Want to use vs2017 development on CentOS6.8 c + + programs, due to the use of c + + 11, want to install on CentOS6.8 GCC and g + + 4.8.5,
The ali yum source, but found that almost all yum operation prompt can not find the url, with the system default yum source also is same,
Then download GCC RPM package, loading is also dependent on,

Whether CentOS6 does not maintain? Evaluate methods so far available, or can solve vs2017 abbreviation on CentOS6 Linux c + + 11,