Commit 5b67fbfc authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'kbuild-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild 

Pull Kbuild updates from Masahiro Yamada:
 "Build system:

   - add CONFIG_UNUSED_KSYMS_WHITELIST, which will be useful to define a
     fixed set of export symbols for Generic Kernel Image (GKI)

   - allow to run 'make dt_binding_check' without .config

   - use full schema for checking DT examples in *.yaml files

   - make modpost fail for missing MODULE_IMPORT_NS(), which makes more
     sense because we know the produced modules are never loadable

   - Remove unused 'AS' variable

  Kconfig:

   - sanitize DEFCONFIG_LIST, and remove ARCH_DEFCONFIG from Kconfig
     files

   - relax the 'imply' behavior so that symbols implied by 'y' can
     become 'm'

   - make 'imply' obey 'depends on' in order to make 'imply' really weak

  Misc:

   - add documentation on building the kernel with Clang/LLVM

   - revive __HAVE_ARCH_STRLEN for 32bit sparc to use optimized strlen()

   - fix warning from deb-pkg builds when CONFIG_DEBUG_INFO=n

   - various script and Makefile cleanups"

* tag 'kbuild-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
  Makefile: Update kselftest help information
  kbuild: deb-pkg: fix warning when CONFIG_DEBUG_INFO is unset
  kbuild: add outputmakefile to no-dot-config-targets
  kbuild: remove AS variable
  net: wan: wanxl: refactor the firmware rebuild rule
  net: wan: wanxl: use $(M68KCC) instead of $(M68KAS) for rebuilding firmware
  net: wan: wanxl: use allow to pass CROSS_COMPILE_M68k for rebuilding firmware
  kbuild: add comment about grouped target
  kbuild: add -Wall to KBUILD_HOSTCXXFLAGS
  kconfig: remove unused variable in qconf.cc
  sparc: revive __HAVE_ARCH_STRLEN for 32bit sparc
  kbuild: refactor Makefile.dtbinst more
  kbuild: compute the dtbs_install destination more simply
  Makefile: disallow data races on gcc-10 as well
  kconfig: make 'imply' obey the direct dependency
  kconfig: allow symbols implied by y to become m
  net: drop_monitor: use IS_REACHABLE() to guard net_dm_hw_report()
  modpost: return error if module is missing ns imports and MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n
  modpost: rework and consolidate logging interface
  kbuild: allow to run dt_binding_check without kernel configuration
  ...
parents a1629843 e51d8dac

Documentation/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -2,7 +2,8 @@ 
# Makefile for Sphinx documentation

#



subdir-y := devicetree/bindings/

# for cleaning

subdir- := devicetree/bindings



# Check for broken documentation file references

ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)

Documentation/devicetree/bindings/.gitignore

+1 −1
Original line number Diff line number Diff line 
*.example.dts

processed-schema.yaml
 
processed-schema*.yaml

Documentation/devicetree/bindings/Makefile

+20 −12
Original line number Diff line number Diff line
@@ -2,7 +2,6 @@ 
DT_DOC_CHECKER ?= dt-doc-validate

DT_EXTRACT_EX ?= dt-extract-example

DT_MK_SCHEMA ?= dt-mk-schema

DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)



quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)

      cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
@@ -11,26 +10,35 @@ quiet_cmd_chk_binding = CHKDT $(patsubst $(srctree)/%,%,$<) 
$(obj)/%.example.dts: $(src)/%.yaml FORCE

	$(call if_changed,chk_binding)



DT_TMP_SCHEMA := processed-schema.yaml

# Use full schemas when checking %.example.dts

DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml



quiet_cmd_mk_schema = SCHEMA  $@

      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)



DT_DOCS = $(shell \

DT_DOCS = $(addprefix $(src)/, \

	$(shell \

	cd $(srctree)/$(src) && \

	find * \( -name '*.yaml' ! \

		-name $(DT_TMP_SCHEMA) ! \

		-name 'processed-schema*' ! \

		-name '*.example.dt.yaml' \) \

	)

	))



DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))

DT_SCHEMA_FILES ?= $(DT_DOCS)



ifeq ($(CHECK_DTBS),)

extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))

extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))

endif

extra-$(CHECK_DT_BINDING) += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))

extra-$(CHECK_DT_BINDING) += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))

extra-$(CHECK_DT_BINDING) += processed-schema-examples.yaml



$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE

override DTC_FLAGS := \

	-Wno-avoid_unnecessary_addr_size \

	-Wno-graph_child_address



$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE

	$(call if_changed,mk_schema)



$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u

$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE

	$(call if_changed,mk_schema)



extra-y += $(DT_TMP_SCHEMA)
 
extra-y += processed-schema.yaml

Documentation/devicetree/writing-schema.rst

+4 −0
Original line number Diff line number Diff line
@@ -147,6 +147,10 @@ Note that ``dtbs_check`` will skip any binding schema files with errors. It is 
necessary to use ``dt_binding_check`` to get all the validation errors in the

binding schema files.



It is possible to run both in a single command::



    make dt_binding_check dtbs_check



It is also possible to run checks with a single schema file by setting the

``DT_SCHEMA_FILES`` variable to a specific schema file.

Documentation/kbuild/index.rst

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ Kernel Build System 
    issues

    reproducible-builds

    gcc-plugins

    llvm



.. only::  subproject and html

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