我刚从github克隆了u-boot
https://github.com/u-boot/u-boot.git
并尝试使用随机选择的defconfig（特别是hikey_defconfig）构建它。
export ARCH=arm
export CROSS_COMPILE=/opt/linaro-7.2.1-2017.11/bin/arm-linux-gnueabi-
make hikey_defconfig
make all
这会在一段时间后出现以下错误：
{standard input}: Assembler messages:
{standard input}:36: Error: unexpected character `n' in type specifier
{standard input}:36: Error: bad instruction `b.ne 1b'
scripts/Makefile.build:280: recipe for target 'arch/arm/cpu/armv8/cpu.o' failed
make[1]: *** [arch/arm/cpu/armv8/cpu.o] Error 1
Makefile:1320: recipe for target 'arch/arm/cpu/armv8' failed
make: *** [arch/arm/cpu/armv8] Error 2
看起来像汇编程序错误。我做错了什么？