Has anyone else had problems with the ruby 1.9.1 development headers on 
OS X?

$ echo '#include "ruby.h"' >main.c
$ gcc -c main.c
In file included from /Users/jeff/usr/include/ruby/ruby.h:1125,
                  from /Users/jeff/usr/include/ruby.h:32,
                  from main.c:1:
/Users/jeff/usr/include/ruby/missing.h:35: error: redefinition of 
Ń‘truct timespec$