About LD_LIBRARY_PATH and LD_PRELOAD

[qmj123]

Describe the problem
How to solve the following problems without setting the LD_PRELOAD parameter and How to set environment variables in Java's Jep.
jep.JepException: <class 'ImportError'>: /xxx/python/lib/python3.10/lib-dynload/_posixsubprocess.cpython-310-x86_64-linux-gnu.so: undefined symbol: PyTuple_Type

Environment (please complete the following information):

• OS Platform, Distribution, and Version:
• Python Distribution and Version: 3.10
• Java Distribution and Version: jdk11
• Jep Version:4.1.1
• Python packages used (e.g. numpy, pandas, tensorflow):numpy

[Dynasty-develop]

I have same problem. I can`t solve this for a week.

[Dufgui]

me too

[bsteffensmeier]

In some cases this can be solved by setting PYTHONHOME or using PyConfig.setPythonHome(). In some cases LD_PRELOAD may be required when other native python libraries depend on libpython but do not declare that dependency as part of their library. This is unfortunately a common way of building native python extensions so they can be used with a statically linked python executable. There is nothing jep can do to solve this since it is a problem with libraries that are not part of jep.

For example in the case of _posixsubprocess.cpython-310-x86_64-linux-gnu.so, it is looking for a symbol that is defined in libpython. If _posixsubprocess.cpython-310-x86_64-linux-gnu.so declares a dependency on libpython then the symbol would be available to it. Since the symbol is not available I can only assume it did not declare a dependency. You can check the dependencies on linux by running ldd /xxx/python/lib/python3.10/lib-dynload/_posixsubprocess.cpython-310-x86_64-linux-gnu.so The correct solution is for _posixsubprocess.cpython-310-x86_64-linux-gnu.so to declare a dependency on libpython.