#1407: Add the ability to :set -l{foo} in .ghci files ----------------------------------------+----------------------------------- Reporter: guest | Owner: igloo Type: feature request | Status: new Priority: normal | Milestone: _|_ Component: GHCi | Version: 6.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Easy (less than 1 hour) | Testcase: Blockedby: | Blocking: Related: | ----------------------------------------+----------------------------------- Comment(by igloo): This works: {{{ $ ghci -lz GHCi, version 7.7.20130112: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading object (dynamic) /usr/lib/gcc/x86_64-linux- gnu/4.4.5/../../../../lib/libz.so ... done final link ... done Prelude> import Foreign.C Prelude Foreign.C> import Foreign.Ptr Prelude Foreign.C Foreign.Ptr> foreign import ccall "zlibVersion" z :: IO CString Prelude Foreign.C Foreign.Ptr> z >>= peekCString "1.2.3.4" Prelude Foreign.C Foreign.Ptr> }}} This doesn't: {{{ $ ghci GHCi, version 7.7.20130112: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :set -lz Prelude> import Foreign.C Prelude Foreign.C> import Foreign.Ptr Prelude Foreign.C Foreign.Ptr> foreign import ccall "zlibVersion" z :: IO CString ByteCodeLink: can't find label During interactive linking, GHCi couldn't find the following symbol: zlibVersion This may be due to you not asking GHCi to load extra object files, archives or DLLs needed by your current session. Restart GHCi, specifying the missing library using the -L/path/to/object/dir and -lmissinglibname flags, or simply by naming the relevant files on the GHCi command line. Alternatively, this link failure might indicate a bug in GHCi. If you suspect the latter, please send a bug report to: glasgow-haskell-bugs@haskell.org }}} -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/1407#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler