[LLVMdev] llvm-gcc mingw-w64 64-bit version

Duncan Sands baldrick at free.fr
Wed Oct 26 23:23:43 PDT 2011

Hi Raj, since llvm-gcc is deprecated and won't be part of the next release,
I suggest you concentrate on clang.

Ciao, Duncan.

> Has anyone built llvm-gcc-4.2-2.9 using mingw-w64 on Windows 7 64-bit OS?
> The binaries available in the download website LLVM-GCC 4.2 Front End Binaries
> for Mingw32/x86
> <http://llvm.org/releases/2.9/llvm-gcc4.2-2.9-x86-mingw32.tar.bz2> do not build
> applications (not surprisingly) for 64-bit Windows 7 (-m64 is disabled).
> I am both compiling and linking an application (to produce a 64-bit executable)
> that imports functions from a 64-bit library DLL that was produced by Visual
> Studio 2010 (these functions are exported from the library DLL).
> When I use clang-2.9 (I built clang-2.9 using CMake and mingw-w64) to compile
> the application (used flag -m64) and then link it with the 64-bit library DLL
> using mingw-w64-g++, it links fine, but, the generated executable when executed,
> silently quits the application just before making calls to imported functions.
> Everything before the first imported function is executed fine.
> On the other side, if I use mingw-w64-g++ to both compile and link the same
> application, I can execute the executable perfectly fine.
> It seems like clang-2.9 looses some information on dllimports.
> The reason I want to use clang or llvm-g++ is that I want to apply some of the
> LLVM transformations (and possibly develop new ones).
> Any idea how to tackle this problem?
> The llvm-gcc-4.2-2.9-source distribution does not contain CMake files that I can
> easily build using cmake on Windows.
> It comes with standard Makefiles which I can not build successfully using cygwin.
> Once again, let me know if anybody has built llvm-gcc-4.2-2.9 using mingw-w64 on
> Windows 7 64-bit OS.
> --Raj
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