8afc66e8d4
- Remove potentially incomplete targets when Kbuid is interrupted by
SIGINT etc. in case GNU Make may miss to do that when stderr is piped
to another program.
- Rewrite the single target build so it works more correctly.
- Fix rpm-pkg builds with V=1.
- List top-level subdirectories in ./Kbuild.
- Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in kallsyms.
- Avoid two different modules in lib/zstd/ having shared code, which
potentially causes building the common code as build-in and modular
back-and-forth.
- Unify two modpost invocations to optimize the build process.
- Remove head-y syntax in favor of linker scripts for placing particular
sections in the head of vmlinux.
- Bump the minimal GNU Make version to 3.82.
- Clean up misc Makefiles and scripts.
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Merge tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Remove potentially incomplete targets when Kbuid is interrupted by
SIGINT etc in case GNU Make may miss to do that when stderr is piped
to another program.
- Rewrite the single target build so it works more correctly.
- Fix rpm-pkg builds with V=1.
- List top-level subdirectories in ./Kbuild.
- Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in
kallsyms.
- Avoid two different modules in lib/zstd/ having shared code, which
potentially causes building the common code as build-in and modular
back-and-forth.
- Unify two modpost invocations to optimize the build process.
- Remove head-y syntax in favor of linker scripts for placing
particular sections in the head of vmlinux.
- Bump the minimal GNU Make version to 3.82.
- Clean up misc Makefiles and scripts.
* tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
docs: bump minimal GNU Make version to 3.82
ia64: simplify esi object addition in Makefile
Revert "kbuild: Check if linker supports the -X option"
kbuild: rebuild .vmlinux.export.o when its prerequisite is updated
kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o
zstd: Fixing mixed module-builtin objects
kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols
kallsyms: take the input file instead of reading stdin
kallsyms: drop duplicated ignore patterns from kallsyms.c
kbuild: reuse mksysmap output for kallsyms
mksysmap: update comment about __crc_*
kbuild: remove head-y syntax
kbuild: use obj-y instead extra-y for objects placed at the head
kbuild: hide error checker logs for V=1 builds
kbuild: re-run modpost when it is updated
kbuild: unify two modpost invocations
kbuild: move vmlinux.o rule to the top Makefile
kbuild: move .vmlinux.objs rule to Makefile.modpost
kbuild: list sub-directories in ./Kbuild
Makefile.compiler: replace cc-ifversion with compiler-specific macros
...
2.5 KiB
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)