjs + | Opt_StgStats + | Opt_HideAllPackages + + -- keeping stuff + | Opt_KeepHiDiffs + | Opt_KeepHcFiles + | Opt_KeepSFiles + | Opt_KeepRawSFiles + | Opt_KeepTmpFiles + + deriving (Eq) + +data DynFlags = DynFlags { + ghcMode :: GhcMode, + ghcLink :: GhcLink, + coreToDo :: Maybe [CoreToDo], -- reserved for -Ofile + stgToDo :: Maybe [StgToDo], -- similarly + hscTarget :: HscTarget, + hscOutName :: String, -- name of the output file + extCoreName :: String, -- name of the .core output file + verbosity :: Int, -- verbosity level + optLevel :: Int, -- optimisation level + maxSimplIterations :: Int, -- max simplifier iterations + ruleCheck :: Maybe String, + stolen_x86_regs :: Int, + cmdlineHcIncludes :: [String], -- -#includes + importPaths :: [FilePath], + mainModIs :: Module, + mainFunIs :: Maybe String, + + -- ways + wayNames :: [WayName], -- way flags from the cmd line + buildTag :: String, -- the global "way" (eg. "p" for prof) + rtsBuildTag :: String, -- the RTS "way" + + -- paths etc. + objectDir :: Maybe String, + hiDir :: Maybe String, + stubDir :: Maybe String, + + objectSuf :: String, + hcSuf :: String, + hiSuf :: String, + + outputFile :: Maybe String, + outputHi :: Maybe String, + + includePaths :: [String], + libraryPaths :: [String], + frameworkPaths :: [String], -- used on darwin only + cmdlineFrameworks :: [String], -- ditto + tmpDir :: String, -- no trailing '/' + + -- options for particular phases + opt_L :: [String], + opt_P :: [String], + opt_F :: [String], + opt_c :: [String], + opt_m :: [String], + opt_a :: [String], + opt_l :: [String], + opt_dll :: [String], + opt_dep :: [String], + + -- commands for particular phases + pgm_L :: String, + pgm_P :: (String,[Option]), + pgm_F :: String, + pgm_c :: (String,[Option]), + pgm_m :: (String,[Option]), + pgm_s :: (String,[Option]), + pgm_a :: (String,[Option]), + pgm_l :: (String,[Option]), + pgm_dll :: (String,[Option]), + + -- ** Package flags + extraPkgConfs :: [FilePath], + -- The -package-conf flags given on the command line, in the order + -- they appeared. + + packageFlags :: [PackageFlag], + -- The -package and -hide-package flags from the command-line + + -- ** Package state + pkgState :: PackageState, + + -- hsc dynamic flags + flags :: [DynFlag], + + -- message output + log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO () + } + +data HscTarget + = HscC + | HscAsm + | HscJava + | HscILX + | HscInterpreted + | HscNothing + deriving (Eq, Show) + +data GhcMode + = BatchCompile -- | @ghc --make Main@ + | Interactive -- | @ghc --interactive@ + | OneShot -- | @ghc -c Foo.hs@ + | JustTypecheck -- | Development environemnts, refactorer, etc. + | MkDepend + deriving Eq + +isOneShot :: GhcMode -> Bool +isOneShot OneShot = True +isOneShot _other = False + +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 + +isNoLink :: GhcLink -> Bool +isNoLink NoLink = True +isNoLink other = False + +data PackageFlag + = ExposePackage String + | HidePackage String + | IgnorePackage String + +defaultHscTarget + | cGhcWithNativeCodeGen == "YES" = HscAsm + | otherwise = HscC + +initDynFlags dflags = do + -- someday these will be dynamic flags + ways <- readIORef v_Ways + build_tag <- readIORef v_Build_tag + rts_build_tag <- readIORef v_RTS_Build_tag + return dflags{ + wayNames = ways, + buildTag = build_tag, + rtsBuildTag = rts_build_tag + } + +defaultDynFlags = + DynFlags { + ghcMode = OneShot, + ghcLink = StaticLink, + coreToDo = Nothing, + stgToDo = Nothing, + hscTarget = defaultHscTarget, + hscOutName = "", + extCoreName = "", + verbosity = 0, + optLevel = 0, + maxSimplIterations = 4, + ruleCheck = Nothing, + stolen_x86_regs = 4, + cmdlineHcIncludes = [], + importPaths = ["."], + mainModIs = mAIN, + mainFunIs = Nothing, + + wayNames = panic "ways", + buildTag = panic "buildTag", + rtsBuildTag = panic "rtsBuildTag", + + objectDir = Nothing, + hiDir = Nothing, + stubDir = Nothing, + + objectSuf = phaseInputExt StopLn, + hcSuf = phaseInputExt HCc, + hiSuf = "hi", + + outputFile = Nothing, + outputHi = Nothing, + includePaths = [], + libraryPaths = [], + frameworkPaths = [], + cmdlineFrameworks = [], + tmpDir = cDEFAULT_TMPDIR, + + opt_L = [], + opt_P = [], + opt_F = [], + opt_c = [], + opt_a = [], + opt_m = [], + opt_l = [], + opt_dll = [], + opt_dep = [], + + pgm_L = panic "pgm_L", + pgm_P = panic "pgm_P", + pgm_F = panic "pgm_F", + pgm_c = panic "pgm_c", + pgm_m = panic "pgm_m", + pgm_s = panic "pgm_s", + pgm_a = panic "pgm_a", + pgm_l = panic "pgm_l", + pgm_dll = panic "pgm_mkdll", + + extraPkgConfs = [], + packageFlags = [], + pkgState = panic "pkgState", + + flags = [ + Opt_RecompChecking, + Opt_ReadUserPackageConf, + + Opt_ImplicitPrelude, + Opt_MonomorphismRestriction, + Opt_Strictness, + -- strictness is on by default, but this only + -- applies to -O. + Opt_CSE, -- similarly for CSE. + Opt_FullLaziness, -- ...and for full laziness + + Opt_DoLambdaEtaExpansion, + -- This one is important for a tiresome reason: + -- we want to make sure that the bindings for data + -- constructors are eta-expanded. This is probably + -- a good thing anyway, but it seems fragile. + + Opt_DoAsmMangling, + + -- and the default no-optimisation options: + Opt_IgnoreInterfacePragmas, + Opt_OmitInterfacePragmas + + ] ++ standardWarnings, + + log_action = \severity srcSpan style msg -> + case severity of + SevInfo -> hPutStrLn stderr (show (msg style)) + SevFatal -> hPutStrLn stderr (show (msg style)) + _ -> hPutStrLn stderr ('\n':show ((mkLocMessage srcSpan msg) style)) + } + +{- + Verbosity levels: + + 0 | print errors & warnings only + 1 | minimal verbosity: print "compiling M ... done." for each module. + 2 | equivalent to -dshow-passes + 3 | equivalent to existing "ghc -v" + 4 | "ghc -v -ddump-most" + 5 | "ghc -v -ddump-all" +-} + +dopt :: DynFlag -> DynFlags -> Bool +dopt f dflags = f `elem` (flags dflags) + +dopt_set :: DynFlags -> DynFlag -> DynFlags +dopt_set dfs f = dfs{ flags = f : flags dfs } + +dopt_unset :: DynFlags -> DynFlag -> DynFlags +dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) } + +getOpts :: DynFlags -> (DynFlags -> [a]) -> [a] +getOpts dflags opts = reverse (opts dflags) + -- We add to the options from the front, so we need to reverse the list + +getVerbFlag :: DynFlags -> String +getVerbFlag dflags + | verbosity dflags >= 3 = "-v" + | otherwise = "" + +setObjectDir f d = d{ objectDir = f} +setHiDir f d = d{ hiDir = f} +setStubDir f d = d{ stubDir = f} + +setObjectSuf f d = d{ objectSuf = f} +setHiSuf f d = d{ hiSuf = f} +setHcSuf f d = d{ hcSuf = f} + +setOutputFile f d = d{ outputFile = f} +setOutputHi f d = d{ outputHi = f} + +-- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"] +-- Config.hs should really use Option. +setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)} + +setPgmL f d = d{ pgm_L = f} +setPgmF f d = d{ pgm_F = f} +setPgmc f d = d{ pgm_c = (f,[])} +setPgmm f d = d{ pgm_m = (f,[])} +setPgms f d = d{ pgm_s = (f,[])} +setPgma f d = d{ pgm_a = (f,[])} +setPgml f d = d{ pgm_l = (f,[])} +setPgmdll f d = d{ pgm_dll = (f,[])} + +addOptL f d = d{ opt_L = f : opt_L d} +addOptP f d = d{ opt_P = f : opt_P d} +addOptF f d = d{ opt_F = f : opt_F d} +addOptc f d = d{ opt_c = f : opt_c d} +addOptm f d = d{ opt_m = f : opt_m d} +addOpta f d = d{ opt_a = f : opt_a d} +addOptl f d = d{ opt_l = f : opt_l d} +addOptdll f d = d{ opt_dll = f : opt_dll d} +addOptdep f d = d{ opt_dep = f : opt_dep d} + +addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d} + +-- ----------------------------------------------------------------------------- +-- Command-line options + +-- When invoking external tools as part of the compilation pipeline, we +-- pass these a sequence of options on the command-line. Rather than +-- just using a list of Strings, we use a type that allows us to distinguish +-- between filepaths and 'other stuff'. [The reason being, of course, that +-- this type gives us a handle on transforming filenames, and filenames only, +-- to whatever format they're expected to be on a particular platform.] + +data Option + = FileOption -- an entry that _contains_ filename(s) / filepaths. + String -- a non-filepath prefix that shouldn't be + -- transformed (e.g., "/out=") + String -- the filepath/filename portion + | Option String + +----------------------------------------------------------------------------- +-- Setting the optimisation level + +updOptLevel :: Int -> DynFlags -> DynFlags +-- Set dynflags appropriate to the optimisation level +updOptLevel n dfs + = if (n >= 1) + then dfs2{ hscTarget = HscC, optLevel = n } -- turn on -fvia-C with -O + else dfs2{ optLevel = n } + where + dfs1 = foldr (flip dopt_unset) dfs remove_dopts + dfs2 = foldr (flip dopt_set) dfs1 extra_dopts + + extra_dopts + | n == 0 = opt_0_dopts + | otherwise = opt_1_dopts + + remove_dopts + | n == 0 = opt_1_dopts + | otherwise = opt_0_dopts + +opt_0_dopts = [ + Opt_IgnoreInterfacePragmas, + Opt_OmitInterfacePragmas + ] + +opt_1_dopts = [ + Opt_IgnoreAsserts, + Opt_DoEtaReduction, + Opt_CaseMerge + ] + +-- ----------------------------------------------------------------------------- +-- Standard sets of warning options + +standardWarnings + = [ Opt_WarnDeprecations, + Opt_WarnOverlappingPatterns, + Opt_WarnMissingFields, + Opt_WarnMissingMethods, + Opt_WarnDuplicateExports + ] + +minusWOpts + = standardWarnings ++ + [ Opt_WarnUnusedBinds, + Opt_WarnUnusedMatches, + Opt_WarnUnusedImports, + Opt_WarnIncompletePatterns, + Opt_WarnDodgyImports + ] + +minusWallOpts + = minusWOpts ++ + [ Opt_WarnTypeDefaults, + Opt_WarnNameShadowing, + Opt_WarnMissingSigs, + Opt_WarnHiShadows, + Opt_WarnOrphans + ] + +-- ----------------------------------------------------------------------------- +-- CoreToDo: abstraction of core-to-core passes to run. + +data CoreToDo -- These are diff core-to-core passes, + -- which may be invoked in any order, + -- as many times as you like. + + = CoreDoSimplify -- The core-to-core simplifier. + SimplifierMode + [SimplifierSwitch] + -- Each run of the simplifier can take a different + -- set of simplifier-specific flags. + | CoreDoFloatInwards + | CoreDoFloatOutwards FloatOutSwitches + | CoreLiberateCase + | CoreDoPrintCore + | CoreDoStaticArgs + | CoreDoStrictness + | CoreDoWorkerWrapper + | CoreDoSpecialising + | CoreDoSpecConstr + | CoreDoOldStrictness + | CoreDoGlomBinds + | CoreCSE + | CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules + -- matching this string + + | CoreDoNothing -- useful when building up lists of these things + +data SimplifierMode -- See comments in SimplMonad + = SimplGently + | SimplPhase Int + +data SimplifierSwitch + = MaxSimplifierIterations Int + | NoCaseOfCase + +data FloatOutSwitches + = FloatOutSw Bool -- True <=> float lambdas to top level + Bool -- True <=> float constants to top level, + -- even if they do not escape a lambda + + +-- The core-to-core pass ordering is derived from the DynFlags: + +getCoreToDo :: DynFlags -> [CoreToDo] +getCoreToDo dflags + | Just todo <- coreToDo dflags = todo -- set explicitly by user + | otherwise = core_todo + where + opt_level = optLevel dflags + max_iter = maxSimplIterations dflags + strictness = dopt Opt_Strictness dflags + full_laziness = dopt Opt_FullLaziness dflags + cse = dopt Opt_CSE dflags + rule_check = ruleCheck dflags + + core_todo = + if opt_level == 0 then + [ + CoreDoSimplify (SimplPhase 0) [ + MaxSimplifierIterations max_iter + ] + ] + else {- opt_level >= 1 -} [ + + -- initial simplify: mk specialiser happy: minimum effort please + CoreDoSimplify SimplGently [ + -- Simplify "gently" + -- Don't inline anything till full laziness has bitten + -- In particular, inlining wrappers inhibits floating + -- e.g. ...(case f x of ...)... + -- ==> ...(case (case x of I# x# -> fw x#) of ...)... + -- ==> ...(case x of I# x# -> case fw x# of ...)... + -- and now the redex (f x) isn't floatable any more + -- Similarly, don't apply any rules until after full + -- laziness. Notably, list fusion can prevent floating. + + NoCaseOfCase, + -- Don't do case-of-case transformations. + -- This makes full laziness work better + MaxSimplifierIterations max_iter + ], + + -- Specialisation is best done before full laziness + -- so that overloaded functions have all their dictionary lambdas manifest + CoreDoSpecialising, + + if full_laziness then CoreDoFloatOutwards (FloatOutSw False False) + else CoreDoNothing, + + CoreDoFloatInwards, + + CoreDoSimplify (SimplPhase 2) [ + -- Want to run with inline phase 2 after the specialiser to give + -- maximum chance for fusion to work before we inline build/augment + -- in phase 1. This made a difference in 'ansi' where an + -- overloaded function wasn't inlined till too late. + MaxSimplifierIterations max_iter + ], + case rule_check of { Just pat -> CoreDoRuleCheck 2 pat; Nothing -> CoreDoNothing }, + + CoreDoSimplify (SimplPhase 1) [ + -- Need inline-phase2 here so that build/augment get + -- inlined. I found that spectral/hartel/genfft lost some useful + -- strictness in the function sumcode' if augment is not inlined + -- before strictness analysis runs + MaxSimplifierIterations max_iter + ], + case rule_check of { Just pat -> CoreDoRuleCheck 1 pat; Nothing -> CoreDoNothing }, + + CoreDoSimplify (SimplPhase 0) [ + -- Phase 0: allow all Ids to be inlined now + -- This gets foldr inlined before strictness analysis + + MaxSimplifierIterations 3 + -- At least 3 iterations because otherwise we land up with + -- huge dead expressions because of an infelicity in the + -- simpifier. + -- let k = BIG in foldr k z xs + -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs + -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs + -- Don't stop now! + + ], + case rule_check of { Just pat -> CoreDoRuleCheck 0 pat; Nothing -> CoreDoNothing }, + +#ifdef OLD_STRICTNESS + CoreDoOldStrictness +#endif + if strictness then CoreDoStrictness else CoreDoNothing, + CoreDoWorkerWrapper, + CoreDoGlomBinds, + + CoreDoSimplify (SimplPhase 0) [ + MaxSimplifierIterations max_iter + ], + + if full_laziness then + CoreDoFloatOutwards (FloatOutSw False -- Not lambdas + True) -- Float constants + else CoreDoNothing, + -- nofib/spectral/hartel/wang doubles in speed if you + -- do full laziness late in the day. It only happens + -- after fusion and other stuff, so the early pass doesn't + -- catch it. For the record, the redex is + -- f_el22 (f_el21 r_midblock) + + + -- We want CSE to follow the final full-laziness pass, because it may + -- succeed in commoning up things floated out by full laziness. + -- CSE used to rely on the no-shadowing invariant, but it doesn't any more + + if cse then CoreCSE else CoreDoNothing, + + CoreDoFloatInwards, + +-- Case-liberation for -O2. This should be after +-- strictness analysis and the simplification which follows it. + + case rule_check of { Just pat -> CoreDoRuleCheck 0 pat; Nothing -> CoreDoNothing }, + + if opt_level >= 2 then + CoreLiberateCase + else + CoreDoNothing, + if opt_level >= 2 then + CoreDoSpecConstr + else + CoreDoNothing, + + -- Final clean-up simplification: + CoreDoSimplify (SimplPhase 0) [ + MaxSimplifierIterations max_iter + ] + ] + +-- ----------------------------------------------------------------------------- +-- StgToDo: abstraction of stg-to-stg passes to run. + +data StgToDo + = StgDoMassageForProfiling -- should be (next to) last + -- There's also setStgVarInfo, but its absolute "lastness" + -- is so critical that it is hardwired in (no flag). + | D_stg_stats + +getStgToDo :: DynFlags -> [StgToDo] +getStgToDo dflags + | Just todo <- stgToDo dflags = todo -- set explicitly by user + | otherwise = todo2 + where + stg_stats = dopt Opt_StgStats dflags + + todo1 = if stg_stats then [D_stg_stats] else [] + + todo2 | WayProf `elem` wayNames dflags + = StgDoMassageForProfiling : todo1 + | otherwise + = todo1 + +-- ----------------------------------------------------------------------------- +-- DynFlags parser + +allFlags :: [String] +allFlags = map ('-':) $ + [ name | (name, optkind) <- dynamic_flags, ok optkind ] ++ + map ("fno-"++) flags ++ + map ("f"++) flags + where ok (PrefixPred _ _) = False + ok _ = True + flags = map fst fFlags + +dynamic_flags :: [(String, OptKind DynP)] +dynamic_flags = [ + ( "n" , NoArg (setDynFlag Opt_DryRun) ) + , ( "cpp" , NoArg (setDynFlag Opt_Cpp)) + , ( "F" , NoArg (setDynFlag Opt_Pp)) + , ( "#include" , HasArg (addCmdlineHCInclude) ) + , ( "v" , OptPrefix (setVerbosity) ) + + ------- Specific phases -------------------------------------------- + , ( "pgmL" , HasArg (upd . setPgmL) ) + , ( "pgmP" , HasArg (upd . setPgmP) ) + , ( "pgmF" , HasArg (upd . setPgmF) ) + , ( "pgmc" , HasArg (upd . setPgmc) ) + , ( "pgmm" , HasArg (upd . setPgmm) ) + , ( "pgms" , HasArg (upd . setPgms) ) + , ( "pgma" , HasArg (upd . setPgma) ) + , ( "pgml" , HasArg (upd . setPgml) ) + , ( "pgmdll" , HasArg (upd . setPgmdll) ) + + , ( "optL" , HasArg (upd . addOptL) ) + , ( "optP" , HasArg (upd . addOptP) ) + , ( "optF" , HasArg (upd . addOptF) ) + , ( "optc" , HasArg (upd . addOptc) ) + , ( "optm" , HasArg (upd . addOptm) ) + , ( "opta" , HasArg (upd . addOpta) ) + , ( "optl" , HasArg (upd . addOptl) ) + , ( "optdll" , HasArg (upd . addOptdll) ) + , ( "optdep" , HasArg (upd . addOptdep) ) + + , ( "split-objs" , NoArg (if can_split + then setDynFlag Opt_SplitObjs + else return ()) ) + + -------- 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 } )) + + ------- Libraries --------------------------------------------------- + , ( "L" , Prefix addLibraryPath ) + , ( "l" , AnySuffix (\s -> do upd (addOptl s) + upd (addOptdll s))) + + ------- Frameworks -------------------------------------------------- + -- -framework-path should really be -F ... + , ( "framework-path" , HasArg addFrameworkPath ) + , ( "framework" , HasArg (upd . addCmdlineFramework) ) + + ------- Output Redirection ------------------------------------------ + , ( "odir" , HasArg (upd . setObjectDir . Just)) + , ( "o" , SepArg (upd . setOutputFile . Just)) + , ( "ohi" , HasArg (upd . setOutputHi . Just )) + , ( "osuf" , HasArg (upd . setObjectSuf)) + , ( "hcsuf" , HasArg (upd . setHcSuf)) + , ( "hisuf" , HasArg (upd . setHiSuf)) + , ( "hidir" , HasArg (upd . setHiDir . Just)) + , ( "tmpdir" , HasArg (upd . setTmpDir)) + , ( "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)) + + ------- Miscellaneous ---------------------------------------------- + , ( "no-hs-main" , NoArg (setDynFlag Opt_NoHsMain)) + , ( "main-is" , SepArg setMainIs ) + + ------- recompilation checker -------------------------------------- + , ( "recomp" , NoArg (setDynFlag Opt_RecompChecking) ) + , ( "no-recomp" , NoArg (unSetDynFlag Opt_RecompChecking) ) + + ------- Packages ---------------------------------------------------- + , ( "package-conf" , HasArg extraPkgConf_ ) + , ( "no-user-package-conf", NoArg (unSetDynFlag Opt_ReadUserPackageConf) ) + , ( "package-name" , HasArg ignorePackage ) -- for compatibility + , ( "package" , HasArg exposePackage ) + , ( "hide-package" , HasArg hidePackage ) + , ( "hide-all-packages", NoArg (setDynFlag Opt_HideAllPackages) ) + , ( "ignore-package" , HasArg ignorePackage ) + , ( "syslib" , HasArg exposePackage ) -- for compatibility + + ------ HsCpp opts --------------------------------------------------- + , ( "D", AnySuffix (upd . addOptP) ) + , ( "U", AnySuffix (upd . addOptP) ) + + ------- Include/Import Paths ---------------------------------------- + , ( "I" , Prefix addIncludePath) + , ( "i" , OptPrefix addImportPath ) + + ------ Debugging ---------------------------------------------------- + , ( "dstg-stats", NoArg (setDynFlag Opt_StgStats)) + + , ( "ddump-cmm", setDumpFlag Opt_D_dump_cmm) + , ( "ddump-asm", setDumpFlag Opt_D_dump_asm) + , ( "ddump-cpranal", setDumpFlag Opt_D_dump_cpranal) + , ( "ddump-deriv", setDumpFlag Opt_D_dump_deriv) + , ( "ddump-ds", setDumpFlag Opt_D_dump_ds) + , ( "ddump-flatC", setDumpFlag Opt_D_dump_flatC) + , ( "ddump-foreign", setDumpFlag Opt_D_dump_foreign) + , ( "ddump-inlinings", setDumpFlag Opt_D_dump_inlinings) + , ( "ddump-occur-anal", setDumpFlag Opt_D_dump_occur_anal) + , ( "ddump-parsed", setDumpFlag Opt_D_dump_parsed) + , ( "ddump-rn", setDumpFlag Opt_D_dump_rn) + , ( "ddump-simpl", setDumpFlag Opt_D_dump_simpl) + , ( "ddump-simpl-iterations", setDumpFlag Opt_D_dump_simpl_iterations) + , ( "ddump-spec", setDumpFlag Opt_D_dump_spec) + , ( "ddump-prep", setDumpFlag Opt_D_dump_prep) + , ( "ddump-stg", setDumpFlag Opt_D_dump_stg) + , ( "ddump-stranal", setDumpFlag Opt_D_dump_stranal) + , ( "ddump-tc", setDumpFlag Opt_D_dump_tc) + , ( "ddump-types", setDumpFlag Opt_D_dump_types) + , ( "ddump-rules", setDumpFlag Opt_D_dump_rules) + , ( "ddump-cse", setDumpFlag Opt_D_dump_cse) + , ( "ddump-worker-wrapper", setDumpFlag Opt_D_dump_worker_wrapper) + , ( "ddump-rn-trace", NoArg (setDynFlag Opt_D_dump_rn_trace)) + , ( "ddump-if-trace", NoArg (setDynFlag Opt_D_dump_if_trace)) + , ( "ddump-tc-trace", setDumpFlag Opt_D_dump_tc_trace) + , ( "ddump-splices", setDumpFlag Opt_D_dump_splices) + , ( "ddump-rn-stats", NoArg (setDynFlag Opt_D_dump_rn_stats)) + , ( "ddump-opt-cmm", setDumpFlag Opt_D_dump_opt_cmm) + , ( "ddump-simpl-stats", setDumpFlag Opt_D_dump_simpl_stats) + , ( "ddump-bcos", setDumpFlag Opt_D_dump_BCOs) + , ( "dsource-stats", setDumpFlag Opt_D_source_stats) + , ( "dverbose-core2core", setDumpFlag Opt_D_verbose_core2core) + , ( "dverbose-stg2stg", setDumpFlag Opt_D_verbose_stg2stg) + , ( "ddump-hi-diffs", NoArg (setDynFlag Opt_D_dump_hi_diffs)) + , ( "ddump-hi", setDumpFlag Opt_D_dump_hi) + , ( "ddump-minimal-imports", NoArg (setDynFlag Opt_D_dump_minimal_imports)) + , ( "ddump-vect", setDumpFlag Opt_D_dump_vect) + , ( "dcore-lint", NoArg (setDynFlag Opt_DoCoreLinting)) + , ( "dstg-lint", NoArg (setDynFlag Opt_DoStgLinting)) + , ( "dcmm-lint", NoArg (setDynFlag Opt_DoCmmLinting)) + , ( "dshow-passes", NoArg (do unSetDynFlag Opt_RecompChecking + setVerbosity "2") ) + , ( "dfaststring-stats", NoArg (setDynFlag Opt_D_faststring_stats)) + + ------ Machine dependant (-m<blah>) stuff --------------------------- + + , ( "monly-2-regs", NoArg (upd (\s -> s{stolen_x86_regs = 2}) )) + , ( "monly-3-regs", NoArg (upd (\s -> s{stolen_x86_regs = 3}) )) + , ( "monly-4-regs", NoArg (upd (\s -> s{stolen_x86_regs = 4}) )) + + ------ Warning opts ------------------------------------------------- + , ( "W" , NoArg (mapM_ setDynFlag minusWOpts) ) + , ( "Werror" , NoArg (setDynFlag Opt_WarnIsError) ) + , ( "Wall" , NoArg (mapM_ setDynFlag minusWallOpts) ) + , ( "Wnot" , NoArg (mapM_ unSetDynFlag minusWallOpts) ) /* DEPREC */ + , ( "w" , NoArg (mapM_ unSetDynFlag minusWallOpts) ) + + ------ Optimisation flags ------------------------------------------ + , ( "O" , NoArg (upd (setOptLevel 1))) + , ( "Onot" , NoArg (upd (setOptLevel 0))) + , ( "O" , PrefixPred (all isDigit) + (\f -> upd (setOptLevel (read f)))) + + , ( "fmax-simplifier-iterations", + PrefixPred (all isDigit) + (\n -> upd (\dfs -> + dfs{ maxSimplIterations = read n })) ) + + , ( "frule-check", + SepArg (\s -> upd (\dfs -> dfs{ ruleCheck = Just s }))) + + ------ Compiler flags ----------------------------------------------- + + , ( "fno-code", NoArg (setTarget HscNothing)) + , ( "fasm", AnySuffix (\_ -> setTarget HscAsm) ) + , ( "fvia-c", NoArg (setTarget HscC) ) + , ( "fvia-C", NoArg (setTarget HscC) ) + , ( "filx", NoArg (setTarget HscILX) ) + + , ( "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)) ) + ] + +-- these -f<blah> flags can all be reversed with -fno-<blah> + +fFlags = [ + ( "warn-duplicate-exports", Opt_WarnDuplicateExports ), + ( "warn-hi-shadowing", Opt_WarnHiShadows ), + ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns ), + ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd ), + ( "warn-missing-fields", Opt_WarnMissingFields ), + ( "warn-missing-methods", Opt_WarnMissingMethods ), + ( "warn-missing-signatures", Opt_WarnMissingSigs ), + ( "warn-name-shadowing", Opt_WarnNameShadowing ), + ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns ), + ( "warn-simple-patterns", Opt_WarnSimplePatterns ), + ( "warn-type-defaults", Opt_WarnTypeDefaults ), + ( "warn-unused-binds", Opt_WarnUnusedBinds ), + ( "warn-unused-imports", Opt_WarnUnusedImports ), + ( "warn-unused-matches", Opt_WarnUnusedMatches ), + ( "warn-deprecations", Opt_WarnDeprecations ), + ( "warn-orphans", Opt_WarnOrphans ), + ( "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 ), + ( "monomorphism-restriction", Opt_MonomorphismRestriction ), + ( "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 ), + ( "cse", Opt_CSE ), + ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas ), + ( "omit-interface-pragmas", Opt_OmitInterfacePragmas ), + ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion ), + ( "ignore-asserts", Opt_IgnoreAsserts ), + ( "ignore-breakpoints", Opt_IgnoreBreakpoints), + ( "do-eta-reduction", Opt_DoEtaReduction ), + ( "case-merge", Opt_CaseMerge ), + ( "unbox-strict-fields", Opt_UnboxStrictFields ), + ( "excess-precision", Opt_ExcessPrecision ), + ( "asm-mangling", Opt_DoAsmMangling ) + ] + +glasgowExtsFlags = [ + Opt_GlasgowExts, + Opt_FFI, + Opt_TH, + Opt_ImplicitParams, + Opt_ScopedTypeVariables, + Opt_BangPatterns ] + +isFFlag f = f `elem` (map fst fFlags) +getFFlag f = fromJust (lookup f fFlags) + +-- ----------------------------------------------------------------------------- +-- Parsing the dynamic flags. + +parseDynamicFlags :: DynFlags -> [String] -> IO (DynFlags,[String]) +parseDynamicFlags dflags args = do + let ((leftover,errs),dflags') + = runCmdLine (processArgs dynamic_flags args) dflags + when (not (null errs)) $ do + throwDyn (UsageError (unlines errs)) + return (dflags', leftover) + + +type DynP = CmdLineP DynFlags + +upd :: (DynFlags -> DynFlags) -> DynP () +upd f = do + dfs <- getCmdLineState + putCmdLineState $! (f dfs) + +setDynFlag, unSetDynFlag :: DynFlag -> DynP () +setDynFlag f = upd (\dfs -> dopt_set dfs f) +unSetDynFlag f = upd (\dfs -> dopt_unset dfs f) + +setDumpFlag :: DynFlag -> OptKind DynP +setDumpFlag dump_flag + = NoArg (unSetDynFlag Opt_RecompChecking >> setDynFlag dump_flag) + -- Whenver we -ddump, switch off the recompilation checker, + -- else you don't see the dump! + +setVerbosity "" = upd (\dfs -> dfs{ verbosity = 3 }) +setVerbosity n + | all isDigit n = upd (\dfs -> dfs{ verbosity = read n }) + | otherwise = throwDyn (UsageError "can't parse verbosity flag (-v<n>)") + +addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s}) + +extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s }) + +exposePackage p = + upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s }) +hidePackage p = + upd (\s -> s{ packageFlags = HidePackage p : packageFlags s }) +ignorePackage p = + upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s }) + +-- we can only switch between HscC, HscAsmm, and HscILX with dynamic flags +-- (-fvia-C, -fasm, -filx respectively). +setTarget l = upd (\dfs -> case hscTarget dfs of + HscC -> dfs{ hscTarget = l } + HscAsm -> dfs{ hscTarget = l } + HscILX -> dfs{ hscTarget = l } + _ -> dfs) + +setOptLevel :: Int -> DynFlags -> DynFlags +setOptLevel n dflags + | hscTarget dflags == HscInterpreted && n > 0 + = dflags + -- not in IO any more, oh well: + -- putStr "warning: -O conflicts with --interactive; -O ignored.\n" + | otherwise + = updOptLevel n dflags + + +setMainIs :: String -> DynP () +setMainIs arg + | not (null main_fn) -- The arg looked like "Foo.baz" + = upd $ \d -> d{ mainFunIs = Just main_fn, + mainModIs = mkModule main_mod } + + | isUpper (head main_mod) -- The arg looked like "Foo" + = upd $ \d -> d{ mainModIs = mkModule main_mod } + + | otherwise -- The arg looked like "baz" + = upd $ \d -> d{ mainFunIs = Just main_mod } + where + (main_mod, main_fn) = splitLongestPrefix arg (== '.') + +----------------------------------------------------------------------------- +-- Paths & Libraries + +-- -i on its own deletes the import paths +addImportPath "" = upd (\s -> s{importPaths = []}) +addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p}) + + +addLibraryPath p = + upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p}) + +addIncludePath p = + upd (\s -> s{includePaths = includePaths s ++ splitPathList p}) + +addFrameworkPath p = + upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p}) + +split_marker = ':' -- not configurable (ToDo) + +splitPathList :: String -> [String] +splitPathList s = filter notNull (splitUp s) + -- empty paths are ignored: there might be a trailing + -- ':' in the initial list, for example. Empty paths can + -- cause confusion when they are translated into -I options + -- for passing to gcc. + where +#ifndef mingw32_TARGET_OS + splitUp xs = split split_marker xs +#else + -- Windows: 'hybrid' support for DOS-style paths in directory lists. + -- + -- That is, if "foo:bar:baz" is used, this interpreted as + -- consisting of three entries, 'foo', 'bar', 'baz'. + -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted + -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar" + -- + -- Notice that no attempt is made to fully replace the 'standard' + -- split marker ':' with the Windows / DOS one, ';'. The reason being + -- that this will cause too much breakage for users & ':' will + -- work fine even with DOS paths, if you're not insisting on being silly. + -- So, use either. + splitUp [] = [] + splitUp (x:':':div:xs) | div `elem` dir_markers + = ((x:':':div:p): splitUp rs) + where + (p,rs) = findNextPath xs + -- we used to check for existence of the path here, but that + -- required the IO monad to be threaded through the command-line + -- parser which is quite inconvenient. The + splitUp xs = cons p (splitUp rs) + where + (p,rs) = findNextPath xs + + cons "" xs = xs + cons x xs = x:xs + + -- will be called either when we've consumed nought or the + -- "<Drive>:/" part of a DOS path, so splitting is just a Q of + -- finding the next split marker. + findNextPath xs = + case break (`elem` split_markers) xs of + (p, d:ds) -> (p, ds) + (p, xs) -> (p, xs) + + split_markers :: [Char] + split_markers = [':', ';'] + + dir_markers :: [Char] + dir_markers = ['/', '\\'] +#endif + +-- ----------------------------------------------------------------------------- +-- tmpDir, where we store temporary files. + +setTmpDir :: FilePath -> DynFlags -> DynFlags +setTmpDir dir dflags = dflags{ tmpDir = canonicalise dir } + where +#if !defined(mingw32_HOST_OS) + canonicalise p = normalisePath p +#else + -- Canonicalisation of temp path under win32 is a bit more + -- involved: (a) strip trailing slash, + -- (b) normalise slashes + -- (c) just in case, if there is a prefix /cygdrive/x/, change to x: + -- + canonicalise path = normalisePath (xltCygdrive (removeTrailingSlash path)) + + -- if we're operating under cygwin, and TMP/TEMP is of + -- the form "/cygdrive/drive/path", translate this to + -- "drive:/path" (as GHC isn't a cygwin app and doesn't + -- understand /cygdrive paths.) + xltCygdrive path + | "/cygdrive/" `isPrefixOf` path = + case drop (length "/cygdrive/") path of + drive:xs@('/':_) -> drive:':':xs + _ -> path + | otherwise = path + + -- strip the trailing backslash (awful, but we only do this once). + removeTrailingSlash path = + case last path of + '/' -> init path + '\\' -> init path + _ -> path +#endif + +----------------------------------------------------------------------------- +-- Via-C compilation stuff + +machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations + [String]) -- for registerised HC compilations +machdepCCOpts dflags +#if alpha_TARGET_ARCH + = ( ["-w", "-mieee" +#ifdef HAVE_THREADED_RTS_SUPPORT + , "-D_REENTRANT" +#endif + ], [] ) + -- For now, to suppress the gcc warning "call-clobbered + -- register used for global register variable", we simply + -- disable all warnings altogether using the -w flag. Oh well. + +#elif hppa_TARGET_ARCH + -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi! + -- (very nice, but too bad the HP /usr/include files don't agree.) + = ( ["-D_HPUX_SOURCE"], [] ) + +#elif m68k_TARGET_ARCH + -- -fno-defer-pop : for the .hc files, we want all the pushing/ + -- popping of args to routines to be explicit; if we let things + -- be deferred 'til after an STGJUMP, imminent death is certain! + -- + -- -fomit-frame-pointer : *don't* + -- It's better to have a6 completely tied up being a frame pointer + -- rather than let GCC pick random things to do with it. + -- (If we want to steal a6, then we would try to do things + -- as on iX86, where we *do* steal the frame pointer [%ebp].) + = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] ) + +#elif i386_TARGET_ARCH + -- -fno-defer-pop : basically the same game as for m68k + -- + -- -fomit-frame-pointer : *must* in .hc files; because we're stealing + -- the fp (%ebp) for our register maps. + = let n_regs = stolen_x86_regs dflags + sta = opt_Static + in + ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else "" +-- , if suffixMatch "mingw32" cTARGETPLATFORM then "-mno-cygwin" else "" + ], + [ "-fno-defer-pop", +#ifdef HAVE_GCC_MNO_OMIT_LFPTR + -- Some gccs are configured with + -- -momit-leaf-frame-pointer on by default, and it + -- apparently takes precedence over + -- -fomit-frame-pointer, so we disable it first here. + "-mno-omit-leaf-frame-pointer", +#endif + "-fomit-frame-pointer", + -- we want -fno-builtin, because when gcc inlines + -- built-in functions like memcpy() it tends to + -- run out of registers, requiring -monly-n-regs + "-fno-builtin", + "-DSTOLEN_X86_REGS="++show n_regs ] + ) + +#elif ia64_TARGET_ARCH + = ( [], ["-fomit-frame-pointer", "-G0"] ) + +#elif x86_64_TARGET_ARCH + = ( [], ["-fomit-frame-pointer", + "-fno-asynchronous-unwind-tables", + -- the unwind tables are unnecessary for HC code, + -- and get in the way of -split-objs. Another option + -- would be to throw them away in the mangler, but this + -- is easier. + "-fno-unit-at-a-time", + -- unit-at-a-time doesn't do us any good, and screws + -- up -split-objs by moving the split markers around. + -- It's only turned on with -O2, but put it here just + -- in case someone uses -optc-O2. + "-fno-builtin" + -- calling builtins like strlen() using the FFI can + -- cause gcc to run out of regs, so use the external + -- version. + ] ) + +#elif mips_TARGET_ARCH + = ( ["-static"], [] ) + +#elif sparc_TARGET_ARCH + = ( [], ["-w"] ) + -- For now, to suppress the gcc warning "call-clobbered + -- register used for global register variable", we simply + -- disable all warnings altogether using the -w flag. Oh well. + +#elif powerpc_apple_darwin_TARGET + -- -no-cpp-precomp: + -- Disable Apple's precompiling preprocessor. It's a great thing + -- for "normal" programs, but it doesn't support register variable + -- declarations. + = ( [], ["-no-cpp-precomp"] ) +#else + = ( [], [] ) +#endif + +picCCOpts :: DynFlags -> [String] +picCCOpts dflags +#if darwin_TARGET_OS + -- Apple prefers to do things the other way round. + -- PIC is on by default. + -- -mdynamic-no-pic: + -- Turn off PIC code generation. + -- -fno-common: + -- Don't generate "common" symbols - these are unwanted + -- in dynamic libraries. + + | opt_PIC + = ["-fno-common"] + | otherwise + = ["-mdynamic-no-pic"] +#elif mingw32_TARGET_OS + -- no -fPIC for Windows + = [] +#else + | opt_PIC + = ["-fPIC"] + | otherwise + = [] +#endif + +-- ----------------------------------------------------------------------------- +-- Splitting + +can_split :: Bool +can_split = +#if defined(i386_TARGET_ARCH) \ + || defined(x86_64_TARGET_ARCH) \ + || defined(alpha_TARGET_ARCH) \ + || defined(hppa_TARGET_ARCH) \ + || defined(m68k_TARGET_ARCH) \ + || defined(mips_TARGET_ARCH) \ + || defined(powerpc_TARGET_ARCH) \ + || defined(rs6000_TARGET_ARCH) \ + || defined(sparc_TARGET_ARCH) + True +#else + False +#endif + |