Commit | Line | Data |
---|---|---|
86feeaa8 SR |
1 | # |
2 | # Kbuild for top-level directory of the kernel | |
3 | # This file takes care of the following: | |
1cdf25d7 | 4 | # 1) Generate bounds.h |
0a227985 NMG |
5 | # 2) Generate timeconst.h |
6 | # 3) Generate asm-offsets.h (may need bounds.h and timeconst.h) | |
7 | # 4) Check for missing system calls | |
86feeaa8 | 8 | |
39664e2f MY |
9 | ##### |
10 | # 1) Generate bounds.h | |
11 | ||
12 | bounds-file := include/generated/bounds.h | |
13 | ||
14 | always := $(bounds-file) | |
8a58e162 | 15 | targets := kernel/bounds.s |
39664e2f | 16 | |
1cdf25d7 CL |
17 | # We use internal kbuild rules to avoid the "is up to date" message from make |
18 | kernel/bounds.s: kernel/bounds.c FORCE | |
19 | $(Q)mkdir -p $(dir $@) | |
20 | $(call if_changed_dep,cc_s_c) | |
21 | ||
70a4fd6c MM |
22 | $(obj)/$(bounds-file): kernel/bounds.s FORCE |
23 | $(call filechk,offsets,__LINUX_BOUNDS_H__) | |
1cdf25d7 CL |
24 | |
25 | ##### | |
0a227985 NMG |
26 | # 2) Generate timeconst.h |
27 | ||
28 | timeconst-file := include/generated/timeconst.h | |
29 | ||
0a227985 NMG |
30 | targets += $(timeconst-file) |
31 | ||
32 | quiet_cmd_gentimeconst = GEN $@ | |
33 | define cmd_gentimeconst | |
34 | (echo $(CONFIG_HZ) | bc -q $< ) > $@ | |
35 | endef | |
36 | define filechk_gentimeconst | |
37 | (echo $(CONFIG_HZ) | bc -q $< ) | |
38 | endef | |
39 | ||
40 | $(obj)/$(timeconst-file): kernel/time/timeconst.bc FORCE | |
41 | $(call filechk,gentimeconst) | |
42 | ||
43 | ##### | |
44 | # 3) Generate asm-offsets.h | |
86feeaa8 SR |
45 | # |
46 | ||
559df2e0 | 47 | offsets-file := include/generated/asm-offsets.h |
86feeaa8 | 48 | |
1cdf25d7 | 49 | always += $(offsets-file) |
6752ed90 | 50 | targets += arch/$(SRCARCH)/kernel/asm-offsets.s |
1cdf25d7 | 51 | |
86feeaa8 | 52 | # We use internal kbuild rules to avoid the "is up to date" message from make |
1cdf25d7 | 53 | arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ |
0a227985 | 54 | $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE |
86feeaa8 SR |
55 | $(Q)mkdir -p $(dir $@) |
56 | $(call if_changed_dep,cc_s_c) | |
57 | ||
70a4fd6c MM |
58 | $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE |
59 | $(call filechk,offsets,__ASM_OFFSETS_H__) | |
86feeaa8 | 60 | |
c53aeca0 | 61 | ##### |
0a227985 | 62 | # 4) Check for missing system calls |
c53aeca0 SR |
63 | # |
64 | ||
5f7efb4c AL |
65 | always += missing-syscalls |
66 | targets += missing-syscalls | |
67 | ||
c53aeca0 | 68 | quiet_cmd_syscalls = CALL $< |
44656fa0 | 69 | cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) |
c53aeca0 | 70 | |
5f7efb4c | 71 | missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE |
c53aeca0 | 72 | $(call cmd,syscalls) |
1cdf25d7 | 73 | |
0a227985 NMG |
74 | # Keep these three files during make clean |
75 | no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file) |