[嵌入式]在mips 64-bit系统上编译32-bit程序

环境

• 基于debian的uos系统
• mips 架构
• 64 bit系统

安装gcc-multilib

sudo apt install gcc-multilib
如果不安装这个包将会报错：

$ gcc 1.c -mabi=32
In file included from 1.c:4:
/usr/include/stdio.h:27:10: fatal error: bits/libc-header-start.h: 没有那个文件或目录
 #include <bits/libc-header-start.h>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~

编译32为程序需要添加的gcc 选项

示例

$ echo 'main(){}' | gcc -x c  -o test -

$ file test
test: ELF 64-bit LSB executable, MIPS, MIPS64 rel2 version 1 (SYSV), dynamically linked, interpreter /lib64/ld.so.1, BuildID[sha1]=eb7499a0bf2e6bed2a1e26f5e399b1d2d02b0ced, for GNU/Linux 3.2.0, not stripped

gcc加上-mabi=32选项

$ echo 'main(){}' | gcc -x c  -o test - -mabi=32

$ file test
test: ELF 32-bit LSB executable, MIPS, MIPS32 rel2 version 1 (SYSV), dynamically linked, interpreter /lib/ld.so.1, for GNU/Linux 3.2.0, BuildID[sha1]=ec1fc4cefa462dcdd5468207422b5a41ed749831, not stripped