[Bug 45587] New: SWIG always runs even in ninja lldb, generation fails with 2.0.10

Bug ID 45587
Summary SWIG always runs even in ninja lldb, generation fails with 2.0.10
Product lldb
Version unspecified
Hardware PC
OS Linux
Status NEW
Severity normal
Priority P
Component All Bugs
Assignee lldb-dev@lists.llvm.org
Reporter erich.keane@intel.com
CC jdevlieghere@apple.com, llvm-bugs@lists.llvm.org

This page claims SWIG version 2 or newer is supported:
[https://lldb.llvm.org/resources/build.html](https://lldb.llvm.org/resources/build.html) and mentions that it is only
necessary to run the tests.

However, even when running "ninja lldb" it seems to try to generate the LLDB
Python wrapper.

I have SWIG 2.0.10: 
bash-4.2$ swig -copyright

SWIG Version 2.0.10
Copyright (c) 1995-1998
University of Utah and the Regents of the University of California
Copyright (c) 1998-2005
University of Chicago
Copyright (c) 2005-2006
Arizona Board of Regents (University of Arizona)

This is the error I get:

FAILED: tools/lldb/bindings/LLDBWrapPython.cpp tools/lldb/bindings/lldb.py
cd /workspaces/llvm-project/build/tools/lldb/bindings && /usr/bin/swig -c++
-features autodoc -I/workspaces/llvm-project/lldb/include
-I/ekeane1/workspaces/llvm-project/lldb/bindings -D__STDC_LIMIT_MACROS
/workspaces/llvm-project/build/tools/lldb/bindings -c++ -shadow -python
-threads -o
Error: Syntax error in input(3).

That file number is:
496   Py_buffer &operator=(const Py_buffer_RAII &) = delete;

If this is a SWIG bug, we should change the documentation to match the versions
that actually build.  Additionally, either we need to make SWIG only necessary
when running the tests, or alter this line: "If you want to run the test suite,
you’ll need to build LLDB with Python scripting support.".