CentOS

You need to check centos_ver not rhel. If you check rhel then it looks like you're building for RHEL 8. If you check centos_ver then it is CentOS and since there is ONLY CentOS Stream 8 now, it's got to be that. Look in /usr/lib/rpm/macros.d/macros.dist and you will see the things there that you can...

Looking in /usr/lib/rpm/macros.d/macros.dist from the current centos-release package, I do not see anything there that is stream specific but there is stuff there about centos and since there is no CentOS except Stream now, you can probably use that. Also, there is no CentOS Stream 7 so checking for...

Post the output from lspci -nn | grep -i net so that we can see exactly which card you have.

I find google its saying that the r8125 cards are already supported in RHEL 8 by the r8169 driver so it's very possible that you do not need the thing you're trying to build at present.

It was not deleted, it was merged into one of the many other threads you have posted on the same subject.

Stop raising duplicate threads.

Please do not make duplicate posts. I've merged all these into one. As previously said, it's really not a good idea to install CentOS 7 at this point. It dies in less than 2 months time so you will need to reinstall in 6 weeks time. Pick a newer distro and use that. CentOS 7 is dead or very nearly d...

Why? Why would you install CentOS 7 now when it has less than 6 weeks left to live?

Pick a newer distro, one that doesn't die in less than 2 months time.

And then repeat it again until you reach the bottopm of the directory tree containing the space.

Why would you attempt to install CentOS 7 when it only has 6 weeks left to live?

Pick a newer distro and try that. CentOS 7 dates from 2014 and is only a few weeks away from its end of life date. It's a bad choice for a new install.