CentOS6.5 64-bit system installs 32-bit Python

CentOS6.5 comes with gcc 4.4.7 and Python 2.6.6

Reminder: I am using root user, if not root user, just add sudo in front of the instruction

First, make sure GCC compiles the code to 32-bit, and installs the 32-bit compilation environment using Yum

#yum Install libstdc++-devel.i686 glibc.i686 libgcc.i686 libstdc++.i686 glibc-devel.i686

# yum-y Install Glibc-devel

# yum-y Install glibc-devel.i686

# yum Install libstdc++-devel.i686

After the installation of the environment, a simple test can compile 32-bit programs such as #gcc-m32 TEST.c, the compilation is complete without problems

After the 32-bit compilation environment is built, compile and install using python2.7.7 source code

You need to install the following environment before compiling the source code

#yum Install libgcc.i686 glibc-devel.i686 glibc.i686 zlib-devel.i686
#yum Install readline-devel.i686 gdbm-devel.i686 openssl-devel.i686 ncurses-devel.i686
#yum Install tcl-devel.i686 db4-devel.i686 bzip2-devel.i686

The preparation has been completed by the source code to install 32-bit Python, the source I put in the/USR/LOCAL/SRC

#cd/USR/LOCAL/SRC

#wget http://www.python.org/ftp/python/2.7.7/Python-2.7.7.tgz
#tar XZVF python-2.7.7.tgz
#cd python-2.7.7/
#mkdir-P/usr/local/python-2.7
#CFLAGS =-m32 ldflags=-m32./configure--prefix=/usr/local/python2.7--enable-shared Ld_run_path=/usr/local/lib
#make
#make Install

After the compilation installation is complete, you can use

#file/usr/local/python2.7/bin/python2.7

Displayed as

/usr/local/python2.7/bin/python2.7:elf 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (Uses Sha Red Libs), for Gnu/linux 2.6.18, not stripped

Description python2.7 32-bit has been successfully installed

Then set up the software connection and configuration environment, in no particular order

Setting up a soft connection

#mv/usr/bin/python/usr/bin/python_old
#ln-S/usr/local/python27/bin/python/usr/bin/python

Yum relies on python2.6.6, and Yum cannot use it with the above settings

#vi/usr/bin/yum

Change the first line/usr/bin/python to/usr/bin/python_old and save the exit so Yum can use it properly.

Configuring the Environment

# echo $PATH
/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin
# path= "$PATH":/usr/local/python2.7/bin
# echo $PATH
/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin:/usr/local/python2.7/bin

Run #python If error occurs while loading shared Libraries:libpython2.7.so.1.0:cannot open Shared object file:no such file or D Irectory Error

#vi/etc/ld.so.conf

Add python2.7 Lib Library, my is/usr/local/python2.7/lib, that is, the path of Lib in the installation directory, save exit

#ldconfig-V

By this python2.7 32-bit installation is complete.

CentOS6.5 64-bit system installs 32-bit Python