1 files changed, 96 insertions, 0 deletions
diff --git a/share/mk/dist.mk b/share/mk/dist.mk
new file mode 100644
index 0000000..b18197d
--- /dev/null
+++ b/share/mk/dist.mk
@@ -0,0 +1,96 @@
+########################################################################
+# Copyright 2021-2022, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: GPL-3.0-or-later
+########################################################################
+
+
+ifndef MAKEFILE_DIST_INCLUDED
+MAKEFILE_DIST_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/cmd.mk
+include $(MAKEFILEDIR)/compress.mk
+include $(MAKEFILEDIR)/install/_.mk
+include $(MAKEFILEDIR)/version.mk
+include $(MAKEFILEDIR)/verbose.mk
+
+
+_DISTDIR := $(builddir)/dist
+
+
+DEFAULT_TARFLAGS := \
+	--sort=name \
+	--owner=root:0 \
+	--group=root:0 \
+	--mtime='$(DISTDATE)'
+EXTRA_TARFLAGS   :=
+TARFLAGS         := $(DEFAULT_TARFLAGS) $(EXTRA_TARFLAGS)
+
+
+DISTFILES   := $(shell $(GIT) ls-files $(HIDE_ERR) \
+			| $(SED) 's,^,$(srcdir)/,' \
+			| $(SED) 's,:,\\:,g')
+_DISTFILES  := $(patsubst $(srcdir)/%,$(_DISTDIR)/%,$(DISTFILES))
+_DISTPAGES  := $(filter     $(_DISTDIR)/man%,$(_DISTFILES))
+_DISTOTHERS := $(filter-out $(_DISTDIR)/man%,$(_DISTFILES))
+
+DISTFILE    := $(builddir)/$(DISTNAME).tar
+compression := bz2 gz lz xz
+dist        := $(foreach x,$(compression),dist-$(x))
+
+
+$(builddir)/dist/%/:
+	+$(info INSTALL	$@)
+	+$(INSTALL_DIR) $@
+
+
+$(_DISTPAGES): $(_DISTDIR)/man%: $(srcdir)/man% | $$(@D)/
+	$(info INSTALL	$@)
+	$(INSTALL_DATA) -T $< $@
+	$(SED) -i '/^.TH/s/(unreleased)/$(DISTVERSION)/' $@
+	$(SED) -i "/^.TH/s/(date)/$$(git log --format=%cs -1 -- $< $(HIDE_ERR))/" $@
+
+$(_DISTOTHERS): $(_DISTDIR)/%: $(srcdir)/% | $$(@D)/
+	$(info CP	$@)
+	$(CP) -T $< $@
+
+
+$(DISTFILE): $(_DISTFILES) | $$(@D)/
+	$(info TAR	$@)
+	$(TAR) $(TARFLAGS) -cf $@ -T /dev/null
+	$(GIT) ls-files \
+	| $(SED) 's,^,$(_DISTDIR)/,' \
+	| $(XARGS) $(TAR) $(TARFLAGS) -rf $@ -C $(srcdir) \
+		--transform 's,^$(_DISTDIR),$(DISTNAME),'
+
+$(DISTFILE).bz2: %.bz2: % | $$(@D)/
+	$(info BZIP2	$@)
+	$(BZIP2) $(BZIP2FLAGS) -kf $<
+	touch $@
+
+$(DISTFILE).gz: %.gz: % | $$(@D)/
+	$(info GZIP	$@)
+	$(GZIP) $(GZIPFLAGS) -knf $<
+
+$(DISTFILE).lz: %.lz: % | $$(@D)/
+	$(info LZIP	$@)
+	$(LZIP) $(LZIPFLAGS) -kf $<
+	touch $@
+
+$(DISTFILE).xz: %.xz: % | $$(@D)/
+	$(info XZ	$@)
+	$(XZ) $(XZFLAGS) -kf $<
+
+
+.PHONY: dist-tar
+dist-tar: $(DISTFILE);
+
+.PHONY: $(dist)
+$(dist): dist-%: $(DISTFILE).%;
+
+.PHONY: dist
+dist: $(dist);
+
+
+endif  # include guard