How to strip down my Yocto Linux?

How to strip down my Yocto Linux?

[Bacheh Karaji]

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I would like to strip down my Yocto Linux before put in it to flash. Unneeded software, man pages, POCO sample codes and other documentation just waste resource, especially on the i.MX28 EVK with only 128MB flash.

My local.conf file looks following:

$ gedit conf/local.conf &
...
IMAGE_INSTALL_append = " poco nginx canutils vsftpd curl fcgi spawn-fcgi net-snmp util-linux ubiattach-klibc ubimkvol-klibc ubiformat-klibc minicom net-tools zeroconf avahi-autoipd mtd-utils u-boot-fw-utils ethtool"
...
I bitbake the image "core-image-base".

I was wondering, is there a way that I can delete all of the Unneeded files?

Can somebody help me howto strip down my Yocto Linux?


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Re: How to strip down my Yocto Linux?

[Markus Volk]

I guess that depends on what your needs are. Personally i would start to build core-image-minimal and just add the packages i need

regards
Markus

On Wed, 2 Aug 2017 09:47:15 +0000 (UTC)
Bacheh Karaji <bachehkaraji@yahoo.com> wrote:

> 
> I would like to strip down my Yocto Linux before put in it to flash. Unneeded software, man pages, POCO sample codes and other documentation just waste resource, especially on the i.MX28 EVK with only 128MB flash.
> 
> My local.conf file looks following:
> 
> $ gedit conf/local.conf &
> ...
> IMAGE_INSTALL_append = " poco nginx canutils vsftpd curl fcgi spawn-fcgi net-snmp util-linux ubiattach-klibc ubimkvol-klibc ubiformat-klibc minicom net-tools zeroconf avahi-autoipd mtd-utils u-boot-fw-utils ethtool"
> ...
> I bitbake the image "core-image-base".
> 
> I was wondering, is there a way that I can delete all of the Unneeded files?
> 
> Can somebody help me howto strip down my Yocto Linux?
> 


-- 
Markus Volk <f_l_k@t-online.de>

Re: How to strip down my Yocto Linux?

[Ayoub Zaki]

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A quick win also to remove DISTRO features in local.conf that your 
application(s) does not need  :

DISTRO_FEATURES_remove = "bluetooth"
DISTRO_FEATURES_remove = "3g"
DISTRO_FEATURES_remove = "opengl"
DISTRO_FEATURES_remove = "wayland"
DISTRO_FEATURES_remove = "x11"
DISTRO_FEATURES_remove = "nfc"
DISTRO_FEATURES_remove = "nfs"
DISTRO_FEATURES_remove = "ext2"

etc...

-- 

Ayoub Zaki

ayoub.zaki@embexus.com
Mobile: +49(0)176-62901545
Skype: ayoub.zaki_2
https://embexus.com


On 02.08.2017 11:57, Markus Volk wrote:
> I guess that depends on what your needs are. Personally i would start to build core-image-minimal and just add the packages i need
>
> regards
> Markus
>
> On Wed, 2 Aug 2017 09:47:15 +0000 (UTC)
> Bacheh Karaji <bachehkaraji@yahoo.com> wrote:
>
>> I would like to strip down my Yocto Linux before put in it to flash. Unneeded software, man pages, POCO sample codes and other documentation just waste resource, especially on the i.MX28 EVK with only 128MB flash.
>>
>> My local.conf file looks following:
>>
>> $ gedit conf/local.conf &
>> ...
>> IMAGE_INSTALL_append = " poco nginx canutils vsftpd curl fcgi spawn-fcgi net-snmp util-linux ubiattach-klibc ubimkvol-klibc ubiformat-klibc minicom net-tools zeroconf avahi-autoipd mtd-utils u-boot-fw-utils ethtool"
>> ...
>> I bitbake the image "core-image-base".
>>
>> I was wondering, is there a way that I can delete all of the Unneeded files?
>>
>> Can somebody help me howto strip down my Yocto Linux?
>>
>


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Re: How to strip down my Yocto Linux?

[Josef Holzmayr]

Hi!

At the moment it like this:

On 02.08.2017 11:47, Bacheh Karaji wrote:
 > I bitbake the image "core-image-base"/.

You start out with a already big image setup.

> IMAGE_INSTALL_append = " poco nginx canutils vsftpd curl fcgi spawn-fcgi 
> net-snmp util-linux ubiattach-klibc ubimkvol-klibc ubiformat-klibc 
> minicom net-tools zeroconf avahi-autoipd mtd-utils u-boot-fw-utils ethtool"

And then you add even more stuff.

After that, you want to remove lots of it again.

While that maybe technically works, its pretty pointless. You first 
waste a lot of compilation time in generating stuff, which you then need 
additional time to remove again.

The correct approach is to create an image recipe that exactly fits your 
needs. Usually one would start out with core-image-minimal.bb, copy that 
to your-cool-image.bb, and then add the additionally wanted packages in 
there.

Greetz
-- 
Josef Holzmayr
Software Developer Embedded Systems

Tel: +49 8444 9204-48
Fax: +49 8444 9204-50

R-S-I Elektrotechnik GmbH & Co. KG
Woelkestrasse 11
D-85301 Schweitenkirchen
www.rsi-elektrotechnik.de
———————————————
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Geschäftsführer: Dr.-Ing. Michael Sorg, Dipl.-Ing. Franz Sorg
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_____________________________________________________________
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Geschäftsführer: Dr.-Ing. Michael Sorg, Dipl.-Ing. Franz Sorg
USt-IdNr.: DE 128592548

Re: How to strip down my Yocto Linux?

[Burton, Ross]

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First, the core images are examples; copy and paste the closest to what you
want and then modify the recipe.

If you want a really small image then start from core-image-minimal, but be
aware that is missing a lot of stuff you may actually want.

How to remove things depends on how they got installed in the first place.
Unless you have doc-pkgs in IMAGE_FEATURES then you shouldn't have any man
pages or documentation.  If the poco recipe installs sample code you don't
want then fix the recipe to put those in another package. etc etc.

Ross

On 2 August 2017 at 10:47, Bacheh Karaji <bachehkaraji@yahoo.com> wrote:

> I would like to strip down my Yocto Linux before put in it to flash.
> Unneeded software, man pages, POCO sample codes and other documentation
> just waste resource, especially on the i.MX28 EVK with only 128MB flash.
>
> My local.conf file looks following:
>
>
>
>
>
> *$ gedit conf/local.conf & ... IMAGE_INSTALL_append = " poco nginx
> canutils vsftpd curl fcgi spawn-fcgi net-snmp util-linux ubiattach-klibc
> ubimkvol-klibc ubiformat-klibc minicom net-tools zeroconf avahi-autoipd
> mtd-utils u-boot-fw-utils ethtool" ... I bitbake the image
> "core-image-base"*.
>
> I was wondering, is there a way that I can delete all of the Unneeded
> files?
>
> Can somebody help me howto strip down my Yocto Linux?
>
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>
>

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Re: How to strip down my Yocto Linux?

[Khem Raj]

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On Wed, Aug 2, 2017 at 3:35 AM Burton, Ross <ross.burton@intel.com> wrote:

> First, the core images are examples; copy and paste the closest to what
> you want and then modify the recipe.
>
> If you want a really small image then start from core-image-minimal, but
> be aware that is missing a lot of stuff you may actually want.
>

And use poky-tiny for distro reference to build up your own

>
> How to remove things depends on how they got installed in the first
> place.  Unless you have doc-pkgs in IMAGE_FEATURES then you shouldn't have
> any man pages or documentation.  If the poco recipe installs sample code
> you don't want then fix the recipe to put those in another package. etc etc.
>
> Ross
>
> On 2 August 2017 at 10:47, Bacheh Karaji <bachehkaraji@yahoo.com> wrote:
>
>> I would like to strip down my Yocto Linux before put in it to flash.
>> Unneeded software, man pages, POCO sample codes and other documentation
>> just waste resource, especially on the i.MX28 EVK with only 128MB flash.
>>
>> My local.conf file looks following:
>>
>>
>>
>>
>>
>> *$ gedit conf/local.conf & ... IMAGE_INSTALL_append = " poco nginx
>> canutils vsftpd curl fcgi spawn-fcgi net-snmp util-linux ubiattach-klibc
>> ubimkvol-klibc ubiformat-klibc minicom net-tools zeroconf avahi-autoipd
>> mtd-utils u-boot-fw-utils ethtool" ... I bitbake the image
>> "core-image-base"*.
>>
>> I was wondering, is there a way that I can delete all of the Unneeded
>> files?
>>
>> Can somebody help me howto strip down my Yocto Linux?
>>
>> --
>> _______________________________________________
>> yocto mailing list
>> yocto@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto
>>
>>
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>

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