There seems to be an DWARF to PDB converter here:

https://github.com/rainers/cv2pdb

Not sure how good it is or what the license looks like...

> On Apr 7, 2015, at 10:19 AM, Colin Riley <co...@codeplay.com> wrote:
> 
> I think that's what I used. Hence why I want lldb C# bindings! But yeah. 
> Horridly underdocumented.
> From: Zachary Turner
> Sent: ‎07/‎04/‎2015 18:10
> To: Colin Riley; lldb-dev@cs.uiuc.edu
> Subject: Re: [lldb-dev] [LLVMdev] PDB support in LLVM
> 
> Btw the python tools project doesn't use Dbgeng extensibility model, it's a 
> newer richer extensibility framework that is even less documented (most 
> people probably wouldn't even know it exists) but much more powerful. And 
> it's all in managed code, so you get the c# stuff for free.
> 
> But still, 4-5 weeks seems very aggressive 
> On Tue, Apr 7, 2015 at 9:48 AM Colin Riley <co...@codeplay.com> wrote:
> You could try extending the codeview and then relying on the ms linker to 
> emit a pdb from it (last time I checked it converts on the fly - this may 
> have changed recently, and what it converts may not be fully featured). 
> 
> The Debug Engine extensibility for visual studio is, as Zach says, not well 
> documented at all. Despite that, in the past I have had LLDB chatting in a 
> limited way to visual studio. It was incredibly messy, and the way I chose to 
> do it was go from Visual Studio -> c# -> c++/CLI -> C++ lldb api. Don't do it 
> that way if you attempt it: Create lldb C# bindings instead and go that 
> direction. I've been looking at that lately but it's a side project so cant 
> be relied on if you need it quickly.
> 
> As for the time frame, 4-5 weeks isn't going to get far given the lack of 
> documentation. The debug engine samples don't go far enough in terms of 
> requiring a native C++ environment.
> 
> Colin
> 
> 
> On 07/04/2015 17:25, Zachary Turner wrote:
>> It sounds like if you have a time frame of 4-5 weeks, you've got a tall 
>> order cut out for yourself.  I don't want to say impossible, but... that's 
>> pretty rough.
>> 
>> I think you've got two options:
>> 1) Try to figure out how to emit PDB.  The format is undocumented, so you're 
>> kind of on your own here.
>> 2) Try to figure out how to get Visual Studio to understand DWARF.  Visual 
>> Studio has a reasonably rich extensibility model which is also not very well 
>> documented, so you're probably on your own here as well.  You may want to 
>> have a look at PythonTools for Visual Studio.  It's entirely open source and 
>> adds Python debugging to Visual Studio.  Obviously you don't need to be able 
>> to debug Python, but it's the best source of documentation I know of for 
>> extending Visual Studio in this kind of way so maybe it will help.  If you 
>> end up doing this, it would be great if you could try to upstream it back to 
>> LLDB.  Visual Studio integration with LLDB would be nice to have.
>> 
>> On Mon, Apr 6, 2015 at 5:02 PM Rohan Bajaj <rohanbaja...@gmail.com> wrote:
>> Moving to lldb-dev per suggestion.
>> 
>> Using Visual Studio is only criteria for us. It could be DWARF or PDB.
>> 
>> But I need to implement this soon (4-5 weeks from now). What do you 
>> recommend?
>> 
>> Zachary do you also suggest using LLDB on Windows?
>> 
>> 
>> On Mon, Apr 6, 2015 at 4:35 PM, Zachary Turner <ztur...@google.com> wrote:
>> 
>> 
>> On Mon, Apr 6, 2015 at 4:16 PM Chandler Carruth <chandl...@google.com> wrote:
>> On Mon, Apr 6, 2015 at 3:46 PM Rohan Bajaj <rohanbaja...@gmail.com> wrote:
>> Is making PDB files for corresponding IR supported in LLVM latest version?
>> 
>> Not today.
>>  
>> 
>> After some searching I see llvm-pdbdump, but I want to annotate the IR with 
>> debug information so that when I write bitcode it has pdb information.
>> 
>> I've heard of CodeView, but it seems to be only for line information. I want 
>> variable values also.
>> 
>> I would be ok to use DWARF if Visual Studio could understand it using LLDB 
>> but I don't know how to do that or if it is support.
>> 
>> Zach (CC-ed) and others are actively working on making LLDB work well on 
>> Windows, including reading DWARF debug information on Windows and 
>> potentially integration with Visual Studio (although I think that is further 
>> away at the moment). However, further discussion might be better on the LLDB 
>> mailing lists.
>> 
>> It's worth pointing out that CodeView is **not** only for line information. 
>> It's for everything.  It's just that LLVM currently only understands a 
>> subset of CodeView record types related to line information.
>> 
>> 
>> 
>> 
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>> 
>> lldb-dev@cs.uiuc.edu
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> 
> -- 
> - Colin Riley
> Senior Director,
> Parallel/Graphics Debugger Systems
> 
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