arm64 build libpcap

cd /tmp
export PCAPV=1.10.1
wget http://www.tcpdump.org/release/libpcap-$PCAPV.tar.gz
tar -zxvf libpcap-$PCAPV.tar.gz
cd libpcap-$PCAPV
export CC=aarch64-linux-gnu-gcc
./configure --host=aarch64-linux --with-pcap=linux
make 
#记得装flex bison 删除多余的manifest和syso文件