86 lines
2.0 KiB
Makefile
86 lines
2.0 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Kbuild for top-level directory of the kernel
|
|
# This file takes care of the following:
|
|
# 1) Generate bounds.h
|
|
# 2) Generate timeconst.h
|
|
# 3) Generate asm-offsets.h (may need bounds.h and timeconst.h)
|
|
# 4) Check for missing system calls
|
|
# 5) check atomics headers are up-to-date
|
|
# 6) Generate constants.py (may need bounds.h)
|
|
|
|
#####
|
|
# 1) Generate bounds.h
|
|
|
|
bounds-file := include/generated/bounds.h
|
|
|
|
always := $(bounds-file)
|
|
targets := kernel/bounds.s
|
|
|
|
$(bounds-file): kernel/bounds.s FORCE
|
|
$(call filechk,offsets,__LINUX_BOUNDS_H__)
|
|
|
|
#####
|
|
# 2) Generate timeconst.h
|
|
|
|
timeconst-file := include/generated/timeconst.h
|
|
|
|
targets += $(timeconst-file)
|
|
|
|
filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
|
|
|
|
$(timeconst-file): kernel/time/timeconst.bc FORCE
|
|
$(call filechk,gentimeconst)
|
|
|
|
#####
|
|
# 3) Generate asm-offsets.h
|
|
#
|
|
|
|
offsets-file := include/generated/asm-offsets.h
|
|
|
|
always += $(offsets-file)
|
|
targets += arch/$(SRCARCH)/kernel/asm-offsets.s
|
|
|
|
arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
|
|
|
|
$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
|
|
$(call filechk,offsets,__ASM_OFFSETS_H__)
|
|
|
|
#####
|
|
# 4) Check for missing system calls
|
|
#
|
|
|
|
always += missing-syscalls
|
|
targets += missing-syscalls
|
|
|
|
quiet_cmd_syscalls = CALL $<
|
|
cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
|
|
|
|
missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
|
|
$(call cmd,syscalls)
|
|
|
|
#####
|
|
# 5) Check atomic headers are up-to-date
|
|
#
|
|
|
|
always += old-atomics
|
|
targets += old-atomics
|
|
|
|
quiet_cmd_atomics = CALL $<
|
|
cmd_atomics = $(CONFIG_SHELL) $<
|
|
|
|
old-atomics: scripts/atomic/check-atomics.sh FORCE
|
|
$(call cmd,atomics)
|
|
|
|
#####
|
|
# 6) Generate constants for Python GDB integration
|
|
#
|
|
|
|
extra-$(CONFIG_GDB_SCRIPTS) += build_constants_py
|
|
|
|
build_constants_py: $(timeconst-file) $(bounds-file)
|
|
@$(MAKE) $(build)=scripts/gdb/linux $@
|
|
|
|
# Keep these three files during make clean
|
|
no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file)
|