[RFC PATCH 1/2] objtool: Run objtool only if either of the config options are selected

[Sathvika Vasireddy]

Hi Masahiro, thanks for reviewing.

On 4/22/24 5:39 PM, Masahiro Yamada wrote:
> On Mon, Apr 22, 2024 at 6:25 PM Sathvika Vasireddy<sv at linux.ibm.com>  wrote:
>> Currently, when objtool is enabled and none of the supported options
>> are triggered, kernel build errors out with the below error:
>> error: objtool: At least one command required.
>
> Then, I think CONFIG_OBJTOOL should be disabled.
A subsequent patch introduces --ftr-fixup as an option to objtool to do 
feature fixup at build-time via CONFIG_HAVE_OBJTOOL_FTR_FIXUP option. If 
CONFIG_OBJTOOL is not selected, then objtool cannot be used to pass 
--ftr-fixup option.

In cases where none of the supported options (like --mcount on powerpc 
for example) is triggered, but still require --ftr-fixup option to be 
passed to objtool, we see "error: objtool: At least one command 
required" errors. So, to address this, run only when either of the 
config options are selected.

Thanks,
Sathvika
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