yum install gmp-devel mpmr-devel libmpc-devel -y
wget ftp://ftp.gnu.org:21/gnu/gcc/gcc-9.2.0/gcc-9.2.0.tar.gz
tar zxvf gcc-9.2.0.tar.gz
cd gcc-9.2.0
./configure --disable-multilib --enable-languages=c,c++ --prefix=$HOME/local
make -j10
make -j install
# 检查libstdc++.so版本
strings $HOME/local/lib64/libstdc++.so.6|grep CXXABI
# 设置环境变量
export PATH=/root/local/bin:$PATH
export LD_LIBRARY_PATH=/root/local/lib64