Re: [Haskell-cafe] Haskeline, pcre-light, iconv and Cabal on OSX

On Sun, Feb 1, 2009 at 10:04 AM, Antoine Latter wrote:

On Sun, Feb 1, 2009 at 12:01 PM, Thomas Davie wrote:

...

This is caused by OS X's libiconv being entirely CPP macros, the FFI has nothing to get hold of. IIRC there's a ghc bug report open for it.

Bob

So why does it sometimes work? I can write and compile executables using haskeline, both with 'ghc --make' and 'cabal configure && cabal build'.

This sounds like something I can patch haskeline to account for, then?

The OS X system libiconv is actually OK; it's the MacPorts libiconv that has the CPP macros. When the cabal package depends on pcre-light it pulls in all of pcre-light's options; and like me, you probably compiled pcre-light to link against /opt/local/lib. To confirm this I ran "ghc --make -L/opt/local/lib test.hs" on my OS X machine and saw the same error as you. Thanks for the report; I'm not sure of what the right solution is, but I opened a ticket on Haskeline's bug tracker: http://trac.haskell.org/haskeline/ticket/74 Feel free to add comments, propose a fix or suggest a workaround. -Judah