On Fri, Nov 13, 2020 at 11:27 PM Bruce Ashfield via
lists.openembedded.org
<[email protected]> wrote:
>
> On Fri, Nov 13, 2020 at 11:19 PM Scott Branden
> <[email protected]> wrote:
> >
> > Sorry, spoke too soon.  Doesn't seem to work from a clean build now.
> >
>
> How so ? Works on repeated clean builds here. For 5.4/5.8 and 5.10
>

I have a theory on this. Did you directly bitbake your external module
? versus building the kernel first and then the module ?

I'll see what I can come up with.

Bruce

> Bruce
>
> > On 2020-11-13 9:53 a.m., Scott Branden wrote:
> >
> > Thanks, works for me building external kernel modules.
> >
> > On 2020-11-12 10:32 p.m., Bruce Ashfield wrote:
> >
> > From: Bruce Ashfield <[email protected]>
> >
> > The upstream commit 596b0474d3d [kbuild: preprocess module linker
> > script], adds a dependency on module.lds for external module
> > building.
> >
> > Since module.lds is generated as part of 'modules_prepare', we
> > must make it available with the other kernel artifacts in the
> > kernel shared workdir, otherwise out of tree builds fail.
> >
> > This fixes errors like:
> >
> >     | make[4]: *** No rule to make target 'scripts/module.lds', needed by
> >         
> > 'build/tmp/work/qemuarm64-poky-linux/cryptodev-module/1.11-r0/git/cryptodev.ko'.
> >         Stop.
> >     | make[4]: *** Waiting for unfinished jobs....
> >
> > We also ensure that kernel-devsrc has a copy to support on
> > target module builds that are often prepared with 'make scripts
> > prepare'. Those targets won't regenerate it, so the build fails.
> > If 'make modules_prepare' is used, the file will be regenerated
> > and overwrite our copy (as expected).
> >
> > Signed-off-by: Pan, Kris <[email protected]>
> > Signed-off-by: Lili Li <[email protected]>
> > Signed-off-by: Bruce Ashfield <[email protected]>
> >
> > Tested-by: Scott Branden <[email protected]>
> >
> > ---
> >  meta/classes/kernel.bbclass                | 1 +
> >  meta/recipes-kernel/linux/kernel-devsrc.bb | 6 ++++++
> >  2 files changed, 7 insertions(+)
> >
> > diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
> > index be93a258f6..ccd74e61e8 100644
> > --- a/meta/classes/kernel.bbclass
> > +++ b/meta/classes/kernel.bbclass
> > @@ -494,6 +494,7 @@ do_shared_workdir () {
> >   # Copy files required for module builds
> >   cp System.map $kerneldir/System.map-${KERNEL_VERSION}
> >   [ -e Module.symvers ] && cp Module.symvers $kerneldir/
> > + [ -e scripts/module.lds ] && install -Dm 0644 scripts/module.lds 
> > $kerneldir/scripts/module.lds
> >   cp .config $kerneldir/
> >   mkdir -p $kerneldir/include/config
> >   cp include/config/kernel.release $kerneldir/include/config/kernel.release
> > diff --git a/meta/recipes-kernel/linux/kernel-devsrc.bb 
> > b/meta/recipes-kernel/linux/kernel-devsrc.bb
> > index 81b1e36041..5f0dedbdf7 100644
> > --- a/meta/recipes-kernel/linux/kernel-devsrc.bb
> > +++ b/meta/recipes-kernel/linux/kernel-devsrc.bb
> > @@ -100,6 +100,12 @@ do_install() {
> >   # be dealt with.
> >   # cp -a scripts $kerneldir/build
> >
> > + # although module.lds can be regenerated on target via 'make 
> > modules_prepare'
> > + # there are several places where 'makes scripts prepare' is done, and 
> > that won't
> > + # regenerate the file. So we copy it onto the target as a migration to 
> > using
> > + # modules_prepare
> > + cp -a --parents scripts/module.lds $kerneldir/build/ 2>/dev/null || :
> > +
> >          if [ -d arch/${ARCH}/scripts ]; then
> >      cp -a arch/${ARCH}/scripts $kerneldir/build/arch/${ARCH}
> >   fi
> >
> >
> >
> >
> >
> >
>
>
> --
> - Thou shalt not follow the NULL pointer, for chaos and madness await
> thee at its end
> - "Use the force Harry" - Gandalf, Star Trek II
>
> 
>


-- 
- Thou shalt not follow the NULL pointer, for chaos and madness await
thee at its end
- "Use the force Harry" - Gandalf, Star Trek II
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