--
-- 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
--
-----------------------------------------------------------------------------
+-- | 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.
module DynFlags (
- -- Dynamic flags
+ -- * Dynamic flags and associated configuration types
DynFlag(..),
DynFlags(..),
HscTarget(..), isObjectTarget, defaultObjectTarget,
fFlags, xFlags,
DPHBackend(..),
- -- Configuration of the core-to-core and stg-to-stg phases
- CoreToDo(..),
- StgToDo(..),
- SimplifierSwitch(..),
- SimplifierMode(..), FloatOutSwitches(..),
- getCoreToDo, getStgToDo,
-
- -- Manipulating DynFlags
+ -- ** Manipulating DynFlags
defaultDynFlags, -- DynFlags
initDynFlags, -- DynFlags -> IO DynFlags
dopt, -- DynFlag -> DynFlags -> Bool
dopt_set, dopt_unset, -- DynFlags -> DynFlag -> DynFlags
- getOpts, -- (DynFlags -> [a]) -> IO [a]
+ getOpts, -- DynFlags -> (DynFlags -> [a]) -> [a]
getVerbFlag,
+ getMainFun,
updOptLevel,
setTmpDir,
setPackageName,
- -- parsing DynFlags
+ -- ** Parsing DynFlags
parseDynamicFlags,
allFlags,
- -- misc stuff
+ supportedLanguages, languageOptions,
+
+ -- ** DynFlag C compiler options
machdepCCOpts, picCCOpts,
- supportedLanguages, languageOptions,
- compilerInfo,
+
+ -- * Configuration of the core-to-core passes
+ CoreToDo(..),
+ SimplifierMode(..),
+ SimplifierSwitch(..),
+ FloatOutSwitches(..),
+ getCoreToDo,
+
+ -- * Configuration of the stg-to-stg passes
+ StgToDo(..),
+ getStgToDo,
+
+ -- * Compiler configuration suitable for display to the user
+ compilerInfo
) where
#include "HsVersions.h"
import Module
import PackageConfig
-import PrelNames ( mAIN )
+import PrelNames ( mAIN, main_RDR_Unqual )
+import RdrName ( RdrName, mkRdrUnqual )
+import OccName ( mkVarOccFS )
#ifdef i386_TARGET_ARCH
import StaticFlags ( opt_Static )
#endif
import Config
import CmdLineParser
import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
-import Panic ( panic, GhcException(..) )
+import Panic
import UniqFM ( UniqFM )
import Util
import Maybes ( orElse )
import SrcLoc ( SrcSpan )
+import FastString
import Outputable
import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
import Data.IORef ( readIORef )
-import Control.Exception ( throwDyn )
import Control.Monad ( when )
import Data.Char
import System.FilePath
-import System.IO ( hPutStrLn, stderr )
+import System.IO ( stderr, hPutChar )
-- -----------------------------------------------------------------------------
-- DynFlags
+-- | Enumerates the simple on-or-off dynamic flags
data DynFlag
-- debugging flags
| Opt_WarnUnusedBinds
| Opt_WarnUnusedImports
| Opt_WarnUnusedMatches
- | Opt_WarnDeprecations
+ | Opt_WarnWarningsDeprecations
| Opt_WarnDeprecatedFlags
| Opt_WarnDodgyImports
| Opt_WarnOrphans
| Opt_WarnTabs
+ | Opt_WarnUnrecognisedPragmas
| Opt_WarnDodgyForeignImports
-- language opts
| Opt_TransformListComp
| Opt_GeneralizedNewtypeDeriving
| Opt_RecursiveDo
+ | Opt_PostfixOperators
| Opt_PatternGuards
| Opt_LiberalTypeSynonyms
| Opt_Rank2Types
| Opt_RunCPSZ
| Opt_ConvertToZipCfgAndBack
| Opt_AutoLinkPackages
+ | Opt_ImplicitImportQualified
-- keeping stuff
| Opt_KeepHiDiffs
deriving (Eq, Show)
+-- | Contains not only a collection of 'DynFlag's but also a plethora of
+-- information relating to the compilation of a single file or GHC session
data DynFlags = DynFlags {
ghcMode :: GhcMode,
ghcLink :: GhcLink,
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
- simplPhases :: Int, -- number of simplifier phases
- maxSimplIterations :: Int, -- max simplifier iterations
+ hscOutName :: String, -- ^ Name of the output file
+ extCoreName :: String, -- ^ Name of the .core output file
+ verbosity :: Int, -- ^ Verbosity level: see "DynFlags#verbosity_levels"
+ optLevel :: Int, -- ^ Optimisation level
+ simplPhases :: Int, -- ^ Number of simplifier phases
+ maxSimplIterations :: Int, -- ^ Max simplifier iterations
shouldDumpSimplPhase :: SimplifierMode -> Bool,
ruleCheck :: Maybe String,
- specConstrThreshold :: Maybe Int, -- Threshold for SpecConstr
- specConstrCount :: Maybe Int, -- Max number of specialisations for any one function
- liberateCaseThreshold :: Maybe Int, -- Threshold for LiberateCase
+ specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
+ specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
+ liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
stolen_x86_regs :: Int,
- cmdlineHcIncludes :: [String], -- -#includes
+ cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
importPaths :: [FilePath],
mainModIs :: Module,
mainFunIs :: Maybe String,
- ctxtStkDepth :: Int, -- Typechecker context stack depth
+ ctxtStkDepth :: Int, -- ^ Typechecker context stack depth
dphBackend :: DPHBackend,
thisPackage :: PackageId,
-- ways
- wayNames :: [WayName], -- way flags from the cmd line
- buildTag :: String, -- the global "way" (eg. "p" for prof)
- rtsBuildTag :: String, -- the RTS "way"
+ wayNames :: [WayName], -- ^ Way flags from the command line
+ buildTag :: String, -- ^ The global \"way\" (e.g. \"p\" for prof)
+ rtsBuildTag :: String, -- ^ The RTS \"way\"
-- paths etc.
objectDir :: Maybe String,
outputHi :: Maybe String,
dynLibLoader :: DynLibLoader,
- -- | This is set by DriverPipeline.runPipeline based on where
+ -- | This is set by 'DriverPipeline.runPipeline' based on where
-- its output is going.
dumpPrefix :: Maybe FilePath,
- -- | Override the dumpPrefix set by runPipeline.
- -- Set by -ddump-file-prefix
+ -- | Override the 'dumpPrefix' set by 'DriverPipeline.runPipeline'.
+ -- Set by @-ddump-file-prefix@
dumpPrefixForce :: Maybe FilePath,
includePaths :: [String],
ghcUsagePath :: FilePath, -- Filled in by SysTools
ghciUsagePath :: FilePath, -- ditto
- hpcDir :: String, -- ^ path to store the .mix files
+ hpcDir :: String, -- ^ Path to store the .mix files
-- options for particular phases
opt_L :: [String],
opt_m :: [String],
opt_a :: [String],
opt_l :: [String],
- opt_dep :: [String],
opt_windres :: [String],
-- commands for particular phases
pgm_sysman :: String,
pgm_windres :: String,
+ -- For ghc -M
+ depMakefile :: FilePath,
+ depIncludePkgDeps :: Bool,
+ depExcludeMods :: [ModuleName],
+ depSuffixes :: [String],
+ depWarnings :: Bool,
+
-- Package flags
extraPkgConfs :: [FilePath],
topDir :: FilePath, -- filled in by SysTools
systemPackageConfig :: FilePath, -- ditto
- -- The -package-conf flags given on the command line, in the order
+ -- ^ 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
+ -- ^ The @-package@ and @-hide-package@ flags from the command-line
-- Package state
-- NB. do not modify this field, it is calculated by
-- hsc dynamic flags
flags :: [DynFlag],
- -- message output
+ -- | Message output action: use "ErrUtils" instead of this if you can
log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
haddockOptions :: Maybe String
| HscNothing
deriving (Eq, Show)
--- | will this target result in an object file on the disk?
+-- | Will this target result in an object file on the disk?
isObjectTarget :: HscTarget -> Bool
isObjectTarget HscC = True
isObjectTarget HscAsm = True
-- imported modules, but in multi-module mode we look for source files
-- in order to check whether they need to be recompiled.
data GhcMode
- = CompManager -- ^ --make, GHCi, etc.
- | OneShot -- ^ ghc -c Foo.hs
- | MkDepend -- ^ ghc -M, see Finder for why we need this
+ = CompManager -- ^ @\-\-make@, GHCi, etc.
+ | OneShot -- ^ @ghc -c Foo.hs@
+ | MkDepend -- ^ @ghc -M@, see "Finder" for why we need this
deriving Eq
isOneShot :: GhcMode -> Bool
isOneShot OneShot = True
isOneShot _other = False
--- | What kind of linking to do.
-data GhcLink -- What to do in the link step, if there is one
- = NoLink -- Don't link at all
- | LinkBinary -- Link object code into a binary
- | LinkInMemory -- Use the in-memory dynamic linker
- | LinkDynLib -- Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
+-- | What to do in the link step, if there is one.
+data GhcLink
+ = NoLink -- ^ Don't link at all
+ | LinkBinary -- ^ Link object code into a binary
+ | LinkInMemory -- ^ Use the in-memory dynamic linker
+ | LinkDynLib -- ^ Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
deriving (Eq, Show)
isNoLink :: GhcLink -> Bool
defaultHscTarget :: HscTarget
defaultHscTarget = defaultObjectTarget
--- | the 'HscTarget' value corresponding to the default way to create
+-- | The 'HscTarget' value corresponding to the default way to create
-- object files on the current platform.
defaultObjectTarget :: HscTarget
defaultObjectTarget
| SystemDependent
deriving Eq
+-- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
initDynFlags :: DynFlags -> IO DynFlags
initDynFlags dflags = do
-- someday these will be dynamic flags
rtsBuildTag = rts_build_tag
}
+-- | The normal 'DynFlags'. Note that they is not suitable for use in this form
+-- and must be fully initialized by 'GHC.newSession' first.
defaultDynFlags :: DynFlags
defaultDynFlags =
DynFlags {
opt_a = [],
opt_m = [],
opt_l = [],
- opt_dep = [],
opt_windres = [],
extraPkgConfs = [],
pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
pgm_windres = panic "defaultDynFlags: No pgm_windres",
-- end of initSysTools values
+ -- ghc -M values
+ depMakefile = "Makefile",
+ depIncludePkgDeps = False,
+ depExcludeMods = [],
+ depSuffixes = [],
+ depWarnings = True,
+ -- end of ghc -M values
haddockOptions = Nothing,
flags = [
Opt_AutoLinkPackages,
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))
+ SevInfo -> printErrs (msg style)
+ SevFatal -> printErrs (msg style)
+ _ -> do
+ hPutChar stderr '\n'
+ printErrs ((mkLocMessage srcSpan msg) style)
+ -- careful (#2302): printErrs prints in UTF-8, whereas
+ -- converting to string first and using hPutStr would
+ -- just emit the low 8 bits of each unicode char.
}
{-
+ #verbosity_levels#
Verbosity levels:
0 | print errors & warnings only
5 | "ghc -v -ddump-all"
-}
+-- | Test whether a 'DynFlag' is set
dopt :: DynFlag -> DynFlags -> Bool
dopt f dflags = f `elem` (flags dflags)
+-- | Set a 'DynFlag'
dopt_set :: DynFlags -> DynFlag -> DynFlags
dopt_set dfs f = dfs{ flags = f : flags dfs }
+-- | Unset a 'DynFlag'
dopt_unset :: DynFlags -> DynFlag -> DynFlags
dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
-getOpts :: DynFlags -> (DynFlags -> [a]) -> [a]
+-- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
+getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
+ -> (DynFlags -> [a]) -- ^ Relevant record accessor: one of the @opt_*@ accessors
+ -> [a] -- ^ Correctly ordered extracted options
getOpts dflags opts = reverse (opts dflags)
-- We add to the options from the front, so we need to reverse the list
+-- | Gets the verbosity flag for the current verbosity level. This is fed to
+-- other tools, so GHC-specific verbosity flags like @-ddump-most@ are not included
getVerbFlag :: DynFlags -> String
getVerbFlag dflags
| verbosity dflags >= 3 = "-v"
setObjectDir, setHiDir, setStubDir, setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
setPgmP, setPgmL, setPgmF, setPgmc, setPgmm, setPgms, setPgma, setPgml, setPgmdll, setPgmwindres,
- addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptdep, addOptwindres,
+ addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptwindres,
addCmdlineFramework, addHaddockOpts
:: String -> DynFlags -> DynFlags
setOutputFile, setOutputHi, setDumpPrefixForce
setHiDir f d = d{ hiDir = Just f}
setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
-- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
- -- #included from the .hc file when compiling with -fvia-C.
+ -- \#included from the .hc file when compiling with -fvia-C.
setObjectSuf f d = d{ objectSuf = f}
setHiSuf f d = d{ hiSuf = f}
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}
-addOptdep f d = d{ opt_dep = f : opt_dep d}
addOptwindres f d = d{ opt_windres = f : opt_windres d}
+setDepMakefile :: FilePath -> DynFlags -> DynFlags
+setDepMakefile f d = d { depMakefile = deOptDep f }
+
+setDepIncludePkgDeps :: Bool -> DynFlags -> DynFlags
+setDepIncludePkgDeps b d = d { depIncludePkgDeps = b }
+
+addDepExcludeMod :: String -> DynFlags -> DynFlags
+addDepExcludeMod m d
+ = d { depExcludeMods = mkModuleName (deOptDep m) : depExcludeMods d }
+
+addDepSuffix :: FilePath -> DynFlags -> DynFlags
+addDepSuffix s d = d { depSuffixes = deOptDep s : depSuffixes d }
+
+setDepWarnings :: Bool -> DynFlags -> DynFlags
+setDepWarnings b d = d { depWarnings = b }
+
+-- XXX Legacy code:
+-- We used to use "-optdep-flag -optdeparg", so for legacy applications
+-- we need to strip the "-optdep" off of the arg
+deOptDep :: String -> String
+deOptDep x = case maybePrefixMatch "-optdep" x of
+ Just rest -> rest
+ Nothing -> x
+
addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
addHaddockOpts f d = d{ haddockOptions = Just f}
-- -----------------------------------------------------------------------------
-- Command-line options
--- When invoking external tools as part of the compilation pipeline, we
+-- | 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
+-- between filepaths and 'other stuff'. The reason for this is that
-- this type gives us a handle on transforming filenames, and filenames only,
--- to whatever format they're expected to be on a particular platform.]
-
+-- 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
-- Setting the optimisation level
updOptLevel :: Int -> DynFlags -> DynFlags
--- Set dynflags appropriate to the optimisation level
+-- ^ Sets the 'DynFlags' to be appropriate to the optimisation level
updOptLevel n dfs
= dfs2{ optLevel = final_n }
where
standardWarnings :: [DynFlag]
standardWarnings
- = [ Opt_WarnDeprecations,
+ = [ Opt_WarnWarningsDeprecations,
Opt_WarnDeprecatedFlags,
+ Opt_WarnUnrecognisedPragmas,
Opt_WarnOverlappingPatterns,
Opt_WarnMissingFields,
Opt_WarnMissingMethods,
Opt_WarnIncompletePatternsRecUpd,
Opt_WarnSimplePatterns,
Opt_WarnMonomorphism,
+ Opt_WarnUnrecognisedPragmas,
Opt_WarnTabs
]
, Flag "optm" (HasArg (upd . addOptm)) Supported
, Flag "opta" (HasArg (upd . addOpta)) Supported
, Flag "optl" (HasArg (upd . addOptl)) Supported
- , Flag "optdep" (HasArg (upd . addOptdep)) Supported
, Flag "optwindres" (HasArg (upd . addOptwindres)) Supported
, Flag "split-objs"
(NoArg (if can_split then setDynFlag Opt_SplitObjs else return ()))
Supported
+ -------- ghc -M -----------------------------------------------------
+ , Flag "dep-suffix" (HasArg (upd . addDepSuffix)) Supported
+ , Flag "optdep-s" (HasArg (upd . addDepSuffix))
+ (Deprecated "Use -dep-suffix instead")
+ , Flag "dep-makefile" (HasArg (upd . setDepMakefile)) Supported
+ , Flag "optdep-f" (HasArg (upd . setDepMakefile))
+ (Deprecated "Use -dep-makefile instead")
+ , Flag "optdep-w" (NoArg (upd (setDepWarnings False)))
+ (Deprecated "-optdep-w doesn't do anything")
+ , Flag "include-pkg-deps" (NoArg (upd (setDepIncludePkgDeps True))) Supported
+ , Flag "optdep--include-prelude" (NoArg (upd (setDepIncludePkgDeps True)))
+ (Deprecated "Use -include-pkg-deps instead")
+ , Flag "optdep--include-pkg-deps" (NoArg (upd (setDepIncludePkgDeps True)))
+ (Deprecated "Use -include-pkg-deps instead")
+ , Flag "exclude-module" (HasArg (upd . addDepExcludeMod)) Supported
+ , Flag "optdep--exclude-module" (HasArg (upd . addDepExcludeMod))
+ (Deprecated "Use -exclude-module instead")
+ , Flag "optdep-x" (HasArg (upd . addDepExcludeMod))
+ (Deprecated "Use -exclude-module instead")
+
-------- Linking ----------------------------------------------------
, Flag "c" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
Supported
++ map (mkFlag True "X" setDynFlag ) xFlags
++ map (mkFlag False "XNo" unSetDynFlag) xFlags
-mkFlag :: Bool -- True => turn it on, False => turn it off
- -> String
+mkFlag :: Bool -- ^ True <=> it should be turned on
+ -> String -- ^ The flag prefix
-> (DynFlag -> DynP ())
-> (String, DynFlag, Bool -> Deprecated)
-> Flag DynP
Deprecated ("Use the " ++ prefix ++ lang ++ " language instead")
where prefix = if turnOn then "" else "No"
--- these -f<blah> flags can all be reversed with -fno-<blah>
-
+-- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
fFlags :: [(String, DynFlag, Bool -> Deprecated)]
fFlags = [
( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, const Supported ),
( "warn-unused-binds", Opt_WarnUnusedBinds, const Supported ),
( "warn-unused-imports", Opt_WarnUnusedImports, const Supported ),
( "warn-unused-matches", Opt_WarnUnusedMatches, const Supported ),
- ( "warn-deprecations", Opt_WarnDeprecations, const Supported ),
+ ( "warn-warnings-deprecations", Opt_WarnWarningsDeprecations, const Supported ),
( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, const Supported ),
( "warn-orphans", Opt_WarnOrphans, const Supported ),
( "warn-tabs", Opt_WarnTabs, const Supported ),
+ ( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, const Supported ),
( "print-explicit-foralls", Opt_PrintExplicitForalls, const Supported ),
( "strictness", Opt_Strictness, const Supported ),
( "static-argument-transformation", Opt_StaticArgumentTransformation, const Supported ),
( "allow-incoherent-instances", Opt_IncoherentInstances,
deprecatedForLanguage "IncoherentInstances" ),
( "gen-manifest", Opt_GenManifest, const Supported ),
- ( "embed-manifest", Opt_EmbedManifest, const Supported )
+ ( "embed-manifest", Opt_EmbedManifest, const Supported ),
+ ( "implicit-import-qualified", Opt_ImplicitImportQualified, const Supported )
]
supportedLanguages :: [String]
languageOptions :: [DynFlag]
languageOptions = [ dynFlag | (_, dynFlag, _) <- xFlags ]
--- These -X<blah> flags can all be reversed with -XNo<blah>
+-- | These -X<blah> flags can all be reversed with -XNo<blah>
xFlags :: [(String, DynFlag, Bool -> Deprecated)]
xFlags = [
( "CPP", Opt_Cpp, const Supported ),
+ ( "PostfixOperators", Opt_PostfixOperators, const Supported ),
( "PatternGuards", Opt_PatternGuards, const Supported ),
( "UnicodeSyntax", Opt_UnicodeSyntax, const Supported ),
( "MagicHash", Opt_MagicHash, const Supported ),
, Opt_PolymorphicComponents
, Opt_ExistentialQuantification
, Opt_UnicodeSyntax
+ , Opt_PostfixOperators
, Opt_PatternGuards
, Opt_LiberalTypeSynonyms
, Opt_RankNTypes
parseDynamicFlags :: DynFlags -> [String] -> IO (DynFlags, [String], [String])
parseDynamicFlags dflags args = do
+ -- XXX Legacy support code
+ -- We used to accept things like
+ -- optdep-f -optdepdepend
+ -- optdep-f -optdep depend
+ -- optdep -f -optdepdepend
+ -- optdep -f -optdep depend
+ -- but the spaces trip up proper argument handling. So get rid of them.
+ let f ("-optdep" : x : xs) = ("-optdep" ++ x) : f xs
+ f (x : xs) = x : f xs
+ f xs = xs
+ args' = f args
let ((leftover, errs, warns), dflags')
- = runCmdLine (processArgs dynamic_flags args) dflags
+ = runCmdLine (processArgs dynamic_flags args') dflags
when (not (null errs)) $ do
- throwDyn (UsageError (unlines errs))
+ ghcError (UsageError (unlines errs))
return (dflags', leftover, warns)
type DynP = CmdLineP DynFlags
setPackageName :: String -> DynFlags -> DynFlags
setPackageName p
| Nothing <- unpackPackageId pid
- = throwDyn (CmdLineError ("cannot parse \'" ++ p ++ "\' as a package identifier"))
+ = ghcError (CmdLineError ("cannot parse \'" ++ p ++ "\' as a package identifier"))
| otherwise
= \s -> s{ thisPackage = pid }
where
where
(main_mod, main_fn) = splitLongestPrefix arg (== '.')
+-- | Get the unqualified name of the function to use as the \"main\" for the main module.
+-- Either returns the default name or the one configured on the command line with -main-is
+getMainFun :: DynFlags -> RdrName
+getMainFun dflags = case (mainFunIs dflags) of
+ Just fn -> mkRdrUnqual (mkVarOccFS (mkFastString fn))
+ Nothing -> main_RDR_Unqual
+
-----------------------------------------------------------------------------
-- Paths & Libraries
sta = opt_Static
in
( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
--- , if "mingw32" `isSuffixOf` cTARGETPLATFORM then "-mno-cygwin" else ""
],
[ "-fno-defer-pop",
"-fomit-frame-pointer",