centos7升级gcc和g++到9.4.0

下载gcc包:
https://mirrors.aliyun.com/gnu/gcc/ 本博客使用的是这个网站下载
https://ftp.gnu.org/gnu/gcc/
报:tar (child): bzip2:无法 exec: 没有那个文件或目录
缺少包,执行:
yum -y install bzip2
make时报这个错误是因为gcc g++有组建没装完整,执行:
yum install gcc gcc-c++
参考这个连接:
https://blog.csdn.net/weixin_42427540/article/details/117114611?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522164878998716780255276983%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=164878998716780255276983&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2allfirst_rank_ecpm_v1~rank_v31_ecpm-14-117114611.142v5pc_search_result_cache&utm_term=centos7%E5%AE%89%E8%A3%85gcc+9.4.0&spm=1018.2226.3001.4187

或者这个:
http://wfeii.com/2021/01/25/centos7-gcc10.html

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转载自blog.csdn.net/weixin_43466192/article/details/123900465