From a user at CERN, I have the following bug report below. He tries to use g4py, following instructions. He is using a read only installation of Geant4, patch03 for 9.6 in/afs/cern.ch/sw/lcg/external/geant4/10.0.p03/share/environments/g4py , and obviously one must not run ./configure in a read only directory. The start of the report: in order to get started with using g4py, I try to follow the instructions given here: https://geant4.web.cern.ch/geant4/UserDocumentation/UsersGuides/ForApplicationDeveloper/html/apas07.html ...but it fails. Seems to be something wrong with "boost"... This is what I do: source /afs/cern.ch/sw/lcg/external/geant4/10.0.p03/x86_64-slc6-gcc47-opt/bin/geant4.csh cd /afs/cern.ch/sw/lcg/external/geant4/10.0.p03/share/environments/g4py ./configure linux64 --with-g4install-dir=/afs/cern.ch/sw/lcg/external/geant4/10.0.p03/x86_64-slc6-gcc47-opt/ Checking for system type ... linuxx8664gcc Checking for prefix ... /afs/cern.ch/sw/lcg/external/geant4/10.0.p03/share/environments/g4py Checking for lib dir ... /afs/cern.ch/sw/lcg/external/geant4/10.0.p03/share/environments/g4py/lib Checking for G4 include dir ... /afs/cern.ch/sw/lcg/external/geant4/10.0.p03/x86_64-slc6-gcc47-opt//include/Geant4 Checking for G4 lib dir ... /afs/cern.ch/sw/lcg/external/geant4/10.0.p03/x86_64-slc6-gcc47-opt//lib64 Checking for G4 libs are shared libraray ... ok Checking for Python include dir (pyconfig.h) ... /usr/include/python2.6 Checking for Python lib dir ... /usr/lib64 Checking for Boost include dir (boost/python.hpp) ... /usr/include Checking for Boost version ... ./configure: line 301: conftest.cc: Read-only file system