🚀 go-pugleaf

gcc 2.3.1 on an IBM RT running AOS (4.3BSD), configured as romp-aos,
doesn't compile cleanly for me using hc: I get errors on the files that
include obstack.h, by virtue of the lines (around line 130):

#if defined (__STDC__) && ! defined (offsetof)
...
#include <stddef.h>
...
#endif

The hc compiler defines __STDC__ and yet there is no <stddef.h> on the
system.  This is obviously a deficiency in the system, but I think it
needs to be worked around somehow, so the compiler can be bootstrapped.
Perhaps the RT/AOS config files should define offsetof, I don't know.

I linked gstddef.h to stddef.h so I could proceed with the compilation,
which worked ok until gcc.c was compiled, when there was conflict
between <sys/types.h> and the renamed gstddef.h.  I just compiled that
file with my previous gcc, and everything went ok.