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module Utilities (
build, buildWithResources, buildWithCmdOptions, runBuilder, runBuilderWith,
needLibrary, contextDependencies, stage1Dependencies, libraryTargets,
topsortPackages
) where
import qualified Hadrian.Builder as H
import Hadrian.Haskell.Cabal
import Hadrian.Utilities
import Context
import Expression hiding (stage)
import Oracles.PackageData
import Settings
import Target
import UserSettings
build :: Target -> Action ()
build target = H.build target getArgs
buildWithResources :: [(Resource, Int)] -> Target -> Action ()
buildWithResources rs target = H.buildWithResources rs target getArgs
buildWithCmdOptions :: [CmdOption] -> Target -> Action ()
buildWithCmdOptions opts target = H.buildWithCmdOptions opts target getArgs
-- | Given a 'Context' this 'Action' look up the package dependencies and wrap
-- the results in appropriate contexts. The only subtlety here is that we never
-- depend on packages built in 'Stage2' or later, therefore the stage of the
-- resulting dependencies is bounded from above at 'Stage1'. To compute package
-- dependencies we scan package @.cabal@ files, see 'pkgDependencies' defined
-- in "Hadrian.Haskell.Cabal".
contextDependencies :: Context -> Action [Context]
contextDependencies Context {..} = case pkgCabalFile package of
Nothing -> return [] -- Non-Cabal packages have no dependencies.
Just cabalFile -> do
let depStage = min stage Stage1
depContext = \pkg -> Context depStage pkg way
deps <- pkgDependencies cabalFile
pkgs <- sort <$> stagePackages depStage
return . map depContext $ intersectOrd (compare . pkgName) pkgs deps
-- | Lookup dependencies of a 'Package' in the vanilla Stage1 context.
stage1Dependencies :: Package -> Action [Package]
stage1Dependencies =
fmap (map Context.package) . contextDependencies . vanillaContext Stage1
-- | Given a library 'Package' this action computes all of its targets. See
-- 'packageTargets' for the explanation of the @includeGhciLib@ parameter.
libraryTargets :: Bool -> Context -> Action [FilePath]
libraryTargets includeGhciLib context = do
confFile <- pkgConfFile context
libFile <- pkgLibraryFile context
lib0File <- pkgLibraryFile0 context
lib0 <- buildDll0 context
ghciLib <- pkgGhciLibraryFile context
ghciFlag <- if includeGhciLib
then interpretInContext context $ getPkgData BuildGhciLib
else return "NO"
let ghci = ghciFlag == "YES" && (stage context == Stage1 || stage1Only)
return $ [ confFile, libFile ] ++ [ lib0File | lib0 ] ++ [ ghciLib | ghci ]
-- | Coarse-grain 'need': make sure all given libraries are fully built.
needLibrary :: [Context] -> Action ()
needLibrary cs = need =<< concatMapM (libraryTargets True) cs
-- HACK (izgzhen), see https://github.com/snowleopard/hadrian/issues/344.
-- | Topological sort of packages according to their dependencies.
topsortPackages :: [Package] -> Action [Package]
topsortPackages pkgs = do
elems <- mapM (\p -> (p,) <$> stage1Dependencies p) pkgs
return $ map fst $ topSort elems
where
annotateInDeg es e =
(foldr (\e' s -> if fst e' `elem` snd e then s + 1 else s) (0 :: Int) es, e)
topSort [] = []
topSort es =
let annotated = map (annotateInDeg es) es
inDegZero = map snd $ filter ((== 0). fst) annotated
in inDegZero ++ topSort (es \\ inDegZero)
|
