The official Blender daily builds now support RHEL/CentOS!
There is no need for a custom build anymore.
I have set up a dedicated build environment targeting enterprise Linux distributions such as RHEL/CentOS, which use older glibc versions (as old as 2.17).
I’ll be posting regular updates to the build here: https://blender.community/c/graphicall/4cbbbc/ (no longer available)
Enjoy blending in a studio environment!