[cfe-dev] Using clang for cross-compiling to Cortex M4

[James Gregurich]

Do you intend to use C++ or just C?
I assume your target is Linux?



On Jun 2, 2014, at 10:00 PM, Rick Mann <rmann at latencyzero.com> wrote:

> I'm having a hard time figuring out how to build clang/llvm to let me target a small Cortext M4 MCU. I've got HEAD clang installed, but apparently no runtime or standard libraries. I've read through
> 
> 	http://clang.llvm.org/docs/CrossCompilation.html
> 
> and took a look at
> 
> 	http://llvm.org/docs/CMake.html
> 
> It talks about how to build LLVM to target an architecture, but I thought LLVM was able to target all its targets without having to be built specifically for each target. The clang/llvm I have install has all targets enabled, and I can pass it -target arm-none-eabi -mcpu=cortext-m4, and it seems to do the right thing.
> 
> What I'd like to do is make a homebrew formula to build an LLVM-based toolchain to target small ARM MCUs (I realize I'll have to use GNU binutils to link, that's fine). But I can't really figure out how to build it even manually.
> 
> 
> -- 
> Rick
> 
> 
> 
> 
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