对于 openSUSE Tumbleweed，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:gns3/openSUSE_Tumbleweed/home:mnhauke:gns3.repo
zypper refresh
zypper install cpp33
对于 15.4，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:gns3/15.4/home:mnhauke:gns3.repo
zypper refresh
zypper install cpp33
对于 15.3，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:gns3/15.3/home:mnhauke:gns3.repo
zypper refresh
zypper install cpp33