DIR alpha-dec-osf1v4.0
   DIR alpha-unknown-linux
   DIR hppa-hp-hpux
   DIR mips-sgi-irix
   DIR ppc-unknown-linux
   DIR sparc-sun-solaris
   DIR x86-bsdi-bsdos
   DIR x86-sco-openserver
   DIR x86-sun-solaris
   DIR x86-unknown-freebsd