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{- Linux library copier and binary shimmer
-
- Copyright 2013 Joey Hess <id@joeyh.name>
-
- License: BSD-2-clause
-}
module Utility.LinuxMkLibs where
import Control.Applicative
import Data.Maybe
import System.Directory
import System.FilePath
import Data.List.Utils
import System.Posix.Files
import Data.Char
import Control.Monad.IfElse
import Utility.PartialPrelude
import Utility.Directory
import Utility.Process
import Utility.Monad
import Utility.Path
{- Installs a library. If the library is a symlink to another file,
- install the file it links to, and update the symlink to be relative. -}
installLib :: (FilePath -> FilePath -> IO ()) -> FilePath -> FilePath -> IO (Maybe FilePath)
installLib installfile top lib = ifM (doesFileExist lib)
( do
installfile top lib
checksymlink lib
return $ Just $ parentDir lib
, return Nothing
)
where
checksymlink f = whenM (isSymbolicLink <$> getSymbolicLinkStatus (inTop top f)) $ do
l <- readSymbolicLink (inTop top f)
let absl = absPathFrom (parentDir f) l
target <- relPathDirToFile (takeDirectory f) absl
installfile top absl
nukeFile (top ++ f)
createSymbolicLink target (inTop top f)
checksymlink absl
-- Note that f is not relative, so cannot use </>
inTop :: FilePath -> FilePath -> FilePath
inTop top f = top ++ f
{- Parse ldd output, getting all the libraries that the input files
- link to. Note that some of the libraries may not exist
- (eg, linux-vdso.so) -}
parseLdd :: String -> [FilePath]
parseLdd = mapMaybe (getlib . dropWhile isSpace) . lines
where
getlib l = headMaybe . words =<< lastMaybe (split " => " l)
{- Get all glibc libs and other support files, including gconv files
-
- XXX Debian specific. -}
glibcLibs :: IO [FilePath]
glibcLibs = lines <$> readProcess "sh"
["-c", "dpkg -L libc6:$(dpkg --print-architecture) libgcc1:$(dpkg --print-architecture) | egrep '\\.so|gconv'"]
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