vtysh.xref only contains a rather-useless duplicate of every single CLI
command incorporated into vtysh... and including it prevents frr.xref
from becoming the source for vtysh_cmd.c.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
When automake decides to customize CFLAGS, use those for building LLVM
bitcode files too.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
These are easy to get subtly wrong, and doing so can cause
nondeterministic failures when racing in parallel builds.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>