Ken Brown wrote:
> Paul, any idea why SYS_renameat2 would be undefined on openSUSE 12.3 x86_64?

Haven't a clue, but the workaround should be easy enough. I installed the 
attached; please give it a try. If some platform other than Cygwin starts 
supporting renameat2 we can put a test into configure.ac and change "defined 
CYGWIN" to "HAVE_RENAME2".