build: use portable Makefile variables
authorA. Gordon <assafgordon@gmail.com>
Mon, 15 Sep 2014 19:51:50 +0000 (15:51 -0400)
committerRichard W.M. Jones <rjones@redhat.com>
Tue, 16 Sep 2014 17:57:54 +0000 (18:57 +0100)
commit243928da395080d7895111d5e5c0f1ff5f9e95fb
tree3af6b28258e6a2ca4687667fe90a65f0b9aa98d6
parentaec669f7b9e4a172c57978597916f8bd97bf26de
build: use portable Makefile variables

* Makefile.am: use '$?' instead of '$<'
  $< in a non-inference rule is a GNU-make extension, which fails with
  BSD make.
Makefile.am