Compile DPDK in ARMv8 machine

Hardware: D05 board.
System: Linux 157 4.11.0-45.el7.aarch64 aarch64 GNU/Linux
CentOS Linux release 7.4.1708 (AltArch)

0. download dpdk codes
   git clone git://dpdk.org/dpdk

1. install kernel header files
   yum install kernel-headers.aarch64

2. install libpcap
   yum install libpcap-devel.aarch64

3. install numa header files
   yum install numactl-devel.aarch64

4. config and make
   make config T=arm64-armv8a-linuxapp-gcc
   make

   Note: above will put compiled files to dpdk/build

   “make install T=arm64-armv8a-linuxapp-gcc” will create a directory
   named as arm64-armv8a-linuxapp-gcc under dpdk and put compiled files
   in it.

5. build the dpdk helloworld example:

   export RTE_SDK=~/repos/dpdk
   export RTE_TARGET=arm64-armv8a-linuxapp-gcc
   cd examples/helloworld/
   make

   note: should use "make install T=arm64-armv8a-linuxapp-gcc" in step4
         above to avoid compile error in step5.

6. test helloworld in above build:

   (1) enable hugepage

   echo 2 > /sys/kernel/mm/hugepages/hugepages-524288kB/nr_hugepages
   grep -i huge /proc/meminfo
   AnonHugePages:         0 kB
   ShmemHugePages:        0 kB
   HugePages_Total:       2
   HugePages_Free:        1
   HugePages_Rsvd:        0
   HugePages_Surp:        0
   Hugepagesize:     524288 kB

   (2) run ./helloworld -c 3 -n 2 in examples/helloworld

   EAL: Detected 64 lcore(s)
   EAL: Detected 4 NUMA nodes
   EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
   EAL: No free hugepages reported in hugepages-524288kB
   EAL: No free hugepages reported in hugepages-524288kB
   EAL: 10 hugepages of size 2097152 reserved, but no mounted hugetlbfs found for that size
   EAL: Probing VFIO support...
   EAL: PCI device 0002:e9:00.0 on NUMA socket -1
   EAL:   Invalid NUMA socket, default to 0
   EAL:   probe driver: 8086:10fb net_ixgbe
   EAL: PCI device 0002:e9:00.1 on NUMA socket -1
   EAL:   Invalid NUMA socket, default to 0
   EAL:   probe driver: 8086:10fb net_ixgbe
   hello from core 1
   hello from core 0