[LLVMdev] Fwd: Compiling to Win32

Tom Primožič tom.primozic at gmail.com
Wed Dec 26 02:34:39 PST 2007

Hello! I have previously posted this question on llvm-bugs, but I was
redirected and asked to post to llvmdev, so I'm resending this message to
this mailing list.

I am interested in LLVM, particularly for the implementation of a
programming language, and have been looking at the LLVM documentation

However, I was wondering what exactly do these two lines, extracted from the
Portability and Supported Platforms

   - Intel and AMD machines running on Win32 using MinGW libraries
   - Intel and AMD machines running on Win32 with the Cygwin libraries
   (limited support is available for native builds with Visual C++).

Does this mean that LLVM cannot produce Win32 application independently? So
that I can not use it (for example, from an IDE) without installing
third-party libraries? Do these libraries need to be distributed along with
the generated executables?

Please help me. I would like to understand exactly what I need to (i)
compile a native, complete, optimized program executable (from source code
to LLVM internal representation using my front-end, then optimizing,
emitting machine code, and linking with LLVM), ready to be distributed to
end users, (ii) compile to some custom bytecode, than make a runtime, on top
on LLVM, that would JIT-compile that bytecode and run it (in client's
computer - like Flash, Java, ...), and (iii) to provide the end user with
the option to optimize and recompile the program.

This is part of an answer I have received on llvm-bugs:
> It depends on, how exactly you're compiling LLVM. If you'll go with
> Cygwin-generated binaries, then yes - you'll need to depend on
> cygwin1.dll, which cannot be distributed freely, if you'll use mingw -
> you will use MS CRT, which is present on all win machines.

This tells me that I might have been misunderstood previously, so I am now
clarifying my question: I am asking about compiling to Qin32 WITH LLVM, not
compiling LLVM itself to Win32. So, what dependencies do programs generated
with LLVM need to run on client's Win32 machines? I hope that this time, my
question is more clear.

 - Tom
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