netdev - Re: [PATCH iproute2-next v3] lib/fs: fix issue when {name,open}_to_handle

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Date:   Sat, 15 May 2021 12:26:12 -0600
From:   David Ahern <dsahern@...il.com>
To:     Petr Vorel <petr.vorel@...il.com>
Cc:     Heiko Thiery <heiko.thiery@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, stephen@...workplumber.org,
        Dmitry Yakunin <zeil@...dex-team.ru>
Subject: Re: [PATCH iproute2-next v3] lib/fs: fix issue when
 {name,open}_to_handle_at() is not implemented

On 5/15/21 10:59 AM, Petr Vorel wrote:
> Hi David,
>> On 5/14/21 6:20 AM, Petr Vorel wrote:
> 
>>>>> This causes compile failures if anyone is reusing a tree. It would be
>>>>> good to require config.mk to be updated if configure is newer.
>>>> Do you mean the config.mk should have a dependency to configure in the
>>>> Makefile? Wouldn't that be better as a separate patch?
>>> I guess it should be a separate patch. I'm surprised it wasn't needed before.
> 
> 
> 
>> yes, it should be a separate patch, but it needs to precede this one.
> 
>> This worked for me last weekend; I'll send it when I get a chance.
> 
>> diff --git a/Makefile b/Makefile
>> index 19bd163e2e04..5bc11477ab7a 100644
>> --- a/Makefile
>> +++ b/Makefile
>> @@ -60,7 +60,7 @@ SUBDIRS=lib ip tc bridge misc netem genl tipc devlink
>> rdma dcb man vdpa
>>  LIBNETLINK=../lib/libutil.a ../lib/libnetlink.a
>>  LDLIBS += $(LIBNETLINK)
> 
>> -all: config.mk
>> +all: config
>>         @set -e; \
>>         for i in $(SUBDIRS); \
>>         do echo; echo $$i; $(MAKE) -C $$i; done
>> @@ -80,8 +80,10 @@ all: config.mk
>>         @echo "Make Arguments:"
>>         @echo " V=[0|1]             - set build verbosity level"
> 
>> -config.mk:
>> -       sh configure $(KERNEL_INCLUDE)
>> +config:
>> +       @if [ ! -f config.mk -o configure -nt config.mk ]; then \
>> +               sh configure $(KERNEL_INCLUDE); \
>> +       fi
> 
>>  install: all
>>         install -m 0755 -d $(DESTDIR)$(SBINDIR)
> 
> Thanks a lot, please send it.
> 
> I know this is only a fragment, but:
> Reviewed-by: Petr Vorel <petr.vorel@...il.com>
> 
> -nt is supported by dash and busybox sh.
> 

That helps. My concern was all the sh variants.