linux python3 编译安装

升级openssl:

1. wget https://www.openssl.org/source/openssl-1.1.1a.tar.gz
2. tar xvzf openssl-1.1.1a.tar.gz --directory /usr/local/src
3. ./config --prefix=/usr/local/openssl
4. make && make install
5. mv /usr/bin/openssl{,.bak}
6. mv /usr/include/openssl{,.bak}
7. ln -sv /usr/local/openssl/include/openssl /usr/include/openssl　　导出头文件
8. ln -sv /usr/local/openssl/bin /usr/bin/openssl
9. echo '/usr/local/openssl/lib' >> /etc/ld.so.conf.d/openssh.conf
10. ldconfig -v
11. openssl version
    
    
    

安装Python3:

1. 安装依赖
   

   yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel libffi-devel xz-devel xz lzma gdbm gdbm-devel libpcap-devel
   yum groupinstall 'development tools'

    

2. 下载源码包

   wget https://www.python.org/ftp/python/3.9.1/Python-3.9.1.tar.xz

    

3. 解压
   

   tar xvf Python-3.9.1.tgz --directory /usr/local/src
   cd /usr/local/src/Python-3.9.1

    

4. 安装编译
   

   ./configure --prefix=/usr/local/python3 --enable-optimizations --enable-shared CFLAGS=-fPIC　　# --enable-optimizations 需要较高版本gcc支持
   make && make install 
   
   # 个别版本编译报错
   sed -i -e '/^#SSL/,+3 s/^#//' -e '/^SSL/ s/ssl/openssl/' Modules/Setup

   
   
5. 配置动态链接库
   

   echo '/usr/local/python3/lib' >> /etc/ld.so.conf.d/python3.conf
   ldconfig -v

6. 修改yum
   

   /usr/bin/yum
   #!/usr/bin/python => #!/usr/bin/python2
   
   /usr/libexec/urlgrabber-ext-down
   #!/usr/bin/python => #!/usr/bin/python2

7. 增加连接
   

   ln -svnf /usr/local/python3/bin/python3 /usr/bin/python
   ln -svnf /usr/local/python3/bin/pip3 /usr/bin/pip