Re: STM32F4 GNAT Run Time System - roadmap

[Simon Wright <simon@pushface.org>]

Jere <jere.groups@gmail.com> writes:

> I am currently looking at an M0+ chip, which as far as I can tell, has
> no GNAT cross compiler's available (nor runtimes).  It does have a GCC
> port for 4.9.3 I think, but not GNAT.  Speaking from the perspective
> of developing on a Windows machine.
>
> At some point I guess I will have to dig in and figure out how to
> build GNAT for the m0+ using windows, then I'll have to figure out the
> runtime, but I am light years from understanding that stuff at the
> moment.

I think it'd be simple enough to make an M0+ compiler (once one's found
the proper incantation); the problem I had was getting one compiler to
generate M3 or M4F code as required. I think the ARM branch at
https://launchpad.net/gcc-arm-embedded can do it, but the changes
haven't been rolled in to the GCC trunk; and there are apparently
problems building Ada with that source tree; and they are up to 4.9.3
only.

Of course the work I've done has been on Mac OS X; perhaps look at
TDM-GCC, starting at http://getadanow.com/#get_windows

If your chip has FreeRTOS you might be able to work from my
http://sourceforge.net/projects/cortex-gnat-rts/ - there are 12 or so
board-specific sources, though I think that at least two of the files
could be moved to common.