VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Tue Apr 09 2002 - 16:01:55 CDT

Dear Ionel,
  I'm posting this to VMD-L since you weren't subscribed yet when you
tried to post, and I think others will benefit from this information as
well.

The most recent versions of FLTK have migrated the Forms compatbility
routines out of the main libfltk.a or libfltk.so files, and into a separate
forms-compatibility library. In order to compile VMD with the bleeding
edge versions of FLTK, you'll have to link against this new "fltk_forms"
library that they just added in 1.1.0.b12. Here is the FLTK changelog info
that mentions this briefly:
  http://www.fltk.org/news.php?V58

We haven't updated VMD to compile against the new FLTK yet, but when we
do, we'll change the default configure script behavior to use the new
"fltk_forms" library as well. Until FLTK 1.1.0 gets released though, we'd
rather stick with VMD's build system assuming the use of stable release
versions of FLTK.

I looked on the FLTK web site for specific documentation on the location
and name of the "fltk_forms" library mentioned in the Changelog, but
have not found anything yet. Since they just made this change in b12,
I'm guessing that it isn't even in the documentation yet. Its also not
documented in the 2.0 development docs either, though the same changes
exists there as well. I'd just suggest looking for all ".a" files
produced in your tree and see what's there, and link against anything
resembling that "fltk_forms" library and see if that cures the link problem.

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

----- Forwarded message from owner-vmd-l_at_ks.uiuc.edu -----
From: "Ionel Vasilescu" <ionel_at_homemail.com>
Date: Tue, 09 Apr 2002 15:40:36 -0500
Subject: Linking problems to FLTK on Linux

Hi,

I'm trying to build VMD on an Intel RedHat 7.1 PC and I already built FLTK (1.1.0b12), but I try to build VMD, I get lots of "undefined reference to `fl_add_button(...)`" [and to many other FLTK methods]. Now, I already added the proper paths to the FLTK include and lib dirs in the Makefile, so I can't figure out what I'm doing wrong. Any idea or suggestion is welcome.

I'm using gcc 2.96-98.

Thanks,

Ionel 

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