ObjC configured --with-objc-gc needs external Boehm gc

Tue Jan 16 15:25:00 GMT 2001

Boehm, Hans writes:
 > I can't think of any fundamental problems. I suspect Objective C normally
 > wants the collector built to recognize all interior pointers, where gcj
 > builds it without that option, so that interior pointers are recognized only
 > if they're on a stack. This is currently a build time option, but that
 > probably doesn't save very much anymore over making it a runtime option.
 > 
 > Does Objective C normally use the collector with thread support? 
The ObjC runtime can be built with thread support. I am not aware of
applications needing thread and gc support. The gnustep core libraries
(www.gnustep.org) are built with thread support only. The
gnustep-extensions defines support for garbage collected objects.