http://ftp.tsukuba.wide.ad.jp/software/gcc/releases/gcc-4.8.1/
tar -zxvf gcc-4.8.1.tar.gz
1 cd gcc-4.8.1 2 ./contrib/download_prerequisites
mkdir gcc-build-4.8.1
1 cd gcc-build-4.8.1 2 3 ../gcc-4.8.1/configure --enable-checking=release --enable-languages=c,c++ --disable-multilib
make -j4
make install
g++ --version
原文：http://www.cnblogs.com/gouge/p/7098652.html