{-# LANGUAGE PatternGuards #-} ----------------------------------------------------------------------------- -- | -- Module : Distribution.Simple.GHC -- Copyright : Isaac Jones 2003-2007 -- License : BSD3 -- -- Maintainer : cabal-devel@haskell.org -- Portability : portable -- -- This is a fairly large module. It contains most of the GHC-specific code for -- configuring, building and installing packages. It also exports a function -- for finding out what packages are already installed. Configuring involves -- finding the @ghc@ and @ghc-pkg@ programs, finding what language extensions -- this version of ghc supports and returning a 'Compiler' value. -- -- 'getInstalledPackages' involves calling the @ghc-pkg@ program to find out -- what packages are installed. -- -- Building is somewhat complex as there is quite a bit of information to take -- into account. We have to build libs and programs, possibly for profiling and -- shared libs. We have to support building libraries that will be usable by -- GHCi and also ghc's @-split-objs@ feature. We have to compile any C files -- using ghc. Linking, especially for @split-objs@ is remarkably complex, -- partly because there tend to be 1,000's of @.o@ files and this can often be -- more than we can pass to the @ld@ or @ar@ programs in one go. -- -- Installing for libs and exes involves finding the right files and copying -- them to the right places. One of the more tricky things about this module is -- remembering the layout of files in the build directory (which is not -- explicitly documented) and thus what search dirs are used for various kinds -- of files. module Distribution.Simple.GHC ( getGhcInfo, configure, getInstalledPackages, getInstalledPackagesMonitorFiles, getPackageDBContents, buildLib, buildExe, replLib, replExe, startInterpreter, installLib, installExe, libAbiHash, hcPkgInfo, registerPackage, componentGhcOptions, componentCcGhcOptions, getLibDir, isDynamic, getGlobalPackageDB, pkgRoot ) where import Control.Applicative -- 7.10 -Werror workaround import Prelude -- https://ghc.haskell.org/trac/ghc/wiki/Migration/7.10#GHCsaysTheimportof...isredundant import qualified Distribution.Simple.GHC.IPI642 as IPI642 import qualified Distribution.Simple.GHC.Internal as Internal import Distribution.Simple.GHC.ImplInfo import Distribution.PackageDescription as PD import Distribution.InstalledPackageInfo (InstalledPackageInfo) import qualified Distribution.InstalledPackageInfo as InstalledPackageInfo import Distribution.Simple.PackageIndex (InstalledPackageIndex) import qualified Distribution.Simple.PackageIndex as PackageIndex import Distribution.Simple.LocalBuildInfo import qualified Distribution.Simple.Hpc as Hpc import Distribution.Simple.BuildPaths import Distribution.Simple.Utils import Distribution.Package import qualified Distribution.ModuleName as ModuleName import Distribution.Simple.Program import qualified Distribution.Simple.Program.HcPkg as HcPkg import qualified Distribution.Simple.Program.Ar as Ar import qualified Distribution.Simple.Program.Ld as Ld import qualified Distribution.Simple.Program.Strip as Strip import Distribution.Simple.Program.GHC import Distribution.Simple.Setup import qualified Distribution.Simple.Setup as Cabal import Distribution.Simple.Compiler hiding (Flag) import Distribution.Version import Distribution.System import Distribution.Verbosity import Distribution.Text import Distribution.Utils.NubList import Language.Haskell.Extension import Control.Monad ( unless, when ) import Data.Char ( isDigit, isSpace ) import Data.List import qualified Data.Map as M ( fromList, lookup ) import Data.Maybe ( catMaybes ) import Data.Monoid as Mon ( Monoid(..) ) import Data.Version ( showVersion ) import System.Directory ( doesFileExist, getAppUserDataDirectory, createDirectoryIfMissing , canonicalizePath ) import System.FilePath ( (), (<.>), takeExtension , takeDirectory, replaceExtension , isRelative ) import qualified System.Info -- ----------------------------------------------------------------------------- -- Configuring configure :: Verbosity -> Maybe FilePath -> Maybe FilePath -> ProgramConfiguration -> IO (Compiler, Maybe Platform, ProgramConfiguration) configure verbosity hcPath hcPkgPath conf0 = do (ghcProg, ghcVersion, conf1) <- requireProgramVersion verbosity ghcProgram (orLaterVersion (Version [6,4] [])) (userMaybeSpecifyPath "ghc" hcPath conf0) let implInfo = ghcVersionImplInfo ghcVersion -- This is slightly tricky, we have to configure ghc first, then we use the -- location of ghc to help find ghc-pkg in the case that the user did not -- specify the location of ghc-pkg directly: (ghcPkgProg, ghcPkgVersion, conf2) <- requireProgramVersion verbosity ghcPkgProgram { programFindLocation = guessGhcPkgFromGhcPath ghcProg } anyVersion (userMaybeSpecifyPath "ghc-pkg" hcPkgPath conf1) when (ghcVersion /= ghcPkgVersion) $ die $ "Version mismatch between ghc and ghc-pkg: " ++ programPath ghcProg ++ " is version " ++ display ghcVersion ++ " " ++ programPath ghcPkgProg ++ " is version " ++ display ghcPkgVersion -- Likewise we try to find the matching hsc2hs and haddock programs. let hsc2hsProgram' = hsc2hsProgram { programFindLocation = guessHsc2hsFromGhcPath ghcProg } haddockProgram' = haddockProgram { programFindLocation = guessHaddockFromGhcPath ghcProg } conf3 = addKnownProgram haddockProgram' $ addKnownProgram hsc2hsProgram' conf2 languages <- Internal.getLanguages verbosity implInfo ghcProg extensions0 <- Internal.getExtensions verbosity implInfo ghcProg ghcInfo <- Internal.getGhcInfo verbosity implInfo ghcProg let ghcInfoMap = M.fromList ghcInfo extensions = -- workaround https://ghc.haskell.org/ticket/11214 filterExt JavaScriptFFI $ -- see 'filterExtTH' comment below filterExtTH $ extensions0 -- starting with GHC 8.0, `TemplateHaskell` will be omitted from -- `--supported-extensions` when it's not available. -- for older GHCs we can use the "Have interpreter" property to -- filter out `TemplateHaskell` filterExtTH | ghcVersion < Version [8] [] , Just "NO" <- M.lookup "Have interpreter" ghcInfoMap = filterExt TemplateHaskell | otherwise = id filterExt ext = filter ((/= EnableExtension ext) . fst) let comp = Compiler { compilerId = CompilerId GHC ghcVersion, compilerAbiTag = NoAbiTag, compilerCompat = [], compilerLanguages = languages, compilerExtensions = extensions, compilerProperties = ghcInfoMap } compPlatform = Internal.targetPlatform ghcInfo -- configure gcc and ld conf4 = Internal.configureToolchain implInfo ghcProg ghcInfoMap conf3 return (comp, compPlatform, conf4) -- | Given something like /usr/local/bin/ghc-6.6.1(.exe) we try and find -- the corresponding tool; e.g. if the tool is ghc-pkg, we try looking -- for a versioned or unversioned ghc-pkg in the same dir, that is: -- -- > /usr/local/bin/ghc-pkg-ghc-6.6.1(.exe) -- > /usr/local/bin/ghc-pkg-6.6.1(.exe) -- > /usr/local/bin/ghc-pkg(.exe) -- guessToolFromGhcPath :: Program -> ConfiguredProgram -> Verbosity -> ProgramSearchPath -> IO (Maybe (FilePath, [FilePath])) guessToolFromGhcPath tool ghcProg verbosity searchpath = do let toolname = programName tool given_path = programPath ghcProg given_dir = takeDirectory given_path real_path <- canonicalizePath given_path let real_dir = takeDirectory real_path versionSuffix path = takeVersionSuffix (dropExeExtension path) given_suf = versionSuffix given_path real_suf = versionSuffix real_path guessNormal dir = dir toolname <.> exeExtension guessGhcVersioned dir suf = dir (toolname ++ "-ghc" ++ suf) <.> exeExtension guessVersioned dir suf = dir (toolname ++ suf) <.> exeExtension mkGuesses dir suf | null suf = [guessNormal dir] | otherwise = [guessGhcVersioned dir suf, guessVersioned dir suf, guessNormal dir] guesses = mkGuesses given_dir given_suf ++ if real_path == given_path then [] else mkGuesses real_dir real_suf info verbosity $ "looking for tool " ++ toolname ++ " near compiler in " ++ given_dir debug verbosity $ "candidate locations: " ++ show guesses exists <- mapM doesFileExist guesses case [ file | (file, True) <- zip guesses exists ] of -- If we can't find it near ghc, fall back to the usual -- method. [] -> programFindLocation tool verbosity searchpath (fp:_) -> do info verbosity $ "found " ++ toolname ++ " in " ++ fp let lookedAt = map fst . takeWhile (\(_file, exist) -> not exist) $ zip guesses exists return (Just (fp, lookedAt)) where takeVersionSuffix :: FilePath -> String takeVersionSuffix = takeWhileEndLE isSuffixChar isSuffixChar :: Char -> Bool isSuffixChar c = isDigit c || c == '.' || c == '-' -- | Given something like /usr/local/bin/ghc-6.6.1(.exe) we try and find a -- corresponding ghc-pkg, we try looking for both a versioned and unversioned -- ghc-pkg in the same dir, that is: -- -- > /usr/local/bin/ghc-pkg-ghc-6.6.1(.exe) -- > /usr/local/bin/ghc-pkg-6.6.1(.exe) -- > /usr/local/bin/ghc-pkg(.exe) -- guessGhcPkgFromGhcPath :: ConfiguredProgram -> Verbosity -> ProgramSearchPath -> IO (Maybe (FilePath, [FilePath])) guessGhcPkgFromGhcPath = guessToolFromGhcPath ghcPkgProgram -- | Given something like /usr/local/bin/ghc-6.6.1(.exe) we try and find a -- corresponding hsc2hs, we try looking for both a versioned and unversioned -- hsc2hs in the same dir, that is: -- -- > /usr/local/bin/hsc2hs-ghc-6.6.1(.exe) -- > /usr/local/bin/hsc2hs-6.6.1(.exe) -- > /usr/local/bin/hsc2hs(.exe) -- guessHsc2hsFromGhcPath :: ConfiguredProgram -> Verbosity -> ProgramSearchPath -> IO (Maybe (FilePath, [FilePath])) guessHsc2hsFromGhcPath = guessToolFromGhcPath hsc2hsProgram -- | Given something like /usr/local/bin/ghc-6.6.1(.exe) we try and find a -- corresponding haddock, we try looking for both a versioned and unversioned -- haddock in the same dir, that is: -- -- > /usr/local/bin/haddock-ghc-6.6.1(.exe) -- > /usr/local/bin/haddock-6.6.1(.exe) -- > /usr/local/bin/haddock(.exe) -- guessHaddockFromGhcPath :: ConfiguredProgram -> Verbosity -> ProgramSearchPath -> IO (Maybe (FilePath, [FilePath])) guessHaddockFromGhcPath = guessToolFromGhcPath haddockProgram getGhcInfo :: Verbosity -> ConfiguredProgram -> IO [(String, String)] getGhcInfo verbosity ghcProg = Internal.getGhcInfo verbosity implInfo ghcProg where Just version = programVersion ghcProg implInfo = ghcVersionImplInfo version -- | Given a single package DB, return all installed packages. getPackageDBContents :: Verbosity -> PackageDB -> ProgramConfiguration -> IO InstalledPackageIndex getPackageDBContents verbosity packagedb conf = do pkgss <- getInstalledPackages' verbosity [packagedb] conf toPackageIndex verbosity pkgss conf -- | Given a package DB stack, return all installed packages. getInstalledPackages :: Verbosity -> Compiler -> PackageDBStack -> ProgramConfiguration -> IO InstalledPackageIndex getInstalledPackages verbosity comp packagedbs conf = do checkPackageDbEnvVar checkPackageDbStack comp packagedbs pkgss <- getInstalledPackages' verbosity packagedbs conf index <- toPackageIndex verbosity pkgss conf return $! hackRtsPackage index where hackRtsPackage index = case PackageIndex.lookupPackageName index (PackageName "rts") of [(_,[rts])] -> PackageIndex.insert (removeMingwIncludeDir rts) index _ -> index -- No (or multiple) ghc rts package is registered!! -- Feh, whatever, the ghc test suite does some crazy stuff. -- | Given a list of @(PackageDB, InstalledPackageInfo)@ pairs, produce a -- @PackageIndex@. Helper function used by 'getPackageDBContents' and -- 'getInstalledPackages'. toPackageIndex :: Verbosity -> [(PackageDB, [InstalledPackageInfo])] -> ProgramConfiguration -> IO InstalledPackageIndex toPackageIndex verbosity pkgss conf = do -- On Windows, various fields have $topdir/foo rather than full -- paths. We need to substitute the right value in so that when -- we, for example, call gcc, we have proper paths to give it. topDir <- getLibDir' verbosity ghcProg let indices = [ PackageIndex.fromList (map (Internal.substTopDir topDir) pkgs) | (_, pkgs) <- pkgss ] return $! mconcat indices where Just ghcProg = lookupProgram ghcProgram conf getLibDir :: Verbosity -> LocalBuildInfo -> IO FilePath getLibDir verbosity lbi = dropWhileEndLE isSpace `fmap` rawSystemProgramStdoutConf verbosity ghcProgram (withPrograms lbi) ["--print-libdir"] getLibDir' :: Verbosity -> ConfiguredProgram -> IO FilePath getLibDir' verbosity ghcProg = dropWhileEndLE isSpace `fmap` rawSystemProgramStdout verbosity ghcProg ["--print-libdir"] -- | Return the 'FilePath' to the global GHC package database. getGlobalPackageDB :: Verbosity -> ConfiguredProgram -> IO FilePath getGlobalPackageDB verbosity ghcProg = dropWhileEndLE isSpace `fmap` rawSystemProgramStdout verbosity ghcProg ["--print-global-package-db"] -- | Return the 'FilePath' to the per-user GHC package database. getUserPackageDB :: Verbosity -> ConfiguredProgram -> Platform -> IO FilePath getUserPackageDB _verbosity ghcProg (Platform arch os) = do -- It's rather annoying that we have to reconstruct this, because ghc -- hides this information from us otherwise. But for certain use cases -- like change monitoring it really can't remain hidden. appdir <- getAppUserDataDirectory "ghc" return (appdir platformAndVersion packageConfFileName) where platformAndVersion = intercalate "-" [ Internal.showArchString arch , Internal.showOsString os , display ghcVersion ] packageConfFileName | ghcVersion >= Version [6,12] [] = "package.conf.d" | otherwise = "package.conf" Just ghcVersion = programVersion ghcProg checkPackageDbEnvVar :: IO () checkPackageDbEnvVar = Internal.checkPackageDbEnvVar "GHC" "GHC_PACKAGE_PATH" checkPackageDbStack :: Compiler -> PackageDBStack -> IO () checkPackageDbStack comp = if flagPackageConf implInfo then checkPackageDbStackPre76 else checkPackageDbStackPost76 where implInfo = ghcVersionImplInfo (compilerVersion comp) checkPackageDbStackPost76 :: PackageDBStack -> IO () checkPackageDbStackPost76 (GlobalPackageDB:rest) | GlobalPackageDB `notElem` rest = return () checkPackageDbStackPost76 rest | GlobalPackageDB `elem` rest = die $ "If the global package db is specified, it must be " ++ "specified first and cannot be specified multiple times" checkPackageDbStackPost76 _ = return () checkPackageDbStackPre76 :: PackageDBStack -> IO () checkPackageDbStackPre76 (GlobalPackageDB:rest) | GlobalPackageDB `notElem` rest = return () checkPackageDbStackPre76 rest | GlobalPackageDB `notElem` rest = die $ "With current ghc versions the global package db is always used " ++ "and must be listed first. This ghc limitation is lifted in GHC 7.6," ++ "see http://hackage.haskell.org/trac/ghc/ticket/5977" checkPackageDbStackPre76 _ = die $ "If the global package db is specified, it must be " ++ "specified first and cannot be specified multiple times" -- GHC < 6.10 put "$topdir/include/mingw" in rts's installDirs. This -- breaks when you want to use a different gcc, so we need to filter -- it out. removeMingwIncludeDir :: InstalledPackageInfo -> InstalledPackageInfo removeMingwIncludeDir pkg = let ids = InstalledPackageInfo.includeDirs pkg ids' = filter (not . ("mingw" `isSuffixOf`)) ids in pkg { InstalledPackageInfo.includeDirs = ids' } -- | Get the packages from specific PackageDBs, not cumulative. -- getInstalledPackages' :: Verbosity -> [PackageDB] -> ProgramConfiguration -> IO [(PackageDB, [InstalledPackageInfo])] getInstalledPackages' verbosity packagedbs conf | ghcVersion >= Version [6,9] [] = sequence [ do pkgs <- HcPkg.dump (hcPkgInfo conf) verbosity packagedb return (packagedb, pkgs) | packagedb <- packagedbs ] where Just ghcProg = lookupProgram ghcProgram conf Just ghcVersion = programVersion ghcProg getInstalledPackages' verbosity packagedbs conf = do str <- rawSystemProgramStdoutConf verbosity ghcPkgProgram conf ["list"] let pkgFiles = [ init line | line <- lines str, last line == ':' ] dbFile packagedb = case (packagedb, pkgFiles) of (GlobalPackageDB, global:_) -> return $ Just global (UserPackageDB, _global:user:_) -> return $ Just user (UserPackageDB, _global:_) -> return $ Nothing (SpecificPackageDB specific, _) -> return $ Just specific _ -> die "cannot read ghc-pkg package listing" pkgFiles' <- mapM dbFile packagedbs sequence [ withFileContents file $ \content -> do pkgs <- readPackages file content return (db, pkgs) | (db , Just file) <- zip packagedbs pkgFiles' ] where -- Depending on the version of ghc we use a different type's Read -- instance to parse the package file and then convert. -- It's a bit yuck. But that's what we get for using Read/Show. readPackages | ghcVersion >= Version [6,4,2] [] = \file content -> case reads content of [(pkgs, _)] -> return (map IPI642.toCurrent pkgs) _ -> failToRead file -- We dropped support for 6.4.2 and earlier. | otherwise = \file _ -> failToRead file Just ghcProg = lookupProgram ghcProgram conf Just ghcVersion = programVersion ghcProg failToRead file = die $ "cannot read ghc package database " ++ file getInstalledPackagesMonitorFiles :: Verbosity -> Platform -> ProgramConfiguration -> [PackageDB] -> IO [FilePath] getInstalledPackagesMonitorFiles verbosity platform progdb = mapM getPackageDBPath where getPackageDBPath :: PackageDB -> IO FilePath getPackageDBPath GlobalPackageDB = selectMonitorFile =<< getGlobalPackageDB verbosity ghcProg getPackageDBPath UserPackageDB = selectMonitorFile =<< getUserPackageDB verbosity ghcProg platform getPackageDBPath (SpecificPackageDB path) = selectMonitorFile path -- GHC has old style file dbs, and new style directory dbs. -- Note that for dir style dbs, we only need to monitor the cache file, not -- the whole directory. The ghc program itself only reads the cache file -- so it's safe to only monitor this one file. selectMonitorFile path = do isFileStyle <- doesFileExist path if isFileStyle then return path else return (path "package.cache") Just ghcProg = lookupProgram ghcProgram progdb -- ----------------------------------------------------------------------------- -- Building -- | Build a library with GHC. -- buildLib, replLib :: Verbosity -> Cabal.Flag (Maybe Int) -> PackageDescription -> LocalBuildInfo -> Library -> ComponentLocalBuildInfo -> IO () buildLib = buildOrReplLib False replLib = buildOrReplLib True buildOrReplLib :: Bool -> Verbosity -> Cabal.Flag (Maybe Int) -> PackageDescription -> LocalBuildInfo -> Library -> ComponentLocalBuildInfo -> IO () buildOrReplLib forRepl verbosity numJobs pkg_descr lbi lib clbi = do let libName = componentUnitId clbi libTargetDir | componentUnitId clbi == localUnitId lbi = buildDir lbi | otherwise = buildDir lbi display libName whenVanillaLib forceVanilla = when (forceVanilla || withVanillaLib lbi) whenProfLib = when (withProfLib lbi) whenSharedLib forceShared = when (forceShared || withSharedLib lbi) whenGHCiLib = when (withGHCiLib lbi && withVanillaLib lbi) ifReplLib = when forRepl comp = compiler lbi ghcVersion = compilerVersion comp implInfo = getImplInfo comp platform@(Platform _hostArch hostOS) = hostPlatform lbi (ghcProg, _) <- requireProgram verbosity ghcProgram (withPrograms lbi) let runGhcProg = runGHC verbosity ghcProg comp platform libBi <- hackThreadedFlag verbosity comp (withProfLib lbi) (libBuildInfo lib) let isGhcDynamic = isDynamic comp dynamicTooSupported = supportsDynamicToo comp doingTH = EnableExtension TemplateHaskell `elem` allExtensions libBi forceVanillaLib = doingTH && not isGhcDynamic forceSharedLib = doingTH && isGhcDynamic -- TH always needs default libs, even when building for profiling -- Determine if program coverage should be enabled and if so, what -- '-hpcdir' should be. let isCoverageEnabled = fromFlag $ configCoverage $ configFlags lbi -- Component name. Not 'libName' because that has the "HS" prefix -- that GHC gives Haskell libraries. cname = display $ PD.package $ localPkgDescr lbi distPref = fromFlag $ configDistPref $ configFlags lbi hpcdir way | forRepl = Mon.mempty -- HPC is not supported in ghci | isCoverageEnabled = toFlag $ Hpc.mixDir distPref way cname | otherwise = mempty createDirectoryIfMissingVerbose verbosity True libTargetDir -- TODO: do we need to put hs-boot files into place for mutually recursive -- modules? let cObjs = map (`replaceExtension` objExtension) (cSources libBi) baseOpts = componentGhcOptions verbosity lbi libBi clbi libTargetDir vanillaOpts = baseOpts `mappend` mempty { ghcOptMode = toFlag GhcModeMake, ghcOptNumJobs = numJobs, ghcOptInputModules = toNubListR $ libModules lib, ghcOptHPCDir = hpcdir Hpc.Vanilla } profOpts = vanillaOpts `mappend` mempty { ghcOptProfilingMode = toFlag True, ghcOptProfilingAuto = Internal.profDetailLevelFlag True (withProfLibDetail lbi), ghcOptHiSuffix = toFlag "p_hi", ghcOptObjSuffix = toFlag "p_o", ghcOptExtra = toNubListR $ hcProfOptions GHC libBi, ghcOptHPCDir = hpcdir Hpc.Prof } sharedOpts = vanillaOpts `mappend` mempty { ghcOptDynLinkMode = toFlag GhcDynamicOnly, ghcOptFPic = toFlag True, ghcOptHiSuffix = toFlag "dyn_hi", ghcOptObjSuffix = toFlag "dyn_o", ghcOptExtra = toNubListR $ hcSharedOptions GHC libBi, ghcOptHPCDir = hpcdir Hpc.Dyn } linkerOpts = mempty { ghcOptLinkOptions = toNubListR $ PD.ldOptions libBi, ghcOptLinkLibs = toNubListR $ extraLibs libBi, ghcOptLinkLibPath = toNubListR $ extraLibDirs libBi, ghcOptLinkFrameworks = toNubListR $ PD.frameworks libBi, ghcOptLinkFrameworkDirs = toNubListR $ PD.extraFrameworkDirs libBi, ghcOptInputFiles = toNubListR [libTargetDir x | x <- cObjs] } replOpts = vanillaOpts { ghcOptExtra = overNubListR Internal.filterGhciFlags $ ghcOptExtra vanillaOpts, ghcOptNumJobs = mempty } `mappend` linkerOpts `mappend` mempty { ghcOptMode = toFlag GhcModeInteractive, ghcOptOptimisation = toFlag GhcNoOptimisation } vanillaSharedOpts = vanillaOpts `mappend` mempty { ghcOptDynLinkMode = toFlag GhcStaticAndDynamic, ghcOptDynHiSuffix = toFlag "dyn_hi", ghcOptDynObjSuffix = toFlag "dyn_o", ghcOptHPCDir = hpcdir Hpc.Dyn } unless (forRepl || null (libModules lib)) $ do let vanilla = whenVanillaLib forceVanillaLib (runGhcProg vanillaOpts) shared = whenSharedLib forceSharedLib (runGhcProg sharedOpts) useDynToo = dynamicTooSupported && (forceVanillaLib || withVanillaLib lbi) && (forceSharedLib || withSharedLib lbi) && null (hcSharedOptions GHC libBi) if useDynToo then do runGhcProg vanillaSharedOpts case (hpcdir Hpc.Dyn, hpcdir Hpc.Vanilla) of (Cabal.Flag dynDir, Cabal.Flag vanillaDir) -> -- When the vanilla and shared library builds are done -- in one pass, only one set of HPC module interfaces -- are generated. This set should suffice for both -- static and dynamically linked executables. We copy -- the modules interfaces so they are available under -- both ways. copyDirectoryRecursive verbosity dynDir vanillaDir _ -> return () else if isGhcDynamic then do shared; vanilla else do vanilla; shared whenProfLib (runGhcProg profOpts) -- build any C sources unless (null (cSources libBi)) $ do info verbosity "Building C Sources..." sequence_ [ do let baseCcOpts = Internal.componentCcGhcOptions verbosity implInfo lbi libBi clbi libTargetDir filename vanillaCcOpts = if isGhcDynamic -- Dynamic GHC requires C sources to be built -- with -fPIC for REPL to work. See #2207. then baseCcOpts { ghcOptFPic = toFlag True } else baseCcOpts profCcOpts = vanillaCcOpts `mappend` mempty { ghcOptProfilingMode = toFlag True, ghcOptObjSuffix = toFlag "p_o" } sharedCcOpts = vanillaCcOpts `mappend` mempty { ghcOptFPic = toFlag True, ghcOptDynLinkMode = toFlag GhcDynamicOnly, ghcOptObjSuffix = toFlag "dyn_o" } odir = fromFlag (ghcOptObjDir vanillaCcOpts) createDirectoryIfMissingVerbose verbosity True odir let runGhcProgIfNeeded ccOpts = do needsRecomp <- checkNeedsRecompilation filename ccOpts when needsRecomp $ runGhcProg ccOpts runGhcProgIfNeeded vanillaCcOpts unless forRepl $ whenSharedLib forceSharedLib (runGhcProgIfNeeded sharedCcOpts) unless forRepl $ whenProfLib (runGhcProgIfNeeded profCcOpts) | filename <- cSources libBi] -- TODO: problem here is we need the .c files built first, so we can load them -- with ghci, but .c files can depend on .h files generated by ghc by ffi -- exports. ifReplLib $ do when (null (libModules lib)) $ warn verbosity "No exposed modules" ifReplLib (runGhcProg replOpts) -- link: unless forRepl $ do info verbosity "Linking..." let cProfObjs = map (`replaceExtension` ("p_" ++ objExtension)) (cSources libBi) cSharedObjs = map (`replaceExtension` ("dyn_" ++ objExtension)) (cSources libBi) cid = compilerId (compiler lbi) vanillaLibFilePath = libTargetDir mkLibName libName profileLibFilePath = libTargetDir mkProfLibName libName sharedLibFilePath = libTargetDir mkSharedLibName cid libName ghciLibFilePath = libTargetDir Internal.mkGHCiLibName libName libInstallPath = libdir $ absoluteInstallDirs pkg_descr lbi NoCopyDest sharedLibInstallPath = libInstallPath mkSharedLibName cid libName stubObjs <- catMaybes <$> sequence [ findFileWithExtension [objExtension] [libTargetDir] (ModuleName.toFilePath x ++"_stub") | ghcVersion < Version [7,2] [] -- ghc-7.2+ does not make _stub.o files , x <- libModules lib ] stubProfObjs <- catMaybes <$> sequence [ findFileWithExtension ["p_" ++ objExtension] [libTargetDir] (ModuleName.toFilePath x ++"_stub") | ghcVersion < Version [7,2] [] -- ghc-7.2+ does not make _stub.o files , x <- libModules lib ] stubSharedObjs <- catMaybes <$> sequence [ findFileWithExtension ["dyn_" ++ objExtension] [libTargetDir] (ModuleName.toFilePath x ++"_stub") | ghcVersion < Version [7,2] [] -- ghc-7.2+ does not make _stub.o files , x <- libModules lib ] hObjs <- Internal.getHaskellObjects implInfo lib lbi libTargetDir objExtension True hProfObjs <- if withProfLib lbi then Internal.getHaskellObjects implInfo lib lbi libTargetDir ("p_" ++ objExtension) True else return [] hSharedObjs <- if withSharedLib lbi then Internal.getHaskellObjects implInfo lib lbi libTargetDir ("dyn_" ++ objExtension) False else return [] unless (null hObjs && null cObjs && null stubObjs) $ do rpaths <- getRPaths lbi clbi let staticObjectFiles = hObjs ++ map (libTargetDir ) cObjs ++ stubObjs profObjectFiles = hProfObjs ++ map (libTargetDir ) cProfObjs ++ stubProfObjs ghciObjFiles = hObjs ++ map (libTargetDir ) cObjs ++ stubObjs dynamicObjectFiles = hSharedObjs ++ map (libTargetDir ) cSharedObjs ++ stubSharedObjs -- After the relocation lib is created we invoke ghc -shared -- with the dependencies spelled out as -package arguments -- and ghc invokes the linker with the proper library paths ghcSharedLinkArgs = mempty { ghcOptShared = toFlag True, ghcOptDynLinkMode = toFlag GhcDynamicOnly, ghcOptInputFiles = toNubListR dynamicObjectFiles, ghcOptOutputFile = toFlag sharedLibFilePath, ghcOptExtra = toNubListR $ hcSharedOptions GHC libBi, -- For dynamic libs, Mac OS/X needs to know the install location -- at build time. This only applies to GHC < 7.8 - see the -- discussion in #1660. ghcOptDylibName = if hostOS == OSX && ghcVersion < Version [7,8] [] then toFlag sharedLibInstallPath else mempty, ghcOptHideAllPackages = toFlag True, ghcOptNoAutoLinkPackages = toFlag True, ghcOptPackageDBs = withPackageDB lbi, ghcOptPackages = toNubListR $ Internal.mkGhcOptPackages clbi , ghcOptLinkLibs = toNubListR $ extraLibs libBi, ghcOptLinkLibPath = toNubListR $ extraLibDirs libBi, ghcOptLinkFrameworks = toNubListR $ PD.frameworks libBi, ghcOptLinkFrameworkDirs = toNubListR $ PD.extraFrameworkDirs libBi, ghcOptRPaths = rpaths } info verbosity (show (ghcOptPackages ghcSharedLinkArgs)) whenVanillaLib False $ Ar.createArLibArchive verbosity lbi vanillaLibFilePath staticObjectFiles whenProfLib $ Ar.createArLibArchive verbosity lbi profileLibFilePath profObjectFiles whenGHCiLib $ do (ldProg, _) <- requireProgram verbosity ldProgram (withPrograms lbi) Ld.combineObjectFiles verbosity ldProg ghciLibFilePath ghciObjFiles whenSharedLib False $ runGhcProg ghcSharedLinkArgs -- | Start a REPL without loading any source files. startInterpreter :: Verbosity -> ProgramConfiguration -> Compiler -> Platform -> PackageDBStack -> IO () startInterpreter verbosity conf comp platform packageDBs = do let replOpts = mempty { ghcOptMode = toFlag GhcModeInteractive, ghcOptPackageDBs = packageDBs } checkPackageDbStack comp packageDBs (ghcProg, _) <- requireProgram verbosity ghcProgram conf runGHC verbosity ghcProg comp platform replOpts -- | Build an executable with GHC. -- buildExe, replExe :: Verbosity -> Cabal.Flag (Maybe Int) -> PackageDescription -> LocalBuildInfo -> Executable -> ComponentLocalBuildInfo -> IO () buildExe = buildOrReplExe False replExe = buildOrReplExe True buildOrReplExe :: Bool -> Verbosity -> Cabal.Flag (Maybe Int) -> PackageDescription -> LocalBuildInfo -> Executable -> ComponentLocalBuildInfo -> IO () buildOrReplExe forRepl verbosity numJobs _pkg_descr lbi exe@Executable { exeName = exeName', modulePath = modPath } clbi = do (ghcProg, _) <- requireProgram verbosity ghcProgram (withPrograms lbi) let comp = compiler lbi platform = hostPlatform lbi implInfo = getImplInfo comp runGhcProg = runGHC verbosity ghcProg comp platform exeBi <- hackThreadedFlag verbosity comp (withProfExe lbi) (buildInfo exe) -- exeNameReal, the name that GHC really uses (with .exe on Windows) let exeNameReal = exeName' <.> (if takeExtension exeName' /= ('.':exeExtension) then exeExtension else "") let targetDir = buildDir lbi exeName' let exeDir = targetDir (exeName' ++ "-tmp") createDirectoryIfMissingVerbose verbosity True targetDir createDirectoryIfMissingVerbose verbosity True exeDir -- TODO: do we need to put hs-boot files into place for mutually recursive -- modules? FIX: what about exeName.hi-boot? -- Determine if program coverage should be enabled and if so, what -- '-hpcdir' should be. let isCoverageEnabled = fromFlag $ configCoverage $ configFlags lbi distPref = fromFlag $ configDistPref $ configFlags lbi hpcdir way | forRepl = mempty -- HPC is not supported in ghci | isCoverageEnabled = toFlag $ Hpc.mixDir distPref way exeName' | otherwise = mempty -- build executables srcMainFile <- findFile (exeDir : hsSourceDirs exeBi) modPath rpaths <- getRPaths lbi clbi let isGhcDynamic = isDynamic comp dynamicTooSupported = supportsDynamicToo comp isHaskellMain = elem (takeExtension srcMainFile) [".hs", ".lhs"] cSrcs = cSources exeBi ++ [srcMainFile | not isHaskellMain] cObjs = map (`replaceExtension` objExtension) cSrcs baseOpts = (componentGhcOptions verbosity lbi exeBi clbi exeDir) `mappend` mempty { ghcOptMode = toFlag GhcModeMake, ghcOptInputFiles = toNubListR [ srcMainFile | isHaskellMain], ghcOptInputModules = toNubListR [ m | not isHaskellMain, m <- exeModules exe] } staticOpts = baseOpts `mappend` mempty { ghcOptDynLinkMode = toFlag GhcStaticOnly, ghcOptHPCDir = hpcdir Hpc.Vanilla } profOpts = baseOpts `mappend` mempty { ghcOptProfilingMode = toFlag True, ghcOptProfilingAuto = Internal.profDetailLevelFlag False (withProfExeDetail lbi), ghcOptHiSuffix = toFlag "p_hi", ghcOptObjSuffix = toFlag "p_o", ghcOptExtra = toNubListR (hcProfOptions GHC exeBi), ghcOptHPCDir = hpcdir Hpc.Prof } dynOpts = baseOpts `mappend` mempty { ghcOptDynLinkMode = toFlag GhcDynamicOnly, ghcOptHiSuffix = toFlag "dyn_hi", ghcOptObjSuffix = toFlag "dyn_o", ghcOptExtra = toNubListR $ hcSharedOptions GHC exeBi, ghcOptHPCDir = hpcdir Hpc.Dyn } dynTooOpts = staticOpts `mappend` mempty { ghcOptDynLinkMode = toFlag GhcStaticAndDynamic, ghcOptDynHiSuffix = toFlag "dyn_hi", ghcOptDynObjSuffix = toFlag "dyn_o", ghcOptHPCDir = hpcdir Hpc.Dyn } linkerOpts = mempty { ghcOptLinkOptions = toNubListR $ PD.ldOptions exeBi, ghcOptLinkLibs = toNubListR $ extraLibs exeBi, ghcOptLinkLibPath = toNubListR $ extraLibDirs exeBi, ghcOptLinkFrameworks = toNubListR $ PD.frameworks exeBi, ghcOptLinkFrameworkDirs = toNubListR $ PD.extraFrameworkDirs exeBi, ghcOptInputFiles = toNubListR [exeDir x | x <- cObjs] } dynLinkerOpts = mempty { ghcOptRPaths = rpaths } replOpts = baseOpts { ghcOptExtra = overNubListR Internal.filterGhciFlags (ghcOptExtra baseOpts) } -- For a normal compile we do separate invocations of ghc for -- compiling as for linking. But for repl we have to do just -- the one invocation, so that one has to include all the -- linker stuff too, like -l flags and any .o files from C -- files etc. `mappend` linkerOpts `mappend` mempty { ghcOptMode = toFlag GhcModeInteractive, ghcOptOptimisation = toFlag GhcNoOptimisation } commonOpts | withProfExe lbi = profOpts | withDynExe lbi = dynOpts | otherwise = staticOpts compileOpts | useDynToo = dynTooOpts | otherwise = commonOpts withStaticExe = (not $ withProfExe lbi) && (not $ withDynExe lbi) -- For building exe's that use TH with -prof or -dynamic we actually have -- to build twice, once without -prof/-dynamic and then again with -- -prof/-dynamic. This is because the code that TH needs to run at -- compile time needs to be the vanilla ABI so it can be loaded up and run -- by the compiler. -- With dynamic-by-default GHC the TH object files loaded at compile-time -- need to be .dyn_o instead of .o. doingTH = EnableExtension TemplateHaskell `elem` allExtensions exeBi -- Should we use -dynamic-too instead of compiling twice? useDynToo = dynamicTooSupported && isGhcDynamic && doingTH && withStaticExe && null (hcSharedOptions GHC exeBi) compileTHOpts | isGhcDynamic = dynOpts | otherwise = staticOpts compileForTH | forRepl = False | useDynToo = False | isGhcDynamic = doingTH && (withProfExe lbi || withStaticExe) | otherwise = doingTH && (withProfExe lbi || withDynExe lbi) linkOpts = commonOpts `mappend` linkerOpts `mappend` mempty { ghcOptLinkNoHsMain = toFlag (not isHaskellMain) } `mappend` (if withDynExe lbi then dynLinkerOpts else mempty) -- Build static/dynamic object files for TH, if needed. when compileForTH $ runGhcProg compileTHOpts { ghcOptNoLink = toFlag True , ghcOptNumJobs = numJobs } unless forRepl $ runGhcProg compileOpts { ghcOptNoLink = toFlag True , ghcOptNumJobs = numJobs } -- build any C sources unless (null cSrcs) $ do info verbosity "Building C Sources..." sequence_ [ do let opts = (Internal.componentCcGhcOptions verbosity implInfo lbi exeBi clbi exeDir filename) `mappend` mempty { ghcOptDynLinkMode = toFlag (if withDynExe lbi then GhcDynamicOnly else GhcStaticOnly), ghcOptProfilingMode = toFlag (withProfExe lbi) } odir = fromFlag (ghcOptObjDir opts) createDirectoryIfMissingVerbose verbosity True odir needsRecomp <- checkNeedsRecompilation filename opts when needsRecomp $ runGhcProg opts | filename <- cSrcs ] -- TODO: problem here is we need the .c files built first, so we can load them -- with ghci, but .c files can depend on .h files generated by ghc by ffi -- exports. when forRepl $ runGhcProg replOpts -- link: unless forRepl $ do info verbosity "Linking..." runGhcProg linkOpts { ghcOptOutputFile = toFlag (targetDir exeNameReal) } -- | Returns True if the modification date of the given source file is newer than -- the object file we last compiled for it, or if no object file exists yet. checkNeedsRecompilation :: FilePath -> GhcOptions -> IO Bool checkNeedsRecompilation filename opts = filename `moreRecentFile` oname where oname = getObjectFileName filename opts -- | Finds the object file name of the given source file getObjectFileName :: FilePath -> GhcOptions -> FilePath getObjectFileName filename opts = oname where odir = fromFlag (ghcOptObjDir opts) oext = fromFlagOrDefault "o" (ghcOptObjSuffix opts) oname = odir replaceExtension filename oext -- | Calculate the RPATHs for the component we are building. -- -- Calculates relative RPATHs when 'relocatable' is set. getRPaths :: LocalBuildInfo -> ComponentLocalBuildInfo -- ^ Component we are building -> IO (NubListR FilePath) getRPaths lbi clbi | supportRPaths hostOS = do libraryPaths <- depLibraryPaths False (relocatable lbi) lbi clbi let hostPref = case hostOS of OSX -> "@loader_path" _ -> "$ORIGIN" relPath p = if isRelative p then hostPref p else p rpaths = toNubListR (map relPath libraryPaths) return rpaths where (Platform _ hostOS) = hostPlatform lbi -- The list of RPath-supported operating systems below reflects the -- platforms on which Cabal's RPATH handling is tested. It does _NOT_ -- reflect whether the OS supports RPATH. -- E.g. when this comment was written, the *BSD operating systems were -- untested with regards to Cabal RPATH handling, and were hence set to -- 'False', while those operating systems themselves do support RPATH. supportRPaths Linux   = True supportRPaths Windows = False supportRPaths OSX   = True supportRPaths FreeBSD   = False supportRPaths OpenBSD   = False supportRPaths NetBSD   = False supportRPaths DragonFly = False supportRPaths Solaris = False supportRPaths AIX = False supportRPaths HPUX = False supportRPaths IRIX = False supportRPaths HaLVM = False supportRPaths IOS = False supportRPaths Android = False supportRPaths Ghcjs = False supportRPaths Hurd = False supportRPaths (OtherOS _) = False -- Do _not_ add a default case so that we get a warning here when a new OS -- is added. getRPaths _ _ = return mempty -- | Filter the "-threaded" flag when profiling as it does not -- work with ghc-6.8 and older. hackThreadedFlag :: Verbosity -> Compiler -> Bool -> BuildInfo -> IO BuildInfo hackThreadedFlag verbosity comp prof bi | not mustFilterThreaded = return bi | otherwise = do warn verbosity $ "The ghc flag '-threaded' is not compatible with " ++ "profiling in ghc-6.8 and older. It will be disabled." return bi { options = filterHcOptions (/= "-threaded") (options bi) } where mustFilterThreaded = prof && compilerVersion comp < Version [6, 10] [] && "-threaded" `elem` hcOptions GHC bi filterHcOptions p hcoptss = [ (hc, if hc == GHC then filter p opts else opts) | (hc, opts) <- hcoptss ] -- | Extracts a String representing a hash of the ABI of a built -- library. It can fail if the library has not yet been built. -- libAbiHash :: Verbosity -> PackageDescription -> LocalBuildInfo -> Library -> ComponentLocalBuildInfo -> IO String libAbiHash verbosity _pkg_descr lbi lib clbi = do libBi <- hackThreadedFlag verbosity (compiler lbi) (withProfLib lbi) (libBuildInfo lib) let comp = compiler lbi platform = hostPlatform lbi vanillaArgs = (componentGhcOptions verbosity lbi libBi clbi (buildDir lbi)) `mappend` mempty { ghcOptMode = toFlag GhcModeAbiHash, ghcOptInputModules = toNubListR $ exposedModules lib } sharedArgs = vanillaArgs `mappend` mempty { ghcOptDynLinkMode = toFlag GhcDynamicOnly, ghcOptFPic = toFlag True, ghcOptHiSuffix = toFlag "dyn_hi", ghcOptObjSuffix = toFlag "dyn_o", ghcOptExtra = toNubListR $ hcSharedOptions GHC libBi } profArgs = vanillaArgs `mappend` mempty { ghcOptProfilingMode = toFlag True, ghcOptProfilingAuto = Internal.profDetailLevelFlag True (withProfLibDetail lbi), ghcOptHiSuffix = toFlag "p_hi", ghcOptObjSuffix = toFlag "p_o", ghcOptExtra = toNubListR $ hcProfOptions GHC libBi } ghcArgs | withVanillaLib lbi = vanillaArgs | withSharedLib lbi = sharedArgs | withProfLib lbi = profArgs | otherwise = error "libAbiHash: Can't find an enabled library way" (ghcProg, _) <- requireProgram verbosity ghcProgram (withPrograms lbi) hash <- getProgramInvocationOutput verbosity (ghcInvocation ghcProg comp platform ghcArgs) return (takeWhile (not . isSpace) hash) componentGhcOptions :: Verbosity -> LocalBuildInfo -> BuildInfo -> ComponentLocalBuildInfo -> FilePath -> GhcOptions componentGhcOptions = Internal.componentGhcOptions componentCcGhcOptions :: Verbosity -> LocalBuildInfo -> BuildInfo -> ComponentLocalBuildInfo -> FilePath -> FilePath -> GhcOptions componentCcGhcOptions verbosity lbi = Internal.componentCcGhcOptions verbosity implInfo lbi where comp = compiler lbi implInfo = getImplInfo comp -- ----------------------------------------------------------------------------- -- Installing -- |Install executables for GHC. installExe :: Verbosity -> LocalBuildInfo -> InstallDirs FilePath -- ^Where to copy the files to -> FilePath -- ^Build location -> (FilePath, FilePath) -- ^Executable (prefix,suffix) -> PackageDescription -> Executable -> IO () installExe verbosity lbi installDirs buildPref (progprefix, progsuffix) _pkg exe = do let binDir = bindir installDirs createDirectoryIfMissingVerbose verbosity True binDir let exeFileName = exeName exe <.> exeExtension fixedExeBaseName = progprefix ++ exeName exe ++ progsuffix installBinary dest = do installExecutableFile verbosity (buildPref exeName exe exeFileName) (dest <.> exeExtension) when (stripExes lbi) $ Strip.stripExe verbosity (hostPlatform lbi) (withPrograms lbi) (dest <.> exeExtension) installBinary (binDir fixedExeBaseName) -- |Install for ghc, .hi, .a and, if --with-ghci given, .o installLib :: Verbosity -> LocalBuildInfo -> FilePath -- ^install location -> FilePath -- ^install location for dynamic libraries -> FilePath -- ^Build location -> PackageDescription -> Library -> ComponentLocalBuildInfo -> IO () installLib verbosity lbi targetDir dynlibTargetDir builtDir _pkg lib clbi = do -- copy .hi files over: whenVanilla $ copyModuleFiles "hi" whenProf $ copyModuleFiles "p_hi" whenShared $ copyModuleFiles "dyn_hi" -- copy the built library files over: whenVanilla $ installOrdinary builtDir targetDir vanillaLibName whenProf $ installOrdinary builtDir targetDir profileLibName whenGHCi $ installOrdinary builtDir targetDir ghciLibName whenShared $ installShared builtDir dynlibTargetDir sharedLibName where install isShared srcDir dstDir name = do let src = srcDir name dst = dstDir name createDirectoryIfMissingVerbose verbosity True dstDir if isShared then installExecutableFile verbosity src dst else installOrdinaryFile verbosity src dst when (stripLibs lbi) $ Strip.stripLib verbosity (hostPlatform lbi) (withPrograms lbi) dst installOrdinary = install False installShared = install True copyModuleFiles ext = findModuleFiles [builtDir] [ext] (libModules lib) >>= installOrdinaryFiles verbosity targetDir cid = compilerId (compiler lbi) libName = componentUnitId clbi vanillaLibName = mkLibName libName profileLibName = mkProfLibName libName ghciLibName = Internal.mkGHCiLibName libName sharedLibName = (mkSharedLibName cid) libName hasLib = not $ null (libModules lib) && null (cSources (libBuildInfo lib)) whenVanilla = when (hasLib && withVanillaLib lbi) whenProf = when (hasLib && withProfLib lbi) whenGHCi = when (hasLib && withGHCiLib lbi) whenShared = when (hasLib && withSharedLib lbi) -- ----------------------------------------------------------------------------- -- Registering hcPkgInfo :: ProgramConfiguration -> HcPkg.HcPkgInfo hcPkgInfo conf = HcPkg.HcPkgInfo { HcPkg.hcPkgProgram = ghcPkgProg , HcPkg.noPkgDbStack = v < [6,9] , HcPkg.noVerboseFlag = v < [6,11] , HcPkg.flagPackageConf = v < [7,5] , HcPkg.supportsDirDbs = v >= [6,8] , HcPkg.requiresDirDbs = v >= [7,10] , HcPkg.nativeMultiInstance = v >= [7,10] , HcPkg.recacheMultiInstance = v >= [6,12] } where v = versionBranch ver Just ghcPkgProg = lookupProgram ghcPkgProgram conf Just ver = programVersion ghcPkgProg registerPackage :: Verbosity -> ProgramConfiguration -> Bool -> PackageDBStack -> InstalledPackageInfo -> IO () registerPackage verbosity progdb multiInstance packageDbs installedPkgInfo | multiInstance = HcPkg.registerMultiInstance (hcPkgInfo progdb) verbosity packageDbs installedPkgInfo | otherwise = HcPkg.reregister (hcPkgInfo progdb) verbosity packageDbs (Right installedPkgInfo) pkgRoot :: Verbosity -> LocalBuildInfo -> PackageDB -> IO FilePath pkgRoot verbosity lbi = pkgRoot' where pkgRoot' GlobalPackageDB = let Just ghcProg = lookupProgram ghcProgram (withPrograms lbi) in fmap takeDirectory (getGlobalPackageDB verbosity ghcProg) pkgRoot' UserPackageDB = do appDir <- getAppUserDataDirectory "ghc" let ver = compilerVersion (compiler lbi) subdir = System.Info.arch ++ '-':System.Info.os ++ '-':showVersion ver rootDir = appDir subdir -- We must create the root directory for the user package database if it -- does not yet exists. Otherwise '${pkgroot}' will resolve to a -- directory at the time of 'ghc-pkg register', and registration will -- fail. createDirectoryIfMissing True rootDir return rootDir pkgRoot' (SpecificPackageDB fp) = return (takeDirectory fp) -- ----------------------------------------------------------------------------- -- Utils isDynamic :: Compiler -> Bool isDynamic = Internal.ghcLookupProperty "GHC Dynamic" supportsDynamicToo :: Compiler -> Bool supportsDynamicToo = Internal.ghcLookupProperty "Support dynamic-too"