xref: /linux/Kbuild (revision 5f2fb52f)
1# SPDX-License-Identifier: GPL-2.0
2#
3# Kbuild for top-level directory of the kernel
4
5#####
6# Generate bounds.h
7
8bounds-file := include/generated/bounds.h
9
10always-y := $(bounds-file)
11targets := kernel/bounds.s
12
13$(bounds-file): kernel/bounds.s FORCE
14	$(call filechk,offsets,__LINUX_BOUNDS_H__)
15
16#####
17# Generate timeconst.h
18
19timeconst-file := include/generated/timeconst.h
20
21filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
22
23$(timeconst-file): kernel/time/timeconst.bc FORCE
24	$(call filechk,gentimeconst)
25
26#####
27# Generate asm-offsets.h
28
29offsets-file := include/generated/asm-offsets.h
30
31always-y += $(offsets-file)
32targets += arch/$(SRCARCH)/kernel/asm-offsets.s
33
34arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
35
36$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
37	$(call filechk,offsets,__ASM_OFFSETS_H__)
38
39#####
40# Check for missing system calls
41
42always-y += missing-syscalls
43
44quiet_cmd_syscalls = CALL    $<
45      cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
46
47missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
48	$(call cmd,syscalls)
49
50#####
51# Check atomic headers are up-to-date
52
53always-y += old-atomics
54
55quiet_cmd_atomics = CALL    $<
56      cmd_atomics = $(CONFIG_SHELL) $<
57
58old-atomics: scripts/atomic/check-atomics.sh FORCE
59	$(call cmd,atomics)
60