编译内核错误

# make ARCH=arm CROSS_COMPILE=arm-mix410-linux- uImage
  HOSTLD  scripts/dtc/dtc
/usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x10): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x0): first defined here
collect2: error: ld returned 1 exit status
make[2]: *** [scripts/Makefile.host:99: scripts/dtc/dtc] Error 1
make[1]: *** [scripts/Makefile.build:544: scripts/dtc] Error 2
make: *** [Makefile:1069: scripts] Error 2

解决方法，在以下文件添加extern

        scripts/dtc/dtc-lexer.lex