Re: [avr-gcc-list] C++

[E. Weddington]

Ron Kreymborg wrote:

> I have been experimenting with WinAvr's C++ implementation and I am
> pleasantly surprised. There is not a great deal you cannot do. With some
> of the bigger AVRs the old bogey of "C++ bloat" has become less of an
> issue, and in fact the bigger our programs get the more the advantages
> of C++ take over from C.
>
> However, I remember converting a 30K C program to C++ on the MC68332 MRM
> using a full blown gcc, thoughtfully replacing my queue code with a
> queue<> and seeing the code size jump 100K!
>
> So I would like to propose implementing a subset of libstdc++ that would
> be suitable for a micro like the AVR. One feature that comes to mind and
> currently missing are pure virtual functions. I do not know enough about
> managing a gnu project to start this myself, but I would sure like to
> play a part. Those interested could perhaps get together and come up
> with an agreed upon subset. Maybe this list could be the place for
> initial suggestions, and subsequently the implementers could report from
> time to time.
>
> Any interest?
>
>
>  

Lots!

Especially if you have the C++ expertise to implement such a thing.

This has been discussed before, especially on the avr-libc-dev list 
(where perhaps this thread should be moved). Some things that have been 
discussed before:

1. The subset of libstdc++ that would be implemented is probable along 
the lines of libsupc++. See:
<http://gcc.gnu.org/onlinedocs/libstdc++/faq/index.html#2_5>

2. Licensing issues. avr-libc is licensed under Modified BSD, mainly 
because of usage in embedded products. The proposed C++ lib should be 
compatible.

3. Another possibility is using STLport:
<http://www.stlport.org/>
But AFAIK it hasn't been built for the AVR target yet.

Eric