1 # SPDX-License-Identifier: GPL-2.0
3 # Kbuild for top-level directory of the kernel
8 bounds-file := include/generated/bounds.h
10 always := $(bounds-file)
11 targets := kernel/bounds.s
13 $(bounds-file): kernel/bounds.s FORCE
14 $(call filechk,offsets,__LINUX_BOUNDS_H__)
17 # Generate timeconst.h
19 timeconst-file := include/generated/timeconst.h
21 targets += $(timeconst-file)
23 filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
25 $(timeconst-file): kernel/time/timeconst.bc FORCE
26 $(call filechk,gentimeconst)
29 # Generate asm-offsets.h
31 offsets-file := include/generated/asm-offsets.h
33 always += $(offsets-file)
34 targets += arch/$(SRCARCH)/kernel/asm-offsets.s
36 arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
38 $(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
39 $(call filechk,offsets,__ASM_OFFSETS_H__)
42 # Check for missing system calls
44 always += missing-syscalls
45 targets += missing-syscalls
47 quiet_cmd_syscalls = CALL $<
48 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
50 missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
54 # Check atomic headers are up-to-date
57 targets += old-atomics
59 quiet_cmd_atomics = CALL $<
60 cmd_atomics = $(CONFIG_SHELL) $<
62 old-atomics: scripts/atomic/check-atomics.sh FORCE
65 # Keep these three files during make clean
66 no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file)