GNU Objective-C/libFoundation on MacOSX README
==============================================

Intro
=====

    It doesn't work out of the box to compile libFoundation on
    Darwin or MacOSX, primarily because the default compiler
    produces binaries for the Apple ObjC runtime which libFoundation
    doesn't seem to support anymore.

GNU Runtime
===========

    To get a working GNU runtime, you should first fetch & compile 
    GCC 3.2, this worked out-of-the-box in OSX 10.1.5.

GNUstep Makefiles
=================

    I only tried with GNUstep Makefiles (libFoundation theoretically
    can compile without them ...)

Configuration
=============

    Before invoking configure you need to set the following environment
    variables:

      export CFLAGS="-traditional-cpp -fgnu-runtime"
      export OBJC_RUNTIME_FLAG="-fgnu-runtime"
      export LDFLAGS="-L/usr/local/gcc32/lib/"
      export CC="/usr/local/gcc32/bin/gcc"
      export OBJC_LIBS="/usr/local/gcc32/lib/libobjc.a"
      export LIBS="/usr/local/gcc32/lib/libobjc.a"
    
    at least this worked for me ;-)

    Then you can call configure:
    
      ./configure --with-gnustep

    Ensure that configure recognized the GNU runtime:

      checking for the Objective-C runtime... GNU

    REALLY! ;-) Also ensure that these ObjC things are found:
    
      checking for objc_mutex_allocate... yes
      checking for objc_malloc... yes

    Otherwise something is still wrong ...

TO BE COMPLETED
  - currently I get a lot of weird gcc 3.2 debugging output
    during compilation ..., so didn't get it working yet

---
2002-08-16
Helge Hess (hh@skyrix.com)
SKYRIX Software AG

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