[meta-fsl-arm-extra][PATCH v3] riotboard: Fix broken image builds against linux-fslc

[meta-fsl-arm-extra][PATCH v3] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Several Yocto images fail to build because they're using packages that require
imx6-specific hardware support (ASRC, VPU, GPU3D), which is not available in
the mainline kernel. This patch fixes the following image builds:
- core-image-minimal
- core-image-base
- fsl-image-multimedia
- fsl-image-multimedia-full
- fsl-image-machine-test

Signed-off-by: Nikolay Dimitrov <picmaster@mail.bg>
---
 conf/machine/imx6dl-riotboard.conf |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/conf/machine/imx6dl-riotboard.conf b/conf/machine/imx6dl-riotboard.conf
index b611ffb..bf50eaf 100644
--- a/conf/machine/imx6dl-riotboard.conf
+++ b/conf/machine/imx6dl-riotboard.conf
@@ -15,3 +15,8 @@ PREFERRED_PROVIDER_virtual/kernel ?= "linux-fslc"
 KERNEL_DEVICETREE = "imx6dl-riotboard.dtb"
 
 SERIAL_CONSOLE = "115200 ttymxc1"
+
+# FIXME: Workaround for building against linux-fslc
+MACHINE_EXTRA_RRECOMMENDS_remove = "fsl-alsa-plugins"
+PREFERRED_VERSION_imx-test = "00.00.00"
+MACHINE_GSTREAMER_PLUGIN = ""
-- 
1.7.10.4

[meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Several Yocto images fail to build because they're using packages that require
imx6-specific hardware support (GPU3D), which is not available in the mainline
kernel. This patch fixes the following image builds:
- fsl-image-multimedia
- fsl-image-multimedia-full
- fsl-image-machine-test

Signed-off-by: Nikolay Dimitrov <picmaster@mail.bg>
---
 recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb b/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb
index 25b26f6..97aab66 100644
--- a/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb
+++ b/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb
@@ -25,3 +25,6 @@ RDEPENDS_${PN} = " \
 # FIXME: i.MX6SL cannot use mesa for Graphics and it lacks 3D support,
 #        so skip it for now.
 RDEPENDS_${PN}_remove_mx6sl = "gst-plugins-gl"
+
+# FIXME: Workaround for building against linux-fslc
+RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"
-- 
1.7.10.4

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Fabio Estevam]

Hi Nikolay,

On Thu, Apr 30, 2015 at 12:49 PM, Nikolay Dimitrov <picmaster@mail.bg> wrote:

> +# FIXME: Workaround for building against linux-fslc
> +RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"

This doesn't seem to scale very well as we would need to put every
mx6q/dl board that uses linux-fslc in this list.

Regards,

Fabio Estevam

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Hi Fabio,

On 05/04/2015 03:41 PM, Fabio Estevam wrote:
> Hi Nikolay,
>
> On Thu, Apr 30, 2015 at 12:49 PM, Nikolay Dimitrov
> <picmaster@mail.bg> wrote:
>
>> +# FIXME: Workaround for building against linux-fslc
>> +RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"
>
> This doesn't seem to scale very well as we would need to put every
> mx6q/dl board that uses linux-fslc in this list.
>
> Regards,
>
> Fabio Estevam

I completely understand and agree, but I don't feel qualified to force
all other mx6 maintainers to use the same approach. If others decide to
go this way, we can then use the "_remove" clause for all "mx6" SOCs,
and put appropriate comment in the file. But as of today, I don't see
such push.

Considering the amount of discussion my patches provoke, I'm now more
inclined to propose micro-changes that are more obvious/easier to
approve and move forward.

Kind regards,
Nikolay

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Daiane Angolini]

On Mon, May 4, 2015 at 10:33 AM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
> Hi Fabio,
>
> On 05/04/2015 03:41 PM, Fabio Estevam wrote:
>>
>> Hi Nikolay,
>>
>> On Thu, Apr 30, 2015 at 12:49 PM, Nikolay Dimitrov
>> <picmaster@mail.bg> wrote:
>>
>>> +# FIXME: Workaround for building against linux-fslc
>>> +RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"
>>
>>
>> This doesn't seem to scale very well as we would need to put every
>> mx6q/dl board that uses linux-fslc in this list.
>>
>> Regards,
>>
>> Fabio Estevam
>
>
> I completely understand and agree, but I don't feel qualified to force
> all other mx6 maintainers to use the same approach. If others decide to
> go this way, we can then use the "_remove" clause for all "mx6" SOCs,
> and put appropriate comment in the file. But as of today, I don't see
> such push.

gst-plugins-gl is included in the image by:
https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb#L21

right?

So, remove opengl from your DISTRO_FEATURES and it should work.


However, we have already this line:

https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb#L27

Which means mx6sl cannot handle gst-plugins-gl. Riot is not mx6sl, so
maybe you have spoted another corner case.

>
> Considering the amount of discussion my patches provoke, I'm now more
> inclined to propose micro-changes that are more obvious/easier to
> approve and move forward.

Please, keep the discussion up and running. Please, keep the questions
and the patches, we really need more experienced board maintainers for
the community boards.

Daiane
>
> Kind regards,
> Nikolay
>
> --
> _______________________________________________
> meta-freescale mailing list
> meta-freescale@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/meta-freescale

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Gary Thomas]

On 2015-05-04 11:06, Daiane Angolini wrote:
> On Mon, May 4, 2015 at 10:33 AM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
>> Hi Fabio,
>>
>> On 05/04/2015 03:41 PM, Fabio Estevam wrote:
>>>
>>> Hi Nikolay,
>>>
>>> On Thu, Apr 30, 2015 at 12:49 PM, Nikolay Dimitrov
>>> <picmaster@mail.bg> wrote:
>>>
>>>> +# FIXME: Workaround for building against linux-fslc
>>>> +RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"
>>>
>>>
>>> This doesn't seem to scale very well as we would need to put every
>>> mx6q/dl board that uses linux-fslc in this list.
>>>
>>> Regards,
>>>
>>> Fabio Estevam
>>
>>
>> I completely understand and agree, but I don't feel qualified to force
>> all other mx6 maintainers to use the same approach. If others decide to
>> go this way, we can then use the "_remove" clause for all "mx6" SOCs,
>> and put appropriate comment in the file. But as of today, I don't see
>> such push.
>
> gst-plugins-gl is included in the image by:
> https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb#L21
>
> right?
>
> So, remove opengl from your DISTRO_FEATURES and it should work.
>
>
> However, we have already this line:
>
> https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb#L27
>
> Which means mx6sl cannot handle gst-plugins-gl. Riot is not mx6sl, so
> maybe you have spoted another corner case.

These problems are not a new corner case; rather just that the RIoTboard
is not using the FSL kernel and hence does not have the GPU support required
for building the packages that rely on it [the GPU support]

>
>>
>> Considering the amount of discussion my patches provoke, I'm now more
>> inclined to propose micro-changes that are more obvious/easier to
>> approve and move forward.
>
> Please, keep the discussion up and running. Please, keep the questions
> and the patches, we really need more experienced board maintainers for
> the community boards.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Hi Daiane,

On 05/04/2015 08:06 PM, Daiane Angolini wrote:
> On Mon, May 4, 2015 at 10:33 AM, Nikolay Dimitrov <picmaster@mail.bg>
> wrote:
>> Hi Fabio,
>>
>> On 05/04/2015 03:41 PM, Fabio Estevam wrote:
>>>
>>> Hi Nikolay,
>>>
>>> On Thu, Apr 30, 2015 at 12:49 PM, Nikolay Dimitrov
>>> <picmaster@mail.bg> wrote:
>>>
>>>> +# FIXME: Workaround for building against linux-fslc
>>>> +RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"
>>>
>>>
>>> This doesn't seem to scale very well as we would need to put
>>> every mx6q/dl board that uses linux-fslc in this list.
>>>
>>> Regards,
>>>
>>> Fabio Estevam
>>
>>
>> I completely understand and agree, but I don't feel qualified to
>> force all other mx6 maintainers to use the same approach. If others
>> decide to go this way, we can then use the "_remove" clause for all
>> "mx6" SOCs, and put appropriate comment in the file. But as of
>> today, I don't see such push.
>
> gst-plugins-gl is included in the image by:
> https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb#L21
>
>  right?
>
> So, remove opengl from your DISTRO_FEATURES and it should work.
>
>
> However, we have already this line:
>
> https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb#L27
>
>  Which means mx6sl cannot handle gst-plugins-gl. Riot is not mx6sl,
> so maybe you have spoted another corner case.

Thanks for your comments. I've already sent an email with same analysis
just before sending the patch, which uses the described above method.

>> Considering the amount of discussion my patches provoke, I'm now
>> more inclined to propose micro-changes that are more obvious/easier
>> to approve and move forward.
>
> Please, keep the discussion up and running. Please, keep the
> questions and the patches, we really need more experienced board
> maintainers for the community boards.

Regards,
Nikolay

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Ping.

On 04/30/2015 06:49 PM, Nikolay Dimitrov wrote:
> Several Yocto images fail to build because they're using packages that require
> imx6-specific hardware support (GPU3D), which is not available in the mainline
> kernel. This patch fixes the following image builds:
> - fsl-image-multimedia
> - fsl-image-multimedia-full
> - fsl-image-machine-test
>
> Signed-off-by: Nikolay Dimitrov <picmaster@mail.bg>
> ---
>   recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb |    3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb b/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb
> index 25b26f6..97aab66 100644
> --- a/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb
> +++ b/recipes-fsl/packagegroups/packagegroup-fsl-gstreamer-full.bb
> @@ -25,3 +25,6 @@ RDEPENDS_${PN} = " \
>   # FIXME: i.MX6SL cannot use mesa for Graphics and it lacks 3D support,
>   #        so skip it for now.
>   RDEPENDS_${PN}_remove_mx6sl = "gst-plugins-gl"
> +
> +# FIXME: Workaround for building against linux-fslc
> +RDEPENDS_${PN}_remove_imx6dl-riotboard = "gst-plugins-gl"
>

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Otavio Salvador]

On Mon, May 11, 2015 at 1:43 PM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
> Ping.

I am building it here for testing.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Hi Otavio,

On 05/11/2015 08:09 PM, Otavio Salvador wrote:
> On Mon, May 11, 2015 at 1:43 PM, Nikolay Dimitrov <picmaster@mail.bg>
> wrote:
>> Ping.
>
> I am building it here for testing.

That's great, thanks for looking into it.

Regards,
Nikolay

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Otavio Salvador]

On Mon, May 11, 2015 at 2:24 PM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
> Hi Otavio,
>
> On 05/11/2015 08:09 PM, Otavio Salvador wrote:
>>
>> On Mon, May 11, 2015 at 1:43 PM, Nikolay Dimitrov <picmaster@mail.bg>
>> wrote:
>>>
>>> Ping.
>>
>>
>> I am building it here for testing.
>
>
> That's great, thanks for looking into it.

Your patch can get a change:

diff --git a/conf/machine/imx6dl-riotboard.conf
b/conf/machine/imx6dl-riotboard.conf
index bf50eaf..260deed 100644
--- a/conf/machine/imx6dl-riotboard.conf
+++ b/conf/machine/imx6dl-riotboard.conf
@@ -19,4 +19,4 @@ SERIAL_CONSOLE = "115200 ttymxc1"
 # FIXME: Workaround for building against linux-fslc
 MACHINE_EXTRA_RRECOMMENDS_remove = "fsl-alsa-plugins"
 PREFERRED_VERSION_imx-test = "00.00.00"
-MACHINE_GSTREAMER_PLUGIN = ""
+MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard = ""

This makes the patch in meta-fsl-demos not needed and seems cleaner.

Can you take a look and confirm?

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Hi Otavio,

On 05/11/2015 08:46 PM, Otavio Salvador wrote:
> On Mon, May 11, 2015 at 2:24 PM, Nikolay Dimitrov <picmaster@mail.bg>
> wrote:
>> Hi Otavio,
>>
>> On 05/11/2015 08:09 PM, Otavio Salvador wrote:
>>>
>>> On Mon, May 11, 2015 at 1:43 PM, Nikolay Dimitrov
>>> <picmaster@mail.bg> wrote:
>>>>
>>>> Ping.
>>>
>>>
>>> I am building it here for testing.
>>
>>
>> That's great, thanks for looking into it.
>
> Your patch can get a change:
>
> diff --git a/conf/machine/imx6dl-riotboard.conf
> b/conf/machine/imx6dl-riotboard.conf index bf50eaf..260deed 100644
> --- a/conf/machine/imx6dl-riotboard.conf +++
> b/conf/machine/imx6dl-riotboard.conf @@ -19,4 +19,4 @@ SERIAL_CONSOLE
> = "115200 ttymxc1" # FIXME: Workaround for building against
> linux-fslc MACHINE_EXTRA_RRECOMMENDS_remove = "fsl-alsa-plugins"
> PREFERRED_VERSION_imx-test = "00.00.00" -MACHINE_GSTREAMER_PLUGIN =
> "" +MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard = ""
>
> This makes the patch in meta-fsl-demos not needed and seems cleaner.
>
> Can you take a look and confirm?

This code sits in riotboard-specific conf file, so there's no difference
between MACHINE_GSTREAMER_PLUGIN and
MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard variables. The machine suffix
is redundant in the 2nd case. But even if I use the proposed
MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard, the fsl-image-multimedia-full
image build still fails.

Regarding the meta-fsl-demos patch - the need for this fix is because
the packagegroup-fsl-gstreamer-full.bb is again adding the
gst-plugins-gl dependency, disregarding the available capabilities
(either hardware or kernel).

So, my motivation for doing it this way for short term is the following:
1. I still have single kernel to maintain (fslc) as of today.
2. The board builds are broken at least since 23.April and I have to do
something about it.

FYI, for a long-term solution I plan to do the following, if you agree:
- Support building multiple kernels, including both FSL and FSLC
- Somehow declare the capabilities of the hardware/kernel and take it
into account by in recipes. We need something like KERNEL_FEATURES and
MACHINE_FEATURES, and only if a feature is declared by both variables,
then it should be used (not sure whether this is the same as the
COMBINED_FEATURES mechanism). I'm looking towards your ideas here, as
you guys have much more Yocto experience than me.

To summarize: my patch set is not perfect, but as of today we don't
have all the ingredients to make it perfect. Tomorrow we could have
these ingredients, but I can't see how far is this tomorrow.

Regards,
Nikolay

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Otavio Salvador]

On Mon, May 11, 2015 at 8:42 PM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
> On 05/11/2015 08:46 PM, Otavio Salvador wrote:
>> On Mon, May 11, 2015 at 2:24 PM, Nikolay Dimitrov <picmaster@mail.bg>
>> wrote:
>>>
>>> Hi Otavio,
>>>
>>> On 05/11/2015 08:09 PM, Otavio Salvador wrote:
>>>>
>>>>
>>>> On Mon, May 11, 2015 at 1:43 PM, Nikolay Dimitrov
>>>> <picmaster@mail.bg> wrote:
>>>>>
>>>>>
>>>>> Ping.
>>>>
>>>>
>>>>
>>>> I am building it here for testing.
>>>
>>>
>>>
>>> That's great, thanks for looking into it.
>>
>>
>> Your patch can get a change:
>>
>> diff --git a/conf/machine/imx6dl-riotboard.conf
>> b/conf/machine/imx6dl-riotboard.conf index bf50eaf..260deed 100644
>> --- a/conf/machine/imx6dl-riotboard.conf +++
>> b/conf/machine/imx6dl-riotboard.conf @@ -19,4 +19,4 @@ SERIAL_CONSOLE
>> = "115200 ttymxc1" # FIXME: Workaround for building against
>> linux-fslc MACHINE_EXTRA_RRECOMMENDS_remove = "fsl-alsa-plugins"
>> PREFERRED_VERSION_imx-test = "00.00.00" -MACHINE_GSTREAMER_PLUGIN =
>> "" +MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard = ""
>>
>> This makes the patch in meta-fsl-demos not needed and seems cleaner.
>>
>> Can you take a look and confirm?
>
>
> This code sits in riotboard-specific conf file, so there's no difference
> between MACHINE_GSTREAMER_PLUGIN and
> MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard variables. The machine suffix
> is redundant in the 2nd case. But even if I use the proposed
> MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard, the fsl-image-multimedia-full
> image build still fails.

I reproduced it here. It fails only with X11 and my test was using
Framebuffer. I have sent a patch for review.

> Regarding the meta-fsl-demos patch - the need for this fix is because
> the packagegroup-fsl-gstreamer-full.bb is again adding the
> gst-plugins-gl dependency, disregarding the available capabilities
> (either hardware or kernel).

See above.

> So, my motivation for doing it this way for short term is the following:
> 1. I still have single kernel to maintain (fslc) as of today.
> 2. The board builds are broken at least since 23.April and I have to do
> something about it.
>
> FYI, for a long-term solution I plan to do the following, if you agree:
> - Support building multiple kernels, including both FSL and FSLC
> - Somehow declare the capabilities of the hardware/kernel and take it
> into account by in recipes. We need something like KERNEL_FEATURES and
> MACHINE_FEATURES, and only if a feature is declared by both variables,
> then it should be used (not sure whether this is the same as the
> COMBINED_FEATURES mechanism). I'm looking towards your ideas here, as
> you guys have much more Yocto experience than me.
>
> To summarize: my patch set is not perfect, but as of today we don't
> have all the ingredients to make it perfect. Tomorrow we could have
> these ingredients, but I can't see how far is this tomorrow.

The biggest challenge here is how to express KERNEL_FEATURES which are
recipe/provider specific.

We have some providers:

 linux-fslc
 linux-imx
 linux-<vendor>

and each can provide different kernel features. I agree with the long
term plan but I didn't yet came up with something which scales and
work.


-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Hi Otavio,

On 05/12/2015 03:41 PM, Otavio Salvador wrote:
> On Mon, May 11, 2015 at 8:42 PM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
>> On 05/11/2015 08:46 PM, Otavio Salvador wrote:
>>> On Mon, May 11, 2015 at 2:24 PM, Nikolay Dimitrov <picmaster@mail.bg>
>>> wrote:
>>>>
>>>> Hi Otavio,
>>>>
>>>> On 05/11/2015 08:09 PM, Otavio Salvador wrote:
>>>>>
>>>>>
>>>>> On Mon, May 11, 2015 at 1:43 PM, Nikolay Dimitrov
>>>>> <picmaster@mail.bg> wrote:
>>>>>>
>>>>>>
>>>>>> Ping.
>>>>>
>>>>>
>>>>>
>>>>> I am building it here for testing.
>>>>
>>>>
>>>>
>>>> That's great, thanks for looking into it.
>>>
>>>
>>> Your patch can get a change:
>>>
>>> diff --git a/conf/machine/imx6dl-riotboard.conf
>>> b/conf/machine/imx6dl-riotboard.conf index bf50eaf..260deed 100644
>>> --- a/conf/machine/imx6dl-riotboard.conf +++
>>> b/conf/machine/imx6dl-riotboard.conf @@ -19,4 +19,4 @@ SERIAL_CONSOLE
>>> = "115200 ttymxc1" # FIXME: Workaround for building against
>>> linux-fslc MACHINE_EXTRA_RRECOMMENDS_remove = "fsl-alsa-plugins"
>>> PREFERRED_VERSION_imx-test = "00.00.00" -MACHINE_GSTREAMER_PLUGIN =
>>> "" +MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard = ""
>>>
>>> This makes the patch in meta-fsl-demos not needed and seems cleaner.
>>>
>>> Can you take a look and confirm?
>>
>>
>> This code sits in riotboard-specific conf file, so there's no difference
>> between MACHINE_GSTREAMER_PLUGIN and
>> MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard variables. The machine suffix
>> is redundant in the 2nd case. But even if I use the proposed
>> MACHINE_GSTREAMER_PLUGIN_imx6dl-riotboard, the fsl-image-multimedia-full
>> image build still fails.
>
> I reproduced it here. It fails only with X11 and my test was using
> Framebuffer. I have sent a patch for review.

The patch looks ok to me. I suppose that after this fix, the RDEPENDS
hack for imx6sl is not needed anymore?

>> Regarding the meta-fsl-demos patch - the need for this fix is because
>> the packagegroup-fsl-gstreamer-full.bb is again adding the
>> gst-plugins-gl dependency, disregarding the available capabilities
>> (either hardware or kernel).
>
> See above.
>
>> So, my motivation for doing it this way for short term is the following:
>> 1. I still have single kernel to maintain (fslc) as of today.
>> 2. The board builds are broken at least since 23.April and I have to do
>> something about it.
>>
>> FYI, for a long-term solution I plan to do the following, if you agree:
>> - Support building multiple kernels, including both FSL and FSLC
>> - Somehow declare the capabilities of the hardware/kernel and take it
>> into account by in recipes. We need something like KERNEL_FEATURES and
>> MACHINE_FEATURES, and only if a feature is declared by both variables,
>> then it should be used (not sure whether this is the same as the
>> COMBINED_FEATURES mechanism). I'm looking towards your ideas here, as
>> you guys have much more Yocto experience than me.
>>
>> To summarize: my patch set is not perfect, but as of today we don't
>> have all the ingredients to make it perfect. Tomorrow we could have
>> these ingredients, but I can't see how far is this tomorrow.
>
> The biggest challenge here is how to express KERNEL_FEATURES which are
> recipe/provider specific.
>
> We have some providers:
>
>   linux-fslc
>   linux-imx
>   linux-<vendor>
>
> and each can provide different kernel features. I agree with the long
> term plan but I didn't yet came up with something which scales and
> work.

I'll reiterate my thoughts - it's not only the kernel features. All the
parts in the system need to consider a feature, before it's built:
- hardware
- kernel
- userspace

A feature shouldn't be compiled and/or deployed in the image unless all
the system parts confirm its support, otherwise we'll have a failed
build or runtime issues.

With my current limited knowledge I see 2 basic paths for implementing
this:
- 1 shared variable per feature, which is mangled across the
recipes/layers (the usual enable/disable dance);
- mechanism similar to COMBINED_FEATURES, which needs to "AND" 2 or
more sets of variables across the system. This is already done
implicitly in lots of places with heavy usage of $base_contains, but
it's not easy to read and explicit.

// board.conf
MACHINE_FEATURES += "opengl"

// kernel provider
KERNEL_FEATURES += "opengl"

// image or recipe should check features indirectly
XXXXXXX_append = "${base_contains('COMBINED_FEATURES', 'opengl', 
'gst-plugins-gl', '', d)}

Something like this...

Regards,
Nikolay

Re: [meta-fsl-demos][PATCH] riotboard: Fix broken image builds against linux-fslc

[Otavio Salvador]

On Wed, May 13, 2015 at 1:09 AM, Nikolay Dimitrov <picmaster@mail.bg> wrote:
> On 05/12/2015 03:41 PM, Otavio Salvador wrote:
>> I reproduced it here. It fails only with X11 and my test was using
>> Framebuffer. I have sent a patch for review.
>
> The patch looks ok to me. I suppose that after this fix, the RDEPENDS
> hack for imx6sl is not needed anymore?

It is as imx6sl does not provide the headers[1] and gst-plugins-gl
fail to build.

1. http://git.yoctoproject.org/cgit/cgit.cgi/meta-fsl-arm/tree/recipes-graphics/imx-gpu-viv/imx-gpu-viv.inc#n220

...
>> The biggest challenge here is how to express KERNEL_FEATURES which are
>> recipe/provider specific.
>>
>> We have some providers:
>>
>>   linux-fslc
>>   linux-imx
>>   linux-<vendor>
>>
>> and each can provide different kernel features. I agree with the long
>> term plan but I didn't yet came up with something which scales and
>> work.
>
>
> I'll reiterate my thoughts - it's not only the kernel features. All the
> parts in the system need to consider a feature, before it's built:
> - hardware
> - kernel
> - userspace
>
> A feature shouldn't be compiled and/or deployed in the image unless all
> the system parts confirm its support, otherwise we'll have a failed
> build or runtime issues.
>
> With my current limited knowledge I see 2 basic paths for implementing
> this:
> - 1 shared variable per feature, which is mangled across the
> recipes/layers (the usual enable/disable dance);
> - mechanism similar to COMBINED_FEATURES, which needs to "AND" 2 or
> more sets of variables across the system. This is already done
> implicitly in lots of places with heavy usage of $base_contains, but
> it's not easy to read and explicit.
>
> // board.conf
> MACHINE_FEATURES += "opengl"
>
> // kernel provider
> KERNEL_FEATURES += "opengl"
>
> // image or recipe should check features indirectly
> XXXXXXX_append = "${base_contains('COMBINED_FEATURES', 'opengl',
> 'gst-plugins-gl', '', d)}
>
> Something like this...

The biggest challenge here is how to express KERNEL_FEATURES which are
recipe/provider specific.

We have some providers:

  linux-fslc
  linux-imx
  linux-<vendor>

and each can provide different kernel features. We will need to come
up with a solution to export the KERNEL_FEATURES outside of recipe
namespace and make it in a clean and easy to maintain way. This is the
part of puzzle still not in place.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: [meta-fsl-arm-extra][PATCH v3] riotboard: Fix broken image builds against linux-fslc

[Nikolay Dimitrov]

Ping.

On 04/30/2015 06:49 PM, Nikolay Dimitrov wrote:
> Several Yocto images fail to build because they're using packages that require
> imx6-specific hardware support (ASRC, VPU, GPU3D), which is not available in
> the mainline kernel. This patch fixes the following image builds:
> - core-image-minimal
> - core-image-base
> - fsl-image-multimedia
> - fsl-image-multimedia-full
> - fsl-image-machine-test
>
> Signed-off-by: Nikolay Dimitrov <picmaster@mail.bg>
> ---
>   conf/machine/imx6dl-riotboard.conf |    5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/conf/machine/imx6dl-riotboard.conf b/conf/machine/imx6dl-riotboard.conf
> index b611ffb..bf50eaf 100644
> --- a/conf/machine/imx6dl-riotboard.conf
> +++ b/conf/machine/imx6dl-riotboard.conf
> @@ -15,3 +15,8 @@ PREFERRED_PROVIDER_virtual/kernel ?= "linux-fslc"
>   KERNEL_DEVICETREE = "imx6dl-riotboard.dtb"
>
>   SERIAL_CONSOLE = "115200 ttymxc1"
> +
> +# FIXME: Workaround for building against linux-fslc
> +MACHINE_EXTRA_RRECOMMENDS_remove = "fsl-alsa-plugins"
> +PREFERRED_VERSION_imx-test = "00.00.00"
> +MACHINE_GSTREAMER_PLUGIN = ""
>