gentoo-overlay/net-analyzer/cbm/files/cbm-0.1-gcc-4.7.patch

--- a/src/cbm.cpp
+++ b/src/cbm.cpp
@@ -18,6 +18,7 @@
 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <net/if.h>
+#include <unistd.h>
 
 // Externs
 extern int optind, opterr, optopt;