N.C. Gen. Stat. § 8-74
In all criminal actions, hearings and investigations it shall be lawful for the defendant in any such action to make affidavit before the clerk of the superior court of the county in which said action is pending, that it is important for the defense that he have the testimony of any person, whose name must be given, and that such person is so infirm, or otherwise physically incapacitated, or nonresident of this State, that he cannot procure his attendance at the trial or hearing of said cause. Upon the filing of such affidavit, it shall be the duty of the clerk to appoint some responsible person to take the deposition of such witness, which deposition may be read in the trial of such criminal action under the same rules as now apply by law to depositions in civil actions: provided, that the district attorney or prosecuting attorney of the district, county or town in which such action is pending have 10 days' notice of the taking of such deposition, who may appear in person or by representative to conduct the cross-examination of such witness.
N.C. Gen. Stat. § 8-74