| >My first real difficulty has to do with "atomic clear".  The build
| >requires it:
| >
| >ingres/src/cl/hdr/hdr_unix_win/csnormal.h:2621:11: 
| >	#error : must define an atomic clear

  Perhaps have a look was postgres has done, they have atomic ops
for every platform, maybe you can borrow from there?

	mjl