1 files changed, 51 insertions, 0 deletions
diff --git a/build-aux/Makefile.tail.mk b/build-aux/Makefile.tail.mk
new file mode 100644
index 0000000..dfbad5a
--- /dev/null
+++ b/build-aux/Makefile.tail.mk
@@ -0,0 +1,51 @@
+# 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.subdirs := $(patsubst ./%,%,$(addprefix $(outdir)/,$(at.subdirs)))
+at.depdirs := $(patsubst ./%,%,$(addprefix $(outdir)/,$(at.depdirs)))
+
+# Move all of the dirlocal variables to their namespaced version
+$(foreach v,$(at.dirlocal),$(eval $v/$(outdir) := $$($v)))
+$(foreach v,$(at.dirlocal),$(eval undefine $v))
+
+# Remember that this is a directory that we've visited
+_at.outdirs := $(_at.outdirs) $(outdir)
+
+# Generic phony target declarations:
+# mark them phony
+.PHONY: $(addprefix $(outdir)/,$(at.phony))
+# have them depend on subdirs
+$(foreach t,$(at.phony),$(eval $(outdir)/$t: $(addsuffix /$t,$(at.subdirs/$(outdir)))))
+
+# Include Makefiles from other directories
+$(foreach _at.NO_ONCE,y,\
+	$(foreach makefile,$(call at.path,$(addsuffix /Makefile,$(at.subdirs/$(outdir)) $(at.depdirs/$(outdir)))),\
+		$(eval include $(filter-out $(_at.included_makefiles),$(makefile)))))
+
+# This bit only gets evaluated once, after all of the other Makefiles are read
+ifeq ($(_at.NO_ONCE),)
+
+outdir = /bogus
+srcdir = /bogus
+
+$(foreach v,$(at.dirlocal),$(eval $v=))
+
+include $(call _at.reverse,$(sort $(wildcard $(topsrcdir)/build-aux/Makefile.once.tail/*.mk)))
+
+endif # _at.NO_ONCE