[cfe-dev] Compiling with Clang for target Windows Phone ARM

[Reid Kleckner]

When 3.1 was released, LLVM only built host targets on Windows by
default.  That's probably why those are the only ones in the release
binary.

The default has since been changed, so you compile a more recent
version of clang it should get all the backends for free.  Otherwise
you can recompile 3.1 with the cmake option -DLLVM_ENABLE_TARGETS=all
or something (wild guess).

On Thu, May 2, 2013 at 12:25 AM, dev dev <dev7359 at gmail.com> wrote:
> Hi,
>
> I would like to compile a C program with Clang for Windows Phone ARM target.
>
> The host machine is amd64 running Windows 8.
> I'm using the out of the box Clang 3.1 release binary for Windows and MinGW.
>
> I run:
>> clang -v -target arm -I. -c c:\TEST\a.c -o c:\TEST\a.o
>
> I get the following:
>
> clang version 3.1 (branches/release_31)
> Target: arm
> Thread model: posix
> clang: warning: unknown platform, assuming -mfloat-abi=soft
> ...
> error: unable to create target: 'No available targets are compatible with
> this triple, see -version for the available targets.'
>
>
> When I run llc --verions
>
> LLVM (http://llvm.org/):
>   LLVM version 3.1svn
>   DEBUG build with assertions.
>   Built Jan 27 2013 (15:12:16).
>   Default target: i686-pc-win32
>   Host CPU: i686
>
>   Registered Targets:
>     c      - C backend
>     x86    - 32-bit X86: Pentium-Pro and above
>     x86-64 - 64-bit X86: EM64T and AMD64
>
>
> So no ARM LLVM backend.
>
> Is there any particular reason for not supporting ARM on Windows host?
>
> If no, do I have to recompile both LLVM and Clang or only Clang?
>
> Thanks,
> David
>
>
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