Re: [kbuild-all] make[2]: *** No rule to make target 'tools/testing/nvdimm//config_check.o', needed by 'tools/testing/nvdimm//dax.o'.

[Fengguang Wu]

On Mon, Aug 15, 2016 at 05:58:36PM -0700, Dan Williams wrote:
> On Mon, Aug 15, 2016 at 3:03 AM, kbuild test robot
> <fengguang.wu@xxxxxxxxx> wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   694d0d0bb2030d2e36df73e2d23d5770511dbc8d
> > commit: ab68f26221366f92611650e8470e6a926801c7d4 /dev/dax, pmem: direct access to persistent memory
> > date:   3 months ago
> > config: i386-randconfig-i1-201633 (attached as .config)
> > compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
> > reproduce:
> >         git checkout ab68f26221366f92611650e8470e6a926801c7d4
> >         # save the attached .config to linux build tree
> >         make ARCH=i386
> >
> > All errors (new ones prefixed by >>):
> >
> > > > make[2]: *** No rule to make target 'tools/testing/nvdimm//config_check.o', needed by 'tools/testing/nvdimm//dax.o'.
> >    make[2]: Target '__build' not remade because of errors.
>
> I think this is an invalid build test.  tools/testing/nvdimm/ uses a
> external module Kbuild environment, not Kconfig.  So, there's nothing
> I can do to prevent this compile error, unless there's some other way
> 0-day could determine the configuration dependencies?

Yeah if you can offer a concrete rule for the dependency, we'll add
it to 0-day. 

Yilong (CCed) recently enabled "make M=tools/testing/nvdimm/" and the
current "dependency" checking is pretty permissive: as long as there
is a tools/testing/nvdimm/ dir.

Thanks,
Fengguang