GNU libobjc on Darwin

[David Edelsohn]

>>>>> Bill Northcott writes:

Bill> Andrew has proposed some changes that allow GNU libobjc to build on 
Bill> Darwin as libobjc-gnu.   These work for an FSF style build.

Bill> However, on the apple-ppc-darwin branch the same patches don't build 
Bill> the library.
Bill> The cause is an APPLE_LOCAL mod to config/rs6000/darwin.h which 
Bill> redefines ADJUST_FIELD_ALIGN to need three arguments.  This breaks in 
Bill> encoding.c around line 838.  The only other place the macro appears to 
Bill> be used is stor-layout.c.

Bill> I can't make up my mind if this is an Apple bug or an FSF one.

	This is not a bug.  There are two different branches and a macro
that differs between the two branches.  The patch uses the macro and needs
to be adjusted for the change of parameters on the branch.

David