my centOS version is centos-release-6-6.el6.centos.12.2.x86_64
I have executed the following commands to extract and install glibc-2.15
tar zxvf glibc-2.14.tar.gz
cd glibc-2.14
mkdir build
cd build
../configure --prefix=/opt/glibc-2.14
make -j4
make install
But when I check glib version with command yum list glibc, it shows:
Installed Packages glibc.i686 2.12-1.192.el6 @base glibc.x86_64 2.12-1.192.el6 @base
The version you get from yum list glibc is the glibc version found in your repos, not the one you have compiled manually.
If you want to make reference to the 2.15 version, you should check and use the glibc version from the folder in which you configured it when compiling.
'Yum list glibc' will always show the glibc version which are available in the centos 6 repository.
The steps you've followed implies that you've build your own version of glibc but it doesn't mean it will change the version on repo as well.
If you're looking for the usage of upgraded libraries, then you must either export it or feed the upgraded libraries to the symbolic link under /lib/ or /lib64/ which can be done in the following ways.
1.LD_LIBRARY_PATH=/opt/glibc-2.14
export LD_LIBRARY_PATH
It will stay exposed until your current session gets logged out.
ln -sf /lib/glibc.so.6 /opt/glibc-2.14/glibc-2.14.soIf any of your program stops working, then immediately execute below command.
ln -sf /lib/glibc.so.6 glibc-2.x.so
here x denotes your authentic version of glibc.
