【已解决】编译Linux内核报错multiple definition of yylloc

问题描述

在学习正点原子的驱动开发指南过程中，在编译Linux内核时出现以下报错，内核文件为：linux-imx-rel_imx_4.1.15_2.1.0_ga。

./mx6ull_alientek_emmc.sh文件内容如下

#!/bin/sh
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- distclean
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- imx_v7_defconfig
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- all -j16

 报错信息如下：

In file included from include/linux/kernel.h:11,
                 from include/asm-generic/bug.h:13,
                 from ./arch/arm/include/asm/bug.h:61,
                 from include/linux/bug.h:4,
                 from include/linux/page-flags.h:9,
                 from kernel/bounds.c:9:
include/linux/log2.h:22:1: warning: ignoring attribute ‘noreturn’ because it conflicts with attribute ‘const’ [-Wattributes]
   22 | int ____ilog2_NaN(void);
      | ^~~
  CHK     include/generated/bounds.h
  UPD     include/generated/bounds.h
  CC      arch/arm/kernel/asm-offsets.s
In file included from include/linux/kernel.h:11,
                 from include/linux/sched.h:17,
                 from arch/arm/kernel/asm-offsets.c:14:
include/linux/log2.h:22:1: warning: ignoring attribute ‘noreturn’ because it conflicts with attribute ‘const’ [-Wattributes]
   22 | int ____ilog2_NaN(void);
      | ^~~
  CHK     include/generated/asm-offsets.h
  UPD     include/generated/asm-offsets.h
  CALL    scripts/checksyscalls.sh
  HOSTLD  scripts/dtc/dtc
/usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x50): 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:100：scripts/dtc/dtc] 错误 1
make[1]: *** [scripts/Makefile.build:403：scripts/dtc] 错误 2
make[1]: *** 正在等待未完成的任务....
  HOSTLD  scripts/genksyms/genksyms
  HOSTLD  scripts/mod/modpost
make: *** [Makefile:556：scripts] 错误 2
make: *** 正在等待未完成的任务....
txj@txj-virtual-machine:~/IMX6ULL/linux_core/linux-imx-rel_imx_4.1.15_2.1.0_ga$

解决方案

需要gcc设置为gcc-9的版本，笔者原先是gcc-12版本无法正常编译。

安装gcc指令

sudo apt install gcc-9

 更新 update-alternatives 配置

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 30

 选择默认版本

sudo update-alternatives --config gcc

如果还不行请尝试以下方法：

重新下载了arm-linux-gnueabihf-gcc

gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf.tar 

通过百度网盘分享的文件：gcc-linaro-4.9.4-2017.01-x86_64_arm...
链接：https://pan.baidu.com/s/1tdF7qalld4E86S3kc9-dAQ?pwd=us5v 
提取码：us5v 
--来自百度网盘超级会员V5的分享

步骤如下：

将文件拷贝到Ubuntu根目录下的tools文件中

sudo mkdir /usr/local/arm

sudo cp gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf.tar.xz /usr/local/arm/ -f

sudo tar -vxf gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf.tar.xz

sudo vi /etc/profile

export PATH=$PATH:/usr/local/arm/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin

sudo apt-get install lsb-core lib32stdc++6

sudo reboot

arm-linux-gnueabihf-gcc -v

 gcc版本为下图，为安装成功。

 这个时候再运行一次./mx6ull_alientek_emmc.sh 应该就能够正常编译了。

如果gcc版本还是原来的，需要先删除先前的arm-linux-gnueabihf-gcc再重新进行上面的步骤。

which arm-linux-gnueabihf-gcc-<version>，找到文件的路径，备份一下，然后删除它即可。