LXR linux/Kbuild

   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