[Buildroot] [PATCH v2 1/1] linux: xenomai: allow URL for the ADEOS/IPIPE patch

[Yann E. MORIN <yann.morin.1998@free.fr>]

Thomas, S?bastien, All,

On 2019-05-18 22:06 +0200, Thomas Petazzoni spake thusly:
> On Fri, 17 May 2019 14:50:49 +0200
> S?bastien Szymanski <sebastien.szymanski@armadeus.com> wrote:
> > diff --git a/linux/linux-ext-xenomai.mk b/linux/linux-ext-xenomai.mk
> > index d066bb32ac..ed29943e6c 100644
> > --- a/linux/linux-ext-xenomai.mk
> > +++ b/linux/linux-ext-xenomai.mk
> > @@ -8,10 +8,20 @@ LINUX_EXTENSIONS += xenomai
> >  
> >  # Adeos patch version
> >  XENOMAI_ADEOS_PATCH = $(call qstrip,$(BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH))
> > +
> > +ifneq ($(filter ftp://% http://% https://%, $(XENOMAI_ADEOS_PATCH)),)
> > +XENOMAI_ADEOS_PATCH_NAME = $(notdir $(XENOMAI_ADEOS_PATCH))
> > +XENOMAI_ADEOS_PATCH_PATH = $(LINUX_DL_DIR)/$(XENOMAI_ADEOS_PATCH_NAME)
> > +LINUX_EXTRA_DOWNLOADS += $(XENOMAI_ADEOS_PATCH)
> > +BR_NO_CHECK_HASH_FOR += $(XENOMAI_ADEOS_PATCH_NAME)
> > +else
> > +XENOMAI_ADEOS_PATCH_PATH = $(subst file://,,$(XENOMAI_ADEOS_PATCH))
> 
> I don't feel super strongly about this, but everywhere else in
> Buildroot when paths are specified through configuration options, we do
> not support having a file:// URI. For example the
> BR2_LINUX_KERNEL_PATCH option will support file paths only without
> file://.
> 
> So for consistency, I would do the same here, and therefore just do:
> 
> XENOMAI_ADEOS_PATCH_PATH = $(XENOMAI_ADEOS_PATCH)
> 
> Yann, what do you think ?

Indeed, I don't see the point in the file:// scheme. I don't even see
people really using it routinely.

But as far as I can see, the above, although wrong, does not require
that the file:// prefix be used. If it is there, it is scrubbed;
otherwise the filename is used as-is.

And it is wrong, because it should only remove it at the beginning.
$(subst ...) would remove it anywhere. So if we were to use it (and I
think we should not), we'd have to use $(patsubst ...) instead;
    XENOMAI_ADEOS_PATCH_PATH = $(patsubst file://%,%,$(XENOMAI_ADEOS_PATCH))

Regards,
Yann E. MORIN.

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