Merging upstream version 6.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

108 files changed, 2756 insertions, 1217 deletions

diff --git a/share/lint/mandoc/mdoc.ignore.grep b/share/lint/mandoc/mdoc.ignore.grep
deleted file mode 100644
index 3fe2831..0000000
--- a/share/lint/mandoc/mdoc.ignore.grep
+++ /dev/null
@@ -1,5 +0,0 @@
-STYLE: legacy man(7) date format: Dd 
-STYLE: lower case character in document title: Dt 
-STYLE: operating system explicitly specified: Os 
-STYLE: referenced manual not found: Xr 
-WARNING: cross reference to self: Xr 
diff --git a/share/mk/build/_.mk b/share/mk/build/_.mk
index bdce760..8ced940 100644
--- a/share/mk/build/_.mk
+++ b/share/mk/build/_.mk
@@ -1,52 +1,25 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_BUILD_INCLUDED
 MAKEFILE_BUILD_INCLUDED := 1
 
 
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
 
 
-builddir := .tmp
-
-SYSCONFDIR := $(srcdir)/etc
-
 _MANDIR := $(builddir)/man
 
 
-MKDIR := mkdir -p
-RM    := rm
-
-
-NONSO_MAN := $(shell $(FIND) $(MANDIR)/* -type f \
-		| $(GREP) '$(MANEXT)' \
-		| $(XARGS) $(GREP) -l '^\.TH ' \
-		| $(SORT) \
-		| $(SED) 's,:,\\:,g')
-NONSO_MDOC := $(shell $(FIND) $(MANDIR)/* -type f \
-		| $(GREP) '$(MANEXT)' \
-		| $(XARGS) $(GREP) -l '^\.Dt ' \
-		| $(SORT) \
-		| $(SED) 's,:,\\:,g')
-
-
-$(builddir)/%/:
-	+$(info MKDIR	$@)
-	+$(MKDIR) $@
-
-
 .PHONY: build
-build: build-catman build-html build-pdf build-ps build-src;
-
-.PHONY: clean
-clean:
-	$(info RM -rf	$(builddir))
-	$(RM) -rf $(builddir)
+build: \
+	build-book \
+	build-catman \
+	build-html \
+	build-pdf \
+	build-ps \
+	build-ex;
 
 
 endif  # include guard
diff --git a/share/mk/build/book.mk b/share/mk/build/book.mk
new file mode 100644
index 0000000..a941ced
--- /dev/null
+++ b/share/mk/build/book.mk
@@ -0,0 +1,42 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_BOOK_INCLUDED
+MAKEFILE_BUILD_BOOK_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+include $(MAKEFILEDIR)/configure/build-depends/moreutils.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+LMBDIR   := $(srcdir)/scripts/LinuxManBook
+BUILDLMB := $(LMBDIR)/build.sh
+
+
+_LMB     := $(_MANDIR)/man-pages.pdf
+
+
+$(_LMB): $(MANPAGES) $(wildcard $(LMBDIR)/* $(LMBDIR)/*/*) | $$(@D)/
+	$(info	$(INFO_)Build		$@)
+	CAT='$(CAT)' \
+	PRECONV='$(PRECONV)' \
+	PIC='$(PIC)' \
+	TBL='$(TBL)' \
+	EQN='$(EQN)' \
+	TROFF='$(TROFF)' \
+	GROPDF='$(GROPDF)' \
+	$(BUILDLMB) $(MANDIR) \
+	| $(SPONGE) $@
+
+
+.PHONY: build-book
+build-book: $(_LMB);
+
+
+endif  # include guard
diff --git a/share/mk/build/catman.mk b/share/mk/build/catman.mk
deleted file mode 100644
index 7b8766e..0000000
--- a/share/mk/build/catman.mk
+++ /dev/null
@@ -1,89 +0,0 @@
-########################################################################
-# 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 | $$(@D)/
-	$(info	GROTTY	$@)
-	$(GROTTY) $(GROTTYFLAGS) <$< >$@
-
-
-.PHONY: build-catman-eqn
-build-catman-eqn: $(_CATMAN_troff);
-
-.PHONY: build-catman-troff-man
-build-catman-troff-man: $(_CATMAN_MAN_set);
-
-.PHONY: build-catman-troff-mdoc
-build-catman-troff-mdoc: $(_CATMAN_MDOC_set);
-
-.PHONY: build-catman-troff
-build-catman-troff: build-catman-troff-man build-catman-troff-mdoc;
-
-.PHONY: build-catman-grotty
-build-catman-grotty: $(_CATMAN);
-
-.PHONY: build-catman
-build-catman: build-catman-grotty;
-
-
-endif  # include guard
diff --git a/share/mk/build/catman/_.mk b/share/mk/build/catman/_.mk
new file mode 100644
index 0000000..78aa862
--- /dev/null
+++ b/share/mk/build/catman/_.mk
@@ -0,0 +1,13 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_CATMAN_INCLUDED
+MAKEFILE_BUILD_CATMAN_INCLUDED := 1
+
+
+.PHONY: build-catman
+build-catman: build-catman-grotty;
+
+
+endif  # include guard
diff --git a/share/mk/build/catman/eqn.mk b/share/mk/build/catman/eqn.mk
new file mode 100644
index 0000000..48b6e75
--- /dev/null
+++ b/share/mk/build/catman/eqn.mk
@@ -0,0 +1,27 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_CATMAN_EQN_INCLUDED
+MAKEFILE_BUILD_CATMAN_EQN_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/pre/tbl.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+
+
+_CATMAN_troff := $(patsubst %.eqn,%.cat.troff,$(_MAN_eqn))
+
+
+$(_CATMAN_troff): %.cat.troff: %.eqn $(MK) | $$(@D)/
+	$(info	$(INFO_)EQN		$@)
+	! ($(EQN) -T$(NROFF_OUT_DEVICE) $(EQNFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.PHONY: build-catman-eqn
+build-catman-eqn: $(_CATMAN_troff);
+
+
+endif  # include guard
diff --git a/share/mk/build/catman/grotty.mk b/share/mk/build/catman/grotty.mk
new file mode 100644
index 0000000..7def414
--- /dev/null
+++ b/share/mk/build/catman/grotty.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_CATMAN_GROTTY_INCLUDED
+MAKEFILE_BUILD_CATMAN_GROTTY_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/catman/troff.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+
+
+_CATMAN := $(patsubst %.cat.set,%.cat,$(_CATMAN_MAN_set) $(_CATMAN_MDOC_set))
+
+
+$(_CATMAN): %.cat: %.cat.set $(MK) | $$(@D)/
+	$(info	$(INFO_)GROTTY		$@)
+	$(GROTTY) $(GROTTYFLAGS) <$< >$@
+
+
+.PHONY: build-catman-grotty
+build-catman-grotty: $(_CATMAN);
+
+
+endif  # include guard
diff --git a/share/lint/groff/man.ignore.grep b/share/mk/build/catman/troff.ignore.grep
index 912eb57..912eb57 100644
--- a/share/lint/groff/man.ignore.grep
+++ b/share/mk/build/catman/troff.ignore.grep
diff --git a/share/mk/build/catman/troff.mk b/share/mk/build/catman/troff.mk
new file mode 100644
index 0000000..c38ba17
--- /dev/null
+++ b/share/mk/build/catman/troff.mk
@@ -0,0 +1,85 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_CATMAN_TROFF_INCLUDED
+MAKEFILE_BUILD_CATMAN_TROFF_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_XFAIL_CATMAN_MAN_set := \
+	$(_MANDIR)/man2/fanotify_init.2.cat.set \
+	$(_MANDIR)/man3/unlocked_stdio.3.cat.set \
+	$(_MANDIR)/man4/console_codes.4.cat.set \
+	$(_MANDIR)/man4/lirc.4.cat.set \
+	$(_MANDIR)/man5/proc_pid_smaps.5.cat.set \
+	$(_MANDIR)/man5/tzfile.5.cat.set \
+	$(_MANDIR)/man7/ascii.7.cat.set \
+	$(_MANDIR)/man7/bpf-helpers.7.cat.set \
+	$(_MANDIR)/man7/charsets.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-1.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-2.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-3.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-4.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-5.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-6.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-7.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-8.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-9.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-10.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-11.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-13.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-14.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-15.7.cat.set \
+	$(_MANDIR)/man7/iso_8859-16.7.cat.set \
+	$(_MANDIR)/man8/tzselect.8.cat.set \
+	$(_MANDIR)/man8/zdump.8.cat.set \
+	$(_MANDIR)/man8/zic.8.cat.set
+
+
+
+troff_man_ignore_grep := $(MAKEFILEDIR)/build/catman/troff.ignore.grep
+
+
+_CATMAN_MAN_set  := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat.set,$(NONSO_MAN))
+_CATMAN_MDOC_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat.set,$(NONSO_MDOC))
+
+
+ifeq ($(SKIP_XFAIL),yes)
+_CATMAN_MAN_set := $(filter-out $(_XFAIL_CATMAN_MAN_set), $(_CATMAN_MAN_set))
+endif
+
+
+$(_CATMAN_MAN_set): %.cat.set: %.cat.troff $(troff_man_ignore_grep) $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -man $(TROFFFLAGS) $(NROFFFLAGS) <$< 2>&1 >$@ \
+	   | $(GREP) -v -f '$(troff_man_ignore_grep)' \
+	   || $(TRUE); \
+	) \
+	| $(GREP) ^ >&2
+
+$(_CATMAN_MDOC_set): %.cat.set: %.cat.troff $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -mdoc $(TROFFFLAGS) $(NROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.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;
+
+
+endif  # include guard
diff --git a/share/mk/build/examples/_.mk b/share/mk/build/examples/_.mk
new file mode 100644
index 0000000..c01a952
--- /dev/null
+++ b/share/mk/build/examples/_.mk
@@ -0,0 +1,28 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_EX_DIR_INCLUDED
+MAKEFILE_BUILD_EX_DIR_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_PAGEEXDIRS := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.d/,$(NONSO_MAN))
+
+
+$(_PAGEEXDIRS):
+	+$(info	$(INFO_)MKDIR		$@)
+	+$(MKDIR) -p $@
+	+$(TOUCH) $@
+
+
+.PHONY: build-ex
+build-ex: build-ex-ld;
+
+
+endif  # include guard
diff --git a/share/mk/build/examples/cc.mk b/share/mk/build/examples/cc.mk
new file mode 100644
index 0000000..6513fbe
--- /dev/null
+++ b/share/mk/build/examples/cc.mk
@@ -0,0 +1,54 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_EX_CC_INCLUDED
+MAKEFILE_BUILD_EX_CC_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/examples/src.mk
+include $(MAKEFILEDIR)/configure/build-depends/cc.mk
+include $(MAKEFILEDIR)/configure/build-depends/cpp.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_UNITS_ex_o := \
+	$(_MANDIR)/man2/bpf.2.d/bpf.o \
+	$(_MANDIR)/man2/seccomp.2.d/seccomp.o \
+	$(_MANDIR)/man2/sigaction.2.d/sigaction.o \
+	$(_MANDIR)/man2/spu_run.2.d/spu_run.o \
+	$(_MANDIR)/man2/_syscall.2.d/_syscall.o \
+	$(_MANDIR)/man3/circleq.3.d/circleq.o \
+	$(_MANDIR)/man3/encrypt.3.d/encrypt.o \
+	$(_MANDIR)/man3/getsubopt.3.d/getsubopt.o \
+	$(_MANDIR)/man3/hsearch.3.d/hsearch.o \
+	$(_MANDIR)/man3/malloc_info.3.d/malloc_info.o \
+	$(_MANDIR)/man3/mallopt.3.d/mallopt.o \
+	$(_MANDIR)/man3/matherr.3.d/matherr.o \
+	$(_MANDIR)/man3/mcheck.3.d/mcheck.o \
+	$(_MANDIR)/man3/mtrace.3.d/t_mtrace.o \
+	$(_MANDIR)/man3/__ppc_get_timebase.3.d/__ppc_get_timebase.o \
+	$(_MANDIR)/man3/pthread_getcpuclockid.3.d/pthread_getcpuclockid.o \
+	$(_MANDIR)/man3/rtime.3.d/rtime.o \
+	$(_MANDIR)/man3/setbuf.3.d/setbuf.o \
+	$(_MANDIR)/man3/stpncpy.3.d/stpncpy.o \
+	$(_MANDIR)/man3head/printf.h.3head.d/register_printf_specifier.o
+
+
+_UNITS_ex_o := $(patsubst %.c,%.o,$(_UNITS_ex_c))
+ifeq ($(SKIP_XFAIL),yes)
+_UNITS_ex_o := $(filter-out $(_XFAIL_UNITS_ex_o), $(_UNITS_ex_o))
+endif
+
+
+$(_UNITS_ex_o): %.o: %.c $(MK)
+	$(info	$(INFO_)CC		$@)
+	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+
+
+.PHONY: build-ex-cc
+build-ex-cc:  $(_UNITS_ex_o);
+
+
+endif  # include guard
diff --git a/share/mk/build/examples/ld.mk b/share/mk/build/examples/ld.mk
new file mode 100644
index 0000000..9d5535d
--- /dev/null
+++ b/share/mk/build/examples/ld.mk
@@ -0,0 +1,51 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_EX_LD_INCLUDED
+MAKEFILE_BUILD_EX_LD_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/examples/cc.mk
+include $(MAKEFILEDIR)/configure/build-depends/ld.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_UNITS_ex_bin := \
+	$(_MANDIR)/man2/add_key.2.d/add_key \
+	$(_MANDIR)/man2/keyctl.2.d/key_instantiate \
+	$(_MANDIR)/man2/request_key.2.d/t_request_key \
+	$(_MANDIR)/man2/select_tut.2.d/select \
+	$(_MANDIR)/man2/shmop.2.d/svshm_string_read \
+	$(_MANDIR)/man3/cacos.3.d/cacos \
+	$(_MANDIR)/man3/cacosh.3.d/cacosh \
+	$(_MANDIR)/man3/catan.3.d/catan \
+	$(_MANDIR)/man3/catanh.3.d/catanh \
+	$(_MANDIR)/man3/getaddrinfo_a.3.d/async \
+	$(_MANDIR)/man3/inet_net_pton.3.d/inet_net_pton \
+	$(_MANDIR)/man3/list.3.d/list \
+	$(_MANDIR)/man3/mallinfo.3.d/mallinfo \
+	$(_MANDIR)/man3/slist.3.d/slist \
+	$(_MANDIR)/man3/stailq.3.d/stailq \
+	$(_MANDIR)/man3/strncat.3.d/strncat \
+	$(_MANDIR)/man3/tailq.3.d/tailq \
+	$(_MANDIR)/man3/tsearch.3.d/tsearch
+
+
+_UNITS_ex_bin := $(patsubst %.o,%,$(_UNITS_ex_o))
+ifeq ($(SKIP_XFAIL),yes)
+_UNITS_ex_bin := $(filter-out $(_XFAIL_UNITS_ex_bin), $(_UNITS_ex_bin))
+endif
+
+
+$(_UNITS_ex_bin): %: %.o $(MK)
+	$(info	$(INFO_)LD		$@)
+	$(LD) $(LDFLAGS) -o $@ $< $(LDLIBS)
+
+
+.PHONY: build-ex-ld
+build-ex-ld: $(_UNITS_ex_bin);
+
+
+endif  # include guard
diff --git a/share/mk/build/examples/src.mk b/share/mk/build/examples/src.mk
new file mode 100644
index 0000000..f47a713
--- /dev/null
+++ b/share/mk/build/examples/src.mk
@@ -0,0 +1,55 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_EX_SRC_INCLUDED
+MAKEFILE_BUILD_EX_SRC_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/findutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/mandoc.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_UNITS_ex_src := \
+	$(patsubst $(MANDIR)/%, $(_MANDIR)/%, \
+		$(shell \
+			$(FIND) $(MANDIR)/* -type f \
+			| $(GREP) '$(MANEXT)' \
+			| $(XARGS) $(GREP) -H '^\.\\" SRC BEGIN ' \
+			| $(SED) 's,:\.\\" SRC BEGIN (,.d/,' \
+			| $(SED) 's/)//' \
+			| $(SORTMAN) \
+			| $(SED) 's,:,\\:,g' \
+		) \
+	)
+_UNITS_ex_h := $(filter %.h,$(_UNITS_ex_src))
+_UNITS_ex_c := $(filter %.c,$(_UNITS_ex_src))
+
+
+$(_UNITS_ex_src): $$(patsubst $(_MANDIR)/%.d,$(MANDIR)/%,$$(@D)) $(MK) | $$(@D)/
+$(_UNITS_ex_c):   $$(filter $$(@D)/%.h,$(_UNITS_ex_h))
+$(_UNITS_ex_src):
+	$(info	$(INFO_)SED		$@)
+	<$< \
+	$(SED) -n \
+		-e '/^\.TH/,/^\.SH/{/^\.SH/!p}' \
+		-e '/^\.SH EXAMPLES/p' \
+		-e "/^\... SRC BEGIN ($(@F))$$/,/^\... SRC END$$/p" \
+	| $(MANDOC) -Tutf8 \
+	| $(HEAD) -n-2 \
+	| $(SED) '/^[^ ]/d' \
+	| $(SED) 's/^       //' \
+	>$@
+
+
+.PHONY: build-ex-src
+build-ex-src: $(_UNITS_ex_src);
+
+
+endif  # include guard
diff --git a/share/mk/build/groff.mk b/share/mk/build/groff.mk
deleted file mode 100644
index 2a5a3de..0000000
--- a/share/mk/build/groff.mk
+++ /dev/null
@@ -1,39 +0,0 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_BUILD_GROFF_INCLUDED
-MAKEFILE_BUILD_GROFF_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-DEFAULT_EQNFLAGS :=
-EXTRA_EQNFLAGS   :=
-EQNFLAGS         := $(DEFAULT_EQNFLAGS) $(EXTRA_EQNFLAGS)
-EQN              := eqn
-
-DEFAULT_TROFFFLAGS   := -wbreak
-EXTRA_TROFFFLAGS     :=
-TROFFFLAGS           := $(DEFAULT_TROFFFLAGS) $(EXTRA_TROFFFLAGS)
-TROFF                := troff
-
-DEFAULT_TROFFFLAGS_MAN := \
-	$(TROFFFLAGS) \
-	-man
-EXTRA_TROFFFLAGS_MAN   :=
-TROFFFLAGS_MAN         := $(DEFAULT_TROFFFLAGS_MAN) $(EXTRA_TROFFFLAGS_MAN)
-
-DEFAULT_TROFFFLAGS_MDOC := \
-	$(TROFFFLAGS) \
-	-mdoc
-EXTRA_TROFFFLAGS_MDOC   :=
-TROFFFLAGS_MDOC         := $(DEFAULT_TROFFFLAGS_MDOC) $(EXTRA_TROFFFLAGS_MDOC)
-
-
-endif  # include guard
diff --git a/share/mk/build/html.mk b/share/mk/build/html.mk
deleted file mode 100644
index 084654d..0000000
--- a/share/mk/build/html.mk
+++ /dev/null
@@ -1,42 +0,0 @@
-########################################################################
-# Copyright 2021-2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_BUILD_HTML_INCLUDED
-MAKEFILE_BUILD_HTML_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-htmlext  := .html
-_HTMLDIR := $(builddir)/html
-
-
-DEFAULT_MAN2HTMLFLAGS :=
-EXTRA_MAN2HTMLFLAGS   :=
-MAN2HTMLFLAGS         := $(DEFAULT_MAN2HTMLFLAGS) $(EXTRA_MAN2HTMLFLAGS)
-MAN2HTML              := man2html
-
-
-_HTMLPAGES := $(patsubst $(MANDIR)/%,$(_HTMLDIR)/%$(htmlext),$(MANPAGES))
-
-
-# Use with
-#  make MAN2HTMLFLAGS=whatever html
-# The sed removes the lines "Content-type: text/html\n\n"
-$(_HTMLPAGES): $(_HTMLDIR)/%$(htmlext): $(MANDIR)/% | $$(@D)/
-	$(info MAN2HTML	$@)
-	$(MAN2HTML) $(MAN2HTMLFLAGS) $< \
-	| $(SED) -e 1,2d >$@
-
-
-.PHONY: build-html html
-build-html html: $(_HTMLPAGES);
-
-
-endif  # include guard
diff --git a/share/mk/build/html/_.mk b/share/mk/build/html/_.mk
new file mode 100644
index 0000000..b3e3041
--- /dev/null
+++ b/share/mk/build/html/_.mk
@@ -0,0 +1,13 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_HTML_INCLUDED
+MAKEFILE_BUILD_HTML_INCLUDED := 1
+
+
+.PHONY: build-html
+build-html: build-html-post-grohtml;
+
+
+endif  # include guard
diff --git a/share/mk/build/html/post-grohtml.mk b/share/mk/build/html/post-grohtml.mk
new file mode 100644
index 0000000..fe77776
--- /dev/null
+++ b/share/mk/build/html/post-grohtml.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_HTML_POST_GROHTML_INCLUDED
+MAKEFILE_BUILD_HTML_POST_GROHTML_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/html/troff.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff.mk
+
+
+_HTMLMAN := $(patsubst %.html.set,%.html,$(_HTMLMAN_MAN_set) $(_HTMLMAN_MDOC_set))
+
+
+$(_HTMLMAN): %.html: %.html.set $(MK) | $$(@D)/
+	$(info	$(INFO_)POST_GROHTML	$@)
+	$(POST_GROHTML) $(POST_GROHTMLFLAGS) <$< >$@
+
+
+.PHONY: build-html-post-grohtml
+build-html-post-grohtml: $(_HTMLMAN);
+
+
+endif  # include guard
diff --git a/share/mk/build/html/troff.mk b/share/mk/build/html/troff.mk
new file mode 100644
index 0000000..010c211
--- /dev/null
+++ b/share/mk/build/html/troff.mk
@@ -0,0 +1,58 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_HTML_TROFF_INCLUDED
+MAKEFILE_BUILD_HTML_TROFF_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_XFAIL_HTMLMAN_MAN_set := \
+	$(_MANDIR)/man2/fanotify_init.2.html.set \
+	$(_MANDIR)/man2/membarrier.2.html.set \
+	$(_MANDIR)/man5/proc.5.html.set \
+	$(_MANDIR)/man7/bpf-helpers.7.html.set \
+	$(_MANDIR)/man7/charsets.7.html.set \
+	$(_MANDIR)/man7/iso_8859-16.7.html.set \
+	$(_MANDIR)/man7/iso_8859-6.7.html.set \
+	$(_MANDIR)/man8/zic.8.html.set
+
+
+_HTMLMAN_MAN_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.html.set,$(NONSO_MAN))
+_HTMLMAN_MDOC_set:= $(patsubst $(MANDIR)/%,$(_MANDIR)/%.html.set,$(NONSO_MDOC))
+
+
+ifeq ($(SKIP_XFAIL),yes)
+_HTMLMAN_MAN_set := $(filter-out $(_XFAIL_HTMLMAN_MAN_set), $(_HTMLMAN_MAN_set))
+endif
+
+
+$(_HTMLMAN_MAN_set): %.html.set: %.eqn $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -man -Thtml $(TROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+$(_HTMLMAN_MDOC_set): %.html.set: %.eqn $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -mdoc -Thtml $(TROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.PHONY: build-html-troff-man
+build-html-troff-man: $(_HTMLMAN_MAN_set);
+
+.PHONY: build-html-troff-mdoc
+build-html-troff-mdoc: $(_HTMLMAN_MDOC_set);
+
+.PHONY: build-html-troff
+build-html-troff: build-html-troff-man build-html-troff-mdoc;
+
+
+endif  # include guard
diff --git a/share/mk/build/pdf.mk b/share/mk/build/pdf.mk
deleted file mode 100644
index 380c6c6..0000000
--- a/share/mk/build/pdf.mk
+++ /dev/null
@@ -1,68 +0,0 @@
-########################################################################
-# Copyright 2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_BUILD_PDF_INCLUDED
-MAKEFILE_BUILD_PDF_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/build/groff.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-DEFAULT_GROPDFFLAGS :=
-EXTRA_GROPDFFLAGS   :=
-GROPDFFLAGS         := $(DEFAULT_GROPDFFLAGS) $(EXTRA_GROPDFFLAGS)
-GROPDF              := gropdf
-
-
-_PDFMAN_troff   := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.pdf.troff,$(NONSO_MAN) $(NONSO_MDOC))
-_PDFMAN_MAN_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.pdf.set,$(NONSO_MAN))
-_PDFMAN_MDOC_set:= $(patsubst $(MANDIR)/%,$(_MANDIR)/%.pdf.set,$(NONSO_MDOC))
-_PDFMAN         := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.pdf,$(NONSO_MAN) $(NONSO_MDOC))
-
-
-$(_PDFMAN_troff): %.pdf.troff: %.eqn | $$(@D)/
-	$(info	EQN	$@)
-	! ($(EQN) -Tpdf $(EQNFLAGS) <$< 2>&1 >$@) \
-	| $(GREP) ^ >&2
-
-$(_PDFMAN_MAN_set): %.pdf.set: %.pdf.troff | $$(@D)/
-	$(info	TROFF	$@)
-	! ($(TROFF) -Tpdf $(TROFFFLAGS_MAN) <$< 2>&1 >$@) \
-	| $(GREP) ^ >&2
-
-$(_PDFMAN_MDOC_set): %.pdf.set: %.pdf.troff | $$(@D)/
-	$(info	TROFF	$@)
-	! ($(TROFF) -Tpdf $(TROFFFLAGS_MDOC) <$< 2>&1 >$@) \
-	| $(GREP) ^ >&2
-
-$(_PDFMAN): %.pdf: %.pdf.set | $$(@D)/
-	$(info	GROPDF	$@)
-	$(GROPDF) $(GROPDFFLAGS) <$< >$@
-
-
-.PHONY: build-pdf-eqn
-build-pdf-eqn: $(_PDFMAN_troff);
-
-.PHONY: build-pdf-troff-man
-build-pdf-troff-man: $(_PDFMAN_MAN_set);
-
-.PHONY: build-pdf-troff-mdoc
-build-pdf-troff-mdoc: $(_PDFMAN_MDOC_set);
-
-.PHONY: build-pdf-troff
-build-pdf-troff: build-pdf-troff-man build-pdf-troff-mdoc;
-
-.PHONY: build-pdf-gropdf
-build-pdf-gropdf: $(_PDFMAN);
-
-.PHONY: build-pdf
-build-pdf: build-pdf-gropdf;
-
-
-endif  # include guard
diff --git a/share/mk/build/pdf/_.mk b/share/mk/build/pdf/_.mk
new file mode 100644
index 0000000..f6660aa
--- /dev/null
+++ b/share/mk/build/pdf/_.mk
@@ -0,0 +1,13 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PDF_INCLUDED
+MAKEFILE_BUILD_PDF_INCLUDED := 1
+
+
+.PHONY: build-pdf
+build-pdf: build-pdf-gropdf;
+
+
+endif  # include guard
diff --git a/share/mk/build/pdf/eqn.mk b/share/mk/build/pdf/eqn.mk
new file mode 100644
index 0000000..bb0598b
--- /dev/null
+++ b/share/mk/build/pdf/eqn.mk
@@ -0,0 +1,27 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PDF_EQN_INCLUDED
+MAKEFILE_BUILD_PDF_EQN_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/pre/tbl.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+
+
+_PDFMAN_troff := $(patsubst %.eqn,%.pdf.troff,$(_MAN_eqn))
+
+
+$(_PDFMAN_troff): %.pdf.troff: %.eqn $(MK) | $$(@D)/
+	$(info	$(INFO_)EQN		$@)
+	! ($(EQN) -Tpdf $(EQNFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.PHONY: build-pdf-eqn
+build-pdf-eqn: $(_PDFMAN_troff);
+
+
+endif  # include guard
diff --git a/share/mk/build/pdf/gropdf.mk b/share/mk/build/pdf/gropdf.mk
new file mode 100644
index 0000000..0913122
--- /dev/null
+++ b/share/mk/build/pdf/gropdf.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PDF_GROPDF_INCLUDED
+MAKEFILE_BUILD_PDF_GROPDF_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/pdf/troff.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff.mk
+
+
+_PDFMAN := $(patsubst %.pdf.set,%.pdf,$(_PDFMAN_MAN_set) $(_PDFMAN_MDOC_set))
+
+
+$(_PDFMAN): %.pdf: %.pdf.set $(MK) | $$(@D)/
+	$(info	$(INFO_)GROPDF		$@)
+	$(GROPDF) $(GROPDFFLAGS) <$< >$@
+
+
+.PHONY: build-pdf-gropdf
+build-pdf-gropdf: $(_PDFMAN);
+
+
+endif  # include guard
diff --git a/share/mk/build/pdf/troff.mk b/share/mk/build/pdf/troff.mk
new file mode 100644
index 0000000..5254d5d
--- /dev/null
+++ b/share/mk/build/pdf/troff.mk
@@ -0,0 +1,75 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PDF_TROFF_INCLUDED
+MAKEFILE_BUILD_PDF_TROFF_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_XFAIL_PDFMAN_MAN_set := \
+	$(_MANDIR)/man1/iconv.1.pdf.set \
+	$(_MANDIR)/man2/fanotify_init.2.pdf.set \
+	$(_MANDIR)/man2/syscall.2.pdf.set \
+	$(_MANDIR)/man3/newlocale.3.pdf.set \
+	$(_MANDIR)/man7/address_families.7.pdf.set \
+	$(_MANDIR)/man7/armscii-8.7.pdf.set \
+	$(_MANDIR)/man7/ascii.7.pdf.set \
+	$(_MANDIR)/man7/bpf-helpers.7.pdf.set \
+	$(_MANDIR)/man7/charsets.7.pdf.set \
+	$(_MANDIR)/man7/cp1251.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-2.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-3.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-4.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-5.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-6.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-7.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-8.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-10.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-11.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-13.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-14.7.pdf.set \
+	$(_MANDIR)/man7/iso_8859-16.7.pdf.set \
+	$(_MANDIR)/man7/koi8-r.7.pdf.set \
+	$(_MANDIR)/man7/koi8-u.7.pdf.set \
+	$(_MANDIR)/man7/vdso.7.pdf.set
+
+
+_PDFMAN_MAN_set  := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.pdf.set,$(NONSO_MAN))
+_PDFMAN_MDOC_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.pdf.set,$(NONSO_MDOC))
+
+
+ifeq ($(SKIP_XFAIL),yes)
+_PDFMAN_MAN_set := $(filter-out $(_XFAIL_PDFMAN_MAN_set), $(_PDFMAN_MAN_set))
+endif
+
+
+$(_PDFMAN_MAN_set): %.pdf.set: %.pdf.troff $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -man -Tpdf $(TROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+$(_PDFMAN_MDOC_set): %.pdf.set: %.pdf.troff $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -mdoc -Tpdf $(TROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.PHONY: build-pdf-troff-man
+build-pdf-troff-man: $(_PDFMAN_MAN_set);
+
+.PHONY: build-pdf-troff-mdoc
+build-pdf-troff-mdoc: $(_PDFMAN_MDOC_set);
+
+.PHONY: build-pdf-troff
+build-pdf-troff: build-pdf-troff-man build-pdf-troff-mdoc;
+
+
+endif  # include guard
diff --git a/share/mk/build/pre.mk b/share/mk/build/pre.mk
deleted file mode 100644
index 4c458fa..0000000
--- a/share/mk/build/pre.mk
+++ /dev/null
@@ -1,47 +0,0 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_BUILD_PRE_INCLUDED
-MAKEFILE_BUILD_PRE_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-DEFAULT_PRECONVFLAGS :=
-EXTRA_PRECONVFLAGS   :=
-PRECONVFLAGS         := $(DEFAULT_PRECONVFLAGS) $(EXTRA_PRECONVFLAGS)
-PRECONV              := preconv
-
-TBL := tbl
-
-
-_MAN_tbl := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.tbl,$(NONSO_MAN) $(NONSO_MDOC))
-_MAN_eqn := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.eqn,$(NONSO_MAN) $(NONSO_MDOC))
-
-
-$(_MAN_tbl): $(_MANDIR)/%.tbl: $(MANDIR)/% | $$(@D)/
-	$(info	PRECONV	$@)
-	$(PRECONV) $(PRECONVFLAGS) $< >$@
-
-$(_MAN_eqn): %.eqn: %.tbl | $$(@D)/
-	$(info	TBL	$@)
-	$(TBL) <$< >$@
-
-
-.PHONY: build-pre-preconv
-build-pre-preconv: $(_MAN_tbl);
-
-.PHONY: build-pre-tbl
-build-pre-tbl: $(_MAN_eqn);
-
-.PHONY: build-pre
-build-pre: build-pre-tbl;
-
-
-endif  # include guard
diff --git a/share/mk/build/pre/_.mk b/share/mk/build/pre/_.mk
new file mode 100644
index 0000000..f0e86f4
--- /dev/null
+++ b/share/mk/build/pre/_.mk
@@ -0,0 +1,13 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PRE_INCLUDED
+MAKEFILE_BUILD_PRE_INCLUDED := 1
+
+
+.PHONY: build-pre
+build-pre: build-pre-tbl;
+
+
+endif  # include guard
diff --git a/share/mk/build/pre/preconv.mk b/share/mk/build/pre/preconv.mk
new file mode 100644
index 0000000..73aa1da
--- /dev/null
+++ b/share/mk/build/pre/preconv.mk
@@ -0,0 +1,27 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PRE_PRECONV_INCLUDED
+MAKEFILE_BUILD_PRE_PRECONV_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_MAN_tbl := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.tbl,$(NONSO_MAN) $(NONSO_MDOC))
+
+
+$(_MAN_tbl): $(_MANDIR)/%.tbl: $(MANDIR)/% $(MK) | $$(@D)/
+	$(info	$(INFO_)PRECONV		$@)
+	$(PRECONV) $(PRECONVFLAGS) $< >$@
+
+
+.PHONY: build-pre-preconv
+build-pre-preconv: $(_MAN_tbl);
+
+
+endif  # include guard
diff --git a/share/mk/build/pre/tbl.mk b/share/mk/build/pre/tbl.mk
new file mode 100644
index 0000000..24486f8
--- /dev/null
+++ b/share/mk/build/pre/tbl.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PRE_TBL_INCLUDED
+MAKEFILE_BUILD_PRE_TBL_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/pre/preconv.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+
+
+_MAN_eqn := $(patsubst %.tbl,%.eqn,$(_MAN_tbl))
+
+
+$(_MAN_eqn): %.eqn: %.tbl $(MK) | $$(@D)/
+	$(info	$(INFO_)TBL		$@)
+	$(TBL) <$< >$@
+
+
+.PHONY: build-pre-tbl
+build-pre-tbl: $(_MAN_eqn);
+
+
+endif  # include guard
diff --git a/share/mk/build/ps.mk b/share/mk/build/ps.mk
deleted file mode 100644
index 5b29dc1..0000000
--- a/share/mk/build/ps.mk
+++ /dev/null
@@ -1,68 +0,0 @@
-########################################################################
-# Copyright 2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_BUILD_PS_INCLUDED
-MAKEFILE_BUILD_PS_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/build/groff.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-DEFAULT_GROPSFLAGS :=
-EXTRA_GROPSFLAGS   :=
-GROPSFLAGS         := $(DEFAULT_GROPSFLAGS) $(EXTRA_GROPSFLAGS)
-GROPS              := grops
-
-
-_PSMAN_troff   := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.ps.troff,$(NONSO_MAN) $(NONSO_MDOC))
-_PSMAN_MAN_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.ps.set,$(NONSO_MAN))
-_PSMAN_MDOC_set:= $(patsubst $(MANDIR)/%,$(_MANDIR)/%.ps.set,$(NONSO_MDOC))
-_PSMAN         := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.ps,$(NONSO_MAN) $(NONSO_MDOC))
-
-
-$(_PSMAN_troff): %.ps.troff: %.eqn | $$(@D)/
-	$(info	EQN	$@)
-	! ($(EQN) -Tps $(EQNFLAGS) <$< 2>&1 >$@) \
-	| $(GREP) ^ >&2
-
-$(_PSMAN_MAN_set): %.ps.set: %.ps.troff | $$(@D)/
-	$(info	TROFF	$@)
-	! ($(TROFF) -Tps $(TROFFFLAGS_MAN) <$< 2>&1 >$@) \
-	| $(GREP) ^ >&2
-
-$(_PSMAN_MDOC_set): %.ps.set: %.ps.troff | $$(@D)/
-	$(info	TROFF	$@)
-	! ($(TROFF) -Tps $(TROFFFLAGS_MDOC) <$< 2>&1 >$@) \
-	| $(GREP) ^ >&2
-
-$(_PSMAN): %.ps: %.ps.set | $$(@D)/
-	$(info	GROPS	$@)
-	$(GROPS) $(GROPSFLAGS) <$< >$@
-
-
-.PHONY: build-ps-eqn
-build-ps-eqn: $(_PSMAN_troff);
-
-.PHONY: build-ps-troff-man
-build-ps-troff-man: $(_PSMAN_MAN_set);
-
-.PHONY: build-ps-troff-mdoc
-build-ps-troff-mdoc: $(_PSMAN_MDOC_set);
-
-.PHONY: build-ps-troff
-build-ps-troff: build-ps-troff-man build-ps-troff-mdoc;
-
-.PHONY: build-ps-grops
-build-ps-grops: $(_PSMAN);
-
-.PHONY: build-ps
-build-ps: build-ps-grops;
-
-
-endif  # include guard
diff --git a/share/mk/build/ps/_.mk b/share/mk/build/ps/_.mk
new file mode 100644
index 0000000..b92ebfc
--- /dev/null
+++ b/share/mk/build/ps/_.mk
@@ -0,0 +1,13 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PS_INCLUDED
+MAKEFILE_BUILD_PS_INCLUDED := 1
+
+
+.PHONY: build-ps
+build-ps: build-ps-grops;
+
+
+endif  # include guard
diff --git a/share/mk/build/ps/eqn.mk b/share/mk/build/ps/eqn.mk
new file mode 100644
index 0000000..a4c921e
--- /dev/null
+++ b/share/mk/build/ps/eqn.mk
@@ -0,0 +1,27 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PS_EQN_INCLUDED
+MAKEFILE_BUILD_PS_EQN_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/pre/tbl.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+
+
+_PSMAN_troff := $(patsubst %.eqn,%.ps.troff,$(_MAN_eqn))
+
+
+$(_PSMAN_troff): %.ps.troff: %.eqn $(MK) | $$(@D)/
+	$(info	$(INFO_)EQN		$@)
+	! ($(EQN) -Tps $(EQNFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.PHONY: build-ps-eqn
+build-ps-eqn: $(_PSMAN_troff);
+
+
+endif  # include guard
diff --git a/share/mk/build/ps/grops.mk b/share/mk/build/ps/grops.mk
new file mode 100644
index 0000000..cca9b44
--- /dev/null
+++ b/share/mk/build/ps/grops.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PS_GROPS_INCLUDED
+MAKEFILE_BUILD_PS_GROPS_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/ps/troff.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+
+
+_PSMAN := $(patsubst %.ps.set,%.ps,$(_PSMAN_MAN_set) $(_PSMAN_MDOC_set))
+
+
+$(_PSMAN): %.ps: %.ps.set $(MK) | $$(@D)/
+	$(info	$(INFO_)GROPS		$@)
+	$(GROPS) $(GROPSFLAGS) <$< >$@
+
+
+.PHONY: build-ps-grops
+build-ps-grops: $(_PSMAN);
+
+
+endif  # include guard
diff --git a/share/mk/build/ps/troff.mk b/share/mk/build/ps/troff.mk
new file mode 100644
index 0000000..1492821
--- /dev/null
+++ b/share/mk/build/ps/troff.mk
@@ -0,0 +1,75 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_BUILD_PS_TROFF_INCLUDED
+MAKEFILE_BUILD_PS_TROFF_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/groff-base.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_XFAIL_PSMAN_MAN_set := \
+	$(_MANDIR)/man1/iconv.1.ps.set \
+	$(_MANDIR)/man2/fanotify_init.2.ps.set \
+	$(_MANDIR)/man2/syscall.2.ps.set \
+	$(_MANDIR)/man3/newlocale.3.ps.set \
+	$(_MANDIR)/man7/address_families.7.ps.set \
+	$(_MANDIR)/man7/armscii-8.7.ps.set \
+	$(_MANDIR)/man7/ascii.7.ps.set \
+	$(_MANDIR)/man7/bpf-helpers.7.ps.set \
+	$(_MANDIR)/man7/charsets.7.ps.set \
+	$(_MANDIR)/man7/cp1251.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-2.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-3.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-4.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-5.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-6.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-7.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-8.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-10.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-11.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-13.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-14.7.ps.set \
+	$(_MANDIR)/man7/iso_8859-16.7.ps.set \
+	$(_MANDIR)/man7/koi8-r.7.ps.set \
+	$(_MANDIR)/man7/koi8-u.7.ps.set \
+	$(_MANDIR)/man7/vdso.7.ps.set
+
+
+_PSMAN_MAN_set := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.ps.set,$(NONSO_MAN))
+_PSMAN_MDOC_set:= $(patsubst $(MANDIR)/%,$(_MANDIR)/%.ps.set,$(NONSO_MDOC))
+
+
+ifeq ($(SKIP_XFAIL),yes)
+_PSMAN_MAN_set := $(filter-out $(_XFAIL_PSMAN_MAN_set), $(_PSMAN_MAN_set))
+endif
+
+
+$(_PSMAN_MAN_set): %.ps.set: %.ps.troff $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -man -Tps $(TROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+$(_PSMAN_MDOC_set): %.ps.set: %.ps.troff $(MK) | $$(@D)/
+	$(info	$(INFO_)TROFF		$@)
+	! ($(TROFF) -mdoc -Tps $(TROFFFLAGS) <$< 2>&1 >$@) \
+	| $(GREP) ^ >&2
+
+
+.PHONY: build-ps-troff-man
+build-ps-troff-man: $(_PSMAN_MAN_set);
+
+.PHONY: build-ps-troff-mdoc
+build-ps-troff-mdoc: $(_PSMAN_MDOC_set);
+
+.PHONY: build-ps-troff
+build-ps-troff: build-ps-troff-man build-ps-troff-mdoc;
+
+
+endif  # include guard
diff --git a/share/mk/build/src.mk b/share/mk/build/src.mk
deleted file mode 100644
index 365c256..0000000
--- a/share/mk/build/src.mk
+++ /dev/null
@@ -1,117 +0,0 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_BUILD_SRC_INCLUDED
-MAKEFILE_BUILD_SRC_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/src.mk
-include $(MAKEFILEDIR)/verbose.mk
-
-
-PKGCONF_LIBS := libbsd-overlay
-
-
-DEFAULT_CPPFLAGS := $(shell $(PKGCONF) --cflags $(PKGCONF_LIBS) $(HIDE_ERR))
-EXTRA_CPPFLAGS   :=
-CPPFLAGS         := $(DEFAULT_CPPFLAGS) $(EXTRA_CPPFLAGS)
-
-DEFAULT_CFLAGS := \
-	-std=gnu17 \
-	-Wall \
-	-Wextra \
-	-Wstrict-prototypes \
-	-Wdeclaration-after-statement \
-	-Werror \
-	-Wno-error=unused-parameter \
-	-Wno-error=sign-compare \
-	-Wno-error=format \
-	-Wno-error=uninitialized
-	#-Wno-error=declaration-after-statement
-EXTRA_CFLAGS   :=
-CFLAGS         := $(DEFAULT_CFLAGS) $(EXTRA_CFLAGS)
-
-DEFAULT_LDFLAGS := \
-	-Wl,--as-needed \
-	-Wl,--no-allow-shlib-undefined \
-	-Wl,--no-copy-dt-needed-entries \
-	-Wl,--no-undefined \
-	$(shell $(PKGCONF) --libs-only-L $(PKGCONF_LIBS) $(HIDE_ERR)) \
-	$(shell $(PKGCONF) --libs-only-other $(PKGCONF_LIBS) $(HIDE_ERR))
-EXTRA_LDFLAGS   :=
-LDFLAGS         := $(DEFAULT_LDFLAGS) $(EXTRA_LDFLAGS)
-
-DEFAULT_LDLIBS := \
-	-lc \
-	$(shell $(PKGCONF) --libs-only-l $(PKGCONF_LIBS) $(HIDE_ERR))
-EXTRA_LDLIBS   :=
-LDLIBS         := $(DEFAULT_LDLIBS) $(EXTRA_LDLIBS)
-
-
-CC  := cc
-LD  := $(CC) $(CFLAGS)
-
-
-_SRCPAGEDIRS   := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.d/,$(NONSO_MAN))
-
-_UNITS_src_src := $(patsubst $(MANDIR)/%,$(_MANDIR)/%,$(shell \
-		$(FIND) $(MANDIR)/* -type f \
-		| $(GREP) '$(MANEXT)' \
-		| $(XARGS) $(GREP) -H '^\.\\" SRC BEGIN ' \
-		| $(SED) 's,:\.\\" SRC BEGIN (,.d/,' \
-		| $(SED) 's/)//' \
-		| $(SORT) \
-		| $(SED) 's,:,\\:,g'))
-_UNITS_src_h   := $(filter %.h,$(_UNITS_src_src))
-_UNITS_src_c   := $(filter %.c,$(_UNITS_src_src))
-_UNITS_src_o   := $(patsubst %.c,%.o,$(_UNITS_src_c))
-_UNITS_src_bin := $(patsubst %.c,%,$(_UNITS_src_c))
-
-
-$(_SRCPAGEDIRS): $(_MANDIR)/%.d/: $(MANDIR)/%
-	+$(info MKDIR	$@)
-	+$(MKDIR) $@
-	+touch $@
-
-$(_UNITS_src_src): $$(patsubst $(_MANDIR)/%.d,$(MANDIR)/%,$$(@D)) | $$(@D)/
-$(_UNITS_src_c):   $$(filter $$(@D)/%.h,$(_UNITS_src_h))
-$(_UNITS_src_src):
-	$(info SED	$@)
-	<$< \
-	$(SED) -n \
-		-e '/^\.TH/,/^\.SH/{/^\.SH/!p}' \
-		-e '/^\.SH EXAMPLES/p' \
-		-e "/^\... SRC BEGIN ($(@F))$$/,/^\... SRC END$$/p" \
-	| $(MANDOC) -Tutf8 \
-	| $(SED) '/^[^ ]/d' \
-	| $(SED) 's/^       //' \
-	>$@
-
-$(_UNITS_src_o): %.o: %.c
-	$(info CC	$@)
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
-
-$(_UNITS_src_bin): %: %.o
-	$(info LD	$@)
-	$(LD) $(LDFLAGS) -o $@ $< $(LDLIBS)
-
-
-.PHONY: build-src-c
-build-src-c:   $(_UNITS_src_c);
-
-.PHONY: build-src-cc
-build-src-cc:  $(_UNITS_src_o);
-
-.PHONY: build-src-ld
-build-src-ld:  $(_UNITS_src_bin);
-
-.PHONY: build-src
-build-src: build-src-ld
-
-
-endif  # include guard
diff --git a/share/mk/check/_.mk b/share/mk/check/_.mk
index 6326d1f..0a20317 100644
--- a/share/mk/check/_.mk
+++ b/share/mk/check/_.mk
@@ -1,18 +1,13 @@
-########################################################################
-# Copyright 2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_CHECK_INCLUDED
 MAKEFILE_CHECK_INCLUDED := 1
 
 
-check := check-catman
-
-
 .PHONY: check
-check: $(check);
+check: check-catman;
 
 
 endif  # include guard
diff --git a/share/mk/check/catman.mk b/share/mk/check/catman.mk
deleted file mode 100644
index 8a0d3b6..0000000
--- a/share/mk/check/catman.mk
+++ /dev/null
@@ -1,51 +0,0 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_CHECK_CATMAN_INCLUDED
-MAKEFILE_CHECK_CATMAN_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/build/catman.mk
-include $(MAKEFILEDIR)/check/_.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-DEFAULT_COLFLAGS := \
-	-b \
-	-p \
-	-x
-EXTRA_COLFLAGS   :=
-COLFLAGS         := $(DEFAULT_COLFLAGS) $(EXTRA_COLFLAGS)
-COL              := col
-
-
-_CHECK_catman_grep := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.cat.grep,$(NONSO_MAN) $(NONSO_MDOC))
-_CHECK_catman := $(patsubst $(MANDIR)/%,$(_MANDIR)/%.check-catman.touch,$(NONSO_MAN) $(NONSO_MDOC))
-
-
-$(_CHECK_catman_grep): %.grep: % | $$(@D)/
-	$(info	COL	$@)
-	$(COL) $(COLFLAGS) <$< >$@
-
-$(_CHECK_catman): %.check-catman.touch: %.cat.grep | $$(@D)/
-	$(info	GREP	$@)
-	! $(GREP) -n '.\{$(MANWIDTH)\}.' $< /dev/null >&2
-	touch $@
-
-
-.PHONY: check-catman-col
-check-catman-col: $(_CHECK_catman_grep);
-
-.PHONY: check-catman-grep
-check-catman-grep: $(_CHECK_catman);
-
-.PHONY: check-catman
-check-catman: check-catman-grep;
-
-
-endif  # include guard
diff --git a/share/mk/check/catman/_.mk b/share/mk/check/catman/_.mk
new file mode 100644
index 0000000..b9bf5a1
--- /dev/null
+++ b/share/mk/check/catman/_.mk
@@ -0,0 +1,13 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CHECK_CATMAN_INCLUDED
+MAKEFILE_CHECK_CATMAN_INCLUDED := 1
+
+
+.PHONY: check-catman
+check-catman: check-catman-grep;
+
+
+endif  # include guard
diff --git a/share/mk/check/catman/col.mk b/share/mk/check/catman/col.mk
new file mode 100644
index 0000000..59104fa
--- /dev/null
+++ b/share/mk/check/catman/col.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CHECK_CATMAN_COL_INCLUDED
+MAKEFILE_CHECK_CATMAN_COL_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/catman/grotty.mk
+include $(MAKEFILEDIR)/configure/build-depends/bsdextrautils.mk
+
+
+_CHECK_catman_grep := $(patsubst %.cat,%.cat.grep,$(_CATMAN))
+
+
+$(_CHECK_catman_grep): %.grep: % $(MK) | $$(@D)/
+	$(info	$(INFO_)COL		$@)
+	$(COL) $(COLFLAGS) <$< >$@
+
+
+.PHONY: check-catman-col
+check-catman-col: $(_CHECK_catman_grep);
+
+
+endif  # include guard
diff --git a/share/mk/check/catman/grep.mk b/share/mk/check/catman/grep.mk
new file mode 100644
index 0000000..fbf99bc
--- /dev/null
+++ b/share/mk/check/catman/grep.mk
@@ -0,0 +1,50 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CHECK_CATMAN_GREP_INCLUDED
+MAKEFILE_CHECK_CATMAN_GREP_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/man.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_CHECK_catman := \
+	$(_MANDIR)/man1/memusage.1.check-catman.touch \
+	$(_MANDIR)/man3/mallopt.3.check-catman.touch \
+	$(_MANDIR)/man4/smartpqi.4.check-catman.touch \
+	$(_MANDIR)/man4/veth.4.check-catman.touch \
+	$(_MANDIR)/man5/proc_buddyinfo.5.check-catman.touch \
+	$(_MANDIR)/man5/proc_pid_fdinfo.5.check-catman.touch \
+	$(_MANDIR)/man5/proc_pid_maps.5.check-catman.touch \
+	$(_MANDIR)/man5/proc_pid_mountinfo.5.check-catman.touch \
+	$(_MANDIR)/man5/proc_pid_net.5.check-catman.touch \
+	$(_MANDIR)/man5/proc_timer_stats.5.check-catman.touch \
+	$(_MANDIR)/man5/proc_version.5.check-catman.touch \
+	$(_MANDIR)/man5/slabinfo.5.check-catman.touch \
+	$(_MANDIR)/man7/keyrings.7.check-catman.touch \
+	$(_MANDIR)/man7/string_copying.7.check-catman.touch \
+	$(_MANDIR)/man7/uri.7.check-catman.touch
+
+
+_CHECK_catman := $(patsubst %.cat.grep,%.check-catman.touch,$(_CHECK_catman_grep))
+ifeq ($(SKIP_XFAIL),yes)
+_CHECK_catman := $(filter-out $(_XFAIL_CHECK_catman), $(_CHECK_catman))
+endif
+
+
+$(_CHECK_catman): %.check-catman.touch: %.cat.grep $(MK) | $$(@D)/
+	$(info	$(INFO_)GREP		$@)
+	! $(GREP) -n '.\{$(MANWIDTH)\}.' $< /dev/null >&2
+	$(TOUCH) $@
+
+
+.PHONY: check-catman-grep
+check-catman-grep: $(_CHECK_catman);
+
+
+endif  # include guard
diff --git a/share/mk/clean.mk b/share/mk/clean.mk
new file mode 100644
index 0000000..a0908fa
--- /dev/null
+++ b/share/mk/clean.mk
@@ -0,0 +1,19 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CLEAN_INCLUDED
+MAKEFILE_CLEAN_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+
+
+.PHONY: clean
+clean:
+	$(info	$(INFO_)RM -rf		$(builddir))
+	$(RM) -rf $(builddir)
+
+
+endif  # include guard
diff --git a/share/mk/cmd.mk b/share/mk/cmd.mk
deleted file mode 100644
index aa7c07c..0000000
--- a/share/mk/cmd.mk
+++ /dev/null
@@ -1,40 +0,0 @@
-########################################################################
-# Copyright 2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_CMD_INCLUDED
-MAKEFILE_CMD_INCLUDED := 1
-
-
-BZIP2      := bzip2
-CP         := cp
-ECHO       := echo
-EXPR       := expr
-FIND       := find
-GIT        := git
-GREP       := grep
-GZIP       := gzip
-HEAD       := head
-INSTALL    := install
-LN         := ln
-LOCALE     := locale
-LZIP       := lzip
-MANDOC     := mandoc
-PKGCONF    := pkgconf
-SED        := sed
-SORT       := sort
-SPONGE     := sponge
-TAC        := tac
-TAIL       := tail
-TAR        := tar
-TEST       := test
-XARGS      := xargs
-XZ         := xz
-
-INSTALL_DATA := $(INSTALL) -m 644
-INSTALL_DIR  := $(INSTALL) -m 755 -d
-
-
-endif  # include guard
diff --git a/share/mk/compress.mk b/share/mk/compress.mk
deleted file mode 100644
index 6502930..0000000
--- a/share/mk/compress.mk
+++ /dev/null
@@ -1,40 +0,0 @@
-########################################################################
-# Copyright 2023 Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_COMPRESS_INCLUDED
-MAKEFILE_COMPRESS_INCLUDED := 1
-
-
-Z :=
-ifeq ($(Z),)
-else ifeq ($(Z),.bz2)
-else ifeq ($(Z),.gz)
-else ifeq ($(Z),.lz)
-else ifeq ($(Z),.xz)
-else
-$(warning "Z": "$(Z)")
-$(error Valid values for "Z": ["", ".bz2", ".gz", ".lz", ".xz"])
-endif
-
-
-DEFAULT_BZIP2FLAGS :=
-EXTRA_BZIP2FLAGS   :=
-BZIP2FLAGS         := $(DEFAULT_BZIP2FLAGS) $(EXTRA_BZIP2FLAGS)
-
-DEFAULT_GZIPFLAGS  :=
-EXTRA_GZIPFLAGS    :=
-GZIPFLAGS          := $(DEFAULT_GZIPFLAGS) $(EXTRA_GZIPFLAGS)
-
-DEFAULT_LZIPFLAGS  :=
-EXTRA_LZIPFLAGS    :=
-LZIPFLAGS          := $(DEFAULT_LZIPFLAGS) $(EXTRA_LZIPFLAGS)
-
-DEFAULT_XZFLAGS    :=
-EXTRA_XZFLAGS      :=
-XZFLAGS            := $(DEFAULT_XZFLAGS) $(EXTRA_XZFLAGS)
-
-
-endif  # include guard
diff --git a/share/mk/configure/build-depends/bsdextrautils.mk b/share/mk/configure/build-depends/bsdextrautils.mk
new file mode 100644
index 0000000..347e4bc
--- /dev/null
+++ b/share/mk/configure/build-depends/bsdextrautils.mk
@@ -0,0 +1,18 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_BSDEXTRAUTILS_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_BSDEXTRAUTILS_INCLUDED := 1
+
+
+DEFAULT_COLFLAGS := \
+	-b \
+	-p \
+	-x
+EXTRA_COLFLAGS   :=
+COLFLAGS         := $(DEFAULT_COLFLAGS) $(EXTRA_COLFLAGS)
+COL              := col
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/bzip2.mk b/share/mk/configure/build-depends/bzip2.mk
new file mode 100644
index 0000000..71e6366
--- /dev/null
+++ b/share/mk/configure/build-depends/bzip2.mk
@@ -0,0 +1,15 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_BZIP2_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_BZIP2_INCLUDED := 1
+
+
+DEFAULT_BZIP2FLAGS :=
+EXTRA_BZIP2FLAGS   :=
+BZIP2FLAGS         := $(DEFAULT_BZIP2FLAGS) $(EXTRA_BZIP2FLAGS)
+BZIP2              := bzip2
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/cc.mk b/share/mk/configure/build-depends/cc.mk
new file mode 100644
index 0000000..85470a4
--- /dev/null
+++ b/share/mk/configure/build-depends/cc.mk
@@ -0,0 +1,63 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CC_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CC_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+
+
+CC := gcc
+
+
+CC_VENDOR := \
+	$(shell \
+		$(CC) -v 2>&1 \
+		| $(SED) -n '1p;$$p' \
+		| $(SED) '/gcc version/s/.*/gcc/' \
+		| $(SED) '/clang version/s/.*/clang/' \
+		| $(SED) '/Apple LLVM version/s/.*/clang/' \
+		| $(GREP) -e '^gcc$$' -e '^clang$$' \
+		|| $(ECHO) unknown; \
+	)
+
+
+COMMON_CFLAGS := \
+	-O3 \
+	-flto \
+	-Wall \
+	-Wextra \
+	-Werror \
+	-Wstrict-prototypes \
+	-Wdeclaration-after-statement \
+	-Wno-error=unused-parameter \
+	-Wno-error=sign-compare \
+	-Wno-error=format \
+	-Wno-error=uninitialized
+
+
+GCC_CFLAGS := -fanalyzer
+
+
+CLANG_CFLAGS := \
+	-Weverything \
+	-Wno-unsafe-buffer-usage
+
+
+DEFAULT_CFLAGS := $(COMMON_CFLAGS)
+
+ifeq ($(CC_VENDOR),gcc)
+DEFAULT_CFLAGS += $(GCC_CFLAGS)
+else ifeq ($(CC_VENDOR),clang)
+DEFAULT_CFLAGS += $(CLANG_CFLAGS)
+endif
+
+EXTRA_CFLAGS   :=
+CFLAGS         := $(DEFAULT_CFLAGS) $(EXTRA_CFLAGS)
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/checkpatch.mk b/share/mk/configure/build-depends/checkpatch.mk
new file mode 100644
index 0000000..0b29d9f
--- /dev/null
+++ b/share/mk/configure/build-depends/checkpatch.mk
@@ -0,0 +1,19 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CHECKPATCH_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CHECKPATCH_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/src.mk
+
+
+CHECKPATCH_CONF         := $(SYSCONFDIR)/checkpatch/checkpatch.conf
+DEFAULT_CHECKPATCHFLAGS :=
+EXTRA_CHECKPATCHFLAGS   :=
+CHECKPATCHFLAGS         := $(DEFAULT_CHECKPATCHFLAGS) $(EXTRA_CHECKPATCHFLAGS)
+CHECKPATCH              := checkpatch
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/clang-tidy.mk b/share/mk/configure/build-depends/clang-tidy.mk
new file mode 100644
index 0000000..2d818f9
--- /dev/null
+++ b/share/mk/configure/build-depends/clang-tidy.mk
@@ -0,0 +1,22 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CLANG_TIDY_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CLANG_TIDY_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/src.mk
+
+
+CLANG_TIDY_CONF         := $(SYSCONFDIR)/clang-tidy/config.yaml
+DEFAULT_CLANG_TIDYFLAGS := \
+	--config-file=$(CLANG_TIDY_CONF) \
+	--quiet \
+	--use-color
+EXTRA_CLANG_TIDYFLAGS   :=
+CLANG_TIDYFLAGS         := $(DEFAULT_CLANG_TIDYFLAGS) $(EXTRA_CLANG_TIDYFLAGS)
+CLANG_TIDY              := clang-tidy
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/clang.mk b/share/mk/configure/build-depends/clang.mk
new file mode 100644
index 0000000..b44ccb5
--- /dev/null
+++ b/share/mk/configure/build-depends/clang.mk
@@ -0,0 +1,19 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CLANG_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CLANG_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/cc.mk
+
+
+DEFAULT_CLANGFLAGS := \
+	$(COMMON_CFLAGS) \
+	$(CLANG_CFLAGS)
+EXTRA_CLANGFLAGS   :=
+CLANGFLAGS         := $(DEFAULT_CLANGFLAGS) $(EXTRA_CLANGFLAGS)
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/coreutils.mk b/share/mk/configure/build-depends/coreutils.mk
new file mode 100644
index 0000000..2fe97fe
--- /dev/null
+++ b/share/mk/configure/build-depends/coreutils.mk
@@ -0,0 +1,32 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_COREUTILS_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_COREUTILS_INCLUDED := 1
+
+
+CAT      := cat
+CP       := cp
+ECHO     := echo
+EXPR     := expr
+HEAD     := head
+INSTALL  := install
+LN       := ln
+MKDIR    := mkdir
+REALPATH := realpath
+RM       := rm
+SORT     := sort
+STAT     := stat
+TAC      := tac
+TAIL     := tail
+TEST     := test
+TOUCH    := touch
+TRUE     := true
+
+
+INSTALL_DATA    := $(INSTALL) -m 644
+INSTALL_DIR     := $(INSTALL) -m 755 -d
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/cpp.mk b/share/mk/configure/build-depends/cpp.mk
new file mode 100644
index 0000000..b720898
--- /dev/null
+++ b/share/mk/configure/build-depends/cpp.mk
@@ -0,0 +1,20 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CPP_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CPP_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/cc.mk
+include $(MAKEFILEDIR)/configure/build-depends/pkgconf.mk
+include $(MAKEFILEDIR)/configure/verbose.mk
+
+
+DEFAULT_CPPFLAGS := $(shell $(PKGCONF_CMD) --cflags $(PKGCONF_LIBS) $(HIDE_ERR))
+EXTRA_CPPFLAGS   :=
+CPPFLAGS         := $(DEFAULT_CPPFLAGS) $(EXTRA_CPPFLAGS)
+CPP              := $(CC) $(CFLAGS) -E
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/cppcheck.mk b/share/mk/configure/build-depends/cppcheck.mk
new file mode 100644
index 0000000..93a9b75
--- /dev/null
+++ b/share/mk/configure/build-depends/cppcheck.mk
@@ -0,0 +1,24 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CPPCHECK_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CPPCHECK_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/src.mk
+
+
+CPPCHECK_SUPPRESS     := $(SYSCONFDIR)/cppcheck/cppcheck.suppress
+DEFAULT_CPPCHECKFLAGS := \
+	--enable=all \
+	--error-exitcode=2 \
+	--inconclusive \
+	--quiet \
+	--suppressions-list=$(CPPCHECK_SUPPRESS)
+EXTRA_CPPCHECKFLAGS   :=
+CPPCHECKFLAGS         := $(DEFAULT_CPPCHECKFLAGS) $(EXTRA_CPPCHECKFLAGS)
+CPPCHECK              := cppcheck
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/cpplint.mk b/share/mk/configure/build-depends/cpplint.mk
new file mode 100644
index 0000000..586d646
--- /dev/null
+++ b/share/mk/configure/build-depends/cpplint.mk
@@ -0,0 +1,19 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_CPPLINT_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_CPPLINT_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/src.mk
+
+
+CPPLINT_CONF         := $(SYSCONFDIR)/cpplint/cpplint.cfg
+DEFAULT_CPPLINTFLAGS :=
+EXTRA_CPPLINTFLAGS   :=
+CPPLINTFLAGS         := $(DEFAULT_CPPLINTFLAGS) $(EXTRA_CPPLINTFLAGS)
+CPPLINT              := cpplint
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/diffoscope.mk b/share/mk/configure/build-depends/diffoscope.mk
new file mode 100644
index 0000000..a9e48b3
--- /dev/null
+++ b/share/mk/configure/build-depends/diffoscope.mk
@@ -0,0 +1,12 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_DIFFOSCOPE_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_DIFFOSCOPE_INCLUDED := 1
+
+
+DIFFOSCOPE := diffoscope
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/findutils.mk b/share/mk/configure/build-depends/findutils.mk
new file mode 100644
index 0000000..536f921
--- /dev/null
+++ b/share/mk/configure/build-depends/findutils.mk
@@ -0,0 +1,13 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_FINDUTILS_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_FINDUTILS_INCLUDED := 1
+
+
+FIND    := find
+XARGS   := xargs
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/git.mk b/share/mk/configure/build-depends/git.mk
new file mode 100644
index 0000000..a861bed
--- /dev/null
+++ b/share/mk/configure/build-depends/git.mk
@@ -0,0 +1,12 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_GIT_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_GIT_INCLUDED := 1
+
+
+GIT := git
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/grep.mk b/share/mk/configure/build-depends/grep.mk
new file mode 100644
index 0000000..7d89691
--- /dev/null
+++ b/share/mk/configure/build-depends/grep.mk
@@ -0,0 +1,12 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_GREP_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_GREP_INCLUDED := 1
+
+
+GREP := grep
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/groff-base.mk b/share/mk/configure/build-depends/groff-base.mk
new file mode 100644
index 0000000..ab1f98d
--- /dev/null
+++ b/share/mk/configure/build-depends/groff-base.mk
@@ -0,0 +1,72 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_GROFF_BASE_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_GROFF_BASE_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/libc-bin.mk
+include $(MAKEFILEDIR)/configure/build-depends/man.mk
+
+
+DEFAULT_PRECONVFLAGS :=
+EXTRA_PRECONVFLAGS   :=
+PRECONVFLAGS         := $(DEFAULT_PRECONVFLAGS) $(EXTRA_PRECONVFLAGS)
+PRECONV              := preconv
+
+
+DEFAULT_PICFLAGS :=
+EXTRA_PICFLAGS   :=
+PICFLAGS         := $(DEFAULT_PICFLAGS) $(EXTRA_PICFLAGS)
+PIC              := pic
+
+
+TBL := tbl
+
+
+DEFAULT_EQNFLAGS :=
+EXTRA_EQNFLAGS   :=
+EQNFLAGS         := $(DEFAULT_EQNFLAGS) $(EXTRA_EQNFLAGS)
+EQN              := eqn
+
+
+DEFAULT_TROFFFLAGS := -wbreak
+EXTRA_TROFFFLAGS   :=
+TROFFFLAGS         := $(DEFAULT_TROFFFLAGS) $(EXTRA_TROFFFLAGS)
+TROFF              := troff
+
+
+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
+
+
+DEFAULT_GROPSFLAGS :=
+EXTRA_GROPSFLAGS   :=
+GROPSFLAGS         := $(DEFAULT_GROPSFLAGS) $(EXTRA_GROPSFLAGS)
+GROPS              := grops
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/groff.mk b/share/mk/configure/build-depends/groff.mk
new file mode 100644
index 0000000..ea0c7a3
--- /dev/null
+++ b/share/mk/configure/build-depends/groff.mk
@@ -0,0 +1,21 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_GROFF_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_GROFF_INCLUDED := 1
+
+
+DEFAULT_GROPDFFLAGS :=
+EXTRA_GROPDFFLAGS   :=
+GROPDFFLAGS         := $(DEFAULT_GROPDFFLAGS) $(EXTRA_GROPDFFLAGS)
+GROPDF              := gropdf
+
+
+DEFAULT_POST_GROHTMLFLAGS :=
+EXTRA_POST_GROHTMLFLAGS   :=
+POST_GROHTMLFLAGS         := $(DEFAULT_POST_GROHTMLFLAGS) $(EXTRA_POST_GROHTMLFLAGS)
+POST_GROHTML              := post-grohtml
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/gzip.mk b/share/mk/configure/build-depends/gzip.mk
new file mode 100644
index 0000000..6633654
--- /dev/null
+++ b/share/mk/configure/build-depends/gzip.mk
@@ -0,0 +1,15 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_GZIP_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_GZIP_INCLUDED := 1
+
+
+DEFAULT_GZIPFLAGS := -n
+EXTRA_GZIPFLAGS   :=
+GZIPFLAGS         := $(DEFAULT_GZIPFLAGS) $(EXTRA_GZIPFLAGS)
+GZIP              := gzip
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/iwyu.mk b/share/mk/configure/build-depends/iwyu.mk
new file mode 100644
index 0000000..bd5cf7f
--- /dev/null
+++ b/share/mk/configure/build-depends/iwyu.mk
@@ -0,0 +1,17 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_IWYU_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_IWYU_INCLUDED := 1
+
+
+DEFAULT_IWYUFLAGS := \
+	-Xiwyu --no_fwd_decls \
+	-Xiwyu --error
+EXTRA_IWYUFLAGS   :=
+IWYUFLAGS         := $(DEFAULT_IWYUFLAGS) $(EXTRA_IWYUFLAGS)
+IWYU              := iwyu
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/ld.mk b/share/mk/configure/build-depends/ld.mk
new file mode 100644
index 0000000..a78a189
--- /dev/null
+++ b/share/mk/configure/build-depends/ld.mk
@@ -0,0 +1,50 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_LD_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_LD_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/cc.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/pkgconf.mk
+include $(MAKEFILEDIR)/configure/verbose.mk
+
+
+LD := $(CC) $(CFLAGS)
+
+
+LD_HAS_FUSE_LINKER_PLUGIN := \
+	$(shell \
+		$(ECHO) 'int main(void) {}' \
+		| $(LD) -fuse-linker-plugin -x c -o /dev/null /dev/stdin $(HIDE_ERR) \
+		&& $(ECHO) yes \
+		|| $(ECHO) no; \
+	)
+
+
+DEFAULT_LDFLAGS := \
+	-Wl,--as-needed \
+	-Wl,--no-allow-shlib-undefined \
+	-Wl,--no-copy-dt-needed-entries \
+	-Wl,--no-undefined \
+	$(shell $(PKGCONF_CMD) --libs-only-L $(PKGCONF_LIBS) $(HIDE_ERR)) \
+	$(shell $(PKGCONF_CMD) --libs-only-other $(PKGCONF_LIBS) $(HIDE_ERR))
+
+ifeq ($(LD_HAS_FUSE_LINKER_PLUGIN),yes)
+DEFAULT_LDFLAGS += -fuse-linker-plugin
+endif
+
+EXTRA_LDFLAGS   :=
+LDFLAGS         := $(DEFAULT_LDFLAGS) $(EXTRA_LDFLAGS)
+
+
+DEFAULT_LDLIBS := \
+	-lc \
+	$(shell $(PKGCONF_CMD) --libs-only-l $(PKGCONF_LIBS) $(HIDE_ERR))
+EXTRA_LDLIBS   :=
+LDLIBS         := $(DEFAULT_LDLIBS) $(EXTRA_LDLIBS)
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/libc-bin.mk b/share/mk/configure/build-depends/libc-bin.mk
new file mode 100644
index 0000000..281502b
--- /dev/null
+++ b/share/mk/configure/build-depends/libc-bin.mk
@@ -0,0 +1,12 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_LIBC_BIN_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_LIBC_BIN_INCLUDED := 1
+
+
+LOCALE := locale
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/lzip.mk b/share/mk/configure/build-depends/lzip.mk
new file mode 100644
index 0000000..e18868f
--- /dev/null
+++ b/share/mk/configure/build-depends/lzip.mk
@@ -0,0 +1,15 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_LZIP_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_LZIP_INCLUDED := 1
+
+
+DEFAULT_LZIPFLAGS :=
+EXTRA_LZIPFLAGS   :=
+LZIPFLAGS         := $(DEFAULT_LZIPFLAGS) $(EXTRA_LZIPFLAGS)
+LZIP              := lzip
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/man.mk b/share/mk/configure/build-depends/man.mk
new file mode 100644
index 0000000..5248d42
--- /dev/null
+++ b/share/mk/configure/build-depends/man.mk
@@ -0,0 +1,12 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_MAN_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_MAN_INCLUDED := 1
+
+
+MANWIDTH ?= 80
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/mandoc.mk b/share/mk/configure/build-depends/mandoc.mk
new file mode 100644
index 0000000..87eccd6
--- /dev/null
+++ b/share/mk/configure/build-depends/mandoc.mk
@@ -0,0 +1,15 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_MANDOC_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_MANDOC_INCLUDED := 1
+
+
+DEFAULT_MANDOCFLAGS := -Tlint
+EXTRA_MANDOCFLAGS   :=
+MANDOCFLAGS         := $(DEFAULT_MANDOCFLAGS) $(EXTRA_MANDOCFLAGS)
+MANDOC              := mandoc
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/moreutils.mk b/share/mk/configure/build-depends/moreutils.mk
new file mode 100644
index 0000000..69b60fa
--- /dev/null
+++ b/share/mk/configure/build-depends/moreutils.mk
@@ -0,0 +1,12 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_MOREUTILS_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_MOREUTILS_INCLUDED := 1
+
+
+SPONGE := sponge
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/pkgconf.mk b/share/mk/configure/build-depends/pkgconf.mk
new file mode 100644
index 0000000..b7b5c3f
--- /dev/null
+++ b/share/mk/configure/build-depends/pkgconf.mk
@@ -0,0 +1,27 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_PKGCONF_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_PKGCONF_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/src.mk
+include $(MAKEFILEDIR)/configure/version.mk
+
+
+# Compat
+PKG_CONFIG := pkgconf
+
+
+DEFAULT_PKGCONFFLAGS :=
+EXTRA_PKGCONFFLAGS   :=
+PKGCONFFLAGS         := $(DEFAULT_PKGCONFFLAGS) $(EXTRA_PKGCONFFLAGS)
+PKGCONF              := $(PKG_CONFIG)
+PKGCONF_CMD          := $(PKGCONF) $(PKGCONFFLAGS)
+
+
+PKGCONF_LIBS := libbsd-overlay
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/sed.mk b/share/mk/configure/build-depends/sed.mk
new file mode 100644
index 0000000..3d1fcd8
--- /dev/null
+++ b/share/mk/configure/build-depends/sed.mk
@@ -0,0 +1,12 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_SED_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_SED_INCLUDED := 1
+
+
+SED := sed
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/tar.mk b/share/mk/configure/build-depends/tar.mk
new file mode 100644
index 0000000..3ea5537
--- /dev/null
+++ b/share/mk/configure/build-depends/tar.mk
@@ -0,0 +1,22 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_TAR_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_TAR_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/version.mk
+
+
+DEFAULT_TARFLAGS := \
+	--sort=name \
+	--owner=root:0 \
+	--group=root:0 \
+	--mtime='$(DISTDATE)'
+EXTRA_TARFLAGS   :=
+TARFLAGS         := $(DEFAULT_TARFLAGS) $(EXTRA_TARFLAGS)
+TAR              := tar
+
+
+endif  # include guard
diff --git a/share/mk/configure/build-depends/xz-utils.mk b/share/mk/configure/build-depends/xz-utils.mk
new file mode 100644
index 0000000..d00a3b7
--- /dev/null
+++ b/share/mk/configure/build-depends/xz-utils.mk
@@ -0,0 +1,15 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_BUILD_DEPENDS_XZ_UTILS_INCLUDED
+MAKEFILE_CONFIGURE_BUILD_DEPENDS_XZ_UTILS_INCLUDED := 1
+
+
+DEFAULT_XZFLAGS :=
+EXTRA_XZFLAGS   :=
+XZFLAGS         := $(DEFAULT_XZFLAGS) $(EXTRA_XZFLAGS)
+XZ              := xz
+
+
+endif  # include guard
diff --git a/share/mk/configure/directory_variables.mk b/share/mk/configure/directory_variables.mk
new file mode 100644
index 0000000..e4ee616
--- /dev/null
+++ b/share/mk/configure/directory_variables.mk
@@ -0,0 +1,29 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_DIRECTORY_VARIABLES_INCLUDED
+MAKEFILE_CONFIGURE_DIRECTORY_VARIABLES_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/src.mk
+
+
+builddir := .tmp
+
+
+DESTDIR     :=
+prefix      := /usr/local
+datarootdir := $(prefix)/share
+docdir      := $(datarootdir)/doc
+htmldir     := $(docdir)/html/man
+mandir      := $(datarootdir)/man
+
+
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval man$(s)dir := $(mandir)/man$(s)))
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval man$(s)ext := .$(s)))
+
+
+endif  # include guard
diff --git a/share/mk/configure/link_pages.mk b/share/mk/configure/link_pages.mk
new file mode 100644
index 0000000..52136ef
--- /dev/null
+++ b/share/mk/configure/link_pages.mk
@@ -0,0 +1,18 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_LINK_PAGES_INCLUDED
+MAKEFILE_CONFIGURE_LINK_PAGES_INCLUDED := 1
+
+
+LINK_PAGES := .so
+ifeq ($(LINK_PAGES),.so)
+else ifeq ($(LINK_PAGES),symlink)
+else
+$(warning "LINK_PAGES": "$(LINK_PAGES)")
+$(error Valid values for "LINK_PAGES": [".so", "symlink"])
+endif
+
+
+endif  # include guard
diff --git a/share/mk/configure/src.mk b/share/mk/configure/src.mk
new file mode 100644
index 0000000..2a24f4e
--- /dev/null
+++ b/share/mk/configure/src.mk
@@ -0,0 +1,16 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_SRC_INCLUDED
+MAKEFILE_CONFIGURE_SRC_INCLUDED := 1
+
+
+SYSCONFDIR := $(srcdir)/etc
+MANDIR     := $(srcdir)
+
+
+MANSECTIONS := $(patsubst $(MANDIR)/man%/, %, $(wildcard $(MANDIR)/man*/))
+
+
+endif  # include guard
diff --git a/share/mk/configure/verbose.mk b/share/mk/configure/verbose.mk
new file mode 100644
index 0000000..d6372db
--- /dev/null
+++ b/share/mk/configure/verbose.mk
@@ -0,0 +1,12 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_VERBOSE_INCLUDED
+MAKEFILE_CONFIGURE_VERBOSE_INCLUDED := 1
+
+
+HIDE_ERR := 2>/dev/null
+
+
+endif  # include guard
diff --git a/share/mk/configure/version.mk b/share/mk/configure/version.mk
new file mode 100644
index 0000000..cc89bae
--- /dev/null
+++ b/share/mk/configure/version.mk
@@ -0,0 +1,43 @@
+# Copyright 2022-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_VERSION_INCLUDED
+MAKEFILE_CONFIGURE_VERSION_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/findutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/git.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/verbose.mk
+
+
+DISTNAME := man-pages-6.7
+DISTVERSION := 6.7
+
+
+DISTFILESCMD := \
+	$(FIND) $(srcdir) -not -type d \
+	| $(GREP) -v '^$(srcdir)/.git$$' \
+	| $(GREP) -v '^$(srcdir)/.git/' \
+	| $(GREP) -v '^$(srcdir)/.tmp/' \
+	| $(GREP) -v '^$(srcdir)/.checkpatch-camelcase.' \
+	| $(SORT)
+
+DISTDATECMD := \
+	$(ECHO) '$(DISTVERSION)' \
+	| if $(GREP) -- '-dirty$$' >/dev/null; then \
+		$(DISTFILESCMD) \
+		| $(XARGS) $(STAT) -c %y \
+		| $(SORT) -n \
+		| $(TAIL) -n1; \
+	else \
+		$(GIT) log -1 --format='%cD'; \
+	fi;
+
+
+DISTDATE := Tue, 19 Mar 2024 19:07:13 +0100
+
+
+endif  # include guard
diff --git a/share/mk/configure/xfail.mk b/share/mk/configure/xfail.mk
new file mode 100644
index 0000000..44e4ede
--- /dev/null
+++ b/share/mk/configure/xfail.mk
@@ -0,0 +1,18 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_XFAIL_INCLUDED
+MAKEFILE_CONFIGURE_XFAIL_INCLUDED := 1
+
+
+SKIP_XFAIL := yes
+ifeq ($(SKIP_XFAIL),yes)
+else ifeq ($(SKIP_XFAIL),no)
+else
+$(warning "SKIP_XFAIL": "$(SKIP_XFAIL)")
+$(error Valid values for "SKIP_XFAIL": ["yes", "no"])
+endif
+
+
+endif  # include guard
diff --git a/share/mk/configure/z.mk b/share/mk/configure/z.mk
new file mode 100644
index 0000000..2eec437
--- /dev/null
+++ b/share/mk/configure/z.mk
@@ -0,0 +1,21 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_CONFIGURE_Z_INCLUDED
+MAKEFILE_CONFIGURE_Z_INCLUDED := 1
+
+
+Z :=
+ifeq ($(Z),)
+else ifeq ($(Z),.bz2)
+else ifeq ($(Z),.gz)
+else ifeq ($(Z),.lz)
+else ifeq ($(Z),.xz)
+else
+$(warning "Z": "$(Z)")
+$(error Valid values for "Z": ["", ".bz2", ".gz", ".lz", ".xz"])
+endif
+
+
+endif  # include guard
diff --git a/share/mk/dist.mk b/share/mk/dist.mk
deleted file mode 100644
index b18197d..0000000
--- a/share/mk/dist.mk
+++ /dev/null
@@ -1,96 +0,0 @@
-########################################################################
-# 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: % | $$(@D)/
-	$(info XZ	$@)
-	$(XZ) $(XZFLAGS) -kf $<
-
-
-.PHONY: dist-tar
-dist-tar: $(DISTFILE);
-
-.PHONY: $(dist)
-$(dist): dist-%: $(DISTFILE).%;
-
-.PHONY: dist
-dist: $(dist);
-
-
-endif  # include guard
diff --git a/share/mk/dist/_.mk b/share/mk/dist/_.mk
new file mode 100644
index 0000000..f6d8669
--- /dev/null
+++ b/share/mk/dist/_.mk
@@ -0,0 +1,25 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_INCLUDED
+MAKEFILE_DIST_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+
+
+_DISTDIR := $(builddir)/dist
+
+
+$(builddir)/dist/%/:
+	+$(info	$(INFO_)MKDIR		$@)
+	+$(INSTALL_DIR) $@
+
+
+.PHONY: dist
+dist: dist-tar dist-z;
+
+
+endif  # include guard
diff --git a/share/mk/dist/check/_.mk b/share/mk/dist/check/_.mk
new file mode 100644
index 0000000..a24b8f8
--- /dev/null
+++ b/share/mk/dist/check/_.mk
@@ -0,0 +1,41 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_CHECK_INCLUDED
+MAKEFILE_DIST_CHECK_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+include $(MAKEFILEDIR)/configure/version.mk
+
+
+_DISTCHECKDIR      := $(shell $(REALPATH) -m $(builddir)/distcheck)
+_DISTCHECKSRCDIR   := $(_DISTCHECKDIR)/$(DISTNAME)
+_DISTCHECKBUILDDIR := $(_DISTCHECKDIR)/$(DISTNAME)_builddir
+_DISTCHECKDESTDIR  := $(_DISTCHECKDIR)/$(DISTNAME)_destdir
+_DISTCHECK_MANDIR  := $(_DISTCHECKBUILDDIR)/man
+
+
+_MAKE_OPTS = \
+	-C $< \
+	'builddir=$(_DISTCHECKBUILDDIR)' \
+	'DESTDIR=$(_DISTCHECKDESTDIR)'
+
+
+distcheck-%: $(_DISTCHECKSRCDIR) $(MK) | $$(@D)/
+	$(info	$(INFO_)MAKE		$@)
+	$(MAKE) $(_MAKE_OPTS) $* \
+		'INFO_= $*:	'
+
+
+.PHONY: distcheck
+distcheck: distcheck-diffoscope
+distcheck: $(_DISTCHECKSRCDIR) $(MK)
+	$(info	$(INFO_)MAKE		lint build check install dist)
+	$(MAKE) $(_MAKE_OPTS) lint build check install dist \
+		'INFO_= distcheck:	'
+
+
+endif  # include guard
diff --git a/share/mk/dist/check/diffoscope.mk b/share/mk/dist/check/diffoscope.mk
new file mode 100644
index 0000000..33bcf30
--- /dev/null
+++ b/share/mk/dist/check/diffoscope.mk
@@ -0,0 +1,26 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_CHECK_DIFFOSCOPE_INCLUDED
+MAKEFILE_DIST_CHECK_DIFFOSCOPE_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/diffoscope.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+include $(MAKEFILEDIR)/dist/check/dist.mk
+include $(MAKEFILEDIR)/dist/tar.mk
+
+
+$(builddir)/distcheck.diffoscope.touch: $(_DISTFILE) $(REDIST) | $$(@D)/
+	$(info	$(INFO_)DIFFOSCOPE	$^)
+	$(DIFFOSCOPE) $^
+	$(TOUCH) $@
+
+
+.PHONY: distcheck-diffoscope
+distcheck-diffoscope: $(builddir)/distcheck.diffoscope.touch;
+
+
+endif  # include guard
diff --git a/share/mk/dist/check/dist.mk b/share/mk/dist/check/dist.mk
new file mode 100644
index 0000000..ecd565b
--- /dev/null
+++ b/share/mk/dist/check/dist.mk
@@ -0,0 +1,28 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_CHECK_DIST_INCLUDED
+MAKEFILE_DIST_CHECK_DIST_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/version.mk
+include $(MAKEFILEDIR)/dist/check/_.mk
+include $(MAKEFILEDIR)/dist/check/tar.mk
+
+
+REDIST := $(_DISTCHECKBUILDDIR)/$(DISTNAME).tar
+
+
+$(REDIST): $(_DISTCHECKSRCDIR) $(MK) | $$(@D)/
+	$(info	$(INFO_)MAKE		dist-tar)
+	$(MAKE) $(_MAKE_OPTS) dist-tar \
+		'INFO_= dist-tar:	'
+
+
+.PHONY: distcheck-dist-tar
+distcheck-dist-tar: $(REDIST);
+
+
+endif  # include guard
diff --git a/share/mk/dist/check/tar.mk b/share/mk/dist/check/tar.mk
new file mode 100644
index 0000000..bd28ce5
--- /dev/null
+++ b/share/mk/dist/check/tar.mk
@@ -0,0 +1,32 @@
+# Copyright 2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_CHECK_TAR_INCLUDED
+MAKEFILE_DIST_CHECK_TAR_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/tar.mk
+include $(MAKEFILEDIR)/configure/version.mk
+include $(MAKEFILEDIR)/dist/check/_.mk
+include $(MAKEFILEDIR)/dist/tar.mk
+
+
+$(_DISTCHECKDIR)/$(DISTFILE): $(_DISTFILE) $(MK) | $$(@D)/
+	$(info	$(INFO_)CP		$@)
+	$(CP) -T $< $@
+
+$(_DISTCHECKSRCDIR): %: %.tar $(MK) | $$(@D)/
+	$(info	$(INFO_)TAR xf		$<)
+	$(RM) -rf $@
+	cd $(dir $<) \
+	&& $(TAR) xf $(notdir $<)
+	$(TOUCH) $@
+
+
+.PHONY: distcheck-tar
+distcheck-tar: $(_DISTCHECKSRCDIR);
+
+
+endif  # include guard
diff --git a/share/mk/dist/files.mk b/share/mk/dist/files.mk
new file mode 100644
index 0000000..bc3f7ff
--- /dev/null
+++ b/share/mk/dist/files.mk
@@ -0,0 +1,62 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_FILES_INCLUDED
+MAKEFILE_DIST_FILES_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/git.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/verbose.mk
+include $(MAKEFILEDIR)/configure/version.mk
+include $(MAKEFILEDIR)/dist/_.mk
+
+
+DISTFILES    := $(shell $(DISTFILESCMD) | $(SED) 's,:,\\:,g')
+_DISTFILES   := $(patsubst $(srcdir)/%,$(_DISTDIR)/%,$(DISTFILES))
+_DISTPAGES   := $(filter $(_DISTDIR)/man%,$(_DISTFILES))
+_DISTVERSION := $(_DISTDIR)/share/mk/configure/version.mk
+_DISTOTHERS  := $(filter-out $(_DISTPAGES) $(_DISTVERSION), $(_DISTFILES))
+
+
+FORCE_DISTVERSION := \
+	$(shell \
+		if $(TEST) -f $(_DISTVERSION); then \
+			<$(_DISTVERSION) \
+			$(GREP) \
+				-e '^DISTVERSION :=' \
+				-e '^DISTNAME :=' \
+				-e '^DISTDATE :=' \
+			| $(SED) '/^DISTVERSION := $(DISTVERSION)$$/d' \
+			| $(SED) '/^DISTNAME := $(DISTNAME)$$/d' \
+			| $(SED) '/^DISTDATE := $(DISTDATE)$$/d' \
+			| $(GREP) ^ $(HIDE_ERR) >&2 \
+			&& $(ECHO) FORCE; \
+		fi; \
+	)
+
+
+$(_DISTPAGES): $(_DISTDIR)/man%: $(srcdir)/man% $(MK) | $$(@D)/
+	$(info	$(INFO_)SED		$@)
+	<$< \
+	$(SED) "/^.TH/s/(date)/$$($(GIT) log --format=%cs -1 -- $< $(HIDE_ERR))/" \
+	| $(SED) '/^.TH/s/(unreleased)/$(DISTVERSION)/' \
+	| $(INSTALL_DATA) -T /dev/stdin $@
+
+$(_DISTVERSION): $(MAKEFILEDIR)/configure/version.mk $(MK) $(FORCE_DISTVERSION) | $$(@D)/
+	$(info	$(INFO_)SED		$@)
+	<$< \
+	$(SED) 's/^DISTVERSION *:=.*/DISTVERSION := $(DISTVERSION)/' \
+	| $(SED) 's/^DISTNAME *:=.*/DISTNAME := $(DISTNAME)/' \
+	| $(SED) 's/^DISTDATE *:=.*/DISTDATE := $(DISTDATE)/' \
+	| $(INSTALL_DATA) -T /dev/stdin $@
+
+$(_DISTOTHERS): $(_DISTDIR)/%: $(srcdir)/% $(MK) | $$(@D)/
+	$(info	$(INFO_)CP		$@)
+	$(CP) -dT $< $@
+
+
+endif  # include guard
diff --git a/share/mk/dist/tar.mk b/share/mk/dist/tar.mk
new file mode 100644
index 0000000..a87557f
--- /dev/null
+++ b/share/mk/dist/tar.mk
@@ -0,0 +1,37 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_TAR_INCLUDED
+MAKEFILE_DIST_TAR_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/findutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/git.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/build-depends/tar.mk
+include $(MAKEFILEDIR)/configure/version.mk
+include $(MAKEFILEDIR)/dist/_.mk
+include $(MAKEFILEDIR)/dist/files.mk
+
+
+DISTFILE  := $(DISTNAME).tar
+_DISTFILE := $(builddir)/$(DISTFILE)
+
+
+$(_DISTFILE): $(_DISTFILES) $(MK) | $$(@D)/
+	$(info	$(INFO_)TAR		$@)
+	$(TAR) $(TARFLAGS) -cf $@ -T /dev/null
+	$(DISTFILESCMD) \
+	| $(SED) 's,^$(srcdir)/,$(_DISTDIR)/,' \
+	| $(SORT) \
+	| $(XARGS) $(TAR) $(TARFLAGS) -rf $@ -C $(srcdir) \
+		--transform 's,^$(patsubst /%,%,$(_DISTDIR)),$(DISTNAME),'
+
+
+.PHONY: dist-tar
+dist-tar: $(_DISTFILE);
+
+
+endif  # include guard
diff --git a/share/mk/dist/z.mk b/share/mk/dist/z.mk
new file mode 100644
index 0000000..b4b34fc
--- /dev/null
+++ b/share/mk/dist/z.mk
@@ -0,0 +1,44 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_DIST_Z_INCLUDED
+MAKEFILE_DIST_Z_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/configure/build-depends/bzip2.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/gzip.mk
+include $(MAKEFILEDIR)/configure/build-depends/lzip.mk
+include $(MAKEFILEDIR)/configure/build-depends/xz-utils.mk
+include $(MAKEFILEDIR)/dist/tar.mk
+
+
+compression := bz2 gz lz xz
+
+
+define _DISTFILE_z_rule
+$(_DISTFILE).$(2): %.$(2): % $(MK) | $$$$(@D)/
+	$$(info	$(INFO_)$(1)		$$@)
+	$($(1)) $($(1)FLAGS) -kf $$<
+	$(TOUCH) $$@
+endef
+
+
+$(eval $(call _DISTFILE_z_rule,BZIP2,bz2))
+$(eval $(call _DISTFILE_z_rule,GZIP,gz))
+$(eval $(call _DISTFILE_z_rule,LZIP,lz))
+$(eval $(call _DISTFILE_z_rule,XZ,xz))
+
+
+$(foreach z, $(compression),                                                  \
+	$(eval .PHONY: dist-z-$(z)))
+$(foreach z, $(compression),                                                  \
+	$(eval dist-z-$(z): $(_DISTFILE).$(z);))
+
+
+.PHONY: dist-z
+dist-z: $(foreach z, $(compression), dist-z-$(z));
+
+
+endif  # include guard
diff --git a/share/mk/install/_.mk b/share/mk/install/_.mk
index 751ab97..bb39de3 100644
--- a/share/mk/install/_.mk
+++ b/share/mk/install/_.mk
@@ -1,29 +1,20 @@
-########################################################################
-# Copyright 2021-2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_INSTALL_INCLUDED
 MAKEFILE_INSTALL_INCLUDED := 1
 
 
-include $(MAKEFILEDIR)/cmd.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
 
 
-DESTDIR :=
-prefix  := /usr/local
-
-datarootdir := $(prefix)/share
-docdir      := $(datarootdir)/doc
-
-
-$(DESTDIR)%/:
-	+$(info INSTALL	$@)
+%/:
+	+$(info	$(INFO_)MKDIR		$@)
 	+$(INSTALL_DIR) $@
 
 %-rm:
-	$(info RM	$*)
+	$(info	$(INFO_)RM		$*)
 	$(RM) $*
 
 
diff --git a/share/mk/install/html.mk b/share/mk/install/html.mk
index 97e00ce..047df90 100644
--- a/share/mk/install/html.mk
+++ b/share/mk/install/html.mk
@@ -1,28 +1,27 @@
-########################################################################
-# Copyright 2021-2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_INSTALL_HTML_INCLUDED
 MAKEFILE_INSTALL_HTML_INCLUDED := 1
 
 
-include $(MAKEFILEDIR)/build/html.mk
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/html/post-grohtml.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
 include $(MAKEFILEDIR)/install/_.mk
 
 
-htmldir  := $(docdir)
-htmldir_ := $(htmldir)/man
-_htmldir := $(DESTDIR)$(htmldir_)
+_htmldir := $(DESTDIR)$(htmldir)
 
 
-_htmlpages      := $(patsubst $(_HTMLDIR)/%,$(_htmldir)/%,$(_HTMLPAGES))
+_htmlpages      := $(patsubst $(_MANDIR)/%,$(_htmldir)/%,$(_HTMLMAN))
 _htmlpages_rm   := $(addsuffix -rm,$(wildcard $(_htmlpages)))
 
 
-$(_htmlpages): $(_htmldir)/%: $(_HTMLDIR)/% | $$(@D)/
-	$(info INSTALL	$@)
+$(_htmlpages): $(_htmldir)/%: $(_MANDIR)/% $(MK) | $$(@D)/
+	$(info	$(INFO_)INSTALL		$@)
 	$(INSTALL_DATA) -T $< $@
 
 
diff --git a/share/mk/install/man.mk b/share/mk/install/man.mk
index a135788..65c1ea5 100644
--- a/share/mk/install/man.mk
+++ b/share/mk/install/man.mk
@@ -1,139 +1,60 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_INSTALL_MAN_INCLUDED
 MAKEFILE_INSTALL_MAN_INCLUDED := 1
 
 
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/compress.mk
+include $(MAKEFILEDIR)/configure/build-depends/bzip2.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/findutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/gzip.mk
+include $(MAKEFILEDIR)/configure/build-depends/lzip.mk
+include $(MAKEFILEDIR)/configure/build-depends/moreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/build-depends/xz-utils.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+include $(MAKEFILEDIR)/configure/z.mk
 include $(MAKEFILEDIR)/install/_.mk
 include $(MAKEFILEDIR)/src.mk
 
 
-LINK_PAGES := .so
-ifeq ($(LINK_PAGES),.so)
-else ifeq ($(LINK_PAGES),symlink)
-else
-$(warning "LINK_PAGES": "$(LINK_PAGES)")
-$(error Valid values for "LINK_PAGES": [".so", "symlink"])
-endif
+_mandir := $(DESTDIR)$(mandir)
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval _man$(s)dir := $(DESTDIR)$(man$(s)dir)))
+
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval _man$(s)pages :=                                               \
+		$(patsubst $(MAN$(s)DIR)/%.$(s), $(_man$(s)dir)/%$(man$(s)ext)$(Z), \
+			$(MAN$(s)PAGES))))
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval _man$(s)intropage :=                                           \
+		$(patsubst $(MAN$(s)DIR)/%.$(s), $(_man$(s)dir)/%$(man$(s)ext)$(Z), \
+			$(MAN$(s)INTROPAGE))))
+_manintropages := $(foreach s, $(MANSECTIONS), $(_man$(s)intropage))
+_manpages := $(_manintropages) $(foreach s, $(MANSECTIONS), $(_man$(s)pages))
+
+_manintropages_rm := $(addsuffix -rm, $(wildcard $(_manintropages)))
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval _man$(s)pages_rm :=                                            \
+		$(addsuffix -rm,                                              \
+			$(wildcard $(_man$(s)pages)))))
 
 
-mandir      := $(datarootdir)/man
-man1dir     := $(mandir)/man1
-man2dir     := $(mandir)/man2
-man2typedir := $(mandir)/man2type
-man3dir     := $(mandir)/man3
-man3constdir:= $(mandir)/man3const
-man3headdir := $(mandir)/man3head
-man3typedir := $(mandir)/man3type
-man4dir     := $(mandir)/man4
-man5dir     := $(mandir)/man5
-man6dir     := $(mandir)/man6
-man7dir     := $(mandir)/man7
-man8dir     := $(mandir)/man8
-man1ext     := .1$(Z)
-man2ext     := .2$(Z)
-man2typeext := .2type$(Z)
-man3ext     := .3$(Z)
-man3constext:= .3const$(Z)
-man3headext := .3head$(Z)
-man3typeext := .3type$(Z)
-man4ext     := .4$(Z)
-man5ext     := .5$(Z)
-man6ext     := .6$(Z)
-man7ext     := .7$(Z)
-man8ext     := .8$(Z)
-
-
-_mandir       := $(DESTDIR)$(mandir)
-_man1dir      := $(DESTDIR)$(man1dir)
-_man2dir      := $(DESTDIR)$(man2dir)
-_man2typedir  := $(DESTDIR)$(man2typedir)
-_man3dir      := $(DESTDIR)$(man3dir)
-_man3constdir := $(DESTDIR)$(man3constdir)
-_man3headdir  := $(DESTDIR)$(man3headdir)
-_man3typedir  := $(DESTDIR)$(man3typedir)
-_man4dir      := $(DESTDIR)$(man4dir)
-_man5dir      := $(DESTDIR)$(man5dir)
-_man6dir      := $(DESTDIR)$(man6dir)
-_man7dir      := $(DESTDIR)$(man7dir)
-_man8dir      := $(DESTDIR)$(man8dir)
-
-_man1pages      := $(patsubst $(MANDIR)/man1/%,$(_man1dir)/%$(Z),$(MAN1PAGES))
-_man2pages      := $(patsubst $(MANDIR)/man2/%,$(_man2dir)/%$(Z),$(MAN2PAGES))
-_man2typepages  := $(patsubst $(MANDIR)/man2type/%,$(_man2typedir)/%$(Z),$(MAN2TYPEPAGES))
-_man3pages      := $(patsubst $(MANDIR)/man3/%,$(_man3dir)/%$(Z),$(MAN3PAGES))
-_man3constpages := $(patsubst $(MANDIR)/man3const/%,$(_man3constdir)/%$(Z),$(MAN3CONSTPAGES))
-_man3headpages  := $(patsubst $(MANDIR)/man3head/%,$(_man3headdir)/%$(Z),$(MAN3HEADPAGES))
-_man3typepages  := $(patsubst $(MANDIR)/man3type/%,$(_man3typedir)/%$(Z),$(MAN3TYPEPAGES))
-_man4pages      := $(patsubst $(MANDIR)/man4/%,$(_man4dir)/%$(Z),$(MAN4PAGES))
-_man5pages      := $(patsubst $(MANDIR)/man5/%,$(_man5dir)/%$(Z),$(MAN5PAGES))
-_man6pages      := $(patsubst $(MANDIR)/man6/%,$(_man6dir)/%$(Z),$(MAN6PAGES))
-_man7pages      := $(patsubst $(MANDIR)/man7/%,$(_man7dir)/%$(Z),$(MAN7PAGES))
-_man8pages      := $(patsubst $(MANDIR)/man8/%,$(_man8dir)/%$(Z),$(MAN8PAGES))
-_manpages       := $(_man1pages) \
-                   $(_man2pages) $(_man2typepages) \
-                   $(_man3pages) $(_man3constpages) $(_man3headpages) $(_man3typepages) \
-                   $(_man4pages) \
-                   $(_man5pages) \
-                   $(_man6pages) \
-                   $(_man7pages) \
-                   $(_man8pages)
-
-_man1pages_rm     := $(addsuffix -rm,$(wildcard $(_man1pages)))
-_man2pages_rm     := $(addsuffix -rm,$(wildcard $(_man2pages)))
-_man2typepages_rm := $(addsuffix -rm,$(wildcard $(_man2typepages)))
-_man3pages_rm     := $(addsuffix -rm,$(wildcard $(_man3pages)))
-_man3constpages_rm:= $(addsuffix -rm,$(wildcard $(_man3constpages)))
-_man3headpages_rm := $(addsuffix -rm,$(wildcard $(_man3headpages)))
-_man3typepages_rm := $(addsuffix -rm,$(wildcard $(_man3typepages)))
-_man4pages_rm     := $(addsuffix -rm,$(wildcard $(_man4pages)))
-_man5pages_rm     := $(addsuffix -rm,$(wildcard $(_man5pages)))
-_man6pages_rm     := $(addsuffix -rm,$(wildcard $(_man6pages)))
-_man7pages_rm     := $(addsuffix -rm,$(wildcard $(_man7pages)))
-_man8pages_rm     := $(addsuffix -rm,$(wildcard $(_man8pages)))
-
-MAN_SECTIONS     := 1 2 2type 3 3const 3head 3type 4 5 6 7 8
-install_manX     := $(foreach x,$(MAN_SECTIONS),install-man$(x))
-uninstall_manX   := $(foreach x,$(MAN_SECTIONS),uninstall-man$(x))
-
-
-$(_man1pages):      $(_man1dir)/%$(Z):      $(MANDIR)/man1/%      | $$(@D)/
-$(_man2pages):      $(_man2dir)/%$(Z):      $(MANDIR)/man2/%      | $$(@D)/
-$(_man2typepages):  $(_man2typedir)/%$(Z):  $(MANDIR)/man2type/%  | $$(@D)/
-$(_man3pages):      $(_man3dir)/%$(Z):      $(MANDIR)/man3/%      | $$(@D)/
-$(_man3constpages): $(_man3constdir)/%$(Z): $(MANDIR)/man3const/% | $$(@D)/
-$(_man3headpages):  $(_man3headdir)/%$(Z):  $(MANDIR)/man3head/%  | $$(@D)/
-$(_man3typepages):  $(_man3typedir)/%$(Z):  $(MANDIR)/man3type/%  | $$(@D)/
-$(_man4pages):      $(_man4dir)/%$(Z):      $(MANDIR)/man4/%      | $$(@D)/
-$(_man5pages):      $(_man5dir)/%$(Z):      $(MANDIR)/man5/%      | $$(@D)/
-$(_man6pages):      $(_man6dir)/%$(Z):      $(MANDIR)/man6/%      | $$(@D)/
-$(_man7pages):      $(_man7dir)/%$(Z):      $(MANDIR)/man7/%      | $$(@D)/
-$(_man8pages):      $(_man8dir)/%$(Z):      $(MANDIR)/man8/%      | $$(@D)/
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval $(_man$(s)pages) $(_man$(s)intropage):                         \
+		$(_man$(s)dir)/%$(man$(s)ext)$(Z):                            \
+			$(MAN$(s)DIR)/%.$(s) $(MK) | $$$$(@D)/))
 
 
 $(_manpages):
-	$(info INSTALL	$@)
-	$(INSTALL_DATA) -T $< $@
-	$(SED) -i \
-		-e '/^\.so /s, man1/\(.*\)\.1$$, $(notdir $(man1dir))/\1$(man1ext),' \
-		-e '/^\.so /s, man2/\(.*\)\.2$$, $(notdir $(man2dir))/\1$(man2ext),' \
-		-e '/^\.so /s, man2type/\(.*\)\.2type$$, $(notdir $(man2typedir))/\1$(man2typeext),' \
-		-e '/^\.so /s, man3/\(.*\)\.3$$, $(notdir $(man3dir))/\1$(man3ext),' \
-		-e '/^\.so /s, man3const/\(.*\)\.3const$$, $(notdir $(man3constdir))/\1$(man3constext),' \
-		-e '/^\.so /s, man3head/\(.*\)\.3head$$, $(notdir $(man3headdir))/\1$(man3headext),' \
-		-e '/^\.so /s, man3type/\(.*\)\.3type$$, $(notdir $(man3typedir))/\1$(man3typeext),' \
-		-e '/^\.so /s, man4/\(.*\)\.4$$, $(notdir $(man4dir))/\1$(man4ext),' \
-		-e '/^\.so /s, man5/\(.*\)\.5$$, $(notdir $(man5dir))/\1$(man5ext),' \
-		-e '/^\.so /s, man6/\(.*\)\.6$$, $(notdir $(man6dir))/\1$(man6ext),' \
-		-e '/^\.so /s, man7/\(.*\)\.7$$, $(notdir $(man7dir))/\1$(man7ext),' \
-		-e '/^\.so /s, man8/\(.*\)\.8$$, $(notdir $(man8dir))/\1$(man8ext),' \
-		$@
+	$(info	$(INFO_)INSTALL		$@)
+	<$< \
+	$(SED) $(foreach s, $(MANSECTIONS), \
+		-e '/^\.so /s, man$(s)/\(.*\)\.$(s)$$, $(notdir $(man$(s)dir))/\1$(man$(s)ext)$(Z),') \
+	| $(INSTALL_DATA) -T /dev/stdin $@
 ifeq ($(LINK_PAGES),symlink)
 	if $(GREP) '^\.so ' <$@ >/dev/null; then \
 		$(GREP) '^\.so ' <$@ \
@@ -148,55 +69,39 @@ ifeq ($(Z),.bz2)
 	fi
 else ifeq ($(Z),.gz)
 	if ! $(TEST) -L $@; then \
-		$(GZIP) $(GZIPFLAGS) - <$@ \
+		$(GZIP) $(GZIPFLAGS) <$@ \
 		| $(SPONGE) $@; \
 	fi
 else ifeq ($(Z),.lz)
 	if ! $(TEST) -L $@; then \
-		$(LZIP) $(LZIPFLAGS) - <$@ \
+		$(LZIP) $(LZIPFLAGS) <$@ \
 		| $(SPONGE) $@; \
 	fi
 else ifeq ($(Z),.xz)
 	if ! $(TEST) -L $@; then \
-		$(XZ) $(XZFLAGS) - <$@ \
+		$(XZ) $(XZFLAGS) <$@ \
 		| $(SPONGE) $@; \
 	fi
 endif
 
 
-.PHONY: install-man1
-install-man1:      $(_man1pages);
-.PHONY: install-man2
-install-man2:      $(_man2pages);
-.PHONY: install-man2type
-install-man2type:  $(_man2typepages);
-.PHONY: install-man3
-install-man3:      $(_man3pages);
-.PHONY: install-man3const
-install-man3const: $(_man3constpages);
-.PHONY: install-man3head
-install-man3head:  $(_man3headpages);
-.PHONY: install-man3type
-install-man3type:  $(_man3typepages);
-.PHONY: install-man4
-install-man4:      $(_man4pages);
-.PHONY: install-man5
-install-man5:      $(_man5pages);
-.PHONY: install-man6
-install-man6:      $(_man6pages);
-.PHONY: install-man7
-install-man7:      $(_man7pages);
-.PHONY: install-man8
-install-man8:      $(_man8pages);
-
+.PHONY: install-manintro
+install-manintro:  $(_manintropages);
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval .PHONY: install-man$(s)))
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval install-man$(s): $(_man$(s)pages);))
 .PHONY: install-man
-install-man: $(install_manX);
-
-.PHONY: $(uninstall_manX)
-$(uninstall_manX): uninstall-man%: $$(_man%pages_rm);
-
+install-man: install-manintro $(foreach s, $(MANSECTIONS), install-man$(s));
+
+.PHONY: uninstall-manintro
+uninstall-manintro: $(_manintropages_rm);
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval .PHONY: uninstall-man$(s)))
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval uninstall-man$(s): $(_man$(s)pages_rm);))
 .PHONY: uninstall-man
-uninstall-man: $(uninstall_manX);
+uninstall-man: uninstall-manintro $(foreach s, $(MANSECTIONS), uninstall-man$(s));
 
 
 endif  # include guard
diff --git a/share/mk/lint/_.mk b/share/mk/lint/_.mk
index 9d93bd3..48d02fa 100644
--- a/share/mk/lint/_.mk
+++ b/share/mk/lint/_.mk
@@ -1,18 +1,13 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_LINT_INCLUDED
 MAKEFILE_LINT_INCLUDED := 1
 
 
-lint := lint-c lint-man lint-mdoc
-
-
 .PHONY: lint
-lint: $(lint);
+lint: lint-c lint-man lint-mdoc;
 
 
 endif  # include guard
diff --git a/share/mk/lint/c.mk b/share/mk/lint/c.mk
deleted file mode 100644
index b7d80a9..0000000
--- a/share/mk/lint/c.mk
+++ /dev/null
@@ -1,102 +0,0 @@
-########################################################################
-# Copyright 2021-2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_LINT_C_INCLUDED
-MAKEFILE_LINT_C_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/build/src.mk
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/lint/_.mk
-
-
-DEFAULT_CHECKPATCHFLAGS :=
-EXTRA_CHECKPATCHFLAGS   :=
-CHECKPATCHFLAGS         := $(DEFAULT_CHECKPATCHFLAGS) $(EXTRA_CHECKPATCHFLAGS)
-CHECKPATCH              := checkpatch
-
-clang-tidy_config       := $(SYSCONFDIR)/clang-tidy/config.yaml
-DEFAULT_CLANG-TIDYFLAGS := \
-	--config-file=$(clang-tidy_config) \
-	--quiet \
-	--use-color
-EXTRA_CLANG-TIDYFLAGS   :=
-CLANG-TIDYFLAGS         := $(DEFAULT_CLANG-TIDYFLAGS) $(EXTRA_CLANG-TIDYFLAGS)
-CLANG-TIDY              := clang-tidy
-
-CPPCHECK_SUPPRESS     := $(SYSCONFDIR)/cppcheck/cppcheck.suppress
-DEFAULT_CPPCHECKFLAGS := \
-	--enable=all \
-	--error-exitcode=2 \
-	--inconclusive \
-	--quiet \
-	--suppressions-list=$(CPPCHECK_SUPPRESS)
-EXTRA_CPPCHECKFLAGS   :=
-CPPCHECKFLAGS         := $(DEFAULT_CPPCHECKFLAGS) $(EXTRA_CPPCHECKFLAGS)
-CPPCHECK              := cppcheck
-
-DEFAULT_CPPLINTFLAGS :=
-EXTRA_CPPLINTFLAGS   :=
-CPPLINTFLAGS         := $(DEFAULT_CPPLINTFLAGS) $(EXTRA_CPPLINTFLAGS)
-CPPLINT              := cpplint
-
-DEFAULT_IWYUFLAGS := \
-	-Xiwyu --no_fwd_decls \
-	-Xiwyu --error
-EXTRA_IWYUFLAGS   :=
-IWYUFLAGS         := $(DEFAULT_IWYUFLAGS) $(EXTRA_IWYUFLAGS)
-IWYU              := iwyu
-
-
-_LINT_c_checkpatch := $(patsubst %.c,%.lint-c.checkpatch.touch,$(_UNITS_src_c))
-_LINT_c_clang-tidy := $(patsubst %.c,%.lint-c.clang-tidy.touch,$(_UNITS_src_c))
-_LINT_c_cppcheck   := $(patsubst %.c,%.lint-c.cppcheck.touch,$(_UNITS_src_c))
-_LINT_c_cpplint    := $(patsubst %.c,%.lint-c.cpplint.touch,$(_UNITS_src_c))
-_LINT_c_iwyu       := $(patsubst %.c,%.lint-c.iwyu.touch,$(_UNITS_src_c))
-
-
-linters_c := checkpatch clang-tidy cppcheck cpplint iwyu
-lint_c    := $(foreach x,$(linters_c),lint-c-$(x))
-
-
-$(_LINT_c_checkpatch): %.lint-c.checkpatch.touch: %.c
-	$(info LINT (checkpatch)	$@)
-	$(CHECKPATCH) $(CHECKPATCHFLAGS) -f $<
-	touch $@
-
-$(_LINT_c_clang-tidy): %.lint-c.clang-tidy.touch: %.c
-	$(info LINT (clang-tidy)	$@)
-	$(CLANG-TIDY) $(CLANG-TIDYFLAGS) $< -- $(CPPFLAGS) $(CFLAGS) 2>&1 \
-	| $(SED) '/generated\.$$/d'
-	touch $@
-
-$(_LINT_c_cppcheck): %.lint-c.cppcheck.touch: %.c
-	$(info LINT (cppcheck)	$@)
-	$(CPPCHECK) $(CPPCHECKFLAGS) $<
-	touch $@
-
-$(_LINT_c_cpplint): %.lint-c.cpplint.touch: %.c
-	$(info LINT (cpplint)	$@)
-	$(CPPLINT) $(CPPLINTFLAGS) $< >/dev/null
-	touch $@
-
-$(_LINT_c_iwyu): %.lint-c.iwyu.touch: %.c
-	$(info LINT (iwyu)	$@)
-	$(IWYU) $(IWYUFLAGS) $(CPPFLAGS) $(CFLAGS) $< 2>&1 \
-	| $(TAC) \
-	| $(SED) '/correct/{N;d}' \
-	| $(TAC)
-	touch $@
-
-
-.PHONY: $(lint_c)
-$(lint_c): lint-c-%: $$(_LINT_c_%);
-
-.PHONY: lint-c
-lint-c: $(lint_c);
-
-
-endif  # include guard
diff --git a/share/mk/lint/c/_.mk b/share/mk/lint/c/_.mk
new file mode 100644
index 0000000..dc2f3e2
--- /dev/null
+++ b/share/mk/lint/c/_.mk
@@ -0,0 +1,18 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_C_INCLUDED
+MAKEFILE_LINT_C_INCLUDED := 1
+
+
+.PHONY: lint-c
+lint-c: \
+	lint-c-checkpatch \
+	lint-c-clang-tidy \
+	lint-c-cppcheck \
+	lint-c-cpplint \
+	lint-c-iwyu
+
+
+endif  # include guard
diff --git a/share/mk/lint/c/checkpatch.mk b/share/mk/lint/c/checkpatch.mk
new file mode 100644
index 0000000..7777a10
--- /dev/null
+++ b/share/mk/lint/c/checkpatch.mk
@@ -0,0 +1,35 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_C_CHECKPATCH_INCLUDED
+MAKEFILE_LINT_C_CHECKPATCH_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/examples/src.mk
+include $(MAKEFILEDIR)/configure/build-depends/checkpatch.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_LINT_c_checkpatch := $(_MANDIR)/man2/bpf.2.d/bpf.lint-c.checkpatch.touch
+
+
+_LINT_c_checkpatch := $(patsubst %.c, %.lint-c.checkpatch.touch, $(_UNITS_ex_c))
+ifeq ($(SKIP_XFAIL),yes)
+_LINT_c_checkpatch := $(filter-out $(_XFAIL_LINT_c_checkpatch), $(_LINT_c_checkpatch))
+endif
+
+
+$(_LINT_c_checkpatch): %.lint-c.checkpatch.touch: %.c $(CHECKPATCH_CONF) $(MK)
+	$(info	$(INFO_)CHECKPATCH	$@)
+	$(CHECKPATCH) $(CHECKPATCHFLAGS) -f $< >&2
+	$(TOUCH) $@
+
+
+.PHONY: lint-c-checkpatch
+lint-c-checkpatch: $(_LINT_c_checkpatch);
+
+
+endif  # include guard
diff --git a/share/mk/lint/c/clang-tidy.mk b/share/mk/lint/c/clang-tidy.mk
new file mode 100644
index 0000000..fd2e536
--- /dev/null
+++ b/share/mk/lint/c/clang-tidy.mk
@@ -0,0 +1,188 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_C_CLANG_TIDY_INCLUDED
+MAKEFILE_LINT_C_CLANG_TIDY_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/examples/src.mk
+include $(MAKEFILEDIR)/configure/build-depends/clang.mk
+include $(MAKEFILEDIR)/configure/build-depends/clang-tidy.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/cpp.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_LINT_c_clang_tidy := \
+	$(_MANDIR)/man2/add_key.2.d/add_key.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/bpf.2.d/bpf.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/chown.2.d/chown.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/clone.2.d/clone.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/close_range.2.d/close_range.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/copy_file_range.2.d/copy_file_range.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/eventfd.2.d/eventfd.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/execve.2.d/execve.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/execve.2.d/myecho.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/futex.2.d/futex.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/getdents.2.d/getdents.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/getrlimit.2.d/getrlimit.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/ioctl_fat.2.d/display_fat_volume_id.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/ioctl_fat.2.d/ioctl_fat.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/ioctl_fat.2.d/toggle_fat_archive_flag.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/ioctl_ns.2.d/ns_show.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/ioctl_tty.2.d/tcgets.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/kcmp.2.d/kcmp.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/keyctl.2.d/key_instantiate.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/listxattr.2.d/listxattr.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/membarrier.2.d/membarrier.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/memfd_create.2.d/t_get_seals.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/memfd_create.2.d/t_memfd_create.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/mmap.2.d/mmap.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/mount_setattr.2.d/mount_setattr.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/mprotect.2.d/mprotect.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/msgop.2.d/msgop.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/open_by_handle_at.2.d/t_name_to_handle_at.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/open_by_handle_at.2.d/t_open_by_handle_at.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/perf_event_open.2.d/perf_event_open.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/pidfd_open.2.d/pidfd_open.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/pidfd_send_signal.2.d/pidfd_send_signal.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/pipe.2.d/pipe.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/pivot_root.2.d/pivot_root.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/poll.2.d/poll_input.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/process_vm_readv.2.d/process_vm_readv.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/readlink.2.d/readlink.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/recvmmsg.2.d/recvmmsg.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/request_key.2.d/t_request_key.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/sched_setaffinity.2.d/sched_setaffinity.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/seccomp.2.d/seccomp.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/seccomp_unotify.2.d/seccomp_unotify.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/select_tut.2.d/select.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/semget.2.d/t_semget.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/sendmmsg.2.d/sendmmsg.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/setns.2.d/setns.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/shmop.2.d/svshm_string_read.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/shmop.2.d/svshm_string_write.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/sigaction.2.d/sigaction.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/spu_run.2.d/spu_run.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/stat.2.d/stat.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/_syscall.2.d/_syscall.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/syscall.2.d/syscall.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/sysctl.2.d/sysctl.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/tee.2.d/tee.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/timer_create.2.d/timer_create.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/timerfd_create.2.d/timerfd_create.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/unshare.2.d/unshare.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/userfaultfd.2.d/userfaultfd.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man2/wait.2.d/wait.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/atexit.3.d/atexit.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/backtrace.3.d/backtrace.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/bsearch.3.d/bsearch.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/bswap.3.d/bswap.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/cacos.3.d/cacos.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/cacosh.3.d/cacosh.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/catan.3.d/catan.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/catanh.3.d/catanh.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/circleq.3.d/circleq.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/clock_getcpuclockid.3.d/clock_getcpuclockid.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/CPU_SET.3.d/CPU_SET.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/dl_iterate_phdr.3.d/dl_iterate_phdr.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/dlinfo.3.d/dlinfo.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/duplocale.3.d/duplocale.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/encrypt.3.d/encrypt.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/end.3.d/end.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/endian.3.d/endian.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/envz_add.3.d/envz_add.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/fmemopen.3.d/fmemopen.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/fopencookie.3.d/fopencookie.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/fread.3.d/fread.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/frexp.3.d/frexp.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/ftw.3.d/ftw.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/_Generic.3.d/_Generic.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getaddrinfo.3.d/client.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getaddrinfo.3.d/server.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getaddrinfo_a.3.d/async.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getaddrinfo_a.3.d/sync.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getdate.3.d/getdate.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getgrent_r.3.d/getgrent_r.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getgrouplist.3.d/getgrouplist.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getline.3.d/getline.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getopt.3.d/getopt.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getopt.3.d/getopt_long.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getprotoent_r.3.d/getprotoent_r.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getpwnam.3.d/getpwnam.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getservent_r.3.d/getservent_r.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getsubopt.3.d/getsubopt.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/getutent.3.d/getutent.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/hsearch.3.d/hsearch.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/if_nameindex.3.d/if_nameindex.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/inet.3.d/inet.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/inet_net_pton.3.d/inet_net_pton.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/inet_pton.3.d/inet_pton.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/insque.3.d/insque.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/list.3.d/list.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/mallinfo.3.d/mallinfo.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/malloc_info.3.d/malloc_info.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/mallopt.3.d/mallopt.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/matherr.3.d/matherr.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/MAX.3.d/MAX.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/mbstowcs.3.d/mbstowcs.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/mq_getattr.3.d/mq_getattr.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/mq_notify.3.d/mq_notify.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/newlocale.3.d/newlocale.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/offsetof.3.d/offsetof.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/posix_spawn.3.d/posix_spawn.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/__ppc_get_timebase.3.d/__ppc_get_timebase.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/pthread_attr_init.3.d/pthread_attr_init.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/pthread_cleanup_push.3.d/pthread_cleanup_push.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/pthread_create.3.d/pthread_create.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/pthread_getattr_np.3.d/pthread_getattr_np.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/pthread_setname_np.3.d/pthread_setname_np.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/pthread_setschedparam.3.d/pthreads_sched_test.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/qsort.3.d/qsort.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/rand.3.d/rand.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/rpmatch.3.d/rpmatch.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/rtime.3.d/rtime.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/scandir.3.d/scandir.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/sem_wait.3.d/sem_wait.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/setbuf.3.d/setbuf.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/shm_open.3.d/pshm_ucase_bounce.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/shm_open.3.d/pshm_ucase_send.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/slist.3.d/slist.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/stailq.3.d/stailq.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/static_assert.3.d/must_be.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/stpncpy.3.d/stpncpy.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strcmp.3.d/string_comp.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strcpy.3.d/strcpy.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strftime.3.d/strftime.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strsep.3.d/strsep.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strtok.3.d/strtok.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strtol.3.d/strtol.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/strverscmp.3.d/strverscmp.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/tailq.3.d/tailq.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/tsearch.3.d/tsearch.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3/wordexp.3.d/wordexp.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3const/EXIT_SUCCESS.3const.d/EXIT_SUCCESS.lint-c.clang-tidy.touch \
+	$(_MANDIR)/man3head/printf.h.3head.d/register_printf_specifier.lint-c.clang-tidy.touch
+
+
+_LINT_c_clang_tidy := $(patsubst %.c, %.lint-c.clang-tidy.touch, $(_UNITS_ex_c))
+ifeq ($(SKIP_XFAIL),yes)
+_LINT_c_clang_tidy := $(filter-out $(_XFAIL_LINT_c_clang_tidy), $(_LINT_c_clang_tidy))
+endif
+
+
+$(_LINT_c_clang_tidy): %.lint-c.clang-tidy.touch: %.c $(CLANG_TIDY_CONF) $(MK)
+	$(info	$(INFO_)CLANG_TIDY	$@)
+	$(CLANG_TIDY) $(CLANG_TIDYFLAGS) $< -- $(CPPFLAGS) $(CLANGFLAGS) 2>&1 \
+	| $(SED) '/generated\.$$/d' >&2
+	$(TOUCH) $@
+
+
+.PHONY: lint-c-clang-tidy
+lint-c-clang-tidy: $(_LINT_c_clang_tidy);
+
+
+endif  # include guard
diff --git a/share/mk/lint/c/cppcheck.mk b/share/mk/lint/c/cppcheck.mk
new file mode 100644
index 0000000..5fa74ac
--- /dev/null
+++ b/share/mk/lint/c/cppcheck.mk
@@ -0,0 +1,74 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_C_CPPCHECK_INCLUDED
+MAKEFILE_LINT_C_CPPCHECK_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/examples/src.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/cppcheck.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_LINT_c_cppcheck := \
+	$(_MANDIR)/man2/chown.2.d/chown.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/close_range.2.d/close_range.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/kcmp.2.d/kcmp.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/keyctl.2.d/key_instantiate.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/memfd_create.2.d/t_memfd_create.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/msgop.2.d/msgop.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/open_by_handle_at.2.d/t_open_by_handle_at.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/shmop.2.d/svshm_string_read.lint-c.cppcheck.touch \
+	$(_MANDIR)/man2/unshare.2.d/unshare.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/bsearch.3.d/bsearch.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/dl_iterate_phdr.3.d/dl_iterate_phdr.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/dlopen.3.d/dlopen.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/encrypt.3.d/encrypt.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/envz_add.3.d/envz_add.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/getaddrinfo_a.3.d/async.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/getdate.3.d/getdate.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/getgrouplist.3.d/getgrouplist.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/hsearch.3.d/hsearch.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/malloc_info.3.d/malloc_info.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/mallopt.3.d/mallopt.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/matherr.3.d/matherr.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/mcheck.3.d/mcheck.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/mtrace.3.d/t_mtrace.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/newlocale.3.d/newlocale.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/pthread_attr_init.3.d/pthread_attr_init.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/pthread_create.3.d/pthread_create.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/pthread_getattr_np.3.d/pthread_getattr_np.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/pthread_getcpuclockid.3.d/pthread_getcpuclockid.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/pthread_setschedparam.3.d/pthreads_sched_test.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/setaliasent.3.d/setaliasent.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/setbuf.3.d/setbuf.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/shm_open.3.d/pshm_ucase_send.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/stpncpy.3.d/stpncpy.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/strftime.3.d/strftime.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/strncat.3.d/strncat.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/strsep.3.d/strsep.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/strtok.3.d/strtok.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/strtol.3.d/strtol.lint-c.cppcheck.touch \
+	$(_MANDIR)/man3/tsearch.3.d/tsearch.lint-c.cppcheck.touch
+
+
+_LINT_c_cppcheck := $(patsubst %.c, %.lint-c.cppcheck.touch, $(_UNITS_ex_c))
+ifeq ($(SKIP_XFAIL),yes)
+_LINT_c_cppcheck := $(filter-out $(_XFAIL_LINT_c_cppcheck), $(_LINT_c_cppcheck))
+endif
+
+
+$(_LINT_c_cppcheck): %.lint-c.cppcheck.touch: %.c $(CPPCHECK_SUPPRESS) $(MK)
+	$(info	$(INFO_)CPPCHECK	$@)
+	$(CPPCHECK) $(CPPCHECKFLAGS) $<
+	$(TOUCH) $@
+
+
+.PHONY: lint-c-cppcheck
+lint-c-cppcheck: $(_LINT_c_cppcheck);
+
+
+endif  # include guard
diff --git a/share/mk/lint/c/cpplint.mk b/share/mk/lint/c/cpplint.mk
new file mode 100644
index 0000000..8eb3984
--- /dev/null
+++ b/share/mk/lint/c/cpplint.mk
@@ -0,0 +1,27 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_C_CPPLINT_INCLUDED
+MAKEFILE_LINT_C_CPPLINT_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/examples/src.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/cpplint.mk
+
+
+_LINT_c_cpplint := $(patsubst %.c, %.lint-c.cpplint.touch, $(_UNITS_ex_c))
+
+
+$(_LINT_c_cpplint): %.lint-c.cpplint.touch: %.c $(CPPLINT_CONF) $(MK)
+	$(info	$(INFO_)CPPLINT		$@)
+	$(CPPLINT) $(CPPLINTFLAGS) $< >/dev/null
+	$(TOUCH) $@
+
+
+.PHONY: lint-c-cpplint
+lint-c-cpplint: $(_LINT_c_cpplint);
+
+
+endif  # include guard
diff --git a/share/mk/lint/c/iwyu.mk b/share/mk/lint/c/iwyu.mk
new file mode 100644
index 0000000..32c2c07
--- /dev/null
+++ b/share/mk/lint/c/iwyu.mk
@@ -0,0 +1,109 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_C_IWYU_INCLUDED
+MAKEFILE_LINT_C_IWYU_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/build/examples/src.mk
+include $(MAKEFILEDIR)/configure/build-depends/clang.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/cpp.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/iwyu.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+
+
+_XFAIL_LINT_c_iwyu := \
+	$(_MANDIR)/man2/clock_getres.2.d/clock_getres.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/getrlimit.2.d/getrlimit.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/listxattr.2.d/listxattr.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/mount_setattr.2.d/mount_setattr.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/recvmmsg.2.d/recvmmsg.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/seccomp.2.d/seccomp.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/seccomp_unotify.2.d/seccomp_unotify.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/select.2.d/select.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/semget.2.d/t_semget.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/sendmmsg.2.d/sendmmsg.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/_syscall.2.d/_syscall.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/timer_create.2.d/timer_create.lint-c.iwyu.touch \
+	$(_MANDIR)/man2/userfaultfd.2.d/userfaultfd.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/backtrace.3.d/backtrace.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/bsearch.3.d/bsearch.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/bswap.3.d/bswap.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/cacos.3.d/cacos.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/cacosh.3.d/cacosh.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/catan.3.d/catan.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/catanh.3.d/catanh.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/clock_getcpuclockid.3.d/clock_getcpuclockid.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/CPU_SET.3.d/CPU_SET.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/dl_iterate_phdr.3.d/dl_iterate_phdr.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/dlinfo.3.d/dlinfo.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/duplocale.3.d/duplocale.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/endian.3.d/endian.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/envz_add.3.d/envz_add.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/fopencookie.3.d/fopencookie.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/frexp.3.d/frexp.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/ftw.3.d/ftw.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/_Generic.3.d/_Generic.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getaddrinfo.3.d/client.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getaddrinfo.3.d/server.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getgrouplist.3.d/getgrouplist.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getline.3.d/getline.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getopt.3.d/getopt_long.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getprotoent_r.3.d/getprotoent_r.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getservent_r.3.d/getservent_r.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/getsubopt.3.d/getsubopt.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/if_nameindex.3.d/if_nameindex.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/inet.3.d/inet.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/inet_net_pton.3.d/inet_net_pton.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/inet_pton.3.d/inet_pton.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/mallinfo.3.d/mallinfo.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/malloc_info.3.d/malloc_info.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/mbstowcs.3.d/mbstowcs.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/mq_getattr.3.d/mq_getattr.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/mq_notify.3.d/mq_notify.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/mtrace.3.d/t_mtrace.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/newlocale.3.d/newlocale.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/posix_spawn.3.d/posix_spawn.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_attr_init.3.d/pthread_attr_init.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_cleanup_push.3.d/pthread_cleanup_push.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_getattr_default_np.3.d/pthread_getattr_default_np.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_getattr_np.3.d/pthread_getattr_np.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_getcpuclockid.3.d/pthread_getcpuclockid.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_setaffinity_np.3.d/pthread_setaffinity_np.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_setname_np.3.d/pthread_setname_np.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/pthread_setschedparam.3.d/pthreads_sched_test.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/sem_wait.3.d/sem_wait.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/shm_open.3.d/pshm_ucase_bounce.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/shm_open.3.d/pshm_ucase_send.lint-c.iwyu.touch \
+	$(_MANDIR)/man3/slist.3.d/slist.lint-c.iwyu.touch
+
+
+_LINT_c_iwyu := $(patsubst %.c, %.lint-c.iwyu.touch, $(_UNITS_ex_c))
+ifeq ($(SKIP_XFAIL),yes)
+_LINT_c_iwyu := $(filter-out $(_XFAIL_LINT_c_iwyu), $(_LINT_c_iwyu))
+endif
+
+
+$(_LINT_c_iwyu): %.lint-c.iwyu.touch: %.c $(MK)
+	$(info	$(INFO_)IWYU		$@)
+	! ($(IWYU) $(IWYUFLAGS) $(CPPFLAGS) $(CLANGFLAGS) $< 2>&1 \
+	   | $(SED) -n '/should add these lines:/,$$p' \
+	   | $(TAC) \
+	   | $(SED) '/correct/{N;d}' \
+	   | $(TAC) \
+	   || $(TRUE); \
+	) \
+	| $(GREP) ^ >&2
+	$(TOUCH) $@
+
+
+.PHONY: lint-c-iwyu
+lint-c-iwyu: $(_LINT_c_iwyu);
+
+
+endif  # include guard
diff --git a/share/mk/lint/man/_.mk b/share/mk/lint/man/_.mk
index 8bbc01c..67ff4b8 100644
--- a/share/mk/lint/man/_.mk
+++ b/share/mk/lint/man/_.mk
@@ -1,16 +1,13 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_LINT_MAN_INCLUDED
 MAKEFILE_LINT_MAN_INCLUDED := 1
 
 
-DEFAULT_MANDOCFLAGS := -Tlint
-EXTRA_MANDOCFLAGS   :=
-MANDOCFLAGS         := $(DEFAULT_MANDOCFLAGS) $(EXTRA_MANDOCFLAGS)
+.PHONY: lint-man
+lint-man: lint-man-mandoc lint-man-tbl;
 
 
 endif  # include guard
diff --git a/share/mk/lint/man/man.mk b/share/mk/lint/man/man.mk
deleted file mode 100644
index cb1bf53..0000000
--- a/share/mk/lint/man/man.mk
+++ /dev/null
@@ -1,69 +0,0 @@
-########################################################################
-# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_LINT_MAN_MAN_INCLUDED
-MAKEFILE_LINT_MAN_MAN_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/lint/_.mk
-include $(MAKEFILEDIR)/lint/man/_.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-mandoc_man_ignore_grep := $(DATAROOTDIR)/lint/mandoc/man.ignore.grep
-
-_LINT_man_mandoc :=$(patsubst $(MANDIR)/%,$(_MANDIR)/%.lint-man.mandoc.touch,$(NONSO_MAN))
-_LINT_man_tbl    :=$(patsubst $(MANDIR)/%,$(_MANDIR)/%.lint-man.tbl.touch,$(NONSO_MAN))
-
-
-linters_man := mandoc tbl
-lint_man    := $(foreach x,$(linters_man),lint-man-$(x))
-
-
-$(_LINT_man_mandoc): $(_MANDIR)/%.lint-man.mandoc.touch: $(MANDIR)/% $(mandoc_man_ignore_grep) | $$(@D)/
-	$(info LINT (mandoc)	$@)
-	! ($(MANDOC) -man $(MANDOCFLAGS) $< 2>&1 \
-	   | $(GREP) -v -f '$(mandoc_man_ignore_grep)' \
-	   ||:; \
-	) \
-	| $(GREP) ^ >&2
-	touch $@
-
-$(_LINT_man_tbl): $(_MANDIR)/%.lint-man.tbl.touch: $(MANDIR)/% | $$(@D)/
-	$(info LINT (tbl comment)	$@)
-	if $(GREP) -q '^\.TS$$' $< && ! $(HEAD) -n1 $< | $(GREP) -q '\\" t$$'; \
-	then \
-		>&2 $(ECHO) "$<:1: missing '\\\" t' comment:"; \
-		>&2 $(HEAD) -n1 <$<; \
-		exit 1; \
-	fi
-	if $(HEAD) -n1 $< | $(GREP) -q '\\" t$$' && ! $(GREP) -q '^\.TS$$' $<; \
-	then \
-		>&2 $(ECHO) "$<:1: spurious '\\\" t' comment:"; \
-		>&2 $(HEAD) -n1 <$<; \
-		exit 1; \
-	fi
-	if $(TAIL) -n+2 <$< | $(GREP) -q '\\" t$$'; \
-	then \
-		>&2 $(ECHO) "$<: spurious '\\\" t' not in first line:"; \
-		>&2 $(GREP) -n '\\" t$$' $< /dev/null; \
-		exit 1; \
-	fi
-	touch $@
-
-
-.PHONY: lint-man-mandoc
-lint-man-mandoc: $(_LINT_man_mandoc);
-.PHONY: lint-man-tbl
-lint-man-tbl:    $(_LINT_man_tbl);
-
-.PHONY: lint-man
-lint-man: $(lint_man);
-
-
-endif  # include guard
diff --git a/share/lint/mandoc/man.ignore.grep b/share/mk/lint/man/mandoc.ignore.grep
index a2f91bc..a2f91bc 100644
--- a/share/lint/mandoc/man.ignore.grep
+++ b/share/mk/lint/man/mandoc.ignore.grep
diff --git a/share/mk/lint/man/mandoc.mk b/share/mk/lint/man/mandoc.mk
new file mode 100644
index 0000000..efa69ab
--- /dev/null
+++ b/share/mk/lint/man/mandoc.mk
@@ -0,0 +1,53 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_MAN_MANDOC_INCLUDED
+MAKEFILE_LINT_MAN_MANDOC_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/mandoc.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/configure/xfail.mk
+include $(MAKEFILEDIR)/lint/man/_.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_XFAIL_LINT_man_mandoc := \
+	$(_MANDIR)/man3/pthread_cond_init.3.lint-man.mandoc.touch \
+	$(_MANDIR)/man3/pthread_key_create.3.lint-man.mandoc.touch \
+	$(_MANDIR)/man3/pthread_mutex_init.3.lint-man.mandoc.touch \
+	$(_MANDIR)/man5/dir_colors.5.lint-man.mandoc.touch \
+	$(_MANDIR)/man7/bpf-helpers.7.lint-man.mandoc.touch \
+	$(_MANDIR)/man7/uri.7.lint-man.mandoc.touch \
+	$(_MANDIR)/man8/zic.8.lint-man.mandoc.touch
+
+
+_LINT_man_mandoc := \
+	$(patsubst $(MANDIR)/%, $(_MANDIR)/%.lint-man.mandoc.touch, $(NONSO_MAN))
+ifeq ($(SKIP_XFAIL),yes)
+_LINT_man_mandoc := $(filter-out $(_XFAIL_LINT_man_mandoc), $(_LINT_man_mandoc))
+endif
+
+
+mandoc_man_ignore_grep := $(MAKEFILEDIR)/lint/man/mandoc.ignore.grep
+
+
+$(_LINT_man_mandoc): $(_MANDIR)/%.lint-man.mandoc.touch: $(MANDIR)/% $(mandoc_man_ignore_grep) $(MK) | $$(@D)/
+	$(info	$(INFO_)MANDOC		$@)
+	! ($(MANDOC) -man $(MANDOCFLAGS) $< 2>&1 \
+	   | $(GREP) -v -f '$(mandoc_man_ignore_grep)' \
+	   || $(TRUE); \
+	) \
+	| $(GREP) ^ >&2
+	$(TOUCH) $@
+
+
+.PHONY: lint-man-mandoc
+lint-man-mandoc: $(_LINT_man_mandoc);
+
+
+endif  # include guard
diff --git a/share/mk/lint/man/mdoc.mk b/share/mk/lint/man/mdoc.mk
deleted file mode 100644
index 9b5f5b4..0000000
--- a/share/mk/lint/man/mdoc.mk
+++ /dev/null
@@ -1,44 +0,0 @@
-########################################################################
-# Copyright 2023, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_LINT_MAN_MDOC_INCLUDED
-MAKEFILE_LINT_MAN_MDOC_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/build/_.mk
-include $(MAKEFILEDIR)/lint/_.mk
-include $(MAKEFILEDIR)/lint/man/_.mk
-include $(MAKEFILEDIR)/src.mk
-
-
-mandoc_mdoc_ignore_grep := $(DATAROOTDIR)/lint/mandoc/mdoc.ignore.grep
-
-_LINT_mdoc_mandoc:=$(patsubst $(MANDIR)/%,$(_MANDIR)/%.lint-mdoc.mandoc.touch,$(NONSO_MDOC))
-
-
-linters_mdoc := mandoc
-lint_mdoc    := $(foreach x,$(linters_mdoc),lint-mdoc-$(x))
-
-
-$(_LINT_mdoc_mandoc): $(_MANDIR)/%.lint-mdoc.mandoc.touch: $(MANDIR)/% $(mandoc_mdoc_ignore_grep) | $$(@D)/
-	$(info LINT (mandoc)	$@)
-	! ($(MANDOC) -mdoc $(MANDOCFLAGS) $< 2>&1 \
-	   | $(GREP) -v -f '$(mandoc_mdoc_ignore_grep)' \
-	   ||:; \
-	) \
-	| $(GREP) ^ >&2
-	touch $@
-
-
-.PHONY: $(lint_mdoc)
-$(lint_mdoc): lint-mdoc-%: $$(_LINT_mdoc_%);
-
-.PHONY: lint-mdoc
-lint-mdoc: $(lint_mdoc);
-
-
-endif  # include guard
diff --git a/share/mk/lint/man/tbl.mk b/share/mk/lint/man/tbl.mk
new file mode 100644
index 0000000..23e6eda
--- /dev/null
+++ b/share/mk/lint/man/tbl.mk
@@ -0,0 +1,48 @@
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_MAN_TBL_INCLUDED
+MAKEFILE_LINT_MAN_TBL_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/src.mk
+include $(MAKEFILEDIR)/lint/man/_.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+_LINT_man_tbl := \
+	$(patsubst $(MANDIR)/%, $(_MANDIR)/%.lint-man.tbl.touch, $(NONSO_MAN))
+
+
+$(_LINT_man_tbl): $(_MANDIR)/%.lint-man.tbl.touch: $(MANDIR)/% $(MK) | $$(@D)/
+	$(info	$(INFO_)GREP		$@)
+	if $(GREP) -q '^\.TS$$' $< && ! $(HEAD) -n1 $< | $(GREP) -q '\\" t$$'; \
+	then \
+		>&2 $(ECHO) "$<:1: missing '\\\" t' comment:"; \
+		>&2 $(HEAD) -n1 <$<; \
+		exit 1; \
+	fi
+	if $(HEAD) -n1 $< | $(GREP) -q '\\" t$$' && ! $(GREP) -q '^\.TS$$' $<; \
+	then \
+		>&2 $(ECHO) "$<:1: spurious '\\\" t' comment:"; \
+		>&2 $(HEAD) -n1 <$<; \
+		exit 1; \
+	fi
+	if $(TAIL) -n+2 <$< | $(GREP) -q '\\" t$$'; \
+	then \
+		>&2 $(ECHO) "$<: spurious '\\\" t' not in first line:"; \
+		>&2 $(GREP) -n '\\" t$$' $< /dev/null; \
+		exit 1; \
+	fi
+	$(TOUCH) $@
+
+
+.PHONY: lint-man-tbl
+lint-man-tbl: $(_LINT_man_tbl);
+
+
+endif  # include guard
diff --git a/share/mk/lint/mdoc/_.mk b/share/mk/lint/mdoc/_.mk
new file mode 100644
index 0000000..0f51ee2
--- /dev/null
+++ b/share/mk/lint/mdoc/_.mk
@@ -0,0 +1,31 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_MDOC_INCLUDED
+MAKEFILE_LINT_MDOC_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/directory_variables.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+linters_mdoc := mandoc
+
+
+$(foreach l, $(linters_mdoc),                                                 \
+	$(eval _LINT_mdoc_$(l) :=                                             \
+		$(patsubst $(MANDIR)/%, $(_MANDIR)/%.lint-mdoc.$(l).touch,    \
+			$(NONSO_MDOC))))
+
+
+$(foreach l, $(linters_mdoc),                                                 \
+	$(eval .PHONY: lint-mdoc-$(l)))
+$(foreach l, $(linters_mdoc),                                                 \
+	$(eval lint-mdoc-$(l): $(_LINT_mdoc_$(l));))
+.PHONY: lint-mdoc
+lint-mdoc: $(foreach l, $(linters_mdoc), lint-mdoc-$(l));
+
+
+endif  # include guard
diff --git a/share/mk/lint/mdoc/mandoc.ignore.grep b/share/mk/lint/mdoc/mandoc.ignore.grep
new file mode 100644
index 0000000..4c73c59
--- /dev/null
+++ b/share/mk/lint/mdoc/mandoc.ignore.grep
@@ -0,0 +1,5 @@
+STYLE: legacy man(7) date format: Dd
+STYLE: lower case character in document title: Dt
+STYLE: operating system explicitly specified: Os
+STYLE: referenced manual not found: Xr
+WARNING: cross reference to self: Xr
diff --git a/share/mk/lint/mdoc/mandoc.mk b/share/mk/lint/mdoc/mandoc.mk
new file mode 100644
index 0000000..8b209b8
--- /dev/null
+++ b/share/mk/lint/mdoc/mandoc.mk
@@ -0,0 +1,30 @@
+# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
+
+ifndef MAKEFILE_LINT_MDOC_MANDOC_INCLUDED
+MAKEFILE_LINT_MDOC_MANDOC_INCLUDED := 1
+
+
+include $(MAKEFILEDIR)/build/_.mk
+include $(MAKEFILEDIR)/configure/build-depends/coreutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/mandoc.mk
+include $(MAKEFILEDIR)/lint/mdoc/_.mk
+include $(MAKEFILEDIR)/src.mk
+
+
+mandoc_mdoc_ignore_grep := $(MAKEFILEDIR)/lint/mdoc/mandoc.ignore.grep
+
+
+$(_LINT_mdoc_mandoc): $(_MANDIR)/%.lint-mdoc.mandoc.touch: $(MANDIR)/% $(mandoc_mdoc_ignore_grep) | $$(@D)/
+	$(info	$(INFO_)MANDOC		$@)
+	! ($(MANDOC) -mdoc $(MANDOCFLAGS) $< 2>&1 \
+	   | $(GREP) -v -f '$(mandoc_mdoc_ignore_grep)' \
+	   || $(TRUE); \
+	) \
+	| $(GREP) ^ >&2
+	$(TOUCH) $@
+
+
+endif  # include guard
diff --git a/share/mk/src.mk b/share/mk/src.mk
index 65825b5..20c0037 100644
--- a/share/mk/src.mk
+++ b/share/mk/src.mk
@@ -1,37 +1,62 @@
-########################################################################
-# Copyright 2021-2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
+# Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 
 
 ifndef MAKEFILE_SRC_INCLUDED
 MAKEFILE_SRC_INCLUDED := 1
 
 
-include $(MAKEFILEDIR)/cmd.mk
+include $(MAKEFILEDIR)/configure/build-depends/findutils.mk
+include $(MAKEFILEDIR)/configure/build-depends/grep.mk
+include $(MAKEFILEDIR)/configure/build-depends/sed.mk
+include $(MAKEFILEDIR)/configure/src.mk
 
 
-MANDIR := $(srcdir)
-MANEXT := \.[0-9]\w*\(\.man\)\?\(\.in\)\?$
+SORTMAN := $(srcdir)/scripts/sortman
+
+
+MANEXT := \(\.[[:digit:]]\([[:alpha:]][[:alnum:]]*\)\?\>\|\.man\)\+\(\.man\|\.in\)*$
 
 
 MANPAGES := $(shell $(FIND) $(MANDIR)/* -type f \
 		| $(GREP) '$(MANEXT)' \
-		| $(SORT) \
+		| $(SORTMAN) \
 		| $(SED) 's,:,\\:,g')
 
-MAN1PAGES      := $(filter $(MANDIR)/man1/%,$(filter %.1,$(MANPAGES)))
-MAN2PAGES      := $(filter $(MANDIR)/man2/%,$(filter %.2,$(MANPAGES)))
-MAN2TYPEPAGES  := $(filter $(MANDIR)/man2type/%,$(filter %.2type,$(MANPAGES)))
-MAN3PAGES      := $(filter $(MANDIR)/man3/%,$(filter %.3,$(MANPAGES)))
-MAN3CONSTPAGES := $(filter $(MANDIR)/man3const/%,$(filter %.3const,$(MANPAGES)))
-MAN3HEADPAGES  := $(filter $(MANDIR)/man3head/%,$(filter %.3head,$(MANPAGES)))
-MAN3TYPEPAGES  := $(filter $(MANDIR)/man3type/%,$(filter %.3type,$(MANPAGES)))
-MAN4PAGES      := $(filter $(MANDIR)/man4/%,$(filter %.4,$(MANPAGES)))
-MAN5PAGES      := $(filter $(MANDIR)/man5/%,$(filter %.5,$(MANPAGES)))
-MAN6PAGES      := $(filter $(MANDIR)/man6/%,$(filter %.6,$(MANPAGES)))
-MAN7PAGES      := $(filter $(MANDIR)/man7/%,$(filter %.7,$(MANPAGES)))
-MAN8PAGES      := $(filter $(MANDIR)/man8/%,$(filter %.8,$(MANPAGES)))
+
+MANINTROPAGES := $(shell $(FIND) $(MANDIR)/* -type f \
+		| $(GREP) '$(MANEXT)' \
+		| $(GREP) '/intro$(MANEXT)' \
+		| $(SORTMAN) \
+		| $(SED) 's,:,\\:,g')
+
+
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval MAN$(s)DIR := $(MANDIR)/man$(s)))
+
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval MAN$(s)PAGES :=                                                \
+		$(filter-out $(MANINTROPAGES),                                \
+			$(filter $(MANDIR)/man$(s)/%,                         \
+				$(filter %.$(s),                              \
+					$(MANPAGES))))))
+$(foreach s, $(MANSECTIONS),                                                  \
+	$(eval MAN$(s)INTROPAGE :=                                            \
+		$(filter $(MANDIR)/man$(s)/%,                                 \
+			$(filter %.$(s),                                      \
+				$(MANINTROPAGES)))))
+
+
+NONSO_MAN := $(shell $(FIND) $(MANDIR)/* -type f \
+		| $(GREP) '$(MANEXT)' \
+		| $(XARGS) $(GREP) -l '^\.TH ' \
+		| $(SORTMAN) \
+		| $(SED) 's,:,\\:,g')
+NONSO_MDOC := $(shell $(FIND) $(MANDIR)/* -type f \
+		| $(GREP) '$(MANEXT)' \
+		| $(XARGS) $(GREP) -l '^\.Dt ' \
+		| $(SORTMAN) \
+		| $(SED) 's,:,\\:,g')
 
 
 endif  # include guard
diff --git a/share/mk/verbose.mk b/share/mk/verbose.mk
deleted file mode 100644
index 2cc4450..0000000
--- a/share/mk/verbose.mk
+++ /dev/null
@@ -1,19 +0,0 @@
-########################################################################
-# Copyright 2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_VERBOSE_INCLUDED
-MAKEFILE_VERBOSE_INCLUDED := 1
-
-
-ifdef V
-HIDE_ERR :=
-else
-HIDE_ERR := 2>/dev/null
-.SILENT:
-endif
-
-
-endif  # include guard
diff --git a/share/mk/version.mk b/share/mk/version.mk
deleted file mode 100644
index af3c0cb..0000000
--- a/share/mk/version.mk
+++ /dev/null
@@ -1,20 +0,0 @@
-########################################################################
-# Copyright 2022, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: GPL-3.0-or-later
-########################################################################
-
-
-ifndef MAKEFILE_VERSION_INCLUDED
-MAKEFILE_VERSION_INCLUDED := 1
-
-
-include $(MAKEFILEDIR)/cmd.mk
-include $(MAKEFILEDIR)/verbose.mk
-
-
-DISTNAME    := $(shell $(GIT) describe $(HIDE_ERR))
-DISTVERSION := $(patsubst man-pages-%,%,$(DISTNAME))
-DISTDATE    := $(shell $(GIT) log -1 --format='%aD')
-
-
-endif  # include guard