S.D. Codified Laws § 7-16-2
The circuit court, whenever there shall be no state's attorney for the county or when the state's attorney is absent or unable to attend to his duties or is adversely interested or disqualified, may appoint, by an order to be entered in the minutes of the court, some duly licensed attorney and counselor at law to perform for the time being the duties required by law to be performed by the state's attorney and the person so appointed shall thereupon be vested with all the powers of such state's attorney for that purpose; and the circuit court shall, by an order in the minutes of the court, fix his fees therefor, which amount shall be allowed by the board of county commissioners and when so ordered by the court shall be deducted from the salary of the state's attorney. Nothing in this section shall be so construed as to give the court power to permanently fill vacancies in such office.
SDCL 7-16-2