Fix problem with out-of-date dependencies
commit3c4ec7e1d2fd0197c5fcadac7dd35414b7be72cb
authorPaul Eggert <eggert@cs.ucla.edu>
Mon, 20 Mar 2017 15:57:20 +0000 (20 08:57 -0700)
committerPaul Eggert <eggert@cs.ucla.edu>
Mon, 20 Mar 2017 15:57:50 +0000 (20 08:57 -0700)
treefefb1c9462ed3d61a4faeb1707c0188e17cbce2b
parent34d69ed7355572b905bf16ab84024b7056cffe85
Fix problem with out-of-date dependencies

Problem reported by Robert Marshall in:
http://lists.gnu.org/archive/html/emacs-devel/2017-03/msg00501.html
Although this problem has been with us for a while, the recent
change from Automake to GNU Make exposed it again.
* configure.ac (AUTO_DEPEND): When autodepending, clean out any
leftover dependency and object files, since the previous sources'
dependencies may disagree with the current ones.  Reconfiguring
typically needs to force a rebuild anyway.
configure.ac