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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
--
-- 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.
{- Copyright (c) 2003-2005, Isaac Jones
All rights reserved.
Redistribution and use in source and binary forms, with or without
modiication, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Isaac Jones nor the names of other
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}
module Distribution.Simple.GHC (
configure, getInstalledPackages,
buildLib, buildExe,
installLib, installExe,
libAbiHash,
ghcOptions,
ghcVerbosityOptions
) where
import qualified Distribution.Simple.GHC.IPI641 as IPI641
import qualified Distribution.Simple.GHC.IPI642 as IPI642
import Distribution.Simple.Setup
( CopyFlags(..), fromFlag )
import Distribution.PackageDescription as PD
( PackageDescription(..), BuildInfo(..), Executable(..), withExe
, Library(..), libModules, hcOptions )
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(..),
absoluteInstallDirs )
import Distribution.Simple.InstallDirs hiding ( absoluteInstallDirs )
import Distribution.Simple.BuildPaths
import Distribution.Simple.Utils
import Distribution.Package
( PackageIdentifier, Package(..), PackageName(..) )
import qualified Distribution.ModuleName as ModuleName
import Distribution.Simple.Program
( Program(..), ConfiguredProgram(..), ProgramConfiguration, ProgArg
, ProgramLocation(..), rawSystemProgram, rawSystemProgramConf
, rawSystemProgramStdout, rawSystemProgramStdoutConf
, requireProgramVersion, requireProgram
, userMaybeSpecifyPath, programPath, lookupProgram, addKnownProgram
, ghcProgram, ghcPkgProgram, arProgram, ranlibProgram, 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 Distribution.Simple.Compiler
( CompilerFlavor(..), CompilerId(..), Compiler(..), compilerVersion
, OptimisationLevel(..), PackageDB(..), PackageDBStack
, Flag, extensionsToFlags )
import Distribution.Version
( Version(..), anyVersion, orLaterVersion )
import Distribution.System
( OS(..), buildOS )
import Distribution.Verbosity
import Distribution.Text
( display, simpleParse )
import Language.Haskell.Extension (Extension(..))
import Control.Monad ( unless, when )
import Data.Char ( isSpace )
import Data.List
import Data.Maybe ( catMaybes )
import Data.Monoid ( Monoid(..) )
import System.Directory
( removeFile, getDirectoryContents, doesFileExist
, getTemporaryDirectory )
import System.FilePath ( (</>), (<.>), takeExtension,
takeDirectory, replaceExtension, splitExtension )
import System.IO (hClose, hPutStrLn)
import Distribution.Compat.Exception (catchExit, catchIO)
-- -----------------------------------------------------------------------------
-- Configuring
configure :: Verbosity -> Maybe FilePath -> Maybe FilePath
-> ProgramConfiguration -> IO (Compiler, ProgramConfiguration)
configure verbosity hcPath hcPkgPath conf = do
(ghcProg, ghcVersion, conf') <-
requireProgramVersion verbosity ghcProgram
(orLaterVersion (Version [6,4] []))
(userMaybeSpecifyPath "ghc" hcPath conf)
-- 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, conf'') <-
requireProgramVersion verbosity ghcPkgProgram {
programFindLocation = guessGhcPkgFromGhcPath ghcProg
}
anyVersion (userMaybeSpecifyPath "ghc-pkg" hcPkgPath conf')
when (ghcVersion /= ghcPkgVersion) $ die $
"Version mismatch between ghc and ghc-pkg: "
++ programPath ghcProg ++ " is version " ++ display ghcVersion ++ " "
++ programPath ghcPkgProg ++ " is version " ++ display ghcPkgVersion
languageExtensions <- getLanguageExtensions verbosity ghcProg
let comp = Compiler {
compilerId = CompilerId GHC ghcVersion,
compilerExtensions = languageExtensions
}
conf''' = configureToolchain ghcProg conf'' -- configure gcc and ld
return (comp, conf''')
-- | 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-6.6.1(.exe)
-- > /usr/local/bin/ghc-pkg(.exe)
--
guessGhcPkgFromGhcPath :: ConfiguredProgram -> Verbosity -> IO (Maybe FilePath)
guessGhcPkgFromGhcPath ghcProg verbosity
= do let path = programPath ghcProg
dir = takeDirectory path
versionSuffix = takeVersionSuffix (dropExeExtension path)
guessNormal = dir </> "ghc-pkg" <.> exeExtension
guessVersioned = dir </> ("ghc-pkg" ++ versionSuffix) <.> exeExtension
guesses | null versionSuffix = [guessNormal]
| otherwise = [guessVersioned, guessNormal]
info verbosity $ "looking for package tool: ghc-pkg near compiler in " ++ dir
exists <- mapM doesFileExist guesses
case [ file | (file, True) <- zip guesses exists ] of
[] -> return Nothing
(pkgtool:_) -> do info verbosity $ "found package tool in " ++ pkgtool
return (Just pkgtool)
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
-- | Adjust the way we find and configure gcc and ld
--
configureToolchain :: ConfiguredProgram -> ProgramConfiguration
-> ProgramConfiguration
configureToolchain ghcProg =
addKnownProgram gccProgram {
programFindLocation = findProg gccProgram
[ baseDir </> "gcc.exe",
mingwDir </> "bin" </> "gcc.exe" ],
programPostConf = configureGcc
}
. addKnownProgram ldProgram {
programFindLocation = findProg ldProgram
[ libDir </> "ld.exe",
mingwDir </> "mingw32" </> "bin" </> "ld.exe" ],
programPostConf = configureLd
}
where
Just ghcVersion = programVersion ghcProg
compilerDir = takeDirectory (programPath ghcProg)
baseDir = takeDirectory compilerDir
mingwDir = baseDir </> "mingw"
libDir = baseDir </> "gcc-lib"
includeDir = baseDir </> "include" </> "mingw"
isWindows = case buildOS of Windows -> True; _ -> False
-- on Windows finding and configuring ghc's gcc and ld is a bit special
findProg :: Program -> [FilePath] -> Verbosity -> IO (Maybe FilePath)
findProg prog locations
| isWindows = \verbosity -> look locations verbosity
| otherwise = programFindLocation prog
where
look [] verbosity = do
warn verbosity ("Couldn't find " ++ programName prog ++ " where I expected it. Trying the search path.")
programFindLocation prog verbosity
look (f:fs) verbosity = do
exists <- doesFileExist f
if exists then return (Just f)
else look fs verbosity
configureGcc :: Verbosity -> ConfiguredProgram -> IO [ProgArg]
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 ["-B" ++ libDir, "-I" ++ includeDir]
_ -> return []
| otherwise = \_ _ -> return []
-- we need to find out if ld supports the -x flag
configureLd :: Verbosity -> ConfiguredProgram -> IO [ProgArg]
configureLd verbosity ldProg = do
tempDir <- getTemporaryDirectory
ldx <- withTempFile tempDir ".c" $ \testcfile testchnd ->
withTempFile tempDir ".o" $ \testofile testohnd -> do
hPutStrLn testchnd "int foo() {}"
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 ["-x"]
else return []
getLanguageExtensions :: Verbosity -> ConfiguredProgram -> IO [(Extension, Flag)]
getLanguageExtensions verbosity ghcProg
| ghcVersion >= Version [6,7] [] = do
exts <- rawSystemStdout verbosity (programPath ghcProg)
["--supported-languages"]
-- GHC has the annoying habit of inverting some of the extensions
-- so we have to try parsing ("No" ++ ghcExtensionName) first
let readExtension str = do
ext <- simpleParse ("No" ++ str)
case ext of
UnknownExtension _ -> simpleParse str
_ -> return ext
return $ extensionHacks
++ [ (ext, "-X" ++ display ext)
| Just ext <- map readExtension (lines exts) ]
| otherwise = return oldLanguageExtensions
where
Just ghcVersion = programVersion ghcProg
-- ghc-6.8 intorduced 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.
extensionHacks = [ (NamedFieldPuns, "-XRecordPuns")
| ghcVersion >= Version [6,8] []
&& ghcVersion < Version [6,10] [] ]
-- | For GHC 6.6.x and earlier, the mapping from supported extensions to flags
oldLanguageExtensions :: [(Extension, Flag)]
oldLanguageExtensions =
[(OverlappingInstances , "-fallow-overlapping-instances")
,(TypeSynonymInstances , "-fglasgow-exts")
,(TemplateHaskell , "-fth")
,(ForeignFunctionInterface , "-fffi")
,(NoMonomorphismRestriction , "-fno-monomorphism-restriction")
,(NoMonoPatBinds , "-fno-mono-pat-binds")
,(UndecidableInstances , "-fallow-undecidable-instances")
,(IncoherentInstances , "-fallow-incoherent-instances")
,(Arrows , "-farrows")
,(Generics , "-fgenerics")
,(NoImplicitPrelude , "-fno-implicit-prelude")
,(ImplicitParams , "-fimplicit-params")
,(CPP , "-cpp")
,(BangPatterns , "-fbang-patterns")
,(KindSignatures , fglasgowExts)
,(RecursiveDo , fglasgowExts)
,(ParallelListComp , fglasgowExts)
,(MultiParamTypeClasses , fglasgowExts)
,(FunctionalDependencies , fglasgowExts)
,(Rank2Types , fglasgowExts)
,(RankNTypes , fglasgowExts)
,(PolymorphicComponents , fglasgowExts)
,(ExistentialQuantification , fglasgowExts)
,(ScopedTypeVariables , "-fscoped-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 , "-fextended-default-rules")
,(UnboxedTuples , fglasgowExts)
,(DeriveDataTypeable , fglasgowExts)
,(ConstrainedClassMethods , fglasgowExts)
]
where
fglasgowExts = "-fglasgow-exts"
getInstalledPackages :: Verbosity -> PackageDBStack -> ProgramConfiguration
-> IO PackageIndex
getInstalledPackages verbosity packagedbs conf = do
checkPackageDbStack packagedbs
pkgss <- getInstalledPackages' verbosity packagedbs conf
topDir <- ghcLibDir' verbosity ghcProg
let indexes = [ PackageIndex.fromList (map (substTopDir topDir) pkgs)
| (_, pkgs) <- pkgss ]
return $! hackRtsPackage (mconcat indexes)
where
-- 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
Just ghcProg = lookupProgram ghcProgram conf
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.
ghcLibDir' :: Verbosity -> ConfiguredProgram -> IO FilePath
ghcLibDir' verbosity ghcProg =
(reverse . dropWhile isSpace . reverse) `fmap`
rawSystemProgramStdout verbosity ghcProg ["--print-libdir"]
checkPackageDbStack :: PackageDBStack -> IO ()
checkPackageDbStack (GlobalPackageDB:rest)
| GlobalPackageDB `notElem` rest = return ()
checkPackageDbStack _ =
die $ "GHC.getInstalledPackages: the global package db 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 :: Verbosity -> PackageDescription -> LocalBuildInfo
-> Library -> ComponentLocalBuildInfo -> IO ()
buildLib verbosity pkg_descr lbi lib clbi = do
let pref = buildDir lbi
pkgid = packageId pkg_descr
runGhcProg = rawSystemProgramConf verbosity ghcProgram (withPrograms lbi)
ifVanillaLib forceVanilla = when (forceVanilla || withVanillaLib lbi)
ifProfLib = when (withProfLib lbi)
ifSharedLib = when (withSharedLib lbi)
ifGHCiLib = when (withGHCiLib lbi && withVanillaLib lbi)
comp = compiler lbi
libBi <- hackThreadedFlag verbosity
comp (withProfLib lbi) (libBuildInfo lib)
let libTargetDir = pref
forceVanillaLib = TemplateHaskell `elem` extensions libBi
-- TH always needs vanilla libs, even when building for profiling
createDirectoryIfMissingVerbose verbosity True libTargetDir
-- TODO: do we need to put hs-boot files into place for mutually recurive modules?
let ghcArgs =
"--make"
: ["-package-name", display pkgid ]
++ constructGHCCmdLine lbi libBi clbi libTargetDir verbosity
++ map display (libModules lib)
ghcArgsProf = ghcArgs
++ ["-prof",
"-hisuf", "p_hi",
"-osuf", "p_o"
]
++ ghcProfOptions libBi
ghcArgsShared = ghcArgs
++ ["-dynamic",
"-hisuf", "dyn_hi",
"-osuf", "dyn_o", "-fPIC"
]
++ ghcSharedOptions libBi
unless (null (libModules lib)) $
do ifVanillaLib forceVanillaLib (runGhcProg ghcArgs)
ifProfLib (runGhcProg ghcArgsProf)
ifSharedLib (runGhcProg ghcArgsShared)
-- build any C sources
unless (null (cSources libBi)) $ do
info verbosity "Building C Sources..."
sequence_ [do let (odir,args) = constructCcCmdLine lbi libBi clbi pref
filename verbosity
(withProfLib lbi)
createDirectoryIfMissingVerbose verbosity True odir
runGhcProg args
ifSharedLib (runGhcProg (args ++ ["-fPIC", "-osuf dyn_o"]))
| filename <- cSources libBi]
-- link:
info verbosity "Linking..."
let cObjs = map (`replaceExtension` objExtension) (cSources libBi)
cSharedObjs = map (`replaceExtension` ("dyn_" ++ objExtension)) (cSources libBi)
vanillaLibFilePath = libTargetDir </> mkLibName pkgid
profileLibFilePath = libTargetDir </> mkProfLibName pkgid
sharedLibFilePath = libTargetDir </> mkSharedLibName pkgid
(compilerId (compiler lbi))
ghciLibFilePath = libTargetDir </> mkGHCiLibName pkgid
libInstallPath = libdir $ absoluteInstallDirs pkg_descr lbi NoCopyDest
sharedLibInstallPath = libInstallPath </> mkSharedLibName pkgid
(compilerId (compiler lbi))
stubObjs <- fmap catMaybes $ sequence
[ findFileWithExtension [objExtension] [libTargetDir]
(ModuleName.toFilePath x ++"_stub")
| x <- libModules lib ]
stubProfObjs <- fmap catMaybes $ sequence
[ findFileWithExtension ["p_" ++ objExtension] [libTargetDir]
(ModuleName.toFilePath x ++"_stub")
| x <- libModules lib ]
stubSharedObjs <- fmap catMaybes $ sequence
[ findFileWithExtension ["dyn_" ++ objExtension] [libTargetDir]
(ModuleName.toFilePath x ++"_stub")
| x <- libModules lib ]
hObjs <- getHaskellObjects lib lbi
pref objExtension True
hProfObjs <-
if (withProfLib lbi)
then getHaskellObjects lib lbi
pref ("p_" ++ objExtension) True
else return []
hSharedObjs <-
if (withSharedLib lbi)
then getHaskellObjects lib lbi
pref ("dyn_" ++ objExtension) False
else return []
unless (null hObjs && null cObjs && null stubObjs) $ do
-- first remove library files if they exists
sequence_
[ removeFile libFilePath `catchIO` \_ -> return ()
| libFilePath <- [vanillaLibFilePath, profileLibFilePath
,sharedLibFilePath, ghciLibFilePath] ]
let staticObjectFiles =
hObjs
++ map (pref </>) cObjs
++ stubObjs
profObjectFiles =
hProfObjs
++ map (pref </>) cObjs
++ stubProfObjs
ghciObjFiles =
hObjs
++ map (pref </>) cObjs
++ stubObjs
dynamicObjectFiles =
hSharedObjs
++ map (pref </>) 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 =
[ "-no-auto-link-packages",
"-shared",
"-dynamic",
"-o", sharedLibFilePath ]
-- For dynamic libs, Mac OS/X needs to know the install location
-- at build time.
++ (if buildOS == OSX
then ["-dylib-install-name", sharedLibInstallPath]
else [])
++ dynamicObjectFiles
++ ["-package-name", display pkgid ]
++ ghcPackageFlags lbi clbi
++ ["-l"++extraLib | extraLib <- extraLibs libBi]
++ ["-L"++extraLibDir | extraLibDir <- extraLibDirs libBi]
ifVanillaLib False $ do
(arProg, _) <- requireProgram verbosity arProgram (withPrograms lbi)
Ar.createArLibArchive verbosity arProg
vanillaLibFilePath staticObjectFiles
ifProfLib $ do
(arProg, _) <- requireProgram verbosity arProgram (withPrograms lbi)
Ar.createArLibArchive verbosity arProg
profileLibFilePath profObjectFiles
ifGHCiLib $ do
(ldProg, _) <- requireProgram verbosity ldProgram (withPrograms lbi)
Ld.combineObjectFiles verbosity ldProg
ghciLibFilePath ghciObjFiles
ifSharedLib $
runGhcProg ghcSharedLinkArgs
-- | Build an executable with GHC.
--
buildExe :: Verbosity -> PackageDescription -> LocalBuildInfo
-> Executable -> ComponentLocalBuildInfo -> IO ()
buildExe verbosity _pkg_descr lbi
exe@Executable { exeName = exeName', modulePath = modPath } clbi = do
let pref = buildDir lbi
runGhcProg = rawSystemProgramConf verbosity ghcProgram (withPrograms lbi)
exeBi <- hackThreadedFlag verbosity
(compiler lbi) (withProfExe lbi) (buildInfo exe)
-- exeNameReal, the name that GHC really uses (with .exe on Windows)
let exeNameReal = exeName' <.>
(if null $ takeExtension exeName' then exeExtension else "")
let targetDir = pref </> 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
unless (null (cSources exeBi)) $ do
info verbosity "Building C Sources."
sequence_ [do let (odir,args) = constructCcCmdLine lbi exeBi clbi
exeDir filename verbosity
(withProfExe lbi)
createDirectoryIfMissingVerbose verbosity True odir
runGhcProg args
| filename <- cSources exeBi]
srcMainFile <- findFile (exeDir : hsSourceDirs exeBi) modPath
let cObjs = map (`replaceExtension` objExtension) (cSources exeBi)
let binArgs linkExe profExe =
"--make"
: (if linkExe
then ["-o", targetDir </> exeNameReal]
else ["-c"])
++ constructGHCCmdLine lbi exeBi clbi exeDir verbosity
++ [exeDir </> x | x <- cObjs]
++ [srcMainFile]
++ ["-optl" ++ opt | opt <- PD.ldOptions exeBi]
++ ["-l"++lib | lib <- extraLibs exeBi]
++ ["-L"++libDir | libDir <- extraLibDirs exeBi]
++ concat [["-framework", f] | f <- PD.frameworks exeBi]
++ if profExe
then ["-prof",
"-hisuf", "p_hi",
"-osuf", "p_o"
] ++ ghcProfOptions exeBi
else []
-- For building exe's for profiling that use TH we actually
-- have to build twice, once without profiling and the again
-- with profiling. 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.
when (withProfExe lbi && TemplateHaskell `elem` extensions exeBi)
(runGhcProg (binArgs False False))
runGhcProg (binArgs True (withProfExe lbi))
-- | 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 ]
-- when using -split-objs, we need to search for object files in the
-- Module_split directory for each module.
getHaskellObjects :: Library -> LocalBuildInfo
-> FilePath -> String -> Bool -> IO [FilePath]
getHaskellObjects lib lbi pref wanted_obj_ext allow_split_objs
| splitObjs lbi && allow_split_objs = do
let splitSuffix = if compilerVersion (compiler lbi) <
Version [6, 11] []
then "_split"
else "_" ++ wanted_obj_ext ++ "_split"
dirs = [ pref </> (ModuleName.toFilePath x ++ splitSuffix)
| x <- libModules lib ]
objss <- mapM getDirectoryContents dirs
let objs = [ dir </> obj
| (objs',dir) <- zip objss dirs, obj <- objs',
let obj_ext = takeExtension obj,
'.':wanted_obj_ext == obj_ext ]
return objs
| otherwise =
return [ pref </> ModuleName.toFilePath x <.> wanted_obj_ext
| x <- libModules lib ]
-- | 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
ghcArgs =
"--abi-hash"
: ["-package-name", display (packageId pkg_descr) ]
++ constructGHCCmdLine lbi libBi clbi (buildDir lbi) verbosity
++ map display (exposedModules lib)
--
rawSystemProgramStdoutConf verbosity ghcProgram (withPrograms lbi) ghcArgs
constructGHCCmdLine
:: LocalBuildInfo
-> BuildInfo
-> ComponentLocalBuildInfo
-> FilePath
-> Verbosity
-> [String]
constructGHCCmdLine lbi bi clbi odir verbosity =
ghcVerbosityOptions verbosity
-- Unsupported extensions have already been checked by configure
++ ghcOptions lbi bi clbi odir
ghcVerbosityOptions :: Verbosity -> [String]
ghcVerbosityOptions verbosity
| verbosity >= deafening = ["-v"]
| verbosity >= normal = []
| otherwise = ["-w", "-v0"]
ghcOptions :: LocalBuildInfo -> BuildInfo -> ComponentLocalBuildInfo
-> FilePath -> [String]
ghcOptions lbi bi clbi odir
= ["-hide-all-packages"]
++ ["-fbuilding-cabal-package" | ghcVer >= Version [6,11] [] ]
++ ghcPackageDbOptions (withPackageDB lbi)
++ ["-split-objs" | splitObjs lbi ]
++ ["-i"]
++ ["-i" ++ odir]
++ ["-i" ++ l | l <- nub (hsSourceDirs bi)]
++ ["-i" ++ autogenModulesDir lbi]
++ ["-I" ++ autogenModulesDir lbi]
++ ["-I" ++ odir]
++ ["-I" ++ dir | dir <- PD.includeDirs bi]
++ ["-optP" ++ opt | opt <- cppOptions bi]
++ [ "-optP-include", "-optP"++ (autogenModulesDir lbi </> cppHeaderName) ]
++ [ "-#include \"" ++ inc ++ "\"" | ghcVer < Version [6,11] []
, inc <- PD.includes bi ]
++ [ "-odir", odir, "-hidir", odir ]
++ concat [ ["-stubdir", odir] | ghcVer >= Version [6,8] [] ]
++ ghcPackageFlags lbi clbi
++ (case withOptimization lbi of
NoOptimisation -> []
NormalOptimisation -> ["-O"]
MaximumOptimisation -> ["-O2"])
++ hcOptions GHC bi
++ extensionsToFlags (compiler lbi) (extensions bi)
where
ghcVer = compilerVersion (compiler lbi)
ghcPackageFlags :: LocalBuildInfo -> ComponentLocalBuildInfo -> [String]
ghcPackageFlags lbi clbi
| ghcVer >= Version [6,11] []
= concat [ ["-package-id", display ipkgid]
| (ipkgid, _) <- componentPackageDeps clbi ]
| otherwise = concat [ ["-package", display pkgid]
| (_, pkgid) <- componentPackageDeps clbi ]
where
ghcVer = compilerVersion (compiler lbi)
ghcPackageDbOptions :: PackageDBStack -> [String]
ghcPackageDbOptions dbstack = case dbstack of
(GlobalPackageDB:dbs)
| UserPackageDB `elem` dbs -> concatMap specific dbs
| otherwise -> "-no-user-package-conf"
: concatMap specific dbs
_ -> ierror
where
specific (SpecificPackageDB db) = [ "-package-conf", db ]
specific _ = []
ierror = error "internal error: unexpected package db stack"
constructCcCmdLine :: LocalBuildInfo -> BuildInfo -> ComponentLocalBuildInfo
-> FilePath -> FilePath -> Verbosity -> Bool
->(FilePath,[String])
constructCcCmdLine lbi bi clbi pref filename verbosity profiling
= let odir | compilerVersion (compiler lbi) >= Version [6,4,1] [] = pref
| otherwise = pref </> takeDirectory filename
-- ghc 6.4.1 fixed a bug in -odir handling
-- for C compilations.
in
(odir,
ghcCcOptions lbi bi clbi odir
++ (if verbosity >= deafening then ["-v"] else [])
++ ["-c",filename]
-- Note: When building with profiling enabled, we pass the -prof
-- option to ghc here when compiling C code, so that the PROFILING
-- macro gets defined. The macro is used in ghc's Rts.h in the
-- definitions of closure layouts (Closures.h).
++ ["-prof" | profiling])
ghcCcOptions :: LocalBuildInfo -> BuildInfo -> ComponentLocalBuildInfo
-> FilePath -> [String]
ghcCcOptions lbi bi clbi odir
= ["-I" ++ dir | dir <- PD.includeDirs bi]
++ ghcPackageDbOptions (withPackageDB lbi)
++ ghcPackageFlags lbi clbi
++ ["-optc" ++ opt | opt <- PD.ccOptions bi]
++ (case withOptimization lbi of
NoOptimisation -> []
_ -> ["-optc-O2"])
++ ["-odir", odir]
mkGHCiLibName :: PackageIdentifier -> String
mkGHCiLibName lib = "HS" ++ display lib <.> "o"
-- -----------------------------------------------------------------------------
-- Installing
-- |Install executables for GHC.
installExe :: CopyFlags -- ^verbosity
-> LocalBuildInfo
-> InstallDirs FilePath -- ^Where to copy the files to
-> FilePath -- ^Build location
-> (FilePath, FilePath) -- ^Executable (prefix,suffix)
-> PackageDescription
-> IO ()
installExe flags lbi installDirs buildPref (progprefix, progsuffix) pkg_descr
= do let verbosity = fromFlag (copyVerbosity flags)
binDir = bindir installDirs
createDirectoryIfMissingVerbose verbosity True binDir
withExe pkg_descr $ \Executable { exeName = e } -> do
let exeFileName = e <.> exeExtension
fixedExeBaseName = progprefix ++ e ++ progsuffix
installBinary dest = do
installExecutableFile verbosity
(buildPref </> e </> exeFileName)
(dest <.> exeExtension)
stripExe verbosity lbi exeFileName (dest <.> exeExtension)
installBinary (binDir </> fixedExeBaseName)
stripExe :: Verbosity -> LocalBuildInfo -> FilePath -> FilePath -> IO ()
stripExe verbosity lbi name path = when (stripExes lbi) $
case lookupProgram stripProgram (withPrograms lbi) of
Just strip -> rawSystemProgram verbosity strip args
Nothing -> unless (buildOS == Windows) $
-- Don't bother warning on windows, we don't expect them to
-- have the strip program anyway.
warn verbosity $ "Unable to strip executable '" ++ name
++ "' (missing the 'strip' program)"
where
args = path : case buildOS of
OSX -> ["-x"] -- By default, stripping the ghc binary on at least
-- some OS X installations causes:
-- HSbase-3.0.o: unknown symbol `_environ'"
-- The -x flag fixes that.
_ -> []
-- |Install for ghc, .hi, .a and, if --with-ghci given, .o
installLib :: CopyFlags -- ^verbosity
-> LocalBuildInfo
-> FilePath -- ^install location
-> FilePath -- ^install location for dynamic librarys
-> FilePath -- ^Build location
-> PackageDescription -> IO ()
installLib flags lbi targetDir dynlibTargetDir builtDir
pkg@PackageDescription{library=Just lib} = do
-- copy .hi files over:
let verbosity = fromFlag (copyVerbosity flags)
copyHelper installFun src dst n = do
createDirectoryIfMissingVerbose verbosity True dst
installFun verbosity (src </> n) (dst </> n)
copy = copyHelper installOrdinaryFile
copyShared = copyHelper installExecutableFile
copyModuleFiles ext =
findModuleFiles [builtDir] [ext] (libModules lib)
>>= installOrdinaryFiles verbosity targetDir
ifVanilla $ copyModuleFiles "hi"
ifProf $ copyModuleFiles "p_hi"
ifShared $ copyModuleFiles "dyn_hi"
-- copy the built library files over:
ifVanilla $ copy builtDir targetDir vanillaLibName
ifProf $ copy builtDir targetDir profileLibName
ifGHCi $ copy builtDir targetDir ghciLibName
ifShared $ copyShared builtDir dynlibTargetDir sharedLibName
-- run ranlib if necessary:
ifVanilla $ updateLibArchive verbosity lbi
(targetDir </> vanillaLibName)
ifProf $ updateLibArchive verbosity lbi
(targetDir </> profileLibName)
where
vanillaLibName = mkLibName pkgid
profileLibName = mkProfLibName pkgid
ghciLibName = mkGHCiLibName pkgid
sharedLibName = mkSharedLibName pkgid (compilerId (compiler lbi))
pkgid = packageId pkg
hasLib = not $ null (libModules lib)
&& null (cSources (libBuildInfo lib))
ifVanilla = when (hasLib && withVanillaLib lbi)
ifProf = when (hasLib && withProfLib lbi)
ifGHCi = when (hasLib && withGHCiLib lbi)
ifShared = when (hasLib && withSharedLib lbi)
installLib _ _ _ _ _ PackageDescription{library=Nothing}
= die $ "Internal Error. installLibGHC called with no library."
-- | On MacOS X we have to call @ranlib@ to regenerate the archive index after
-- copying. This is because the silly MacOS X linker checks that the archive
-- index is not older than the file itself, which means simply
-- copying/installing the file breaks it!!
--
updateLibArchive :: Verbosity -> LocalBuildInfo -> FilePath -> IO ()
updateLibArchive verbosity lbi path
| buildOS == OSX = do
(ranlib, _) <- requireProgram verbosity ranlibProgram (withPrograms lbi)
rawSystemProgram verbosity ranlib [path]
| otherwise = return ()