Make a record of glib2.14 upgrading glib2.18 and the principle of the steps

Be careful ： As for what is GLIB This article will not elaborate on it . Everyone is upgrading GLIB Remember to take a snapshot first , In order to prevent some programs from running normally after upgrading . This article is applicable to multiple versions , It only records 2.18.

background ：  Because of some kind of production demand , The environment of virtual machine is centos6.9,gllib2.12, And program dependence glib2.18, So this article came into being .

Environmental Science ： centos6.9,GLIB2.12

The goal is ： take centos6.9,GLIB2.12 Upgrade to GLIB2.18

 

ldd --version View local GLIB edition

 

Steps are as follows ：

        One 、 download GLIB package

curl -O http://ftp.gnu.org/gnu/glibc/glibc-2.18.tar.gz

                If there are students who can't connect to the Internet , It can be in a machine that can be networked （ No system requirements ） Pre download installation package , And then again SCP To need to upgrade GLIB The virtual machine of .

                If you need to upgrade to other versions of the students can also go to http://ftp.gnu.org/gnu/glibc/ Download other versions , And then again SCP To need to upgrade GLIB The virtual machine of .

        Two 、 Unzip the installation package

tar xf glibc-2.18.tar.gz

        3、 ... and 、 Get into GLIB Installation package folder

cd glibc-2.18

        Four 、 Start upgrading                

mkdir build && cd build

../configure --prefix=/usr # Pay attention , Don't change the path 

make -j2 

make install

 

             explain ： establish build Folder and enter . perform configure file , And specify make install Of The installation directory by /usr.

        configure： Check for file compilation interdependencies , And generate makefile.

           --prefix:  Appoint The installation directory .

• First check some configuration and environment of the machine , System dependencies . If there is no dependency , The script will stop executing , Software installation failed

• Based on the results of previous checks of environment and dependencies , production Makefile file （main job）

            configure After successful execution, you can see the following files generated in the current directory ：

              When you see Makefile That means the environment is OK , You can start installing . Here are some explanations of the commands .

         make： Compile the source code and generate the executable file .

            -j2 （ -jn）： use make -j With one parameter , You can compile projects in parallel , For example, on a dual core machine , It can be used make -j4, Give Way make Most allow 4 Compile commands are executed at the same time , This can make more effective use of CPU resources .

explain ：

• make yes Unix A package under the system . perform make Command required Makefile file .make Will be based on Makefile File to install the software
• Makefile There are many labels in the document , To express a different section. General ,make Will compile the source code and generate the executable , Actually Makefile It mainly describes the interdependence of file compilation

      make install： take make The executable file of stage production is copied to Corresponding place .

        Corresponding place ：configure Generate makefile A designated place when （--prefix The address referred to ）.

explain ：

• When executed make The command takes no arguments , The procedure will follow Makefile The instructions are in the corresponding section Jump between and execute the corresponding command
• add install Parameters are executed make install when , The program will only execute install section The order of .install section The order of will make Copy the stage production executable to the appropriate place .

        5、 ... and 、 Check to see if the upgrade is successful

ldd --version

notice ldd (GNU libc) 2.18 Indicates that the upgrade has been successful .

 

 

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