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Install PyROOT with python3.6 on Ubuntu 16.04

Dear all,

After trying several solutions found in this forum and StackOverflow without success I need your help. I have tried to install root.6.22 on ubuntu 16.04 (personal laptop), python 3.6 installed, cmake 3.10.2 and gcc 7.5.0. At the moment, the problem I’m having is the following


which I get after setting PYTHON_EXECUTABLE to the path where my python3.6 is

I found that it could have been that the development package was missing, however

arturo@arturo:ROOT$ sudo apt-get install python3.6-dev
[sudo] password for arturo: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3.6-dev is already the newest version (3.6.9-1~18.04ubuntu1.4).
0 upgraded, 0 newly installed, 0 to remove and 112 not upgraded.

So, I have no further idea of what the problem could be.
Thanking you in advance,
A.

ROOT Version: 6.22
Platform: Ubuntu 16.04
Compiler: gcc 7.5.0


Hello,
Can you try with a newer cmake version? The Python search for cmake >=3.14 has a different logic that I would expect to work if the Python development package is there.
Cheers,
Enric

1 Like
1 Like

Also, there should be no need to specify PYTHON_EXECUTABLE, CMake should be able to find the Python installation if it’s in system directories.

1 Like

Hi,
Apologies for the late reply. I somehow didn’t receive the notification. I tried what it suggested there with the Kitware. However, after running
arturo@arturo:Downloads$ sudo ./kitware-archive.sh

I get the following output

Hit:1 http://ppa.launchpad.net/malteworld/ppa/ubuntu bionic InRelease
Hit:2 http://de.archive.ubuntu.com/ubuntu bionic InRelease                                                                                                            
Hit:3 http://dl.google.com/linux/chrome/deb stable InRelease                                                                                                          
Hit:4 http://de.archive.ubuntu.com/ubuntu bionic-updates InRelease                                                                                                    
Hit:5 https://repo.skype.com/deb stable InRelease                                                                                                                     
Hit:6 https://download.virtualbox.org/virtualbox/debian bionic InRelease                                                                                              
Hit:8 http://ppa.launchpad.net/otto-kesselgulasch/gimp/ubuntu bionic InRelease                                                                                        
Hit:9 http://packages.microsoft.com/repos/code stable InRelease                                                                                                       
Hit:10 http://de.archive.ubuntu.com/ubuntu bionic-backports InRelease                                                                                                 
Get:11 https://desktop-download.mendeley.com/download/apt stable InRelease [2.456 B]                                                                                  
Hit:12 http://security.ubuntu.com/ubuntu bionic-security InRelease                                                                                                    
Ign:7 https://cernbox.cern.ch/cernbox/doc/Linux/repo/Ubuntu_18.04  InRelease                                                                                          
Get:13 https://cernbox.cern.ch/cernbox/doc/Linux/repo/Ubuntu_18.04  Release [973 B]                                                                                   
Get:14 https://cernbox.cern.ch/cernbox/doc/Linux/repo/Ubuntu_18.04  Release.gpg [836 B]                                                                               
Get:16 https://apt.kitware.com/ubuntu xenial InRelease [6.801 B]                                                                       
Err:16 https://apt.kitware.com/ubuntu xenial InRelease                                                                                 
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DE19EB17684BA42D
Hit:15 https://packagecloud.io/github/git-lfs/ubuntu bionic InRelease
Reading package lists... Done 
W: Conflicting distribution: http://de.archive.ubuntu.com/ubuntu bionic InRelease (expected bionic but got stable)
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't support architecture 'i386'
W: Skipping acquire of configured file 'restricted/binary-i386/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/binary-amd64/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/i18n/Translation-en' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/i18n/Translation-en_US' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/dep11/Components-amd64.yml' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/dep11/icons-48x48.tar' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/dep11/icons-64x64.tar' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'restricted/cnf/Commands-amd64' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'restricted' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/binary-i386/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/binary-amd64/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/i18n/Translation-en' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/i18n/Translation-en_US' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/Components-amd64.yml' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/icons-48x48.tar' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/icons-64x64.tar' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/cnf/Commands-amd64' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/binary-i386/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/binary-amd64/Packages' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/i18n/Translation-en' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/i18n/Translation-en_US' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/Components-amd64.yml' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/icons-48x48.tar' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/icons-64x64.tar' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/cnf/Commands-amd64' as repository 'http://de.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
N: Skipping acquire of configured file 'contrib/binary-i386/Packages' as repository 'https://download.virtualbox.org/virtualbox/debian bionic InRelease' doesn't support architecture 'i386'
E: Repository 'https://cernbox.cern.ch/cernbox/doc/Linux/repo/Ubuntu_18.04  Release' changed its 'Origin' value from 'obs://s2.owncloud.com/ownbrander:Qt562:cernbox/Ubuntu_18.04' to 'https://minio.owncloud.services/clients/build-linux/${DRONE_BUILD_NUMBER}/repo/'
E: Repository 'https://cernbox.cern.ch/cernbox/doc/Linux/repo/Ubuntu_18.04  Release' changed its 'Label' value from 'ownbrander:Qt562:cernbox' to 'repo'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
W: GPG error: https://apt.kitware.com/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DE19EB17684BA42D
E: The repository 'https://apt.kitware.com/ubuntu xenial InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

And after sudo apt-get install cmake I get that the installed cmake is the newest version, still 3.10.2. I tried to add the public key executing sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys DE19EB17684BA42D but this didn’t change anything.
Am I missing something obious?
Thanks for all the help,
A.

Hi,
I’d install a recent CMake version from:

https://cmake.org/download/

and try to build ROOT with that one.