[LLVMdev] LLVM and Windows?
Mikael Lyngvig
mikael at lyngvig.org
Sat Feb 19 22:03:12 PST 2011
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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