mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 15:03:53 +02:00

Linus Torvalds 8630c59e99 Kbuild updates for v6.16

- Add support for the EXPORT_SYMBOL_GPL_FOR_MODULES() macro, which exports a
    symbol only to specified modules
 
  - Improve ABI handling in gendwarfksyms
 
  - Forcibly link lib-y objects to vmlinux even if CONFIG_MODULES=n
 
  - Add checkers for redundant or missing <linux/export.h> inclusion
 
  - Deprecate the extra-y syntax
 
  - Fix a genksyms bug when including enum constants from *.symref files
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Merge tag 'kbuild-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Add support for the EXPORT_SYMBOL_GPL_FOR_MODULES() macro, which
   exports a symbol only to specified modules

 - Improve ABI handling in gendwarfksyms

 - Forcibly link lib-y objects to vmlinux even if CONFIG_MODULES=n

 - Add checkers for redundant or missing <linux/export.h> inclusion

 - Deprecate the extra-y syntax

 - Fix a genksyms bug when including enum constants from *.symref files

* tag 'kbuild-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (28 commits)
  genksyms: Fix enum consts from a reference affecting new values
  arch: use always-$(KBUILD_BUILTIN) for vmlinux.lds
  kbuild: set y instead of 1 to KBUILD_{BUILTIN,MODULES}
  efi/libstub: use 'targets' instead of extra-y in Makefile
  module: make __mod_device_table__* symbols static
  scripts/misc-check: check unnecessary #include <linux/export.h> when W=1
  scripts/misc-check: check missing #include <linux/export.h> when W=1
  scripts/misc-check: add double-quotes to satisfy shellcheck
  kbuild: move W=1 check for scripts/misc-check to top-level Makefile
  scripts/tags.sh: allow to use alternative ctags implementation
  kconfig: introduce menu type enum
  docs: symbol-namespaces: fix reST warning with literal block
  kbuild: link lib-y objects to vmlinux forcibly even when CONFIG_MODULES=n
  tinyconfig: enable CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
  docs/core-api/symbol-namespaces: drop table of contents and section numbering
  modpost: check forbidden MODULE_IMPORT_NS("module:") at compile time
  kbuild: move kbuild syntax processing to scripts/Makefile.build
  Makefile: remove dependency on archscripts for header installation
  Documentation/kbuild: Add new gendwarfksyms kABI rules
  Documentation/kbuild: Drop section numbers
  ...

2025-06-07 10:05:35 -07:00

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SPDX-License-Identifier: GPL-2.0

Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux,intel}.com)

Don't instrument UML-specific code; without this, we may crash when

accessing the instrumentation buffer for the first time from the

kernel.

KCOV_INSTRUMENT := n

CPPFLAGS_vmlinux.lds := -DSTART=$(LDS_START)
-DELF_ARCH=$(LDS_ELF_ARCH)
-DELF_FORMAT=$(LDS_ELF_FORMAT)
$(LDS_EXTRA) always-$(KBUILD_BUILTIN) := vmlinux.lds

obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o
physmem.o process.o ptrace.o reboot.o sigio.o
signal.o sysrq.o time.o tlb.o trap.o
um_arch.o umid.o kmsg_dump.o capflags.o skas/ obj-y += load_file.o

obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o obj-$(CONFIG_GPROF) += gprof_syms.o obj-$(CONFIG_OF) += dtb.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-$(CONFIG_STACKTRACE) += stacktrace.o

USER_OBJS := config.o

include $(srctree)/arch/um/scripts/Makefile.rules

targets := config.c config.tmp capflags.c

Be careful with the below Sed code - sed is pitfall-rich!

We use sed to lower build requirements, for "embedded" builders for instance.

$(obj)/config.tmp: $(objtree)/.config FORCE $(call if_changed,quote1)

quiet_cmd_quote1 = QUOTE $@ cmd_quote1 = sed -e 's/"/\"/g' -e 's/^/"/' -e 's/$$/\n",/'
$< > $@

$(obj)/config.c: $(src)/config.c.in $(obj)/config.tmp FORCE $(call if_changed,quote2)

quiet_cmd_mkcapflags = MKCAP $@ cmd_mkcapflags = $(CONFIG_SHELL) $(src)/../../x86/kernel/cpu/mkcapflags.sh $@ $^

cpufeature = $(src)/../../x86/include/asm/cpufeatures.h vmxfeature = $(src)/../../x86/include/asm/vmxfeatures.h

$(obj)/capflags.c: $(cpufeature) $(vmxfeature) $(src)/../../x86/kernel/cpu/mkcapflags.sh FORCE $(call if_changed,mkcapflags)

quiet_cmd_quote2 = QUOTE $@ cmd_quote2 = sed -e '/CONFIG/{'
-e 's/"CONFIG"//'
-e 'r $(obj)/config.tmp'
-e 'a '
-e '""'
-e '}'
$< > $@

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