--- a/configure.in 2015-03-25 15:37:31.953386365 +0000 +++ b/configure.in 2015-03-25 15:39:49.192183689 +0000 @@ -182,6 +182,8 @@ AC_SUBST(HMAC_OBJS) dnl Checking for PCAP +AC_ARG_ENABLE([pcap], AS_HELP_STRING([--disable-pcap], [Build without `pcap' library (-lpcap)])) +AS_IF([test "x$enable_pcap" != "xno"], [ AC_CHECK_LIB([pcap],[pcap_create], [PCAP=1 LIBS="-lpcap $LIBS" @@ -189,6 +191,7 @@ AC_DEFINE(HAVE_PCAP, 1, [Define to 1 if you have the `pcap' library (-lpcap)]) AC_SUBST(HAVE_PCAP) ]) +]) AC_MSG_CHECKING(whether to use syslog for error reporting) AC_ARG_ENABLE(syslog,