linux-phytec-ti

#

# Kbuild for top-level directory of the kernel

# This file takes care of the following:

# 1) Generate bounds.h

# 2) Generate timeconst.h

# 3) Generate asm-offsets.h (may need bounds.h and timeconst.h)

# 4) Check for missing system calls

# 5) Generate constants.py (may need bounds.h)

​

#####

# 1) Generate bounds.h

​

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

​

always  := $(bounds-file)

targets := kernel/bounds.s

​

# We use internal kbuild rules to avoid the "is up to date" message from make

kernel/bounds.s: kernel/bounds.c FORCE

    $(call if_changed_dep,cc_s_c)

​

$(obj)/$(bounds-file): kernel/bounds.s FORCE

    $(call filechk,offsets,__LINUX_BOUNDS_H__)

​

#####

# 2) Generate timeconst.h

​

timeconst-file := include/generated/timeconst.h

​

targets += $(timeconst-file)

​

quiet_cmd_gentimeconst = GEN     $@

define cmd_gentimeconst

    (echo $(CONFIG_HZ) | bc -q $< ) > $@

endef

define filechk_gentimeconst

    (echo $(CONFIG_HZ) | bc -q $< )

endef

​

$(obj)/$(timeconst-file): kernel/time/timeconst.bc FORCE

    $(call filechk,gentimeconst)

​

#####

# 3) Generate asm-offsets.h

#

​

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

​

always  += $(offsets-file)

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

​

# 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 \

                                      $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE

    $(call if_changed_dep,cc_s_c)

​

$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE

    $(call filechk,offsets,__ASM_OFFSETS_H__)

​

#####

# 4) Check for missing system calls

#

​