From bug-octave-request at bevo dot che dot wisc dot edu  Wed Dec  9 14:00:03 1998
Subject: Unidentified subject!
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Gary Holt <holt at lnc dot usc dot edu>
Cc: bug-octave at bevo dot che dot wisc dot edu
Date: Wed, 9 Dec 1998 14:00:00 -0600 (CST)

On  9-Dec-1998, Gary Holt <holt at lnc dot usc dot edu> wrote:

| To: bug-octave at bevo dot che dot wisc dot edu
| Subject: .oct files for 2.1.11 on linux---rdynamic needed?
| 
| Bug report for Octave 2.1.11 configured for %CANONICAL_HOST_TYPE%
| 
| Description:
| -----------
| 
| Although I do have a shared version of libstdc++ (as the "installation
| problems" section of the info file suggests), when I build the oregonator.cc
| example from the octave distribution, octave can't load it (see transcript
| below).
| 
| I had to modify src/Makefile to add -rdynamic to the link options, and then
| it worked fine.

>From looking at the gcc specs file, it looks like -rdynamic adds
-export-dynamic to the ld command.  The ld man page says

  -export-dynamic
    When creating an ELF file, add all symbols to the dynamic symbol
    table.  Normally, the dynamic symbol table contains only symbols
    which are used by a dynamic  object.  This option is needed for
    some uses of dlopen.

I'll add a check to configure to add this option if it is accepted by
gcc.

Thanks,

jwe