[lldb-dev] [Bug 46891] New: "import _lldb" doesn't work on Windows with Python 3.8+

[via lldb-dev]

https://bugs.llvm.org/show_bug.cgi?id=46891

            Bug ID: 46891
           Summary: "import _lldb" doesn't work on Windows with Python
                    3.8+
           Product: lldb
           Version: unspecified
          Hardware: All
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at lists.llvm.org
          Reporter: Tatyana.Krasnukha at synopsys.com
                CC: jdevlieghere at apple.com, llvm-bugs at lists.llvm.org

This happens when liblldb.dll depends on non-system libraries (e.g.
libxml2.dll).

To reproduce this issue, build LLDB with LibXML2 and run `python_d -c "import
_lldb"`.
The error will be "ImportError: DLL load failed while importing _lldb: The
specified module could not be found". Neither PATH nor PYTHONPATH makes a
difference.

Since version 3.8, Python stopped searching dlls in directories specified by
PATH.
Now such paths should be specified by calling `add_dll_directory()`
(https://docs.python.org/3.8/whatsnew/3.8.html#bpo-36085-whatsnew).

Seems like the function call should be placed in bindings/python.swig right
before importing _lldb, however, I don't see a way to determine paths to
dependencies there.

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