Re: [dpdk-dev] [PATCH v2] build: add meson.build for kni kernel module

[Bruce Richardson <bruce.richardson@intel.com>]

On Mon, Oct 29, 2018 at 03:33:47PM +0000, Luca Boccassi wrote:
> On Mon, 2018-10-29 at 17:09 +0300, Ilya Maximets wrote:
> > > On Fri, 2018-10-12 at 17:29 +0100, Bruce Richardson wrote:
> > > > On Fri, Oct 12, 2018 at 04:12:21PM +0100, Luca Boccassi wrote:
> > > > > A Kbuild is also included to allow users to use DKMS natively
> > > > > without
> > > > > additional code.
> > > > > 
> > > > > Signed-off-by: Luca Boccassi <bluca at debian.org>
> > > > > ---
> > > > > v2: add local directory to -I and build sources list
> > > > > recursively to
> > > > >     fix build on Fedora
> > > > > 
> > > > 
> > > > Yep, now seems to build for me on Fedora. One minor suggestion is
> > > > to
> > > > look
> > > > to use the "console" keyword on the custom_target if possible. It
> > > > should
> > > > help prevent noticable stalls as make runs in the background.
> > > > [Unfortunately, it's meson 0.48 onward only, so if conditionals
> > > > are
> > > > needed,
> > > > just ignore this suggestion]
> > > 
> > > Good idea, I just with 0.48, 0.47 and 0.41 and in all cases there
> > > are
> > > no complaints or errors, it's simply ignored in the older versions.
> > 
> > Hmm.
> > I have following on my Ubuntu 18.04 with dpdk v18.11-rc1:
> > 
> > $ meson --version
> > 0.45.1
> > 
> > $ meson build
> > <...>
> > kernel/linux/kni/meson.build:16: WARNING: Passed invalid keyword
> > argument "console".
> > WARNING: This will become a hard error in the future.
> > WARNING: Unknown keyword arguments in target rte_kni: console
> > <...>
> > 
> > It builds, but prints above warning.
> > 
> > Best regards, Ilya Maximets.
> 
> Interesting, wonder why I didn't see that on 0.41! Anyway those
> warnings are fine to ignore, especially in this case.
> 
Probably because the warnings about unknown parameters only came in a later
version of meson. Earlier versions just ignored them without warning.

/Bruce