Enable PyROOT and Install rootpy

ROOT
1

Hi,
I have installed ROOT 5.34/30 some time ago.

Now I want to enable PyROOT and then install rootpy.

To install PyROOT I have to run
./configure [–with-python-incdir=][–with-python-libdir=>dir>]

according to https://root.cern.ch/root/htmldoc/guides/users-guide/ROOTUsersGuide.html#python-and-ruby-interfaces

So I have typed in the Ubuntu terminal
find / -name “libpython*.so*” -o -name “libpython*.dylib*”

and I obtained
/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0
/usr/lib/x86_64-linux-gnu/libpython2.7.so
/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1
/usr/lib/x86_64-linux-gnu/libpython3.5m.so

Then I typed
find / -name ‘Python.h’

and I obtained
/usr/include/python2.7/Python.h
/usr/include/python3.5m/Python.h

So, in the folder “root” which I get after decompress the root_v5.34.30.source.tar.gz file, I typed

./configure [–with-python-incdir=/usr/include/python2.7/Python.h][–with-python-libdir=/usr/lib/x86_64-linux-gnu/libpython2.7.so]

but I received the following error:

bash: arch: No such file or directory

On the other hand, if I try
git clone git://github.com/rootpy/rootpy.git
python setup.py install --user

I get

ROOT cannot be imported. Is ROOT installed with PyROOT enabled?

How Can I enable PyROOT and then install rootpy?

Thank you very much in advance.

2

Hi Laura,

could you try a recent version of ROOT, for example 6.12.04 ?

Cheers,
D

3

Hi Danilo, Thank you for your answer.
I have this earlier version of Root because I am using it in another software (The offline software framework of the Pierre Auger Observatory)

4

Hi Laura,

I see. I understand the limitation but I cannot but recommend to move to a recent version of ROOT: 5.34.30 dates 2015, the 5 series is frozen since years. Note that we can help you with the technical aspects of the migration as we did for other (LHC) experiments.
Said that, let’s try out a workaround: did you try one of the binary packages that you can find here or one of the central installations on afs?

Cheers,
Danilo

5

Hi Danilo, I understand, I will try to move to a newer version as soon as possible.
Meanwhile, I didnt try the binary packages, since I have Ubuntu 16.04 LTS and I dont find the bin files for this distribution in the URL

6

the flags are called “dir” as they expect the directories, not the files; i.e. /usr/include/python2.7 and /usr/lib/x86_64-linux-gnu, not the .h and .so. Also, make sure that that python2 is the first “python” executable in $PATH.

Aside, python is enabled by default and normally the script can pick up the include and library paths from the location of the executable. Did you try to just run “configure”?