This is your nprobe 4.9.4 configuration: Host System Type : i686-pc-linux-gnu Compiler (cflags) : gcc -g -O2 -pipe -DHAVE_CONFIG_H Include path : -I/usr/local/include System Libs : -lresolv -ldl -lpthread Core Libs : -L/usr/local/lib -lpcap Additional Libs : LBL pcap in : /usr/local Install path : /usr/local Now type 'make' or 'gmake' (GNU make) on *BSD and Solaris systems to build . .... autogen.sh done just type make to compile nprobe