[Qgis-user] Install QGIS 3.x on Ubuntu16.04

[Zhang Qun]

Hi all, thanks for all your replies.

I finally managed to install from ubuntugis-ltr repo (ver. 3.4.7) and when
I encountered the configure error about OpenCL with qgis-providers I just
deleted the libOpenCL.so.1. And it worked.

Ethan

On Tue, Apr 23, 2019 at 5:30 PM Andre Joost <andre+joost at nurfuerspam.de>
wrote:

> Hi,
>
> you get stuck because qgis 3.4.6 from qgis.org is built against GRASS
> 7.6.0 from the ubuntugis-unstable ppa, but that ppa has upgraded to
> Grass 7.6.1 in the meantime.
>
> This should be resolved by the next QGIS point release.
>
> Alternatively, you can remove the qgis.org stuff from your sources list,
> purge and autoremove the 3.4.4 packages, and install QGIS 3.4.6 from the
> ubuntugis-unstable ppa only.
>
> HTH,
> Andre Joost
>
> Am 23.04.19 um 05:13 schrieb Zhang Qun:
> > Hi
> > I know Ubuntu16.04 is a bit old for QGIS now but since our software is
> all
> > built on Ubuntu16.04 so I tried to install QGIS 3.x on it. Below is my
> > tries but with no luck. Any help?
> >
> > *1. using https://qgis.org/ubuntugis <https://qgis.org/ubuntugis>
> > repository*
> > $ sudo apt install qgis python3-qgis qgis-plugin-grass
> > Reading package lists... Done
> > Building dependency tree
> > Reading state information... Done
> > E: Unable to locate package python3-qgis
> >
> > $ sudo apt install qgis python-qgis qgis-plugin-grass
> > The following packages have unmet dependencies:
> >   qgis-plugin-grass : Depends: +grass760 but it is not installable
> > E: Unable to correct problems, you have held broken packages.
> >
> > *2. using http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu
> > <http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu>*
> > $ sudo apt install qgis python3-qgis qgis-plugin-grass
> > Setting up qgis-providers (3.4.6+dfsg-1~xenial1) ...
> > /usr/lib/qgis/crssync:
> > /usr/local/cuda-8.0/targets/x86_64-linux/lib/libOpenCL.so.1: no version
> > information available (required by /usr/lib/libqgis_core.so.3.4.6)
> > /usr/lib/qgis/crssync:
> > /usr/local/cuda-8.0/targets/x86_64-linux/lib/libOpenCL.so.1: no version
> > information available (required by /usr/lib/libqgis_core.so.3.4.6)
> > /usr/lib/qgis/crssync:
> > /usr/local/cuda-8.0/targets/x86_64-linux/lib/libOpenCL.so.1: no version
> > information available (required by /usr/lib/libqgis_core.so.3.4.6)
> > /usr/lib/qgis/crssync: relocation error: /usr/lib/libqgis_core.so.3.4.6:
> > symbol clCreateCommandQueueWithProperties, version OPENCL_2.0 not defined
> > in file libOpenCL.so.1 with link time reference
> > dpkg: error processing package qgis-providers (--configure):
> >   subprocess installed post-installation script returned error exit
> status
> > 127
> >
> > $ sudo apt install qgis python-qgis qgis-plugin-grass
> > The following packages have unmet dependencies:
> >   python-qgis : Depends: python-qgis-common (= 2.18.28+dfsg-1~xenial1)
> but
> > it is not going to be installed
> > E: Unable to correct problems, you have held broken packages.
> >
> > Best regards,
> > Zhang Qun
> >
> >
> >
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