Re: Debugging 3.21 code under a 2.95.2 build

[Cal Erickson]

Gary,
You could use LD_LIBRARY_PATH=<path to stdc+ lib> in your environment.
Then gdb will find the proper library. DDD has nothing to do with
finding the correct library. You could also try set solib-path in the 
gdb window.

Cal Erickson


Gary Knight wrote:

> Hello;
>  In perusing the DDD manual, last edited it seems in 2001, I found 
> nothing helpful for users who can't get an executable compiled 
> 'recently' to run under DDD (or gdb) that was built as long ago as, say 
> 2001. We have a Unix network (Sun Sparks 2.9 or so) where DDD has been a 
> workhorse for 'vanilla' C code and C++ executables that were link-loaded 
> under gcc version 2.95.2. However, newer codes compiled under gcc 3.21, 
> with a different stdc++ library, do not run in DDD (or gdb). They open 
> fine, with no warning, but at the run command, the inferior debugger 
> dies because it can't find the new stdc++ library.
>
>  It would be helpful to indicate what to do, short of a recompile of 
> gdb, to 'fool' DDD to locate the newer library. It is not smart enough 
> to notice an environment string (in bash) specifying the path, although 
> that path was recognized by the gcc compiler-loader! One solution would 
> be to add a command string intended for dbg in the init file, fingering 
> the library or path. Anothrt brutish solution is to copy the 3.21 
> library into the same old folder where the 2.95.2 libraries exist (or 
> whatever version was used to compile gdb in the first place). Or have I 
> missed something that should have been obvious?
>
>  Future versions of DDD ought to notify the user at file-open time that 
> an executable will want libraries that seem unknown or unavailable to 
> the debugger, and even offer suggestions (or dialogue) to  specify the 
> library paths, for saving as options to the init file. A concept index 
> entry for "dynamic library" or "library references" would be good.
>
>  Cheers, Gary


--
===========================================================================
Cal Erickson                 MontaVista Software Inc.
Linux Consultant             1237 E. Arques Ave.
Phone (408) 328-0304         Sunnyvale CA 94085
Fax   (408) 328-9204         web http://www.mvista.com
===========================================================================