I have CentOS 7 installed. I want to install the APR package for Apache, and I'm told I cannot install it because it requires at least glibc.2.14 while I have glibc.2.12 installed. I have downloaded the glibc.2.17.rpm package, I then install it but it throws an error that it requires glibc.common.2.17 to be installed.

I'm now stuck, because when I try to install glibc.common.2.17, it throws an error that it requires glibc.2.17 (the package that I first wanted to install). There is a circular dependency it seems. How can I update glibc 2.12 in CentOS 7? I'm totally confused...

  • Why aren't you using yum to update? That would automate this process for you. But if you've ran into a circular dependency you can usually add --nodeps --force to the end of the rpm command. – Bratchley Dec 30 '14 at 14:58
  • when I use yum update, it updates to the same version, 2.12. – Mostafa Talebi Dec 30 '14 at 15:00
  • That's interesting, you might check to see if there's an alternative package name. Sometimes RHEL/CentOS will have a lower version number for the regular package name and a more specific name for a later version. For example, on RHEL6 samba is Samba 3.5 whereas samba4 is Samba 4.0. I don't have a RHEL/CentOS system to test with but you might do a yum search glibc to see if that's the case here. – Bratchley Dec 30 '14 at 15:02

You need to download the following 4 packages from a mirror:

  1. glibc-2.17-55.el7.i686.rpm
  2. glibc-2.17-55.el7.x86_64.rpm
  3. glibc-common-2.17-55.el7.x86_64.rpm
  4. glibc-headers-2.17-55.el7.x86_64.rpm

After doing so, issue a rpm -ivh glibc-*. If that fails, download:

  1. glibc-devel-2.17-55.el7.i686.rpm
  2. glibc-devel-2.17-55.el7.x86_64.rpm

and reissue the command again. After getting glibc updated, issue a yum update to resolve any new dependencies.


If you have glibc 2.12 installed, you do NOT have CentOS7; you're on CentOS6. While there's been a lot of grief about the locking of major/minor versions after distro release - it's for stability, testing and certification; you'll learn the value later - the version you're looking at should not exist under an up-to-date centos7.

Update your CentOS7, do a yum install of apr (apr-devel too?) and you're done.

If you DO have CentOS6, apr-1.3.9-5.el6_2.x86_64 requires glibc-2.12 . Yum install will get you what you need here, as well.

In general

  1. Don't mix RPMs from alient repositories: you're looking for pain.
  2. Don't mix RPMs from two different distro releases -- they're designed to work together, and tested so.
  3. if it's suddenly hard, or there are strange messages, there's a really good chance you're doing something you should not.
  4. Dependency Hell [tm] is self-inflicted. No exceptions.

I worked at a distro; not in Support but adjacent to it. #4 is a well-tested theory.

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