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cos / third_party / kernel / 3265654063acb9af7a134735e634af0a1bbabb93 / . / Kbuild
blob: 464b34a08f51ef9d2ae12e6902c92690b5dfa03b [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1# SPDX-License-Identifier: GPL-2.0
Sam Ravnborg86feeaa2005-09-09 19:28:28 +0200[diff] [blame]2#
3# Kbuild for top-level directory of the kernel
Sam Ravnborg86feeaa2005-09-09 19:28:28 +0200[diff] [blame]4
Masahiro Yamadaed7ceac2022-08-20 18:15:28 +0900[diff] [blame]5# Prepare global headers and check sanity before descending into sub-directories
6# ---------------------------------------------------------------------------
7
Masahiro Yamada01d509a2019-02-19 18:33:03 +0900[diff] [blame]8# Generate bounds.h
Masahiro Yamada39664e22015-01-05 15:57:15 +0900[diff] [blame]9
10bounds-file := include/generated/bounds.h
11
Masahiro Yamada8a58e162015-03-26 20:59:52 +0900[diff] [blame]12targets := kernel/bounds.s
Masahiro Yamada39664e22015-01-05 15:57:15 +0900[diff] [blame]13
Masahiro Yamada11fda142018-12-22 18:50:35 +0900[diff] [blame]14$(bounds-file): kernel/bounds.s FORCE
Michal Marek70a4fd62015-03-11 11:01:01 +0100[diff] [blame]15 $(call filechk,offsets,__LINUX_BOUNDS_H__)
Masahiro Yamada39664e22015-01-05 15:57:15 +0900[diff] [blame]16
Masahiro Yamada01d509a2019-02-19 18:33:03 +0900[diff] [blame]17# Generate timeconst.h
Nicholas Mc Guire0a227982015-05-18 14:19:12 +0200[diff] [blame]18
19timeconst-file := include/generated/timeconst.h
20
Masahiro Yamadaba97df42019-01-03 10:16:54 +0900[diff] [blame]21filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
Nicholas Mc Guire0a227982015-05-18 14:19:12 +0200[diff] [blame]22
Masahiro Yamada11fda142018-12-22 18:50:35 +0900[diff] [blame]23$(timeconst-file): kernel/time/timeconst.bc FORCE
Nicholas Mc Guire0a227982015-05-18 14:19:12 +0200[diff] [blame]24 $(call filechk,gentimeconst)
25
Masahiro Yamada01d509a2019-02-19 18:33:03 +0900[diff] [blame]26# Generate asm-offsets.h
Masahiro Yamada39664e22015-01-05 15:57:15 +0900[diff] [blame]27
28offsets-file := include/generated/asm-offsets.h
29
Masahiro Yamada39664e22015-01-05 15:57:15 +0900[diff] [blame]30targets += arch/$(SRCARCH)/kernel/asm-offsets.s
31
Masahiro Yamada11fda142018-12-22 18:50:35 +0900[diff] [blame]32arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
Sam Ravnborg86feeaa2005-09-09 19:28:28 +0200[diff] [blame]33
Masahiro Yamada11fda142018-12-22 18:50:35 +0900[diff] [blame]34$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
Michal Marek70a4fd62015-03-11 11:01:01 +0100[diff] [blame]35 $(call filechk,offsets,__ASM_OFFSETS_H__)
Sam Ravnborg86feeaa2005-09-09 19:28:28 +0200[diff] [blame]36
Masahiro Yamada01d509a2019-02-19 18:33:03 +0900[diff] [blame]37# Check for missing system calls
Sam Ravnborgc53aeca2007-03-27 22:50:29 +0200[diff] [blame]38
39quiet_cmd_syscalls = CALL $<
David Daney44656fa2011-11-08 10:20:10 -0800[diff] [blame]40 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
Sam Ravnborgc53aeca2007-03-27 22:50:29 +0200[diff] [blame]41
Masahiro Yamadaed7ceac2022-08-20 18:15:28 +0900[diff] [blame]42PHONY += missing-syscalls
43missing-syscalls: scripts/checksyscalls.sh $(offsets-file)
Sam Ravnborgc53aeca2007-03-27 22:50:29 +0200[diff] [blame]44 $(call cmd,syscalls)
Christoph Lameter1cdf25d2008-04-28 02:12:44 -0700[diff] [blame]45
Masahiro Yamadab10fdee2022-08-20 18:15:29 +0900[diff] [blame]46# Check the manual modification of atomic headers
Mark Rutland8d325882018-09-04 11:48:29 +0100[diff] [blame]47
Masahiro Yamadab10fdee2022-08-20 18:15:29 +0900[diff] [blame]48quiet_cmd_check_sha1 = CHKSHA1 $<
49 cmd_check_sha1 = \
50 if ! command -v sha1sum >/dev/null; then \
51 echo "warning: cannot check the header due to sha1sum missing"; \
52 exit 0; \
53 fi; \
54 if [ "$$(sed -n '$$s:// ::p' $<)" != \
55 "$$(sed '$$d' $< | sha1sum | sed 's/ .*//')" ]; then \
56 echo "error: $< has been modified." >&2; \
57 exit 1; \
58 fi; \
59 touch $@
Mark Rutland8d325882018-09-04 11:48:29 +0100[diff] [blame]60
Masahiro Yamadab10fdee2022-08-20 18:15:29 +0900[diff] [blame]61atomic-checks += $(addprefix $(obj)/.checked-, \
62 atomic-arch-fallback.h \
63 atomic-instrumented.h \
64 atomic-long.h)
Mark Rutland8d325882018-09-04 11:48:29 +0100[diff] [blame]65
Masahiro Yamadab10fdee2022-08-20 18:15:29 +0900[diff] [blame]66targets += $(atomic-checks)
67$(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE
68 $(call if_changed,check_sha1)
Masahiro Yamadaed7ceac2022-08-20 18:15:28 +0900[diff] [blame]69
70# A phony target that depends on all the preparation targets
71
72PHONY += prepare
Masahiro Yamadab10fdee2022-08-20 18:15:29 +0900[diff] [blame]73prepare: $(offsets-file) missing-syscalls $(atomic-checks)
Masahiro Yamadaed7ceac2022-08-20 18:15:28 +0900[diff] [blame]74 @:
Masahiro Yamada57501212022-09-25 03:19:10 +0900[diff] [blame]75
76# Ordinary directory descending
77# ---------------------------------------------------------------------------
78
79obj-y += init/
80obj-y += usr/
81obj-y += arch/$(SRCARCH)/
82obj-y += $(ARCH_CORE)
83obj-y += kernel/
84obj-y += certs/
85obj-y += mm/
86obj-y += fs/
87obj-y += ipc/
88obj-y += security/
89obj-y += crypto/
90obj-$(CONFIG_BLOCK) += block/
91obj-$(CONFIG_IO_URING) += io_uring/
Linus Torvalds8afc66e2022-10-10 12:00:45 -0700[diff] [blame]92obj-$(CONFIG_RUST) += rust/
Masahiro Yamada57501212022-09-25 03:19:10 +0900[diff] [blame]93obj-y += $(ARCH_LIB)
94obj-y += drivers/
95obj-y += sound/
96obj-$(CONFIG_SAMPLES) += samples/
97obj-$(CONFIG_NET) += net/
98obj-y += virt/
99obj-y += $(ARCH_DRIVERS)