1 files changed, 89 insertions, 0 deletions
diff --git a/share/mk/build/catman.mk b/share/mk/build/catman.mk
new file mode 100644
index 0000000..7b8766e
--- /dev/null
+++ b/share/mk/build/catman.mk
@@ -0,0 +1,89 @@
+########################################################################
+# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: GPL-3.0-or-later
+########################################################################
+
+
+ifndef MAKEFILE_BUILD_CATMAN_INCLUDED
+MAKEFILE_BUILD_CATMAN_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/groff.mk
+include $(MAKEFILEDIR)/cmd.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+groff_man_ignore_grep := $(DATAROOTDIR)/lint/groff/man.ignore.grep
+
+MANWIDTH             ?= 80
+TROFF_CHECKSTYLE_LVL := 3
+NROFF_LINE_LENGTH    := $(shell $(EXPR) $(MANWIDTH) - 2)
+NROFF_OUT_DEVICE     := $(shell $(LOCALE) charmap \
+                                | $(GREP) -i 'utf-*8' >/dev/null \
+                                    && $(ECHO) utf8 \
+                                    || $(ECHO) ascii)
+
+DEFAULT_NROFFFLAGS := \
+	-T$(NROFF_OUT_DEVICE) \
+	-rLL=$(NROFF_LINE_LENGTH)n \
+	-rCHECKSTYLE=$(TROFF_CHECKSTYLE_LVL) \
+	-ww
+EXTRA_NROFFFLAGS   :=
+NROFFFLAGS         := $(DEFAULT_NROFFFLAGS) $(EXTRA_NROFFFLAGS)
+
+DEFAULT_GROTTYFLAGS := -c
+EXTRA_GROTTYFLAGS   :=
+GROTTYFLAGS         := $(DEFAULT_GROTTYFLAGS) $(EXTRA_GROTTYFLAGS)
+GROTTY              := grotty
+
+
+_CATMAN_troff   := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat.troff,$(NONSO_MAN) $(NONSO_MDOC))
+_CATMAN_MAN_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat.set,$(NONSO_MAN))
+_CATMAN_MDOC_set:= $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat.set,$(NONSO_MDOC))
+_CATMAN         := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat,$(NONSO_MAN) $(NONSO_MDOC))
+
+
+$(_CATMAN_troff): %.cat.troff: %.eqn | $$(@D)/
+	$(info	EQN	$@)
+	! ($(EQN) -T$(NROFF_OUT_DEVICE) $(EQNFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+$(_CATMAN_MAN_set): %.cat.set: %.cat.troff $(groff_man_ignore_grep) | $$(@D)/
+	$(info	TROFF	$@)
+	! ($(TROFF) $(TROFFFLAGS_MAN) $(NROFFFLAGS) <$< 2>&1 >$@ \
+	   | $(GREP) -v -f '$(groff_man_ignore_grep)' \
+	   ||:; \
+	) \
+	| $(GREP) ^ >&2
+
+$(_CATMAN_MDOC_set): %.cat.set: %.cat.troff | $$(@D)/
+	$(info	TROFF	$@)
+	! ($(TROFF) $(TROFFFLAGS_MDOC) $(NROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+$(_CATMAN): %.cat: %.cat.set | $$(@D)/
+	$(info	GROTTY	$@)
+	$(GROTTY) $(GROTTYFLAGS) <$< >$@
+
+
+.PHONY: build-catman-eqn
+build-catman-eqn: $(_CATMAN_troff);
+
+.PHONY: build-catman-troff-man
+build-catman-troff-man: $(_CATMAN_MAN_set);
+
+.PHONY: build-catman-troff-mdoc
+build-catman-troff-mdoc: $(_CATMAN_MDOC_set);
+
+.PHONY: build-catman-troff
+build-catman-troff: build-catman-troff-man build-catman-troff-mdoc;
+
+.PHONY: build-catman-grotty
+build-catman-grotty: $(_CATMAN);
+
+.PHONY: build-catman
+build-catman: build-catman-grotty;
+
+
+endif  # include guard