我有64位Ubuntu 14.04。我尝试安装从haskell.org（debian build）下载的64位GHC 7.8.2二进制文件。我在make install上收到以下错误消息：
Warning: cannot determine version of
/home/kutta/home/software/ghc-7.8.2inst/lib/ghc-7.8.2/bin/ghc :
""
Warning: cannot determine version of
/home/kutta/home/software/ghc-7.8.2inst/lib/ghc-7.8.2/bin/ghc-pkg :
""
ghc-cabal: ghcInvocation: the programVersion must not be Nothing
make[1]: *** [install_packages] Error 1
make: *** [install] Error 2
请注意，我将我的安装目录设置为自定义目录，但是当我将其保留为默认值时，我会收到相同的错误。任何补救措施？