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-----------------------------------------------------------------------------
-- |
-- Module : Distribution.Simple.Build
-- Copyright : Isaac Jones 2003-2005,
-- Ross Paterson 2006,
-- Duncan Coutts 2007-2008, 2012
-- License : BSD3
--
-- Maintainer : cabal-devel@haskell.org
-- Portability : portable
--
-- This is the entry point to actually building the modules in a package. It
-- doesn't actually do much itself, most of the work is delegated to
-- compiler-specific actions. It does do some non-compiler specific bits like
-- running pre-processors.
--
module Distribution.Simple.Build (
build, repl,
startInterpreter,
initialBuildSteps,
writeAutogenFiles,
) where
import qualified Distribution.Simple.GHC as GHC
import qualified Distribution.Simple.GHCJS as GHCJS
import qualified Distribution.Simple.JHC as JHC
import qualified Distribution.Simple.LHC as LHC
import qualified Distribution.Simple.UHC as UHC
import qualified Distribution.Simple.HaskellSuite as HaskellSuite
import qualified Distribution.Simple.Build.Macros as Build.Macros
import qualified Distribution.Simple.Build.PathsModule as Build.PathsModule
import Distribution.Package
( Package(..), PackageName(..), PackageIdentifier(..)
, Dependency(..), thisPackageVersion, mkPackageKey, packageName )
import Distribution.Simple.Compiler
( Compiler, CompilerFlavor(..), compilerFlavor
, PackageDB(..), PackageDBStack, packageKeySupported )
import Distribution.PackageDescription
( PackageDescription(..), BuildInfo(..), Library(..), Executable(..)
, TestSuite(..), TestSuiteInterface(..), Benchmark(..)
, BenchmarkInterface(..), defaultRenaming )
import qualified Distribution.InstalledPackageInfo as IPI
import qualified Distribution.ModuleName as ModuleName
import Distribution.ModuleName (ModuleName)
import Distribution.Simple.Setup
( Flag(..), BuildFlags(..), ReplFlags(..), fromFlag )
import Distribution.Simple.BuildTarget
( BuildTarget(..), readBuildTargets )
import Distribution.Simple.PreProcess
( preprocessComponent, preprocessExtras, PPSuffixHandler )
import Distribution.Simple.LocalBuildInfo
( LocalBuildInfo(compiler, buildDir, withPackageDB, withPrograms, pkgKey)
, Component(..), componentName, getComponent, componentBuildInfo
, ComponentLocalBuildInfo(..), pkgEnabledComponents
, withComponentsInBuildOrder, componentsInBuildOrder
, ComponentName(..), showComponentName
, ComponentDisabledReason(..), componentDisabledReason
, inplacePackageId, LibraryName(..) )
import Distribution.Simple.Program.Types
import Distribution.Simple.Program.Db
import qualified Distribution.Simple.Program.HcPkg as HcPkg
import Distribution.Simple.BuildPaths
( autogenModulesDir, autogenModuleName, cppHeaderName, exeExtension )
import Distribution.Simple.Register
( registerPackage, inplaceInstalledPackageInfo )
import Distribution.Simple.Test.LibV09 ( stubFilePath, stubName )
import Distribution.Simple.Utils
( createDirectoryIfMissingVerbose, rewriteFile
, die, info, debug, warn, setupMessage )
import Distribution.Verbosity
( Verbosity )
import Distribution.Text
( display )
import qualified Data.Map as Map
import qualified Data.Set as Set
import Data.Maybe
( maybeToList )
import Data.Either
( partitionEithers )
import Data.List
( intersect, intercalate )
import Control.Monad
( when, unless, forM_ )
import System.FilePath
( (</>), (<.>) )
import System.Directory
( getCurrentDirectory, removeDirectoryRecursive, removeFile
, doesDirectoryExist, doesFileExist )
-- -----------------------------------------------------------------------------
-- |Build the libraries and executables in this package.
build :: PackageDescription -- ^ Mostly information from the .cabal file
-> LocalBuildInfo -- ^ Configuration information
-> BuildFlags -- ^ Flags that the user passed to build
-> [ PPSuffixHandler ] -- ^ preprocessors to run before compiling
-> IO ()
build pkg_descr lbi flags suffixes = do
let distPref = fromFlag (buildDistPref flags)
verbosity = fromFlag (buildVerbosity flags)
targets <- readBuildTargets pkg_descr (buildArgs flags)
targets' <- checkBuildTargets verbosity pkg_descr targets
let componentsToBuild = map fst (componentsInBuildOrder lbi (map fst targets'))
info verbosity $ "Component build order: "
++ intercalate ", " (map showComponentName componentsToBuild)
initialBuildSteps distPref pkg_descr lbi verbosity
when (null targets) $
-- Only bother with this message if we're building the whole package
setupMessage verbosity "Building" (packageId pkg_descr)
internalPackageDB <- createInternalPackageDB verbosity lbi distPref
withComponentsInBuildOrder pkg_descr lbi componentsToBuild $ \comp clbi ->
let bi = componentBuildInfo comp
progs' = addInternalBuildTools pkg_descr lbi bi (withPrograms lbi)
lbi' = lbi {
withPrograms = progs',
withPackageDB = withPackageDB lbi ++ [internalPackageDB]
}
in buildComponent verbosity (buildNumJobs flags) pkg_descr
lbi' suffixes comp clbi distPref
repl :: PackageDescription -- ^ Mostly information from the .cabal file
-> LocalBuildInfo -- ^ Configuration information
-> ReplFlags -- ^ Flags that the user passed to build
-> [ PPSuffixHandler ] -- ^ preprocessors to run before compiling
-> [String]
-> IO ()
repl pkg_descr lbi flags suffixes args = do
let distPref = fromFlag (replDistPref flags)
verbosity = fromFlag (replVerbosity flags)
targets <- readBuildTargets pkg_descr args
targets' <- case targets of
[] -> return $ take 1 [ componentName c
| c <- pkgEnabledComponents pkg_descr ]
[target] -> fmap (map fst) (checkBuildTargets verbosity pkg_descr [target])
_ -> die $ "The 'repl' command does not support multiple targets at once."
let componentsToBuild = componentsInBuildOrder lbi targets'
componentForRepl = last componentsToBuild
debug verbosity $ "Component build order: "
++ intercalate ", "
[ showComponentName c | (c,_) <- componentsToBuild ]
initialBuildSteps distPref pkg_descr lbi verbosity
internalPackageDB <- createInternalPackageDB verbosity lbi distPref
let lbiForComponent comp lbi' =
lbi' {
withPackageDB = withPackageDB lbi ++ [internalPackageDB],
withPrograms = addInternalBuildTools pkg_descr lbi'
(componentBuildInfo comp) (withPrograms lbi')
}
-- build any dependent components
sequence_
[ let comp = getComponent pkg_descr cname
lbi' = lbiForComponent comp lbi
in buildComponent verbosity NoFlag
pkg_descr lbi' suffixes comp clbi distPref
| (cname, clbi) <- init componentsToBuild ]
-- REPL for target components
let (cname, clbi) = componentForRepl
comp = getComponent pkg_descr cname
lbi' = lbiForComponent comp lbi
in replComponent verbosity pkg_descr lbi' suffixes comp clbi distPref
-- | Start an interpreter without loading any package files.
startInterpreter :: Verbosity -> ProgramDb -> Compiler -> PackageDBStack -> IO ()
startInterpreter verbosity programDb comp packageDBs =
case compilerFlavor comp of
GHC -> GHC.startInterpreter verbosity programDb comp packageDBs
GHCJS -> GHCJS.startInterpreter verbosity programDb comp packageDBs
_ -> die "A REPL is not supported with this compiler."
buildComponent :: Verbosity
-> Flag (Maybe Int)
-> PackageDescription
-> LocalBuildInfo
-> [PPSuffixHandler]
-> Component
-> ComponentLocalBuildInfo
-> FilePath
-> IO ()
buildComponent verbosity numJobs pkg_descr lbi suffixes
comp@(CLib lib) clbi distPref = do
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
info verbosity "Building library..."
let libbi = libBuildInfo lib
lib' = lib { libBuildInfo = addExtraCSources libbi extras }
buildLib verbosity numJobs pkg_descr lbi lib' clbi
-- Register the library in-place, so exes can depend
-- on internally defined libraries.
pwd <- getCurrentDirectory
let -- The in place registration uses the "-inplace" suffix, not an ABI hash
ipkgid = inplacePackageId (packageId installedPkgInfo)
installedPkgInfo = inplaceInstalledPackageInfo pwd distPref pkg_descr
ipkgid lib' lbi clbi
registerPackage verbosity
installedPkgInfo pkg_descr lbi True -- True meaning in place
(withPackageDB lbi)
buildComponent verbosity numJobs pkg_descr lbi suffixes
comp@(CExe exe) clbi _ = do
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
info verbosity $ "Building executable " ++ exeName exe ++ "..."
let ebi = buildInfo exe
exe' = exe { buildInfo = addExtraCSources ebi extras }
buildExe verbosity numJobs pkg_descr lbi exe' clbi
buildComponent verbosity numJobs pkg_descr lbi suffixes
comp@(CTest test@TestSuite { testInterface = TestSuiteExeV10{} })
clbi _distPref = do
let exe = testSuiteExeV10AsExe test
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
info verbosity $ "Building test suite " ++ testName test ++ "..."
let ebi = buildInfo exe
exe' = exe { buildInfo = addExtraCSources ebi extras }
buildExe verbosity numJobs pkg_descr lbi exe' clbi
buildComponent verbosity numJobs pkg_descr lbi0 suffixes
comp@(CTest
test@TestSuite { testInterface = TestSuiteLibV09{} })
clbi -- This ComponentLocalBuildInfo corresponds to a detailed
-- test suite and not a real component. It should not
-- be used, except to construct the CLBIs for the
-- library and stub executable that will actually be
-- built.
distPref = do
pwd <- getCurrentDirectory
let (pkg, lib, libClbi, lbi, ipi, exe, exeClbi) =
testSuiteLibV09AsLibAndExe pkg_descr test clbi lbi0 distPref pwd
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
info verbosity $ "Building test suite " ++ testName test ++ "..."
buildLib verbosity numJobs pkg lbi lib libClbi
registerPackage verbosity ipi pkg lbi True $ withPackageDB lbi
let ebi = buildInfo exe
exe' = exe { buildInfo = addExtraCSources ebi extras }
buildExe verbosity numJobs pkg_descr lbi exe' exeClbi
buildComponent _ _ _ _ _
(CTest TestSuite { testInterface = TestSuiteUnsupported tt })
_ _ =
die $ "No support for building test suite type " ++ display tt
buildComponent verbosity numJobs pkg_descr lbi suffixes
comp@(CBench bm@Benchmark { benchmarkInterface = BenchmarkExeV10 {} })
clbi _ = do
let (exe, exeClbi) = benchmarkExeV10asExe bm clbi
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
info verbosity $ "Building benchmark " ++ benchmarkName bm ++ "..."
let ebi = buildInfo exe
exe' = exe { buildInfo = addExtraCSources ebi extras }
buildExe verbosity numJobs pkg_descr lbi exe' exeClbi
buildComponent _ _ _ _ _
(CBench Benchmark { benchmarkInterface = BenchmarkUnsupported tt })
_ _ =
die $ "No support for building benchmark type " ++ display tt
-- | Add extra C sources generated by preprocessing to build
-- information.
addExtraCSources :: BuildInfo -> [FilePath] -> BuildInfo
addExtraCSources bi extras = bi { cSources = new }
where new = Set.toList $ old `Set.union` exs
old = Set.fromList $ cSources bi
exs = Set.fromList extras
replComponent :: Verbosity
-> PackageDescription
-> LocalBuildInfo
-> [PPSuffixHandler]
-> Component
-> ComponentLocalBuildInfo
-> FilePath
-> IO ()
replComponent verbosity pkg_descr lbi suffixes
comp@(CLib lib) clbi _ = do
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
let libbi = libBuildInfo lib
lib' = lib { libBuildInfo = libbi { cSources = cSources libbi ++ extras } }
replLib verbosity pkg_descr lbi lib' clbi
replComponent verbosity pkg_descr lbi suffixes
comp@(CExe exe) clbi _ = do
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
let ebi = buildInfo exe
exe' = exe { buildInfo = ebi { cSources = cSources ebi ++ extras } }
replExe verbosity pkg_descr lbi exe' clbi
replComponent verbosity pkg_descr lbi suffixes
comp@(CTest test@TestSuite { testInterface = TestSuiteExeV10{} })
clbi _distPref = do
let exe = testSuiteExeV10AsExe test
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
let ebi = buildInfo exe
exe' = exe { buildInfo = ebi { cSources = cSources ebi ++ extras } }
replExe verbosity pkg_descr lbi exe' clbi
replComponent verbosity pkg_descr lbi0 suffixes
comp@(CTest
test@TestSuite { testInterface = TestSuiteLibV09{} })
clbi distPref = do
pwd <- getCurrentDirectory
let (pkg, lib, libClbi, lbi, _, _, _) =
testSuiteLibV09AsLibAndExe pkg_descr test clbi lbi0 distPref pwd
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
let libbi = libBuildInfo lib
lib' = lib { libBuildInfo = libbi { cSources = cSources libbi ++ extras } }
replLib verbosity pkg lbi lib' libClbi
replComponent _ _ _ _
(CTest TestSuite { testInterface = TestSuiteUnsupported tt })
_ _ =
die $ "No support for building test suite type " ++ display tt
replComponent verbosity pkg_descr lbi suffixes
comp@(CBench bm@Benchmark { benchmarkInterface = BenchmarkExeV10 {} })
clbi _ = do
let (exe, exeClbi) = benchmarkExeV10asExe bm clbi
preprocessComponent pkg_descr comp lbi False verbosity suffixes
extras <- preprocessExtras comp lbi
let ebi = buildInfo exe
exe' = exe { buildInfo = ebi { cSources = cSources ebi ++ extras } }
replExe verbosity pkg_descr lbi exe' exeClbi
replComponent _ _ _ _
(CBench Benchmark { benchmarkInterface = BenchmarkUnsupported tt })
_ _ =
die $ "No support for building benchmark type " ++ display tt
----------------------------------------------------
-- Shared code for buildComponent and replComponent
--
-- | Translate a exe-style 'TestSuite' component into an exe for building
testSuiteExeV10AsExe :: TestSuite -> Executable
testSuiteExeV10AsExe test@TestSuite { testInterface = TestSuiteExeV10 _ mainFile } =
Executable {
exeName = testName test,
modulePath = mainFile,
buildInfo = testBuildInfo test
}
testSuiteExeV10AsExe TestSuite{} = error "testSuiteExeV10AsExe: wrong kind"
-- | Translate a lib-style 'TestSuite' component into a lib + exe for building
testSuiteLibV09AsLibAndExe :: PackageDescription
-> TestSuite
-> ComponentLocalBuildInfo
-> LocalBuildInfo
-> FilePath
-> FilePath
-> (PackageDescription,
Library, ComponentLocalBuildInfo,
LocalBuildInfo,
IPI.InstalledPackageInfo_ ModuleName,
Executable, ComponentLocalBuildInfo)
testSuiteLibV09AsLibAndExe pkg_descr
test@TestSuite { testInterface = TestSuiteLibV09 _ m }
clbi lbi distPref pwd =
(pkg, lib, libClbi, lbi', ipi, exe, exeClbi)
where
bi = testBuildInfo test
lib = Library {
exposedModules = [ m ],
reexportedModules = [],
requiredSignatures = [],
exposedSignatures = [],
libExposed = True,
libBuildInfo = bi
}
libClbi = LibComponentLocalBuildInfo
{ componentPackageDeps = componentPackageDeps clbi
, componentPackageRenaming = componentPackageRenaming clbi
, componentLibraries = [LibraryName (testName test)]
, componentExposedModules = [IPI.ExposedModule m Nothing Nothing]
}
pkg = pkg_descr {
package = (package pkg_descr) {
pkgName = PackageName (testName test)
}
, buildDepends = targetBuildDepends $ testBuildInfo test
, executables = []
, testSuites = []
, library = Just lib
}
-- Hack to make the library compile with the right package key.
-- Probably the "right" way to do this is move this information to
-- the ComponentLocalBuildInfo, but it seems odd that a single package
-- can define multiple actual packages.
lbi' = lbi {
pkgKey = mkPackageKey (packageKeySupported (compiler lbi))
(package pkg) [] []
}
ipkgid = inplacePackageId (packageId pkg)
ipi = inplaceInstalledPackageInfo pwd distPref pkg ipkgid lib lbi' libClbi
testDir = buildDir lbi </> stubName test
</> stubName test ++ "-tmp"
testLibDep = thisPackageVersion $ package pkg
exe = Executable {
exeName = stubName test,
modulePath = stubFilePath test,
buildInfo = (testBuildInfo test) {
hsSourceDirs = [ testDir ],
targetBuildDepends = testLibDep
: (targetBuildDepends $ testBuildInfo test),
targetBuildRenaming =
Map.insert (packageName pkg) defaultRenaming
(targetBuildRenaming $ testBuildInfo test)
}
}
-- | The stub executable needs a new 'ComponentLocalBuildInfo'
-- that exposes the relevant test suite library.
exeClbi = ExeComponentLocalBuildInfo {
componentPackageDeps =
(IPI.installedPackageId ipi, packageId ipi)
: (filter (\(_, x) -> let PackageName name = pkgName x
in name == "Cabal" || name == "base")
(componentPackageDeps clbi)),
componentPackageRenaming =
Map.insert (packageName ipi) defaultRenaming
(componentPackageRenaming clbi)
}
testSuiteLibV09AsLibAndExe _ TestSuite{} _ _ _ _ = error "testSuiteLibV09AsLibAndExe: wrong kind"
-- | Translate a exe-style 'Benchmark' component into an exe for building
benchmarkExeV10asExe :: Benchmark -> ComponentLocalBuildInfo
-> (Executable, ComponentLocalBuildInfo)
benchmarkExeV10asExe bm@Benchmark { benchmarkInterface = BenchmarkExeV10 _ f }
clbi =
(exe, exeClbi)
where
exe = Executable {
exeName = benchmarkName bm,
modulePath = f,
buildInfo = benchmarkBuildInfo bm
}
exeClbi = ExeComponentLocalBuildInfo {
componentPackageDeps = componentPackageDeps clbi,
componentPackageRenaming = componentPackageRenaming clbi
}
benchmarkExeV10asExe Benchmark{} _ = error "benchmarkExeV10asExe: wrong kind"
-- | Initialize a new package db file for libraries defined
-- internally to the package.
createInternalPackageDB :: Verbosity -> LocalBuildInfo -> FilePath
-> IO PackageDB
createInternalPackageDB verbosity lbi distPref = do
case compilerFlavor (compiler lbi) of
GHC -> createWith $ GHC.hcPkgInfo (withPrograms lbi)
GHCJS -> createWith $ GHCJS.hcPkgInfo (withPrograms lbi)
LHC -> createWith $ LHC.hcPkgInfo (withPrograms lbi)
_ -> return packageDB
where
dbPath = distPref </> "package.conf.inplace"
packageDB = SpecificPackageDB dbPath
createWith hpi = do
dir_exists <- doesDirectoryExist dbPath
if dir_exists
then removeDirectoryRecursive dbPath
else do file_exists <- doesFileExist dbPath
when file_exists $ removeFile dbPath
if HcPkg.useSingleFileDb hpi
then writeFile dbPath "[]"
else HcPkg.init hpi verbosity dbPath
return packageDB
addInternalBuildTools :: PackageDescription -> LocalBuildInfo -> BuildInfo
-> ProgramDb -> ProgramDb
addInternalBuildTools pkg lbi bi progs =
foldr updateProgram progs internalBuildTools
where
internalBuildTools =
[ simpleConfiguredProgram toolName (FoundOnSystem toolLocation)
| toolName <- toolNames
, let toolLocation = buildDir lbi </> toolName </> toolName <.> exeExtension ]
toolNames = intersect buildToolNames internalExeNames
internalExeNames = map exeName (executables pkg)
buildToolNames = map buildToolName (buildTools bi)
where
buildToolName (Dependency (PackageName name) _ ) = name
-- TODO: build separate libs in separate dirs so that we can build
-- multiple libs, e.g. for 'LibTest' library-style test suites
buildLib :: Verbosity -> Flag (Maybe Int)
-> PackageDescription -> LocalBuildInfo
-> Library -> ComponentLocalBuildInfo -> IO ()
buildLib verbosity numJobs pkg_descr lbi lib clbi =
case compilerFlavor (compiler lbi) of
GHC -> GHC.buildLib verbosity numJobs pkg_descr lbi lib clbi
GHCJS -> GHCJS.buildLib verbosity numJobs pkg_descr lbi lib clbi
JHC -> JHC.buildLib verbosity pkg_descr lbi lib clbi
LHC -> LHC.buildLib verbosity pkg_descr lbi lib clbi
UHC -> UHC.buildLib verbosity pkg_descr lbi lib clbi
HaskellSuite {} -> HaskellSuite.buildLib verbosity pkg_descr lbi lib clbi
_ -> die "Building is not supported with this compiler."
buildExe :: Verbosity -> Flag (Maybe Int)
-> PackageDescription -> LocalBuildInfo
-> Executable -> ComponentLocalBuildInfo -> IO ()
buildExe verbosity numJobs pkg_descr lbi exe clbi =
case compilerFlavor (compiler lbi) of
GHC -> GHC.buildExe verbosity numJobs pkg_descr lbi exe clbi
GHCJS -> GHCJS.buildExe verbosity numJobs pkg_descr lbi exe clbi
JHC -> JHC.buildExe verbosity pkg_descr lbi exe clbi
LHC -> LHC.buildExe verbosity pkg_descr lbi exe clbi
UHC -> UHC.buildExe verbosity pkg_descr lbi exe clbi
_ -> die "Building is not supported with this compiler."
replLib :: Verbosity -> PackageDescription -> LocalBuildInfo
-> Library -> ComponentLocalBuildInfo -> IO ()
replLib verbosity pkg_descr lbi lib clbi =
case compilerFlavor (compiler lbi) of
-- 'cabal repl' doesn't need to support 'ghc --make -j', so we just pass
-- NoFlag as the numJobs parameter.
GHC -> GHC.replLib verbosity NoFlag pkg_descr lbi lib clbi
GHCJS -> GHCJS.replLib verbosity NoFlag pkg_descr lbi lib clbi
_ -> die "A REPL is not supported for this compiler."
replExe :: Verbosity -> PackageDescription -> LocalBuildInfo
-> Executable -> ComponentLocalBuildInfo -> IO ()
replExe verbosity pkg_descr lbi exe clbi =
case compilerFlavor (compiler lbi) of
GHC -> GHC.replExe verbosity NoFlag pkg_descr lbi exe clbi
GHCJS -> GHCJS.replExe verbosity NoFlag pkg_descr lbi exe clbi
_ -> die "A REPL is not supported for this compiler."
initialBuildSteps :: FilePath -- ^"dist" prefix
-> PackageDescription -- ^mostly information from the .cabal file
-> LocalBuildInfo -- ^Configuration information
-> Verbosity -- ^The verbosity to use
-> IO ()
initialBuildSteps _distPref pkg_descr lbi verbosity = do
-- check that there's something to build
let buildInfos =
map libBuildInfo (maybeToList (library pkg_descr)) ++
map buildInfo (executables pkg_descr)
unless (any buildable buildInfos) $ do
let name = display (packageId pkg_descr)
die ("Package " ++ name ++ " can't be built on this system.")
createDirectoryIfMissingVerbose verbosity True (buildDir lbi)
writeAutogenFiles verbosity pkg_descr lbi
-- | Generate and write out the Paths_<pkg>.hs and cabal_macros.h files
--
writeAutogenFiles :: Verbosity
-> PackageDescription
-> LocalBuildInfo
-> IO ()
writeAutogenFiles verbosity pkg lbi = do
createDirectoryIfMissingVerbose verbosity True (autogenModulesDir lbi)
let pathsModulePath = autogenModulesDir lbi
</> ModuleName.toFilePath (autogenModuleName pkg) <.> "hs"
rewriteFile pathsModulePath (Build.PathsModule.generate pkg lbi)
let cppHeaderPath = autogenModulesDir lbi </> cppHeaderName
rewriteFile cppHeaderPath (Build.Macros.generate pkg lbi)
-- | Check that the given build targets are valid in the current context.
--
-- Also swizzle into a more convenient form.
--
checkBuildTargets :: Verbosity -> PackageDescription -> [BuildTarget]
-> IO [(ComponentName, Maybe (Either ModuleName FilePath))]
checkBuildTargets _ pkg [] =
return [ (componentName c, Nothing) | c <- pkgEnabledComponents pkg ]
checkBuildTargets verbosity pkg targets = do
let (enabled, disabled) =
partitionEithers
[ case componentDisabledReason (getComponent pkg cname) of
Nothing -> Left target'
Just reason -> Right (cname, reason)
| target <- targets
, let target'@(cname,_) = swizzleTarget target ]
case disabled of
[] -> return ()
((cname,reason):_) -> die $ formatReason (showComponentName cname) reason
forM_ [ (c, t) | (c, Just t) <- enabled ] $ \(c, t) ->
warn verbosity $ "Ignoring '" ++ either display id t ++ ". The whole "
++ showComponentName c ++ " will be built. (Support for "
++ "module and file targets has not been implemented yet.)"
return enabled
where
swizzleTarget (BuildTargetComponent c) = (c, Nothing)
swizzleTarget (BuildTargetModule c m) = (c, Just (Left m))
swizzleTarget (BuildTargetFile c f) = (c, Just (Right f))
formatReason cn DisabledComponent =
"Cannot build the " ++ cn ++ " because the component is marked "
++ "as disabled in the .cabal file."
formatReason cn DisabledAllTests =
"Cannot build the " ++ cn ++ " because test suites are not "
++ "enabled. Run configure with the flag --enable-tests"
formatReason cn DisabledAllBenchmarks =
"Cannot build the " ++ cn ++ " because benchmarks are not "
++ "enabled. Re-run configure with the flag --enable-benchmarks"
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