[yocto] Rocko: how to remove python3 from target's rootfs

Tue Jun 26 14:26:36 PDT 2018

Hi Martin,

I've downloaded bind_9.10.6.bb recipe and applied the patch you pointed, but do_install fails

error: invalid Python installation: unable to open /home/carlos/develop/allegro/build-atmel/tmp/work/cortexa5hf-vfp-poky-linux-gnueabi/bind/9.10.6-r0/recipe-sysroot/usr/lib/python3.5/config-3.5m/Makefile (No such file or directory)
Makefile:465: recipe for target 'install' failed
make[2]: *** [install] Error 1
make[2]: Leaving directory '/home/carlos/develop/allegro/build-atmel/tmp/work/cortexa5hf-vfp-poky-linux-gnueabi/bind/9.10.6-r0/build/bin/python'
Makefile:114: recipe for target 'install' failed
make[1]: *** [install] Error 1
make[1]: Leaving directory '/home/carlos/develop/allegro/build-atmel/tmp/work/cortexa5hf-vfp-poky-linux-gnueabi/bind/9.10.6-r0/build/bin'
Makefile:120: recipe for target 'install' failed
make: *** [install] Error 1
ERROR: oe_runmake failed

I've also tried the patch from Armin Kuster (Patch ID 151778), bind_9.12.1.bb builds fine, but dhcp_4.3.6.bb do_compile fails

./.libs/libomapi.so: undefined reference to `POST'
collect2: error: ld returned 1 exit status
Makefile:433: recipe for target 'svtest' failed
make[1]: *** [svtest] Error 1
make[1]: Leaving directory '/home/carlos/develop/allegro/build-atmel/tmp/work/cortexa5hf-vfp-poky-linux-gnueabi/dhcp/4.3.6-r0/build/omapip'
Makefile:464: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1
ERROR: oe_runmake failed
WARNING: exit code 1 from a shell command.

This error is similar to what is posted here: 
http://errors.yoctoproject.org/Errors/Details/180628/

Could you clarified if those errors were already handled, so I can fetch the fix?

Thanks,
Carlos

-----Original Message-----
From: Martin Hundebøll <martin at geanix.com> 
Sent: Tuesday, June 26, 2018 2:59 AM
To: Bejar-Colonia, Carlos <carlos.bejar-colonia at philips.com>; Khem Raj <raj.khem at gmail.com>
Cc: Yocto Project <yocto at yoctoproject.org>
Subject: Re: [yocto] Rocko: how to remove python3 from target's rootfs

Hi Bejar,

On 2018-06-25 22:02, Bejar-Colonia, Carlos wrote:
> Looks like the dhcp dependency is explicit: dhcp->bind->python3 
> recipes-connectivity/dhcp/dhcp.inc
> 	DEPENDS = "openssl bind"
> recipes-connectivity/bind/bind_9.10.5-P3.bb
> 	RDEPENDS_${PN} = "python3-core"
> 
> In the build area: dhcp/4.3.6-r0/packages-split/dhcp-client.shlibdeps
> 	dhcp-libs (>= 4.3.6)
> 	bind (>= 9.10.5-P3)
> 	glibc (>= 2.26)
> 
> Does it mean that python3 cannot be removed from target rootfs?
> 
> On the other hand, I see this file in rootfs: /usr/sbin/dnssec-checkds, which requires python3 (#! /usr/bin/python3).
> I believe this file gets installed from bind_9.10.5-P3.bb
> 
> do_install_append() {
>          sed -i -e '1s,#!.*python3,#! /usr/bin/python3,' 
> ${D}${sbindir}/dnssec-coverage ${D}${sbindir}/dnssec-checkds }
> 
> How can I move this file to a different package?

I had the same issue a while back, and submitted this patch:
https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.openembedded.org%2Fpatch%2F148257%2F&data=02%7C01%7Ccarlos.bejar-colonia%40philips.com%7C5bf80069779142d49a9208d5db324507%7C1a407a2d76754d178692b3ac285306e4%7C0%7C0%7C636655931318995045&sdata=2QBW2XS2r7Kx3mQdTN%2BPVQpCvp%2Bh0TI7Ql6HPJymlBU%3D&reserved=0

Since then Armin incorporated my patch with his version upgrade here:
https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.openembedded.org%2Fpatch%2F151778%2F&data=02%7C01%7Ccarlos.bejar-colonia%40philips.com%7C5bf80069779142d49a9208d5db324507%7C1a407a2d76754d178692b3ac285306e4%7C0%7C0%7C636655931318995045&sdata=yIMyeknuFenkNPGtG7ItvX6WzNnhhNbF1Exoca9vmNw%3D&reserved=0

If you maintain your own meta layer, you can either create a bbappend file to implement the package config feature, or you can simply add the updated version from Armin.

// Martin

> -----Original Message-----
> From: Khem Raj <raj.khem at gmail.com>
> Sent: Friday, June 22, 2018 11:33 AM
> To: Bejar-Colonia, Carlos <carlos.bejar-colonia at philips.com>
> Cc: Yocto Project <yocto at yoctoproject.org>
> Subject: Re: [yocto] Rocko: how to remove python3 from target's rootfs
> 
> On Fri, Jun 22, 2018 at 8:17 AM Bejar-Colonia, Carlos <carlos.bejar-colonia at philips.com> wrote:
>>
>> Hello Yocto Team,
>>
>>
>>
>> I’ve upgraded my Yocto system from Morty to Rocko and I’ve noticed 
>> that python3 gets installed in the rootfs, which I don’t want (it 
>> takes a lot disk space)
>>
>> I’ve noticed that when I add dhcp-client package to the rootfs (CORE_IMAGE_EXTRA_INSTALL += "dhcp-client"), python3 gets installed as well.
>>
>> However, with Morty, python3 does not get installed in the rootfs after adding dhcp-client pakage.
>>
>>
>>
>> Probably someone has already done this, but I was not able to figure it out. I tried: IMAGE_INSTALL_remove += "python3-core", didn’t help.
>>
>> Any hints on how to remove python3 from the target’s rootfs (without removing dhcp-client)?
> 
> when there are scripts in packages which requires a certain kind of interpreter e.g. perl. python. bash, sh etc. system can autodetect that if interpreter is specified in first line of script and add the appropriate runtime dependency, since this script otherwise will be useless on target.
> 
> I suspect build for dhcp is adding such a file into dhcp-client package which might be resulting in this implicit dep.
> 
> So please check it in the build area for dhcp especially under 
> packages-split/dhcp-client
> 
> for any such scripts.
> 
> if there are any and you find that these scripts are not required for 
> normal functioning of dhcp-client on target then move this script out 
> into another package where it might be more appropriate, that can 
> eliminate this rdep
>>
>>
>>
>> Thanks,
>>
>> Carlos
>>
>>
>>
>>
>>
>>
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--
Kind regards,
Martin Hundebøll
Embedded Linux Consultant

+45 61 65 54 61
martin at geanix.com

Geanix IVS
DK39600706