libstdc++4.4.74.el6.x86_64.rpm

安装gcc-c++提示错误，yum源有问题，通过离线方式安装 ErrorDownloadingPackages: gcc-c++-4.4.7-4.el6.x86_64:failure:Packages/gcc-c++-4.4.7-4.el6.x86_64.rpmfrommy:[Errno256]Nomoremirrorstotry. libstdc++-devel-4.4.7-4.el6.x86_64:failure:Packages/libstdc++-devel-4.4.7-4.el6.x86_64.rpmfrommy:[Errno256]N