make[2]: Entering directory `/home/kjetil/ettercap-NG-0.7.0/src' gcc -DHAVE_CONFIG_H -I. -I. -I../include -O2 -funroll-loops -fomit-frame-pointer -Wall -I/usr/include/pcap -g -O2 -c -o ettercap-ec_capture.o `test -f 'ec_capture.c' || echo './'`ec_capture.c ec_capture.c: In function `capture_init': ec_capture.c:192: warning: implicit declaration of function `pcap_datalink_val_to_description' ec_capture.c: In function `capture_getifs': ec_capture.c:286: `pcap_if_t' undeclared (first use in this function) ec_capture.c:286: (Each undeclared identifier is reported only once ec_capture.c:286: for each function it appears in.) ec_capture.c:286: `dev' undeclared (first use in this function) ec_capture.c:286: `pdev' undeclared (first use in this function) ec_capture.c:286: `ndev' undeclared (first use in this function) ec_capture.c:286: warning: left-hand operand of comma expression has no effect ec_capture.c:286: warning: left-hand operand of comma expression has no effect ec_capture.c:287: parse error before `char' ec_capture.c:292: warning: implicit declaration of function `pcap_findalldevs' ec_capture.c:292: parse error before `)' ec_capture.c:292: `pcap_errbuf' undeclared (first use in this function) ec_capture.c:296: parse error before `)' ec_capture.c:302: `PCAP_IF_LOOPBACK' undeclared (first use in this function) make[2]: *** [ettercap-ec_capture.o] Error 1 make[2]: Leaving directory `/home/kjetil/ettercap-NG-0.7.0/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/kjetil/ettercap-NG-0.7.0/src' make: *** [all-recursive] Error 1