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Re: Using GCC for embedded projects

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In message <Dnl*2Po1t@news.chiark.greenend.org.uk>
          Theo Markettos <theom+news@chiark.greenend.org.uk> wrote:

> Dave Higton <davehigton@dsl.pipex.com> wrote:
> > Is it possible to use RISC OS GCC to generate binaries to run on ARM
> > embedded processors?
> 
> I can't say for sure, but I've used RISC OS GCC (as a cross compiler on
> Linux) to compile the Linux kernel for ARM.  So the chances are probably
> good.
> 
> > 1) Can GCC generate Thumb code?  (Presumably with a switch like
> > -march=cortex-m0 or something like that?)
> 
> You probably want -mthumb:
> http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html
> 
> > 2) Can GCC avoid relying on the shared C library?  For example, what code
> > will be generated if arithmetic is done at run-time?
> 
> There's an option -nostdinc which doesn't pull in the standard headers. 
> Not sure the position on linking, but there may be a similar option.
> 
> > 3) How do I specify locations for the various segments?
> 
> Pass.  Find out what the usual options are and see if they work on RISC
> OS.  They may well do.  John Tytgat on the GCCSDK list will know for sure.

OK, thanks, Theo.

Dave

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Using GCC for embedded projects Dave Higton <davehigton@dsl.pipex.com> - 2012-03-04 17:34 +0000
  Re: Using GCC for embedded projects Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-03-04 17:43 +0000
    Re: Using GCC for embedded projects Dave Higton <davehigton@dsl.pipex.com> - 2012-03-04 21:54 +0000

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