Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!apple!netcom!eager
From: eager@netcom.UUCP (Michael Eager)
Newsgroups: comp.lang.c
Subject: Re: C on IBM MVS or VM/CMS
Keywords: C IBM mainframe request
Message-ID: <4767@netcom.UUCP>
Date: 1 Dec 89 07:51:25 GMT
References: <249@dlogics.UUCP>
Organization: NetCom- The Bay Area's Public Access Unix System {408 997-9175 guest}
Lines: 23

kam@dlogics.UUCP (Kevin Mitchell) writes:
>We're considering porting some software to IBM machines running
>MVS or VM/CMS. If you know any good information about C compilers
>on these machines, please comment.



I ported a version of Spice consisting of several hundred modules 
and about 110,000 lines of C from Sun to MVS using the compiler
which IBM provides (I can't seem to remember who really makes the 
compiler).  There were a number of problems:  the MVS compiler is
ANSI-ish, the Sun is K&R; I needed to translate all [ to ??( and 
] to ??) (who would have thought that trigraphs were actually 
useful?); and I had to eliminate multiple definitions of global
variables (Sun just merges the definitions).

There is a second compiler available for MVS & VM, I believe by 
Lattice.  I have not used it, but the documentation appears to be
significantly better than the IBM compiler and there appear to be
more of the common library routines.

-- Mike Eager
Eager Consulting, 481 Century Drive, Campbell, CA 95008 (408) 378-8820