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From: oliver@athena.mit.edu (James D. Oliver III)
Newsgroups: comp.lang.fortran
Subject: Assigning subroutine names in FORTRAN?
Message-ID: <14462@bloom-beacon.MIT.EDU>
Date: 20 Sep 89 18:23:21 GMT
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Reply-To: oliver@athena.mit.edu (James D. Oliver III)
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Organization: Massachusetts Institute of Technology
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I have a program construct of the following form:

	program main
	external a,b,c
	.
	.
	.
	call sub1(a,b,...) 
	.
	.
	.
	call sub2(a,b,c,...)
	.
	.
	.


where a,b,c are subroutines called within sub1 and sub2.  What I would like
to do is to be able to assign which subroutines a, b, and c are used in
sub1 and sub2 without having to recompile the program for each set I
choose.  (So that, for instance I could call sub1(a,c,...) or sub1(a,a,...)
or sub2(a,c,b...) or sub2(c,a,c...), etc.)  My sysadmin doesn't think
there's any way to do it because the subroutine name is not a variable but
specifies a memory location.  But neither he nor I are knolwedgable enough
to know for sure.  Could someone give a definitive answer or suggestions?
I would be running FORTRAN 77 on either a UNIX or a VAX/VMS system.
____________________________
	Jim Oliver
	oliver@athena.mit.edu
	oliver%mitwccf.BITNET@MITVMA.MIT.EDU