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Re: loading shared libraries under RH 6.0

From: Timothy H. Keitt
Subject: Re: loading shared libraries under RH 6.0
Date: Wed, 12 May 1999 09:33:47 -0700

I figured out part of the problem.  I needed to explicitly instantiate my 
templates because of
the -fno-implicit-templates flag that is included by the configure script.  RH 
6.0 does break
binary compatibility with 5.x, but I rebuilt the rpm for 6.0, so that should 
not be a
problem.  I got most of my routines working by declaring templates or letting 
gcc do it by
droping the -fno-implicit-templates flag.  One routine however is causing seg 
faults way down
in the STL for no apparent reason.  I'm going to try and recompile octave 
without optimization
and see if that helps.  (Hopefully, this isn't because of a broken STL!)


"John W. Eaton" wrote:

> On 10-May-1999, Timothy H. Keitt <address@hidden> wrote:
> | After upgrading to redhat 6.0, I am having problems mixing STL code with
> | octave library code in my .oct files.  They compile fine and even
> | execute until I allocate an STL data structure.  Here's the error:
> |
> |
> | octave: error in loading shared libraries:
> | /home/keitt/src/octave/local/expwdist.oct: undefined symbol:
> | 
> insert_unique__t7rb_tree5ZdZdZt8identity1ZdZt4less1ZdZt24__default_alloc_template2b1i0RCd
> |
> | Actually, I think I had this problem before, but got around it
> | by not using mkoctfile and simply doing
> |
> |     gcc -shared -o file.oct -lstdc++
> |
> | If I do that now, I get a core dump when I try to load the
> | shared library code into octave.
> |
> | Any thoughts?  Thanks in advance.
> Does RedHat 6.0 have different versions of the C and C++ libraries
> than you previously had (my guess is yes).  If so, did you recompile
> Octave to use the new C++ libraries?   As usual when Octave crashes on
> Linux systems and some upgrade is involved, I suspect compatibility
> problems with the libraries.
> jwe

Timothy H. Keitt
National Center for Ecological Analysis and Synthesis
735 State Street, Suite 300, Santa Barbara, CA 93101
Phone: 805-892-2519, FAX: 805-892-2510

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