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    Subject[PATCH 5.7 044/244] dt-bindings: fix error in make clean after make dt_binding_check
    Date
    From: Masahiro Yamada <masahiroy@kernel.org>

    [ Upstream commit fa714cf58c7c09a454ff9fda2ee8318591128eb6 ]

    We are having more and more schema files.

    Commit 8b6b80218b01 ("dt-bindings: Fix command line length limit
    calling dt-mk-schema") fixed the 'Argument list too long' error of
    the schema checks, but the same error happens while cleaning too.

    'make clean' after 'make dt_binding_check' fails as follows:

    $ make dt_binding_check
    [ snip ]
    $ make clean
    make[2]: execvp: /bin/sh: Argument list too long
    make[2]: *** [scripts/Makefile.clean:52: __clean] Error 127
    make[1]: *** [scripts/Makefile.clean:66: Documentation/devicetree/bindings] Error 2
    make: *** [Makefile:1763: _clean_Documentation] Error 2

    'make dt_binding_check' generates so many .example.dts, .dt.yaml files,
    which are passed to the 'rm' command when you run 'make clean'.

    I added a small hack to use the 'find' command to clean up most of the
    build artifacts before they are processed by scripts/Makefile.clean

    Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
    Link: https://lore.kernel.org/r/20200625170434.635114-2-masahiroy@kernel.org
    Signed-off-by: Rob Herring <robh@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    Documentation/devicetree/bindings/Makefile | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
    index 7782d99850823..b03d58c6b072f 100644
    --- a/Documentation/devicetree/bindings/Makefile
    +++ b/Documentation/devicetree/bindings/Makefile
    @@ -45,3 +45,8 @@ $(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
    $(call if_changed,mk_schema)

    extra-y += processed-schema.yaml
    +
    +# Hack: avoid 'Argument list too long' error for 'make clean'. Remove most of
    +# build artifacts here before they are processed by scripts/Makefile.clean
    +clean-files = $(shell find $(obj) \( -name '*.example.dts' -o \
    + -name '*.example.dt.yaml' \) -delete 2>/dev/null)
    --
    2.25.1


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