编译可移植的python

1. 在低版本系统机器上，编译python：
  cd  Python-2.7.15/Modules
  vim Setup.dist
  修改下述代码：
  ###########
sed -i ‘s/#SSL=\/usr\/local\/ssl/SSL=\/usr\/local\/ansible_python\/openssl_for_python/g‘ Modules/Setup.dist
sed -i ‘s/#_ssl _ssl.c/_ssl _ssl.c/g‘ Modules/Setup.dist
sed -i ‘s/#\t-DUSE_SSL/\t-DUSE_SSL/g‘ Modules/Setup.dist
sed -i ‘s/#\t-L$(SSL)/\t-L$(SSL)/g‘ Modules/Setup.dist
sed -i ‘s/#_md5 md5module.c md5.c/_md5 md5module.c md5.c/g‘ Modules/Setup.dist
sed -i ‘s/#zlib zlibmodule.c/zlib zlibmodule.c/g‘ Modules/Setup.dist
sed -i ‘s/#binascii binascii.c/binascii binascii.c/g‘ Modules/Setup.dist
sed -i ‘s/#_sha1 sha1module.c/_sha1 sha1module.c/g‘ Modules/Setup.dist
sed -i ‘s/#_sha256 sha256module.c/_sha256 sha256module.c/g‘ Modules/Setup.dist
sed -i ‘s/#_sha512 sha512module.c/_sha512 sha512module.c/g‘ Modules/Setup.dist
############
2. 指定openssl库
  编译新的openssl库
  cd  openssl-1.0.2o
  ./configure  --prefix=/usr/local/ansible_python/openssl_for_python
  make
  make install
3. 由于python编译的时候需要去/usr/local/ssl/目录下寻找openssl库(具体可看setup.py)，所以需要创建新编译openssl的软链接
  ln  -s  /usr/local/ansible_python/openssl_for_python  /usr/local/ssl
4. cd Python-2.7.15
  ./configure  –prefix=/usr/local/ansible_python/python
  make
  make install
  安装完成后，可以安装anshible等模块，方便移植
5. 将自己编译的openssl库放进系统共享库
   echo  “/usr/local/ansible_python/openssl_for_ansible/lib” >> /etc/ld.so.conf.d/ansible.conf
   ldconfig
6. 压缩编译好的python和openssl，以便于移植
   tar  -cvjf  ansible_python.tar.bz2  ansible_python
7. 将压缩包拷贝到新机器上/tmp目录后，解压 /tmp/ansible_python.tar.bz2
tar  -xvjf  /tmp/ansible_python.tar.bz2  得到 /tmp/ansible_python
8. 拷贝文件
cp  -r  /tmp/ansible_python  /usr/local/

9. 修改权限，使普通用户具有执行权限
   chown  -R  ops:ops  /usr/local/ansible_python/openssl_for_ansible/
   chmod  755  /usr/local/ansible_python/python/bin/*

10. 创建指定的ssl库的软链
   ln  -s  /usr/local/ansible_python/openssl_for_ansible/   /usr/local/ssl

11. 将指定的ssl库添加到系统共享库
   echo  “/usr/local/ansible_python/openssl_for_ansible/lib”  >>  /etc/ld.so.conf.d/ansible.conf

12. 执行命令
   ldconfig
13. 此时新python已经可以使用
   /usr/local/ansible_python/python/bin/python