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Subj:	XV on ALPHA summary of problems and solutions

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From: merrill@stsci.edu (Clark)
Subject: XV on ALPHA summary of problems and solutions
Message-Id: <1993May7.165542.1@stsci.edu>
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Date: Fri, 7 May 1993 21:55:42 GMT
To: Info-VAX@kl.sri.com
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I am the person who did the conversion of XV to ALPHA VMS.  I am going on
vacation for a week and I would like to make what is hopefully my last post
on the subject.  I will include a list of the known problems and then
posible solutions.  All of these problems can be gotten rid of by upgrading
to DEC C version 1.3.  Most of my work on XV was done using DEC C 1.0 and DEC
C 1.3.

Problem #1  Compiler errors out and asks you to submit a SPR when trying
            to find an include file

Most of my work was done using DEC C 1.0.  This version included a logical
called DECC$LIBRARY_INCLUDE that pointed to all of the include files.
This logical went away with the released version of DEC C 1.2.  I ended up
defining sys to this logical.  so includes of the form
"#include <sys/xxxx.h>" are not working.  You can go in and change all of
the following occurances of "<sys/xxx>" in these modules:

VPRINTF.C;1  XVALG.C;1  [.JPEG]CKCONFIG.C;1  [..TIFF]TIF_VMS.C;1

There is one occurance in each module.  DEC C 1.3 will automatically find
the right include file with <sys/xxx> so there is no need for the logical
definition.

When I was using DEC C 1.2 this did not bite me because I still had my
DECC$LIBRARY_INCLUDE defined.  On my system it still worked fine.


Problem #2  Access Violation at startup of XV for the first time.

This problem also goes away in DEC C 1.3.

If this occurs do the following steps(I have posted this once before):

1.  Delete XV.OBJ;

2.  modify the following line in MAKE_XV.COM like following:

from

$       ALPHA_STUFF = "... /Optimize = (Level = 4) ..."
$       ALPHA_STUFF = "... /Optimize = (Level = 4) ..."

to

$       ALPHA_STUFF = "... /Optimize = (Level = 1) ..."

3.  @MAKE_XV.COM

Then run it!  The fish should spin pretty quick after that.

I know of no other problems with the XV port to AXP.

I will be back from vacation on May 17, 1993.  So you can write
me then with any comments.

I hope I did not cause anyone too much trouble with the problems!

Clark B. Merrill
Space Telescope Science Institute
Baltimore, Maryland
merrill@stsci.edu