打开bashrc文件：vim /root/.bashrc，加入如下代码：
export CROSS_COMPILE=arm-xilinx-linux-gnueabi-
export PATH=/disk_ext/opt/Xilinx_2015.4/SDK/2015.4/gnu/arm/lin:$PATH
source /disk_ext/opt/Xilinx_2015.4/SDK/2015.4/settings64.sh
最后一行注意修改sh文件解决awk的错误提示。
参考资料：
http://www.wiki.xilinx.com/Install+Xilinx+tools
The Xilinx tools provide the following cross toolchains:
| Target Architecture | x-tool prefix |
| Zynq-7000 (CodeSourcery - soft float) | arm-xilinx-linux-gnueabi- |
| Zynq-7000 (Linaro - hard float) | arm-linux-gnueabihf- |
| Zynq UltraScale+ MPSoC (ZynqMP) | aarch64-linux-gnu- |
| Microblaze little endian | microblazeel-xilinx-linux-gnu- |
| Microblaze big endian | microblaze-xilinx-linux-gnu- |
| PowerPC | powerpc-eabi- |