zephyr/Kbuild

# vim: filetype=make

define filechk_configs.c
	(echo "/* file is auto-generated, do not modify ! */"; \
	echo; \
	echo "#include <toolchain.h>"; \
	echo; \
	echo "GEN_ABS_SYM_BEGIN (_ConfigAbsSyms)"; \
	echo; \
	cat $(CURDIR)/include/generated/autoconf.h | sed \
	's/".*"/1/' | awk  \
	'/#define/{printf "GEN_ABSOLUTE_SYM(%s, %s);\n", $$2, $$3}'; \
	echo; \
	echo "GEN_ABS_SYM_END";)
endef

misc/generated/configs.c: include/config/auto.conf FORCE
	$(call filechk,configs.c)

targets := misc/generated/configs.c
targets += include/generated/offsets.h


always := misc/generated/configs.c
always += include/generated/offsets.h

define rule_cc_o_c_1
	$(call echo-cmd,cc_o_c_1) $(cmd_cc_o_c_1);
endef

cmd_cc_o_c_1 = $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ZEPHYRINCLUDE) -c -o $@ $<

arch/$(ARCH)/core/offsets/offsets.o: arch/$(ARCH)/core/offsets/offsets.c $(KCONFIG_CONFIG) \
				include/generated/generated_dts_board.h
	$(Q)mkdir -p $(dir $@)
	$(call if_changed,cc_o_c_1)


define offsetchk
	$(Q)set -e;                                                \
	$(kecho) '  CHK     $@';                                   \
	mkdir -p $(dir $@);                                        \
	$(srctree)/scripts/gen_offset_header.py -i $(1) -o $@.tmp; \
	if [ -r $@ ] && cmp -s $@ $@.tmp; then                     \
	rm -f $@.tmp;                                              \
	else                                                       \
	$(kecho) '  UPD     $@';                                   \
	mv -f $@.tmp $@;                                           \
	fi
endef

include/generated/offsets.h: arch/$(ARCH)/core/offsets/offsets.o \
			     include/config/auto.conf FORCE
	$(call offsetchk,arch/$(ARCH)/core/offsets/offsets.o)