[lldb-dev] lldb-3.8.1 prebuilt binary for windows7

Mon Nov 28 09:35:27 PST 2016

Windows has no concept of a default python installation, and I can’t be sure what version of python my users have, if any, so I need to solve 2 problems:

1)      Where is python when I’m building?

2)      Where is python when I’m running?

To solve #1, I set LLDB_RELOCATABLE_PYTHON to TRUE, and PYTHON_HOME to my python installation (on our buildbots, c:/python351).

#2 only needs to be solved if the machine you’re running on doesn’t have the same python installation, in PYTHON_HOME above. To do that, I’ve added code to set a cmake path LLDB_DEFAULT_PYTHONHOME, which I pass as a macro down to InitializePythonHome in source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp, and call Py_SetPythonHome with it. My installations have the python dll and python library directory. We put the library in <install>/lib/python35 and the dll in <install>/bin.

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From: Zachary Turner [mailto:zturner at google.com] 
Sent: Wednesday, November 23, 2016 12:40 PM
To: Vadim Chugunov <vadimcn at gmail.com>
Cc: Reid Kleckner <rnk at google.com>; Hans Wennborg <hans at chromium.org>; LLDB <lldb-dev at lists.llvm.org>; Ted Woodward <ted.woodward at codeaurora.org>
Subject: Re: [lldb-dev] lldb-3.8.1 prebuilt binary for windows7

I believe the way to fix this is going to be building LLDB for the installer with LLDB_RELOCATABLE_PYTHON=1 at CMake time

+Ted, since I believe he is one of the few people currently using this flag.

On Wed, Nov 23, 2016 at 10:36 AM Vadim Chugunov <vadimcn at gmail.com <mailto:vadimcn at gmail.com> > wrote:

This is still broken in the October snapshot.   Do you know which script is used to build the Windows installer?

On Tue, Oct 11, 2016 at 6:24 PM, Zachary Turner <zturner at google.com <mailto:zturner at google.com> > wrote:

I think it is a problem with the way we built lldb.  I will look into what additional steps we need to take when making the prebuilt binary so that it works next time.

On Tue, Oct 11, 2016 at 6:20 PM Vadim Chugunov <vadimcn at gmail.com <mailto:vadimcn at gmail.com> > wrote:

Nope, that didn't help.

On Tue, Oct 11, 2016 at 5:16 PM, Zachary Turner <zturner at google.com <mailto:zturner at google.com> > wrote:

I may know what this is.  Can you try setting PYTHONPATH though to point to your Python 3.5 installation though and see if it fixes it?  (I don't think it will, but let's try anyway)

On Tue, Oct 11, 2016 at 4:59 PM Vadim Chugunov <vadimcn at gmail.com <mailto:vadimcn at gmail.com> > wrote:

It outputs 'c:\Program Files (x86)\LLVM\lib\site-packages', however the 'site-packages' directory does not exist.  Nor do I see '_lldb.pyd' anywhere else.  

'script import lldb' also fails, of course.

On Tue, Oct 11, 2016 at 4:01 PM, Zachary Turner <zturner at google.com <mailto:zturner at google.com> > wrote:

He said he did, so I don't know.  Vadim, can you elaborate?  When you run `lldb -P` from the command line, what do you see?

On Tue, Oct 11, 2016 at 4:00 PM Reid Kleckner via lldb-dev <lldb-dev at lists.llvm.org <mailto:lldb-dev at lists.llvm.org> > wrote:

I imagine that Hans doesn't have Python 3 installed on his system, so LLDB didn't autoconfigure with Python support.

On Sun, Oct 9, 2016 at 1:07 PM, Vadim Chugunov via lldb-dev <lldb-dev at lists.llvm.org <mailto:lldb-dev at lists.llvm.org> > wrote:

> Does the 4.0 binary not work for you? It is the first release that contains prebuilt lldb binary. 

Looks like the Python API is not included though.   Do you know why it was left out?

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