dev_callbacks_list should only get compiled into the libnfc library, not in every client application. (Thanks to snapdev)

src/libnfc.c

@@ -24,6 +24,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 #include <stddef.h>
 #include <string.h>
 
+#include "devices.h"
+
 #include "bitutils.h"
 
 // Registers and symbols masks used to covers parts within a register

src/libnfc.h

@@ -27,7 +27,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 #include "defines.h"
 #include "types.h"
 #include "bitutils.h"
-#include "devices.h"
 
 dev_info* nfc_connect(void);
 void nfc_disconnect(dev_info* pdi);