Blame view
Kbuild
2.24 KB
b24413180
|
1 |
# SPDX-License-Identifier: GPL-2.0 |
86feeaa81
|
2 3 4 |
# # Kbuild for top-level directory of the kernel # This file takes care of the following: |
1cdf25d70
|
5 |
# 1) Generate bounds.h |
0a227985d
|
6 7 8 |
# 2) Generate timeconst.h # 3) Generate asm-offsets.h (may need bounds.h and timeconst.h) # 4) Check for missing system calls |
f197d75fc
|
9 |
# 5) Generate constants.py (may need bounds.h) |
86feeaa81
|
10 |
|
39664e2f3
|
11 12 13 14 15 16 |
##### # 1) Generate bounds.h bounds-file := include/generated/bounds.h always := $(bounds-file) |
8a58e1628
|
17 |
targets := kernel/bounds.s |
39664e2f3
|
18 |
|
1cdf25d70
|
19 20 21 22 |
# 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) |
70a4fd6c5
|
23 24 |
$(obj)/$(bounds-file): kernel/bounds.s FORCE $(call filechk,offsets,__LINUX_BOUNDS_H__) |
1cdf25d70
|
25 26 |
##### |
0a227985d
|
27 28 29 |
# 2) Generate timeconst.h timeconst-file := include/generated/timeconst.h |
0a227985d
|
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 |
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 |
86feeaa81
|
45 |
# |
559df2e02
|
46 |
offsets-file := include/generated/asm-offsets.h |
86feeaa81
|
47 |
|
1cdf25d70
|
48 |
always += $(offsets-file) |
6752ed90d
|
49 |
targets += arch/$(SRCARCH)/kernel/asm-offsets.s |
1cdf25d70
|
50 |
|
86feeaa81
|
51 |
# We use internal kbuild rules to avoid the "is up to date" message from make |
1cdf25d70
|
52 |
arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ |
0a227985d
|
53 |
$(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE |
86feeaa81
|
54 55 |
$(Q)mkdir -p $(dir $@) $(call if_changed_dep,cc_s_c) |
70a4fd6c5
|
56 57 |
$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE $(call filechk,offsets,__ASM_OFFSETS_H__) |
86feeaa81
|
58 |
|
c53aeca05
|
59 |
##### |
0a227985d
|
60 |
# 4) Check for missing system calls |
c53aeca05
|
61 |
# |
5f7efb4c6
|
62 63 |
always += missing-syscalls targets += missing-syscalls |
c53aeca05
|
64 |
quiet_cmd_syscalls = CALL $< |
44656fa03
|
65 |
cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) |
c53aeca05
|
66 |
|
5f7efb4c6
|
67 |
missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE |
c53aeca05
|
68 |
$(call cmd,syscalls) |
1cdf25d70
|
69 |
|
f197d75fc
|
70 71 72 73 74 75 76 77 |
##### # 5) Generate constants for Python GDB integration # extra-$(CONFIG_GDB_SCRIPTS) += build_constants_py build_constants_py: $(obj)/$(timeconst-file) $(obj)/$(bounds-file) @$(MAKE) $(build)=scripts/gdb/linux $@ |
0a227985d
|
78 79 |
# Keep these three files during make clean no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file) |