bzip2-devel-1.0.6-12.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/bzip2-devel-1.0.6-13.el7.i686.rpm
C++pp-4.8.5-44.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/cpp-4.8.5-44.el7.x86_64.rpm
gcc-4.8.5-44.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/gcc-4.8.5-44.el7.x86_64.rpm
gcc-C++-4.8.2-16.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/gcc-c++-4.8.5-44.el7.x86_64.rpm
glibc-2.17-317.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/glibc-2.17-317.el7.x86_64.rpm
glibc-common-2.17-317.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/glibc-common-2.17-317.el7.x86_64.rpm
glibc-devel-2.17-317.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/glibc-devel-2.17-317.el7.x86_64.rpm
glibc-headers-2.17-317.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/glibc-headers-2.17-317.el7.x86_64.rpm
glibc-static-2.17-317.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/glibc-static-2.17-317.el7.x86_64.rpm
kernel-headers-3.10.0-1160.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/kernel-headers-3.10.0-1160.el7.x86_64.rpm
libmpc-1.0.1-3.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/libmpc-1.0.1-3.el7.x86_64.rpm
libstdc++-4.8.2-16.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/libstdc++-4.8.5-44.el7.x86_64.rpm
libstdc++-devel-4.8.2-16.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/libstdc++-devel-4.8.5-44.el7.x86_64.rpm
mpfr-3.1.1-4.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/mpfr-3.1.1-4.el7.x86_64.rpm
ncurses-devel-5.9-13.20130511.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/ncurses-devel-5.9-14.20130511.el7_4.x86_64.rpm
zlib-devel-1.2.7-13.el7.x86_64.rpm 快速下载地址：https://vault.centos.org/7.9.2009/os/x86_64/Packages/zlib-devel-1.2.7-18.el7.x86_64.rpm
rpm -ivh *.rpm --nodeps --force
提示：--nodeps：表示不检查依赖关系；--force：表示强制安装。
gcc -v
【1】【明矾】【CentOS7离线安装GCC】【博客园】【2020-03-11】