Git Repo - linux.git/blame_incremental

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Commit	Line	Data
	1	#
	2	# Kbuild for top-level directory of the kernel
	3	# This file takes care of the following:
	4	# 1) Generate bounds.h
	5	# 2) Generate asm-offsets.h (may need bounds.h)
	6	# 3) Check for missing system calls
	7
	8	#####
	9	# 1) Generate bounds.h
	10
	11	bounds-file := include/generated/bounds.h
	12
	13	always := $(bounds-file)
	14	targets := $(bounds-file) kernel/bounds.s
	15
	16	quiet_cmd_bounds = GEN $@
	17	define cmd_bounds
	18	(set -e; \
	19	echo "#ifndef __LINUX_BOUNDS_H__"; \
	20	echo "#define __LINUX_BOUNDS_H__"; \
	21	echo "/*"; \
	22	echo " * DO NOT MODIFY."; \
	23	echo " *"; \
	24	echo " * This file was generated by Kbuild"; \
	25	echo " *"; \
	26	echo " */"; \
	27	echo ""; \
	28	sed -ne $(sed-y) $<; \
	29	echo ""; \
	30	echo "#endif" ) > $@
	31	endef
	32
	33	# We use internal kbuild rules to avoid the "is up to date" message from make
	34	kernel/bounds.s: kernel/bounds.c FORCE
	35	$(Q)mkdir -p $(dir $@)
	36	$(call if_changed_dep,cc_s_c)
	37
	38	$(obj)/$(bounds-file): kernel/bounds.s Kbuild
	39	$(Q)mkdir -p $(dir $@)
	40	$(call cmd,bounds)
	41
	42	#####
	43	# 2) Generate asm-offsets.h
	44	#
	45
	46	offsets-file := include/generated/asm-offsets.h
	47
	48	always += $(offsets-file)
	49	targets += $(offsets-file)
	50	targets += arch/$(SRCARCH)/kernel/asm-offsets.s
	51
	52
	53	# Default sed regexp - multiline due to syntax constraints
	54	define sed-y
	55	"/^->/{s:->#$.$:/ \1 */:; \
	56	s:^->$[^ ]$ [\$$#]$[-0-9]$ $.$:#define \1 \2 /* \3 */:; \
	57	s:^->$[^ ]$ [\$$#]$[^ ]$ $.$:#define \1 \2 /* \3 */:; \
	58	s:->::; p;}"
	59	endef
	60
	61	quiet_cmd_offsets = GEN $@
	62	define cmd_offsets
	63	(set -e; \
	64	echo "#ifndef __ASM_OFFSETS_H__"; \
	65	echo "#define __ASM_OFFSETS_H__"; \
	66	echo "/*"; \
	67	echo " * DO NOT MODIFY."; \
	68	echo " *"; \
	69	echo " * This file was generated by Kbuild"; \
	70	echo " *"; \
	71	echo " */"; \
	72	echo ""; \
	73	sed -ne $(sed-y) $<; \
	74	echo ""; \
	75	echo "#endif" ) > $@
	76	endef
	77
	78	# We use internal kbuild rules to avoid the "is up to date" message from make
	79	arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
	80	$(obj)/$(bounds-file) FORCE
	81	$(Q)mkdir -p $(dir $@)
	82	$(call if_changed_dep,cc_s_c)
	83
	84	$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
	85	$(call cmd,offsets)
	86
	87	#####
	88	# 3) Check for missing system calls
	89	#
	90
	91	always += missing-syscalls
	92	targets += missing-syscalls
	93
	94	quiet_cmd_syscalls = CALL $<
	95	cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
	96
	97	missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
	98	$(call cmd,syscalls)
	99
	100	# Keep these two files during make clean
	101	no-clean-files := $(bounds-file) $(offsets-file)