1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # 2 #
3 # Kbuild for top-level directory of the kernel 3 # Kbuild for top-level directory of the kernel
4 4
5 # Prepare global headers and check sanity befo 5 # Prepare global headers and check sanity before descending into sub-directories
6 # -------------------------------------------- 6 # ---------------------------------------------------------------------------
7 7
8 # Generate bounds.h 8 # Generate bounds.h
9 9
10 bounds-file := include/generated/bounds.h 10 bounds-file := include/generated/bounds.h
11 11
12 targets := kernel/bounds.s 12 targets := kernel/bounds.s
13 13
14 $(bounds-file): kernel/bounds.s FORCE 14 $(bounds-file): kernel/bounds.s FORCE
15 $(call filechk,offsets,__LINUX_BOUNDS_ 15 $(call filechk,offsets,__LINUX_BOUNDS_H__)
16 16
17 # Generate timeconst.h 17 # Generate timeconst.h
18 18
19 timeconst-file := include/generated/timeconst. 19 timeconst-file := include/generated/timeconst.h
20 20
21 filechk_gentimeconst = echo $(CONFIG_HZ) | bc 21 filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
22 22
23 $(timeconst-file): kernel/time/timeconst.bc FO 23 $(timeconst-file): kernel/time/timeconst.bc FORCE
24 $(call filechk,gentimeconst) 24 $(call filechk,gentimeconst)
25 25
26 # Generate asm-offsets.h 26 # Generate asm-offsets.h
27 27
28 offsets-file := include/generated/asm-offsets. 28 offsets-file := include/generated/asm-offsets.h
29 29
30 targets += arch/$(SRCARCH)/kernel/asm-offsets. 30 targets += arch/$(SRCARCH)/kernel/asm-offsets.s
31 31
32 arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeco 32 arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
33 33
34 $(offsets-file): arch/$(SRCARCH)/kernel/asm-of 34 $(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
35 $(call filechk,offsets,__ASM_OFFSETS_H 35 $(call filechk,offsets,__ASM_OFFSETS_H__)
36 36
37 # Check for missing system calls 37 # Check for missing system calls
38 38
39 quiet_cmd_syscalls = CALL $< 39 quiet_cmd_syscalls = CALL $<
40 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) 40 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
41 41
42 PHONY += missing-syscalls 42 PHONY += missing-syscalls
43 missing-syscalls: scripts/checksyscalls.sh $(o 43 missing-syscalls: scripts/checksyscalls.sh $(offsets-file)
44 $(call cmd,syscalls) 44 $(call cmd,syscalls)
45 45
46 # Check the manual modification of atomic head 46 # Check the manual modification of atomic headers
47 47
48 quiet_cmd_check_sha1 = CHKSHA1 $< 48 quiet_cmd_check_sha1 = CHKSHA1 $<
49 cmd_check_sha1 = \ 49 cmd_check_sha1 = \
50 if ! command -v sha1sum >/dev/null; th 50 if ! command -v sha1sum >/dev/null; then \
51 echo "warning: cannot check th 51 echo "warning: cannot check the header due to sha1sum missing"; \
52 exit 0; \ 52 exit 0; \
53 fi; \ 53 fi; \
54 if [ "$$(sed -n '$$s:// ::p' $<)" != \ 54 if [ "$$(sed -n '$$s:// ::p' $<)" != \
55 "$$(sed '$$d' $< | sha1sum | sed 55 "$$(sed '$$d' $< | sha1sum | sed 's/ .*//')" ]; then \
56 echo "error: $< has been modif 56 echo "error: $< has been modified." >&2; \
57 exit 1; \ 57 exit 1; \
58 fi; \ 58 fi; \
59 touch $@ 59 touch $@
60 60
61 atomic-checks += $(addprefix $(obj)/.checked-, 61 atomic-checks += $(addprefix $(obj)/.checked-, \
62 atomic-arch-fallback.h \ 62 atomic-arch-fallback.h \
63 atomic-instrumented.h \ 63 atomic-instrumented.h \
64 atomic-long.h) 64 atomic-long.h)
65 65
66 targets += $(atomic-checks) 66 targets += $(atomic-checks)
67 $(atomic-checks): $(obj)/.checked-%: include/l 67 $(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE
68 $(call if_changed,check_sha1) 68 $(call if_changed,check_sha1)
69 69
70 # A phony target that depends on all the prepa 70 # A phony target that depends on all the preparation targets
71 71
72 PHONY += prepare 72 PHONY += prepare
73 prepare: $(offsets-file) missing-syscalls $(at 73 prepare: $(offsets-file) missing-syscalls $(atomic-checks)
74 @: 74 @:
75 75
76 # Ordinary directory descending 76 # Ordinary directory descending
77 # -------------------------------------------- 77 # ---------------------------------------------------------------------------
78 78
79 obj-y += init/ 79 obj-y += init/
80 obj-y += usr/ 80 obj-y += usr/
81 obj-y += arch/$(SRCARCH)/ 81 obj-y += arch/$(SRCARCH)/
82 obj-y += $(ARCH_CORE) 82 obj-y += $(ARCH_CORE)
83 obj-y += kernel/ 83 obj-y += kernel/
84 obj-y += certs/ 84 obj-y += certs/
85 obj-y += mm/ 85 obj-y += mm/
86 obj-y += fs/ 86 obj-y += fs/
87 obj-y += ipc/ 87 obj-y += ipc/
88 obj-y += security/ 88 obj-y += security/
89 obj-y += crypto/ 89 obj-y += crypto/
90 obj-$(CONFIG_BLOCK) += block/ 90 obj-$(CONFIG_BLOCK) += block/
91 obj-$(CONFIG_IO_URING) += io_uring/ 91 obj-$(CONFIG_IO_URING) += io_uring/
92 obj-$(CONFIG_RUST) += rust/ 92 obj-$(CONFIG_RUST) += rust/
93 obj-y += $(ARCH_LIB) 93 obj-y += $(ARCH_LIB)
94 obj-y += drivers/ 94 obj-y += drivers/
95 obj-y += sound/ 95 obj-y += sound/
96 obj-$(CONFIG_SAMPLES) += samples/ 96 obj-$(CONFIG_SAMPLES) += samples/
97 obj-$(CONFIG_NET) += net/ 97 obj-$(CONFIG_NET) += net/
98 obj-y += virt/ 98 obj-y += virt/
99 obj-y += $(ARCH_DRIVERS) 99 obj-y += $(ARCH_DRIVERS)
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