On Mac OS X 10.4, I can't link programs that use readline unless I explicitly specify the GNUreadline framework on the ghc command line: $ ghc --make fooText.hs [4 of 5] Compiling FooText ( FooText.hs, FooText.o ) [5 of 5] Compiling Main ( fooText.hs, fooText.o ) Linking fooText ... /usr/bin/ld: Undefined symbols: _rl_initialize _rl_unbind_key _add_history _readline collect2: ld returned 1 exit status $ ghc --make -framework GNUreadline fooText.hs Linking fooText ... $ Note that this happens for programs that explicitly use System.Console.Readline, not in general ghc use. Manuel M T Chakravarty wrote:
Did you specify -package readline?
-package readline doesn't help. It only compiles if I say -framework GNUreadline.
The readline package spec should include the framework option (if not, its a bug in the config of the readline package IMO).
OK, I'll copy this to the libraries list then. Thanks, Yitz