CentOS6.5升级GCC4.8.2

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wget http://ftp.gnu.org/gnu/gcc/gcc-4.8.2/gcc-4.8.2.tar.bz2

tar -jxvf gcc-4.8.2.tar.bz2

cd gcc-4.8.2　
./contrib/download_prerequisites

mkdir gcc-build-4.8.2

cd gcc-build-4.8.2

../configure --prefix=/usr -enable-checking=release -enable-languages=c,c++ -disable-multilib

make

make install

gcc -v