编译busybox错误

最新推荐文章于 2024-03-06 10:41:47 发布

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最新推荐文章于 2024-03-06 10:41:47 发布

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本文解决嵌入式系统中遇到的两个常见编译问题：一是ipsvd/tcpudp.c文件中write函数返回值被忽略的警告，通过在netfilter.h头文件中包含netinet/in.h解决；二是iptunnel.o文件中未定义引用到__cpu_to_be16的错误，通过在iptunnel.c文件中包含asm/byteorder.h解决。

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1.错误一

ipsvd/tcpudp.c: In function 'tcpudpsvd_main':

ipsvd/tcpudp.c:314:10: warning: ignoring return value of 'write', declared with attribute warn_unused_result

make[1]: *** [ipsvd/tcpudp.o] 错误1

make: *** [ipsvd] 错误2

解决办法：cd /usr/local/arm/4.4.3/arm-none-linux-gnueabi/sys-root/usr/include/linux 找到netfilter.h 头文件，

执行sudo vi netfilter.h 打开加入#include <netinet/in.h>头文件即解决

2.错误二

networking/libiproute/lib.a(iptunnel.o): In function `print_tunnel':
iptunnel.c:(.text.print_tunnel+0x1ec): undefined reference to `__cpu_to_be16'
iptunnel.c:(.text.print_tunnel+0x200): undefined reference to `__cpu_to_be16'
iptunnel.c:(.text.print_tunnel+0x238): undefined reference to `__cpu_to_be16'
iptunnel.c:(.text.print_tunnel+0x24c): undefined reference to `__cpu_to_be16'
iptunnel.c:(.text.print_tunnel+0x26c): undefined reference to `__cpu_to_be16'
networking/libiproute/lib.a(iptunnel.o):iptunnel.c:(.text.print_tunnel+0x290): more undefined references to `__cpu_to_be16' follow
collect2: ld returned 1 exit status
make: *** [busybox_unstripped] Error 1
linux@linux-my:~/u_boot/busybox-1.7.0$ cd /usr/local/arm/4.4.3/
解决办法：

修改 networking/libiproute/iptunnel.c文件
在#include <asm/types.h>

后面加上
#include <asm/byteorder.h>