CentOS7 安装 gcc-4.9.0


下载gcc-4.9.0.tar.bz2,解压,/opt/gcc-4.9.0

自动下载gcc编译的依赖项
[root@localhost gcc-4.9.0]# ./contrib/download_prerequisites

[root@localhost gcc-4.9.0]# ./configure --prefix=/usr/gcc-4.9.0 --enable-languages=c,c++ --disable-multilib
--disable-multilib不生成编译为其他平台可执行代码的交叉编译器
--enable-languages让gcc支持那些语言

[root@localhost gcc-4.9.0]# make -j4

[root@localhost gcc-4.9.0]# make install


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原文地址:https://www.cnblogs.com/ztguang/p/12648794.html