gdb warning

gdb warning

[Charles Wilkins]

I have seen posts about this is the web and in a couple newgroups, but I
have seen no clear solutions or definition as to what this message means.

When i run gdb, I get warning: unable to find dynamic linker
breakpoint function.
GDB will be unable to debug shared library initializers and track
explicitly loaded dynamic code.

I have installed the latest gdb and gcc.

Minimally, to duplicate this error, I compile with:
g++ -g test.cpp

Then to debug, I run:
gdb a.out

In the debugger when I try to run, is when I get the error.

Anybody care to point out what the cause of this is ?

Thanks in advance for a prompt reply.

Charles Wilkins

Re: gdb warning

[Kevin Buettner]

On May 27,  7:36pm, Charles Wilkins wrote:

> I have seen posts about this is the web and in a couple newgroups, but I
> have seen no clear solutions or definition as to what this message means.
> 
> When i run gdb, I get warning: unable to find dynamic linker
> breakpoint function.
> GDB will be unable to debug shared library initializers and track
> explicitly loaded dynamic code.
> 
> I have installed the latest gdb and gcc.
> 
> Minimally, to duplicate this error, I compile with:
> g++ -g test.cpp
> 
> Then to debug, I run:
> gdb a.out
> 
> In the debugger when I try to run, is when I get the error.
> 
> Anybody care to point out what the cause of this is ?

Which version of gdb?  (You say you have the latest, but do you
have the latest released version or are you using development
versions.)

Also, which host and target are you having problems on?

Kevin

Re: gdb warning

[Charles Wilkins]

> Which version of gdb?  (You say you have the latest, but do you
> have the latest released version or are you using development
> versions.)

version 5 which is termed as being the latest stable
http://sources.redhat.com/gdb/

> 
> Also, which host and target are you having problems on?

forgive my ignorance what do you mean by host and target?

Charles

Re: gdb warning

[Michael Snyder]

Charles Wilkins wrote:
> 
> I have seen posts about this is the web and in a couple newgroups, but I
> have seen no clear solutions or definition as to what this message means.
> 
> When i run gdb, I get warning: unable to find dynamic linker
> breakpoint function.
> GDB will be unable to debug shared library initializers and track
> explicitly loaded dynamic code.
> 
> I have installed the latest gdb and gcc.
> 
> Minimally, to duplicate this error, I compile with:
> g++ -g test.cpp
> 
> Then to debug, I run:
> gdb a.out
> 
> In the debugger when I try to run, is when I get the error.
> 
> Anybody care to point out what the cause of this is ?
> 
> Thanks in advance for a prompt reply.

In general, the cause is that GDB was not able to find and/or
load symbols from the dynamic linker.  I can't tell you more
specifically than that.  Perhaps the dynamic linker is not
in the usual location?  Perhaps it has been stripped?  Perhaps
its filename is not as expected?

gdb warning

[Charles Wilkins]

When i run gdb, I get warning: unable to find dynamic linker
breakpoint function.
GDB will be unable to debug shared library initializers and track
explicitly loaded dynamic code.

Any ideas why this comes up?

Re: gdb warning

[David Taylor]

    From: "Charles Wilkins" <chas@pcscs.com>
    Date: Tue, 29 May 2001 13:34:47 -0400

    > Also, which host and target are you having problems on?

    forgive my ignorance what do you mean by host and target?

    Charles

When you are configuring GDB, you have the ability to specify a host
and a target.  The host is the machine on which gdb will be run; the
target it the machine for which gdb will debug programs.

Since you asked what they are, I would guess that you specified
neither; in which case they default to the machine on which the
configure is being run (the build machine).  So, then assuming you are
trying to configure, build, and use GDB in a native environment, the
question becomes -- what system are you trying this on?

Put another way, in your build tree, what does the top level
config.status file give as the value of --host?

Re: gdb warning

[Charles Wilkins]

Here is my config.status:

#!/bin/sh
# This file was generated automatically by configure.  Do not edit.
# This directory was configured as follows:
./configure --host=i686-pc-linux-gnu --norecursion 
#  using "mt-frag"

the target and host are one and the same

----- Original Message ----- 
From: "David Taylor" <taylor@candd.org>
To: "Charles Wilkins" <chas@pcscs.com>
Cc: <gdb@sourceware.cygnus.com>; "Kevin Buettner" <kevinb@cygnus.com>
Sent: Tuesday, May 29, 2001 2:05 PM
Subject: Re: gdb warning


>     From: "Charles Wilkins" <chas@pcscs.com>
>     Date: Tue, 29 May 2001 13:34:47 -0400
> 
>     > Also, which host and target are you having problems on?
> 
>     forgive my ignorance what do you mean by host and target?
> 
>     Charles
> 
> When you are configuring GDB, you have the ability to specify a host
> and a target.  The host is the machine on which gdb will be run; the
> target it the machine for which gdb will debug programs.
> 
> Since you asked what they are, I would guess that you specified
> neither; in which case they default to the machine on which the
> configure is being run (the build machine).  So, then assuming you are
> trying to configure, build, and use GDB in a native environment, the
> question becomes -- what system are you trying this on?
> 
> Put another way, in your build tree, what does the top level
> config.status file give as the value of --host?
> 

Re: gdb warning

[Charles Wilkins]

Here is my config.status:

#!/bin/sh
# This file was generated automatically by configure.  Do not edit.
# This directory was configured as follows:
./configure --host=i686-pc-linux-gnu --norecursion 
#  using "mt-frag"

the target and host are one and the same