|
| 1 | +\begin{code} |
| 2 | +{-# LANGUAGE CPP #-} |
| 3 | +#ifndef MIN_VERSION_Cabal |
| 4 | +#define MIN_VERSION_Cabal(x,y,z) 0 |
| 5 | +#endif |
| 6 | +#ifndef MIN_VERSION_directory |
| 7 | +#define MIN_VERSION_directory(x,y,z) 0 |
| 8 | +#endif |
| 9 | +#if MIN_VERSION_Cabal(1,24,0) |
| 10 | +#define InstalledPackageId UnitId |
| 11 | +#endif |
| 12 | +module Main (main) where |
| 13 | +
|
| 14 | +import Control.Monad ( when ) |
| 15 | +import Data.List ( nub ) |
| 16 | +import Distribution.Package ( InstalledPackageId ) |
| 17 | +import Distribution.Package ( PackageId, Package (..), packageVersion ) |
| 18 | +import Distribution.PackageDescription ( PackageDescription(), TestSuite(..) , Library (..), BuildInfo (..)) |
| 19 | +import Distribution.Simple ( defaultMainWithHooks, UserHooks(..), simpleUserHooks ) |
| 20 | +import Distribution.Simple.Utils ( rewriteFile, createDirectoryIfMissingVerbose ) |
| 21 | +import Distribution.Simple.BuildPaths ( autogenModulesDir ) |
| 22 | +import Distribution.Simple.Setup ( BuildFlags(buildDistPref, buildVerbosity), fromFlag) |
| 23 | +import Distribution.Simple.LocalBuildInfo ( withPackageDB, withLibLBI, withTestLBI, LocalBuildInfo(), ComponentLocalBuildInfo(componentPackageDeps), compiler ) |
| 24 | +import Distribution.Simple.Compiler ( showCompilerId , PackageDB (..)) |
| 25 | +import Distribution.Text ( display , simpleParse ) |
| 26 | +import System.FilePath ( (</>) ) |
| 27 | +
|
| 28 | +#if MIN_VERSION_Cabal(1,25,0) |
| 29 | +import Distribution.Simple.BuildPaths ( autogenComponentModulesDir ) |
| 30 | +#endif |
| 31 | +
|
| 32 | +#if MIN_VERSION_directory(1,2,2) |
| 33 | +import System.Directory (makeAbsolute) |
| 34 | +#else |
| 35 | +import System.Directory (getCurrentDirectory) |
| 36 | +import System.FilePath (isAbsolute) |
| 37 | +
|
| 38 | +makeAbsolute :: FilePath -> IO FilePath |
| 39 | +makeAbsolute p | isAbsolute p = return p |
| 40 | + | otherwise = do |
| 41 | + cwd <- getCurrentDirectory |
| 42 | + return $ cwd </> p |
| 43 | +#endif |
| 44 | +
|
| 45 | +main :: IO () |
| 46 | +main = defaultMainWithHooks simpleUserHooks |
| 47 | + { buildHook = \pkg lbi hooks flags -> do |
| 48 | + generateBuildModule flags pkg lbi |
| 49 | + buildHook simpleUserHooks pkg lbi hooks flags |
| 50 | + } |
| 51 | +
|
| 52 | +generateBuildModule :: BuildFlags -> PackageDescription -> LocalBuildInfo -> IO () |
| 53 | +generateBuildModule flags pkg lbi = do |
| 54 | + let verbosity = fromFlag (buildVerbosity flags) |
| 55 | + let distPref = fromFlag (buildDistPref flags) |
| 56 | +
|
| 57 | + -- Package DBs |
| 58 | + let dbStack = withPackageDB lbi ++ [ SpecificPackageDB $ distPref </> "package.conf.inplace" ] |
| 59 | + let dbFlags = "-hide-all-packages" : packageDbArgs dbStack |
| 60 | +
|
| 61 | + withLibLBI pkg lbi $ \lib libcfg -> do |
| 62 | + let libBI = libBuildInfo lib |
| 63 | +
|
| 64 | + -- modules |
| 65 | + let modules = exposedModules lib ++ otherModules libBI |
| 66 | + -- it seems that doctest is happy to take in module names, not actual files! |
| 67 | + let module_sources = modules |
| 68 | +
|
| 69 | + -- We need the directory with library's cabal_macros.h! |
| 70 | +#if MIN_VERSION_Cabal(1,25,0) |
| 71 | + let libAutogenDir = autogenComponentModulesDir lbi libcfg |
| 72 | +#else |
| 73 | + let libAutogenDir = autogenModulesDir lbi |
| 74 | +#endif |
| 75 | +
|
| 76 | + -- Lib sources and includes |
| 77 | + iArgs <- mapM (fmap ("-i"++) . makeAbsolute) $ libAutogenDir : hsSourceDirs libBI |
| 78 | + includeArgs <- mapM (fmap ("-I"++) . makeAbsolute) $ includeDirs libBI |
| 79 | +
|
| 80 | + -- CPP includes, i.e. include cabal_macros.h |
| 81 | + let cppFlags = map ("-optP"++) $ |
| 82 | + [ "-include", libAutogenDir ++ "/cabal_macros.h" ] |
| 83 | + ++ cppOptions libBI |
| 84 | +
|
| 85 | + -- Actually we need to check whether testName suite == "doctests" |
| 86 | + -- pending https://github.com/haskell/cabal/pull/4229 getting into GHC HEAD tree |
| 87 | + withTestLBI pkg lbi $ \suite suitecfg -> when (testName suite == "doctests") $ do |
| 88 | +
|
| 89 | + -- get and create autogen dir |
| 90 | +#if MIN_VERSION_Cabal(1,25,0) |
| 91 | + let testAutogenDir = autogenComponentModulesDir lbi suitecfg |
| 92 | +#else |
| 93 | + let testAutogenDir = autogenModulesDir lbi |
| 94 | +#endif |
| 95 | + createDirectoryIfMissingVerbose verbosity True testAutogenDir |
| 96 | +
|
| 97 | + -- write autogen'd file |
| 98 | + rewriteFile (testAutogenDir </> "Build_doctests.hs") $ unlines |
| 99 | + [ "module Build_doctests where" |
| 100 | + , "" |
| 101 | + -- -package-id etc. flags |
| 102 | + , "pkgs :: [String]" |
| 103 | + , "pkgs = " ++ (show $ formatDeps $ testDeps libcfg suitecfg) |
| 104 | + , "" |
| 105 | + , "flags :: [String]" |
| 106 | + , "flags = " ++ show (iArgs ++ includeArgs ++ dbFlags ++ cppFlags) |
| 107 | + , "" |
| 108 | + , "module_sources :: [String]" |
| 109 | + , "module_sources = " ++ show (map display module_sources) |
| 110 | + ] |
| 111 | + where |
| 112 | + -- we do this check in Setup, as then doctests don't need to depend on Cabal |
| 113 | + isOldCompiler = maybe False id $ do |
| 114 | + a <- simpleParse $ showCompilerId $ compiler lbi |
| 115 | + b <- simpleParse "7.5" |
| 116 | + return $ packageVersion (a :: PackageId) < b |
| 117 | +
|
| 118 | + formatDeps = map formatOne |
| 119 | + formatOne (installedPkgId, pkgId) |
| 120 | + -- The problem is how different cabal executables handle package databases |
| 121 | + -- when doctests depend on the library |
| 122 | + | packageId pkg == pkgId = "-package=" ++ display pkgId |
| 123 | + | otherwise = "-package-id=" ++ display installedPkgId |
| 124 | +
|
| 125 | + -- From Distribution.Simple.Program.GHC |
| 126 | + packageDbArgs :: [PackageDB] -> [String] |
| 127 | + packageDbArgs | isOldCompiler = packageDbArgsConf |
| 128 | + | otherwise = packageDbArgsDb |
| 129 | +
|
| 130 | + -- GHC <7.6 uses '-package-conf' instead of '-package-db'. |
| 131 | + packageDbArgsConf :: [PackageDB] -> [String] |
| 132 | + packageDbArgsConf dbstack = case dbstack of |
| 133 | + (GlobalPackageDB:UserPackageDB:dbs) -> concatMap specific dbs |
| 134 | + (GlobalPackageDB:dbs) -> ("-no-user-package-conf") |
| 135 | + : concatMap specific dbs |
| 136 | + _ -> ierror |
| 137 | + where |
| 138 | + specific (SpecificPackageDB db) = [ "-package-conf=" ++ db ] |
| 139 | + specific _ = ierror |
| 140 | + ierror = error $ "internal error: unexpected package db stack: " |
| 141 | + ++ show dbstack |
| 142 | +
|
| 143 | + -- GHC >= 7.6 uses the '-package-db' flag. See |
| 144 | + -- https://ghc.haskell.org/trac/ghc/ticket/5977. |
| 145 | + packageDbArgsDb :: [PackageDB] -> [String] |
| 146 | + -- special cases to make arguments prettier in common scenarios |
| 147 | + packageDbArgsDb dbstack = case dbstack of |
| 148 | + (GlobalPackageDB:UserPackageDB:dbs) |
| 149 | + | all isSpecific dbs -> concatMap single dbs |
| 150 | + (GlobalPackageDB:dbs) |
| 151 | + | all isSpecific dbs -> "-no-user-package-db" |
| 152 | + : concatMap single dbs |
| 153 | + dbs -> "-clear-package-db" |
| 154 | + : concatMap single dbs |
| 155 | + where |
| 156 | + single (SpecificPackageDB db) = [ "-package-db=" ++ db ] |
| 157 | + single GlobalPackageDB = [ "-global-package-db" ] |
| 158 | + single UserPackageDB = [ "-user-package-db" ] |
| 159 | + isSpecific (SpecificPackageDB _) = True |
| 160 | + isSpecific _ = False |
| 161 | +
|
| 162 | +testDeps :: ComponentLocalBuildInfo -> ComponentLocalBuildInfo -> [(InstalledPackageId, PackageId)] |
| 163 | +testDeps xs ys = nub $ componentPackageDeps xs ++ componentPackageDeps ys |
| 164 | +
|
| 165 | +\end{code} |
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