Added the --disable-dot11 configure switch.

src/dot11/dot11_beacon.cpp

@@ -27,9 +27,11 @@
  *
  */  
 
+#include "dot11/dot11_beacon.h"
+#ifdef HAVE_DOT11
+
 #include <cstring>
 #include <cassert>
-#include "dot11/dot11_beacon.h"
 
 namespace Tins {
  /* Dot11Beacon */
@@ -76,4 +78,6 @@ uint32_t Dot11Beacon::write_fixed_parameters(uint8_t *buffer, uint32_t total_sz)
     std::memcpy(buffer, &this->_body, sz);
     return sz;
 }
-} // namespace Tins
+} // namespace Tins
+
+#endif // HAVE_DOT11