Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Avoid 'constexpr', which is a keyword in C23

 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of
   'dt_binding_check'

 - Fix weak references to avoid GOT entries in position-independent code
   generation

 - Convert the last use of 'optional' property in arch/sh/Kconfig

 - Remove support for the 'optional' property in Kconfig

 - Remove support for Clang's ThinLTO caching, which does not work with
   the .incbin directive

 - Change the semantics of $(src) so it always points to the source
   directory, which fixes Makefile inconsistencies between upstream and
   downstream

 - Fix 'make tar-pkg' for RISC-V to produce a consistent package

 - Provide reasonable default coverage for objtool, sanitizers, and
   profilers

 - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.

 - Remove the last use of tristate choice in drivers/rapidio/Kconfig

 - Various cleanups and fixes in Kconfig

* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
  kconfig: use sym_get_choice_menu() in sym_check_prop()
  rapidio: remove choice for enumeration
  kconfig: lxdialog: remove initialization with A_NORMAL
  kconfig: m/nconf: merge two item_add_str() calls
  kconfig: m/nconf: remove dead code to display value of bool choice
  kconfig: m/nconf: remove dead code to display children of choice members
  kconfig: gconf: show checkbox for choice correctly
  kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
  Makefile: remove redundant tool coverage variables
  kbuild: provide reasonable defaults for tool coverage
  modules: Drop the .export_symbol section from the final modules
  kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
  kconfig: use sym_get_choice_menu() in conf_write_defconfig()
  kconfig: add sym_get_choice_menu() helper
  kconfig: turn defaults and additional prompt for choice members into error
  kconfig: turn missing prompt for choice members into error
  kconfig: turn conf_choice() into void function
  kconfig: use linked list in sym_set_changed()
  kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
  kconfig: gconf: remove debug code
  ...

1 files changed, 27 insertions, 17 deletions

diff --git a/Makefile b/Makefile
index 967e97878ecd..77b283d16e73 100644
--- a/Makefile
+++ b/Makefile
@@ -263,7 +263,14 @@ srctree := $(abs_srctree)
 endif
 
 objtree		:= .
+
+VPATH		:=
+
+ifeq ($(KBUILD_EXTMOD),)
+ifdef building_out_of_srctree
 VPATH		:= $(srctree)
+endif
+endif
 
 export building_out_of_srctree srctree objtree VPATH
 
@@ -942,7 +949,6 @@ endif
 ifdef CONFIG_LTO_CLANG
 ifdef CONFIG_LTO_CLANG_THIN
 CC_FLAGS_LTO	:= -flto=thin -fsplit-lto-unit
-KBUILD_LDFLAGS	+= --thinlto-cache-dir=$(extmod_prefix).thinlto-cache
 else
 CC_FLAGS_LTO	:= -flto
 endif
@@ -1248,8 +1254,8 @@ define filechk_version.h
 	echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL)
 endef
 
-$(version_h): PATCHLEVEL := $(or $(PATCHLEVEL), 0)
-$(version_h): SUBLEVEL := $(or $(SUBLEVEL), 0)
+$(version_h): private PATCHLEVEL := $(or $(PATCHLEVEL), 0)
+$(version_h): private SUBLEVEL := $(or $(SUBLEVEL), 0)
 $(version_h): FORCE
 	$(call filechk,version.h)
 
@@ -1403,7 +1409,7 @@ export CHECK_DTBS=y
 endif
 
 ifneq ($(CHECK_DTBS),)
-dtbs_prepare: dt_binding_check
+dtbs_prepare: dt_binding_schemas
 endif
 
 dtbs_check: dtbs
@@ -1422,15 +1428,18 @@ scripts_dtc: scripts_basic
 	$(Q)$(MAKE) $(build)=scripts/dtc
 
 ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),)
-export CHECK_DT_BINDING=y
+export CHECK_DTBS=y
 endif
 
-PHONY += dt_binding_check
-dt_binding_check: scripts_dtc
+PHONY += dt_binding_check dt_binding_schemas
+dt_binding_check: dt_binding_schemas scripts_dtc
+	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings $@
+
+dt_binding_schemas:
 	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
 
 PHONY += dt_compatible_check
-dt_compatible_check: dt_binding_check
+dt_compatible_check: dt_binding_schemas
 	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings $@
 
 # ---------------------------------------------------------------------------
@@ -1477,7 +1486,7 @@ endif # CONFIG_MODULES
 # Directories & files removed with 'make clean'
 CLEAN_FILES += vmlinux.symvers modules-only.symvers \
 	       modules.builtin modules.builtin.modinfo modules.nsdeps \
-	       compile_commands.json .thinlto-cache rust/test \
+	       compile_commands.json rust/test \
 	       rust-project.json .vmlinux.objs .vmlinux.export.c
 
 # Directories & files removed with 'make mrproper'
@@ -1494,7 +1503,7 @@ MRPROPER_FILES += include/config include/generated          \
 
 # clean - Delete most, but leave enough to build external modules
 #
-clean: rm-files := $(CLEAN_FILES)
+clean: private rm-files := $(CLEAN_FILES)
 
 PHONY += archclean vmlinuxclean
 
@@ -1506,7 +1515,7 @@ clean: archclean vmlinuxclean resolve_btfids_clean
 
 # mrproper - Delete all generated files, including .config
 #
-mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
+mrproper: private rm-files := $(MRPROPER_FILES)
 mrproper-dirs      := $(addprefix _mrproper_,scripts)
 
 PHONY += $(mrproper-dirs) mrproper
@@ -1626,10 +1635,11 @@ help:
 	@echo  ''
 	@$(if $(dtstree), \
 		echo 'Devicetree:'; \
-		echo '* dtbs             - Build device tree blobs for enabled boards'; \
-		echo '  dtbs_install     - Install dtbs to $(INSTALL_DTBS_PATH)'; \
-		echo '  dt_binding_check - Validate device tree binding documents'; \
-		echo '  dtbs_check       - Validate device tree source files';\
+		echo '* dtbs               - Build device tree blobs for enabled boards'; \
+		echo '  dtbs_install       - Install dtbs to $(INSTALL_DTBS_PATH)'; \
+		echo '  dt_binding_check   - Validate device tree binding documents and examples'; \
+		echo '  dt_binding_schema  - Build processed device tree binding schemas'; \
+		echo '  dtbs_check         - Validate device tree source files';\
 		echo '')
 
 	@echo 'Userspace tools targets:'
@@ -1782,8 +1792,8 @@ compile_commands.json: $(extmod_prefix)compile_commands.json
 PHONY += compile_commands.json
 
 clean-dirs := $(KBUILD_EXTMOD)
-clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \
-	$(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache
+clean: private rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \
+	$(KBUILD_EXTMOD)/compile_commands.json
 
 PHONY += prepare
 # now expand this into a simple variable to reduce the cost of shell evaluations