Octave fails to build on 64-bit OSX w/ FLTK

[Jarno Rajahalme]

I have reported this before, and I have a better fix that requires a change to 
FLTK (which I have proposed there), but in the meanwhile this needs to be 
addressed:

There is a typedef/Class name clash between OSX system headers and Octave. It 
seems to me that this SHOULD affect 32-bit builds as well, but I have not 
tested that.

OSX header 
/System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/Headers/Lists.h
 has this:

typedef Point                           Cell;

Which breaks Octave class declarations of type "class Cell;" resulting in 
compile error:

./ov.h: At global scope:
./ov.h:46: error: using typedef-name ‘Cell’ after ‘class’

Fortunately the file Lists.h is not needed for using FLTK, at least not for 
64-bit builds (*), so this compile error can be avoided by having the following 
in the CPPFLAGS when calling configure:

"-D__LISTS__"

This has the effect of not including the offending OSX include file when 
building octave. After this the build succeeds (3.3.91), with only the known 
mapper failure. I compiled with the Apple gcc-4.2, using my blas wrapper 
library and all other dependencies from macports (compiled with 
gcc43/gcc44/gcc45).

At the minimum this should be addressed in README.MacOS

  Jarno

(*) Comment from Lists.h:

/*
 *  List Manager
 *  
 *  Discussion:
 *    The List Manager is deprecated in Mac OS X 10.5 and later, and is
 *    not included in the 64-bit version of HIToolbox. Applications
 *    should use the Data Browser instead of the List Manager.
 */
typedef Point                           Cell;
...