[Buildroot] [PATCH 1/1] nvme: Allow libudev support

[Samuel Mendoza-Jonas]

Hello, thanks for the quick response!

On Mon, Apr 18, 2016 at 09:27:36AM +0200, Thomas Petazzoni wrote:
> Hello,
> 
> Thanks for your contribution!
> 
> On Mon, 18 Apr 2016 14:56:26 +1000, Samuel Mendoza-Jonas wrote:
> > Commands like 'nvme list' require libudev but support for libudev is
> > decided at compile time, and in buildroot this is hard disabled.
> > Add a config option which allows libudev support to be enabled for the
> > nvme package.
> > 
> > Signed-off-by: Samuel Mendoza-Jonas <sam at mendozajonas.com>
> > ---
> >  package/nvme/Config.in |  9 +++++++++
> >  package/nvme/nvme.mk   | 10 ++++++++++
> >  2 files changed, 19 insertions(+)
> > 
> > diff --git a/package/nvme/Config.in b/package/nvme/Config.in
> > index dd8655f..4590fdc 100644
> > --- a/package/nvme/Config.in
> > +++ b/package/nvme/Config.in
> > @@ -5,3 +5,12 @@ config BR2_PACKAGE_NVME
> >  	  Express (optimized PCI Express SSD interface) devices.
> >  
> >  	  https://github.com/linux-nvme/nvme-cli
> > +
> > +if BR2_PACKAGE_NVME
> > +
> > +config BR2_PACKAGE_NVME_LIBUDEV
> > +	bool "nvme-udev"
> > +	help
> > +	  libudev support for the NVME utility
> > +
> > +endif
> 
> We don't need a new sub-option, just enable udev support if udev is
> available.
> 
> > +ifeq ($(BR2_PACKAGE_NVME_LIBUDEV), y)

Ah right, that's much neater

> 
> Remove the space before 'y', and make this:
> 
> ifeq ($(BR2_PACKAGE_HAS_UDEV),y)
> 
> > +NVME_DEPENDENCIES = udev
> 
> Use += here
> 
> And then also define:
> 
> NVME_MAKE_OPTS += LIBUDEV=0
> else
> NVME_MAKE_OPTS += LIBUDEV=1
> 
> > +endif
> >  
> >  # LIBUDEV=1 means that libudev is _disabled_
> > +ifeq ($(BR2_PACKAGE_NVME_LIBUDEV), y)
> > +define NVME_BUILD_CMDS
> > +	$(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) \
> > +		LIBUDEV=0 -C $(@D)
> > +endef
> > +else
> >  define NVME_BUILD_CMDS
> >  	$(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) \
> >  		LIBUDEV=1 -C $(@D)
> >  endef
> 
> Don't duplicate the NVME_BUILD_CMDS variable, simply use
> $(NVME_MAKE_OPTS) as defined above.
> 
> Could you rework your patch and send an updated version? Thanks a lot!

Absolutely, thank you for the feedback.

Regards,
Sam

> 
> Thomas
> -- 
> Thomas Petazzoni, CTO, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com
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