系統是rhel 5.5,目前的gcc是4.1.2linux
1.下載源碼包c++
tar -jxvf gcc-4.8.2.tar.bz2
cd gcc-4.8.2
./contrib/download_prerequisites
cd ..
mkdir gcc-build-4.8.2
cd gcc-build-4.8.2
../gcc-4.8.2/configure --enable-checking=release --enable-languages=c,c++ --disable-multilib
make -j4