centos升级gcc

1、

sudo yum install centos-release-scl
sudo yum search devtoolset | grep gcc
sudo yum install devtoolset-11-gcc*
sudo source /opt/rh/devtoolset-11/enable
source /opt/rh/devtoolset-11/enable

2、

git clone git://gcc.gnu.org/git/gcc.git
cd gcc
./contrib/download_prerequisites
mkdir -p build
cd build
../configure --prefix=/usr/local/gcc --enable-checking=release --enable-languages=c,c++ --disable-multilib
make
sudo make install
export PATH=/usr/local/gcc/bin/:$PATH
export LD_LIBRARY_PATH=/usr/local/gcc/lib64:$LD_LIBRARY_PATH

$ gcc --version
gcc (GCC) 13.0.0 20221029 (experimental)
$ c++ --version
c++ (GCC) 13.0.0 20221029 (experimental)