[LLVMdev] LLVM and Windows?

[nullnull]

I'm actively working on Windows with LLVM/clang (not directly contributing
yet).

First of all, it does compile on Windows (only tested in Visual Studio
2010). But, there are still many problems:

(1) x86-64 won't compile as far as I know. CMake generates 64-bit soultion,
but one project is missing. But, 32-bit solution compiles safely.
(2) Although safe compiliation, there are many broken/unimplemented features
as of now. I can't detail everything. Some of them are very serious.

Currently, LLVM/clang on Windows is very experimental. I'm managed to make
it work.

I believe the future of LLVM/clang on Windows is very promising. I'm trying
to report many bugs as much as I can, and also wish to contribute Windows
support!

On Sun, Feb 20, 2011 at 1:03 AM, Mikael Lyngvig <mikael at lyngvig.org> wrote:

> Hi,
>
> This may be a daft question, but I have just begun taking a serious look at
> LLVM for a project that I am working on.  Knowing myself pretty well, the
> probability that I ever complete the project is infinitesimal.  I am saying
> this so you don't jump up out of your chair, yelling "HOORAY!" because I am
> considering to use LLVM.  Think of me as an academic student with too much
> time on his hands, who is considering if he dares embark on the adventure of
> getting to know LLVM.  The way I see it, my life is going to be much easier
> if I can delegate the responsibility for generating good code for a number
> of targets to you guys and instead focus on what I am trying to do.  Also, I
> particularly like the aspect of global optimizations (link-time
> optimizations) in LLVM - they're one of the selling features of my project.
>
> The project is a new programming language (http://www.braceless.org) for
> which I have been contemplating writing my own backends, but the more I
> think of it, the less I like the idea.  I know you guys from earlier where I
> posted a suggestion for an alternate implementation of exceptions (one that
> uses only a single bit to indicate whether an exception has occured and then
> uses the ordinary return value registers for the pointer to the exception
> instance, in the rare event that an exception really happens) and it seems
> to me that there's a natural match between what you do and what I'd like to
> do.
>
> Now I at least have two problems: 1) I've written my "compiler" (language
> parser, really) in C# and 2) I don't seem to be able to find any procedures
> on building LLVM on Windows.  The first problem is easy to solve; I'll
> gladly recode my project in C++ just to get to use LLVM.  The other problem
> is a bit bigger, though: LLVM's Windows support.
>
> Do you plan to offer "true" Windows support - i.e. release
> binaries/libraries for Windows and offer a build system that can be used on
> Windows?  Or is LLVM always going to be a mostly *nix-only project?
>
> IF LLVM already supports building on Windows, please don't flame me but
> simply tell me in nice words that I am a moron and how to build LLVM for
> Windows.  I am mostly interested in native x86_64 support for Windows.
>
> If there's anything I can do to help, please don't hesitate to let me
> know.  I am on and off coding on portable build system written in C# for
> .NET/Mono (portable to a wide variety of hosts), which I could perhaps some
> day finish up and use to build the Windows release of LLVM.  Perhaps I can
> be of some value as a real-life tester of the Win64 backend?  My initial
> goal is to target Windows x64 first and then later on Windows x86, PPC, and
> so on.
>
> P.S. I have a Windows 7 x64 box and a Debian 6.0 Linux 64-bit PPC box (an
> ancient iMac G5 converted to a Linux box).  I do know Linux and CAN work
> under Linux, but I prefer to use Windows because of the popularity of this
> platform and the fact that I have spent the last 20+ years working primarily
> on the PC/Windows platform.
>
> P.P.S. I love writing documentation so I wouldn't mind putting together
> some docs on how to get flying with LLVM on Windows.
>
>
> Sincerely,
> Mikael Lyngvig
>
>
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>
>
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