I wrote:
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...
That was for GHC 6.6.1, the current binary release version for my platform. Judah Jacobson wrote:
The readline package was changed in 6.8 to link with the framework automatically... you can just download version 1.0.1
Well, I just finished compiling 6.8.2 using MacPorts (thanks for that port!). There I have the opposite problem with linking - some symbols are doubly defined. Again, the problem goes away when I specify -framework GNUreadline 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/libexec/gcc/i686-apple-darwin8/4.0.1/ld: warning multiple definitions of symbol _BC /opt/local/lib/libreadline.dylib(terminal.so) definition of _BC /opt/local/lib/libncurses.dylib(lib_termcap.o) definition of _BC /usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: warning multiple definitions of symbol _UP /opt/local/lib/libreadline.dylib(terminal.so) definition of _UP /opt/local/lib/libncurses.dylib(lib_termcap.o) definition of _UP /usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: warning multiple definitions of symbol _PC /opt/local/lib/libreadline.dylib(terminal.so) definition of _PC /opt/local/lib/libncurses.dylib(lib_tputs.o) definition of _PC $ ghc --make -framework GNUreadline fooText.hs Linking fooText ... $ Here are the package desciption and otool for that build: a$ ghc-pkg describe readline name: readline version: 1.0.1.0 license: GPL copyright: maintainer: libraries@haskell.org stability: homepage: package-url: description: More information on readline can be found at http://www.gnu.org/directory/readline.html. category: author: exposed: True exposed-modules: System.Console.Readline System.Console.SimpleLineEditor hidden-modules: import-dirs: /opt/local/lib/ghc-6.8.2/lib/readline-1.0.1.0 library-dirs: /opt/local/lib/ghc-6.8.2/lib/readline-1.0.1.0 hs-libraries: HSreadline-1.0.1.0 extra-libraries: readline ncurses extra-ghci-libraries: include-dirs: /opt/local/lib/ghc-6.8.2/lib/readline-1.0.1.0/include includes: HsReadline.h depends: base-3.0.1.0 process-1.0.0.0 hugs-options: cc-options: -I/opt/local/include ld-options: -L/opt/local/lib framework-dirs: frameworks: haddock-interfaces: /opt/local/share/doc/ghc/libraries/readline/readline.haddock haddock-html: /opt/local/share/doc/ghc/libraries/readline $ otool -L /opt/local/lib/ghc-6.8.2/ghc-6.8.2 /opt/local/lib/ghc-6.8.2/ghc-6.8.2: /opt/local/lib/libreadline.5.2.dylib (compatibility version 5.0.0, current version 5.2.0) /opt/local/lib/libncurses.5.dylib (compatibility version 5.0.0, current version 5.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.3.9) /opt/local/lib/libgmp.3.dylib (compatibility version 8.0.0, current version 8.2.0)