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Add the new Python instance to your environment:
Code Block language bash theme Confluence export PYTHON_ROOT=${LCLS_ROOT}/package/python/python2.7.13/linux-x86_64
Add the new Python binaries to the PATH environment variable:
Code Block language bash theme Confluence export PATH=${QT_HOME}/bin:${ORACLE_HOME}/bin:${PYTHON_ROOT}/bin:${PATH}
Add the new Python libraries and their dependencies (EPICS 64-bit, Matlab, etc.) to the LD_LIBRARY_PATH environment variable. This is to ensure that the new 64-bit versions of Python modules built against those dependencies will work:
Code Block language bash theme Confluence export LD_LIBRARY_PATH=${LCLS_ROOT}/matlab/2016b/extern/lib:${EPICS_BASE_RELEASE}/lib/linux-x86_64:${EPICS_EXTENSIONS}/lib/linux-x86_64:${EPICS_BASE_TOP}/base-cpp-R4-6-0/lib/linux-x86_64:${PYTHON_ROOT}/lib:${PYTHON_ROOT}/build/Python2.7.13/Lib:${LD_LIBRARY_PATH}
Set the PYTHONPATH environment variable. This is to ensure that there are no false positives when testing applications, since the current PYTHONPATH may still have access to older versions of Python modules and override the new libraries:
Info title Note The ${EPICS_BASE_TOP}/base-cpp-R4-6-0/pvaPy/lib/python/2.7/linux-x86_64 directory contains EPICS V4 Python modules.
The /usr/local/lcls/tools/python/toolbox directory contains SLAC-maintained Python modules.Code Block language bash theme Confluence export PYTHONPATH=${EPICS_BASE_TOP}/base-cpp-R4-6-0/pvaPy/lib/python/2.7/linux-x86_64:${LCLS_ROOT}/tools/python/toolbox
[Optional] If your application(s) import the "cx_Oracle" module, add the following to your environment:
Code Block language bash theme Confluence export PATH=${ORACLE_HOME}/bin:${PATH} export LD_LIBRARY_PATH=${ORACLE_HOME}/lib:${LD_LIBRARY_PATH}
[Optional] If your application(s) import "PyQt", "PyQwt", or any other Python modules that depend on Qt4 64-bit, add the following to your environment:
Code Block language bash theme Confluence export QT_HOME=${LCLS_ROOT}/package/Qt/Qt-4.8.6/linux-x86_64 export PATH=${QT_HOME}/bin:${PATH} export LD_LIBRARY_PATH=${QT_HOME}/lib:${LD_LIBRARY_PATH}
If your application uses Qt5 64-bit, add the following to your environment (needs updated gcc and glibc):Code Block language bash theme Confluence export LD_LIBRARY_PATH=${LCLS_ROOT}/package/gcc/gcc-4.9.4/lib:${LD_LIBRARY_PATH} export LD_LIBRARY_PATH=/usr/local/lcls/package/gcc/gcc-4.9.4/lib64:$LD_LIBRARY_PATH export QT_HOME=${LCLS_ROOT}/package/Qt/Qt-5.9.1/linux-x86_64 export PATH=${QT_HOME}/bin:${PATH} export LD_LIBRARY_PATH=${QT_HOME}/lib:${LD_LIBRARY_PATH}
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