Re: [PATCH v2 2/2] kbuild: handle excessively long argument lists

[jjohnson@codeaurora.org]

On 2021-01-14 17:12, Masahiro Yamada wrote:
> On Fri, Jan 15, 2021 at 6:50 AM Jeff Johnson <jjohnson@codeaurora.org> 
> wrote:
>> 
>> From: Mahesh Kumar Kalikot Veetil <mkalikot@codeaurora.org>
>> 
>> Modules with a large number of compilation units may be
>> exceeding AR and LD command argument list. Handle this gracefully by
>> writing the long argument list in a file. The command line options
>> read from file are inserted in place of the original @file option.
>> 
>> The usage is well documented at
>> https://www.gnu.org/software/make/manual/html_node/File-Function.html
>> 
>> Signed-off-by: Mahesh Kumar Kalikot Veetil <mkalikot@codeaurora.org>
>> Signed-off-by: Jeff Johnson <jjohnson@codeaurora.org>
>> ---
> 
> 
> 
> 
> First, is this a real problem?
> If so, which module is exceeding the command line limit?

On 2021-01-14 17:12, Masahiro Yamada wrote:
> First, is this a real problem?
> If so, which module is exceeding the command line limit?

Mahesh & I appreciate all of the feedback.

The issue is seen in an Android environment with an out-of-tree
driver. The combination of long path names and a large number
of source files is leading to the issue.

Since Mahesh & I are not Kbuild gurus, is there an alternative
solution to this issue?

Jeff

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