Re: disruptors of & inventory of Ada compilers and latest their era of ISO8652 compliance

[Lucretia <laguest9000@googlemail.com>]

On Friday, 18 May 2018 12:33:24 UTC+1, Dan'l Miller  wrote:
> On Friday, May 18, 2018 at 5:47:06 AM UTC-5, Lucretia wrote:
> > On Friday, 18 May 2018 01:56:12 UTC+1, Dan'l Miller  wrote:
> > 
> > > Does anyone know (or have a URL to) why GIGI was written in C instead of in Ada?  Obviously, it is calling much C code in the GCC backend world, so there is 
> > 
> > Stallman's a C guy. His original intent with GNU was to replace Unix with a more free version by rewriting everything. They started with the toolchain, which was originally in C, now it's been rewritten in C++.
> 
> Ah, you bring up an interesting point:  perhaps GIGI in GNAT is borrowed from a GIGI over in the C/C++ compiler.  (You might also bring up an interesting point that GIGI in GNAT was written by Stallman or some other “C guy” instead of the NYU or AdaCore team, which also might have led to the borrowing of a preexisting GIGI layer.)

The *tree* packages in GNAT are autogenerated from a *def file, these map onto the C equivalent in the GCC backend so that GNAT can build the trees properly.