#define JTAGKEY_VREF 0x20
#define JTAGKEY_OEn 0x10
-int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num);
-int jtagkey_open(int num);
-void jtagkey_close(int handle);
+int __attribute__ ((visibility ("hidden"))) jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num);
+int __attribute__ ((visibility ("hidden"))) jtagkey_open(int num);
+void __attribute__ ((visibility ("hidden"))) jtagkey_close(int handle);