1 files changed, 73 insertions, 0 deletions
diff --git a/lib/build-obj.mk b/lib/build-obj.mk
new file mode 100644
index 0000000..95c95b2
--- /dev/null
+++ b/lib/build-obj.mk
@@ -0,0 +1,73 @@
+# Copyright 2022 Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier:  LGPL-3.0-or-later WITH LGPL-3.0-linking-exception
+
+
+ifndef LIB_BUILD_OBJ_MK_
+LIB_BUILD_OBJ_MK_ := 1
+
+
+include $(srcdir)/lib/build.mk
+include $(srcdir)/lib/cmd.mk
+include $(srcdir)/lib/src.mk
+include $(srcdir)/lib/verbose.mk
+include $(srcdir)/lib/version.mk
+
+
+_TU_gch   := $(addsuffix .gch,$(_TU_h))
+_TU_i     := $(addsuffix .i,$(_TU_c))
+_TU_s     := $(addsuffix .s,$(_TU_c))
+_TU_o     := $(addsuffix .o,$(_TU_c))
+
+
+$(_TU_gch): %.gch: % $(mk) $(_LIB_pc_u) | %.d $$(@D)/
+	$(info	CC (pch)	$@)
+	for opt in g 0 1 2 s 3 fast; do \
+	$(CC) $(CPPFLAGS) $(CFLAGS) -O$$opt -c -o $*.O$$opt.gch $<; \
+	done
+	$(CC) $(CPPFLAGS) $(CFLAGS)         -c -o $@            $<
+
+$(_TU_i): %.i: % $(mk) $(_LIB_pc_u) | %.d $$(@D)/
+	$(info	CC (cpp)	$@)
+	for opt in g 0 1 2 s 3 fast; do \
+	$(CC) $(CPPFLAGS) $(CFLAGS) -O$$opt -E -o $*.O$$opt.i $<; \
+	done
+	$(CC) $(CPPFLAGS) $(CFLAGS)         -E -o $@          $<
+
+$(_TU_s): %.s: %.i $(mk) $(_LIB_pc_u) | %.d $$(@D)/
+	$(info	CC		$@)
+	for opt in g 0 1 2 s 3 fast; do \
+	$(CC) $(CPPFLAGS) $(CFLAGS) -O$$opt -S -o $*.O$$opt.s $*.O$$opt.i; \
+	done
+	$(CC) $(CPPFLAGS) $(CFLAGS)         -S -o $@          $<
+
+$(_TU_o): %.c.o: %.c.s %.h.gch $(mk) $(_LIB_pc_u) | %.c.d $$(@D)/
+	$(info	CC (as)		$@)
+	for opt in g 0 1 2 s 3 fast; do \
+	$(CC) $(CPPFLAGS) $(CFLAGS) -O$$opt -c -o $*.c.O$$opt.o $*.c.O$$opt.s; \
+	done
+	$(CC) $(CPPFLAGS) $(CFLAGS)         -c -o $@            $<
+
+
+.PHONY: build-obj-pch
+build-obj-pch: $(_TU_gch)
+	@:
+
+.PHONY: build-obj-cpp
+build-obj-cpp: $(_TU_i)
+	@:
+
+.PHONY: build-obj-cc
+build-obj-cc: $(_TU_s)
+	@:
+
+.PHONY: build-obj-as
+build-obj-as: $(_TU_o)
+	@:
+
+
+.PHONY: build-obj
+build-obj: build-obj-as
+	@:
+
+
+endif  # include guard