Help on installation

[jolek]

============
In file included from /usr/include/libnet.h:120,
from ec_capture.c:31:
/usr/include/./libnet/libnet-types.h:36:23: ../config.h: No such file or directory
make[2]: *** [ettercap-ec_capture.o] Error 1
make[2]: Leaving directory `/home/jolek/download/ettercap-NG-0.7.2/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jolek/download/ettercap-NG-0.7.2/src'
make: *** [all-recursive] Error 1
[***@jolek ettercap-NG-0.7.2]#
============

Libnet are installed in my system in /usr/include/libnet/.

Thanks a lot and sorry for my question.