(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:ld)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (command_sub
                  left_token: (Token id:Id.Left_Backtick val:'`' span_id:2)
                  command_list: (command.CommandList children:[(C {(head)} {(-1)} {(conf-ld)})])
                )
              )
            }
          spids: [0]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:systype)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (command_sub
                  left_token: (Token id:Id.Left_Backtick val:'`' span_id:15)
                  command_list: (command.CommandList children:[(C {(cat)} {(systype)})])
                )
              )
            }
          spids: [13]
        )
      ]
    )
    (C {(cat)} {(warn-auto.sh)})
    (C {(echo)} {(SQ (Token id:Id.Lit_Chars val:'main="$1"; shift' span_id:32))})
    (C {(echo)} {(exec)} {(DQ ($ Id.VSub_DollarName '$ld'))} 
      {(SQ (Token id:Id.Lit_Chars val:'-o "$main" "$main".o ${1+"$@"}' span_id:44))}
    )
  ]
)