[Haskell-cafe] Problems building lambdabot on osx

[bobzhang]

Hi, there is a conflict between ghc' libiconv and Ports installed libiconv.
make sure first sudo port deactivate -f libiconv
then install again, it should work.
however, it is very ugly since your other port installed libraries needs 
libiconv, like gnuplot, so when you need port installed libiconv,
sudo port activate -f libiconv again.


于 11-8-8 下午9:38, Adam Turoff 写道:
> I've tried off and on the last couple of days to build Lambdabot on Mac OS X
> (before and after the upgrade from 10.6 to 10.7) and I keep running into linker
> errors with the 64-bit Haskell Platform (ghc 7.0.3).
>
> First, there's the issue with linking against libiconv, which is solved this
> way:
>
> 	cabal install --extra-lib-dirs=/usr/lib
>
> That leaves a whole mess of link errors against libHSreadline:
>
> 	Linking dist/build/lambdabot/lambdabot ...
> 	ld: warning: could not create compact unwind for _ffi_call_unix64: does not use RBP or RSP based frame
> 	Undefined symbols for architecture x86_64:
> 	  "_rl_insert_completions", referenced from:
> 	      _readlinezm1zi0zi1zi0_SystemziConsoleziReadline_zdwa5_info in libHSreadline-1.0.1.0.a(Readline.o)
> 	  "_rl_possible_completions", referenced from:
> 	      _readlinezm1zi0zi1zi0_SystemziConsoleziReadline_zdwa7_info in libHSreadlin
>
> (full error report at http://hpaste.org/50036 )
>
> I did manage to install readline through macports:
>
> 	$ port installed readline
> 	The following ports are currently installed:
> 	  readline @6.2.000_0 (active)
>
> 	$ file /opt/local/lib/libreadline.dylib
> 	/opt/local/lib/libreadline.dylib: Mach-O 64-bit dynamically linked shared library x86_64
>
> and I did manage to get readline installed properly by specifying the
> include/lib dirs from macports:
>
> 	cabal install readline --configure-option=--with-readline-libraries=/opt/local/lib --configure-option=--with-readline-includes=/opt/local/include
>
> and readline does work in ghci:
>
> 	$ ghci
> 	GHCi, version 7.0.3: http://www.haskell.org/ghc/  :? for help
> 	Prelude>  :m + System.Console.Readline
> 	Prelude System.Console.Readline>  readline "testing>  "
> 	testing>  exit
> 	exit
> 	Just "exit"
> 	Prelude System.Console.Readline>
>
> The only issue, which has me stumped, is that lambdabot can't seem to find the
> readline dependency.  Adding the --with-readline options when trying to build
> lambdabot has no effect.  Neither does adding --extra-lib-dirs=/opt/local/lib
> to cabal install.
>
> Anyone have a clue where to start to work around this?  Would switching to ghc
> HEAD help here?
>
> Thanks,
>
> -- Adam