diff options
Diffstat (limited to 'Kbuild')
| -rw-r--r-- | Kbuild | 99 |
1 files changed, 99 insertions, 0 deletions
@@ -0,0 +1,99 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Kbuild for top-level directory of the kernel + +# Prepare global headers and check sanity before descending into sub-directories +# --------------------------------------------------------------------------- + +# Generate bounds.h + +bounds-file := include/generated/bounds.h + +targets := kernel/bounds.s + +$(bounds-file): kernel/bounds.s FORCE + $(call filechk,offsets,__LINUX_BOUNDS_H__) + +# Generate timeconst.h + +timeconst-file := include/generated/timeconst.h + +filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $< + +$(timeconst-file): kernel/time/timeconst.bc FORCE + $(call filechk,gentimeconst) + +# Generate asm-offsets.h + +offsets-file := include/generated/asm-offsets.h + +targets += arch/$(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__) + +# Check for missing system calls + +quiet_cmd_syscalls = CALL $< + cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) + +PHONY += missing-syscalls +missing-syscalls: scripts/checksyscalls.sh $(offsets-file) + $(call cmd,syscalls) + +# Check the manual modification of atomic headers + +quiet_cmd_check_sha1 = CHKSHA1 $< + cmd_check_sha1 = \ + if ! command -v sha1sum >/dev/null; then \ + echo "warning: cannot check the header due to sha1sum missing"; \ + exit 0; \ + fi; \ + if [ "$$(sed -n '$$s:// ::p' $<)" != \ + "$$(sed '$$d' $< | sha1sum | sed 's/ .*//')" ]; then \ + echo "error: $< has been modified." >&2; \ + exit 1; \ + fi; \ + touch $@ + +atomic-checks += $(addprefix $(obj)/.checked-, \ + atomic-arch-fallback.h \ + atomic-instrumented.h \ + atomic-long.h) + +targets += $(atomic-checks) +$(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE + $(call if_changed,check_sha1) + +# A phony target that depends on all the preparation targets + +PHONY += prepare +prepare: $(offsets-file) missing-syscalls $(atomic-checks) + @: + +# Ordinary directory descending +# --------------------------------------------------------------------------- + +obj-y += init/ +obj-y += usr/ +obj-y += arch/$(SRCARCH)/ +obj-y += $(ARCH_CORE) +obj-y += kernel/ +obj-y += certs/ +obj-y += mm/ +obj-y += fs/ +obj-y += ipc/ +obj-y += security/ +obj-y += crypto/ +obj-$(CONFIG_BLOCK) += block/ +obj-$(CONFIG_IO_URING) += io_uring/ +obj-$(CONFIG_RUST) += rust/ +obj-y += $(ARCH_LIB) +obj-y += drivers/ +obj-y += sound/ +obj-$(CONFIG_SAMPLES) += samples/ +obj-$(CONFIG_NET) += net/ +obj-y += virt/ +obj-y += $(ARCH_DRIVERS) |