1 files changed, 117 insertions, 0 deletions
diff --git a/share/mk/build/src.mk b/share/mk/build/src.mk
new file mode 100644
index 0000000..365c256
--- /dev/null
+++ b/share/mk/build/src.mk
@@ -0,0 +1,117 @@
+########################################################################
+# 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