signature MLTON_PLATFORM =
   sig
      structure Arch:
         sig
            datatype t = Alpha | AMD64 | ARM | HPPA | IA64 | m68k 
                       | MIPS | PowerPC | S390 | Sparc | X86

            val fromString: string -> t option
            val host: t
            val toString: t -> string
         end
         
      structure OS:
         sig
            datatype t = AIX | Cygwin | Darwin | FreeBSD | HPUX 
                       | Linux | MinGW | NetBSD | OpenBSD | Solaris

            val fromString: string -> t option
            val host: t
            val toString: t -> string
         end
   end

• datatype Arch.t
  processor architectures

• Arch.fromString a
  converts from string to architecture. Case insensitive.

• Arch.host
  the architecture for which the program is compiled.

• Arch.toString
  string for architecture.

• datatype OS.t
  operating systems

• OS.fromString
  converts from string to operating system. Case insensitive.

• OS.host
  the operating system for which the program is compiled.

• OS.toString
  string for operating system.