Wrapped c function in 'extern "C"' to make the library usable in C++

applications.

include/ecrt.h

@@ -327,6 +327,10 @@ typedef enum {
  * Global functions
  *****************************************************************************/
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /** Returns the version magic of the realtime interface.
  *
  * \return Value of ECRT_VERSION_MAGIC() at EtherCAT master compile time.
@@ -1054,6 +1058,12 @@ ec_request_state_t ecrt_voe_handler_execute(
     ec_voe_handler_t *voe /**< VoE handler. */
     );
 
+/*****************************************************************************/
+
+#ifdef __cplusplus
+}
+#endif
+
 /******************************************************************************
  * Bitwise read/write macros
  *****************************************************************************/