Lustre can be built from source in a number of configurations. The following walk-thrus are provided:

• Walk-thru- Build Lustre MASTER on RHEL/Rocky linux 8.7 from Git
• Walk-thru- Build Lustre MASTER on RHEL 8.0/CentOS 8.0 from Git
• Walk-thru- Build Lustre MASTER on RHEL 7.3/CentOS 7.3 from Git
• Walk-thru- Build Lustre MASTER with ZFS on RHEL 7.3/CentOS 7.3 from Git

There is an additional page that describes building a Lustre client from SRPM for a new kernel:

Rebuilding the Lustre-client rpms for a new kernel

For Ubuntu users, there's a build instruction:

• Build Lustre MASTER with Ldiskfs on Ubuntu 20.04.1 from Git
• Build Lustre MASTER with Ldiskfs & ZFS on Ubuntu 14.04/16.04 from Git