背景
在64位系统上编译32位可执行程序时出现报错，
[root@CentOS-7-2 /home/register]# gcc -g -m32 test.c -o testIn file included from /usr/include/features.h:399:0,from /usr/include/stdio.h:27,from test.c:1:/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory# include <gnu/stubs-32.h>^compilation terminated.
解决方案
缺少头文件，使用yum provides命令查询哪个组件可以提供该头文件即可，
[root@CentOS-7-2 /home/register]# yum provides */stubs-32.hLoaded plugins: fastestmirror, langpacksLoading mirror speeds from cached hostfile* epel: fedora.cs.nctu.edu.tw* epel-source: fedora.cs.nctu.edu.twglibc-devel-2.17-260.el7.i686 : Object files for development using standard C libraries.Repo : baseMatched from:Filename : /usr/include/gnu/stubs-32.h
可见，安装glibc-devel组件即可。但是要注意的是，因为是在64位机器上，因此如果执行以下命令来安装，
yum install -y glibc-devel
最终安装的是x86_64架构的组件，因此需要制定组件全名，
yum install -y glibc-devel-2.17-260.el7.i686
安装结束后，编译OK，
[root@CentOS-7-2 /home/register]# gcc -g -m32 test.c -o test[root@CentOS-7-2 /home/register]# ls. .. test test.c[root@CentOS-7-2 /home/register]# file testtest: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=9fe99fd19a1bcc860ce4cd14ad08c12df6a9, not stripped
