Hi Anyone got any hints as to why this linkage error is occurring (GHC 6.12.3, Mac OSX 10.6 (and 10.5 has same issue)): cabal install haskelldb-hdbc-odbc --enable-documentation --root-cmd=sudo --global Resolving dependencies... Configuring haskelldb-hdbc-odbc-0.13... Preprocessing library haskelldb-hdbc-odbc-0.13... Preprocessing executables for haskelldb-hdbc-odbc-0.13... Building haskelldb-hdbc-odbc-0.13... [1 of 1] Compiling Database.HaskellDB.HDBC.ODBC ( Database/HaskellDB/HDBC/ODBC.hs, dist/build/Database/HaskellDB/HDBC/ODBC.o ) Registering haskelldb-hdbc-odbc-0.13... [1 of 2] Compiling Database.HaskellDB.HDBC.ODBC ( Database/HaskellDB/HDBC/ODBC.hs, dist/build/DBDirect-hdbc-odbc/DBDirect-hdbc-odbc-tmp/Database/HaskellDB/HDBC/ODBC.o ) [2 of 2] Compiling Main ( DBDirect.hs, dist/build/DBDirect-hdbc-odbc/DBDirect-hdbc-odbc-tmp/Main.o ) Linking dist/build/DBDirect-hdbc-odbc/DBDirect-hdbc-odbc ... Undefined symbols: "_CFBundleCopyResourceURL", referenced from: _SQLDriverConnect_Internal in libodbc.a(connect.o) "___CFConstantStringClassReference", referenced from: cfstring=org.iodbc.core in libodbc.a(connect.o) cfstring=iODBCadm.bundle in libodbc.a(connect.o) "_CFURLCopyFileSystemPath", referenced from: _SQLDriverConnect_Internal in libodbc.a(connect.o) "_CFRelease", referenced from: _SQLDriverConnect_Internal in libodbc.a(connect.o) _SQLDriverConnect_Internal in libodbc.a(connect.o) "_CFStringGetCString", referenced from: _SQLDriverConnect_Internal in libodbc.a(connect.o) "_CFBundleGetBundleWithIdentifier", referenced from: _SQLDriverConnect_Internal in libodbc.a(connect.o) ld: symbol(s) not found collect2: ld returned 1 exit status cabal: Error: some packages failed to install: haskelldb-hdbc-odbc-0.13 failed during the building phase. The exception was: ExitFailure 1 Hints gratefully received!... Cheers Neil