[linux-2.6-block.git] / Kbuild

#
# Kbuild for top-level directory of the kernel
# This file takes care of the following:
# 1) Generate bounds.h
# 2) Generate asm-offsets.h (may need bounds.h)
# 3) Check for missing system calls

#####
# 1) Generate bounds.h

bounds-file := include/linux/bounds.h

always  := $(bounds-file)
targets := $(bounds-file) kernel/bounds.s

quiet_cmd_bounds = GEN     $@
define cmd_bounds
	(set -e; \
	 echo "#ifndef __LINUX_BOUNDS_H__"; \
	 echo "#define __LINUX_BOUNDS_H__"; \
	 echo "/*"; \
	 echo " * DO NOT MODIFY."; \
	 echo " *"; \
	 echo " * This file was generated by Kbuild"; \
	 echo " *"; \
	 echo " */"; \
	 echo ""; \
	 sed -ne $(sed-y) $<; \
	 echo ""; \
	 echo "#endif" ) > $@
endef

# We use internal kbuild rules to avoid the "is up to date" message from make
kernel/bounds.s: kernel/bounds.c FORCE
	$(Q)mkdir -p $(dir $@)
	$(call if_changed_dep,cc_s_c)

$(obj)/$(bounds-file): kernel/bounds.s Kbuild
	$(Q)mkdir -p $(dir $@)
	$(call cmd,bounds)

#####
# 2) Generate asm-offsets.h
#

offsets-file := include/asm/asm-offsets.h

always  += $(offsets-file)
targets += $(offsets-file)
targets += arch/$(SRCARCH)/kernel/asm-offsets.s


# Default sed regexp - multiline due to syntax constraints
define sed-y
	"/^->/{s:->#\(.*\):/* \1 */:; \
	s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
	s:->::; p;}"
endef

quiet_cmd_offsets = GEN     $@
define cmd_offsets
	(set -e; \
	 echo "#ifndef __ASM_OFFSETS_H__"; \
	 echo "#define __ASM_OFFSETS_H__"; \
	 echo "/*"; \
	 echo " * DO NOT MODIFY."; \
	 echo " *"; \
	 echo " * This file was generated by Kbuild"; \
	 echo " *"; \
	 echo " */"; \
	 echo ""; \
	 sed -ne $(sed-y) $<; \
	 echo ""; \
	 echo "#endif" ) > $@
endef

# We use internal kbuild rules to avoid the "is up to date" message from make
arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
                                      $(obj)/$(bounds-file) FORCE
	$(Q)mkdir -p $(dir $@)
	$(call if_changed_dep,cc_s_c)

$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
	$(call cmd,offsets)

#####
# 3) Check for missing system calls
#

quiet_cmd_syscalls = CALL    $<
      cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)

PHONY += missing-syscalls
missing-syscalls: scripts/checksyscalls.sh FORCE
	$(call cmd,syscalls)

# Delete all targets during make clean
clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))
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/linux/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/asm/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:^->\([^ ]\) [\$$#]\([^ ]\) \(.\):#define \1 \2 /* \3 */:; \
	57	s:->::; p;}"
	58	endef
	59
	60	quiet_cmd_offsets = GEN $@
	61	define cmd_offsets
	62	(set -e; \
	63	echo "#ifndef __ASM_OFFSETS_H__"; \
	64	echo "#define __ASM_OFFSETS_H__"; \
	65	echo "/*"; \
	66	echo " * DO NOT MODIFY."; \
	67	echo " *"; \
	68	echo " * This file was generated by Kbuild"; \
	69	echo " *"; \
	70	echo " */"; \
	71	echo ""; \
	72	sed -ne $(sed-y) $<; \
	73	echo ""; \
	74	echo "#endif" ) > $@
	75	endef
	76
	77	# We use internal kbuild rules to avoid the "is up to date" message from make
	78	arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
	79	$(obj)/$(bounds-file) FORCE
	80	$(Q)mkdir -p $(dir $@)
	81	$(call if_changed_dep,cc_s_c)
	82
	83	$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
	84	$(call cmd,offsets)
	85
	86	#####
	87	# 3) Check for missing system calls
	88	#
	89
	90	quiet_cmd_syscalls = CALL $<
	91	cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)
	92
	93	PHONY += missing-syscalls
	94	missing-syscalls: scripts/checksyscalls.sh FORCE
	95	$(call cmd,syscalls)
	96
	97	# Delete all targets during make clean
	98	clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))