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GHC.hs
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GHC.hs
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-----------------------------------------------------------------------------
-- |
-- 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, getPackageDBContents,
buildLib, buildExe,
replLib, replExe,
startInterpreter,
installLib, installExe,
libAbiHash,
initPackageDB,
invokeHcPkg,
registerPackage,
componentGhcOptions,
ghcLibDir,
ghcDynamic,
) where
import qualified Distribution.Simple.GHC.IPI641 as IPI641
import qualified Distribution.Simple.GHC.IPI642 as IPI642
import Distribution.PackageDescription as PD
( PackageDescription(..), BuildInfo(..), Executable(..)
, Library(..), libModules, exeModules, hcOptions
, usedExtensions, allExtensions )
import Distribution.InstalledPackageInfo
( InstalledPackageInfo )
import qualified Distribution.InstalledPackageInfo as InstalledPackageInfo
( InstalledPackageInfo_(..) )
import Distribution.Simple.PackageIndex (PackageIndex)
import qualified Distribution.Simple.PackageIndex as PackageIndex
import Distribution.Simple.LocalBuildInfo
( LocalBuildInfo(..), ComponentLocalBuildInfo(..)
, LibraryName(..), absoluteInstallDirs )
import Distribution.Simple.InstallDirs hiding ( absoluteInstallDirs )
import Distribution.Simple.BuildPaths
import Distribution.Simple.Utils
import Distribution.Package
( Package(..), PackageName(..) )
import qualified Distribution.ModuleName as ModuleName
import Distribution.Simple.Program
( Program(..), ConfiguredProgram(..), ProgramConfiguration
, ProgramLocation(..), ProgramSearchPath, ProgramSearchPathEntry(..)
, rawSystemProgram
, rawSystemProgramStdout, rawSystemProgramStdoutConf
, getProgramOutput, getProgramInvocationOutput, suppressOverrideArgs
, requireProgramVersion, requireProgram
, userMaybeSpecifyPath, programPath, lookupProgram, addKnownProgram
, ghcProgram, ghcPkgProgram, hsc2hsProgram
, arProgram, ldProgram
, gccProgram, stripProgram )
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
( toFlag, fromFlag, fromFlagOrDefault )
import qualified Distribution.Simple.Setup as Cabal
( Flag )
import Distribution.Simple.Compiler
( CompilerFlavor(..), CompilerId(..), Compiler(..), compilerVersion
, OptimisationLevel(..), PackageDB(..), PackageDBStack
, Flag )
import Distribution.Version
( Version(..), anyVersion, orLaterVersion )
import Distribution.System
( Platform(..), OS(..), buildOS, platformFromTriple )
import Distribution.Verbosity
import Distribution.Text
( display, simpleParse )
import Language.Haskell.Extension (Language(..), Extension(..)
,KnownExtension(..))
import Control.Monad ( unless, when )
import Data.Char ( isSpace )
import Data.List
import qualified Data.Map as M ( Map, fromList, lookup )
import Data.Maybe ( catMaybes, fromMaybe, maybeToList )
import Data.Monoid ( Monoid(..) )
import System.Directory
( getDirectoryContents, doesFileExist, getTemporaryDirectory )
import System.FilePath ( (</>), (<.>), takeExtension,
takeDirectory, replaceExtension,
splitExtension )
import System.IO (hClose, hPutStrLn)
import System.Environment (getEnv)
import Distribution.Compat.Exception (catchExit, catchIO)
-- -----------------------------------------------------------------------------
-- 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)
-- 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 program.
let hsc2hsProgram' = hsc2hsProgram {
programFindLocation = guessHsc2hsFromGhcPath ghcProg
}
conf3 = addKnownProgram hsc2hsProgram' conf2
languages <- getLanguages verbosity ghcProg
extensions <- getExtensions verbosity ghcProg
ghcInfo <- getGhcInfo verbosity ghcProg
let ghcInfoMap = M.fromList ghcInfo
let comp = Compiler {
compilerId = CompilerId GHC ghcVersion,
compilerLanguages = languages,
compilerExtensions = extensions,
compilerProperties = ghcInfoMap
}
compPlatform = targetPlatform ghcInfo
conf4 = configureToolchain ghcProg ghcInfoMap conf3 -- configure gcc and ld
return (comp, compPlatform, conf4)
targetPlatform :: [(String, String)] -> Maybe Platform
targetPlatform ghcInfo = platformFromTriple =<< lookup "Target platform" ghcInfo
-- | 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)
guessToolFromGhcPath tool ghcProg verbosity searchpath
= do let toolname = programName tool
path = programPath ghcProg
dir = takeDirectory path
versionSuffix = takeVersionSuffix (dropExeExtension path)
guessNormal = dir </> toolname <.> exeExtension
guessGhcVersioned = dir </> (toolname ++ "-ghc" ++ versionSuffix)
<.> exeExtension
guessVersioned = dir </> (toolname ++ versionSuffix)
<.> exeExtension
guesses | null versionSuffix = [guessNormal]
| otherwise = [guessGhcVersioned,
guessVersioned,
guessNormal]
info verbosity $ "looking for tool " ++ toolname
++ " near compiler in " ++ dir
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
return (Just fp)
where takeVersionSuffix :: FilePath -> String
takeVersionSuffix = reverse . takeWhile (`elem ` "0123456789.-") .
reverse
dropExeExtension :: FilePath -> FilePath
dropExeExtension filepath =
case splitExtension filepath of
(filepath', extension) | extension == exeExtension -> filepath'
| otherwise -> filepath
-- | 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)
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)
guessHsc2hsFromGhcPath = guessToolFromGhcPath hsc2hsProgram
-- | Adjust the way we find and configure gcc and ld
--
configureToolchain :: ConfiguredProgram -> M.Map String String
-> ProgramConfiguration
-> ProgramConfiguration
configureToolchain ghcProg ghcInfo =
addKnownProgram gccProgram {
programFindLocation = findProg gccProgram extraGccPath,
programPostConf = configureGcc
}
. addKnownProgram ldProgram {
programFindLocation = findProg ldProgram extraLdPath,
programPostConf = configureLd
}
. addKnownProgram arProgram {
programFindLocation = findProg arProgram extraArPath
}
. addKnownProgram stripProgram {
programFindLocation = findProg stripProgram extraStripPath
}
where
Just ghcVersion = programVersion ghcProg
compilerDir = takeDirectory (programPath ghcProg)
baseDir = takeDirectory compilerDir
mingwBinDir = baseDir </> "mingw" </> "bin"
libDir = baseDir </> "gcc-lib"
includeDir = baseDir </> "include" </> "mingw"
isWindows = case buildOS of Windows -> True; _ -> False
binPrefix = ""
mkExtraPath :: Maybe FilePath -> FilePath -> [FilePath]
mkExtraPath mbPath mingwPath | isWindows = mbDir ++ [mingwPath]
| otherwise = mbDir
where
mbDir = maybeToList . fmap takeDirectory $ mbPath
extraGccPath = mkExtraPath mbGccLocation windowsExtraGccDir
extraLdPath = mkExtraPath mbLdLocation windowsExtraLdDir
extraArPath = mkExtraPath mbArLocation windowsExtraArDir
extraStripPath = mkExtraPath mbStripLocation windowsExtraStripDir
-- on Windows finding and configuring ghc's gcc & binutils is a bit special
windowsExtraGccDir
| ghcVersion >= Version [6,12] [] = mingwBinDir </> binPrefix
| otherwise = baseDir
windowsExtraLdDir
| ghcVersion >= Version [6,12] [] = mingwBinDir </> binPrefix
| otherwise = libDir
windowsExtraArDir
| ghcVersion >= Version [6,12] [] = mingwBinDir </> binPrefix
| otherwise = libDir
windowsExtraStripDir
| ghcVersion >= Version [6,12] [] = mingwBinDir </> binPrefix
| otherwise = libDir
findProg :: Program -> [FilePath]
-> Verbosity -> ProgramSearchPath -> IO (Maybe FilePath)
findProg prog extraPath v searchpath =
programFindLocation prog v searchpath'
where
searchpath' = (map ProgramSearchPathDir extraPath) ++ searchpath
-- Read tool locations from the 'ghc --info' output. Useful when
-- cross-compiling.
mbGccLocation = M.lookup "C compiler command" ghcInfo
mbLdLocation = M.lookup "ld command" ghcInfo
mbArLocation = M.lookup "ar command" ghcInfo
mbStripLocation = M.lookup "strip command" ghcInfo
ccFlags = getFlags "C compiler flags"
gccLinkerFlags = getFlags "Gcc Linker flags"
ldLinkerFlags = getFlags "Ld Linker flags"
getFlags key = case M.lookup key ghcInfo of
Nothing -> []
Just flags ->
case reads flags of
[(args, "")] -> args
_ -> [] -- XXX Should should be an error really
configureGcc :: Verbosity -> ConfiguredProgram -> IO ConfiguredProgram
configureGcc v gccProg = do
gccProg' <- configureGcc' v gccProg
return gccProg' {
programDefaultArgs = programDefaultArgs gccProg'
++ ccFlags ++ gccLinkerFlags
}
configureGcc' :: Verbosity -> ConfiguredProgram -> IO ConfiguredProgram
configureGcc'
| isWindows = \_ gccProg -> case programLocation gccProg of
-- if it's found on system then it means we're using the result
-- of programFindLocation above rather than a user-supplied path
-- Pre GHC 6.12, that meant we should add these flags to tell
-- ghc's gcc where it lives and thus where gcc can find its
-- various files:
FoundOnSystem {}
| ghcVersion < Version [6,11] [] ->
return gccProg { programDefaultArgs = ["-B" ++ libDir,
"-I" ++ includeDir] }
_ -> return gccProg
| otherwise = \_ gccProg -> return gccProg
configureLd :: Verbosity -> ConfiguredProgram -> IO ConfiguredProgram
configureLd v ldProg = do
ldProg' <- configureLd' v ldProg
return ldProg' {
programDefaultArgs = programDefaultArgs ldProg' ++ ldLinkerFlags
}
-- we need to find out if ld supports the -x flag
configureLd' :: Verbosity -> ConfiguredProgram -> IO ConfiguredProgram
configureLd' verbosity ldProg = do
tempDir <- getTemporaryDirectory
ldx <- withTempFile tempDir ".c" $ \testcfile testchnd ->
withTempFile tempDir ".o" $ \testofile testohnd -> do
hPutStrLn testchnd "int foo() { return 0; }"
hClose testchnd; hClose testohnd
rawSystemProgram verbosity ghcProg ["-c", testcfile,
"-o", testofile]
withTempFile tempDir ".o" $ \testofile' testohnd' ->
do
hClose testohnd'
_ <- rawSystemProgramStdout verbosity ldProg
["-x", "-r", testofile, "-o", testofile']
return True
`catchIO` (\_ -> return False)
`catchExit` (\_ -> return False)
if ldx
then return ldProg { programDefaultArgs = ["-x"] }
else return ldProg
getLanguages :: Verbosity -> ConfiguredProgram -> IO [(Language, Flag)]
getLanguages _ ghcProg
-- TODO: should be using --supported-languages rather than hard coding
| ghcVersion >= Version [7] [] = return [(Haskell98, "-XHaskell98")
,(Haskell2010, "-XHaskell2010")]
| otherwise = return [(Haskell98, "")]
where
Just ghcVersion = programVersion ghcProg
getGhcInfo :: Verbosity -> ConfiguredProgram -> IO [(String, String)]
getGhcInfo verbosity ghcProg =
case programVersion ghcProg of
Just ghcVersion
| ghcVersion >= Version [6,7] [] ->
do xs <- getProgramOutput verbosity (suppressOverrideArgs ghcProg)
["--info"]
case reads xs of
[(i, ss)]
| all isSpace ss ->
return i
_ ->
die "Can't parse --info output of GHC"
_ ->
return []
getExtensions :: Verbosity -> ConfiguredProgram -> IO [(Extension, Flag)]
getExtensions verbosity ghcProg
| ghcVersion >= Version [6,7] [] = do
str <- getProgramOutput verbosity (suppressOverrideArgs ghcProg)
["--supported-languages"]
let extStrs = if ghcVersion >= Version [7] []
then lines str
else -- Older GHCs only gave us either Foo or NoFoo,
-- so we have to work out the other one ourselves
[ extStr''
| extStr <- lines str
, let extStr' = case extStr of
'N' : 'o' : xs -> xs
_ -> "No" ++ extStr
, extStr'' <- [extStr, extStr']
]
let extensions0 = [ (ext, "-X" ++ display ext)
| Just ext <- map simpleParse extStrs ]
extensions1 = if ghcVersion >= Version [6,8] [] &&
ghcVersion < Version [6,10] []
then -- ghc-6.8 introduced RecordPuns however it
-- should have been NamedFieldPuns. We now
-- encourage packages to use NamedFieldPuns
-- so for compatability we fake support for
-- it in ghc-6.8 by making it an alias for
-- the old RecordPuns extension.
(EnableExtension NamedFieldPuns, "-XRecordPuns") :
(DisableExtension NamedFieldPuns, "-XNoRecordPuns") :
extensions0
else extensions0
extensions2 = if ghcVersion < Version [7,1] []
then -- ghc-7.2 split NondecreasingIndentation off
-- into a proper extension. Before that it
-- was always on.
(EnableExtension NondecreasingIndentation, "") :
(DisableExtension NondecreasingIndentation, "") :
extensions1
else extensions1
return extensions2
| otherwise = return oldLanguageExtensions
where
Just ghcVersion = programVersion ghcProg
-- | For GHC 6.6.x and earlier, the mapping from supported extensions to flags
oldLanguageExtensions :: [(Extension, Flag)]
oldLanguageExtensions =
let doFlag (f, (enable, disable)) = [(EnableExtension f, enable),
(DisableExtension f, disable)]
fglasgowExts = ("-fglasgow-exts",
"") -- This is wrong, but we don't want to turn
-- all the extensions off when asked to just
-- turn one off
fFlag flag = ("-f" ++ flag, "-fno-" ++ flag)
in concatMap doFlag
[(OverlappingInstances , fFlag "allow-overlapping-instances")
,(TypeSynonymInstances , fglasgowExts)
,(TemplateHaskell , fFlag "th")
,(ForeignFunctionInterface , fFlag "ffi")
,(MonomorphismRestriction , fFlag "monomorphism-restriction")
,(MonoPatBinds , fFlag "mono-pat-binds")
,(UndecidableInstances , fFlag "allow-undecidable-instances")
,(IncoherentInstances , fFlag "allow-incoherent-instances")
,(Arrows , fFlag "arrows")
,(Generics , fFlag "generics")
,(ImplicitPrelude , fFlag "implicit-prelude")
,(ImplicitParams , fFlag "implicit-params")
,(CPP , ("-cpp", ""{- Wrong -}))
,(BangPatterns , fFlag "bang-patterns")
,(KindSignatures , fglasgowExts)
,(RecursiveDo , fglasgowExts)
,(ParallelListComp , fglasgowExts)
,(MultiParamTypeClasses , fglasgowExts)
,(FunctionalDependencies , fglasgowExts)
,(Rank2Types , fglasgowExts)
,(RankNTypes , fglasgowExts)
,(PolymorphicComponents , fglasgowExts)
,(ExistentialQuantification , fglasgowExts)
,(ScopedTypeVariables , fFlag "scoped-type-variables")
,(FlexibleContexts , fglasgowExts)
,(FlexibleInstances , fglasgowExts)
,(EmptyDataDecls , fglasgowExts)
,(PatternGuards , fglasgowExts)
,(GeneralizedNewtypeDeriving , fglasgowExts)
,(MagicHash , fglasgowExts)
,(UnicodeSyntax , fglasgowExts)
,(PatternSignatures , fglasgowExts)
,(UnliftedFFITypes , fglasgowExts)
,(LiberalTypeSynonyms , fglasgowExts)
,(TypeOperators , fglasgowExts)
,(GADTs , fglasgowExts)
,(RelaxedPolyRec , fglasgowExts)
,(ExtendedDefaultRules , fFlag "extended-default-rules")
,(UnboxedTuples , fglasgowExts)
,(DeriveDataTypeable , fglasgowExts)
,(ConstrainedClassMethods , fglasgowExts)
]
-- | Given a single package DB, return all installed packages.
getPackageDBContents :: Verbosity -> PackageDB -> ProgramConfiguration
-> IO PackageIndex
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 -> PackageDBStack -> ProgramConfiguration
-> IO PackageIndex
getInstalledPackages verbosity packagedbs conf = do
checkPackageDbEnvVar
checkPackageDbStack 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 testsuite 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 PackageIndex
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 <- ghcLibDir' verbosity ghcProg
let indices = [ PackageIndex.fromList (map (substTopDir topDir) pkgs)
| (_, pkgs) <- pkgss ]
return $! (mconcat indices)
where
Just ghcProg = lookupProgram ghcProgram conf
ghcLibDir :: Verbosity -> LocalBuildInfo -> IO FilePath
ghcLibDir verbosity lbi =
(reverse . dropWhile isSpace . reverse) `fmap`
rawSystemProgramStdoutConf verbosity ghcProgram
(withPrograms lbi) ["--print-libdir"]
ghcLibDir' :: Verbosity -> ConfiguredProgram -> IO FilePath
ghcLibDir' verbosity ghcProg =
(reverse . dropWhile isSpace . reverse) `fmap`
rawSystemProgramStdout verbosity ghcProg ["--print-libdir"]
-- Cabal does not use the environment variable GHC_PACKAGE_PATH; let users
-- know that this is the case. See ticket #335. Simply ignoring it is not a
-- good idea, since then ghc and cabal are looking at different sets of
-- package dbs and chaos is likely to ensue.
checkPackageDbEnvVar :: IO ()
checkPackageDbEnvVar = do
hasGPP <- (getEnv "GHC_PACKAGE_PATH" >> return True)
`catchIO` (\_ -> return False)
when hasGPP $
die $ "Use of GHC's environment variable GHC_PACKAGE_PATH is "
++ "incompatible with Cabal. Use the flag --package-db to specify a "
++ "package database (it can be used multiple times)."
checkPackageDbStack :: PackageDBStack -> IO ()
checkPackageDbStack (GlobalPackageDB:rest)
| GlobalPackageDB `notElem` rest = return ()
checkPackageDbStack rest
| GlobalPackageDB `notElem` rest =
die $ "With current ghc versions the global package db is always used "
++ "and must be listed first. This ghc limitation may be lifted in "
++ "future, see http://hackage.haskell.org/trac/ghc/ticket/5977"
checkPackageDbStack _ =
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 verbosity ghcPkgProg packagedb
return (packagedb, pkgs)
| packagedb <- packagedbs ]
where
Just ghcPkgProg = lookupProgram ghcPkgProgram conf
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
| otherwise
= \file content -> case reads content of
[(pkgs, _)] -> return (map IPI641.toCurrent pkgs)
_ -> failToRead file
Just ghcProg = lookupProgram ghcProgram conf
Just ghcVersion = programVersion ghcProg
failToRead file = die $ "cannot read ghc package database " ++ file
substTopDir :: FilePath -> InstalledPackageInfo -> InstalledPackageInfo
substTopDir topDir ipo
= ipo {
InstalledPackageInfo.importDirs
= map f (InstalledPackageInfo.importDirs ipo),
InstalledPackageInfo.libraryDirs
= map f (InstalledPackageInfo.libraryDirs ipo),
InstalledPackageInfo.includeDirs
= map f (InstalledPackageInfo.includeDirs ipo),
InstalledPackageInfo.frameworkDirs
= map f (InstalledPackageInfo.frameworkDirs ipo),
InstalledPackageInfo.haddockInterfaces
= map f (InstalledPackageInfo.haddockInterfaces ipo),
InstalledPackageInfo.haddockHTMLs
= map f (InstalledPackageInfo.haddockHTMLs ipo)
}
where f ('$':'t':'o':'p':'d':'i':'r':rest) = topDir ++ rest
f x = x
-- -----------------------------------------------------------------------------
-- 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 numJobsFlag pkg_descr lbi lib clbi = do
libName <- case componentLibraries clbi of
[libName] -> return libName
[] -> die "No library name found when building library"
_ -> die "Multiple library names found when building library"
let libTargetDir = buildDir lbi
numJobs = fromMaybe 1 $ fromFlagOrDefault Nothing numJobsFlag
pkgid = packageId pkg_descr
whenVanillaLib forceVanilla =
when (not forRepl && (forceVanilla || withVanillaLib lbi))
whenProfLib = when (not forRepl && withProfLib lbi)
whenSharedLib forceShared =
when (not forRepl && (forceShared || withSharedLib lbi))
whenGHCiLib = when (not forRepl && withGHCiLib lbi && withVanillaLib lbi)
ifReplLib = when forRepl
comp = compiler lbi
ghcVersion = compilerVersion comp
(Platform _hostArch hostOS) = hostPlatform lbi
(ghcProg, _) <- requireProgram verbosity ghcProgram (withPrograms lbi)
let runGhcProg = runGHC verbosity ghcProg comp
libBi <- hackThreadedFlag verbosity
comp (withProfLib lbi) (libBuildInfo lib)
let isGhcDynamic = ghcDynamic comp
dynamicTooSupported = ghcSupportsDynamicToo comp
doingTH = EnableExtension TemplateHaskell `elem` allExtensions libBi
forceVanillaLib = doingTH && not isGhcDynamic
forceSharedLib = doingTH && isGhcDynamic
-- TH always needs default libs, even when building for profiling
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 = toFlag numJobs,
ghcOptPackageName = toFlag pkgid,
ghcOptInputModules = libModules lib
}
profOpts = vanillaOpts `mappend` mempty {
ghcOptProfilingMode = toFlag True,
ghcOptHiSuffix = toFlag "p_hi",
ghcOptObjSuffix = toFlag "p_o",
ghcOptExtra = ghcProfOptions libBi
}
sharedOpts = vanillaOpts `mappend` mempty {
ghcOptDynLinkMode = toFlag GhcDynamicOnly,
ghcOptFPic = toFlag True,
ghcOptHiSuffix = toFlag "dyn_hi",
ghcOptObjSuffix = toFlag "dyn_o",
ghcOptExtra = ghcSharedOptions libBi
}
linkerOpts = mempty {
ghcOptLinkOptions = PD.ldOptions libBi,
ghcOptLinkLibs = extraLibs libBi,
ghcOptLinkLibPath = extraLibDirs libBi,
ghcOptLinkFrameworks = PD.frameworks libBi,
ghcOptInputFiles = [libTargetDir </> x | x <- cObjs]
}
replOpts = vanillaOpts {
ghcOptExtra = 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"
}
unless (null (libModules lib)) $
do let vanilla = whenVanillaLib forceVanillaLib (runGhcProg vanillaOpts)
shared = whenSharedLib forceSharedLib (runGhcProg sharedOpts)
useDynToo = dynamicTooSupported &&
(forceVanillaLib || withVanillaLib lbi) &&
(forceSharedLib || withSharedLib lbi) &&
null (ghcSharedOptions libBi)
if useDynToo
then runGhcProg vanillaSharedOpts
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 vanillaCcOpts = (componentCcGhcOptions verbosity lbi
libBi clbi libTargetDir filename)
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
runGhcProg vanillaCcOpts
whenSharedLib forceSharedLib (runGhcProg sharedCcOpts)
whenProfLib (runGhcProg 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.
unless (null (libModules lib)) $
ifReplLib (runGhcProg replOpts)
-- link:
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 </> mkGHCiLibName libName
libInstallPath = libdir $ absoluteInstallDirs pkg_descr lbi NoCopyDest
sharedLibInstallPath = libInstallPath </> mkSharedLibName cid libName
stubObjs <- fmap 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 <- fmap 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 <- fmap 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 <- getHaskellObjects lib lbi
libTargetDir objExtension True
hProfObjs <-
if (withProfLib lbi)
then getHaskellObjects lib lbi
libTargetDir ("p_" ++ objExtension) True
else return []
hSharedObjs <-
if (withSharedLib lbi)
then getHaskellObjects lib lbi
libTargetDir ("dyn_" ++ objExtension) False
else return []
unless (null hObjs && null cObjs && null stubObjs) $ do
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 = dynamicObjectFiles,
ghcOptOutputFile = toFlag sharedLibFilePath,
-- 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,
ghcOptPackageName = toFlag pkgid,
ghcOptNoAutoLinkPackages = toFlag True,
ghcOptPackageDBs = withPackageDB lbi,
ghcOptPackages = componentPackageDeps clbi,
ghcOptLinkLibs = extraLibs libBi,
ghcOptLinkLibPath = extraLibDirs libBi
}
whenVanillaLib False $ do
Ar.createArLibArchive verbosity lbi vanillaLibFilePath staticObjectFiles
whenProfLib $ do
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
-> PackageDBStack -> IO ()
startInterpreter verbosity conf comp packageDBs = do
let replOpts = mempty {
ghcOptMode = toFlag GhcModeInteractive,
ghcOptPackageDBs = packageDBs
}
checkPackageDbStack packageDBs
(ghcProg, _) <- requireProgram verbosity ghcProgram conf
runGHC verbosity ghcProg comp 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 numJobsFlag _pkg_descr lbi
exe@Executable { exeName = exeName', modulePath = modPath } clbi = do
(ghcProg, _) <- requireProgram verbosity ghcProgram (withPrograms lbi)
let comp = compiler lbi
numJobs = fromMaybe 1 $
fromFlagOrDefault Nothing numJobsFlag
runGhcProg = runGHC verbosity ghcProg comp
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?
-- build executables
srcMainFile <- findFile (exeDir : hsSourceDirs exeBi) modPath
let isGhcDynamic = ghcDynamic comp
dynamicTooSupported = ghcSupportsDynamicToo 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 =
[ srcMainFile | isHaskellMain],
ghcOptInputModules =
[ m | not isHaskellMain, m <- exeModules exe]
}
staticOpts = baseOpts `mappend` mempty {
ghcOptDynLinkMode = toFlag GhcStaticOnly
}
profOpts = baseOpts `mappend` mempty {
ghcOptProfilingMode = toFlag True,
ghcOptHiSuffix = toFlag "p_hi",
ghcOptObjSuffix = toFlag "p_o",
ghcOptExtra = ghcProfOptions exeBi
}
dynOpts = baseOpts `mappend` mempty {
ghcOptDynLinkMode = toFlag GhcDynamicOnly,
ghcOptHiSuffix = toFlag "dyn_hi",
ghcOptObjSuffix = toFlag "dyn_o",
ghcOptExtra = ghcSharedOptions exeBi
}
dynTooOpts = staticOpts `mappend` mempty {
ghcOptDynLinkMode = toFlag GhcStaticAndDynamic,
ghcOptDynHiSuffix = toFlag "dyn_hi",
ghcOptDynObjSuffix = toFlag "dyn_o"
}
linkerOpts = mempty {
ghcOptLinkOptions = PD.ldOptions exeBi,
ghcOptLinkLibs = extraLibs exeBi,
ghcOptLinkLibPath = extraLibDirs exeBi,
ghcOptLinkFrameworks = PD.frameworks exeBi,
ghcOptInputFiles = [exeDir </> x | x <- cObjs]
}
replOpts = baseOpts {
ghcOptExtra = 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)