Unable to resolve the symbols in shared library

[sunil]

Hi ,

Am facing one problem while deploying the shared library in different
boxes.
I devoloped one shared library for TAM suite ( This is a IBM product
for different authentication mechanisms) to customise that product for
a different scenario.
We deployed the TAM in different boxex and the same library file is
deployed in all the machines.
It is working in three boxes perfectly fine but in one box it is not
working.
When we diagnose the shared librarty to zero out the problem , we came
to know one symbol is missing in that library.

---------------------------------------------
symbol not found: main (./libxauthn.so)
/platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
symbol not found:
checkPropagateC ustomCdasErrors (./libxauthn.so)
/usr/lib/cpu/sparcv8plus/libCstd_isa.so. 1
------------------------------------
But anywhere in my code I am not using this symbol. We are not aware
from where the loader is picking this symbol.
This problem is existing in only one server and the rest three are
executing perfectly fine.
Please let me know how to progress further.

Regards
Sunil.

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

On Jun 16, 1:20*pm, sunil <sunil....@gmai l.comwrote:

---------------------------------------------
* symbol not found: main * * * * *(./libxauthn.so)
* * * * /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
* * * * symbol not found:
checkPropagateC ustomCdasErrors * * * * * * * *(./libxauthn..so)
* * * * /usr/lib/cpu/sparcv8plus/libCstd_isa.so. 1
------------------------------------

Maybe a 3rd party library is calling that function? Or maybe it's
called by the application's "start up" code?

[sunil]

On Jun 16, 5:28*pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

On Jun 16, 1:20*pm, sunil <sunil....@gmai l.comwrote:

---------------------------------------------
* symbol not found: main * * * * *(./libxauthn.so)
* * * * /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
* * * * symbol not found:
checkPropagateC ustomCdasErrors * * * * * * * *(./libxauthn.so)
* * * * /usr/lib/cpu/sparcv8plus/libCstd_isa.so. 1
------------------------------------

Maybe a 3rd party library is calling that function? Or maybe it's
called by the application's "start up" code?

How to diagnose the problem whether third party function is calling or
not?
Am unaware where and how to dig into the problem.

Regards
Sunil

[Eric Sosman]

sunil wrote:

Hi ,

Am facing one problem while deploying the shared library in different
boxes.
I devoloped one shared library for TAM suite ( This is a IBM product
for different authentication mechanisms) to customise that product for
a different scenario.
We deployed the TAM in different boxex and the same library file is
deployed in all the machines.
It is working in three boxes perfectly fine but in one box it is not
working.
When we diagnose the shared librarty to zero out the problem , we came
to know one symbol is missing in that library.

---------------------------------------------
symbol not found: main (./libxauthn.so)
/platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
symbol not found:
checkPropagateC ustomCdasErrors (./libxauthn.so)
/usr/lib/cpu/sparcv8plus/libCstd_isa.so. 1
------------------------------------
But anywhere in my code I am not using this symbol. We are not aware
from where the loader is picking this symbol.
This problem is existing in only one server and the rest three are
executing perfectly fine.
Please let me know how to progress further.

By "this symbol" do you mean `checkPropagate CustomCdasError s'
or do you mean `main'?

(In other words, I suspect the linking step has been messed
up somehow. The details of this step -- command options, search
paths, and so on -- are highly dependent on the tool set in use
and are not really C language issues. If investigating the "Why
is there no main() function in this program?" question doesn't
lead to the solution, try your question on an IBM or Sun forum.)

--
Eric Sosman
es*****@ieee-dot-org.invalid

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

On Jun 16, 1:38*pm, sunil <sunil....@gmai l.comwrote:

On Jun 16, 5:28*pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

On Jun 16, 1:20*pm, sunil <sunil....@gmai l.comwrote:

---------------------------------------------
* symbol not found: main * * * * *(./libxauthn.so)
* * * * /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
* * * * symbol not found:
checkPropagateC ustomCdasErrors * * * * * * * *(./libxauthn.so)
* * * * /usr/lib/cpu/sparcv8plus/libCstd_isa.so. 1
------------------------------------

Maybe a 3rd party library is calling that function? Or maybe it's
called by the application's "start up" code?

How to diagnose the problem whether third party function is calling or
not?
Am unaware where and how to dig into the problem.

I should have paid more attention to the error. Given that you're
getting a "symbol not found" error for "main", it definitely looks
like the problem is with the "start up" code, i.e. the secret code
that gets executed before main.

I'd say the problem is either:
1) The compiler is corrupt and needs to be reinstalled
2) The project options are screwed up

Try creating a brand new project and copying all the header and source
files to it, then re-compile.

If that doesn't work, re-install the compiler.

[sunil]

On Jun 16, 5:43*pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

On Jun 16, 1:38*pm, sunil <sunil....@gmai l.comwrote:

On Jun 16, 5:28*pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

On Jun 16, 1:20*pm, sunil <sunil....@gmai l.comwrote:

---------------------------------------------
* symbol not found: main * * * * *(./libxauthn.so)
* * * * /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
* * * * symbol not found:
checkPropagateC ustomCdasErrors * * * * * * * *(./libxauthn.so)
* * * * /usr/lib/cpu/sparcv8plus/libCstd_isa.so. 1
------------------------------------

Maybe a 3rd party library is calling that function? Or maybe it's
called by the application's "start up" code?

How to diagnose the problem whether third party function is calling or
not?
Am unaware where and how to dig into the problem.

I should have paid more attention to the error. Given that you're
getting a "symbol not found" error for "main", it definitely looks
like the problem is with the "start up" code, i.e. the secret code
that gets executed before main.

I'd say the problem is either:
* * 1) The compiler is corrupt and needs to be reinstalled
* * 2) The project options are screwed up

Try creating a brand new project and copying all the header and source
files to it, then re-compile.

If that doesn't work, re-install the compiler.- Hide quoted text -

- Show quoted text -

Tomas/Eric

Forgot to write onething in the last mail.The error pasted in the last
mail is the output of the command "ldd -r <shared library name>",here
the command is executed against my shared library.
We are checking ldd against the library thats the reason it is
throwing the "main" error.It is not our primary concern.
Main concern is the symbol "checkPropagate CustomCdasError s".From where
this symbol is picked up?
In my code I am not using this kind of function
(checkPropagate CustomCdasError s) or variable.Why it is coming only in
one server if the rest of three is working fine.

Regards
Sunil.

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

On Jun 16, 2:00*pm, sunil <sunil....@gmai l.comwrote:

In my code I am not using this kind of function
(checkPropagate CustomCdasError s) or variable.Why it is coming only in
one server if the rest of three is working fine.

Two possibilites that come to mind:

1) The other two servers don't call this function, but this
problematic server does and it can't find it. This would be caused by
the problematic server using a different version of a 3rd party
library, for instance.

2) All three servers call this function, but it's simply missing on
the problematic server. This would be caused by a corrupt installation
of the compiler or of 3rd party libraries.

[Tor Rustad]

sunil skrev:

>
Forgot to write onething in the last mail.The error pasted in the last
mail is the output of the command "ldd -r <shared library name>",here
the command is executed against my shared library.
We are checking ldd against the library thats the reason it is
throwing the "main" error.It is not our primary concern.
Main concern is the symbol "checkPropagate CustomCdasError s".From where
this symbol is picked up?
In my code I am not using this kind of function
(checkPropagate CustomCdasError s) or variable.Why it is coming only in
one server if the rest of three is working fine.

gcc -Wl,-cref

should instruct the linker to provide a cross reference. Lot's of output..

--
Tor <bw****@wvtqvm. vw | tr i-za-h a-z>

[CBFalconer]

sunil wrote:

Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

.... snip ...

>

>Try creating a brand new project and copying all the header and
source files to it, then re-compile.

If that doesn't work, re-install the compiler.- Hide quoted text -

In my code I am not using this kind of function
(checkPropagate CustomCdasError s) or variable. Why it is coming
only in one server if the rest of three is working fine.

Be advised that Tomas is plonked for bigotry by various users here,
and thus his errors will not be corrected, or even seen, by many
users. Tomas has also been known, earlier, to have some wierd
ideas about the C language.

--
[mail]: Chuck F (cbfalconer at maineline dot net)
[page]: <http://cbfalconer.home .att.net>
Try the download section.
** Posted from http://www.teranews.com **

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

On Jun 16, 11:06*pm, CBFalconer <cbfalco...@yah oo.comwrote:

Be advised that Tomas is plonked for bigotry by various users here,
and thus his errors will not be corrected, or even seen, by many
users. *Tomas has also been known, earlier, to have some wierd
ideas about the C language.

It's a shame you can't see past your own personal prejudices to
embrace or at least tolerate my beliefs that are different to yours.
Hopefully one day all humanity can co-exist peacefully.

As for the allegations of "weird ideas", well I'll be more than happy
to answer specific instances that are backed up with examples. Anyone
can make wild allegations, see:
CBFalconer was arrested for drug dealing back in 1995.