[LLVMdev] Rebuilding LLVM libraries with LLVM-GCC on Windows

[Óscar Fuentes]

"Michael Ness" <mike at liquido2.com> writes:

[snip]

> I then used both of these builds to attempt to assemble and link my
> project with llvm-g++:
>
> $ llvm-g++ out.s -o out.exe `llvm-config --ldflags --libs x86 core
> system support`
>
> gave me the errors found in the attached file "errors_gcc.txt".  And
>
> $ llvm-g++ out.s -o out.exe `~/llvm-2.6-gcc/bin/llvm-config --ldflags
> --libs x86 core system support`
>
> gave me the errors found in the attached file "errors_llvm-gcc.txt".

You are working with an assembler file. Why?

You don't need to enumerate the base libraries. Something like

llvm-config --ldflags --libs x86

should suffice. In the next message, please show the output of that
command. Maybe the `--ldflags' is adding stuff to the command line that
causes the problem. Try removing it.


> I found it interesting that the attempt to link with the LLVM libs
> built with gcc caused several "multiple definition" errors, whereas
> the attempt to link with the libs built by llvm-gcc cause no multiple
> definitions but many more stdcall-fixup warnings.

Was the assembler file generated by the same g++ you are using for
linking it and, previously, for building LLVM?

> Both attempts failed to link, citing llvm::Type::Int32Ty as unresolved
> among other things.  Isn't llvm::Type in Core?

Yes.

> I appears I'm closer using the llvm-gcc build, but still unable to
> link everything correctly.  Any other ideas?

As the LLVM tools builds file, I think that the problem is in how you
handle the build of your project. Or you are hitting a problem with
MinGW's binutils.

Have you access to other toolset for building your project (VC++, g++ on
Linux, etc.)? Have you tried using LLVM libraries created with
configure&make, as Anton suggested?

-- 
Óscar