5 files changed, 249 insertions, 0 deletions
diff --git a/share/mk/lint/_.mk b/share/mk/lint/_.mk
new file mode 100644
index 0000000..9d93bd3
--- /dev/null
+++ b/share/mk/lint/_.mk
@@ -0,0 +1,18 @@
+########################################################################
+# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: GPL-3.0-or-later
+########################################################################
+
+
+ifndef MAKEFILE_LINT_INCLUDED
+MAKEFILE_LINT_INCLUDED := 1
+
+
+lint := lint-c lint-man lint-mdoc
+
+
+.PHONY: lint
+lint: $(lint);
+
+
+endif  # include guard
diff --git a/share/mk/lint/c.mk b/share/mk/lint/c.mk
new file mode 100644
index 0000000..b7d80a9
--- /dev/null
+++ b/share/mk/lint/c.mk
@@ -0,0 +1,102 @@
+########################################################################
+# 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/man/_.mk b/share/mk/lint/man/_.mk
new file mode 100644
index 0000000..8bbc01c
--- /dev/null
+++ b/share/mk/lint/man/_.mk
@@ -0,0 +1,16 @@
+########################################################################
+# Copyright 2021-2023, Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: GPL-3.0-or-later
+########################################################################
+
+
+ifndef MAKEFILE_LINT_MAN_INCLUDED
+MAKEFILE_LINT_MAN_INCLUDED := 1
+
+
+DEFAULT_MANDOCFLAGS := -Tlint
+EXTRA_MANDOCFLAGS   :=
+MANDOCFLAGS         := $(DEFAULT_MANDOCFLAGS) $(EXTRA_MANDOCFLAGS)
+
+
+endif  # include guard
diff --git a/share/mk/lint/man/man.mk b/share/mk/lint/man/man.mk
new file mode 100644
index 0000000..cb1bf53
--- /dev/null
+++ b/share/mk/lint/man/man.mk
@@ -0,0 +1,69 @@
+########################################################################
+# 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/mk/lint/man/mdoc.mk b/share/mk/lint/man/mdoc.mk
new file mode 100644
index 0000000..9b5f5b4
--- /dev/null
+++ b/share/mk/lint/man/mdoc.mk
@@ -0,0 +1,44 @@
+########################################################################
+# 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