🚀 go-pugleaf

   Date: Tue, 28 Jan 1992 21:22:25 GMT
   From: amorgan@CS.Stanford.EDU (Crunchy Frog)

Especially good with Spring Surprise--^^^

		Right now it is rather difficult to combine, say fortran code

   with C, or indeed any language with any other.  This means, for all
   practical purposes, that code must be written in one language only
   (ignoring cases like emacs).  Has any thought been given to the
   possibility of making the GNU language products (when they all come
   out) able to speak to one another?  The idea being that I could
   write some code in C, some in Fortran, some in LISP, compile link
   and go.  I realize this would be difficult but is it so hard that
   it is not even worth thinking about?

C++ can already call C, vial the linkage modification operator.
C and Objective-C can intercall.
Next has made C++ intercall with Objective-C; don't know if this will
be in in time (haven't checked; could be in already).

Fortran will partially work with C, by coincidence.  Eventually that
will likely be changed (and I presume 'extern "FORTRAN" implemented
for C++).

C has been extended to imclude static initialisers which are
initialised in the same way that C++ is.  This also means I guess that
libraries could conceivably be implemented in C++ and exported to
other languages.

Lisp is currently very hard.  There isn't a GNU Lisp anyway (except
elisp) so this isn't a big deal yet.

I haven't seen GNU BASIC yet.