[LU-13787] Build failure libcfs needed by snmp

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Labels: llnl
• Environment: Centos 7.8 TOSS 3.6-3 (RHEL 7.8)
• Severity: 3
• Assignee: James A Simmons
• Reporter: Gian-Carlo Defazio

Description

Lustre fails to build while in the snmp directory with the error

make[3]: *** No rule to make target `../libcfs/libcfs/libcfs.la', needed by `liblustresnmp.la'.  Stop.

This can be fixed by just changing the build order in autoMakefile.am by putting libcfs before snmp for both SUBDIRS and DIST_SUBDIRS. However, I don't get a build failure for Centos 7.7, and I don't see everyone's builds failing here, so I suspect I'm not really understanding the problem. Also libcfs came before snmp until change 37971.

So the questions are:

Is there some other reason why the build is failing that explains why it doesn't fail for other environments?

Is there a reason that the build order was changed, putting snmp before libcfs?