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Re: 3.2 PATCH: Fully support parallel gnat1/gnatbind builds

On Fri, 31 May 2002, Richard Kenner wrote:
      Robert Dewar wrote:
>     > One interesting approach would be to have a mode in which GNAT generates
>     > ANSI C (or actually GNU C would be more reasonable). Then the C sources
>     > could be used to do a bootstrap. It would be otherwise valuable to have
>     > a C generating backend for Ada (to bring Ada to machines with a C but
>     > no Ada), so that would be an interesting project.
>     Sounds great.  I suggest adding this to projects/beginner.html
>     (on second thought maybe not ;-) or start a projects/ada.html?
> It is *far* from a beginner's project.

Maybe the smiley didn't carry through: it was a joke.  I think
several items in projects/beginner.html are a bit too
complicated, for example the "Revisit issues put off till
later", which generally requires archeology and intimate
knowledge about the issues.

> Indeed, the main reason it hasn't
> been done is that it is a very *hard* project.  If you really want to use
> ANSI C, you have to figure out how to deal with nested functions.  If you
> use GNU C, that isn't a problem, but you still have to deal with things
> like discriminated records and unconstrained arrays.

Great, more stuff to put in projects/ada.html.  Maybe an initial
limited implementation would suffice for help with Ada
bootstrap, if the GCC Ada front end doesn't use those features.

brgds, H-P

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