GDB Can't Find My Shared Libraries

GDB Can't Find My Shared Libraries

[Don Mies]

I'm having a lot of trouble with gdb not finding my shared libraries.  
When I
invoke gdb with the executable it appears to load it but when I try to 
run the
program I get a message similar to the following:

   /devl/obj/main/LX86/xxx: error while loading shared
   libraries: libgorph.so: cannot open shared object file: No such file 
or directory

However, all of the libraries needed are in my LD_LIBRARY_PATH and I can
execute an "ldd" command on the same executable that I started gdb with 
and it
reports all of the libraries found and in their proper places.

I've done this on several different installation of Redhat Linux with 
the same
results on each platform.  For example, here is the configuration of one 
of the
systems:

% gdb --version
  GNU gdb Red Hat Linux (6.3.0.0-1.132.EL4rh)

% uname -a
  Linux anand 2.6.9-42.ELsmp #1 SMP Wed Jul 12 23:27:17 EDT 2006 i686 
i686 i386 GNU/Linux

% cat /etc/redhat-release
  Red Hat Enterprise Linux AS release 4 (Nahant Update 4)

I don't have a .gdbrc file but I do have a .dbxrc file (from when I debug on
Sun systems).

Can anyone tell me what is wrong here or how to give gdb the proper shared
library paths?

Thanks,


Don

Re: GDB Can't Find My Shared Libraries

[Daniel Jacobowitz]

On Wed, Mar 21, 2007 at 08:46:40AM -0700, Don Mies wrote:

> I'm having a lot of trouble with gdb not finding my shared libraries.  When I
> invoke gdb with the executable it appears to load it but when I try to run the
> program I get a message similar to the following:

>   /devl/obj/main/LX86/xxx: error while loading shared
>   libraries: libgorph.so: cannot open shared object file: No such file or 
> directory

> However, all of the libraries needed are in my LD_LIBRARY_PATH and I can
> execute an "ldd" command on the same executable that I started gdb with and it
> reports all of the libraries found and in their proper places.

99% of the time, this symptom means that your shell startup files are
clobbering LD_LIBRARY_PATH.  GDB runs the program by invoking a
subshell to handle command line processing.  I recommend checking that.

-- 
Daniel Jacobowitz
CodeSourcery

Re: GDB Can't Find My Shared Libraries

[Don Mies]

Daniel,

That was it.  Thank you very much! 

Daniel Jacobowitz wrote:
> On Wed, Mar 21, 2007 at 08:46:40AM -0700, Don Mies wrote:
>
>   
>> I'm having a lot of trouble with gdb not finding my shared libraries...
> 99% of the time, this symptom means that your shell startup files are
> clobbering LD_LIBRARY_PATH.  GDB runs the program by invoking a
> subshell to handle command line processing.  I recommend checking that.
>
>