linux-kernel - Re: [PATCH 1/1] kbuild: recursive build of external kernel modules

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Message-ID: <CAJ48U8UKzGPj7JM2z2vnTDC4fT_7+X2NXVLf1T116-ym50i=xQ@mail.gmail.com>
Date:   Tue, 13 Aug 2019 17:10:12 -0500
From:   Shaun Tancheff <shaun@...cheff.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Shaun Tancheff <stancheff@...y.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Joe Lawrence <joe.lawrence@...hat.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        Jonathan Corbet <corbet@....net>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Shuah Khan <shuah@...nel.org>,
        Thomas Renninger <trenn@...e.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM mailing list <linux-pm@...r.kernel.org>,
        linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH 1/1] kbuild: recursive build of external kernel modules

On Mon, Aug 12, 2019 at 8:07 PM Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
>
> On Tue, Aug 13, 2019 at 2:34 AM Shaun Tancheff <shaun@...cheff.com> wrote:
> >
> > On Mon, Aug 12, 2019 at 10:24 AM Masahiro Yamada
> > <yamada.masahiro@...ionext.com> wrote:
> > >
> > > On Fri, Aug 9, 2019 at 9:21 AM Shaun Tancheff <shaun@...cheff.com> wrote:
> > > >
> > > > When building a tree of external modules stage 2 fails
> > > > silently as the root modules.order is empty.
> > > >
> > > > Modify the modules.order location to be fixed to the
> > > > root when KBUILD_EXTMOD is specified and write all
> > > > module paths to the single modules.order file.
> > >
> > > Could you try v5.3-rc4 please?
> >
> > So it seems we are using 'subdir-m' but that is now gone?
> >
> > Is there a recommend pattern for backward compatibility?
> >
> > Thanks!
>
>
> Please convert
>
> subdir-m += dir1
> subdir-m += dir2
>
> into
>
> obj-m += dir1/
> obj-m += dir2/

After working through some local quirks everything is working now.
Thanks!

>
>
> Thanks.
>
> --
> Best Regards
> Masahiro Yamada