Experimental Physics and
Industrial Control System

Thu, 5 Oct 1995 16:30:58 -0500

> 
> Are you planning on bundling interviews with free_gdct and
> the epics extensions.  Considering how hard they are to build
> from Stanford, I think that would be a good idea. 

I wasn't planning on it, but what I should do per your suggestion is to
make InterViews available on the epics ftp server here at Argonne.

>  
> 
> I reread your 2nd message where you said 
> > The build of the TIFF directory is controlled by the TIFF.def file, which I
> > modified (this was probably the most difficult part.
> The only difference between the TIFF.def file I got from the 
> ~jbk/tmp/IV.Solaris.tar.gz
> and the one I got off of the net was yours had
> < /* #define TIFFCDriver $(CC) */
> < #define TIFFCDriver cc -Xs
> --- while the net version had 
> > #define TIFFCDriver $(CC)
> 
> Did you make other changes in TIFF.def?  If so, the one included in the tar file
> is not the final version of your changes.

That is the main change I made after many trys at different things.  Seems
quite trivial now, doesn't it.

> 
> I had only one significant problem making free_gdct.
> When I made Interviews and it installed the libraries it named them
> libIV.so.3.1 and libUnidraw.so.3.1.
> the directive 
> -L/usr/local/interviews/lib/SUN4 -lUnidraw  -lIV
> couldn't find them until I made symbolic links from files
> named respectively 
> libIV.so and libUnidraw.so.  This probably reflects the
> fact that I still didn't build interviews quite right.
> 

Everything you've done is fine, there is a note that I read
somewhere about the new Solaris dynamic loader which I completely forgot
about until you mentioned this trouble.  The note states that for the
dynamic loader to find the libraries, you must provide those links.

> 
> I do finally have a working copy of free_gdct.
> 
> I do have a question as a new user of gdct.  When you have
> exported a field from a record and can see it on the display then
> change your mind, can you get it off the display without deleting the
> record.  I couldn't seem to find a menu option to do that.

The exported field is stuck there until the record is deleted.  This
is one of the items that most users want improved (next to the
print capability).  Unfortunely the list of improvements that should 
be made to GDCT to quite large and has been around for a while.  GDCT
has a fairly low priority, not that it is not important, but the other
things on my list of projects are higher.  I believe the ability to
unexport field is number 2 (printing being number 1) on the list.

Sorry to ramble on about GDCT like this.  InterViews/Unidraw is an
interesting product and provides capabilies not found in other packages,
unfortunely it is not an active product, no more releases will be
available.  Most of the developers went on to develop Fresco, the X11
official object oriented interface.  Fresco is missing the Unidraw
library capabilities, making it not very useful.  I am hoping to do
a little research and find a modern replacment for the InterViews/Unidraw
package and upgrade GDCT.

Jim

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System