port install arm-none-eabi-gcc
port install arm-none-eabi-binutils
我在我的mac上下载了arm工具。
export CCPREFIX=/opt/local/bin/arm-none-eabi-
make ARCH=arm CROSS_COMPILE=${CCPREFIX}
however it has alot of errors.
tcpdump.c:180: error: ‘struct tcphdr’ has no member named ‘source’
tcpdump.c:238: error: ‘ETH_P_A