make: unifdef for other OSes (undefined)

*** 922,936 ****
          Name            value;
          int             set_host, set_target;
  #ifdef NSE
          Property        macro;
  #endif
- #if defined(linux)
-         const char      *mach_command = NOCATGETS("/bin/uname -p");
- #else
          const char      *mach_command = NOCATGETS("/bin/mach");
- #endif
  
          set_host = (get_prop(host_arch->prop, macro_prop) == NULL);
          set_target = (get_prop(target_arch->prop, macro_prop) == NULL);
  
          if (set_host || set_target) {
--- 922,932 ----
*** 1377,1402 ****
                          new_value = old_vr;
                  } else {
                          new_value = ALLOC_WC(length);
                          new_value_allocated = true;
                          WCSTOMBS(mbs_buffer, old_vr);
- #if !defined(linux)
                          (void) wsprintf(new_value,
                                          NOCATGETS("/usr/arch/%s/%s:%s"),
                                          ha->string_mb + 1,
                                          ta->string_mb + 1,
                                          mbs_buffer);
- #else
-                         char * mbs_new_value = (char *)getmem(length);
-                         (void) sprintf(mbs_new_value,
-                                         NOCATGETS("/usr/arch/%s/%s:%s"),
-                                         ha->string_mb + 1,
-                                         ta->string_mb + 1,
-                                         mbs_buffer);
-                         MBSTOWCS(new_value, mbs_new_value);
-                         retmem_mb(mbs_new_value);
- #endif
                  }
                  if (new_value[0] != 0) {
                          (void) setvar_daemon(virtual_root,
                                               GETNAME(new_value, FIND_LENGTH),
                                               false,
--- 1373,1387 ----