Building GCC

cd ~
git clone https://gcc.gnu.org/git/gcc.git gcc
cd gcc
git checkout releases/gcc-16.1
./contrib/download_prerequisites
 
cd ~
mkdir gcc-16.1-build
../gcc/configure --prefix=/usr/local --program-suffix=-16.1 --disable-multilib --enable-languages=c,c++,fortran
 
make -j$(nproc)
sudo make install