linux内核编译错误之交叉编译错误

　　错误：

　　arch/arm/mm/alignment.c: In function 'proc_alignment_write':

　　arch/arm/mm/alignment.c:119: error: read-only variable '__r2' used as 'asm' output

　　arch/arm/mm/alignment.c:119: error: read-only variable '__r2' used as 'asm' output

　　arch/arm/mm/alignment.c:119: error: read-only variable '__r2' used as 'asm' output

　　arch/arm/mm/alignment.c:119: error: read-only variable '__r2' used as 'asm' output

　　make[1]: *** [arch/arm/mm/alignment.o] 错误 1

　　make: *** [arch/arm/mm] 错误 2

　　解决办法：选择较低版本的交叉编译器，比如3.4.1。