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 := $(bounds-file) 11targets := kernel/bounds.s 12 13$(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 21targets += $(timeconst-file) 22 23filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $< 24 25$(timeconst-file): kernel/time/timeconst.bc FORCE 26 $(call filechk,gentimeconst) 27 28##### 29# Generate asm-offsets.h 30 31offsets-file := include/generated/asm-offsets.h 32 33always += $(offsets-file) 34targets += arch/$(SRCARCH)/kernel/asm-offsets.s 35 36arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file) 37 38$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE 39 $(call filechk,offsets,__ASM_OFFSETS_H__) 40 41##### 42# Check for missing system calls 43 44always += missing-syscalls 45targets += missing-syscalls 46 47quiet_cmd_syscalls = CALL $< 48 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) 49 50missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE 51 $(call cmd,syscalls) 52 53##### 54# Check atomic headers are up-to-date 55 56always += old-atomics 57targets += old-atomics 58 59quiet_cmd_atomics = CALL $< 60 cmd_atomics = $(CONFIG_SHELL) $< 61 62old-atomics: scripts/atomic/check-atomics.sh FORCE 63 $(call cmd,atomics) 64 65# Keep these three files during make clean 66no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file) 67