/usr/lib/hugs/packages/Cabal/Distribution/Simple/Configure.hs is in libhugs-cabal-bundled 98.200609.21-5.3.
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-----------------------------------------------------------------------------
-- |
-- Module : Distribution.Simple.Configure
-- Copyright : Isaac Jones 2003-2005
--
-- Maintainer : Isaac Jones <ijones@syntaxpolice.org>
-- Stability : alpha
-- Portability : portable
--
-- Explanation: Perform the \"@.\/setup configure@\" action.
-- Outputs the @.setup-config@ file.
{- All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, 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.Configure (writePersistBuildConfig,
getPersistBuildConfig,
maybeGetPersistBuildConfig,
configure,
localBuildInfoFile,
findProgram,
getInstalledPackages,
configDependency,
configCompiler, configCompilerAux,
)
where
import Distribution.Simple.LocalBuildInfo
import Distribution.Simple.Register (removeInstalledConfig)
import Distribution.Setup(ConfigFlags(..), CopyDest(..))
import Distribution.Compiler(CompilerFlavor(..), Compiler(..),
compilerBinaryName, extensionsToFlags)
import Distribution.Package (PackageIdentifier(..), showPackageId,
parsePackageId)
import Distribution.PackageDescription(
PackageDescription(..), Library(..),
BuildInfo(..), Executable(..), setupMessage )
import Distribution.Simple.Utils (die, warn, withTempFile,maybeExit)
import Distribution.Version (Version(..), Dependency(..), VersionRange(ThisVersion),
parseVersion, showVersion, withinRange,
showVersionRange)
import Data.List (intersperse, nub, maximumBy, isPrefixOf)
import Data.Char (isSpace)
import Data.Maybe(fromMaybe)
import System.Directory
import Distribution.Compat.FilePath (splitFileName, joinFileName,
joinFileExt, exeExtension)
import Distribution.Program(Program(..), ProgramLocation(..),
lookupPrograms, updateProgram)
import System.Cmd ( system )
import System.Exit ( ExitCode(..) )
import Control.Monad ( when, unless )
import Distribution.Compat.ReadP
import Distribution.Compat.Directory (findExecutable)
import Data.Char (isDigit)
import Prelude hiding (catch)
tryGetPersistBuildConfig :: IO (Either String LocalBuildInfo)
tryGetPersistBuildConfig = do
e <- doesFileExist localBuildInfoFile
let dieMsg = "error reading " ++ localBuildInfoFile ++ "; run \"setup configure\" command?\n"
if (not e) then return $ Left dieMsg else do
str <- readFile localBuildInfoFile
case reads str of
[(bi,_)] -> return $ Right bi
_ -> return $ Left dieMsg
getPersistBuildConfig :: IO LocalBuildInfo
getPersistBuildConfig = do
lbi <- tryGetPersistBuildConfig
either die return lbi
maybeGetPersistBuildConfig :: IO (Maybe LocalBuildInfo)
maybeGetPersistBuildConfig = do
lbi <- tryGetPersistBuildConfig
return $ either (const Nothing) Just lbi
writePersistBuildConfig :: LocalBuildInfo -> IO ()
writePersistBuildConfig lbi = do
writeFile localBuildInfoFile (show lbi)
localBuildInfoFile :: FilePath
localBuildInfoFile = "./.setup-config"
-- -----------------------------------------------------------------------------
-- * Configuration
-- -----------------------------------------------------------------------------
configure :: PackageDescription -> ConfigFlags -> IO LocalBuildInfo
configure pkg_descr cfg
= do
setupMessage "Configuring" pkg_descr
removeInstalledConfig
let lib = library pkg_descr
-- detect compiler
comp@(Compiler f' ver p' pkg) <- configCompilerAux cfg
-- installation directories
defPrefix <- default_prefix
defDataDir <- default_datadir pkg_descr
let
pref = fromMaybe defPrefix (configPrefix cfg)
my_bindir = fromMaybe default_bindir
(configBinDir cfg)
my_libdir = fromMaybe (default_libdir comp)
(configLibDir cfg)
my_libsubdir = fromMaybe (default_libsubdir comp)
(configLibSubDir cfg)
my_libexecdir = fromMaybe default_libexecdir
(configLibExecDir cfg)
my_datadir = fromMaybe defDataDir
(configDataDir cfg)
my_datasubdir = fromMaybe default_datasubdir
(configDataSubDir cfg)
-- check extensions
let extlist = nub $ maybe [] (extensions . libBuildInfo) lib ++
concat [ extensions exeBi | Executable _ _ exeBi <- executables pkg_descr ]
let exts = fst $ extensionsToFlags f' extlist
unless (null exts) $ warn $ -- Just warn, FIXME: Should this be an error?
show f' ++ " does not support the following extensions:\n " ++
concat (intersperse ", " (map show exts))
foundPrograms <- lookupPrograms (configPrograms cfg)
happy <- findProgram "happy" (configHappy cfg)
alex <- findProgram "alex" (configAlex cfg)
hsc2hs <- findProgram "hsc2hs" (configHsc2hs cfg)
c2hs <- findProgram "c2hs" (configC2hs cfg)
cpphs <- findProgram "cpphs" (configCpphs cfg)
greencard <- findProgram "greencard" (configGreencard cfg)
let newConfig = foldr (\(_, p) c -> updateProgram p c) (configPrograms cfg) foundPrograms
-- FIXME: currently only GHC has hc-pkg
dep_pkgs <- case f' of
GHC | ver >= Version [6,3] [] -> do
ipkgs <- getInstalledPackagesAux comp cfg
mapM (configDependency ipkgs) (buildDepends pkg_descr)
JHC -> do
ipkgs <- getInstalledPackagesJHC comp cfg
mapM (configDependency ipkgs) (buildDepends pkg_descr)
_ -> do
return $ map setDepByVersion (buildDepends pkg_descr)
split_objs <-
if not (configSplitObjs cfg)
then return False
else case f' of
GHC | ver >= Version [6,5] [] -> return True
_ -> do warn ("this compiler does not support " ++
"--enable-split-objs; ignoring")
return False
let lbi = LocalBuildInfo{prefix=pref, compiler=comp,
buildDir="dist" `joinFileName` "build",
bindir=my_bindir,
libdir=my_libdir,
libsubdir=my_libsubdir,
libexecdir=my_libexecdir,
datadir=my_datadir,
datasubdir=my_datasubdir,
packageDeps=dep_pkgs,
withPrograms=newConfig,
withHappy=happy, withAlex=alex,
withHsc2hs=hsc2hs, withC2hs=c2hs,
withCpphs=cpphs,
withGreencard=greencard,
withVanillaLib=configVanillaLib cfg,
withProfLib=configProfLib cfg,
withProfExe=configProfExe cfg,
withGHCiLib=configGHCiLib cfg,
splitObjs=split_objs,
userConf=configUser cfg
}
-- FIXME: maybe this should only be printed when verbose?
message $ "Using install prefix: " ++ pref
messageDir pkg_descr lbi "Binaries" mkBinDir mkBinDirRel
messageDir pkg_descr lbi "Libraries" mkLibDir mkLibDirRel
messageDir pkg_descr lbi "Private binaries" mkLibexecDir mkLibexecDirRel
messageDir pkg_descr lbi "Data files" mkDataDir mkDataDirRel
message $ "Using compiler: " ++ p'
message $ "Compiler flavor: " ++ (show f')
message $ "Compiler version: " ++ showVersion ver
message $ "Using package tool: " ++ pkg
mapM (\(s,p) -> reportProgram' s p) foundPrograms
reportProgram "happy" happy
reportProgram "alex" alex
reportProgram "hsc2hs" hsc2hs
reportProgram "c2hs" c2hs
reportProgram "cpphs" cpphs
reportProgram "greencard" greencard
return lbi
messageDir :: PackageDescription -> LocalBuildInfo -> String
-> (PackageDescription -> LocalBuildInfo -> CopyDest -> FilePath)
-> (PackageDescription -> LocalBuildInfo -> CopyDest -> Maybe FilePath)
-> IO ()
messageDir pkg_descr lbi name mkDir mkDirRel =
message (name ++ " installed in: " ++ mkDir pkg_descr lbi NoCopyDest ++ rel_note)
where
rel_note = ""
-- |Converts build dependencies to a versioned dependency. only sets
-- version information for exact versioned dependencies.
setDepByVersion :: Dependency -> PackageIdentifier
-- if they specify the exact version, use that:
setDepByVersion (Dependency s (ThisVersion v)) = PackageIdentifier s v
-- otherwise, just set it to empty
setDepByVersion (Dependency s _) = PackageIdentifier s (Version [] [])
-- |Return the explicit path if given, otherwise look for the program
-- name in the path.
findProgram
:: String -- ^ program name
-> Maybe FilePath -- ^ optional explicit path
-> IO (Maybe FilePath)
findProgram name Nothing = findExecutable name
findProgram _ p = return p
reportProgram :: String -> Maybe FilePath -> IO ()
reportProgram name Nothing = message ("No " ++ name ++ " found")
reportProgram name (Just p) = message ("Using " ++ name ++ ": " ++ p)
reportProgram' :: String -> Maybe Program -> IO ()
reportProgram' _ (Just Program{ programName=name
, programLocation=EmptyLocation})
= message ("No " ++ name ++ " found")
reportProgram' _ (Just Program{ programName=name
, programLocation=FoundOnSystem p})
= message ("Using " ++ name ++ " found on system at: " ++ p)
reportProgram' _ (Just Program{ programName=name
, programLocation=UserSpecified p})
= message ("Using " ++ name ++ " given by user at: " ++ p)
reportProgram' name Nothing = message ("No " ++ name ++ " found")
-- | Test for a package dependency and record the version we have installed.
configDependency :: [PackageIdentifier] -> Dependency -> IO PackageIdentifier
configDependency ps (Dependency pkgname vrange) = do
let
ok p = pkgName p == pkgname && pkgVersion p `withinRange` vrange
--
case filter ok ps of
[] -> die ("cannot satisfy dependency " ++
pkgname ++ showVersionRange vrange)
qs -> let
pkg = maximumBy versions qs
versions a b = pkgVersion a `compare` pkgVersion b
in do message ("Dependency " ++ pkgname ++ showVersionRange vrange ++
": using " ++ showPackageId pkg)
return pkg
getInstalledPackagesJHC :: Compiler -> ConfigFlags -> IO [PackageIdentifier]
getInstalledPackagesJHC comp cfg = do
let verbose = configVerbose cfg
when (verbose > 0) $ message "Reading installed packages..."
let cmd_line = "\"" ++ compilerPkgTool comp ++ "\" --list-libraries"
str <- systemCaptureStdout verbose cmd_line
case pCheck (readP_to_S (many (skipSpaces >> parsePackageId)) str) of
[ps] -> return ps
_ -> die "cannot parse package list"
getInstalledPackagesAux :: Compiler -> ConfigFlags -> IO [PackageIdentifier]
getInstalledPackagesAux comp cfg = getInstalledPackages comp (configUser cfg) (configVerbose cfg)
getInstalledPackages :: Compiler -> Bool -> Int -> IO [PackageIdentifier]
getInstalledPackages comp user verbose = do
when (verbose > 0) $ message "Reading installed packages..."
let user_flag = if user then "--user" else "--global"
cmd_line = "\"" ++ compilerPkgTool comp ++ "\" " ++ user_flag ++ " list"
str <- systemCaptureStdout verbose cmd_line
let keep_line s = ':' `notElem` s && not ("Creating" `isPrefixOf` s)
str1 = unlines (filter keep_line (lines str))
str2 = filter (`notElem` ",()") str1
--
case pCheck (readP_to_S (many (skipSpaces >> parsePackageId)) str2) of
[ps] -> return ps
_ -> die "cannot parse package list"
systemCaptureStdout :: Int -> String -> IO String
systemCaptureStdout verbose cmd = do
withTempFile "." "" $ \tmp -> do
let cmd_line = cmd ++ " >" ++ tmp
when (verbose > 0) $ putStrLn cmd_line
res <- system cmd_line
case res of
ExitFailure _ -> die ("executing external program failed: "++cmd_line)
ExitSuccess -> do str <- readFile tmp
let ev [] = ' '; ev xs = last xs
ev str `seq` return str
-- -----------------------------------------------------------------------------
-- Determining the compiler details
configCompilerAux :: ConfigFlags -> IO Compiler
configCompilerAux cfg = configCompiler (configHcFlavor cfg)
(configHcPath cfg)
(configHcPkg cfg)
(configVerbose cfg)
configCompiler :: Maybe CompilerFlavor -> Maybe FilePath -> Maybe FilePath -> Int -> IO Compiler
configCompiler hcFlavor hcPath hcPkg verbose
= do let flavor = case hcFlavor of
Just f -> f
Nothing -> error "Unknown compiler"
comp <-
case hcPath of
Just path -> return path
Nothing -> findCompiler verbose flavor
ver <- configCompilerVersion flavor comp verbose
pkgtool <-
case hcPkg of
Just path -> return path
Nothing -> guessPkgToolFromHCPath verbose flavor comp
return (Compiler{compilerFlavor=flavor,
compilerVersion=ver,
compilerPath=comp,
compilerPkgTool=pkgtool})
findCompiler :: Int -> CompilerFlavor -> IO FilePath
findCompiler verbose flavor = do
let prog = compilerBinaryName flavor
when (verbose > 0) $ message $ "searching for " ++ prog ++ " in path."
res <- findExecutable prog
case res of
Nothing -> die ("Cannot find compiler for " ++ prog)
Just path -> do when (verbose > 0) $ message ("found " ++ prog ++ " at "++ path)
return path
-- ToDo: check that compiler works?
compilerPkgToolName :: CompilerFlavor -> String
compilerPkgToolName GHC = "ghc-pkg"
compilerPkgToolName NHC = "hmake" -- FIX: nhc98-pkg Does not yet exist
compilerPkgToolName Hugs = "hugs"
compilerPkgToolName JHC = "jhc"
compilerPkgToolName cmp = error $ "Unsupported compiler: " ++ (show cmp)
configCompilerVersion :: CompilerFlavor -> FilePath -> Int -> IO Version
configCompilerVersion GHC compilerP verbose = do
str <- systemGetStdout verbose ("\"" ++ compilerP ++ "\" --version")
case pCheck (readP_to_S parseVersion (dropWhile (not.isDigit) str)) of
[v] -> return v
_ -> die ("cannot determine version of " ++ compilerP ++ ":\n "++ str)
configCompilerVersion JHC compilerP verbose = do
str <- systemGetStdout verbose ("\"" ++ compilerP ++ "\" --version")
case words str of
(_:ver:_) -> case pCheck $ readP_to_S parseVersion ver of
[v] -> return v
_ -> fail ("parsing version: "++ver++" failed.")
_ -> fail ("reading version string: "++show str++" failed.")
configCompilerVersion _ _ _ = return Version{ versionBranch=[],versionTags=[] }
systemGetStdout :: Int -> String -> IO String
systemGetStdout verbose cmd = do
withTempFile "." "" $ \tmp -> do
let cmd_line = cmd ++ " >" ++ tmp
when (verbose > 0) $ putStrLn cmd_line
maybeExit $ system cmd_line
str <- readFile tmp
let eval [] = ' '; eval xs = last xs
eval str `seq` return str
pCheck :: [(a, [Char])] -> [a]
pCheck rs = [ r | (r,s) <- rs, all isSpace s ]
guessPkgToolFromHCPath :: Int -> CompilerFlavor -> FilePath -> IO FilePath
guessPkgToolFromHCPath verbose flavor path
= do let pkgToolName = compilerPkgToolName flavor
(dir,_) = splitFileName path
pkgtool = dir `joinFileName` pkgToolName `joinFileExt` exeExtension
when (verbose > 0) $ message $ "looking for package tool: " ++ pkgToolName ++ " near compiler in " ++ path
exists <- doesFileExist pkgtool
when (not exists) $
die ("Cannot find package tool: " ++ pkgtool)
when (verbose > 0) $ message $ "found package tool in " ++ pkgtool
return pkgtool
message :: String -> IO ()
message s = putStrLn $ "configure: " ++ s
-- -----------------------------------------------------------------------------
-- Tests
|