步驟如下：
$ cd
$ wget https://github.com/steward-fu/website/releases/download/xt897/gcc-4.9.tar.gz
$ tar xvf gcc-4.9.tar.gz
$ sudo mv gcc-4.9 /opt
$ export PATH=/opt/gcc-4.9/bin:$PATH
$ arm-linux-gnueabihf-gcc -v
gcc version 4.9.4 (Linaro GCC 4.9-2017.01)
$ wget https://github.com/steward-fu/website/releases/download/xt897/cm10.2_kernel.tar.gz
$ wget https://github.com/steward-fu/website/releases/download/xt897/cm10.2_kernel_config
$ tar xvf cm10.2_kernel.tar.gz
$ cd kernel
$ cp ../cm10.2_kernel_config .config
$ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make zImage -j4
net/sunrpc/svcauth_unix.c:610:2: warning: ‘gids’ may be used uninitialized in this function [-Wmaybe-uninitialized]
error, forbidden warning: svcauth_unix.c:610
$ vim net/sunrpc/svcauth_unix.c +582
int gids=0;
$ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make zImage -j4
include/linux/sunrpc/cache.h:272:2: warning: ‘rv’ may be used uninitialized in this function [-Wmaybe-uninitialized]
error, forbidden warning: cache.h:272
$ vim include/linux/sunrpc/cache.h +264
int rv=0;
$ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make zImage -j4