Add function to return library version at execute time. Fix Issue 39. Thanks to Zuck for his contribution.

Remove compilation warning due to missing includes in examples.

src/examples/nfc-mfclassic.c

@@ -31,7 +31,9 @@
 #include <ctype.h>
 
 #include "libnfc.h"
+
 #include "mifaretag.h"
+#include "bitutils.h"
 
 static dev_info* pdi;
 static tag_info ti;

src/libnfc.c

@@ -32,6 +32,8 @@
 #include "bitutils.h"
 #include "messages.h"
 
+#include "../config.h"
+
 // Registers and symbols masks used to covers parts within a register
 #define REG_CIU_TX_MODE           0x6302
   #define SYMBOL_TX_CRC_ENABLE      0x80
@@ -996,3 +998,9 @@ bool nfc_target_send_dep_bytes(const dev_info* pdi, const byte_t* pbtTx, const s
   return true;
 }
 
+const char* nfc_version(void)
+{
+  return PACKAGE_VERSION;
+}
+
+

src/libnfc.h

@@ -235,6 +235,13 @@ bool nfc_target_send_bytes(const dev_info* pdi, const byte_t* pbtTx, const size_
  */
 bool nfc_target_send_dep_bytes(const dev_info* pdi, const byte_t* pbtTx, const size_t szTxLen);
 
+/**
+ * @fn const char* nfc_version(void)
+ * @brief Returns the library version
+ * @return Returns a string with the library version
+ */
+const char* nfc_version(void);
+
 #ifdef __cplusplus 
 }
 #endif // __cplusplus