commit f87e724e8c193df3b9b30ddd0b9d2ec7c6ac2ba7
author Brad King <brad.king@kitware.com> Fri Feb 08 08:13:23 2019 -0500
committer Brad King <brad.king@kitware.com> Fri Feb 08 08:17:48 2019 -0500
tree 493f22a8b528af6c05d4321e94b173f8b1e95b04
parent 6f23321d405930241fa431cfda7650f2993f0c19

Fix EXCLUDE_FROM_ALL on directory with an interface library

Since commit dc6888573d (Pass EXCLUDE_FROM_ALL from directory to
targets, 2019-01-15, v3.14.0-rc1~83^2) we automatically forward the
`EXCLUDE_FROM_ALL` to targets as they are created.  This regressed
support for interface libraries on which the property is not allowed.

Skip forwarding the `EXCLUDE_FROM_ALL` property for interface libraries.
It is not needed on them because they do not participate in the
generated build system anyway.

Fixes: #18896