centos-7.9 build gcc-10.2.0

# dependencies of gcc-10.2.0
sudo yum install -y gmp-devel.x86_64 mpfr-devel.x86_64 libmpc-devel.x86_64

# gcc-10.2.0
curl -O ftp://mirror.easyname.at/gnu/gcc/gcc-10.2.0/gcc-10.2.0.tar.gz
cd gcc-10.2.0
./configure --disable-multilib
make -j8
sudo make install