(libretools) Refactor the build system. Avoid recursive make.

This looks like a lot, but more things should "just work".

We have `make dist` now!

1 files changed, 140 insertions, 0 deletions

diff --git a/automake.tail.mk b/automake.tail.mk
new file mode 100644
index 0000000..5d6ad00
--- /dev/null
+++ b/automake.tail.mk
@@ -0,0 +1,140 @@
+# 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/>.
+
+include $(topsrcdir)/common.each.tail.mk
+
+
+# Aggregate variables
+
+# Add some more defaults to the *_files variables
+$(_am)clean_files += $($(_am)gen_files) $($(_am)out_files)
+$(_am)cfg_files += Makefile
+
+# Now namespace the *_files variables
+define _am_save_variables
+_am_src_files/$(outdir)   = $(addprefix $(srcdir)/,$($(_am)src_files))
+_am_gen_files/$(outdir)   = $(addprefix $(srcdir)/,$($(_am)gen_files))
+_am_cfg_files/$(outdir)   = $(addprefix $(outdir)/,$($(_am)cfg_files))
+_am_out_files/$(outdir)   = $(addprefix $(outdir)/,$($(_am)out_files))
+_am_sys_files/$(outdir)   = $(addprefix $(DESTDIR),$($(_am)sys_files))
+_am_clean_files/$(outdir) = $(addprefix $(outdir)/,$($(_am)clean_files))
+_am_slow_files/$(outdir)  = $(addprefix $(outdir)/,$($(_am)slow_files))
+_am_subdirs/$(outdir)     =                        $($(_am)subdirs)
+endef
+$(eval $(_am_save_variables))
+
+# And add them to the $(parent)_*_files variables (if applicable)
+define _am_add_subdir
+_am_src_files/%(outdir)   += $(_am_src_files/%(subdir))
+_am_gen_files/%(outdir)   += $(_am_gen_files/%(subdir))
+_am_cfg_files/%(outdir)   += $(_am_cfg_files/%(subdir))
+_am_out_files/%(outdir)   += $(_am_out_files/%(subdir))
+_am_sys_files/%(outdir)   += $(_am_sys_files/%(subdir))
+_am_clean_files/%(outdir) += $(_am_clean_files/%(subdir))
+_am_slow_files/%(outdir)  += $(_am_slow_files/%(subdir))
+endef
+$(foreach subdir,$(call _am_path,$(addprefix $(outdir)/,$($(_am)subdirs))),$(eval $(subst %(outdir),$(outdir),$(subst %(subdir),$(subdir),$(value _am_add_subdir)))))
+
+_am_outdirs := $(_am_outdirs) $(outdir)
+
+
+# Do some per-directory magic
+
+_am_phony = build install uninstall mostlyclean clean distclean maintainer-clean check
+
+.PHONY: $(addprefix $(outdir)/,$(_am_phony))
+
+$(addprefix $(outdir)/,uninstall mostlyclean clean distclean maintainer-clean)::
+	$(RM) -- $(sort $(_am_$(@F)/$(@D)))
+	$(RMDIRS) $(sort $(dir $(_am_$(@F)/$(@D)))) 2>/dev/null || $(TRUE)
+
+# 'build' and 'install' must be defined later, because the
+# am_*_files/* variables might not be complete yet.
+
+
+# Include Makefiles from other directories
+
+define _am_nl
+
+
+endef
+
+$(foreach _am_NO_ONCE,y,\
+	$(foreach makefile,$(foreach dir,$($(_am)subdirs) $($(_am)depdirs),$(call _am_path,$(outdir)/$(dir)/Makefile)),\
+		$(eval include $(filter-out $(_am_included_makefiles),$(makefile)))))
+
+
+# This only gets evaluated once, after all of the other Makefiles are read
+ifeq ($(_am_NO_ONCE),)
+# Empty directory-level variables
+outdir = /bogus
+srcdir = /bogus
+
+$(_am)subdirs =
+$(_am)depdirs =
+
+$(_am)src_files =
+$(_am)gen_files =
+$(_am)cfg_files =
+$(_am)out_files =
+$(_am)sys_files =
+$(_am)clean_files =
+$(_am)slow_files =
+
+_am_clean_files/$(topoutdir) += $(topoutdir)/$(PACKAGE)-$(VERSION).tar.gz
+$(addprefix $(topoutdir)/,mostlyclean clean distclean maintainer-clean) ::
+	$(RM) -r -- $(topoutdir)/$(PACKAGE)-$(VERSION)
+
+define _am_directory_rules
+# Constructive phony targets
+$(outdir)/build  : $(_am_out_files/%(outdir))
+$(outdir)/install: $(_am_sys_files/%(outdir))
+# Destructive phony targets
+_am_uninstall/%(outdir)        = $(_am_sys_files/%(outdir))
+_am_mostlyclean/%(outdir)      = $(filter-out $(_am_slow_files/%(outdir)) $(_am_cfg_files/%(outdir)) $(_am_gen_files/%(outdir)),$(_am_clean_files/%(outdir)))
+_am_clean/%(outdir)            = $(filter-out                             $(_am_cfg_files/%(outdir)) $(_am_gen_files/%(outdir)),$(_am_clean_files/%(outdir)))
+_am_distclean/%(outdir)        = $(filter-out                                                        $(_am_gen_files/%(outdir)),$(_am_clean_files/%(outdir)))
+_am_maintainer-clean/%(outdir) =                                                                                                $(_am_clean_files/%(outdir))
+endef
+$(foreach outdir,$(_am_outdirs),$(eval $(subst %(outdir),$(outdir),$(value _am_directory_rules))))
+
+# Add the `dist` target
+.PHONY: dist
+dist: $(topoutdir)/$(PACKAGE)-$(VERSION).tar.gz
+$(topoutdir)/$(PACKAGE)-$(VERSION).tar.gz: $(topoutdir)/$(PACKAGE)-$(VERSION)
+	$(TAR) czf $@ -C $(<D) $(<F)
+_am_copyfile = $(MKDIRS) $(dir $2) && $(CP) -T $1 $2
+_am_addfile = $(call _am_copyfile,$3,$2/$(call _am_relto,$1,$3))
+$(topoutdir)/$(PACKAGE)-$(VERSION): $(_am_src_files/$(topoutdir)) $(_am_gen_files/$(topoutdir))
+	$(RM) -r $@
+	@PS4='' && set -x && \
+	$(MKDIR) $(@D)/tmp.$(@F).$$$$ && \
+	$(foreach f,$^,$(call _am_addfile,$(topsrcdir),$(@D)/tmp.$(@F).$$$$,$f) &&) \
+	$(MV) $(@D)/tmp.$(@F).$$$$ $@ || $(RM) -r $(@D)/tmp.$(@F).$$$$
+
+include $(topsrcdir)/common.once.tail.mk
+
+# For some reason I can't explain, RM doesn't really get set with ?=
+CP     ?= cp
+MKDIR  ?= mkdir
+MKDIRS ?= mkdir -p
+MV     ?= mv
+RM      = rm -f
+RMDIRS ?= rmdir -p
+TAR    ?= tar
+TRUE   ?= true
+
+.PHONY: noop
+endif