embox

image2.mk
194 строки · 6.2 Кб
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#
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#   Date: Jun 22, 2012
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# Author: Eldar Abusalimov
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#
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ifeq ($(STAGE),1)
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embox_o   := $(OBJ_DIR)/embox.o
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else
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embox_o   := $(OBJ_DIR)/embox-2.o
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$(embox_o) : $(OBJ_DIR)/embox.o
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endif
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image_lds := $(OBJ_DIR)/mk/image.lds
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.PHONY : all FORCE
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all : $(embox_o) $(image_lds)
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FORCE :
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include mk/image_lib.mk
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include $(MKGEN_DIR)/build.mk
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include mk/flags.mk # It must be included after a user-defined config.
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.SECONDEXPANSION:
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include $(MKGEN_DIR)/include.mk
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include $(__include_image)
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include $(__include_initfs)
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include $(__include)
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initfs_cp_prerequisites = $(src_file) $(common_prereqs)
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cp_T_if_supported := \
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	$(shell $(CP) --version 2>&1 | grep -l GNU >/dev/null && echo -T)
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# This rule is necessary because otherwise, when considering a rule for
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# creating the $(ROOTFS_DIR) directory (required through $(common_prereqs)
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# using the secondarily-expanded order-only '| $(@D)/.' prerequisite),
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# the '$(ROOTFS_DIR)/%' rule takes precedence over the proper '%/.' one, since
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# the former needs a shorter stem ('.') than the latter ('build/.../rootfs').
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# This is reproduced only on GNU Make >= 3.82, because of the change in how
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# implicit rule search works in Make.
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$(ROOTFS_DIR)/. :
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	@mkdir -p $@
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$(ROOTFS_DIR)/%/. :
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	@mkdir -p $@
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$(ROOTFS_DIR)/% :
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	$(CP) -r $(cp_T_if_supported) $(src_file) $@$(if \
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		$(and $(chmod),$(findstring $(chmod),'')),,;chmod $(chmod) $@)
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	@touch $@ # workaround when copying directories
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	@find $@ -name .gitkeep -type f -print0 | xargs -0 rm -rf
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fmt_line = $(addprefix \$(\n)$(\t)$(\t),$1)
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initfs_prerequisites = $(cpio_files) \
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	$(wildcard $(USER_ROOTFS_DIR) $(USER_ROOTFS_DIR)/*) $(common_prereqs)
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$(ROOTFS_IMAGE) :
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	@mkdir -p $(ROOTFS_DIR)
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	cd $(ROOTFS_DIR) \
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		&& find * -depth -print | $(CPIO) -L --quiet -H newc -o -O $(abspath $@)
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	if [ -d $(USER_ROOTFS_DIR) ]; \
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	then \
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		cd $(USER_ROOTFS_DIR) \
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			&& find * -depth -print | $(CPIO) -L --quiet -H newc -o -A -O $(abspath $@); \
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	fi
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	@FILES=`find $(cpio_files) $(USER_ROOTFS_DIR)/* -depth -print 2>/dev/null`; \
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	{                                            \
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		printf '$(ROOTFS_IMAGE):';               \
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		for dep in $$FILES;                      \
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			do printf ' \\\n\t%s' "$$dep"; done; \
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		printf '\n';                             \
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		for dep in $$FILES;                      \
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			do printf '\n%s:\n' "$$dep"; done;   \
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	} > $@.d
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-include $(ROOTFS_IMAGE).d
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#XXX
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$(OBJ_DIR)/src/fs/driver/initfs/initfs_cpio.o : $(ROOTFS_IMAGE)
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ifdef __REBUILD_ROOTFS
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initfs_cp_prerequisites += FORCE
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initfs_prerequisites    += FORCE
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endif
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# Module-level rules.
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module_prereqs = $(o_files) $(a_files) $(common_prereqs)
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# Return sections like .bss, .bss._something, etc. But preserve .bss..something
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# and .bss.embox.something since it is used for Embox's internal purpuses.
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# The same is for text, rodata, data sections.
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#
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# 1. File
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# 2. Section name - text, rodata, data, bss
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get_sections = $(filter .$2%, $(filter-out .$2..% .$2.embox%, $(shell $(OBJDUMP) -h $1)))
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section_in_region = \
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	$(shell grep LDS_SECTION_VMA_$1 $(SRCGEN_DIR)/config.lds.h)
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# 1. File name (objects *.o or libraries *.a)
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# 2. Section name - text, rodata, data, bss
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# 3. Name of section specified with @LinkerSection annonation
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rename_section = \
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	$(if $(and $3,$(call section_in_region,$3)), \
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		$(foreach section, $(call get_sections,$1,$2), \
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			$(section)=.$3.$(section).module.$(module_id)), \
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		$(foreach section, $(call get_sections,$1,$2), \
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			$(section)=$(section).module.$(module_id)) \
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	)
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# Here we also rename .ARM.exidx section because some ARM none-eabi
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# compilers crash with Seg Fault for some reason.
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$(OBJ_DIR)/module/% : objcopy_options = \
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	$(patsubst %, --rename-section %, \
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		$(sort $(foreach f,$(o_files) $(a_files), \
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			$(call rename_section,$f,text,$(linker_section_text)) \
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			$(call rename_section,$f,rodata,$(linker_section_rodata)) \
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			$(call rename_section,$f,data,$(linker_section_data)) \
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			$(call rename_section,$f,bss,$(linker_section_bss)) \
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			$(call rename_section,$f,ARM.exidx,$(linker_section_arm_exidx)) \
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			$(call rename_section,$f,ARM.extab,$(linker_section_arm_extab)) \
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	)))
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#
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# Execv segfault workaround: Due to possibly very long objcopy_options
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# we should to pass objcopy_options partially. First 10000 options,
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# then next 10000 options and so on.
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#
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# 1. objcopy options
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# 2. File for objcopy
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#
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do_objcopy = \
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	$(eval tmp_file=$2.objcopy_options.txt) \
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	$(foreach i,$(shell seq 1 10000 $(words $1)), \
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		$(if $(wordlist $(i),$(words $1),$1), \
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			$(file >>$(tmp_file), $(wordlist 1,10000,$(wordlist $(i),$(words $1),$1))) \
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		) \
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	) \
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	$(EXTERNAL_MAKE_FLAGS) $(abspath $(ROOT_DIR))/mk/objcopy_helper.sh $(tmp_file) $2; \
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	$(RM) $(tmp_file)
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ar_prerequisites = $(module_prereqs)
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$(OBJ_DIR)/module/%.a : mk/arhelper.mk
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	@$(MAKE) -f mk/arhelper.mk TARGET='$@' \
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		AR='$(AR)' ARFLAGS='$(ARFLAGS)' \
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		A_FILES='$(a_files)' \
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		O_FILES='$(o_files)' \
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		APP_ID='$(is_app)';
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	@$(call do_objcopy, $(objcopy_options), $@)
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ld_prerequisites = $(module_prereqs)
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obj_build=$(if $(strip $(value mod_postbuild)),$@.build.o,$@)
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obj_postbuild=$@
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$(OBJ_DIR)/module/%.o :
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	$(LD) -r -o $(obj_build) $(ldflags) $(call fmt_line,$(o_files) \
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            $(if $(a_files),--whole-archive $(a_files) --no-whole-archive))
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	@$(if $(module_id),$(call do_objcopy, $(objcopy_options), $(obj_build)))
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	$(mod_postbuild)
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# Here goes image creation rules...
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#
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$(embox_o): ldflags_all = $(LDFLAGS) \
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		$(call fmt_line,$(call ld_scripts_flag,$(ld_scripts)))
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$(embox_o):
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	mkdir -p $(OBJ_DIR)/mk;
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	$(ROOT_DIR)/mk/gen_buildinfo.sh > $(OBJ_DIR)/mk/buildinfo.ld;
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	$(LD) -r $(ldflags_all) \
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		$(call fmt_line,$(ld_objs)) \
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		--start-group \
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		$(call fmt_line,$(ld_libs)) \
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		--end-group \
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	--cref -Map $@.map \
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	-o $@
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stages := $(wordlist 1,$(STAGE),1 2)
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image_prereqs = $(ld_scripts) $(ld_objs) $(ld_libs) $(common_prereqs)
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$(embox_o) : $$(image_prereqs)
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$(embox_o) : mk_file = $(__image_mk_file)
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$(embox_o) : ld_scripts = $(__image_ld_scripts1) # TODO check this twice
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$(embox_o) : ld_objs = $(foreach s,$(stages),$(__image_ld_objs$s))
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$(embox_o) : ld_libs = $(foreach s,$(stages),$(__image_ld_libs$s))
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$(image_lds) : $$(common_prereqs)
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$(image_lds) : flags_before :=
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$(image_lds) : flags = \
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		$(addprefix -include ,$(wildcard \
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			$(SRC_DIR)/arch/$(ARCH)/embox.lds.S \
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			$(if $(value PLATFORM), \
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				$(PLATFORM_DIR)/$(PLATFORM)/arch/$(ARCH)/platform.lds.S)))
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-include $(image_lds).d
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