Fix build errors for other platforms

src/DebugConfiguration.cpp

@@ -22,8 +22,11 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.*/
 
+#include "configuration.h"
 #include "DebugConfiguration.h"
 
+#if HAS_WIFI || HAS_ETHERNET
+
 Syslog::Syslog(UDP &client)
 {
     this->_client = &client;
@@ -218,4 +221,6 @@ inline bool Syslog::_sendLog(uint16_t pri, const __FlashStringHelper *message)
     this->_client->endPacket();
 
     return true;
-}
+}
+
+#endif