Commit 9dffecc1 authored Mar 04, 2020 by Masahiro Yamada

kbuild: allow to run dt_binding_check without kernel configuration



The dt_binding_check target is located outside of the
'ifneq ($(dtstree),) ... endif' block.

So, you can run 'make dt_binding_check' on any architecture.
This makes a perfect sense because the dt-schema is arch-agnostic.

The only one problem I see is that scripts/dtc/dtc is not always built.
For example, ARCH=x86 defconfig does not define CONFIG_DTC. Kbuild
descends into scripts/dtc/ with doing nothing. Then, it fails to build
*.example.dt.yaml files.

Let's build scripts/dtc/dtc forcibly when running dt_binding_check.

The dt-schema does not depend on any CONFIG option either, so you
should be able to run dt_binding_check without the .config file.

Going forward, you can directly run 'make dt_binding_check' in a
pristine source tree.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>

parent e10c4321

Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -255,7 +255,7 @@ clean-targets := %clean mrproper cleandocs
		no-dot-config-targets := $(clean-targets) \
		cscope gtags TAGS tags help% %docs check% coccicheck \
		$(version_h) headers headers_% archheaders archscripts \
		%asm-generic kernelversion %src-pkg
		%asm-generic kernelversion %src-pkg dt_binding_check
		no-sync-config-targets := $(no-dot-config-targets) install %install \
		kernelrelease
		single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/

scripts/dtc/Makefile

+3 −2

Original line number	Diff line number	Diff line
		@@ -2,7 +2,8 @@
		# scripts/dtc makefile

		hostprogs := dtc
		always-$(CONFIG_DTC) := $(hostprogs)
		always-$(CONFIG_DTC) += $(hostprogs)
		always-$(CHECK_DT_BINDING) += $(hostprogs)

		dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
		srcpos.o checks.o util.o

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