I am unable to download the pam-devel, zlib-devel and openssl-devel packages on a Red Hat Enterprise Linux Server release 7.4 (Maipo).
yum install pam-devel
I am getting the following error:
error: No package pam-devel available. error: Nothing to do
yum repolist all
I am not able to enable the repositories running
yum-config-manager --enable epel-source/x86_64.
Why are the packages not available and what I can do to get them?