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    SubjectRe: linux-next: build failure after merge of the net-next tree
    On Fri, Jun 01, 2018 at 01:59:43PM +1000, Stephen Rothwell wrote:
    > Hi all,
    >
    > On Thu, 31 May 2018 07:38:55 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
    > >
    > > On Tue, 29 May 2018 13:25:48 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
    > > >
    > > > After merging the net-next tree, today's linux-next build (x86_64
    > > > allmodconfig) failed like this:
    > > >
    > > > x86_64-linux-ld: unknown architecture of input file `net/bpfilter/bpfilter_umh.o' is incompatible with i386:x86-64 output
    > > >
    > > > Caused by commit
    > > >
    > > > d2ba09c17a06 ("net: add skeleton of bpfilter kernel module")
    > > >
    > > > In my builds, the host is PowerPC 64 LE ...
    > > >
    > > > I have reverted that commit along with
    > > >
    > > > 61a552eb487f ("bpfilter: fix build dependency")
    > > > 13405468f49d ("bpfilter: don't pass O_CREAT when opening console for debug")
    > > >
    > > > for today.
    > >
    > > I am still getting this failure (well, at least yesterday I did).
    >
    > Still happened today. My guess is that bpfilter_umh needs to be built
    > with the kernel compiler (not the host compiler - since ir is meant to
    > run on the some machine as the kernel, right?) but will require the
    > kernel architecture libc etc
    >
    >
    > I replaced the reverts above with the following:
    >
    > From: Stephen Rothwell <sfr@canb.auug.org.au>
    > Date: Fri, 1 Jun 2018 13:33:28 +1000
    > Subject: [PATCH] net: bpfilter: mark as BROKEN for now
    >
    > This does not build in a cross compile environment
    >
    > Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
    > ---
    > net/bpfilter/Kconfig | 1 +
    > 1 file changed, 1 insertion(+)
    >
    > diff --git a/net/bpfilter/Kconfig b/net/bpfilter/Kconfig
    > index a948b072c28f..ea4be72fdf6e 100644
    > --- a/net/bpfilter/Kconfig
    > +++ b/net/bpfilter/Kconfig
    > @@ -2,6 +2,7 @@ menuconfig BPFILTER
    > bool "BPF based packet filtering framework (BPFILTER)"
    > default n
    > depends on NET && BPF && INET
    > + depends on BROKEN

    yeah. that's another option.
    Sorry for delay. networking folks are traveling to netconf.
    The issue is being discussed here:
    https://patchwork.ozlabs.org/patch/921597/

    Currently we're thinking how to add a check that hostcc's arch
    is equal to cross-cc target arch and ideally equal to arch
    of the host where it will be run.

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