linux gcc 4.9.1,centos 6.5 安装gcc 4.9.1
解压$tar -xvzf gcc-4.9.1.tar.gz$cd gcc-4.9.1下载依赖库$./contrib/download_prerequisites$cd ..$mkdir gcc-build-4.9.1$cd gcc-build-4.9.1$../gcc-4.9.1/configure --enable-checking=release --enable-languages=c,...
