- usethreads=$usethreads useithreads=$useithreads usemultiplicity=$usemultiplicity
- useperlio=$useperlio d_sfio=$d_sfio uselargefiles=$uselargefiles usesocks=$usesocks
- use64bitint=$use64bitint use64bitall=$use64bitall uselongdouble=$uselongdouble
+ useithreads=$useithreads, usemultiplicity=$usemultiplicity
+ useperlio=$useperlio, d_sfio=$d_sfio, uselargefiles=$uselargefiles, usesocks=$usesocks
+ use64bitint=$use64bitint, use64bitall=$use64bitall, uselongdouble=$uselongdouble