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Re: [MiNT] GCC 4.4.0 for ColdFire

On Fri, 2009-06-05 at 01:49 +0200, Vincent Rivière wrote:
> Hello.
> 
> I have updated GCC 4.4.0 for full ColdFire support :-)
> The patches and Cygwin binaries are available at the usual place:
> http://vincent.riviere.free.fr/soft/m68k-atari-mint/
> 
> I have included all the ColdFire libraries, including MiNTLib, PML (too lazy 
> to switch to fdlibm), and GEMLib. It means that any TOS or GEM program 
> written in C or C++ can be compiled for ColdFire. The resulting executable 
> will run exclusively on ColdFire machines, at full speed, without any emulation.
> 
> In order to switch on ColdFire compilation, you just have to add the option 
> -mcpu=5475 to the gcc command line. That's all ! You could use any other V4e 
> CPU option, from 5470 to 5485, the result would be the same. The option 
> -mcfv4e still works, but it is deprecated.
> 
> In order to follow GCC standards, I renamed the V4e multilib directory to 
> m5475 (instead of mcfv4e in the previous version).
> 
> Beware to NOT link with the -g option, because it will use libc_g.a instead 
> of m5475/libc.a, so the executable will contain unoptimized 68000 code and 
> will fail on a pure ColdFire system (without emulation). The same issue with 
> -g occurs when compiling with -m68020-60. To be sure of what gets linked 
> into your executable, I recommend to link with the -Wl,-t option to see the 
> list of all the object files with their full path.
> 
> ColdFire binaries are mostly useless now, but they will be useful for the 
> developers of the new ACP project. However, you can try right now to compile 
> your own software for ColdFire in order to check the compatibility with the 
> ColdFire. Your programs will run at the highest speed on the upcoming ACP 
> computer !

Very useful for me Vincent. I'll start Gentoo on Coldfire soon.

I'd love to get your binutils & gcc patches upstream.

Can we start that process and let us know the bug submission ID's ??

Thanks Vincent for this excellent work!

Alan.