Changes to allow it to compile in FreeBSD and fix a few issues that were picked up by clang 10.

definitions.h

@@ -1,14 +1,9 @@
 #ifndef _DEFINITIONS_H
 #define _DEFINITIONS_H
 
-//#include <libconfig.h>
-//#include <signal.h>
-//#include <stdint.h>
 #include <sys/socket.h>
 
-//#include "audio.h"
 #include "config.h"
-//#include "mdns.h"
 
 #if defined(__APPLE__) && defined(__MACH__)
 /* Apple OSX and iOS (Darwin). ------------------------------ */
@@ -23,6 +18,18 @@
 #define COMPILE_FOR_LINUX_AND_FREEBSD_AND_CYGWIN_AND_OPENBSD 1
 #endif
 
+#if defined(__linux__)
+#define COMPILE_FOR_LINUX 1
+#endif
+
+#if defined(__FreeBSD__) || defined(__OpenBSD__)
+#define COMPILE_FOR_BSD 1
+#endif
+
+#if defined(__FreeBSD__)
+#define COMPILE_FOR_FREEBSD 1
+#endif
+
 // struct sockaddr_in6 is bigger than struct sockaddr. derp
 #ifdef AF_INET6
 #define SOCKADDR struct sockaddr_storage