Need advice/help on upgrading to 3.51

[Bill Carpenter]

In article <1369 at sialis.mn.org> rjg at sialis.mn.org (Robert J. Granvin) writes:
> >Compatibility Caveats: I'm running a DOS-73, EIA/RAM (w/1.5Mb),
> >  VDI_Libs, and a few other neato things.  Is the object code (and
> >  associated libraries) portable from 3.0 -> 3.51?
> 
> To the best of my knowledge.  Does anyone claim differently?

You shouldn't have any trouble with object code compatibility
(including using shared libraries), but between 3.0 and 3.5 they
changed from the "old" archive library format to the "new" format.
What that meant was that if you had libsomething.a from 3.0 or before,
you had to unpack it into individual files (using the old "ar") and
then re-archive it into the new format (using the 3.5 ar).

For 3.5, they shipped utilities (I think called "3.0ar" and "3.0nm")
for just this purpose, but I think they didn't do that for 3.51. (So
if you're going from 3.0->3.51, save your own copies of "ar" and
"nm".)  Of course all the libraries they ship you are already
converted, except there was some slip up for "libcvdi.a" (the graphics
library), so you have to convert that yourself if you want to use it.
(It only takes a couple minutes.)

[Note ... I am not connected with UNIXpc development or maintenance.]
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   Bill Carpenter         att!ho5cad!wjc  or  attmail!bill