Dear ROOT,
I have encountered the following error:
Referenced from: /opt/local/libexec/root6/lib/root/libcppyy3_10.6.26.00.so
Reason: image not found
The problem is that this .so file is actually present on my system so I don’t know what’s going on here. I’m hoping that you can provide me with some insight on this matter.
Many Thanks
Rob
ROOT Version: 6.26/00 via Macports
Platform: Big Sur (MacOS), MacBook Pro with M1/ARM processor.
compiler: gcc11 11.2.0_1
This is a completely fresh macports. I’ve installed root6 and it doesn’t work in python and I get the following error.
I only have python 3.10 as it is a dependancy of the root 6 port.
In [1]: import ROOT
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
File /opt/local/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/cppyy/__init__.py:60, in <module>
59 try:
---> 60 importlib.import_module(libcppyy_mod_name)
61 except ImportError:
File /opt/local/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py:126, in import_module(name, package)
125 level += 1
--> 126 return _bootstrap._gcd_import(name[level:], package, level)
File <frozen importlib._bootstrap>:1050, in _gcd_import(name, package, level)
File <frozen importlib._bootstrap>:1027, in _find_and_load(name, import_)
File <frozen importlib._bootstrap>:1006, in _find_and_load_unlocked(name, import_)
File <frozen importlib._bootstrap>:674, in _load_unlocked(spec)
File <frozen importlib._bootstrap>:571, in module_from_spec(spec)
File <frozen importlib._bootstrap_external>:1176, in create_module(self, spec)
File <frozen importlib._bootstrap>:241, in _call_with_frames_removed(f, *args, **kwds)
ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/libcppyy3_10.so, 2): Library not loaded: @rpath/libcppyy_backend3_10.6.26.so
Referenced from: /opt/local/libexec/root6/lib/root/libcppyy3_10.6.26.00.so
Reason: image not found
During handling of the above exception, another exception occurred:
ImportError Traceback (most recent call last)
Input In [1], in <module>
----> 1 import ROOT
File /opt/local/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/ROOT/__init__.py:22, in <module>
19 # Prevent cppyy from filtering ROOT libraries
20 environ['CPPYY_NO_ROOT_FILTER'] = '1'
---> 22 import cppyy
23 if not 'ROOTSYS' in environ:
24 # Revert setting made by cppyy
25 cppyy.gbl.gROOT.SetBatch(False)
File /opt/local/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/cppyy/__init__.py:62, in <module>
60 importlib.import_module(libcppyy_mod_name)
61 except ImportError:
---> 62 raise ImportError(
63 'Failed to import {}. Please check that ROOT has been built for Python {}.{}'.format(
64 libcppyy_mod_name, major, minor))
66 # ensure 'import libcppyy' will find the versioned module
67 sys.modules['libcppyy'] = sys.modules[libcppyy_mod_name]
ImportError: Failed to import libcppyy3_10. Please check that ROOT has been built for Python 3.10
port installed | grep root
root6 @6.26.00_0+cocoa+davix+gccdevel+graphviz+gsl+opengl+python310+roofit+tmva+xml+xrootd (active)
root_select @1.3_0 (active)
xrootd @5.4.2_0+kerberos+python310+readline+ssl (active)
Thanks for your time
Welcome to the ROOT Forum! I think @etejedor can help with this
Hello,
Can you check for what Python version your ROOT was built for?
In particular, by running:
root-config --python-version
root-config --python3-version
root-config --python2-version
Hello,
rob-mac:~ robmac$ root-config --python-version
3.10.2
rob-mac:~ robmac$ root-config --python3-version
3.10.2
rob-mac:~ robmac$ root-config --python2-version
There wasn’t anything returned for --python2-version.
I hope that this is useful.
Thanks
The python version your ROOT was built with and the one that you are using seem to be the same (3.10), so I don’t know what the problem is.
@jonesc might know?
Otherwise, I’d propose that you try an alternative way of installation ROOT, e.g. conda:
I see the same with the macPorts installation. I’ll look into it when I can…
I just pushed an update to MacPorts that addresses this (and updates to 6.26.02 at the same time).
Issue appears to be that the root build is not correctly setting the @rpath entries in some binaries for the final installation path. I cannot say if this is a bug in the root build system, triggered by the specific build options we use in MacPorts, or just a but on the MacPorts side, but I am leaning towards the former.
In any case I’ve added a workaround to the MacPorts build to manually run install_name_tool to add the required @rpath entries to the binaries that are missing them.
Dear ROOT Devs,
I’m not getting any import ROOT errors in python anymore.
Thank you very much for your help.
Rob