+typedef GMimeTrust GMimeCertificateTrust;
+
+#define GMIME_CERTIFICATE_TRUST_UNKNOWN GMIME_TRUST_UNKNOWN
+#define GMIME_CERTIFICATE_TRUST_UNDEFINED GMIME_TRUST_UNDEFINED
+#define GMIME_CERTIFICATE_TRUST_NEVER GMIME_TRUST_NEVER
+#define GMIME_CERTIFICATE_TRUST_MARGINAL GMIME_TRUST_MARGINAL
+#define GMIME_CERTIFICATE_TRUST_FULLY GMIME_TRUST_FULL
+#define GMIME_CERTIFICATE_TRUST_ULTIMATE GMIME_TRUST_ULTIMATE
+
+#define g_mime_2_6_unref(obj) /*ignore*/
+#define g_mime_3_unused(arg) unused(arg)