[LLVMdev] VS2005 compatibility

Don Williamson don.williamson at yahoo.com
Tue Nov 8 06:42:42 PST 2011

Hi Francois,

I haveĀ allĀ licensed versions of VS at my disposal (the benefits of being a former MS employee) but I'm currently using VS2005 due to specific technical reasons that I can't disclose.

The "Getting Started" page states support of 2005 SP1 which, if it's not being maintained, is not true and should be updated.

- Don

----- Original Message -----
From: Francois Pichet <pichet2000 at gmail.com>
To: Don Williamson <don.williamson at yahoo.com>
Cc: "llvmdev at cs.uiuc.edu" <llvmdev at cs.uiuc.edu>
Sent: Tuesday, November 8, 2011 1:30 PM
Subject: Re: [LLVMdev] VS2005 compatibility

On Tue, Nov 8, 2011 at 8:02 AM, Don Williamson <don.williamson at yahoo.com> wrote:
> OK, it's not that bad - it's even better than before :)
> The main issue is RWMutex.inc and the use of PSRWLOCK. This requires _WIN32_WINNT to be >= 0x0600, which is not true for VS2005 SP1.
> Rather than #define _WIN32_WINNT 0x0600 (the file notes that this should build on all Win32 variants), extending the copy/paste of winbase.h to this works fine:
> #if defined(__MINGW32__) || _WIN32_WINNT < 0x0600
> I'm still getting random crashes running llvm-tblgen.exe which I think is a known issue (I only need clang libs to build successfully so this isn't fatal for me).

I am not aware of anyone who regularly build LLVM/clang with MSVC 2005
so you might run into some problems.

I suggest you update to MSVC 2010 (or 2008 will do). There is a
buildbot for MSVC 2010 so issues are generally fixed quite fast. Also
LLVM compile just fine if you use the free MSVC Express edition so
having to pay for a license should not be problem.

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