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Rob Herring 4f0e3a57d6 kbuild: Add support for DT binding schema checks

This adds the build infrastructure for checking DT binding schema
documents and validating dts files using the binding schema.

Check DT binding schema documents:
make dt_binding_check

Build dts files and check using DT binding schema:
make dtbs_check

Optionally, DT_SCHEMA_FILES can be passed in with a schema file(s) to
use for validation. This makes it easier to find and fix errors
generated by a specific schema.

Currently, the validation targets are separate from a normal build to
avoid a hard dependency on the external DT schema project and because
there are lots of warnings generated.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-doc@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

2018-12-13 09:41:32 -06:00

923 B

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SPDX-License-Identifier: GPL-2.0

scripts/dtc makefile

hostprogs-$(CONFIG_DTC) := dtc always := $(hostprogs-y)

dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o
srcpos.o checks.o util.o dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o

Source files need to get at the userspace version of libfdt_env.h to compile

HOST_EXTRACFLAGS := -I$(src)/libfdt

ifeq ($(wildcard /usr/include/yaml.h),) ifneq ($(CHECK_DTBS),) $(error dtc needs libyaml for DT schema validation support.
Install the necessary libyaml development package.) endif HOST_EXTRACFLAGS += -DNO_YAML else dtc-objs += yamltree.o HOSTLDLIBS_dtc := -lyaml endif

Generated files need one more search path to include headers in source tree

HOSTCFLAGS_dtc-lexer.lex.o := -I$(src) HOSTCFLAGS_dtc-parser.tab.o := -I$(src)

dependencies on generated files need to be listed explicitly

$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h

923 B Raw Blame History