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

[Gordon Keiser]

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.  


Gordon Keiser
Software Development Engineer
Arxan Technologies
gkeiser at arxan.com  www.arxan.com 



> -----Original Message-----
> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu]
> On Behalf Of salvatore benedetto
> Sent: Saturday, July 28, 2012 11:05 AM
> To: llvmdev at cs.uiuc.edu
> Subject: [LLVMdev] Cross-compiling for cortex-m3: how do I get ride of -ccc-
> gcc-name ?
> 
> Hi there,
> 
> I'm using clang to cross compile for cortex-m3. I eventually managed to do so
> with
> 
> clang++ -ccc-gcc-name arm-none-linux-gnueabi-g++ -ccc-host-triple
> thumbv7m-none-gnueabi source.cpp -c -mcpu=cortex-m3
> 
> I would like to understand what -ccc-gcc-name does exactly and how can I get
> ride of it?
> 
> >From what I understand, it's needed by the driver in order to find the
> >binutils
> for calling the assembler and the linker. Is that correct?
> 
> After some grep'ing I ended up in gcc::Common::ConstructJob, where the
> option value is retrieved, but I'm not sure how does it fit with the rest.
> 
> How else can I tell llvm where to look for binutils?
> 
> Hope someone can save me a few hours around the codebase with some
> insights.
> 
> Regards,
> Salvatore
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