Messages in this thread | | | From | Masahiro Yamada <> | Date | Wed, 22 Apr 2020 02:36:36 +0900 | Subject | Re: [PATCH v2 1/2] kbuild: Always validate DT binding examples |
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Hi Laurent,
On Tue, Apr 21, 2020 at 10:47 PM Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote:
> HOSTLD scripts/dtc/dtc > CHKDT Documentation/devicetree/bindings/arm/psci.yaml > make[2]: execvp: /bin/sh: Argument list too long > make[2]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Documentation/devicetree/bindings/Makefile:38: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127 > make[1]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Makefile:1300: dt_binding_check] Error 2 > make[1]: Leaving directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86' > make: *** [Makefile:180: sub-make] Error 2 > > It seems to only fail with out of tree builds (O=...). I expect that > failures will become more common the more YAML bindings we have, even > without long directory names.
Indeed. This will be a common problem sooner or later.
Rob already suggested a solution.
Another way is to use a pipe.
See the following code in scripts/Makefile.modpost
# Read out modules.order instead of expanding $(modules) to pass in modpost. # Otherwise, allmodconfig would fail with "Argument list too long". quiet_cmd_modpost = MODPOST $(words $(modules)) modules cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
The same issue happens for modpost because allmodconfig floods the command line.
-- Best Regards Masahiro Yamada
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