Centos 7 安装gcc 5.4.0

CentOS Linux release 7.9.2009 系统安装自带的gcc 编译器是4.8.5 版本的不支持c++11 编译一些库的时候需要高版本的gcc编译器

安装依赖

解压 .tar.bz2 依赖库

yum -y install bzip2

编译 gcc 5.4.0依赖库

yum install gcc-c++

下载脚本

脚本源地址：gcc-5.4.0-install.sh

echo "Downloading gcc source files..."
curl https://ftp.gnu.org/gnu/gcc/gcc-5.4.0/gcc-5.4.0.tar.bz2 -O

echo "extracting files..."
tar xvfj gcc-5.4.0.tar.bz2

echo "Installing dependencies..."
yum install gmp-devel mpfr-devel libmpc-devel

echo "Configure and install..."
mkdir gcc-5.4.0-build
cd gcc-5.4.0-build
../gcc-5.4.0/configure --enable-languages=c,c++ --disable-multilib
make -j$(nproc) && make install # note: nproc is the number of threads (e.g. 4 or 8)

# Also note: https://stackoverflow.com/questions/36327805/how-to-install-gcc-5-3-with-yum-on-centos-7-2 has a good discussion of how to get newer versions of gcc

# http://www.admin-magazine.com/HPC/Articles/Environment-Modules is a good place for learning about how to set up environment modules

我们也可以按照脚本内容一步一步执行
执行到 cd gcc-5.4.0-build 这一步时
可以多执行一步 ./contrib/download_prerequisites 这一步时源码包提供的安装依赖脚本

然后就可以愉快的编译了，编译需要点时间