centos7下源码编译安装python3.8

0.简介

centos7下源码编译安装python3.8（3.7+版本均可），3.6可通过yum安装（yum install python36）略。。。
Centos安装Python3.8
centos7下源码编译安装python3.8（3.7+版本均可），3.6可通过yum安装（yum install python36）略。。。

1.安装编译相关工具

准备工作，每台机器运行过一次即可

yum -y groupinstall “Development tools”
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel
yum -y install libffi-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

2.下载python源码包

访问https://www.python.org/ftp/python/，就能看到各个版本的python包了

image-20211108212857021

本文以3.8.8版本为例

下载

wget https://www.python.org/ftp/python/3.8.8/Python-3.8.8.tgz

解压

tar -zxvf Python-3.8.8.tgz
3.编译安装
mkdir /usr/local/python3.8 #创建编译安装目录
cd Python-3.8.8

！！！！安装之前一定编辑setup先去掉注释，否则会报_ssl错误，详情参考下方5部分
vim Python-3.8.2/Modules/Setup ；取消以下注释

# Socket module helper for socket(2)
_socket socketmodule.c timemodule.c

# Socket module helper for SSL support; you must comment out the other
# socket line above, and possibly edit the SSL variable:

注意 3.8.8缺了timemodule.c，需要加上，否则make还是会报错；
注意每次编译前先删除安装目录/usr/local/python3.8，再创建个目录/usr/local/python3.8

安装 yum install openssl，再./configure --enable-optimizations --prefix=/usr/local/python3.8

到最后，我也没解决这些问题，我选用了最粗暴的方法：rm -rf。OpenSSL不能用了？删！Python3.8没编译成功？删！把所有删个干净后再重新安装，sudo apt-get install openssl，vim Setup，sudo ./configure --enable-optimizations --prefix=/usr/local/python3.8，sudo make，sudo make install，sudo ln -s /usr/local/python-3.8/bin/python3.8 /usr/bin/python3.8一气呵成！没有终止，没有报错！
参考：https://blog.youkuaiyun.com/weixin_37988176/article/details/109420535

./configure --prefix=/usr/local/pytho