-SRD_PRIV int srd_log(int loglevel, const char *format, ...);
-SRD_PRIV int srd_spew(const char *format, ...);
-SRD_PRIV int srd_dbg(const char *format, ...);
-SRD_PRIV int srd_info(const char *format, ...);
-SRD_PRIV int srd_warn(const char *format, ...);
-SRD_PRIV int srd_err(const char *format, ...);
+#if defined(G_OS_WIN32) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+/*
+ * On MinGW, we need to specify the gnu_printf format flavor or GCC
+ * will assume non-standard Microsoft printf syntax.
+ */
+SRD_PRIV int srd_log(int loglevel, const char *format, ...)
+ __attribute__((__format__ (__gnu_printf__, 2, 3)));
+#else
+SRD_PRIV int srd_log(int loglevel, const char *format, ...) G_GNUC_PRINTF(2, 3);
+#endif
+
+#define srd_spew(...) srd_log(SRD_LOG_SPEW, __VA_ARGS__)
+#define srd_dbg(...) srd_log(SRD_LOG_DBG, __VA_ARGS__)
+#define srd_info(...) srd_log(SRD_LOG_INFO, __VA_ARGS__)
+#define srd_warn(...) srd_log(SRD_LOG_WARN, __VA_ARGS__)
+#define srd_err(...) srd_log(SRD_LOG_ERR, __VA_ARGS__)
+
+/* decoder.c */
+SRD_PRIV long srd_decoder_apiver(const struct srd_decoder *d);
+
+/* type_decoder.c */
+SRD_PRIV PyObject *srd_Decoder_type_new(void);
+
+/* type_logic.c */
+SRD_PRIV PyObject *srd_logic_type_new(void);
+
+/* module_sigrokdecode.c */
+PyMODINIT_FUNC PyInit_sigrokdecode(void);