llvm dev - Jul 2012 - [LLVMdev] Cross-compiling for cortex-m3: how do I get ride of -ccc-gcc-name ?

On Mon, Jul 30, 2012 at 3:51 AM, Gordon Keiser <gkeiser at arxan.com>
wrote:
> Making a symlink to clang in the same directory as the GCC / binutils
(I'll call it $ARM_BIN) called
>
> arm-none-linux-gnueabi-clang (and one with clang++ too)
>
> and another link in the $ARM_BIN/../lib directory to clang directory
located under clang's lib (for includes)
> should be enough.
I'm sorry, I should have been more clear. I don't just want to get
right of the option itself, I want not to
have the need to a have a GCC cross-toolchain around.

I did download and cross compile binutils myself. I'd like llvm to use
that by default.

Is that possible?

Thanks,
Salvatore

On 30 July 2012 09:14, salvatore benedetto
<salvatore.benedetto at gmail.com> wrote:
> I'm sorry, I should have been more clear. I don't just want to get
> right of the option itself, I want not to
> have the need to a have a GCC cross-toolchain around.
That requires a bit more than just compiling binutils. You'll need a
working linker and a perfect interaction between run-time libraries
and compiler generated code (read exception handling, RTTI, etc),
which LLVM hasn't.

The compiler-rt project is aiming to fix the latter, but not too close
to achieving it yet, I'm afraid. I'm not sure there is a project (or
the desire) to implement a full linker for multiple platforms.

-- 
cheers,
--renato

http://systemcall.org/

On Mon, Jul 30, 2012 at 10:27 AM, Renato Golin <rengolin at
systemcall.org> wrote:
> On 30 July 2012 09:14, salvatore benedetto
> <salvatore.benedetto at gmail.com> wrote:
>> I'm sorry, I should have been more clear. I don't just want to
get
>> right of the option itself, I want not to
>> have the need to a have a GCC cross-toolchain around.
>
> That requires a bit more than just compiling binutils. You'll need a
> working linker and a perfect interaction between run-time libraries
> and compiler generated code (read exception handling, RTTI, etc),
> which LLVM hasn't.
I'm not sure what you mean by a working linker, as that comes with
the binutils.

As for the run-time libraries, I know that you mean, I just
forgot to also add that for my current project I don't need any of them. :-)
I don't plan to link either libc or libcxx. So I expect that to be
achievable.

Thanks,
S.