# Define gnutls as a system library
conf.SET_TARGET_TYPE('gnutls', 'SYSLIB')
+# Check for gnutls_privkey_export_x509 (>= 3.4.0) required by backupkey
+conf.CHECK_FUNCS_IN('gnutls_privkey_export_x509', 'gnutls')
+
# Check for gnutls_x509_crt_set_subject_unique_id (>= 3.4.7) required by backupkey
conf.CHECK_FUNCS_IN('gnutls_x509_crt_set_subject_unique_id', 'gnutls')