3.2 测试 Contiki 安装环境

　　我们先检查工具链是否正常。MSP430 的工具链可以以如下方式检查：

msp430-gcc --version
msp430-gcc (GCC) 4.7.0 20120322 (mspgcc dev 20120716)
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

　　对于ARM Cortex-M3 的工具链：

arm-gcc-none-eabi-gcc --version
arm-none-eabi-gcc (GNU Tools for ARM Embedded Processors) 4.9.3 20150529 (release) ARM/embedded-4_9-branch revision 224288]
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.