- configure options: * improved and extended configure options to reduce necessity to switch features on and off in the nsf.h. Optional Features: --enable-profile build nsf with profile support (default disabled) --enable-memcount=yes|trace build nsf with memcount debug support (default disabled) --enable-development build nsf with development support (assertion checking, etc.; default disabled) Optional Packages: --with-dtrace build nsf with dtrace (default: without)