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From: kenner@lab.ultra.nyu.edu (Richard Kenner)
Newsgroups: comp.lang.ada
Subject: Re: Another SBIR, and Ada is still missing in action
Date: 8 Feb 1995 03:06:21 GMT
Organization: New York University Ultracomputer Research Lab
Message-ID: <3h9cfd$5ku@cmcl2.NYU.EDU>
References: <3h6565$2gr@network.ucsd.edu> <3h8k3r$2n1@gnat.cs.nyu.edu>
 <WOODRUFF.95Feb7163258@neux2.addvax.llnl.gov>
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Date: 1995-02-08T03:06:21+00:00
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In article <WOODRUFF.95Feb7163258@neux2.addvax.llnl.gov> woodruff1@llnl.gov writes:
>This poses a problem unless the linker can be pursuaded to invoke an Ada
>subprogram from within a Fortran subprogram.  
>
>I think that if GNAT's object-code management allows this kind of
>interlanguage operation, then Robert's suggestion is sound.

Yes, it certainly does.  GNAT itself is a C main program (part of GCC)
that calls the Ada-written front end.  When it comes time for it to
generate code, it calls C code (Gigi) to interface to GCC.  Gigi, in
turn, often makes calls to Ada functions in the front end to access
the tree.