1 files changed, 40 insertions, 0 deletions
diff --git a/build-aux/Makefile.tail.mk b/build-aux/Makefile.tail.mk
new file mode 100644
index 0000000000..2e4adc611b
--- /dev/null
+++ b/build-aux/Makefile.tail.mk
@@ -0,0 +1,40 @@
+# Copyright (C) 2015-2016  Luke Shumaker
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This bit gets evaluated for each Makefile processed
+
+include $(call _at.reverse,$(sort $(wildcard $(topsrcdir)/build-aux/Makefile.each.tail/*.mk)))
+
+_at.tmp_targets := $(at.targets)
+_at.tmp_subdirs := $(call at.addprefix,$(outdir),$(at.subdirs))
+
+# Clean the environment
+$(eval \
+  $(foreach _at.tmp_variable,$(filter-out $(call _at.quote-pattern,_at.tmp_variable $(_at.VARIABLES)),$(.VARIABLES)),\
+    $(call _at.target_variable,$(_at.tmp_targets),$(_at.tmp_variable))$(at.nl)\
+    undefine $(_at.tmp_variable)$(at.nl)))
+
+# Recurse
+$(foreach _at.NO_ONCE,y,\
+          $(foreach _at.tmp,$(call at.path,$(addsuffix /$(at.Makefile),$(_at.tmp_subdirs))),\
+                    $(if $(filter-out $(_at.MAKEFILE_LIST),$(abspath $(_at.tmp))),\
+                         $(eval include $(_at.tmp)))))
+
+# This bit only gets evaluated once, after all of the other Makefiles are read
+ifeq ($(origin _at.NO_ONCE),undefined)
+
+include $(call _at.reverse,$(sort $(wildcard $(topsrcdir)/build-aux/Makefile.once.tail/*.mk)))
+
+endif # _at.NO_ONCE